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Diffstat (limited to 'fs/lockd/svc4proc.c')
-rw-r--r--fs/lockd/svc4proc.c185
1 files changed, 77 insertions, 108 deletions
diff --git a/fs/lockd/svc4proc.c b/fs/lockd/svc4proc.c
index a2dd9ccb9b3..b147d1ae71f 100644
--- a/fs/lockd/svc4proc.c
+++ b/fs/lockd/svc4proc.c
@@ -9,37 +9,31 @@
#include <linux/types.h>
#include <linux/time.h>
-#include <linux/slab.h>
-#include <linux/in.h>
-#include <linux/sunrpc/svc.h>
-#include <linux/sunrpc/clnt.h>
-#include <linux/nfsd/nfsd.h>
#include <linux/lockd/lockd.h>
#include <linux/lockd/share.h>
-#include <linux/lockd/sm_inter.h>
-
+#include <linux/sunrpc/svc_xprt.h>
#define NLMDBG_FACILITY NLMDBG_CLIENT
/*
* Obtain client and file from arguments
*/
-static u32
+static __be32
nlm4svc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp,
struct nlm_host **hostp, struct nlm_file **filp)
{
struct nlm_host *host = NULL;
struct nlm_file *file = NULL;
struct nlm_lock *lock = &argp->lock;
- u32 error = 0;
+ __be32 error = 0;
/* nfsd callbacks must have been installed for this procedure */
if (!nlmsvc_ops)
return nlm_lck_denied_nolocks;
/* Obtain host handle */
- if (!(host = nlmsvc_lookup_host(rqstp))
- || (argp->monitor && !host->h_monitored && nsm_monitor(host) < 0))
+ if (!(host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len))
+ || (argp->monitor && nsm_monitor(host) < 0))
goto no_locks;
*hostp = host;
@@ -58,8 +52,7 @@ nlm4svc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp,
return 0;
no_locks:
- if (host)
- nlm_release_host(host);
+ nlmsvc_release_host(host);
if (error)
return error;
return nlm_lck_denied_nolocks;
@@ -68,7 +61,7 @@ no_locks:
/*
* NULL: Test for presence of service
*/
-static int
+static __be32
nlm4svc_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
{
dprintk("lockd: NULL called\n");
@@ -78,55 +71,48 @@ nlm4svc_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
/*
* TEST: Check for conflicting lock
*/
-static int
+static __be32
nlm4svc_proc_test(struct svc_rqst *rqstp, struct nlm_args *argp,
struct nlm_res *resp)
{
struct nlm_host *host;
struct nlm_file *file;
+ __be32 rc = rpc_success;
dprintk("lockd: TEST4 called\n");
resp->cookie = argp->cookie;
- /* Don't accept test requests during grace period */
- if (nlmsvc_grace_period) {
- resp->status = nlm_lck_denied_grace_period;
- return rpc_success;
- }
-
/* Obtain client and file */
if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
- return rpc_success;
+ return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
/* Now check for conflicting locks */
- resp->status = nlmsvc_testlock(file, &argp->lock, &resp->lock);
+ resp->status = nlmsvc_testlock(rqstp, file, host, &argp->lock, &resp->lock, &resp->cookie);
+ if (resp->status == nlm_drop_reply)
+ rc = rpc_drop_reply;
+ else
+ dprintk("lockd: TEST4 status %d\n", ntohl(resp->status));
- dprintk("lockd: TEST4 status %d\n", ntohl(resp->status));
- nlm_release_host(host);
+ nlmsvc_release_host(host);
nlm_release_file(file);
- return rpc_success;
+ return rc;
}
-static int
+static __be32
nlm4svc_proc_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
struct nlm_res *resp)
{
struct nlm_host *host;
struct nlm_file *file;
+ __be32 rc = rpc_success;
dprintk("lockd: LOCK called\n");
resp->cookie = argp->cookie;
- /* Don't accept new lock requests during grace period */
- if (nlmsvc_grace_period && !argp->reclaim) {
- resp->status = nlm_lck_denied_grace_period;
- return rpc_success;
- }
-
/* Obtain client and file */
if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
- return rpc_success;
+ return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
#if 0
/* If supplied state doesn't match current state, we assume it's
