blob: 55e96057f47fd636b817ef53df332a16ba754b8f [file] [log] [blame]
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
Eric Van Hensbergenee443992008-03-05 07:08:09 -060030/**
31 * enum p9_debug_flags - bits for mount time debug parameter
32 * @P9_DEBUG_ERROR: more verbose error messages including original error string
33 * @P9_DEBUG_9P: 9P protocol tracing
34 * @P9_DEBUG_VFS: VFS API tracing
35 * @P9_DEBUG_CONV: protocol conversion tracing
36 * @P9_DEBUG_MUX: trace management of concurrent transactions
37 * @P9_DEBUG_TRANS: transport tracing
38 * @P9_DEBUG_SLABS: memory management tracing
39 * @P9_DEBUG_FCALL: verbose dump of protocol messages
Eric Van Hensbergen51a87c52008-10-16 08:30:07 -050040 * @P9_DEBUG_FID: fid allocation/deallocation tracking
Abhishek Kulkarni60e78d22009-09-23 13:00:27 -050041 * @P9_DEBUG_PKT: packet marshalling/unmarshalling
42 * @P9_DEBUG_FSC: FS-cache tracing
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 Hensbergene7f4b8f2008-10-17 16:20:07 -050058 P9_DEBUG_PKT = (1<<10),
Abhishek Kulkarni60e78d22009-09-23 13:00:27 -050059 P9_DEBUG_FSC = (1<<11),
Eric Van Hensbergenee443992008-03-05 07:08:09 -060060};
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -050061
Eric Van Hensbergen0b15a3a2008-10-22 18:47:40 -050062#ifdef CONFIG_NET_9P_DEBUG
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -050063extern unsigned int p9_debug_level;
64
65#define P9_DPRINTK(level, format, arg...) \
66do { \
Eric Van Hensbergen02da3982008-10-16 08:29:30 -050067 if ((p9_debug_level & level) == level) {\
68 if (level == P9_DEBUG_9P) \
69 printk(KERN_NOTICE "(%8.8d) " \
70 format , task_pid_nr(current) , ## arg); \
71 else \
72 printk(KERN_NOTICE "-- %s (%d): " \
73 format , __func__, task_pid_nr(current) , ## arg); \
74 } \
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -050075} while (0)
76
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -050077#else
78#define P9_DPRINTK(level, format, arg...) do { } while (0)
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -050079#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
Arun R Bharadwaj4f7ebe82010-07-28 14:17:26 +053089 * @P9_TLERROR: not used
90 * @P9_RLERROR: response for any failed request for 9P2000.L
Sripathi Kodibda8e772010-03-25 12:45:30 +000091 * @P9_TSTATFS: file system status request
92 * @P9_RSTATFS: file system status response
Venkateswararao Jujjuri (JV)50cc42f2010-06-09 15:59:31 -070093 * @P9_TSYMLINK: make symlink request
94 * @P9_RSYMLINK: make symlink response
M. Mohan Kumar4b435162010-06-16 14:27:01 +053095 * @P9_TMKNOD: create a special file object request
96 * @P9_RMKNOD: create a special file object response
Venkateswararao Jujjuri (JV)56431352010-06-17 18:27:46 -070097 * @P9_TLCREATE: prepare a handle for I/O on an new file for 9P2000.L
98 * @P9_RLCREATE: response with file access information for 9P2000.L
Sripathi Kodi4681dbd2010-03-25 12:47:26 +000099 * @P9_TRENAME: rename request
100 * @P9_RRENAME: rename response
M. Mohan Kumar01a622b2010-06-16 14:27:22 +0530101 * @P9_TMKDIR: create a directory request
102 * @P9_RMKDIR: create a directory response
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600103 * @P9_TVERSION: version handshake request
104 * @P9_RVERSION: version handshake response
105 * @P9_TAUTH: request to establish authentication channel
106 * @P9_RAUTH: response with authentication information
107 * @P9_TATTACH: establish user access to file service
108 * @P9_RATTACH: response with top level handle to file hierarchy
109 * @P9_TERROR: not used
110 * @P9_RERROR: response for any failed request
111 * @P9_TFLUSH: request to abort a previous request
112 * @P9_RFLUSH: response when previous request has been cancelled
113 * @P9_TWALK: descend a directory hierarchy
114 * @P9_RWALK: response with new handle for position within hierarchy
115 * @P9_TOPEN: prepare a handle for I/O on an existing file
