Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 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 | |
Eric Van Hensbergen | ee44399 | 2008-03-05 07:08:09 -0600 | [diff] [blame] | 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 |
Eric Van Hensbergen | 51a87c5 | 2008-10-16 08:30:07 -0500 | [diff] [blame] | 40 | * @P9_DEBUG_FID: fid allocation/deallocation tracking |
Abhishek Kulkarni | 60e78d2 | 2009-09-23 13:00:27 -0500 | [diff] [blame^] | 41 | * @P9_DEBUG_PKT: packet marshalling/unmarshalling |
| 42 | * @P9_DEBUG_FSC: FS-cache tracing |
Eric Van Hensbergen | ee44399 | 2008-03-05 07:08:09 -0600 | [diff] [blame] | 43 | * |
| 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 | |
| 48 | enum 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 Hensbergen | 51a87c5 | 2008-10-16 08:30:07 -0500 | [diff] [blame] | 57 | P9_DEBUG_FID = (1<<9), |
Eric Van Hensbergen | e7f4b8f | 2008-10-17 16:20:07 -0500 | [diff] [blame] | 58 | P9_DEBUG_PKT = (1<<10), |
Abhishek Kulkarni | 60e78d2 | 2009-09-23 13:00:27 -0500 | [diff] [blame^] | 59 | P9_DEBUG_FSC = (1<<11), |
Eric Van Hensbergen | ee44399 | 2008-03-05 07:08:09 -0600 | [diff] [blame] | 60 | }; |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 61 | |
Eric Van Hensbergen | 0b15a3a | 2008-10-22 18:47:40 -0500 | [diff] [blame] | 62 | #ifdef CONFIG_NET_9P_DEBUG |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 63 | extern unsigned int p9_debug_level; |
| 64 | |
| 65 | #define P9_DPRINTK(level, format, arg...) \ |
| 66 | do { \ |
Eric Van Hensbergen | 02da398 | 2008-10-16 08:29:30 -0500 | [diff] [blame] | 67 | 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 Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 75 | } while (0) |
| 76 | |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 77 | #else |
| 78 | #define P9_DPRINTK(level, format, arg...) do { } while (0) |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 79 | #endif |
| 80 | |
| 81 | #define P9_EPRINTK(level, format, arg...) \ |
| 82 | do { \ |
| 83 | printk(level "9p: %s (%d): " \ |
Harvey Harrison | d5c003b | 2008-10-15 22:01:24 -0700 | [diff] [blame] | 84 | format , __func__, task_pid_nr(current), ## arg); \ |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 85 | } while (0) |
| 86 | |
Eric Van Hensbergen | ee44399 | 2008-03-05 07:08:09 -0600 | [diff] [blame] | 87 | /** |
| 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 Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 126 | |
Eric Van Hensbergen | ee44399 | 2008-03-05 07:08:09 -0600 | [diff] [blame] | 127 | enum p9_msg_t { |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 128 | 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 Hensbergen | ee44399 | 2008-03-05 07:08:09 -0600 | [diff] [blame] | 158 | /** |
| 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 | |
| 180 | enum p9_open_mode_t { |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 181 | P9_OREAD = 0x00, |
| 182 | P9_OWRITE = 0x01, |
| 183 | P9_ORDWR = 0x02, |
| 184 | P9_OEXEC = 0x03, |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 185 | P9_OTRUNC = 0x10, |
| 186 | P9_OREXEC = 0x20, |
| 187 | P9_ORCLOSE = 0x40, |
| 188 | P9_OAPPEND = 0x80, |
Eric Van Hensbergen | ee44399 | 2008-03-05 07:08:09 -0600 | [diff] [blame] | 189 | P9_OEXCL = 0x1000, |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 190 | }; |
| 191 | |
Eric Van Hensbergen | ee44399 | 2008-03-05 07:08:09 -0600 | [diff] [blame] | 192 | /** |
| 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 | */ |
| 213 | enum p9_perm_t { |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 214 | 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 Hensbergen | ee44399 | 2008-03-05 07:08:09 -0600 | [diff] [blame] | 220 | /* 9P2000.u extensions */ |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 221 | P9_DMSYMLINK = 0x02000000, |
