Commit | Line | Data |
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bd238fb4 LI |
1 | /* |
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 | ||
ee443996 EVH |
30 | /** |
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 | |
51a87c55 | 40 | * @P9_DEBUG_FID: fid allocation/deallocation tracking |
60e78d2c AK |
41 | * @P9_DEBUG_PKT: packet marshalling/unmarshalling |
42 | * @P9_DEBUG_FSC: FS-cache tracing | |
e660a828 | 43 | * @P9_DEBUG_VPKT: Verbose packet debugging (full packet dump) |
ee443996 EVH |
44 | * |
45 | * These flags are passed at mount time to turn on various levels of | |
46 | * verbosity and tracing which will be output to the system logs. | |
47 | */ | |
48 | ||
49 | enum p9_debug_flags { | |
50 | P9_DEBUG_ERROR = (1<<0), | |
51 | P9_DEBUG_9P = (1<<2), | |
52 | P9_DEBUG_VFS = (1<<3), | |
53 | P9_DEBUG_CONV = (1<<4), | |
54 | P9_DEBUG_MUX = (1<<5), | |
55 | P9_DEBUG_TRANS = (1<<6), | |
56 | P9_DEBUG_SLABS = (1<<7), | |
57 | P9_DEBUG_FCALL = (1<<8), | |
51a87c55 | 58 | P9_DEBUG_FID = (1<<9), |
e7f4b8f1 | 59 | P9_DEBUG_PKT = (1<<10), |
60e78d2c | 60 | P9_DEBUG_FSC = (1<<11), |
e660a828 | 61 | P9_DEBUG_VPKT = (1<<12), |
ee443996 | 62 | }; |
bd238fb4 | 63 | |
0b15a3a5 | 64 | #ifdef CONFIG_NET_9P_DEBUG |
bd238fb4 | 65 | extern unsigned int p9_debug_level; |
5d385153 JP |
66 | __printf(3, 4) |
67 | void _p9_debug(enum p9_debug_flags level, const char *func, | |
68 | const char *fmt, ...); | |
69 | #define p9_debug(level, fmt, ...) \ | |
70 | _p9_debug(level, __func__, fmt, ##__VA_ARGS__) | |
bd238fb4 | 71 | #else |
5d385153 JP |
72 | #define p9_debug(level, fmt, ...) \ |
73 | no_printk(fmt, ##__VA_ARGS__) | |
bd238fb4 LI |
74 | #endif |
75 | ||
ee443996 EVH |
76 | /** |
77 | * enum p9_msg_t - 9P message types | |
4f7ebe80 AB |
78 | * @P9_TLERROR: not used |
79 | * @P9_RLERROR: response for any failed request for 9P2000.L | |
bda8e775 SK |
80 | * @P9_TSTATFS: file system status request |
81 | * @P9_RSTATFS: file system status response | |
50cc42ff VJJ |
82 | * @P9_TSYMLINK: make symlink request |
83 | * @P9_RSYMLINK: make symlink response | |
4b43516a MK |
84 | * @P9_TMKNOD: create a special file object request |
85 | * @P9_RMKNOD: create a special file object response | |
5643135a VJJ |
86 | * @P9_TLCREATE: prepare a handle for I/O on an new file for 9P2000.L |
87 | * @P9_RLCREATE: response with file access information for 9P2000.L | |
4681dbda SK |
88 | * @P9_TRENAME: rename request |
89 | * @P9_RRENAME: rename response | |
01a622bd MK |
90 | * @P9_TMKDIR: create a directory request |
91 | * @P9_RMKDIR: create a directory response | |
ee443996 EVH |
92 | * @P9_TVERSION: version handshake request |
93 | * @P9_RVERSION: version handshake response | |
94 | * @P9_TAUTH: request to establish authentication channel | |
95 | * @P9_RAUTH: response with authentication information | |
96 | * @P9_TATTACH: establish user access to file service | |
97 | * @P9_RATTACH: response with top level handle to file hierarchy | |
98 | * @P9_TERROR: not used | |
