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Commit | Line | Data |
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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 | /* |
bf904248 | 73 | * If the linux inode is valid, mark it dirty. |
25985edc | 74 | * Used when committing a dirty inode into a transaction so that |
5d51eff4 DC |
75 | * the inode will get written back by the linux code |
76 | */ | |
77 | void | |
78 | xfs_mark_inode_dirty_sync( | |
79 | xfs_inode_t *ip) | |
80 | { | |
01651646 | 81 | struct inode *inode = VFS_I(ip); |
5d51eff4 | 82 | |
a4ffdde6 | 83 | if (!(inode->i_state & (I_WILL_FREE|I_FREEING))) |
af048193 | 84 | mark_inode_dirty_sync(inode); |
5d51eff4 DC |
85 | } |
86 | ||
66d834ea CH |
87 | void |
88 | xfs_mark_inode_dirty( | |
89 | xfs_inode_t *ip) | |
90 | { | |
91 | struct inode *inode = VFS_I(ip); | |
92 | ||
a4ffdde6 | 93 | if (!(inode->i_state & (I_WILL_FREE|I_FREEING))) |
66d834ea CH |
94 | mark_inode_dirty(inode); |
95 | } | |
96 | ||
446ada4a NS |
97 | /* |
98 | * Hook in SELinux. This is not quite correct yet, what we really need | |
99 | * here (as we do for default ACLs) is a mechanism by which creation of | |
100 | * these attrs can be journalled at inode creation time (along with the | |
101 | * inode, of course, such that log replay can't cause these to be lost). | |
102 | */ | |
103 | STATIC int | |
416c6d5b | 104 | xfs_init_security( |
af048193 | 105 | struct inode *inode, |
2a7dba39 EP |
106 | struct inode *dir, |
107 | const struct qstr *qstr) | |
446ada4a | 108 | { |
af048193 | 109 | struct xfs_inode *ip = XFS_I(inode); |
446ada4a NS |
110 | size_t length; |
111 | void *value; | |
a9273ca5 | 112 | unsigned char *name; |
446ada4a NS |
113 | int error; |
114 | ||
2a7dba39 | 115 | error = security_inode_init_security(inode, dir, qstr, (char **)&name, |
af048193 | 116 | &value, &length); |
446ada4a NS |
117 | if (error) { |
118 | if (error == -EOPNOTSUPP) | |
119 | return 0; | |
120 | return -error; | |
121 | } | |
122 | ||
af048193 | 123 | error = xfs_attr_set(ip, name, value, length, ATTR_SECURE); |
446ada4a NS |
124 | |
125 | kfree(name); | |
126 | kfree(value); | |
127 | return error; | |
128 | } | |
129 | ||
556b8b16 BN |
130 | static void |
131 | xfs_dentry_to_name( | |
132 | struct xfs_name *namep, | |
133 | struct dentry *dentry) | |
134 | { | |
135 | namep->name = dentry->d_name.name; | |
136 | namep->len = dentry->d_name.len; | |
137 | } | |
138 | ||
7989cb8e | 139 | STATIC void |
416c6d5b | 140 | xfs_cleanup_inode( |
739bfb2a | 141 | struct inode *dir, |
af048193 | 142 | struct inode *inode, |
8f112e3b | 143 | struct dentry *dentry) |
3a69c7dc | 144 | { |
556b8b16 | 145 | struct xfs_name teardown; |
3a69c7dc YL |
146 | |
147 | /* Oh, the horror. | |
220b5284 | 148 | * If we can't add the ACL or we fail in |
416c6d5b | 149 | * xfs_init_security we must back out. |
3a69c7dc YL |
150 | * ENOSPC can hit here, among other things. |
151 | */ | |
556b8b16 | 152 | xfs_dentry_to_name(&teardown, dentry); |
3a69c7dc | 153 | |
