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-rw-r--r--include/net/9p/9p.h281
-rw-r--r--include/net/9p/client.h53
-rw-r--r--include/net/9p/transport.h14
3 files changed, 107 insertions, 241 deletions
diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h
index 071fd7a8d78..27dfe85772b 100644
--- a/include/net/9p/9p.h
+++ b/include/net/9p/9p.h
@@ -40,6 +40,7 @@
* @P9_DEBUG_FID: fid allocation/deallocation tracking
* @P9_DEBUG_PKT: packet marshalling/unmarshalling
* @P9_DEBUG_FSC: FS-cache tracing
+ * @P9_DEBUG_VPKT: Verbose packet debugging (full packet dump)
*
* These flags are passed at mount time to turn on various levels of
* verbosity and tracing which will be output to the system logs.
@@ -57,33 +58,21 @@ enum p9_debug_flags {
P9_DEBUG_FID = (1<<9),
P9_DEBUG_PKT = (1<<10),
P9_DEBUG_FSC = (1<<11),
+ P9_DEBUG_VPKT = (1<<12),
};
#ifdef CONFIG_NET_9P_DEBUG
extern unsigned int p9_debug_level;
-
-#define P9_DPRINTK(level, format, arg...) \
-do { \
- if ((p9_debug_level & level) == level) {\
- if (level == P9_DEBUG_9P) \
- printk(KERN_NOTICE "(%8.8d) " \
- format , task_pid_nr(current) , ## arg); \
- else \
- printk(KERN_NOTICE "-- %s (%d): " \
- format , __func__, task_pid_nr(current) , ## arg); \
- } \
-} while (0)
-
+__printf(3, 4)
+void _p9_debug(enum p9_debug_flags level, const char *func,
+ const char *fmt, ...);
+#define p9_debug(level, fmt, ...) \
+ _p9_debug(level, __func__, fmt, ##__VA_ARGS__)
#else
-#define P9_DPRINTK(level, format, arg...) do { } while (0)
+#define p9_debug(level, fmt, ...) \
+ no_printk(fmt, ##__VA_ARGS__)
#endif
-#define P9_EPRINTK(level, format, arg...) \
-do { \
- printk(level "9p: %s (%d): " \
- format , __func__, task_pid_nr(current), ## arg); \
-} while (0)
-
/**
* enum p9_msg_t - 9P message types
* @P9_TLERROR: not used
@@ -119,7 +108,7 @@ do { \
* @P9_TREAD: request to transfer data from a file or directory
* @P9_RREAD: response with data requested
* @P9_TWRITE: reuqest to transfer data to a file
- * @P9_RWRITE: response with out much data was transfered to file
+ * @P9_RWRITE: response with out much data was transferred to file
* @P9_TCLUNK: forget about a handle to an entity within the file system
* @P9_RCLUNK: response when server has forgotten about the handle
* @P9_TREMOVE: request to remove an entity from the hierarchy
@@ -175,6 +164,10 @@ enum p9_msg_t {
P9_RLINK,
P9_TMKDIR = 72,
P9_RMKDIR,
+ P9_TRENAMEAT = 74,
+ P9_RRENAMEAT,
+ P9_TUNLINKAT = 76,
+ P9_RUNLINKAT,
P9_TVERSION = 100,
P9_RVERSION,
P9_TAUTH = 102,
@@ -241,10 +234,10 @@ enum p9_open_mode_t {
/**
* enum p9_perm_t - 9P permissions
- * @P9_DMDIR: mode bite for directories
+ * @P9_DMDIR: mode bit for directories
* @P9_DMAPPEND: mode bit for is append-only
* @P9_DMEXCL: mode bit for excluse use (only one open handle allowed)
- * @P9_DMMOUNT: mode bite for mount points
+ * @P9_DMMOUNT: mode bit for mount points
* @P9_DMAUTH: mode bit for authentication file
* @P9_DMTMP: mode bit for non-backed-up files
* @P9_DMSYMLINK: mode bit for symbolic links (9P2000.u)
@@ -278,6 +271,35 @@ enum p9_perm_t {
