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-rw-r--r--fs/nfs/callback.c83
-rw-r--r--fs/nfs/callback.h59
-rw-r--r--fs/nfs/callback_proc.c326
-rw-r--r--fs/nfs/callback_xdr.c143
-rw-r--r--fs/nfs/client.c302
-rw-r--r--fs/nfs/delegation.c362
-rw-r--r--fs/nfs/delegation.h1
-rw-r--r--fs/nfs/dir.c82
-rw-r--r--fs/nfs/getroot.c6
-rw-r--r--fs/nfs/idmap.c2
-rw-r--r--fs/nfs/inode.c3
-rw-r--r--fs/nfs/internal.h19
-rw-r--r--fs/nfs/mount_clnt.c83
-rw-r--r--fs/nfs/nfs2xdr.c1294
-rw-r--r--fs/nfs/nfs3xdr.c2817
-rw-r--r--fs/nfs/nfs4_fs.h13
-rw-r--r--fs/nfs/nfs4filelayout.c6
-rw-r--r--fs/nfs/nfs4proc.c188
-rw-r--r--fs/nfs/nfs4renewd.c11
-rw-r--r--fs/nfs/nfs4state.c293
-rw-r--r--fs/nfs/nfs4xdr.c1426
-rw-r--r--fs/nfs/pagelist.c7
-rw-r--r--fs/nfs/pnfs.c524
-rw-r--r--fs/nfs/pnfs.h76
-rw-r--r--fs/nfs/proc.c5
-rw-r--r--fs/nfs/super.c19
-rw-r--r--fs/nfs/unlink.c2
27 files changed, 5403 insertions, 2749 deletions
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index 93a8b3bd69e..199016528fc 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -16,9 +16,7 @@
#include <linux/freezer.h>
#include <linux/kthread.h>
#include <linux/sunrpc/svcauth_gss.h>
-#if defined(CONFIG_NFS_V4_1)
#include <linux/sunrpc/bc_xprt.h>
-#endif
#include <net/inet_sock.h>
@@ -137,6 +135,33 @@ out_err:
#if defined(CONFIG_NFS_V4_1)
/*
+ * * CB_SEQUENCE operations will fail until the callback sessionid is set.
+ * */
+int nfs4_set_callback_sessionid(struct nfs_client *clp)
+{
+ struct svc_serv *serv = clp->cl_rpcclient->cl_xprt->bc_serv;
+ struct nfs4_sessionid *bc_sid;
+
+ if (!serv->sv_bc_xprt)
+ return -EINVAL;
+
+ /* on success freed in xprt_free */
+ bc_sid = kmalloc(sizeof(struct nfs4_sessionid), GFP_KERNEL);
+ if (!bc_sid)
+ return -ENOMEM;
+ memcpy(bc_sid->data, &clp->cl_session->sess_id.data,
+ NFS4_MAX_SESSIONID_LEN);
+ spin_lock_bh(&serv->sv_cb_lock);
+ serv->sv_bc_xprt->xpt_bc_sid = bc_sid;
+ spin_unlock_bh(&serv->sv_cb_lock);
+ dprintk("%s set xpt_bc_sid=%u:%u:%u:%u for sv_bc_xprt %p\n", __func__,
+ ((u32 *)bc_sid->data)[0], ((u32 *)bc_sid->data)[1],
+ ((u32 *)bc_sid->data)[2], ((u32 *)bc_sid->data)[3],
+ serv->sv_bc_xprt);
+ return 0;
+}
+
+/*
* The callback service for NFSv4.1 callbacks
*/
static int
@@ -177,30 +202,38 @@ nfs41_callback_svc(void *vrqstp)
struct svc_rqst *
nfs41_callback_up(struct svc_serv *serv, struct rpc_xprt *xprt)
{
- struct svc_xprt *bc_xprt;
- struct svc_rqst *rqstp = ERR_PTR(-ENOMEM);
+ struct svc_rqst *rqstp;
+ int ret;
- dprintk("--> %s\n", __func__);
- /* Create a svc_sock for the service */
- bc_xprt = svc_sock_create(serv, xprt->prot);
- if (!bc_xprt)
+ /*
+ * Create an svc_sock for the back channel service that shares the
+ * fore channel connection.
+ * Returns the input port (0) and sets the svc_serv bc_xprt on success
+ */
+ ret = svc_create_xprt(serv, "tcp-bc", &init_net, PF_INET, 0,
+ SVC_SOCK_ANONYMOUS);
+ if (ret < 0) {
+ rqstp = ERR_PTR(ret);
goto out;
+ }
/*
* Save the svc_serv in the transport so that it can
* be referenced when the session backchannel is initialized
*/
- serv->bc_xprt = bc_xprt;
xprt->bc_serv = serv;
INIT_LIST_HEAD(&serv->sv_cb_list);
spin_lock_init(&serv->sv_cb_lock);
init_waitqueue_head(&serv->sv_cb_waitq);
rqstp = svc_prepare_thread(serv, &serv->sv_pools[0]);
- if (IS_ERR(rqstp))
- svc_sock_destroy(bc_xprt);
+ if (IS_ERR(rqstp)) {
+ svc_xprt_put(serv->sv_bc_xprt);
+ serv->sv_bc_xprt = NULL;
+ }
out:
- dprintk("--> %s return %p\n", __func__, rqstp);
+ dprintk("--> %s return %ld\n", __func__,
+ IS_ERR(rqstp) ? PTR_ERR(rqstp) : 0);
return rqstp;
}
@@ -233,6 +266,10 @@ static inline void nfs_callback_bc_serv(u32 minorversion, struct rpc_xprt *xprt,
struct nfs_callback_data *cb_info)
{
}
+int nfs4_set_callback_sessionid(struct nfs_client *clp)
+{
+ return 0;
+}
#endif /* CONFIG_NFS_V4_1 */
/*
@@ -328,6 +365,9 @@ static int check_gss_callback_principal(struct nfs_client *clp,
struct rpc_clnt *r = clp->cl_rpcclient;
char *p = svc_gss_principal(rqstp);
+ /* No RPC_AUTH_GSS on NFSv4.1 back channel yet */
+ if (clp->cl_minorversion != 0)
+ return SVC_DROP;
/*
* It might just be a normal user principal, in which case
* userspace won't bother to tell us the name at all.
@@ -345,6 +385,23 @@ static int check_gss_callback_principal(struct nfs_client *clp,
return SVC_OK;
}
+/* pg_authenticate method helper */
+static struct nfs_client *nfs_cb_find_client(struct svc_rqst *rqstp)
+{
+ struct nfs4_sessionid *sessionid = bc_xprt_sid(rqstp);
+ int is_cb_compound = rqstp->rq_proc == CB_COMPOUND ? 1 : 0;
+
+ dprintk("--> %s rq_proc %d\n", __func__, rqstp->rq_proc);
+ if (svc_is_backchannel(rqstp))
+ /* Sessionid (usually) set after CB_NULL ping */
+ return nfs4_find_client_sessionid(svc_addr(rqstp), sessionid,
+ is_cb_compound);
+ else
+ /* No callback identifier in pg_authenticate */
+ return nfs4_find_client_no_ident(svc_addr(rqstp));
+}
+
+/* pg_authenticate method for nfsv4 callback threads. */
static int nfs_callback_authenticate(struct svc_rqst *rqstp)
{
struct nfs_client *clp;
@@ -352,7 +409,7 @@ static int nfs_callback_authenticate(struct svc_rqst *rqstp)
int ret = SVC_OK;
/* Don't talk to strangers */
- clp = nfs_find_client(svc_addr(rqstp), 4);
+ clp = nfs_cb_find_client(rqstp);
if (clp == NULL)
return SVC_DROP;
diff --git a/fs/nfs/callback.h b/fs/nfs/callback.h
index 85a7cfd1b8d..d3b44f9bd74 100644
--- a/fs/nfs/callback.h
+++ b/fs/nfs/callback.h
@@ -34,10 +34,17 @@ enum nfs4_callback_opnum {
OP_CB_ILLEGAL = 10044,
};
+struct cb_process_state {
+ __be32 drc_status;
+ struct nfs_client *clp;
+ struct nfs4_sessionid *svc_sid; /* v4.1 callback service sessionid */
+};
+
struct cb_compound_hdr_arg {
unsigned int taglen;
const char *tag;
unsigned int minorversion;
+ unsigned int cb_ident; /* v4.0 callback identifier */
unsigned nops;
};
@@ -103,14 +110,23 @@ struct cb_sequenceres {
uint32_t csr_target_highestslotid;
};
-extern unsigned nfs4_callback_sequence(struct cb_sequenceargs *args,
- struct cb_sequenceres *res);
+extern __be32 nfs4_callback_sequence(struct cb_sequenceargs *args,
+ struct cb_sequenceres *res,
+ struct cb_process_state *cps);
extern int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation,
const nfs4_stateid *stateid);
#define RCA4_TYPE_MASK_RDATA_DLG 0
#define RCA4_TYPE_MASK_WDATA_DLG 1
+#define RCA4_TYPE_MASK_DIR_DLG 2
+#define RCA4_TYPE_MASK_FILE_LAYOUT 3
+#define RCA4_TYPE_MASK_BLK_LAYOUT 4
+#define RCA4_TYPE_MASK_OBJ_LAYOUT_MIN 8
+#define RCA4_TYPE_MASK_OBJ_LAYOUT_MAX 9
+#define RCA4_TYPE_MASK_OTHER_LAYOUT_MIN 12
+#define RCA4_TYPE_MASK_OTHER_LAYOUT_MAX 15
+#define RCA4_TYPE_MASK_ALL 0xf31f
struct cb_recallanyargs {
struct sockaddr *craa_addr;
@@ -118,25 +134,52 @@ struct cb_recallanyargs {
uint32_t craa_type_mask;
};
-extern unsigned nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy);
+extern __be32 nfs4_callback_recallany(struct cb_recallanyargs *args,
+ void *dummy,
+ struct cb_process_state *cps);
struct cb_recallslotargs {
struct sockaddr *crsa_addr;
uint32_t crsa_target_max_slots;
};
-extern unsigned nfs4_callback_recallslot(struct cb_recallslotargs *args,
- void *dummy);
+extern __be32 nfs4_callback_recallslot(struct cb_recallslotargs *args,
+ void *dummy,
+ struct cb_process_state *cps);
+
+struct cb_layoutrecallargs {
+ struct sockaddr *cbl_addr;
+ uint32_t cbl_recall_type;
+ uint32_t cbl_layout_type;
+ uint32_t cbl_layoutchanged;
+ union {
+ struct {
+ struct nfs_fh cbl_fh;
+ struct pnfs_layout_range cbl_range;
+ nfs4_stateid cbl_stateid;
+ };
+ struct nfs_fsid cbl_fsid;
+ };
+};
-#endif /* CONFIG_NFS_V4_1 */
+extern unsigned nfs4_callback_layoutrecall(
+ struct cb_layoutrecallargs *args,
+ void *dummy, struct cb_process_state *cps);
-extern __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res);
-extern __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy);
+extern void nfs4_check_drain_bc_complete(struct nfs4_session *ses);
+extern void nfs4_cb_take_slot(struct nfs_client *clp);
+#endif /* CONFIG_NFS_V4_1 */
+extern __be32 nfs4_callback_getattr(struct cb_getattrargs *args,
+ struct cb_getattrres *res,
+ struct cb_process_state *cps);
+extern __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy,
+ struct cb_process_state *cps);
#ifdef CONFIG_NFS_V4
extern int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt);
extern void nfs_callback_down(int minorversion);
extern int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation,
const nfs4_stateid *stateid);
+extern int nfs4_set_callback_sessionid(struct nfs_client *clp);
#endif /* CONFIG_NFS_V4 */
/*
* nfs41: Callbacks are expected to not cause substantial latency,
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c
index 2950fca0c61..4bb91cb2620 100644
--- a/fs/nfs/callback_proc.c
+++ b/fs/nfs/callback_proc.c
@@ -12,30 +12,33 @@
#include "callback.h"
#include "delegation.h"
#include "internal.h"
+#include "pnfs.h"
#ifdef NFS_DEBUG
#define NFSDBG_FACILITY NFSDBG_CALLBACK
#endif
-
-__be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res)
+
+__be32 nfs4_callback_getattr(struct cb_getattrargs *args,
+ struct cb_getattrres *res,
+ struct cb_process_state *cps)
{
- struct nfs_client *clp;
struct nfs_delegation *delegation;
struct nfs_inode *nfsi;
struct inode *inode;
+ res->status = htonl(NFS4ERR_OP_NOT_IN_SESSION);
+ if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */
+ goto out;
+
res->bitmap[0] = res->bitmap[1] = 0;
res->status = htonl(NFS4ERR_BADHANDLE);
- clp = nfs_find_client(args->addr, 4);
- if (clp == NULL)
- goto out;
dprintk("NFS: GETATTR callback request from %s\n",
- rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR));
+ rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR));
- inode = nfs_delegation_find_inode(clp, &args->fh);
+ inode = nfs_delegation_find_inode(cps->clp, &args->fh);
if (inode == NULL)
- goto out_putclient;
+ goto out;
nfsi = NFS_I(inode);
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
@@ -55,49 +58,41 @@ __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *
out_iput:
rcu_read_unlock();
iput(inode);
-out_putclient:
- nfs_put_client(clp);
out:
dprintk("%s: exit with status = %d\n", __func__, ntohl(res->status));
return res->status;
}
-__be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy)
+__be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy,
+ struct cb_process_state *cps)
{
- struct nfs_client *clp;
struct inode *inode;
__be32 res;
- res = htonl(NFS4ERR_BADHANDLE);
- clp = nfs_find_client(args->addr, 4);
- if (clp == NULL)
+ res = htonl(NFS4ERR_OP_NOT_IN_SESSION);
+ if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */
goto out;
dprintk("NFS: RECALL callback request from %s\n",
- rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR));
-
- do {
- struct nfs_client *prev = clp;
-
- inode = nfs_delegation_find_inode(clp, &args->fh);
- if (inode != NULL) {
- /* Set up a helper thread to actually return the delegation */
- switch (nfs_async_inode_return_delegation(inode, &args->stateid)) {
- case 0:
- res = 0;
- break;
- case -ENOENT:
- if (res != 0)
- res = htonl(NFS4ERR_BAD_STATEID);
- break;
- default:
- res = htonl(NFS4ERR_RESOURCE);
- }
- iput(inode);
- }
- clp = nfs_find_client_next(prev);
- nfs_put_client(prev);
- } while (clp != NULL);
+ rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR));
+
+ res = htonl(NFS4ERR_BADHANDLE);
+ inode = nfs_delegation_find_inode(cps->clp, &args->fh);
+ if (inode == NULL)
+ goto out;
+ /* Set up a helper thread to actually return the delegation */
+ switch (nfs_async_inode_return_delegation(inode, &args->stateid)) {
+ case 0:
+ res = 0;
+ break;
+ case -ENOENT:
+ if (res != 0)
+ res = htonl(NFS4ERR_BAD_STATEID);
+ break;
+ default:
+ res = htonl(NFS4ERR_RESOURCE);
+ }
+ iput(inode);
out:
dprintk("%s: exit with status = %d\n", __func__, ntohl(res));
return res;
@@ -113,6 +108,139 @@ int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation, const nf
#if defined(CONFIG_NFS_V4_1)
+static u32 initiate_file_draining(struct nfs_client *clp,
+ struct cb_layoutrecallargs *args)
+{
+ struct pnfs_layout_hdr *lo;
+ struct inode *ino;
+ bool found = false;
+ u32 rv = NFS4ERR_NOMATCHING_LAYOUT;
+ LIST_HEAD(free_me_list);
+
+ spin_lock(&clp->cl_lock);
+ list_for_each_entry(lo, &clp->cl_layouts, plh_layouts) {
+ if (nfs_compare_fh(&args->cbl_fh,
+ &NFS_I(lo->plh_inode)->fh))
+ continue;
+ ino = igrab(lo->plh_inode);
+ if (!ino)
+ continue;
+ found = true;
+ /* Without this, layout can be freed as soon
+ * as we release cl_lock.
+ */
+ get_layout_hdr(lo);
+ break;
+ }
+ spin_unlock(&clp->cl_lock);
+ if (!found)
+ return NFS4ERR_NOMATCHING_LAYOUT;
+
+ spin_lock(&ino->i_lock);
+ if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags) ||
+ mark_matching_lsegs_invalid(lo, &free_me_list,
+ args->cbl_range.iomode))
+ rv = NFS4ERR_DELAY;
+ else
+ rv = NFS4ERR_NOMATCHING_LAYOUT;
+ pnfs_set_layout_stateid(lo, &args->cbl_stateid, true);
+ spin_unlock(&ino->i_lock);
+ pnfs_free_lseg_list(&free_me_list);
+ put_layout_hdr(lo);
+ iput(ino);
+ return rv;
+}
+
+static u32 initiate_bulk_draining(struct nfs_client *clp,
+ struct cb_layoutrecallargs *args)
+{
+ struct pnfs_layout_hdr *lo;
+ struct inode *ino;
+ u32 rv = NFS4ERR_NOMATCHING_LAYOUT;
+ struct pnfs_layout_hdr *tmp;
+ LIST_HEAD(recall_list);
+ LIST_HEAD(free_me_list);
+ struct pnfs_layout_range range = {
+ .iomode = IOMODE_ANY,
+ .offset = 0,
+ .length = NFS4_MAX_UINT64,
+ };
+
+ spin_lock(&clp->cl_lock);
+ list_for_each_entry(lo, &clp->cl_layouts, plh_layouts) {
+ if ((args->cbl_recall_type == RETURN_FSID) &&
+ memcmp(&NFS_SERVER(lo->plh_inode)->fsid,
+ &args->cbl_fsid, sizeof(struct nfs_fsid)))
+ continue;
+ if (!igrab(lo->plh_inode))
+ continue;
+ get_layout_hdr(lo);
+ BUG_ON(!list_empty(&lo->plh_bulk_recall));
+ list_add(&lo->plh_bulk_recall, &recall_list);
+ }
+ spin_unlock(&clp->cl_lock);
+ list_for_each_entry_safe(lo, tmp,
+ &recall_list, plh_bulk_recall) {
+ ino = lo->plh_inode;
+ spin_lock(&ino->i_lock);
+ set_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags);
+ if (mark_matching_lsegs_invalid(lo, &free_me_list, range.iomode))
+ rv = NFS4ERR_DELAY;
+ list_del_init(&lo->plh_bulk_recall);
+ spin_unlock(&ino->i_lock);
+ put_layout_hdr(lo);
+ iput(ino);
+ }
+ pnfs_free_lseg_list(&free_me_list);
+ return rv;
+}
+
+static u32 do_callback_layoutrecall(struct nfs_client *clp,
+ struct cb_layoutrecallargs *args)
+{
+ u32 res = NFS4ERR_DELAY;
+
+ dprintk("%s enter, type=%i\n", __func__, args->cbl_recall_type);
+ if (test_and_set_bit(NFS4CLNT_LAYOUTRECALL, &clp->cl_state))
+ goto out;
+ if (args->cbl_recall_type == RETURN_FILE)
+ res = initiate_file_draining(clp, args);
+ else
+ res = initiate_bulk_draining(clp, args);
+ clear_bit(NFS4CLNT_LAYOUTRECALL, &clp->cl_state);
+out:
+ dprintk("%s returning %i\n", __func__, res);
+ return res;
+
+}
+
+__be32 nfs4_callback_layoutrecall(struct cb_layoutrecallargs *args,
+ void *dummy, struct cb_process_state *cps)
+{
+ u32 res;
+
+ dprintk("%s: -->\n", __func__);
+
+ if (cps->clp)
+ res = do_callback_layoutrecall(cps->clp, args);
+ else
+ res = NFS4ERR_OP_NOT_IN_SESSION;
+
+ dprintk("%s: exit with status = %d\n", __func__, res);
+ return cpu_to_be32(res);
+}
+
+static void pnfs_recall_all_layouts(struct nfs_client *clp)
+{
+ struct cb_layoutrecallargs args;
+
+ /* Pretend we got a CB_LAYOUTRECALL(ALL) */
+ memset(&args, 0, sizeof(args));
+ args.cbl_recall_type = RETURN_ALL;
+ /* FIXME we ignore errors, what should we do? */
+ do_callback_layoutrecall(clp, &args);
+}
+
int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid)
{
if (delegation == NULL)
@@ -185,42 +313,6 @@ validate_seqid(struct nfs4_slot_table *tbl, struct cb_sequenceargs * args)
}
/*
- * Returns a pointer to a held 'struct nfs_client' that matches the server's
- * address, major version number, and session ID. It is the caller's
- * responsibility to release the returned reference.
- *
- * Returns NULL if there are no connections with sessions, or if no session
- * matches the one of interest.
- */
- static struct nfs_client *find_client_with_session(
- const struct sockaddr *addr, u32 nfsversion,
- struct nfs4_sessionid *sessionid)
-{
- struct nfs_client *clp;
-
- clp = nfs_find_client(addr, 4);
- if (clp == NULL)
- return NULL;
-
- do {
- struct nfs_client *prev = clp;
-
- if (clp->cl_session != NULL) {
- if (memcmp(clp->cl_session->sess_id.data,
- sessionid->data,
- NFS4_MAX_SESSIONID_LEN) == 0) {
- /* Returns a held reference to clp */
- return clp;
- }
- }
- clp = nfs_find_client_next(prev);
- nfs_put_client(prev);
- } while (clp != NULL);
-
- return NULL;
-}
-
-/*
* For each referring call triple, check the session's slot table for
* a match. If the slot is in use and the sequence numbers match, the
* client is still waiting for a response to the original request.
@@ -276,20 +368,34 @@ out:
}
__be32 nfs4_callback_sequence(struct cb_sequenceargs *args,
- struct cb_sequenceres *res)
+ struct cb_sequenceres *res,
+ struct cb_process_state *cps)
{
struct nfs_client *clp;
int i;
__be32 status;
+ cps->clp = NULL;
+
status = htonl(NFS4ERR_BADSESSION);
- clp = find_client_with_session(args->csa_addr, 4, &args->csa_sessionid);
+ /* Incoming session must match the callback session */
+ if (memcmp(&args->csa_sessionid, cps->svc_sid, NFS4_MAX_SESSIONID_LEN))
+ goto out;
+
+ clp = nfs4_find_client_sessionid(args->csa_addr,
+ &args->csa_sessionid, 1);
if (clp == NULL)
goto out;
+ /* state manager is resetting the session */
+ if (test_bit(NFS4_SESSION_DRAINING, &clp->cl_session->session_state)) {
+ status = NFS4ERR_DELAY;
+ goto out;
+ }
+
status = validate_seqid(&clp->cl_session->bc_slot_table, args);
if (status)
- goto out_putclient;
+ goto out;
/*
* Check for pending referring calls. If a match is found, a
@@ -298,7 +404,7 @@ __be32 nfs4_callback_sequence(struct cb_sequenceargs *args,
*/
if (referring_call_exists(clp, args->csa_nrclists, args->csa_rclists)) {
status = htonl(NFS4ERR_DELAY);
- goto out_putclient;
+ goto out;
}
memcpy(&res->csr_sessionid, &args->csa_sessionid,
@@ -307,83 +413,93 @@ __be32 nfs4_callback_sequence(struct cb_sequenceargs *args,
res->csr_slotid = args->csa_slotid;
res->csr_highestslotid = NFS41_BC_MAX_CALLBACKS - 1;
res->csr_target_highestslotid = NFS41_BC_MAX_CALLBACKS - 1;
+ nfs4_cb_take_slot(clp);
+ cps->clp = clp; /* put in nfs4_callback_compound */
-out_putclient:
- nfs_put_client(clp);
out:
for (i = 0; i < args->csa_nrclists; i++)
kfree(args->csa_rclists[i].rcl_refcalls);
kfree(args->csa_rclists);
- if (status == htonl(NFS4ERR_RETRY_UNCACHED_REP))
- res->csr_status = 0;
- else
+ if (status == htonl(NFS4ERR_RETRY_UNCACHED_REP)) {
+ cps->drc_status = status;
+ status = 0;
+ } else
res->csr_status = status;
+
dprintk("%s: exit with status = %d res->csr_status %d\n", __func__,
ntohl(status), ntohl(res->csr_status));
return status;
}
-__be32 nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy)
+static bool
+validate_bitmap_values(unsigned long mask)
+{
+ return (mask & ~RCA4_TYPE_MASK_ALL) == 0;
+}
+
+__be32 nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy,
+ struct cb_process_state *cps)
{
- struct nfs_client *clp;
__be32 status;
fmode_t flags = 0;
- status = htonl(NFS4ERR_OP_NOT_IN_SESSION);
- clp = nfs_find_client(args->craa_addr, 4);
- if (clp == NULL)
+ status = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION);
+ if (!cps->clp) /* set in cb_sequence */
goto out;
dprintk("NFS: RECALL_ANY callback request from %s\n",
- rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR));
+ rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR));
+
+ status = cpu_to_be32(NFS4ERR_INVAL);
+ if (!validate_bitmap_values(args->craa_type_mask))
+ goto out;
+ status = cpu_to_be32(NFS4_OK);
if (test_bit(RCA4_TYPE_MASK_RDATA_DLG, (const unsigned long *)
&args->craa_type_mask))
flags = FMODE_READ;
if (test_bit(RCA4_TYPE_MASK_WDATA_DLG, (const unsigned long *)
&args->craa_type_mask))
flags |= FMODE_WRITE;
-
+ if (test_bit(RCA4_TYPE_MASK_FILE_LAYOUT, (const unsigned long *)
+ &args->craa_type_mask))
+ pnfs_recall_all_layouts(cps->clp);
if (flags)
- nfs_expire_all_delegation_types(clp, flags);
- status = htonl(NFS4_OK);
+ nfs_expire_all_delegation_types(cps->clp, flags);
out:
dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
return status;
}
/* Reduce the fore channel's max_slots to the target value */
-__be32 nfs4_callback_recallslot(struct cb_recallslotargs *args, void *dummy)
+__be32 nfs4_callback_recallslot(struct cb_recallslotargs *args, void *dummy,
+ struct cb_process_state *cps)
{
- struct nfs_client *clp;
struct nfs4_slot_table *fc_tbl;
__be32 status;
status = htonl(NFS4ERR_OP_NOT_IN_SESSION);
- clp = nfs_find_client(args->crsa_addr, 4);
- if (clp == NULL)
+ if (!cps->clp) /* set in cb_sequence */
goto out;
dprintk("NFS: CB_RECALL_SLOT request from %s target max slots %d\n",
- rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR),
+ rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR),
args->crsa_target_max_slots);
- fc_tbl = &clp->cl_session->fc_slot_table;
+ fc_tbl = &cps->clp->cl_session->fc_slot_table;
status = htonl(NFS4ERR_BAD_HIGH_SLOT);
if (args->crsa_target_max_slots > fc_tbl->max_slots ||
args->crsa_target_max_slots < 1)
- goto out_putclient;
+ goto out;
status = htonl(NFS4_OK);
if (args->crsa_target_max_slots == fc_tbl->max_slots)
- goto out_putclient;
+ goto out;
fc_tbl->target_max_slots = args->crsa_target_max_slots;
- nfs41_handle_recall_slot(clp);
-out_putclient:
- nfs_put_client(clp); /* balance nfs_find_client */
+ nfs41_handle_recall_slot(cps->clp);
out:
dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
return status;
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index 05af212f0ed..23112c263f8 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -10,8 +10,10 @@
#include <linux/nfs4.h>
#include <linux/nfs_fs.h>
#include <linux/slab.h>
+#include <linux/sunrpc/bc_xprt.h>
#include "nfs4_fs.h"
#include "callback.h"
+#include "internal.h"
#define CB_OP_TAGLEN_MAXSZ (512)
#define CB_OP_HDR_RES_MAXSZ (2 + CB_OP_TAGLEN_MAXSZ)
@@ -22,6 +24,7 @@
#define CB_OP_RECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
#if defined(CONFIG_NFS_V4_1)
+#define CB_OP_LAYOUTRECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
#define CB_OP_SEQUENCE_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \
4 + 1 + 3)
#define CB_OP_RECALLANY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
@@ -33,7 +36,8 @@
/* Internal error code */
#define NFS4ERR_RESOURCE_HDR 11050
-typedef __be32 (*callback_process_op_t)(void *, void *);
+typedef __be32 (*callback_process_op_t)(void *, void *,
+ struct cb_process_state *);
typedef __be32 (*callback_decode_arg_t)(struct svc_rqst *, struct xdr_stream *, void *);
typedef __be32 (*callback_encode_res_t)(struct svc_rqst *, struct xdr_stream *, void *);
@@ -160,7 +164,7 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound
hdr->minorversion = ntohl(*p++);
/* Check minor version is zero or one. */
if (hdr->minorversion <= 1) {
- p++; /* skip callback_ident */
+ hdr->cb_ident = ntohl(*p++); /* ignored by v4.1 */
} else {
printk(KERN_WARNING "%s: NFSv4 server callback with "
"illegal minor version %u!\n",
@@ -220,6 +224,66 @@ out:
#if defined(CONFIG_NFS_V4_1)
+static __be32 decode_layoutrecall_args(struct svc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct cb_layoutrecallargs *args)
+{
+ __be32 *p;
+ __be32 status = 0;
+ uint32_t iomode;
+
+ args->cbl_addr = svc_addr(rqstp);
+ p = read_buf(xdr, 4 * sizeof(uint32_t));
+ if (unlikely(p == NULL)) {
+ status = htonl(NFS4ERR_BADXDR);
+ goto out;
+ }
+
+ args->cbl_layout_type = ntohl(*p++);
+ /* Depite the spec's xdr, iomode really belongs in the FILE switch,
+ * as it is unuseable and ignored with the other types.
+ */
+ iomode = ntohl(*p++);
+ args->cbl_layoutchanged = ntohl(*p++);
+ args->cbl_recall_type = ntohl(*p++);
+
+ if (args->cbl_recall_type == RETURN_FILE) {
+ args->cbl_range.iomode = iomode;
+ status = decode_fh(xdr, &args->cbl_fh);
+ if (unlikely(status != 0))
+ goto out;
+
+ p = read_buf(xdr, 2 * sizeof(uint64_t));
+ if (unlikely(p == NULL)) {
+ status = htonl(NFS4ERR_BADXDR);
+ goto out;
+ }
+ p = xdr_decode_hyper(p, &args->cbl_range.offset);
+ p = xdr_decode_hyper(p, &args->cbl_range.length);
+ status = decode_stateid(xdr, &args->cbl_stateid);
+ if (unlikely(status != 0))
+ goto out;
+ } else if (args->cbl_recall_type == RETURN_FSID) {
+ p = read_buf(xdr, 2 * sizeof(uint64_t));
+ if (unlikely(p == NULL)) {
+ status = htonl(NFS4ERR_BADXDR);
+ goto out;
+ }
+ p = xdr_decode_hyper(p, &args->cbl_fsid.major);
+ p = xdr_decode_hyper(p, &args->cbl_fsid.minor);
+ } else if (args->cbl_recall_type != RETURN_ALL) {
+ status = htonl(NFS4ERR_BADXDR);
+ goto out;
+ }
+ dprintk("%s: ltype 0x%x iomode %d changed %d recall_type %d\n",
+ __func__,
+ args->cbl_layout_type, iomode,
+ args->cbl_layoutchanged, args->cbl_recall_type);
+out:
+ dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
+ return status;
+}
+
static __be32 decode_sessionid(struct xdr_stream *xdr,
struct nfs4_sessionid *sid)
{
@@ -574,10 +638,10 @@ preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op)
case OP_CB_SEQUENCE:
case OP_CB_RECALL_ANY:
case OP_CB_RECALL_SLOT:
+ case OP_CB_LAYOUTRECALL:
*op = &callback_ops[op_nr];
break;
- case OP_CB_LAYOUTRECALL:
case OP_CB_NOTIFY_DEVICEID:
case OP_CB_NOTIFY:
case OP_CB_PUSH_DELEG:
@@ -593,6 +657,37 @@ preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op)
return htonl(NFS_OK);
}
+static void nfs4_callback_free_slot(struct nfs4_session *session)
+{
+ struct nfs4_slot_table *tbl = &session->bc_slot_table;
+
+ spin_lock(&tbl->slot_tbl_lock);
+ /*
+ * Let the state manager know callback processing done.
+ * A single slot, so highest used slotid is either 0 or -1
+ */
+ tbl->highest_used_slotid--;
+ nfs4_check_drain_bc_complete(session);
+ spin_unlock(&tbl->slot_tbl_lock);
+}
+
+static void nfs4_cb_free_slot(struct nfs_client *clp)
+{
+ if (clp && clp->cl_session)
+ nfs4_callback_free_slot(clp->cl_session);
+}
+
+/* A single slot, so highest used slotid is either 0 or -1 */
+void nfs4_cb_take_slot(struct nfs_client *clp)
+{
+ struct nfs4_slot_table *tbl = &clp->cl_session->bc_slot_table;
+
+ spin_lock(&tbl->slot_tbl_lock);
+ tbl->highest_used_slotid++;
+ BUG_ON(tbl->highest_used_slotid != 0);
+ spin_unlock(&tbl->slot_tbl_lock);
+}
+
#else /* CONFIG_NFS_V4_1 */
static __be32
@@ -601,6 +696,9 @@ preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op)
return htonl(NFS4ERR_MINOR_VERS_MISMATCH);
}
+static void nfs4_cb_free_slot(struct nfs_client *clp)
+{
+}
#endif /* CONFIG_NFS_V4_1 */
static __be32
@@ -621,7 +719,8 @@ preprocess_nfs4_op(unsigned int op_nr, struct callback_op **op)
static __be32 process_op(uint32_t minorversion, int nop,
struct svc_rqst *rqstp,
struct xdr_stream *xdr_in, void *argp,
- struct xdr_stream *xdr_out, void *resp, int* drc_status)
+ struct xdr_stream *xdr_out, void *resp,
+ struct cb_process_state *cps)
{
struct callback_op *op = &callback_ops[0];
unsigned int op_nr;
@@ -644,8 +743,8 @@ static __be32 process_op(uint32_t minorversion, int nop,
if (status)
goto encode_hdr;
- if (*drc_status) {
- status = *drc_status;
+ if (cps->drc_status) {
+ status = cps->drc_status;
goto encode_hdr;
}
@@ -653,16 +752,10 @@ static __be32 process_op(uint32_t minorversion, int nop,
if (maxlen > 0 && maxlen < PAGE_SIZE) {
status = op->decode_args(rqstp, xdr_in, argp);
if (likely(status == 0))
- status = op->process_op(argp, resp);
+ status = op->process_op(argp, resp, cps);
} else
status = htonl(NFS4ERR_RESOURCE);
- /* Only set by OP_CB_SEQUENCE processing */
- if (status == htonl(NFS4ERR_RETRY_UNCACHED_REP)) {
- *drc_status = status;
- status = 0;
- }
-
encode_hdr:
res = encode_op_hdr(xdr_out, op_nr, status);
if (unlikely(res))
@@ -681,8 +774,11 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *r
struct cb_compound_hdr_arg hdr_arg = { 0 };
struct cb_compound_hdr_res hdr_res = { NULL };
struct xdr_stream xdr_in, xdr_out;
- __be32 *p;
- __be32 status, drc_status = 0;
+ __be32 *p, status;
+ struct cb_process_state cps = {
+ .drc_status = 0,
+ .clp = NULL,
+ };
unsigned int nops = 0;
dprintk("%s: start\n", __func__);
@@ -696,6 +792,13 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *r
if (status == __constant_htonl(NFS4ERR_RESOURCE))
return rpc_garbage_args;
+ if (hdr_arg.minorversion == 0) {
+ cps.clp = nfs4_find_client_ident(hdr_arg.cb_ident);
+ if (!cps.clp)
+ return rpc_drop_reply;
+ } else
+ cps.svc_sid = bc_xprt_sid(rqstp);
+
hdr_res.taglen = hdr_arg.taglen;
hdr_res.tag = hdr_arg.tag;
if (encode_compound_hdr_res(&xdr_out, &hdr_res) != 0)
@@ -703,7 +806,7 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *r
while (status == 0 && nops != hdr_arg.nops) {
status = process_op(hdr_arg.minorversion, nops, rqstp,
- &xdr_in, argp, &xdr_out, resp, &drc_status);
+ &xdr_in, argp, &xdr_out, resp, &cps);
nops++;
}
@@ -716,6 +819,8 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *r
*hdr_res.status = status;
*hdr_res.nops = htonl(nops);
+ nfs4_cb_free_slot(cps.clp);
+ nfs_put_client(cps.clp);
dprintk("%s: done, status = %u\n", __func__, ntohl(status));
return rpc_success;
}
@@ -739,6 +844,12 @@ static struct callback_op callback_ops[] = {
.res_maxsize = CB_OP_RECALL_RES_MAXSZ,
},
#if defined(CONFIG_NFS_V4_1)
+ [OP_CB_LAYOUTRECALL] = {
+ .process_op = (callback_process_op_t)nfs4_callback_layoutrecall,
+ .decode_args =
+ (callback_decode_arg_t)decode_layoutrecall_args,
+ .res_maxsize = CB_OP_LAYOUTRECALL_RES_MAXSZ,
+ },
[OP_CB_SEQUENCE] = {
.process_op = (callback_process_op_t)nfs4_callback_sequence,
.decode_args = (callback_decode_arg_t)decode_cb_sequence_args,
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 0870d0d4efc..192f2f86026 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -56,6 +56,30 @@ static DEFINE_SPINLOCK(nfs_client_lock);
static LIST_HEAD(nfs_client_list);
static LIST_HEAD(nfs_volume_list);
static DECLARE_WAIT_QUEUE_HEAD(nfs_client_active_wq);
+#ifdef CONFIG_NFS_V4
+static DEFINE_IDR(cb_ident_idr); /* Protected by nfs_client_lock */
+
+/*
+ * Get a unique NFSv4.0 callback identifier which will be used
+ * by the V4.0 callback service to lookup the nfs_client struct
+ */
+static int nfs_get_cb_ident_idr(struct nfs_client *clp, int minorversion)
+{
+ int ret = 0;
+
+ if (clp->rpc_ops->version != 4 || minorversion != 0)
+ return ret;
+retry:
+ if (!idr_pre_get(&cb_ident_idr, GFP_KERNEL))
+ return -ENOMEM;
+ spin_lock(&nfs_client_lock);
+ ret = idr_get_new(&cb_ident_idr, clp, &clp->cl_cb_ident);
+ spin_unlock(&nfs_client_lock);
+ if (ret == -EAGAIN)
+ goto retry;
+ return ret;
+}
+#endif /* CONFIG_NFS_V4 */
/*
* RPC cruft for NFS
@@ -144,7 +168,10 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_
clp->cl_proto = cl_init->proto;
#ifdef CONFIG_NFS_V4
- INIT_LIST_HEAD(&clp->cl_delegations);
+ err = nfs_get_cb_ident_idr(clp, cl_init->minorversion);
+ if (err)
+ goto error_cleanup;
+
spin_lock_init(&clp->cl_lock);
INIT_DELAYED_WORK(&clp->cl_renewd, nfs4_renew_state);
rpc_init_wait_queue(&clp->cl_rpcwaitq, "NFS client");
@@ -170,21 +197,17 @@ error_0:
}
#ifdef CONFIG_NFS_V4
-/*
- * Clears/puts all minor version specific parts from an nfs_client struct
- * reverting it to minorversion 0.