@@ -141,16 +127,20 @@ nlm4svc_proc_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
#endif
/* Now try to lock the file */
- resp->status = nlmsvc_lock(rqstp, file, &argp->lock,
- argp->block, &argp->cookie);
-
- dprintk("lockd: LOCK status %d\n", ntohl(resp->status));
- nlm_release_host(host);
+ resp->status = nlmsvc_lock(rqstp, file, host, &argp->lock,
+ argp->block, &argp->cookie,
+ argp->reclaim);
+ if (resp->status == nlm_drop_reply)
+ rc = rpc_drop_reply;
+ else
+ dprintk("lockd: LOCK status %d\n", ntohl(resp->status));
+
+ nlmsvc_release_host(host);
nlm_release_file(file);
- return rpc_success;
+ return rc;
}
-static int
+static __be32
nlm4svc_proc_cancel(struct svc_rqst *rqstp, struct nlm_args *argp,
struct nlm_res *resp)
{
@@ -162,20 +152,20 @@ nlm4svc_proc_cancel(struct svc_rqst *rqstp, struct nlm_args *argp,
resp->cookie = argp->cookie;
/* Don't accept requests during grace period */
- if (nlmsvc_grace_period) {
+ if (locks_in_grace(SVC_NET(rqstp))) {
resp->status = nlm_lck_denied_grace_period;
return rpc_success;
}
/* Obtain client and file */
if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
- return rpc_success;
+ return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
/* Try to cancel request. */
- resp->status = nlmsvc_cancel_blocked(file, &argp->lock);
+ resp->status = nlmsvc_cancel_blocked(SVC_NET(rqstp), file, &argp->lock);
dprintk("lockd: CANCEL status %d\n", ntohl(resp->status));
- nlm_release_host(host);
+ nlmsvc_release_host(host);
nlm_release_file(file);
return rpc_success;
}
@@ -183,7 +173,7 @@ nlm4svc_proc_cancel(struct svc_rqst *rqstp, struct nlm_args *argp,
/*
* UNLOCK: release a lock
*/
-static int
+static __be32
nlm4svc_proc_unlock(struct svc_rqst *rqstp, struct nlm_args *argp,
struct nlm_res *resp)
{
@@ -195,20 +185,20 @@ nlm4svc_proc_unlock(struct svc_rqst *rqstp, struct nlm_args *argp,
resp->cookie = argp->cookie;
/* Don't accept new lock requests during grace period */
- if (nlmsvc_grace_period) {
+ if (locks_in_grace(SVC_NET(rqstp))) {
resp->status = nlm_lck_denied_grace_period;
return rpc_success;
}
/* Obtain client and file */
if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
- return rpc_success;
+ return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
/* Now try to remove the lock */
- resp->status = nlmsvc_unlock(file, &argp->lock);
+ resp->status = nlmsvc_unlock(SVC_NET(rqstp), file, &argp->lock);
dprintk("lockd: UNLOCK status %d\n", ntohl(resp->status));
- nlm_release_host(host);
+ nlmsvc_release_host(host);
nlm_release_file(file);
return rpc_success;
}
@@ -217,14 +207,14 @@ nlm4svc_proc_unlock(struct svc_rqst *rqstp, struct nlm_args *argp,
* GRANTED: A server calls us to tell that a process' lock request
* was granted
*/
-static int
+static __be32
nlm4svc_proc_granted(struct svc_rqst *rqstp, struct nlm_args *argp,
struct nlm_res *resp)
{
resp->cookie = argp->cookie;
dprintk("lockd: GRANTED called\n");
- resp->status = nlmclnt_grant(&rqstp->rq_addr, &argp->lock);
+ resp->status = nlmclnt_grant(svc_addr(rqstp), &argp->lock);
dprintk("lockd: GRANTED status %d\n", ntohl(resp->status));
return rpc_success;
}
@@ -234,13 +224,13 @@ nlm4svc_proc_granted(struct svc_rqst *rqstp, struct nlm_args *argp,
*/
static void nlm4svc_callback_exit(struct rpc_task *task, void *data)
{
- dprintk("lockd: %4d callback returned %d\n", task->tk_pid,
+ dprintk("lockd: %5u callback returned %d\n", task->tk_pid,
-task->tk_status);
}
static void nlm4svc_callback_release(void *data)
{
- nlm_release_call(data);
+ nlmsvc_release_call(data);
}
static const struct rpc_call_ops nlm4svc_callback_ops = {
@@ -253,24 +243,27 @@ static const struct rpc_call_ops nlm4svc_callback_ops = {
* because we send the callback before the reply proper. I hope this
* doesn't break any clients.
