Commit | Line | Data |
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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> | |
5c676f6d | 20 | #include <linux/gfs2_ondisk.h> |
71b86f56 | 21 | #include <linux/crc32.h> |
b3b94faa DT |
22 | #include <asm/semaphore.h> |
23 | #include <asm/uaccess.h> | |
24 | ||
25 | #include "gfs2.h" | |
5c676f6d SW |
26 | #include "lm_interface.h" |
27 | #include "incore.h" | |
b3b94faa DT |
28 | #include "acl.h" |
29 | #include "bmap.h" | |
30 | #include "dir.h" | |
31 | #include "eaops.h" | |
32 | #include "eattr.h" | |
33 | #include "glock.h" | |
34 | #include "inode.h" | |
35 | #include "meta_io.h" | |
36 | #include "ops_dentry.h" | |
37 | #include "ops_inode.h" | |
38 | #include "page.h" | |
39 | #include "quota.h" | |
40 | #include "rgrp.h" | |
41 | #include "trans.h" | |
42 | #include "unlinked.h" | |
5c676f6d | 43 | #include "util.h" |
b3b94faa DT |
44 | |
45 | /** | |
46 | * gfs2_create - Create a file | |
47 | * @dir: The directory in which to create the file | |
48 | * @dentry: The dentry of the new file | |
49 | * @mode: The mode of the new file | |
50 | * | |
51 | * Returns: errno | |
52 | */ | |
53 | ||
54 | static int gfs2_create(struct inode *dir, struct dentry *dentry, | |
55 | int mode, struct nameidata *nd) | |
56 | { | |
5c676f6d | 57 | struct gfs2_inode *dip = dir->u.generic_ip; |
b3b94faa DT |
58 | struct gfs2_sbd *sdp = dip->i_sbd; |
59 | struct gfs2_holder ghs[2]; | |
60 | struct inode *inode; | |
61 | int new = 1; | |
b3b94faa | 62 | |
b3b94faa DT |
63 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); |
64 | ||
65 | for (;;) { | |
7359a19c SW |
66 | inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode); |
67 | if (!IS_ERR(inode)) { | |
b3b94faa DT |
68 | gfs2_trans_end(sdp); |
69 | if (dip->i_alloc.al_rgd) | |
70 | gfs2_inplace_release(dip); | |
71 | gfs2_quota_unlock(dip); | |
72 | gfs2_alloc_put(dip); | |
73 | gfs2_glock_dq_uninit_m(2, ghs); | |
74 | break; | |
7359a19c | 75 | } else if (PTR_ERR(inode) != -EEXIST || |
b3b94faa DT |
76 | (nd->intent.open.flags & O_EXCL)) { |
77 | gfs2_holder_uninit(ghs); | |
7359a19c | 78 | return PTR_ERR(inode); |
b3b94faa DT |
79 | } |
80 | ||
c752666c SW |
81 | inode = gfs2_lookupi(dir, &dentry->d_name, 0, nd); |
82 | if (inode) { | |
83 | if (!IS_ERR(inode)) { | |
84 | new = 0; | |
85 | gfs2_holder_uninit(ghs); | |
86 | break; | |
87 | } else { | |
88 | gfs2_holder_uninit(ghs); | |
89 | return PTR_ERR(inode); | |
90 | } | |
b3b94faa DT |
91 | } |
92 | } | |
93 | ||
b3b94faa DT |
94 | d_instantiate(dentry, inode); |
95 | if (new) | |
96 | mark_inode_dirty(inode); | |
97 | ||
98 | return 0; | |
99 | } | |
100 | ||
101 | /** | |
102 | * gfs2_lookup - Look up a filename in a directory and return its inode | |
103 | * @dir: The directory inode | |
104 | * @dentry: The dentry of the new inode | |
105 | * @nd: passed from Linux VFS, ignored by us | |
106 | * | |
107 | * Called by the VFS layer. Lock dir and call gfs2_lookupi() | |
108 | * | |
109 | * Returns: errno | |
110 | */ | |
111 | ||
112 | static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry, | |
113 | struct nameidata *nd) | |
114 | { | |
b3b94faa | 115 | struct inode *inode = NULL; |
b3b94faa | 116 | |
c752666c | 117 | dentry->d_op = &gfs2_dops; |
b3b94faa | 118 | |
c752666c SW |
119 | inode = gfs2_lookupi(dir, &dentry->d_name, 0, nd); |
120 | if (inode && IS_ERR(inode)) | |
121 | return ERR_PTR(PTR_ERR(inode)); | |
b3b94faa DT |
122 | |
123 | if (inode) | |
124 | return d_splice_alias(inode, dentry); | |
125 | d_add(dentry, inode); | |
126 | ||
127 | return NULL; | |
128 | } | |
129 | ||
130 | /** | |
131 | * gfs2_link - Link to a file | |
132 | * @old_dentry: The inode to link | |
133 | * @dir: Add link to this directory | |
134 | * @dentry: The name of the link | |
135 | * | |
136 | * Link the inode in "old_dentry" into the directory "dir" with the | |
137 | * name in "dentry". | |
138 | * | |
139 | * Returns: errno | |
140 | */ | |
141 | ||
142 | static int gfs2_link(struct dentry *old_dentry, struct inode *dir, | |
143 | struct dentry *dentry) | |
144 | { | |
5c676f6d | 145 | struct gfs2_inode *dip = dir->u.generic_ip; |
b3b94faa DT |
146 | struct gfs2_sbd *sdp = dip->i_sbd; |
147 | struct inode *inode = old_dentry->d_inode; | |
5c676f6d | 148 | struct gfs2_inode *ip = inode->u.generic_ip; |
b3b94faa DT |
149 | struct gfs2_holder ghs[2]; |
150 | int alloc_required; | |
151 | int error; | |
152 | ||
b3b94faa DT |
153 | if (S_ISDIR(ip->i_di.di_mode)) |
154 | return -EPERM; | |
155 | ||
156 | gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); | |
157 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); | |
158 | ||
159 | error = gfs2_glock_nq_m(2, ghs); | |
