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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> |
7d308590 | 22 | #include <linux/lm_interface.h> |
b3b94faa DT |
23 | #include <asm/uaccess.h> |
24 | ||
25 | #include "gfs2.h" | |
5c676f6d | 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 (;;) { | |
e7f14f4d | 62 | inode = gfs2_createi(ghs, &dentry->d_name, S_IFREG | mode, 0); |
7359a19c | 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 | ||
b60623c2 | 147 | if (S_ISDIR(inode->i_mode)) |
b3b94faa DT |
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; | |
cd915493 | 175 | if (dip->i_di.di_entries == (u32)-1) |
b3b94faa DT |
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; | |
cd915493 | 184 | if (ip->i_di.di_nlink == (u32)-1) |
b3b94faa DT |
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, |
b60623c2 | 223 | IF2DT(inode->i_mode)); |
b3b94faa DT |
224 | if (error) |
225 | goto out_end_trans; | |
226 | ||
227 | error = gfs2_change_nlink(ip, +1); | |
228 | ||
feaa7bba | 229 | out_end_trans: |
b3b94faa | 230 | gfs2_trans_end(sdp); |
feaa7bba | 231 | out_ipres: |
b3b94faa DT |
232 | if (alloc_required) |
233 | gfs2_inplace_release(dip); | |
feaa7bba | 234 | out_gunlock_q: |
b3b94faa DT |
235 | if (alloc_required) |
236 | gfs2_quota_unlock(dip); | |
feaa7bba | 237 | out_alloc: |
b3b94faa DT |
238 | if (alloc_required) |
239 | gfs2_alloc_put(dip); | |
feaa7bba | 240 | out_gunlock: |
b3b94faa | 241 | gfs2_glock_dq_m(2, ghs); |
feaa7bba | 242 | out: |
b3b94faa DT |
243 | gfs2_holder_uninit(ghs); |
244 | gfs2_holder_uninit(ghs + 1); | |
b3b94faa | 245 | if (!error) { |
29937ac6 | 246 | atomic_inc(&inode->i_count); |
b3b94faa DT |
247 | d_instantiate(dentry, inode); |
248 | mark_inode_dirty(inode); | |
249 | } | |
b3b94faa DT |
250 | return error; |
251 | } | |
252 | ||
253 | /** | |
254 | * gfs2_unlink - Unlink a file | |
255 | * @dir: The inode of the directory containing the file to unlink | |
256 | * @dentry: The file itself | |
257 | * | |
258 | * Unlink a file. Call gfs2_unlinki() | |
259 | * | |
260 | * Returns: errno | |
261 | */ | |
262 | ||
263 | static int gfs2_unlink(struct inode *dir, struct dentry *dentry) | |
264 | { | |
feaa7bba SW |
265 | struct gfs2_inode *dip = GFS2_I(dir); |
266 | struct gfs2_sbd *sdp = GFS2_SB(dir); | |
267 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); | |
b3b94faa DT |
268 | struct gfs2_holder ghs[2]; |
269 | int error; | |
270 | ||
b3b94faa DT |
271 | gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); |
272 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); | |
273 | ||
274 | error = gfs2_glock_nq_m(2, ghs); | |
275 | if (error) | |
276 | goto out; | |
277 | ||
278 | error = gfs2_unlink_ok(dip, &dentry->d_name, ip); | |
279 | if (error) | |
280 | goto out_gunlock; | |
281 | ||
feaa7bba | 282 | error = gfs2_trans_begin(sdp, 2*RES_DINODE + RES_LEAF + RES_RG_BIT, 0); |
b3b94faa DT |
283 | if (error) |
284 | goto out_gunlock; | |
285 | ||
feaa7bba SW |
286 | error = gfs2_dir_del(dip, &dentry->d_name); |
287 | if (error) | |
288 | goto out_end_trans; | |
b3b94faa | 289 | |
feaa7bba | 290 | error = gfs2_change_nlink(ip, -1); |
b3b94faa | 291 | |
feaa7bba SW |
292 | out_end_trans: |
293 | gfs2_trans_end(sdp); | |
294 | out_gunlock: | |
b3b94faa | 295 | gfs2_glock_dq_m(2, ghs); |
feaa7bba | 296 | out: |
b3b94faa DT |
297 | gfs2_holder_uninit(ghs); |
298 | gfs2_holder_uninit(ghs + 1); | |
b3b94faa DT |
299 | return error; |
300 | } | |
301 | ||
302 | /** | |
303 | * gfs2_symlink - Create a symlink | |
304 | * @dir: The directory to create the symlink in | |
305 | * @dentry: The dentry to put the symlink in | |
306 | * @symname: The thing which the link points to | |
307 | * | |
308 | * Returns: errno | |
309 | */ | |
310 | ||
311 | static int gfs2_symlink(struct inode *dir, struct dentry *dentry, | |
312 | const char *symname) | |
313 | { | |
feaa7bba SW |
314 | struct gfs2_inode *dip = GFS2_I(dir), *ip; |