- */
-static void nfs4_clear_client_minor_version(struct nfs_client *clp)
-{
#ifdef CONFIG_NFS_V4_1
- if (nfs4_has_session(clp)) {
+static void nfs4_shutdown_session(struct nfs_client *clp)
+{
+ if (nfs4_has_session(clp))
nfs4_destroy_session(clp->cl_session);
- clp->cl_session = NULL;
- }
-
- clp->cl_mvops = nfs_v4_minor_ops[0];
-#endif /* CONFIG_NFS_V4_1 */
}
+#else /* CONFIG_NFS_V4_1 */
+static void nfs4_shutdown_session(struct nfs_client *clp)
+{
+}
+#endif /* CONFIG_NFS_V4_1 */
/*
* Destroy the NFS4 callback service
@@ -199,17 +222,49 @@ static void nfs4_shutdown_client(struct nfs_client *clp)
{
if (__test_and_clear_bit(NFS_CS_RENEWD, &clp->cl_res_state))
nfs4_kill_renewd(clp);
- nfs4_clear_client_minor_version(clp);
+ nfs4_shutdown_session(clp);
nfs4_destroy_callback(clp);
if (__test_and_clear_bit(NFS_CS_IDMAP, &clp->cl_res_state))
nfs_idmap_delete(clp);
rpc_destroy_wait_queue(&clp->cl_rpcwaitq);
}
+
+/* idr_remove_all is not needed as all id's are removed by nfs_put_client */
+void nfs_cleanup_cb_ident_idr(void)
+{
+ idr_destroy(&cb_ident_idr);
+}
+
+/* nfs_client_lock held */
+static void nfs_cb_idr_remove_locked(struct nfs_client *clp)
+{
+ if (clp->cl_cb_ident)
+ idr_remove(&cb_ident_idr, clp->cl_cb_ident);
+}
+
+static void pnfs_init_server(struct nfs_server *server)
+{
+ rpc_init_wait_queue(&server->roc_rpcwaitq, "pNFS ROC");
+}
+
#else
static void nfs4_shutdown_client(struct nfs_client *clp)
{
}
+
+void nfs_cleanup_cb_ident_idr(void)
+{
+}
+
+static void nfs_cb_idr_remove_locked(struct nfs_client *clp)
+{
+}
+
+static void pnfs_init_server(struct nfs_server *server)
+{
+}
+
#endif /* CONFIG_NFS_V4 */
/*
@@ -248,6 +303,7 @@ void nfs_put_client(struct nfs_client *clp)
if (atomic_dec_and_lock(&clp->cl_count, &nfs_client_lock)) {
list_del(&clp->cl_share_link);
+ nfs_cb_idr_remove_locked(clp);
spin_unlock(&nfs_client_lock);
BUG_ON(!list_empty(&clp->cl_superblocks));
@@ -363,70 +419,28 @@ static int nfs_sockaddr_cmp(const struct sockaddr *sa1,
return 0;
}
-/*
- * Find a client by IP address and protocol version
- * - returns NULL if no such client
- */
-struct nfs_client *nfs_find_client(const struct sockaddr *addr, u32 nfsversion)
-{
- struct nfs_client *clp;
-
- spin_lock(&nfs_client_lock);
- list_for_each_entry(clp, &nfs_client_list, cl_share_link) {
- struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr;
-
- /* Don't match clients that failed to initialise properly */
- if (!(clp->cl_cons_state == NFS_CS_READY ||
- clp->cl_cons_state == NFS_CS_SESSION_INITING))
- continue;
-
- /* Different NFS versions cannot share the same nfs_client */
- if (clp->rpc_ops->version != nfsversion)
- continue;
-
- /* Match only the IP address, not the port number */
- if (!nfs_sockaddr_match_ipaddr(addr, clap))
- continue;
-
- atomic_inc(&clp->cl_count);
- spin_unlock(&nfs_client_lock);
- return clp;
- }
- spin_unlock(&nfs_client_lock);
- return NULL;
-}
-
-/*
- * Find a client by IP address and protocol version
- * - returns NULL if no such client
- */
-struct nfs_client *nfs_find_client_next(struct nfs_client *clp)
+/* Common match routine for v4.0 and v4.1 callback services */
+bool
+nfs4_cb_match_client(const struct sockaddr *addr, struct nfs_client *clp,
+ u32 minorversion)
{
- struct sockaddr *sap = (struct sockaddr *)&clp->cl_addr;
- u32 nfsvers = clp->rpc_ops->version;
+ struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr;
- spin_lock(&nfs_client_lock);
- list_for_each_entry_continue(clp, &nfs_client_list, cl_share_link) {
- struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr;
+ /* Don't match clients that failed to initialise */
+ if (!(clp->cl_cons_state == NFS_CS_READY ||
+ clp->cl_cons_state == NFS_CS_SESSION_INITING))
+ return false;
- /* Don't match clients that failed to initialise properly */
- if (clp->cl_cons_state != NFS_CS_READY)
- continue;
+ /* Match the version and minorversion */
+ if (clp->rpc_ops->version != 4 ||
+ clp->cl_minorversion != minorversion)
+ return false;
- /* Different NFS versions cannot share the same nfs_client */
- if (clp->rpc_ops->version != nfsvers)
- continue;
+ /* Match only the IP address, not the port number */
+ if (!nfs_sockaddr_match_ipaddr(addr, clap))
+ return false;
- /* Match only the IP address, not the port number */
- if (!nfs_sockaddr_match_ipaddr(sap, clap))
- continue;
-
- atomic_inc(&clp->cl_count);
- spin_unlock(&nfs_client_lock);
- return clp;
- }
- spin_unlock(&nfs_client_lock);
- return NULL;
+ return true;
}
/*
@@ -988,6 +1002,27 @@ static void nfs_server_copy_userdata(struct nfs_server *target, struct nfs_serve
target->options = source->options;
}
+static void nfs_server_insert_lists(struct nfs_server *server)
+{
+ struct nfs_client *clp = server->nfs_client;
+
+ spin_lock(&nfs_client_lock);
+ list_add_tail_rcu(&server->client_link, &clp->cl_superblocks);
+ list_add_tail(&server->master_link, &nfs_volume_list);
+ spin_unlock(&nfs_client_lock);
+
+}
+
+static void nfs_server_remove_lists(struct nfs_server *server)
+{
+ spin_lock(&nfs_client_lock);
+ list_del_rcu(&server->client_link);
+ list_del(&server->master_link);
+ spin_unlock(&nfs_client_lock);
+
+ synchronize_rcu();
+}
+
/*
* Allocate and initialise a server record
*/
@@ -1004,6 +1039,7 @@ static struct nfs_server *nfs_alloc_server(void)
/* Zero out the NFS state stuff */
INIT_LIST_HEAD(&server->client_link);
INIT_LIST_HEAD(&server->master_link);
+ INIT_LIST_HEAD(&server->delegations);
atomic_set(&server->active, 0);
@@ -1019,6 +1055,8 @@ static struct nfs_server *nfs_alloc_server(void)
return NULL;
}
+ pnfs_init_server(server);
+
return server;
}
@@ -1029,11 +1067,8 @@ void nfs_free_server(struct nfs_server *server)
{
dprintk("--> nfs_free_server()\n");
+ nfs_server_remove_lists(server);
unset_pnfs_layoutdriver(server);
- spin_lock(&nfs_client_lock);
- list_del(&server->client_link);
- list_del(&server->master_link);
- spin_unlock(&nfs_client_lock);
if (server->destroy != NULL)
server->destroy(server);
@@ -1108,11 +1143,7 @@ struct nfs_server *nfs_create_server(const struct nfs_parsed_mount_data *data,
(unsigned long long) server->fsid.major,
(unsigned long long) server->fsid.minor);
- spin_lock(&nfs_client_lock);
- list_add_tail(&server->client_link, &server->nfs_client->cl_superblocks);
- list_add_tail(&server->master_link, &nfs_volume_list);
- spin_unlock(&nfs_client_lock);
-
+ nfs_server_insert_lists(server);
server->mount_time = jiffies;
nfs_free_fattr(fattr);
return server;
@@ -1125,6 +1156,101 @@ error:
#ifdef CONFIG_NFS_V4
/*
+ * NFSv4.0 callback thread helper
+ *
+ * Find a client by IP address, protocol version, and minorversion
+ *
+ * Called from the pg_authenticate method. The callback identifier
+ * is not used as it has not been decoded.
+ *
+ * Returns NULL if no such client
+ */
+struct nfs_client *
+nfs4_find_client_no_ident(const struct sockaddr *addr)
+{
+ struct nfs_client *clp;
+
+ spin_lock(&nfs_client_lock);
+ list_for_each_entry(clp, &nfs_client_list, cl_share_link) {
+ if (nfs4_cb_match_client(addr, clp, 0) == false)
+ continue;
+ atomic_inc(&clp->cl_count);
+ spin_unlock(&nfs_client_lock);
+ return clp;
+ }
+ spin_unlock(&nfs_client_lock);
+ return NULL;
+}
+
+/*
+ * NFSv4.0 callback thread helper
+ *
+ * Find a client by callback identifier
+ */
+struct nfs_client *
+nfs4_find_client_ident(int cb_ident)
+{
+ struct nfs_client *clp;
+
+ spin_lock(&nfs_client_lock);
+ clp = idr_find(&cb_ident_idr, cb_ident);
+ if (clp)
+ atomic_inc(&clp->cl_count);
+ spin_unlock(&nfs_client_lock);
+ return clp;
+}
+
+#if defined(CONFIG_NFS_V4_1)
+/*
+ * NFSv4.1 callback thread helper
+ * For CB_COMPOUND calls, find a client by IP address, protocol version,
+ * minorversion, and sessionID
+ *
+ * CREATE_SESSION triggers a CB_NULL ping from servers. The callback service
+ * sessionid can only be set after the CREATE_SESSION return, so a CB_NULL
+ * can arrive before the callback sessionid is set. For CB_NULL calls,
+ * find a client by IP address protocol version, and minorversion.
+ *
+ * Returns NULL if no such client
+ */
+struct nfs_client *
+nfs4_find_client_sessionid(const struct sockaddr *addr,
+ struct nfs4_sessionid *sid, int is_cb_compound)
+{
+ struct nfs_client *clp;
+
+ spin_lock(&nfs_client_lock);
+ list_for_each_entry(clp, &nfs_client_list, cl_share_link) {
+ if (nfs4_cb_match_client(addr, clp, 1) == false)
+ continue;
+
+ if (!nfs4_has_session(clp))
+ continue;
+
+ /* Match sessionid unless cb_null call*/
+ if (is_cb_compound && (memcmp(clp->cl_session->sess_id.data,
+ sid->data, NFS4_MAX_SESSIONID_LEN) != 0))
+ continue;
+
+ atomic_inc(&clp->cl_count);
+ spin_unlock(&nfs_client_lock);
+ return clp;
+ }
+ spin_unlock(&nfs_client_lock);
+ return NULL;
+}
+
+#else /* CONFIG_NFS_V4_1 */
+
+struct nfs_client *
+nfs4_find_client_sessionid(const struct sockaddr *addr,
+ struct nfs4_sessionid *sid, int is_cb_compound)
+{
+ return NULL;
+}
+#endif /* CONFIG_NFS_V4_1 */
+
+/*
* Initialize the NFS4 callback service
*/
static int nfs4_init_callback(struct nfs_client *clp)
@@ -1342,11 +1468,7 @@ static int nfs4_server_common_setup(struct nfs_server *server,
if (server->namelen == 0 || server->namelen > NFS4_MAXNAMLEN)
server->namelen = NFS4_MAXNAMLEN;
- spin_lock(&nfs_client_lock);
- list_add_tail(&server->client_link, &server->nfs_client->cl_superblocks);
- list_add_tail(&server->master_link, &nfs_volume_list);
- spin_unlock(&nfs_client_lock);
-
+ nfs_server_insert_lists(server);
server->mount_time = jiffies;
out:
nfs_free_fattr(fattr);
@@ -1551,11 +1673,7 @@ struct nfs_server *nfs_clone_server(struct nfs_server *source,
if (error < 0)
goto out_free_server;
- spin_lock(&nfs_client_lock);
- list_add_tail(&server->client_link, &server->nfs_client->cl_superblocks);
- list_add_tail(&server->master_link, &nfs_volume_list);
- spin_unlock(&nfs_client_lock);
-
+ nfs_server_insert_lists(server);
server->mount_time = jiffies;
nfs_free_fattr(fattr_fsinfo);
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index 1fd62fc49be..364e4328f39 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -40,11 +40,23 @@ static void nfs_free_delegation(struct nfs_delegation *delegation)
call_rcu(&delegation->rcu, nfs_free_delegation_callback);
}
+/**
+ * nfs_mark_delegation_referenced - set delegation's REFERENCED flag
+ * @delegation: delegation to process
+ *
+ */
void nfs_mark_delegation_referenced(struct nfs_delegation *delegation)
{
set_bit(NFS_DELEGATION_REFERENCED, &delegation->flags);
}
+/**
+ * nfs_have_delegation - check if inode has a delegation
+ * @inode: inode to check
+ * @flags: delegation types to check for
+ *
+ * Returns one if inode has the indicated delegation, otherwise zero.
+ */
int nfs_have_delegation(struct inode *inode, fmode_t flags)
{
struct nfs_delegation *delegation;
@@ -119,10 +131,15 @@ again:
return 0;
}
-/*
- * Set up a delegation on an inode
+/**
+ * nfs_inode_reclaim_delegation - process a delegation reclaim request
+ * @inode: inode to process
+ * @cred: credential to use for request
+ * @res: new delegation state from server
+ *
*/
-void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res)
+void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred,
+ struct nfs_openres *res)
{
struct nfs_delegation *delegation;
struct rpc_cred *oldcred = NULL;
@@ -175,38 +192,52 @@ static struct inode *nfs_delegation_grab_inode(struct nfs_delegation *delegation
return inode;
}
-static struct nfs_delegation *nfs_detach_delegation_locked(struct nfs_inode *nfsi,
- const nfs4_stateid *stateid,
- struct nfs_client *clp)
+static struct nfs_delegation *
+nfs_detach_delegation_locked(struct nfs_inode *nfsi,
+ struct nfs_server *server)
{
struct nfs_delegation *delegation =
rcu_dereference_protected(nfsi->delegation,
- lockdep_is_held(&clp->cl_lock));
+ lockdep_is_held(&server->nfs_client->cl_lock));
if (delegation == NULL)
goto nomatch;
+
spin_lock(&delegation->lock);
- if (stateid != NULL && memcmp(delegation->stateid.data, stateid->data,
- sizeof(delegation->stateid.data)) != 0)
- goto nomatch_unlock;
list_del_rcu(&delegation->super_list);
delegation->inode = NULL;
nfsi->delegation_state = 0;
rcu_assign_pointer(nfsi->delegation, NULL);
spin_unlock(&delegation->lock);
return delegation;
-nomatch_unlock:
- spin_unlock(&delegation->lock);
nomatch:
return NULL;
}
-/*
- * Set up a delegation on an inode
+static struct nfs_delegation *nfs_detach_delegation(struct nfs_inode *nfsi,
+ struct nfs_server *server)
+{
+ struct nfs_client *clp = server->nfs_client;
+ struct nfs_delegation *delegation;
+
+ spin_lock(&clp->cl_lock);
+ delegation = nfs_detach_delegation_locked(nfsi, server);
+ spin_unlock(&clp->cl_lock);
+ return delegation;
+}
+
+/**
+ * nfs_inode_set_delegation - set up a delegation on an inode
+ * @inode: inode to which delegation applies
+ * @cred: cred to use for subsequent delegation processing
+ * @res: new delegation state from server
+ *
+ * Returns zero on success, or a negative errno value.
*/
int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res)
{
- struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
+ struct nfs_server *server = NFS_SERVER(inode);
+ struct nfs_client *clp = server->nfs_client;
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_delegation *delegation, *old_delegation;
struct nfs_delegation *freeme = NULL;
@@ -227,7 +258,7 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct
spin_lock(&clp->cl_lock);
old_delegation = rcu_dereference_protected(nfsi->delegation,
- lockdep_is_held(&clp->cl_lock));
+ lockdep_is_held(&clp->cl_lock));
if (old_delegation != NULL) {
if (memcmp(&delegation->stateid, &old_delegation->stateid,
sizeof(old_delegation->stateid)) == 0 &&
@@ -246,9 +277,9 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct
delegation = NULL;
goto out;
}
- freeme = nfs_detach_delegation_locked(nfsi, NULL, clp);
+ freeme = nfs_detach_delegation_locked(nfsi, server);
}
- list_add_rcu(&delegation->super_list, &clp->cl_delegations);
+ list_add_rcu(&delegation->super_list, &server->delegations);
nfsi->delegation_state = delegation->type;
rcu_assign_pointer(nfsi->delegation, delegation);
delegation = NULL;
@@ -290,73 +321,85 @@ out:
return err;
}
-/*
- * Return all delegations that have been marked for return
+/**
+ * nfs_client_return_marked_delegations - return previously marked delegations
+ * @clp: nfs_client to process
+ *
+ * Returns zero on success, or a negative errno value.
*/
int nfs_client_return_marked_delegations(struct nfs_client *clp)
{
struct nfs_delegation *delegation;
+ struct nfs_server *server;
struct inode *inode;
int err = 0;
restart:
rcu_read_lock();
- list_for_each_entry_rcu(delegation, &clp->cl_delegations, super_list) {
- if (!test_and_clear_bit(NFS_DELEGATION_RETURN, &delegation->flags))
- continue;
- inode = nfs_delegation_grab_inode(delegation);
- if (inode == NULL)
- continue;
- spin_lock(&clp->cl_lock);
- delegation = nfs_detach_delegation_locked(NFS_I(inode), NULL, clp);
- spin_unlock(&clp->cl_lock);
- rcu_read_unlock();
- if (delegation != NULL) {
- filemap_flush(inode->i_mapping);
- err = __nfs_inode_return_delegation(inode, delegation, 0);
+ list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
+ list_for_each_entry_rcu(delegation, &server->delegations,
+ super_list) {
+ if (!test_and_clear_bit(NFS_DELEGATION_RETURN,
+ &delegation->flags))
+ continue;
+ inode = nfs_delegation_grab_inode(delegation);
+ if (inode == NULL)
+ continue;
+ delegation = nfs_detach_delegation(NFS_I(inode),
+ server);
+ rcu_read_unlock();
+
+ if (delegation != NULL) {
+ filemap_flush(inode->i_mapping);
+ err = __nfs_inode_return_delegation(inode,
+ delegation, 0);
+ }
+ iput(inode);
+ if (!err)
+ goto restart;
+ set_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state);
+ return err;
}
- iput(inode);
- if (!err)
- goto restart;
- set_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state);
- return err;
}
rcu_read_unlock();
return 0;
}
-/*
- * This function returns the delegation without reclaiming opens
- * or protecting against delegation reclaims.
- * It is therefore really only safe to be called from
- * nfs4_clear_inode()
+/**
+ * nfs_inode_return_delegation_noreclaim - return delegation, don't reclaim opens
+ * @inode: inode to process
+ *
+ * Does not protect against delegation reclaims, therefore really only safe
+ * to be called from nfs4_clear_inode().
*/
void nfs_inode_return_delegation_noreclaim(struct inode *inode)
{
- struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
+ struct nfs_server *server = NFS_SERVER(inode);
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_delegation *delegation;
if (rcu_access_pointer(nfsi->delegation) != NULL) {
- spin_lock(&clp->cl_lock);
- delegation = nfs_detach_delegation_locked(nfsi, NULL, clp);
- spin_unlock(&clp->cl_lock);
+ delegation = nfs_detach_delegation(nfsi, server);
if (delegation != NULL)
nfs_do_return_delegation(inode, delegation, 0);
}
}
+/**
+ * nfs_inode_return_delegation - synchronously return a delegation
+ * @inode: inode to process
+ *
+ * Returns zero on success, or a negative errno value.
+ */
int nfs_inode_return_delegation(struct inode *inode)
{
- struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
+ struct nfs_server *server = NFS_SERVER(inode);
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_delegation *delegation;
int err = 0;
if (rcu_access_pointer(nfsi->delegation) != NULL) {
- spin_lock(&clp->cl_lock);
- delegation = nfs_detach_delegation_locked(nfsi, NULL, clp);
- spin_unlock(&clp->cl_lock);
+ delegation = nfs_detach_delegation(nfsi, server);
if (delegation != NULL) {
nfs_wb_all(inode);
err = __nfs_inode_return_delegation(inode, delegation, 1);
@@ -365,46 +408,61 @@ int nfs_inode_return_delegation(struct inode *inode)
return err;
}
-static void nfs_mark_return_delegation(struct nfs_client *clp, struct nfs_delegation *delegation)
+static void nfs_mark_return_delegation(struct nfs_delegation *delegation)
{
+ struct nfs_client *clp = NFS_SERVER(delegation->inode)->nfs_client;
+
set_bit(NFS_DELEGATION_RETURN, &delegation->flags);
set_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state);
}
-/*
- * Return all delegations associated to a super block
+/**
+ * nfs_super_return_all_delegations - return delegations for one superblock
+ * @sb: sb to process
+ *
*/
void nfs_super_return_all_delegations(struct super_block *sb)
{
- struct nfs_client *clp = NFS_SB(sb)->nfs_client;
+ struct nfs_server *server = NFS_SB(sb);
+ struct nfs_client *clp = server->nfs_client;
struct nfs_delegation *delegation;
if (clp == NULL)
return;
+
rcu_read_lock();
- list_for_each_entry_rcu(delegation, &clp->cl_delegations, super_list) {
+ list_for_each_entry_rcu(delegation, &server->delegations, super_list) {
spin_lock(&delegation->lock);
- if (delegation->inode != NULL && delegation->inode->i_sb == sb)
- set_bit(NFS_DELEGATION_RETURN, &delegation->flags);
+ set_bit(NFS_DELEGATION_RETURN, &delegation->flags);
spin_unlock(&delegation->lock);
}
rcu_read_unlock();
+
if (nfs_client_return_marked_delegations(clp) != 0)
nfs4_schedule_state_manager(clp);
}
-static
-void nfs_client_mark_return_all_delegation_types(struct nfs_client *clp, fmode_t flags)
+static void nfs_mark_return_all_delegation_types(struct nfs_server *server,
+ fmode_t flags)
{
struct nfs_delegation *delegation;
- rcu_read_lock();
- list_for_each_entry_rcu(delegation, &clp->cl_delegations, super_list) {
+ list_for_each_entry_rcu(delegation, &server->delegations, super_list) {
if ((delegation->type == (FMODE_READ|FMODE_WRITE)) && !(flags & FMODE_WRITE))
continue;
if (delegation->type & flags)
- nfs_mark_return_delegation(clp, delegation);
+ nfs_mark_return_delegation(delegation);
}
+}
+
+static void nfs_client_mark_return_all_delegation_types(struct nfs_client *clp,
+ fmode_t flags)
+{
+ struct nfs_server *server;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link)
+ nfs_mark_return_all_delegation_types(server, flags);
rcu_read_unlock();
}
@@ -419,19 +477,32 @@ static void nfs_delegation_run_state_manager(struct nfs_client *clp)
nfs4_schedule_state_manager(clp);
}
+/**
+ * nfs_expire_all_delegation_types
+ * @clp: client to process
+ * @flags: delegation types to expire
+ *
+ */
void nfs_expire_all_delegation_types(struct nfs_client *clp, fmode_t flags)
{
nfs_client_mark_return_all_delegation_types(clp, flags);
nfs_delegation_run_state_manager(clp);
}
+/**
+ * nfs_expire_all_delegations
+ * @clp: client to process
+ *
+ */
void nfs_expire_all_delegations(struct nfs_client *clp)
{
nfs_expire_all_delegation_types(clp, FMODE_READ|FMODE_WRITE);
}
-/*
- * Return all delegations following an NFS4ERR_CB_PATH_DOWN error.
+/**
+ * nfs_handle_cb_pathdown - return all delegations after NFS4ERR_CB_PATH_DOWN
+ * @clp: client to process
+ *
*/
void nfs_handle_cb_pathdown(struct nfs_client *clp)
{
@@ -440,29 +511,43 @@ void nfs_handle_cb_pathdown(struct nfs_client *clp)
nfs_client_mark_return_all_delegations(clp);
}
-static void nfs_client_mark_return_unreferenced_delegations(struct nfs_client *clp)
+static void nfs_mark_return_unreferenced_delegations(struct nfs_server *server)
{
struct nfs_delegation *delegation;
- rcu_read_lock();
- list_for_each_entry_rcu(delegation, &clp->cl_delegations, super_list) {
+ list_for_each_entry_rcu(delegation, &server->delegations, super_list) {
if (test_and_clear_bit(NFS_DELEGATION_REFERENCED, &delegation->flags))
continue;
- nfs_mark_return_delegation(clp, delegation);
+ nfs_mark_return_delegation(delegation);
}
- rcu_read_unlock();
}
+/**
+ * nfs_expire_unreferenced_delegations - Eliminate unused delegations
+ * @clp: nfs_client to process
+ *
+ */
void nfs_expire_unreferenced_delegations(struct nfs_client *clp)
{
- nfs_client_mark_return_unreferenced_delegations(clp);
+ struct nfs_server *server;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link)
+ nfs_mark_return_unreferenced_delegations(server);
+ rcu_read_unlock();
+
nfs_delegation_run_state_manager(clp);
}
-/*
- * Asynchronous delegation recall!
+/**
+ * nfs_async_inode_return_delegation - asynchronously return a delegation
+ * @inode: inode to process
+ * @stateid: state ID information from CB_RECALL arguments
+ *
+ * Returns zero on success, or a negative errno value.
*/
-int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid)
+int nfs_async_inode_return_delegation(struct inode *inode,
+ const nfs4_stateid *stateid)
{
struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
struct nfs_delegation *delegation;
@@ -474,22 +559,21 @@ int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *s
rcu_read_unlock();
return -ENOENT;
}
-
- nfs_mark_return_delegation(clp, delegation);
+ nfs_mark_return_delegation(delegation);
rcu_read_unlock();
+
nfs_delegation_run_state_manager(clp);
return 0;
}
-/*
- * Retrieve the inode associated with a delegation
- */
-struct inode *nfs_delegation_find_inode(struct nfs_client *clp, const struct nfs_fh *fhandle)
+static struct inode *
+nfs_delegation_find_inode_server(struct nfs_server *server,
+ const struct nfs_fh *fhandle)
{
struct nfs_delegation *delegation;
struct inode *res = NULL;
- rcu_read_lock();
- list_for_each_entry_rcu(delegation, &clp->cl_delegations, super_list) {
+
+ list_for_each_entry_rcu(delegation, &server->delegations, super_list) {
spin_lock(&delegation->lock);
if (delegation->inode != NULL &&
nfs_compare_fh(fhandle, &NFS_I(delegation->inode)->fh) == 0) {
@@ -499,49 +583,121 @@ struct inode *nfs_delegation_find_inode(struct nfs_client *clp, const struct nfs
if (res != NULL)
break;
}
+ return res;
+}
+
+/**
+ * nfs_delegation_find_inode - retrieve the inode associated with a delegation
+ * @clp: client state handle
+ * @fhandle: filehandle from a delegation recall
+ *
+ * Returns pointer to inode matching "fhandle," or NULL if a matching inode
+ * cannot be found.
+ */
+struct inode *nfs_delegation_find_inode(struct nfs_client *clp,
+ const struct nfs_fh *fhandle)
+{
+ struct nfs_server *server;
+ struct inode *res = NULL;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
+ res = nfs_delegation_find_inode_server(server, fhandle);
+ if (res != NULL)
+ break;
+ }
rcu_read_unlock();
return res;
}
-/*
- * Mark all delegations as needing to be reclaimed
+static void nfs_delegation_mark_reclaim_server(struct nfs_server *server)
+{
+ struct nfs_delegation *delegation;
+
+ list_for_each_entry_rcu(delegation, &server->delegations, super_list)
+ set_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags);
+}
+
+/**
+ * nfs_delegation_mark_reclaim - mark all delegations as needing to be reclaimed
+ * @clp: nfs_client to process
+ *
*/
void nfs_delegation_mark_reclaim(struct nfs_client *clp)
{
- struct nfs_delegation *delegation;
+ struct nfs_server *server;
+
rcu_read_lock();
- list_for_each_entry_rcu(delegation, &clp->cl_delegations, super_list)
- set_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags);
+ list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link)
+ nfs_delegation_mark_reclaim_server(server);
rcu_read_unlock();
}
-/*
- * Reap all unclaimed delegations after reboot recovery is done
+/**
+ * nfs_delegation_reap_unclaimed - reap unclaimed delegations after reboot recovery is done
+ * @clp: nfs_client to process
+ *
*/
void nfs_delegation_reap_unclaimed(struct nfs_client *clp)
{
struct nfs_delegation *delegation;
+ struct nfs_server *server;
struct inode *inode;
+
restart:
rcu_read_lock();
- list_for_each_entry_rcu(delegation, &clp->cl_delegations, super_list) {
- if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0)
- continue;
- inode = nfs_delegation_grab_inode(delegation);
- if (inode == NULL)
- continue;
- spin_lock(&clp->cl_lock);
- delegation = nfs_detach_delegation_locked(NFS_I(inode), NULL, clp);
- spin_unlock(&clp->cl_lock);
- rcu_read_unlock();
- if (delegation != NULL)
- nfs_free_delegation(delegation);
- iput(inode);
- goto restart;
+ list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
+ list_for_each_entry_rcu(delegation, &server->delegations,
+ super_list) {
+ if (test_bit(NFS_DELEGATION_NEED_RECLAIM,
+ &delegation->flags) == 0)
+ continue;
+ inode = nfs_delegation_grab_inode(delegation);
+ if (inode == NULL)
+ continue;
+ delegation = nfs_detach_delegation(NFS_I(inode),
+ server);
+ rcu_read_unlock();
+
+ if (delegation != NULL)
+ nfs_free_delegation(delegation);
+ iput(inode);
+ goto restart;
+ }
}
rcu_read_unlock();
}
+/**
+ * nfs_delegations_present - check for existence of delegations
+ * @clp: client state handle
+ *
+ * Returns one if there are any nfs_delegation structures attached
+ * to this nfs_client.
+ */
+int nfs_delegations_present(struct nfs_client *clp)
+{
+ struct nfs_server *server;
+ int ret = 0;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link)
+ if (!list_empty(&server->delegations)) {
+ ret = 1;
+ break;
+ }
+ rcu_read_unlock();
+ return ret;
+}
+
+/**
+ * nfs4_copy_delegation_stateid - Copy inode's state ID information
+ * @dst: stateid data structure to fill in
+ * @inode: inode to check
+ *
+ * Returns one and fills in "dst->data" * if inode had a delegation,
+ * otherwise zero is returned.
+ */
int nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode)
{
struct nfs_inode *nfsi = NFS_I(inode);
diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h
index 2026304bda1..d9322e490c5 100644
--- a/fs/nfs/delegation.h
+++ b/fs/nfs/delegation.h
@@ -44,6 +44,7 @@ void nfs_expire_all_delegation_types(struct nfs_client *clp, fmode_t flags);
void nfs_expire_unreferenced_delegations(struct nfs_client *clp);
void nfs_handle_cb_pathdown(struct nfs_client *clp);
int nfs_client_return_marked_delegations(struct nfs_client *clp);
+int nfs_delegations_present(struct nfs_client *clp);
void nfs_delegation_mark_reclaim(struct nfs_client *clp);
void nfs_delegation_reap_unclaimed(struct nfs_client *clp);
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index a0d8320bed9..df8c03a0216 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -33,8 +33,8 @@
#include <linux/namei.h>
#include <linux/mount.h>
#include <linux/sched.h>
-#include <linux/vmalloc.h>
#include <linux/kmemleak.h>
+#include <linux/xattr.h>
#include "delegation.h"
#include "iostat.h"
@@ -125,9 +125,10 @@ const struct inode_operations nfs4_dir_inode_operations = {
.permission = nfs_permission,
.getattr = nfs_getattr,
.setattr = nfs_setattr,
- .getxattr = nfs4_getxattr,
- .setxattr = nfs4_setxattr,
- .listxattr = nfs4_listxattr,
+ .getxattr = generic_getxattr,
+ .setxattr = generic_setxattr,
+ .listxattr = generic_listxattr,
+ .removexattr = generic_removexattr,
};
#endif /* CONFIG_NFS_V4 */
@@ -172,7 +173,7 @@ struct nfs_cache_array {
struct nfs_cache_array_entry array[0];
};
-typedef __be32 * (*decode_dirent_t)(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int);
+typedef int (*decode_dirent_t)(struct xdr_stream *, struct nfs_entry *, int);
typedef struct {
struct file *file;
struct page *page;
@@ -378,14 +379,14 @@ error:
return error;
}
-/* Fill in an entry based on the xdr code stored in desc->page */
-static
-int xdr_decode(nfs_readdir_descriptor_t *desc, struct nfs_entry *entry, struct xdr_stream *stream)
+static int xdr_decode(nfs_readdir_descriptor_t *desc,
+ struct nfs_entry *entry, struct xdr_stream *xdr)
{
- __be32 *p = desc->decode(stream, entry, NFS_SERVER(desc->file->f_path.dentry->d_inode), desc->plus);
- if (IS_ERR(p))
- return PTR_ERR(p);
+ int error;
+ error = desc->decode(xdr, entry, desc->plus);
+ if (error)
+ return error;
entry->fattr->time_start = desc->timestamp;
entry->fattr->gencount = desc->gencount;
return 0;
@@ -438,7 +439,6 @@ void nfs_prime_dcache(struct dentry *parent, struct nfs_entry *entry)
if (dentry == NULL)
return;
- d_set_d_op(dentry, NFS_PROTO(dir)->dentry_ops);
inode = nfs_fhget(dentry->d_sb, entry->fh, entry->fattr);
if (IS_ERR(inode))
goto out;
@@ -459,25 +459,26 @@ out:
/* Perform conversion from xdr to cache array */
static
int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *entry,
- void *xdr_page, struct page *page, unsigned int buflen)
+ struct page **xdr_pages, struct page *page, unsigned int buflen)
{
struct xdr_stream stream;
- struct xdr_buf buf;
- __be32 *ptr = xdr_page;
+ struct xdr_buf buf = {
+ .pages = xdr_pages,
+ .page_len = buflen,
+ .buflen = buflen,
+ .len = buflen,
+ };
+ struct page *scratch;
struct nfs_cache_array *array;
unsigned int count = 0;
int status;
- buf.head->iov_base = xdr_page;
- buf.head->iov_len = buflen;
- buf.tail->iov_len = 0;
- buf.page_base = 0;
- buf.page_len = 0;
- buf.buflen = buf.head->iov_len;
- buf.len = buf.head->iov_len;
-
- xdr_init_decode(&stream, &buf, ptr);
+ scratch = alloc_page(GFP_KERNEL);
+ if (scratch == NULL)
+ return -ENOMEM;
+ xdr_init_decode(&stream, &buf, NULL);
+ xdr_set_scratch_buffer(&stream, page_address(scratch), PAGE_SIZE);
do {
status = xdr_decode(desc, entry, &stream);
@@ -506,6 +507,8 @@ int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *en
} else
status = PTR_ERR(array);
}
+
+ put_page(scratch);
return status;
}
@@ -521,7 +524,6 @@ static
void nfs_readdir_free_large_page(void *ptr, struct page **pages,
unsigned int npages)
{
- vm_unmap_ram(ptr, npages);
nfs_readdir_free_pagearray(pages, npages);
}
@@ -530,9 +532,8 @@ void nfs_readdir_free_large_page(void *ptr, struct page **pages,
* to nfs_readdir_free_large_page
*/
static
-void *nfs_readdir_large_page(struct page **pages, unsigned int npages)
+int nfs_readdir_large_page(struct page **pages, unsigned int npages)
{
- void *ptr;
unsigned int i;
for (i = 0; i < npages; i++) {
@@ -541,13 +542,11 @@ void *nfs_readdir_large_page(struct page **pages, unsigned int npages)
goto out_freepages;
pages[i] = page;
}
+ return 0;
- ptr = vm_map_ram(pages, npages, 0, PAGE_KERNEL);
- if (!IS_ERR_OR_NULL(ptr))
- return ptr;
out_freepages:
nfs_readdir_free_pagearray(pages, i);
- return NULL;
+ return -ENOMEM;
}
static
@@ -566,6 +565,7 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
entry.eof = 0;
entry.fh = nfs_alloc_fhandle();
entry.fattr = nfs_alloc_fattr();
+ entry.server = NFS_SERVER(inode);
if (entry.fh == NULL || entry.fattr == NULL)
goto out;
@@ -577,8 +577,8 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
memset(array, 0, sizeof(struct nfs_cache_array));
array->eof_index = -1;
- pages_ptr = nfs_readdir_large_page(pages, array_size);
- if (!pages_ptr)
+ status = nfs_readdir_large_page(pages, array_size);
+ if (status < 0)
goto out_release_array;
do {
unsigned int pglen;
@@ -587,7 +587,7 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
if (status < 0)
break;
pglen = status;
- status = nfs_readdir_page_filler(desc, &entry, pages_ptr, page, pglen);
+ status = nfs_readdir_page_filler(desc, &entry, pages, page, pglen);
if (status < 0) {
if (status == -ENOSPC)
status = 0;
@@ -1192,8 +1192,6 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru
if (dentry->d_name.len > NFS_SERVER(dir)->namelen)
goto out;
- d_set_d_op(dentry, NFS_PROTO(dir)->dentry_ops);
-
/*
* If we're doing an exclusive create, optimize away the lookup
* but don't hash the dentry.