160 | if (error) | |
161 | goto out; | |
162 | ||
163 | error = gfs2_repermission(dir, MAY_WRITE | MAY_EXEC, NULL); | |
164 | if (error) | |
165 | goto out_gunlock; | |
166 | ||
c752666c | 167 | error = gfs2_dir_search(dir, &dentry->d_name, NULL, NULL); |
b3b94faa DT |
168 | switch (error) { |
169 | case -ENOENT: | |
170 | break; | |
171 | case 0: | |
172 | error = -EEXIST; | |
173 | default: | |
174 | goto out_gunlock; | |
175 | } | |
176 | ||
177 | error = -EINVAL; | |
178 | if (!dip->i_di.di_nlink) | |
179 | goto out_gunlock; | |
180 | error = -EFBIG; | |
181 | if (dip->i_di.di_entries == (uint32_t)-1) | |
182 | goto out_gunlock; | |
183 | error = -EPERM; | |
184 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) | |
185 | goto out_gunlock; | |
186 | error = -EINVAL; | |
187 | if (!ip->i_di.di_nlink) | |
188 | goto out_gunlock; | |
189 | error = -EMLINK; | |
190 | if (ip->i_di.di_nlink == (uint32_t)-1) | |
191 | goto out_gunlock; | |
192 | ||
c752666c SW |
193 | alloc_required = error = gfs2_diradd_alloc_required(dir, &dentry->d_name); |
194 | if (error < 0) | |
b3b94faa | 195 | goto out_gunlock; |
c752666c | 196 | error = 0; |
b3b94faa DT |
197 | |
198 | if (alloc_required) { | |
199 | struct gfs2_alloc *al = gfs2_alloc_get(dip); | |
200 | ||
201 | error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE); | |
202 | if (error) | |
203 | goto out_alloc; | |
204 | ||
205 | error = gfs2_quota_check(dip, dip->i_di.di_uid, | |
206 | dip->i_di.di_gid); | |
207 | if (error) | |
208 | goto out_gunlock_q; | |
209 | ||
210 | al->al_requested = sdp->sd_max_dirres; | |
211 | ||
212 | error = gfs2_inplace_reserve(dip); | |
213 | if (error) | |
214 | goto out_gunlock_q; | |
215 | ||
216 | error = gfs2_trans_begin(sdp, | |
217 | sdp->sd_max_dirres + | |
218 | al->al_rgd->rd_ri.ri_length + | |
219 | 2 * RES_DINODE + RES_STATFS + | |
220 | RES_QUOTA, 0); | |
221 | if (error) | |
222 | goto out_ipres; | |
223 | } else { | |
224 | error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF, 0); | |
225 | if (error) | |
226 | goto out_ipres; | |
227 | } | |
228 | ||
c752666c | 229 | error = gfs2_dir_add(dir, &dentry->d_name, &ip->i_num, |
b3b94faa DT |
230 | IF2DT(ip->i_di.di_mode)); |
231 | if (error) | |
232 | goto out_end_trans; | |
233 | ||
234 | error = gfs2_change_nlink(ip, +1); | |
235 | ||
236 | out_end_trans: | |
237 | gfs2_trans_end(sdp); | |
238 | ||
239 | out_ipres: | |
240 | if (alloc_required) | |
241 | gfs2_inplace_release(dip); | |
242 | ||
243 | out_gunlock_q: | |
244 | if (alloc_required) | |
245 | gfs2_quota_unlock(dip); | |
246 | ||
247 | out_alloc: | |
248 | if (alloc_required) | |
249 | gfs2_alloc_put(dip); | |
250 | ||
251 | out_gunlock: | |
252 | gfs2_glock_dq_m(2, ghs); | |
253 | ||
254 | out: | |
255 | gfs2_holder_uninit(ghs); | |
256 | gfs2_holder_uninit(ghs + 1); | |
257 | ||
258 | if (!error) { | |
259 | atomic_inc(&inode->i_count); | |
260 | d_instantiate(dentry, inode); | |
261 | mark_inode_dirty(inode); | |
262 | } | |
263 | ||
264 | return error; | |
265 | } | |
266 | ||
267 | /** | |
268 | * gfs2_unlink - Unlink a file | |
269 | * @dir: The inode of the directory containing the file to unlink | |
270 | * @dentry: The file itself | |
271 | * | |
272 | * Unlink a file. Call gfs2_unlinki() | |
273 | * | |
274 | * Returns: errno | |
275 | */ | |
276 | ||
277 | static int gfs2_unlink(struct inode *dir, struct dentry *dentry) | |
278 | { | |
5c676f6d | 279 | struct gfs2_inode *dip = dir->u.generic_ip; |
b3b94faa | 280 | struct gfs2_sbd *sdp = dip->i_sbd; |
5c676f6d | 281 | struct gfs2_inode *ip = dentry->d_inode->u.generic_ip; |
b3b94faa DT |
282 | struct gfs2_unlinked *ul; |
283 | struct gfs2_holder ghs[2]; | |
284 | int error; | |
285 | ||
b3b94faa DT |
286 | error = gfs2_unlinked_get(sdp, &ul); |
287 | if (error) | |
288 | return error; | |
289 | ||
290 | gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); | |
291 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); | |
292 | ||
293 | error = gfs2_glock_nq_m(2, ghs); | |
294 | if (error) | |
295 | goto out; | |
296 | ||
297 | error = gfs2_unlink_ok(dip, &dentry->d_name, ip); | |
298 | if (error) | |
299 | goto out_gunlock; | |
300 | ||
301 | error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF + | |
302 | RES_UNLINKED, 0); | |
303 | if (error) | |
304 | goto out_gunlock; | |
305 | ||
306 | error = gfs2_unlinki(dip, &dentry->d_name, ip,ul); | |
307 | ||
308 | gfs2_trans_end(sdp); | |
309 | ||
310 | out_gunlock: | |
311 | gfs2_glock_dq_m(2, ghs); | |
312 | ||
313 | out: | |
314 | gfs2_holder_uninit(ghs); | |
315 | gfs2_holder_uninit(ghs + 1); | |
316 | ||
317 | gfs2_unlinked_put(sdp, ul); | |
318 | ||
319 | return error; | |
320 | } | |
321 | ||
322 | /** | |