99 | * @P9_RERROR: response for any failed request | |
100 | * @P9_TFLUSH: request to abort a previous request | |
101 | * @P9_RFLUSH: response when previous request has been cancelled | |
102 | * @P9_TWALK: descend a directory hierarchy | |
103 | * @P9_RWALK: response with new handle for position within hierarchy | |
104 | * @P9_TOPEN: prepare a handle for I/O on an existing file | |
105 | * @P9_ROPEN: response with file access information | |
106 | * @P9_TCREATE: prepare a handle for I/O on a new file | |
107 | * @P9_RCREATE: response with file access information | |
108 | * @P9_TREAD: request to transfer data from a file or directory | |
109 | * @P9_RREAD: response with data requested | |
110 | * @P9_TWRITE: reuqest to transfer data to a file | |
25985edc | 111 | * @P9_RWRITE: response with out much data was transferred to file |
ee443996 EVH |
112 | * @P9_TCLUNK: forget about a handle to an entity within the file system |
113 | * @P9_RCLUNK: response when server has forgotten about the handle | |
114 | * @P9_TREMOVE: request to remove an entity from the hierarchy | |
115 | * @P9_RREMOVE: response when server has removed the entity | |
116 | * @P9_TSTAT: request file entity attributes | |
117 | * @P9_RSTAT: response with file entity attributes | |
118 | * @P9_TWSTAT: request to update file entity attributes | |
119 | * @P9_RWSTAT: response when file entity attributes are updated | |
120 | * | |
121 | * There are 14 basic operations in 9P2000, paired as | |
122 | * requests and responses. The one special case is ERROR | |
123 | * as there is no @P9_TERROR request for clients to transmit to | |
124 | * the server, but the server may respond to any other request | |
125 | * with an @P9_RERROR. | |
126 | * | |
127 | * See Also: http://plan9.bell-labs.com/sys/man/5/INDEX.html | |
128 | */ | |
bd238fb4 | 129 | |
ee443996 | 130 | enum p9_msg_t { |
4f7ebe80 AB |
131 | P9_TLERROR = 6, |
132 | P9_RLERROR, | |
bda8e775 SK |
133 | P9_TSTATFS = 8, |
134 | P9_RSTATFS, | |
ef56547e MK |
135 | P9_TLOPEN = 12, |
136 | P9_RLOPEN, | |
5643135a VJJ |
137 | P9_TLCREATE = 14, |
138 | P9_RLCREATE, | |
50cc42ff VJJ |
139 | P9_TSYMLINK = 16, |
140 | P9_RSYMLINK, | |
4b43516a MK |
141 | P9_TMKNOD = 18, |
142 | P9_RMKNOD, | |
4681dbda SK |
143 | P9_TRENAME = 20, |
144 | P9_RRENAME, | |
329176cc MK |
145 | P9_TREADLINK = 22, |
146 | P9_RREADLINK, | |
f0853122 SK |
147 | P9_TGETATTR = 24, |
148 | P9_RGETATTR, | |
87d7845a SK |
149 | P9_TSETATTR = 26, |
150 | P9_RSETATTR, | |
0ef63f34 AK |
151 | P9_TXATTRWALK = 30, |
152 | P9_RXATTRWALK, | |
eda25e46 AK |
153 | P9_TXATTRCREATE = 32, |
154 | P9_RXATTRCREATE, | |
7751bdb3 SK |
155 | P9_TREADDIR = 40, |
156 | P9_RREADDIR, | |
920e65dc VJJ |
157 | P9_TFSYNC = 50, |
158 | P9_RFSYNC, | |
a099027c MK |
159 | P9_TLOCK = 52, |
160 | P9_RLOCK, | |
1d769cd1 MK |
161 | P9_TGETLOCK = 54, |
162 | P9_RGETLOCK, | |
652df9a7 VJJ |
163 | P9_TLINK = 70, |
164 | P9_RLINK, | |
01a622bd MK |
165 | P9_TMKDIR = 72, |
166 | P9_RMKDIR, | |
9e8fb38e AK |
167 | P9_TRENAMEAT = 74, |
