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Commit | Line | Data |
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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3a8a9a10 | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
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 | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
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/uaccess.h> |
23 | ||
24 | #include "gfs2.h" | |
5c676f6d SW |
25 | #include "lm_interface.h" |
26 | #include "incore.h" | |
b3b94faa DT |
27 | #include "acl.h" |
28 | #include "bmap.h" | |
29 | #include "dir.h" | |
30 | #include "eaops.h" | |
31 | #include "eattr.h" | |
32 | #include "glock.h" | |
33 | #include "inode.h" | |
34 | #include "meta_io.h" | |
35 | #include "ops_dentry.h" | |
36 | #include "ops_inode.h" | |
b3b94faa DT |
37 | #include "quota.h" |
38 | #include "rgrp.h" | |
39 | #include "trans.h" | |
5c676f6d | 40 | #include "util.h" |
b3b94faa DT |
41 | |
42 | /** | |
43 | * gfs2_create - Create a file | |
44 | * @dir: The directory in which to create the file | |
45 | * @dentry: The dentry of the new file | |
46 | * @mode: The mode of the new file | |
47 | * | |
48 | * Returns: errno | |
49 | */ | |
50 | ||
51 | static int gfs2_create(struct inode *dir, struct dentry *dentry, | |
52 | int mode, struct nameidata *nd) | |
53 | { | |
feaa7bba SW |
54 | struct gfs2_inode *dip = GFS2_I(dir); |
55 | struct gfs2_sbd *sdp = GFS2_SB(dir); | |
b3b94faa DT |
56 | struct gfs2_holder ghs[2]; |
57 | struct inode *inode; | |
b3b94faa | 58 | |
b3b94faa DT |
59 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); |
60 | ||
61 | for (;;) { | |
7359a19c SW |
62 | inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode); |
63 | if (!IS_ERR(inode)) { | |
b3b94faa DT |
64 | gfs2_trans_end(sdp); |
65 | if (dip->i_alloc.al_rgd) | |
66 | gfs2_inplace_release(dip); | |
67 | gfs2_quota_unlock(dip); | |
68 | gfs2_alloc_put(dip); | |
69 | gfs2_glock_dq_uninit_m(2, ghs); | |
3a8476dd | 70 | mark_inode_dirty(inode); |
b3b94faa | 71 | break; |
7359a19c | 72 | } else if (PTR_ERR(inode) != -EEXIST || |
b3b94faa DT |
73 | (nd->intent.open.flags & O_EXCL)) { |
74 | gfs2_holder_uninit(ghs); | |
7359a19c | 75 | return PTR_ERR(inode); |
b3b94faa DT |
76 | } |
77 | ||
c752666c SW |
78 | inode = gfs2_lookupi(dir, &dentry->d_name, 0, nd); |
79 | if (inode) { | |
80 | if (!IS_ERR(inode)) { | |
c752666c SW |
81 | gfs2_holder_uninit(ghs); |
82 | break; | |
83 | } else { | |
84 | gfs2_holder_uninit(ghs); | |
85 | return PTR_ERR(inode); | |
86 | } | |
b3b94faa DT |
87 | } |
88 | } | |
89 | ||
b3b94faa | 90 | d_instantiate(dentry, inode); |
b3b94faa DT |
91 | |
92 | return 0; | |
93 | } | |
94 | ||
95 | /** | |
96 | * gfs2_lookup - Look up a filename in a directory and return its inode | |
97 | * @dir: The directory inode | |
98 | * @dentry: The dentry of the new inode | |
99 | * @nd: passed from Linux VFS, ignored by us | |
100 | * | |
101 | * Called by the VFS layer. Lock dir and call gfs2_lookupi() | |
102 | * | |
103 | * Returns: errno | |
104 | */ | |
105 | ||
106 | static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry, | |
107 | struct nameidata *nd) | |
108 | { | |
b3b94faa | 109 | struct inode *inode = NULL; |
b3b94faa | 110 | |
c752666c | 111 | dentry->d_op = &gfs2_dops; |
b3b94faa | 112 | |
c752666c SW |
113 | inode = gfs2_lookupi(dir, &dentry->d_name, 0, nd); |
114 | if (inode && IS_ERR(inode)) | |
115 | return ERR_PTR(PTR_ERR(inode)); | |
b3b94faa DT |
116 | |
117 | if (inode) | |
118 | return d_splice_alias(inode, dentry); | |
119 | d_add(dentry, inode); | |
120 | ||
121 | return NULL; | |
122 | } | |
123 | ||
124 | /** | |
125 | * gfs2_link - Link to a file | |
126 | * @old_dentry: The inode to link | |
127 | * @dir: Add link to this directory | |
128 | * @dentry: The name of the link | |
129 | * | |
130 | * Link the inode in "old_dentry" into the directory "dir" with the | |
131 | * name in "dentry". | |
132 | * | |
133 | * Returns: errno | |
134 | */ | |
135 | ||
136 | static int gfs2_link(struct dentry *old_dentry, struct inode *dir, | |
137 | struct dentry *dentry) | |
138 | { | |
feaa7bba SW |
139 | struct gfs2_inode *dip = GFS2_I(dir); |
140 | struct gfs2_sbd *sdp = GFS2_SB(dir); | |
b3b94faa | 141 | struct inode *inode = old_dentry->d_inode; |
feaa7bba | 142 | struct gfs2_inode *ip = GFS2_I(inode); |
b3b94faa DT |
143 | struct gfs2_holder ghs[2]; |
144 | int alloc_required; | |
145 | int error; | |
146 | ||
b3b94faa DT |
147 | if (S_ISDIR(ip->i_di.di_mode)) |
148 | return -EPERM; | |
149 | ||
150 | gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); | |
151 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); | |
152 | ||