8f112e3b | 154 | xfs_remove(XFS_I(dir), &teardown, XFS_I(inode)); |
af048193 | 155 | iput(inode); |
3a69c7dc YL |
156 | } |
157 | ||
1da177e4 | 158 | STATIC int |
416c6d5b | 159 | xfs_vn_mknod( |
1da177e4 LT |
160 | struct inode *dir, |
161 | struct dentry *dentry, | |
162 | int mode, | |
163 | dev_t rdev) | |
164 | { | |
db0bb7ba | 165 | struct inode *inode; |
979ebab1 | 166 | struct xfs_inode *ip = NULL; |
ef14f0c1 | 167 | struct posix_acl *default_acl = NULL; |
556b8b16 | 168 | struct xfs_name name; |
1da177e4 LT |
169 | int error; |
170 | ||
171 | /* | |
172 | * Irix uses Missed'em'V split, but doesn't want to see | |
173 | * the upper 5 bits of (14bit) major. | |
174 | */ | |
517b5e8c CH |
175 | if (S_ISCHR(mode) || S_ISBLK(mode)) { |
176 | if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) | |
177 | return -EINVAL; | |
178 | rdev = sysv_encode_dev(rdev); | |
179 | } else { | |
180 | rdev = 0; | |
181 | } | |
1da177e4 | 182 | |
ef14f0c1 CH |
183 | if (IS_POSIXACL(dir)) { |
184 | default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT); | |
185 | if (IS_ERR(default_acl)) | |
c46a131c | 186 | return PTR_ERR(default_acl); |
1da177e4 | 187 | |
e83f1eb6 CH |
188 | if (!default_acl) |
189 | mode &= ~current_umask(); | |
ef14f0c1 | 190 | } |
1da177e4 | 191 | |
517b5e8c | 192 | xfs_dentry_to_name(&name, dentry); |
6c77b0ea | 193 | error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip); |
db0bb7ba CH |
194 | if (unlikely(error)) |
195 | goto out_free_acl; | |
446ada4a | 196 | |
01651646 | 197 | inode = VFS_I(ip); |
979ebab1 | 198 | |
2a7dba39 | 199 | error = xfs_init_security(inode, dir, &dentry->d_name); |
db0bb7ba CH |
200 | if (unlikely(error)) |
201 | goto out_cleanup_inode; | |
202 | ||
203 | if (default_acl) { | |
ef14f0c1 | 204 | error = -xfs_inherit_acl(inode, default_acl); |
db0bb7ba CH |
205 | if (unlikely(error)) |
206 | goto out_cleanup_inode; | |
ef14f0c1 | 207 | posix_acl_release(default_acl); |
1da177e4 LT |
208 | } |
209 | ||
1da177e4 | 210 | |
db0bb7ba | 211 | d_instantiate(dentry, inode); |
db0bb7ba CH |
212 | return -error; |
213 | ||
214 | out_cleanup_inode: | |
8f112e3b | 215 | xfs_cleanup_inode(dir, inode, dentry); |
db0bb7ba | 216 | out_free_acl: |
ef14f0c1 | 217 | posix_acl_release(default_acl); |
1da177e4 LT |
218 | return -error; |
219 | } | |
220 | ||
221 | STATIC int | |
416c6d5b | 222 | xfs_vn_create( |
1da177e4 LT |
223 | struct inode *dir, |
224 | struct dentry *dentry, | |
225 | int mode, | |
226 | struct nameidata *nd) | |
227 | { | |
416c6d5b | 228 | return xfs_vn_mknod(dir, dentry, mode, 0); |
1da177e4 LT |
229 | } |
230 | ||
231 | STATIC int | |
416c6d5b | 232 | xfs_vn_mkdir( |
1da177e4 LT |
233 | struct inode *dir, |
234 | struct dentry *dentry, | |
235 | int mode) | |
236 | { | |
416c6d5b | 237 | return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0); |
1da177e4 LT |
238 | } |
239 | ||
240 | STATIC struct dentry * | |
416c6d5b | 241 | xfs_vn_lookup( |
1da177e4 LT |
242 | struct inode *dir, |
243 | struct dentry *dentry, | |
244 | struct nameidata *nd) | |
