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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 | ||
2933f925 | 199 | error = gfs2_quota_check(dip, dip->i_inode.i_uid, dip->i_inode.i_gid); |
b3b94faa DT |
200 | if (error) |
201 | goto out_gunlock_q; | |
202 | ||
203 | al->al_requested = sdp->sd_max_dirres; | |
204 | ||
205 | error = gfs2_inplace_reserve(dip); | |
206 | if (error) | |
207 | goto out_gunlock_q; | |
208 | ||
1b50259b | 209 | error = gfs2_trans_begin(sdp, sdp->sd_max_dirres + |
b3b94faa DT |
210 | al->al_rgd->rd_ri.ri_length + |
211 | 2 * RES_DINODE + RES_STATFS + | |
212 | RES_QUOTA, 0); | |
213 | if (error) | |
214 | goto out_ipres; | |
215 | } else { | |
216 | error = gfs2_trans_begin(sdp, 2 * RES_DINODE + RES_LEAF, 0); | |
217 | if (error) | |
218 | goto out_ipres; | |
219 | } | |
220 | ||
c752666c | 221 | error = gfs2_dir_add(dir, &dentry->d_name, &ip->i_num, |
b60623c2 | 222 | IF2DT(inode->i_mode)); |
b3b94faa DT |
223 | if (error) |
224 | goto out_end_trans; | |
225 | ||
226 | error = gfs2_change_nlink(ip, +1); | |
227 | ||
feaa7bba | 228 | out_end_trans: |
b3b94faa | 229 | gfs2_trans_end(sdp); |
feaa7bba | 230 | out_ipres: |
b3b94faa DT |
231 | if (alloc_required) |
232 | gfs2_inplace_release(dip); | |
feaa7bba | 233 | out_gunlock_q: |
b3b94faa DT |
234 | if (alloc_required) |
235 | gfs2_quota_unlock(dip); | |
feaa7bba | 236 | out_alloc: |
b3b94faa DT |
237 | if (alloc_required) |
238 | gfs2_alloc_put(dip); | |
feaa7bba | 239 | out_gunlock: |
b3b94faa | 240 | gfs2_glock_dq_m(2, ghs); |
feaa7bba | 241 | out: |
b3b94faa DT |
242 | gfs2_holder_uninit(ghs); |
243 | gfs2_holder_uninit(ghs + 1); | |
b3b94faa | 244 | if (!error) { |
29937ac6 | 245 | atomic_inc(&inode->i_count); |
b3b94faa DT |
246 | d_instantiate(dentry, inode); |
247 | mark_inode_dirty(inode); | |
248 | } | |
b3b94faa DT |
249 | return error; |
250 | } | |
251 | ||
252 | /** | |
253 | * gfs2_unlink - Unlink a file | |
254 | * @dir: The inode of the directory containing the file to unlink | |
255 | * @dentry: The file itself | |
256 | * | |
257 | * Unlink a file. Call gfs2_unlinki() | |
258 | * | |
259 | * Returns: errno | |
260 | */ | |
261 | ||
262 | static int gfs2_unlink(struct inode *dir, struct dentry *dentry) | |
263 | { | |
feaa7bba SW |
264 | struct gfs2_inode *dip = GFS2_I(dir); |
265 | struct gfs2_sbd *sdp = GFS2_SB(dir); | |
266 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); | |
b3b94faa DT |
267 | struct gfs2_holder ghs[2]; |
268 | int error; | |
269 | ||
b3b94faa DT |
270 | gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); |
271 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); | |
272 | ||
273 | error = gfs2_glock_nq_m(2, ghs); | |
274 | if (error) | |
275 | goto out; | |
276 | ||
277 | error = gfs2_unlink_ok(dip, &dentry->d_name, ip); | |
278 | if (error) | |
279 | goto out_gunlock; | |
280 | ||
feaa7bba | 281 | error = gfs2_trans_begin(sdp, 2*RES_DINODE + RES_LEAF + RES_RG_BIT, 0); |
b3b94faa DT |
282 | if (error) |
283 | goto out_gunlock; | |
284 | ||
feaa7bba SW |
285 | error = gfs2_dir_del(dip, &dentry->d_name); |
286 | if (error) | |
287 | goto out_end_trans; | |
b3b94faa | 288 | |
feaa7bba | 289 | error = gfs2_change_nlink(ip, -1); |
b3b94faa | 290 | |
feaa7bba SW |
291 | out_end_trans: |
292 | gfs2_trans_end(sdp); | |
293 | out_gunlock: | |
b3b94faa | 294 | gfs2_glock_dq_m(2, ghs); |
feaa7bba | 295 | out: |
b3b94faa DT |
296 | gfs2_holder_uninit(ghs); |
297 | gfs2_holder_uninit(ghs + 1); | |
b3b94faa DT |
298 | return error; |
299 | } | |
300 | ||
301 | /** | |
302 | * gfs2_symlink - Create a symlink | |
303 | * @dir: The directory to create the symlink in | |
304 | * @dentry: The dentry to put the symlink in | |
305 | * @symname: The thing which the link points to | |
306 | * | |
307 | * Returns: errno | |
308 | */ | |
309 | ||
310 | static int gfs2_symlink(struct inode *dir, struct dentry *dentry, | |
311 | const char *symname) | |
