| 1 | /* |
| 2 | * linux/fs/9p/vfs_inode.c |
| 3 | * |
| 4 | * This file contains vfs inode ops for the 9P2000 protocol. |
| 5 | * |
| 6 | * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com> |
| 7 | * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov> |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 |
| 11 | * as published by the Free Software Foundation. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to: |
| 20 | * Free Software Foundation |
| 21 | * 51 Franklin Street, Fifth Floor |
| 22 | * Boston, MA 02111-1301 USA |
| 23 | * |
| 24 | */ |
| 25 | |
| 26 | #include <linux/module.h> |
| 27 | #include <linux/errno.h> |
| 28 | #include <linux/fs.h> |
| 29 | #include <linux/file.h> |
| 30 | #include <linux/pagemap.h> |
| 31 | #include <linux/stat.h> |
| 32 | #include <linux/string.h> |
| 33 | #include <linux/inet.h> |
| 34 | #include <linux/namei.h> |
| 35 | #include <linux/idr.h> |
| 36 | #include <linux/sched.h> |
| 37 | #include <net/9p/9p.h> |
| 38 | #include <net/9p/client.h> |
| 39 | |
| 40 | #include "v9fs.h" |
| 41 | #include "v9fs_vfs.h" |
| 42 | #include "fid.h" |
| 43 | |
| 44 | static const struct inode_operations v9fs_dir_inode_operations; |
| 45 | static const struct inode_operations v9fs_dir_inode_operations_ext; |
| 46 | static const struct inode_operations v9fs_file_inode_operations; |
| 47 | static const struct inode_operations v9fs_symlink_inode_operations; |
| 48 | |
| 49 | /** |
| 50 | * unixmode2p9mode - convert unix mode bits to plan 9 |
| 51 | * @v9ses: v9fs session information |
| 52 | * @mode: mode to convert |
| 53 | * |
| 54 | */ |
| 55 | |
| 56 | static int unixmode2p9mode(struct v9fs_session_info *v9ses, int mode) |
| 57 | { |
| 58 | int res; |
| 59 | res = mode & 0777; |
| 60 | if (S_ISDIR(mode)) |
| 61 | res |= P9_DMDIR; |
| 62 | if (v9fs_extended(v9ses)) { |
| 63 | if (S_ISLNK(mode)) |
| 64 | res |= P9_DMSYMLINK; |
| 65 | if (v9ses->nodev == 0) { |
| 66 | if (S_ISSOCK(mode)) |
| 67 | res |= P9_DMSOCKET; |
| 68 | if (S_ISFIFO(mode)) |
| 69 | res |= P9_DMNAMEDPIPE; |
| 70 | if (S_ISBLK(mode)) |
| 71 | res |= P9_DMDEVICE; |
| 72 | if (S_ISCHR(mode)) |
| 73 | res |= P9_DMDEVICE; |
| 74 | } |
| 75 | |
| 76 | if ((mode & S_ISUID) == S_ISUID) |
| 77 | res |= P9_DMSETUID; |
| 78 | if ((mode & S_ISGID) == S_ISGID) |
| 79 | res |= P9_DMSETGID; |
| 80 | if ((mode & S_ISVTX) == S_ISVTX) |
| 81 | res |= P9_DMSETVTX; |
| 82 | if ((mode & P9_DMLINK)) |
| 83 | res |= P9_DMLINK; |
| 84 | } |
| 85 | |
| 86 | return res; |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * p9mode2unixmode- convert plan9 mode bits to unix mode bits |
| 91 | * @v9ses: v9fs session information |
| 92 | * @mode: mode to convert |
| 93 | * |
| 94 | */ |
| 95 | |
| 96 | static int p9mode2unixmode(struct v9fs_session_info *v9ses, int mode) |
| 97 | { |
| 98 | int res; |
| 99 | |
| 100 | res = mode & 0777; |
| 101 | |
| 102 | if ((mode & P9_DMDIR) == P9_DMDIR) |
| 103 | res |= S_IFDIR; |
| 104 | else if ((mode & P9_DMSYMLINK) && (v9fs_extended(v9ses))) |
| 105 | res |= S_IFLNK; |
| 106 | else if ((mode & P9_DMSOCKET) && (v9fs_extended(v9ses)) |
| 107 | && (v9ses->nodev == 0)) |
| 108 | res |= S_IFSOCK; |
| 109 | else if ((mode & P9_DMNAMEDPIPE) && (v9fs_extended(v9ses)) |
| 110 | && (v9ses->nodev == 0)) |
| 111 | res |= S_IFIFO; |
| 112 | else if ((mode & P9_DMDEVICE) && (v9fs_extended(v9ses)) |
| 113 | && (v9ses->nodev == 0)) |
| 114 | res |= S_IFBLK; |
| 115 | else |
| 116 | res |= S_IFREG; |
| 117 | |
| 118 | if (v9fs_extended(v9ses)) { |
| 119 | if ((mode & P9_DMSETUID) == P9_DMSETUID) |
| 120 | res |= S_ISUID; |
| 121 | |
| 122 | if ((mode & P9_DMSETGID) == P9_DMSETGID) |
| 123 | res |= S_ISGID; |
| 124 | |
| 125 | if ((mode & P9_DMSETVTX) == P9_DMSETVTX) |
| 126 | res |= S_ISVTX; |
| 127 | } |
| 128 | |
| 129 | return res; |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * v9fs_uflags2omode- convert posix open flags to plan 9 mode bits |
| 134 | * @uflags: flags to convert |
| 135 | * |
| 136 | */ |
| 137 | |
| 138 | int v9fs_uflags2omode(int uflags) |
| 139 | { |
| 140 | int ret; |
| 141 | |
| 142 | ret = 0; |
| 143 | switch (uflags&3) { |
| 144 | default: |
| 145 | case O_RDONLY: |
| 146 | ret = P9_OREAD; |
| 147 | break; |
| 148 | |
| 149 | case O_WRONLY: |
| 150 | ret = P9_OWRITE; |
| 151 | break; |
| 152 | |
| 153 | case O_RDWR: |
| 154 | ret = P9_ORDWR; |
| 155 | break; |
| 156 | } |
| 157 | |
| 158 | if (uflags & O_EXCL) |
| 159 | ret |= P9_OEXCL; |
| 160 | |