116 * @P9_ROPEN: response with file access information
117 * @P9_TCREATE: prepare a handle for I/O on a new file
118 * @P9_RCREATE: response with file access information
119 * @P9_TREAD: request to transfer data from a file or directory
120 * @P9_RREAD: response with data requested
121 * @P9_TWRITE: reuqest to transfer data to a file
122 * @P9_RWRITE: response with out much data was transfered to file
123 * @P9_TCLUNK: forget about a handle to an entity within the file system
124 * @P9_RCLUNK: response when server has forgotten about the handle
125 * @P9_TREMOVE: request to remove an entity from the hierarchy
126 * @P9_RREMOVE: response when server has removed the entity
127 * @P9_TSTAT: request file entity attributes
128 * @P9_RSTAT: response with file entity attributes
129 * @P9_TWSTAT: request to update file entity attributes
130 * @P9_RWSTAT: response when file entity attributes are updated
131 *
132 * There are 14 basic operations in 9P2000, paired as
133 * requests and responses. The one special case is ERROR
134 * as there is no @P9_TERROR request for clients to transmit to
135 * the server, but the server may respond to any other request
136 * with an @P9_RERROR.
137 *
138 * See Also: http://plan9.bell-labs.com/sys/man/5/INDEX.html
139 */
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500140
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600141enum p9_msg_t {
Arun R Bharadwaj4f7ebe82010-07-28 14:17:26 +0530142 P9_TLERROR = 6,
143 P9_RLERROR,
Sripathi Kodibda8e772010-03-25 12:45:30 +0000144 P9_TSTATFS = 8,
145 P9_RSTATFS,
M. Mohan Kumaref565472010-06-22 19:47:50 +0530146 P9_TLOPEN = 12,
147 P9_RLOPEN,
Venkateswararao Jujjuri (JV)56431352010-06-17 18:27:46 -0700148 P9_TLCREATE = 14,
149 P9_RLCREATE,
Venkateswararao Jujjuri (JV)50cc42f2010-06-09 15:59:31 -0700150 P9_TSYMLINK = 16,
151 P9_RSYMLINK,
M. Mohan Kumar4b435162010-06-16 14:27:01 +0530152 P9_TMKNOD = 18,
153 P9_RMKNOD,
Sripathi Kodi4681dbd2010-03-25 12:47:26 +0000154 P9_TRENAME = 20,
155 P9_RRENAME,
Sripathi Kodif0853122010-07-12 20:07:23 +0530156 P9_TGETATTR = 24,
157 P9_RGETATTR,
Sripathi Kodi87d78452010-06-18 11:50:10 +0530158 P9_TSETATTR = 26,
159 P9_RSETATTR,
Aneesh Kumar K.V0ef63f32010-05-31 13:22:45 +0530160 P9_TXATTRWALK = 30,
161 P9_RXATTRWALK,
Aneesh Kumar K.Veda25e462010-05-31 13:22:50 +0530162 P9_TXATTRCREATE = 32,
163 P9_RXATTRCREATE,
Sripathi Kodi7751bdb2010-06-04 13:41:26 +0000164 P9_TREADDIR = 40,
165 P9_RREADDIR,
Venkateswararao Jujjuri (JV)920e65d2010-09-22 17:19:19 -0700166 P9_TFSYNC = 50,
167 P9_RFSYNC,
Venkateswararao Jujjuri (JV)652df9a2010-06-03 15:16:59 -0700168 P9_TLINK = 70,
169 P9_RLINK,
M. Mohan Kumar01a622b2010-06-16 14:27:22 +0530170 P9_TMKDIR = 72,
171 P9_RMKDIR,
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500172 P9_TVERSION = 100,
173 P9_RVERSION,
174 P9_TAUTH = 102,
175 P9_RAUTH,
176 P9_TATTACH = 104,
177 P9_RATTACH,
178 P9_TERROR = 106,
179 P9_RERROR,
180 P9_TFLUSH = 108,
181 P9_RFLUSH,
182 P9_TWALK = 110,
183 P9_RWALK,
184 P9_TOPEN = 112,
185 P9_ROPEN,
186 P9_TCREATE = 114,
187 P9_RCREATE,
188 P9_TREAD = 116,
189 P9_RREAD,
190 P9_TWRITE = 118,
191 P9_RWRITE,
192 P9_TCLUNK = 120,
193 P9_RCLUNK,
194 P9_TREMOVE = 122,
195 P9_RREMOVE,
196 P9_TSTAT = 124,
197 P9_RSTAT,
198 P9_TWSTAT = 126,
199 P9_RWSTAT,
200};
201
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600202/**
203 * enum p9_open_mode_t - 9P open modes
204 * @P9_OREAD: open file for reading only
205 * @P9_OWRITE: open file for writing only
206 * @P9_ORDWR: open file for reading or writing
207 * @P9_OEXEC: open file for execution
208 * @P9_OTRUNC: truncate file to zero-length before opening it
209 * @P9_OREXEC: close the file when an exec(2) system call is made
210 * @P9_ORCLOSE: remove the file when the file is closed
211 * @P9_OAPPEND: open the file and seek to the end
212 * @P9_OEXCL: only create a file, do not open it
213 *
214 * 9P open modes differ slightly from Posix standard modes.