153 | error = gfs2_glock_nq_m(2, ghs); | |
154 | if (error) | |
155 | goto out; | |
156 | ||
faf450ef | 157 | error = permission(dir, MAY_WRITE | MAY_EXEC, NULL); |
b3b94faa DT |
158 | if (error) |
159 | goto out_gunlock; | |
160 | ||
c752666c | 161 | error = gfs2_dir_search(dir, &dentry->d_name, NULL, NULL); |
b3b94faa DT |
162 | switch (error) { |
163 | case -ENOENT: | |
164 | break; | |
165 | case 0: | |
166 | error = -EEXIST; | |
167 | default: | |
168 | goto out_gunlock; | |
169 | } | |
170 | ||
171 | error = -EINVAL; | |
172 | if (!dip->i_di.di_nlink) | |
173 | goto out_gunlock; | |
174 | error = -EFBIG; | |
175 | if (dip->i_di.di_entries == (uint32_t)-1) | |
176 | goto out_gunlock; | |
177 | error = -EPERM; | |
178 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) | |
179 | goto out_gunlock; | |
180 | error = -EINVAL; | |
181 | if (!ip->i_di.di_nlink) | |
182 | goto out_gunlock; | |
183 | error = -EMLINK; | |
184 | if (ip->i_di.di_nlink == (uint32_t)-1) | |
185 | goto out_gunlock; | |
186 | ||
c752666c SW |
187 | alloc_required = error = gfs2_diradd_alloc_required(dir, &dentry->d_name); |
188 | if (error < 0) | |
b3b94faa | 189 | goto out_gunlock; |
c752666c | 190 | error = 0; |
b3b94faa DT |
191 | |
192 | if (alloc_required) { | |
193 | struct gfs2_alloc *al = gfs2_alloc_get(dip); | |
194 | ||
195 | error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE); | |
196 | if (error) | |
197 | goto out_alloc; | |
198 | ||
199 | error = gfs2_quota_check(dip, dip->i_di.di_uid, | |
200 | dip->i_di.di_gid); | |
201 | if (error) | |
202 | goto out_gunlock_q; | |
203 | ||
204 | al->al_requested = sdp->sd_max_dirres; | |
205 | ||
206 | error = gfs2_inplace_reserve(dip); | |
207 | if (error) | |
208 | goto out_gunlock_q; | |
209 | ||
1b50259b | 210 | error = gfs2_trans_begin(sdp, sdp->sd_max_dirres + |
b3b94faa DT |
211 | al->al_rgd->rd_ri.ri_length + |
212 | 2 * RES_DINODE + RES_STATFS + | |
213 | RES_QUOTA, 0); | |
214 | if (error) | |
215 | goto out_ipres; | |
216 | } else { | |
217 | error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF, 0); | |
218 | if (error) | |
219 | goto out_ipres; | |
220 | } | |
221 | ||
c752666c | 222 | error = gfs2_dir_add(dir, &dentry->d_name, &ip->i_num, |
b3b94faa DT |
223 | IF2DT(ip->i_di.di_mode)); |
224 | if (error) | |
225 | goto out_end_trans; | |
226 | ||
227 | error = gfs2_change_nlink(ip, +1); | |
228 | ||
feaa7bba | 229 | out_end_trans: |
b3b94faa DT |
230 | gfs2_trans_end(sdp); |
231 | ||
feaa7bba | 232 | out_ipres: |
b3b94faa DT |
233 | if (alloc_required) |
234 | gfs2_inplace_release(dip); | |
235 | ||
feaa7bba | 236 | out_gunlock_q: |
b3b94faa DT |
237 | if (alloc_required) |
238 | gfs2_quota_unlock(dip); | |
239 | ||
feaa7bba | 240 | out_alloc: |
b3b94faa DT |
241 | if (alloc_required) |
242 | gfs2_alloc_put(dip); | |
243 | ||
feaa7bba | 244 | out_gunlock: |
b3b94faa DT |
245 | gfs2_glock_dq_m(2, ghs); |
246 | ||
feaa7bba | 247 | out: |
b3b94faa DT |
248 | gfs2_holder_uninit(ghs); |
249 | gfs2_holder_uninit(ghs + 1); | |
250 | ||
251 | if (!error) { | |
29937ac6 | 252 | atomic_inc(&inode->i_count); |
b3b94faa DT |
253 | d_instantiate(dentry, inode); |
254 | mark_inode_dirty(inode); | |
255 | } | |
256 | ||
257 | return error; | |
258 | } | |
259 | ||
260 | /** | |
261 | * gfs2_unlink - Unlink a file | |
262 | * @dir: The inode of the directory containing the file to unlink | |
263 | * @dentry: The file itself | |
264 | * | |
265 | * Unlink a file. Call gfs2_unlinki() | |
266 | * | |
267 | * Returns: errno | |
268 | */ | |
269 | ||
270 | static int gfs2_unlink(struct inode *dir, struct dentry *dentry) | |
271 | { | |
feaa7bba SW |
272 | struct gfs2_inode *dip = GFS2_I(dir); |
273 | struct gfs2_sbd *sdp = GFS2_SB(dir); | |
274 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); | |
b3b94faa DT |
275 | struct gfs2_holder ghs[2]; |
276 | int error; | |
277 | ||
b3b94faa DT |
278 | gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); |
279 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); | |
280 | ||
281 | error = gfs2_glock_nq_m(2, ghs); | |
282 | if (error) | |
283 | goto out; | |
284 | ||
285 | error = gfs2_unlink_ok(dip, &dentry->d_name, ip); | |
286 | if (error) | |
287 | goto out_gunlock; | |
288 | ||
feaa7bba | 289 | error = gfs2_trans_begin(sdp, 2*RES_DINODE + RES_LEAF + RES_RG_BIT, 0); |
b3b94faa DT |
290 | if (error) |
291 | goto out_gunlock; | |
292 | ||
feaa7bba SW |
293 | error = gfs2_dir_del(dip, &dentry->d_name); |
294 | if (error) | |
295 | goto out_end_trans; | |
b3b94faa | 296 | |
feaa7bba | 297 | error = gfs2_change_nlink(ip, -1); |
b3b94faa | 298 | |
feaa7bba SW |
299 | out_end_trans: |
300 | gfs2_trans_end(sdp); | |
301 | out_gunlock: | |
b3b94faa | 302 | gfs2_glock_dq_m(2, ghs); |
