Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 LT |
18 | #include "xfs.h" |
19 | #include "xfs_fs.h" | |
ef14f0c1 | 20 | #include "xfs_acl.h" |
a844f451 | 21 | #include "xfs_bit.h" |
1da177e4 | 22 | #include "xfs_log.h" |
a844f451 | 23 | #include "xfs_inum.h" |
1da177e4 LT |
24 | #include "xfs_trans.h" |
25 | #include "xfs_sb.h" | |
26 | #include "xfs_ag.h" | |
1da177e4 | 27 | #include "xfs_alloc.h" |
1da177e4 LT |
28 | #include "xfs_quota.h" |
29 | #include "xfs_mount.h" | |
1da177e4 | 30 | #include "xfs_bmap_btree.h" |
1da177e4 LT |
31 | #include "xfs_dinode.h" |
32 | #include "xfs_inode.h" | |
33 | #include "xfs_bmap.h" | |
1da177e4 LT |
34 | #include "xfs_rtalloc.h" |
35 | #include "xfs_error.h" | |
36 | #include "xfs_itable.h" | |
37 | #include "xfs_rw.h" | |
1da177e4 LT |
38 | #include "xfs_attr.h" |
39 | #include "xfs_buf_item.h" | |
40 | #include "xfs_utils.h" | |
739bfb2a | 41 | #include "xfs_vnodeops.h" |
c4ed4243 | 42 | #include "xfs_inode_item.h" |
0b1b213f | 43 | #include "xfs_trace.h" |
1da177e4 | 44 | |
16f7e0fe | 45 | #include <linux/capability.h> |
1da177e4 LT |
46 | #include <linux/xattr.h> |
47 | #include <linux/namei.h> | |
ef14f0c1 | 48 | #include <linux/posix_acl.h> |
446ada4a | 49 | #include <linux/security.h> |
f35642e2 | 50 | #include <linux/fiemap.h> |
5a0e3ad6 | 51 | #include <linux/slab.h> |
1da177e4 | 52 | |
42fe2b1f | 53 | /* |
f9581b14 CH |
54 | * Bring the timestamps in the XFS inode uptodate. |
55 | * | |
56 | * Used before writing the inode to disk. | |
42fe2b1f CH |
57 | */ |
58 | void | |
f9581b14 | 59 | xfs_synchronize_times( |
42fe2b1f CH |
60 | xfs_inode_t *ip) |
61 | { | |
01651646 | 62 | struct inode *inode = VFS_I(ip); |
42fe2b1f | 63 | |
f9581b14 CH |
64 | ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec; |
65 | ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec; | |
66 | ip->i_d.di_ctime.t_sec = (__int32_t)inode->i_ctime.tv_sec; | |
67 | ip->i_d.di_ctime.t_nsec = (__int32_t)inode->i_ctime.tv_nsec; | |
68 | ip->i_d.di_mtime.t_sec = (__int32_t)inode->i_mtime.tv_sec; | |
69 | ip->i_d.di_mtime.t_nsec = (__int32_t)inode->i_mtime.tv_nsec; | |
42fe2b1f CH |
70 | } |
71 | ||
5d51eff4 | 72 | /* |
866e4ed7 CH |
73 | * If the linux inode is valid, mark it dirty, else mark the dirty state |
74 | * in the XFS inode to make sure we pick it up when reclaiming the inode. | |
5d51eff4 DC |
75 | */ |
76 | void | |
77 | xfs_mark_inode_dirty_sync( | |
78 | xfs_inode_t *ip) | |
79 | { | |
01651646 | 80 | struct inode *inode = VFS_I(ip); |
5d51eff4 | 81 | |
a4ffdde6 | 82 | if (!(inode->i_state & (I_WILL_FREE|I_FREEING))) |
af048193 | 83 | mark_inode_dirty_sync(inode); |
866e4ed7 CH |
84 | else { |
85 | barrier(); | |
86 | ip->i_update_core = 1; | |
87 | } | |
5d51eff4 DC |
88 | } |
89 | ||
66d834ea CH |
90 | void |
91 | xfs_mark_inode_dirty( | |
92 | xfs_inode_t *ip) | |
93 | { | |
94 | struct inode *inode = VFS_I(ip); | |
95 | ||
a4ffdde6 | 96 | if (!(inode->i_state & (I_WILL_FREE|I_FREEING))) |
66d834ea | 97 | mark_inode_dirty(inode); |
866e4ed7 CH |
98 | else { |
99 | barrier(); | |
100 | ip->i_update_core = 1; | |
101 | } | |
102 | ||
66d834ea CH |
103 | } |
104 | ||
446ada4a NS |
105 | /* |
106 | * Hook in SELinux. This is not quite correct yet, what we really need | |
107 | * here (as we do for default ACLs) is a mechanism by which creation of | |
108 | * these attrs can be journalled at inode creation time (along with the | |
109 | * inode, of course, such that log replay can't cause these to be lost). | |
110 | */ | |
111 | STATIC int | |
416c6d5b | 112 | xfs_init_security( |
af048193 | 113 | struct inode *inode, |
2a7dba39 EP |
114 | struct inode *dir, |
115 | const struct qstr *qstr) | |
446ada4a | 116 | { |
af048193 | 117 | struct xfs_inode *ip = XFS_I(inode); |
446ada4a NS |
118 | size_t length; |
119 | void *value; | |
a9273ca5 | 120 | unsigned char *name; |
446ada4a NS |
121 | int error; |
122 | ||
2a7dba39 | 123 | error = security_inode_init_security(inode, dir, qstr, (char **)&name, |
af048193 | 124 | &value, &length); |
446ada4a NS |
125 | if (error) { |
126 | if (error == -EOPNOTSUPP) | |
127 | return 0; | |
128 | return -error; | |
129 | } | |
130 | ||
af048193 | 131 | error = xfs_attr_set(ip, name, value, length, ATTR_SECURE); |
446ada4a NS |
132 | |
133 | kfree(name); | |
134 | kfree(value); | |
135 | return error; | |
136 | } | |
137 | ||
556b8b16 BN |
138 | static void |
139 | xfs_dentry_to_name( | |
140 | struct xfs_name *namep, | |
141 | struct dentry *dentry) | |
142 | { | |
143 | namep->name = dentry->d_name.name; | |
144 | namep->len = dentry->d_name.len; | |
145 | } | |
146 | ||
7989cb8e | 147 | STATIC void |
416c6d5b | 148 | xfs_cleanup_inode( |
739bfb2a | 149 | struct inode *dir, |
af048193 | 150 | struct inode *inode, |
8f112e3b | 151 | struct dentry *dentry) |
3a69c7dc | 152 | { |
556b8b16 | 153 | struct xfs_name teardown; |
3a69c7dc YL |
154 | |
155 | /* Oh, the horror. | |
220b5284 | 156 | * If we can't add the ACL or we fail in |
416c6d5b | 157 | * xfs_init_security we must back out. |
3a69c7dc YL |
158 | * ENOSPC can hit here, among other things. |
159 | */ | |
556b8b16 | 160 | xfs_dentry_to_name(&teardown, dentry); |
3a69c7dc | 161 | |
8f112e3b | 162 | xfs_remove(XFS_I(dir), &teardown, XFS_I(inode)); |
af048193 | 163 | iput(inode); |
3a69c7dc YL |
164 | } |
165 | ||
1da177e4 | 166 | STATIC int |