215 * In particular, there are extra modes which specify different
216 * semantic behaviors than may be available on standard Posix
217 * systems. For example, @P9_OREXEC and @P9_ORCLOSE are modes that
218 * most likely will not be issued from the Linux VFS client, but may
219 * be supported by servers.
220 *
221 * See Also: http://plan9.bell-labs.com/magic/man2html/2/open
222 */
223
224enum p9_open_mode_t {
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500225 P9_OREAD = 0x00,
226 P9_OWRITE = 0x01,
227 P9_ORDWR = 0x02,
228 P9_OEXEC = 0x03,
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500229 P9_OTRUNC = 0x10,
230 P9_OREXEC = 0x20,
231 P9_ORCLOSE = 0x40,
232 P9_OAPPEND = 0x80,
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600233 P9_OEXCL = 0x1000,
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500234};
235
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600236/**
237 * enum p9_perm_t - 9P permissions
238 * @P9_DMDIR: mode bite for directories
239 * @P9_DMAPPEND: mode bit for is append-only
240 * @P9_DMEXCL: mode bit for excluse use (only one open handle allowed)
241 * @P9_DMMOUNT: mode bite for mount points
242 * @P9_DMAUTH: mode bit for authentication file
243 * @P9_DMTMP: mode bit for non-backed-up files
244 * @P9_DMSYMLINK: mode bit for symbolic links (9P2000.u)
245 * @P9_DMLINK: mode bit for hard-link (9P2000.u)
246 * @P9_DMDEVICE: mode bit for device files (9P2000.u)
247 * @P9_DMNAMEDPIPE: mode bit for named pipe (9P2000.u)
248 * @P9_DMSOCKET: mode bit for socket (9P2000.u)
249 * @P9_DMSETUID: mode bit for setuid (9P2000.u)
250 * @P9_DMSETGID: mode bit for setgid (9P2000.u)
251 * @P9_DMSETVTX: mode bit for sticky bit (9P2000.u)
252 *
253 * 9P permissions differ slightly from Posix standard modes.
