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Latchesar Ionkovbd238fb2007-07-10 17:57:28 -05001/*
2 * include/net/9p/9p.h
3 *
4 * 9P protocol definitions.
5 *
6 * Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net>
7 * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
8 * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2
12 * as published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to:
21 * Free Software Foundation
22 * 51 Franklin Street, Fifth Floor
23 * Boston, MA 02111-1301 USA
24 *
25 */
26
27#ifndef NET_9P_H
28#define NET_9P_H
29
30#ifdef CONFIG_NET_9P_DEBUG
31
Eric Van Hensbergenee443992008-03-05 07:08:09 -060032/**
33 * enum p9_debug_flags - bits for mount time debug parameter
34 * @P9_DEBUG_ERROR: more verbose error messages including original error string
35 * @P9_DEBUG_9P: 9P protocol tracing
36 * @P9_DEBUG_VFS: VFS API tracing
37 * @P9_DEBUG_CONV: protocol conversion tracing
38 * @P9_DEBUG_MUX: trace management of concurrent transactions
39 * @P9_DEBUG_TRANS: transport tracing
40 * @P9_DEBUG_SLABS: memory management tracing
41 * @P9_DEBUG_FCALL: verbose dump of protocol messages
Eric Van Hensbergen51a87c52008-10-16 08:30:07 -050042 * @P9_DEBUG_FID: fid allocation/deallocation tracking
Eric Van Hensbergenee443992008-03-05 07:08:09 -060043 *
44 * These flags are passed at mount time to turn on various levels of
45 * verbosity and tracing which will be output to the system logs.
46 */
47
48enum p9_debug_flags {
49 P9_DEBUG_ERROR = (1<<0),
50 P9_DEBUG_9P = (1<<2),
51 P9_DEBUG_VFS = (1<<3),
52 P9_DEBUG_CONV = (1<<4),
53 P9_DEBUG_MUX = (1<<5),
54 P9_DEBUG_TRANS = (1<<6),
55 P9_DEBUG_SLABS = (1<<7),
56 P9_DEBUG_FCALL = (1<<8),
Eric Van Hensbergen51a87c52008-10-16 08:30:07 -050057 P9_DEBUG_FID = (1<<9),
Eric Van Hensbergenee443992008-03-05 07:08:09 -060058};
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -050059
60extern unsigned int p9_debug_level;
61
62#define P9_DPRINTK(level, format, arg...) \
63do { \
Eric Van Hensbergen51a87c52008-10-16 08:30:07 -050064 if (level == P9_DEBUG_9P) \
65 printk(KERN_NOTICE "(%8.8d) " \
66 format , task_pid_nr(current) , ## arg); \
67 else if ((p9_debug_level & level) == level) \
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -050068 printk(KERN_NOTICE "-- %s (%d): " \
Harvey Harrisond5c003b2008-10-15 22:01:24 -070069 format , __func__, task_pid_nr(current) , ## arg); \
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -050070} while (0)
71
72#define PRINT_FCALL_ERROR(s, fcall) P9_DPRINTK(P9_DEBUG_ERROR, \
73 "%s: %.*s\n", s, fcall?fcall->params.rerror.error.len:0, \
74 fcall?fcall->params.rerror.error.str:"");
75
76#else
77#define P9_DPRINTK(level, format, arg...) do { } while (0)
78#define PRINT_FCALL_ERROR(s, fcall) do { } while (0)
79#endif
80
81#define P9_EPRINTK(level, format, arg...) \
82do { \
83 printk(level "9p: %s (%d): " \
Harvey Harrisond5c003b2008-10-15 22:01:24 -070084 format , __func__, task_pid_nr(current), ## arg); \
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -050085} while (0)
86
Eric Van Hensbergenee443992008-03-05 07:08:09 -060087/**
88 * enum p9_msg_t - 9P message types
89 * @P9_TVERSION: version handshake request
90 * @P9_RVERSION: version handshake response
91 * @P9_TAUTH: request to establish authentication channel
92 * @P9_RAUTH: response with authentication information
93 * @P9_TATTACH: establish user access to file service
