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 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 40 * @P9_DEBUG_FID: fid allocation/deallocation tracking 41 * @P9_DEBUG_PKT: packet marshalling/unmarshalling 42 * @P9_DEBUG_FSC: FS-cache tracing 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), 57 P9_DEBUG_FID = (1<<9), 58 P9_DEBUG_PKT = (1<<10), 59 P9_DEBUG_FSC = (1<<11), 60 }; 61 62 #ifdef CONFIG_NET_9P_DEBUG 63 extern unsigned int p9_debug_level; 64 65 #define P9_DPRINTK(level, format, arg...) \ 66 do { \ 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 } \ 75 } while (0) 76 77 #else 78 #define P9_DPRINTK(level, format, arg...) do { } while (0) 79 #endif 80 81 #define P9_EPRINTK(level, format, arg...) \ 82 do { \ 83 printk(level "9p: %s (%d): " \ 84 format , __func__, task_pid_nr(current), ## arg); \ 85 } while (0) 86 87 /** 88 * enum p9_msg_t - 9P message types 89 * @P9_TLERROR: not used 90 * @P9_RLERROR: response for any failed request for 9P2000.L 91 * @P9_TSTATFS: file system status request 92 * @P9_RSTATFS: file system status response 93 * @P9_TSYMLINK: make symlink request 94 * @P9_RSYMLINK: make symlink response 95 * @P9_TMKNOD: create a special file object request 96 * @P9_RMKNOD: create a special file object response 97 * @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 99 * @P9_TRENAME: rename request 100 * @P9_RRENAME: rename response 101 * @P9_TMKDIR: create a directory request 102 * @P9_RMKDIR: create a directory response 103 * @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 transferred 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 */ 140 141 enum p9_msg_t { 142 P9_TLERROR = 6, 143 P9_RLERROR, 144 P9_TSTATFS = 8, 145 P9_RSTATFS, 146 P9_TLOPEN = 12, 147 P9_RLOPEN, 148 P9_TLCREATE = 14, 149 P9_RLCREATE, 150 P9_TSYMLINK = 16, 151 P9_RSYMLINK, 152 P9_TMKNOD = 18, 153 P9_RMKNOD, 154 P9_TRENAME = 20, 155 P9_RRENAME, 156 P9_TREADLINK = 22, 157 P9_RREADLINK, 158 P9_TGETATTR = 24, 159 P9_RGETATTR, 160 P9_TSETATTR = 26, 161 P9_RSETATTR, 162 P9_TXATTRWALK = 30, 163 P9_RXATTRWALK, 164 P9_TXATTRCREATE = 32, 165 P9_RXATTRCREATE, 166 P9_TREADDIR = 40, 167 P9_RREADDIR, 168 P9_TFSYNC = 50, 169 P9_RFSYNC, 170 P9_TLOCK = 52, 171 P9_RLOCK, 172 P9_TGETLOCK = 54, 173 P9_RGETLOCK, 174 P9_TLINK = 70, 175 P9_RLINK, 176 P9_TMKDIR = 72, 177 P9_RMKDIR, 178 P9_TVERSION = 100, 179 P9_RVERSION, 180 P9_TAUTH = 102, 181 P9_RAUTH, 182 P9_TATTACH = 104, 183 P9_RATTACH, 184 P9_TERROR = 106, 185 P9_RERROR, 186 P9_TFLUSH = 108, 187 P9_RFLUSH, 188 P9_TWALK = 110, 189 P9_RWALK, 190 P9_TOPEN = 112, 191 P9_ROPEN, 192 P9_TCREATE = 114, 193 P9_RCREATE, 194 P9_TREAD = 116, 195 P9_RREAD, 196 P9_TWRITE = 118, 197 P9_RWRITE, 198 P9_TCLUNK = 120, 199 P9_RCLUNK, 200 P9_TREMOVE = 122, 201 P9_RREMOVE, 202 P9_TSTAT = 124, 203 P9_RSTAT, 204 P9_TWSTAT = 126, 205 P9_RWSTAT, 206 }; 207 208 /** 209 * enum p9_open_mode_t - 9P open modes 210 * @P9_OREAD: open file for reading only 211 * @P9_OWRITE: open file for writing only 212 * @P9_ORDWR: open file for reading or writing 213 * @P9_OEXEC: open file for execution 214 * @P9_OTRUNC: truncate file to zero-length before opening it 215 * @P9_OREXEC: close the file when an exec(2) system call is made 216 * @P9_ORCLOSE: remove the file when the file is closed 217 * @P9_OAPPEND: open the file and seek to the end 218 * @P9_OEXCL: only create a file, do not open it 219 * 220 * 9P open modes differ slightly from Posix standard modes. 