feaa7bba | 303 | out: |
b3b94faa DT |
304 | gfs2_holder_uninit(ghs); |
305 | gfs2_holder_uninit(ghs + 1); | |
b3b94faa DT |
306 | return error; |
307 | } | |
308 | ||
309 | /** | |
310 | * gfs2_symlink - Create a symlink | |
311 | * @dir: The directory to create the symlink in | |
312 | * @dentry: The dentry to put the symlink in | |
313 | * @symname: The thing which the link points to | |
314 | * | |
315 | * Returns: errno | |
316 | */ | |
317 | ||
318 | static int gfs2_symlink(struct inode *dir, struct dentry *dentry, | |
319 | const char *symname) | |
320 | { | |
feaa7bba SW |
321 | struct gfs2_inode *dip = GFS2_I(dir), *ip; |
322 | struct gfs2_sbd *sdp = GFS2_SB(dir); | |
b3b94faa DT |
323 | struct gfs2_holder ghs[2]; |
324 | struct inode *inode; | |
325 | struct buffer_head *dibh; | |
326 | int size; | |
327 | int error; | |
328 | ||
b3b94faa DT |
329 | /* Must be stuffed with a null terminator for gfs2_follow_link() */ |
330 | size = strlen(symname); | |
331 | if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1) | |
332 | return -ENAMETOOLONG; | |
333 | ||
334 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); | |
335 | ||
7359a19c SW |
336 | inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO); |
337 | if (IS_ERR(inode)) { | |
b3b94faa | 338 | gfs2_holder_uninit(ghs); |
7359a19c | 339 | return PTR_ERR(inode); |
b3b94faa DT |
340 | } |
341 | ||
5c676f6d | 342 | ip = ghs[1].gh_gl->gl_object; |
b3b94faa DT |
343 | |
344 | ip->i_di.di_size = size; | |
345 | ||
346 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
347 | ||
348 | if (!gfs2_assert_withdraw(sdp, !error)) { | |
349 | gfs2_dinode_out(&ip->i_di, dibh->b_data); | |
350 | memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname, | |
351 | size); | |
352 | brelse(dibh); | |
353 | } | |
354 | ||
355 | gfs2_trans_end(sdp); | |
356 | if (dip->i_alloc.al_rgd) | |
357 | gfs2_inplace_release(dip); | |
358 | gfs2_quota_unlock(dip); | |
359 | gfs2_alloc_put(dip); | |
360 | ||
361 | gfs2_glock_dq_uninit_m(2, ghs); | |
362 | ||
b3b94faa DT |
363 | d_instantiate(dentry, inode); |
364 | mark_inode_dirty(inode); | |
365 | ||
366 | return 0; | |
367 | } | |
368 | ||
369 | /** | |
370 | * gfs2_mkdir - Make a directory | |
371 | * @dir: The parent directory of the new one | |
372 | * @dentry: The dentry of the new directory | |
373 | * @mode: The mode of the new directory | |
374 | * | |
375 | * Returns: errno | |
376 | */ | |
377 | ||
378 | static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode) | |
379 | { | |
feaa7bba SW |
380 | struct gfs2_inode *dip = GFS2_I(dir), *ip; |
381 | struct gfs2_sbd *sdp = GFS2_SB(dir); | |
b3b94faa DT |
382 | struct gfs2_holder ghs[2]; |
383 | struct inode *inode; | |
384 | struct buffer_head *dibh; | |
385 | int error; | |
386 | ||
b3b94faa DT |
387 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); |
388 | ||
7359a19c SW |
389 | inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode); |
390 | if (IS_ERR(inode)) { | |
b3b94faa | 391 | gfs2_holder_uninit(ghs); |
7359a19c | 392 | return PTR_ERR(inode); |
b3b94faa DT |
393 | } |
394 | ||
5c676f6d | 395 | ip = ghs[1].gh_gl->gl_object; |
b3b94faa DT |
396 | |
397 | ip->i_di.di_nlink = 2; | |
398 | ip->i_di.di_size = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); | |
399 | ip->i_di.di_flags |= GFS2_DIF_JDATA; | |
400 | ip->i_di.di_payload_format = GFS2_FORMAT_DE; | |
401 | ip->i_di.di_entries = 2; | |
402 | ||
403 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
404 | ||
405 | if (!gfs2_assert_withdraw(sdp, !error)) { | |
406 | struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data; | |
c752666c | 407 | struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1); |
71b86f56 | 408 | struct qstr str; |
b3b94faa | 409 | |
71b86f56 | 410 | gfs2_str2qstr(&str, "."); |
c752666c SW |
411 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
412 | gfs2_qstr2dirent(&str, GFS2_DIRENT_SIZE(str.len), dent); | |
b3b94faa | 413 | dent->de_inum = di->di_num; /* already GFS2 endian */ |
b3b94faa | 414 | dent->de_type = DT_DIR; |
b3b94faa DT |
415 | di->di_entries = cpu_to_be32(1); |
416 | ||
71b86f56 | 417 | gfs2_str2qstr(&str, ".."); |
c752666c SW |
418 | dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1)); |
419 | gfs2_qstr2dirent(&str, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent); | |
b3b94faa DT |
420 | |
421 | gfs2_inum_out(&dip->i_num, (char *) &dent->de_inum); | |
b3b94faa | 422 | dent->de_type = DT_DIR; |
b3b94faa DT |
423 | |
424 | gfs2_dinode_out(&ip->i_di, (char *)di); | |
425 | ||
426 | brelse(dibh); | |
427 | } | |
428 | ||
429 | error = gfs2_change_nlink(dip, +1); | |
430 | gfs2_assert_withdraw(sdp, !error); /* dip already pinned */ | |
431 | ||
