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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3 | * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. | |
4 | * | |
5 | * This copyrighted material is made available to anyone wishing to use, | |
6 | * modify, copy, or redistribute it subject to the terms and conditions | |
7 | * of the GNU General Public License v.2. | |
8 | */ | |
9 | ||
10 | #include <linux/sched.h> | |
11 | #include <linux/slab.h> | |
12 | #include <linux/spinlock.h> | |
13 | #include <linux/completion.h> | |
14 | #include <linux/buffer_head.h> | |
15 | #include <linux/namei.h> | |
16 | #include <linux/utsname.h> | |
17 | #include <linux/mm.h> | |
18 | #include <linux/xattr.h> | |
19 | #include <linux/posix_acl.h> | |
20 | #include <asm/semaphore.h> | |
21 | #include <asm/uaccess.h> | |
22 | ||
23 | #include "gfs2.h" | |
24 | #include "acl.h" | |
25 | #include "bmap.h" | |
26 | #include "dir.h" | |
27 | #include "eaops.h" | |
28 | #include "eattr.h" | |
29 | #include "glock.h" | |
30 | #include "inode.h" | |
31 | #include "meta_io.h" | |
32 | #include "ops_dentry.h" | |
33 | #include "ops_inode.h" | |
34 | #include "page.h" | |
35 | #include "quota.h" | |
36 | #include "rgrp.h" | |
37 | #include "trans.h" | |
38 | #include "unlinked.h" | |
39 | ||
40 | /** | |
41 | * gfs2_create - Create a file | |
42 | * @dir: The directory in which to create the file | |
43 | * @dentry: The dentry of the new file | |
44 | * @mode: The mode of the new file | |
45 | * | |
46 | * Returns: errno | |
47 | */ | |
48 | ||
49 | static int gfs2_create(struct inode *dir, struct dentry *dentry, | |
50 | int mode, struct nameidata *nd) | |
51 | { | |
52 | struct gfs2_inode *dip = get_v2ip(dir), *ip; | |
53 | struct gfs2_sbd *sdp = dip->i_sbd; | |
54 | struct gfs2_holder ghs[2]; | |
55 | struct inode *inode; | |
56 | int new = 1; | |
57 | int error; | |
58 | ||
59 | atomic_inc(&sdp->sd_ops_inode); | |
60 | ||
61 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); | |
62 | ||
63 | for (;;) { | |
64 | error = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode); | |
65 | if (!error) { | |
66 | ip = get_gl2ip(ghs[1].gh_gl); | |
67 | gfs2_trans_end(sdp); | |
68 | if (dip->i_alloc.al_rgd) | |
69 | gfs2_inplace_release(dip); | |
70 | gfs2_quota_unlock(dip); | |
71 | gfs2_alloc_put(dip); | |
72 | gfs2_glock_dq_uninit_m(2, ghs); | |
73 | break; | |
74 | } else if (error != -EEXIST || | |
75 | (nd->intent.open.flags & O_EXCL)) { | |
76 | gfs2_holder_uninit(ghs); | |
77 | return error; | |
78 | } | |
79 | ||
80 | error = gfs2_lookupi(dip, &dentry->d_name, 0, &ip); | |
81 | if (!error) { | |
82 | new = 0; | |
83 | gfs2_holder_uninit(ghs); | |
84 | break; | |
85 | } else if (error != -ENOENT) { | |
86 | gfs2_holder_uninit(ghs); | |
87 | return error; | |
88 | } | |
89 | } | |
90 | ||
91 | inode = gfs2_ip2v(ip); | |
92 | gfs2_inode_put(ip); | |
93 | ||
94 | if (!inode) | |
95 | return -ENOMEM; | |
96 | ||
97 | d_instantiate(dentry, inode); | |
98 | if (new) | |
99 | mark_inode_dirty(inode); | |
100 | ||
101 | return 0; | |
102 | } | |
103 | ||
104 | /** | |
105 | * gfs2_lookup - Look up a filename in a directory and return its inode | |
106 | * @dir: The directory inode | |
107 | * @dentry: The dentry of the new inode | |
108 | * @nd: passed from Linux VFS, ignored by us | |
109 | * | |
110 | * Called by the VFS layer. Lock dir and call gfs2_lookupi() | |
111 | * | |
112 | * Returns: errno | |
113 | */ | |
114 | ||
115 | static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry, | |
116 | struct nameidata *nd) | |
117 | { | |
118 | struct gfs2_inode *dip = get_v2ip(dir), *ip; | |
119 | struct gfs2_sbd *sdp = dip->i_sbd; | |
120 | struct inode *inode = NULL; | |
121 | int error; | |
122 | ||
123 | atomic_inc(&sdp->sd_ops_inode); | |
124 | ||
125 | if (!sdp->sd_args.ar_localcaching) | |
126 | dentry->d_op = &gfs2_dops; | |
127 | ||
128 | error = gfs2_lookupi(dip, &dentry->d_name, 0, &ip); | |
129 | if (!error) { | |
130 | inode = gfs2_ip2v(ip); | |
131 | gfs2_inode_put(ip); | |
132 | if (!inode) | |
133 | return ERR_PTR(-ENOMEM); | |
134 | ||
135 | } else if (error != -ENOENT) | |
136 | return ERR_PTR(error); | |
137 | ||
138 | if (inode) | |
139 | return d_splice_alias(inode, dentry); | |
140 | d_add(dentry, inode); | |
141 | ||
142 | return NULL; | |
143 | } | |
144 | ||
145 | /** | |
146 | * gfs2_link - Link to a file | |
147 | * @old_dentry: The inode to link | |
148 | * @dir: Add link to this directory | |
149 | * @dentry: The name of the link | |
150 | * | |
151 | * Link the inode in "old_dentry" into the directory "dir" with the | |
152 | * name in "dentry". | |
153 | * | |
154 | * Returns: errno | |
155 | */ | |
156 | ||
157 | static int gfs2_link(struct dentry *old_dentry, struct inode *dir, | |
158 | struct dentry *dentry) | |