245 | { | |
ef1f5e7a | 246 | struct xfs_inode *cip; |
556b8b16 | 247 | struct xfs_name name; |
1da177e4 LT |
248 | int error; |
249 | ||
250 | if (dentry->d_name.len >= MAXNAMELEN) | |
251 | return ERR_PTR(-ENAMETOOLONG); | |
252 | ||
556b8b16 | 253 | xfs_dentry_to_name(&name, dentry); |
384f3ced | 254 | error = xfs_lookup(XFS_I(dir), &name, &cip, NULL); |
67fcaa73 | 255 | if (unlikely(error)) { |
1da177e4 LT |
256 | if (unlikely(error != ENOENT)) |
257 | return ERR_PTR(-error); | |
258 | d_add(dentry, NULL); | |
259 | return NULL; | |
260 | } | |
261 | ||
01651646 | 262 | return d_splice_alias(VFS_I(cip), dentry); |
1da177e4 LT |
263 | } |
264 | ||
384f3ced BN |
265 | STATIC struct dentry * |
266 | xfs_vn_ci_lookup( | |
267 | struct inode *dir, | |
268 | struct dentry *dentry, | |
269 | struct nameidata *nd) | |
270 | { | |
271 | struct xfs_inode *ip; | |
272 | struct xfs_name xname; | |
273 | struct xfs_name ci_name; | |
274 | struct qstr dname; | |
275 | int error; | |
276 | ||
277 | if (dentry->d_name.len >= MAXNAMELEN) | |
278 | return ERR_PTR(-ENAMETOOLONG); | |
279 | ||
280 | xfs_dentry_to_name(&xname, dentry); | |
281 | error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name); | |
282 | if (unlikely(error)) { | |
283 | if (unlikely(error != ENOENT)) | |
284 | return ERR_PTR(-error); | |
866d5dc9 BN |
285 | /* |
286 | * call d_add(dentry, NULL) here when d_drop_negative_children | |
287 | * is called in xfs_vn_mknod (ie. allow negative dentries | |
288 | * with CI filesystems). | |
289 | */ | |
384f3ced BN |
290 | return NULL; |
291 | } | |
292 | ||
293 | /* if exact match, just splice and exit */ | |
294 | if (!ci_name.name) | |
01651646 | 295 | return d_splice_alias(VFS_I(ip), dentry); |
384f3ced BN |
296 | |
297 | /* else case-insensitive match... */ | |
298 | dname.name = ci_name.name; | |
299 | dname.len = ci_name.len; | |
e45b590b | 300 | dentry = d_add_ci(dentry, VFS_I(ip), &dname); |
384f3ced BN |
301 | kmem_free(ci_name.name); |
302 | return dentry; | |
303 | } | |
304 | ||
1da177e4 | 305 | STATIC int |
416c6d5b | 306 | xfs_vn_link( |
1da177e4 LT |
307 | struct dentry *old_dentry, |
308 | struct inode *dir, | |
309 | struct dentry *dentry) | |
310 | { | |
d9424b3c | 311 | struct inode *inode = old_dentry->d_inode; |
556b8b16 | 312 | struct xfs_name name; |
1da177e4 LT |
313 | int error; |
314 | ||
556b8b16 | 315 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 316 | |
556b8b16 | 317 | error = xfs_link(XFS_I(dir), XFS_I(inode), &name); |
d9424b3c | 318 | if (unlikely(error)) |
a3da7896 | 319 | return -error; |
a3da7896 | 320 | |
7de9c6ee | 321 | ihold(inode); |
a3da7896 CH |
322 | d_instantiate(dentry, inode); |
323 | return 0; | |
1da177e4 LT |
324 | } |
325 | ||
326 | STATIC int | |
416c6d5b | 327 | xfs_vn_unlink( |
1da177e4 LT |
328 | struct inode *dir, |
329 | struct dentry *dentry) | |
330 | { | |
556b8b16 | 331 | struct xfs_name name; |
1da177e4 LT |
332 | int error; |
333 | ||
556b8b16 | 334 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 335 | |
e5700704 CH |