| 161 | if (uflags & O_TRUNC) |
| 162 | ret |= P9_OTRUNC; |
| 163 | |
| 164 | if (uflags & O_APPEND) |
| 165 | ret |= P9_OAPPEND; |
| 166 | |
| 167 | return ret; |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * v9fs_blank_wstat - helper function to setup a 9P stat structure |
| 172 | * @v9ses: 9P session info (for determining extended mode) |
| 173 | * @wstat: structure to initialize |
| 174 | * |
| 175 | */ |
| 176 | |
| 177 | static void |
| 178 | v9fs_blank_wstat(struct p9_wstat *wstat) |
| 179 | { |
| 180 | wstat->type = ~0; |
| 181 | wstat->dev = ~0; |
| 182 | wstat->qid.type = ~0; |
| 183 | wstat->qid.version = ~0; |
| 184 | *((long long *)&wstat->qid.path) = ~0; |
| 185 | wstat->mode = ~0; |
| 186 | wstat->atime = ~0; |
| 187 | wstat->mtime = ~0; |
| 188 | wstat->length = ~0; |
| 189 | wstat->name = NULL; |
| 190 | wstat->uid = NULL; |
| 191 | wstat->gid = NULL; |
| 192 | wstat->muid = NULL; |
| 193 | wstat->n_uid = ~0; |
| 194 | wstat->n_gid = ~0; |
| 195 | wstat->n_muid = ~0; |
| 196 | wstat->extension = NULL; |
| 197 | } |
| 198 | |
| 199 | /** |
| 200 | * v9fs_get_inode - helper function to setup an inode |
| 201 | * @sb: superblock |
| 202 | * @mode: mode to setup inode with |
| 203 | * |
| 204 | */ |
| 205 | |
| 206 | struct inode *v9fs_get_inode(struct super_block *sb, int mode) |
| 207 | { |
| 208 | struct inode *inode; |
| 209 | struct v9fs_session_info *v9ses = sb->s_fs_info; |
| 210 | |
| 211 | P9_DPRINTK(P9_DEBUG_VFS, "super block: %p mode: %o\n", sb, mode); |
| 212 | |
| 213 | inode = new_inode(sb); |
| 214 | if (inode) { |
| 215 | inode->i_mode = mode; |
| 216 | inode->i_uid = current->fsuid; |
| 217 | inode->i_gid = current->fsgid; |
| 218 | inode->i_blocks = 0; |
| 219 | inode->i_rdev = 0; |
| 220 | inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
| 221 | inode->i_mapping->a_ops = &v9fs_addr_operations; |
| 222 | |
| 223 | switch (mode & S_IFMT) { |
| 224 | case S_IFIFO: |
| 225 | case S_IFBLK: |
| 226 | case S_IFCHR: |
| 227 | case S_IFSOCK: |
| 228 | if (!v9fs_extended(v9ses)) { |
| 229 | P9_DPRINTK(P9_DEBUG_ERROR, |
| 230 | "special files without extended mode\n"); |
| 231 | return ERR_PTR(-EINVAL); |
| 232 | } |
| 233 | init_special_inode(inode, inode->i_mode, |
| 234 | inode->i_rdev); |
| 235 | break; |
| 236 | case S_IFREG: |
| 237 | inode->i_op = &v9fs_file_inode_operations; |
| 238 | inode->i_fop = &v9fs_file_operations; |
| 239 | break; |
| 240 | case S_IFLNK: |
| 241 | if (!v9fs_extended(v9ses)) { |
| 242 | P9_DPRINTK(P9_DEBUG_ERROR, |
| 243 | "extended modes used w/o 9P2000.u\n"); |
| 244 | return ERR_PTR(-EINVAL); |
| 245 | } |
| 246 | inode->i_op = &v9fs_symlink_inode_operations; |
| 247 | break; |
| 248 | case S_IFDIR: |
| 249 | inc_nlink(inode); |
| 250 | if (v9fs_extended(v9ses)) |
| 251 | inode->i_op = &v9fs_dir_inode_operations_ext; |
| 252 | else |
| 253 | inode->i_op = &v9fs_dir_inode_operations; |
| 254 | inode->i_fop = &v9fs_dir_operations; |
| 255 | break; |
| 256 | default: |
| 257 | P9_DPRINTK(P9_DEBUG_ERROR, |
| 258 | "BAD mode 0x%x S_IFMT 0x%x\n", |
| 259 | mode, mode & S_IFMT); |
| 260 | return ERR_PTR(-EINVAL); |
| 261 | } |
| 262 | } else { |
| 263 | P9_EPRINTK(KERN_WARNING, "Problem allocating inode\n"); |
| 264 | return ERR_PTR(-ENOMEM); |
| 265 | } |
| 266 | return inode; |
| 267 | } |
| 268 | |
| 269 | /* |
| 270 | static struct v9fs_fid* |
| 271 | v9fs_clone_walk(struct v9fs_session_info *v9ses, u32 fid, struct dentry *dentry) |
| 272 | { |
| 273 | int err; |
| 274 | int nfid; |
| 275 | struct v9fs_fid *ret; |
| 276 | struct v9fs_fcall *fcall; |
| 277 | |
| 278 | nfid = v9fs_get_idpool(&v9ses->fidpool); |
| 279 | if (nfid < 0) { |
| 280 | eprintk(KERN_WARNING, "no free fids available\n"); |
| 281 | return ERR_PTR(-ENOSPC); |
| 282 | } |
| 283 | |
| 284 | err = v9fs_t_walk(v9ses, fid, nfid, (char *) dentry->d_name.name, |
| 285 | &fcall); |
| 286 | |
| 287 | if (err < 0) { |
| 288 | if (fcall && fcall->id == RWALK) |
| 289 | goto clunk_fid; |
| 290 | |
| 291 | PRINT_FCALL_ERROR("walk error", fcall); |
| 292 | v9fs_put_idpool(nfid, &v9ses->fidpool); |
| 293 | goto error; |
| 294 | } |
| 295 | |
| 296 | kfree(fcall); |
| 297 | fcall = NULL; |
| 298 | ret = v9fs_fid_create(v9ses, nfid); |
| 299 | if (!ret) { |
| 300 | err = -ENOMEM; |
| 301 | goto clunk_fid; |
| 302 | } |
| 303 | |
| 304 | err = v9fs_fid_insert(ret, dentry); |
| 305 | if (err < 0) { |
| 306 | v9fs_fid_destroy(ret); |
| 307 | goto clunk_fid; |
| 308 | } |