315 | struct gfs2_sbd *sdp = GFS2_SB(dir); | |
b3b94faa DT |
316 | struct gfs2_holder ghs[2]; |
317 | struct inode *inode; | |
318 | struct buffer_head *dibh; | |
319 | int size; | |
320 | int error; | |
321 | ||
b3b94faa DT |
322 | /* Must be stuffed with a null terminator for gfs2_follow_link() */ |
323 | size = strlen(symname); | |
324 | if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1) | |
325 | return -ENAMETOOLONG; | |
326 | ||
327 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); | |
328 | ||
e7f14f4d | 329 | inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO, 0); |
7359a19c | 330 | if (IS_ERR(inode)) { |
b3b94faa | 331 | gfs2_holder_uninit(ghs); |
7359a19c | 332 | return PTR_ERR(inode); |
b3b94faa DT |
333 | } |
334 | ||
5c676f6d | 335 | ip = ghs[1].gh_gl->gl_object; |
b3b94faa DT |
336 | |
337 | ip->i_di.di_size = size; | |
338 | ||
339 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
340 | ||
341 | if (!gfs2_assert_withdraw(sdp, !error)) { | |
539e5d6b | 342 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa DT |
343 | memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname, |
344 | size); | |
345 | brelse(dibh); | |
346 | } | |
347 | ||
348 | gfs2_trans_end(sdp); | |
349 | if (dip->i_alloc.al_rgd) | |
350 | gfs2_inplace_release(dip); | |
351 | gfs2_quota_unlock(dip); | |
352 | gfs2_alloc_put(dip); | |
353 | ||
354 | gfs2_glock_dq_uninit_m(2, ghs); | |
355 | ||
b3b94faa DT |
356 | d_instantiate(dentry, inode); |
357 | mark_inode_dirty(inode); | |
358 | ||
359 | return 0; | |
360 | } | |
361 | ||
362 | /** | |
363 | * gfs2_mkdir - Make a directory | |
364 | * @dir: The parent directory of the new one | |
365 | * @dentry: The dentry of the new directory | |
366 | * @mode: The mode of the new directory | |
367 | * | |
368 | * Returns: errno | |
369 | */ | |
370 | ||
371 | static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode) | |
372 | { | |
feaa7bba SW |
373 | struct gfs2_inode *dip = GFS2_I(dir), *ip; |
374 | struct gfs2_sbd *sdp = GFS2_SB(dir); | |
b3b94faa DT |
375 | struct gfs2_holder ghs[2]; |
376 | struct inode *inode; | |
377 | struct buffer_head *dibh; | |
378 | int error; | |
379 | ||
b3b94faa DT |
380 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); |
381 | ||
e7f14f4d | 382 | inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode, 0); |
7359a19c | 383 | if (IS_ERR(inode)) { |
b3b94faa | 384 | gfs2_holder_uninit(ghs); |
7359a19c | 385 | return PTR_ERR(inode); |
b3b94faa DT |
386 | } |
387 | ||
5c676f6d | 388 | ip = ghs[1].gh_gl->gl_object; |
b3b94faa DT |
389 | |
390 | ip->i_di.di_nlink = 2; | |
391 | ip->i_di.di_size = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); | |
392 | ip->i_di.di_flags |= GFS2_DIF_JDATA; | |
393 | ip->i_di.di_payload_format = GFS2_FORMAT_DE; | |
394 | ip->i_di.di_entries = 2; | |
395 | ||
396 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
397 | ||
398 | if (!gfs2_assert_withdraw(sdp, !error)) { | |
399 | struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data; | |
c752666c | 400 | struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1); |
71b86f56 | 401 | struct qstr str; |
b3b94faa | 402 | |
71b86f56 | 403 | gfs2_str2qstr(&str, "."); |
c752666c SW |
404 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
405 | gfs2_qstr2dirent(&str, GFS2_DIRENT_SIZE(str.len), dent); | |
b3b94faa | 406 | dent->de_inum = di->di_num; /* already GFS2 endian */ |
7ecdb70a | 407 | dent->de_type = cpu_to_be16(DT_DIR); |
b3b94faa DT |
408 | di->di_entries = cpu_to_be32(1); |
409 | ||
71b86f56 | 410 | gfs2_str2qstr(&str, ".."); |
c752666c SW |
411 | dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1)); |
412 | gfs2_qstr2dirent(&str, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent); | |
b3b94faa | 413 | |
409e185d | 414 | gfs2_inum_out(&dip->i_num, &dent->de_inum); |
7ecdb70a | 415 | dent->de_type = cpu_to_be16(DT_DIR); |
b3b94faa | 416 | |