159 | { | |
160 | struct gfs2_inode *dip = get_v2ip(dir); | |
161 | struct gfs2_sbd *sdp = dip->i_sbd; | |
162 | struct inode *inode = old_dentry->d_inode; | |
163 | struct gfs2_inode *ip = get_v2ip(inode); | |
164 | struct gfs2_holder ghs[2]; | |
165 | int alloc_required; | |
166 | int error; | |
167 | ||
168 | atomic_inc(&sdp->sd_ops_inode); | |
169 | ||
170 | if (S_ISDIR(ip->i_di.di_mode)) | |
171 | return -EPERM; | |
172 | ||
173 | gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); | |
174 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); | |
175 | ||
176 | error = gfs2_glock_nq_m(2, ghs); | |
177 | if (error) | |
178 | goto out; | |
179 | ||
180 | error = gfs2_repermission(dir, MAY_WRITE | MAY_EXEC, NULL); | |
181 | if (error) | |
182 | goto out_gunlock; | |
183 | ||
184 | error = gfs2_dir_search(dip, &dentry->d_name, NULL, NULL); | |
185 | switch (error) { | |
186 | case -ENOENT: | |
187 | break; | |
188 | case 0: | |
189 | error = -EEXIST; | |
190 | default: | |
191 | goto out_gunlock; | |
192 | } | |
193 | ||
194 | error = -EINVAL; | |
195 | if (!dip->i_di.di_nlink) | |
196 | goto out_gunlock; | |
197 | error = -EFBIG; | |
198 | if (dip->i_di.di_entries == (uint32_t)-1) | |
199 | goto out_gunlock; | |
200 | error = -EPERM; | |
201 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) | |
202 | goto out_gunlock; | |
203 | error = -EINVAL; | |
204 | if (!ip->i_di.di_nlink) | |
205 | goto out_gunlock; | |
206 | error = -EMLINK; | |
207 | if (ip->i_di.di_nlink == (uint32_t)-1) | |
208 | goto out_gunlock; | |
209 | ||
210 | error = gfs2_diradd_alloc_required(dip, &dentry->d_name, | |
211 | &alloc_required); | |
212 | if (error) | |
213 | goto out_gunlock; | |
214 | ||
215 | if (alloc_required) { | |
216 | struct gfs2_alloc *al = gfs2_alloc_get(dip); | |
217 | ||
218 | error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE); | |
219 | if (error) | |
220 | goto out_alloc; | |
221 | ||
222 | error = gfs2_quota_check(dip, dip->i_di.di_uid, | |
223 | dip->i_di.di_gid); | |
224 | if (error) | |
225 | goto out_gunlock_q; | |
226 | ||
227 | al->al_requested = sdp->sd_max_dirres; | |
228 | ||
229 | error = gfs2_inplace_reserve(dip); | |
230 | if (error) | |
231 | goto out_gunlock_q; | |
232 | ||
233 | error = gfs2_trans_begin(sdp, | |
234 | sdp->sd_max_dirres + | |
235 | al->al_rgd->rd_ri.ri_length + | |
236 | 2 * RES_DINODE + RES_STATFS + | |
237 | RES_QUOTA, 0); | |
238 | if (error) | |
239 | goto out_ipres; | |
240 | } else { | |
241 | error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF, 0); | |
242 | if (error) | |
243 | goto out_ipres; | |
244 | } | |
245 | ||
246 | error = gfs2_dir_add(dip, &dentry->d_name, &ip->i_num, | |
247 | IF2DT(ip->i_di.di_mode)); | |
248 | if (error) | |
249 | goto out_end_trans; | |
250 | ||
251 | error = gfs2_change_nlink(ip, +1); | |
252 | ||
253 | out_end_trans: | |
254 | gfs2_trans_end(sdp); | |
255 | ||
256 | out_ipres: | |
257 | if (alloc_required) | |
258 | gfs2_inplace_release(dip); | |
259 | ||
260 | out_gunlock_q: | |
261 | if (alloc_required) | |
262 | gfs2_quota_unlock(dip); | |
263 | ||
264 | out_alloc: | |
265 | if (alloc_required) | |
266 | gfs2_alloc_put(dip); | |
267 | ||
268 | out_gunlock: | |
269 | gfs2_glock_dq_m(2, ghs); | |
270 | ||
271 | out: | |
272 | gfs2_holder_uninit(ghs); | |
273 | gfs2_holder_uninit(ghs + 1); | |
274 | ||
275 | if (!error) { | |
276 | atomic_inc(&inode->i_count); | |
277 | d_instantiate(dentry, inode); | |
278 | mark_inode_dirty(inode); | |
279 | } | |
280 | ||
281 | return error; | |
282 | } | |
283 | ||
284 | /** | |
285 | * gfs2_unlink - Unlink a file | |
286 | * @dir: The inode of the directory containing the file to unlink | |
287 | * @dentry: The file itself | |
288 | * | |
289 | * Unlink a file. Call gfs2_unlinki() | |
290 | * | |
291 | * Returns: errno | |
292 | */ | |
293 | ||
294 | static int gfs2_unlink(struct inode *dir, struct dentry *dentry) | |
295 | { | |
296 | struct gfs2_inode *dip = get_v2ip(dir); | |
297 | struct gfs2_sbd *sdp = dip->i_sbd; | |
298 | struct gfs2_inode *ip = get_v2ip(dentry->d_inode); | |
299 | struct gfs2_unlinked *ul; | |
300 | struct gfs2_holder ghs[2]; | |
301 | int error; | |
302 | ||
303 | atomic_inc(&sdp->sd_ops_inode); | |
304 | ||
305 | error = gfs2_unlinked_get(sdp, &ul); | |
306 | if (error) | |
307 | return error; | |
308 | ||
309 | gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); | |
310 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); | |
311 | ||
312 | error = gfs2_glock_nq_m(2, ghs); | |
313 | if (error) | |
314 | goto out; | |
315 | ||
316 | error = gfs2_unlink_ok(dip, &dentry->d_name, ip); | |
317 | if (error) | |
318 | goto out_gunlock; | |
319 | ||
320 | error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF + | |
321 | RES_UNLINKED, 0); | |
322 | if (error) | |