432 | gfs2_trans_end(sdp); | |
433 | if (dip->i_alloc.al_rgd) | |
434 | gfs2_inplace_release(dip); | |
435 | gfs2_quota_unlock(dip); | |
436 | gfs2_alloc_put(dip); | |
437 | ||
438 | gfs2_glock_dq_uninit_m(2, ghs); | |
439 | ||
b3b94faa DT |
440 | d_instantiate(dentry, inode); |
441 | mark_inode_dirty(inode); | |
442 | ||
443 | return 0; | |
444 | } | |
445 | ||
446 | /** | |
447 | * gfs2_rmdir - Remove a directory | |
448 | * @dir: The parent directory of the directory to be removed | |
449 | * @dentry: The dentry of the directory to remove | |
450 | * | |
451 | * Remove a directory. Call gfs2_rmdiri() | |
452 | * | |
453 | * Returns: errno | |
454 | */ | |
455 | ||
456 | static int gfs2_rmdir(struct inode *dir, struct dentry *dentry) | |
457 | { | |
feaa7bba SW |
458 | struct gfs2_inode *dip = GFS2_I(dir); |
459 | struct gfs2_sbd *sdp = GFS2_SB(dir); | |
460 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); | |
b3b94faa DT |
461 | struct gfs2_holder ghs[2]; |
462 | int error; | |
463 | ||
b3b94faa DT |
464 | gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); |
465 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); | |
466 | ||
467 | error = gfs2_glock_nq_m(2, ghs); | |
468 | if (error) | |
469 | goto out; | |
470 | ||
471 | error = gfs2_unlink_ok(dip, &dentry->d_name, ip); | |
472 | if (error) | |
473 | goto out_gunlock; | |
474 | ||
475 | if (ip->i_di.di_entries < 2) { | |
476 | if (gfs2_consist_inode(ip)) | |
477 | gfs2_dinode_print(&ip->i_di); | |
478 | error = -EIO; | |
479 | goto out_gunlock; | |
480 | } | |
481 | if (ip->i_di.di_entries > 2) { | |
482 | error = -ENOTEMPTY; | |
483 | goto out_gunlock; | |
484 | } | |
485 | ||
feaa7bba | 486 | error = gfs2_trans_begin(sdp, 2 * RES_DINODE + 3 * RES_LEAF + RES_RG_BIT, 0); |
b3b94faa DT |
487 | if (error) |
488 | goto out_gunlock; | |
489 | ||
feaa7bba | 490 | error = gfs2_rmdiri(dip, &dentry->d_name, ip); |
b3b94faa DT |
491 | |
492 | gfs2_trans_end(sdp); | |
493 | ||
494 | out_gunlock: | |
495 | gfs2_glock_dq_m(2, ghs); | |
496 | ||
497 | out: | |
498 | gfs2_holder_uninit(ghs); | |
499 | gfs2_holder_uninit(ghs + 1); | |
500 | ||
b3b94faa DT |
501 | return error; |
502 | } | |
503 | ||
504 | /** | |
505 | * gfs2_mknod - Make a special file | |
506 | * @dir: The directory in which the special file will reside | |
507 | * @dentry: The dentry of the special file | |
508 | * @mode: The mode of the special file | |
509 | * @rdev: The device specification of the special file | |
510 | * | |
511 | */ | |
512 | ||
513 | static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode, | |
514 | dev_t dev) | |
515 | { | |
feaa7bba SW |
516 | struct gfs2_inode *dip = GFS2_I(dir), *ip; |
517 | struct gfs2_sbd *sdp = GFS2_SB(dir); | |
b3b94faa DT |
518 | struct gfs2_holder ghs[2]; |
519 | struct inode *inode; | |
520 | struct buffer_head *dibh; | |
521 | uint32_t major = 0, minor = 0; | |
522 | int error; | |
523 | ||
b3b94faa DT |
524 | switch (mode & S_IFMT) { |
525 | case S_IFBLK: | |
526 | case S_IFCHR: | |
527 | major = MAJOR(dev); | |
528 | minor = MINOR(dev); | |
529 | break; | |
530 | case S_IFIFO: | |
531 | case S_IFSOCK: | |
532 | break; | |
533 | default: | |
534 | return -EOPNOTSUPP; | |
535 | }; | |
536 | ||
537 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); | |
538 | ||
7359a19c SW |
539 | inode = gfs2_createi(ghs, &dentry->d_name, mode); |
540 | if (IS_ERR(inode)) { | |
b3b94faa | 541 | gfs2_holder_uninit(ghs); |
7359a19c | 542 | return PTR_ERR(inode); |
b3b94faa DT |
543 | } |
544 | ||
5c676f6d | 545 | ip = ghs[1].gh_gl->gl_object; |
b3b94faa DT |
546 | |
547 | ip->i_di.di_major = major; | |
548 | ip->i_di.di_minor = minor; | |
549 | ||
550 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
551 | ||
552 | if (!gfs2_assert_withdraw(sdp, !error)) { | |
553 | gfs2_dinode_out(&ip->i_di, dibh->b_data); | |
554 | brelse(dibh); | |
555 | } | |
556 | ||
557 | gfs2_trans_end(sdp); | |
558 | if (dip->i_alloc.al_rgd) | |
559 | gfs2_inplace_release(dip); | |
560 | gfs2_quota_unlock(dip); | |
561 | gfs2_alloc_put(dip); | |
562 | ||
563 | gfs2_glock_dq_uninit_m(2, ghs); | |
564 | ||
b3b94faa DT |
565 | d_instantiate(dentry, inode); |
566 | mark_inode_dirty(inode); | |
567 | ||
568 | return 0; | |
569 | } | |
570 | ||
571 | /** | |
572 | * gfs2_rename - Rename a file | |
573 | * @odir: Parent directory of old file name | |
574 | * @odentry: The old dentry of the file | |
575 | * @ndir: Parent directory of new file name | |
576 | * @ndentry: The new dentry of the file | |
577 | * | |
578 | * Returns: errno | |
579 | */ | |
580 | ||
581 | static int gfs2_rename(struct inode *odir, struct dentry *odentry, | |
582 | struct inode *ndir, struct dentry *ndentry) | |
583 | { | |