@@ -1221,7 +1219,7 @@ static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, stru
goto out_unblock_sillyrename;
}
inode = nfs_fhget(dentry->d_sb, fhandle, fattr);
- res = (struct dentry *)inode;
+ res = ERR_CAST(inode);
if (IS_ERR(res))
goto out_unblock_sillyrename;
@@ -1337,7 +1335,6 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
res = ERR_PTR(-ENAMETOOLONG);
goto out;
}
- d_set_d_op(dentry, NFS_PROTO(dir)->dentry_ops);
/* Let vfs_create() deal with O_EXCL. Instantiate, but don't hash
* the dentry. */
@@ -1355,8 +1352,7 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
attr.ia_valid = ATTR_MODE;
- if (!IS_POSIXACL(dir))
- attr.ia_mode &= ~current_umask();
+ attr.ia_mode &= ~current_umask();
} else {
open_flags &= ~(O_EXCL | O_CREAT);
attr.ia_valid = 0;
@@ -1587,6 +1583,7 @@ static int nfs_create(struct inode *dir, struct dentry *dentry, int mode,
{
struct iattr attr;
int error;
+ int open_flags = 0;
dfprintk(VFS, "NFS: create(%s/%ld), %s\n",
dir->i_sb->s_id, dir->i_ino, dentry->d_name.name);
@@ -1594,7 +1591,10 @@ static int nfs_create(struct inode *dir, struct dentry *dentry, int mode,
attr.ia_mode = mode;
attr.ia_valid = ATTR_MODE;
- error = NFS_PROTO(dir)->create(dir, dentry, &attr, 0, NULL);
+ if ((nd->flags & LOOKUP_CREATE) != 0)
+ open_flags = nd->intent.open.flags;
+
+ error = NFS_PROTO(dir)->create(dir, dentry, &attr, open_flags, NULL);
if (error != 0)
goto out_err;
return 0;
diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c
index 5596c6a2881..b5ffe8fa291 100644
--- a/fs/nfs/getroot.c
+++ b/fs/nfs/getroot.c
@@ -119,9 +119,6 @@ struct dentry *nfs_get_root(struct super_block *sb, struct nfs_fh *mntfh)
}
security_d_instantiate(ret, inode);
-
- if (ret->d_op == NULL)
- d_set_d_op(ret, server->nfs_client->rpc_ops->dentry_ops);
out:
nfs_free_fattr(fsinfo.fattr);
return ret;
@@ -227,9 +224,6 @@ struct dentry *nfs4_get_root(struct super_block *sb, struct nfs_fh *mntfh)
security_d_instantiate(ret, inode);
- if (ret->d_op == NULL)
- d_set_d_op(ret, server->nfs_client->rpc_ops->dentry_ops);
-
out:
nfs_free_fattr(fattr);
dprintk("<-- nfs4_get_root()\n");
diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c
index 4e2d9b6b138..18696882f1c 100644
--- a/fs/nfs/idmap.c
+++ b/fs/nfs/idmap.c
@@ -238,7 +238,7 @@ int nfs_map_gid_to_group(struct nfs_client *clp, __u32 gid, char *buf, size_t bu
return nfs_idmap_lookup_name(gid, "group", buf, buflen);
}
-#else /* CONFIG_NFS_USE_IDMAPPER not defined */
+#else /* CONFIG_NFS_USE_NEW_IDMAPPER not defined */
#include <linux/module.h>
#include <linux/mutex.h>
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 017daa3bed3..ce00b704452 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1410,9 +1410,9 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
*/
void nfs4_evict_inode(struct inode *inode)
{
+ pnfs_destroy_layout(NFS_I(inode));
truncate_inode_pages(&inode->i_data, 0);
end_writeback(inode);
- pnfs_destroy_layout(NFS_I(inode));
/* If we are holding a delegation, return it! */
nfs_inode_return_delegation_noreclaim(inode);
/* First call standard NFS clear_inode() code */
@@ -1619,6 +1619,7 @@ static void __exit exit_nfs_fs(void)
#ifdef CONFIG_PROC_FS
rpc_proc_unregister("nfs");
#endif
+ nfs_cleanup_cb_ident_idr();
unregister_nfs_fs();
nfs_fs_proc_exit();
nfsiod_stop();
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index e6356b750b7..bfa3a34af80 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -128,9 +128,13 @@ extern void nfs_umount(const struct nfs_mount_request *info);
/* client.c */
extern struct rpc_program nfs_program;
+extern void nfs_cleanup_cb_ident_idr(void);
extern void nfs_put_client(struct nfs_client *);
-extern struct nfs_client *nfs_find_client(const struct sockaddr *, u32);
-extern struct nfs_client *nfs_find_client_next(struct nfs_client *);
+extern struct nfs_client *nfs4_find_client_no_ident(const struct sockaddr *);
+extern struct nfs_client *nfs4_find_client_ident(int);
+extern struct nfs_client *
+nfs4_find_client_sessionid(const struct sockaddr *, struct nfs4_sessionid *,
+ int);
extern struct nfs_server *nfs_create_server(
const struct nfs_parsed_mount_data *,
struct nfs_fh *);
@@ -185,17 +189,20 @@ extern int __init nfs_init_directcache(void);
extern void nfs_destroy_directcache(void);
/* nfs2xdr.c */
-extern int nfs_stat_to_errno(int);
+extern int nfs_stat_to_errno(enum nfs_stat);
extern struct rpc_procinfo nfs_procedures[];
-extern __be32 *nfs_decode_dirent(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int);
+extern int nfs2_decode_dirent(struct xdr_stream *,
+ struct nfs_entry *, int);
/* nfs3xdr.c */
extern struct rpc_procinfo nfs3_procedures[];
-extern __be32 *nfs3_decode_dirent(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int);
+extern int nfs3_decode_dirent(struct xdr_stream *,
+ struct nfs_entry *, int);
/* nfs4xdr.c */
#ifdef CONFIG_NFS_V4
-extern __be32 *nfs4_decode_dirent(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int);
+extern int nfs4_decode_dirent(struct xdr_stream *,
+ struct nfs_entry *, int);
#endif
#ifdef CONFIG_NFS_V4_1
extern const u32 nfs41_maxread_overhead;
diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c
index 4f981f1f668..d4c2d6b7507 100644
--- a/fs/nfs/mount_clnt.c
+++ b/fs/nfs/mount_clnt.c
@@ -236,10 +236,8 @@ void nfs_umount(const struct nfs_mount_request *info)
.authflavor = RPC_AUTH_UNIX,
.flags = RPC_CLNT_CREATE_NOPING,
};
- struct mountres result;
struct rpc_message msg = {
.rpc_argp = info->dirpath,
- .rpc_resp = &result,
};
struct rpc_clnt *clnt;
int status;
@@ -248,7 +246,7 @@ void nfs_umount(const struct nfs_mount_request *info)
args.flags |= RPC_CLNT_CREATE_NONPRIVPORT;
clnt = rpc_create(&args);
- if (unlikely(IS_ERR(clnt)))
+ if (IS_ERR(clnt))
goto out_clnt_err;
dprintk("NFS: sending UMNT request for %s:%s\n",
@@ -280,29 +278,20 @@ out_call_err:
* XDR encode/decode functions for MOUNT
*/
-static int encode_mntdirpath(struct xdr_stream *xdr, const char *pathname)
+static void encode_mntdirpath(struct xdr_stream *xdr, const char *pathname)
{
const u32 pathname_len = strlen(pathname);
__be32 *p;
- if (unlikely(pathname_len > MNTPATHLEN))
- return -EIO;
-
- p = xdr_reserve_space(xdr, sizeof(u32) + pathname_len);
- if (unlikely(p == NULL))
- return -EIO;
+ BUG_ON(pathname_len > MNTPATHLEN);
+ p = xdr_reserve_space(xdr, 4 + pathname_len);
xdr_encode_opaque(p, pathname, pathname_len);
-
- return 0;
}
-static int mnt_enc_dirpath(struct rpc_rqst *req, __be32 *p,
- const char *dirpath)
+static void mnt_xdr_enc_dirpath(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const char *dirpath)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- return encode_mntdirpath(&xdr, dirpath);
+ encode_mntdirpath(xdr, dirpath);
}
/*
@@ -320,10 +309,10 @@ static int decode_status(struct xdr_stream *xdr, struct mountres *res)
u32 status;
__be32 *p;
- p = xdr_inline_decode(xdr, sizeof(status));
+ p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
return -EIO;
- status = ntohl(*p);
+ status = be32_to_cpup(p);
for (i = 0; i < ARRAY_SIZE(mnt_errtbl); i++) {
if (mnt_errtbl[i].status == status) {
@@ -351,18 +340,16 @@ static int decode_fhandle(struct xdr_stream *xdr, struct mountres *res)
return 0;
}
-static int mnt_dec_mountres(struct rpc_rqst *req, __be32 *p,
- struct mountres *res)
+static int mnt_xdr_dec_mountres(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct mountres *res)
{
- struct xdr_stream xdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
-
- status = decode_status(&xdr, res);
+ status = decode_status(xdr, res);
if (unlikely(status != 0 || res->errno != 0))
return status;
- return decode_fhandle(&xdr, res);
+ return decode_fhandle(xdr, res);
}
static int decode_fhs_status(struct xdr_stream *xdr, struct mountres *res)
@@ -371,10 +358,10 @@ static int decode_fhs_status(struct xdr_stream *xdr, struct mountres *res)
u32 status;
__be32 *p;
- p = xdr_inline_decode(xdr, sizeof(status));
+ p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
return -EIO;
- status = ntohl(*p);
+ status = be32_to_cpup(p);
for (i = 0; i < ARRAY_SIZE(mnt3_errtbl); i++) {
if (mnt3_errtbl[i].status == status) {
@@ -394,11 +381,11 @@ static int decode_fhandle3(struct xdr_stream *xdr, struct mountres *res)
u32 size;
__be32 *p;
- p = xdr_inline_decode(xdr, sizeof(size));
+ p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
return -EIO;
- size = ntohl(*p++);
+ size = be32_to_cpup(p);
if (size > NFS3_FHSIZE || size == 0)
return -EIO;
@@ -421,15 +408,15 @@ static int decode_auth_flavors(struct xdr_stream *xdr, struct mountres *res)
if (*count == 0)
return 0;
- p = xdr_inline_decode(xdr, sizeof(entries));
+ p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
return -EIO;
- entries = ntohl(*p);
+ entries = be32_to_cpup(p);
dprintk("NFS: received %u auth flavors\n", entries);
if (entries > NFS_MAX_SECFLAVORS)
entries = NFS_MAX_SECFLAVORS;
- p = xdr_inline_decode(xdr, sizeof(u32) * entries);
+ p = xdr_inline_decode(xdr, 4 * entries);
if (unlikely(p == NULL))
return -EIO;
@@ -437,7 +424,7 @@ static int decode_auth_flavors(struct xdr_stream *xdr, struct mountres *res)
entries = *count;
for (i = 0; i < entries; i++) {
- flavors[i] = ntohl(*p++);
+ flavors[i] = be32_to_cpup(p++);
dprintk("NFS: auth flavor[%u]: %d\n", i, flavors[i]);
}
*count = i;
@@ -445,30 +432,28 @@ static int decode_auth_flavors(struct xdr_stream *xdr, struct mountres *res)
return 0;
}
-static int mnt_dec_mountres3(struct rpc_rqst *req, __be32 *p,
- struct mountres *res)
+static int mnt_xdr_dec_mountres3(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct mountres *res)
{
- struct xdr_stream xdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
-
- status = decode_fhs_status(&xdr, res);
+ status = decode_fhs_status(xdr, res);
if (unlikely(status != 0 || res->errno != 0))
return status;
- status = decode_fhandle3(&xdr, res);
+ status = decode_fhandle3(xdr, res);
if (unlikely(status != 0)) {
res->errno = -EBADHANDLE;
return 0;
}
- return decode_auth_flavors(&xdr, res);
+ return decode_auth_flavors(xdr, res);
}
static struct rpc_procinfo mnt_procedures[] = {
[MOUNTPROC_MNT] = {
.p_proc = MOUNTPROC_MNT,
- .p_encode = (kxdrproc_t)mnt_enc_dirpath,
- .p_decode = (kxdrproc_t)mnt_dec_mountres,
+ .p_encode = (kxdreproc_t)mnt_xdr_enc_dirpath,
+ .p_decode = (kxdrdproc_t)mnt_xdr_dec_mountres,
.p_arglen = MNT_enc_dirpath_sz,
.p_replen = MNT_dec_mountres_sz,
.p_statidx = MOUNTPROC_MNT,
@@ -476,7 +461,7 @@ static struct rpc_procinfo mnt_procedures[] = {
},
[MOUNTPROC_UMNT] = {
.p_proc = MOUNTPROC_UMNT,
- .p_encode = (kxdrproc_t)mnt_enc_dirpath,
+ .p_encode = (kxdreproc_t)mnt_xdr_enc_dirpath,
.p_arglen = MNT_enc_dirpath_sz,
.p_statidx = MOUNTPROC_UMNT,
.p_name = "UMOUNT",
@@ -486,8 +471,8 @@ static struct rpc_procinfo mnt_procedures[] = {
static struct rpc_procinfo mnt3_procedures[] = {
[MOUNTPROC3_MNT] = {
.p_proc = MOUNTPROC3_MNT,
- .p_encode = (kxdrproc_t)mnt_enc_dirpath,
- .p_decode = (kxdrproc_t)mnt_dec_mountres3,
+ .p_encode = (kxdreproc_t)mnt_xdr_enc_dirpath,
+ .p_decode = (kxdrdproc_t)mnt_xdr_dec_mountres3,
.p_arglen = MNT_enc_dirpath_sz,
.p_replen = MNT_dec_mountres3_sz,
.p_statidx = MOUNTPROC3_MNT,
@@ -495,7 +480,7 @@ static struct rpc_procinfo mnt3_procedures[] = {
},
[MOUNTPROC3_UMNT] = {
.p_proc = MOUNTPROC3_UMNT,
- .p_encode = (kxdrproc_t)mnt_enc_dirpath,
+ .p_encode = (kxdreproc_t)mnt_xdr_enc_dirpath,
.p_arglen = MNT_enc_dirpath_sz,
.p_statidx = MOUNTPROC3_UMNT,
.p_name = "UMOUNT",
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index 5914a1911c9..792cb13a430 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -61,584 +61,1008 @@
#define NFS_readdirres_sz (1)
#define NFS_statfsres_sz (1+NFS_info_sz)
+
/*
- * Common NFS XDR functions as inlines
+ * While encoding arguments, set up the reply buffer in advance to
+ * receive reply data directly into the page cache.
*/
-static inline __be32 *
-xdr_encode_fhandle(__be32 *p, const struct nfs_fh *fhandle)
+static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages,
+ unsigned int base, unsigned int len,
+ unsigned int bufsize)
{
- memcpy(p, fhandle->data, NFS2_FHSIZE);
- return p + XDR_QUADLEN(NFS2_FHSIZE);
+ struct rpc_auth *auth = req->rq_cred->cr_auth;
+ unsigned int replen;
+
+ replen = RPC_REPHDRSIZE + auth->au_rslack + bufsize;
+ xdr_inline_pages(&req->rq_rcv_buf, replen << 2, pages, base, len);
}
-static inline __be32 *
-xdr_decode_fhandle(__be32 *p, struct nfs_fh *fhandle)
+/*
+ * Handle decode buffer overflows out-of-line.
+ */
+static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
{
- /* NFSv2 handles have a fixed length */
- fhandle->size = NFS2_FHSIZE;
- memcpy(fhandle->data, p, NFS2_FHSIZE);
- return p + XDR_QUADLEN(NFS2_FHSIZE);
+ dprintk("NFS: %s prematurely hit the end of our receive buffer. "
+ "Remaining buffer length is %tu words.\n",
+ func, xdr->end - xdr->p);
+}
+
+
+/*
+ * Encode/decode NFSv2 basic data types
+ *
+ * Basic NFSv2 data types are defined in section 2.3 of RFC 1094:
+ * "NFS: Network File System Protocol Specification".
+ *
+ * Not all basic data types have their own encoding and decoding
+ * functions. For run-time efficiency, some data types are encoded
+ * or decoded inline.
+ */
+
+/*
+ * typedef opaque nfsdata<>;
+ */
+static int decode_nfsdata(struct xdr_stream *xdr, struct nfs_readres *result)
+{
+ u32 recvd, count;
+ size_t hdrlen;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ count = be32_to_cpup(p);
+ hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
+ recvd = xdr->buf->len - hdrlen;
+ if (unlikely(count > recvd))
+ goto out_cheating;
+out:
+ xdr_read_pages(xdr, count);
+ result->eof = 0; /* NFSv2 does not pass EOF flag on the wire. */
+ result->count = count;
+ return count;
+out_cheating:
+ dprintk("NFS: server cheating in read result: "
+ "count %u > recvd %u\n", count, recvd);
+ count = recvd;
+ goto out;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * enum stat {
+ * NFS_OK = 0,
+ * NFSERR_PERM = 1,
+ * NFSERR_NOENT = 2,
+ * NFSERR_IO = 5,
+ * NFSERR_NXIO = 6,
+ * NFSERR_ACCES = 13,
+ * NFSERR_EXIST = 17,
+ * NFSERR_NODEV = 19,
+ * NFSERR_NOTDIR = 20,
+ * NFSERR_ISDIR = 21,
+ * NFSERR_FBIG = 27,
+ * NFSERR_NOSPC = 28,
+ * NFSERR_ROFS = 30,
+ * NFSERR_NAMETOOLONG = 63,
+ * NFSERR_NOTEMPTY = 66,
+ * NFSERR_DQUOT = 69,
+ * NFSERR_STALE = 70,
+ * NFSERR_WFLUSH = 99
+ * };
+ */
+static int decode_stat(struct xdr_stream *xdr, enum nfs_stat *status)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ *status = be32_to_cpup(p);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
}
-static inline __be32*
-xdr_encode_time(__be32 *p, struct timespec *timep)
+/*
+ * 2.3.2. ftype
+ *
+ * enum ftype {
+ * NFNON = 0,
+ * NFREG = 1,
+ * NFDIR = 2,
+ * NFBLK = 3,
+ * NFCHR = 4,
+ * NFLNK = 5
+ * };
+ *
+ */
+static __be32 *xdr_decode_ftype(__be32 *p, u32 *type)
{
- *p++ = htonl(timep->tv_sec);
- /* Convert nanoseconds into microseconds */
- *p++ = htonl(timep->tv_nsec ? timep->tv_nsec / 1000 : 0);
+ *type = be32_to_cpup(p++);
+ if (unlikely(*type > NF2FIFO))
+ *type = NFBAD;
return p;
}
-static inline __be32*
-xdr_encode_current_server_time(__be32 *p, struct timespec *timep)
+/*
+ * 2.3.3. fhandle
+ *
+ * typedef opaque fhandle[FHSIZE];
+ */
+static void encode_fhandle(struct xdr_stream *xdr, const struct nfs_fh *fh)
{
- /*
- * Passing the invalid value useconds=1000000 is a
- * Sun convention for "set to current server time".
- * It's needed to make permissions checks for the
- * "touch" program across v2 mounts to Solaris and
- * Irix boxes work correctly. See description of
- * sattr in section 6.1 of "NFS Illustrated" by
- * Brent Callaghan, Addison-Wesley, ISBN 0-201-32750-5
- */
- *p++ = htonl(timep->tv_sec);
- *p++ = htonl(1000000);
+ __be32 *p;
+
+ BUG_ON(fh->size != NFS2_FHSIZE);
+ p = xdr_reserve_space(xdr, NFS2_FHSIZE);
+ memcpy(p, fh->data, NFS2_FHSIZE);
+}
+
+static int decode_fhandle(struct xdr_stream *xdr, struct nfs_fh *fh)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, NFS2_FHSIZE);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ fh->size = NFS2_FHSIZE;
+ memcpy(fh->data, p, NFS2_FHSIZE);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * 2.3.4. timeval
+ *
+ * struct timeval {
+ * unsigned int seconds;
+ * unsigned int useconds;
+ * };
+ */
+static __be32 *xdr_encode_time(__be32 *p, const struct timespec *timep)
+{
+ *p++ = cpu_to_be32(timep->tv_sec);
+ if (timep->tv_nsec != 0)
+ *p++ = cpu_to_be32(timep->tv_nsec / NSEC_PER_USEC);
+ else
+ *p++ = cpu_to_be32(0);
return p;
}
-static inline __be32*
-xdr_decode_time(__be32 *p, struct timespec *timep)
+/*
+ * Passing the invalid value useconds=1000000 is a Sun convention for
+ * "set to current server time". It's needed to make permissions checks
+ * for the "touch" program across v2 mounts to Solaris and Irix servers
+ * work correctly. See description of sattr in section 6.1 of "NFS
+ * Illustrated" by Brent Callaghan, Addison-Wesley, ISBN 0-201-32750-5.
+ */
+static __be32 *xdr_encode_current_server_time(__be32 *p,
+ const struct timespec *timep)
{
- timep->tv_sec = ntohl(*p++);
- /* Convert microseconds into nanoseconds */
- timep->tv_nsec = ntohl(*p++) * 1000;
+ *p++ = cpu_to_be32(timep->tv_sec);
+ *p++ = cpu_to_be32(1000000);
return p;
}
-static __be32 *
-xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr)
+static __be32 *xdr_decode_time(__be32 *p, struct timespec *timep)
+{
+ timep->tv_sec = be32_to_cpup(p++);
+ timep->tv_nsec = be32_to_cpup(p++) * NSEC_PER_USEC;
+ return p;
+}
+
+/*
+ * 2.3.5. fattr
+ *
+ * struct fattr {
+ * ftype type;
+ * unsigned int mode;
+ * unsigned int nlink;
+ * unsigned int uid;
+ * unsigned int gid;
+ * unsigned int size;
+ * unsigned int blocksize;
+ * unsigned int rdev;
+ * unsigned int blocks;
+ * unsigned int fsid;
+ * unsigned int fileid;
+ * timeval atime;
+ * timeval mtime;
+ * timeval ctime;
+ * };
+ *
+ */
+static int decode_fattr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
{
u32 rdev, type;
- type = ntohl(*p++);
- fattr->mode = ntohl(*p++);
- fattr->nlink = ntohl(*p++);
- fattr->uid = ntohl(*p++);
- fattr->gid = ntohl(*p++);
- fattr->size = ntohl(*p++);
- fattr->du.nfs2.blocksize = ntohl(*p++);
- rdev = ntohl(*p++);
- fattr->du.nfs2.blocks = ntohl(*p++);
- fattr->fsid.major = ntohl(*p++);
- fattr->fsid.minor = 0;
- fattr->fileid = ntohl(*p++);
- p = xdr_decode_time(p, &fattr->atime);
- p = xdr_decode_time(p, &fattr->mtime);
- p = xdr_decode_time(p, &fattr->ctime);
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, NFS_fattr_sz << 2);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+
fattr->valid |= NFS_ATTR_FATTR_V2;
+
+ p = xdr_decode_ftype(p, &type);
+
+ fattr->mode = be32_to_cpup(p++);
+ fattr->nlink = be32_to_cpup(p++);
+ fattr->uid = be32_to_cpup(p++);
+ fattr->gid = be32_to_cpup(p++);
+ fattr->size = be32_to_cpup(p++);
+ fattr->du.nfs2.blocksize = be32_to_cpup(p++);
+
+ rdev = be32_to_cpup(p++);
fattr->rdev = new_decode_dev(rdev);
- if (type == NFCHR && rdev == NFS2_FIFO_DEV) {
+ if (type == (u32)NFCHR && rdev == (u32)NFS2_FIFO_DEV) {
fattr->mode = (fattr->mode & ~S_IFMT) | S_IFIFO;
fattr->rdev = 0;
}
+
+ fattr->du.nfs2.blocks = be32_to_cpup(p++);
+ fattr->fsid.major = be32_to_cpup(p++);
+ fattr->fsid.minor = 0;
+ fattr->fileid = be32_to_cpup(p++);
+
+ p = xdr_decode_time(p, &fattr->atime);
+ p = xdr_decode_time(p, &fattr->mtime);
+ xdr_decode_time(p, &fattr->ctime);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * 2.3.6. sattr
+ *
+ * struct sattr {
+ * unsigned int mode;
+ * unsigned int uid;
+ * unsigned int gid;
+ * unsigned int size;
+ * timeval atime;
+ * timeval mtime;
+ * };
+ */
+
+#define NFS2_SATTR_NOT_SET (0xffffffff)
+
+static __be32 *xdr_time_not_set(__be32 *p)
+{
+ *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
+ *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
return p;
}
-static inline __be32 *
-xdr_encode_sattr(__be32 *p, struct iattr *attr)
+static void encode_sattr(struct xdr_stream *xdr, const struct iattr *attr)
{
- const __be32 not_set = __constant_htonl(0xFFFFFFFF);
+ __be32 *p;
- *p++ = (attr->ia_valid & ATTR_MODE) ? htonl(attr->ia_mode) : not_set;
- *p++ = (attr->ia_valid & ATTR_UID) ? htonl(attr->ia_uid) : not_set;
- *p++ = (attr->ia_valid & ATTR_GID) ? htonl(attr->ia_gid) : not_set;
- *p++ = (attr->ia_valid & ATTR_SIZE) ? htonl(attr->ia_size) : not_set;
+ p = xdr_reserve_space(xdr, NFS_sattr_sz << 2);
- if (attr->ia_valid & ATTR_ATIME_SET) {
+ if (attr->ia_valid & ATTR_MODE)
+ *p++ = cpu_to_be32(attr->ia_mode);
+ else
+ *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
+ if (attr->ia_valid & ATTR_UID)
+ *p++ = cpu_to_be32(attr->ia_uid);
+ else
+ *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
+ if (attr->ia_valid & ATTR_GID)
+ *p++ = cpu_to_be32(attr->ia_gid);
+ else
+ *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
+ if (attr->ia_valid & ATTR_SIZE)
+ *p++ = cpu_to_be32((u32)attr->ia_size);
+ else
+ *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
+
+ if (attr->ia_valid & ATTR_ATIME_SET)
p = xdr_encode_time(p, &attr->ia_atime);
- } else if (attr->ia_valid & ATTR_ATIME) {
+ else if (attr->ia_valid & ATTR_ATIME)
p = xdr_encode_current_server_time(p, &attr->ia_atime);
- } else {
- *p++ = not_set;
- *p++ = not_set;
- }
-
- if (attr->ia_valid & ATTR_MTIME_SET) {
- p = xdr_encode_time(p, &attr->ia_mtime);
- } else if (attr->ia_valid & ATTR_MTIME) {
- p = xdr_encode_current_server_time(p, &attr->ia_mtime);
- } else {
- *p++ = not_set;
- *p++ = not_set;
- }
- return p;
+ else
+ p = xdr_time_not_set(p);
+ if (attr->ia_valid & ATTR_MTIME_SET)
+ xdr_encode_time(p, &attr->ia_mtime);
+ else if (attr->ia_valid & ATTR_MTIME)
+ xdr_encode_current_server_time(p, &attr->ia_mtime);
+ else
+ xdr_time_not_set(p);
}
/*
- * NFS encode functions
+ * 2.3.7. filename
+ *
+ * typedef string filename<MAXNAMLEN>;
*/
+static void encode_filename(struct xdr_stream *xdr,
+ const char *name, u32 length)
+{
+ __be32 *p;
+
+ BUG_ON(length > NFS2_MAXNAMLEN);
+ p = xdr_reserve_space(xdr, 4 + length);
+ xdr_encode_opaque(p, name, length);
+}
+
+static int decode_filename_inline(struct xdr_stream *xdr,
+ const char **name, u32 *length)
+{
+ __be32 *p;
+ u32 count;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ count = be32_to_cpup(p);
+ if (count > NFS3_MAXNAMLEN)
+ goto out_nametoolong;
+ p = xdr_inline_decode(xdr, count);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ *name = (const char *)p;
+ *length = count;
+ return 0;
+out_nametoolong:
+ dprintk("NFS: returned filename too long: %u\n", count);
+ return -ENAMETOOLONG;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
/*
- * Encode file handle argument
- * GETATTR, READLINK, STATFS
+ * 2.3.8. path
+ *
+ * typedef string path<MAXPATHLEN>;
*/
-static int
-nfs_xdr_fhandle(struct rpc_rqst *req, __be32 *p, struct nfs_fh *fh)
+static void encode_path(struct xdr_stream *xdr, struct page **pages, u32 length)
{
- p = xdr_encode_fhandle(p, fh);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+ __be32 *p;
+
+ BUG_ON(length > NFS2_MAXPATHLEN);
+ p = xdr_reserve_space(xdr, 4);
+ *p = cpu_to_be32(length);
+ xdr_write_pages(xdr, pages, 0, length);
+}
+
+static int decode_path(struct xdr_stream *xdr)
+{
+ u32 length, recvd;
+ size_t hdrlen;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ length = be32_to_cpup(p);
+ if (unlikely(length >= xdr->buf->page_len || length > NFS_MAXPATHLEN))
+ goto out_size;
+ hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
+ recvd = xdr->buf->len - hdrlen;
+ if (unlikely(length > recvd))
+ goto out_cheating;
+
+ xdr_read_pages(xdr, length);
+ xdr_terminate_string(xdr->buf, length);
return 0;
+out_size:
+ dprintk("NFS: returned pathname too long: %u\n", length);
+ return -ENAMETOOLONG;
+out_cheating:
+ dprintk("NFS: server cheating in pathname result: "
+ "length %u > received %u\n", length, recvd);
+ return -EIO;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
}
/*
- * Encode SETATTR arguments
+ * 2.3.9. attrstat
+ *
+ * union attrstat switch (stat status) {
+ * case NFS_OK:
+ * fattr attributes;
+ * default:
+ * void;
+ * };
*/
-static int
-nfs_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs_sattrargs *args)
+static int decode_attrstat(struct xdr_stream *xdr, struct nfs_fattr *result)
{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_sattr(p, args->sattr);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
+ enum nfs_stat status;
+ int error;
+
+ error = decode_stat(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS_OK)
+ goto out_default;
+ error = decode_fattr(xdr, result);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
}
/*
- * Encode directory ops argument
- * LOOKUP, RMDIR
+ * 2.3.10. diropargs
+ *
+ * struct diropargs {
+ * fhandle dir;
+ * filename name;
+ * };
*/
-static int
-nfs_xdr_diropargs(struct rpc_rqst *req, __be32 *p, struct nfs_diropargs *args)
+static void encode_diropargs(struct xdr_stream *xdr, const struct nfs_fh *fh,
+ const char *name, u32 length)
{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name, args->len);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
+ encode_fhandle(xdr, fh);
+ encode_filename(xdr, name, length);
}
/*
- * Encode REMOVE argument
+ * 2.3.11. diropres
+ *
+ * union diropres switch (stat status) {
+ * case NFS_OK:
+ * struct {
+ * fhandle file;
+ * fattr attributes;
+ * } diropok;
+ * default:
+ * void;
+ * };
*/
-static int
-nfs_xdr_removeargs(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
+static int decode_diropok(struct xdr_stream *xdr, struct nfs_diropok *result)
{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name.name, args->name.len);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
+ int error;
+
+ error = decode_fhandle(xdr, result->fh);
+ if (unlikely(error))
+ goto out;
+ error = decode_fattr(xdr, result->fattr);
+out:
+ return error;
+}
+
+static int decode_diropres(struct xdr_stream *xdr, struct nfs_diropok *result)
+{
+ enum nfs_stat status;
+ int error;
+
+ error = decode_stat(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS_OK)
+ goto out_default;
+ error = decode_diropok(xdr, result);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
}
+
/*
- * Arguments to a READ call. Since we read data directly into the page
- * cache, we also set up the reply iovec here so that iov[1] points
- * exactly to the page we want to fetch.
+ * NFSv2 XDR encode functions
+ *
+ * NFSv2 argument types are defined in section 2.2 of RFC 1094:
+ * "NFS: Network File System Protocol Specification".
*/
-static int
-nfs_xdr_readargs(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
+
+static void nfs2_xdr_enc_fhandle(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_fh *fh)
{
- struct rpc_auth *auth = req->rq_cred->cr_auth;
- unsigned int replen;
- u32 offset = (u32)args->offset;
+ encode_fhandle(xdr, fh);
+}
+
+/*
+ * 2.2.3. sattrargs
+ *
+ * struct sattrargs {
+ * fhandle file;
+ * sattr attributes;
+ * };
+ */
+static void nfs2_xdr_enc_sattrargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_sattrargs *args)
+{
+ encode_fhandle(xdr, args->fh);
+ encode_sattr(xdr, args->sattr);
+}
+
+static void nfs2_xdr_enc_diropargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_diropargs *args)
+{
+ encode_diropargs(xdr, args->fh, args->name, args->len);
+}
+
+static void nfs2_xdr_enc_readlinkargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_readlinkargs *args)
+{
+ encode_fhandle(xdr, args->fh);
+ prepare_reply_buffer(req, args->pages, args->pgbase,
+ args->pglen, NFS_readlinkres_sz);
+}
+
+/*
+ * 2.2.7. readargs
+ *
+ * struct readargs {
+ * fhandle file;
+ * unsigned offset;
+ * unsigned count;
+ * unsigned totalcount;
+ * };
+ */
+static void encode_readargs(struct xdr_stream *xdr,
+ const struct nfs_readargs *args)
+{
+ u32 offset = args->offset;
u32 count = args->count;
+ __be32 *p;
- p = xdr_encode_fhandle(p, args->fh);
- *p++ = htonl(offset);
- *p++ = htonl(count);
- *p++ = htonl(count);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+ encode_fhandle(xdr, args->fh);
- /* Inline the page array */
- replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen,
- args->pages, args->pgbase, count);
+ p = xdr_reserve_space(xdr, 4 + 4 + 4);
+ *p++ = cpu_to_be32(offset);
+ *p++ = cpu_to_be32(count);
+ *p = cpu_to_be32(count);
+}
+
+static void nfs2_xdr_enc_readargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_readargs *args)
+{
+ encode_readargs(xdr, args);
+ prepare_reply_buffer(req, args->pages, args->pgbase,
+ args->count, NFS_readres_sz);
req->rq_rcv_buf.flags |= XDRBUF_READ;
- return 0;
}
/*
- * Decode READ reply
+ * 2.2.9. writeargs
+ *
+ * struct writeargs {
+ * fhandle file;
+ * unsigned beginoffset;
+ * unsigned offset;
+ * unsigned totalcount;
+ * nfsdata data;
+ * };
*/
-static int
-nfs_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
+static void encode_writeargs(struct xdr_stream *xdr,
+ const struct nfs_writeargs *args)
{
- struct kvec *iov = req->rq_rcv_buf.head;
- size_t hdrlen;
- u32 count, recvd;
- int status;
-
- if ((status = ntohl(*p++)))
- return nfs_stat_to_errno(status);
- p = xdr_decode_fattr(p, res->fattr);
-
- count = ntohl(*p++);
- res->eof = 0;
- hdrlen = (u8 *) p - (u8 *) iov->iov_base;
- if (iov->iov_len < hdrlen) {
- dprintk("NFS: READ reply header overflowed:"
- "length %Zu > %Zu\n", hdrlen, iov->iov_len);
- return -errno_NFSERR_IO;
- } else if (iov->iov_len != hdrlen) {
- dprintk("NFS: READ header is short. iovec will be shifted.\n");
- xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen);
- }
+ u32 offset = args->offset;
+ u32 count = args->count;
+ __be32 *p;
- recvd = req->rq_rcv_buf.len - hdrlen;
- if (count > recvd) {
- dprintk("NFS: server cheating in read reply: "
- "count %u > recvd %u\n", count, recvd);
- count = recvd;
- }
+ encode_fhandle(xdr, args->fh);
- dprintk("RPC: readres OK count %u\n", count);
- if (count < res->count)
- res->count = count;
+ p = xdr_reserve_space(xdr, 4 + 4 + 4 + 4);
+ *p++ = cpu_to_be32(offset);
+ *p++ = cpu_to_be32(offset);
+ *p++ = cpu_to_be32(count);
- return count;
+ /* nfsdata */
+ *p = cpu_to_be32(count);
+ xdr_write_pages(xdr, args->pages, args->pgbase, count);
}
+static void nfs2_xdr_enc_writeargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_writeargs *args)
+{
+ encode_writeargs(xdr, args);
+ xdr->buf->flags |= XDRBUF_WRITE;
+}
/*
- * Write arguments. Splice the buffer to be written into the iovec.
+ * 2.2.10. createargs
+ *
+ * struct createargs {
+ * diropargs where;
+ * sattr attributes;
+ * };
*/
-static int
-nfs_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
+static void nfs2_xdr_enc_createargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_createargs *args)
{
- struct xdr_buf *sndbuf = &req->rq_snd_buf;
- u32 offset = (u32)args->offset;
- u32 count = args->count;
-
- p = xdr_encode_fhandle(p, args->fh);
- *p++ = htonl(offset);
- *p++ = htonl(offset);
- *p++ = htonl(count);
- *p++ = htonl(count);
- sndbuf->len = xdr_adjust_iovec(sndbuf->head, p);
+ encode_diropargs(xdr, args->fh, args->name, args->len);
+ encode_sattr(xdr, args->sattr);
+}
- /* Copy the page array */
- xdr_encode_pages(sndbuf, args->pages, args->pgbase, count);
- sndbuf->flags |= XDRBUF_WRITE;
- return 0;
+static void nfs2_xdr_enc_removeargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_removeargs *args)
+{
+ encode_diropargs(xdr, args->fh, args->name.name, args->name.len);
}
/*
- * Encode create arguments
- * CREATE, MKDIR
+ * 2.2.12. renameargs
+ *
+ * struct renameargs {
+ * diropargs from;
+ * diropargs to;
+ * };
*/
-static int
-nfs_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs_createargs *args)
+static void nfs2_xdr_enc_renameargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_renameargs *args)
{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name, args->len);
- p = xdr_encode_sattr(p, args->sattr);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
+ const struct qstr *old = args->old_name;
+ const struct qstr *new = args->new_name;
+
+ encode_diropargs(xdr, args->old_dir, old->name, old->len);
+ encode_diropargs(xdr, args->new_dir, new->name, new->len);
}
/*
- * Encode RENAME arguments
+ * 2.2.13. linkargs
+ *
+ * struct linkargs {
+ * fhandle from;
+ * diropargs to;
+ * };
*/
-static int
-nfs_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs_renameargs *args)
+static void nfs2_xdr_enc_linkargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_linkargs *args)
{
- p = xdr_encode_fhandle(p, args->old_dir);
- p = xdr_encode_array(p, args->old_name->name, args->old_name->len);
- p = xdr_encode_fhandle(p, args->new_dir);
- p = xdr_encode_array(p, args->new_name->name, args->new_name->len);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
+ encode_fhandle(xdr, args->fromfh);
+ encode_diropargs(xdr, args->tofh, args->toname, args->tolen);
}
/*
- * Encode LINK arguments
+ * 2.2.14. symlinkargs
+ *
+ * struct symlinkargs {
+ * diropargs from;
+ * path to;
+ * sattr attributes;
+ * };
*/
-static int
-nfs_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs_linkargs *args)
+static void nfs2_xdr_enc_symlinkargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_symlinkargs *args)
{
- p = xdr_encode_fhandle(p, args->fromfh);
- p = xdr_encode_fhandle(p, args->tofh);
- p = xdr_encode_array(p, args->toname, args->tolen);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
+ encode_diropargs(xdr, args->fromfh, args->fromname, args->fromlen);
+ encode_path(xdr, args->pages, args->pathlen);
+ encode_sattr(xdr, args->sattr);
}
/*
- * Encode SYMLINK arguments
+ * 2.2.17. readdirargs
+ *
+ * struct readdirargs {
+ * fhandle dir;
+ * nfscookie cookie;
+ * unsigned count;
+ * };
*/
-static int
-nfs_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs_symlinkargs *args)
+static void encode_readdirargs(struct xdr_stream *xdr,
+ const struct nfs_readdirargs *args)
{
- struct xdr_buf *sndbuf = &req->rq_snd_buf;
- size_t pad;
+ __be32 *p;
- p = xdr_encode_fhandle(p, args->fromfh);
- p = xdr_encode_array(p, args->fromname, args->fromlen);
- *p++ = htonl(args->pathlen);
- sndbuf->len = xdr_adjust_iovec(sndbuf->head, p);
+ encode_fhandle(xdr, args->fh);
- xdr_encode_pages(sndbuf, args->pages, 0, args->pathlen);
+ p = xdr_reserve_space(xdr, 4 + 4);
+ *p++ = cpu_to_be32(args->cookie);
+ *p = cpu_to_be32(args->count);
+}
- /*
- * xdr_encode_pages may have added a few bytes to ensure the
- * pathname ends on a 4-byte boundary. Start encoding the
- * attributes after the pad bytes.
- */
- pad = sndbuf->tail->iov_len;
- if (pad > 0)
- p++;
- p = xdr_encode_sattr(p, args->sattr);
- sndbuf->len += xdr_adjust_iovec(sndbuf->tail, p) - pad;
- return 0;
+static void nfs2_xdr_enc_readdirargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_readdirargs *args)
+{
+ encode_readdirargs(xdr, args);
+ prepare_reply_buffer(req, args->pages, 0,
+ args->count, NFS_readdirres_sz);
}
/*
- * Encode arguments to readdir call
+ * NFSv2 XDR decode functions
+ *
+ * NFSv2 result types are defined in section 2.2 of RFC 1094:
+ * "NFS: Network File System Protocol Specification".
*/
-static int
-nfs_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs_readdirargs *args)
+
+static int nfs2_xdr_dec_stat(struct rpc_rqst *req, struct xdr_stream *xdr,
+ void *__unused)
{
- struct rpc_auth *auth = req->rq_cred->cr_auth;
- unsigned int replen;
- u32 count = args->count;
+ enum nfs_stat status;
+ int error;
+
+ error = decode_stat(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS_OK)
+ goto out_default;
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
+}
- p = xdr_encode_fhandle(p, args->fh);
- *p++ = htonl(args->cookie);
- *p++ = htonl(count); /* see above */
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+static int nfs2_xdr_dec_attrstat(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_fattr *result)
+{
+ return decode_attrstat(xdr, result);
+}
- /* Inline the page array */
- replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readdirres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count);
- return 0;
+static int nfs2_xdr_dec_diropres(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_diropok *result)
+{
+ return decode_diropres(xdr, result);
}
/*
- * Decode the result of a readdir call.
- * We're not really decoding anymore, we just leave the buffer untouched
- * and only check that it is syntactically correct.
- * The real decoding happens in nfs_decode_entry below, called directly
- * from nfs_readdir for each entry.
+ * 2.2.6. readlinkres
+ *
+ * union readlinkres switch (stat status) {
+ * case NFS_OK:
+ * path data;
+ * default:
+ * void;
+ * };
*/
-static int
-nfs_xdr_readdirres(struct rpc_rqst *req, __be32 *p, void *dummy)
+static int nfs2_xdr_dec_readlinkres(struct rpc_rqst *req,
+ struct xdr_stream *xdr, void *__unused)
{
- struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
- struct kvec *iov = rcvbuf->head;
- struct page **page;
- size_t hdrlen;
- unsigned int pglen, recvd;
- int status;
-
- if ((status = ntohl(*p++)))
- return nfs_stat_to_errno(status);
-
- hdrlen = (u8 *) p - (u8 *) iov->iov_base;
- if (iov->iov_len < hdrlen) {
- dprintk("NFS: READDIR reply header overflowed:"
- "length %Zu > %Zu\n", hdrlen, iov->iov_len);
- return -errno_NFSERR_IO;
- } else if (iov->iov_len != hdrlen) {
- dprintk("NFS: READDIR header is short. iovec will be shifted.\n");
- xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen);
- }
+ enum nfs_stat status;
+ int error;
+
+ error = decode_stat(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS_OK)
+ goto out_default;
+ error = decode_path(xdr);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
+}
- pglen = rcvbuf->page_len;
- recvd = rcvbuf->len - hdrlen;
- if (pglen > recvd)
- pglen = recvd;
- page = rcvbuf->pages;
- return pglen;
+/*
+ * 2.2.7. readres
+ *
+ * union readres switch (stat status) {
+ * case NFS_OK:
+ * fattr attributes;
+ * nfsdata data;
+ * default:
+ * void;
+ * };
+ */
+static int nfs2_xdr_dec_readres(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_readres *result)
+{
+ enum nfs_stat status;
+ int error;
+
+ error = decode_stat(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS_OK)
+ goto out_default;
+ error = decode_fattr(xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ error = decode_nfsdata(xdr, result);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
}
-static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
+static int nfs2_xdr_dec_writeres(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_writeres *result)
{
- dprintk("nfs: %s: prematurely hit end of receive buffer. "
- "Remaining buffer length is %tu words.\n",
- func, xdr->end - xdr->p);
+ /* All NFSv2 writes are "file sync" writes */
+ result->verf->committed = NFS_FILE_SYNC;
+ return decode_attrstat(xdr, result->fattr);
}
-__be32 *
-nfs_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_server *server, int plus)
+/**
+ * nfs2_decode_dirent - Decode a single NFSv2 directory entry stored in
+ * the local page cache.
+ * @xdr: XDR stream where entry resides
+ * @entry: buffer to fill in with entry data
+ * @plus: boolean indicating whether this should be a readdirplus entry
+ *
+ * Returns zero if successful, otherwise a negative errno value is
+ * returned.
+ *
+ * This function is not invoked during READDIR reply decoding, but
+ * rather whenever an application invokes the getdents(2) system call
+ * on a directory already in our cache.
+ *
+ * 2.2.17. entry
+ *
+ * struct entry {
+ * unsigned fileid;
+ * filename name;
+ * nfscookie cookie;
+ * entry *nextentry;
+ * };
+ */
+int nfs2_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
+ int plus)
{
__be32 *p;
+ int error;
+
p = xdr_inline_decode(xdr, 4);
- if (unlikely(!p))
+ if (unlikely(p == NULL))
goto out_overflow;
- if (!ntohl(*p++)) {
+ if (*p++ == xdr_zero) {
p = xdr_inline_decode(xdr, 4);
- if (unlikely(!p))
+ if (unlikely(p == NULL))
goto out_overflow;
- if (!ntohl(*p++))
- return ERR_PTR(-EAGAIN);
+ if (*p++ == xdr_zero)
+ return -EAGAIN;
entry->eof = 1;
- return ERR_PTR(-EBADCOOKIE);
+ return -EBADCOOKIE;
}
- p = xdr_inline_decode(xdr, 8);
- if (unlikely(!p))
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
goto out_overflow;
+ entry->ino = be32_to_cpup(p);
- entry->ino = ntohl(*p++);
- entry->len = ntohl(*p++);
+ error = decode_filename_inline(xdr, &entry->name, &entry->len);
+ if (unlikely(error))
+ return error;
- p = xdr_inline_decode(xdr, entry->len + 4);
- if (unlikely(!p))
+ /*
+ * The type (size and byte order) of nfscookie isn't defined in
+ * RFC 1094. This implementation assumes that it's an XDR uint32.