323 | goto out_gunlock; | |
324 | ||
325 | error = gfs2_unlinki(dip, &dentry->d_name, ip,ul); | |
326 | ||
327 | gfs2_trans_end(sdp); | |
328 | ||
329 | out_gunlock: | |
330 | gfs2_glock_dq_m(2, ghs); | |
331 | ||
332 | out: | |
333 | gfs2_holder_uninit(ghs); | |
334 | gfs2_holder_uninit(ghs + 1); | |
335 | ||
336 | gfs2_unlinked_put(sdp, ul); | |
337 | ||
338 | return error; | |
339 | } | |
340 | ||
341 | /** | |
342 | * gfs2_symlink - Create a symlink | |
343 | * @dir: The directory to create the symlink in | |
344 | * @dentry: The dentry to put the symlink in | |
345 | * @symname: The thing which the link points to | |
346 | * | |
347 | * Returns: errno | |
348 | */ | |
349 | ||
350 | static int gfs2_symlink(struct inode *dir, struct dentry *dentry, | |
351 | const char *symname) | |
352 | { | |
353 | struct gfs2_inode *dip = get_v2ip(dir), *ip; | |
354 | struct gfs2_sbd *sdp = dip->i_sbd; | |
355 | struct gfs2_holder ghs[2]; | |
356 | struct inode *inode; | |
357 | struct buffer_head *dibh; | |
358 | int size; | |
359 | int error; | |
360 | ||
361 | atomic_inc(&sdp->sd_ops_inode); | |
362 | ||
363 | /* Must be stuffed with a null terminator for gfs2_follow_link() */ | |
364 | size = strlen(symname); | |
365 | if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1) | |
366 | return -ENAMETOOLONG; | |
367 | ||
368 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); | |
369 | ||
370 | error = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO); | |
371 | if (error) { | |
372 | gfs2_holder_uninit(ghs); | |
373 | return error; | |
374 | } | |
375 | ||
376 | ip = get_gl2ip(ghs[1].gh_gl); | |
377 | ||
378 | ip->i_di.di_size = size; | |
379 | ||
380 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
381 | ||
382 | if (!gfs2_assert_withdraw(sdp, !error)) { | |
383 | gfs2_dinode_out(&ip->i_di, dibh->b_data); | |
384 | memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname, | |
385 | size); | |
386 | brelse(dibh); | |
387 | } | |
388 | ||
389 | gfs2_trans_end(sdp); | |
390 | if (dip->i_alloc.al_rgd) | |
391 | gfs2_inplace_release(dip); | |
392 | gfs2_quota_unlock(dip); | |
393 | gfs2_alloc_put(dip); | |
394 | ||
395 | gfs2_glock_dq_uninit_m(2, ghs); | |
396 | ||
397 | inode = gfs2_ip2v(ip); | |
398 | gfs2_inode_put(ip); | |
399 | ||
400 | if (!inode) | |
401 | return -ENOMEM; | |
402 | ||
403 | d_instantiate(dentry, inode); | |
404 | mark_inode_dirty(inode); | |
405 | ||
406 | return 0; | |
407 | } | |
408 | ||
409 | /** | |
410 | * gfs2_mkdir - Make a directory | |
411 | * @dir: The parent directory of the new one | |
412 | * @dentry: The dentry of the new directory | |
413 | * @mode: The mode of the new directory | |
414 | * | |
415 | * Returns: errno | |
416 | */ | |
417 | ||
418 | static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode) | |
419 | { | |
420 | struct gfs2_inode *dip = get_v2ip(dir), *ip; | |
421 | struct gfs2_sbd *sdp = dip->i_sbd; | |
422 | struct gfs2_holder ghs[2]; | |
423 | struct inode *inode; | |
424 | struct buffer_head *dibh; | |
425 | int error; | |
426 | ||
427 | atomic_inc(&sdp->sd_ops_inode); | |
428 | ||
429 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); | |
430 | ||
431 | error = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode); | |
432 | if (error) { | |
433 | gfs2_holder_uninit(ghs); | |
434 | return error; | |
435 | } | |
436 | ||
437 | ip = get_gl2ip(ghs[1].gh_gl); | |
438 | ||
439 | ip->i_di.di_nlink = 2; | |
440 | ip->i_di.di_size = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); | |
441 | ip->i_di.di_flags |= GFS2_DIF_JDATA; | |
442 | ip->i_di.di_payload_format = GFS2_FORMAT_DE; | |
443 | ip->i_di.di_entries = 2; | |
444 | ||
445 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
446 | ||
447 | if (!gfs2_assert_withdraw(sdp, !error)) { | |
448 | struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data; | |
449 | struct gfs2_dirent *dent; | |
450 | ||
451 | gfs2_dirent_alloc(ip, dibh, 1, &dent); | |
452 | ||
453 | dent->de_inum = di->di_num; /* already GFS2 endian */ | |
454 | dent->de_hash = gfs2_disk_hash(".", 1); | |
455 | dent->de_hash = cpu_to_be32(dent->de_hash); | |
456 | dent->de_type = DT_DIR; | |
457 | memcpy((char *) (dent + 1), ".", 1); | |
458 | di->di_entries = cpu_to_be32(1); | |
459 | ||
460 | gfs2_dirent_alloc(ip, dibh, 2, &dent); | |
461 | ||
462 | gfs2_inum_out(&dip->i_num, (char *) &dent->de_inum); | |
463 | dent->de_hash = gfs2_disk_hash("..", 2); | |
464 | dent->de_hash = cpu_to_be32(dent->de_hash); | |
465 | dent->de_type = DT_DIR; | |
466 | memcpy((char *) (dent + 1), "..", 2); | |
467 | ||
468 | gfs2_dinode_out(&ip->i_di, (char *)di); | |
469 | ||
470 | brelse(dibh); | |
471 | } | |
472 | ||
473 | error = gfs2_change_nlink(dip, +1); | |
474 | gfs2_assert_withdraw(sdp, !error); /* dip already pinned */ | |
475 | ||