| 309 | |
| 310 | return ret; |
| 311 | |
| 312 | clunk_fid: |
| 313 | v9fs_t_clunk(v9ses, nfid); |
| 314 | |
| 315 | error: |
| 316 | kfree(fcall); |
| 317 | return ERR_PTR(err); |
| 318 | } |
| 319 | */ |
| 320 | |
| 321 | /** |
| 322 | * v9fs_inode_from_fid - populate an inode by issuing a attribute request |
| 323 | * @v9ses: session information |
| 324 | * @fid: fid to issue attribute request for |
| 325 | * @sb: superblock on which to create inode |
| 326 | * |
| 327 | */ |
| 328 | |
| 329 | static struct inode * |
| 330 | v9fs_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid, |
| 331 | struct super_block *sb) |
| 332 | { |
| 333 | int err, umode; |
| 334 | struct inode *ret; |
| 335 | struct p9_stat *st; |
| 336 | |
| 337 | ret = NULL; |
| 338 | st = p9_client_stat(fid); |
| 339 | if (IS_ERR(st)) { |
| 340 | err = PTR_ERR(st); |
| 341 | st = NULL; |
| 342 | goto error; |
| 343 | } |
| 344 | |
| 345 | umode = p9mode2unixmode(v9ses, st->mode); |
| 346 | ret = v9fs_get_inode(sb, umode); |
| 347 | if (IS_ERR(ret)) { |
| 348 | err = PTR_ERR(ret); |
| 349 | ret = NULL; |
| 350 | goto error; |
| 351 | } |
| 352 | |
| 353 | v9fs_stat2inode(st, ret, sb); |
| 354 | ret->i_ino = v9fs_qid2ino(&st->qid); |
| 355 | kfree(st); |
| 356 | return ret; |
| 357 | |
| 358 | error: |
| 359 | kfree(st); |
| 360 | if (ret) |
| 361 | iput(ret); |
| 362 | |
| 363 | return ERR_PTR(err); |
| 364 | } |
| 365 | |
| 366 | /** |
| 367 | * v9fs_remove - helper function to remove files and directories |
| 368 | * @dir: directory inode that is being deleted |
| 369 | * @file: dentry that is being deleted |
| 370 | * @rmdir: removing a directory |
| 371 | * |
| 372 | */ |
| 373 | |
| 374 | static int v9fs_remove(struct inode *dir, struct dentry *file, int rmdir) |
| 375 | { |
| 376 | struct inode *file_inode; |
| 377 | struct v9fs_session_info *v9ses; |
| 378 | struct p9_fid *v9fid; |
| 379 | |
| 380 | P9_DPRINTK(P9_DEBUG_VFS, "inode: %p dentry: %p rmdir: %d\n", dir, file, |
| 381 | rmdir); |
| 382 | |
| 383 | file_inode = file->d_inode; |
| 384 | v9ses = v9fs_inode2v9ses(file_inode); |
| 385 | v9fid = v9fs_fid_clone(file); |
| 386 | if (IS_ERR(v9fid)) |
| 387 | return PTR_ERR(v9fid); |
| 388 | |
| 389 | return p9_client_remove(v9fid); |
| 390 | } |
| 391 | |
| 392 | static int |
| 393 | v9fs_open_created(struct inode *inode, struct file *file) |
| 394 | { |
| 395 | return 0; |
| 396 | } |
| 397 | |
| 398 | |
| 399 | /** |
| 400 | * v9fs_create - Create a file |
| 401 | * @v9ses: session information |
| 402 | * @dir: directory that dentry is being created in |
| 403 | * @dentry: dentry that is being created |
| 404 | * @perm: create permissions |
| 405 | * @mode: open mode |
| 406 | * @extension: 9p2000.u extension string to support devices, etc. |
| 407 | * |
| 408 | */ |
| 409 | static struct p9_fid * |
| 410 | v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir, |
| 411 | struct dentry *dentry, char *extension, u32 perm, u8 mode) |
| 412 | { |
| 413 | int err; |
| 414 | char *name; |
| 415 | struct p9_fid *dfid, *ofid, *fid; |
| 416 | struct inode *inode; |
| 417 | |
| 418 | err = 0; |
| 419 | ofid = NULL; |
| 420 | fid = NULL; |
| 421 | name = (char *) dentry->d_name.name; |
| 422 | dfid = v9fs_fid_clone(dentry->d_parent); |
| 423 | if (IS_ERR(dfid)) { |
| 424 | err = PTR_ERR(dfid); |
| 425 | dfid = NULL; |
| 426 | goto error; |
| 427 | } |
| 428 | |
| 429 | /* clone a fid to use for creation */ |
| 430 | ofid = p9_client_walk(dfid, 0, NULL, 1); |
| 431 | if (IS_ERR(ofid)) { |
| 432 | err = PTR_ERR(ofid); |
| 433 | ofid = NULL; |
| 434 | goto error; |
| 435 | } |
| 436 | |
| 437 | err = p9_client_fcreate(ofid, name, perm, mode, extension); |
| 438 | if (err < 0) |
| 439 | goto error; |
| 440 | |
| 441 | /* now walk from the parent so we can get unopened fid */ |
| 442 | fid = p9_client_walk(dfid, 1, &name, 0); |
| 443 | if (IS_ERR(fid)) { |
| 444 | err = PTR_ERR(fid); |
| 445 | fid = NULL; |
| 446 | goto error; |
| 447 | } else |
| 448 | dfid = NULL; |
| 449 | |
| 450 | /* instantiate inode and assign the unopened fid to the dentry */ |
| 451 | inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); |
| 452 | if (IS_ERR(inode)) { |
| 453 | err = PTR_ERR(inode); |
| 454 | goto error; |
| 455 | } |
| 456 | |
| 457 | if (v9ses->cache) |
| 458 | dentry->d_op = &v9fs_cached_dentry_operations; |
| 459 | else |
| 460 | dentry->d_op = &v9fs_dentry_operations; |
| 461 | |
| 462 | d_instantiate(dentry, inode); |