539e5d6b | 417 | gfs2_dinode_out(ip, di); |
b3b94faa DT |
418 | |
419 | brelse(dibh); | |
420 | } | |
421 | ||
422 | error = gfs2_change_nlink(dip, +1); | |
423 | gfs2_assert_withdraw(sdp, !error); /* dip already pinned */ | |
424 | ||
425 | gfs2_trans_end(sdp); | |
426 | if (dip->i_alloc.al_rgd) | |
427 | gfs2_inplace_release(dip); | |
428 | gfs2_quota_unlock(dip); | |
429 | gfs2_alloc_put(dip); | |
430 | ||
431 | gfs2_glock_dq_uninit_m(2, ghs); | |
432 | ||
b3b94faa DT |
433 | d_instantiate(dentry, inode); |
434 | mark_inode_dirty(inode); | |
435 | ||
436 | return 0; | |
437 | } | |
438 | ||
439 | /** | |
440 | * gfs2_rmdir - Remove a directory | |
441 | * @dir: The parent directory of the directory to be removed | |
442 | * @dentry: The dentry of the directory to remove | |
443 | * | |
444 | * Remove a directory. Call gfs2_rmdiri() | |
445 | * | |
446 | * Returns: errno | |
447 | */ | |
448 | ||
449 | static int gfs2_rmdir(struct inode *dir, struct dentry *dentry) | |
450 | { | |
feaa7bba SW |
451 | struct gfs2_inode *dip = GFS2_I(dir); |
452 | struct gfs2_sbd *sdp = GFS2_SB(dir); | |
453 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); | |
b3b94faa DT |
454 | struct gfs2_holder ghs[2]; |
455 | int error; | |
456 | ||
b3b94faa DT |
457 | gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); |
458 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); | |
459 | ||
460 | error = gfs2_glock_nq_m(2, ghs); | |
461 | if (error) | |
462 | goto out; | |
463 | ||
464 | error = gfs2_unlink_ok(dip, &dentry->d_name, ip); | |
465 | if (error) | |
466 | goto out_gunlock; | |
467 | ||
468 | if (ip->i_di.di_entries < 2) { | |
469 | if (gfs2_consist_inode(ip)) | |
4cc14f0b | 470 | gfs2_dinode_print(ip); |
b3b94faa DT |
471 | error = -EIO; |
472 | goto out_gunlock; | |
473 | } | |
474 | if (ip->i_di.di_entries > 2) { | |
475 | error = -ENOTEMPTY; | |
476 | goto out_gunlock; | |
477 | } | |
478 | ||
feaa7bba | 479 | error = gfs2_trans_begin(sdp, 2 * RES_DINODE + 3 * RES_LEAF + RES_RG_BIT, 0); |
b3b94faa DT |
480 | if (error) |
481 | goto out_gunlock; | |
482 | ||
feaa7bba | 483 | error = gfs2_rmdiri(dip, &dentry->d_name, ip); |
b3b94faa DT |
484 | |
485 | gfs2_trans_end(sdp); | |
486 | ||
a91ea69f | 487 | out_gunlock: |
b3b94faa | 488 | gfs2_glock_dq_m(2, ghs); |
a91ea69f | 489 | out: |
b3b94faa DT |
490 | gfs2_holder_uninit(ghs); |
491 | gfs2_holder_uninit(ghs + 1); | |
b3b94faa DT |
492 | return error; |
493 | } | |
494 | ||
495 | /** | |
496 | * gfs2_mknod - Make a special file | |
497 | * @dir: The directory in which the special file will reside | |
498 | * @dentry: The dentry of the special file | |
499 | * @mode: The mode of the special file | |
500 | * @rdev: The device specification of the special file | |
501 | * | |
502 | */ | |
503 | ||
504 | static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode, | |
505 | dev_t dev) | |
506 | { | |
e7f14f4d | 507 | struct gfs2_inode *dip = GFS2_I(dir); |
feaa7bba | 508 | struct gfs2_sbd *sdp = GFS2_SB(dir); |
b3b94faa DT |
509 | struct gfs2_holder ghs[2]; |
510 | struct inode *inode; | |
b3b94faa DT |
511 | |
512 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); | |
513 | ||
e7f14f4d | 514 | inode = gfs2_createi(ghs, &dentry->d_name, mode, dev); |
7359a19c | 515 | if (IS_ERR(inode)) { |
b3b94faa | 516 | gfs2_holder_uninit(ghs); |
7359a19c | 517 | return PTR_ERR(inode); |
b3b94faa DT |
518 | } |
519 | ||
b3b94faa DT |
520 | gfs2_trans_end(sdp); |
521 | if (dip->i_alloc.al_rgd) | |
522 | gfs2_inplace_release(dip); | |
523 | gfs2_quota_unlock(dip); | |
524 | gfs2_alloc_put(dip); | |
525 | ||
526 | gfs2_glock_dq_uninit_m(2, ghs); | |
527 | ||
b3b94faa DT |
528 | d_instantiate(dentry, inode); |
529 | mark_inode_dirty(inode); | |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
534 | /** | |
535 | * gfs2_rename - Rename a file | |
536 | * @odir: Parent directory of old file name | |
537 | * @odentry: The old dentry of the file | |