323 | * gfs2_symlink - Create a symlink | |
324 | * @dir: The directory to create the symlink in | |
325 | * @dentry: The dentry to put the symlink in | |
326 | * @symname: The thing which the link points to | |
327 | * | |
328 | * Returns: errno | |
329 | */ | |
330 | ||
331 | static int gfs2_symlink(struct inode *dir, struct dentry *dentry, | |
332 | const char *symname) | |
333 | { | |
5c676f6d | 334 | struct gfs2_inode *dip = dir->u.generic_ip, *ip; |
b3b94faa DT |
335 | struct gfs2_sbd *sdp = dip->i_sbd; |
336 | struct gfs2_holder ghs[2]; | |
337 | struct inode *inode; | |
338 | struct buffer_head *dibh; | |
339 | int size; | |
340 | int error; | |
341 | ||
b3b94faa DT |
342 | /* Must be stuffed with a null terminator for gfs2_follow_link() */ |
343 | size = strlen(symname); | |
344 | if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1) | |
345 | return -ENAMETOOLONG; | |
346 | ||
347 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); | |
348 | ||
7359a19c SW |
349 | inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO); |
350 | if (IS_ERR(inode)) { | |
b3b94faa | 351 | gfs2_holder_uninit(ghs); |
7359a19c | 352 | return PTR_ERR(inode); |
b3b94faa DT |
353 | } |
354 | ||
5c676f6d | 355 | ip = ghs[1].gh_gl->gl_object; |
b3b94faa DT |
356 | |
357 | ip->i_di.di_size = size; | |
358 | ||
359 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
360 | ||
361 | if (!gfs2_assert_withdraw(sdp, !error)) { | |
362 | gfs2_dinode_out(&ip->i_di, dibh->b_data); | |
363 | memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname, | |
364 | size); | |
365 | brelse(dibh); | |
366 | } | |
367 | ||
368 | gfs2_trans_end(sdp); | |
369 | if (dip->i_alloc.al_rgd) | |
370 | gfs2_inplace_release(dip); | |
371 | gfs2_quota_unlock(dip); | |
372 | gfs2_alloc_put(dip); | |
373 | ||
374 | gfs2_glock_dq_uninit_m(2, ghs); | |
375 | ||
b3b94faa DT |
376 | d_instantiate(dentry, inode); |
377 | mark_inode_dirty(inode); | |
378 | ||
379 | return 0; | |
380 | } | |
381 | ||
382 | /** | |
383 | * gfs2_mkdir - Make a directory | |
384 | * @dir: The parent directory of the new one | |
385 | * @dentry: The dentry of the new directory | |
386 | * @mode: The mode of the new directory | |
387 | * | |
388 | * Returns: errno | |
389 | */ | |
390 | ||
391 | static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode) | |
392 | { | |
5c676f6d | 393 | struct gfs2_inode *dip = dir->u.generic_ip, *ip; |
b3b94faa DT |
394 | struct gfs2_sbd *sdp = dip->i_sbd; |
395 | struct gfs2_holder ghs[2]; | |
396 | struct inode *inode; | |
397 | struct buffer_head *dibh; | |
398 | int error; | |
399 | ||
b3b94faa DT |
400 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); |
401 | ||
7359a19c SW |
402 | inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode); |
403 | if (IS_ERR(inode)) { | |
b3b94faa | 404 | gfs2_holder_uninit(ghs); |
7359a19c | 405 | return PTR_ERR(inode); |
b3b94faa DT |
406 | } |
407 | ||
5c676f6d | 408 | ip = ghs[1].gh_gl->gl_object; |
b3b94faa DT |
409 | |
410 | ip->i_di.di_nlink = 2; | |
411 | ip->i_di.di_size = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); | |
412 | ip->i_di.di_flags |= GFS2_DIF_JDATA; | |
413 | ip->i_di.di_payload_format = GFS2_FORMAT_DE; | |
414 | ip->i_di.di_entries = 2; | |
415 | ||
416 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
417 | ||
418 | if (!gfs2_assert_withdraw(sdp, !error)) { | |
419 | struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data; | |
c752666c | 420 | struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1); |
71b86f56 | 421 | struct qstr str; |
b3b94faa | 422 | |
71b86f56 | 423 | gfs2_str2qstr(&str, "."); |
c752666c SW |
424 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
425 | gfs2_qstr2dirent(&str, GFS2_DIRENT_SIZE(str.len), dent); | |
b3b94faa | 426 | dent->de_inum = di->di_num; /* already GFS2 endian */ |
b3b94faa | 427 | dent->de_type = DT_DIR; |
b3b94faa DT |
428 | di->di_entries = cpu_to_be32(1); |
429 | ||
71b86f56 | 430 | gfs2_str2qstr(&str, ".."); |
c752666c SW |
431 | dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1)); |
432 | gfs2_qstr2dirent(&str, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent); | |
b3b94faa DT |
433 | |
434 | gfs2_inum_out(&dip->i_num, (char *) &dent->de_inum); | |
b3b94faa | 435 | dent->de_type = DT_DIR; |
b3b94faa DT |
436 | |
437 | gfs2_dinode_out(&ip->i_di, (char *)di); | |
438 | ||
439 | brelse(dibh); | |
440 | } | |
441 | ||
442 | error = gfs2_change_nlink(dip, +1); | |
443 | gfs2_assert_withdraw(sdp, !error); /* dip already pinned */ | |
444 | ||
445 | gfs2_trans_end(sdp); | |
446 | if (dip->i_alloc.al_rgd) | |
447 | gfs2_inplace_release(dip); | |
448 | gfs2_quota_unlock(dip); | |
449 | gfs2_alloc_put(dip); | |
450 | ||