221 * In particular, there are extra modes which specify different 222 * semantic behaviors than may be available on standard Posix 223 * systems. For example, @P9_OREXEC and @P9_ORCLOSE are modes that 224 * most likely will not be issued from the Linux VFS client, but may 225 * be supported by servers. 226 * 227 * See Also: http://plan9.bell-labs.com/magic/man2html/2/open 228 */ 229 230 enum p9_open_mode_t { 231 P9_OREAD = 0x00, 232 P9_OWRITE = 0x01, 233 P9_ORDWR = 0x02, 234 P9_OEXEC = 0x03, 235 P9_OTRUNC = 0x10, 236 P9_OREXEC = 0x20, 237 P9_ORCLOSE = 0x40, 238 P9_OAPPEND = 0x80, 239 P9_OEXCL = 0x1000, 240 }; 241 242 /** 243 * enum p9_perm_t - 9P permissions 244 * @P9_DMDIR: mode bite for directories 245 * @P9_DMAPPEND: mode bit for is append-only 246 * @P9_DMEXCL: mode bit for excluse use (only one open handle allowed) 247 * @P9_DMMOUNT: mode bite for mount points 248 * @P9_DMAUTH: mode bit for authentication file 249 * @P9_DMTMP: mode bit for non-backed-up files 250 * @P9_DMSYMLINK: mode bit for symbolic links (9P2000.u) 251 * @P9_DMLINK: mode bit for hard-link (9P2000.u) 252 * @P9_DMDEVICE: mode bit for device files (9P2000.u) 253 * @P9_DMNAMEDPIPE: mode bit for named pipe (9P2000.u) 254 * @P9_DMSOCKET: mode bit for socket (9P2000.u) 255 * @P9_DMSETUID: mode bit for setuid (9P2000.u) 256 * @P9_DMSETGID: mode bit for setgid (9P2000.u) 257 * @P9_DMSETVTX: mode bit for sticky bit (9P2000.u) 258 * 259 * 9P permissions differ slightly from Posix standard modes. 260 * 261 * See Also: http://plan9.bell-labs.com/magic/man2html/2/stat 262 */ 263 enum p9_perm_t { 264 P9_DMDIR = 0x80000000, 265 P9_DMAPPEND = 0x40000000, 266 P9_DMEXCL = 0x20000000, 267 P9_DMMOUNT = 0x10000000, 268 P9_DMAUTH = 0x08000000, 269 P9_DMTMP = 0x04000000, 270 /* 9P2000.u extensions */ 271 P9_DMSYMLINK = 0x02000000, 272 P9_DMLINK = 0x01000000, 273 P9_DMDEVICE = 0x00800000, 274 P9_DMNAMEDPIPE = 0x00200000, 275 P9_DMSOCKET = 0x00100000, 276 P9_DMSETUID = 0x00080000, 277 P9_DMSETGID = 0x00040000, 278 P9_DMSETVTX = 0x00010000, 279 }; 280 281 /** 282 * enum p9_qid_t - QID types 283 * @P9_QTDIR: directory 284 * @P9_QTAPPEND: append-only 285 * @P9_QTEXCL: excluse use (only one open handle allowed) 286 * @P9_QTMOUNT: mount points 287 * @P9_QTAUTH: authentication file 288 * @P9_QTTMP: non-backed-up files 289 * @P9_QTSYMLINK: symbolic links (9P2000.u) 290 * @P9_QTLINK: hard-link (9P2000.u) 291 * @P9_QTFILE: normal files 292 * 293 * QID types are a subset of permissions - they are primarily 294 * used to differentiate semantics for a file system entity via 295 * a jump-table. Their value is also the most significant 16 bits 296 * of the permission_t 297 * 298 * See Also: http://plan9.bell-labs.com/magic/man2html/2/stat 299 */ 300 enum p9_qid_t { 301 P9_QTDIR = 0x80, 302 P9_QTAPPEND = 0x40, 303 P9_QTEXCL = 0x20, 304 P9_QTMOUNT = 0x10, 305 P9_QTAUTH = 0x08, 306 P9_QTTMP = 0x04, 307 P9_QTSYMLINK = 0x02, 308 P9_QTLINK = 0x01, 309 P9_QTFILE = 0x00, 310 }; 311 312 /* 9P Magic Numbers */ 313 #define P9_NOTAG (u16)(~0) 314 #define P9_NOFID (u32)(~0) 315 #define P9_MAXWELEM 16 316 317 /* ample room for Twrite/Rread header */ 318 #define P9_IOHDRSZ 24 319 320 /* Room for readdir header */ 321 #define P9_READDIRHDRSZ 24 322 323 /** 324 * struct p9_str - length prefixed string type 325 * @len: length of the string 326 * @str: the string 327 * 328 * The protocol uses length prefixed strings for all 329 * string data, so we replicate that for our internal 330 * string members. 