254 *
255 * See Also: http://plan9.bell-labs.com/magic/man2html/2/stat
256 */
257enum p9_perm_t {
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500258 P9_DMDIR = 0x80000000,
259 P9_DMAPPEND = 0x40000000,
260 P9_DMEXCL = 0x20000000,
261 P9_DMMOUNT = 0x10000000,
262 P9_DMAUTH = 0x08000000,
263 P9_DMTMP = 0x04000000,
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600264/* 9P2000.u extensions */
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500265 P9_DMSYMLINK = 0x02000000,
266 P9_DMLINK = 0x01000000,
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500267 P9_DMDEVICE = 0x00800000,
268 P9_DMNAMEDPIPE = 0x00200000,
269 P9_DMSOCKET = 0x00100000,
270 P9_DMSETUID = 0x00080000,
271 P9_DMSETGID = 0x00040000,
Anthony Liguorid199d652008-02-06 19:25:06 -0600272 P9_DMSETVTX = 0x00010000,
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500273};
274
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600275/**
276 * enum p9_qid_t - QID types
277 * @P9_QTDIR: directory
278 * @P9_QTAPPEND: append-only
279 * @P9_QTEXCL: excluse use (only one open handle allowed)
280 * @P9_QTMOUNT: mount points
281 * @P9_QTAUTH: authentication file
282 * @P9_QTTMP: non-backed-up files
283 * @P9_QTSYMLINK: symbolic links (9P2000.u)
284 * @P9_QTLINK: hard-link (9P2000.u)
285 * @P9_QTFILE: normal files
286 *
287 * QID types are a subset of permissions - they are primarily
288 * used to differentiate semantics for a file system entity via
289 * a jump-table. Their value is also the most signifigant 16 bits
290 * of the permission_t
291 *
292 * See Also: http://plan9.bell-labs.com/magic/man2html/2/stat
293 */
294enum p9_qid_t {
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500295 P9_QTDIR = 0x80,
296 P9_QTAPPEND = 0x40,
297 P9_QTEXCL = 0x20,
298 P9_QTMOUNT = 0x10,
299 P9_QTAUTH = 0x08,
300 P9_QTTMP = 0x04,
301 P9_QTSYMLINK = 0x02,
302 P9_QTLINK = 0x01,
303 P9_QTFILE = 0x00,
304};
305
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600306/* 9P Magic Numbers */
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500307#define P9_NOTAG (u16)(~0)
308#define P9_NOFID (u32)(~0)
309#define P9_MAXWELEM 16
310
311/* ample room for Twrite/Rread header */
312#define P9_IOHDRSZ 24
313
Sripathi Kodi7751bdb2010-06-04 13:41:26 +0000314/* Room for readdir header */
315#define P9_READDIRHDRSZ 24
316
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600317/**
318 * struct p9_str - length prefixed string type
319 * @len: length of the string
320 * @str: the string
321 *
322 * The protocol uses length prefixed strings for all
323 * string data, so we replicate that for our internal
324 * string members.
325 */
326
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500327struct p9_str {
328 u16 len;
329 char *str;
330};
331
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600332/**
333 * struct p9_qid - file system entity information
334 * @type: 8-bit type &p9_qid_t
335 * @version: 16-bit monotonically incrementing version number
336 * @path: 64-bit per-server-unique ID for a file system element
337 *
338 * qids are identifiers used by 9P servers to track file system
339 * entities. The type is used to differentiate semantics for operations
340 * on the entity (ie. read means something different on a directory than
341 * on a file). The path provides a server unique index for an entity
342 * (roughly analogous to an inode number), while the version is updated
343 * every time a file is modified and can be used to maintain cache
344 * coherency between clients and serves.
345 * Servers will often differentiate purely synthetic entities by setting
346 * their version to 0, signaling that they should never be cached and
347 * should be accessed synchronously.
348 *
349 * See Also://plan9.bell-labs.com/magic/man2html/2/stat
350 */
351
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500352struct p9_qid {
353 u8 type;
354 u32 version;
355 u64 path;
356};
357
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600358/**
359 * struct p9_stat - file system metadata information
360 * @size: length prefix for this stat structure instance