168 | P9_RRENAMEAT, | |
48e370ff AK |
169 | P9_TUNLINKAT = 76, |
170 | P9_RUNLINKAT, | |
bd238fb4 LI |
171 | P9_TVERSION = 100, |
172 | P9_RVERSION, | |
173 | P9_TAUTH = 102, | |
174 | P9_RAUTH, | |
175 | P9_TATTACH = 104, | |
176 | P9_RATTACH, | |
177 | P9_TERROR = 106, | |
178 | P9_RERROR, | |
179 | P9_TFLUSH = 108, | |
180 | P9_RFLUSH, | |
181 | P9_TWALK = 110, | |
182 | P9_RWALK, | |
183 | P9_TOPEN = 112, | |
184 | P9_ROPEN, | |
185 | P9_TCREATE = 114, | |
186 | P9_RCREATE, | |
187 | P9_TREAD = 116, | |
188 | P9_RREAD, | |
189 | P9_TWRITE = 118, | |
190 | P9_RWRITE, | |
191 | P9_TCLUNK = 120, | |
192 | P9_RCLUNK, | |
193 | P9_TREMOVE = 122, | |
194 | P9_RREMOVE, | |
195 | P9_TSTAT = 124, | |
196 | P9_RSTAT, | |
197 | P9_TWSTAT = 126, | |
198 | P9_RWSTAT, | |
199 | }; | |
200 | ||
ee443996 EVH |
201 | /** |
202 | * enum p9_open_mode_t - 9P open modes | |
203 | * @P9_OREAD: open file for reading only | |
204 | * @P9_OWRITE: open file for writing only | |
205 | * @P9_ORDWR: open file for reading or writing | |
206 | * @P9_OEXEC: open file for execution | |
207 | * @P9_OTRUNC: truncate file to zero-length before opening it | |
208 | * @P9_OREXEC: close the file when an exec(2) system call is made | |
209 | * @P9_ORCLOSE: remove the file when the file is closed | |
210 | * @P9_OAPPEND: open the file and seek to the end | |
211 | * @P9_OEXCL: only create a file, do not open it | |
212 | * | |
213 | * 9P open modes differ slightly from Posix standard modes. | |
214 | * In particular, there are extra modes which specify different | |
215 | * semantic behaviors than may be available on standard Posix | |
216 | * systems. For example, @P9_OREXEC and @P9_ORCLOSE are modes that | |
217 | * most likely will not be issued from the Linux VFS client, but may | |
218 | * be supported by servers. | |
219 | * | |
220 | * See Also: http://plan9.bell-labs.com/magic/man2html/2/open | |
221 | */ | |
222 | ||
223 | enum p9_open_mode_t { | |
bd238fb4 LI |
224 | P9_OREAD = 0x00, |
225 | P9_OWRITE = 0x01, | |
226 | P9_ORDWR = 0x02, | |
227 | P9_OEXEC = 0x03, | |
bd238fb4 LI |
228 | P9_OTRUNC = 0x10, |
229 | P9_OREXEC = 0x20, | |
230 | P9_ORCLOSE = 0x40, | |
231 | P9_OAPPEND = 0x80, | |
ee443996 EVH |
232 | P9_OEXCL = 0x1000, |
233 | }; | |
234 | ||
235 | /** | |
236 | * enum p9_perm_t - 9P permissions | |
aca00763 | 237 | * @P9_DMDIR: mode bit for directories |
ee443996 EVH |
238 | * @P9_DMAPPEND: mode bit for is append-only |
239 | * @P9_DMEXCL: mode bit for excluse use (only one open handle allowed) | |
aca00763 | 240 | * @P9_DMMOUNT: mode bit for mount points |
ee443996 EVH |
241 | * @P9_DMAUTH: mode bit for authentication file |
242 | * @P9_DMTMP: mode bit for non-backed-up files | |
243 | * @P9_DMSYMLINK: mode bit for symbolic links (9P2000.u) | |
244 | * @P9_DMLINK: mode bit for hard-link (9P2000.u) | |
245 | * @P9_DMDEVICE: mode bit for device files (9P2000.u) | |
246 | * @P9_DMNAMEDPIPE: mode bit for named pipe (9P2000.u) | |
247 | * @P9_DMSOCKET: mode bit for socket (9P2000.u) | |