94 * @P9_RATTACH: response with top level handle to file hierarchy
95 * @P9_TERROR: not used
96 * @P9_RERROR: response for any failed request
97 * @P9_TFLUSH: request to abort a previous request
98 * @P9_RFLUSH: response when previous request has been cancelled
99 * @P9_TWALK: descend a directory hierarchy
100 * @P9_RWALK: response with new handle for position within hierarchy
101 * @P9_TOPEN: prepare a handle for I/O on an existing file
102 * @P9_ROPEN: response with file access information
103 * @P9_TCREATE: prepare a handle for I/O on a new file
104 * @P9_RCREATE: response with file access information
105 * @P9_TREAD: request to transfer data from a file or directory
106 * @P9_RREAD: response with data requested
107 * @P9_TWRITE: reuqest to transfer data to a file
108 * @P9_RWRITE: response with out much data was transfered to file
109 * @P9_TCLUNK: forget about a handle to an entity within the file system
110 * @P9_RCLUNK: response when server has forgotten about the handle
111 * @P9_TREMOVE: request to remove an entity from the hierarchy
112 * @P9_RREMOVE: response when server has removed the entity
113 * @P9_TSTAT: request file entity attributes
114 * @P9_RSTAT: response with file entity attributes
115 * @P9_TWSTAT: request to update file entity attributes
116 * @P9_RWSTAT: response when file entity attributes are updated
117 *
118 * There are 14 basic operations in 9P2000, paired as
119 * requests and responses. The one special case is ERROR
120 * as there is no @P9_TERROR request for clients to transmit to
121 * the server, but the server may respond to any other request
122 * with an @P9_RERROR.
123 *
124 * See Also: http://plan9.bell-labs.com/sys/man/5/INDEX.html
125 */
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500126
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600127enum p9_msg_t {
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500128 P9_TVERSION = 100,
129 P9_RVERSION,
130 P9_TAUTH = 102,
131 P9_RAUTH,
132 P9_TATTACH = 104,
133 P9_RATTACH,
134 P9_TERROR = 106,
135 P9_RERROR,
136 P9_TFLUSH = 108,
137 P9_RFLUSH,
138 P9_TWALK = 110,
139 P9_RWALK,
140 P9_TOPEN = 112,
141 P9_ROPEN,
142 P9_TCREATE = 114,
143 P9_RCREATE,
144 P9_TREAD = 116,
145 P9_RREAD,
146 P9_TWRITE = 118,
147 P9_RWRITE,
148 P9_TCLUNK = 120,
149 P9_RCLUNK,
150 P9_TREMOVE = 122,
151 P9_RREMOVE,
152 P9_TSTAT = 124,
153 P9_RSTAT,
154 P9_TWSTAT = 126,
155 P9_RWSTAT,
156};
157
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600158/**
159 * enum p9_open_mode_t - 9P open modes
160 * @P9_OREAD: open file for reading only
161 * @P9_OWRITE: open file for writing only
162 * @P9_ORDWR: open file for reading or writing
163 * @P9_OEXEC: open file for execution
164 * @P9_OTRUNC: truncate file to zero-length before opening it
165 * @P9_OREXEC: close the file when an exec(2) system call is made
166 * @P9_ORCLOSE: remove the file when the file is closed
167 * @P9_OAPPEND: open the file and seek to the end
168 * @P9_OEXCL: only create a file, do not open it
169 *
170 * 9P open modes differ slightly from Posix standard modes.
171 * In particular, there are extra modes which specify different
172 * semantic behaviors than may be available on standard Posix
173 * systems. For example, @P9_OREXEC and @P9_ORCLOSE are modes that
174 * most likely will not be issued from the Linux VFS client, but may
175 * be supported by servers.