| 463 | v9fs_fid_add(dentry, fid); |
| 464 | return ofid; |
| 465 | |
| 466 | error: |
| 467 | if (dfid) |
| 468 | p9_client_clunk(dfid); |
| 469 | |
| 470 | if (ofid) |
| 471 | p9_client_clunk(ofid); |
| 472 | |
| 473 | if (fid) |
| 474 | p9_client_clunk(fid); |
| 475 | |
| 476 | return ERR_PTR(err); |
| 477 | } |
| 478 | |
| 479 | /** |
| 480 | * v9fs_vfs_create - VFS hook to create files |
| 481 | * @dir: directory inode that is being created |
| 482 | * @dentry: dentry that is being deleted |
| 483 | * @mode: create permissions |
| 484 | * @nd: path information |
| 485 | * |
| 486 | */ |
| 487 | |
| 488 | static int |
| 489 | v9fs_vfs_create(struct inode *dir, struct dentry *dentry, int mode, |
| 490 | struct nameidata *nd) |
| 491 | { |
| 492 | int err; |
| 493 | u32 perm; |
| 494 | int flags; |
| 495 | struct v9fs_session_info *v9ses; |
| 496 | struct p9_fid *fid; |
| 497 | struct file *filp; |
| 498 | |
| 499 | err = 0; |
| 500 | fid = NULL; |
| 501 | v9ses = v9fs_inode2v9ses(dir); |
| 502 | perm = unixmode2p9mode(v9ses, mode); |
| 503 | if (nd && nd->flags & LOOKUP_OPEN) |
| 504 | flags = nd->intent.open.flags - 1; |
| 505 | else |
| 506 | flags = O_RDWR; |
| 507 | |
| 508 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, |
| 509 | v9fs_uflags2omode(flags)); |
| 510 | if (IS_ERR(fid)) { |
| 511 | err = PTR_ERR(fid); |
| 512 | fid = NULL; |
| 513 | goto error; |
| 514 | } |
| 515 | |
| 516 | /* if we are opening a file, assign the open fid to the file */ |
| 517 | if (nd && nd->flags & LOOKUP_OPEN) { |
| 518 | filp = lookup_instantiate_filp(nd, dentry, v9fs_open_created); |
| 519 | if (IS_ERR(filp)) { |
| 520 | err = PTR_ERR(filp); |
| 521 | goto error; |
| 522 | } |
| 523 | |
| 524 | filp->private_data = fid; |
| 525 | } else |
| 526 | p9_client_clunk(fid); |
| 527 | |
| 528 | return 0; |
| 529 | |
| 530 | error: |
| 531 | if (fid) |
| 532 | p9_client_clunk(fid); |
| 533 | |
| 534 | return err; |
| 535 | } |
| 536 | |
| 537 | /** |
| 538 | * v9fs_vfs_mkdir - VFS mkdir hook to create a directory |
| 539 | * @dir: inode that is being unlinked |
| 540 | * @dentry: dentry that is being unlinked |
| 541 | * @mode: mode for new directory |
| 542 | * |
| 543 | */ |
| 544 | |
| 545 | static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) |
| 546 | { |
| 547 | int err; |
| 548 | u32 perm; |
| 549 | struct v9fs_session_info *v9ses; |
| 550 | struct p9_fid *fid; |
| 551 | |
| 552 | P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); |
| 553 | err = 0; |
| 554 | v9ses = v9fs_inode2v9ses(dir); |
| 555 | perm = unixmode2p9mode(v9ses, mode | S_IFDIR); |
| 556 | fid = v9fs_create(v9ses, dir, dentry, NULL, perm, P9_OREAD); |
| 557 | if (IS_ERR(fid)) { |
| 558 | err = PTR_ERR(fid); |
| 559 | fid = NULL; |
| 560 | } |
| 561 | |
| 562 | if (fid) |
| 563 | p9_client_clunk(fid); |
| 564 | |
| 565 | return err; |
| 566 | } |
| 567 | |
| 568 | /** |
| 569 | * v9fs_vfs_lookup - VFS lookup hook to "walk" to a new inode |
| 570 | * @dir: inode that is being walked from |
| 571 | * @dentry: dentry that is being walked to? |
| 572 | * @nameidata: path data |
| 573 | * |
| 574 | */ |
| 575 | |
| 576 | static struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry, |
| 577 | struct nameidata *nameidata) |
| 578 | { |
| 579 | struct super_block *sb; |
| 580 | struct v9fs_session_info *v9ses; |
| 581 | struct p9_fid *dfid, *fid; |
| 582 | struct inode *inode; |
| 583 | char *name; |
| 584 | int result = 0; |
| 585 | |
| 586 | P9_DPRINTK(P9_DEBUG_VFS, "dir: %p dentry: (%s) %p nameidata: %p\n", |
| 587 | dir, dentry->d_name.name, dentry, nameidata); |
| 588 | |
| 589 | sb = dir->i_sb; |
| 590 | v9ses = v9fs_inode2v9ses(dir); |
| 591 | dfid = v9fs_fid_lookup(dentry->d_parent); |
| 592 | if (IS_ERR(dfid)) |
| 593 | return ERR_CAST(dfid); |
| 594 | |
| 595 | name = (char *) dentry->d_name.name; |
| 596 | fid = p9_client_walk(dfid, 1, &name, 1); |
| 597 | if (IS_ERR(fid)) { |
| 598 | result = PTR_ERR(fid); |
| 599 | if (result == -ENOENT) { |
| 600 | d_add(dentry, NULL); |
| 601 | return NULL; |
| 602 | } |
| 603 | |
| 604 | return ERR_PTR(result); |
| 605 | } |
| 606 | |
| 607 | inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); |
| 608 | if (IS_ERR(inode)) { |
| 609 | result = PTR_ERR(inode); |
| 610 | inode = NULL; |
| 611 | goto error; |
| 612 | } |
| 613 | |
| 614 | result = v9fs_fid_add(dentry, fid); |
| 615 | if (result < 0) |
| 616 | goto error; |
| 617 | |