416c6d5b | 167 | xfs_vn_mknod( |
1da177e4 LT |
168 | struct inode *dir, |
169 | struct dentry *dentry, | |
170 | int mode, | |
171 | dev_t rdev) | |
172 | { | |
db0bb7ba | 173 | struct inode *inode; |
979ebab1 | 174 | struct xfs_inode *ip = NULL; |
ef14f0c1 | 175 | struct posix_acl *default_acl = NULL; |
556b8b16 | 176 | struct xfs_name name; |
1da177e4 LT |
177 | int error; |
178 | ||
179 | /* | |
180 | * Irix uses Missed'em'V split, but doesn't want to see | |
181 | * the upper 5 bits of (14bit) major. | |
182 | */ | |
517b5e8c CH |
183 | if (S_ISCHR(mode) || S_ISBLK(mode)) { |
184 | if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) | |
185 | return -EINVAL; | |
186 | rdev = sysv_encode_dev(rdev); | |
187 | } else { | |
188 | rdev = 0; | |
189 | } | |
1da177e4 | 190 | |
ef14f0c1 CH |
191 | if (IS_POSIXACL(dir)) { |
192 | default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT); | |
193 | if (IS_ERR(default_acl)) | |
c46a131c | 194 | return PTR_ERR(default_acl); |
1da177e4 | 195 | |
e83f1eb6 CH |
196 | if (!default_acl) |
197 | mode &= ~current_umask(); | |
ef14f0c1 | 198 | } |
1da177e4 | 199 | |
517b5e8c | 200 | xfs_dentry_to_name(&name, dentry); |
6c77b0ea | 201 | error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip); |
db0bb7ba CH |
202 | if (unlikely(error)) |
203 | goto out_free_acl; | |
446ada4a | 204 | |
01651646 | 205 | inode = VFS_I(ip); |
979ebab1 | 206 | |
2a7dba39 | 207 | error = xfs_init_security(inode, dir, &dentry->d_name); |
db0bb7ba CH |
208 | if (unlikely(error)) |
209 | goto out_cleanup_inode; | |
210 | ||
211 | if (default_acl) { | |
ef14f0c1 | 212 | error = -xfs_inherit_acl(inode, default_acl); |
826cae2f | 213 | default_acl = NULL; |
db0bb7ba CH |
214 | if (unlikely(error)) |
215 | goto out_cleanup_inode; | |
1da177e4 LT |
216 | } |
217 | ||
1da177e4 | 218 | |
db0bb7ba | 219 | d_instantiate(dentry, inode); |
db0bb7ba CH |
220 | return -error; |
221 | ||
222 | out_cleanup_inode: | |
8f112e3b | 223 | xfs_cleanup_inode(dir, inode, dentry); |
db0bb7ba | 224 | out_free_acl: |
ef14f0c1 | 225 | posix_acl_release(default_acl); |
1da177e4 LT |
226 | return -error; |
227 | } | |
228 | ||
229 | STATIC int | |
416c6d5b | 230 | xfs_vn_create( |
1da177e4 LT |
231 | struct inode *dir, |
232 | struct dentry *dentry, | |
233 | int mode, | |
234 | struct nameidata *nd) | |
235 | { | |
416c6d5b | 236 | return xfs_vn_mknod(dir, dentry, mode, 0); |
1da177e4 LT |
237 | } |
238 | ||
239 | STATIC int | |
416c6d5b | 240 | xfs_vn_mkdir( |
1da177e4 LT |
241 | struct inode *dir, |
242 | struct dentry *dentry, | |
243 | int mode) | |
244 | { | |
416c6d5b | 245 | return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0); |
1da177e4 LT |
246 | } |
247 | ||
248 | STATIC struct dentry * | |
416c6d5b | 249 | xfs_vn_lookup( |
1da177e4 LT |
250 | struct inode *dir, |
251 | struct dentry *dentry, | |
252 | struct nameidata *nd) | |
253 | { | |
ef1f5e7a | 254 | struct xfs_inode *cip; |
556b8b16 | 255 | struct xfs_name name; |
1da177e4 LT |
256 | int error; |
257 | ||
258 | if (dentry->d_name.len >= MAXNAMELEN) | |
259 | return ERR_PTR(-ENAMETOOLONG); | |
260 | ||
556b8b16 | 261 | xfs_dentry_to_name(&name, dentry); |
384f3ced | 262 | error = xfs_lookup(XFS_I(dir), &name, &cip, NULL); |
67fcaa73 | 263 | if (unlikely(error)) { |
1da177e4 LT |
264 | if (unlikely(error != ENOENT)) |
265 | return ERR_PTR(-error); | |
266 | d_add(dentry, NULL); | |
267 | return NULL; | |
268 | } | |
269 | ||
01651646 | 270 | return d_splice_alias(VFS_I(cip), dentry); |
1da177e4 LT |
271 | } |
272 | ||
384f3ced BN |
273 | STATIC struct dentry * |
274 | xfs_vn_ci_lookup( | |
275 | struct inode *dir, | |
276 | struct dentry *dentry, | |
277 | struct nameidata *nd) | |
278 | { | |
279 | struct xfs_inode *ip; | |
280 | struct xfs_name xname; | |
281 | struct xfs_name ci_name; | |
282 | struct qstr dname; | |
283 | int error; | |
284 | ||
285 | if (dentry->d_name.len >= MAXNAMELEN) | |
286 | return ERR_PTR(-ENAMETOOLONG); | |
287 | ||
288 | xfs_dentry_to_name(&xname, dentry); | |
289 | error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name); | |
290 | if (unlikely(error)) { | |
291 | if (unlikely(error != ENOENT)) | |
292 | return ERR_PTR(-error); | |
866d5dc9 BN |
293 | /* |
294 | * call d_add(dentry, NULL) here when d_drop_negative_children | |
295 | * is called in xfs_vn_mknod (ie. allow negative dentries | |
296 | * with CI filesystems). | |
297 | */ | |
384f3ced BN |
298 | return NULL; |
299 | } | |
300 | ||
301 | /* if exact match, just splice and exit */ | |
302 | if (!ci_name.name) | |
01651646 | 303 | return d_splice_alias(VFS_I(ip), dentry); |
384f3ced BN |
304 | |
305 | /* else case-insensitive match... */ | |
306 | dname.name = ci_name.name; | |
307 | dname.len = ci_name.len; | |
e45b590b | 308 | dentry = d_add_ci(dentry, VFS_I(ip), &dname); |
384f3ced BN |
309 | kmem_free(ci_name.name); |
310 | return dentry; | |
311 | } | |
312 | ||
1da177e4 | 313 | STATIC int |
416c6d5b | 314 | xfs_vn_link( |
1da177e4 LT |
315 | struct dentry *old_dentry, |
316 | struct inode *dir, | |
317 | struct dentry *dentry) | |
318 | { | |
d9424b3c | 319 | struct inode *inode = old_dentry->d_inode; |
556b8b16 | 320 | struct xfs_name name; |
1da177e4 LT |
321 | int error; |
322 | ||
556b8b16 | 323 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 324 | |
556b8b16 | 325 | error = xfs_link(XFS_I(dir), XFS_I(inode), &name); |