476 | gfs2_trans_end(sdp); | |
477 | if (dip->i_alloc.al_rgd) | |
478 | gfs2_inplace_release(dip); | |
479 | gfs2_quota_unlock(dip); | |
480 | gfs2_alloc_put(dip); | |
481 | ||
482 | gfs2_glock_dq_uninit_m(2, ghs); | |
483 | ||
484 | inode = gfs2_ip2v(ip); | |
485 | gfs2_inode_put(ip); | |
486 | ||
487 | if (!inode) | |
488 | return -ENOMEM; | |
489 | ||
490 | d_instantiate(dentry, inode); | |
491 | mark_inode_dirty(inode); | |
492 | ||
493 | return 0; | |
494 | } | |
495 | ||
496 | /** | |
497 | * gfs2_rmdir - Remove a directory | |
498 | * @dir: The parent directory of the directory to be removed | |
499 | * @dentry: The dentry of the directory to remove | |
500 | * | |
501 | * Remove a directory. Call gfs2_rmdiri() | |
502 | * | |
503 | * Returns: errno | |
504 | */ | |
505 | ||
506 | static int gfs2_rmdir(struct inode *dir, struct dentry *dentry) | |
507 | { | |
508 | struct gfs2_inode *dip = get_v2ip(dir); | |
509 | struct gfs2_sbd *sdp = dip->i_sbd; | |
510 | struct gfs2_inode *ip = get_v2ip(dentry->d_inode); | |
511 | struct gfs2_unlinked *ul; | |
512 | struct gfs2_holder ghs[2]; | |
513 | int error; | |
514 | ||
515 | atomic_inc(&sdp->sd_ops_inode); | |
516 | ||
517 | error = gfs2_unlinked_get(sdp, &ul); | |
518 | if (error) | |
519 | return error; | |
520 | ||
521 | gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); | |
522 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); | |
523 | ||
524 | error = gfs2_glock_nq_m(2, ghs); | |
525 | if (error) | |
526 | goto out; | |
527 | ||
528 | error = gfs2_unlink_ok(dip, &dentry->d_name, ip); | |
529 | if (error) | |
530 | goto out_gunlock; | |
531 | ||
532 | if (ip->i_di.di_entries < 2) { | |
533 | if (gfs2_consist_inode(ip)) | |
534 | gfs2_dinode_print(&ip->i_di); | |
535 | error = -EIO; | |
536 | goto out_gunlock; | |
537 | } | |
538 | if (ip->i_di.di_entries > 2) { | |
539 | error = -ENOTEMPTY; | |
540 | goto out_gunlock; | |
541 | } | |
542 | ||
543 | error = gfs2_trans_begin(sdp, 2 * RES_DINODE + 3 * RES_LEAF + | |
544 | RES_UNLINKED, 0); | |
545 | if (error) | |
546 | goto out_gunlock; | |
547 | ||
548 | error = gfs2_rmdiri(dip, &dentry->d_name, ip, ul); | |
549 | ||
550 | gfs2_trans_end(sdp); | |
551 | ||
552 | out_gunlock: | |
553 | gfs2_glock_dq_m(2, ghs); | |
554 | ||
555 | out: | |
556 | gfs2_holder_uninit(ghs); | |
557 | gfs2_holder_uninit(ghs + 1); | |
558 | ||
559 | gfs2_unlinked_put(sdp, ul); | |
560 | ||
561 | return error; | |
562 | } | |
563 | ||
564 | /** | |
565 | * gfs2_mknod - Make a special file | |
566 | * @dir: The directory in which the special file will reside | |
567 | * @dentry: The dentry of the special file | |
568 | * @mode: The mode of the special file | |
569 | * @rdev: The device specification of the special file | |
570 | * | |
571 | */ | |
572 | ||
573 | static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode, | |
574 | dev_t dev) | |
575 | { | |
576 | struct gfs2_inode *dip = get_v2ip(dir), *ip; | |
577 | struct gfs2_sbd *sdp = dip->i_sbd; | |
578 | struct gfs2_holder ghs[2]; | |
579 | struct inode *inode; | |
580 | struct buffer_head *dibh; | |
581 | uint32_t major = 0, minor = 0; | |
582 | int error; | |
583 | ||
584 | atomic_inc(&sdp->sd_ops_inode); | |
585 | ||
586 | switch (mode & S_IFMT) { | |
587 | case S_IFBLK: | |
588 | case S_IFCHR: | |
589 | major = MAJOR(dev); | |
590 | minor = MINOR(dev); | |
591 | break; | |
592 | case S_IFIFO: | |
593 | case S_IFSOCK: | |
594 | break; | |
595 | default: | |
596 | return -EOPNOTSUPP; | |
597 | }; | |
598 | ||
599 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); | |
600 | ||
601 | error = gfs2_createi(ghs, &dentry->d_name, mode); | |
602 | if (error) { | |
603 | gfs2_holder_uninit(ghs); | |
604 | return error; | |
605 | } | |
606 | ||
607 | ip = get_gl2ip(ghs[1].gh_gl); | |
608 | ||
609 | ip->i_di.di_major = major; | |
610 | ip->i_di.di_minor = minor; | |
611 | ||
612 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
613 | ||
614 | if (!gfs2_assert_withdraw(sdp, !error)) { | |
615 | gfs2_dinode_out(&ip->i_di, dibh->b_data); | |
616 | brelse(dibh); | |
617 | } | |
618 | ||
619 | gfs2_trans_end(sdp); | |
620 | if (dip->i_alloc.al_rgd) | |
621 | gfs2_inplace_release(dip); | |
622 | gfs2_quota_unlock(dip); | |
623 | gfs2_alloc_put(dip); | |
624 | ||
625 | gfs2_glock_dq_uninit_m(2, ghs); | |
626 | ||
627 | inode = gfs2_ip2v(ip); | |
628 | gfs2_inode_put(ip); | |
629 | ||
630 | if (!inode) | |
631 | return -ENOMEM; | |
632 | ||
633 | d_instantiate(dentry, inode); | |
634 | mark_inode_dirty(inode); | |
635 | ||
636 | return 0; | |
637 | } | |
638 | ||
639 | /** | |
640 | * gfs2_rename - Rename a file | |
641 | * @odir: Parent directory of old file name | |
642 | * @odentry: The old dentry of the file | |
643 | * @ndir: Parent directory of new file name | |
644 | * @ndentry: The new dentry of the file | |