*/
-static int nlm4svc_callback(struct svc_rqst *rqstp, u32 proc, struct nlm_args *argp,
- int (*func)(struct svc_rqst *, struct nlm_args *, struct nlm_res *))
+static __be32 nlm4svc_callback(struct svc_rqst *rqstp, u32 proc, struct nlm_args *argp,
+ __be32 (*func)(struct svc_rqst *, struct nlm_args *, struct nlm_res *))
{
struct nlm_host *host;
struct nlm_rqst *call;
- int stat;
+ __be32 stat;
- host = nlmsvc_lookup_host(rqstp);
+ host = nlmsvc_lookup_host(rqstp,
+ argp->lock.caller,
+ argp->lock.len);
if (host == NULL)
return rpc_system_err;
call = nlm_alloc_call(host);
+ nlmsvc_release_host(host);
if (call == NULL)
return rpc_system_err;
stat = func(rqstp, argp, &call->a_res);
if (stat != 0) {
- nlm_release_call(call);
+ nlmsvc_release_call(call);
return stat;
}
@@ -280,35 +273,35 @@ static int nlm4svc_callback(struct svc_rqst *rqstp, u32 proc, struct nlm_args *a
return rpc_success;
}
-static int nlm4svc_proc_test_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
+static __be32 nlm4svc_proc_test_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
void *resp)
{
dprintk("lockd: TEST_MSG called\n");
return nlm4svc_callback(rqstp, NLMPROC_TEST_RES, argp, nlm4svc_proc_test);
}
-static int nlm4svc_proc_lock_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
+static __be32 nlm4svc_proc_lock_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
void *resp)
{
dprintk("lockd: LOCK_MSG called\n");
return nlm4svc_callback(rqstp, NLMPROC_LOCK_RES, argp, nlm4svc_proc_lock);
}
-static int nlm4svc_proc_cancel_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
+static __be32 nlm4svc_proc_cancel_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
void *resp)
{
dprintk("lockd: CANCEL_MSG called\n");
return nlm4svc_callback(rqstp, NLMPROC_CANCEL_RES, argp, nlm4svc_proc_cancel);
}
-static int nlm4svc_proc_unlock_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
+static __be32 nlm4svc_proc_unlock_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
void *resp)
{
dprintk("lockd: UNLOCK_MSG called\n");
return nlm4svc_callback(rqstp, NLMPROC_UNLOCK_RES, argp, nlm4svc_proc_unlock);
}
-static int nlm4svc_proc_granted_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
+static __be32 nlm4svc_proc_granted_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
void *resp)
{
dprintk("lockd: GRANTED_MSG called\n");
@@ -318,7 +311,7 @@ static int nlm4svc_proc_granted_msg(struct svc_rqst *rqstp, struct nlm_args *arg
/*
* SHARE: create a DOS share or alter existing share.
*/
-static int
+static __be32
nlm4svc_proc_share(struct svc_rqst *rqstp, struct nlm_args *argp,
struct nlm_res *resp)
{
@@ -330,20 +323,20 @@ nlm4svc_proc_share(struct svc_rqst *rqstp, struct nlm_args *argp,
resp->cookie = argp->cookie;
/* Don't accept new lock requests during grace period */
- if (nlmsvc_grace_period && !argp->reclaim) {
+ if (locks_in_grace(SVC_NET(rqstp)) && !argp->reclaim) {
resp->status = nlm_lck_denied_grace_period;
return rpc_success;
}
/* Obtain client and file */
if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
- return rpc_success;
+ return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
/* Now try to create the share */
resp->status = nlmsvc_share_file(host, file, argp);
dprintk("lockd: SHARE status %d\n", ntohl(resp->status));
- nlm_release_host(host);
+ nlmsvc_release_host(host);
nlm_release_file(file);
return rpc_success;
}
@@ -351,7 +344,7 @@ nlm4svc_proc_share(struct svc_rqst *rqstp, struct nlm_args *argp,
/*
* UNSHARE: Release a DOS share.