d9424b3c | 326 | if (unlikely(error)) |
a3da7896 | 327 | return -error; |
a3da7896 | 328 | |
7de9c6ee | 329 | ihold(inode); |
a3da7896 CH |
330 | d_instantiate(dentry, inode); |
331 | return 0; | |
1da177e4 LT |
332 | } |
333 | ||
334 | STATIC int | |
416c6d5b | 335 | xfs_vn_unlink( |
1da177e4 LT |
336 | struct inode *dir, |
337 | struct dentry *dentry) | |
338 | { | |
556b8b16 | 339 | struct xfs_name name; |
1da177e4 LT |
340 | int error; |
341 | ||
556b8b16 | 342 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 343 | |
e5700704 CH |
344 | error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode)); |
345 | if (error) | |
346 | return error; | |
347 | ||
348 | /* | |
349 | * With unlink, the VFS makes the dentry "negative": no inode, | |
350 | * but still hashed. This is incompatible with case-insensitive | |
351 | * mode, so invalidate (unhash) the dentry in CI-mode. | |
352 | */ | |
353 | if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb)) | |
354 | d_invalidate(dentry); | |
355 | return 0; | |
1da177e4 LT |
356 | } |
357 | ||
358 | STATIC int | |
416c6d5b | 359 | xfs_vn_symlink( |
1da177e4 LT |
360 | struct inode *dir, |
361 | struct dentry *dentry, | |
362 | const char *symname) | |
363 | { | |
3937be5b CH |
364 | struct inode *inode; |
365 | struct xfs_inode *cip = NULL; | |
556b8b16 | 366 | struct xfs_name name; |
1da177e4 | 367 | int error; |
3e5daf05 | 368 | mode_t mode; |
1da177e4 | 369 | |
3e5daf05 | 370 | mode = S_IFLNK | |
ce3b0f8d | 371 | (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO); |
556b8b16 | 372 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 373 | |
6c77b0ea | 374 | error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip); |
3937be5b CH |
375 | if (unlikely(error)) |
376 | goto out; | |
377 | ||
01651646 | 378 | inode = VFS_I(cip); |
3937be5b | 379 | |
2a7dba39 | 380 | error = xfs_init_security(inode, dir, &dentry->d_name); |
3937be5b CH |
381 | if (unlikely(error)) |
382 | goto out_cleanup_inode; | |
383 | ||
384 | d_instantiate(dentry, inode); | |
3937be5b CH |
385 | return 0; |
386 | ||
387 | out_cleanup_inode: | |
8f112e3b | 388 | xfs_cleanup_inode(dir, inode, dentry); |
3937be5b | 389 | out: |
1da177e4 LT |
390 | return -error; |
391 | } | |
392 | ||
1da177e4 | 393 | STATIC int |
416c6d5b | 394 | xfs_vn_rename( |
1da177e4 LT |
395 | struct inode *odir, |
396 | struct dentry *odentry, | |
397 | struct inode *ndir, | |
398 | struct dentry *ndentry) | |
399 | { | |
400 | struct inode *new_inode = ndentry->d_inode; | |
556b8b16 BN |
401 | struct xfs_name oname; |
402 | struct xfs_name nname; | |
1da177e4 | 403 | |
556b8b16 BN |
404 | xfs_dentry_to_name(&oname, odentry); |
405 | xfs_dentry_to_name(&nname, ndentry); | |
406 | ||
e5700704 | 407 | return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode), |
cfa853e4 CH |
408 | XFS_I(ndir), &nname, new_inode ? |
409 | XFS_I(new_inode) : NULL); | |
1da177e4 LT |
410 | } |
411 | ||
412 | /* | |
413 | * careful here - this function can get called recursively, so | |
414 | * we need to be very careful about how much stack we use. | |
415 | * uio is kmalloced for this reason... | |
416 | */ | |
008b150a | 417 | STATIC void * |
416c6d5b | 418 | xfs_vn_follow_link( |
1da177e4 LT |
419 | struct dentry *dentry, |
420 | struct nameidata *nd) | |
421 | { | |
1da177e4 | 422 | char *link; |
804c83c3 | 423 | int error = -ENOMEM; |
1da177e4 | 424 | |
f52720ca | 425 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
804c83c3 CH |
426 | if (!link) |
427 | goto out_err; | |
1da177e4 | 428 | |
739bfb2a | 429 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
804c83c3 CH |
430 | if (unlikely(error)) |
431 | goto out_kfree; | |
1da177e4 LT |
432 | |
433 | nd_set_link(nd, link); | |
008b150a | 434 | return NULL; |
804c83c3 CH |
435 | |
436 | out_kfree: | |
437 | kfree(link); | |
438 | out_err: | |
439 | nd_set_link(nd, ERR_PTR(error)); | |
440 | return NULL; | |
1da177e4 LT |
441 | } |
442 | ||
cde410a9 | 443 | STATIC void |
416c6d5b | 444 | xfs_vn_put_link( |
cde410a9 NS |
445 | struct dentry *dentry, |
446 | struct nameidata *nd, | |
447 | void *p) | |
1da177e4 | 448 | { |
cde410a9 NS |
449 | char *s = nd_get_link(nd); |
450 | ||
1da177e4 LT |
451 | if (!IS_ERR(s)) |
452 | kfree(s); | |
453 | } | |
454 | ||
1da177e4 | 455 | STATIC int |
416c6d5b | 456 | xfs_vn_getattr( |
c43f4087 CH |
457 | struct vfsmount *mnt, |
458 | struct dentry *dentry, | |
459 | struct kstat *stat) | |
1da177e4 | 460 | { |
c43f4087 CH |
461 | struct inode *inode = dentry->d_inode; |
462 | struct xfs_inode *ip = XFS_I(inode); | |
463 | struct xfs_mount *mp = ip->i_mount; | |
464 | ||
cca28fb8 | 465 | trace_xfs_getattr(ip); |
c43f4087 CH |
466 | |
467 | if (XFS_FORCED_SHUTDOWN(mp)) | |
468 | return XFS_ERROR(EIO); | |
469 | ||
470 | stat->size = XFS_ISIZE(ip); | |
471 | stat->dev = inode->i_sb->s_dev; | |
472 | stat->mode = ip->i_d.di_mode; | |
473 | stat->nlink = ip->i_d.di_nlink; | |
474 | stat->uid = ip->i_d.di_uid; | |
475 | stat->gid = ip->i_d.di_gid; | |
476 | stat->ino = ip->i_ino; | |
c43f4087 | 477 | stat->atime = inode->i_atime; |
f9581b14 CH |
478 | stat->mtime = inode->i_mtime; |
479 | stat->ctime = inode->i_ctime; | |
c43f4087 CH |
480 | stat->blocks = |
481 | XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks); | |
482 | ||
483 | ||
484 | switch (inode->i_mode & S_IFMT) { | |