538 | * @ndir: Parent directory of new file name | |
539 | * @ndentry: The new dentry of the file | |
540 | * | |
541 | * Returns: errno | |
542 | */ | |
543 | ||
544 | static int gfs2_rename(struct inode *odir, struct dentry *odentry, | |
545 | struct inode *ndir, struct dentry *ndentry) | |
546 | { | |
feaa7bba SW |
547 | struct gfs2_inode *odip = GFS2_I(odir); |
548 | struct gfs2_inode *ndip = GFS2_I(ndir); | |
549 | struct gfs2_inode *ip = GFS2_I(odentry->d_inode); | |
b3b94faa | 550 | struct gfs2_inode *nip = NULL; |
feaa7bba | 551 | struct gfs2_sbd *sdp = GFS2_SB(odir); |
b3b94faa DT |
552 | struct gfs2_holder ghs[4], r_gh; |
553 | unsigned int num_gh; | |
554 | int dir_rename = 0; | |
555 | int alloc_required; | |
556 | unsigned int x; | |
557 | int error; | |
558 | ||
b3b94faa | 559 | if (ndentry->d_inode) { |
feaa7bba | 560 | nip = GFS2_I(ndentry->d_inode); |
b3b94faa DT |
561 | if (ip == nip) |
562 | return 0; | |
563 | } | |
564 | ||
b3b94faa DT |
565 | /* Make sure we aren't trying to move a dirctory into it's subdir */ |
566 | ||
b60623c2 | 567 | if (S_ISDIR(ip->i_inode.i_mode) && odip != ndip) { |
b3b94faa DT |
568 | dir_rename = 1; |
569 | ||
b60623c2 | 570 | error = gfs2_glock_nq_init(sdp->sd_rename_gl, LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
571 | &r_gh); |
572 | if (error) | |
573 | goto out; | |
574 | ||
575 | error = gfs2_ok_to_move(ip, ndip); | |
576 | if (error) | |
577 | goto out_gunlock_r; | |
578 | } | |
579 | ||
d9d1ca30 | 580 | num_gh = 1; |
b3b94faa | 581 | gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); |
d9d1ca30 SW |
582 | if (odip != ndip) { |
583 | gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); | |
584 | num_gh++; | |
585 | } | |
586 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); | |
587 | num_gh++; | |
b3b94faa | 588 | |
d9d1ca30 SW |
589 | if (nip) { |
590 | gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); | |
591 | num_gh++; | |
592 | } | |
b3b94faa DT |
593 | |
594 | error = gfs2_glock_nq_m(num_gh, ghs); | |
595 | if (error) | |
596 | goto out_uninit; | |
597 | ||
598 | /* Check out the old directory */ | |
599 | ||
600 | error = gfs2_unlink_ok(odip, &odentry->d_name, ip); | |
601 | if (error) | |
602 | goto out_gunlock; | |
603 | ||
604 | /* Check out the new directory */ | |
605 | ||
606 | if (nip) { | |
607 | error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip); | |
608 | if (error) | |
609 | goto out_gunlock; | |
610 | ||
b60623c2 | 611 | if (S_ISDIR(nip->i_inode.i_mode)) { |
b3b94faa DT |
612 | if (nip->i_di.di_entries < 2) { |
613 | if (gfs2_consist_inode(nip)) | |
4cc14f0b | 614 | gfs2_dinode_print(nip); |
b3b94faa DT |
615 | error = -EIO; |
616 | goto out_gunlock; | |
617 | } | |
618 | if (nip->i_di.di_entries > 2) { | |
619 | error = -ENOTEMPTY; | |
620 | goto out_gunlock; | |
621 | } | |
622 | } | |
623 | } else { | |
faf450ef | 624 | error = permission(ndir, MAY_WRITE | MAY_EXEC, NULL); |
b3b94faa DT |
625 | if (error) |
626 | goto out_gunlock; | |
627 | ||
c752666c | 628 | error = gfs2_dir_search(ndir, &ndentry->d_name, NULL, NULL); |
b3b94faa DT |
629 | switch (error) { |
630 | case -ENOENT: | |
631 | error = 0; | |
632 | break; | |
633 | case 0: | |
634 | error = -EEXIST; | |
635 | default: | |
636 | goto out_gunlock; | |
637 | }; | |
638 | ||
639 | if (odip != ndip) { | |
640 | if (!ndip->i_di.di_nlink) { | |
641 | error = -EINVAL; | |
642 | goto out_gunlock; | |
643 | } | |
cd915493 | 644 | if (ndip->i_di.di_entries == (u32)-1) { |
b3b94faa DT |
645 | error = -EFBIG; |
646 | goto out_gunlock; | |
647 | } | |
b60623c2 | 648 | if (S_ISDIR(ip->i_inode.i_mode) && |
cd915493 | 649 | ndip->i_di.di_nlink == (u32)-1) { |
b3b94faa DT |
650 | error = -EMLINK; |
651 | goto out_gunlock; | |
652 | } | |
653 | } | |
654 | } | |
655 | ||
656 | /* Check out the dir to be renamed */ | |
657 | ||
658 | if (dir_rename) { | |
faf450ef | 659 | error = permission(odentry->d_inode, MAY_WRITE, NULL); |