248 | * @P9_DMSETUID: mode bit for setuid (9P2000.u) | |
249 | * @P9_DMSETGID: mode bit for setgid (9P2000.u) | |
250 | * @P9_DMSETVTX: mode bit for sticky bit (9P2000.u) | |
251 | * | |
252 | * 9P permissions differ slightly from Posix standard modes. | |
253 | * | |
254 | * See Also: http://plan9.bell-labs.com/magic/man2html/2/stat | |
255 | */ | |
256 | enum p9_perm_t { | |
bd238fb4 LI |
257 | P9_DMDIR = 0x80000000, |
258 | P9_DMAPPEND = 0x40000000, | |
259 | P9_DMEXCL = 0x20000000, | |
260 | P9_DMMOUNT = 0x10000000, | |
261 | P9_DMAUTH = 0x08000000, | |
262 | P9_DMTMP = 0x04000000, | |
ee443996 | 263 | /* 9P2000.u extensions */ |
bd238fb4 LI |
264 | P9_DMSYMLINK = 0x02000000, |
265 | P9_DMLINK = 0x01000000, | |
bd238fb4 LI |
266 | P9_DMDEVICE = 0x00800000, |
267 | P9_DMNAMEDPIPE = 0x00200000, | |
268 | P9_DMSOCKET = 0x00100000, | |
269 | P9_DMSETUID = 0x00080000, | |
270 | P9_DMSETGID = 0x00040000, | |
d199d652 | 271 | P9_DMSETVTX = 0x00010000, |
bd238fb4 LI |
272 | }; |
273 | ||
f88657ce AK |
274 | /* 9p2000.L open flags */ |
275 | #define P9_DOTL_RDONLY 00000000 | |
276 | #define P9_DOTL_WRONLY 00000001 | |
277 | #define P9_DOTL_RDWR 00000002 | |
278 | #define P9_DOTL_NOACCESS 00000003 | |
279 | #define P9_DOTL_CREATE 00000100 | |
280 | #define P9_DOTL_EXCL 00000200 | |
281 | #define P9_DOTL_NOCTTY 00000400 | |
282 | #define P9_DOTL_TRUNC 00001000 | |
283 | #define P9_DOTL_APPEND 00002000 | |
284 | #define P9_DOTL_NONBLOCK 00004000 | |
285 | #define P9_DOTL_DSYNC 00010000 | |
286 | #define P9_DOTL_FASYNC 00020000 | |
287 | #define P9_DOTL_DIRECT 00040000 | |
288 | #define P9_DOTL_LARGEFILE 00100000 | |
289 | #define P9_DOTL_DIRECTORY 00200000 | |
290 | #define P9_DOTL_NOFOLLOW 00400000 | |
291 | #define P9_DOTL_NOATIME 01000000 | |
292 | #define P9_DOTL_CLOEXEC 02000000 | |
293 | #define P9_DOTL_SYNC 04000000 | |
294 | ||
295 | /* 9p2000.L at flags */ | |
296 | #define P9_DOTL_AT_REMOVEDIR 0x200 | |
297 | ||
51b8b4fb JG |
298 | /* 9p2000.L lock type */ |
299 | #define P9_LOCK_TYPE_RDLCK 0 | |
300 | #define P9_LOCK_TYPE_WRLCK 1 | |
301 | #define P9_LOCK_TYPE_UNLCK 2 | |
302 | ||
ee443996 EVH |
303 | /** |
304 | * enum p9_qid_t - QID types | |
305 | * @P9_QTDIR: directory | |
306 | * @P9_QTAPPEND: append-only | |
307 | * @P9_QTEXCL: excluse use (only one open handle allowed) | |
308 | * @P9_QTMOUNT: mount points | |
309 | * @P9_QTAUTH: authentication file | |
310 | * @P9_QTTMP: non-backed-up files | |
311 | * @P9_QTSYMLINK: symbolic links (9P2000.u) | |
312 | * @P9_QTLINK: hard-link (9P2000.u) | |
313 | * @P9_QTFILE: normal files | |
314 | * | |
315 | * QID types are a subset of permissions - they are primarily | |
316 | * used to differentiate semantics for a file system entity via | |
25985edc | 317 | * a jump-table. Their value is also the most significant 16 bits |
ee443996 EVH |
318 | * of the permission_t |
319 | * | |
320 | * See Also: http://plan9.bell-labs.com/magic/man2html/2/stat | |
321 | */ | |
322 | enum p9_qid_t { | |
bd238fb4 LI |