485 | case S_IFBLK: | |
486 | case S_IFCHR: | |
487 | stat->blksize = BLKDEV_IOSIZE; | |
488 | stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
489 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
490 | break; | |
491 | default: | |
71ddabb9 | 492 | if (XFS_IS_REALTIME_INODE(ip)) { |
c43f4087 CH |
493 | /* |
494 | * If the file blocks are being allocated from a | |
495 | * realtime volume, then return the inode's realtime | |
496 | * extent size or the realtime volume's extent size. | |
497 | */ | |
498 | stat->blksize = | |
499 | xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog; | |
500 | } else | |
501 | stat->blksize = xfs_preferred_iosize(mp); | |
502 | stat->rdev = 0; | |
503 | break; | |
69e23b9a | 504 | } |
c43f4087 CH |
505 | |
506 | return 0; | |
1da177e4 LT |
507 | } |
508 | ||
c4ed4243 CH |
509 | int |
510 | xfs_setattr_nonsize( | |
511 | struct xfs_inode *ip, | |
512 | struct iattr *iattr, | |
513 | int flags) | |
514 | { | |
515 | xfs_mount_t *mp = ip->i_mount; | |
516 | struct inode *inode = VFS_I(ip); | |
517 | int mask = iattr->ia_valid; | |
518 | xfs_trans_t *tp; | |
519 | int error; | |
520 | uid_t uid = 0, iuid = 0; | |
521 | gid_t gid = 0, igid = 0; | |
522 | struct xfs_dquot *udqp = NULL, *gdqp = NULL; | |
523 | struct xfs_dquot *olddquot1 = NULL, *olddquot2 = NULL; | |
524 | ||
525 | trace_xfs_setattr(ip); | |
526 | ||
527 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
528 | return XFS_ERROR(EROFS); | |
529 | ||
530 | if (XFS_FORCED_SHUTDOWN(mp)) | |
531 | return XFS_ERROR(EIO); | |
532 | ||
533 | error = -inode_change_ok(inode, iattr); | |
534 | if (error) | |
535 | return XFS_ERROR(error); | |
536 | ||
537 | ASSERT((mask & ATTR_SIZE) == 0); | |
538 | ||
539 | /* | |
540 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
541 | * before we start any other transactions. Trying to do this later | |
542 | * is messy. We don't care to take a readlock to look at the ids | |
543 | * in inode here, because we can't hold it across the trans_reserve. | |
544 | * If the IDs do change before we take the ilock, we're covered | |
545 | * because the i_*dquot fields will get updated anyway. | |
546 | */ | |
547 | if (XFS_IS_QUOTA_ON(mp) && (mask & (ATTR_UID|ATTR_GID))) { | |
548 | uint qflags = 0; | |
549 | ||
550 | if ((mask & ATTR_UID) && XFS_IS_UQUOTA_ON(mp)) { | |
551 | uid = iattr->ia_uid; | |
552 | qflags |= XFS_QMOPT_UQUOTA; | |
553 | } else { | |
554 | uid = ip->i_d.di_uid; | |
555 | } | |
556 | if ((mask & ATTR_GID) && XFS_IS_GQUOTA_ON(mp)) { | |
557 | gid = iattr->ia_gid; | |
558 | qflags |= XFS_QMOPT_GQUOTA; | |
559 | } else { | |
560 | gid = ip->i_d.di_gid; | |
561 | } | |
562 | ||
563 | /* | |
564 | * We take a reference when we initialize udqp and gdqp, | |
565 | * so it is important that we never blindly double trip on | |
566 | * the same variable. See xfs_create() for an example. | |
567 | */ | |
568 | ASSERT(udqp == NULL); | |
569 | ASSERT(gdqp == NULL); | |
570 | error = xfs_qm_vop_dqalloc(ip, uid, gid, xfs_get_projid(ip), | |
571 | qflags, &udqp, &gdqp); | |
572 | if (error) | |
573 | return error; | |
574 | } | |
575 | ||
576 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
577 | error = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); | |
578 | if (error) | |
579 | goto out_dqrele; | |
580 | ||
581 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
582 | ||
583 | /* | |
584 | * Change file ownership. Must be the owner or privileged. | |
585 | */ | |
586 | if (mask & (ATTR_UID|ATTR_GID)) { | |
587 | /* | |
588 | * These IDs could have changed since we last looked at them. | |
589 | * But, we're assured that if the ownership did change | |
590 | * while we didn't have the inode locked, inode's dquot(s) | |
591 | * would have changed also. | |
592 | */ | |
593 | iuid = ip->i_d.di_uid; | |
594 | igid = ip->i_d.di_gid; | |
595 | gid = (mask & ATTR_GID) ? iattr->ia_gid : igid; | |
596 | uid = (mask & ATTR_UID) ? iattr->ia_uid : iuid; | |
597 | ||
598 | /* | |
599 | * Do a quota reservation only if uid/gid is actually | |
600 | * going to change. | |
601 | */ | |
602 | if (XFS_IS_QUOTA_RUNNING(mp) && | |
603 | ((XFS_IS_UQUOTA_ON(mp) && iuid != uid) || | |
604 | (XFS_IS_GQUOTA_ON(mp) && igid != gid))) { | |
605 | ASSERT(tp); | |
606 | error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, | |
607 | capable(CAP_FOWNER) ? | |
608 | XFS_QMOPT_FORCE_RES : 0); | |
609 | if (error) /* out of quota */ | |
610 | goto out_trans_cancel; | |
611 | } | |
612 | } | |
613 | ||
614 | xfs_trans_ijoin(tp, ip); | |
615 | ||
616 | /* | |
617 | * Change file ownership. Must be the owner or privileged. | |
618 | */ | |
619 | if (mask & (ATTR_UID|ATTR_GID)) { | |
620 | /* | |
621 | * CAP_FSETID overrides the following restrictions: | |
622 | * | |
623 | * The set-user-ID and set-group-ID bits of a file will be | |
624 | * cleared upon successful return from chown() | |
625 | */ | |
626 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
627 | !capable(CAP_FSETID)) | |
628 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
629 | ||
630 | /* | |
631 | * Change the ownerships and register quota modifications | |
632 | * in the transaction. | |
633 | */ | |
634 | if (iuid != uid) { | |
635 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_UQUOTA_ON(mp)) { | |
636 | ASSERT(mask & ATTR_UID); | |
637 | ASSERT(udqp); | |