P9_DMSETVTX = 0x00010000,
};
+/* 9p2000.L open flags */
+#define P9_DOTL_RDONLY 00000000
+#define P9_DOTL_WRONLY 00000001
+#define P9_DOTL_RDWR 00000002
+#define P9_DOTL_NOACCESS 00000003
+#define P9_DOTL_CREATE 00000100
+#define P9_DOTL_EXCL 00000200
+#define P9_DOTL_NOCTTY 00000400
+#define P9_DOTL_TRUNC 00001000
+#define P9_DOTL_APPEND 00002000
+#define P9_DOTL_NONBLOCK 00004000
+#define P9_DOTL_DSYNC 00010000
+#define P9_DOTL_FASYNC 00020000
+#define P9_DOTL_DIRECT 00040000
+#define P9_DOTL_LARGEFILE 00100000
+#define P9_DOTL_DIRECTORY 00200000
+#define P9_DOTL_NOFOLLOW 00400000
+#define P9_DOTL_NOATIME 01000000
+#define P9_DOTL_CLOEXEC 02000000
+#define P9_DOTL_SYNC 04000000
+
+/* 9p2000.L at flags */
+#define P9_DOTL_AT_REMOVEDIR 0x200
+
+/* 9p2000.L lock type */
+#define P9_LOCK_TYPE_RDLCK 0
+#define P9_LOCK_TYPE_WRLCK 1
+#define P9_LOCK_TYPE_UNLCK 2
+
/**
* enum p9_qid_t - QID types
* @P9_QTDIR: directory
@@ -292,7 +314,7 @@ enum p9_perm_t {
*
* QID types are a subset of permissions - they are primarily
* used to differentiate semantics for a file system entity via
- * a jump-table. Their value is also the most signifigant 16 bits
+ * a jump-table. Their value is also the most significant 16 bits
* of the permission_t
*
* See Also: http://plan9.bell-labs.com/magic/man2html/2/stat
@@ -320,20 +342,8 @@ enum p9_qid_t {
/* Room for readdir header */
#define P9_READDIRHDRSZ 24
-/**
- * struct p9_str - length prefixed string type
- * @len: length of the string
- * @str: the string
- *
- * The protocol uses length prefixed strings for all
- * string data, so we replicate that for our internal
- * string members.
- */
-
-struct p9_str {
- u16 len;
- char *str;
-};
+/* size of header for zero copy read/write */
+#define P9_ZC_HDR_SZ 4096
/**
* struct p9_qid - file system entity information
@@ -362,20 +372,20 @@ struct p9_qid {
};
/**
- * struct p9_stat - file system metadata information
+ * struct p9_wstat - file system metadata information
* @size: length prefix for this stat structure instance
- * @type: the type of the server (equivilent to a major number)
- * @dev: the sub-type of the server (equivilent to a minor number)
+ * @type: the type of the server (equivalent to a major number)
+ * @dev: the sub-type of the server (equivalent to a minor number)
* @qid: unique id from the server of type &p9_qid
* @mode: Plan 9 format permissions of type &p9_perm_t
* @atime: Last access/read time
* @mtime: Last modify/write time
* @length: file length
- * @name: last element of path (aka filename) in type &p9_str
- * @uid: owner name in type &p9_str
- * @gid: group owner in type &p9_str
- * @muid: last modifier in type &p9_str
- * @extension: area used to encode extended UNIX support in type &p9_str
+ * @name: last element of path (aka filename)
+ * @uid: owner name
+ * @gid: group owner
+ * @muid: last modifier
+ * @extension: area used to encode extended UNIX support
* @n_uid: numeric user id of owner (part of 9p2000.u extension)
* @n_gid: numeric group id (part of 9p2000.u extension)
* @n_muid: numeric user id of laster modifier (part of 9p2000.u extension)