176 *
177 * See Also: http://plan9.bell-labs.com/magic/man2html/2/open
178 */
179
180enum p9_open_mode_t {
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500181 P9_OREAD = 0x00,
182 P9_OWRITE = 0x01,
183 P9_ORDWR = 0x02,
184 P9_OEXEC = 0x03,
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500185 P9_OTRUNC = 0x10,
186 P9_OREXEC = 0x20,
187 P9_ORCLOSE = 0x40,
188 P9_OAPPEND = 0x80,
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600189 P9_OEXCL = 0x1000,
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500190};
191
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600192/**
193 * enum p9_perm_t - 9P permissions
194 * @P9_DMDIR: mode bite for directories
195 * @P9_DMAPPEND: mode bit for is append-only
196 * @P9_DMEXCL: mode bit for excluse use (only one open handle allowed)
197 * @P9_DMMOUNT: mode bite for mount points
198 * @P9_DMAUTH: mode bit for authentication file
199 * @P9_DMTMP: mode bit for non-backed-up files
200 * @P9_DMSYMLINK: mode bit for symbolic links (9P2000.u)
201 * @P9_DMLINK: mode bit for hard-link (9P2000.u)
202 * @P9_DMDEVICE: mode bit for device files (9P2000.u)
203 * @P9_DMNAMEDPIPE: mode bit for named pipe (9P2000.u)
204 * @P9_DMSOCKET: mode bit for socket (9P2000.u)
205 * @P9_DMSETUID: mode bit for setuid (9P2000.u)
206 * @P9_DMSETGID: mode bit for setgid (9P2000.u)
207 * @P9_DMSETVTX: mode bit for sticky bit (9P2000.u)
208 *
209 * 9P permissions differ slightly from Posix standard modes.
210 *
211 * See Also: http://plan9.bell-labs.com/magic/man2html/2/stat
212 */
213enum p9_perm_t {
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500214 P9_DMDIR = 0x80000000,
215 P9_DMAPPEND = 0x40000000,
216 P9_DMEXCL = 0x20000000,
217 P9_DMMOUNT = 0x10000000,
218 P9_DMAUTH = 0x08000000,
219 P9_DMTMP = 0x04000000,
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600220/* 9P2000.u extensions */
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500221 P9_DMSYMLINK = 0x02000000,
222 P9_DMLINK = 0x01000000,
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500223 P9_DMDEVICE = 0x00800000,
224 P9_DMNAMEDPIPE = 0x00200000,
225 P9_DMSOCKET = 0x00100000,
226 P9_DMSETUID = 0x00080000,
227 P9_DMSETGID = 0x00040000,
Anthony Liguorid199d652008-02-06 19:25:06 -0600228 P9_DMSETVTX = 0x00010000,
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500229};
230
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600231/**
232 * enum p9_qid_t - QID types
233 * @P9_QTDIR: directory
234 * @P9_QTAPPEND: append-only
235 * @P9_QTEXCL: excluse use (only one open handle allowed)
236 * @P9_QTMOUNT: mount points
237 * @P9_QTAUTH: authentication file
238 * @P9_QTTMP: non-backed-up files
239 * @P9_QTSYMLINK: symbolic links (9P2000.u)
240 * @P9_QTLINK: hard-link (9P2000.u)
241 * @P9_QTFILE: normal files
242 *
243 * QID types are a subset of permissions - they are primarily
244 * used to differentiate semantics for a file system entity via
245 * a jump-table. Their value is also the most signifigant 16 bits
246 * of the permission_t
247 *
248 * See Also: http://plan9.bell-labs.com/magic/man2html/2/stat
249 */
250enum p9_qid_t {
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500251 P9_QTDIR = 0x80,
252 P9_QTAPPEND = 0x40,
253 P9_QTEXCL = 0x20,
254 P9_QTMOUNT = 0x10,
255 P9_QTAUTH = 0x08,
256 P9_QTTMP = 0x04,
257 P9_QTSYMLINK = 0x02,
258 P9_QTLINK = 0x01,
259 P9_QTFILE = 0x00,
260};
261
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600262/* 9P Magic Numbers */
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500263#define P9_NOTAG (u16)(~0)
264#define P9_NOFID (u32)(~0)
265#define P9_MAXWELEM 16
266
267/* ample room for Twrite/Rread header */
268#define P9_IOHDRSZ 24
269
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600270/**
271 * struct p9_str - length prefixed string type
272 * @len: length of the string
273 * @str: the string
274 *
275 * The protocol uses length prefixed strings for all
276 * string data, so we replicate that for our internal
277 * string members.