336 | error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode)); |
337 | if (error) | |
338 | return error; | |
339 | ||
340 | /* | |
341 | * With unlink, the VFS makes the dentry "negative": no inode, | |
342 | * but still hashed. This is incompatible with case-insensitive | |
343 | * mode, so invalidate (unhash) the dentry in CI-mode. | |
344 | */ | |
345 | if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb)) | |
346 | d_invalidate(dentry); | |
347 | return 0; | |
1da177e4 LT |
348 | } |
349 | ||
350 | STATIC int | |
416c6d5b | 351 | xfs_vn_symlink( |
1da177e4 LT |
352 | struct inode *dir, |
353 | struct dentry *dentry, | |
354 | const char *symname) | |
355 | { | |
3937be5b CH |
356 | struct inode *inode; |
357 | struct xfs_inode *cip = NULL; | |
556b8b16 | 358 | struct xfs_name name; |
1da177e4 | 359 | int error; |
3e5daf05 | 360 | mode_t mode; |
1da177e4 | 361 | |
3e5daf05 | 362 | mode = S_IFLNK | |
ce3b0f8d | 363 | (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO); |
556b8b16 | 364 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 365 | |
6c77b0ea | 366 | error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip); |
3937be5b CH |
367 | if (unlikely(error)) |
368 | goto out; | |
369 | ||
01651646 | 370 | inode = VFS_I(cip); |
3937be5b | 371 | |
2a7dba39 | 372 | error = xfs_init_security(inode, dir, &dentry->d_name); |
3937be5b CH |
373 | if (unlikely(error)) |
374 | goto out_cleanup_inode; | |
375 | ||
376 | d_instantiate(dentry, inode); | |
3937be5b CH |
377 | return 0; |
378 | ||
379 | out_cleanup_inode: | |
8f112e3b | 380 | xfs_cleanup_inode(dir, inode, dentry); |
3937be5b | 381 | out: |
1da177e4 LT |
382 | return -error; |
383 | } | |
384 | ||
1da177e4 | 385 | STATIC int |
416c6d5b | 386 | xfs_vn_rename( |
1da177e4 LT |
387 | struct inode *odir, |
388 | struct dentry *odentry, | |
389 | struct inode *ndir, | |
390 | struct dentry *ndentry) | |
391 | { | |
392 | struct inode *new_inode = ndentry->d_inode; | |
556b8b16 BN |
393 | struct xfs_name oname; |
394 | struct xfs_name nname; | |
1da177e4 | 395 | |
556b8b16 BN |
396 | xfs_dentry_to_name(&oname, odentry); |
397 | xfs_dentry_to_name(&nname, ndentry); | |
398 | ||
e5700704 | 399 | return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode), |
cfa853e4 CH |
400 | XFS_I(ndir), &nname, new_inode ? |
401 | XFS_I(new_inode) : NULL); | |
1da177e4 LT |
402 | } |
403 | ||
404 | /* | |
405 | * careful here - this function can get called recursively, so | |
406 | * we need to be very careful about how much stack we use. | |
407 | * uio is kmalloced for this reason... | |
408 | */ | |
008b150a | 409 | STATIC void * |
416c6d5b | 410 | xfs_vn_follow_link( |
1da177e4 LT |
411 | struct dentry *dentry, |
412 | struct nameidata *nd) | |
413 | { | |
1da177e4 | 414 | char *link; |
804c83c3 | 415 | int error = -ENOMEM; |
1da177e4 | 416 | |
f52720ca | 417 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
804c83c3 CH |
418 | if (!link) |
419 | goto out_err; | |
1da177e4 | 420 | |
739bfb2a | 421 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