@@ -397,17 +407,17 @@ struct p9_wstat {
char *gid;
char *muid;
char *extension; /* 9p2000.u extensions */
- u32 n_uid; /* 9p2000.u extensions */
- u32 n_gid; /* 9p2000.u extensions */
- u32 n_muid; /* 9p2000.u extensions */
+ kuid_t n_uid; /* 9p2000.u extensions */
+ kgid_t n_gid; /* 9p2000.u extensions */
+ kuid_t n_muid; /* 9p2000.u extensions */
};
struct p9_stat_dotl {
u64 st_result_mask;
struct p9_qid qid;
u32 st_mode;
- u32 st_uid;
- u32 st_gid;
+ kuid_t st_uid;
+ kgid_t st_gid;
u64 st_nlink;
u64 st_rdev;
u64 st_size;
@@ -461,8 +471,8 @@ struct p9_stat_dotl {
struct p9_iattr_dotl {
u32 valid;
u32 mode;
- u32 uid;
- u32 gid;
+ kuid_t uid;
+ kgid_t gid;
u64 size;
u64 atime_sec;
u64 atime_nsec;
@@ -512,11 +522,6 @@ struct p9_getlock {
char *client_id;
};
-/* Structures for Protocol Operations */
-struct p9_tstatfs {
- u32 fid;
-};
-
struct p9_rstatfs {
u32 type;
u32 bsize;
@@ -529,166 +534,13 @@ struct p9_rstatfs {
u32 namelen;
};
-struct p9_trename {
- u32 fid;
- u32 newdirfid;
- struct p9_str name;
-};
-
-struct p9_rrename {
-};
-
-struct p9_tversion {
- u32 msize;
- struct p9_str version;
-};
-
-struct p9_rversion {
- u32 msize;
- struct p9_str version;
-};
-
-struct p9_tauth {
- u32 afid;
- struct p9_str uname;
- struct p9_str aname;
- u32 n_uname; /* 9P2000.u extensions */
-};
-
-struct p9_rauth {
- struct p9_qid qid;
-};
-
-struct p9_rerror {
- struct p9_str error;
- u32 errno; /* 9p2000.u extension */
-};
-
-struct p9_tflush {
- u16 oldtag;
-};
-
-struct p9_rflush {
-};
-
-struct p9_tattach {
- u32 fid;
- u32 afid;
- struct p9_str uname;
- struct p9_str aname;
- u32 n_uname; /* 9P2000.u extensions */
-};
-
-struct p9_rattach {
- struct p9_qid qid;
-};
-
-struct p9_twalk {
- u32 fid;
- u32 newfid;
- u16 nwname;
- struct p9_str wnames[16];
-};
-
-struct p9_rwalk {
- u16 nwqid;
- struct p9_qid wqids[16];
-};
-
-struct p9_topen {
- u32 fid;
- u8 mode;
-};
-
-struct p9_ropen {
- struct p9_qid qid;
- u32 iounit;
-};
-
-struct p9_tcreate {
- u32 fid;
- struct p9_str name;
- u32 perm;
- u8 mode;
- struct p9_str extension;
-};
-
-struct p9_rcreate {
- struct p9_qid qid;
- u32 iounit;
-};
-
-struct p9_tread {
- u32 fid;
- u64 offset;
- u32 count;
-};
-
-struct p9_rread {
- u32 count;
- u8 *data;
-};
-
-struct p9_twrite {
- u32 fid;
- u64 offset;
- u32 count;
- u8 *data;
-};
-
-struct p9_rwrite {
- u32 count;
-};
-
-struct p9_treaddir {
- u32 fid;
- u64 offset;
- u32 count;
-};
-
-struct p9_rreaddir {
- u32 count;
- u8 *data;
-};
-
-
-struct p9_tclunk {
- u32 fid;
-};
-
-struct p9_rclunk {
-};
-
-struct p9_tremove {
- u32 fid;
-};
-
-struct p9_rremove {
-};
-
-struct p9_tstat {
- u32 fid;
-};
-
-struct p9_rstat {
- struct p9_wstat stat;
-};
-
-struct p9_twstat {
- u32 fid;
- struct p9_wstat stat;
-};
-
-struct p9_rwstat {
-};
-
/**
* struct p9_fcall - primary packet structure
* @size: prefixed length of the structure
* @id: protocol operating identifier of type &p9_msg_t
* @tag: transaction id of the request
- * @offset: used by marshalling routines to track currentposition in buffer