feaa7bba SW |
584 | struct gfs2_inode *odip = GFS2_I(odir); |
585 | struct gfs2_inode *ndip = GFS2_I(ndir); | |
586 | struct gfs2_inode *ip = GFS2_I(odentry->d_inode); | |
b3b94faa | 587 | struct gfs2_inode *nip = NULL; |
feaa7bba | 588 | struct gfs2_sbd *sdp = GFS2_SB(odir); |
b3b94faa DT |
589 | struct gfs2_holder ghs[4], r_gh; |
590 | unsigned int num_gh; | |
591 | int dir_rename = 0; | |
592 | int alloc_required; | |
593 | unsigned int x; | |
594 | int error; | |
595 | ||
b3b94faa | 596 | if (ndentry->d_inode) { |
feaa7bba | 597 | nip = GFS2_I(ndentry->d_inode); |
b3b94faa DT |
598 | if (ip == nip) |
599 | return 0; | |
600 | } | |
601 | ||
b3b94faa DT |
602 | /* Make sure we aren't trying to move a dirctory into it's subdir */ |
603 | ||
604 | if (S_ISDIR(ip->i_di.di_mode) && odip != ndip) { | |
605 | dir_rename = 1; | |
606 | ||
607 | error = gfs2_glock_nq_init(sdp->sd_rename_gl, | |
608 | LM_ST_EXCLUSIVE, 0, | |
609 | &r_gh); | |
610 | if (error) | |
611 | goto out; | |
612 | ||
613 | error = gfs2_ok_to_move(ip, ndip); | |
614 | if (error) | |
615 | goto out_gunlock_r; | |
616 | } | |
617 | ||
d9d1ca30 | 618 | num_gh = 1; |
b3b94faa | 619 | gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); |
d9d1ca30 SW |
620 | if (odip != ndip) { |
621 | gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); | |
622 | num_gh++; | |
623 | } | |
624 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); | |
625 | num_gh++; | |
b3b94faa | 626 | |
d9d1ca30 SW |
627 | if (nip) { |
628 | gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); | |
629 | num_gh++; | |
630 | } | |
b3b94faa DT |
631 | |
632 | error = gfs2_glock_nq_m(num_gh, ghs); | |
633 | if (error) | |
634 | goto out_uninit; | |
635 | ||
636 | /* Check out the old directory */ | |
637 | ||
638 | error = gfs2_unlink_ok(odip, &odentry->d_name, ip); | |
639 | if (error) | |
640 | goto out_gunlock; | |
641 | ||
642 | /* Check out the new directory */ | |
643 | ||
644 | if (nip) { | |
645 | error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip); | |
646 | if (error) | |
647 | goto out_gunlock; | |
648 | ||
649 | if (S_ISDIR(nip->i_di.di_mode)) { | |
650 | if (nip->i_di.di_entries < 2) { | |
651 | if (gfs2_consist_inode(nip)) | |
652 | gfs2_dinode_print(&nip->i_di); | |
653 | error = -EIO; | |
654 | goto out_gunlock; | |
655 | } | |
656 | if (nip->i_di.di_entries > 2) { | |
657 | error = -ENOTEMPTY; | |
658 | goto out_gunlock; | |
659 | } | |
660 | } | |
661 | } else { | |
faf450ef | 662 | error = permission(ndir, MAY_WRITE | MAY_EXEC, NULL); |
b3b94faa DT |
663 | if (error) |
664 | goto out_gunlock; | |
665 | ||
c752666c | 666 | error = gfs2_dir_search(ndir, &ndentry->d_name, NULL, NULL); |
b3b94faa DT |
667 | switch (error) { |
668 | case -ENOENT: | |
669 | error = 0; | |
670 | break; | |
671 | case 0: | |
672 | error = -EEXIST; | |
673 | default: | |
674 | goto out_gunlock; | |
675 | }; | |
676 | ||
677 | if (odip != ndip) { | |
678 | if (!ndip->i_di.di_nlink) { | |
679 | error = -EINVAL; | |
680 | goto out_gunlock; | |
681 | } | |
682 | if (ndip->i_di.di_entries == (uint32_t)-1) { | |
683 | error = -EFBIG; | |
684 | goto out_gunlock; | |
685 | } | |
686 | if (S_ISDIR(ip->i_di.di_mode) && | |
687 | ndip->i_di.di_nlink == (uint32_t)-1) { | |
688 | error = -EMLINK; | |
689 | goto out_gunlock; | |
690 | } | |
691 | } | |
692 | } | |
693 | ||
694 | /* Check out the dir to be renamed */ | |
695 | ||
696 | if (dir_rename) { | |
faf450ef | 697 | error = permission(odentry->d_inode, MAY_WRITE, NULL); |
b3b94faa DT |
698 | if (error) |
699 | goto out_gunlock; | |
700 | } | |
701 | ||
c752666c SW |
702 | alloc_required = error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name); |
703 | if (error < 0) | |
b3b94faa | 704 | goto out_gunlock; |
c752666c | 705 | error = 0; |
b3b94faa DT |
706 | |
707 | if (alloc_required) { | |
708 | struct gfs2_alloc *al = gfs2_alloc_get(ndip); | |
709 | ||
710 | error = gfs2_quota_lock(ndip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE); | |
711 | if (error) | |
712 | goto out_alloc; | |
713 | ||
714 | error = gfs2_quota_check(ndip, ndip->i_di.di_uid, | |
715 | ndip->i_di.di_gid); | |
716 | if (error) | |
717 | goto out_gunlock_q; | |
718 | ||
719 | al->al_requested = sdp->sd_max_dirres; | |
720 | ||
721 | error = gfs2_inplace_reserve(ndip); | |
722 | if (error) | |
723 | goto out_gunlock_q; | |
724 | ||
fe1bdedc | 725 | error = gfs2_trans_begin(sdp, sdp->sd_max_dirres + |
b3b94faa DT |
726 | al->al_rgd->rd_ri.ri_length + |
727 | 4 * RES_DINODE + 4 * RES_LEAF + | |
feaa7bba | 728 | RES_STATFS + RES_QUOTA, 0); |
b3b94faa DT |
729 | if (error) |
730 | goto out_ipreserv; | |
731 | } else { | |
732 | error = gfs2_trans_begin(sdp, 4 * RES_DINODE + | |