645 | * | |
646 | * Returns: errno | |
647 | */ | |
648 | ||
649 | static int gfs2_rename(struct inode *odir, struct dentry *odentry, | |
650 | struct inode *ndir, struct dentry *ndentry) | |
651 | { | |
652 | struct gfs2_inode *odip = get_v2ip(odir); | |
653 | struct gfs2_inode *ndip = get_v2ip(ndir); | |
654 | struct gfs2_inode *ip = get_v2ip(odentry->d_inode); | |
655 | struct gfs2_inode *nip = NULL; | |
656 | struct gfs2_sbd *sdp = odip->i_sbd; | |
657 | struct gfs2_unlinked *ul; | |
658 | struct gfs2_holder ghs[4], r_gh; | |
659 | unsigned int num_gh; | |
660 | int dir_rename = 0; | |
661 | int alloc_required; | |
662 | unsigned int x; | |
663 | int error; | |
664 | ||
665 | atomic_inc(&sdp->sd_ops_inode); | |
666 | ||
667 | if (ndentry->d_inode) { | |
668 | nip = get_v2ip(ndentry->d_inode); | |
669 | if (ip == nip) | |
670 | return 0; | |
671 | } | |
672 | ||
673 | error = gfs2_unlinked_get(sdp, &ul); | |
674 | if (error) | |
675 | return error; | |
676 | ||
677 | /* Make sure we aren't trying to move a dirctory into it's subdir */ | |
678 | ||
679 | if (S_ISDIR(ip->i_di.di_mode) && odip != ndip) { | |
680 | dir_rename = 1; | |
681 | ||
682 | error = gfs2_glock_nq_init(sdp->sd_rename_gl, | |
683 | LM_ST_EXCLUSIVE, 0, | |
684 | &r_gh); | |
685 | if (error) | |
686 | goto out; | |
687 | ||
688 | error = gfs2_ok_to_move(ip, ndip); | |
689 | if (error) | |
690 | goto out_gunlock_r; | |
691 | } | |
692 | ||
693 | gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); | |
694 | gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); | |
695 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 2); | |
696 | num_gh = 3; | |
697 | ||
698 | if (nip) | |
699 | gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++); | |
700 | ||
701 | error = gfs2_glock_nq_m(num_gh, ghs); | |
702 | if (error) | |
703 | goto out_uninit; | |
704 | ||
705 | /* Check out the old directory */ | |
706 | ||
707 | error = gfs2_unlink_ok(odip, &odentry->d_name, ip); | |
708 | if (error) | |
709 | goto out_gunlock; | |
710 | ||
711 | /* Check out the new directory */ | |
712 | ||
713 | if (nip) { | |
714 | error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip); | |
715 | if (error) | |
716 | goto out_gunlock; | |
717 | ||
718 | if (S_ISDIR(nip->i_di.di_mode)) { | |
719 | if (nip->i_di.di_entries < 2) { | |
720 | if (gfs2_consist_inode(nip)) | |
721 | gfs2_dinode_print(&nip->i_di); | |
722 | error = -EIO; | |
723 | goto out_gunlock; | |
724 | } | |
725 | if (nip->i_di.di_entries > 2) { | |
726 | error = -ENOTEMPTY; | |
727 | goto out_gunlock; | |
728 | } | |
729 | } | |
730 | } else { | |
731 | error = gfs2_repermission(ndir, MAY_WRITE | MAY_EXEC, NULL); | |
732 | if (error) | |
733 | goto out_gunlock; | |
734 | ||
735 | error = gfs2_dir_search(ndip, &ndentry->d_name, NULL, NULL); | |
736 | switch (error) { | |
737 | case -ENOENT: | |
738 | error = 0; | |
739 | break; | |
740 | case 0: | |
741 | error = -EEXIST; | |
742 | default: | |
743 | goto out_gunlock; | |
744 | }; | |
745 | ||
746 | if (odip != ndip) { | |
747 | if (!ndip->i_di.di_nlink) { | |
748 | error = -EINVAL; | |
749 | goto out_gunlock; | |
750 | } | |
751 | if (ndip->i_di.di_entries == (uint32_t)-1) { | |
752 | error = -EFBIG; | |
753 | goto out_gunlock; | |
754 | } | |
755 | if (S_ISDIR(ip->i_di.di_mode) && | |
756 | ndip->i_di.di_nlink == (uint32_t)-1) { | |
757 | error = -EMLINK; | |
758 | goto out_gunlock; | |
759 | } | |
760 | } | |
761 | } | |
762 | ||
763 | /* Check out the dir to be renamed */ | |
764 | ||
765 | if (dir_rename) { | |
766 | error = gfs2_repermission(odentry->d_inode, MAY_WRITE, NULL); | |
767 | if (error) | |
768 | goto out_gunlock; | |
769 | } | |
770 | ||
771 | error = gfs2_diradd_alloc_required(ndip, &ndentry->d_name, | |
772 | &alloc_required); | |
773 | if (error) | |
774 | goto out_gunlock; | |
775 | ||
776 | if (alloc_required) { | |
777 | struct gfs2_alloc *al = gfs2_alloc_get(ndip); | |
778 | ||
779 | error = gfs2_quota_lock(ndip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE); | |
780 | if (error) | |
781 | goto out_alloc; | |
782 | ||
783 | error = gfs2_quota_check(ndip, ndip->i_di.di_uid, | |
784 | ndip->i_di.di_gid); | |
785 | if (error) | |
786 | goto out_gunlock_q; | |
787 | ||
788 | al->al_requested = sdp->sd_max_dirres; | |
789 | ||
790 | error = gfs2_inplace_reserve(ndip); | |
791 | if (error) | |
792 | goto out_gunlock_q; | |
793 | ||
794 | error = gfs2_trans_begin(sdp, | |
795 | sdp->sd_max_dirres + | |
796 | al->al_rgd->rd_ri.ri_length + | |
797 | 4 * RES_DINODE + 4 * RES_LEAF + | |
798 | RES_UNLINKED + RES_STATFS + | |
799 | RES_QUOTA, 0); | |
800 | if (error) | |
801 | goto out_ipreserv; | |
802 | } else { | |
803 | error = gfs2_trans_begin(sdp, 4 * RES_DINODE + | |
804 | 5 * RES_LEAF + | |
805 | RES_UNLINKED, 0); | |