- * @capacity: used by marshalling routines to track total capacity
+ * @offset: used by marshalling routines to track current position in buffer
+ * @capacity: used by marshalling routines to track total malloc'd capacity
* @sdata: payload
*
* &p9_fcall represents the structure for all 9P RPC
@@ -706,7 +558,7 @@ struct p9_fcall {
size_t offset;
size_t capacity;
- uint8_t *sdata;
+ u8 *sdata;
};
struct p9_idpool;
@@ -720,7 +572,6 @@ void p9_idpool_put(int id, struct p9_idpool *p);
int p9_idpool_check(int id, struct p9_idpool *p);
int p9_error_init(void);
-int p9_errstr2errno(char *, int);
int p9_trans_fd_init(void);
void p9_trans_fd_exit(void);
#endif /* NET_9P_H */
diff --git a/include/net/9p/client.h b/include/net/9p/client.h
index 83ba6a4d58a..6fab66c5c5a 100644
--- a/include/net/9p/client.h
+++ b/include/net/9p/client.h
@@ -26,6 +26,8 @@
#ifndef NET_9P_CLIENT_H
#define NET_9P_CLIENT_H
+#include <linux/utsname.h>
+
/* Number of requests per row */
#define P9_ROW_MAXTAG 255
@@ -36,9 +38,9 @@
*/
enum p9_proto_versions{
- p9_proto_legacy = 0,
- p9_proto_2000u = 1,
- p9_proto_2000L = 2,
+ p9_proto_legacy,
+ p9_proto_2000u,
+ p9_proto_2000L,
};
@@ -60,12 +62,11 @@ enum p9_trans_status {
};
/**
- * enum p9_req_status_t - virtio request status
+ * enum p9_req_status_t - status of a request
* @REQ_STATUS_IDLE: request slot unused
* @REQ_STATUS_ALLOC: request has been allocated but not sent
* @REQ_STATUS_UNSENT: request waiting to be sent
* @REQ_STATUS_SENT: request sent to server
- * @REQ_STATUS_FLSH: a flush has been sent for this request
* @REQ_STATUS_RCVD: response received from server
* @REQ_STATUS_FLSHD: request has been flushed
* @REQ_STATUS_ERROR: request encountered an error on the client side
@@ -81,7 +82,6 @@ enum p9_req_status_t {
REQ_STATUS_ALLOC,
REQ_STATUS_UNSENT,
REQ_STATUS_SENT,
- REQ_STATUS_FLSH,
REQ_STATUS_RCVD,
REQ_STATUS_FLSHD,
REQ_STATUS_ERROR,
@@ -101,7 +101,7 @@ enum p9_req_status_t {
* Transport use an array to track outstanding requests
* instead of a list. While this may incurr overhead during initial
* allocation or expansion, it makes request lookup much easier as the
- * tag id is a index into an array. (We use tag+1 so that we can accomodate
+ * tag id is a index into an array. (We use tag+1 so that we can accommodate
* the -1 tag for the T_VERSION request).
* This also has the nice effect of only having to allocate wait_queues
* once, instead of constantly allocating and freeing them. Its possible
@@ -128,12 +128,12 @@ struct p9_req_t {
* @proto_version: 9P protocol version to use
* @trans_mod: module API instantiated with this client
* @trans: tranport instance state and API
- * @conn: connection state information used by trans_fd
* @fidpool: fid handle accounting for session
* @fidlist: List of active fid handles
* @tagpool - transaction id accounting for session
* @reqs - 2D array of requests
* @max_tag - current maximum tag id allocated
+ * @name - node name used as client id
*
* The client structure is used to keep track of various per-client
* state that has been instantiated.