feaa7bba | 733 | 5 * RES_LEAF, 0); |
b3b94faa DT |
734 | if (error) |
735 | goto out_gunlock; | |
736 | } | |
737 | ||
738 | /* Remove the target file, if it exists */ | |
739 | ||
740 | if (nip) { | |
741 | if (S_ISDIR(nip->i_di.di_mode)) | |
feaa7bba SW |
742 | error = gfs2_rmdiri(ndip, &ndentry->d_name, nip); |
743 | else { | |
744 | error = gfs2_dir_del(ndip, &ndentry->d_name); | |
745 | if (error) | |
746 | goto out_end_trans; | |
747 | error = gfs2_change_nlink(nip, -1); | |
748 | } | |
b3b94faa DT |
749 | if (error) |
750 | goto out_end_trans; | |
751 | } | |
752 | ||
753 | if (dir_rename) { | |
754 | struct qstr name; | |
71b86f56 | 755 | gfs2_str2qstr(&name, ".."); |
b3b94faa DT |
756 | |
757 | error = gfs2_change_nlink(ndip, +1); | |
758 | if (error) | |
759 | goto out_end_trans; | |
760 | error = gfs2_change_nlink(odip, -1); | |
761 | if (error) | |
762 | goto out_end_trans; | |
763 | ||
764 | error = gfs2_dir_mvino(ip, &name, &ndip->i_num, DT_DIR); | |
765 | if (error) | |
766 | goto out_end_trans; | |
767 | } else { | |
768 | struct buffer_head *dibh; | |
769 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
770 | if (error) | |
771 | goto out_end_trans; | |
772 | ip->i_di.di_ctime = get_seconds(); | |
d4e9c4c3 | 773 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
b3b94faa DT |
774 | gfs2_dinode_out(&ip->i_di, dibh->b_data); |
775 | brelse(dibh); | |
776 | } | |
777 | ||
778 | error = gfs2_dir_del(odip, &odentry->d_name); | |
779 | if (error) | |
780 | goto out_end_trans; | |
781 | ||
c752666c | 782 | error = gfs2_dir_add(ndir, &ndentry->d_name, &ip->i_num, |
b3b94faa DT |
783 | IF2DT(ip->i_di.di_mode)); |
784 | if (error) | |
785 | goto out_end_trans; | |
786 | ||
feaa7bba | 787 | out_end_trans: |
b3b94faa | 788 | gfs2_trans_end(sdp); |
feaa7bba | 789 | out_ipreserv: |
b3b94faa DT |
790 | if (alloc_required) |
791 | gfs2_inplace_release(ndip); | |
feaa7bba | 792 | out_gunlock_q: |
b3b94faa DT |
793 | if (alloc_required) |
794 | gfs2_quota_unlock(ndip); | |
feaa7bba | 795 | out_alloc: |
b3b94faa DT |
796 | if (alloc_required) |
797 | gfs2_alloc_put(ndip); | |
feaa7bba | 798 | out_gunlock: |
b3b94faa | 799 | gfs2_glock_dq_m(num_gh, ghs); |
feaa7bba | 800 | out_uninit: |
b3b94faa DT |
801 | for (x = 0; x < num_gh; x++) |
802 | gfs2_holder_uninit(ghs + x); | |
feaa7bba | 803 | out_gunlock_r: |
b3b94faa DT |
804 | if (dir_rename) |
805 | gfs2_glock_dq_uninit(&r_gh); | |
feaa7bba | 806 | out: |
b3b94faa DT |
807 | return error; |
808 | } | |
809 | ||
810 | /** | |
811 | * gfs2_readlink - Read the value of a symlink | |
812 | * @dentry: the symlink | |
813 | * @buf: the buffer to read the symlink data into | |
814 | * @size: the size of the buffer | |
815 | * | |
816 | * Returns: errno | |
817 | */ | |
818 | ||
819 | static int gfs2_readlink(struct dentry *dentry, char __user *user_buf, | |
820 | int user_size) | |
821 | { | |
feaa7bba | 822 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); |
b3b94faa DT |
823 | char array[GFS2_FAST_NAME_SIZE], *buf = array; |
824 | unsigned int len = GFS2_FAST_NAME_SIZE; | |
825 | int error; | |
826 | ||
b3b94faa DT |
827 | error = gfs2_readlinki(ip, &buf, &len); |
828 | if (error) | |
829 | return error; | |
830 | ||
831 | if (user_size > len - 1) | |
832 | user_size = len - 1; | |
833 | ||
834 | if (copy_to_user(user_buf, buf, user_size)) | |
835 | error = -EFAULT; | |
836 | else | |
837 | error = user_size; | |
838 | ||
839 | if (buf != array) | |
840 | kfree(buf); | |
841 | ||
842 | return error; | |
843 | } | |
844 | ||
845 | /** | |
846 | * gfs2_follow_link - Follow a symbolic link | |
847 | * @dentry: The dentry of the link | |
848 | * @nd: Data that we pass to vfs_follow_link() | |
849 | * | |
850 | * This can handle symlinks of any size. It is optimised for symlinks | |
851 | * under GFS2_FAST_NAME_SIZE. | |
852 | * | |
853 | * Returns: 0 on success or error code | |
854 | */ | |
855 | ||
856 | static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd) | |
857 | { | |
feaa7bba | 858 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); |
b3b94faa DT |
859 | char array[GFS2_FAST_NAME_SIZE], *buf = array; |
860 | unsigned int len = GFS2_FAST_NAME_SIZE; | |
861 | int error; | |
862 | ||
b3b94faa DT |
863 | error = gfs2_readlinki(ip, &buf, &len); |
864 | if (!error) { | |
865 | error = vfs_follow_link(nd, buf); | |
866 | if (buf != array) | |
867 | kfree(buf); | |
868 | } | |
869 | ||
870 | return ERR_PTR(error); | |
871 | } | |
872 | ||
873 | /** | |
874 | * gfs2_permission - | |
875 | * @inode: | |
876 | * @mask: | |
877 | * @nd: passed from Linux VFS, ignored by us | |
878 | * | |
879 | * Returns: errno | |
880 | */ | |
881 | ||
882 | static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd) | |