806 | if (error) | |
807 | goto out_gunlock; | |
808 | } | |
809 | ||
810 | /* Remove the target file, if it exists */ | |
811 | ||
812 | if (nip) { | |
813 | if (S_ISDIR(nip->i_di.di_mode)) | |
814 | error = gfs2_rmdiri(ndip, &ndentry->d_name, nip, ul); | |
815 | else | |
816 | error = gfs2_unlinki(ndip, &ndentry->d_name, nip, ul); | |
817 | if (error) | |
818 | goto out_end_trans; | |
819 | } | |
820 | ||
821 | if (dir_rename) { | |
822 | struct qstr name; | |
823 | name.len = 2; | |
824 | name.name = ".."; | |
825 | ||
826 | error = gfs2_change_nlink(ndip, +1); | |
827 | if (error) | |
828 | goto out_end_trans; | |
829 | error = gfs2_change_nlink(odip, -1); | |
830 | if (error) | |
831 | goto out_end_trans; | |
832 | ||
833 | error = gfs2_dir_mvino(ip, &name, &ndip->i_num, DT_DIR); | |
834 | if (error) | |
835 | goto out_end_trans; | |
836 | } else { | |
837 | struct buffer_head *dibh; | |
838 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
839 | if (error) | |
840 | goto out_end_trans; | |
841 | ip->i_di.di_ctime = get_seconds(); | |
d4e9c4c3 | 842 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
b3b94faa DT |
843 | gfs2_dinode_out(&ip->i_di, dibh->b_data); |
844 | brelse(dibh); | |
845 | } | |
846 | ||
847 | error = gfs2_dir_del(odip, &odentry->d_name); | |
848 | if (error) | |
849 | goto out_end_trans; | |
850 | ||
851 | error = gfs2_dir_add(ndip, &ndentry->d_name, &ip->i_num, | |
852 | IF2DT(ip->i_di.di_mode)); | |
853 | if (error) | |
854 | goto out_end_trans; | |
855 | ||
856 | out_end_trans: | |
857 | gfs2_trans_end(sdp); | |
858 | ||
859 | out_ipreserv: | |
860 | if (alloc_required) | |
861 | gfs2_inplace_release(ndip); | |
862 | ||
863 | out_gunlock_q: | |
864 | if (alloc_required) | |
865 | gfs2_quota_unlock(ndip); | |
866 | ||
867 | out_alloc: | |
868 | if (alloc_required) | |
869 | gfs2_alloc_put(ndip); | |
870 | ||
871 | out_gunlock: | |
872 | gfs2_glock_dq_m(num_gh, ghs); | |
873 | ||
874 | out_uninit: | |
875 | for (x = 0; x < num_gh; x++) | |
876 | gfs2_holder_uninit(ghs + x); | |
877 | ||
878 | out_gunlock_r: | |
879 | if (dir_rename) | |
880 | gfs2_glock_dq_uninit(&r_gh); | |
881 | ||
882 | out: | |
883 | gfs2_unlinked_put(sdp, ul); | |
884 | ||
885 | return error; | |
886 | } | |
887 | ||
888 | /** | |
889 | * gfs2_readlink - Read the value of a symlink | |
890 | * @dentry: the symlink | |
891 | * @buf: the buffer to read the symlink data into | |
892 | * @size: the size of the buffer | |
893 | * | |
894 | * Returns: errno | |
895 | */ | |
896 | ||
897 | static int gfs2_readlink(struct dentry *dentry, char __user *user_buf, | |
898 | int user_size) | |
899 | { | |
900 | struct gfs2_inode *ip = get_v2ip(dentry->d_inode); | |
901 | char array[GFS2_FAST_NAME_SIZE], *buf = array; | |
902 | unsigned int len = GFS2_FAST_NAME_SIZE; | |
903 | int error; | |
904 | ||
905 | atomic_inc(&ip->i_sbd->sd_ops_inode); | |
906 | ||
907 | error = gfs2_readlinki(ip, &buf, &len); | |
908 | if (error) | |
909 | return error; | |
910 | ||
911 | if (user_size > len - 1) | |
912 | user_size = len - 1; | |
913 | ||
914 | if (copy_to_user(user_buf, buf, user_size)) | |
915 | error = -EFAULT; | |
916 | else | |
917 | error = user_size; | |
918 | ||
919 | if (buf != array) | |
920 | kfree(buf); | |
921 | ||
922 | return error; | |
923 | } | |
924 | ||
925 | /** | |
926 | * gfs2_follow_link - Follow a symbolic link | |
927 | * @dentry: The dentry of the link | |
928 | * @nd: Data that we pass to vfs_follow_link() | |
929 | * | |
930 | * This can handle symlinks of any size. It is optimised for symlinks | |
931 | * under GFS2_FAST_NAME_SIZE. | |
932 | * | |
933 | * Returns: 0 on success or error code | |
934 | */ | |
935 | ||
936 | static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd) | |
937 | { | |
938 | struct gfs2_inode *ip = get_v2ip(dentry->d_inode); | |
939 | char array[GFS2_FAST_NAME_SIZE], *buf = array; | |
940 | unsigned int len = GFS2_FAST_NAME_SIZE; | |
941 | int error; | |
942 | ||
943 | atomic_inc(&ip->i_sbd->sd_ops_inode); | |
944 | ||
945 | error = gfs2_readlinki(ip, &buf, &len); | |
946 | if (!error) { | |
947 | error = vfs_follow_link(nd, buf); | |
948 | if (buf != array) | |
949 | kfree(buf); | |
950 | } | |
951 | ||
952 | return ERR_PTR(error); | |
953 | } | |
954 | ||
955 | /** | |
956 | * gfs2_permission - | |
957 | * @inode: | |
958 | * @mask: | |
959 | * @nd: passed from Linux VFS, ignored by us | |
960 | * | |
961 | * Returns: errno | |
962 | */ | |
963 | ||
964 | static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd) | |
965 | { | |
966 | struct gfs2_inode *ip = get_v2ip(inode); | |
967 | struct gfs2_holder i_gh; | |
968 | int error; | |
969 | ||
970 | atomic_inc(&ip->i_sbd->sd_ops_inode); | |
971 | ||
972 | if (ip->i_vn == ip->i_gl->gl_vn) | |
973 | return generic_permission(inode, mask, gfs2_check_acl); | |