+ */
+ entry->prev_cookie = entry->cookie;
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
goto out_overflow;
- entry->name = (const char *) p;
- p += XDR_QUADLEN(entry->len);
- entry->prev_cookie = entry->cookie;
- entry->cookie = ntohl(*p++);
+ entry->cookie = be32_to_cpup(p);
entry->d_type = DT_UNKNOWN;
- p = xdr_inline_peek(xdr, 8);
- if (p != NULL)
- entry->eof = !p[0] && p[1];
- else
- entry->eof = 0;
-
- return p;
+ return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
- return ERR_PTR(-EAGAIN);
-}
-
-/*
- * NFS XDR decode functions
- */
-/*
- * Decode simple status reply
- */
-static int
-nfs_xdr_stat(struct rpc_rqst *req, __be32 *p, void *dummy)
-{
- int status;
-
- if ((status = ntohl(*p++)) != 0)
- status = nfs_stat_to_errno(status);
- return status;
+ return -EAGAIN;
}
/*
- * Decode attrstat reply
- * GETATTR, SETATTR, WRITE
- */
-static int
-nfs_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
-{
- int status;
-
- if ((status = ntohl(*p++)))
- return nfs_stat_to_errno(status);
- xdr_decode_fattr(p, fattr);
- return 0;
-}
-
-/*
- * Decode diropres reply
- * LOOKUP, CREATE, MKDIR
+ * 2.2.17. readdirres
+ *
+ * union readdirres switch (stat status) {
+ * case NFS_OK:
+ * struct {
+ * entry *entries;
+ * bool eof;
+ * } readdirok;
+ * default:
+ * void;
+ * };
+ *
+ * Read the directory contents into the page cache, but don't
+ * touch them. The actual decoding is done by nfs2_decode_dirent()
+ * during subsequent nfs_readdir() calls.
*/
-static int
-nfs_xdr_diropres(struct rpc_rqst *req, __be32 *p, struct nfs_diropok *res)
+static int decode_readdirok(struct xdr_stream *xdr)
{
- int status;
+ u32 recvd, pglen;
+ size_t hdrlen;
- if ((status = ntohl(*p++)))
- return nfs_stat_to_errno(status);
- p = xdr_decode_fhandle(p, res->fh);
- xdr_decode_fattr(p, res->fattr);
- return 0;
+ pglen = xdr->buf->page_len;
+ hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
+ recvd = xdr->buf->len - hdrlen;
+ if (unlikely(pglen > recvd))
+ goto out_cheating;
+out:
+ xdr_read_pages(xdr, pglen);
+ return pglen;
+out_cheating:
+ dprintk("NFS: server cheating in readdir result: "
+ "pglen %u > recvd %u\n", pglen, recvd);
+ pglen = recvd;
+ goto out;
}
-/*
- * Encode READLINK args
- */
-static int
-nfs_xdr_readlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs_readlinkargs *args)
+static int nfs2_xdr_dec_readdirres(struct rpc_rqst *req,
+ struct xdr_stream *xdr, void *__unused)
{
- struct rpc_auth *auth = req->rq_cred->cr_auth;
- unsigned int replen;
-
- p = xdr_encode_fhandle(p, args->fh);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
-
- /* Inline the page array */
- replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readlinkres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen);
- return 0;
+ enum nfs_stat status;
+ int error;
+
+ error = decode_stat(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS_OK)
+ goto out_default;
+ error = decode_readdirok(xdr);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
}
/*
- * Decode READLINK reply
+ * 2.2.18. statfsres
+ *
+ * union statfsres (stat status) {
+ * case NFS_OK:
+ * struct {
+ * unsigned tsize;
+ * unsigned bsize;
+ * unsigned blocks;
+ * unsigned bfree;
+ * unsigned bavail;
+ * } info;
+ * default:
+ * void;
+ * };
*/
-static int
-nfs_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, void *dummy)
+static int decode_info(struct xdr_stream *xdr, struct nfs2_fsstat *result)
{
- struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
- struct kvec *iov = rcvbuf->head;
- size_t hdrlen;
- u32 len, recvd;
- int status;
-
- if ((status = ntohl(*p++)))
- return nfs_stat_to_errno(status);
- /* Convert length of symlink */
- len = ntohl(*p++);
- if (len >= rcvbuf->page_len) {
- dprintk("nfs: server returned giant symlink!\n");
- return -ENAMETOOLONG;
- }
- hdrlen = (u8 *) p - (u8 *) iov->iov_base;
- if (iov->iov_len < hdrlen) {
- dprintk("NFS: READLINK reply header overflowed:"
- "length %Zu > %Zu\n", hdrlen, iov->iov_len);
- return -errno_NFSERR_IO;
- } else if (iov->iov_len != hdrlen) {
- dprintk("NFS: READLINK header is short. iovec will be shifted.\n");
- xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen);
- }
- recvd = req->rq_rcv_buf.len - hdrlen;
- if (recvd < len) {
- dprintk("NFS: server cheating in readlink reply: "
- "count %u > recvd %u\n", len, recvd);
- return -EIO;
- }
+ __be32 *p;
- xdr_terminate_string(rcvbuf, len);
+ p = xdr_inline_decode(xdr, NFS_info_sz << 2);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ result->tsize = be32_to_cpup(p++);
+ result->bsize = be32_to_cpup(p++);
+ result->blocks = be32_to_cpup(p++);
+ result->bfree = be32_to_cpup(p++);
+ result->bavail = be32_to_cpup(p);
return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
}
-/*
- * Decode WRITE reply
- */
-static int
-nfs_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res)
+static int nfs2_xdr_dec_statfsres(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs2_fsstat *result)
{
- res->verf->committed = NFS_FILE_SYNC;
- return nfs_xdr_attrstat(req, p, res->fattr);
+ enum nfs_stat status;
+ int error;
+
+ error = decode_stat(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS_OK)
+ goto out_default;
+ error = decode_info(xdr, result);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
}
-/*
- * Decode STATFS reply
- */
-static int
-nfs_xdr_statfsres(struct rpc_rqst *req, __be32 *p, struct nfs2_fsstat *res)
-{
- int status;
-
- if ((status = ntohl(*p++)))
- return nfs_stat_to_errno(status);
-
- res->tsize = ntohl(*p++);
- res->bsize = ntohl(*p++);
- res->blocks = ntohl(*p++);
- res->bfree = ntohl(*p++);
- res->bavail = ntohl(*p++);
- return 0;
-}
/*
* We need to translate between nfs status return values and
* the local errno values which may not be the same.
*/
-static struct {
+static const struct {
int stat;
int errno;
} nfs_errtbl[] = {
@@ -678,28 +1102,30 @@ static struct {
{ -1, -EIO }
};
-/*
- * Convert an NFS error code to a local one.
- * This one is used jointly by NFSv2 and NFSv3.
+/**
+ * nfs_stat_to_errno - convert an NFS status code to a local errno
+ * @status: NFS status code to convert
+ *
+ * Returns a local errno value, or -EIO if the NFS status code is
+ * not recognized. This function is used jointly by NFSv2 and NFSv3.
*/
-int
-nfs_stat_to_errno(int stat)
+int nfs_stat_to_errno(enum nfs_stat status)
{
int i;
for (i = 0; nfs_errtbl[i].stat != -1; i++) {
- if (nfs_errtbl[i].stat == stat)
+ if (nfs_errtbl[i].stat == (int)status)
return nfs_errtbl[i].errno;
}
- dprintk("nfs_stat_to_errno: bad nfs status return value: %d\n", stat);
+ dprintk("NFS: Unrecognized nfs status value: %u\n", status);
return nfs_errtbl[i].errno;
}
#define PROC(proc, argtype, restype, timer) \
[NFSPROC_##proc] = { \
.p_proc = NFSPROC_##proc, \
- .p_encode = (kxdrproc_t) nfs_xdr_##argtype, \
- .p_decode = (kxdrproc_t) nfs_xdr_##restype, \
+ .p_encode = (kxdreproc_t)nfs2_xdr_enc_##argtype, \
+ .p_decode = (kxdrdproc_t)nfs2_xdr_dec_##restype, \
.p_arglen = NFS_##argtype##_sz, \
.p_replen = NFS_##restype##_sz, \
.p_timer = timer, \
@@ -707,21 +1133,21 @@ nfs_stat_to_errno(int stat)
.p_name = #proc, \
}
struct rpc_procinfo nfs_procedures[] = {
- PROC(GETATTR, fhandle, attrstat, 1),
- PROC(SETATTR, sattrargs, attrstat, 0),
- PROC(LOOKUP, diropargs, diropres, 2),
- PROC(READLINK, readlinkargs, readlinkres, 3),
- PROC(READ, readargs, readres, 3),
- PROC(WRITE, writeargs, writeres, 4),
- PROC(CREATE, createargs, diropres, 0),
- PROC(REMOVE, removeargs, stat, 0),
- PROC(RENAME, renameargs, stat, 0),
- PROC(LINK, linkargs, stat, 0),
- PROC(SYMLINK, symlinkargs, stat, 0),
- PROC(MKDIR, createargs, diropres, 0),
- PROC(RMDIR, diropargs, stat, 0),
- PROC(READDIR, readdirargs, readdirres, 3),
- PROC(STATFS, fhandle, statfsres, 0),
+ PROC(GETATTR, fhandle, attrstat, 1),
+ PROC(SETATTR, sattrargs, attrstat, 0),
+ PROC(LOOKUP, diropargs, diropres, 2),
+ PROC(READLINK, readlinkargs, readlinkres, 3),
+ PROC(READ, readargs, readres, 3),
+ PROC(WRITE, writeargs, writeres, 4),
+ PROC(CREATE, createargs, diropres, 0),
+ PROC(REMOVE, removeargs, stat, 0),
+ PROC(RENAME, renameargs, stat, 0),
+ PROC(LINK, linkargs, stat, 0),
+ PROC(SYMLINK, symlinkargs, stat, 0),
+ PROC(MKDIR, createargs, diropres, 0),
+ PROC(RMDIR, diropargs, stat, 0),
+ PROC(READDIR, readdirargs, readdirres, 3),
+ PROC(STATFS, fhandle, statfsres, 0),
};
struct rpc_version nfs_version2 = {
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index f6cc60f06da..01c5e8b1941 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -37,18 +37,16 @@
#define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2))
#define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2))
#define NFS3_fattr_sz (21)
-#define NFS3_wcc_attr_sz (6)
+#define NFS3_cookieverf_sz (NFS3_COOKIEVERFSIZE>>2)
+#define NFS3_wcc_attr_sz (6)
#define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz)
#define NFS3_post_op_attr_sz (1+NFS3_fattr_sz)
-#define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz)
-#define NFS3_fsstat_sz
-#define NFS3_fsinfo_sz
-#define NFS3_pathconf_sz
-#define NFS3_entry_sz (NFS3_filename_sz+3)
-
-#define NFS3_sattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3)
+#define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz)
#define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz)
-#define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz)
+
+#define NFS3_getattrargs_sz (NFS3_fh_sz)
+#define NFS3_setattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3)
+#define NFS3_lookupargs_sz (NFS3_fh_sz+NFS3_filename_sz)
#define NFS3_accessargs_sz (NFS3_fh_sz+1)
#define NFS3_readlinkargs_sz (NFS3_fh_sz)
#define NFS3_readargs_sz (NFS3_fh_sz+3)
@@ -57,14 +55,16 @@
#define NFS3_mkdirargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz)
#define NFS3_symlinkargs_sz (NFS3_diropargs_sz+1+NFS3_sattr_sz)
#define NFS3_mknodargs_sz (NFS3_diropargs_sz+2+NFS3_sattr_sz)
+#define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz)
#define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz)
#define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz)
-#define NFS3_readdirargs_sz (NFS3_fh_sz+2)
+#define NFS3_readdirargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+3)
+#define NFS3_readdirplusargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+4)
#define NFS3_commitargs_sz (NFS3_fh_sz+3)
-#define NFS3_attrstat_sz (1+NFS3_fattr_sz)
-#define NFS3_wccstat_sz (1+NFS3_wcc_data_sz)
-#define NFS3_removeres_sz (NFS3_wccstat_sz)
+#define NFS3_getattrres_sz (1+NFS3_fattr_sz)
+#define NFS3_setattrres_sz (1+NFS3_wcc_data_sz)
+#define NFS3_removeres_sz (NFS3_setattrres_sz)
#define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz))
#define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1)
#define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1)
@@ -100,1079 +100,2362 @@ static const umode_t nfs_type2fmt[] = {
[NF3FIFO] = S_IFIFO,
};
+/*
+ * While encoding arguments, set up the reply buffer in advance to
+ * receive reply data directly into the page cache.
+ */
+static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages,
+ unsigned int base, unsigned int len,
+ unsigned int bufsize)
+{
+ struct rpc_auth *auth = req->rq_cred->cr_auth;
+ unsigned int replen;
+
+ replen = RPC_REPHDRSIZE + auth->au_rslack + bufsize;
+ xdr_inline_pages(&req->rq_rcv_buf, replen << 2, pages, base, len);
+}
+
+/*
+ * Handle decode buffer overflows out-of-line.
+ */
static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
{
- dprintk("nfs: %s: prematurely hit end of receive buffer. "
+ dprintk("NFS: %s prematurely hit the end of our receive buffer. "
"Remaining buffer length is %tu words.\n",
func, xdr->end - xdr->p);
}
+
/*
- * Common NFS XDR functions as inlines
+ * Encode/decode NFSv3 basic data types
+ *
+ * Basic NFSv3 data types are defined in section 2.5 of RFC 1813:
+ * "NFS Version 3 Protocol Specification".
+ *
+ * Not all basic data types have their own encoding and decoding
+ * functions. For run-time efficiency, some data types are encoded
+ * or decoded inline.
*/
-static inline __be32 *
-xdr_encode_fhandle(__be32 *p, const struct nfs_fh *fh)
+
+static void encode_uint32(struct xdr_stream *xdr, u32 value)
{
- return xdr_encode_array(p, fh->data, fh->size);
+ __be32 *p = xdr_reserve_space(xdr, 4);
+ *p = cpu_to_be32(value);
}
-static inline __be32 *
-xdr_decode_fhandle(__be32 *p, struct nfs_fh *fh)
+static int decode_uint32(struct xdr_stream *xdr, u32 *value)
{
- if ((fh->size = ntohl(*p++)) <= NFS3_FHSIZE) {
- memcpy(fh->data, p, fh->size);
- return p + XDR_QUADLEN(fh->size);
- }
- return NULL;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ *value = be32_to_cpup(p);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static int decode_uint64(struct xdr_stream *xdr, u64 *value)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 8);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ xdr_decode_hyper(p, value);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * fileid3
+ *
+ * typedef uint64 fileid3;
+ */
+static __be32 *xdr_decode_fileid3(__be32 *p, u64 *fileid)
+{
+ return xdr_decode_hyper(p, fileid);
+}
+
+static int decode_fileid3(struct xdr_stream *xdr, u64 *fileid)
+{
+ return decode_uint64(xdr, fileid);
+}
+
+/*
+ * filename3
+ *
+ * typedef string filename3<>;
+ */
+static void encode_filename3(struct xdr_stream *xdr,
+ const char *name, u32 length)
+{
+ __be32 *p;
+
+ BUG_ON(length > NFS3_MAXNAMLEN);
+ p = xdr_reserve_space(xdr, 4 + length);
+ xdr_encode_opaque(p, name, length);
}
-static inline __be32 *
-xdr_decode_fhandle_stream(struct xdr_stream *xdr, struct nfs_fh *fh)
+static int decode_inline_filename3(struct xdr_stream *xdr,
+ const char **name, u32 *length)
{
__be32 *p;
+ u32 count;
+
p = xdr_inline_decode(xdr, 4);
- if (unlikely(!p))
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ count = be32_to_cpup(p);
+ if (count > NFS3_MAXNAMLEN)
+ goto out_nametoolong;
+ p = xdr_inline_decode(xdr, count);
+ if (unlikely(p == NULL))
goto out_overflow;
- fh->size = ntohl(*p++);
+ *name = (const char *)p;
+ *length = count;
+ return 0;
- if (fh->size <= NFS3_FHSIZE) {
- p = xdr_inline_decode(xdr, fh->size);
- if (unlikely(!p))
- goto out_overflow;
- memcpy(fh->data, p, fh->size);
- return p + XDR_QUADLEN(fh->size);
- }
- return NULL;
+out_nametoolong:
+ dprintk("NFS: returned filename too long: %u\n", count);
+ return -ENAMETOOLONG;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * nfspath3
+ *
+ * typedef string nfspath3<>;
+ */
+static void encode_nfspath3(struct xdr_stream *xdr, struct page **pages,
+ const u32 length)
+{
+ BUG_ON(length > NFS3_MAXPATHLEN);
+ encode_uint32(xdr, length);
+ xdr_write_pages(xdr, pages, 0, length);
+}
+static int decode_nfspath3(struct xdr_stream *xdr)
+{
+ u32 recvd, count;
+ size_t hdrlen;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ count = be32_to_cpup(p);
+ if (unlikely(count >= xdr->buf->page_len || count > NFS3_MAXPATHLEN))
+ goto out_nametoolong;
+ hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
+ recvd = xdr->buf->len - hdrlen;
+ if (unlikely(count > recvd))
+ goto out_cheating;
+
+ xdr_read_pages(xdr, count);
+ xdr_terminate_string(xdr->buf, count);
+ return 0;
+
+out_nametoolong:
+ dprintk("NFS: returned pathname too long: %u\n", count);
+ return -ENAMETOOLONG;
+out_cheating:
+ dprintk("NFS: server cheating in pathname result: "
+ "count %u > recvd %u\n", count, recvd);
+ return -EIO;
out_overflow:
print_overflow_msg(__func__, xdr);
- return ERR_PTR(-EIO);
+ return -EIO;
}
/*
- * Encode/decode time.
+ * cookie3
+ *
+ * typedef uint64 cookie3
*/
-static inline __be32 *
-xdr_encode_time3(__be32 *p, struct timespec *timep)
+static __be32 *xdr_encode_cookie3(__be32 *p, u64 cookie)
{
- *p++ = htonl(timep->tv_sec);
- *p++ = htonl(timep->tv_nsec);
- return p;
+ return xdr_encode_hyper(p, cookie);
}
-static inline __be32 *
-xdr_decode_time3(__be32 *p, struct timespec *timep)
+static int decode_cookie3(struct xdr_stream *xdr, u64 *cookie)
{
- timep->tv_sec = ntohl(*p++);
- timep->tv_nsec = ntohl(*p++);
- return p;
+ return decode_uint64(xdr, cookie);
+}
+
+/*
+ * cookieverf3
+ *
+ * typedef opaque cookieverf3[NFS3_COOKIEVERFSIZE];
+ */
+static __be32 *xdr_encode_cookieverf3(__be32 *p, const __be32 *verifier)
+{
+ memcpy(p, verifier, NFS3_COOKIEVERFSIZE);
+ return p + XDR_QUADLEN(NFS3_COOKIEVERFSIZE);
+}
+
+static int decode_cookieverf3(struct xdr_stream *xdr, __be32 *verifier)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, NFS3_COOKIEVERFSIZE);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ memcpy(verifier, p, NFS3_COOKIEVERFSIZE);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * createverf3
+ *
+ * typedef opaque createverf3[NFS3_CREATEVERFSIZE];
+ */
+static void encode_createverf3(struct xdr_stream *xdr, const __be32 *verifier)
+{
+ __be32 *p;
+
+ p = xdr_reserve_space(xdr, NFS3_CREATEVERFSIZE);
+ memcpy(p, verifier, NFS3_CREATEVERFSIZE);
+}
+
+static int decode_writeverf3(struct xdr_stream *xdr, __be32 *verifier)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, NFS3_WRITEVERFSIZE);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ memcpy(verifier, p, NFS3_WRITEVERFSIZE);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * size3
+ *
+ * typedef uint64 size3;
+ */
+static __be32 *xdr_decode_size3(__be32 *p, u64 *size)
+{
+ return xdr_decode_hyper(p, size);
+}
+
+/*
+ * nfsstat3
+ *
+ * enum nfsstat3 {
+ * NFS3_OK = 0,
+ * ...
+ * }
+ */
+#define NFS3_OK NFS_OK
+
+static int decode_nfsstat3(struct xdr_stream *xdr, enum nfs_stat *status)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ *status = be32_to_cpup(p);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * ftype3
+ *
+ * enum ftype3 {
+ * NF3REG = 1,
+ * NF3DIR = 2,
+ * NF3BLK = 3,
+ * NF3CHR = 4,
+ * NF3LNK = 5,
+ * NF3SOCK = 6,
+ * NF3FIFO = 7
+ * };
+ */
+static void encode_ftype3(struct xdr_stream *xdr, const u32 type)
+{
+ BUG_ON(type > NF3FIFO);
+ encode_uint32(xdr, type);
}
-static __be32 *
-xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr)
+static __be32 *xdr_decode_ftype3(__be32 *p, umode_t *mode)
{
- unsigned int type, major, minor;
- umode_t fmode;
+ u32 type;
- type = ntohl(*p++);
+ type = be32_to_cpup(p++);
if (type > NF3FIFO)
type = NF3NON;
- fmode = nfs_type2fmt[type];
- fattr->mode = (ntohl(*p++) & ~S_IFMT) | fmode;
- fattr->nlink = ntohl(*p++);
- fattr->uid = ntohl(*p++);
- fattr->gid = ntohl(*p++);
- p = xdr_decode_hyper(p, &fattr->size);
- p = xdr_decode_hyper(p, &fattr->du.nfs3.used);
-
- /* Turn remote device info into Linux-specific dev_t */
- major = ntohl(*p++);
- minor = ntohl(*p++);
- fattr->rdev = MKDEV(major, minor);
- if (MAJOR(fattr->rdev) != major || MINOR(fattr->rdev) != minor)
- fattr->rdev = 0;
+ *mode = nfs_type2fmt[type];
+ return p;
+}
- p = xdr_decode_hyper(p, &fattr->fsid.major);
- fattr->fsid.minor = 0;
- p = xdr_decode_hyper(p, &fattr->fileid);
- p = xdr_decode_time3(p, &fattr->atime);
- p = xdr_decode_time3(p, &fattr->mtime);
- p = xdr_decode_time3(p, &fattr->ctime);
+/*
+ * specdata3
+ *
+ * struct specdata3 {
+ * uint32 specdata1;
+ * uint32 specdata2;
+ * };
+ */
+static void encode_specdata3(struct xdr_stream *xdr, const dev_t rdev)
+{
+ __be32 *p;
- /* Update the mode bits */
- fattr->valid |= NFS_ATTR_FATTR_V3;
+ p = xdr_reserve_space(xdr, 8);
+ *p++ = cpu_to_be32(MAJOR(rdev));
+ *p = cpu_to_be32(MINOR(rdev));
+}
+
+static __be32 *xdr_decode_specdata3(__be32 *p, dev_t *rdev)
+{
+ unsigned int major, minor;
+
+ major = be32_to_cpup(p++);
+ minor = be32_to_cpup(p++);
+ *rdev = MKDEV(major, minor);
+ if (MAJOR(*rdev) != major || MINOR(*rdev) != minor)
+ *rdev = 0;
+ return p;
+}
+
+/*
+ * nfs_fh3
+ *
+ * struct nfs_fh3 {
+ * opaque data<NFS3_FHSIZE>;
+ * };
+ */
+static void encode_nfs_fh3(struct xdr_stream *xdr, const struct nfs_fh *fh)
+{
+ __be32 *p;
+
+ BUG_ON(fh->size > NFS3_FHSIZE);
+ p = xdr_reserve_space(xdr, 4 + fh->size);
+ xdr_encode_opaque(p, fh->data, fh->size);
+}
+
+static int decode_nfs_fh3(struct xdr_stream *xdr, struct nfs_fh *fh)
+{
+ u32 length;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ length = be32_to_cpup(p++);
+ if (unlikely(length > NFS3_FHSIZE))
+ goto out_toobig;
+ p = xdr_inline_decode(xdr, length);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ fh->size = length;
+ memcpy(fh->data, p, length);
+ return 0;
+out_toobig:
+ dprintk("NFS: file handle size (%u) too big\n", length);
+ return -E2BIG;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static void zero_nfs_fh3(struct nfs_fh *fh)
+{
+ memset(fh, 0, sizeof(*fh));
+}
+
+/*
+ * nfstime3
+ *
+ * struct nfstime3 {
+ * uint32 seconds;
+ * uint32 nseconds;
+ * };
+ */
+static __be32 *xdr_encode_nfstime3(__be32 *p, const struct timespec *timep)
+{
+ *p++ = cpu_to_be32(timep->tv_sec);
+ *p++ = cpu_to_be32(timep->tv_nsec);
return p;
}
-static inline __be32 *
-xdr_encode_sattr(__be32 *p, struct iattr *attr)
+static __be32 *xdr_decode_nfstime3(__be32 *p, struct timespec *timep)
{
+ timep->tv_sec = be32_to_cpup(p++);
+ timep->tv_nsec = be32_to_cpup(p++);
+ return p;
+}
+
+/*
+ * sattr3
+ *
+ * enum time_how {
+ * DONT_CHANGE = 0,
+ * SET_TO_SERVER_TIME = 1,
+ * SET_TO_CLIENT_TIME = 2
+ * };
+ *
+ * union set_mode3 switch (bool set_it) {
+ * case TRUE:
+ * mode3 mode;
+ * default:
+ * void;
+ * };
+ *
+ * union set_uid3 switch (bool set_it) {
+ * case TRUE:
+ * uid3 uid;
+ * default:
+ * void;
+ * };
+ *
+ * union set_gid3 switch (bool set_it) {
+ * case TRUE:
+ * gid3 gid;
+ * default:
+ * void;
+ * };
+ *
+ * union set_size3 switch (bool set_it) {
+ * case TRUE:
+ * size3 size;
+ * default:
+ * void;
+ * };
+ *
+ * union set_atime switch (time_how set_it) {
+ * case SET_TO_CLIENT_TIME:
+ * nfstime3 atime;
+ * default:
+ * void;
+ * };
+ *
+ * union set_mtime switch (time_how set_it) {
+ * case SET_TO_CLIENT_TIME:
+ * nfstime3 mtime;
+ * default:
+ * void;
+ * };
+ *
+ * struct sattr3 {
+ * set_mode3 mode;
+ * set_uid3 uid;
+ * set_gid3 gid;
+ * set_size3 size;
+ * set_atime atime;
+ * set_mtime mtime;
+ * };
+ */
+static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr)
+{
+ u32 nbytes;
+ __be32 *p;
+
+ /*
+ * In order to make only a single xdr_reserve_space() call,
+ * pre-compute the total number of bytes to be reserved.
+ * Six boolean values, one for each set_foo field, are always
+ * present in the encoded result, so start there.
+ */
+ nbytes = 6 * 4;
+ if (attr->ia_valid & ATTR_MODE)
+ nbytes += 4;
+ if (attr->ia_valid & ATTR_UID)
+ nbytes += 4;
+ if (attr->ia_valid & ATTR_GID)
+ nbytes += 4;
+ if (attr->ia_valid & ATTR_SIZE)
+ nbytes += 8;
+ if (attr->ia_valid & ATTR_ATIME_SET)
+ nbytes += 8;
+ if (attr->ia_valid & ATTR_MTIME_SET)
+ nbytes += 8;
+ p = xdr_reserve_space(xdr, nbytes);
+
if (attr->ia_valid & ATTR_MODE) {
*p++ = xdr_one;
- *p++ = htonl(attr->ia_mode & S_IALLUGO);
- } else {
+ *p++ = cpu_to_be32(attr->ia_mode & S_IALLUGO);
+ } else
*p++ = xdr_zero;
- }
+
if (attr->ia_valid & ATTR_UID) {
*p++ = xdr_one;
- *p++ = htonl(attr->ia_uid);
- } else {
+ *p++ = cpu_to_be32(attr->ia_uid);
+ } else
*p++ = xdr_zero;
- }
+
if (attr->ia_valid & ATTR_GID) {
*p++ = xdr_one;
- *p++ = htonl(attr->ia_gid);
- } else {
+ *p++ = cpu_to_be32(attr->ia_gid);
+ } else
*p++ = xdr_zero;
- }
+
if (attr->ia_valid & ATTR_SIZE) {
*p++ = xdr_one;
- p = xdr_encode_hyper(p, (__u64) attr->ia_size);
- } else {
+ p = xdr_encode_hyper(p, (u64)attr->ia_size);
+ } else
*p++ = xdr_zero;
- }
+
if (attr->ia_valid & ATTR_ATIME_SET) {
*p++ = xdr_two;
- p = xdr_encode_time3(p, &attr->ia_atime);
+ p = xdr_encode_nfstime3(p, &attr->ia_atime);
} else if (attr->ia_valid & ATTR_ATIME) {
*p++ = xdr_one;
- } else {
+ } else
*p++ = xdr_zero;
- }
+
if (attr->ia_valid & ATTR_MTIME_SET) {
*p++ = xdr_two;
- p = xdr_encode_time3(p, &attr->ia_mtime);
+ xdr_encode_nfstime3(p, &attr->ia_mtime);
} else if (attr->ia_valid & ATTR_MTIME) {
- *p++ = xdr_one;
- } else {
- *p++ = xdr_zero;
- }
- return p;
+ *p = xdr_one;
+ } else
+ *p = xdr_zero;
+}
+
+/*
+ * fattr3
+ *
+ * struct fattr3 {
+ * ftype3 type;
+ * mode3 mode;
+ * uint32 nlink;
+ * uid3 uid;
+ * gid3 gid;
+ * size3 size;
+ * size3 used;
+ * specdata3 rdev;
+ * uint64 fsid;
+ * fileid3 fileid;
+ * nfstime3 atime;
+ * nfstime3 mtime;
+ * nfstime3 ctime;
+ * };
+ */
+static int decode_fattr3(struct xdr_stream *xdr, struct nfs_fattr *fattr)
+{
+ umode_t fmode;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, NFS3_fattr_sz << 2);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+
+ p = xdr_decode_ftype3(p, &fmode);
+
+ fattr->mode = (be32_to_cpup(p++) & ~S_IFMT) | fmode;
+ fattr->nlink = be32_to_cpup(p++);
+ fattr->uid = be32_to_cpup(p++);
+ fattr->gid = be32_to_cpup(p++);
+
+ p = xdr_decode_size3(p, &fattr->size);
+ p = xdr_decode_size3(p, &fattr->du.nfs3.used);
+ p = xdr_decode_specdata3(p, &fattr->rdev);
+
+ p = xdr_decode_hyper(p, &fattr->fsid.major);
+ fattr->fsid.minor = 0;
+
+ p = xdr_decode_fileid3(p, &fattr->fileid);
+ p = xdr_decode_nfstime3(p, &fattr->atime);
+ p = xdr_decode_nfstime3(p, &fattr->mtime);
+ xdr_decode_nfstime3(p, &fattr->ctime);
+
+ fattr->valid |= NFS_ATTR_FATTR_V3;
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
}
-static inline __be32 *
-xdr_decode_wcc_attr(__be32 *p, struct nfs_fattr *fattr)
+/*
+ * post_op_attr
+ *
+ * union post_op_attr switch (bool attributes_follow) {
+ * case TRUE:
+ * fattr3 attributes;
+ * case FALSE:
+ * void;
+ * };
+ */
+static int decode_post_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
{
- p = xdr_decode_hyper(p, &fattr->pre_size);
- p = xdr_decode_time3(p, &fattr->pre_mtime);
- p = xdr_decode_time3(p, &fattr->pre_ctime);
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ if (*p != xdr_zero)
+ return decode_fattr3(xdr, fattr);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * wcc_attr
+ * struct wcc_attr {
+ * size3 size;
+ * nfstime3 mtime;
+ * nfstime3 ctime;
+ * };
+ */
+static int decode_wcc_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, NFS3_wcc_attr_sz << 2);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+
fattr->valid |= NFS_ATTR_FATTR_PRESIZE
| NFS_ATTR_FATTR_PREMTIME
| NFS_ATTR_FATTR_PRECTIME;
- return p;
-}
-static inline __be32 *
-xdr_decode_post_op_attr(__be32 *p, struct nfs_fattr *fattr)
-{
- if (*p++)
- p = xdr_decode_fattr(p, fattr);
- return p;
+ p = xdr_decode_size3(p, &fattr->pre_size);
+ p = xdr_decode_nfstime3(p, &fattr->pre_mtime);
+ xdr_decode_nfstime3(p, &fattr->pre_ctime);
+
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
}
-static inline __be32 *
-xdr_decode_post_op_attr_stream(struct xdr_stream *xdr, struct nfs_fattr *fattr)
+/*
+ * pre_op_attr
+ * union pre_op_attr switch (bool attributes_follow) {
+ * case TRUE:
+ * wcc_attr attributes;
+ * case FALSE:
+ * void;
+ * };
+ *
+ * wcc_data
+ *
+ * struct wcc_data {
+ * pre_op_attr before;
+ * post_op_attr after;
+ * };
+ */
+static int decode_pre_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
{
__be32 *p;
p = xdr_inline_decode(xdr, 4);
- if (unlikely(!p))
+ if (unlikely(p == NULL))
goto out_overflow;
- if (ntohl(*p++)) {
- p = xdr_inline_decode(xdr, 84);
- if (unlikely(!p))
- goto out_overflow;
- p = xdr_decode_fattr(p, fattr);
- }
- return p;
+ if (*p != xdr_zero)
+ return decode_wcc_attr(xdr, fattr);
+ return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
- return ERR_PTR(-EIO);
+ return -EIO;
}
-static inline __be32 *
-xdr_decode_pre_op_attr(__be32 *p, struct nfs_fattr *fattr)
+static int decode_wcc_data(struct xdr_stream *xdr, struct nfs_fattr *fattr)
{
- if (*p++)
- return xdr_decode_wcc_attr(p, fattr);
- return p;
+ int error;
+
+ error = decode_pre_op_attr(xdr, fattr);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(xdr, fattr);
+out:
+ return error;
}
+/*
+ * post_op_fh3
+ *
+ * union post_op_fh3 switch (bool handle_follows) {
+ * case TRUE:
+ * nfs_fh3 handle;
+ * case FALSE:
+ * void;
+ * };
+ */
+static int decode_post_op_fh3(struct xdr_stream *xdr, struct nfs_fh *fh)
+{
+ __be32 *p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ if (*p != xdr_zero)
+ return decode_nfs_fh3(xdr, fh);
+ zero_nfs_fh3(fh);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
-static inline __be32 *
-xdr_decode_wcc_data(__be32 *p, struct nfs_fattr *fattr)
+/*
+ * diropargs3
+ *
+ * struct diropargs3 {
+ * nfs_fh3 dir;
+ * filename3 name;
+ * };
+ */
+static void encode_diropargs3(struct xdr_stream *xdr, const struct nfs_fh *fh,
+ const char *name, u32 length)
{
- p = xdr_decode_pre_op_attr(p, fattr);
- return xdr_decode_post_op_attr(p, fattr);
+ encode_nfs_fh3(xdr, fh);
+ encode_filename3(xdr, name, length);
}
+
/*
- * NFS encode functions
+ * NFSv3 XDR encode functions
+ *
+ * NFSv3 argument types are defined in section 3.3 of RFC 1813:
+ * "NFS Version 3 Protocol Specification".
*/
/*
- * Encode file handle argument
+ * 3.3.1 GETATTR3args
+ *
+ * struct GETATTR3args {
+ * nfs_fh3 object;
+ * };
*/
-static int
-nfs3_xdr_fhandle(struct rpc_rqst *req, __be32 *p, struct nfs_fh *fh)
+static void nfs3_xdr_enc_getattr3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_fh *fh)
{
- p = xdr_encode_fhandle(p, fh);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
+ encode_nfs_fh3(xdr, fh);
}
/*
- * Encode SETATTR arguments
+ * 3.3.2 SETATTR3args
+ *
+ * union sattrguard3 switch (bool check) {
+ * case TRUE:
+ * nfstime3 obj_ctime;
+ * case FALSE:
+ * void;
+ * };
+ *
+ * struct SETATTR3args {
+ * nfs_fh3 object;
+ * sattr3 new_attributes;
+ * sattrguard3 guard;
+ * };
*/
-static int
-nfs3_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs3_sattrargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_sattr(p, args->sattr);
- *p++ = htonl(args->guard);
- if (args->guard)
- p = xdr_encode_time3(p, &args->guardtime);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
+static void encode_sattrguard3(struct xdr_stream *xdr,
+ const struct nfs3_sattrargs *args)
+{
+ __be32 *p;
+
+ if (args->guard) {
+ p = xdr_reserve_space(xdr, 4 + 8);
+ *p++ = xdr_one;
+ xdr_encode_nfstime3(p, &args->guardtime);
+ } else {
+ p = xdr_reserve_space(xdr, 4);
+ *p = xdr_zero;
+ }
+}
+
+static void nfs3_xdr_enc_setattr3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_sattrargs *args)
+{
+ encode_nfs_fh3(xdr, args->fh);
+ encode_sattr3(xdr, args->sattr);
+ encode_sattrguard3(xdr, args);
}
/*
- * Encode directory ops argument
+ * 3.3.3 LOOKUP3args
+ *
+ * struct LOOKUP3args {
+ * diropargs3 what;
+ * };
*/
-static int
-nfs3_xdr_diropargs(struct rpc_rqst *req, __be32 *p, struct nfs3_diropargs *args)
+static void nfs3_xdr_enc_lookup3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_diropargs *args)
{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name, args->len);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
+ encode_diropargs3(xdr, args->fh, args->name, args->len);
}
/*
- * Encode REMOVE argument
+ * 3.3.4 ACCESS3args
+ *
+ * struct ACCESS3args {
+ * nfs_fh3 object;
+ * uint32 access;
+ * };
*/
-static int
-nfs3_xdr_removeargs(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
+static void encode_access3args(struct xdr_stream *xdr,
+ const struct nfs3_accessargs *args)
{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name.name, args->name.len);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
+ encode_nfs_fh3(xdr, args->fh);
+ encode_uint32(xdr, args->access);
+}
+
+static void nfs3_xdr_enc_access3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_accessargs *args)
+{
+ encode_access3args(xdr, args);
}
/*
- * Encode access() argument
+ * 3.3.5 READLINK3args
+ *
+ * struct READLINK3args {
+ * nfs_fh3 symlink;
+ * };
*/
-static int
-nfs3_xdr_accessargs(struct rpc_rqst *req, __be32 *p, struct nfs3_accessargs *args)
+static void nfs3_xdr_enc_readlink3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_readlinkargs *args)
{
- p = xdr_encode_fhandle(p, args->fh);
- *p++ = htonl(args->access);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
+ encode_nfs_fh3(xdr, args->fh);
+ prepare_reply_buffer(req, args->pages, args->pgbase,
+ args->pglen, NFS3_readlinkres_sz);
}
/*
- * Arguments to a READ call. Since we read data directly into the page
- * cache, we also set up the reply iovec here so that iov[1] points
- * exactly to the page we want to fetch.
+ * 3.3.6 READ3args
+ *
+ * struct READ3args {
+ * nfs_fh3 file;
+ * offset3 offset;
+ * count3 count;
+ * };
*/
-static int
-nfs3_xdr_readargs(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
+static void encode_read3args(struct xdr_stream *xdr,
+ const struct nfs_readargs *args)
{
- struct rpc_auth *auth = req->rq_cred->cr_auth;
- unsigned int replen;
- u32 count = args->count;
+ __be32 *p;
+
+ encode_nfs_fh3(xdr, args->fh);
- p = xdr_encode_fhandle(p, args->fh);
+ p = xdr_reserve_space(xdr, 8 + 4);
p = xdr_encode_hyper(p, args->offset);
- *p++ = htonl(count);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+ *p = cpu_to_be32(args->count);
+}
- /* Inline the page array */
- replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen,
- args->pages, args->pgbase, count);
+static void nfs3_xdr_enc_read3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_readargs *args)
+{
+ encode_read3args(xdr, args);
+ prepare_reply_buffer(req, args->pages, args->pgbase,
+ args->count, NFS3_readres_sz);
req->rq_rcv_buf.flags |= XDRBUF_READ;
- return 0;
}
/*
- * Write arguments. Splice the buffer to be written into the iovec.