312 | { | |
feaa7bba SW |
313 | struct gfs2_inode *dip = GFS2_I(dir), *ip; |
314 | struct gfs2_sbd *sdp = GFS2_SB(dir); | |
b3b94faa DT |
315 | struct gfs2_holder ghs[2]; |
316 | struct inode *inode; | |
317 | struct buffer_head *dibh; | |
318 | int size; | |
319 | int error; | |
320 | ||
b3b94faa DT |
321 | /* Must be stuffed with a null terminator for gfs2_follow_link() */ |
322 | size = strlen(symname); | |
323 | if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1) | |
324 | return -ENAMETOOLONG; | |
325 | ||
326 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); | |
327 | ||
e7f14f4d | 328 | inode = gfs2_createi(ghs, &dentry->d_name, S_IFLNK | S_IRWXUGO, 0); |
7359a19c | 329 | if (IS_ERR(inode)) { |
b3b94faa | 330 | gfs2_holder_uninit(ghs); |
7359a19c | 331 | return PTR_ERR(inode); |
b3b94faa DT |
332 | } |
333 | ||
5c676f6d | 334 | ip = ghs[1].gh_gl->gl_object; |
b3b94faa DT |
335 | |
336 | ip->i_di.di_size = size; | |
337 | ||
338 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
339 | ||
340 | if (!gfs2_assert_withdraw(sdp, !error)) { | |
539e5d6b | 341 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa DT |
342 | memcpy(dibh->b_data + sizeof(struct gfs2_dinode), symname, |
343 | size); | |
344 | brelse(dibh); | |
345 | } | |
346 | ||
347 | gfs2_trans_end(sdp); | |
348 | if (dip->i_alloc.al_rgd) | |
349 | gfs2_inplace_release(dip); | |
350 | gfs2_quota_unlock(dip); | |
351 | gfs2_alloc_put(dip); | |
352 | ||
353 | gfs2_glock_dq_uninit_m(2, ghs); | |
354 | ||
b3b94faa DT |
355 | d_instantiate(dentry, inode); |
356 | mark_inode_dirty(inode); | |
357 | ||
358 | return 0; | |
359 | } | |
360 | ||
361 | /** | |
362 | * gfs2_mkdir - Make a directory | |
363 | * @dir: The parent directory of the new one | |
364 | * @dentry: The dentry of the new directory | |
365 | * @mode: The mode of the new directory | |
366 | * | |
367 | * Returns: errno | |
368 | */ | |
369 | ||
370 | static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode) | |
371 | { | |
feaa7bba SW |
372 | struct gfs2_inode *dip = GFS2_I(dir), *ip; |
373 | struct gfs2_sbd *sdp = GFS2_SB(dir); | |
b3b94faa DT |
374 | struct gfs2_holder ghs[2]; |
375 | struct inode *inode; | |
376 | struct buffer_head *dibh; | |
377 | int error; | |
378 | ||
b3b94faa DT |
379 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); |
380 | ||
e7f14f4d | 381 | inode = gfs2_createi(ghs, &dentry->d_name, S_IFDIR | mode, 0); |
7359a19c | 382 | if (IS_ERR(inode)) { |
b3b94faa | 383 | gfs2_holder_uninit(ghs); |
7359a19c | 384 | return PTR_ERR(inode); |
b3b94faa DT |
385 | } |
386 | ||
5c676f6d | 387 | ip = ghs[1].gh_gl->gl_object; |
b3b94faa DT |
388 | |
389 | ip->i_di.di_nlink = 2; | |
390 | ip->i_di.di_size = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); | |
391 | ip->i_di.di_flags |= GFS2_DIF_JDATA; | |
392 | ip->i_di.di_payload_format = GFS2_FORMAT_DE; | |
393 | ip->i_di.di_entries = 2; | |
394 | ||
395 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
396 | ||
397 | if (!gfs2_assert_withdraw(sdp, !error)) { | |
398 | struct gfs2_dinode *di = (struct gfs2_dinode *)dibh->b_data; | |
c752666c | 399 | struct gfs2_dirent *dent = (struct gfs2_dirent *)(di+1); |
71b86f56 | 400 | struct qstr str; |
b3b94faa | 401 | |
71b86f56 | 402 | gfs2_str2qstr(&str, "."); |
c752666c SW |
403 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
404 | gfs2_qstr2dirent(&str, GFS2_DIRENT_SIZE(str.len), dent); | |
b3b94faa | 405 | dent->de_inum = di->di_num; /* already GFS2 endian */ |
7ecdb70a | 406 | dent->de_type = cpu_to_be16(DT_DIR); |
b3b94faa DT |
407 | di->di_entries = cpu_to_be32(1); |
408 | ||
71b86f56 | 409 | gfs2_str2qstr(&str, ".."); |
c752666c SW |
410 | dent = (struct gfs2_dirent *)((char*)dent + GFS2_DIRENT_SIZE(1)); |
411 | gfs2_qstr2dirent(&str, dibh->b_size - GFS2_DIRENT_SIZE(1) - sizeof(struct gfs2_dinode), dent); | |
b3b94faa | 412 | |
409e185d | 413 | gfs2_inum_out(&dip->i_num, &dent->de_inum); |