638 | olddquot1 = xfs_qm_vop_chown(tp, ip, | |
639 | &ip->i_udquot, udqp); | |
640 | } | |
641 | ip->i_d.di_uid = uid; | |
642 | inode->i_uid = uid; | |
643 | } | |
644 | if (igid != gid) { | |
645 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_GQUOTA_ON(mp)) { | |
646 | ASSERT(!XFS_IS_PQUOTA_ON(mp)); | |
647 | ASSERT(mask & ATTR_GID); | |
648 | ASSERT(gdqp); | |
649 | olddquot2 = xfs_qm_vop_chown(tp, ip, | |
650 | &ip->i_gdquot, gdqp); | |
651 | } | |
652 | ip->i_d.di_gid = gid; | |
653 | inode->i_gid = gid; | |
654 | } | |
655 | } | |
656 | ||
657 | /* | |
658 | * Change file access modes. | |
659 | */ | |
660 | if (mask & ATTR_MODE) { | |
661 | umode_t mode = iattr->ia_mode; | |
662 | ||
663 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
664 | mode &= ~S_ISGID; | |
665 | ||
666 | ip->i_d.di_mode &= S_IFMT; | |
667 | ip->i_d.di_mode |= mode & ~S_IFMT; | |
668 | ||
669 | inode->i_mode &= S_IFMT; | |
670 | inode->i_mode |= mode & ~S_IFMT; | |
671 | } | |
672 | ||
673 | /* | |
674 | * Change file access or modified times. | |
675 | */ | |
676 | if (mask & ATTR_ATIME) { | |
677 | inode->i_atime = iattr->ia_atime; | |
678 | ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec; | |
679 | ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec; | |
680 | ip->i_update_core = 1; | |
681 | } | |
682 | if (mask & ATTR_CTIME) { | |
683 | inode->i_ctime = iattr->ia_ctime; | |
684 | ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; | |
685 | ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec; | |
686 | ip->i_update_core = 1; | |
687 | } | |
688 | if (mask & ATTR_MTIME) { | |
689 | inode->i_mtime = iattr->ia_mtime; | |
690 | ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec; | |
691 | ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec; | |
692 | ip->i_update_core = 1; | |
693 | } | |
694 | ||
695 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
696 | ||
697 | XFS_STATS_INC(xs_ig_attrchg); | |
698 | ||
699 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
700 | xfs_trans_set_sync(tp); | |
701 | error = xfs_trans_commit(tp, 0); | |
702 | ||
703 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
704 | ||
705 | /* | |
706 | * Release any dquot(s) the inode had kept before chown. | |
707 | */ | |
708 | xfs_qm_dqrele(olddquot1); | |
709 | xfs_qm_dqrele(olddquot2); | |
710 | xfs_qm_dqrele(udqp); | |
711 | xfs_qm_dqrele(gdqp); | |
712 | ||
713 | if (error) | |
714 | return XFS_ERROR(error); | |
715 | ||
716 | /* | |
717 | * XXX(hch): Updating the ACL entries is not atomic vs the i_mode | |
718 | * update. We could avoid this with linked transactions | |
719 | * and passing down the transaction pointer all the way | |
720 | * to attr_set. No previous user of the generic | |
721 | * Posix ACL code seems to care about this issue either. | |
722 | */ | |
723 | if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) { | |
724 | error = -xfs_acl_chmod(inode); | |
725 | if (error) | |
726 | return XFS_ERROR(error); | |
727 | } | |
728 | ||
729 | return 0; | |
730 | ||
731 | out_trans_cancel: | |
732 | xfs_trans_cancel(tp, 0); | |
733 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
734 | out_dqrele: | |
735 | xfs_qm_dqrele(udqp); | |
736 | xfs_qm_dqrele(gdqp); | |
737 | return error; | |
738 | } | |
739 | ||
740 | /* | |
741 | * Truncate file. Must have write permission and not be a directory. | |
742 | */ | |
743 | int | |
744 | xfs_setattr_size( | |
745 | struct xfs_inode *ip, | |
746 | struct iattr *iattr, | |
747 | int flags) | |
748 | { | |
749 | struct xfs_mount *mp = ip->i_mount; | |
750 | struct inode *inode = VFS_I(ip); | |
751 | int mask = iattr->ia_valid; | |
752 | struct xfs_trans *tp; | |
753 | int error; | |
754 | uint lock_flags; | |
755 | uint commit_flags = 0; | |
756 | ||
757 | trace_xfs_setattr(ip); | |
758 | ||
759 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
760 | return XFS_ERROR(EROFS); | |
761 | ||
762 | if (XFS_FORCED_SHUTDOWN(mp)) | |
763 | return XFS_ERROR(EIO); | |
764 | ||
765 | error = -inode_change_ok(inode, iattr); | |
766 | if (error) | |
767 | return XFS_ERROR(error); | |
768 | ||
769 | ASSERT(S_ISREG(ip->i_d.di_mode)); | |
770 | ASSERT((mask & (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET| | |
771 | ATTR_MTIME_SET|ATTR_KILL_SUID|ATTR_KILL_SGID| | |
772 | ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0); | |
773 | ||
774 | lock_flags = XFS_ILOCK_EXCL; | |
775 | if (!(flags & XFS_ATTR_NOLOCK)) | |
776 | lock_flags |= XFS_IOLOCK_EXCL; | |
777 | xfs_ilock(ip, lock_flags); | |
778 | ||
779 | /* | |
780 | * Short circuit the truncate case for zero length files. | |
781 | */ | |
782 | if (iattr->ia_size == 0 && | |
783 | ip->i_size == 0 && ip->i_d.di_nextents == 0) { | |
681b1200 CH |
784 | if (!(mask & (ATTR_CTIME|ATTR_MTIME))) |
785 | goto out_unlock; | |
786 | ||
787 | /* | |
788 | * Use the regular setattr path to update the timestamps. | |
789 | */ | |
790 | xfs_iunlock(ip, lock_flags); | |
791 | iattr->ia_valid &= ~ATTR_SIZE; | |
792 | return xfs_setattr_nonsize(ip, iattr, 0); | |
c4ed4243 CH |
793 | } |
794 | ||
795 | /* | |
796 | * Make sure that the dquots are attached to the inode. | |
797 | */ | |
798 | error = xfs_qm_dqattach_locked(ip, 0); | |
799 | if (error) | |
800 | goto out_unlock; | |
801 | ||
802 | /* | |
803 | * Now we can make the changes. Before we join the inode to the | |