883 | { | |
feaa7bba | 884 | struct gfs2_inode *ip = GFS2_I(inode); |
b3b94faa DT |
885 | struct gfs2_holder i_gh; |
886 | int error; | |
887 | ||
b3b94faa DT |
888 | if (ip->i_vn == ip->i_gl->gl_vn) |
889 | return generic_permission(inode, mask, gfs2_check_acl); | |
890 | ||
faf450ef | 891 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); |
b3b94faa DT |
892 | if (!error) { |
893 | error = generic_permission(inode, mask, gfs2_check_acl_locked); | |
894 | gfs2_glock_dq_uninit(&i_gh); | |
895 | } | |
896 | ||
897 | return error; | |
898 | } | |
899 | ||
900 | static int setattr_size(struct inode *inode, struct iattr *attr) | |
901 | { | |
feaa7bba | 902 | struct gfs2_inode *ip = GFS2_I(inode); |
b3b94faa DT |
903 | int error; |
904 | ||
905 | if (attr->ia_size != ip->i_di.di_size) { | |
906 | error = vmtruncate(inode, attr->ia_size); | |
907 | if (error) | |
908 | return error; | |
909 | } | |
910 | ||
aa6a85a9 | 911 | error = gfs2_truncatei(ip, attr->ia_size); |
b3b94faa DT |
912 | if (error) |
913 | return error; | |
914 | ||
915 | return error; | |
916 | } | |
917 | ||
918 | static int setattr_chown(struct inode *inode, struct iattr *attr) | |
919 | { | |
feaa7bba SW |
920 | struct gfs2_inode *ip = GFS2_I(inode); |
921 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
b3b94faa DT |
922 | struct buffer_head *dibh; |
923 | uint32_t ouid, ogid, nuid, ngid; | |
924 | int error; | |
925 | ||
926 | ouid = ip->i_di.di_uid; | |
927 | ogid = ip->i_di.di_gid; | |
928 | nuid = attr->ia_uid; | |
929 | ngid = attr->ia_gid; | |
930 | ||
931 | if (!(attr->ia_valid & ATTR_UID) || ouid == nuid) | |
932 | ouid = nuid = NO_QUOTA_CHANGE; | |
933 | if (!(attr->ia_valid & ATTR_GID) || ogid == ngid) | |
934 | ogid = ngid = NO_QUOTA_CHANGE; | |
935 | ||
936 | gfs2_alloc_get(ip); | |
937 | ||
938 | error = gfs2_quota_lock(ip, nuid, ngid); | |
939 | if (error) | |
940 | goto out_alloc; | |
941 | ||
942 | if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) { | |
943 | error = gfs2_quota_check(ip, nuid, ngid); | |
944 | if (error) | |
945 | goto out_gunlock_q; | |
946 | } | |
947 | ||
948 | error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0); | |
949 | if (error) | |
950 | goto out_gunlock_q; | |
951 | ||
952 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
953 | if (error) | |
954 | goto out_end_trans; | |
955 | ||
956 | error = inode_setattr(inode, attr); | |
957 | gfs2_assert_warn(sdp, !error); | |
958 | gfs2_inode_attr_out(ip); | |
959 | ||
d4e9c4c3 | 960 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
b3b94faa DT |
961 | gfs2_dinode_out(&ip->i_di, dibh->b_data); |
962 | brelse(dibh); | |
963 | ||
964 | if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) { | |
af18ddb8 SW |
965 | gfs2_quota_change(ip, -ip->i_di.di_blocks, ouid, ogid); |
966 | gfs2_quota_change(ip, ip->i_di.di_blocks, nuid, ngid); | |
b3b94faa DT |
967 | } |
968 | ||
969 | out_end_trans: | |
970 | gfs2_trans_end(sdp); | |
971 | ||
972 | out_gunlock_q: | |
973 | gfs2_quota_unlock(ip); | |
974 | ||
975 | out_alloc: | |
976 | gfs2_alloc_put(ip); | |
977 | ||
978 | return error; | |
979 | } | |
980 | ||
981 | /** | |
982 | * gfs2_setattr - Change attributes on an inode | |
983 | * @dentry: The dentry which is changing | |
984 | * @attr: The structure describing the change | |
985 | * | |
986 | * The VFS layer wants to change one or more of an inodes attributes. Write | |
987 | * that change out to disk. | |
988 | * | |
989 | * Returns: errno | |
990 | */ | |
991 | ||
992 | static int gfs2_setattr(struct dentry *dentry, struct iattr *attr) | |
993 | { | |
994 | struct inode *inode = dentry->d_inode; | |
feaa7bba | 995 | struct gfs2_inode *ip = GFS2_I(inode); |
b3b94faa DT |
996 | struct gfs2_holder i_gh; |
997 | int error; | |
998 | ||
b3b94faa DT |
999 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh); |
1000 | if (error) | |
1001 | return error; | |
1002 | ||
1003 | error = -EPERM; | |
1004 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) | |
1005 | goto out; | |
1006 | ||
1007 | error = inode_change_ok(inode, attr); | |
1008 | if (error) | |
1009 | goto out; | |
1010 | ||
1011 | if (attr->ia_valid & ATTR_SIZE) | |
1012 | error = setattr_size(inode, attr); | |
1013 | else if (attr->ia_valid & (ATTR_UID | ATTR_GID)) | |
1014 | error = setattr_chown(inode, attr); | |
1015 | else if ((attr->ia_valid & ATTR_MODE) && IS_POSIXACL(inode)) | |
1016 | error = gfs2_acl_chmod(ip, attr); | |
1017 | else | |
1018 | error = gfs2_setattr_simple(ip, attr); | |
1019 | ||
1020 | out: | |
1021 | gfs2_glock_dq_uninit(&i_gh); | |
1022 | ||
1023 | if (!error) | |
1024 | mark_inode_dirty(inode); | |
1025 | ||
1026 | return error; | |
1027 | } | |
1028 | ||