| 222 | P9_DMLINK = 0x01000000, |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 223 | P9_DMDEVICE = 0x00800000, |
| 224 | P9_DMNAMEDPIPE = 0x00200000, |
| 225 | P9_DMSOCKET = 0x00100000, |
| 226 | P9_DMSETUID = 0x00080000, |
| 227 | P9_DMSETGID = 0x00040000, |
Anthony Liguori | d199d65 | 2008-02-06 19:25:06 -0600 | [diff] [blame] | 228 | P9_DMSETVTX = 0x00010000, |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 229 | }; |
| 230 | |
Eric Van Hensbergen | ee44399 | 2008-03-05 07:08:09 -0600 | [diff] [blame] | 231 | /** |
| 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 | */ |
| 250 | enum p9_qid_t { |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 251 | 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 Hensbergen | ee44399 | 2008-03-05 07:08:09 -0600 | [diff] [blame] | 262 | /* 9P Magic Numbers */ |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 263 | #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 Hensbergen | ee44399 | 2008-03-05 07:08:09 -0600 | [diff] [blame] | 270 | /** |
| 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 Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 280 | struct p9_str { |
| 281 | u16 len; |
| 282 | char *str; |
| 283 | }; |
| 284 | |
Eric Van Hensbergen | ee44399 | 2008-03-05 07:08:09 -0600 | [diff] [blame] | 285 | /** |
| 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 Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 305 | struct p9_qid { |
| 306 | u8 type; |
| 307 | u32 version; |
| 308 | u64 path; |
| 309 | }; |
| 310 | |
Eric Van Hensbergen | ee44399 | 2008-03-05 07:08:09 -0600 | [diff] [blame] | 311 | /** |
| 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 Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 333 | struct p9_wstat { |
| 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 | char *name; |
| 343 | char *uid; |
| 344 | char *gid; |
| 345 | char *muid; |
| 346 | char *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 | |
| 352 | /* Structures for Protocol Operations */ |
| 353 | struct p9_tversion { |
| 354 | u32 msize; |
| 355 | struct p9_str version; |
| 356 | }; |
| 357 | |
| 358 | struct p9_rversion { |
| 359 | u32 msize; |
| 360 | struct p9_str version; |
| 361 | }; |
| 362 | |
| 363 | struct p9_tauth { |
| 364 | u32 afid; |
| 365 | struct p9_str uname; |
| 366 | struct p9_str aname; |
Latchesar Ionkov | ba17674 | 2007-10-17 14:31:07 -0500 | [diff] [blame] | 367 | u32 n_uname; /* 9P2000.u extensions */ |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 368 | }; |
| 369 | |
| 370 | struct p9_rauth { |
| 371 | struct p9_qid qid; |
| 372 | }; |
| 373 | |
| 374 | struct p9_rerror { |
| 375 | struct p9_str error; |
| 376 | u32 errno; /* 9p2000.u extension */ |
| 377 | }; |
| 378 | |
| 379 | struct p9_tflush { |
| 380 | u16 oldtag; |
| 381 | }; |
| 382 | |
| 383 | struct p9_rflush { |
| 384 | }; |
| 385 | |
| 386 | struct p9_tattach { |
| 387 | u32 fid; |
| 388 | u32 afid; |
| 389 | struct p9_str uname; |
| 390 | struct p9_str aname; |
Latchesar Ionkov | ba17674 | 2007-10-17 14:31:07 -0500 | [diff] [blame] | 391 | u32 n_uname; /* 9P2000.u extensions */ |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 392 | }; |
| 393 | |
| 394 | struct p9_rattach { |
| 395 | struct p9_qid qid; |
| 396 | }; |
| 397 | |
| 398 | struct p9_twalk { |
| 399 | u32 fid; |
| 400 | u32 newfid; |
| 401 | u16 nwname; |
| 402 | struct p9_str wnames[16]; |
| 403 | }; |
| 404 | |
| 405 | struct p9_rwalk { |
| 406 | u16 nwqid; |
| 407 | struct p9_qid wqids[16]; |
| 408 | }; |
| 409 | |
| 410 | struct p9_topen { |
| 411 | u32 fid; |
| 412 | u8 mode; |
| 413 | }; |
| 414 | |
| 415 | struct p9_ropen { |
| 416 | struct p9_qid qid; |
| 417 | u32 iounit; |