331 */ 332 333 struct p9_str { 334 u16 len; 335 char *str; 336 }; 337 338 /** 339 * struct p9_qid - file system entity information 340 * @type: 8-bit type &p9_qid_t 341 * @version: 16-bit monotonically incrementing version number 342 * @path: 64-bit per-server-unique ID for a file system element 343 * 344 * qids are identifiers used by 9P servers to track file system 345 * entities. The type is used to differentiate semantics for operations 346 * on the entity (ie. read means something different on a directory than 347 * on a file). The path provides a server unique index for an entity 348 * (roughly analogous to an inode number), while the version is updated 349 * every time a file is modified and can be used to maintain cache 350 * coherency between clients and serves. 351 * Servers will often differentiate purely synthetic entities by setting 352 * their version to 0, signaling that they should never be cached and 353 * should be accessed synchronously. 354 * 355 * See Also://plan9.bell-labs.com/magic/man2html/2/stat 356 */ 357 358 struct p9_qid { 359 u8 type; 360 u32 version; 361 u64 path; 362 }; 363 364 /** 365 * struct p9_stat - file system metadata information 366 * @size: length prefix for this stat structure instance 367 * @type: the type of the server (equivalent to a major number) 368 * @dev: the sub-type of the server (equivalent to a minor number) 369 * @qid: unique id from the server of type &p9_qid 370 * @mode: Plan 9 format permissions of type &p9_perm_t 371 * @atime: Last access/read time 372 * @mtime: Last modify/write time 373 * @length: file length 374 * @name: last element of path (aka filename) in type &p9_str 375 * @uid: owner name in type &p9_str 376 * @gid: group owner in type &p9_str 377 * @muid: last modifier in type &p9_str 378 * @extension: area used to encode extended UNIX support in type &p9_str 379 * @n_uid: numeric user id of owner (part of 9p2000.u extension) 380 * @n_gid: numeric group id (part of 9p2000.u extension) 381 * @n_muid: numeric user id of laster modifier (part of 9p2000.u extension) 382 * 383 * See Also: http://plan9.bell-labs.com/magic/man2html/2/stat 384 */ 385 386 struct p9_wstat { 387 u16 size; 388 u16 type; 389 u32 dev; 390 struct p9_qid qid; 391 u32 mode; 392 u32 atime; 393 u32 mtime; 394 u64 length; 395 char *name; 396 char *uid; 397 char *gid; 398 char *muid; 399 char *extension; /* 9p2000.u extensions */ 400 u32 n_uid; /* 9p2000.u extensions */ 401 u32 n_gid; /* 9p2000.u extensions */ 402 u32 n_muid; /* 9p2000.u extensions */ 403 }; 404 405 struct p9_stat_dotl { 406 u64 st_result_mask; 407 struct p9_qid qid; 408 u32 st_mode; 409 u32 st_uid; 410 u32 st_gid; 411 u64 st_nlink; 412 u64 st_rdev; 413 u64 st_size; 414 u64 st_blksize; 415 u64 st_blocks; 416 u64 st_atime_sec; 417 u64 st_atime_nsec; 418 u64 st_mtime_sec; 419 u64 st_mtime_nsec; 