451 | gfs2_glock_dq_uninit_m(2, ghs); | |
452 | ||
b3b94faa DT |
453 | d_instantiate(dentry, inode); |
454 | mark_inode_dirty(inode); | |
455 | ||
456 | return 0; | |
457 | } | |
458 | ||
459 | /** | |
460 | * gfs2_rmdir - Remove a directory | |
461 | * @dir: The parent directory of the directory to be removed | |
462 | * @dentry: The dentry of the directory to remove | |
463 | * | |
464 | * Remove a directory. Call gfs2_rmdiri() | |
465 | * | |
466 | * Returns: errno | |
467 | */ | |
468 | ||
469 | static int gfs2_rmdir(struct inode *dir, struct dentry *dentry) | |
470 | { | |
5c676f6d | 471 | struct gfs2_inode *dip = dir->u.generic_ip; |
b3b94faa | 472 | struct gfs2_sbd *sdp = dip->i_sbd; |
5c676f6d | 473 | struct gfs2_inode *ip = dentry->d_inode->u.generic_ip; |
b3b94faa DT |
474 | struct gfs2_unlinked *ul; |
475 | struct gfs2_holder ghs[2]; | |
476 | int error; | |
477 | ||
b3b94faa DT |
478 | error = gfs2_unlinked_get(sdp, &ul); |
479 | if (error) | |
480 | return error; | |
481 | ||
482 | gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); | |
483 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); | |
484 | ||
485 | error = gfs2_glock_nq_m(2, ghs); | |
486 | if (error) | |
487 | goto out; | |
488 | ||
489 | error = gfs2_unlink_ok(dip, &dentry->d_name, ip); | |
490 | if (error) | |
491 | goto out_gunlock; | |
492 | ||
493 | if (ip->i_di.di_entries < 2) { | |
494 | if (gfs2_consist_inode(ip)) | |
495 | gfs2_dinode_print(&ip->i_di); | |
496 | error = -EIO; | |
497 | goto out_gunlock; | |
498 | } | |
499 | if (ip->i_di.di_entries > 2) { | |
500 | error = -ENOTEMPTY; | |
501 | goto out_gunlock; | |
502 | } | |
503 | ||
504 | error = gfs2_trans_begin(sdp, 2 * RES_DINODE + 3 * RES_LEAF + | |
505 | RES_UNLINKED, 0); | |
506 | if (error) | |
507 | goto out_gunlock; | |
508 | ||
509 | error = gfs2_rmdiri(dip, &dentry->d_name, ip, ul); | |
510 | ||
511 | gfs2_trans_end(sdp); | |
512 | ||
513 | out_gunlock: | |
514 | gfs2_glock_dq_m(2, ghs); | |
515 | ||
516 | out: | |
517 | gfs2_holder_uninit(ghs); | |
518 | gfs2_holder_uninit(ghs + 1); | |
519 | ||
520 | gfs2_unlinked_put(sdp, ul); | |
521 | ||
522 | return error; | |
523 | } | |
524 | ||
525 | /** | |
526 | * gfs2_mknod - Make a special file | |
527 | * @dir: The directory in which the special file will reside | |
528 | * @dentry: The dentry of the special file | |
529 | * @mode: The mode of the special file | |
530 | * @rdev: The device specification of the special file | |
531 | * | |
532 | */ | |
533 | ||
534 | static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode, | |
535 | dev_t dev) | |
536 | { | |
5c676f6d | 537 | struct gfs2_inode *dip = dir->u.generic_ip, *ip; |
b3b94faa DT |
538 | struct gfs2_sbd *sdp = dip->i_sbd; |
539 | struct gfs2_holder ghs[2]; | |
540 | struct inode *inode; | |
541 | struct buffer_head *dibh; | |
542 | uint32_t major = 0, minor = 0; | |
543 | int error; | |
544 | ||
b3b94faa DT |
545 | switch (mode & S_IFMT) { |
546 | case S_IFBLK: | |
547 | case S_IFCHR: | |
548 | major = MAJOR(dev); | |
549 | minor = MINOR(dev); | |
550 | break; | |
551 | case S_IFIFO: | |
552 | case S_IFSOCK: | |
553 | break; | |
554 | default: | |
555 | return -EOPNOTSUPP; | |
556 | }; | |
557 | ||
558 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); | |
559 | ||
7359a19c SW |
560 | inode = gfs2_createi(ghs, &dentry->d_name, mode); |
561 | if (IS_ERR(inode)) { | |
b3b94faa | 562 | gfs2_holder_uninit(ghs); |
7359a19c | 563 | return PTR_ERR(inode); |
b3b94faa DT |
564 | } |
565 | ||
5c676f6d | 566 | ip = ghs[1].gh_gl->gl_object; |
b3b94faa DT |
567 | |
568 | ip->i_di.di_major = major; | |
569 | ip->i_di.di_minor = minor; | |
570 | ||
571 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
572 | ||
573 | if (!gfs2_assert_withdraw(sdp, !error)) { | |
574 | gfs2_dinode_out(&ip->i_di, dibh->b_data); | |
575 | brelse(dibh); | |
576 | } | |
577 | ||
578 | gfs2_trans_end(sdp); | |
579 | if (dip->i_alloc.al_rgd) | |
580 | gfs2_inplace_release(dip); | |
581 | gfs2_quota_unlock(dip); | |
582 | gfs2_alloc_put(dip); | |
583 | ||
584 | gfs2_glock_dq_uninit_m(2, ghs); | |
585 | ||
b3b94faa DT |
586 | d_instantiate(dentry, inode); |
587 | mark_inode_dirty(inode); | |
588 | ||
589 | return 0; | |
590 | } | |
591 | ||
592 | /** | |
593 | * gfs2_rename - Rename a file | |
594 | * @odir: Parent directory of old file name | |
595 | * @odentry: The old dentry of the file | |
596 | * @ndir: Parent directory of new file name | |
597 | * @ndentry: The new dentry of the file | |
598 | * | |
599 | * Returns: errno | |
600 | */ | |
601 | ||
602 | static int gfs2_rename(struct inode *odir, struct dentry *odentry, | |
603 | struct inode *ndir, struct dentry *ndentry) | |
604 | { | |
5c676f6d SW |