@@ -151,12 +151,11 @@ struct p9_req_t {
struct p9_client {
spinlock_t lock; /* protect client structure */
- int msize;
+ unsigned int msize;
unsigned char proto_version;
struct p9_trans_module *trans_mod;
enum p9_trans_status status;
void *trans;
- struct p9_conn *conn;
struct p9_idpool *fidpool;
struct list_head fidlist;
@@ -164,6 +163,8 @@ struct p9_client {
struct p9_idpool *tagpool;
struct p9_req_t *reqs[P9_ROW_MAXTAG];
int max_tag;
+
+ char name[__NEW_UTS_LEN + 1];
};
/**
@@ -187,12 +188,12 @@ struct p9_fid {
int mode;
struct p9_qid qid;
u32 iounit;
- uid_t uid;
+ kuid_t uid;
void *rdir;
struct list_head flist;
- struct list_head dlist; /* list of all fids attached to a dentry */
+ struct hlist_node dlist; /* list of all fids attached to a dentry */
};
/**
@@ -211,33 +212,37 @@ struct p9_dirent {
};
int p9_client_statfs(struct p9_fid *fid, struct p9_rstatfs *sb);
-int p9_client_rename(struct p9_fid *fid, struct p9_fid *newdirfid, char *name);
+int p9_client_rename(struct p9_fid *fid, struct p9_fid *newdirfid,
+ const char *name);
+int p9_client_renameat(struct p9_fid *olddirfid, const char *old_name,
+ struct p9_fid *newdirfid, const char *new_name);
struct p9_client *p9_client_create(const char *dev_name, char *options);
void p9_client_destroy(struct p9_client *clnt);
void p9_client_disconnect(struct p9_client *clnt);
void p9_client_begin_disconnect(struct p9_client *clnt);
struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
- char *uname, u32 n_uname, char *aname);
-struct p9_fid *p9_client_walk(struct p9_fid *oldfid, int nwname, char **wnames,
- int clone);
+ char *uname, kuid_t n_uname, char *aname);
+struct p9_fid *p9_client_walk(struct p9_fid *oldfid, uint16_t nwname,
+ char **wnames, int clone);
int p9_client_open(struct p9_fid *fid, int mode);
int p9_client_fcreate(struct p9_fid *fid, char *name, u32 perm, int mode,
char *extension);
int p9_client_link(struct p9_fid *fid, struct p9_fid *oldfid, char *newname);
-int p9_client_symlink(struct p9_fid *fid, char *name, char *symname, gid_t gid,
+int p9_client_symlink(struct p9_fid *fid, char *name, char *symname, kgid_t gid,
struct p9_qid *qid);
int p9_client_create_dotl(struct p9_fid *ofid, char *name, u32 flags, u32 mode,
- gid_t gid, struct p9_qid *qid);
+ kgid_t gid, struct p9_qid *qid);
int p9_client_clunk(struct p9_fid *fid);
int p9_client_fsync(struct p9_fid *fid, int datasync);
int p9_client_remove(struct p9_fid *fid);
+int p9_client_unlinkat(struct p9_fid *dfid, const char *name, int flags);
int p9_client_read(struct p9_fid *fid, char *data, char __user *udata,
u64 offset, u32 count);
int p9_client_write(struct p9_fid *fid, char *data, const char __user *udata,
u64 offset, u32 count);
int p9_client_readdir(struct p9_fid *fid, char *data, u32 count, u64 offset);
-int p9dirent_read(char *buf, int len, struct p9_dirent *dirent,
- int proto_version);
+int p9dirent_read(struct p9_client *clnt, char *buf, int len,
+ struct p9_dirent *dirent);
struct p9_wstat *p9_client_stat(struct p9_fid *fid);
int p9_client_wstat(struct p9_fid *fid, struct p9_wstat *wst);
int p9_client_setattr(struct p9_fid *fid, struct p9_iattr_dotl *attr);