804 | * transaction, take care of the part of the truncation that must be | |
805 | * done without the inode lock. This needs to be done before joining | |
806 | * the inode to the transaction, because the inode cannot be unlocked | |
807 | * once it is a part of the transaction. | |
808 | */ | |
809 | if (iattr->ia_size > ip->i_size) { | |
810 | /* | |
811 | * Do the first part of growing a file: zero any data in the | |
812 | * last block that is beyond the old EOF. We need to do this | |
813 | * before the inode is joined to the transaction to modify | |
814 | * i_size. | |
815 | */ | |
816 | error = xfs_zero_eof(ip, iattr->ia_size, ip->i_size); | |
817 | if (error) | |
818 | goto out_unlock; | |
819 | } | |
820 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
821 | lock_flags &= ~XFS_ILOCK_EXCL; | |
822 | ||
823 | /* | |
824 | * We are going to log the inode size change in this transaction so | |
825 | * any previous writes that are beyond the on disk EOF and the new | |
826 | * EOF that have not been written out need to be written here. If we | |
827 | * do not write the data out, we expose ourselves to the null files | |
828 | * problem. | |
829 | * | |
830 | * Only flush from the on disk size to the smaller of the in memory | |
831 | * file size or the new size as that's the range we really care about | |
832 | * here and prevents waiting for other data not within the range we | |
833 | * care about here. | |
834 | */ | |
835 | if (ip->i_size != ip->i_d.di_size && iattr->ia_size > ip->i_d.di_size) { | |
2b3ffd7e CH |
836 | error = xfs_flush_pages(ip, ip->i_d.di_size, iattr->ia_size, 0, |
837 | FI_NONE); | |
c4ed4243 CH |
838 | if (error) |
839 | goto out_unlock; | |
840 | } | |
841 | ||
842 | /* | |
4a06fd26 | 843 | * Wait for all direct I/O to complete. |
c4ed4243 | 844 | */ |
4a06fd26 | 845 | inode_dio_wait(inode); |
c4ed4243 CH |
846 | |
847 | error = -block_truncate_page(inode->i_mapping, iattr->ia_size, | |
848 | xfs_get_blocks); | |
849 | if (error) | |
850 | goto out_unlock; | |
851 | ||
852 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_SIZE); | |
853 | error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0, | |
854 | XFS_TRANS_PERM_LOG_RES, | |
855 | XFS_ITRUNCATE_LOG_COUNT); | |
856 | if (error) | |
857 | goto out_trans_cancel; | |
858 | ||
859 | truncate_setsize(inode, iattr->ia_size); | |
860 | ||
861 | commit_flags = XFS_TRANS_RELEASE_LOG_RES; | |
862 | lock_flags |= XFS_ILOCK_EXCL; | |
863 | ||
864 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
865 | ||
866 | xfs_trans_ijoin(tp, ip); | |
867 | ||
868 | /* | |
869 | * Only change the c/mtime if we are changing the size or we are | |
870 | * explicitly asked to change it. This handles the semantic difference | |
871 | * between truncate() and ftruncate() as implemented in the VFS. | |
872 | * | |
873 | * The regular truncate() case without ATTR_CTIME and ATTR_MTIME is a | |
874 | * special case where we need to update the times despite not having | |
875 | * these flags set. For all other operations the VFS set these flags | |
876 | * explicitly if it wants a timestamp update. | |
877 | */ | |
878 | if (iattr->ia_size != ip->i_size && | |
879 | (!(mask & (ATTR_CTIME | ATTR_MTIME)))) { | |
880 | iattr->ia_ctime = iattr->ia_mtime = | |
881 | current_fs_time(inode->i_sb); | |
882 | mask |= ATTR_CTIME | ATTR_MTIME; | |
883 | } | |
884 | ||
885 | if (iattr->ia_size > ip->i_size) { | |
886 | ip->i_d.di_size = iattr->ia_size; | |
887 | ip->i_size = iattr->ia_size; | |
888 | } else if (iattr->ia_size <= ip->i_size || | |
889 | (iattr->ia_size == 0 && ip->i_d.di_nextents)) { | |
8f04c47a | 890 | error = xfs_itruncate_data(&tp, ip, iattr->ia_size); |
c4ed4243 CH |
891 | if (error) |
892 | goto out_trans_abort; | |
893 | ||
894 | /* | |
895 | * Truncated "down", so we're removing references to old data | |
896 | * here - if we delay flushing for a long time, we expose | |
897 | * ourselves unduly to the notorious NULL files problem. So, | |
898 | * we mark this inode and flush it when the file is closed, | |
899 | * and do not wait the usual (long) time for writeout. | |
900 | */ | |
901 | xfs_iflags_set(ip, XFS_ITRUNCATED); | |
902 | } | |
903 | ||
904 | if (mask & ATTR_CTIME) { | |
905 | inode->i_ctime = iattr->ia_ctime; | |
906 | ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; | |
907 | ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec; | |
908 | ip->i_update_core = 1; | |
909 | } | |
910 | if (mask & ATTR_MTIME) { | |
911 | inode->i_mtime = iattr->ia_mtime; | |
912 | ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec; | |
913 | ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec; | |
914 | ip->i_update_core = 1; | |
915 | } | |
916 | ||
917 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
918 | ||
919 | XFS_STATS_INC(xs_ig_attrchg); | |
920 | ||
921 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
922 | xfs_trans_set_sync(tp); | |
923 | ||
924 | error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); | |
925 | out_unlock: | |
926 | if (lock_flags) | |
927 | xfs_iunlock(ip, lock_flags); | |
928 | return error; | |
929 | ||
930 | out_trans_abort: | |
931 | commit_flags |= XFS_TRANS_ABORT; | |
932 | out_trans_cancel: | |
933 | xfs_trans_cancel(tp, commit_flags); | |
934 | goto out_unlock; | |
935 | } | |
936 | ||
1da177e4 | 937 | STATIC int |
416c6d5b | 938 | xfs_vn_setattr( |