605 | struct gfs2_inode *odip = odir->u.generic_ip; |
606 | struct gfs2_inode *ndip = ndir->u.generic_ip; | |
607 | struct gfs2_inode *ip = odentry->d_inode->u.generic_ip; | |
b3b94faa DT |
608 | struct gfs2_inode *nip = NULL; |
609 | struct gfs2_sbd *sdp = odip->i_sbd; | |
610 | struct gfs2_unlinked *ul; | |
611 | struct gfs2_holder ghs[4], r_gh; | |
612 | unsigned int num_gh; | |
613 | int dir_rename = 0; | |
614 | int alloc_required; | |
615 | unsigned int x; | |
616 | int error; | |
617 | ||
b3b94faa | 618 | if (ndentry->d_inode) { |
5c676f6d | 619 | nip = ndentry->d_inode->u.generic_ip; |
b3b94faa DT |
620 | if (ip == nip) |
621 | return 0; | |
622 | } | |
623 | ||
624 | error = gfs2_unlinked_get(sdp, &ul); | |
625 | if (error) | |
626 | return error; | |
627 | ||
628 | /* Make sure we aren't trying to move a dirctory into it's subdir */ | |
629 | ||
630 | if (S_ISDIR(ip->i_di.di_mode) && odip != ndip) { | |
631 | dir_rename = 1; | |
632 | ||
633 | error = gfs2_glock_nq_init(sdp->sd_rename_gl, | |
634 | LM_ST_EXCLUSIVE, 0, | |
635 | &r_gh); | |
636 | if (error) | |
637 | goto out; | |
638 | ||
639 | error = gfs2_ok_to_move(ip, ndip); | |
640 | if (error) | |
641 | goto out_gunlock_r; | |
642 | } | |
643 | ||
644 | gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); | |
645 | gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); | |
646 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 2); | |
647 | num_gh = 3; | |
648 | ||
649 | if (nip) | |
650 | gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh++); | |
651 | ||
652 | error = gfs2_glock_nq_m(num_gh, ghs); | |
653 | if (error) | |
654 | goto out_uninit; | |
655 | ||
656 | /* Check out the old directory */ | |
657 | ||
658 | error = gfs2_unlink_ok(odip, &odentry->d_name, ip); | |
659 | if (error) | |
660 | goto out_gunlock; | |
661 | ||
662 | /* Check out the new directory */ | |
663 | ||
664 | if (nip) { | |
665 | error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip); | |
666 | if (error) | |
667 | goto out_gunlock; | |
668 | ||
669 | if (S_ISDIR(nip->i_di.di_mode)) { | |
670 | if (nip->i_di.di_entries < 2) { | |
671 | if (gfs2_consist_inode(nip)) | |
672 | gfs2_dinode_print(&nip->i_di); | |
673 | error = -EIO; | |
674 | goto out_gunlock; | |
675 | } | |
676 | if (nip->i_di.di_entries > 2) { | |
677 | error = -ENOTEMPTY; | |
678 | goto out_gunlock; | |
679 | } | |
680 | } | |
681 | } else { | |
682 | error = gfs2_repermission(ndir, MAY_WRITE | MAY_EXEC, NULL); | |
683 | if (error) | |
684 | goto out_gunlock; | |
685 | ||
c752666c | 686 | error = gfs2_dir_search(ndir, &ndentry->d_name, NULL, NULL); |
b3b94faa DT |
687 | switch (error) { |
688 | case -ENOENT: | |
689 | error = 0; | |
690 | break; | |
691 | case 0: | |
692 | error = -EEXIST; | |
693 | default: | |
694 | goto out_gunlock; | |
695 | }; | |
696 | ||
697 | if (odip != ndip) { | |
698 | if (!ndip->i_di.di_nlink) { | |
699 | error = -EINVAL; | |
700 | goto out_gunlock; | |
701 | } | |
702 | if (ndip->i_di.di_entries == (uint32_t)-1) { | |
703 | error = -EFBIG; | |
704 | goto out_gunlock; | |
705 | } | |
706 | if (S_ISDIR(ip->i_di.di_mode) && | |
707 | ndip->i_di.di_nlink == (uint32_t)-1) { | |
708 | error = -EMLINK; | |
709 | goto out_gunlock; | |
710 | } | |
711 | } | |
712 | } | |
713 | ||
714 | /* Check out the dir to be renamed */ | |
715 | ||
716 | if (dir_rename) { | |
717 | error = gfs2_repermission(odentry->d_inode, MAY_WRITE, NULL); | |
718 | if (error) | |
719 | goto out_gunlock; | |
720 | } | |
721 | ||
c752666c SW |
722 | alloc_required = error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name); |
723 | if (error < 0) | |
b3b94faa | 724 | goto out_gunlock; |
c752666c | 725 | error = 0; |
b3b94faa DT |
726 | |
727 | if (alloc_required) { | |
728 | struct gfs2_alloc *al = gfs2_alloc_get(ndip); | |
729 | ||
730 | error = gfs2_quota_lock(ndip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE); | |
731 | if (error) | |
732 | goto out_alloc; | |
733 | ||
734 | error = gfs2_quota_check(ndip, ndip->i_di.di_uid, | |
735 | ndip->i_di.di_gid); | |
736 | if (error) | |
737 | goto out_gunlock_q; | |
738 | ||
739 | al->al_requested = sdp->sd_max_dirres; | |
740 | ||
741 | error = gfs2_inplace_reserve(ndip); | |
742 | if (error) | |
743 | goto out_gunlock_q; | |
744 | ||
fe1bdedc | 745 | error = gfs2_trans_begin(sdp, sdp->sd_max_dirres + |
b3b94faa DT |
746 | al->al_rgd->rd_ri.ri_length + |
747 | 4 * RES_DINODE + 4 * RES_LEAF + | |
748 | RES_UNLINKED + RES_STATFS + | |
749 | RES_QUOTA, 0); | |
750 | if (error) | |
751 | goto out_ipreserv; | |
752 | } else { | |
753 | error = gfs2_trans_begin(sdp, 4 * RES_DINODE + | |
754 | 5 * RES_LEAF + | |
755 | RES_UNLINKED, 0); | |
756 | if (error) | |
757 | goto out_gunlock; | |