@@ -246,16 +251,16 @@ struct p9_stat_dotl *p9_client_getattr_dotl(struct p9_fid *fid,
u64 request_mask);
int p9_client_mknod_dotl(struct p9_fid *oldfid, char *name, int mode,
- dev_t rdev, gid_t gid, struct p9_qid *);
+ dev_t rdev, kgid_t gid, struct p9_qid *);
int p9_client_mkdir_dotl(struct p9_fid *fid, char *name, int mode,
- gid_t gid, struct p9_qid *);
+ kgid_t gid, struct p9_qid *);
int p9_client_lock_dotl(struct p9_fid *fid, struct p9_flock *flock, u8 *status);
int p9_client_getlock_dotl(struct p9_fid *fid, struct p9_getlock *fl);
struct p9_req_t *p9_tag_lookup(struct p9_client *, u16);
-void p9_client_cb(struct p9_client *c, struct p9_req_t *req);
+void p9_client_cb(struct p9_client *c, struct p9_req_t *req, int status);
int p9_parse_header(struct p9_fcall *, int32_t *, int8_t *, int16_t *, int);
-int p9stat_read(char *, int, struct p9_wstat *, int);
+int p9stat_read(struct p9_client *, char *, int, struct p9_wstat *);
void p9stat_free(struct p9_wstat *);
int p9_is_proto_dotu(struct p9_client *clnt);
diff --git a/include/net/9p/transport.h b/include/net/9p/transport.h
index 6d5886efb10..d9fa68f26c4 100644
--- a/include/net/9p/transport.h
+++ b/include/net/9p/transport.h
@@ -26,21 +26,28 @@
#ifndef NET_9P_TRANSPORT_H
#define NET_9P_TRANSPORT_H
+#define P9_DEF_MIN_RESVPORT (665U)
+#define P9_DEF_MAX_RESVPORT (1023U)
+
/**
* struct p9_trans_module - transport module interface
* @list: used to maintain a list of currently available transports
* @name: the human-readable name of the transport
* @maxsize: transport provided maximum packet size
+ * @pref: Preferences of this transport
* @def: set if this transport should be considered the default
* @create: member function to create a new connection on this transport
+ * @close: member function to discard a connection on this transport
* @request: member function to issue a request to the transport
* @cancel: member function to cancel a request (if it hasn't been sent)
+ * @cancelled: member function to notify that a cancelled request will not
+ * not receive a reply
*
* This is the basic API for a transport module which is registered by the
* transport module with the 9P core network module and used by the client
* to instantiate a new connection on a transport.
*
- * BUGS: the transport module list isn't protected.
+ * The transport module list is protected by v9fs_trans_lock.
*/
struct p9_trans_module {
@@ -53,11 +60,14 @@ struct p9_trans_module {
void (*close) (struct p9_client *);
int (*request) (struct p9_client *, struct p9_req_t *req);
int (*cancel) (struct p9_client *, struct p9_req_t *req);
+ int (*cancelled)(struct p9_client *, struct p9_req_t *req);
+ int (*zc_request)(struct p9_client *, struct p9_req_t *,
+ char *, char *, int , int, int, int);
};
void v9fs_register_trans(struct p9_trans_module *m);
void v9fs_unregister_trans(struct p9_trans_module *m);
-struct p9_trans_module *v9fs_get_trans_by_name(const substring_t *name);
+struct p9_trans_module *v9fs_get_trans_by_name(char *s);
struct p9_trans_module *v9fs_get_default_trans(void);
void v9fs_put_trans(struct p9_trans_module *m);
#endif /* NET_9P_TRANSPORT_H */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 17:31:40 +0000