361 * @type: the type of the server (equivilent to a major number)
362 * @dev: the sub-type of the server (equivilent to a minor number)
363 * @qid: unique id from the server of type &p9_qid
364 * @mode: Plan 9 format permissions of type &p9_perm_t
365 * @atime: Last access/read time
366 * @mtime: Last modify/write time
367 * @length: file length
368 * @name: last element of path (aka filename) in type &p9_str
369 * @uid: owner name in type &p9_str
370 * @gid: group owner in type &p9_str
371 * @muid: last modifier in type &p9_str
372 * @extension: area used to encode extended UNIX support in type &p9_str
373 * @n_uid: numeric user id of owner (part of 9p2000.u extension)
374 * @n_gid: numeric group id (part of 9p2000.u extension)
375 * @n_muid: numeric user id of laster modifier (part of 9p2000.u extension)
376 *
377 * See Also: http://plan9.bell-labs.com/magic/man2html/2/stat
378 */
379
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500380struct p9_wstat {
381 u16 size;
382 u16 type;
383 u32 dev;
384 struct p9_qid qid;
385 u32 mode;
386 u32 atime;
387 u32 mtime;
388 u64 length;
389 char *name;
390 char *uid;
391 char *gid;
392 char *muid;
393 char *extension; /* 9p2000.u extensions */
394 u32 n_uid; /* 9p2000.u extensions */
395 u32 n_gid; /* 9p2000.u extensions */
396 u32 n_muid; /* 9p2000.u extensions */
397};
398
Sripathi Kodif0853122010-07-12 20:07:23 +0530399struct p9_stat_dotl {
400 u64 st_result_mask;
401 struct p9_qid qid;
402 u32 st_mode;
403 u32 st_uid;
404 u32 st_gid;
405 u64 st_nlink;
406 u64 st_rdev;
407 u64 st_size;
408 u64 st_blksize;
409 u64 st_blocks;
410 u64 st_atime_sec;
411 u64 st_atime_nsec;
412 u64 st_mtime_sec;
413 u64 st_mtime_nsec;
414 u64 st_ctime_sec;
415 u64 st_ctime_nsec;
416 u64 st_btime_sec;
417 u64 st_btime_nsec;
418 u64 st_gen;
419 u64 st_data_version;
420};
421
422#define P9_STATS_MODE 0x00000001ULL
423#define P9_STATS_NLINK 0x00000002ULL
424#define P9_STATS_UID 0x00000004ULL
425#define P9_STATS_GID 0x00000008ULL
426#define P9_STATS_RDEV 0x00000010ULL
427#define P9_STATS_ATIME 0x00000020ULL
428#define P9_STATS_MTIME 0x00000040ULL
429#define P9_STATS_CTIME 0x00000080ULL
430#define P9_STATS_INO 0x00000100ULL
431#define P9_STATS_SIZE 0x00000200ULL
432#define P9_STATS_BLOCKS 0x00000400ULL
433
434#define P9_STATS_BTIME 0x00000800ULL
435#define P9_STATS_GEN 0x00001000ULL
436#define P9_STATS_DATA_VERSION 0x00002000ULL
437
438#define P9_STATS_BASIC 0x000007ffULL /* Mask for fields up to BLOCKS */
439#define P9_STATS_ALL 0x00003fffULL /* Mask for All fields above */
440
Sripathi Kodi87d78452010-06-18 11:50:10 +0530441/**
442 * struct p9_iattr_dotl - P9 inode attribute for setattr
443 * @valid: bitfield specifying which fields are valid
444 * same as in struct iattr
445 * @mode: File permission bits
446 * @uid: user id of owner
447 * @gid: group id
448 * @size: File size
449 * @atime_sec: Last access time, seconds
450 * @atime_nsec: Last access time, nanoseconds
451 * @mtime_sec: Last modification time, seconds
452 * @mtime_nsec: Last modification time, nanoseconds
453 */
454
455struct p9_iattr_dotl {
456 u32 valid;
457 u32 mode;
458 u32 uid;
459 u32 gid;
460 u64 size;
461 u64 atime_sec;
462 u64 atime_nsec;
463 u64 mtime_sec;
464 u64 mtime_nsec;
465};
466
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500467/* Structures for Protocol Operations */
Sripathi Kodibda8e772010-03-25 12:45:30 +0000468struct p9_tstatfs {
469 u32 fid;
470};
471
472struct p9_rstatfs {
473 u32 type;
474 u32 bsize;
475 u64 blocks;
476 u64 bfree;
477 u64 bavail;
478 u64 files;
479 u64 ffree;
480 u64 fsid;
481 u32 namelen;
482};
483
Sripathi Kodi4681dbd2010-03-25 12:47:26 +0000484struct p9_trename {
485 u32 fid;
486 u32 newdirfid;
487 struct p9_str name;
488};
489
490struct p9_rrename {
491};
492
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500493struct p9_tversion {
494 u32 msize;
495 struct p9_str version;
496};
497
498struct p9_rversion {
499 u32 msize;
500 struct p9_str version;
501};
502
503struct p9_tauth {
504 u32 afid;
505 struct p9_str uname;
506 struct p9_str aname;