b3b94faa DT |
660 | if (error) |
661 | goto out_gunlock; | |
662 | } | |
663 | ||
c752666c SW |
664 | alloc_required = error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name); |
665 | if (error < 0) | |
b3b94faa | 666 | goto out_gunlock; |
c752666c | 667 | error = 0; |
b3b94faa DT |
668 | |
669 | if (alloc_required) { | |
670 | struct gfs2_alloc *al = gfs2_alloc_get(ndip); | |
671 | ||
672 | error = gfs2_quota_lock(ndip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE); | |
673 | if (error) | |
674 | goto out_alloc; | |
675 | ||
676 | error = gfs2_quota_check(ndip, ndip->i_di.di_uid, | |
677 | ndip->i_di.di_gid); | |
678 | if (error) | |
679 | goto out_gunlock_q; | |
680 | ||
681 | al->al_requested = sdp->sd_max_dirres; | |
682 | ||
683 | error = gfs2_inplace_reserve(ndip); | |
684 | if (error) | |
685 | goto out_gunlock_q; | |
686 | ||
fe1bdedc | 687 | error = gfs2_trans_begin(sdp, sdp->sd_max_dirres + |
b3b94faa DT |
688 | al->al_rgd->rd_ri.ri_length + |
689 | 4 * RES_DINODE + 4 * RES_LEAF + | |
feaa7bba | 690 | RES_STATFS + RES_QUOTA, 0); |
b3b94faa DT |
691 | if (error) |
692 | goto out_ipreserv; | |
693 | } else { | |
694 | error = gfs2_trans_begin(sdp, 4 * RES_DINODE + | |
feaa7bba | 695 | 5 * RES_LEAF, 0); |
b3b94faa DT |
696 | if (error) |
697 | goto out_gunlock; | |
698 | } | |
699 | ||
700 | /* Remove the target file, if it exists */ | |
701 | ||
702 | if (nip) { | |
b60623c2 | 703 | if (S_ISDIR(nip->i_inode.i_mode)) |
feaa7bba SW |
704 | error = gfs2_rmdiri(ndip, &ndentry->d_name, nip); |
705 | else { | |
706 | error = gfs2_dir_del(ndip, &ndentry->d_name); | |
707 | if (error) | |
708 | goto out_end_trans; | |
709 | error = gfs2_change_nlink(nip, -1); | |
710 | } | |
b3b94faa DT |
711 | if (error) |
712 | goto out_end_trans; | |
713 | } | |
714 | ||
715 | if (dir_rename) { | |
716 | struct qstr name; | |
71b86f56 | 717 | gfs2_str2qstr(&name, ".."); |
b3b94faa DT |
718 | |
719 | error = gfs2_change_nlink(ndip, +1); | |
720 | if (error) | |
721 | goto out_end_trans; | |
722 | error = gfs2_change_nlink(odip, -1); | |
723 | if (error) | |
724 | goto out_end_trans; | |
725 | ||
726 | error = gfs2_dir_mvino(ip, &name, &ndip->i_num, DT_DIR); | |
727 | if (error) | |
728 | goto out_end_trans; | |
729 | } else { | |
730 | struct buffer_head *dibh; | |
731 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
732 | if (error) | |
733 | goto out_end_trans; | |
734 | ip->i_di.di_ctime = get_seconds(); | |
d4e9c4c3 | 735 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 736 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa DT |
737 | brelse(dibh); |
738 | } | |
739 | ||
740 | error = gfs2_dir_del(odip, &odentry->d_name); | |
741 | if (error) | |
742 | goto out_end_trans; | |
743 | ||
c752666c | 744 | error = gfs2_dir_add(ndir, &ndentry->d_name, &ip->i_num, |
b60623c2 | 745 | IF2DT(ip->i_inode.i_mode)); |
b3b94faa DT |
746 | if (error) |
747 | goto out_end_trans; | |
748 | ||
feaa7bba | 749 | out_end_trans: |
b3b94faa | 750 | gfs2_trans_end(sdp); |
feaa7bba | 751 | out_ipreserv: |
b3b94faa DT |
752 | if (alloc_required) |
753 | gfs2_inplace_release(ndip); | |
feaa7bba | 754 | out_gunlock_q: |
b3b94faa DT |
755 | if (alloc_required) |
756 | gfs2_quota_unlock(ndip); | |
feaa7bba | 757 | out_alloc: |
b3b94faa DT |
758 | if (alloc_required) |
759 | gfs2_alloc_put(ndip); | |
feaa7bba | 760 | out_gunlock: |
b3b94faa | 761 | gfs2_glock_dq_m(num_gh, ghs); |
feaa7bba | 762 | out_uninit: |
b3b94faa DT |
763 | for (x = 0; x < num_gh; x++) |
764 | gfs2_holder_uninit(ghs + x); | |
feaa7bba | 765 | out_gunlock_r: |
b3b94faa DT |
766 | if (dir_rename) |
767 | gfs2_glock_dq_uninit(&r_gh); | |
feaa7bba | 768 | out: |
b3b94faa DT |
769 | return error; |
770 | } | |
771 | ||
772 | /** | |
773 | * gfs2_readlink - Read the value of a symlink | |
774 | * @dentry: the symlink | |
775 | * @buf: the buffer to read the symlink data into | |
776 | * @size: the size of the buffer | |