7ecdb70a | 414 | dent->de_type = cpu_to_be16(DT_DIR); |
b3b94faa | 415 | |
539e5d6b | 416 | gfs2_dinode_out(ip, di); |
b3b94faa DT |
417 | |
418 | brelse(dibh); | |
419 | } | |
420 | ||
421 | error = gfs2_change_nlink(dip, +1); | |
422 | gfs2_assert_withdraw(sdp, !error); /* dip already pinned */ | |
423 | ||
424 | gfs2_trans_end(sdp); | |
425 | if (dip->i_alloc.al_rgd) | |
426 | gfs2_inplace_release(dip); | |
427 | gfs2_quota_unlock(dip); | |
428 | gfs2_alloc_put(dip); | |
429 | ||
430 | gfs2_glock_dq_uninit_m(2, ghs); | |
431 | ||
b3b94faa DT |
432 | d_instantiate(dentry, inode); |
433 | mark_inode_dirty(inode); | |
434 | ||
435 | return 0; | |
436 | } | |
437 | ||
438 | /** | |
439 | * gfs2_rmdir - Remove a directory | |
440 | * @dir: The parent directory of the directory to be removed | |
441 | * @dentry: The dentry of the directory to remove | |
442 | * | |
443 | * Remove a directory. Call gfs2_rmdiri() | |
444 | * | |
445 | * Returns: errno | |
446 | */ | |
447 | ||
448 | static int gfs2_rmdir(struct inode *dir, struct dentry *dentry) | |
449 | { | |
feaa7bba SW |
450 | struct gfs2_inode *dip = GFS2_I(dir); |
451 | struct gfs2_sbd *sdp = GFS2_SB(dir); | |
452 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); | |
b3b94faa DT |
453 | struct gfs2_holder ghs[2]; |
454 | int error; | |
455 | ||
b3b94faa DT |
456 | gfs2_holder_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); |
457 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + 1); | |
458 | ||
459 | error = gfs2_glock_nq_m(2, ghs); | |
460 | if (error) | |
461 | goto out; | |
462 | ||
463 | error = gfs2_unlink_ok(dip, &dentry->d_name, ip); | |
464 | if (error) | |
465 | goto out_gunlock; | |
466 | ||
467 | if (ip->i_di.di_entries < 2) { | |
468 | if (gfs2_consist_inode(ip)) | |
4cc14f0b | 469 | gfs2_dinode_print(ip); |
b3b94faa DT |
470 | error = -EIO; |
471 | goto out_gunlock; | |
472 | } | |
473 | if (ip->i_di.di_entries > 2) { | |
474 | error = -ENOTEMPTY; | |
475 | goto out_gunlock; | |
476 | } | |
477 | ||
feaa7bba | 478 | error = gfs2_trans_begin(sdp, 2 * RES_DINODE + 3 * RES_LEAF + RES_RG_BIT, 0); |
b3b94faa DT |
479 | if (error) |
480 | goto out_gunlock; | |
481 | ||
feaa7bba | 482 | error = gfs2_rmdiri(dip, &dentry->d_name, ip); |
b3b94faa DT |
483 | |
484 | gfs2_trans_end(sdp); | |
485 | ||
a91ea69f | 486 | out_gunlock: |
b3b94faa | 487 | gfs2_glock_dq_m(2, ghs); |
a91ea69f | 488 | out: |
b3b94faa DT |
489 | gfs2_holder_uninit(ghs); |
490 | gfs2_holder_uninit(ghs + 1); | |
b3b94faa DT |
491 | return error; |
492 | } | |
493 | ||
494 | /** | |
495 | * gfs2_mknod - Make a special file | |
496 | * @dir: The directory in which the special file will reside | |
497 | * @dentry: The dentry of the special file | |
498 | * @mode: The mode of the special file | |
499 | * @rdev: The device specification of the special file | |
500 | * | |
501 | */ | |
502 | ||
503 | static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode, | |
504 | dev_t dev) | |
505 | { | |
e7f14f4d | 506 | struct gfs2_inode *dip = GFS2_I(dir); |
feaa7bba | 507 | struct gfs2_sbd *sdp = GFS2_SB(dir); |
b3b94faa DT |
508 | struct gfs2_holder ghs[2]; |
509 | struct inode *inode; | |
b3b94faa DT |
510 | |
511 | gfs2_holder_init(dip->i_gl, 0, 0, ghs); | |
512 | ||
e7f14f4d | 513 | inode = gfs2_createi(ghs, &dentry->d_name, mode, dev); |
7359a19c | 514 | if (IS_ERR(inode)) { |
b3b94faa | 515 | gfs2_holder_uninit(ghs); |
7359a19c | 516 | return PTR_ERR(inode); |
b3b94faa DT |
517 | } |
518 | ||
b3b94faa DT |
519 | gfs2_trans_end(sdp); |
520 | if (dip->i_alloc.al_rgd) | |
521 | gfs2_inplace_release(dip); | |
522 | gfs2_quota_unlock(dip); | |
523 | gfs2_alloc_put(dip); | |
524 | ||
525 | gfs2_glock_dq_uninit_m(2, ghs); | |
526 | ||
b3b94faa DT |
527 | d_instantiate(dentry, inode); |
528 | mark_inode_dirty(inode); | |
529 | ||
530 | return 0; | |
531 | } | |
532 | ||
533 | /** | |
534 | * gfs2_rename - Rename a file | |