758 | } | |
759 | ||
760 | /* Remove the target file, if it exists */ | |
761 | ||
762 | if (nip) { | |
763 | if (S_ISDIR(nip->i_di.di_mode)) | |
764 | error = gfs2_rmdiri(ndip, &ndentry->d_name, nip, ul); | |
765 | else | |
766 | error = gfs2_unlinki(ndip, &ndentry->d_name, nip, ul); | |
767 | if (error) | |
768 | goto out_end_trans; | |
769 | } | |
770 | ||
771 | if (dir_rename) { | |
772 | struct qstr name; | |
71b86f56 | 773 | gfs2_str2qstr(&name, ".."); |
b3b94faa DT |
774 | |
775 | error = gfs2_change_nlink(ndip, +1); | |
776 | if (error) | |
777 | goto out_end_trans; | |
778 | error = gfs2_change_nlink(odip, -1); | |
779 | if (error) | |
780 | goto out_end_trans; | |
781 | ||
782 | error = gfs2_dir_mvino(ip, &name, &ndip->i_num, DT_DIR); | |
783 | if (error) | |
784 | goto out_end_trans; | |
785 | } else { | |
786 | struct buffer_head *dibh; | |
787 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
788 | if (error) | |
789 | goto out_end_trans; | |
790 | ip->i_di.di_ctime = get_seconds(); | |
d4e9c4c3 | 791 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
b3b94faa DT |
792 | gfs2_dinode_out(&ip->i_di, dibh->b_data); |
793 | brelse(dibh); | |
794 | } | |
795 | ||
796 | error = gfs2_dir_del(odip, &odentry->d_name); | |
797 | if (error) | |
798 | goto out_end_trans; | |
799 | ||
c752666c | 800 | error = gfs2_dir_add(ndir, &ndentry->d_name, &ip->i_num, |
b3b94faa DT |
801 | IF2DT(ip->i_di.di_mode)); |
802 | if (error) | |
803 | goto out_end_trans; | |
804 | ||
805 | out_end_trans: | |
806 | gfs2_trans_end(sdp); | |
807 | ||
808 | out_ipreserv: | |
809 | if (alloc_required) | |
810 | gfs2_inplace_release(ndip); | |
811 | ||
812 | out_gunlock_q: | |
813 | if (alloc_required) | |
814 | gfs2_quota_unlock(ndip); | |
815 | ||
816 | out_alloc: | |
817 | if (alloc_required) | |
818 | gfs2_alloc_put(ndip); | |
819 | ||
820 | out_gunlock: | |
821 | gfs2_glock_dq_m(num_gh, ghs); | |
822 | ||
823 | out_uninit: | |
824 | for (x = 0; x < num_gh; x++) | |
825 | gfs2_holder_uninit(ghs + x); | |
826 | ||
827 | out_gunlock_r: | |
828 | if (dir_rename) | |
829 | gfs2_glock_dq_uninit(&r_gh); | |
830 | ||
831 | out: | |
832 | gfs2_unlinked_put(sdp, ul); | |
833 | ||
834 | return error; | |
835 | } | |
836 | ||
837 | /** | |
838 | * gfs2_readlink - Read the value of a symlink | |
839 | * @dentry: the symlink | |
840 | * @buf: the buffer to read the symlink data into | |
841 | * @size: the size of the buffer | |
842 | * | |
843 | * Returns: errno | |
844 | */ | |
845 | ||
846 | static int gfs2_readlink(struct dentry *dentry, char __user *user_buf, | |
847 | int user_size) | |
848 | { | |
5c676f6d | 849 | struct gfs2_inode *ip = dentry->d_inode->u.generic_ip; |
b3b94faa DT |
850 | char array[GFS2_FAST_NAME_SIZE], *buf = array; |
851 | unsigned int len = GFS2_FAST_NAME_SIZE; | |
852 | int error; | |
853 | ||
b3b94faa DT |
854 | error = gfs2_readlinki(ip, &buf, &len); |
855 | if (error) | |
856 | return error; | |
857 | ||
858 | if (user_size > len - 1) | |
859 | user_size = len - 1; | |
860 | ||
861 | if (copy_to_user(user_buf, buf, user_size)) | |
862 | error = -EFAULT; | |
863 | else | |
864 | error = user_size; | |
865 | ||
866 | if (buf != array) | |
867 | kfree(buf); | |
868 | ||
869 | return error; | |
870 | } | |
871 | ||
872 | /** | |
873 | * gfs2_follow_link - Follow a symbolic link | |
874 | * @dentry: The dentry of the link | |
875 | * @nd: Data that we pass to vfs_follow_link() | |
876 | * | |
877 | * This can handle symlinks of any size. It is optimised for symlinks | |
878 | * under GFS2_FAST_NAME_SIZE. | |
879 | * | |
880 | * Returns: 0 on success or error code | |
881 | */ | |
882 | ||
883 | static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd) | |
884 | { | |
5c676f6d | 885 | struct gfs2_inode *ip = dentry->d_inode->u.generic_ip; |
b3b94faa DT |
886 | char array[GFS2_FAST_NAME_SIZE], *buf = array; |
887 | unsigned int len = GFS2_FAST_NAME_SIZE; | |
888 | int error; | |
889 | ||
b3b94faa DT |
890 | error = gfs2_readlinki(ip, &buf, &len); |
891 | if (!error) { | |
892 | error = vfs_follow_link(nd, buf); | |
893 | if (buf != array) | |
894 | kfree(buf); | |
895 | } | |
896 | ||
897 | return ERR_PTR(error); | |
898 | } | |
899 | ||
900 | /** | |
901 | * gfs2_permission - | |
902 | * @inode: | |
903 | * @mask: | |
904 | * @nd: passed from Linux VFS, ignored by us | |
905 | * | |
906 | * Returns: errno | |
907 | */ | |
908 | ||
909 | static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd) | |
910 | { | |
5c676f6d | 911 | struct gfs2_inode *ip = inode->u.generic_ip; |
b3b94faa DT |
912 | struct gfs2_holder i_gh; |
913 | int error; | |
914 | ||
b3b94faa DT |
915 | if (ip->i_vn == ip->i_gl->gl_vn) |
916 | return generic_permission(inode, mask, gfs2_check_acl); | |