+ * 3.3.7 WRITE3args
+ *
+ * enum stable_how {
+ * UNSTABLE = 0,
+ * DATA_SYNC = 1,
+ * FILE_SYNC = 2
+ * };
+ *
+ * struct WRITE3args {
+ * nfs_fh3 file;
+ * offset3 offset;
+ * count3 count;
+ * stable_how stable;
+ * opaque data<>;
+ * };
*/
-static int
-nfs3_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
+static void encode_write3args(struct xdr_stream *xdr,
+ const struct nfs_writeargs *args)
{
- struct xdr_buf *sndbuf = &req->rq_snd_buf;
- u32 count = args->count;
+ __be32 *p;
+
+ encode_nfs_fh3(xdr, args->fh);
- p = xdr_encode_fhandle(p, args->fh);
+ p = xdr_reserve_space(xdr, 8 + 4 + 4 + 4);
p = xdr_encode_hyper(p, args->offset);
- *p++ = htonl(count);
- *p++ = htonl(args->stable);
- *p++ = htonl(count);
- sndbuf->len = xdr_adjust_iovec(sndbuf->head, p);
-
- /* Copy the page array */
- xdr_encode_pages(sndbuf, args->pages, args->pgbase, count);
- sndbuf->flags |= XDRBUF_WRITE;
- return 0;
+ *p++ = cpu_to_be32(args->count);
+ *p++ = cpu_to_be32(args->stable);
+ *p = cpu_to_be32(args->count);
+ xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
+}
+
+static void nfs3_xdr_enc_write3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_writeargs *args)
+{
+ encode_write3args(xdr, args);
+ xdr->buf->flags |= XDRBUF_WRITE;
}
/*
- * Encode CREATE arguments
+ * 3.3.8 CREATE3args
+ *
+ * enum createmode3 {
+ * UNCHECKED = 0,
+ * GUARDED = 1,
+ * EXCLUSIVE = 2
+ * };
+ *
+ * union createhow3 switch (createmode3 mode) {
+ * case UNCHECKED:
+ * case GUARDED:
+ * sattr3 obj_attributes;
+ * case EXCLUSIVE:
+ * createverf3 verf;
+ * };
+ *
+ * struct CREATE3args {
+ * diropargs3 where;
+ * createhow3 how;
+ * };
*/
-static int
-nfs3_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs3_createargs *args)
+static void encode_createhow3(struct xdr_stream *xdr,
+ const struct nfs3_createargs *args)
{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name, args->len);
-
- *p++ = htonl(args->createmode);
- if (args->createmode == NFS3_CREATE_EXCLUSIVE) {
- *p++ = args->verifier[0];
- *p++ = args->verifier[1];
- } else
- p = xdr_encode_sattr(p, args->sattr);
+ encode_uint32(xdr, args->createmode);
+ switch (args->createmode) {
+ case NFS3_CREATE_UNCHECKED:
+ case NFS3_CREATE_GUARDED:
+ encode_sattr3(xdr, args->sattr);
+ break;
+ case NFS3_CREATE_EXCLUSIVE:
+ encode_createverf3(xdr, args->verifier);
+ break;
+ default:
+ BUG();
+ }
+}
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
+static void nfs3_xdr_enc_create3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_createargs *args)
+{
+ encode_diropargs3(xdr, args->fh, args->name, args->len);
+ encode_createhow3(xdr, args);
}
/*
- * Encode MKDIR arguments
+ * 3.3.9 MKDIR3args
+ *
+ * struct MKDIR3args {
+ * diropargs3 where;
+ * sattr3 attributes;
+ * };
*/
-static int
-nfs3_xdr_mkdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mkdirargs *args)
+static void nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_mkdirargs *args)
{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name, args->len);
- p = xdr_encode_sattr(p, args->sattr);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
+ encode_diropargs3(xdr, args->fh, args->name, args->len);
+ encode_sattr3(xdr, args->sattr);
}
/*
- * Encode SYMLINK arguments
+ * 3.3.10 SYMLINK3args
+ *
+ * struct symlinkdata3 {
+ * sattr3 symlink_attributes;
+ * nfspath3 symlink_data;
+ * };
+ *
+ * struct SYMLINK3args {
+ * diropargs3 where;
+ * symlinkdata3 symlink;
+ * };
*/
-static int
-nfs3_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_symlinkargs *args)
+static void encode_symlinkdata3(struct xdr_stream *xdr,
+ const struct nfs3_symlinkargs *args)
{
- p = xdr_encode_fhandle(p, args->fromfh);
- p = xdr_encode_array(p, args->fromname, args->fromlen);
- p = xdr_encode_sattr(p, args->sattr);
- *p++ = htonl(args->pathlen);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+ encode_sattr3(xdr, args->sattr);
+ encode_nfspath3(xdr, args->pages, args->pathlen);
+}
- /* Copy the page */
- xdr_encode_pages(&req->rq_snd_buf, args->pages, 0, args->pathlen);
- return 0;
+static void nfs3_xdr_enc_symlink3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_symlinkargs *args)
+{
+ encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen);
+ encode_symlinkdata3(xdr, args);
}
/*
- * Encode MKNOD arguments
+ * 3.3.11 MKNOD3args
+ *
+ * struct devicedata3 {
+ * sattr3 dev_attributes;
+ * specdata3 spec;
+ * };
+ *
+ * union mknoddata3 switch (ftype3 type) {
+ * case NF3CHR:
+ * case NF3BLK:
+ * devicedata3 device;
+ * case NF3SOCK:
+ * case NF3FIFO:
+ * sattr3 pipe_attributes;
+ * default:
+ * void;
+ * };
+ *
+ * struct MKNOD3args {
+ * diropargs3 where;
+ * mknoddata3 what;
+ * };
*/
-static int
-nfs3_xdr_mknodargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mknodargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name, args->len);
- *p++ = htonl(args->type);
- p = xdr_encode_sattr(p, args->sattr);
- if (args->type == NF3CHR || args->type == NF3BLK) {
- *p++ = htonl(MAJOR(args->rdev));
- *p++ = htonl(MINOR(args->rdev));
+static void encode_devicedata3(struct xdr_stream *xdr,
+ const struct nfs3_mknodargs *args)
+{
+ encode_sattr3(xdr, args->sattr);
+ encode_specdata3(xdr, args->rdev);
+}
+
+static void encode_mknoddata3(struct xdr_stream *xdr,
+ const struct nfs3_mknodargs *args)
+{
+ encode_ftype3(xdr, args->type);
+ switch (args->type) {
+ case NF3CHR:
+ case NF3BLK:
+ encode_devicedata3(xdr, args);
+ break;
+ case NF3SOCK:
+ case NF3FIFO:
+ encode_sattr3(xdr, args->sattr);
+ break;
+ case NF3REG:
+ case NF3DIR:
+ break;
+ default:
+ BUG();
}
+}
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
+static void nfs3_xdr_enc_mknod3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_mknodargs *args)
+{
+ encode_diropargs3(xdr, args->fh, args->name, args->len);
+ encode_mknoddata3(xdr, args);
}
/*
- * Encode RENAME arguments
+ * 3.3.12 REMOVE3args
+ *
+ * struct REMOVE3args {
+ * diropargs3 object;
+ * };
*/
-static int
-nfs3_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs_renameargs *args)
-{
- p = xdr_encode_fhandle(p, args->old_dir);
- p = xdr_encode_array(p, args->old_name->name, args->old_name->len);
- p = xdr_encode_fhandle(p, args->new_dir);
- p = xdr_encode_array(p, args->new_name->name, args->new_name->len);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
+static void nfs3_xdr_enc_remove3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_removeargs *args)
+{
+ encode_diropargs3(xdr, args->fh, args->name.name, args->name.len);
}
/*
- * Encode LINK arguments
+ * 3.3.14 RENAME3args
+ *
+ * struct RENAME3args {
+ * diropargs3 from;
+ * diropargs3 to;
+ * };
*/
-static int
-nfs3_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_linkargs *args)
+static void nfs3_xdr_enc_rename3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_renameargs *args)
{
- p = xdr_encode_fhandle(p, args->fromfh);
- p = xdr_encode_fhandle(p, args->tofh);
- p = xdr_encode_array(p, args->toname, args->tolen);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
+ const struct qstr *old = args->old_name;
+ const struct qstr *new = args->new_name;
+
+ encode_diropargs3(xdr, args->old_dir, old->name, old->len);
+ encode_diropargs3(xdr, args->new_dir, new->name, new->len);
}
/*
- * Encode arguments to readdir call
+ * 3.3.15 LINK3args
+ *
+ * struct LINK3args {
+ * nfs_fh3 file;
+ * diropargs3 link;
+ * };
*/
-static int
-nfs3_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirargs *args)
+static void nfs3_xdr_enc_link3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_linkargs *args)
{
- struct rpc_auth *auth = req->rq_cred->cr_auth;
- unsigned int replen;
- u32 count = args->count;
-
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_hyper(p, args->cookie);
- *p++ = args->verf[0];
- *p++ = args->verf[1];
- if (args->plus) {
- /* readdirplus: need dircount + buffer size.
- * We just make sure we make dircount big enough */
- *p++ = htonl(count >> 3);
- }
- *p++ = htonl(count);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
-
- /* Inline the page array */
- replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readdirres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count);
- return 0;
+ encode_nfs_fh3(xdr, args->fromfh);
+ encode_diropargs3(xdr, args->tofh, args->toname, args->tolen);
}
/*
- * Decode the result of a readdir call.
- * We just check for syntactical correctness.
+ * 3.3.16 READDIR3args
+ *
+ * struct READDIR3args {
+ * nfs_fh3 dir;
+ * cookie3 cookie;
+ * cookieverf3 cookieverf;
+ * count3 count;
+ * };
*/
-static int
-nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res)
+static void encode_readdir3args(struct xdr_stream *xdr,
+ const struct nfs3_readdirargs *args)
{
- struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
- struct kvec *iov = rcvbuf->head;
- struct page **page;
- size_t hdrlen;
- u32 recvd, pglen;
- int status;
-
- status = ntohl(*p++);
- /* Decode post_op_attrs */
- p = xdr_decode_post_op_attr(p, res->dir_attr);
- if (status)
- return nfs_stat_to_errno(status);
- /* Decode verifier cookie */
- if (res->verf) {
- res->verf[0] = *p++;
- res->verf[1] = *p++;
- } else {
- p += 2;
- }
+ __be32 *p;
- hdrlen = (u8 *) p - (u8 *) iov->iov_base;
- if (iov->iov_len < hdrlen) {
- dprintk("NFS: READDIR reply header overflowed:"
- "length %Zu > %Zu\n", hdrlen, iov->iov_len);
- return -errno_NFSERR_IO;
- } else if (iov->iov_len != hdrlen) {
- dprintk("NFS: READDIR header is short. iovec will be shifted.\n");
- xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen);
- }
+ encode_nfs_fh3(xdr, args->fh);
- pglen = rcvbuf->page_len;
- recvd = rcvbuf->len - hdrlen;
- if (pglen > recvd)
- pglen = recvd;
- page = rcvbuf->pages;
+ p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4);
+ p = xdr_encode_cookie3(p, args->cookie);
+ p = xdr_encode_cookieverf3(p, args->verf);
+ *p = cpu_to_be32(args->count);
+}
- return pglen;
+static void nfs3_xdr_enc_readdir3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_readdirargs *args)
+{
+ encode_readdir3args(xdr, args);
+ prepare_reply_buffer(req, args->pages, 0,
+ args->count, NFS3_readdirres_sz);
}
-__be32 *
-nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_server *server, int plus)
+/*
+ * 3.3.17 READDIRPLUS3args
+ *
+ * struct READDIRPLUS3args {
+ * nfs_fh3 dir;
+ * cookie3 cookie;
+ * cookieverf3 cookieverf;
+ * count3 dircount;
+ * count3 maxcount;
+ * };
+ */
+static void encode_readdirplus3args(struct xdr_stream *xdr,
+ const struct nfs3_readdirargs *args)
{
__be32 *p;
- struct nfs_entry old = *entry;
-
- p = xdr_inline_decode(xdr, 4);
- if (unlikely(!p))
- goto out_overflow;
- if (!ntohl(*p++)) {
- p = xdr_inline_decode(xdr, 4);
- if (unlikely(!p))
- goto out_overflow;
- if (!ntohl(*p++))
- return ERR_PTR(-EAGAIN);
- entry->eof = 1;
- return ERR_PTR(-EBADCOOKIE);
- }
- p = xdr_inline_decode(xdr, 12);
- if (unlikely(!p))
- goto out_overflow;
- p = xdr_decode_hyper(p, &entry->ino);
- entry->len = ntohl(*p++);
+ encode_nfs_fh3(xdr, args->fh);
- p = xdr_inline_decode(xdr, entry->len + 8);
- if (unlikely(!p))
- goto out_overflow;
- entry->name = (const char *) p;
- p += XDR_QUADLEN(entry->len);
- entry->prev_cookie = entry->cookie;
- p = xdr_decode_hyper(p, &entry->cookie);
-
- entry->d_type = DT_UNKNOWN;
- if (plus) {
- entry->fattr->valid = 0;
- p = xdr_decode_post_op_attr_stream(xdr, entry->fattr);
- if (IS_ERR(p))
- goto out_overflow_exit;
- entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
- /* In fact, a post_op_fh3: */
- p = xdr_inline_decode(xdr, 4);
- if (unlikely(!p))
- goto out_overflow;
- if (*p++) {
- p = xdr_decode_fhandle_stream(xdr, entry->fh);
- if (IS_ERR(p))
- goto out_overflow_exit;
- /* Ugh -- server reply was truncated */
- if (p == NULL) {
- dprintk("NFS: FH truncated\n");
- *entry = old;
- return ERR_PTR(-EAGAIN);
- }
- } else
- memset((u8*)(entry->fh), 0, sizeof(*entry->fh));
- }
+ p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4 + 4);
+ p = xdr_encode_cookie3(p, args->cookie);
+ p = xdr_encode_cookieverf3(p, args->verf);
- p = xdr_inline_peek(xdr, 8);
- if (p != NULL)
- entry->eof = !p[0] && p[1];
- else
- entry->eof = 0;
+ /*
+ * readdirplus: need dircount + buffer size.
+ * We just make sure we make dircount big enough
+ */
+ *p++ = cpu_to_be32(args->count >> 3);
- return p;
+ *p = cpu_to_be32(args->count);
+}
-out_overflow:
- print_overflow_msg(__func__, xdr);
-out_overflow_exit:
- return ERR_PTR(-EAGAIN);
+static void nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_readdirargs *args)
+{
+ encode_readdirplus3args(xdr, args);
+ prepare_reply_buffer(req, args->pages, 0,
+ args->count, NFS3_readdirres_sz);
}
/*
- * Encode COMMIT arguments
+ * 3.3.21 COMMIT3args
+ *
+ * struct COMMIT3args {
+ * nfs_fh3 file;
+ * offset3 offset;
+ * count3 count;
+ * };
*/
-static int
-nfs3_xdr_commitargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
+static void encode_commit3args(struct xdr_stream *xdr,
+ const struct nfs_writeargs *args)
{
- p = xdr_encode_fhandle(p, args->fh);
+ __be32 *p;
+
+ encode_nfs_fh3(xdr, args->fh);
+
+ p = xdr_reserve_space(xdr, 8 + 4);
p = xdr_encode_hyper(p, args->offset);
- *p++ = htonl(args->count);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
+ *p = cpu_to_be32(args->count);
}
-#ifdef CONFIG_NFS_V3_ACL
-/*
- * Encode GETACL arguments
- */
-static int
-nfs3_xdr_getaclargs(struct rpc_rqst *req, __be32 *p,
- struct nfs3_getaclargs *args)
+static void nfs3_xdr_enc_commit3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_writeargs *args)
{
- struct rpc_auth *auth = req->rq_cred->cr_auth;
- unsigned int replen;
+ encode_commit3args(xdr, args);
+}
- p = xdr_encode_fhandle(p, args->fh);
- *p++ = htonl(args->mask);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+#ifdef CONFIG_NFS_V3_ACL
- if (args->mask & (NFS_ACL | NFS_DFACL)) {
- /* Inline the page array */
- replen = (RPC_REPHDRSIZE + auth->au_rslack +
- ACL3_getaclres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0,
- NFSACL_MAXPAGES << PAGE_SHIFT);
- }
- return 0;
+static void nfs3_xdr_enc_getacl3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_getaclargs *args)
+{
+ encode_nfs_fh3(xdr, args->fh);
+ encode_uint32(xdr, args->mask);
+ if (args->mask & (NFS_ACL | NFS_DFACL))
+ prepare_reply_buffer(req, args->pages, 0,
+ NFSACL_MAXPAGES << PAGE_SHIFT,
+ ACL3_getaclres_sz);
}
-/*
- * Encode SETACL arguments
- */
-static int
-nfs3_xdr_setaclargs(struct rpc_rqst *req, __be32 *p,
- struct nfs3_setaclargs *args)
+static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_setaclargs *args)
{
- struct xdr_buf *buf = &req->rq_snd_buf;
unsigned int base;
- int err;
-
- p = xdr_encode_fhandle(p, NFS_FH(args->inode));
- *p++ = htonl(args->mask);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- base = req->rq_slen;
+ int error;
+ encode_nfs_fh3(xdr, NFS_FH(args->inode));
+ encode_uint32(xdr, args->mask);
if (args->npages != 0)
- xdr_encode_pages(buf, args->pages, 0, args->len);
- else
- req->rq_slen = xdr_adjust_iovec(req->rq_svec,
- p + XDR_QUADLEN(args->len));
+ xdr_write_pages(xdr, args->pages, 0, args->len);
- err = nfsacl_encode(buf, base, args->inode,
+ base = req->rq_slen;
+ error = nfsacl_encode(xdr->buf, base, args->inode,
(args->mask & NFS_ACL) ?
args->acl_access : NULL, 1, 0);
- if (err > 0)
- err = nfsacl_encode(buf, base + err, args->inode,
- (args->mask & NFS_DFACL) ?
- args->acl_default : NULL, 1,
- NFS_ACL_DEFAULT);
- return (err > 0) ? 0 : err;
+ BUG_ON(error < 0);
+ error = nfsacl_encode(xdr->buf, base + error, args->inode,
+ (args->mask & NFS_DFACL) ?
+ args->acl_default : NULL, 1,
+ NFS_ACL_DEFAULT);
+ BUG_ON(error < 0);
}
+
#endif /* CONFIG_NFS_V3_ACL */
/*
- * NFS XDR decode functions
+ * NFSv3 XDR decode functions
+ *
+ * NFSv3 result types are defined in section 3.3 of RFC 1813:
+ * "NFS Version 3 Protocol Specification".
*/
/*
- * Decode attrstat reply.
+ * 3.3.1 GETATTR3res
+ *
+ * struct GETATTR3resok {
+ * fattr3 obj_attributes;
+ * };
+ *
+ * union GETATTR3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * GETATTR3resok resok;
+ * default:
+ * void;
+ * };
*/
-static int
-nfs3_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
+static int nfs3_xdr_dec_getattr3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_fattr *result)
{
- int status;
-
- if ((status = ntohl(*p++)))
- return nfs_stat_to_errno(status);
- xdr_decode_fattr(p, fattr);
- return 0;
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_default;
+ error = decode_fattr3(xdr, result);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
}
/*
- * Decode status+wcc_data reply
- * SATTR, REMOVE, RMDIR
+ * 3.3.2 SETATTR3res
+ *
+ * struct SETATTR3resok {
+ * wcc_data obj_wcc;
+ * };
+ *
+ * struct SETATTR3resfail {
+ * wcc_data obj_wcc;
+ * };
+ *
+ * union SETATTR3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * SETATTR3resok resok;
+ * default:
+ * SETATTR3resfail resfail;
+ * };
*/
-static int
-nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
+static int nfs3_xdr_dec_setattr3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_fattr *result)
{
- int status;
-
- if ((status = ntohl(*p++)))
- status = nfs_stat_to_errno(status);
- xdr_decode_wcc_data(p, fattr);
- return status;
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_wcc_data(xdr, result);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
}
-static int
-nfs3_xdr_removeres(struct rpc_rqst *req, __be32 *p, struct nfs_removeres *res)
+/*
+ * 3.3.3 LOOKUP3res
+ *
+ * struct LOOKUP3resok {
+ * nfs_fh3 object;
+ * post_op_attr obj_attributes;
+ * post_op_attr dir_attributes;
+ * };
+ *
+ * struct LOOKUP3resfail {
+ * post_op_attr dir_attributes;
+ * };
+ *
+ * union LOOKUP3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * LOOKUP3resok resok;
+ * default:
+ * LOOKUP3resfail resfail;
+ * };
+ */
+static int nfs3_xdr_dec_lookup3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs3_diropres *result)
{
- return nfs3_xdr_wccstat(req, p, res->dir_attr);
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_default;
+ error = decode_nfs_fh3(xdr, result->fh);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(xdr, result->dir_attr);
+out:
+ return error;
+out_default:
+ error = decode_post_op_attr(xdr, result->dir_attr);
+ if (unlikely(error))
+ goto out;
+ return nfs_stat_to_errno(status);
}
/*
- * Decode LOOKUP reply
+ * 3.3.4 ACCESS3res
+ *
+ * struct ACCESS3resok {
+ * post_op_attr obj_attributes;
+ * uint32 access;
+ * };
+ *
+ * struct ACCESS3resfail {
+ * post_op_attr obj_attributes;
+ * };
+ *
+ * union ACCESS3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * ACCESS3resok resok;
+ * default:
+ * ACCESS3resfail resfail;
+ * };
*/
-static int
-nfs3_xdr_lookupres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res)
+static int nfs3_xdr_dec_access3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs3_accessres *result)
{
- int status;
-
- if ((status = ntohl(*p++))) {
- status = nfs_stat_to_errno(status);
- } else {
- if (!(p = xdr_decode_fhandle(p, res->fh)))
- return -errno_NFSERR_IO;
- p = xdr_decode_post_op_attr(p, res->fattr);
- }
- xdr_decode_post_op_attr(p, res->dir_attr);
- return status;
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_default;
+ error = decode_uint32(xdr, &result->access);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
}
/*
- * Decode ACCESS reply
+ * 3.3.5 READLINK3res
+ *
+ * struct READLINK3resok {
+ * post_op_attr symlink_attributes;
+ * nfspath3 data;
+ * };
+ *
+ * struct READLINK3resfail {
+ * post_op_attr symlink_attributes;
+ * };
+ *
+ * union READLINK3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * READLINK3resok resok;
+ * default:
+ * READLINK3resfail resfail;
+ * };
*/
-static int
-nfs3_xdr_accessres(struct rpc_rqst *req, __be32 *p, struct nfs3_accessres *res)
+static int nfs3_xdr_dec_readlink3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_fattr *result)
{
- int status = ntohl(*p++);
-
- p = xdr_decode_post_op_attr(p, res->fattr);
- if (status)
- return nfs_stat_to_errno(status);
- res->access = ntohl(*p++);
- return 0;
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(xdr, result);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_default;
+ error = decode_nfspath3(xdr);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
}
-static int
-nfs3_xdr_readlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readlinkargs *args)
+/*
+ * 3.3.6 READ3res
+ *
+ * struct READ3resok {
+ * post_op_attr file_attributes;
+ * count3 count;
+ * bool eof;
+ * opaque data<>;
+ * };
+ *
+ * struct READ3resfail {
+ * post_op_attr file_attributes;
+ * };
+ *
+ * union READ3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * READ3resok resok;
+ * default:
+ * READ3resfail resfail;
+ * };
+ */
+static int decode_read3resok(struct xdr_stream *xdr,
+ struct nfs_readres *result)
{
- struct rpc_auth *auth = req->rq_cred->cr_auth;
- unsigned int replen;
+ u32 eof, count, ocount, recvd;
+ size_t hdrlen;
+ __be32 *p;
- p = xdr_encode_fhandle(p, args->fh);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+ p = xdr_inline_decode(xdr, 4 + 4 + 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ count = be32_to_cpup(p++);
+ eof = be32_to_cpup(p++);
+ ocount = be32_to_cpup(p++);
+ if (unlikely(ocount != count))
+ goto out_mismatch;
+ hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
+ recvd = xdr->buf->len - hdrlen;
+ if (unlikely(count > recvd))
+ goto out_cheating;
+
+out:
+ xdr_read_pages(xdr, count);
+ result->eof = eof;
+ result->count = count;
+ return count;
+out_mismatch:
+ dprintk("NFS: READ count doesn't match length of opaque: "
+ "count %u != ocount %u\n", count, ocount);
+ return -EIO;
+out_cheating:
+ dprintk("NFS: server cheating in read result: "
+ "count %u > recvd %u\n", count, recvd);
+ count = recvd;
+ eof = 0;
+ goto out;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
- /* Inline the page array */
- replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readlinkres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen);
- return 0;
+static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_readres *result)
+{
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+ error = decode_read3resok(xdr, result);
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
}
/*
- * Decode READLINK reply
+ * 3.3.7 WRITE3res
+ *
+ * enum stable_how {
+ * UNSTABLE = 0,
+ * DATA_SYNC = 1,
+ * FILE_SYNC = 2
+ * };
+ *
+ * struct WRITE3resok {
+ * wcc_data file_wcc;
+ * count3 count;
+ * stable_how committed;
+ * writeverf3 verf;
+ * };
+ *
+ * struct WRITE3resfail {
+ * wcc_data file_wcc;
+ * };
+ *
+ * union WRITE3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * WRITE3resok resok;
+ * default:
+ * WRITE3resfail resfail;
+ * };
*/
-static int
-nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
+static int decode_write3resok(struct xdr_stream *xdr,
+ struct nfs_writeres *result)
{
- struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
- struct kvec *iov = rcvbuf->head;
- size_t hdrlen;
- u32 len, recvd;
- int status;
-
- status = ntohl(*p++);
- p = xdr_decode_post_op_attr(p, fattr);
-
- if (status != 0)
- return nfs_stat_to_errno(status);
-
- /* Convert length of symlink */
- len = ntohl(*p++);
- if (len >= rcvbuf->page_len) {
- dprintk("nfs: server returned giant symlink!\n");
- return -ENAMETOOLONG;
- }
+ __be32 *p;
- hdrlen = (u8 *) p - (u8 *) iov->iov_base;
- if (iov->iov_len < hdrlen) {
- dprintk("NFS: READLINK reply header overflowed:"
- "length %Zu > %Zu\n", hdrlen, iov->iov_len);
- return -errno_NFSERR_IO;
- } else if (iov->iov_len != hdrlen) {
- dprintk("NFS: READLINK header is short. "
- "iovec will be shifted.\n");
- xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen);
- }
- recvd = req->rq_rcv_buf.len - hdrlen;
- if (recvd < len) {
- dprintk("NFS: server cheating in readlink reply: "
- "count %u > recvd %u\n", len, recvd);
- return -EIO;
- }
+ p = xdr_inline_decode(xdr, 4 + 4 + NFS3_WRITEVERFSIZE);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ result->count = be32_to_cpup(p++);
+ result->verf->committed = be32_to_cpup(p++);
+ if (unlikely(result->verf->committed > NFS_FILE_SYNC))
+ goto out_badvalue;
+ memcpy(result->verf->verifier, p, NFS3_WRITEVERFSIZE);
+ return result->count;
+out_badvalue:
+ dprintk("NFS: bad stable_how value: %u\n", result->verf->committed);
+ return -EIO;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
- xdr_terminate_string(rcvbuf, len);
- return 0;
+static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_writeres *result)
+{
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_wcc_data(xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+ error = decode_write3resok(xdr, result);
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
}
/*
- * Decode READ reply
+ * 3.3.8 CREATE3res
+ *
+ * struct CREATE3resok {
+ * post_op_fh3 obj;
+ * post_op_attr obj_attributes;
+ * wcc_data dir_wcc;
+ * };
+ *
+ * struct CREATE3resfail {
+ * wcc_data dir_wcc;
+ * };
+ *
+ * union CREATE3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * CREATE3resok resok;
+ * default:
+ * CREATE3resfail resfail;
+ * };
*/
-static int
-nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
+static int decode_create3resok(struct xdr_stream *xdr,
+ struct nfs3_diropres *result)
{
- struct kvec *iov = req->rq_rcv_buf.head;
- size_t hdrlen;
- u32 count, ocount, recvd;
- int status;
+ int error;
+
+ error = decode_post_op_fh3(xdr, result->fh);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ /* The server isn't required to return a file handle.
+ * If it didn't, force the client to perform a LOOKUP
+ * to determine the correct file handle and attribute
+ * values for the new object. */
+ if (result->fh->size == 0)
+ result->fattr->valid = 0;
+ error = decode_wcc_data(xdr, result->dir_attr);
+out:
+ return error;
+}
- status = ntohl(*p++);
- p = xdr_decode_post_op_attr(p, res->fattr);
+static int nfs3_xdr_dec_create3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs3_diropres *result)
+{
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_default;
+ error = decode_create3resok(xdr, result);
+out:
+ return error;
+out_default:
+ error = decode_wcc_data(xdr, result->dir_attr);
+ if (unlikely(error))
+ goto out;
+ return nfs_stat_to_errno(status);
+}
- if (status != 0)
- return nfs_stat_to_errno(status);
+/*
+ * 3.3.12 REMOVE3res
+ *
+ * struct REMOVE3resok {
+ * wcc_data dir_wcc;
+ * };
+ *
+ * struct REMOVE3resfail {
+ * wcc_data dir_wcc;
+ * };
+ *
+ * union REMOVE3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * REMOVE3resok resok;
+ * default:
+ * REMOVE3resfail resfail;
+ * };
+ */
+static int nfs3_xdr_dec_remove3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_removeres *result)
+{
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_wcc_data(xdr, result->dir_attr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
+}
- /* Decode reply count and EOF flag. NFSv3 is somewhat redundant
- * in that it puts the count both in the res struct and in the
- * opaque data count. */
- count = ntohl(*p++);
- res->eof = ntohl(*p++);
- ocount = ntohl(*p++);
+/*
+ * 3.3.14 RENAME3res
+ *
+ * struct RENAME3resok {
+ * wcc_data fromdir_wcc;
+ * wcc_data todir_wcc;
+ * };
+ *
+ * struct RENAME3resfail {
+ * wcc_data fromdir_wcc;
+ * wcc_data todir_wcc;
+ * };
+ *
+ * union RENAME3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * RENAME3resok resok;
+ * default:
+ * RENAME3resfail resfail;
+ * };
+ */
+static int nfs3_xdr_dec_rename3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_renameres *result)
+{
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_wcc_data(xdr, result->old_fattr);
+ if (unlikely(error))
+ goto out;
+ error = decode_wcc_data(xdr, result->new_fattr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
+}
- if (ocount != count) {
- dprintk("NFS: READ count doesn't match RPC opaque count.\n");
- return -errno_NFSERR_IO;
- }
+/*
+ * 3.3.15 LINK3res
+ *
+ * struct LINK3resok {
+ * post_op_attr file_attributes;
+ * wcc_data linkdir_wcc;
+ * };
+ *
+ * struct LINK3resfail {
+ * post_op_attr file_attributes;
+ * wcc_data linkdir_wcc;
+ * };
+ *
+ * union LINK3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * LINK3resok resok;
+ * default:
+ * LINK3resfail resfail;
+ * };
+ */
+static int nfs3_xdr_dec_link3res(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs3_linkres *result)
+{
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ error = decode_wcc_data(xdr, result->dir_attr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
+}
- hdrlen = (u8 *) p - (u8 *) iov->iov_base;
- if (iov->iov_len < hdrlen) {
- dprintk("NFS: READ reply header overflowed:"
- "length %Zu > %Zu\n", hdrlen, iov->iov_len);
- return -errno_NFSERR_IO;
- } else if (iov->iov_len != hdrlen) {
- dprintk("NFS: READ header is short. iovec will be shifted.\n");
- xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen);
- }
+/**
+ * nfs3_decode_dirent - Decode a single NFSv3 directory entry stored in
+ * the local page cache
+ * @xdr: XDR stream where entry resides
+ * @entry: buffer to fill in with entry data
+ * @plus: boolean indicating whether this should be a readdirplus entry
+ *
+ * Returns zero if successful, otherwise a negative errno value is
+ * returned.
+ *
+ * This function is not invoked during READDIR reply decoding, but
+ * rather whenever an application invokes the getdents(2) system call
+ * on a directory already in our cache.
+ *
+ * 3.3.16 entry3
+ *
+ * struct entry3 {
+ * fileid3 fileid;
+ * filename3 name;
+ * cookie3 cookie;
+ * fhandle3 filehandle;
+ * post_op_attr3 attributes;
+ * entry3 *nextentry;
+ * };
+ *
+ * 3.3.17 entryplus3
+ * struct entryplus3 {
+ * fileid3 fileid;
+ * filename3 name;
+ * cookie3 cookie;
+ * post_op_attr name_attributes;
+ * post_op_fh3 name_handle;
+ * entryplus3 *nextentry;
+ * };
+ */
+int nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
+ int plus)
+{
+ struct nfs_entry old = *entry;
+ __be32 *p;
+ int error;
- recvd = req->rq_rcv_buf.len - hdrlen;
- if (count > recvd) {
- dprintk("NFS: server cheating in read reply: "
- "count %u > recvd %u\n", count, recvd);
- count = recvd;
- res->eof = 0;
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ if (*p == xdr_zero) {
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ if (*p == xdr_zero)
+ return -EAGAIN;
+ entry->eof = 1;
+ return -EBADCOOKIE;
}
- if (count < res->count)
- res->count = count;
+ error = decode_fileid3(xdr, &entry->ino);
+ if (unlikely(error))
+ return error;
- return count;
-}
+ error = decode_inline_filename3(xdr, &entry->name, &entry->len);
+ if (unlikely(error))
+ return error;
-/*
- * Decode WRITE response
- */
-static int
-nfs3_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res)
-{
- int status;
+ entry->prev_cookie = entry->cookie;
+ error = decode_cookie3(xdr, &entry->cookie);
+ if (unlikely(error))
+ return error;
- status = ntohl(*p++);
- p = xdr_decode_wcc_data(p, res->fattr);
+ entry->d_type = DT_UNKNOWN;
- if (status != 0)
- return nfs_stat_to_errno(status);
+ if (plus) {
+ entry->fattr->valid = 0;
+ error = decode_post_op_attr(xdr, entry->fattr);
+ if (unlikely(error))
+ return error;
+ if (entry->fattr->valid & NFS_ATTR_FATTR_V3)
+ entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
- res->count = ntohl(*p++);
- res->verf->committed = (enum nfs3_stable_how)ntohl(*p++);
- res->verf->verifier[0] = *p++;
- res->verf->verifier[1] = *p++;
+ /* In fact, a post_op_fh3: */
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ if (*p != xdr_zero) {
+ error = decode_nfs_fh3(xdr, entry->fh);
+ if (unlikely(error)) {
+ if (error == -E2BIG)
+ goto out_truncated;
+ return error;
+ }
+ } else
+ zero_nfs_fh3(entry->fh);
+ }
- return res->count;
-}
+ return 0;
-/*
- * Decode a CREATE response
- */
-static int
-nfs3_xdr_createres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res)
-{
- int status;
-
- status = ntohl(*p++);
- if (status == 0) {
- if (*p++) {
- if (!(p = xdr_decode_fhandle(p, res->fh)))
- return -errno_NFSERR_IO;
- p = xdr_decode_post_op_attr(p, res->fattr);
- } else {
- memset(res->fh, 0, sizeof(*res->fh));
- /* Do decode post_op_attr but set it to NULL */
- p = xdr_decode_post_op_attr(p, res->fattr);
- res->fattr->valid = 0;
- }
- } else {
- status = nfs_stat_to_errno(status);
- }
- p = xdr_decode_wcc_data(p, res->dir_attr);
- return status;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EAGAIN;
+out_truncated:
+ dprintk("NFS: directory entry contains invalid file handle\n");
+ *entry = old;
+ return -EAGAIN;
}
/*
- * Decode RENAME reply
+ * 3.3.16 READDIR3res
+ *
+ * struct dirlist3 {
+ * entry3 *entries;
+ * bool eof;
+ * };
+ *
+ * struct READDIR3resok {
+ * post_op_attr dir_attributes;
+ * cookieverf3 cookieverf;
+ * dirlist3 reply;
+ * };
+ *
+ * struct READDIR3resfail {
+ * post_op_attr dir_attributes;
+ * };
+ *
+ * union READDIR3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * READDIR3resok resok;
+ * default:
+ * READDIR3resfail resfail;
+ * };
+ *
+ * Read the directory contents into the page cache, but otherwise
+ * don't touch them. The actual decoding is done by nfs3_decode_entry()
+ * during subsequent nfs_readdir() calls.