535 | * @odir: Parent directory of old file name | |
536 | * @odentry: The old dentry of the file | |
537 | * @ndir: Parent directory of new file name | |
538 | * @ndentry: The new dentry of the file | |
539 | * | |
540 | * Returns: errno | |
541 | */ | |
542 | ||
543 | static int gfs2_rename(struct inode *odir, struct dentry *odentry, | |
544 | struct inode *ndir, struct dentry *ndentry) | |
545 | { | |
feaa7bba SW |
546 | struct gfs2_inode *odip = GFS2_I(odir); |
547 | struct gfs2_inode *ndip = GFS2_I(ndir); | |
548 | struct gfs2_inode *ip = GFS2_I(odentry->d_inode); | |
b3b94faa | 549 | struct gfs2_inode *nip = NULL; |
feaa7bba | 550 | struct gfs2_sbd *sdp = GFS2_SB(odir); |
b3b94faa DT |
551 | struct gfs2_holder ghs[4], r_gh; |
552 | unsigned int num_gh; | |
553 | int dir_rename = 0; | |
554 | int alloc_required; | |
555 | unsigned int x; | |
556 | int error; | |
557 | ||
b3b94faa | 558 | if (ndentry->d_inode) { |
feaa7bba | 559 | nip = GFS2_I(ndentry->d_inode); |
b3b94faa DT |
560 | if (ip == nip) |
561 | return 0; | |
562 | } | |
563 | ||
b3b94faa DT |
564 | /* Make sure we aren't trying to move a dirctory into it's subdir */ |
565 | ||
b60623c2 | 566 | if (S_ISDIR(ip->i_inode.i_mode) && odip != ndip) { |
b3b94faa DT |
567 | dir_rename = 1; |
568 | ||
b60623c2 | 569 | error = gfs2_glock_nq_init(sdp->sd_rename_gl, LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
570 | &r_gh); |
571 | if (error) | |
572 | goto out; | |
573 | ||
574 | error = gfs2_ok_to_move(ip, ndip); | |
575 | if (error) | |
576 | goto out_gunlock_r; | |
577 | } | |
578 | ||
d9d1ca30 | 579 | num_gh = 1; |
b3b94faa | 580 | gfs2_holder_init(odip->i_gl, LM_ST_EXCLUSIVE, 0, ghs); |
d9d1ca30 SW |
581 | if (odip != ndip) { |
582 | gfs2_holder_init(ndip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); | |
583 | num_gh++; | |
584 | } | |
585 | gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); | |
586 | num_gh++; | |
b3b94faa | 587 | |
d9d1ca30 SW |
588 | if (nip) { |
589 | gfs2_holder_init(nip->i_gl, LM_ST_EXCLUSIVE, 0, ghs + num_gh); | |
590 | num_gh++; | |
591 | } | |
b3b94faa DT |
592 | |
593 | error = gfs2_glock_nq_m(num_gh, ghs); | |
594 | if (error) | |
595 | goto out_uninit; | |
596 | ||
597 | /* Check out the old directory */ | |
598 | ||
599 | error = gfs2_unlink_ok(odip, &odentry->d_name, ip); | |
600 | if (error) | |
601 | goto out_gunlock; | |
602 | ||
603 | /* Check out the new directory */ | |
604 | ||
605 | if (nip) { | |
606 | error = gfs2_unlink_ok(ndip, &ndentry->d_name, nip); | |
607 | if (error) | |
608 | goto out_gunlock; | |
609 | ||
b60623c2 | 610 | if (S_ISDIR(nip->i_inode.i_mode)) { |
b3b94faa DT |
611 | if (nip->i_di.di_entries < 2) { |
612 | if (gfs2_consist_inode(nip)) | |
4cc14f0b | 613 | gfs2_dinode_print(nip); |
b3b94faa DT |
614 | error = -EIO; |
615 | goto out_gunlock; | |
616 | } | |
617 | if (nip->i_di.di_entries > 2) { | |
618 | error = -ENOTEMPTY; | |
619 | goto out_gunlock; | |
620 | } | |
621 | } | |
622 | } else { | |
faf450ef | 623 | error = permission(ndir, MAY_WRITE | MAY_EXEC, NULL); |
b3b94faa DT |
624 | if (error) |
625 | goto out_gunlock; | |
626 | ||
c752666c | 627 | error = gfs2_dir_search(ndir, &ndentry->d_name, NULL, NULL); |
b3b94faa DT |
628 | switch (error) { |
629 | case -ENOENT: | |
630 | error = 0; | |
631 | break; | |
632 | case 0: | |
633 | error = -EEXIST; | |
634 | default: | |
635 | goto out_gunlock; | |
636 | }; | |
637 | ||
638 | if (odip != ndip) { | |
639 | if (!ndip->i_di.di_nlink) { | |
640 | error = -EINVAL; | |
641 | goto out_gunlock; | |
642 | } | |
cd915493 | 643 | if (ndip->i_di.di_entries == (u32)-1) { |
b3b94faa DT |
644 | error = -EFBIG; |
645 | goto out_gunlock; | |
646 | } | |
b60623c2 | 647 | if (S_ISDIR(ip->i_inode.i_mode) && |
cd915493 | 648 | ndip->i_di.di_nlink == (u32)-1) { |
b3b94faa DT |
649 | error = -EMLINK; |
650 | goto out_gunlock; | |
651 | } | |
652 | } | |
653 | } | |
654 | ||