278 */
279
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500280struct p9_str {
281 u16 len;
282 char *str;
283};
284
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600285/**
286 * struct p9_qid - file system entity information
287 * @type: 8-bit type &p9_qid_t
288 * @version: 16-bit monotonically incrementing version number
289 * @path: 64-bit per-server-unique ID for a file system element
290 *
291 * qids are identifiers used by 9P servers to track file system
292 * entities. The type is used to differentiate semantics for operations
293 * on the entity (ie. read means something different on a directory than
294 * on a file). The path provides a server unique index for an entity
295 * (roughly analogous to an inode number), while the version is updated
296 * every time a file is modified and can be used to maintain cache
297 * coherency between clients and serves.
298 * Servers will often differentiate purely synthetic entities by setting
299 * their version to 0, signaling that they should never be cached and
300 * should be accessed synchronously.
301 *
302 * See Also://plan9.bell-labs.com/magic/man2html/2/stat
303 */
304
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500305struct p9_qid {
306 u8 type;
307 u32 version;
308 u64 path;
309};
310
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600311/**
312 * struct p9_stat - file system metadata information
313 * @size: length prefix for this stat structure instance
314 * @type: the type of the server (equivilent to a major number)
315 * @dev: the sub-type of the server (equivilent to a minor number)
316 * @qid: unique id from the server of type &p9_qid
317 * @mode: Plan 9 format permissions of type &p9_perm_t
318 * @atime: Last access/read time
319 * @mtime: Last modify/write time
320 * @length: file length
321 * @name: last element of path (aka filename) in type &p9_str
322 * @uid: owner name in type &p9_str
323 * @gid: group owner in type &p9_str
324 * @muid: last modifier in type &p9_str
325 * @extension: area used to encode extended UNIX support in type &p9_str
326 * @n_uid: numeric user id of owner (part of 9p2000.u extension)
327 * @n_gid: numeric group id (part of 9p2000.u extension)
328 * @n_muid: numeric user id of laster modifier (part of 9p2000.u extension)
329 *
330 * See Also: http://plan9.bell-labs.com/magic/man2html/2/stat
331 */
332
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500333struct p9_stat {
334 u16 size;
335 u16 type;
336 u32 dev;
337 struct p9_qid qid;
338 u32 mode;
339 u32 atime;
340 u32 mtime;
341 u64 length;
342 struct p9_str name;
343 struct p9_str uid;
344 struct p9_str gid;
345 struct p9_str muid;
346 struct p9_str extension; /* 9p2000.u extensions */
347 u32 n_uid; /* 9p2000.u extensions */
348 u32 n_gid; /* 9p2000.u extensions */
349 u32 n_muid; /* 9p2000.u extensions */
350};
351
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600352/*
353 * file metadata (stat) structure used to create Twstat message
354 * The is identical to &p9_stat, but the strings don't point to
355 * the same memory block and should be freed separately
356 *
357 * See Also: http://plan9.bell-labs.com/magic/man2html/2/stat
358 */
359
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500360struct p9_wstat {