*/
-static int
-nfs3_xdr_renameres(struct rpc_rqst *req, __be32 *p, struct nfs_renameres *res)
+static int decode_dirlist3(struct xdr_stream *xdr)
{
- int status;
+ u32 recvd, pglen;
+ size_t hdrlen;
- if ((status = ntohl(*p++)) != 0)
- status = nfs_stat_to_errno(status);
- p = xdr_decode_wcc_data(p, res->old_fattr);
- p = xdr_decode_wcc_data(p, res->new_fattr);
- return status;
+ pglen = xdr->buf->page_len;
+ hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
+ recvd = xdr->buf->len - hdrlen;
+ if (unlikely(pglen > recvd))
+ goto out_cheating;
+out:
+ xdr_read_pages(xdr, pglen);
+ return pglen;
+out_cheating:
+ dprintk("NFS: server cheating in readdir result: "
+ "pglen %u > recvd %u\n", pglen, recvd);
+ pglen = recvd;
+ goto out;
}
-/*
- * Decode LINK reply
- */
-static int
-nfs3_xdr_linkres(struct rpc_rqst *req, __be32 *p, struct nfs3_linkres *res)
+static int decode_readdir3resok(struct xdr_stream *xdr,
+ struct nfs3_readdirres *result)
{
- int status;
+ int error;
+
+ error = decode_post_op_attr(xdr, result->dir_attr);
+ if (unlikely(error))
+ goto out;
+ /* XXX: do we need to check if result->verf != NULL ? */
+ error = decode_cookieverf3(xdr, result->verf);
+ if (unlikely(error))
+ goto out;
+ error = decode_dirlist3(xdr);
+out:
+ return error;
+}
- if ((status = ntohl(*p++)) != 0)
- status = nfs_stat_to_errno(status);
- p = xdr_decode_post_op_attr(p, res->fattr);
- p = xdr_decode_wcc_data(p, res->dir_attr);
- return status;
+static int nfs3_xdr_dec_readdir3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs3_readdirres *result)
+{
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_default;
+ error = decode_readdir3resok(xdr, result);
+out:
+ return error;
+out_default:
+ error = decode_post_op_attr(xdr, result->dir_attr);
+ if (unlikely(error))
+ goto out;
+ return nfs_stat_to_errno(status);
}
/*
- * Decode FSSTAT reply
+ * 3.3.18 FSSTAT3res
+ *
+ * struct FSSTAT3resok {
+ * post_op_attr obj_attributes;
+ * size3 tbytes;
+ * size3 fbytes;
+ * size3 abytes;
+ * size3 tfiles;
+ * size3 ffiles;
+ * size3 afiles;
+ * uint32 invarsec;
+ * };
+ *
+ * struct FSSTAT3resfail {
+ * post_op_attr obj_attributes;
+ * };
+ *
+ * union FSSTAT3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * FSSTAT3resok resok;
+ * default:
+ * FSSTAT3resfail resfail;
+ * };
*/
-static int
-nfs3_xdr_fsstatres(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *res)
+static int decode_fsstat3resok(struct xdr_stream *xdr,
+ struct nfs_fsstat *result)
{
- int status;
-
- status = ntohl(*p++);
-
- p = xdr_decode_post_op_attr(p, res->fattr);
- if (status != 0)
- return nfs_stat_to_errno(status);
-
- p = xdr_decode_hyper(p, &res->tbytes);
- p = xdr_decode_hyper(p, &res->fbytes);
- p = xdr_decode_hyper(p, &res->abytes);
- p = xdr_decode_hyper(p, &res->tfiles);
- p = xdr_decode_hyper(p, &res->ffiles);
- p = xdr_decode_hyper(p, &res->afiles);
+ __be32 *p;
+ p = xdr_inline_decode(xdr, 8 * 6 + 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ p = xdr_decode_size3(p, &result->tbytes);
+ p = xdr_decode_size3(p, &result->fbytes);
+ p = xdr_decode_size3(p, &result->abytes);
+ p = xdr_decode_size3(p, &result->tfiles);
+ p = xdr_decode_size3(p, &result->ffiles);
+ xdr_decode_size3(p, &result->afiles);
/* ignore invarsec */
return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static int nfs3_xdr_dec_fsstat3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_fsstat *result)
+{
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+ error = decode_fsstat3resok(xdr, result);
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
}
/*
- * Decode FSINFO reply
+ * 3.3.19 FSINFO3res
+ *
+ * struct FSINFO3resok {
+ * post_op_attr obj_attributes;
+ * uint32 rtmax;
+ * uint32 rtpref;
+ * uint32 rtmult;
+ * uint32 wtmax;
+ * uint32 wtpref;
+ * uint32 wtmult;
+ * uint32 dtpref;
+ * size3 maxfilesize;
+ * nfstime3 time_delta;
+ * uint32 properties;
+ * };
+ *
+ * struct FSINFO3resfail {
+ * post_op_attr obj_attributes;
+ * };
+ *
+ * union FSINFO3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * FSINFO3resok resok;
+ * default:
+ * FSINFO3resfail resfail;
+ * };
*/
-static int
-nfs3_xdr_fsinfores(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *res)
+static int decode_fsinfo3resok(struct xdr_stream *xdr,
+ struct nfs_fsinfo *result)
{
- int status;
-
- status = ntohl(*p++);
-
- p = xdr_decode_post_op_attr(p, res->fattr);
- if (status != 0)
- return nfs_stat_to_errno(status);
+ __be32 *p;
- res->rtmax = ntohl(*p++);
- res->rtpref = ntohl(*p++);
- res->rtmult = ntohl(*p++);
- res->wtmax = ntohl(*p++);
- res->wtpref = ntohl(*p++);
- res->wtmult = ntohl(*p++);
- res->dtpref = ntohl(*p++);
- p = xdr_decode_hyper(p, &res->maxfilesize);
- p = xdr_decode_time3(p, &res->time_delta);
+ p = xdr_inline_decode(xdr, 4 * 7 + 8 + 8 + 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ result->rtmax = be32_to_cpup(p++);
+ result->rtpref = be32_to_cpup(p++);
+ result->rtmult = be32_to_cpup(p++);
+ result->wtmax = be32_to_cpup(p++);
+ result->wtpref = be32_to_cpup(p++);
+ result->wtmult = be32_to_cpup(p++);
+ result->dtpref = be32_to_cpup(p++);
+ p = xdr_decode_size3(p, &result->maxfilesize);
+ xdr_decode_nfstime3(p, &result->time_delta);
/* ignore properties */
- res->lease_time = 0;
+ result->lease_time = 0;
return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static int nfs3_xdr_dec_fsinfo3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_fsinfo *result)
+{
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+ error = decode_fsinfo3resok(xdr, result);
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
}
/*
- * Decode PATHCONF reply
+ * 3.3.20 PATHCONF3res
+ *
+ * struct PATHCONF3resok {
+ * post_op_attr obj_attributes;
+ * uint32 linkmax;
+ * uint32 name_max;
+ * bool no_trunc;
+ * bool chown_restricted;
+ * bool case_insensitive;
+ * bool case_preserving;
+ * };
+ *
+ * struct PATHCONF3resfail {
+ * post_op_attr obj_attributes;
+ * };
+ *
+ * union PATHCONF3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * PATHCONF3resok resok;
+ * default:
+ * PATHCONF3resfail resfail;
+ * };
*/
-static int
-nfs3_xdr_pathconfres(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *res)
+static int decode_pathconf3resok(struct xdr_stream *xdr,
+ struct nfs_pathconf *result)
{
- int status;
-
- status = ntohl(*p++);
-
- p = xdr_decode_post_op_attr(p, res->fattr);
- if (status != 0)
- return nfs_stat_to_errno(status);
- res->max_link = ntohl(*p++);
- res->max_namelen = ntohl(*p++);
+ __be32 *p;
+ p = xdr_inline_decode(xdr, 4 * 6);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ result->max_link = be32_to_cpup(p++);
+ result->max_namelen = be32_to_cpup(p);
/* ignore remaining fields */
return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static int nfs3_xdr_dec_pathconf3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_pathconf *result)
+{
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+ error = decode_pathconf3resok(xdr, result);
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
}
/*
- * Decode COMMIT reply
+ * 3.3.21 COMMIT3res
+ *
+ * struct COMMIT3resok {
+ * wcc_data file_wcc;
+ * writeverf3 verf;
+ * };
+ *
+ * struct COMMIT3resfail {
+ * wcc_data file_wcc;
+ * };
+ *
+ * union COMMIT3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * COMMIT3resok resok;
+ * default:
+ * COMMIT3resfail resfail;
+ * };
*/
-static int
-nfs3_xdr_commitres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res)
+static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_writeres *result)
{
- int status;
-
- status = ntohl(*p++);
- p = xdr_decode_wcc_data(p, res->fattr);
- if (status != 0)
- return nfs_stat_to_errno(status);
-
- res->verf->verifier[0] = *p++;
- res->verf->verifier[1] = *p++;
- return 0;
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_wcc_data(xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+ error = decode_writeverf3(xdr, result->verf->verifier);
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
}
#ifdef CONFIG_NFS_V3_ACL
-/*
- * Decode GETACL reply
- */
-static int
-nfs3_xdr_getaclres(struct rpc_rqst *req, __be32 *p,
- struct nfs3_getaclres *res)
+
+static inline int decode_getacl3resok(struct xdr_stream *xdr,
+ struct nfs3_getaclres *result)
{
- struct xdr_buf *buf = &req->rq_rcv_buf;
- int status = ntohl(*p++);
struct posix_acl **acl;
unsigned int *aclcnt;
- int err, base;
-
- if (status != 0)
- return nfs_stat_to_errno(status);
- p = xdr_decode_post_op_attr(p, res->fattr);
- res->mask = ntohl(*p++);
- if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT))
- return -EINVAL;
- base = (char *)p - (char *)req->rq_rcv_buf.head->iov_base;
-
- acl = (res->mask & NFS_ACL) ? &res->acl_access : NULL;
- aclcnt = (res->mask & NFS_ACLCNT) ? &res->acl_access_count : NULL;
- err = nfsacl_decode(buf, base, aclcnt, acl);
-
- acl = (res->mask & NFS_DFACL) ? &res->acl_default : NULL;
- aclcnt = (res->mask & NFS_DFACLCNT) ? &res->acl_default_count : NULL;
- if (err > 0)
- err = nfsacl_decode(buf, base + err, aclcnt, acl);
- return (err > 0) ? 0 : err;
+ size_t hdrlen;
+ int error;
+
+ error = decode_post_op_attr(xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ error = decode_uint32(xdr, &result->mask);
+ if (unlikely(error))
+ goto out;
+ error = -EINVAL;
+ if (result->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT))
+ goto out;
+
+ hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
+
+ acl = NULL;
+ if (result->mask & NFS_ACL)
+ acl = &result->acl_access;
+ aclcnt = NULL;
+ if (result->mask & NFS_ACLCNT)
+ aclcnt = &result->acl_access_count;
+ error = nfsacl_decode(xdr->buf, hdrlen, aclcnt, acl);
+ if (unlikely(error <= 0))
+ goto out;
+
+ acl = NULL;
+ if (result->mask & NFS_DFACL)
+ acl = &result->acl_default;
+ aclcnt = NULL;
+ if (result->mask & NFS_DFACLCNT)
+ aclcnt = &result->acl_default_count;
+ error = nfsacl_decode(xdr->buf, hdrlen + error, aclcnt, acl);
+ if (unlikely(error <= 0))
+ return error;
+ error = 0;
+out:
+ return error;
}
-/*
- * Decode setacl reply.
- */
-static int
-nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
+static int nfs3_xdr_dec_getacl3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs3_getaclres *result)
{
- int status = ntohl(*p++);
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_default;
+ error = decode_getacl3resok(xdr, result);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
+}
- if (status)
- return nfs_stat_to_errno(status);
- xdr_decode_post_op_attr(p, fattr);
- return 0;
+static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_fattr *result)
+{
+ enum nfs_stat status;
+ int error;
+
+ error = decode_nfsstat3(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_default;
+ error = decode_post_op_attr(xdr, result);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
}
+
#endif /* CONFIG_NFS_V3_ACL */
#define PROC(proc, argtype, restype, timer) \
[NFS3PROC_##proc] = { \
.p_proc = NFS3PROC_##proc, \
- .p_encode = (kxdrproc_t) nfs3_xdr_##argtype, \
- .p_decode = (kxdrproc_t) nfs3_xdr_##restype, \
- .p_arglen = NFS3_##argtype##_sz, \
- .p_replen = NFS3_##restype##_sz, \
+ .p_encode = (kxdreproc_t)nfs3_xdr_enc_##argtype##3args, \
+ .p_decode = (kxdrdproc_t)nfs3_xdr_dec_##restype##3res, \
+ .p_arglen = NFS3_##argtype##args_sz, \
+ .p_replen = NFS3_##restype##res_sz, \
.p_timer = timer, \
.p_statidx = NFS3PROC_##proc, \
.p_name = #proc, \
}
struct rpc_procinfo nfs3_procedures[] = {
- PROC(GETATTR, fhandle, attrstat, 1),
- PROC(SETATTR, sattrargs, wccstat, 0),
- PROC(LOOKUP, diropargs, lookupres, 2),
- PROC(ACCESS, accessargs, accessres, 1),
- PROC(READLINK, readlinkargs, readlinkres, 3),
- PROC(READ, readargs, readres, 3),
- PROC(WRITE, writeargs, writeres, 4),
- PROC(CREATE, createargs, createres, 0),
- PROC(MKDIR, mkdirargs, createres, 0),
- PROC(SYMLINK, symlinkargs, createres, 0),
- PROC(MKNOD, mknodargs, createres, 0),
- PROC(REMOVE, removeargs, removeres, 0),
- PROC(RMDIR, diropargs, wccstat, 0),
- PROC(RENAME, renameargs, renameres, 0),
- PROC(LINK, linkargs, linkres, 0),
- PROC(READDIR, readdirargs, readdirres, 3),
- PROC(READDIRPLUS, readdirargs, readdirres, 3),
- PROC(FSSTAT, fhandle, fsstatres, 0),
- PROC(FSINFO, fhandle, fsinfores, 0),
- PROC(PATHCONF, fhandle, pathconfres, 0),
- PROC(COMMIT, commitargs, commitres, 5),
+ PROC(GETATTR, getattr, getattr, 1),
+ PROC(SETATTR, setattr, setattr, 0),
+ PROC(LOOKUP, lookup, lookup, 2),
+ PROC(ACCESS, access, access, 1),
+ PROC(READLINK, readlink, readlink, 3),
+ PROC(READ, read, read, 3),
+ PROC(WRITE, write, write, 4),
+ PROC(CREATE, create, create, 0),
+ PROC(MKDIR, mkdir, create, 0),
+ PROC(SYMLINK, symlink, create, 0),
+ PROC(MKNOD, mknod, create, 0),
+ PROC(REMOVE, remove, remove, 0),
+ PROC(RMDIR, lookup, setattr, 0),
+ PROC(RENAME, rename, rename, 0),
+ PROC(LINK, link, link, 0),
+ PROC(READDIR, readdir, readdir, 3),
+ PROC(READDIRPLUS, readdirplus, readdir, 3),
+ PROC(FSSTAT, getattr, fsstat, 0),
+ PROC(FSINFO, getattr, fsinfo, 0),
+ PROC(PATHCONF, getattr, pathconf, 0),
+ PROC(COMMIT, commit, commit, 5),
};
struct rpc_version nfs_version3 = {
@@ -1185,8 +2468,8 @@ struct rpc_version nfs_version3 = {
static struct rpc_procinfo nfs3_acl_procedures[] = {
[ACLPROC3_GETACL] = {
.p_proc = ACLPROC3_GETACL,
- .p_encode = (kxdrproc_t) nfs3_xdr_getaclargs,
- .p_decode = (kxdrproc_t) nfs3_xdr_getaclres,
+ .p_encode = (kxdreproc_t)nfs3_xdr_enc_getacl3args,
+ .p_decode = (kxdrdproc_t)nfs3_xdr_dec_getacl3res,
.p_arglen = ACL3_getaclargs_sz,
.p_replen = ACL3_getaclres_sz,
.p_timer = 1,
@@ -1194,8 +2477,8 @@ static struct rpc_procinfo nfs3_acl_procedures[] = {
},
[ACLPROC3_SETACL] = {
.p_proc = ACLPROC3_SETACL,
- .p_encode = (kxdrproc_t) nfs3_xdr_setaclargs,
- .p_decode = (kxdrproc_t) nfs3_xdr_setaclres,
+ .p_encode = (kxdreproc_t)nfs3_xdr_enc_setacl3args,
+ .p_decode = (kxdrdproc_t)nfs3_xdr_dec_setacl3res,
.p_arglen = ACL3_setaclargs_sz,
.p_replen = ACL3_setaclres_sz,
.p_timer = 0,
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 9fa496387fd..7a747407314 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -44,6 +44,7 @@ enum nfs4_client_state {
NFS4CLNT_RECLAIM_REBOOT,
NFS4CLNT_RECLAIM_NOGRACE,
NFS4CLNT_DELEGRETURN,
+ NFS4CLNT_LAYOUTRECALL,
NFS4CLNT_SESSION_RESET,
NFS4CLNT_RECALL_SLOT,
};
@@ -109,7 +110,7 @@ struct nfs_unique_id {
struct nfs4_state_owner {
struct nfs_unique_id so_owner_id;
struct nfs_server *so_server;
- struct rb_node so_client_node;
+ struct rb_node so_server_node;
struct rpc_cred *so_cred; /* Associated cred */
@@ -227,12 +228,6 @@ struct nfs4_state_maintenance_ops {
extern const struct dentry_operations nfs4_dentry_operations;
extern const struct inode_operations nfs4_dir_inode_operations;
-/* inode.c */
-extern ssize_t nfs4_getxattr(struct dentry *, const char *, void *, size_t);
-extern int nfs4_setxattr(struct dentry *, const char *, const void *, size_t, int);
-extern ssize_t nfs4_listxattr(struct dentry *, char *, size_t);
-
-
/* nfs4proc.c */
extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *);
extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *);
@@ -241,11 +236,12 @@ extern int nfs4_proc_async_renew(struct nfs_client *, struct rpc_cred *);
extern int nfs4_proc_renew(struct nfs_client *, struct rpc_cred *);
extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *);
extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *);
-extern int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait);
+extern int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc);
extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle);
extern int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
struct nfs4_fs_locations *fs_locations, struct page *page);
extern void nfs4_release_lockowner(const struct nfs4_lock_state *);
+extern const struct xattr_handler *nfs4_xattr_handlers[];
#if defined(CONFIG_NFS_V4_1)
static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server)
@@ -331,7 +327,6 @@ extern void nfs_free_seqid(struct nfs_seqid *seqid);
extern const nfs4_stateid zero_stateid;
/* nfs4xdr.c */
-extern __be32 *nfs4_decode_dirent(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int);
extern struct rpc_procinfo nfs4_procedures[];
struct nfs4_mount_data;
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index 2e92f0d8d65..23f930caf1e 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -82,7 +82,7 @@ filelayout_check_layout(struct pnfs_layout_hdr *lo,
{
struct nfs4_file_layout_dsaddr *dsaddr;
int status = -EINVAL;
- struct nfs_server *nfss = NFS_SERVER(lo->inode);
+ struct nfs_server *nfss = NFS_SERVER(lo->plh_inode);
dprintk("--> %s\n", __func__);
@@ -101,7 +101,7 @@ filelayout_check_layout(struct pnfs_layout_hdr *lo,
/* find and reference the deviceid */
dsaddr = nfs4_fl_find_get_deviceid(nfss->nfs_client, id);
if (dsaddr == NULL) {
- dsaddr = get_device_info(lo->inode, id);
+ dsaddr = get_device_info(lo->plh_inode, id);
if (dsaddr == NULL)
goto out;
}
@@ -243,7 +243,7 @@ filelayout_alloc_lseg(struct pnfs_layout_hdr *layoutid,
static void
filelayout_free_lseg(struct pnfs_layout_segment *lseg)
{
- struct nfs_server *nfss = NFS_SERVER(lseg->layout->inode);
+ struct nfs_server *nfss = NFS_SERVER(lseg->pls_layout->plh_inode);
struct nfs4_filelayout_segment *fl = FILELAYOUT_LSEG(lseg);
dprintk("--> %s\n", __func__);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 4435e5e1f90..9d992b0346e 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -49,6 +49,7 @@
#include <linux/mount.h>
#include <linux/module.h>
#include <linux/sunrpc/bc_xprt.h>
+#include <linux/xattr.h>
#include "nfs4_fs.h"
#include "delegation.h"
@@ -355,9 +356,9 @@ nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot)
}
/*
- * Signal state manager thread if session is drained
+ * Signal state manager thread if session fore channel is drained
*/
-static void nfs41_check_drain_session_complete(struct nfs4_session *ses)
+static void nfs4_check_drain_fc_complete(struct nfs4_session *ses)
{
struct rpc_task *task;
@@ -371,8 +372,20 @@ static void nfs41_check_drain_session_complete(struct nfs4_session *ses)
if (ses->fc_slot_table.highest_used_slotid != -1)
return;
- dprintk("%s COMPLETE: Session Drained\n", __func__);
- complete(&ses->complete);
+ dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__);
+ complete(&ses->fc_slot_table.complete);
+}
+
+/*
+ * Signal state manager thread if session back channel is drained
+ */
+void nfs4_check_drain_bc_complete(struct nfs4_session *ses)
+{
+ if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) ||
+ ses->bc_slot_table.highest_used_slotid != -1)
+ return;
+ dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__);
+ complete(&ses->bc_slot_table.complete);
}
static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res)
@@ -389,7 +402,7 @@ static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res)
spin_lock(&tbl->slot_tbl_lock);
nfs4_free_slot(tbl, res->sr_slot);
- nfs41_check_drain_session_complete(res->sr_session);
+ nfs4_check_drain_fc_complete(res->sr_session);
spin_unlock(&tbl->slot_tbl_lock);
res->sr_slot = NULL;
}
@@ -1826,6 +1839,8 @@ struct nfs4_closedata {
struct nfs_closeres res;
struct nfs_fattr fattr;
unsigned long timestamp;
+ bool roc;
+ u32 roc_barrier;
};
static void nfs4_free_closedata(void *data)
@@ -1833,6 +1848,8 @@ static void nfs4_free_closedata(void *data)
struct nfs4_closedata *calldata = data;
struct nfs4_state_owner *sp = calldata->state->owner;
+ if (calldata->roc)
+ pnfs_roc_release(calldata->state->inode);
nfs4_put_open_state(calldata->state);
nfs_free_seqid(calldata->arg.seqid);
nfs4_put_state_owner(sp);
@@ -1865,6 +1882,9 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
*/
switch (task->tk_status) {
case 0:
+ if (calldata->roc)
+ pnfs_roc_set_barrier(state->inode,
+ calldata->roc_barrier);
nfs_set_open_stateid(state, &calldata->res.stateid, 0);
renew_lease(server, calldata->timestamp);
nfs4_close_clear_stateid_flags(state,
@@ -1917,8 +1937,15 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
return;
}
- if (calldata->arg.fmode == 0)
+ if (calldata->arg.fmode == 0) {
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];
+ if (calldata->roc &&
+ pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) {
+ rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq,
+ task, NULL);
+ return;
+ }
+ }
nfs_fattr_init(calldata->res.fattr);
calldata->timestamp = jiffies;
@@ -1946,7 +1973,7 @@ static const struct rpc_call_ops nfs4_close_ops = {
*
* NOTE: Caller must be holding the sp->so_owner semaphore!
*/
-int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait)
+int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc)
{
struct nfs_server *server = NFS_SERVER(state->inode);
struct nfs4_closedata *calldata;
@@ -1981,11 +2008,12 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, i
calldata->res.fattr = &calldata->fattr;
calldata->res.seqid = calldata->arg.seqid;
calldata->res.server = server;
+ calldata->roc = roc;
path_get(path);
calldata->path = *path;
- msg.rpc_argp = &calldata->arg,
- msg.rpc_resp = &calldata->res,
+ msg.rpc_argp = &calldata->arg;
+ msg.rpc_resp = &calldata->res;
task_setup_data.callback_data = calldata;
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
@@ -1998,6 +2026,8 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, i
out_free_calldata:
kfree(calldata);
out:
+ if (roc)
+ pnfs_roc_release(state->inode);
nfs4_put_open_state(state);
nfs4_put_state_owner(sp);
return status;
@@ -2486,6 +2516,7 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
path = &ctx->path;
fmode = ctx->mode;
}
+ sattr->ia_mode &= ~current_umask();
state = nfs4_do_open(dir, path, fmode, flags, sattr, cred);
d_drop(dentry);
if (IS_ERR(state)) {
@@ -2816,6 +2847,8 @@ static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
{
struct nfs4_exception exception = { };
int err;
+
+ sattr->ia_mode &= ~current_umask();
do {
err = nfs4_handle_exception(NFS_SERVER(dir),
_nfs4_proc_mkdir(dir, dentry, sattr),
@@ -2916,6 +2949,8 @@ static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
{
struct nfs4_exception exception = { };
int err;
+
+ sattr->ia_mode &= ~current_umask();
do {
err = nfs4_handle_exception(NFS_SERVER(dir),
_nfs4_proc_mknod(dir, dentry, sattr, rdev),
@@ -3478,6 +3513,7 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
struct nfs4_setclientid setclientid = {
.sc_verifier = &sc_verifier,
.sc_prog = program,
+ .sc_cb_ident = clp->cl_cb_ident,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID],
@@ -3517,7 +3553,7 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
if (signalled())
break;
if (loop++ & 1)
- ssleep(clp->cl_lease_time + 1);
+ ssleep(clp->cl_lease_time / HZ + 1);
else
if (++clp->cl_id_uniquifier == 0)
break;
@@ -3663,8 +3699,8 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co
data->rpc_status = 0;
task_setup_data.callback_data = data;
- msg.rpc_argp = &data->args,
- msg.rpc_resp = &data->res,
+ msg.rpc_argp = &data->args;
+ msg.rpc_resp = &data->res;
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
@@ -3743,6 +3779,7 @@ static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock
goto out;
lsp = request->fl_u.nfs4_fl.owner;
arg.lock_owner.id = lsp->ls_id.id;
+ arg.lock_owner.s_dev = server->s_dev;
status = nfs4_call_sync(server, &msg, &arg, &res, 1);
switch (status) {
case 0:
@@ -3908,8 +3945,8 @@ static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
return ERR_PTR(-ENOMEM);
}
- msg.rpc_argp = &data->arg,
- msg.rpc_resp = &data->res,
+ msg.rpc_argp = &data->arg;
+ msg.rpc_resp = &data->res;
task_setup_data.callback_data = data;
return rpc_run_task(&task_setup_data);
}
@@ -3988,6 +4025,7 @@ static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
p->arg.lock_stateid = &lsp->ls_stateid;
p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
p->arg.lock_owner.id = lsp->ls_id.id;
+ p->arg.lock_owner.s_dev = server->s_dev;
p->res.lock_seqid = p->arg.lock_seqid;
p->lsp = lsp;
p->server = server;
@@ -4145,8 +4183,8 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f
data->arg.reclaim = NFS_LOCK_RECLAIM;
task_setup_data.callback_ops = &nfs4_recover_lock_ops;
}
- msg.rpc_argp = &data->arg,
- msg.rpc_resp = &data->res,
+ msg.rpc_argp = &data->arg;
+ msg.rpc_resp = &data->res;
task_setup_data.callback_data = data;
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
@@ -4392,48 +4430,43 @@ void nfs4_release_lockowner(const struct nfs4_lock_state *lsp)
return;
args->lock_owner.clientid = server->nfs_client->cl_clientid;
args->lock_owner.id = lsp->ls_id.id;
+ args->lock_owner.s_dev = server->s_dev;
msg.rpc_argp = args;
rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args);
}
#define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
-int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf,
- size_t buflen, int flags)
+static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key,
+ const void *buf, size_t buflen,
+ int flags, int type)
{
- struct inode *inode = dentry->d_inode;
-
- if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0)
- return -EOPNOTSUPP;
+ if (strcmp(key, "") != 0)
+ return -EINVAL;
- return nfs4_proc_set_acl(inode, buf, buflen);
+ return nfs4_proc_set_acl(dentry->d_inode, buf, buflen);
}
-/* The getxattr man page suggests returning -ENODATA for unknown attributes,
- * and that's what we'll do for e.g. user attributes that haven't been set.
- * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
- * attributes in kernel-managed attribute namespaces. */
-ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf,
- size_t buflen)
+static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key,
+ void *buf, size_t buflen, int type)
{
- struct inode *inode = dentry->d_inode;
-
- if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0)
- return -EOPNOTSUPP;
+ if (strcmp(key, "") != 0)
+ return -EINVAL;
- return nfs4_proc_get_acl(inode, buf, buflen);
+ return nfs4_proc_get_acl(dentry->d_inode, buf, buflen);
}
-ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen)
+static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list,
+ size_t list_len, const char *name,
+ size_t name_len, int type)
{
- size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1;
+ size_t len = sizeof(XATTR_NAME_NFSV4_ACL);
if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode)))
return 0;
- if (buf && buflen < len)
- return -ERANGE;
- if (buf)
- memcpy(buf, XATTR_NAME_NFSV4_ACL, len);
+
+ if (list && len <= list_len)
+ memcpy(list, XATTR_NAME_NFSV4_ACL, len);
return len;
}
@@ -4486,6 +4519,25 @@ int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
#ifdef CONFIG_NFS_V4_1
/*
+ * Check the exchange flags returned by the server for invalid flags, having
+ * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
+ * DS flags set.
+ */
+static int nfs4_check_cl_exchange_flags(u32 flags)
+{
+ if (flags & ~EXCHGID4_FLAG_MASK_R)
+ goto out_inval;
+ if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) &&
+ (flags & EXCHGID4_FLAG_USE_NON_PNFS))
+ goto out_inval;
+ if (!(flags & (EXCHGID4_FLAG_MASK_PNFS)))
+ goto out_inval;
+ return NFS_OK;
+out_inval:
+ return -NFS4ERR_INVAL;
+}
+
+/*
* nfs4_proc_exchange_id()
*
* Since the clientid has expired, all compounds using sessions
@@ -4498,7 +4550,7 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
nfs4_verifier verifier;
struct nfs41_exchange_id_args args = {
.client = clp,
- .flags = clp->cl_exchange_flags,
+ .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER,
};
struct nfs41_exchange_id_res res = {
.client = clp,
@@ -4515,9 +4567,6 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
dprintk("--> %s\n", __func__);
BUG_ON(clp == NULL);
- /* Remove server-only flags */
- args.flags &= ~EXCHGID4_FLAG_CONFIRMED_R;
-
p = (u32 *)verifier.data;
*p++ = htonl((u32)clp->cl_boot_time.tv_sec);
*p = htonl((u32)clp->cl_boot_time.tv_nsec);
@@ -4543,6 +4592,7 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
break;
}
+ status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags);
dprintk("<-- %s status= %d\n", __func__, status);
return status;
}
@@ -4776,17 +4826,17 @@ struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp)
if (!session)
return NULL;
- init_completion(&session->complete);
-
tbl = &session->fc_slot_table;
tbl->highest_used_slotid = -1;
spin_lock_init(&tbl->slot_tbl_lock);
rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table");
+ init_completion(&tbl->complete);
tbl = &session->bc_slot_table;
tbl->highest_used_slotid = -1;
spin_lock_init(&tbl->slot_tbl_lock);
rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table");
+ init_completion(&tbl->complete);
session->session_state = 1<<NFS4_SESSION_INITING;
@@ -5280,13 +5330,23 @@ static void
nfs4_layoutget_prepare(struct rpc_task *task, void *calldata)
{
struct nfs4_layoutget *lgp = calldata;
- struct inode *ino = lgp->args.inode;
- struct nfs_server *server = NFS_SERVER(ino);
+ struct nfs_server *server = NFS_SERVER(lgp->args.inode);
dprintk("--> %s\n", __func__);
+ /* Note the is a race here, where a CB_LAYOUTRECALL can come in
+ * right now covering the LAYOUTGET we are about to send.
+ * However, that is not so catastrophic, and there seems
+ * to be no way to prevent it completely.
+ */
if (nfs4_setup_sequence(server, &lgp->args.seq_args,
&lgp->res.seq_res, 0, task))
return;
+ if (pnfs_choose_layoutget_stateid(&lgp->args.stateid,
+ NFS_I(lgp->args.inode)->layout,
+ lgp->args.ctx->state)) {
+ rpc_exit(task, NFS4_OK);
+ return;
+ }
rpc_call_start(task);
}
@@ -5313,7 +5373,6 @@ static void nfs4_layoutget_done(struct rpc_task *task, void *calldata)
return;
}
}
- lgp->status = task->tk_status;
dprintk("<-- %s\n", __func__);
}
@@ -5322,7 +5381,6 @@ static void nfs4_layoutget_release(void *calldata)
struct nfs4_layoutget *lgp = calldata;
dprintk("--> %s\n", __func__);
- put_layout_hdr(lgp->args.inode);
if (lgp->res.layout.buf != NULL)
free_page((unsigned long) lgp->res.layout.buf);
put_nfs_open_context(lgp->args.ctx);
@@ -5367,13 +5425,10 @@ int nfs4_proc_layoutget(struct nfs4_layoutget *lgp)
if (IS_ERR(task))
return PTR_ERR(task);
status = nfs4_wait_for_completion_rpc_task(task);
- if (status != 0)
- goto out;
- status = lgp->status;
- if (status != 0)
- goto out;
- status = pnfs_layout_process(lgp);
-out:
+ if (status == 0)
+ status = task->tk_status;
+ if (status == 0)
+ status = pnfs_layout_process(lgp);
rpc_put_task(task);
dprintk("<-- %s status=%d\n", __func__, status);
return status;
@@ -5504,9 +5559,10 @@ static const struct inode_operations nfs4_file_inode_operations = {
.permission = nfs_permission,
.getattr = nfs_getattr,
.setattr = nfs_setattr,
- .getxattr = nfs4_getxattr,
- .setxattr = nfs4_setxattr,
- .listxattr = nfs4_listxattr,
+ .getxattr = generic_getxattr,
+ .setxattr = generic_setxattr,
+ .listxattr = generic_listxattr,
+ .removexattr = generic_removexattr,
};
const struct nfs_rpc_ops nfs_v4_clientops = {
@@ -5551,6 +5607,18 @@ const struct nfs_rpc_ops nfs_v4_clientops = {
.open_context = nfs4_atomic_open,
};
+static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = {
+ .prefix = XATTR_NAME_NFSV4_ACL,
+ .list = nfs4_xattr_list_nfs4_acl,
+ .get = nfs4_xattr_get_nfs4_acl,
+ .set = nfs4_xattr_set_nfs4_acl,
+};
+
+const struct xattr_handler *nfs4_xattr_handlers[] = {
+ &nfs4_xattr_nfs4_acl_handler,
+ NULL
+};
+
/*
* Local variables:
* c-basic-offset: 8
diff --git a/fs/nfs/nfs4renewd.c b/fs/nfs/nfs4renewd.c
index 72b6c580af1..402143d75fc 100644
--- a/fs/nfs/nfs4renewd.c
+++ b/fs/nfs/nfs4renewd.c
@@ -63,9 +63,14 @@ nfs4_renew_state(struct work_struct *work)
ops = clp->cl_mvops->state_renewal_ops;
dprintk("%s: start\n", __func__);
- /* Are there any active superblocks? */
- if (list_empty(&clp->cl_superblocks))
+
+ rcu_read_lock();
+ if (list_empty(&clp->cl_superblocks)) {
+ rcu_read_unlock();
goto out;
+ }
+ rcu_read_unlock();
+
spin_lock(&clp->cl_lock);
lease = clp->cl_lease_time;
last = clp->cl_last_renewal;
@@ -75,7 +80,7 @@ nfs4_renew_state(struct work_struct *work)
cred = ops->get_state_renewal_cred_locked(clp);
spin_unlock(&clp->cl_lock);
if (cred == NULL) {
- if (list_empty(&clp->cl_delegations)) {
+ if (!nfs_delegations_present(clp)) {
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
goto out;
}
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index f575a312673..2336d532cf6 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -105,14 +105,17 @@ static void nfs4_clear_machine_cred(struct nfs_client *clp)
put_rpccred(cred);
}
-struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp)
+static struct rpc_cred *
+nfs4_get_renew_cred_server_locked(struct nfs_server *server)
{
+ struct rpc_cred *cred = NULL;
struct nfs4_state_owner *sp;
struct rb_node *pos;
- struct rpc_cred *cred = NULL;
- for (pos = rb_first(&clp->cl_state_owners); pos != NULL; pos = rb_next(pos)) {
- sp = rb_entry(pos, struct nfs4_state_owner, so_client_node);
+ for (pos = rb_first(&server->state_owners);
+ pos != NULL;
+ pos = rb_next(pos)) {
+ sp = rb_entry(pos, struct nfs4_state_owner, so_server_node);
if (list_empty(&sp->so_states))
continue;
cred = get_rpccred(sp->so_cred);
@@ -121,6 +124,28 @@ struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp)
return cred;
}
+/**
+ * nfs4_get_renew_cred_locked - Acquire credential for a renew operation
+ * @clp: client state handle
+ *
+ * Returns an rpc_cred with reference count bumped, or NULL.
+ * Caller must hold clp->cl_lock.
+ */
+struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp)
+{
+ struct rpc_cred *cred = NULL;
+ struct nfs_server *server;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
+ cred = nfs4_get_renew_cred_server_locked(server);
+ if (cred != NULL)
+ break;
+ }
+ rcu_read_unlock();
+ return cred;
+}
+
#if defined(CONFIG_NFS_V4_1)
static int nfs41_setup_state_renewal(struct nfs_client *clp)
@@ -142,6 +167,11 @@ static int nfs41_setup_state_renewal(struct nfs_client *clp)
return status;
}
+/*
+ * Back channel returns NFS4ERR_DELAY for new requests when
+ * NFS4_SESSION_DRAINING is set so there is no work to be done when draining
+ * is ended.
+ */
static void nfs4_end_drain_session(struct nfs_client *clp)
{
struct nfs4_session *ses = clp->cl_session;
@@ -165,22 +195,32 @@ static void nfs4_end_drain_session(struct nfs_client *clp)
}
}
-static int nfs4_begin_drain_session(struct nfs_client *clp)
+static int nfs4_wait_on_slot_tbl(struct nfs4_slot_table *tbl)
{
- struct nfs4_session *ses = clp->cl_session;
- struct nfs4_slot_table *tbl = &ses->fc_slot_table;
-
spin_lock(&tbl->slot_tbl_lock);
- set_bit(NFS4_SESSION_DRAINING, &ses->session_state);
if (tbl->highest_used_slotid != -1) {
- INIT_COMPLETION(ses->complete);
+ INIT_COMPLETION(tbl->complete);
spin_unlock(&tbl->slot_tbl_lock);
- return wait_for_completion_interruptible(&ses->complete);
+ return wait_for_completion_interruptible(&tbl->complete);
}
spin_unlock(&tbl->slot_tbl_lock);
return 0;
}
+static int nfs4_begin_drain_session(struct nfs_client *clp)
+{
+ struct nfs4_session *ses = clp->cl_session;
+ int ret = 0;
+
+ set_bit(NFS4_SESSION_DRAINING, &ses->session_state);
+ /* back channel */
+ ret = nfs4_wait_on_slot_tbl(&ses->bc_slot_table);
+ if (ret)
+ return ret;
+ /* fore channel */
+ return nfs4_wait_on_slot_tbl(&ses->fc_slot_table);
+}
+
int nfs41_init_clientid(struct nfs_client *clp, struct rpc_cred *cred)
{
int status;
@@ -192,6 +232,12 @@ int nfs41_init_clientid(struct nfs_client *clp, struct rpc_cred *cred)
status = nfs4_proc_create_session(clp);
if (status != 0)
goto out;
+ status = nfs4_set_callback_sessionid(clp);
+ if (status != 0) {
+ printk(KERN_WARNING "Sessionid not set. No callback service\n");
+ nfs_callback_down(1);
+ status = 0;
+ }
nfs41_setup_state_renewal(clp);
nfs_mark_client_ready(clp, NFS_CS_READY);
out:
@@ -210,28 +256,56 @@ struct rpc_cred *nfs4_get_exchange_id_cred(struct nfs_client *clp)
#endif /* CONFIG_NFS_V4_1 */
-struct rpc_cred *nfs4_get_setclientid_cred(struct nfs_client *clp)
+static struct rpc_cred *
+nfs4_get_setclientid_cred_server(struct nfs_server *server)
{
+ struct nfs_client *clp = server->nfs_client;
+ struct rpc_cred *cred = NULL;
struct nfs4_state_owner *sp;
struct rb_node *pos;
+
+ spin_lock(&clp->cl_lock);
+ pos = rb_first(&server->state_owners);
+ if (pos != NULL) {
+ sp = rb_entry(pos, struct nfs4_state_owner, so_server_node);
+ cred = get_rpccred(sp->so_cred);
+ }
+ spin_unlock(&clp->cl_lock);
+ return cred;
+}
+
+/**
+ * nfs4_get_setclientid_cred - Acquire credential for a setclientid operation
+ * @clp: client state handle
+ *
+ * Returns an rpc_cred with reference count bumped, or NULL.
+ */
+struct rpc_cred *nfs4_get_setclientid_cred(struct nfs_client *clp)
+{
+ struct nfs_server *server;
struct rpc_cred *cred;
spin_lock(&clp->cl_lock);
cred = nfs4_get_machine_cred_locked(clp);
+ spin_unlock(&clp->cl_lock);
if (cred != NULL)
goto out;
- pos = rb_first(&clp->cl_state_owners);
- if (pos != NULL) {
- sp = rb_entry(pos, struct nfs4_state_owner, so_client_node);
- cred = get_rpccred(sp->so_cred);
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
+ cred = nfs4_get_setclientid_cred_server(server);
+ if (cred != NULL)
+ break;
}
+ rcu_read_unlock();
+
out:
- spin_unlock(&clp->cl_lock);
return cred;
}
-static void nfs_alloc_unique_id(struct rb_root *root, struct nfs_unique_id *new,
- __u64 minval, int maxbits)
+static void nfs_alloc_unique_id_locked(struct rb_root *root,
+ struct nfs_unique_id *new,
+ __u64 minval, int maxbits)
{
struct rb_node **p, *parent;
struct nfs_unique_id *pos;
@@ -286,16 +360,15 @@ static void nfs_free_unique_id(struct rb_root *root, struct nfs_unique_id *id)
}
static struct nfs4_state_owner *
-nfs4_find_state_owner(struct nfs_server *server, struct rpc_cred *cred)
+nfs4_find_state_owner_locked(struct nfs_server *server, struct rpc_cred *cred)
{
- struct nfs_client *clp = server->nfs_client;
- struct rb_node **p = &clp->cl_state_owners.rb_node,
+ struct rb_node **p = &server->state_owners.rb_node,
*parent = NULL;
struct nfs4_state_owner *sp, *res = NULL;
while (*p != NULL) {
parent = *p;
- sp = rb_entry(parent, struct nfs4_state_owner, so_client_node);
+ sp = rb_entry(parent, struct nfs4_state_owner, so_server_node);
if (server < sp->so_server) {
p = &parent->rb_left;
@@ -319,24 +392,17 @@ nfs4_find_state_owner(struct nfs_server *server, struct rpc_cred *cred)
}
static struct nfs4_state_owner *
-nfs4_insert_state_owner(struct nfs_client *clp, struct nfs4_state_owner *new)
+nfs4_insert_state_owner_locked(struct nfs4_state_owner *new)
{
- struct rb_node **p = &clp->cl_state_owners.rb_node,
+ struct nfs_server *server = new->so_server;
+ struct rb_node **p = &server->state_owners.rb_node,
*parent = NULL;
struct nfs4_state_owner *sp;
while (*p != NULL) {
parent = *p;
- sp = rb_entry(parent, struct nfs4_state_owner, so_client_node);
+ sp = rb_entry(parent, struct nfs4_state_owner, so_server_node);
- if (new->so_server < sp->so_server) {
- p = &parent->rb_left;
- continue;
- }
- if (new->so_server > sp->so_server) {
- p = &parent->rb_right;
- continue;
- }
if (new->so_cred < sp->so_cred)
p = &parent->rb_left;
else if (new->so_cred > sp->so_cred)
@@ -346,18 +412,21 @@ nfs4_insert_state_owner(struct nfs_client *clp, struct nfs4_state_owner *new)
return sp;
}
}
- nfs_alloc_unique_id(&clp->cl_openowner_id, &new->so_owner_id, 1, 64);
- rb_link_node(&new->so_client_node, parent, p);
- rb_insert_color(&new->so_client_node, &clp->cl_state_owners);
+ nfs_alloc_unique_id_locked(&server->openowner_id,
+ &new->so_owner_id, 1, 64);
+ rb_link_node(&new->so_server_node, parent, p);
+ rb_insert_color(&new->so_server_node, &server->state_owners);
return new;
}
static void
-nfs4_remove_state_owner(struct nfs_client *clp, struct nfs4_state_owner *sp)
+nfs4_remove_state_owner_locked(struct nfs4_state_owner *sp)
{
- if (!RB_EMPTY_NODE(&sp->so_client_node))
- rb_erase(&sp->so_client_node, &clp->cl_state_owners);
- nfs_free_unique_id(&clp->cl_openowner_id, &sp->so_owner_id);
+ struct nfs_server *server = sp->so_server;
+
+ if (!RB_EMPTY_NODE(&sp->so_server_node))
+ rb_erase(&sp->so_server_node, &server->state_owners);
+ nfs_free_unique_id(&server->openowner_id, &sp->so_owner_id);
}
/*
@@ -386,23 +455,32 @@ nfs4_alloc_state_owner(void)
static void
nfs4_drop_state_owner(struct nfs4_state_owner *sp)
{
- if (!RB_EMPTY_NODE(&sp->so_client_node)) {
- struct nfs_client *clp = sp->so_server->nfs_client;
+ if (!RB_EMPTY_NODE(&sp->so_server_node)) {
+ struct nfs_server *server = sp->so_server;
+ struct nfs_client *clp = server->nfs_client;
spin_lock(&clp->cl_lock);
- rb_erase(&sp->so_client_node, &clp->cl_state_owners);
- RB_CLEAR_NODE(&sp->so_client_node);
+ rb_erase(&sp->so_server_node, &server->state_owners);
+ RB_CLEAR_NODE(&sp->so_server_node);
spin_unlock(&clp->cl_lock);
}
}
-struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *server, struct rpc_cred *cred)
+/**
+ * nfs4_get_state_owner - Look up a state owner given a credential
+ * @server: nfs_server to search
+ * @cred: RPC credential to match
+ *
+ * Returns a pointer to an instantiated nfs4_state_owner struct, or NULL.