655 | /* Check out the dir to be renamed */ | |
656 | ||
657 | if (dir_rename) { | |
faf450ef | 658 | error = permission(odentry->d_inode, MAY_WRITE, NULL); |
b3b94faa DT |
659 | if (error) |
660 | goto out_gunlock; | |
661 | } | |
662 | ||
c752666c SW |
663 | alloc_required = error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name); |
664 | if (error < 0) | |
b3b94faa | 665 | goto out_gunlock; |
c752666c | 666 | error = 0; |
b3b94faa DT |
667 | |
668 | if (alloc_required) { | |
669 | struct gfs2_alloc *al = gfs2_alloc_get(ndip); | |
670 | ||
671 | error = gfs2_quota_lock(ndip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE); | |
672 | if (error) | |
673 | goto out_alloc; | |
674 | ||
2933f925 | 675 | error = gfs2_quota_check(ndip, ndip->i_inode.i_uid, ndip->i_inode.i_gid); |
b3b94faa DT |
676 | if (error) |
677 | goto out_gunlock_q; | |
678 | ||
679 | al->al_requested = sdp->sd_max_dirres; | |
680 | ||
681 | error = gfs2_inplace_reserve(ndip); | |
682 | if (error) | |
683 | goto out_gunlock_q; | |
684 | ||
fe1bdedc | 685 | error = gfs2_trans_begin(sdp, sdp->sd_max_dirres + |
b3b94faa DT |
686 | al->al_rgd->rd_ri.ri_length + |
687 | 4 * RES_DINODE + 4 * RES_LEAF + | |
feaa7bba | 688 | RES_STATFS + RES_QUOTA, 0); |
b3b94faa DT |
689 | if (error) |
690 | goto out_ipreserv; | |
691 | } else { | |
692 | error = gfs2_trans_begin(sdp, 4 * RES_DINODE + | |
feaa7bba | 693 | 5 * RES_LEAF, 0); |
b3b94faa DT |
694 | if (error) |
695 | goto out_gunlock; | |
696 | } | |
697 | ||
698 | /* Remove the target file, if it exists */ | |
699 | ||
700 | if (nip) { | |
b60623c2 | 701 | if (S_ISDIR(nip->i_inode.i_mode)) |
feaa7bba SW |
702 | error = gfs2_rmdiri(ndip, &ndentry->d_name, nip); |
703 | else { | |
704 | error = gfs2_dir_del(ndip, &ndentry->d_name); | |
705 | if (error) | |
706 | goto out_end_trans; | |
707 | error = gfs2_change_nlink(nip, -1); | |
708 | } | |
b3b94faa DT |
709 | if (error) |
710 | goto out_end_trans; | |
711 | } | |
712 | ||
713 | if (dir_rename) { | |
714 | struct qstr name; | |
71b86f56 | 715 | gfs2_str2qstr(&name, ".."); |
b3b94faa DT |
716 | |
717 | error = gfs2_change_nlink(ndip, +1); | |
718 | if (error) | |
719 | goto out_end_trans; | |
720 | error = gfs2_change_nlink(odip, -1); | |
721 | if (error) | |
722 | goto out_end_trans; | |
723 | ||
724 | error = gfs2_dir_mvino(ip, &name, &ndip->i_num, DT_DIR); | |
725 | if (error) | |
726 | goto out_end_trans; | |
727 | } else { | |
728 | struct buffer_head *dibh; | |
729 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
730 | if (error) | |
731 | goto out_end_trans; | |
732 | ip->i_di.di_ctime = get_seconds(); | |
d4e9c4c3 | 733 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 734 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa DT |
735 | brelse(dibh); |
736 | } | |
737 | ||
738 | error = gfs2_dir_del(odip, &odentry->d_name); | |
739 | if (error) | |
740 | goto out_end_trans; | |
741 | ||
c752666c | 742 | error = gfs2_dir_add(ndir, &ndentry->d_name, &ip->i_num, |
b60623c2 | 743 | IF2DT(ip->i_inode.i_mode)); |
b3b94faa DT |
744 | if (error) |
745 | goto out_end_trans; | |
746 | ||
feaa7bba | 747 | out_end_trans: |
b3b94faa | 748 | gfs2_trans_end(sdp); |
feaa7bba | 749 | out_ipreserv: |
b3b94faa DT |
750 | if (alloc_required) |
751 | gfs2_inplace_release(ndip); | |
feaa7bba | 752 | out_gunlock_q: |
b3b94faa DT |
753 | if (alloc_required) |
754 | gfs2_quota_unlock(ndip); | |
feaa7bba | 755 | out_alloc: |
b3b94faa DT |
756 | if (alloc_required) |
757 | gfs2_alloc_put(ndip); | |
feaa7bba | 758 | out_gunlock: |
b3b94faa | 759 | gfs2_glock_dq_m(num_gh, ghs); |
feaa7bba | 760 | out_uninit: |
b3b94faa DT |
761 | for (x = 0; x < num_gh; x++) |
762 | gfs2_holder_uninit(ghs + x); | |
feaa7bba | 763 | out_gunlock_r: |
b3b94faa DT |
764 | if (dir_rename) |
765 | gfs2_glock_dq_uninit(&r_gh); | |
feaa7bba | 766 | out: |
b3b94faa DT |
767 | return error; |
768 | } | |
769 | ||
770 | /** | |