323 | P9_QTDIR = 0x80, |
324 | P9_QTAPPEND = 0x40, | |
325 | P9_QTEXCL = 0x20, | |
326 | P9_QTMOUNT = 0x10, | |
327 | P9_QTAUTH = 0x08, | |
328 | P9_QTTMP = 0x04, | |
329 | P9_QTSYMLINK = 0x02, | |
330 | P9_QTLINK = 0x01, | |
331 | P9_QTFILE = 0x00, | |
332 | }; | |
333 | ||
ee443996 | 334 | /* 9P Magic Numbers */ |
bd238fb4 LI |
335 | #define P9_NOTAG (u16)(~0) |
336 | #define P9_NOFID (u32)(~0) | |
337 | #define P9_MAXWELEM 16 | |
338 | ||
339 | /* ample room for Twrite/Rread header */ | |
340 | #define P9_IOHDRSZ 24 | |
341 | ||
7751bdb3 SK |
342 | /* Room for readdir header */ |
343 | #define P9_READDIRHDRSZ 24 | |
344 | ||
abfa034e AK |
345 | /* size of header for zero copy read/write */ |
346 | #define P9_ZC_HDR_SZ 4096 | |
347 | ||
ee443996 EVH |
348 | /** |
349 | * struct p9_qid - file system entity information | |
350 | * @type: 8-bit type &p9_qid_t | |
351 | * @version: 16-bit monotonically incrementing version number | |
352 | * @path: 64-bit per-server-unique ID for a file system element | |
353 | * | |
354 | * qids are identifiers used by 9P servers to track file system | |
355 | * entities. The type is used to differentiate semantics for operations | |
356 | * on the entity (ie. read means something different on a directory than | |
357 | * on a file). The path provides a server unique index for an entity | |
358 | * (roughly analogous to an inode number), while the version is updated | |
359 | * every time a file is modified and can be used to maintain cache | |
360 | * coherency between clients and serves. | |
361 | * Servers will often differentiate purely synthetic entities by setting | |
362 | * their version to 0, signaling that they should never be cached and | |
363 | * should be accessed synchronously. | |
364 | * | |
365 | * See Also://plan9.bell-labs.com/magic/man2html/2/stat | |
366 | */ | |
367 | ||
bd238fb4 LI |
368 | struct p9_qid { |
369 | u8 type; | |
370 | u32 version; | |
371 | u64 path; | |
372 | }; | |
373 | ||
ee443996 | 374 | /** |
aca00763 | 375 | * struct p9_wstat - file system metadata information |
ee443996 | 376 | * @size: length prefix for this stat structure instance |
25985edc LDM |
377 | * @type: the type of the server (equivalent to a major number) |
378 | * @dev: the sub-type of the server (equivalent to a minor number) | |
ee443996 EVH |
379 | * @qid: unique id from the server of type &p9_qid |
380 | * @mode: Plan 9 format permissions of type &p9_perm_t | |
381 | * @atime: Last access/read time | |
382 | * @mtime: Last modify/write time | |
383 | * @length: file length | |
52c14ab3 AK |
384 | * @name: last element of path (aka filename) |
385 | * @uid: owner name | |
386 | * @gid: group owner | |
387 | * @muid: last modifier | |
388 | * @extension: area used to encode extended UNIX support | |
ee443996 EVH |
389 | * @n_uid: numeric user id of owner (part of 9p2000.u extension) |
390 | * @n_gid: numeric group id (part of 9p2000.u extension) | |
391 | * @n_muid: numeric user id of laster modifier (part of 9p2000.u extension) | |