361 u16 size;
362 u16 type;
363 u32 dev;
364 struct p9_qid qid;
365 u32 mode;
366 u32 atime;
367 u32 mtime;
368 u64 length;
369 char *name;
370 char *uid;
371 char *gid;
372 char *muid;
373 char *extension; /* 9p2000.u extensions */
374 u32 n_uid; /* 9p2000.u extensions */
375 u32 n_gid; /* 9p2000.u extensions */
376 u32 n_muid; /* 9p2000.u extensions */
377};
378
379/* Structures for Protocol Operations */
380struct p9_tversion {
381 u32 msize;
382 struct p9_str version;
383};
384
385struct p9_rversion {
386 u32 msize;
387 struct p9_str version;
388};
389
390struct p9_tauth {
391 u32 afid;
392 struct p9_str uname;
393 struct p9_str aname;
Latchesar Ionkovba176742007-10-17 14:31:07 -0500394 u32 n_uname; /* 9P2000.u extensions */
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500395};
396
397struct p9_rauth {
398 struct p9_qid qid;
399};
400
401struct p9_rerror {
402 struct p9_str error;
403 u32 errno; /* 9p2000.u extension */
404};
405
406struct p9_tflush {
407 u16 oldtag;
408};
409
410struct p9_rflush {
411};
412
413struct p9_tattach {
414 u32 fid;
415 u32 afid;
416 struct p9_str uname;
417 struct p9_str aname;
Latchesar Ionkovba176742007-10-17 14:31:07 -0500418 u32 n_uname; /* 9P2000.u extensions */
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500419};
420
421struct p9_rattach {
422 struct p9_qid qid;
423};
424
425struct p9_twalk {
426 u32 fid;
427 u32 newfid;
428 u16 nwname;
429 struct p9_str wnames[16];
430};
431
432struct p9_rwalk {
433 u16 nwqid;
434 struct p9_qid wqids[16];
435};
436
437struct p9_topen {
438 u32 fid;
439 u8 mode;
440};
441
442struct p9_ropen {
443 struct p9_qid qid;
444 u32 iounit;
445};
446
447struct p9_tcreate {
448 u32 fid;
449 struct p9_str name;
450 u32 perm;
451 u8 mode;
452 struct p9_str extension;
453};
454
455struct p9_rcreate {
456 struct p9_qid qid;
457 u32 iounit;
458};
459
460struct p9_tread {
461 u32 fid;
462 u64 offset;
463 u32 count;
464};
465
466struct p9_rread {
467 u32 count;
468 u8 *data;
469};
470
471struct p9_twrite {
472 u32 fid;
473 u64 offset;
474 u32 count;
475 u8 *data;
476};
477
478struct p9_rwrite {
479 u32 count;
480};
481
482struct p9_tclunk {
483 u32 fid;
484};
485
486struct p9_rclunk {
487};
488
489struct p9_tremove {
490 u32 fid;
491};
492
493struct p9_rremove {
494};
495
496struct p9_tstat {
497 u32 fid;
498};
499
500struct p9_rstat {
501 struct p9_stat stat;
502};
503
504struct p9_twstat {
505 u32 fid;
506 struct p9_stat stat;
507};
508
509struct p9_rwstat {
510};
511
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600512/**
513 * struct p9_fcall - primary packet structure
514 * @size: prefixed length of the structure
515 * @id: protocol operating identifier of type &p9_msg_t
516 * @tag: transaction id of the request
Eric Van Hensbergenace51c42008-10-13 20:40:27 -0500517 * @offset: used by marshalling routines to track currentposition in buffer
518 * @capacity: used by marshalling routines to track total capacity
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600519 * @sdata: payload
520 * @params: per-operation parameters
521 *
522 * &p9_fcall represents the structure for all 9P RPC
523 * transactions. Requests are packaged into fcalls, and reponses
524 * must be extracted from them.