771 | * gfs2_readlink - Read the value of a symlink | |
772 | * @dentry: the symlink | |
773 | * @buf: the buffer to read the symlink data into | |
774 | * @size: the size of the buffer | |
775 | * | |
776 | * Returns: errno | |
777 | */ | |
778 | ||
779 | static int gfs2_readlink(struct dentry *dentry, char __user *user_buf, | |
780 | int user_size) | |
781 | { | |
feaa7bba | 782 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); |
b3b94faa DT |
783 | char array[GFS2_FAST_NAME_SIZE], *buf = array; |
784 | unsigned int len = GFS2_FAST_NAME_SIZE; | |
785 | int error; | |
786 | ||
b3b94faa DT |
787 | error = gfs2_readlinki(ip, &buf, &len); |
788 | if (error) | |
789 | return error; | |
790 | ||
791 | if (user_size > len - 1) | |
792 | user_size = len - 1; | |
793 | ||
794 | if (copy_to_user(user_buf, buf, user_size)) | |
795 | error = -EFAULT; | |
796 | else | |
797 | error = user_size; | |
798 | ||
799 | if (buf != array) | |
800 | kfree(buf); | |
801 | ||
802 | return error; | |
803 | } | |
804 | ||
805 | /** | |
806 | * gfs2_follow_link - Follow a symbolic link | |
807 | * @dentry: The dentry of the link | |
808 | * @nd: Data that we pass to vfs_follow_link() | |
809 | * | |
810 | * This can handle symlinks of any size. It is optimised for symlinks | |
811 | * under GFS2_FAST_NAME_SIZE. | |
812 | * | |
813 | * Returns: 0 on success or error code | |
814 | */ | |
815 | ||
816 | static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd) | |
817 | { | |
feaa7bba | 818 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); |
b3b94faa DT |
819 | char array[GFS2_FAST_NAME_SIZE], *buf = array; |
820 | unsigned int len = GFS2_FAST_NAME_SIZE; | |
821 | int error; | |
822 | ||
b3b94faa DT |
823 | error = gfs2_readlinki(ip, &buf, &len); |
824 | if (!error) { | |
825 | error = vfs_follow_link(nd, buf); | |
826 | if (buf != array) | |
827 | kfree(buf); | |
828 | } | |
829 | ||
830 | return ERR_PTR(error); | |
831 | } | |
832 | ||
833 | /** | |
834 | * gfs2_permission - | |
835 | * @inode: | |
836 | * @mask: | |
837 | * @nd: passed from Linux VFS, ignored by us | |
838 | * | |
839 | * Returns: errno | |
840 | */ | |
841 | ||
842 | static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd) | |
843 | { | |
feaa7bba | 844 | struct gfs2_inode *ip = GFS2_I(inode); |
b3b94faa DT |
845 | struct gfs2_holder i_gh; |
846 | int error; | |
847 | ||
b3b94faa DT |
848 | if (ip->i_vn == ip->i_gl->gl_vn) |
849 | return generic_permission(inode, mask, gfs2_check_acl); | |
850 | ||
faf450ef | 851 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); |
b3b94faa DT |
852 | if (!error) { |
853 | error = generic_permission(inode, mask, gfs2_check_acl_locked); | |
854 | gfs2_glock_dq_uninit(&i_gh); | |
855 | } | |
856 | ||
857 | return error; | |
858 | } | |
859 | ||
860 | static int setattr_size(struct inode *inode, struct iattr *attr) | |
861 | { | |
feaa7bba | 862 | struct gfs2_inode *ip = GFS2_I(inode); |
b3b94faa DT |
863 | int error; |
864 | ||
865 | if (attr->ia_size != ip->i_di.di_size) { | |
866 | error = vmtruncate(inode, attr->ia_size); | |
867 | if (error) | |
868 | return error; | |
869 | } | |
870 | ||
aa6a85a9 | 871 | error = gfs2_truncatei(ip, attr->ia_size); |
b3b94faa DT |
872 | if (error) |
873 | return error; | |
874 | ||
875 | return error; | |
876 | } | |
877 | ||
878 | static int setattr_chown(struct inode *inode, struct iattr *attr) | |
879 | { | |
feaa7bba SW |
880 | struct gfs2_inode *ip = GFS2_I(inode); |
881 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
b3b94faa | 882 | struct buffer_head *dibh; |
cd915493 | 883 | u32 ouid, ogid, nuid, ngid; |
b3b94faa DT |
884 | int error; |
885 | ||
2933f925 SW |
886 | ouid = inode->i_uid; |
887 | ogid = inode->i_gid; | |
b3b94faa DT |
888 | nuid = attr->ia_uid; |
889 | ngid = attr->ia_gid; | |
890 | ||
891 | if (!(attr->ia_valid & ATTR_UID) || ouid == nuid) | |
892 | ouid = nuid = NO_QUOTA_CHANGE; | |