420 u64 st_ctime_sec; 421 u64 st_ctime_nsec; 422 u64 st_btime_sec; 423 u64 st_btime_nsec; 424 u64 st_gen; 425 u64 st_data_version; 426 }; 427 428 #define P9_STATS_MODE 0x00000001ULL 429 #define P9_STATS_NLINK 0x00000002ULL 430 #define P9_STATS_UID 0x00000004ULL 431 #define P9_STATS_GID 0x00000008ULL 432 #define P9_STATS_RDEV 0x00000010ULL 433 #define P9_STATS_ATIME 0x00000020ULL 434 #define P9_STATS_MTIME 0x00000040ULL 435 #define P9_STATS_CTIME 0x00000080ULL 436 #define P9_STATS_INO 0x00000100ULL 437 #define P9_STATS_SIZE 0x00000200ULL 438 #define P9_STATS_BLOCKS 0x00000400ULL 439 440 #define P9_STATS_BTIME 0x00000800ULL 441 #define P9_STATS_GEN 0x00001000ULL 442 #define P9_STATS_DATA_VERSION 0x00002000ULL 443 444 #define P9_STATS_BASIC 0x000007ffULL /* Mask for fields up to BLOCKS */ 445 #define P9_STATS_ALL 0x00003fffULL /* Mask for All fields above */ 446 447 /** 448 * struct p9_iattr_dotl - P9 inode attribute for setattr 449 * @valid: bitfield specifying which fields are valid 450 * same as in struct iattr 451 * @mode: File permission bits 452 * @uid: user id of owner 453 * @gid: group id 454 * @size: File size 455 * @atime_sec: Last access time, seconds 456 * @atime_nsec: Last access time, nanoseconds 457 * @mtime_sec: Last modification time, seconds 458 * @mtime_nsec: Last modification time, nanoseconds 459 */ 460 461 struct p9_iattr_dotl { 462 u32 valid; 463 u32 mode; 464 u32 uid; 465 u32 gid; 466 u64 size; 467 u64 atime_sec; 468 u64 atime_nsec; 469 u64 mtime_sec; 470 u64 mtime_nsec; 471 }; 472 473 #define P9_LOCK_SUCCESS 0 474 #define P9_LOCK_BLOCKED 1 475 #define P9_LOCK_ERROR 2 476 #define P9_LOCK_GRACE 3 477 478 #define P9_LOCK_FLAGS_BLOCK 1 479 #define P9_LOCK_FLAGS_RECLAIM 2 480 481 /* struct p9_flock: POSIX lock structure 482 * @type - type of lock 483 * @flags - lock flags 484 * @start - starting offset of the lock 485 * @length - number of bytes 486 * @proc_id - process id which wants to take lock 487 * @client_id - client id 488 */ 489 490 struct p9_flock { 491 u8 type; 492 u32 flags; 493 u64 start; 494 u64 length; 495 u32 proc_id; 496 char *client_id; 497 }; 498 499 /* struct p9_getlock: getlock structure 500 * @type - type of lock 501 * @start - starting offset of the lock 502 * @length - number of bytes 503 * @proc_id - process id which wants to take lock 504 * @client_id - client id 505 */ 506 507 struct p9_getlock { 508 u8 type; 509 u64 start; 510 u64 length; 511 u32 proc_id; 512 char *client_id; 513 }; 514 515 /* Structures for Protocol Operations */ 516 struct p9_tstatfs { 517 u32 fid; 518 }; 519 520 struct p9_rstatfs { 521 u32 type; 522 u32 bsize; 523 u64 blocks; 524 u64 bfree; 525 u64 bavail; 526 u64 files; 527 u64 ffree; 528 u64 fsid; 529 u32 namelen; 530 }; 531 532 struct p9_trename { 533 u32 fid; 534 u32 newdirfid; 535 struct p9_str name; 536 }; 537 538 struct p9_rrename { 539 }; 540 541 struct p9_tversion { 542 u32 msize; 543 struct p9_str version; 544 }; 545 546 struct p9_rversion { 547 u32 msize; 548 struct p9_str version; 549 }; 550 551 struct p9_tauth { 552 u32 afid; 553 struct p9_str uname; 554 struct p9_str aname; 555 u32 n_uname; /* 9P2000.u extensions */ 556 }; 557 558 struct p9_rauth { 559 struct p9_qid qid; 560 }; 561 562 struct p9_rerror { 563 struct