777 | * | |
778 | * Returns: errno | |
779 | */ | |
780 | ||
781 | static int gfs2_readlink(struct dentry *dentry, char __user *user_buf, | |
782 | int user_size) | |
783 | { | |
feaa7bba | 784 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); |
b3b94faa DT |
785 | char array[GFS2_FAST_NAME_SIZE], *buf = array; |
786 | unsigned int len = GFS2_FAST_NAME_SIZE; | |
787 | int error; | |
788 | ||
b3b94faa DT |
789 | error = gfs2_readlinki(ip, &buf, &len); |
790 | if (error) | |
791 | return error; | |
792 | ||
793 | if (user_size > len - 1) | |
794 | user_size = len - 1; | |
795 | ||
796 | if (copy_to_user(user_buf, buf, user_size)) | |
797 | error = -EFAULT; | |
798 | else | |
799 | error = user_size; | |
800 | ||
801 | if (buf != array) | |
802 | kfree(buf); | |
803 | ||
804 | return error; | |
805 | } | |
806 | ||
807 | /** | |
808 | * gfs2_follow_link - Follow a symbolic link | |
809 | * @dentry: The dentry of the link | |
810 | * @nd: Data that we pass to vfs_follow_link() | |
811 | * | |
812 | * This can handle symlinks of any size. It is optimised for symlinks | |
813 | * under GFS2_FAST_NAME_SIZE. | |
814 | * | |
815 | * Returns: 0 on success or error code | |
816 | */ | |
817 | ||
818 | static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd) | |
819 | { | |
feaa7bba | 820 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); |
b3b94faa DT |
821 | char array[GFS2_FAST_NAME_SIZE], *buf = array; |
822 | unsigned int len = GFS2_FAST_NAME_SIZE; | |
823 | int error; | |
824 | ||
b3b94faa DT |
825 | error = gfs2_readlinki(ip, &buf, &len); |
826 | if (!error) { | |
827 | error = vfs_follow_link(nd, buf); | |
828 | if (buf != array) | |
829 | kfree(buf); | |
830 | } | |
831 | ||
832 | return ERR_PTR(error); | |
833 | } | |
834 | ||
835 | /** | |
836 | * gfs2_permission - | |
837 | * @inode: | |
838 | * @mask: | |
839 | * @nd: passed from Linux VFS, ignored by us | |
840 | * | |
841 | * Returns: errno | |
842 | */ | |
843 | ||
844 | static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd) | |
845 | { | |
feaa7bba | 846 | struct gfs2_inode *ip = GFS2_I(inode); |
b3b94faa DT |
847 | struct gfs2_holder i_gh; |
848 | int error; | |
849 | ||
b3b94faa DT |
850 | if (ip->i_vn == ip->i_gl->gl_vn) |
851 | return generic_permission(inode, mask, gfs2_check_acl); | |
852 | ||
faf450ef | 853 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); |
b3b94faa DT |
854 | if (!error) { |
855 | error = generic_permission(inode, mask, gfs2_check_acl_locked); | |
856 | gfs2_glock_dq_uninit(&i_gh); | |
857 | } | |
858 | ||
859 | return error; | |
860 | } | |
861 | ||
862 | static int setattr_size(struct inode *inode, struct iattr *attr) | |
863 | { | |
feaa7bba | 864 | struct gfs2_inode *ip = GFS2_I(inode); |
b3b94faa DT |
865 | int error; |
866 | ||
867 | if (attr->ia_size != ip->i_di.di_size) { | |
868 | error = vmtruncate(inode, attr->ia_size); | |
869 | if (error) | |
870 | return error; | |
871 | } | |
872 | ||
aa6a85a9 | 873 | error = gfs2_truncatei(ip, attr->ia_size); |
b3b94faa DT |
874 | if (error) |
875 | return error; | |
876 | ||
877 | return error; | |
878 | } | |
879 | ||
880 | static int setattr_chown(struct inode *inode, struct iattr *attr) | |
881 | { | |
feaa7bba SW |
882 | struct gfs2_inode *ip = GFS2_I(inode); |
883 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
b3b94faa | 884 | struct buffer_head *dibh; |
cd915493 | 885 | u32 ouid, ogid, nuid, ngid; |
b3b94faa DT |
886 | int error; |
887 | ||
888 | ouid = ip->i_di.di_uid; | |
889 | ogid = ip->i_di.di_gid; | |
890 | nuid = attr->ia_uid; | |
891 | ngid = attr->ia_gid; | |
892 | ||
893 | if (!(attr->ia_valid & ATTR_UID) || ouid == nuid) | |
894 | ouid = nuid = NO_QUOTA_CHANGE; | |
895 | if (!(attr->ia_valid & ATTR_GID) || ogid == ngid) | |
896 | ogid = ngid = NO_QUOTA_CHANGE; | |
897 | ||
898 | gfs2_alloc_get(ip); | |
899 | ||
900 | error = gfs2_quota_lock(ip, nuid, ngid); | |
901 | if (error) | |