804c83c3 CH |
422 | if (unlikely(error)) |
423 | goto out_kfree; | |
1da177e4 LT |
424 | |
425 | nd_set_link(nd, link); | |
008b150a | 426 | return NULL; |
804c83c3 CH |
427 | |
428 | out_kfree: | |
429 | kfree(link); | |
430 | out_err: | |
431 | nd_set_link(nd, ERR_PTR(error)); | |
432 | return NULL; | |
1da177e4 LT |
433 | } |
434 | ||
cde410a9 | 435 | STATIC void |
416c6d5b | 436 | xfs_vn_put_link( |
cde410a9 NS |
437 | struct dentry *dentry, |
438 | struct nameidata *nd, | |
439 | void *p) | |
1da177e4 | 440 | { |
cde410a9 NS |
441 | char *s = nd_get_link(nd); |
442 | ||
1da177e4 LT |
443 | if (!IS_ERR(s)) |
444 | kfree(s); | |
445 | } | |
446 | ||
1da177e4 | 447 | STATIC int |
416c6d5b | 448 | xfs_vn_getattr( |
c43f4087 CH |
449 | struct vfsmount *mnt, |
450 | struct dentry *dentry, | |
451 | struct kstat *stat) | |
1da177e4 | 452 | { |
c43f4087 CH |
453 | struct inode *inode = dentry->d_inode; |
454 | struct xfs_inode *ip = XFS_I(inode); | |
455 | struct xfs_mount *mp = ip->i_mount; | |
456 | ||
cca28fb8 | 457 | trace_xfs_getattr(ip); |
c43f4087 CH |
458 | |
459 | if (XFS_FORCED_SHUTDOWN(mp)) | |
460 | return XFS_ERROR(EIO); | |
461 | ||
462 | stat->size = XFS_ISIZE(ip); | |
463 | stat->dev = inode->i_sb->s_dev; | |
464 | stat->mode = ip->i_d.di_mode; | |
465 | stat->nlink = ip->i_d.di_nlink; | |
466 | stat->uid = ip->i_d.di_uid; | |
467 | stat->gid = ip->i_d.di_gid; | |
468 | stat->ino = ip->i_ino; | |
c43f4087 | 469 | stat->atime = inode->i_atime; |
f9581b14 CH |
470 | stat->mtime = inode->i_mtime; |
471 | stat->ctime = inode->i_ctime; | |
c43f4087 CH |
472 | stat->blocks = |
473 | XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks); | |
474 | ||
475 | ||
476 | switch (inode->i_mode & S_IFMT) { | |
477 | case S_IFBLK: | |
478 | case S_IFCHR: | |
479 | stat->blksize = BLKDEV_IOSIZE; | |
480 | stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
481 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
482 | break; | |
483 | default: | |
71ddabb9 | 484 | if (XFS_IS_REALTIME_INODE(ip)) { |
c43f4087 CH |
485 | /* |
486 | * If the file blocks are being allocated from a | |
487 | * realtime volume, then return the inode's realtime | |
488 | * extent size or the realtime volume's extent size. | |
489 | */ | |
490 | stat->blksize = | |
491 | xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog; | |
492 | } else | |
493 | stat->blksize = xfs_preferred_iosize(mp); | |
494 | stat->rdev = 0; | |
495 | break; | |
69e23b9a | 496 | } |
c43f4087 CH |
497 | |
498 | return 0; | |
1da177e4 LT |
499 | } |
500 | ||
c4ed4243 CH |
501 | int |
502 | xfs_setattr_nonsize( | |
503 | struct xfs_inode *ip, | |
504 | struct iattr *iattr, | |
505 | int flags) | |
506 | { | |
507 | xfs_mount_t *mp = ip->i_mount; | |
508 | struct inode *inode = VFS_I(ip); | |
509 | int mask = iattr->ia_valid; | |
510 | xfs_trans_t *tp; | |
511 | int error; | |
512 | uid_t uid = 0, iuid = 0; | |
513 | gid_t gid = 0, igid = 0; | |
514 | struct xfs_dquot *udqp = NULL, *gdqp = NULL; | |