| 418 | }; |
| 419 | |
| 420 | struct p9_tcreate { |
| 421 | u32 fid; |
| 422 | struct p9_str name; |
| 423 | u32 perm; |
| 424 | u8 mode; |
| 425 | struct p9_str extension; |
| 426 | }; |
| 427 | |
| 428 | struct p9_rcreate { |
| 429 | struct p9_qid qid; |
| 430 | u32 iounit; |
| 431 | }; |
| 432 | |
| 433 | struct p9_tread { |
| 434 | u32 fid; |
| 435 | u64 offset; |
| 436 | u32 count; |
| 437 | }; |
| 438 | |
| 439 | struct p9_rread { |
| 440 | u32 count; |
| 441 | u8 *data; |
| 442 | }; |
| 443 | |
| 444 | struct p9_twrite { |
| 445 | u32 fid; |
| 446 | u64 offset; |
| 447 | u32 count; |
| 448 | u8 *data; |
| 449 | }; |
| 450 | |
| 451 | struct p9_rwrite { |
| 452 | u32 count; |
| 453 | }; |
| 454 | |
| 455 | struct p9_tclunk { |
| 456 | u32 fid; |
| 457 | }; |
| 458 | |
| 459 | struct p9_rclunk { |
| 460 | }; |
| 461 | |
| 462 | struct p9_tremove { |
| 463 | u32 fid; |
| 464 | }; |
| 465 | |
| 466 | struct p9_rremove { |
| 467 | }; |
| 468 | |
| 469 | struct p9_tstat { |
| 470 | u32 fid; |
| 471 | }; |
| 472 | |
| 473 | struct p9_rstat { |
Eric Van Hensbergen | 02da398 | 2008-10-16 08:29:30 -0500 | [diff] [blame] | 474 | struct p9_wstat stat; |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 475 | }; |
| 476 | |
| 477 | struct p9_twstat { |
| 478 | u32 fid; |
Eric Van Hensbergen | 02da398 | 2008-10-16 08:29:30 -0500 | [diff] [blame] | 479 | struct p9_wstat stat; |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 480 | }; |
| 481 | |
| 482 | struct p9_rwstat { |
| 483 | }; |
| 484 | |
Eric Van Hensbergen | ee44399 | 2008-03-05 07:08:09 -0600 | [diff] [blame] | 485 | /** |
| 486 | * struct p9_fcall - primary packet structure |
| 487 | * @size: prefixed length of the structure |
| 488 | * @id: protocol operating identifier of type &p9_msg_t |
| 489 | * @tag: transaction id of the request |
Eric Van Hensbergen | ace51c4 | 2008-10-13 20:40:27 -0500 | [diff] [blame] | 490 | * @offset: used by marshalling routines to track currentposition in buffer |
| 491 | * @capacity: used by marshalling routines to track total capacity |
Eric Van Hensbergen | ee44399 | 2008-03-05 07:08:09 -0600 | [diff] [blame] | 492 | * @sdata: payload |
Eric Van Hensbergen | ee44399 | 2008-03-05 07:08:09 -0600 | [diff] [blame] | 493 | * |
| 494 | * &p9_fcall represents the structure for all 9P RPC |
| 495 | * transactions. Requests are packaged into fcalls, and reponses |
| 496 | * must be extracted from them. |
| 497 | * |
| 498 | * See Also: http://plan9.bell-labs.com/magic/man2html/2/fcall |
| 499 | */ |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 500 | |
| 501 | struct p9_fcall { |
| 502 | u32 size; |
| 503 | u8 id; |
| 504 | u16 tag; |
Eric Van Hensbergen | ace51c4 | 2008-10-13 20:40:27 -0500 | [diff] [blame] | 505 | |
| 506 | size_t offset; |
| 507 | size_t capacity; |
| 508 | |
| 509 | uint8_t *sdata; |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 510 | }; |
| 511 | |
| 512 | struct p9_idpool; |
| 513 | |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 514 | int p9_errstr2errno(char *errstr, int len); |
| 515 | |
| 516 | struct p9_idpool *p9_idpool_create(void); |
| 517 | void p9_idpool_destroy(struct p9_idpool *); |
| 518 | int p9_idpool_get(struct p9_idpool *p); |
| 519 | void p9_idpool_put(int id, struct p9_idpool *p); |
| 520 | int p9_idpool_check(int id, struct p9_idpool *p); |
| 521 | |
| 522 | int p9_error_init(void); |
| 523 | int p9_errstr2errno(char *, int); |
Eric Van Hensbergen | 887b3ec | 2008-05-08 20:26:37 -0500 | [diff] [blame] | 524 | int p9_trans_fd_init(void); |
Tejun Heo | 72029fe | 2008-09-24 16:22:23 -0500 | [diff] [blame] | 525 | void p9_trans_fd_exit(void); |
Latchesar Ionkov | bd238fb | 2007-07-10 17:57:28 -0500 | [diff] [blame] | 526 | #endif /* NET_9P_H */ |