902 | goto out_alloc; | |
903 | ||
904 | if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) { | |
905 | error = gfs2_quota_check(ip, nuid, ngid); | |
906 | if (error) | |
907 | goto out_gunlock_q; | |
908 | } | |
909 | ||
910 | error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0); | |
911 | if (error) | |
912 | goto out_gunlock_q; | |
913 | ||
914 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
915 | if (error) | |
916 | goto out_end_trans; | |
917 | ||
918 | error = inode_setattr(inode, attr); | |
919 | gfs2_assert_warn(sdp, !error); | |
920 | gfs2_inode_attr_out(ip); | |
921 | ||
d4e9c4c3 | 922 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 923 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa DT |
924 | brelse(dibh); |
925 | ||
926 | if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) { | |
af18ddb8 SW |
927 | gfs2_quota_change(ip, -ip->i_di.di_blocks, ouid, ogid); |
928 | gfs2_quota_change(ip, ip->i_di.di_blocks, nuid, ngid); | |
b3b94faa DT |
929 | } |
930 | ||
a91ea69f | 931 | out_end_trans: |
b3b94faa | 932 | gfs2_trans_end(sdp); |
a91ea69f | 933 | out_gunlock_q: |
b3b94faa | 934 | gfs2_quota_unlock(ip); |
a91ea69f | 935 | out_alloc: |
b3b94faa | 936 | gfs2_alloc_put(ip); |
b3b94faa DT |
937 | return error; |
938 | } | |
939 | ||
940 | /** | |
941 | * gfs2_setattr - Change attributes on an inode | |
942 | * @dentry: The dentry which is changing | |
943 | * @attr: The structure describing the change | |
944 | * | |
945 | * The VFS layer wants to change one or more of an inodes attributes. Write | |
946 | * that change out to disk. | |
947 | * | |
948 | * Returns: errno | |
949 | */ | |
950 | ||
951 | static int gfs2_setattr(struct dentry *dentry, struct iattr *attr) | |
952 | { | |
953 | struct inode *inode = dentry->d_inode; | |
feaa7bba | 954 | struct gfs2_inode *ip = GFS2_I(inode); |
b3b94faa DT |
955 | struct gfs2_holder i_gh; |
956 | int error; | |
957 | ||
b3b94faa DT |
958 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh); |
959 | if (error) | |
960 | return error; | |
961 | ||
962 | error = -EPERM; | |
963 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) | |
964 | goto out; | |
965 | ||
966 | error = inode_change_ok(inode, attr); | |
967 | if (error) | |
968 | goto out; | |
969 | ||
970 | if (attr->ia_valid & ATTR_SIZE) | |
971 | error = setattr_size(inode, attr); | |
972 | else if (attr->ia_valid & (ATTR_UID | ATTR_GID)) | |
973 | error = setattr_chown(inode, attr); | |
974 | else if ((attr->ia_valid & ATTR_MODE) && IS_POSIXACL(inode)) | |
975 | error = gfs2_acl_chmod(ip, attr); | |
976 | else | |
977 | error = gfs2_setattr_simple(ip, attr); | |
978 | ||
a91ea69f | 979 | out: |
b3b94faa | 980 | gfs2_glock_dq_uninit(&i_gh); |
b3b94faa DT |
981 | if (!error) |
982 | mark_inode_dirty(inode); | |
b3b94faa DT |
983 | return error; |
984 | } | |
985 | ||
986 | /** | |
987 | * gfs2_getattr - Read out an inode's attributes | |
26c1a574 | 988 | * @mnt: The vfsmount the inode is being accessed from |
b3b94faa DT |
989 | * @dentry: The dentry to stat |
990 | * @stat: The inode's stats | |
991 | * | |
992 | * Returns: errno | |
993 | */ | |
994 | ||
995 | static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry, | |
996 | struct kstat *stat) | |
997 | { | |
998 | struct inode *inode = dentry->d_inode; | |
feaa7bba | 999 | struct gfs2_inode *ip = GFS2_I(inode); |
b3b94faa DT |
1000 | struct gfs2_holder gh; |
1001 | int error; | |
1002 | ||
b3b94faa DT |
1003 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); |
1004 | if (!error) { | |
1005 | generic_fillattr(inode, stat); | |
1006 | gfs2_glock_dq_uninit(&gh); | |
1007 | } | |
1008 | ||
1009 | return error; | |
1010 | } | |
1011 | ||
1012 | static int gfs2_setxattr(struct dentry *dentry, const char *name, | |
1013 | const void *data, size_t size, int flags) | |
1014 | { | |
feaa7bba | 1015 | struct inode *inode = dentry->d_inode; |
b3b94faa DT |