893 | if (!(attr->ia_valid & ATTR_GID) || ogid == ngid) | |
894 | ogid = ngid = NO_QUOTA_CHANGE; | |
895 | ||
896 | gfs2_alloc_get(ip); | |
897 | ||
898 | error = gfs2_quota_lock(ip, nuid, ngid); | |
899 | if (error) | |
900 | goto out_alloc; | |
901 | ||
902 | if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) { | |
903 | error = gfs2_quota_check(ip, nuid, ngid); | |
904 | if (error) | |
905 | goto out_gunlock_q; | |
906 | } | |
907 | ||
908 | error = gfs2_trans_begin(sdp, RES_DINODE + 2 * RES_QUOTA, 0); | |
909 | if (error) | |
910 | goto out_gunlock_q; | |
911 | ||
912 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
913 | if (error) | |
914 | goto out_end_trans; | |
915 | ||
916 | error = inode_setattr(inode, attr); | |
917 | gfs2_assert_warn(sdp, !error); | |
918 | gfs2_inode_attr_out(ip); | |
919 | ||
d4e9c4c3 | 920 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 921 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa DT |
922 | brelse(dibh); |
923 | ||
924 | if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) { | |
af18ddb8 SW |
925 | gfs2_quota_change(ip, -ip->i_di.di_blocks, ouid, ogid); |
926 | gfs2_quota_change(ip, ip->i_di.di_blocks, nuid, ngid); | |
b3b94faa DT |
927 | } |
928 | ||
a91ea69f | 929 | out_end_trans: |
b3b94faa | 930 | gfs2_trans_end(sdp); |
a91ea69f | 931 | out_gunlock_q: |
b3b94faa | 932 | gfs2_quota_unlock(ip); |
a91ea69f | 933 | out_alloc: |
b3b94faa | 934 | gfs2_alloc_put(ip); |
b3b94faa DT |
935 | return error; |
936 | } | |
937 | ||
938 | /** | |
939 | * gfs2_setattr - Change attributes on an inode | |
940 | * @dentry: The dentry which is changing | |
941 | * @attr: The structure describing the change | |
942 | * | |
943 | * The VFS layer wants to change one or more of an inodes attributes. Write | |
944 | * that change out to disk. | |
945 | * | |
946 | * Returns: errno | |
947 | */ | |
948 | ||
949 | static int gfs2_setattr(struct dentry *dentry, struct iattr *attr) | |
950 | { | |
951 | struct inode *inode = dentry->d_inode; | |
feaa7bba | 952 | struct gfs2_inode *ip = GFS2_I(inode); |
b3b94faa DT |
953 | struct gfs2_holder i_gh; |
954 | int error; | |
955 | ||
b3b94faa DT |
956 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh); |
957 | if (error) | |
958 | return error; | |
959 | ||
960 | error = -EPERM; | |
961 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) | |
962 | goto out; | |
963 | ||
964 | error = inode_change_ok(inode, attr); | |
965 | if (error) | |
966 | goto out; | |
967 | ||
968 | if (attr->ia_valid & ATTR_SIZE) | |
969 | error = setattr_size(inode, attr); | |
970 | else if (attr->ia_valid & (ATTR_UID | ATTR_GID)) | |
971 | error = setattr_chown(inode, attr); | |
972 | else if ((attr->ia_valid & ATTR_MODE) && IS_POSIXACL(inode)) | |
973 | error = gfs2_acl_chmod(ip, attr); | |
974 | else | |
975 | error = gfs2_setattr_simple(ip, attr); | |
976 | ||
a91ea69f | 977 | out: |
b3b94faa | 978 | gfs2_glock_dq_uninit(&i_gh); |
b3b94faa DT |
979 | if (!error) |
980 | mark_inode_dirty(inode); | |
b3b94faa DT |
981 | return error; |
982 | } | |
983 | ||
984 | /** | |
985 | * gfs2_getattr - Read out an inode's attributes | |
26c1a574 | 986 | * @mnt: The vfsmount the inode is being accessed from |
b3b94faa DT |
987 | * @dentry: The dentry to stat |
988 | * @stat: The inode's stats | |
989 | * | |
990 | * Returns: errno | |
991 | */ | |
992 | ||
993 | static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry, | |
994 | struct kstat *stat) | |
995 | { | |
996 | struct inode *inode = dentry->d_inode; | |
feaa7bba | 997 | struct gfs2_inode *ip = GFS2_I(inode); |
b3b94faa DT |
998 | struct gfs2_holder gh; |
999 | int error; | |
1000 | ||
b3b94faa DT |
1001 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); |
1002 | if (!error) { | |
1003 | generic_fillattr(inode, stat); | |
1004 | gfs2_glock_dq_uninit(&gh); | |
1005 | } | |
1006 | ||
1007 | return error; | |
1008 | } | |
1009 | ||