Latchesar Ionkovba176742007-10-17 14:31:07 -0500507 u32 n_uname; /* 9P2000.u extensions */
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500508};
509
510struct p9_rauth {
511 struct p9_qid qid;
512};
513
514struct p9_rerror {
515 struct p9_str error;
516 u32 errno; /* 9p2000.u extension */
517};
518
519struct p9_tflush {
520 u16 oldtag;
521};
522
523struct p9_rflush {
524};
525
526struct p9_tattach {
527 u32 fid;
528 u32 afid;
529 struct p9_str uname;
530 struct p9_str aname;
Latchesar Ionkovba176742007-10-17 14:31:07 -0500531 u32 n_uname; /* 9P2000.u extensions */
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500532};
533
534struct p9_rattach {
535 struct p9_qid qid;
536};
537
538struct p9_twalk {
539 u32 fid;
540 u32 newfid;
541 u16 nwname;
542 struct p9_str wnames[16];
543};
544
545struct p9_rwalk {
546 u16 nwqid;
547 struct p9_qid wqids[16];
548};
549
550struct p9_topen {
551 u32 fid;
552 u8 mode;
553};
554
555struct p9_ropen {
556 struct p9_qid qid;
557 u32 iounit;
558};
559
560struct p9_tcreate {
561 u32 fid;
562 struct p9_str name;
563 u32 perm;
564 u8 mode;
565 struct p9_str extension;
566};
567
568struct p9_rcreate {
569 struct p9_qid qid;
570 u32 iounit;
571};
572
573struct p9_tread {
574 u32 fid;
575 u64 offset;
576 u32 count;
577};
578
579struct p9_rread {
580 u32 count;
581 u8 *data;
582};
583
584struct p9_twrite {
585 u32 fid;
586 u64 offset;
587 u32 count;
588 u8 *data;
589};
590
591struct p9_rwrite {
592 u32 count;
593};
594
Sripathi Kodi7751bdb2010-06-04 13:41:26 +0000595struct p9_treaddir {
596 u32 fid;
597 u64 offset;
598 u32 count;
599};
600
601struct p9_rreaddir {
602 u32 count;
603 u8 *data;
604};
605
606
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500607struct p9_tclunk {
608 u32 fid;
609};
610
611struct p9_rclunk {
612};
613
614struct p9_tremove {
615 u32 fid;
616};
617
618struct p9_rremove {
619};
620
621struct p9_tstat {
622 u32 fid;
623};
624
625struct p9_rstat {
Eric Van Hensbergen02da3982008-10-16 08:29:30 -0500626 struct p9_wstat stat;
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500627};
628
629struct p9_twstat {
630 u32 fid;
Eric Van Hensbergen02da3982008-10-16 08:29:30 -0500631 struct p9_wstat stat;
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500632};
633
634struct p9_rwstat {
635};
636
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600637/**
638 * struct p9_fcall - primary packet structure
639 * @size: prefixed length of the structure
640 * @id: protocol operating identifier of type &p9_msg_t
641 * @tag: transaction id of the request
Eric Van Hensbergenace51c42008-10-13 20:40:27 -0500642 * @offset: used by marshalling routines to track currentposition in buffer
643 * @capacity: used by marshalling routines to track total capacity
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600644 * @sdata: payload
Eric Van Hensbergenee443992008-03-05 07:08:09 -0600645 *
646 * &p9_fcall represents the structure for all 9P RPC
647 * transactions. Requests are packaged into fcalls, and reponses
648 * must be extracted from them.
649 *
650 * See Also: http://plan9.bell-labs.com/magic/man2html/2/fcall
651 */
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500652
653struct p9_fcall {
654 u32 size;
655 u8 id;
656 u16 tag;
Eric Van Hensbergenace51c42008-10-13 20:40:27 -0500657
658 size_t offset;
659 size_t capacity;
660
661 uint8_t *sdata;
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500662};
663
664struct p9_idpool;
665
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500666int p9_errstr2errno(char *errstr, int len);
667
668struct p9_idpool *p9_idpool_create(void);
669void p9_idpool_destroy(struct p9_idpool *);
670int p9_idpool_get(struct p9_idpool *p);
671void p9_idpool_put(int id, struct p9_idpool *p);
672int p9_idpool_check(int id, struct p9_idpool *p);
673
674int p9_error_init(void);
675int p9_errstr2errno(char *, int);
Eric Van Hensbergen887b3ec2008-05-08 20:26:37 -0500676int p9_trans_fd_init(void);
Tejun Heo72029fe2008-09-24 16:22:23 -0500677void p9_trans_fd_exit(void);
Latchesar Ionkovbd238fb2007-07-10 17:57:28 -0500678#endif /* NET_9P_H */