974 | ||
975 | error = gfs2_glock_nq_init(ip->i_gl, | |
976 | LM_ST_SHARED, LM_FLAG_ANY, | |
977 | &i_gh); | |
978 | if (!error) { | |
979 | error = generic_permission(inode, mask, gfs2_check_acl_locked); | |
980 | gfs2_glock_dq_uninit(&i_gh); | |
981 | } | |
982 | ||
983 | return error; | |
984 | } | |
985 | ||
986 | static int setattr_size(struct inode *inode, struct iattr *attr) | |
987 | { | |
988 | struct gfs2_inode *ip = get_v2ip(inode); | |
989 | int error; | |
990 | ||
991 | if (attr->ia_size != ip->i_di.di_size) { | |
992 | error = vmtruncate(inode, attr->ia_size); | |
993 | if (error) | |
994 | return error; | |
995 | } | |
996 | ||
997 | error = gfs2_truncatei(ip, attr->ia_size, gfs2_truncator_page); | |
998 | if (error) | |
999 | return error; | |
1000 | ||
1001 | return error; | |
1002 | } | |
1003 | ||
1004 | static int setattr_chown(struct inode *inode, struct iattr *attr) | |
1005 | { | |
1006 | struct gfs2_inode *ip = get_v2ip(inode); | |
1007 | struct gfs2_sbd *sdp = ip->i_sbd; | |
1008 | struct buffer_head *dibh; | |
1009 | uint32_t ouid, ogid, nuid, ngid; | |
1010 | int error; | |
1011 | ||
1012 | ouid = ip->i_di.di_uid; | |
1013 | ogid = ip->i_di.di_gid; | |
1014 | nuid = attr->ia_uid; | |
1015 | ngid = attr->ia_gid; | |
1016 | ||
1017 | if (!(attr->ia_valid & ATTR_UID) || ouid == nuid) | |
1018 | ouid = nuid = NO_QUOTA_CHANGE; | |
1019 | if (!(attr->ia_valid & ATTR_GID) || ogid == ngid) | |
1020 | ogid = ngid = NO_QUOTA_CHANGE; | |
1021 | ||
1022 | gfs2_alloc_get(ip); | |
1023 | ||
1024 | error = gfs2_quota_lock(ip, nuid, ngid); | |
1025 | if (error) | |
1026 | goto out_alloc; | |
1027 | ||
1028 | if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) { | |
1029 | error = gfs2_quota_check(ip, nuid, ngid); | |
1030 | if (error) | |
1031 | goto out_gunlock_q; | |
1032 | } | |
1033 | ||
1034 | error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0); | |
1035 | if (error) | |
1036 | goto out_gunlock_q; | |
1037 | ||
1038 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
1039 | if (error) | |
1040 | goto out_end_trans; | |
1041 | ||
1042 | error = inode_setattr(inode, attr); | |
1043 | gfs2_assert_warn(sdp, !error); | |
1044 | gfs2_inode_attr_out(ip); | |
1045 | ||
d4e9c4c3 | 1046 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
b3b94faa DT |
1047 | gfs2_dinode_out(&ip->i_di, dibh->b_data); |
1048 | brelse(dibh); | |
1049 | ||
1050 | if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) { | |
1051 | gfs2_quota_change(ip, -ip->i_di.di_blocks, | |
1052 | ouid, ogid); | |
1053 | gfs2_quota_change(ip, ip->i_di.di_blocks, | |
1054 | nuid, ngid); | |
1055 | } | |
1056 | ||
1057 | out_end_trans: | |
1058 | gfs2_trans_end(sdp); | |
1059 | ||
1060 | out_gunlock_q: | |
1061 | gfs2_quota_unlock(ip); | |
1062 | ||
1063 | out_alloc: | |
1064 | gfs2_alloc_put(ip); | |
1065 | ||
1066 | return error; | |
1067 | } | |
1068 | ||
1069 | /** | |
1070 | * gfs2_setattr - Change attributes on an inode | |
1071 | * @dentry: The dentry which is changing | |
1072 | * @attr: The structure describing the change | |
1073 | * | |
1074 | * The VFS layer wants to change one or more of an inodes attributes. Write | |
1075 | * that change out to disk. | |
1076 | * | |
1077 | * Returns: errno | |
1078 | */ | |
1079 | ||
1080 | static int gfs2_setattr(struct dentry *dentry, struct iattr *attr) | |
1081 | { | |
1082 | struct inode *inode = dentry->d_inode; | |
1083 | struct gfs2_inode *ip = get_v2ip(inode); | |
1084 | struct gfs2_holder i_gh; | |
1085 | int error; | |
1086 | ||
1087 | atomic_inc(&ip->i_sbd->sd_ops_inode); | |
1088 | ||
1089 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh); | |
1090 | if (error) | |
1091 | return error; | |
1092 | ||
1093 | error = -EPERM; | |
1094 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) | |
1095 | goto out; | |
1096 | ||
1097 | error = inode_change_ok(inode, attr); | |
1098 | if (error) | |
1099 | goto out; | |
1100 | ||
1101 | if (attr->ia_valid & ATTR_SIZE) | |
1102 | error = setattr_size(inode, attr); | |
1103 | else if (attr->ia_valid & (ATTR_UID | ATTR_GID)) | |
1104 | error = setattr_chown(inode, attr); | |
1105 | else if ((attr->ia_valid & ATTR_MODE) && IS_POSIXACL(inode)) | |
1106 | error = gfs2_acl_chmod(ip, attr); | |
1107 | else | |
1108 | error = gfs2_setattr_simple(ip, attr); | |
1109 | ||
1110 | out: | |
1111 | gfs2_glock_dq_uninit(&i_gh); | |
1112 | ||
1113 | if (!error) | |
1114 | mark_inode_dirty(inode); | |
1115 | ||
1116 | return error; | |
1117 | } | |
1118 | ||
1119 | /** | |
1120 | * gfs2_getattr - Read out an inode's attributes | |
1121 | * @mnt: ? | |
1122 | * @dentry: The dentry to stat | |
1123 | * @stat: The inode's stats | |
1124 | * | |
1125 | * Returns: errno | |
1126 | */ | |
1127 | ||
1128 | static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry, | |