392 | * | |
393 | * See Also: http://plan9.bell-labs.com/magic/man2html/2/stat | |
394 | */ | |
395 | ||
bd238fb4 LI |
396 | struct p9_wstat { |
397 | u16 size; | |
398 | u16 type; | |
399 | u32 dev; | |
400 | struct p9_qid qid; | |
401 | u32 mode; | |
402 | u32 atime; | |
403 | u32 mtime; | |
404 | u64 length; | |
405 | char *name; | |
406 | char *uid; | |
407 | char *gid; | |
408 | char *muid; | |
409 | char *extension; /* 9p2000.u extensions */ | |
447c5094 EB |
410 | kuid_t n_uid; /* 9p2000.u extensions */ |
411 | kgid_t n_gid; /* 9p2000.u extensions */ | |
412 | kuid_t n_muid; /* 9p2000.u extensions */ | |
bd238fb4 LI |
413 | }; |
414 | ||
f0853122 SK |
415 | struct p9_stat_dotl { |
416 | u64 st_result_mask; | |
417 | struct p9_qid qid; | |
418 | u32 st_mode; | |
447c5094 EB |
419 | kuid_t st_uid; |
420 | kgid_t st_gid; | |
f0853122 SK |
421 | u64 st_nlink; |
422 | u64 st_rdev; | |
423 | u64 st_size; | |
424 | u64 st_blksize; | |
425 | u64 st_blocks; | |
426 | u64 st_atime_sec; | |
427 | u64 st_atime_nsec; | |
428 | u64 st_mtime_sec; | |
429 | u64 st_mtime_nsec; | |
430 | u64 st_ctime_sec; | |
431 | u64 st_ctime_nsec; | |
432 | u64 st_btime_sec; | |
433 | u64 st_btime_nsec; | |
434 | u64 st_gen; | |
435 | u64 st_data_version; | |
436 | }; | |
437 | ||
438 | #define P9_STATS_MODE 0x00000001ULL | |
439 | #define P9_STATS_NLINK 0x00000002ULL | |
440 | #define P9_STATS_UID 0x00000004ULL | |
441 | #define P9_STATS_GID 0x00000008ULL | |
442 | #define P9_STATS_RDEV 0x00000010ULL | |
443 | #define P9_STATS_ATIME 0x00000020ULL | |
444 | #define P9_STATS_MTIME 0x00000040ULL | |
445 | #define P9_STATS_CTIME 0x00000080ULL | |
446 | #define P9_STATS_INO 0x00000100ULL | |
447 | #define P9_STATS_SIZE 0x00000200ULL | |
448 | #define P9_STATS_BLOCKS 0x00000400ULL | |
449 | ||
450 | #define P9_STATS_BTIME 0x00000800ULL | |
451 | #define P9_STATS_GEN 0x00001000ULL | |
452 | #define P9_STATS_DATA_VERSION 0x00002000ULL | |
453 | ||
454 | #define P9_STATS_BASIC 0x000007ffULL /* Mask for fields up to BLOCKS */ | |
455 | #define P9_STATS_ALL 0x00003fffULL /* Mask for All fields above */ | |
456 | ||
87d7845a SK |
457 | /** |
458 | * struct p9_iattr_dotl - P9 inode attribute for setattr | |
459 | * @valid: bitfield specifying which fields are valid | |
460 | * same as in struct iattr | |
461 | * @mode: File permission bits | |
462 | * @uid: user id of owner | |
463 | * @gid: group id | |
464 | * @size: File size | |
465 | * @atime_sec: Last access time, seconds | |
466 | * @atime_nsec: Last access time, nanoseconds | |
467 | * @mtime_sec: Last modification time, seconds | |
468 | * @mtime_nsec: Last modification time, nanoseconds | |
469 | */ | |
470 | ||
471 | struct p9_iattr_dotl { | |
472 | u32 valid; | |
473 | u32 mode; | |
447c5094 EB |
474 | kuid_t uid; |
475 | kgid_t gid; | |
87d7845a SK |
476 | u64 size; |
477 | u64 atime_sec; | |
478 | u64 atime_nsec; | |
479 | u64 mtime_sec; | |
480 | u64 mtime_nsec; | |
481 | }; | |
482 | ||
a099027c MK |
483 | #define P9_LOCK_SUCCESS 0 |