917 | ||
918 | error = gfs2_glock_nq_init(ip->i_gl, | |
919 | LM_ST_SHARED, LM_FLAG_ANY, | |
920 | &i_gh); | |
921 | if (!error) { | |
922 | error = generic_permission(inode, mask, gfs2_check_acl_locked); | |
923 | gfs2_glock_dq_uninit(&i_gh); | |
924 | } | |
925 | ||
926 | return error; | |
927 | } | |
928 | ||
929 | static int setattr_size(struct inode *inode, struct iattr *attr) | |
930 | { | |
5c676f6d | 931 | struct gfs2_inode *ip = inode->u.generic_ip; |
b3b94faa DT |
932 | int error; |
933 | ||
934 | if (attr->ia_size != ip->i_di.di_size) { | |
935 | error = vmtruncate(inode, attr->ia_size); | |
936 | if (error) | |
937 | return error; | |
938 | } | |
939 | ||
aa6a85a9 | 940 | error = gfs2_truncatei(ip, attr->ia_size); |
b3b94faa DT |
941 | if (error) |
942 | return error; | |
943 | ||
944 | return error; | |
945 | } | |
946 | ||
947 | static int setattr_chown(struct inode *inode, struct iattr *attr) | |
948 | { | |
5c676f6d | 949 | struct gfs2_inode *ip = inode->u.generic_ip; |
b3b94faa DT |
950 | struct gfs2_sbd *sdp = ip->i_sbd; |
951 | struct buffer_head *dibh; | |
952 | uint32_t ouid, ogid, nuid, ngid; | |
953 | int error; | |
954 | ||
955 | ouid = ip->i_di.di_uid; | |
956 | ogid = ip->i_di.di_gid; | |
957 | nuid = attr->ia_uid; | |
958 | ngid = attr->ia_gid; | |
959 | ||
960 | if (!(attr->ia_valid & ATTR_UID) || ouid == nuid) | |
961 | ouid = nuid = NO_QUOTA_CHANGE; | |
962 | if (!(attr->ia_valid & ATTR_GID) || ogid == ngid) | |
963 | ogid = ngid = NO_QUOTA_CHANGE; | |
964 | ||
965 | gfs2_alloc_get(ip); | |
966 | ||
967 | error = gfs2_quota_lock(ip, nuid, ngid); | |
968 | if (error) | |
969 | goto out_alloc; | |
970 | ||
971 | if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) { | |
972 | error = gfs2_quota_check(ip, nuid, ngid); | |
973 | if (error) | |
974 | goto out_gunlock_q; | |
975 | } | |
976 | ||
977 | error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0); | |
978 | if (error) | |
979 | goto out_gunlock_q; | |
980 | ||
981 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
982 | if (error) | |
983 | goto out_end_trans; | |
984 | ||
985 | error = inode_setattr(inode, attr); | |
986 | gfs2_assert_warn(sdp, !error); | |
987 | gfs2_inode_attr_out(ip); | |
988 | ||
d4e9c4c3 | 989 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
b3b94faa DT |
990 | gfs2_dinode_out(&ip->i_di, dibh->b_data); |
991 | brelse(dibh); | |
992 | ||
993 | if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) { | |
994 | gfs2_quota_change(ip, -ip->i_di.di_blocks, | |
995 | ouid, ogid); | |
996 | gfs2_quota_change(ip, ip->i_di.di_blocks, | |
997 | nuid, ngid); | |
998 | } | |
999 | ||
1000 | out_end_trans: | |
1001 | gfs2_trans_end(sdp); | |
1002 | ||
1003 | out_gunlock_q: | |
1004 | gfs2_quota_unlock(ip); | |
1005 | ||
1006 | out_alloc: | |
1007 | gfs2_alloc_put(ip); | |
1008 | ||
1009 | return error; | |
1010 | } | |
1011 | ||
1012 | /** | |
1013 | * gfs2_setattr - Change attributes on an inode | |
1014 | * @dentry: The dentry which is changing | |
1015 | * @attr: The structure describing the change | |
1016 | * | |
1017 | * The VFS layer wants to change one or more of an inodes attributes. Write | |
1018 | * that change out to disk. | |
1019 | * | |
1020 | * Returns: errno | |
1021 | */ | |
1022 | ||
1023 | static int gfs2_setattr(struct dentry *dentry, struct iattr *attr) | |
1024 | { | |
1025 | struct inode *inode = dentry->d_inode; | |
5c676f6d | 1026 | struct gfs2_inode *ip = inode->u.generic_ip; |
b3b94faa DT |
1027 | struct gfs2_holder i_gh; |
1028 | int error; | |
1029 | ||
b3b94faa DT |
1030 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh); |
1031 | if (error) | |
1032 | return error; | |
1033 | ||
1034 | error = -EPERM; | |
1035 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) | |
1036 | goto out; | |
1037 | ||
1038 | error = inode_change_ok(inode, attr); | |
1039 | if (error) | |
1040 | goto out; | |
1041 | ||
1042 | if (attr->ia_valid & ATTR_SIZE) | |
1043 | error = setattr_size(inode, attr); | |
1044 | else if (attr->ia_valid & (ATTR_UID | ATTR_GID)) | |
1045 | error = setattr_chown(inode, attr); | |
1046 | else if ((attr->ia_valid & ATTR_MODE) && IS_POSIXACL(inode)) | |
1047 | error = gfs2_acl_chmod(ip, attr); | |
1048 | else | |
1049 | error = gfs2_setattr_simple(ip, attr); | |
1050 | ||
1051 | out: | |
1052 | gfs2_glock_dq_uninit(&i_gh); | |
1053 | ||
1054 | if (!error) | |
1055 | mark_inode_dirty(inode); | |
1056 | ||
1057 | return error; | |
1058 | } | |
1059 | ||
1060 | /** | |
1061 | * gfs2_getattr - Read out an inode's attributes | |
1062 | * @mnt: ? | |
1063 | * @dentry: The dentry to stat | |
1064 | * @stat: The inode's stats | |
1065 | * | |
1066 | * Returns: errno | |