*/
-static int
+static __be32
nlm4svc_proc_unshare(struct svc_rqst *rqstp, struct nlm_args *argp,
struct nlm_res *resp)
{
@@ -363,20 +356,20 @@ nlm4svc_proc_unshare(struct svc_rqst *rqstp, struct nlm_args *argp,
resp->cookie = argp->cookie;
/* Don't accept requests during grace period */
- if (nlmsvc_grace_period) {
+ if (locks_in_grace(SVC_NET(rqstp))) {
resp->status = nlm_lck_denied_grace_period;
return rpc_success;
}
/* Obtain client and file */
if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
- return rpc_success;
+ return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
/* Now try to lock the file */
resp->status = nlmsvc_unshare_file(host, file, argp);
dprintk("lockd: UNSHARE status %d\n", ntohl(resp->status));
- nlm_release_host(host);
+ nlmsvc_release_host(host);
nlm_release_file(file);
return rpc_success;
}
@@ -384,7 +377,7 @@ nlm4svc_proc_unshare(struct svc_rqst *rqstp, struct nlm_args *argp,
/*
* NM_LOCK: Create an unmonitored lock
*/
-static int
+static __be32
nlm4svc_proc_nm_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
struct nlm_res *resp)
{
@@ -397,7 +390,7 @@ nlm4svc_proc_nm_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
/*
* FREE_ALL: Release all locks and shares held by client
*/
-static int
+static __be32
nlm4svc_proc_free_all(struct svc_rqst *rqstp, struct nlm_args *argp,
void *resp)
{
@@ -408,58 +401,34 @@ nlm4svc_proc_free_all(struct svc_rqst *rqstp, struct nlm_args *argp,
return rpc_success;
nlmsvc_free_host_resources(host);
- nlm_release_host(host);
+ nlmsvc_release_host(host);
return rpc_success;
}
/*
* SM_NOTIFY: private callback from statd (not part of official NLM proto)
*/
-static int
+static __be32
nlm4svc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
void *resp)
{
- struct sockaddr_in saddr = rqstp->rq_addr;
- int vers = argp->vers;
- int prot = argp->proto >> 1;
-
- struct nlm_host *host;
-
dprintk("lockd: SM_NOTIFY called\n");
- if (saddr.sin_addr.s_addr != htonl(INADDR_LOOPBACK)
- || ntohs(saddr.sin_port) >= 1024) {
- printk(KERN_WARNING
- "lockd: rejected NSM callback from %08x:%d\n",
- ntohl(rqstp->rq_addr.sin_addr.s_addr),
- ntohs(rqstp->rq_addr.sin_port));
+
+ if (!nlm_privileged_requester(rqstp)) {
+ char buf[RPC_MAX_ADDRBUFLEN];
+ printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
+ svc_print_addr(rqstp, buf, sizeof(buf)));
return rpc_system_err;
}
- /* Obtain the host pointer for this NFS server and try to
- * reclaim all locks we hold on this server.
- */
- saddr.sin_addr.s_addr = argp->addr;
-
- if ((argp->proto & 1)==0) {
- if ((host = nlmclnt_lookup_host(&saddr, prot, vers)) != NULL) {
- nlmclnt_recovery(host, argp->state);
- nlm_release_host(host);
- }
- } else {
- /* If we run on an NFS server, delete all locks held by the client */
-
- if ((host = nlm_lookup_host(1, &saddr, prot, vers)) != NULL) {
- nlmsvc_free_host_resources(host);
- nlm_release_host(host);
- }
- }
+ nlm_host_rebooted(argp);
return rpc_success;
}
/*
* client sent a GRANTED_RES, let's remove the associated block
*/
-static int
+static __be32
nlm4svc_proc_granted_res(struct svc_rqst *rqstp, struct nlm_res *argp,
void *resp)
{
@@ -468,7 +437,7 @@ nlm4svc_proc_granted_res(struct svc_rqst *rqstp, struct nlm_res *argp,
dprintk("lockd: GRANTED_RES called\n");
- nlmsvc_grant_reply(rqstp, &argp->cookie, argp->status);
+ nlmsvc_grant_reply(&argp->cookie, argp->status);
return rpc_success;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-06 15:33:26 +0000