+ */
+struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *server,
+ struct rpc_cred *cred)
{
struct nfs_client *clp = server->nfs_client;
struct nfs4_state_owner *sp, *new;
spin_lock(&clp->cl_lock);
- sp = nfs4_find_state_owner(server, cred);
+ sp = nfs4_find_state_owner_locked(server, cred);
spin_unlock(&clp->cl_lock);
if (sp != NULL)
return sp;
@@ -412,7 +490,7 @@ struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *server, struct
new->so_server = server;
new->so_cred = cred;
spin_lock(&clp->cl_lock);
- sp = nfs4_insert_state_owner(clp, new);
+ sp = nfs4_insert_state_owner_locked(new);
spin_unlock(&clp->cl_lock);
if (sp == new)
get_rpccred(cred);
@@ -423,6 +501,11 @@ struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *server, struct
return sp;
}
+/**
+ * nfs4_put_state_owner - Release a nfs4_state_owner
+ * @sp: state owner data to release
+ *
+ */
void nfs4_put_state_owner(struct nfs4_state_owner *sp)
{
struct nfs_client *clp = sp->so_server->nfs_client;
@@ -430,7 +513,7 @@ void nfs4_put_state_owner(struct nfs4_state_owner *sp)
if (!atomic_dec_and_lock(&sp->so_count, &clp->cl_lock))
return;
- nfs4_remove_state_owner(clp, sp);
+ nfs4_remove_state_owner_locked(sp);
spin_unlock(&clp->cl_lock);
rpc_destroy_wait_queue(&sp->so_sequence.wait);
put_rpccred(cred);
@@ -585,8 +668,11 @@ static void __nfs4_close(struct path *path, struct nfs4_state *state,
if (!call_close) {
nfs4_put_open_state(state);
nfs4_put_state_owner(owner);
- } else
- nfs4_do_close(path, state, gfp_mask, wait);
+ } else {
+ bool roc = pnfs_roc(state->inode);
+
+ nfs4_do_close(path, state, gfp_mask, wait, roc);
+ }
}
void nfs4_close_state(struct path *path, struct nfs4_state *state, fmode_t fmode)
@@ -633,7 +719,8 @@ __nfs4_find_lock_state(struct nfs4_state *state, fl_owner_t fl_owner, pid_t fl_p
static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, fl_owner_t fl_owner, pid_t fl_pid, unsigned int type)
{
struct nfs4_lock_state *lsp;
- struct nfs_client *clp = state->owner->so_server->nfs_client;
+ struct nfs_server *server = state->owner->so_server;
+ struct nfs_client *clp = server->nfs_client;
lsp = kzalloc(sizeof(*lsp), GFP_NOFS);
if (lsp == NULL)
@@ -657,7 +744,7 @@ static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, f
return NULL;
}
spin_lock(&clp->cl_lock);
- nfs_alloc_unique_id(&clp->cl_lockowner_id, &lsp->ls_id, 1, 64);
+ nfs_alloc_unique_id_locked(&server->lockowner_id, &lsp->ls_id, 1, 64);
spin_unlock(&clp->cl_lock);
INIT_LIST_HEAD(&lsp->ls_locks);
return lsp;
@@ -665,10 +752,11 @@ static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, f
static void nfs4_free_lock_state(struct nfs4_lock_state *lsp)
{
- struct nfs_client *clp = lsp->ls_state->owner->so_server->nfs_client;
+ struct nfs_server *server = lsp->ls_state->owner->so_server;
+ struct nfs_client *clp = server->nfs_client;
spin_lock(&clp->cl_lock);
- nfs_free_unique_id(&clp->cl_lockowner_id, &lsp->ls_id);
+ nfs_free_unique_id(&server->lockowner_id, &lsp->ls_id);
spin_unlock(&clp->cl_lock);
rpc_destroy_wait_queue(&lsp->ls_sequence.wait);
kfree(lsp);
@@ -1114,15 +1202,19 @@ static void nfs4_clear_open_state(struct nfs4_state *state)
}
}
-static void nfs4_state_mark_reclaim_helper(struct nfs_client *clp, int (*mark_reclaim)(struct nfs_client *clp, struct nfs4_state *state))
+static void nfs4_reset_seqids(struct nfs_server *server,
+ int (*mark_reclaim)(struct nfs_client *clp, struct nfs4_state *state))
{
+ struct nfs_client *clp = server->nfs_client;
struct nfs4_state_owner *sp;
struct rb_node *pos;
struct nfs4_state *state;
- /* Reset all sequence ids to zero */
- for (pos = rb_first(&clp->cl_state_owners); pos != NULL; pos = rb_next(pos)) {
- sp = rb_entry(pos, struct nfs4_state_owner, so_client_node);
+ spin_lock(&clp->cl_lock);
+ for (pos = rb_first(&server->state_owners);
+ pos != NULL;
+ pos = rb_next(pos)) {
+ sp = rb_entry(pos, struct nfs4_state_owner, so_server_node);
sp->so_seqid.flags = 0;
spin_lock(&sp->so_lock);
list_for_each_entry(state, &sp->so_states, open_states) {
@@ -1131,6 +1223,18 @@ static void nfs4_state_mark_reclaim_helper(struct nfs_client *clp, int (*mark_re
}
spin_unlock(&sp->so_lock);
}
+ spin_unlock(&clp->cl_lock);
+}
+
+static void nfs4_state_mark_reclaim_helper(struct nfs_client *clp,
+ int (*mark_reclaim)(struct nfs_client *clp, struct nfs4_state *state))
+{
+ struct nfs_server *server;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link)
+ nfs4_reset_seqids(server, mark_reclaim);
+ rcu_read_unlock();
}
static void nfs4_state_start_reclaim_reboot(struct nfs_client *clp)
@@ -1148,25 +1252,41 @@ static void nfs4_reclaim_complete(struct nfs_client *clp,
(void)ops->reclaim_complete(clp);
}
-static int nfs4_state_clear_reclaim_reboot(struct nfs_client *clp)
+static void nfs4_clear_reclaim_server(struct nfs_server *server)
{
+ struct nfs_client *clp = server->nfs_client;
struct nfs4_state_owner *sp;
struct rb_node *pos;
struct nfs4_state *state;
- if (!test_and_clear_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state))
- return 0;
-
- for (pos = rb_first(&clp->cl_state_owners); pos != NULL; pos = rb_next(pos)) {
- sp = rb_entry(pos, struct nfs4_state_owner, so_client_node);
+ spin_lock(&clp->cl_lock);
+ for (pos = rb_first(&server->state_owners);
+ pos != NULL;
+ pos = rb_next(pos)) {
+ sp = rb_entry(pos, struct nfs4_state_owner, so_server_node);
spin_lock(&sp->so_lock);
list_for_each_entry(state, &sp->so_states, open_states) {
- if (!test_and_clear_bit(NFS_STATE_RECLAIM_REBOOT, &state->flags))
+ if (!test_and_clear_bit(NFS_STATE_RECLAIM_REBOOT,
+ &state->flags))
continue;
nfs4_state_mark_reclaim_nograce(clp, state);
}
spin_unlock(&sp->so_lock);
}
+ spin_unlock(&clp->cl_lock);
+}
+
+static int nfs4_state_clear_reclaim_reboot(struct nfs_client *clp)
+{
+ struct nfs_server *server;
+
+ if (!test_and_clear_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state))
+ return 0;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link)
+ nfs4_clear_reclaim_server(server);
+ rcu_read_unlock();
nfs_delegation_reap_unclaimed(clp);
return 1;
@@ -1238,27 +1358,40 @@ static int nfs4_recovery_handle_error(struct nfs_client *clp, int error)
static int nfs4_do_reclaim(struct nfs_client *clp, const struct nfs4_state_recovery_ops *ops)
{
+ struct nfs4_state_owner *sp;
+ struct nfs_server *server;
struct rb_node *pos;
int status = 0;
restart:
- spin_lock(&clp->cl_lock);
- for (pos = rb_first(&clp->cl_state_owners); pos != NULL; pos = rb_next(pos)) {
- struct nfs4_state_owner *sp = rb_entry(pos, struct nfs4_state_owner, so_client_node);
- if (!test_and_clear_bit(ops->owner_flag_bit, &sp->so_flags))
- continue;
- atomic_inc(&sp->so_count);
- spin_unlock(&clp->cl_lock);
- status = nfs4_reclaim_open_state(sp, ops);
- if (status < 0) {
- set_bit(ops->owner_flag_bit, &sp->so_flags);
+ rcu_read_lock();
+ list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
+ spin_lock(&clp->cl_lock);
+ for (pos = rb_first(&server->state_owners);
+ pos != NULL;
+ pos = rb_next(pos)) {
+ sp = rb_entry(pos,
+ struct nfs4_state_owner, so_server_node);
+ if (!test_and_clear_bit(ops->owner_flag_bit,
+ &sp->so_flags))
+ continue;
+ atomic_inc(&sp->so_count);
+ spin_unlock(&clp->cl_lock);
+ rcu_read_unlock();
+
+ status = nfs4_reclaim_open_state(sp, ops);
+ if (status < 0) {
+ set_bit(ops->owner_flag_bit, &sp->so_flags);
+ nfs4_put_state_owner(sp);
+ return nfs4_recovery_handle_error(clp, status);
+ }
+
nfs4_put_state_owner(sp);
- return nfs4_recovery_handle_error(clp, status);
+ goto restart;
}
- nfs4_put_state_owner(sp);
- goto restart;
+ spin_unlock(&clp->cl_lock);
}
- spin_unlock(&clp->cl_lock);
+ rcu_read_unlock();
return status;
}
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 9f1826b012e..2ab8e5cb8f5 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -71,8 +71,8 @@ static int nfs4_stat_to_errno(int);
/* lock,open owner id:
* we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
*/
-#define open_owner_id_maxsz (1 + 4)
-#define lock_owner_id_maxsz (1 + 4)
+#define open_owner_id_maxsz (1 + 1 + 4)
+#define lock_owner_id_maxsz (1 + 1 + 4)
#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
@@ -1088,10 +1088,11 @@ static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lo
{
__be32 *p;
- p = reserve_space(xdr, 28);
+ p = reserve_space(xdr, 32);
p = xdr_encode_hyper(p, lowner->clientid);
- *p++ = cpu_to_be32(16);
+ *p++ = cpu_to_be32(20);
p = xdr_encode_opaque_fixed(p, "lock id:", 8);
+ *p++ = cpu_to_be32(lowner->s_dev);
xdr_encode_hyper(p, lowner->id);
}
@@ -1210,10 +1211,11 @@ static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_opena
*p++ = cpu_to_be32(OP_OPEN);
*p = cpu_to_be32(arg->seqid->sequence->counter);
encode_share_access(xdr, arg->fmode);
- p = reserve_space(xdr, 28);
+ p = reserve_space(xdr, 32);
p = xdr_encode_hyper(p, arg->clientid);
- *p++ = cpu_to_be32(16);
+ *p++ = cpu_to_be32(20);
p = xdr_encode_opaque_fixed(p, "open id:", 8);
+ *p++ = cpu_to_be32(arg->server->s_dev);
xdr_encode_hyper(p, arg->id);
}
@@ -1510,7 +1512,7 @@ encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
hdr->replen += decode_restorefh_maxsz;
}
-static int
+static void
encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
{
__be32 *p;
@@ -1521,14 +1523,12 @@ encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compoun
p = reserve_space(xdr, 2*4);
*p++ = cpu_to_be32(1);
*p = cpu_to_be32(FATTR4_WORD0_ACL);
- if (arg->acl_len % 4)
- return -EINVAL;
+ BUG_ON(arg->acl_len % 4);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(arg->acl_len);
xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
hdr->nops++;
hdr->replen += decode_setacl_maxsz;
- return 0;
}
static void
@@ -1789,7 +1789,6 @@ encode_layoutget(struct xdr_stream *xdr,
const struct nfs4_layoutget_args *args,
struct compound_hdr *hdr)
{
- nfs4_stateid stateid;
__be32 *p;
p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE);
@@ -1800,9 +1799,7 @@ encode_layoutget(struct xdr_stream *xdr,
p = xdr_encode_hyper(p, args->range.offset);
p = xdr_encode_hyper(p, args->range.length);
p = xdr_encode_hyper(p, args->minlength);
- pnfs_get_layout_stateid(&stateid, NFS_I(args->inode)->layout,
- args->ctx->state);
- p = xdr_encode_opaque_fixed(p, &stateid.data, NFS4_STATEID_SIZE);
+ p = xdr_encode_opaque_fixed(p, &args->stateid.data, NFS4_STATEID_SIZE);
*p = cpu_to_be32(args->maxcount);
dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
@@ -1833,393 +1830,362 @@ static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
/*
* Encode an ACCESS request
*/
-static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
+static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_accessargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_access(&xdr, args->access, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_access(xdr, args->access, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode LOOKUP request
*/
-static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
+static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_lookup_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->dir_fh, &hdr);
- encode_lookup(&xdr, args->name, &hdr);
- encode_getfh(&xdr, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->dir_fh, &hdr);
+ encode_lookup(xdr, args->name, &hdr);
+ encode_getfh(xdr, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode LOOKUP_ROOT request
*/
-static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
+static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs4_lookup_root_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putrootfh(&xdr, &hdr);
- encode_getfh(&xdr, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putrootfh(xdr, &hdr);
+ encode_getfh(xdr, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode REMOVE request
*/
-static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
+static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs_removeargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_remove(&xdr, &args->name, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_remove(xdr, &args->name, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode RENAME request
*/
-static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs_renameargs *args)
+static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs_renameargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->old_dir, &hdr);
- encode_savefh(&xdr, &hdr);
- encode_putfh(&xdr, args->new_dir, &hdr);
- encode_rename(&xdr, args->old_name, args->new_name, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
- encode_restorefh(&xdr, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->old_dir, &hdr);
+ encode_savefh(xdr, &hdr);
+ encode_putfh(xdr, args->new_dir, &hdr);
+ encode_rename(xdr, args->old_name, args->new_name, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
+ encode_restorefh(xdr, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode LINK request
*/
-static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
+static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_link_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_savefh(&xdr, &hdr);
- encode_putfh(&xdr, args->dir_fh, &hdr);
- encode_link(&xdr, args->name, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
- encode_restorefh(&xdr, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_savefh(xdr, &hdr);
+ encode_putfh(xdr, args->dir_fh, &hdr);
+ encode_link(xdr, args->name, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
+ encode_restorefh(xdr, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode CREATE request
*/
-static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
+static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_create_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->dir_fh, &hdr);
- encode_savefh(&xdr, &hdr);
- encode_create(&xdr, args, &hdr);
- encode_getfh(&xdr, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
- encode_restorefh(&xdr, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->dir_fh, &hdr);
+ encode_savefh(xdr, &hdr);
+ encode_create(xdr, args, &hdr);
+ encode_getfh(xdr, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
+ encode_restorefh(xdr, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode SYMLINK request
*/
-static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
+static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_create_arg *args)
{
- return nfs4_xdr_enc_create(req, p, args);
+ nfs4_xdr_enc_create(req, xdr, args);
}
/*
* Encode GETATTR request
*/
-static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
+static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_getattr_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a CLOSE request
*/
-static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
+static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_closeargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_close(&xdr, args, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_close(xdr, args, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode an OPEN request
*/
-static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
+static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_openargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_savefh(&xdr, &hdr);
- encode_open(&xdr, args, &hdr);
- encode_getfh(&xdr, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
- encode_restorefh(&xdr, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_savefh(xdr, &hdr);
+ encode_open(xdr, args, &hdr);
+ encode_getfh(xdr, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
+ encode_restorefh(xdr, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode an OPEN_CONFIRM request
*/
-static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
+static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_open_confirmargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 0,
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_open_confirm(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_open_confirm(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode an OPEN request with no attributes.
*/
-static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
+static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_openargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_open(&xdr, args, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_open(xdr, args, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode an OPEN_DOWNGRADE request
*/
-static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
+static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_closeargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_open_downgrade(&xdr, args, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_open_downgrade(xdr, args, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a LOCK request
*/
-static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
+static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_lock_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_lock(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_lock(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a LOCKT request
*/
-static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
+static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_lockt_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_lockt(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_lockt(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a LOCKU request
*/
-static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
+static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_locku_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_locku(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_locku(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
-static int nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, __be32 *p, struct nfs_release_lockowner_args *args)
+static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_release_lockowner_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = 0,
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_release_lockowner(&xdr, &args->lock_owner, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_release_lockowner(xdr, &args->lock_owner, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a READLINK request
*/
-static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
+static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_readlink *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_readlink(&xdr, args, req, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_readlink(xdr, args, req, &hdr);
xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
args->pgbase, args->pglen);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a READDIR request
*/
-static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
+static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_readdir_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_readdir(&xdr, args, req, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_readdir(xdr, args, req, &hdr);
xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
args->pgbase, args->count);
@@ -2227,428 +2193,387 @@ static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nf
__func__, hdr.replen << 2, args->pages,
args->pgbase, args->count);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a READ request
*/
-static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
+static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_readargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_read(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_read(xdr, args, &hdr);
xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
args->pages, args->pgbase, args->count);
req->rq_rcv_buf.flags |= XDRBUF_READ;
encode_nops(&hdr);
- return 0;
}
/*
* Encode an SETATTR request
*/
-static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
+static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_setattrargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_setattr(&xdr, args, args->server, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_setattr(xdr, args, args->server, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a GETACL request
*/
-static int
-nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
- struct nfs_getaclargs *args)
+static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_getaclargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
uint32_t replen;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1;
- encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);
+ encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
args->acl_pages, args->acl_pgbase, args->acl_len);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a WRITE request
*/
-static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
+static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_writeargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_write(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_write(xdr, args, &hdr);
req->rq_snd_buf.flags |= XDRBUF_WRITE;
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a COMMIT request
*/
-static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
+static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_writeargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_commit(&xdr, args, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_commit(xdr, args, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* FSINFO request
*/
-static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
+static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs4_fsinfo_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_fsinfo(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_fsinfo(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a PATHCONF request
*/
-static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
+static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_pathconf_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_getattr_one(&xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
&hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a STATFS request
*/
-static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
+static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_statfs_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_getattr_two(&xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* GETATTR_BITMAP request
*/
-static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p,
- struct nfs4_server_caps_arg *args)
+static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_server_caps_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fhandle, &hdr);
- encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fhandle, &hdr);
+ encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
FATTR4_WORD0_LINK_SUPPORT|
FATTR4_WORD0_SYMLINK_SUPPORT|
FATTR4_WORD0_ACLSUPPORT, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a RENEW request
*/
-static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
+static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_client *clp)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 0,
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_renew(&xdr, clp, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_renew(xdr, clp, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a SETCLIENTID request
*/
-static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
+static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_setclientid *sc)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 0,
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_setclientid(&xdr, sc, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_setclientid(xdr, sc, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a SETCLIENTID_CONFIRM request
*/
-static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid_res *arg)
+static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_setclientid_res *arg)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 0,
};
const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_setclientid_confirm(&xdr, arg, &hdr);
- encode_putrootfh(&xdr, &hdr);
- encode_fsinfo(&xdr, lease_bitmap, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_setclientid_confirm(xdr, arg, &hdr);
+ encode_putrootfh(xdr, &hdr);
+ encode_fsinfo(xdr, lease_bitmap, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* DELEGRETURN request
*/
-static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
+static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs4_delegreturnargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fhandle, &hdr);
- encode_delegreturn(&xdr, args->stateid, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fhandle, &hdr);
+ encode_delegreturn(xdr, args->stateid, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode FS_LOCATIONS request
*/
-static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
+static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_fs_locations_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
uint32_t replen;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->dir_fh, &hdr);
- encode_lookup(&xdr, args->name, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->dir_fh, &hdr);
+ encode_lookup(xdr, args->name, &hdr);
replen = hdr.replen; /* get the attribute into args->page */
- encode_fs_locations(&xdr, args->bitmask, &hdr);
+ encode_fs_locations(xdr, args->bitmask, &hdr);
xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
0, PAGE_SIZE);
encode_nops(&hdr);
- return 0;
}
#if defined(CONFIG_NFS_V4_1)
/*
* EXCHANGE_ID request
*/
-static int nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, uint32_t *p,
- struct nfs41_exchange_id_args *args)
+static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs41_exchange_id_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = args->client->cl_mvops->minor_version,
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_exchange_id(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_exchange_id(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a CREATE_SESSION request
*/
-static int nfs4_xdr_enc_create_session(struct rpc_rqst *req, uint32_t *p,
- struct nfs41_create_session_args *args)
+static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs41_create_session_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = args->client->cl_mvops->minor_version,
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_create_session(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_create_session(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a DESTROY_SESSION request
*/
-static int nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, uint32_t *p,
- struct nfs4_session *session)
+static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_session *session)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = session->clp->cl_mvops->minor_version,
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_destroy_session(&xdr, session, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_destroy_session(xdr, session, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a SEQUENCE request
*/
-static int nfs4_xdr_enc_sequence(struct rpc_rqst *req, uint32_t *p,
- struct nfs4_sequence_args *args)
+static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs4_sequence_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a GET_LEASE_TIME request
*/
-static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p,
- struct nfs4_get_lease_time_args *args)
+static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_get_lease_time_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
};
const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->la_seq_args, &hdr);
- encode_putrootfh(&xdr, &hdr);
- encode_fsinfo(&xdr, lease_bitmap, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->la_seq_args, &hdr);
+ encode_putrootfh(xdr, &hdr);
+ encode_fsinfo(xdr, lease_bitmap, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a RECLAIM_COMPLETE request
*/
-static int nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, uint32_t *p,
- struct nfs41_reclaim_complete_args *args)
+static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs41_reclaim_complete_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args)
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_reclaim_complete(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_reclaim_complete(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode GETDEVICEINFO request
*/
-static int nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, uint32_t *p,
- struct nfs4_getdeviceinfo_args *args)
+static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_getdeviceinfo_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_getdeviceinfo(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_getdeviceinfo(xdr, args, &hdr);
/* set up reply kvec. Subtract notification bitmap max size (2)
* so that notification bitmap is put in xdr_buf tail */
@@ -2657,27 +2582,24 @@ static int nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, uint32_t *p,
args->pdev->pglen);
encode_nops(&hdr);
- return 0;
}
/*
* Encode LAYOUTGET request
*/
-static int nfs4_xdr_enc_layoutget(struct rpc_rqst *req, uint32_t *p,
- struct nfs4_layoutget_args *args)
+static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_layoutget_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, NFS_FH(args->inode), &hdr);
- encode_layoutget(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, NFS_FH(args->inode), &hdr);
+ encode_layoutget(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
#endif /* CONFIG_NFS_V4_1 */
@@ -4475,7 +4397,7 @@ static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_
goto out_overflow;
eof = be32_to_cpup(p++);
count = be32_to_cpup(p);
- hdrlen = (u8 *) p - (u8 *) iov->iov_base;
+ hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
recvd = req->rq_rcv_buf.len - hdrlen;
if (count > recvd) {
dprintk("NFS: server cheating in read reply: "
@@ -5000,7 +4922,7 @@ static int decode_getdeviceinfo(struct xdr_stream *xdr,
goto out_overflow;
len = be32_to_cpup(p);
if (len) {
- int i;
+ uint32_t i;
p = xdr_inline_decode(xdr, 4 * len);
if (unlikely(!p))
@@ -5090,26 +5012,26 @@ out_overflow:
/*
* Decode OPEN_DOWNGRADE response
*/
-static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
+static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nfs_closeres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_open_downgrade(&xdr, res);
+ status = decode_open_downgrade(xdr, res);
if (status != 0)
goto out;
- decode_getfattr(&xdr, res->fattr, res->server,
+ decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5118,26 +5040,25 @@ out:
/*
* Decode ACCESS response
*/
-static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
+static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs4_accessres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status != 0)
goto out;
- status = decode_access(&xdr, res);
+ status = decode_access(xdr, res);
if (status != 0)
goto out;
- decode_getfattr(&xdr, res->fattr, res->server,
+ decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5146,26 +5067,28 @@ out:
/*
* Decode LOOKUP response
*/
-static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
+static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs4_lookup_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- if ((status = decode_lookup(&xdr)) != 0)
+ status = decode_lookup(xdr);
+ if (status)
goto out;
- if ((status = decode_getfh(&xdr, res->fh)) != 0)
+ status = decode_getfh(xdr, res->fh);
+ if (status)
goto out;
- status = decode_getfattr(&xdr, res->fattr, res->server
+ status = decode_getfattr(xdr, res->fattr, res->server
,!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5174,23 +5097,25 @@ out:
/*
* Decode LOOKUP_ROOT response
*/
-static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
+static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nfs4_lookup_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- if ((status = decode_putrootfh(&xdr)) != 0)
+ status = decode_putrootfh(xdr);
+ if (status)
goto out;
- if ((status = decode_getfh(&xdr, res->fh)) == 0)
- status = decode_getfattr(&xdr, res->fattr, res->server,
+ status = decode_getfh(xdr, res->fh);
+ if (status == 0)
+ status = decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5199,24 +5124,25 @@ out:
/*
* Decode REMOVE response
*/
-static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *res)
+static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_removeres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
+ status = decode_remove(xdr, &res->cinfo);
+ if (status)
goto out;
- decode_getfattr(&xdr, res->dir_attr, res->server,
+ decode_getfattr(xdr, res->dir_attr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5225,34 +5151,38 @@ out:
/*
* Decode RENAME response
*/
-static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs_renameres *res)
+static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_renameres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- if ((status = decode_savefh(&xdr)) != 0)
+ status = decode_savefh(xdr);
+ if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
+ status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
+ if (status)
goto out;
/* Current FH is target directory */
- if (decode_getfattr(&xdr, res->new_fattr, res->server,
+ if (decode_getfattr(xdr, res->new_fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task)) != 0)
goto out;
- if ((status = decode_restorefh(&xdr)) != 0)
+ status = decode_restorefh(xdr);
+ if (status)
goto out;
- decode_getfattr(&xdr, res->old_fattr, res->server,
+ decode_getfattr(xdr, res->old_fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5261,37 +5191,41 @@ out:
/*
* Decode LINK response
*/
-static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
+static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs4_link_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- if ((status = decode_savefh(&xdr)) != 0)
+ status = decode_savefh(xdr);
+ if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- if ((status = decode_link(&xdr, &res->cinfo)) != 0)
+ status = decode_link(xdr, &res->cinfo);
+ if (status)
goto out;
/*
* Note order: OP_LINK leaves the directory as the current
* filehandle.
*/
- if (decode_getfattr(&xdr, res->dir_attr, res->server,
+ if (decode_getfattr(xdr, res->dir_attr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task)) != 0)
goto out;
- if ((status = decode_restorefh(&xdr)) != 0)
+ status = decode_restorefh(xdr);
+ if (status)
goto out;
- decode_getfattr(&xdr, res->fattr, res->server,
+ decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5300,33 +5234,37 @@ out:
/*
* Decode CREATE response
*/
-static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
+static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs4_create_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- if ((status = decode_savefh(&xdr)) != 0)
+ status = decode_savefh(xdr);
+ if (status)
goto out;
- if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
+ status = decode_create(xdr, &res->dir_cinfo);
+ if (status)
goto out;
- if ((status = decode_getfh(&xdr, res->fh)) != 0)
+ status = decode_getfh(xdr, res->fh);
+ if (status)
goto out;
- if (decode_getfattr(&xdr, res->fattr, res->server,
+ if (decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task)) != 0)
goto out;
- if ((status = decode_restorefh(&xdr)) != 0)
+ status = decode_restorefh(xdr);
+ if (status)
goto out;
- decode_getfattr(&xdr, res->dir_fattr, res->server,
+ decode_getfattr(xdr, res->dir_fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5335,31 +5273,31 @@ out:
/*
* Decode SYMLINK response
*/
-static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
+static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs4_create_res *res)
{
- return nfs4_xdr_dec_create(rqstp, p, res);
+ return nfs4_xdr_dec_create(rqstp, xdr, res);
}
/*
* Decode GETATTR response
*/
-static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
+static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs4_getattr_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_getfattr(&xdr, res->fattr, res->server,
+ status = decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5368,46 +5306,40 @@ out:
/*
* Encode an SETACL request
*/
-static int
-nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
+static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_setaclargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- int status;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- status = encode_setacl(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_setacl(xdr, args, &hdr);
encode_nops(&hdr);
- return status;
}
/*
* Decode SETACL response
*/
static int
-nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p,
+nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs_setaclres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_setattr(&xdr);
+ status = decode_setattr(xdr);
out:
return status;
}
@@ -5416,24 +5348,22 @@ out:
* Decode GETACL response
*/
static int
-nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p,
+nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs_getaclres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_getacl(&xdr, rqstp, &res->acl_len);
+ status = decode_getacl(xdr, rqstp, &res->acl_len);
out:
return status;
@@ -5442,23 +5372,22 @@ out:
/*
* Decode CLOSE response
*/
-static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
+static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_closeres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_close(&xdr, res);
+ status = decode_close(xdr, res);
if (status != 0)
goto out;
/*
@@ -5467,7 +5396,7 @@ static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_clos
* an ESTALE error. Shouldn't be a problem,
* though, since fattr->valid will remain unset.
*/
- decode_getfattr(&xdr, res->fattr, res->server,
+ decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5476,36 +5405,35 @@ out:
/*
* Decode OPEN response
*/
-static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
+static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_openres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_savefh(&xdr);
+ status = decode_savefh(xdr);
if (status)
goto out;
- status = decode_open(&xdr, res);
+ status = decode_open(xdr, res);
if (status)
goto out;
- if (decode_getfh(&xdr, &res->fh) != 0)
+ if (decode_getfh(xdr, &res->fh) != 0)
goto out;
- if (decode_getfattr(&xdr, res->f_attr, res->server,
+ if (decode_getfattr(xdr, res->f_attr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task)) != 0)
goto out;
- if (decode_restorefh(&xdr) != 0)
+ if (decode_restorefh(xdr) != 0)
goto out;
- decode_getfattr(&xdr, res->dir_attr, res->server,
+ decode_getfattr(xdr, res->dir_attr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5514,20 +5442,20 @@ out:
/*
* Decode OPEN_CONFIRM response
*/
-static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
+static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nfs_open_confirmres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_open_confirm(&xdr, res);
+ status = decode_open_confirm(xdr, res);
out:
return status;
}
@@ -5535,26 +5463,26 @@ out:
/*
* Decode OPEN response
*/
-static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
+static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nfs_openres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_open(&xdr, res);
+ status = decode_open(xdr, res);
if (status)
goto out;
- decode_getfattr(&xdr, res->f_attr, res->server,
+ decode_getfattr(xdr, res->f_attr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5563,26 +5491,26 @@ out:
/*
* Decode SETATTR response
*/
-static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
+static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nfs_setattrres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_setattr(&xdr);
+ status = decode_setattr(xdr);
if (status)
goto out;
- decode_getfattr(&xdr, res->fattr, res->server,
+ decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5591,23 +5519,22 @@ out:
/*
* Decode LOCK response
*/
-static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
+static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_lock_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_lock(&xdr, res);
+ status = decode_lock(xdr, res);
out:
return status;
}
@@ -5615,23 +5542,22 @@ out:
/*
* Decode LOCKT response
*/
-static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
+static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_lockt_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_lockt(&xdr, res);
+ status = decode_lockt(xdr, res);
out:
return status;
}
@@ -5639,61 +5565,58 @@ out:
/*
* Decode LOCKU response
*/
-static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
+static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_locku_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_locku(&xdr, res);
+ status = decode_locku(xdr, res);
out:
return status;
}
-static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
+static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr, void *dummy)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_release_lockowner(&xdr);
+ status = decode_release_lockowner(xdr);
return status;
}
/*
* Decode READLINK response
*/
-static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p,
+static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
struct nfs4_readlink_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_readlink(&xdr, rqstp);
+ status = decode_readlink(xdr, rqstp);
out:
return status;
}
@@ -5701,23 +5624,22 @@ out:
/*
* Decode READDIR response
*/
-static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
+static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs4_readdir_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_readdir(&xdr, rqstp, res);
+ status = decode_readdir(xdr, rqstp, res);
out:
return status;
}
@@ -5725,23 +5647,22 @@ out:
/*
* Decode Read response
*/
-static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
+static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_readres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_read(&xdr, rqstp, res);
+ status = decode_read(xdr, rqstp, res);
if (!status)
status = res->count;
out:
@@ -5751,26 +5672,25 @@ out:
/*
* Decode WRITE response
*/
-static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
+static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_writeres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_write(&xdr, res);
+ status = decode_write(xdr, res);
if (status)
goto out;
- decode_getfattr(&xdr, res->fattr, res->server,
+ decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
if (!status)
status = res->count;
@@ -5781,26 +5701,25 @@ out:
/*
* Decode COMMIT response
*/
-static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
+static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_writeres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_commit(&xdr, res);
+ status = decode_commit(xdr, res);
if (status)
goto out;
- decode_getfattr(&xdr, res->fattr, res->server,
+ decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5809,85 +5728,80 @@ out:
/*
* Decode FSINFO response
*/
-static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p,
+static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs4_fsinfo_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_sequence(&xdr, &res->seq_res, req);
+ status = decode_sequence(xdr, &res->seq_res, req);
if (!status)
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (!status)
- status = decode_fsinfo(&xdr, res->fsinfo);
+ status = decode_fsinfo(xdr, res->fsinfo);
return status;
}
/*
* Decode PATHCONF response
*/
-static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p,
+static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs4_pathconf_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_sequence(&xdr, &res->seq_res, req);
+ status = decode_sequence(xdr, &res->seq_res, req);
if (!status)
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (!status)
- status = decode_pathconf(&xdr, res->pathconf);
+ status = decode_pathconf(xdr, res->pathconf);
return status;
}
/*
* Decode STATFS response
*/
-static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p,
+static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs4_statfs_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_sequence(&xdr, &res->seq_res, req);
+ status = decode_sequence(xdr, &res->seq_res, req);
if (!status)
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (!status)
- status = decode_statfs(&xdr, res->fsstat);
+ status = decode_statfs(xdr, res->fsstat);
return status;
}
/*
* Decode GETATTR_BITMAP response
*/
-static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
+static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_server_caps_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, req);
+ status = decode_sequence(xdr, &res->seq_res, req);
if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- status = decode_server_caps(&xdr, res);
+ status = decode_server_caps(xdr, res);
out:
return status;
}
@@ -5895,79 +5809,77 @@ out:
/*
* Decode RENEW response
*/
-static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
+static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ void *__unused)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_renew(&xdr);
+ status = decode_renew(xdr);
return status;
}
/*
* Decode SETCLIENTID response
*/
-static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
- struct nfs4_setclientid_res *res)
+static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_setclientid_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_setclientid(&xdr, res);
+ status = decode_setclientid(xdr, res);
return status;
}
/*
* Decode SETCLIENTID_CONFIRM response
*/
-static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
+static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_fsinfo *fsinfo)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_setclientid_confirm(&xdr);
+ status = decode_setclientid_confirm(xdr);
if (!status)
- status = decode_putrootfh(&xdr);
+ status = decode_putrootfh(xdr);
if (!status)
- status = decode_fsinfo(&xdr, fsinfo);
+ status = decode_fsinfo(xdr, fsinfo);
return status;
}
/*
* Decode DELEGRETURN response
*/
-static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
+static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nfs4_delegreturnres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status != 0)
goto out;
- status = decode_delegreturn(&xdr);
+ status = decode_delegreturn(xdr);
if (status != 0)
goto out;
- decode_getfattr(&xdr, res->fattr, res->server,
+ decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5976,26 +5888,27 @@ out:
/*
* Decode FS_LOCATIONS response
*/
-static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p,
+static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nfs4_fs_locations_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, req);
+ status = decode_sequence(xdr, &res->seq_res, req);
if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- if ((status = decode_lookup(&xdr)) != 0)
+ status = decode_lookup(xdr);
+ if (status)
goto out;
- xdr_enter_page(&xdr, PAGE_SIZE);
- status = decode_getfattr(&xdr, &res->fs_locations->fattr,
+ xdr_enter_page(xdr, PAGE_SIZE);
+ status = decode_getfattr(xdr, &res->fs_locations->fattr,
res->fs_locations->server,
!RPC_IS_ASYNC(req->rq_task));
out:
@@ -6006,129 +5919,122 @@ out:
/*
* Decode EXCHANGE_ID response
*/
-static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p,
+static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
void *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_exchange_id(&xdr, res);
+ status = decode_exchange_id(xdr, res);
return status;
}
/*
* Decode CREATE_SESSION response
*/
-static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p,
+static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
struct nfs41_create_session_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_create_session(&xdr, res);
+ status = decode_create_session(xdr, res);
return status;
}
/*
* Decode DESTROY_SESSION response
*/
-static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p,
- void *dummy)
+static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ void *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_destroy_session(&xdr, dummy);
+ status = decode_destroy_session(xdr, res);
return status;
}
/*
* Decode SEQUENCE response
*/
-static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p,
+static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
struct nfs4_sequence_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_sequence(&xdr, res, rqstp);
+ status = decode_sequence(xdr, res, rqstp);
return status;
}
/*
* Decode GET_LEASE_TIME response
*/
-static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p,
+static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
struct nfs4_get_lease_time_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_sequence(&xdr, &res->lr_seq_res, rqstp);
+ status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
if (!status)
- status = decode_putrootfh(&xdr);
+ status = decode_putrootfh(xdr);
if (!status)
- status = decode_fsinfo(&xdr, res->lr_fsinfo);
+ status = decode_fsinfo(xdr, res->lr_fsinfo);
return status;
}
/*
* Decode RECLAIM_COMPLETE response
*/
-static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, uint32_t *p,
+static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
struct nfs41_reclaim_complete_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (!status)
- status = decode_reclaim_complete(&xdr, (void *)NULL);
+ status = decode_reclaim_complete(xdr, (void *)NULL);
return status;
}
/*
* Decode GETDEVINFO response
*/
-static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, uint32_t *p,
+static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
struct nfs4_getdeviceinfo_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status != 0)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status != 0)
goto out;
- status = decode_getdeviceinfo(&xdr, res->pdev);
+ status = decode_getdeviceinfo(xdr, res->pdev);
out:
return status;
}
@@ -6136,31 +6042,44 @@ out:
/*
* Decode LAYOUTGET response
*/
-static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, uint32_t *p,
+static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
struct nfs4_layoutget_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_layoutget(&xdr, rqstp, res);
+ status = decode_layoutget(xdr, rqstp, res);
out:
return status;
}
#endif /* CONFIG_NFS_V4_1 */
-__be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
- struct nfs_server *server, int plus)
+/**
+ * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
+ * the local page cache.
+ * @xdr: XDR stream where entry resides
+ * @entry: buffer to fill in with entry data
+ * @plus: boolean indicating whether this should be a readdirplus entry
+ *
+ * Returns zero if successful, otherwise a negative errno value is
+ * returned.
+ *
+ * This function is not invoked during READDIR reply decoding, but
+ * rather whenever an application invokes the getdents(2) system call
+ * on a directory already in our cache.