1067 | */ | |
1068 | ||
1069 | static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry, | |
1070 | struct kstat *stat) | |
1071 | { | |
1072 | struct inode *inode = dentry->d_inode; | |
5c676f6d | 1073 | struct gfs2_inode *ip = inode->u.generic_ip; |
b3b94faa DT |
1074 | struct gfs2_holder gh; |
1075 | int error; | |
1076 | ||
b3b94faa DT |
1077 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); |
1078 | if (!error) { | |
1079 | generic_fillattr(inode, stat); | |
1080 | gfs2_glock_dq_uninit(&gh); | |
1081 | } | |
1082 | ||
1083 | return error; | |
1084 | } | |
1085 | ||
1086 | static int gfs2_setxattr(struct dentry *dentry, const char *name, | |
1087 | const void *data, size_t size, int flags) | |
1088 | { | |
5c676f6d | 1089 | struct gfs2_inode *ip = dentry->d_inode->u.generic_ip; |
b3b94faa DT |
1090 | struct gfs2_ea_request er; |
1091 | ||
b3b94faa DT |
1092 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
1093 | er.er_type = gfs2_ea_name2type(name, &er.er_name); | |
1094 | if (er.er_type == GFS2_EATYPE_UNUSED) | |
1095 | return -EOPNOTSUPP; | |
1096 | er.er_data = (char *)data; | |
1097 | er.er_name_len = strlen(er.er_name); | |
1098 | er.er_data_len = size; | |
1099 | er.er_flags = flags; | |
1100 | ||
1101 | gfs2_assert_warn(ip->i_sbd, !(er.er_flags & GFS2_ERF_MODE)); | |
1102 | ||
1103 | return gfs2_ea_set(ip, &er); | |
1104 | } | |
1105 | ||
1106 | static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name, | |
1107 | void *data, size_t size) | |
1108 | { | |
1109 | struct gfs2_ea_request er; | |
1110 | ||
b3b94faa DT |
1111 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
1112 | er.er_type = gfs2_ea_name2type(name, &er.er_name); | |
1113 | if (er.er_type == GFS2_EATYPE_UNUSED) | |
1114 | return -EOPNOTSUPP; | |
1115 | er.er_data = data; | |
1116 | er.er_name_len = strlen(er.er_name); | |
1117 | er.er_data_len = size; | |
1118 | ||
5c676f6d | 1119 | return gfs2_ea_get(dentry->d_inode->u.generic_ip, &er); |
b3b94faa DT |
1120 | } |
1121 | ||
1122 | static ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size) | |
1123 | { | |
1124 | struct gfs2_ea_request er; | |
1125 | ||
b3b94faa DT |
1126 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
1127 | er.er_data = (size) ? buffer : NULL; | |
1128 | er.er_data_len = size; | |
1129 | ||
5c676f6d | 1130 | return gfs2_ea_list(dentry->d_inode->u.generic_ip, &er); |
b3b94faa DT |
1131 | } |
1132 | ||
1133 | static int gfs2_removexattr(struct dentry *dentry, const char *name) | |
1134 | { | |
1135 | struct gfs2_ea_request er; | |
1136 | ||
b3b94faa DT |
1137 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
1138 | er.er_type = gfs2_ea_name2type(name, &er.er_name); | |
1139 | if (er.er_type == GFS2_EATYPE_UNUSED) | |
1140 | return -EOPNOTSUPP; | |
1141 | er.er_name_len = strlen(er.er_name); | |
1142 | ||
5c676f6d | 1143 | return gfs2_ea_remove(dentry->d_inode->u.generic_ip, &er); |
b3b94faa DT |
1144 | } |
1145 | ||
1146 | struct inode_operations gfs2_file_iops = { | |
1147 | .permission = gfs2_permission, | |
1148 | .setattr = gfs2_setattr, | |
1149 | .getattr = gfs2_getattr, | |
1150 | .setxattr = gfs2_setxattr, | |
1151 | .getxattr = gfs2_getxattr, | |
1152 | .listxattr = gfs2_listxattr, | |
1153 | .removexattr = gfs2_removexattr, | |
1154 | }; | |
1155 | ||
1156 | struct inode_operations gfs2_dev_iops = { | |
1157 | .permission = gfs2_permission, | |
1158 | .setattr = gfs2_setattr, | |
1159 | .getattr = gfs2_getattr, | |
1160 | .setxattr = gfs2_setxattr, | |
1161 | .getxattr = gfs2_getxattr, | |
1162 | .listxattr = gfs2_listxattr, | |
1163 | .removexattr = gfs2_removexattr, | |
1164 | }; | |
1165 | ||
1166 | struct inode_operations gfs2_dir_iops = { | |
1167 | .create = gfs2_create, | |
1168 | .lookup = gfs2_lookup, | |
1169 | .link = gfs2_link, | |
1170 | .unlink = gfs2_unlink, | |
1171 | .symlink = gfs2_symlink, | |
1172 | .mkdir = gfs2_mkdir, | |
1173 | .rmdir = gfs2_rmdir, | |
1174 | .mknod = gfs2_mknod, | |
1175 | .rename = gfs2_rename, | |
1176 | .permission = gfs2_permission, | |
1177 | .setattr = gfs2_setattr, | |
1178 | .getattr = gfs2_getattr, | |
1179 | .setxattr = gfs2_setxattr, | |
1180 | .getxattr = gfs2_getxattr, | |
1181 | .listxattr = gfs2_listxattr, | |
1182 | .removexattr = gfs2_removexattr, | |
1183 | }; | |
1184 | ||
1185 | struct inode_operations gfs2_symlink_iops = { | |
1186 | .readlink = gfs2_readlink, | |
1187 | .follow_link = gfs2_follow_link, | |
1188 | .permission = gfs2_permission, | |
1189 | .setattr = gfs2_setattr, | |
1190 | .getattr = gfs2_getattr, | |
1191 | .setxattr = gfs2_setxattr, | |
1192 | .getxattr = gfs2_getxattr, | |
1193 | .listxattr = gfs2_listxattr, | |
1194 | .removexattr = gfs2_removexattr, | |
1195 | }; | |
1196 |