| 618 | if ((fid->qid.version) && (v9ses->cache)) |
| 619 | dentry->d_op = &v9fs_cached_dentry_operations; |
| 620 | else |
| 621 | dentry->d_op = &v9fs_dentry_operations; |
| 622 | |
| 623 | d_add(dentry, inode); |
| 624 | return NULL; |
| 625 | |
| 626 | error: |
| 627 | if (fid) |
| 628 | p9_client_clunk(fid); |
| 629 | |
| 630 | return ERR_PTR(result); |
| 631 | } |
| 632 | |
| 633 | /** |
| 634 | * v9fs_vfs_unlink - VFS unlink hook to delete an inode |
| 635 | * @i: inode that is being unlinked |
| 636 | * @d: dentry that is being unlinked |
| 637 | * |
| 638 | */ |
| 639 | |
| 640 | static int v9fs_vfs_unlink(struct inode *i, struct dentry *d) |
| 641 | { |
| 642 | return v9fs_remove(i, d, 0); |
| 643 | } |
| 644 | |
| 645 | /** |
| 646 | * v9fs_vfs_rmdir - VFS unlink hook to delete a directory |
| 647 | * @i: inode that is being unlinked |
| 648 | * @d: dentry that is being unlinked |
| 649 | * |
| 650 | */ |
| 651 | |
| 652 | static int v9fs_vfs_rmdir(struct inode *i, struct dentry *d) |
| 653 | { |
| 654 | return v9fs_remove(i, d, 1); |
| 655 | } |
| 656 | |
| 657 | /** |
| 658 | * v9fs_vfs_rename - VFS hook to rename an inode |
| 659 | * @old_dir: old dir inode |
| 660 | * @old_dentry: old dentry |
| 661 | * @new_dir: new dir inode |
| 662 | * @new_dentry: new dentry |
| 663 | * |
| 664 | */ |
| 665 | |
| 666 | static int |
| 667 | v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry, |
| 668 | struct inode *new_dir, struct dentry *new_dentry) |
| 669 | { |
| 670 | struct inode *old_inode; |
| 671 | struct v9fs_session_info *v9ses; |
| 672 | struct p9_fid *oldfid; |
| 673 | struct p9_fid *olddirfid; |
| 674 | struct p9_fid *newdirfid; |
| 675 | struct p9_wstat wstat; |
| 676 | int retval; |
| 677 | |
| 678 | P9_DPRINTK(P9_DEBUG_VFS, "\n"); |
| 679 | retval = 0; |
| 680 | old_inode = old_dentry->d_inode; |
| 681 | v9ses = v9fs_inode2v9ses(old_inode); |
| 682 | oldfid = v9fs_fid_lookup(old_dentry); |
| 683 | if (IS_ERR(oldfid)) |
| 684 | return PTR_ERR(oldfid); |
| 685 | |
| 686 | olddirfid = v9fs_fid_clone(old_dentry->d_parent); |
| 687 | if (IS_ERR(olddirfid)) { |
| 688 | retval = PTR_ERR(olddirfid); |
| 689 | goto done; |
| 690 | } |
| 691 | |
| 692 | newdirfid = v9fs_fid_clone(new_dentry->d_parent); |
| 693 | if (IS_ERR(newdirfid)) { |
| 694 | retval = PTR_ERR(newdirfid); |
| 695 | goto clunk_olddir; |
| 696 | } |
| 697 | |
| 698 | /* 9P can only handle file rename in the same directory */ |
| 699 | if (memcmp(&olddirfid->qid, &newdirfid->qid, sizeof(newdirfid->qid))) { |
| 700 | P9_DPRINTK(P9_DEBUG_ERROR, |
| 701 | "old dir and new dir are different\n"); |
| 702 | retval = -EXDEV; |
| 703 | goto clunk_newdir; |
| 704 | } |
| 705 | |
| 706 | v9fs_blank_wstat(&wstat); |
| 707 | wstat.muid = v9ses->uname; |
| 708 | wstat.name = (char *) new_dentry->d_name.name; |
| 709 | retval = p9_client_wstat(oldfid, &wstat); |
| 710 | |
| 711 | clunk_newdir: |
| 712 | p9_client_clunk(newdirfid); |
| 713 | |
| 714 | clunk_olddir: |
| 715 | p9_client_clunk(olddirfid); |
| 716 | |
| 717 | done: |
| 718 | return retval; |
| 719 | } |
| 720 | |
| 721 | /** |
| 722 | * v9fs_vfs_getattr - retrieve file metadata |
| 723 | * @mnt: mount information |
| 724 | * @dentry: file to get attributes on |
| 725 | * @stat: metadata structure to populate |
| 726 | * |
| 727 | */ |
| 728 | |
| 729 | static int |
| 730 | v9fs_vfs_getattr(struct vfsmount *mnt, struct dentry *dentry, |
| 731 | struct kstat *stat) |
| 732 | { |
| 733 | int err; |
| 734 | struct v9fs_session_info *v9ses; |
| 735 | struct p9_fid *fid; |
| 736 | struct p9_stat *st; |
| 737 | |
| 738 | P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry); |
| 739 | err = -EPERM; |
| 740 | v9ses = v9fs_inode2v9ses(dentry->d_inode); |
| 741 | if (v9ses->cache == CACHE_LOOSE) |
| 742 | return simple_getattr(mnt, dentry, stat); |
| 743 | |
| 744 | fid = v9fs_fid_lookup(dentry); |
| 745 | if (IS_ERR(fid)) |
| 746 | return PTR_ERR(fid); |
| 747 | |
| 748 | st = p9_client_stat(fid); |
| 749 | if (IS_ERR(st)) |
| 750 | return PTR_ERR(st); |
| 751 | |
| 752 | v9fs_stat2inode(st, dentry->d_inode, dentry->d_inode->i_sb); |
| 753 | generic_fillattr(dentry->d_inode, stat); |
| 754 | |
| 755 | kfree(st); |
| 756 | return 0; |
| 757 | } |
| 758 | |
| 759 | /** |
| 760 | * v9fs_vfs_setattr - set file metadata |
| 761 | * @dentry: file whose metadata to set |
| 762 | * @iattr: metadata assignment structure |
| 763 | * |
| 764 | */ |
| 765 | |
| 766 | static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr) |