1da177e4 | 939 | struct dentry *dentry, |
0f285c8a | 940 | struct iattr *iattr) |
1da177e4 | 941 | { |
c4ed4243 CH |
942 | if (iattr->ia_valid & ATTR_SIZE) |
943 | return -xfs_setattr_size(XFS_I(dentry->d_inode), iattr, 0); | |
944 | return -xfs_setattr_nonsize(XFS_I(dentry->d_inode), iattr, 0); | |
1da177e4 LT |
945 | } |
946 | ||
f35642e2 ES |
947 | #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) |
948 | ||
949 | /* | |
950 | * Call fiemap helper to fill in user data. | |
951 | * Returns positive errors to xfs_getbmap. | |
952 | */ | |
953 | STATIC int | |
954 | xfs_fiemap_format( | |
955 | void **arg, | |
956 | struct getbmapx *bmv, | |
957 | int *full) | |
958 | { | |
959 | int error; | |
960 | struct fiemap_extent_info *fieinfo = *arg; | |
961 | u32 fiemap_flags = 0; | |
962 | u64 logical, physical, length; | |
963 | ||
964 | /* Do nothing for a hole */ | |
965 | if (bmv->bmv_block == -1LL) | |
966 | return 0; | |
967 | ||
968 | logical = BBTOB(bmv->bmv_offset); | |
969 | physical = BBTOB(bmv->bmv_block); | |
970 | length = BBTOB(bmv->bmv_length); | |
971 | ||
972 | if (bmv->bmv_oflags & BMV_OF_PREALLOC) | |
973 | fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN; | |
974 | else if (bmv->bmv_oflags & BMV_OF_DELALLOC) { | |
975 | fiemap_flags |= FIEMAP_EXTENT_DELALLOC; | |
976 | physical = 0; /* no block yet */ | |
977 | } | |
978 | if (bmv->bmv_oflags & BMV_OF_LAST) | |
979 | fiemap_flags |= FIEMAP_EXTENT_LAST; | |
980 | ||
981 | error = fiemap_fill_next_extent(fieinfo, logical, physical, | |
982 | length, fiemap_flags); | |
983 | if (error > 0) { | |
984 | error = 0; | |
985 | *full = 1; /* user array now full */ | |
986 | } | |
987 | ||
988 | return -error; | |
989 | } | |
990 | ||
991 | STATIC int | |
992 | xfs_vn_fiemap( | |
993 | struct inode *inode, | |
994 | struct fiemap_extent_info *fieinfo, | |
995 | u64 start, | |
996 | u64 length) | |
997 | { | |
998 | xfs_inode_t *ip = XFS_I(inode); | |
999 | struct getbmapx bm; | |
1000 | int error; | |
1001 | ||
1002 | error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS); | |
1003 | if (error) | |
1004 | return error; | |
1005 | ||
1006 | /* Set up bmap header for xfs internal routine */ | |
1007 | bm.bmv_offset = BTOBB(start); | |
1008 | /* Special case for whole file */ | |
1009 | if (length == FIEMAP_MAX_OFFSET) | |
1010 | bm.bmv_length = -1LL; | |
1011 | else | |
1012 | bm.bmv_length = BTOBB(length); | |
1013 | ||
97db39a1 | 1014 | /* We add one because in getbmap world count includes the header */ |
2d1ff3c7 TM |
1015 | bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM : |
1016 | fieinfo->fi_extents_max + 1; | |
1017 | bm.bmv_count = min_t(__s32, bm.bmv_count, | |
1018 | (PAGE_SIZE * 16 / sizeof(struct getbmapx))); | |
9af25465 | 1019 | bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES; |
f35642e2 ES |
1020 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) |
1021 | bm.bmv_iflags |= BMV_IF_ATTRFORK; | |
1022 | if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) | |
1023 | bm.bmv_iflags |= BMV_IF_DELALLOC; | |
1024 | ||
1025 | error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo); | |
1026 | if (error) | |
1027 | return -error; | |
1028 | ||
1029 | return 0; | |
1030 | } | |
1031 | ||
41be8bed | 1032 | static const struct inode_operations xfs_inode_operations = { |
4e34e719 | 1033 | .get_acl = xfs_get_acl, |
416c6d5b NS |
1034 | .getattr = xfs_vn_getattr, |
1035 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1036 | .setxattr = generic_setxattr, |
1037 | .getxattr = generic_getxattr, | |
1038 | .removexattr = generic_removexattr, | |
416c6d5b | 1039 | .listxattr = xfs_vn_listxattr, |
f35642e2 | 1040 | .fiemap = xfs_vn_fiemap, |
1da177e4 LT |
1041 | }; |
1042 | ||
41be8bed | 1043 | static const struct inode_operations xfs_dir_inode_operations = { |
416c6d5b NS |
1044 | .create = xfs_vn_create, |
1045 | .lookup = xfs_vn_lookup, | |
1046 | .link = xfs_vn_link, | |
1047 | .unlink = xfs_vn_unlink, | |
1048 | .symlink = xfs_vn_symlink, | |
1049 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
1050 | /* |
1051 | * Yes, XFS uses the same method for rmdir and unlink. | |
1052 | * | |
1053 | * There are some subtile differences deeper in the code, | |
1054 | * but we use S_ISDIR to check for those. | |
1055 | */ | |
1056 | .rmdir = xfs_vn_unlink, | |
416c6d5b NS |
1057 | .mknod = xfs_vn_mknod, |
1058 | .rename = xfs_vn_rename, | |
4e34e719 | 1059 | .get_acl = xfs_get_acl, |
416c6d5b NS |
1060 | .getattr = xfs_vn_getattr, |
1061 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1062 | .setxattr = generic_setxattr, |
1063 | .getxattr = generic_getxattr, | |
1064 | .removexattr = generic_removexattr, | |
416c6d5b | 1065 | .listxattr = xfs_vn_listxattr, |
1da177e4 LT |
1066 | }; |
1067 | ||
41be8bed | 1068 | static const struct inode_operations xfs_dir_ci_inode_operations = { |
384f3ced BN |
1069 | .create = xfs_vn_create, |
1070 | .lookup = xfs_vn_ci_lookup, | |
1071 | .link = xfs_vn_link, | |
1072 | .unlink = xfs_vn_unlink, | |
1073 | .symlink = xfs_vn_symlink, | |
1074 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
1075 | /* |
1076 | * Yes, XFS uses the same method for rmdir and unlink. | |
1077 | * | |
1078 | * There are some subtile differences deeper in the code, | |
1079 | * but we use S_ISDIR to check for those. | |
1080 | */ | |
1081 | .rmdir = xfs_vn_unlink, | |