p9_str error; 564 u32 errno; /* 9p2000.u extension */ 565 }; 566 567 struct p9_tflush { 568 u16 oldtag; 569 }; 570 571 struct p9_rflush { 572 }; 573 574 struct p9_tattach { 575 u32 fid; 576 u32 afid; 577 struct p9_str uname; 578 struct p9_str aname; 579 u32 n_uname; /* 9P2000.u extensions */ 580 }; 581 582 struct p9_rattach { 583 struct p9_qid qid; 584 }; 585 586 struct p9_twalk { 587 u32 fid; 588 u32 newfid; 589 u16 nwname; 590 struct p9_str wnames[16]; 591 }; 592 593 struct p9_rwalk { 594 u16 nwqid; 595 struct p9_qid wqids[16]; 596 }; 597 598 struct p9_topen { 599 u32 fid; 600 u8 mode; 601 }; 602 603 struct p9_ropen { 604 struct p9_qid qid; 605 u32 iounit; 606 }; 607 608 struct p9_tcreate { 609 u32 fid; 610 struct p9_str name; 611 u32 perm; 612 u8 mode; 613 struct p9_str extension; 614 }; 615 616 struct p9_rcreate { 617 struct p9_qid qid; 618 u32 iounit; 619 }; 620 621 struct p9_tread { 622 u32 fid; 623 u64 offset; 624 u32 count; 625 }; 626 627 struct p9_rread { 628 u32 count; 629 u8 *data; 630 }; 631 632 struct p9_twrite { 633 u32 fid; 634 u64 offset; 635 u32 count; 636 u8 *data; 637 }; 638 639 struct p9_rwrite { 640 u32 count; 641 }; 642 643 struct p9_treaddir { 644 u32 fid; 645 u64 offset; 646 u32 count; 647 }; 648 649 struct p9_rreaddir { 650 u32 count; 651 u8 *data; 652 }; 653 654 655 struct p9_tclunk { 656 u32 fid; 657 }; 658 659 struct p9_rclunk { 660 }; 661 662 struct p9_tremove { 663 u32 fid; 664 }; 665 666 struct p9_rremove { 667 }; 668 669 struct p9_tstat { 670 u32 fid; 671 }; 672 673 struct p9_rstat { 674 struct p9_wstat stat; 675 }; 676 677 struct p9_twstat { 678 u32 fid; 679 struct p9_wstat stat; 680 }; 681 682 struct p9_rwstat { 683 }; 684 685 /** 686 * struct p9_fcall - primary packet structure 687 * @size: prefixed length of the structure 688 * @id: protocol operating identifier of type &p9_msg_t 689 * @tag: transaction id of the request 690 * @offset: used by marshalling routines to track currentposition in buffer 691 * @capacity: used by marshalling routines to track total malloc'd capacity 692 * @pubuf: Payload user buffer given by the caller 693 * @pubuf: Payload kernel buffer given by the caller 694 * @pbuf_size: pubuf/pkbuf(only one will be !NULL) size to be read/write. 695 * @private: For transport layer's use. 696 * @sdata: payload 697 * 698 * &p9_fcall represents the structure for all 9P RPC 699 * transactions. Requests are packaged into fcalls, and reponses 700 * must be extracted from them. 701 * 702 * See Also: http://plan9.bell-labs.com/magic/man2html/2/fcall 703 */ 704 705 struct p9_fcall { 706 u32 size; 707 u8 id; 708 u16 tag; 709 710 size_t offset; 711 size_t capacity; 712 char __user *pubuf; 713 char *pkbuf; 714 size_t pbuf_size; 715 void *private; 716 717 uint8_t *sdata; 718 }; 719 720 struct p9_idpool; 721 722 int p9_errstr2errno(char *errstr, int len); 723 724 struct p9_idpool *p9_idpool_create(void); 725 void p9_idpool_destroy(struct p9_idpool *); 726 int p9_idpool_get(struct p9_idpool *p); 727 void p9_idpool_put(int id, struct p9_idpool *p); 728 int p9_idpool_check(int id, struct p9_idpool *p); 729 730 int p9_error_init(void); 731 int p9_errstr2errno(char *, int); 732 int p9_trans_fd_init(void); 733 void p9_trans_fd_exit(void); 734 #endif /* NET_9P_H */ 735