| 767 | { |
| 768 | int retval; |
| 769 | struct v9fs_session_info *v9ses; |
| 770 | struct p9_fid *fid; |
| 771 | struct p9_wstat wstat; |
| 772 | |
| 773 | P9_DPRINTK(P9_DEBUG_VFS, "\n"); |
| 774 | retval = -EPERM; |
| 775 | v9ses = v9fs_inode2v9ses(dentry->d_inode); |
| 776 | fid = v9fs_fid_lookup(dentry); |
| 777 | if(IS_ERR(fid)) |
| 778 | return PTR_ERR(fid); |
| 779 | |
| 780 | v9fs_blank_wstat(&wstat); |
| 781 | if (iattr->ia_valid & ATTR_MODE) |
| 782 | wstat.mode = unixmode2p9mode(v9ses, iattr->ia_mode); |
| 783 | |
| 784 | if (iattr->ia_valid & ATTR_MTIME) |
| 785 | wstat.mtime = iattr->ia_mtime.tv_sec; |
| 786 | |
| 787 | if (iattr->ia_valid & ATTR_ATIME) |
| 788 | wstat.atime = iattr->ia_atime.tv_sec; |
| 789 | |
| 790 | if (iattr->ia_valid & ATTR_SIZE) |
| 791 | wstat.length = iattr->ia_size; |
| 792 | |
| 793 | if (v9fs_extended(v9ses)) { |
| 794 | if (iattr->ia_valid & ATTR_UID) |
| 795 | wstat.n_uid = iattr->ia_uid; |
| 796 | |
| 797 | if (iattr->ia_valid & ATTR_GID) |
| 798 | wstat.n_gid = iattr->ia_gid; |
| 799 | } |
| 800 | |
| 801 | retval = p9_client_wstat(fid, &wstat); |
| 802 | if (retval >= 0) |
| 803 | retval = inode_setattr(dentry->d_inode, iattr); |
| 804 | |
| 805 | return retval; |
| 806 | } |
| 807 | |
| 808 | /** |
| 809 | * v9fs_stat2inode - populate an inode structure with mistat info |
| 810 | * @stat: Plan 9 metadata (mistat) structure |
| 811 | * @inode: inode to populate |
| 812 | * @sb: superblock of filesystem |
| 813 | * |
| 814 | */ |
| 815 | |
| 816 | void |
| 817 | v9fs_stat2inode(struct p9_stat *stat, struct inode *inode, |
| 818 | struct super_block *sb) |
| 819 | { |
| 820 | int n; |
| 821 | char ext[32]; |
| 822 | struct v9fs_session_info *v9ses = sb->s_fs_info; |
| 823 | |
| 824 | inode->i_nlink = 1; |
| 825 | |
| 826 | inode->i_atime.tv_sec = stat->atime; |
| 827 | inode->i_mtime.tv_sec = stat->mtime; |
| 828 | inode->i_ctime.tv_sec = stat->mtime; |
| 829 | |
| 830 | inode->i_uid = v9ses->dfltuid; |
| 831 | inode->i_gid = v9ses->dfltgid; |
| 832 | |
| 833 | if (v9fs_extended(v9ses)) { |
| 834 | inode->i_uid = stat->n_uid; |
| 835 | inode->i_gid = stat->n_gid; |
| 836 | } |
| 837 | |
| 838 | inode->i_mode = p9mode2unixmode(v9ses, stat->mode); |
| 839 | if ((S_ISBLK(inode->i_mode)) || (S_ISCHR(inode->i_mode))) { |
| 840 | char type = 0; |
| 841 | int major = -1; |
| 842 | int minor = -1; |
| 843 | |
| 844 | n = stat->extension.len; |
| 845 | if (n > sizeof(ext)-1) |
| 846 | n = sizeof(ext)-1; |
| 847 | memmove(ext, stat->extension.str, n); |
| 848 | ext[n] = 0; |
| 849 | sscanf(ext, "%c %u %u", &type, &major, &minor); |
| 850 | switch (type) { |
| 851 | case 'c': |
| 852 | inode->i_mode &= ~S_IFBLK; |
| 853 | inode->i_mode |= S_IFCHR; |
| 854 | break; |
| 855 | case 'b': |
| 856 | break; |
| 857 | default: |
| 858 | P9_DPRINTK(P9_DEBUG_ERROR, |
| 859 | "Unknown special type %c (%.*s)\n", type, |
| 860 | stat->extension.len, stat->extension.str); |
| 861 | }; |
| 862 | inode->i_rdev = MKDEV(major, minor); |
| 863 | } else |
| 864 | inode->i_rdev = 0; |
| 865 | |
| 866 | inode->i_size = stat->length; |
| 867 | |
| 868 | /* not real number of blocks, but 512 byte ones ... */ |
| 869 | inode->i_blocks = (inode->i_size + 512 - 1) >> 9; |
| 870 | } |
| 871 | |
| 872 | /** |
| 873 | * v9fs_qid2ino - convert qid into inode number |
| 874 | * @qid: qid to hash |
| 875 | * |
| 876 | * BUG: potential for inode number collisions? |
| 877 | */ |
| 878 | |
| 879 | ino_t v9fs_qid2ino(struct p9_qid *qid) |
| 880 | { |
| 881 | u64 path = qid->path + 2; |
| 882 | ino_t i = 0; |
| 883 | |
| 884 | if (sizeof(ino_t) == sizeof(path)) |
| 885 | memcpy(&i, &path, sizeof(ino_t)); |
| 886 | else |
| 887 | i = (ino_t) (path ^ (path >> 32)); |
| 888 | |
| 889 | return i; |
| 890 | } |
| 891 | |
| 892 | /** |
| 893 | * v9fs_readlink - read a symlink's location (internal version) |
| 894 | * @dentry: dentry for symlink |
| 895 | * @buffer: buffer to load symlink location into |
| 896 | * @buflen: length of buffer |
| 897 | * |
| 898 | */ |
| 899 | |
| 900 | static int v9fs_readlink(struct dentry *dentry, char *buffer, int buflen) |
| 901 | { |
| 902 | int retval; |
| 903 | |
| 904 | struct v9fs_session_info *v9ses; |
| 905 | struct p9_fid *fid; |
| 906 | struct p9_stat *st; |
| 907 | |
| 908 | P9_DPRINTK(P9_DEBUG_VFS, " %s\n", dentry->d_name.name); |
| 909 | retval = -EPERM; |
| 910 | v9ses = v9fs_inode2v9ses(dentry->d_inode); |