1129 | struct kstat *stat) | |
1130 | { | |
1131 | struct inode *inode = dentry->d_inode; | |
1132 | struct gfs2_inode *ip = get_v2ip(inode); | |
1133 | struct gfs2_holder gh; | |
1134 | int error; | |
1135 | ||
1136 | atomic_inc(&ip->i_sbd->sd_ops_inode); | |
1137 | ||
1138 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); | |
1139 | if (!error) { | |
1140 | generic_fillattr(inode, stat); | |
1141 | gfs2_glock_dq_uninit(&gh); | |
1142 | } | |
1143 | ||
1144 | return error; | |
1145 | } | |
1146 | ||
1147 | static int gfs2_setxattr(struct dentry *dentry, const char *name, | |
1148 | const void *data, size_t size, int flags) | |
1149 | { | |
1150 | struct gfs2_inode *ip = get_v2ip(dentry->d_inode); | |
1151 | struct gfs2_ea_request er; | |
1152 | ||
1153 | atomic_inc(&ip->i_sbd->sd_ops_inode); | |
1154 | ||
1155 | memset(&er, 0, sizeof(struct gfs2_ea_request)); | |
1156 | er.er_type = gfs2_ea_name2type(name, &er.er_name); | |
1157 | if (er.er_type == GFS2_EATYPE_UNUSED) | |
1158 | return -EOPNOTSUPP; | |
1159 | er.er_data = (char *)data; | |
1160 | er.er_name_len = strlen(er.er_name); | |
1161 | er.er_data_len = size; | |
1162 | er.er_flags = flags; | |
1163 | ||
1164 | gfs2_assert_warn(ip->i_sbd, !(er.er_flags & GFS2_ERF_MODE)); | |
1165 | ||
1166 | return gfs2_ea_set(ip, &er); | |
1167 | } | |
1168 | ||
1169 | static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name, | |
1170 | void *data, size_t size) | |
1171 | { | |
1172 | struct gfs2_ea_request er; | |
1173 | ||
1174 | atomic_inc(&get_v2sdp(dentry->d_inode->i_sb)->sd_ops_inode); | |
1175 | ||
1176 | memset(&er, 0, sizeof(struct gfs2_ea_request)); | |
1177 | er.er_type = gfs2_ea_name2type(name, &er.er_name); | |
1178 | if (er.er_type == GFS2_EATYPE_UNUSED) | |
1179 | return -EOPNOTSUPP; | |
1180 | er.er_data = data; | |
1181 | er.er_name_len = strlen(er.er_name); | |
1182 | er.er_data_len = size; | |
1183 | ||
1184 | return gfs2_ea_get(get_v2ip(dentry->d_inode), &er); | |
1185 | } | |
1186 | ||
1187 | static ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size) | |
1188 | { | |
1189 | struct gfs2_ea_request er; | |
1190 | ||
1191 | atomic_inc(&get_v2sdp(dentry->d_inode->i_sb)->sd_ops_inode); | |
1192 | ||
1193 | memset(&er, 0, sizeof(struct gfs2_ea_request)); | |
1194 | er.er_data = (size) ? buffer : NULL; | |
1195 | er.er_data_len = size; | |
1196 | ||
1197 | return gfs2_ea_list(get_v2ip(dentry->d_inode), &er); | |
1198 | } | |
1199 | ||
1200 | static int gfs2_removexattr(struct dentry *dentry, const char *name) | |
1201 | { | |
1202 | struct gfs2_ea_request er; | |
1203 | ||
1204 | atomic_inc(&get_v2sdp(dentry->d_inode->i_sb)->sd_ops_inode); | |
1205 | ||
1206 | memset(&er, 0, sizeof(struct gfs2_ea_request)); | |
1207 | er.er_type = gfs2_ea_name2type(name, &er.er_name); | |
1208 | if (er.er_type == GFS2_EATYPE_UNUSED) | |
1209 | return -EOPNOTSUPP; | |
1210 | er.er_name_len = strlen(er.er_name); | |
1211 | ||
1212 | return gfs2_ea_remove(get_v2ip(dentry->d_inode), &er); | |
1213 | } | |
1214 | ||
1215 | struct inode_operations gfs2_file_iops = { | |
1216 | .permission = gfs2_permission, | |
1217 | .setattr = gfs2_setattr, | |
1218 | .getattr = gfs2_getattr, | |
1219 | .setxattr = gfs2_setxattr, | |
1220 | .getxattr = gfs2_getxattr, | |
1221 | .listxattr = gfs2_listxattr, | |
1222 | .removexattr = gfs2_removexattr, | |
1223 | }; | |
1224 | ||
1225 | struct inode_operations gfs2_dev_iops = { | |
1226 | .permission = gfs2_permission, | |
1227 | .setattr = gfs2_setattr, | |
1228 | .getattr = gfs2_getattr, | |
1229 | .setxattr = gfs2_setxattr, | |
1230 | .getxattr = gfs2_getxattr, | |
1231 | .listxattr = gfs2_listxattr, | |
1232 | .removexattr = gfs2_removexattr, | |
1233 | }; | |
1234 | ||
1235 | struct inode_operations gfs2_dir_iops = { | |
1236 | .create = gfs2_create, | |
1237 | .lookup = gfs2_lookup, | |
1238 | .link = gfs2_link, | |
1239 | .unlink = gfs2_unlink, | |
1240 | .symlink = gfs2_symlink, | |
1241 | .mkdir = gfs2_mkdir, | |
1242 | .rmdir = gfs2_rmdir, | |
1243 | .mknod = gfs2_mknod, | |
1244 | .rename = gfs2_rename, | |
1245 | .permission = gfs2_permission, | |
1246 | .setattr = gfs2_setattr, | |
1247 | .getattr = gfs2_getattr, | |
1248 | .setxattr = gfs2_setxattr, | |
1249 | .getxattr = gfs2_getxattr, | |
1250 | .listxattr = gfs2_listxattr, | |
1251 | .removexattr = gfs2_removexattr, | |
1252 | }; | |
1253 | ||
1254 | struct inode_operations gfs2_symlink_iops = { | |
1255 | .readlink = gfs2_readlink, | |
1256 | .follow_link = gfs2_follow_link, | |
1257 | .permission = gfs2_permission, | |
1258 | .setattr = gfs2_setattr, | |
1259 | .getattr = gfs2_getattr, | |
1260 | .setxattr = gfs2_setxattr, | |
1261 | .getxattr = gfs2_getxattr, | |
1262 | .listxattr = gfs2_listxattr, | |
1263 | .removexattr = gfs2_removexattr, | |
1264 | }; | |
1265 |