1029 | /** | |
1030 | * gfs2_getattr - Read out an inode's attributes | |
1031 | * @mnt: ? | |
1032 | * @dentry: The dentry to stat | |
1033 | * @stat: The inode's stats | |
1034 | * | |
1035 | * Returns: errno | |
1036 | */ | |
1037 | ||
1038 | static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry, | |
1039 | struct kstat *stat) | |
1040 | { | |
1041 | struct inode *inode = dentry->d_inode; | |
feaa7bba | 1042 | struct gfs2_inode *ip = GFS2_I(inode); |
b3b94faa DT |
1043 | struct gfs2_holder gh; |
1044 | int error; | |
1045 | ||
b3b94faa DT |
1046 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); |
1047 | if (!error) { | |
1048 | generic_fillattr(inode, stat); | |
1049 | gfs2_glock_dq_uninit(&gh); | |
1050 | } | |
1051 | ||
1052 | return error; | |
1053 | } | |
1054 | ||
1055 | static int gfs2_setxattr(struct dentry *dentry, const char *name, | |
1056 | const void *data, size_t size, int flags) | |
1057 | { | |
feaa7bba | 1058 | struct inode *inode = dentry->d_inode; |
b3b94faa DT |
1059 | struct gfs2_ea_request er; |
1060 | ||
b3b94faa DT |
1061 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
1062 | er.er_type = gfs2_ea_name2type(name, &er.er_name); | |
1063 | if (er.er_type == GFS2_EATYPE_UNUSED) | |
1064 | return -EOPNOTSUPP; | |
1065 | er.er_data = (char *)data; | |
1066 | er.er_name_len = strlen(er.er_name); | |
1067 | er.er_data_len = size; | |
1068 | er.er_flags = flags; | |
1069 | ||
feaa7bba | 1070 | gfs2_assert_warn(GFS2_SB(inode), !(er.er_flags & GFS2_ERF_MODE)); |
b3b94faa | 1071 | |
feaa7bba | 1072 | return gfs2_ea_set(GFS2_I(inode), &er); |
b3b94faa DT |
1073 | } |
1074 | ||
1075 | static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name, | |
1076 | void *data, size_t size) | |
1077 | { | |
1078 | struct gfs2_ea_request er; | |
1079 | ||
b3b94faa DT |
1080 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
1081 | er.er_type = gfs2_ea_name2type(name, &er.er_name); | |
1082 | if (er.er_type == GFS2_EATYPE_UNUSED) | |
1083 | return -EOPNOTSUPP; | |
1084 | er.er_data = data; | |
1085 | er.er_name_len = strlen(er.er_name); | |
1086 | er.er_data_len = size; | |
1087 | ||
feaa7bba | 1088 | return gfs2_ea_get(GFS2_I(dentry->d_inode), &er); |
b3b94faa DT |
1089 | } |
1090 | ||
1091 | static ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size) | |
1092 | { | |
1093 | struct gfs2_ea_request er; | |
1094 | ||
b3b94faa DT |
1095 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
1096 | er.er_data = (size) ? buffer : NULL; | |
1097 | er.er_data_len = size; | |
1098 | ||
feaa7bba | 1099 | return gfs2_ea_list(GFS2_I(dentry->d_inode), &er); |
b3b94faa DT |
1100 | } |
1101 | ||
1102 | static int gfs2_removexattr(struct dentry *dentry, const char *name) | |
1103 | { | |
1104 | struct gfs2_ea_request er; | |
1105 | ||
b3b94faa DT |
1106 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
1107 | er.er_type = gfs2_ea_name2type(name, &er.er_name); | |
1108 | if (er.er_type == GFS2_EATYPE_UNUSED) | |
1109 | return -EOPNOTSUPP; | |
1110 | er.er_name_len = strlen(er.er_name); | |
1111 | ||
feaa7bba | 1112 | return gfs2_ea_remove(GFS2_I(dentry->d_inode), &er); |
b3b94faa DT |
1113 | } |
1114 | ||
1115 | struct inode_operations gfs2_file_iops = { | |
1116 | .permission = gfs2_permission, | |
1117 | .setattr = gfs2_setattr, | |
1118 | .getattr = gfs2_getattr, | |
1119 | .setxattr = gfs2_setxattr, | |
1120 | .getxattr = gfs2_getxattr, | |
1121 | .listxattr = gfs2_listxattr, | |
1122 | .removexattr = gfs2_removexattr, | |
1123 | }; | |
1124 | ||
1125 | struct inode_operations gfs2_dev_iops = { | |
1126 | .permission = gfs2_permission, | |
1127 | .setattr = gfs2_setattr, | |
1128 | .getattr = gfs2_getattr, | |
1129 | .setxattr = gfs2_setxattr, | |
1130 | .getxattr = gfs2_getxattr, | |
1131 | .listxattr = gfs2_listxattr, | |
1132 | .removexattr = gfs2_removexattr, | |
1133 | }; | |
1134 | ||
1135 | struct inode_operations gfs2_dir_iops = { | |
1136 | .create = gfs2_create, | |
1137 | .lookup = gfs2_lookup, | |
1138 | .link = gfs2_link, | |
1139 | .unlink = gfs2_unlink, | |
1140 | .symlink = gfs2_symlink, | |
1141 | .mkdir = gfs2_mkdir, | |
1142 | .rmdir = gfs2_rmdir, | |
1143 | .mknod = gfs2_mknod, | |
1144 | .rename = gfs2_rename, | |
1145 | .permission = gfs2_permission, | |
1146 | .setattr = gfs2_setattr, | |
1147 | .getattr = gfs2_getattr, | |
1148 | .setxattr = gfs2_setxattr, | |
1149 | .getxattr = gfs2_getxattr, | |
1150 | .listxattr = gfs2_listxattr, | |
1151 | .removexattr = gfs2_removexattr, | |
1152 | }; | |
1153 | ||
1154 | struct inode_operations gfs2_symlink_iops = { | |
1155 | .readlink = gfs2_readlink, | |
1156 | .follow_link = gfs2_follow_link, | |
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 |