| 911 | fid = v9fs_fid_lookup(dentry); |
| 912 | if (IS_ERR(fid)) |
| 913 | return PTR_ERR(fid); |
| 914 | |
| 915 | if (!v9fs_extended(v9ses)) |
| 916 | return -EBADF; |
| 917 | |
| 918 | st = p9_client_stat(fid); |
| 919 | if (IS_ERR(st)) |
| 920 | return PTR_ERR(st); |
| 921 | |
| 922 | if (!(st->mode & P9_DMSYMLINK)) { |
| 923 | retval = -EINVAL; |
| 924 | goto done; |
| 925 | } |
| 926 | |
| 927 | /* copy extension buffer into buffer */ |
| 928 | if (st->extension.len < buflen) |
| 929 | buflen = st->extension.len + 1; |
| 930 | |
| 931 | memmove(buffer, st->extension.str, buflen - 1); |
| 932 | buffer[buflen-1] = 0; |
| 933 | |
| 934 | P9_DPRINTK(P9_DEBUG_VFS, |
| 935 | "%s -> %.*s (%s)\n", dentry->d_name.name, st->extension.len, |
| 936 | st->extension.str, buffer); |
| 937 | |
| 938 | retval = buflen; |
| 939 | |
| 940 | done: |
| 941 | kfree(st); |
| 942 | return retval; |
| 943 | } |
| 944 | |
| 945 | /** |
| 946 | * v9fs_vfs_readlink - read a symlink's location |
| 947 | * @dentry: dentry for symlink |
| 948 | * @buffer: buffer to load symlink location into |
| 949 | * @buflen: length of buffer |
| 950 | * |
| 951 | */ |
| 952 | |
| 953 | static int v9fs_vfs_readlink(struct dentry *dentry, char __user * buffer, |
| 954 | int buflen) |
| 955 | { |
| 956 | int retval; |
| 957 | int ret; |
| 958 | char *link = __getname(); |
| 959 | |
| 960 | if (unlikely(!link)) |
| 961 | return -ENOMEM; |
| 962 | |
| 963 | if (buflen > PATH_MAX) |
| 964 | buflen = PATH_MAX; |
| 965 | |
| 966 | P9_DPRINTK(P9_DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_iname, dentry); |
| 967 | |
| 968 | retval = v9fs_readlink(dentry, link, buflen); |
| 969 | |
| 970 | if (retval > 0) { |
| 971 | if ((ret = copy_to_user(buffer, link, retval)) != 0) { |
| 972 | P9_DPRINTK(P9_DEBUG_ERROR, |
| 973 | "problem copying to user: %d\n", ret); |
| 974 | retval = ret; |
| 975 | } |
| 976 | } |
| 977 | |
| 978 | __putname(link); |
| 979 | return retval; |
| 980 | } |
| 981 | |
| 982 | /** |
| 983 | * v9fs_vfs_follow_link - follow a symlink path |
| 984 | * @dentry: dentry for symlink |
| 985 | * @nd: nameidata |
| 986 | * |
| 987 | */ |
| 988 | |
| 989 | static void *v9fs_vfs_follow_link(struct dentry *dentry, struct nameidata *nd) |
| 990 | { |
| 991 | int len = 0; |
| 992 | char *link = __getname(); |
| 993 | |
| 994 | P9_DPRINTK(P9_DEBUG_VFS, "%s n", dentry->d_name.name); |
| 995 | |
| 996 | if (!link) |
| 997 | link = ERR_PTR(-ENOMEM); |
| 998 | else { |
| 999 | len = v9fs_readlink(dentry, link, PATH_MAX); |
| 1000 | |
| 1001 | if (len < 0) { |
| 1002 | __putname(link); |
| 1003 | link = ERR_PTR(len); |
| 1004 | } else |
| 1005 | link[len] = 0; |
| 1006 | } |
| 1007 | nd_set_link(nd, link); |
| 1008 | |
| 1009 | return NULL; |
| 1010 | } |
| 1011 | |
| 1012 | /** |
| 1013 | * v9fs_vfs_put_link - release a symlink path |
| 1014 | * @dentry: dentry for symlink |
| 1015 | * @nd: nameidata |
| 1016 | * @p: unused |
| 1017 | * |
| 1018 | */ |
| 1019 | |
| 1020 | static void |
| 1021 | v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd, void *p) |
| 1022 | { |
| 1023 | char *s = nd_get_link(nd); |
| 1024 | |
| 1025 | P9_DPRINTK(P9_DEBUG_VFS, " %s %s\n", dentry->d_name.name, s); |
| 1026 | if (!IS_ERR(s)) |
| 1027 | __putname(s); |
| 1028 | } |
| 1029 | |
| 1030 | /** |
| 1031 | * v9fs_vfs_mkspecial - create a special file |
| 1032 | * @dir: inode to create special file in |
| 1033 | * @dentry: dentry to create |
| 1034 | * @mode: mode to create special file |
| 1035 | * @extension: 9p2000.u format extension string representing special file |
| 1036 | * |
| 1037 | */ |
| 1038 | |
| 1039 | static int v9fs_vfs_mkspecial(struct inode *dir, struct dentry *dentry, |
| 1040 | int mode, const char *extension) |
| 1041 | { |
| 1042 | u32 perm; |
| 1043 | struct v9fs_session_info *v9ses; |
| 1044 | struct p9_fid *fid; |
| 1045 | |
| 1046 | v9ses = v9fs_inode2v9ses(dir); |
| 1047 | if (!v9fs_extended(v9ses)) { |
| 1048 | P9_DPRINTK(P9_DEBUG_ERROR, "not extended\n"); |
| 1049 | return -EPERM; |
| 1050 | } |
| 1051 | |
| 1052 | perm = unixmode2p9mode(v9ses, mode); |
| 1053 | fid = v9fs_create(v9ses, dir, dentry, (char *) extension, perm, |
| 1054 | P9_OREAD); |
| 1055 | if (IS_ERR(fid)) |
| 1056 | return PTR_ERR(fid); |
| 1057 | |
| 1058 | p9_client_clunk(fid); |
| 1059 | return 0; |
| 1060 | } |
| 1061 | |
| 1062 | /** |
| 1063 | * v9fs_vfs_symlink - helper function to create symlinks |
| 1064 | * @dir: directory inode containing symlink |