+ */
+int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
+ int plus)
{
uint32_t bitmap[2] = {0};
uint32_t len;
@@ -6172,9 +6091,9 @@ __be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
if (unlikely(!p))
goto out_overflow;
if (!ntohl(*p++))
- return ERR_PTR(-EAGAIN);
+ return -EAGAIN;
entry->eof = 1;
- return ERR_PTR(-EBADCOOKIE);
+ return -EBADCOOKIE;
}
p = xdr_inline_decode(xdr, 12);
@@ -6203,7 +6122,8 @@ __be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
if (decode_attr_length(xdr, &len, &p) < 0)
goto out_overflow;
- if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, server, 1) < 0)
+ if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
+ entry->server, 1) < 0)
goto out_overflow;
if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
entry->ino = entry->fattr->fileid;
@@ -6215,17 +6135,11 @@ __be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
if (verify_attr_len(xdr, p, len) < 0)
goto out_overflow;
- p = xdr_inline_peek(xdr, 8);
- if (p != NULL)
- entry->eof = !p[0] && p[1];
- else
- entry->eof = 0;
-
- return p;
+ return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
- return ERR_PTR(-EAGAIN);
+ return -EAGAIN;
}
/*
@@ -6301,8 +6215,8 @@ nfs4_stat_to_errno(int stat)
#define PROC(proc, argtype, restype) \
[NFSPROC4_CLNT_##proc] = { \
.p_proc = NFSPROC4_COMPOUND, \
- .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
- .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
+ .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
+ .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
.p_arglen = NFS4_##argtype##_sz, \
.p_replen = NFS4_##restype##_sz, \
.p_statidx = NFSPROC4_CLNT_##proc, \
@@ -6310,50 +6224,50 @@ nfs4_stat_to_errno(int stat)
}
struct rpc_procinfo nfs4_procedures[] = {
- PROC(READ, enc_read, dec_read),
- PROC(WRITE, enc_write, dec_write),
- PROC(COMMIT, enc_commit, dec_commit),
- PROC(OPEN, enc_open, dec_open),
- PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
- PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
- PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
- PROC(CLOSE, enc_close, dec_close),
- PROC(SETATTR, enc_setattr, dec_setattr),
- PROC(FSINFO, enc_fsinfo, dec_fsinfo),
- PROC(RENEW, enc_renew, dec_renew),
- PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
- PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
- PROC(LOCK, enc_lock, dec_lock),
- PROC(LOCKT, enc_lockt, dec_lockt),
- PROC(LOCKU, enc_locku, dec_locku),
- PROC(ACCESS, enc_access, dec_access),
- PROC(GETATTR, enc_getattr, dec_getattr),
- PROC(LOOKUP, enc_lookup, dec_lookup),
- PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
- PROC(REMOVE, enc_remove, dec_remove),
- PROC(RENAME, enc_rename, dec_rename),
- PROC(LINK, enc_link, dec_link),
- PROC(SYMLINK, enc_symlink, dec_symlink),
- PROC(CREATE, enc_create, dec_create),
- PROC(PATHCONF, enc_pathconf, dec_pathconf),
- PROC(STATFS, enc_statfs, dec_statfs),
- PROC(READLINK, enc_readlink, dec_readlink),
- PROC(READDIR, enc_readdir, dec_readdir),
- PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
- PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
- PROC(GETACL, enc_getacl, dec_getacl),
- PROC(SETACL, enc_setacl, dec_setacl),
- PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
- PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
+ PROC(READ, enc_read, dec_read),
+ PROC(WRITE, enc_write, dec_write),
+ PROC(COMMIT, enc_commit, dec_commit),
+ PROC(OPEN, enc_open, dec_open),
+ PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
+ PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
+ PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
+ PROC(CLOSE, enc_close, dec_close),
+ PROC(SETATTR, enc_setattr, dec_setattr),
+ PROC(FSINFO, enc_fsinfo, dec_fsinfo),
+ PROC(RENEW, enc_renew, dec_renew),
+ PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
+ PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
+ PROC(LOCK, enc_lock, dec_lock),
+ PROC(LOCKT, enc_lockt, dec_lockt),
+ PROC(LOCKU, enc_locku, dec_locku),
+ PROC(ACCESS, enc_access, dec_access),
+ PROC(GETATTR, enc_getattr, dec_getattr),
+ PROC(LOOKUP, enc_lookup, dec_lookup),
+ PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
+ PROC(REMOVE, enc_remove, dec_remove),
+ PROC(RENAME, enc_rename, dec_rename),
+ PROC(LINK, enc_link, dec_link),
+ PROC(SYMLINK, enc_symlink, dec_symlink),
+ PROC(CREATE, enc_create, dec_create),
+ PROC(PATHCONF, enc_pathconf, dec_pathconf),
+ PROC(STATFS, enc_statfs, dec_statfs),
+ PROC(READLINK, enc_readlink, dec_readlink),
+ PROC(READDIR, enc_readdir, dec_readdir),
+ PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
+ PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
+ PROC(GETACL, enc_getacl, dec_getacl),
+ PROC(SETACL, enc_setacl, dec_setacl),
+ PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
+ PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
#if defined(CONFIG_NFS_V4_1)
- PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
- PROC(CREATE_SESSION, enc_create_session, dec_create_session),
- PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
- PROC(SEQUENCE, enc_sequence, dec_sequence),
- PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
- PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
- PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
- PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
+ PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
+ PROC(CREATE_SESSION, enc_create_session, dec_create_session),
+ PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
+ PROC(SEQUENCE, enc_sequence, dec_sequence),
+ PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
+ PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
+ PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
+ PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
#endif /* CONFIG_NFS_V4_1 */
};
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index b68536cc904..e1164e3f9e6 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -26,12 +26,9 @@ static struct kmem_cache *nfs_page_cachep;
static inline struct nfs_page *
nfs_page_alloc(void)
{
- struct nfs_page *p;
- p = kmem_cache_alloc(nfs_page_cachep, GFP_KERNEL);
- if (p) {
- memset(p, 0, sizeof(*p));
+ struct nfs_page *p = kmem_cache_zalloc(nfs_page_cachep, GFP_KERNEL);
+ if (p)
INIT_LIST_HEAD(&p->wb_list);
- }
return p;
}
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index db773428f95..bc408976973 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -177,105 +177,149 @@ EXPORT_SYMBOL_GPL(pnfs_unregister_layoutdriver);
* pNFS client layout cache
*/
+/* Need to hold i_lock if caller does not already hold reference */
+void
+get_layout_hdr(struct pnfs_layout_hdr *lo)
+{
+ atomic_inc(&lo->plh_refcount);
+}
+
static void
-get_layout_hdr_locked(struct pnfs_layout_hdr *lo)
+destroy_layout_hdr(struct pnfs_layout_hdr *lo)
{
- assert_spin_locked(&lo->inode->i_lock);
- lo->refcount++;
+ dprintk("%s: freeing layout cache %p\n", __func__, lo);
+ BUG_ON(!list_empty(&lo->plh_layouts));
+ NFS_I(lo->plh_inode)->layout = NULL;
+ kfree(lo);
}
static void
put_layout_hdr_locked(struct pnfs_layout_hdr *lo)
{
- assert_spin_locked(&lo->inode->i_lock);
- BUG_ON(lo->refcount == 0);
-
- lo->refcount--;
- if (!lo->refcount) {
- dprintk("%s: freeing layout cache %p\n", __func__, lo);
- BUG_ON(!list_empty(&lo->layouts));
- NFS_I(lo->inode)->layout = NULL;
- kfree(lo);
- }
+ if (atomic_dec_and_test(&lo->plh_refcount))
+ destroy_layout_hdr(lo);
}
void
-put_layout_hdr(struct inode *inode)
+put_layout_hdr(struct pnfs_layout_hdr *lo)
{
- spin_lock(&inode->i_lock);
- put_layout_hdr_locked(NFS_I(inode)->layout);
- spin_unlock(&inode->i_lock);
+ struct inode *inode = lo->plh_inode;
+
+ if (atomic_dec_and_lock(&lo->plh_refcount, &inode->i_lock)) {
+ destroy_layout_hdr(lo);
+ spin_unlock(&inode->i_lock);
+ }
}
static void
init_lseg(struct pnfs_layout_hdr *lo, struct pnfs_layout_segment *lseg)
{
- INIT_LIST_HEAD(&lseg->fi_list);
- kref_init(&lseg->kref);
- lseg->layout = lo;
+ INIT_LIST_HEAD(&lseg->pls_list);
+ atomic_set(&lseg->pls_refcount, 1);
+ smp_mb();
+ set_bit(NFS_LSEG_VALID, &lseg->pls_flags);
+ lseg->pls_layout = lo;
}
-/* Called without i_lock held, as the free_lseg call may sleep */
-static void
-destroy_lseg(struct kref *kref)
+static void free_lseg(struct pnfs_layout_segment *lseg)
{
- struct pnfs_layout_segment *lseg =
- container_of(kref, struct pnfs_layout_segment, kref);
- struct inode *ino = lseg->layout->inode;
+ struct inode *ino = lseg->pls_layout->plh_inode;
- dprintk("--> %s\n", __func__);
NFS_SERVER(ino)->pnfs_curr_ld->free_lseg(lseg);
- /* Matched by get_layout_hdr_locked in pnfs_insert_layout */
- put_layout_hdr(ino);
+ /* Matched by get_layout_hdr in pnfs_insert_layout */
+ put_layout_hdr(NFS_I(ino)->layout);
}
-static void
-put_lseg(struct pnfs_layout_segment *lseg)
+/* The use of tmp_list is necessary because pnfs_curr_ld->free_lseg
+ * could sleep, so must be called outside of the lock.
+ * Returns 1 if object was removed, otherwise return 0.
+ */
+static int
+put_lseg_locked(struct pnfs_layout_segment *lseg,
+ struct list_head *tmp_list)
+{
+ dprintk("%s: lseg %p ref %d valid %d\n", __func__, lseg,
+ atomic_read(&lseg->pls_refcount),
+ test_bit(NFS_LSEG_VALID, &lseg->pls_flags));
+ if (atomic_dec_and_test(&lseg->pls_refcount)) {
+ struct inode *ino = lseg->pls_layout->plh_inode;
+
+ BUG_ON(test_bit(NFS_LSEG_VALID, &lseg->pls_flags));
+ list_del(&lseg->pls_list);
+ if (list_empty(&lseg->pls_layout->plh_segs)) {
+ struct nfs_client *clp;
+
+ clp = NFS_SERVER(ino)->nfs_client;
+ spin_lock(&clp->cl_lock);
+ /* List does not take a reference, so no need for put here */
+ list_del_init(&lseg->pls_layout->plh_layouts);
+ spin_unlock(&clp->cl_lock);
+ clear_bit(NFS_LAYOUT_BULK_RECALL, &lseg->pls_layout->plh_flags);
+ }
+ rpc_wake_up(&NFS_SERVER(ino)->roc_rpcwaitq);
+ list_add(&lseg->pls_list, tmp_list);
+ return 1;
+ }
+ return 0;
+}
+
+static bool
+should_free_lseg(u32 lseg_iomode, u32 recall_iomode)
{
- if (!lseg)
- return;
+ return (recall_iomode == IOMODE_ANY ||
+ lseg_iomode == recall_iomode);
+}
- dprintk("%s: lseg %p ref %d\n", __func__, lseg,
- atomic_read(&lseg->kref.refcount));
- kref_put(&lseg->kref, destroy_lseg);
+/* Returns 1 if lseg is removed from list, 0 otherwise */
+static int mark_lseg_invalid(struct pnfs_layout_segment *lseg,
+ struct list_head *tmp_list)
+{
+ int rv = 0;
+
+ if (test_and_clear_bit(NFS_LSEG_VALID, &lseg->pls_flags)) {
+ /* Remove the reference keeping the lseg in the
+ * list. It will now be removed when all
+ * outstanding io is finished.
+ */
+ rv = put_lseg_locked(lseg, tmp_list);
+ }
+ return rv;
}
-static void
-pnfs_clear_lseg_list(struct pnfs_layout_hdr *lo, struct list_head *tmp_list)
+/* Returns count of number of matching invalid lsegs remaining in list
+ * after call.
+ */
+int
+mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo,
+ struct list_head *tmp_list,
+ u32 iomode)
{
struct pnfs_layout_segment *lseg, *next;
- struct nfs_client *clp;
+ int invalid = 0, removed = 0;
dprintk("%s:Begin lo %p\n", __func__, lo);
- assert_spin_locked(&lo->inode->i_lock);
- list_for_each_entry_safe(lseg, next, &lo->segs, fi_list) {
- dprintk("%s: freeing lseg %p\n", __func__, lseg);
- list_move(&lseg->fi_list, tmp_list);
- }
- clp = NFS_SERVER(lo->inode)->nfs_client;
- spin_lock(&clp->cl_lock);
- /* List does not take a reference, so no need for put here */
- list_del_init(&lo->layouts);
- spin_unlock(&clp->cl_lock);
- write_seqlock(&lo->seqlock);
- clear_bit(NFS_LAYOUT_STATEID_SET, &lo->state);
- write_sequnlock(&lo->seqlock);
-
- dprintk("%s:Return\n", __func__);
+ list_for_each_entry_safe(lseg, next, &lo->plh_segs, pls_list)
+ if (should_free_lseg(lseg->pls_range.iomode, iomode)) {
+ dprintk("%s: freeing lseg %p iomode %d "
+ "offset %llu length %llu\n", __func__,
+ lseg, lseg->pls_range.iomode, lseg->pls_range.offset,
+ lseg->pls_range.length);
+ invalid++;
+ removed += mark_lseg_invalid(lseg, tmp_list);
+ }
+ dprintk("%s:Return %i\n", __func__, invalid - removed);
+ return invalid - removed;
}
-static void
-pnfs_free_lseg_list(struct list_head *tmp_list)
+void
+pnfs_free_lseg_list(struct list_head *free_me)
{
- struct pnfs_layout_segment *lseg;
+ struct pnfs_layout_segment *lseg, *tmp;
- while (!list_empty(tmp_list)) {
- lseg = list_entry(tmp_list->next, struct pnfs_layout_segment,
- fi_list);
- dprintk("%s calling put_lseg on %p\n", __func__, lseg);
- list_del(&lseg->fi_list);
- put_lseg(lseg);
+ list_for_each_entry_safe(lseg, tmp, free_me, pls_list) {
+ list_del(&lseg->pls_list);
+ free_lseg(lseg);
}
}
@@ -288,7 +332,8 @@ pnfs_destroy_layout(struct nfs_inode *nfsi)
spin_lock(&nfsi->vfs_inode.i_lock);
lo = nfsi->layout;
if (lo) {
- pnfs_clear_lseg_list(lo, &tmp_list);
+ set_bit(NFS_LAYOUT_DESTROYED, &nfsi->layout->plh_flags);
+ mark_matching_lsegs_invalid(lo, &tmp_list, IOMODE_ANY);
/* Matched by refcount set to 1 in alloc_init_layout_hdr */
put_layout_hdr_locked(lo);
}
@@ -312,76 +357,80 @@ pnfs_destroy_all_layouts(struct nfs_client *clp)
while (!list_empty(&tmp_list)) {
lo = list_entry(tmp_list.next, struct pnfs_layout_hdr,
- layouts);
+ plh_layouts);
dprintk("%s freeing layout for inode %lu\n", __func__,
- lo->inode->i_ino);
- pnfs_destroy_layout(NFS_I(lo->inode));
+ lo->plh_inode->i_ino);
+ pnfs_destroy_layout(NFS_I(lo->plh_inode));
}
}
-/* update lo->stateid with new if is more recent
- *
- * lo->stateid could be the open stateid, in which case we just use what given.
- */
-static void
-pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo,
- const nfs4_stateid *new)
-{
- nfs4_stateid *old = &lo->stateid;
- bool overwrite = false;
-
- write_seqlock(&lo->seqlock);
- if (!test_bit(NFS_LAYOUT_STATEID_SET, &lo->state) ||
- memcmp(old->stateid.other, new->stateid.other, sizeof(new->stateid.other)))
- overwrite = true;
- else {
- u32 oldseq, newseq;
-
- oldseq = be32_to_cpu(old->stateid.seqid);
- newseq = be32_to_cpu(new->stateid.seqid);
- if ((int)(newseq - oldseq) > 0)
- overwrite = true;
+/* update lo->plh_stateid with new if is more recent */
+void
+pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, const nfs4_stateid *new,
+ bool update_barrier)
+{
+ u32 oldseq, newseq;
+
+ oldseq = be32_to_cpu(lo->plh_stateid.stateid.seqid);
+ newseq = be32_to_cpu(new->stateid.seqid);
+ if ((int)(newseq - oldseq) > 0) {
+ memcpy(&lo->plh_stateid, &new->stateid, sizeof(new->stateid));
+ if (update_barrier) {
+ u32 new_barrier = be32_to_cpu(new->stateid.seqid);
+
+ if ((int)(new_barrier - lo->plh_barrier))
+ lo->plh_barrier = new_barrier;
+ } else {
+ /* Because of wraparound, we want to keep the barrier
+ * "close" to the current seqids. It needs to be
+ * within 2**31 to count as "behind", so if it
+ * gets too near that limit, give us a litle leeway
+ * and bring it to within 2**30.
+ * NOTE - and yes, this is all unsigned arithmetic.
+ */
+ if (unlikely((newseq - lo->plh_barrier) > (3 << 29)))
+ lo->plh_barrier = newseq - (1 << 30);
+ }
}
- if (overwrite)
- memcpy(&old->stateid, &new->stateid, sizeof(new->stateid));
- write_sequnlock(&lo->seqlock);
}
-static void
-pnfs_layout_from_open_stateid(struct pnfs_layout_hdr *lo,
- struct nfs4_state *state)
+/* lget is set to 1 if called from inside send_layoutget call chain */
+static bool
+pnfs_layoutgets_blocked(struct pnfs_layout_hdr *lo, nfs4_stateid *stateid,
+ int lget)
{
- int seq;
-
- dprintk("--> %s\n", __func__);
- write_seqlock(&lo->seqlock);
- do {
- seq = read_seqbegin(&state->seqlock);
- memcpy(lo->stateid.data, state->stateid.data,
- sizeof(state->stateid.data));
- } while (read_seqretry(&state->seqlock, seq));
- set_bit(NFS_LAYOUT_STATEID_SET, &lo->state);
- write_sequnlock(&lo->seqlock);
- dprintk("<-- %s\n", __func__);
+ if ((stateid) &&
+ (int)(lo->plh_barrier - be32_to_cpu(stateid->stateid.seqid)) >= 0)
+ return true;
+ return lo->plh_block_lgets ||
+ test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags) ||
+ (list_empty(&lo->plh_segs) &&
+ (atomic_read(&lo->plh_outstanding) > lget));
}
-void
-pnfs_get_layout_stateid(nfs4_stateid *dst, struct pnfs_layout_hdr *lo,
- struct nfs4_state *open_state)
+int
+pnfs_choose_layoutget_stateid(nfs4_stateid *dst, struct pnfs_layout_hdr *lo,
+ struct nfs4_state *open_state)
{
- int seq;
+ int status = 0;
dprintk("--> %s\n", __func__);
- do {
- seq = read_seqbegin(&lo->seqlock);
- if (!test_bit(NFS_LAYOUT_STATEID_SET, &lo->state)) {
- /* This will trigger retry of the read */
- pnfs_layout_from_open_stateid(lo, open_state);
- } else
- memcpy(dst->data, lo->stateid.data,
- sizeof(lo->stateid.data));
- } while (read_seqretry(&lo->seqlock, seq));
+ spin_lock(&lo->plh_inode->i_lock);
+ if (pnfs_layoutgets_blocked(lo, NULL, 1)) {
+ status = -EAGAIN;
+ } else if (list_empty(&lo->plh_segs)) {
+ int seq;
+
+ do {
+ seq = read_seqbegin(&open_state->seqlock);
+ memcpy(dst->data, open_state->stateid.data,
+ sizeof(open_state->stateid.data));
+ } while (read_seqretry(&open_state->seqlock, seq));
+ } else
+ memcpy(dst->data, lo->plh_stateid.data, sizeof(lo->plh_stateid.data));
+ spin_unlock(&lo->plh_inode->i_lock);
dprintk("<-- %s\n", __func__);
+ return status;
}
/*
@@ -395,7 +444,7 @@ send_layoutget(struct pnfs_layout_hdr *lo,
struct nfs_open_context *ctx,
u32 iomode)
{
- struct inode *ino = lo->inode;
+ struct inode *ino = lo->plh_inode;
struct nfs_server *server = NFS_SERVER(ino);
struct nfs4_layoutget *lgp;
struct pnfs_layout_segment *lseg = NULL;
@@ -404,10 +453,8 @@ send_layoutget(struct pnfs_layout_hdr *lo,
BUG_ON(ctx == NULL);
lgp = kzalloc(sizeof(*lgp), GFP_KERNEL);
- if (lgp == NULL) {
- put_layout_hdr(lo->inode);
+ if (lgp == NULL)
return NULL;
- }
lgp->args.minlength = NFS4_MAX_UINT64;
lgp->args.maxcount = PNFS_LAYOUT_MAXSIZE;
lgp->args.range.iomode = iomode;
@@ -424,11 +471,88 @@ send_layoutget(struct pnfs_layout_hdr *lo,
nfs4_proc_layoutget(lgp);
if (!lseg) {
/* remember that LAYOUTGET failed and suspend trying */
- set_bit(lo_fail_bit(iomode), &lo->state);
+ set_bit(lo_fail_bit(iomode), &lo->plh_flags);
}
return lseg;
}
+bool pnfs_roc(struct inode *ino)
+{
+ struct pnfs_layout_hdr *lo;
+ struct pnfs_layout_segment *lseg, *tmp;
+ LIST_HEAD(tmp_list);
+ bool found = false;
+
+ spin_lock(&ino->i_lock);
+ lo = NFS_I(ino)->layout;
+ if (!lo || !test_and_clear_bit(NFS_LAYOUT_ROC, &lo->plh_flags) ||
+ test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags))
+ goto out_nolayout;
+ list_for_each_entry_safe(lseg, tmp, &lo->plh_segs, pls_list)
+ if (test_bit(NFS_LSEG_ROC, &lseg->pls_flags)) {
+ mark_lseg_invalid(lseg, &tmp_list);
+ found = true;
+ }
+ if (!found)
+ goto out_nolayout;
+ lo->plh_block_lgets++;
+ get_layout_hdr(lo); /* matched in pnfs_roc_release */
+ spin_unlock(&ino->i_lock);
+ pnfs_free_lseg_list(&tmp_list);
+ return true;
+
+out_nolayout:
+ spin_unlock(&ino->i_lock);
+ return false;
+}
+
+void pnfs_roc_release(struct inode *ino)
+{
+ struct pnfs_layout_hdr *lo;
+
+ spin_lock(&ino->i_lock);
+ lo = NFS_I(ino)->layout;
+ lo->plh_block_lgets--;
+ put_layout_hdr_locked(lo);
+ spin_unlock(&ino->i_lock);
+}
+
+void pnfs_roc_set_barrier(struct inode *ino, u32 barrier)
+{
+ struct pnfs_layout_hdr *lo;
+
+ spin_lock(&ino->i_lock);
+ lo = NFS_I(ino)->layout;
+ if ((int)(barrier - lo->plh_barrier) > 0)
+ lo->plh_barrier = barrier;
+ spin_unlock(&ino->i_lock);
+}
+
+bool pnfs_roc_drain(struct inode *ino, u32 *barrier)
+{
+ struct nfs_inode *nfsi = NFS_I(ino);
+ struct pnfs_layout_segment *lseg;
+ bool found = false;
+
+ spin_lock(&ino->i_lock);
+ list_for_each_entry(lseg, &nfsi->layout->plh_segs, pls_list)
+ if (test_bit(NFS_LSEG_ROC, &lseg->pls_flags)) {
+ found = true;
+ break;
+ }
+ if (!found) {
+ struct pnfs_layout_hdr *lo = nfsi->layout;
+ u32 current_seqid = be32_to_cpu(lo->plh_stateid.stateid.seqid);
+
+ /* Since close does not return a layout stateid for use as
+ * a barrier, we choose the worst-case barrier.
+ */
+ *barrier = current_seqid + atomic_read(&lo->plh_outstanding);
+ }
+ spin_unlock(&ino->i_lock);
+ return found;
+}
+
/*
* Compare two layout segments for sorting into layout cache.
* We want to preferentially return RW over RO layouts, so ensure those
@@ -450,37 +574,29 @@ pnfs_insert_layout(struct pnfs_layout_hdr *lo,
dprintk("%s:Begin\n", __func__);
- assert_spin_locked(&lo->inode->i_lock);
- if (list_empty(&lo->segs)) {
- struct nfs_client *clp = NFS_SERVER(lo->inode)->nfs_client;
-
- spin_lock(&clp->cl_lock);
- BUG_ON(!list_empty(&lo->layouts));
- list_add_tail(&lo->layouts, &clp->cl_layouts);
- spin_unlock(&clp->cl_lock);
- }
- list_for_each_entry(lp, &lo->segs, fi_list) {
- if (cmp_layout(lp->range.iomode, lseg->range.iomode) > 0)
+ assert_spin_locked(&lo->plh_inode->i_lock);
+ list_for_each_entry(lp, &lo->plh_segs, pls_list) {
+ if (cmp_layout(lp->pls_range.iomode, lseg->pls_range.iomode) > 0)
continue;
- list_add_tail(&lseg->fi_list, &lp->fi_list);
+ list_add_tail(&lseg->pls_list, &lp->pls_list);
dprintk("%s: inserted lseg %p "
"iomode %d offset %llu length %llu before "
"lp %p iomode %d offset %llu length %llu\n",
- __func__, lseg, lseg->range.iomode,
- lseg->range.offset, lseg->range.length,
- lp, lp->range.iomode, lp->range.offset,
- lp->range.length);
+ __func__, lseg, lseg->pls_range.iomode,
+ lseg->pls_range.offset, lseg->pls_range.length,
+ lp, lp->pls_range.iomode, lp->pls_range.offset,
+ lp->pls_range.length);
found = 1;
break;
}
if (!found) {
- list_add_tail(&lseg->fi_list, &lo->segs);
+ list_add_tail(&lseg->pls_list, &lo->plh_segs);
dprintk("%s: inserted lseg %p "
"iomode %d offset %llu length %llu at tail\n",
- __func__, lseg, lseg->range.iomode,
- lseg->range.offset, lseg->range.length);
+ __func__, lseg, lseg->pls_range.iomode,
+ lseg->pls_range.offset, lseg->pls_range.length);
}
- get_layout_hdr_locked(lo);
+ get_layout_hdr(lo);
dprintk("%s:Return\n", __func__);
}
@@ -493,11 +609,11 @@ alloc_init_layout_hdr(struct inode *ino)
lo = kzalloc(sizeof(struct pnfs_layout_hdr), GFP_KERNEL);
if (!lo)
return NULL;
- lo->refcount = 1;
- INIT_LIST_HEAD(&lo->layouts);
- INIT_LIST_HEAD(&lo->segs);
- seqlock_init(&lo->seqlock);
- lo->inode = ino;
+ atomic_set(&lo->plh_refcount, 1);
+ INIT_LIST_HEAD(&lo->plh_layouts);
+ INIT_LIST_HEAD(&lo->plh_segs);
+ INIT_LIST_HEAD(&lo->plh_bulk_recall);
+ lo->plh_inode = ino;
return lo;
}
@@ -510,9 +626,12 @@ pnfs_find_alloc_layout(struct inode *ino)
dprintk("%s Begin ino=%p layout=%p\n", __func__, ino, nfsi->layout);
assert_spin_locked(&ino->i_lock);
- if (nfsi->layout)
- return nfsi->layout;
-
+ if (nfsi->layout) {
+ if (test_bit(NFS_LAYOUT_DESTROYED, &nfsi->layout->plh_flags))
+ return NULL;
+ else
+ return nfsi->layout;
+ }
spin_unlock(&ino->i_lock);
new = alloc_init_layout_hdr(ino);
spin_lock(&ino->i_lock);
@@ -538,31 +657,32 @@ pnfs_find_alloc_layout(struct inode *ino)
static int
is_matching_lseg(struct pnfs_layout_segment *lseg, u32 iomode)
{
- return (iomode != IOMODE_RW || lseg->range.iomode == IOMODE_RW);
+ return (iomode != IOMODE_RW || lseg->pls_range.iomode == IOMODE_RW);
}
/*
* lookup range in layout
*/
static struct pnfs_layout_segment *
-pnfs_has_layout(struct pnfs_layout_hdr *lo, u32 iomode)
+pnfs_find_lseg(struct pnfs_layout_hdr *lo, u32 iomode)
{
struct pnfs_layout_segment *lseg, *ret = NULL;
dprintk("%s:Begin\n", __func__);
- assert_spin_locked(&lo->inode->i_lock);
- list_for_each_entry(lseg, &lo->segs, fi_list) {
- if (is_matching_lseg(lseg, iomode)) {
+ assert_spin_locked(&lo->plh_inode->i_lock);
+ list_for_each_entry(lseg, &lo->plh_segs, pls_list) {
+ if (test_bit(NFS_LSEG_VALID, &lseg->pls_flags) &&
+ is_matching_lseg(lseg, iomode)) {
ret = lseg;
break;
}
- if (cmp_layout(iomode, lseg->range.iomode) > 0)
+ if (cmp_layout(iomode, lseg->pls_range.iomode) > 0)
break;
}
dprintk("%s:Return lseg %p ref %d\n",
- __func__, ret, ret ? atomic_read(&ret->kref.refcount) : 0);
+ __func__, ret, ret ? atomic_read(&ret->pls_refcount) : 0);
return ret;
}
@@ -576,6 +696,7 @@ pnfs_update_layout(struct inode *ino,
enum pnfs_iomode iomode)
{
struct nfs_inode *nfsi = NFS_I(ino);
+ struct nfs_client *clp = NFS_SERVER(ino)->nfs_client;
struct pnfs_layout_hdr *lo;
struct pnfs_layout_segment *lseg = NULL;
@@ -588,25 +709,53 @@ pnfs_update_layout(struct inode *ino,
goto out_unlock;
}
- /* Check to see if the layout for the given range already exists */
- lseg = pnfs_has_layout(lo, iomode);
- if (lseg) {
- dprintk("%s: Using cached lseg %p for iomode %d)\n",
- __func__, lseg, iomode);
+ /* Do we even need to bother with this? */
+ if (test_bit(NFS4CLNT_LAYOUTRECALL, &clp->cl_state) ||
+ test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags)) {
+ dprintk("%s matches recall, use MDS\n", __func__);
goto out_unlock;
}
+ /* Check to see if the layout for the given range already exists */
+ lseg = pnfs_find_lseg(lo, iomode);
+ if (lseg)
+ goto out_unlock;
/* if LAYOUTGET already failed once we don't try again */
- if (test_bit(lo_fail_bit(iomode), &nfsi->layout->state))
+ if (test_bit(lo_fail_bit(iomode), &nfsi->layout->plh_flags))
+ goto out_unlock;
+
+ if (pnfs_layoutgets_blocked(lo, NULL, 0))
goto out_unlock;
+ atomic_inc(&lo->plh_outstanding);
- get_layout_hdr_locked(lo); /* Matched in nfs4_layoutget_release */
+ get_layout_hdr(lo);
+ if (list_empty(&lo->plh_segs)) {
+ /* The lo must be on the clp list if there is any
+ * chance of a CB_LAYOUTRECALL(FILE) coming in.
+ */
+ spin_lock(&clp->cl_lock);
+ BUG_ON(!list_empty(&lo->plh_layouts));
+ list_add_tail(&lo->plh_layouts, &clp->cl_layouts);
+ spin_unlock(&clp->cl_lock);
+ }
spin_unlock(&ino->i_lock);
lseg = send_layoutget(lo, ctx, iomode);
+ if (!lseg) {
+ spin_lock(&ino->i_lock);
+ if (list_empty(&lo->plh_segs)) {
+ spin_lock(&clp->cl_lock);
+ list_del_init(&lo->plh_layouts);
+ spin_unlock(&clp->cl_lock);
+ clear_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags);
+ }
+ spin_unlock(&ino->i_lock);
+ }
+ atomic_dec(&lo->plh_outstanding);
+ put_layout_hdr(lo);
out:
dprintk("%s end, state 0x%lx lseg %p\n", __func__,
- nfsi->layout->state, lseg);
+ nfsi->layout->plh_flags, lseg);
return lseg;
out_unlock:
spin_unlock(&ino->i_lock);
@@ -619,9 +768,21 @@ pnfs_layout_process(struct nfs4_layoutget *lgp)
struct pnfs_layout_hdr *lo = NFS_I(lgp->args.inode)->layout;
struct nfs4_layoutget_res *res = &lgp->res;
struct pnfs_layout_segment *lseg;
- struct inode *ino = lo->inode;
+ struct inode *ino = lo->plh_inode;
+ struct nfs_client *clp = NFS_SERVER(ino)->nfs_client;
int status = 0;
+ /* Verify we got what we asked for.
+ * Note that because the xdr parsing only accepts a single
+ * element array, this can fail even if the server is behaving
+ * correctly.
+ */
+ if (lgp->args.range.iomode > res->range.iomode ||
+ res->range.offset != 0 ||
+ res->range.length != NFS4_MAX_UINT64) {
+ status = -EINVAL;
+ goto out;
+ }
/* Inject layout blob into I/O device driver */
lseg = NFS_SERVER(ino)->pnfs_curr_ld->alloc_lseg(lo, res);
if (!lseg || IS_ERR(lseg)) {
@@ -635,16 +796,37 @@ pnfs_layout_process(struct nfs4_layoutget *lgp)
}
spin_lock(&ino->i_lock);
+ if (test_bit(NFS4CLNT_LAYOUTRECALL, &clp->cl_state) ||
+ test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags)) {
+ dprintk("%s forget reply due to recall\n", __func__);
+ goto out_forget_reply;
+ }
+
+ if (pnfs_layoutgets_blocked(lo, &res->stateid, 1)) {
+ dprintk("%s forget reply due to state\n", __func__);
+ goto out_forget_reply;
+ }
init_lseg(lo, lseg);
- lseg->range = res->range;
+ lseg->pls_range = res->range;
*lgp->lsegpp = lseg;
pnfs_insert_layout(lo, lseg);
+ if (res->return_on_close) {
+ set_bit(NFS_LSEG_ROC, &lseg->pls_flags);
+ set_bit(NFS_LAYOUT_ROC, &lo->plh_flags);
+ }
+
/* Done processing layoutget. Set the layout stateid */
- pnfs_set_layout_stateid(lo, &res->stateid);
+ pnfs_set_layout_stateid(lo, &res->stateid, false);
spin_unlock(&ino->i_lock);
out:
return status;
+
+out_forget_reply:
+ spin_unlock(&ino->i_lock);
+ lseg->pls_layout = lo;
+ NFS_SERVER(ino)->pnfs_curr_ld->free_lseg(lseg);
+ goto out;
}
/*
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index e12367d5048..e2612ea0cbe 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -30,11 +30,17 @@
#ifndef FS_NFS_PNFS_H
#define FS_NFS_PNFS_H
+enum {
+ NFS_LSEG_VALID = 0, /* cleared when lseg is recalled/returned */
+ NFS_LSEG_ROC, /* roc bit received from server */
+};
+
struct pnfs_layout_segment {
- struct list_head fi_list;
- struct pnfs_layout_range range;
- struct kref kref;
- struct pnfs_layout_hdr *layout;
+ struct list_head pls_list;
+ struct pnfs_layout_range pls_range;
+ atomic_t pls_refcount;
+ unsigned long pls_flags;
+ struct pnfs_layout_hdr *pls_layout;
};
#ifdef CONFIG_NFS_V4_1
@@ -44,7 +50,9 @@ struct pnfs_layout_segment {
enum {
NFS_LAYOUT_RO_FAILED = 0, /* get ro layout failed stop trying */
NFS_LAYOUT_RW_FAILED, /* get rw layout failed stop trying */
- NFS_LAYOUT_STATEID_SET, /* have a valid layout stateid */
+ NFS_LAYOUT_BULK_RECALL, /* bulk recall affecting layout */
+ NFS_LAYOUT_ROC, /* some lseg had roc bit set */
+ NFS_LAYOUT_DESTROYED, /* no new use of layout allowed */
};
/* Per-layout driver specific registration structure */
@@ -60,13 +68,16 @@ struct pnfs_layoutdriver_type {
};
struct pnfs_layout_hdr {
- unsigned long refcount;
- struct list_head layouts; /* other client layouts */
- struct list_head segs; /* layout segments list */
- seqlock_t seqlock; /* Protects the stateid */
- nfs4_stateid stateid;
- unsigned long state;
- struct inode *inode;
+ atomic_t plh_refcount;
+ struct list_head plh_layouts; /* other client layouts */
+ struct list_head plh_bulk_recall; /* clnt list of bulk recalls */
+ struct list_head plh_segs; /* layout segments list */
+ nfs4_stateid plh_stateid;
+ atomic_t plh_outstanding; /* number of RPCs out */
+ unsigned long plh_block_lgets; /* block LAYOUTGET if >0 */
+ u32 plh_barrier; /* ignore lower seqids */
+ unsigned long plh_flags;
+ struct inode *plh_inode;
};
struct pnfs_device {
@@ -134,17 +145,30 @@ extern int nfs4_proc_getdeviceinfo(struct nfs_server *server,
extern int nfs4_proc_layoutget(struct nfs4_layoutget *lgp);
/* pnfs.c */
+void get_layout_hdr(struct pnfs_layout_hdr *lo);
struct pnfs_layout_segment *
pnfs_update_layout(struct inode *ino, struct nfs_open_context *ctx,
enum pnfs_iomode access_type);
void set_pnfs_layoutdriver(struct nfs_server *, u32 id);
void unset_pnfs_layoutdriver(struct nfs_server *);
int pnfs_layout_process(struct nfs4_layoutget *lgp);
+void pnfs_free_lseg_list(struct list_head *tmp_list);
void pnfs_destroy_layout(struct nfs_inode *);
void pnfs_destroy_all_layouts(struct nfs_client *);
-void put_layout_hdr(struct inode *inode);
-void pnfs_get_layout_stateid(nfs4_stateid *dst, struct pnfs_layout_hdr *lo,
- struct nfs4_state *open_state);
+void put_layout_hdr(struct pnfs_layout_hdr *lo);
+void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo,
+ const nfs4_stateid *new,
+ bool update_barrier);
+int pnfs_choose_layoutget_stateid(nfs4_stateid *dst,
+ struct pnfs_layout_hdr *lo,
+ struct nfs4_state *open_state);
+int mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo,
+ struct list_head *tmp_list,
+ u32 iomode);
+bool pnfs_roc(struct inode *ino);
+void pnfs_roc_release(struct inode *ino);
+void pnfs_roc_set_barrier(struct inode *ino, u32 barrier);
+bool pnfs_roc_drain(struct inode *ino, u32 *barrier);
static inline int lo_fail_bit(u32 iomode)
@@ -176,6 +200,28 @@ pnfs_update_layout(struct inode *ino, struct nfs_open_context *ctx,
return NULL;
}
+static inline bool
+pnfs_roc(struct inode *ino)
+{
+ return false;
+}
+
+static inline void
+pnfs_roc_release(struct inode *ino)
+{
+}
+
+static inline void
+pnfs_roc_set_barrier(struct inode *ino, u32 barrier)
+{
+}
+
+static inline bool
+pnfs_roc_drain(struct inode *ino, u32 *barrier)
+{
+ return false;
+}
+
static inline void set_pnfs_layoutdriver(struct nfs_server *s, u32 id)
{
}
diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c
index 58e7f84fc1f..77d5e21c4ad 100644
--- a/fs/nfs/proc.c
+++ b/fs/nfs/proc.c
@@ -458,7 +458,7 @@ nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
fattr = nfs_alloc_fattr();
status = -ENOMEM;
if (fh == NULL || fattr == NULL)
- goto out;
+ goto out_free;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
nfs_mark_for_revalidate(dir);
@@ -471,6 +471,7 @@ nfs_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
if (status == 0)
status = nfs_instantiate(dentry, fh, fattr);
+out_free:
nfs_free_fattr(fattr);
nfs_free_fhandle(fh);
out:
@@ -731,7 +732,7 @@ const struct nfs_rpc_ops nfs_v2_clientops = {
.statfs = nfs_proc_statfs,
.fsinfo = nfs_proc_fsinfo,
.pathconf = nfs_proc_pathconf,
- .decode_dirent = nfs_decode_dirent,
+ .decode_dirent = nfs2_decode_dirent,
.read_setup = nfs_proc_read_setup,
.read_done = nfs_read_done,
.write_setup = nfs_proc_write_setup,
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 4100630c9a5..b68c8607770 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -598,7 +598,9 @@ static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss,
if (nfss->mountd_version || showdefaults)
seq_printf(m, ",mountvers=%u", nfss->mountd_version);
- if (nfss->mountd_port || showdefaults)
+ if ((nfss->mountd_port &&
+ nfss->mountd_port != (unsigned short)NFS_UNSPEC_PORT) ||
+ showdefaults)
seq_printf(m, ",mountport=%u", nfss->mountd_port);
nfs_show_mountd_netid(m, nfss, showdefaults);
@@ -2200,6 +2202,7 @@ static int nfs_set_super(struct super_block *s, void *data)
s->s_flags = sb_mntdata->mntflags;
s->s_fs_info = server;
+ s->s_d_op = server->nfs_client->rpc_ops->dentry_ops;
ret = set_anon_super(s, server);
if (ret == 0)
server->s_dev = s->s_dev;
@@ -2494,7 +2497,13 @@ static void nfs4_clone_super(struct super_block *sb,
sb->s_maxbytes = old_sb->s_maxbytes;
sb->s_time_gran = 1;
sb->s_op = old_sb->s_op;
- nfs_initialise_sb(sb);
+ /*
+ * The VFS shouldn't apply the umask to mode bits. We will do
+ * so ourselves when necessary.
+ */
+ sb->s_flags |= MS_POSIXACL;
+ sb->s_xattr = old_sb->s_xattr;
+ nfs_initialise_sb(sb);
}
/*
@@ -2504,6 +2513,12 @@ static void nfs4_fill_super(struct super_block *sb)
{
sb->s_time_gran = 1;
sb->s_op = &nfs4_sops;
+ /*
+ * The VFS shouldn't apply the umask to mode bits. We will do
+ * so ourselves when necessary.
+ */
+ sb->s_flags |= MS_POSIXACL;
+ sb->s_xattr = nfs4_xattr_handlers;
nfs_initialise_sb(sb);
}
diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c
index 8fe9eb47a97..e313a51acdd 100644
--- a/fs/nfs/unlink.c
+++ b/fs/nfs/unlink.c
@@ -429,7 +429,7 @@ nfs_async_rename(struct inode *old_dir, struct inode *new_dir,
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (data == NULL)
return ERR_PTR(-ENOMEM);
- task_setup_data.callback_data = data,
+ task_setup_data.callback_data = data;
data->cred = rpc_lookup_cred();
if (IS_ERR(data->cred)) {
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-26 08:09:52 +0000