1010 | static int gfs2_setxattr(struct dentry *dentry, const char *name, | |
1011 | const void *data, size_t size, int flags) | |
1012 | { | |
feaa7bba | 1013 | struct inode *inode = dentry->d_inode; |
b3b94faa DT |
1014 | struct gfs2_ea_request er; |
1015 | ||
b3b94faa DT |
1016 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
1017 | er.er_type = gfs2_ea_name2type(name, &er.er_name); | |
1018 | if (er.er_type == GFS2_EATYPE_UNUSED) | |
1019 | return -EOPNOTSUPP; | |
1020 | er.er_data = (char *)data; | |
1021 | er.er_name_len = strlen(er.er_name); | |
1022 | er.er_data_len = size; | |
1023 | er.er_flags = flags; | |
1024 | ||
feaa7bba | 1025 | gfs2_assert_warn(GFS2_SB(inode), !(er.er_flags & GFS2_ERF_MODE)); |
b3b94faa | 1026 | |
feaa7bba | 1027 | return gfs2_ea_set(GFS2_I(inode), &er); |
b3b94faa DT |
1028 | } |
1029 | ||
1030 | static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name, | |
1031 | void *data, size_t size) | |
1032 | { | |
1033 | struct gfs2_ea_request er; | |
1034 | ||
b3b94faa DT |
1035 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
1036 | er.er_type = gfs2_ea_name2type(name, &er.er_name); | |
1037 | if (er.er_type == GFS2_EATYPE_UNUSED) | |
1038 | return -EOPNOTSUPP; | |
1039 | er.er_data = data; | |
1040 | er.er_name_len = strlen(er.er_name); | |
1041 | er.er_data_len = size; | |
1042 | ||
feaa7bba | 1043 | return gfs2_ea_get(GFS2_I(dentry->d_inode), &er); |
b3b94faa DT |
1044 | } |
1045 | ||
1046 | static ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size) | |
1047 | { | |
1048 | struct gfs2_ea_request er; | |
1049 | ||
b3b94faa DT |
1050 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
1051 | er.er_data = (size) ? buffer : NULL; | |
1052 | er.er_data_len = size; | |
1053 | ||
feaa7bba | 1054 | return gfs2_ea_list(GFS2_I(dentry->d_inode), &er); |
b3b94faa DT |
1055 | } |
1056 | ||
1057 | static int gfs2_removexattr(struct dentry *dentry, const char *name) | |
1058 | { | |
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_name_len = strlen(er.er_name); | |
1066 | ||
feaa7bba | 1067 | return gfs2_ea_remove(GFS2_I(dentry->d_inode), &er); |
b3b94faa DT |
1068 | } |
1069 | ||
1070 | struct inode_operations gfs2_file_iops = { | |
1071 | .permission = gfs2_permission, | |
1072 | .setattr = gfs2_setattr, | |
1073 | .getattr = gfs2_getattr, | |
1074 | .setxattr = gfs2_setxattr, | |
1075 | .getxattr = gfs2_getxattr, | |
1076 | .listxattr = gfs2_listxattr, | |
1077 | .removexattr = gfs2_removexattr, | |
1078 | }; | |
1079 | ||
1080 | struct inode_operations gfs2_dev_iops = { | |
1081 | .permission = gfs2_permission, | |
1082 | .setattr = gfs2_setattr, | |
1083 | .getattr = gfs2_getattr, | |
1084 | .setxattr = gfs2_setxattr, | |
1085 | .getxattr = gfs2_getxattr, | |
1086 | .listxattr = gfs2_listxattr, | |
1087 | .removexattr = gfs2_removexattr, | |
1088 | }; | |
1089 | ||
1090 | struct inode_operations gfs2_dir_iops = { | |
1091 | .create = gfs2_create, | |
1092 | .lookup = gfs2_lookup, | |
1093 | .link = gfs2_link, | |
1094 | .unlink = gfs2_unlink, | |
1095 | .symlink = gfs2_symlink, | |
1096 | .mkdir = gfs2_mkdir, | |
1097 | .rmdir = gfs2_rmdir, | |
1098 | .mknod = gfs2_mknod, | |
1099 | .rename = gfs2_rename, | |
1100 | .permission = gfs2_permission, | |
1101 | .setattr = gfs2_setattr, | |
1102 | .getattr = gfs2_getattr, | |
1103 | .setxattr = gfs2_setxattr, | |
1104 | .getxattr = gfs2_getxattr, | |
1105 | .listxattr = gfs2_listxattr, | |
1106 | .removexattr = gfs2_removexattr, | |
1107 | }; | |
1108 | ||
1109 | struct inode_operations gfs2_symlink_iops = { | |
1110 | .readlink = gfs2_readlink, | |
1111 | .follow_link = gfs2_follow_link, | |
1112 | .permission = gfs2_permission, | |
1113 | .setattr = gfs2_setattr, | |
1114 | .getattr = gfs2_getattr, | |
1115 | .setxattr = gfs2_setxattr, | |
1116 | .getxattr = gfs2_getxattr, | |
1117 | .listxattr = gfs2_listxattr, | |
1118 | .removexattr = gfs2_removexattr, | |
1119 | }; | |
1120 |