| 1065 | * @dentry: dentry for symlink |
| 1066 | * @symname: symlink data |
| 1067 | * |
| 1068 | * See Also: 9P2000.u RFC for more information |
| 1069 | * |
| 1070 | */ |
| 1071 | |
| 1072 | static int |
| 1073 | v9fs_vfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) |
| 1074 | { |
| 1075 | P9_DPRINTK(P9_DEBUG_VFS, " %lu,%s,%s\n", dir->i_ino, |
| 1076 | dentry->d_name.name, symname); |
| 1077 | |
| 1078 | return v9fs_vfs_mkspecial(dir, dentry, S_IFLNK, symname); |
| 1079 | } |
| 1080 | |
| 1081 | /** |
| 1082 | * v9fs_vfs_link - create a hardlink |
| 1083 | * @old_dentry: dentry for file to link to |
| 1084 | * @dir: inode destination for new link |
| 1085 | * @dentry: dentry for link |
| 1086 | * |
| 1087 | */ |
| 1088 | |
| 1089 | static int |
| 1090 | v9fs_vfs_link(struct dentry *old_dentry, struct inode *dir, |
| 1091 | struct dentry *dentry) |
| 1092 | { |
| 1093 | int retval; |
| 1094 | struct p9_fid *oldfid; |
| 1095 | char *name; |
| 1096 | |
| 1097 | P9_DPRINTK(P9_DEBUG_VFS, |
| 1098 | " %lu,%s,%s\n", dir->i_ino, dentry->d_name.name, |
| 1099 | old_dentry->d_name.name); |
| 1100 | |
| 1101 | oldfid = v9fs_fid_clone(old_dentry); |
| 1102 | if (IS_ERR(oldfid)) |
| 1103 | return PTR_ERR(oldfid); |
| 1104 | |
| 1105 | name = __getname(); |
| 1106 | if (unlikely(!name)) { |
| 1107 | retval = -ENOMEM; |
| 1108 | goto clunk_fid; |
| 1109 | } |
| 1110 | |
| 1111 | sprintf(name, "%d\n", oldfid->fid); |
| 1112 | retval = v9fs_vfs_mkspecial(dir, dentry, P9_DMLINK, name); |
| 1113 | __putname(name); |
| 1114 | |
| 1115 | clunk_fid: |
| 1116 | p9_client_clunk(oldfid); |
| 1117 | return retval; |
| 1118 | } |
| 1119 | |
| 1120 | /** |
| 1121 | * v9fs_vfs_mknod - create a special file |
| 1122 | * @dir: inode destination for new link |
| 1123 | * @dentry: dentry for file |
| 1124 | * @mode: mode for creation |
| 1125 | * @rdev: device associated with special file |
| 1126 | * |
| 1127 | */ |
| 1128 | |
| 1129 | static int |
| 1130 | v9fs_vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev) |
| 1131 | { |
| 1132 | int retval; |
| 1133 | char *name; |
| 1134 | |
| 1135 | P9_DPRINTK(P9_DEBUG_VFS, |
| 1136 | " %lu,%s mode: %x MAJOR: %u MINOR: %u\n", dir->i_ino, |
| 1137 | dentry->d_name.name, mode, MAJOR(rdev), MINOR(rdev)); |
| 1138 | |
| 1139 | if (!new_valid_dev(rdev)) |
| 1140 | return -EINVAL; |
| 1141 | |
| 1142 | name = __getname(); |
| 1143 | if (!name) |
| 1144 | return -ENOMEM; |
| 1145 | /* build extension */ |
| 1146 | if (S_ISBLK(mode)) |
| 1147 | sprintf(name, "b %u %u", MAJOR(rdev), MINOR(rdev)); |
| 1148 | else if (S_ISCHR(mode)) |
| 1149 | sprintf(name, "c %u %u", MAJOR(rdev), MINOR(rdev)); |
| 1150 | else if (S_ISFIFO(mode)) |
| 1151 | *name = 0; |
| 1152 | else { |
| 1153 | __putname(name); |
| 1154 | return -EINVAL; |
| 1155 | } |
| 1156 | |
| 1157 | retval = v9fs_vfs_mkspecial(dir, dentry, mode, name); |
| 1158 | __putname(name); |
| 1159 | |
| 1160 | return retval; |
| 1161 | } |
| 1162 | |
| 1163 | static const struct inode_operations v9fs_dir_inode_operations_ext = { |
| 1164 | .create = v9fs_vfs_create, |
| 1165 | .lookup = v9fs_vfs_lookup, |
| 1166 | .symlink = v9fs_vfs_symlink, |
| 1167 | .link = v9fs_vfs_link, |
| 1168 | .unlink = v9fs_vfs_unlink, |
| 1169 | .mkdir = v9fs_vfs_mkdir, |
| 1170 | .rmdir = v9fs_vfs_rmdir, |
| 1171 | .mknod = v9fs_vfs_mknod, |
| 1172 | .rename = v9fs_vfs_rename, |
| 1173 | .readlink = v9fs_vfs_readlink, |
| 1174 | .getattr = v9fs_vfs_getattr, |
| 1175 | .setattr = v9fs_vfs_setattr, |
| 1176 | }; |
| 1177 | |
| 1178 | static const struct inode_operations v9fs_dir_inode_operations = { |
| 1179 | .create = v9fs_vfs_create, |
| 1180 | .lookup = v9fs_vfs_lookup, |
| 1181 | .unlink = v9fs_vfs_unlink, |
| 1182 | .mkdir = v9fs_vfs_mkdir, |
| 1183 | .rmdir = v9fs_vfs_rmdir, |
| 1184 | .mknod = v9fs_vfs_mknod, |
| 1185 | .rename = v9fs_vfs_rename, |
| 1186 | .getattr = v9fs_vfs_getattr, |
| 1187 | .setattr = v9fs_vfs_setattr, |
| 1188 | }; |
| 1189 | |
| 1190 | static const struct inode_operations v9fs_file_inode_operations = { |
| 1191 | .getattr = v9fs_vfs_getattr, |
| 1192 | .setattr = v9fs_vfs_setattr, |
| 1193 | }; |
| 1194 | |
| 1195 | static const struct inode_operations v9fs_symlink_inode_operations = { |
| 1196 | .readlink = v9fs_vfs_readlink, |
| 1197 | .follow_link = v9fs_vfs_follow_link, |
| 1198 | .put_link = v9fs_vfs_put_link, |
| 1199 | .getattr = v9fs_vfs_getattr, |
| 1200 | .setattr = v9fs_vfs_setattr, |
| 1201 | }; |