484 | #define P9_LOCK_BLOCKED 1 | |
485 | #define P9_LOCK_ERROR 2 | |
486 | #define P9_LOCK_GRACE 3 | |
487 | ||
488 | #define P9_LOCK_FLAGS_BLOCK 1 | |
489 | #define P9_LOCK_FLAGS_RECLAIM 2 | |
490 | ||
491 | /* struct p9_flock: POSIX lock structure | |
492 | * @type - type of lock | |
493 | * @flags - lock flags | |
494 | * @start - starting offset of the lock | |
495 | * @length - number of bytes | |
496 | * @proc_id - process id which wants to take lock | |
497 | * @client_id - client id | |
498 | */ | |
499 | ||
500 | struct p9_flock { | |
501 | u8 type; | |
502 | u32 flags; | |
503 | u64 start; | |
504 | u64 length; | |
505 | u32 proc_id; | |
506 | char *client_id; | |
507 | }; | |
508 | ||
1d769cd1 MK |
509 | /* struct p9_getlock: getlock structure |
510 | * @type - type of lock | |
511 | * @start - starting offset of the lock | |
512 | * @length - number of bytes | |
513 | * @proc_id - process id which wants to take lock | |
514 | * @client_id - client id | |
515 | */ | |
516 | ||
517 | struct p9_getlock { | |
518 | u8 type; | |
519 | u64 start; | |
520 | u64 length; | |
521 | u32 proc_id; | |
522 | char *client_id; | |
523 | }; | |
524 | ||
bda8e775 SK |
525 | struct p9_rstatfs { |
526 | u32 type; | |
527 | u32 bsize; | |
528 | u64 blocks; | |
529 | u64 bfree; | |
530 | u64 bavail; | |
531 | u64 files; | |
532 | u64 ffree; | |
533 | u64 fsid; | |
534 | u32 namelen; | |
535 | }; | |
536 | ||
ee443996 EVH |
537 | /** |
538 | * struct p9_fcall - primary packet structure | |
539 | * @size: prefixed length of the structure | |
540 | * @id: protocol operating identifier of type &p9_msg_t | |
541 | * @tag: transaction id of the request | |
aca00763 | 542 | * @offset: used by marshalling routines to track current position in buffer |
f735195d | 543 | * @capacity: used by marshalling routines to track total malloc'd capacity |
ee443996 | 544 | * @sdata: payload |
ee443996 EVH |
545 | * |
546 | * &p9_fcall represents the structure for all 9P RPC | |
547 | * transactions. Requests are packaged into fcalls, and reponses | |
548 | * must be extracted from them. | |
549 | * | |
550 | * See Also: http://plan9.bell-labs.com/magic/man2html/2/fcall | |
551 | */ | |
bd238fb4 LI |
552 | |
553 | struct p9_fcall { | |
554 | u32 size; | |
555 | u8 id; | |
556 | u16 tag; | |
ace51c4d EVH |
557 | |
558 | size_t offset; | |
559 | size_t capacity; | |
560 | ||
08bb3a50 | 561 | u8 *sdata; |
bd238fb4 LI |
562 | }; |
563 | ||
564 | struct p9_idpool; | |
565 | ||
bd238fb4 LI |
566 | int p9_errstr2errno(char *errstr, int len); |
567 | ||
568 | struct p9_idpool *p9_idpool_create(void); | |
569 | void p9_idpool_destroy(struct p9_idpool *); | |
570 | int p9_idpool_get(struct p9_idpool *p); | |
571 | void p9_idpool_put(int id, struct p9_idpool *p); | |
572 | int p9_idpool_check(int id, struct p9_idpool *p); | |
573 | ||
574 | int p9_error_init(void); | |
887b3ece | 575 | int p9_trans_fd_init(void); |
72029fe8 | 576 | void p9_trans_fd_exit(void); |
bd238fb4 | 577 | #endif /* NET_9P_H */ |