384f3ced BN |
1082 | .mknod = xfs_vn_mknod, |
1083 | .rename = xfs_vn_rename, | |
4e34e719 | 1084 | .get_acl = xfs_get_acl, |
384f3ced BN |
1085 | .getattr = xfs_vn_getattr, |
1086 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1087 | .setxattr = generic_setxattr, |
1088 | .getxattr = generic_getxattr, | |
1089 | .removexattr = generic_removexattr, | |
384f3ced | 1090 | .listxattr = xfs_vn_listxattr, |
384f3ced BN |
1091 | }; |
1092 | ||
41be8bed | 1093 | static const struct inode_operations xfs_symlink_inode_operations = { |
1da177e4 | 1094 | .readlink = generic_readlink, |
416c6d5b NS |
1095 | .follow_link = xfs_vn_follow_link, |
1096 | .put_link = xfs_vn_put_link, | |
4e34e719 | 1097 | .get_acl = xfs_get_acl, |
416c6d5b NS |
1098 | .getattr = xfs_vn_getattr, |
1099 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1100 | .setxattr = generic_setxattr, |
1101 | .getxattr = generic_getxattr, | |
1102 | .removexattr = generic_removexattr, | |
416c6d5b | 1103 | .listxattr = xfs_vn_listxattr, |
1da177e4 | 1104 | }; |
41be8bed CH |
1105 | |
1106 | STATIC void | |
1107 | xfs_diflags_to_iflags( | |
1108 | struct inode *inode, | |
1109 | struct xfs_inode *ip) | |
1110 | { | |
1111 | if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) | |
1112 | inode->i_flags |= S_IMMUTABLE; | |
1113 | else | |
1114 | inode->i_flags &= ~S_IMMUTABLE; | |
1115 | if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) | |
1116 | inode->i_flags |= S_APPEND; | |
1117 | else | |
1118 | inode->i_flags &= ~S_APPEND; | |
1119 | if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) | |
1120 | inode->i_flags |= S_SYNC; | |
1121 | else | |
1122 | inode->i_flags &= ~S_SYNC; | |
1123 | if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) | |
1124 | inode->i_flags |= S_NOATIME; | |
1125 | else | |
1126 | inode->i_flags &= ~S_NOATIME; | |
1127 | } | |
1128 | ||
1129 | /* | |
1130 | * Initialize the Linux inode, set up the operation vectors and | |
1131 | * unlock the inode. | |
1132 | * | |
1133 | * When reading existing inodes from disk this is called directly | |
1134 | * from xfs_iget, when creating a new inode it is called from | |
1135 | * xfs_ialloc after setting up the inode. | |
bf904248 DC |
1136 | * |
1137 | * We are always called with an uninitialised linux inode here. | |
1138 | * We need to initialise the necessary fields and take a reference | |
1139 | * on it. | |
41be8bed CH |
1140 | */ |
1141 | void | |
1142 | xfs_setup_inode( | |
1143 | struct xfs_inode *ip) | |
1144 | { | |
bf904248 DC |
1145 | struct inode *inode = &ip->i_vnode; |
1146 | ||
1147 | inode->i_ino = ip->i_ino; | |
eaff8079 | 1148 | inode->i_state = I_NEW; |
646ec461 CH |
1149 | |
1150 | inode_sb_list_add(inode); | |
c6f6cd06 CH |
1151 | /* make the inode look hashed for the writeback code */ |
1152 | hlist_add_fake(&inode->i_hash); | |
41be8bed CH |
1153 | |
1154 | inode->i_mode = ip->i_d.di_mode; | |
1155 | inode->i_nlink = ip->i_d.di_nlink; | |
1156 | inode->i_uid = ip->i_d.di_uid; | |
1157 | inode->i_gid = ip->i_d.di_gid; | |
1158 | ||
1159 | switch (inode->i_mode & S_IFMT) { | |
1160 | case S_IFBLK: | |
1161 | case S_IFCHR: | |
1162 | inode->i_rdev = | |
1163 | MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
1164 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
1165 | break; | |
1166 | default: | |
1167 | inode->i_rdev = 0; | |
1168 | break; | |
1169 | } | |
1170 | ||
1171 | inode->i_generation = ip->i_d.di_gen; | |
1172 | i_size_write(inode, ip->i_d.di_size); | |
1173 | inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; | |
1174 | inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; | |
1175 | inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; | |
1176 | inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; | |
1177 | inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; | |
1178 | inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; | |
1179 | xfs_diflags_to_iflags(inode, ip); | |
41be8bed CH |
1180 | |
1181 | switch (inode->i_mode & S_IFMT) { | |
1182 | case S_IFREG: | |
1183 | inode->i_op = &xfs_inode_operations; | |
1184 | inode->i_fop = &xfs_file_operations; | |
1185 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
1186 | break; | |
1187 | case S_IFDIR: | |
1188 | if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb)) | |
1189 | inode->i_op = &xfs_dir_ci_inode_operations; | |
1190 | else | |
1191 | inode->i_op = &xfs_dir_inode_operations; | |
1192 | inode->i_fop = &xfs_dir_file_operations; | |
1193 | break; | |
1194 | case S_IFLNK: | |
1195 | inode->i_op = &xfs_symlink_inode_operations; | |
1196 | if (!(ip->i_df.if_flags & XFS_IFINLINE)) | |
1197 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
1198 | break; | |
1199 | default: | |
1200 | inode->i_op = &xfs_inode_operations; | |
1201 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
1202 | break; | |
1203 | } | |
1204 | ||
510792ee CH |
1205 | /* |
1206 | * If there is no attribute fork no ACL can exist on this inode, | |
1207 | * and it can't have any file capabilities attached to it either. | |
1208 | */ | |
1209 | if (!XFS_IFORK_Q(ip)) { | |
1210 | inode_has_no_xattr(inode); | |
6311b108 | 1211 | cache_no_acl(inode); |
510792ee | 1212 | } |
6311b108 | 1213 | |
41be8bed CH |
1214 | xfs_iflags_clear(ip, XFS_INEW); |
1215 | barrier(); | |
1216 | ||
1217 | unlock_new_inode(inode); | |
1218 | } |