525 *
526 * See Also: http://plan9.bell-labs.com/magic/man2html/2/fcall
527 */
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500528
529struct p9_fcall {
530 u32 size;
531 u8 id;
532 u16 tag;
Eric Van Hensbergenace51c42008-10-13 20:40:27 -0500533
534 size_t offset;
535 size_t capacity;
536
537 uint8_t *sdata;
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500538
539 union {
540 struct p9_tversion tversion;
541 struct p9_rversion rversion;
542 struct p9_tauth tauth;
543 struct p9_rauth rauth;
544 struct p9_rerror rerror;
545 struct p9_tflush tflush;
546 struct p9_rflush rflush;
547 struct p9_tattach tattach;
548 struct p9_rattach rattach;
549 struct p9_twalk twalk;
550 struct p9_rwalk rwalk;
551 struct p9_topen topen;
552 struct p9_ropen ropen;
553 struct p9_tcreate tcreate;
554 struct p9_rcreate rcreate;
555 struct p9_tread tread;
556 struct p9_rread rread;
557 struct p9_twrite twrite;
558 struct p9_rwrite rwrite;
559 struct p9_tclunk tclunk;
560 struct p9_rclunk rclunk;
561 struct p9_tremove tremove;
562 struct p9_rremove rremove;
563 struct p9_tstat tstat;
564 struct p9_rstat rstat;
565 struct p9_twstat twstat;
566 struct p9_rwstat rwstat;
567 } params;
568};
569
570struct p9_idpool;
571
572int p9_deserialize_stat(void *buf, u32 buflen, struct p9_stat *stat,
573 int dotu);
574int p9_deserialize_fcall(void *buf, u32 buflen, struct p9_fcall *fc, int dotu);
575void p9_set_tag(struct p9_fcall *fc, u16 tag);
576struct p9_fcall *p9_create_tversion(u32 msize, char *version);
577struct p9_fcall *p9_create_tattach(u32 fid, u32 afid, char *uname,
Latchesar Ionkovba176742007-10-17 14:31:07 -0500578 char *aname, u32 n_uname, int dotu);
579struct p9_fcall *p9_create_tauth(u32 afid, char *uname, char *aname,
580 u32 n_uname, int dotu);
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500581struct p9_fcall *p9_create_tflush(u16 oldtag);
582struct p9_fcall *p9_create_twalk(u32 fid, u32 newfid, u16 nwname,
583 char **wnames);
584struct p9_fcall *p9_create_topen(u32 fid, u8 mode);
585struct p9_fcall *p9_create_tcreate(u32 fid, char *name, u32 perm, u8 mode,
586 char *extension, int dotu);
587struct p9_fcall *p9_create_tread(u32 fid, u64 offset, u32 count);
588struct p9_fcall *p9_create_twrite(u32 fid, u64 offset, u32 count,
589 const char *data);
590struct p9_fcall *p9_create_twrite_u(u32 fid, u64 offset, u32 count,
591 const char __user *data);
592struct p9_fcall *p9_create_tclunk(u32 fid);
593struct p9_fcall *p9_create_tremove(u32 fid);
594struct p9_fcall *p9_create_tstat(u32 fid);
595struct p9_fcall *p9_create_twstat(u32 fid, struct p9_wstat *wstat,
596 int dotu);
597
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500598int p9_errstr2errno(char *errstr, int len);
599
600struct p9_idpool *p9_idpool_create(void);
601void p9_idpool_destroy(struct p9_idpool *);
602int p9_idpool_get(struct p9_idpool *p);
603void p9_idpool_put(int id, struct p9_idpool *p);
604int p9_idpool_check(int id, struct p9_idpool *p);
605
606int p9_error_init(void);
607int p9_errstr2errno(char *, int);
Eric Van Hensbergen887b3ec2008-05-08 20:26:37 -0500608int p9_trans_fd_init(void);
Tejun Heo72029fe2008-09-24 16:22:23 -0500609void p9_trans_fd_exit(void);
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500610#endif /* NET_9P_H */