1016 | struct gfs2_ea_request er; |
1017 | ||
b3b94faa DT |
1018 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
1019 | er.er_type = gfs2_ea_name2type(name, &er.er_name); | |
1020 | if (er.er_type == GFS2_EATYPE_UNUSED) | |
1021 | return -EOPNOTSUPP; | |
1022 | er.er_data = (char *)data; | |
1023 | er.er_name_len = strlen(er.er_name); | |
1024 | er.er_data_len = size; | |
1025 | er.er_flags = flags; | |
1026 | ||
feaa7bba | 1027 | gfs2_assert_warn(GFS2_SB(inode), !(er.er_flags & GFS2_ERF_MODE)); |
b3b94faa | 1028 | |
feaa7bba | 1029 | return gfs2_ea_set(GFS2_I(inode), &er); |
b3b94faa DT |
1030 | } |
1031 | ||
1032 | static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name, | |
1033 | void *data, size_t size) | |
1034 | { | |
1035 | struct gfs2_ea_request er; | |
1036 | ||
b3b94faa DT |
1037 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
1038 | er.er_type = gfs2_ea_name2type(name, &er.er_name); | |
1039 | if (er.er_type == GFS2_EATYPE_UNUSED) | |
1040 | return -EOPNOTSUPP; | |
1041 | er.er_data = data; | |
1042 | er.er_name_len = strlen(er.er_name); | |
1043 | er.er_data_len = size; | |
1044 | ||
feaa7bba | 1045 | return gfs2_ea_get(GFS2_I(dentry->d_inode), &er); |
b3b94faa DT |
1046 | } |
1047 | ||
1048 | static ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size) | |
1049 | { | |
1050 | struct gfs2_ea_request er; | |
1051 | ||
b3b94faa DT |
1052 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
1053 | er.er_data = (size) ? buffer : NULL; | |
1054 | er.er_data_len = size; | |
1055 | ||
feaa7bba | 1056 | return gfs2_ea_list(GFS2_I(dentry->d_inode), &er); |
b3b94faa DT |
1057 | } |
1058 | ||
1059 | static int gfs2_removexattr(struct dentry *dentry, const char *name) | |
1060 | { | |
1061 | struct gfs2_ea_request er; | |
1062 | ||
b3b94faa DT |
1063 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
1064 | er.er_type = gfs2_ea_name2type(name, &er.er_name); | |
1065 | if (er.er_type == GFS2_EATYPE_UNUSED) | |
1066 | return -EOPNOTSUPP; | |
1067 | er.er_name_len = strlen(er.er_name); | |
1068 | ||
feaa7bba | 1069 | return gfs2_ea_remove(GFS2_I(dentry->d_inode), &er); |
b3b94faa DT |
1070 | } |
1071 | ||
1072 | struct inode_operations gfs2_file_iops = { | |
1073 | .permission = gfs2_permission, | |
1074 | .setattr = gfs2_setattr, | |
1075 | .getattr = gfs2_getattr, | |
1076 | .setxattr = gfs2_setxattr, | |
1077 | .getxattr = gfs2_getxattr, | |
1078 | .listxattr = gfs2_listxattr, | |
1079 | .removexattr = gfs2_removexattr, | |
1080 | }; | |
1081 | ||
1082 | struct inode_operations gfs2_dev_iops = { | |
1083 | .permission = gfs2_permission, | |
1084 | .setattr = gfs2_setattr, | |
1085 | .getattr = gfs2_getattr, | |
1086 | .setxattr = gfs2_setxattr, | |
1087 | .getxattr = gfs2_getxattr, | |
1088 | .listxattr = gfs2_listxattr, | |
1089 | .removexattr = gfs2_removexattr, | |
1090 | }; | |
1091 | ||
1092 | struct inode_operations gfs2_dir_iops = { | |
1093 | .create = gfs2_create, | |
1094 | .lookup = gfs2_lookup, | |
1095 | .link = gfs2_link, | |
1096 | .unlink = gfs2_unlink, | |
1097 | .symlink = gfs2_symlink, | |
1098 | .mkdir = gfs2_mkdir, | |
1099 | .rmdir = gfs2_rmdir, | |
1100 | .mknod = gfs2_mknod, | |
1101 | .rename = gfs2_rename, | |
1102 | .permission = gfs2_permission, | |
1103 | .setattr = gfs2_setattr, | |
1104 | .getattr = gfs2_getattr, | |
1105 | .setxattr = gfs2_setxattr, | |
1106 | .getxattr = gfs2_getxattr, | |
1107 | .listxattr = gfs2_listxattr, | |
1108 | .removexattr = gfs2_removexattr, | |
1109 | }; | |
1110 | ||
1111 | struct inode_operations gfs2_symlink_iops = { | |
1112 | .readlink = gfs2_readlink, | |
1113 | .follow_link = gfs2_follow_link, | |
1114 | .permission = gfs2_permission, | |
1115 | .setattr = gfs2_setattr, | |
1116 | .getattr = gfs2_getattr, | |
1117 | .setxattr = gfs2_setxattr, | |
1118 | .getxattr = gfs2_getxattr, | |
1119 | .listxattr = gfs2_listxattr, | |
1120 | .removexattr = gfs2_removexattr, | |
1121 | }; | |
1122 |