515 | struct xfs_dquot *olddquot1 = NULL, *olddquot2 = NULL; | |
516 | ||
517 | trace_xfs_setattr(ip); | |
518 | ||
519 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
520 | return XFS_ERROR(EROFS); | |
521 | ||
522 | if (XFS_FORCED_SHUTDOWN(mp)) | |
523 | return XFS_ERROR(EIO); | |
524 | ||
525 | error = -inode_change_ok(inode, iattr); | |
526 | if (error) | |
527 | return XFS_ERROR(error); | |
528 | ||
529 | ASSERT((mask & ATTR_SIZE) == 0); | |
530 | ||
531 | /* | |
532 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
533 | * before we start any other transactions. Trying to do this later | |
534 | * is messy. We don't care to take a readlock to look at the ids | |
535 | * in inode here, because we can't hold it across the trans_reserve. | |
536 | * If the IDs do change before we take the ilock, we're covered | |
537 | * because the i_*dquot fields will get updated anyway. | |
538 | */ | |
539 | if (XFS_IS_QUOTA_ON(mp) && (mask & (ATTR_UID|ATTR_GID))) { | |
540 | uint qflags = 0; | |
541 | ||
542 | if ((mask & ATTR_UID) && XFS_IS_UQUOTA_ON(mp)) { | |
543 | uid = iattr->ia_uid; | |
544 | qflags |= XFS_QMOPT_UQUOTA; | |
545 | } else { | |
546 | uid = ip->i_d.di_uid; | |
547 | } | |
548 | if ((mask & ATTR_GID) && XFS_IS_GQUOTA_ON(mp)) { | |
549 | gid = iattr->ia_gid; | |
550 | qflags |= XFS_QMOPT_GQUOTA; | |
551 | } else { | |
552 | gid = ip->i_d.di_gid; | |
553 | } | |
554 | ||
555 | /* | |
556 | * We take a reference when we initialize udqp and gdqp, | |
557 | * so it is important that we never blindly double trip on | |
558 | * the same variable. See xfs_create() for an example. | |
559 | */ | |
560 | ASSERT(udqp == NULL); | |
561 | ASSERT(gdqp == NULL); | |
562 | error = xfs_qm_vop_dqalloc(ip, uid, gid, xfs_get_projid(ip), | |
563 | qflags, &udqp, &gdqp); | |
564 | if (error) | |
565 | return error; | |
566 | } | |
567 | ||
568 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
569 | error = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); | |
570 | if (error) | |
571 | goto out_dqrele; | |
572 | ||
573 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
574 | ||
575 | /* | |
576 | * Change file ownership. Must be the owner or privileged. | |
577 | */ | |
578 | if (mask & (ATTR_UID|ATTR_GID)) { | |
579 | /* | |
580 | * These IDs could have changed since we last looked at them. | |
581 | * But, we're assured that if the ownership did change | |
582 | * while we didn't have the inode locked, inode's dquot(s) | |
583 | * would have changed also. | |
584 | */ | |
585 | iuid = ip->i_d.di_uid; | |
586 | igid = ip->i_d.di_gid; | |
587 | gid = (mask & ATTR_GID) ? iattr->ia_gid : igid; | |
588 | uid = (mask & ATTR_UID) ? iattr->ia_uid : iuid; | |
589 | ||
590 | /* | |
591 | * Do a quota reservation only if uid/gid is actually | |
592 | * going to change. | |
593 | */ | |
594 | if (XFS_IS_QUOTA_RUNNING(mp) && | |
595 | ((XFS_IS_UQUOTA_ON(mp) && iuid != uid) || | |
596 | (XFS_IS_GQUOTA_ON(mp) && igid != gid))) { | |
597 | ASSERT(tp); | |
598 | error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, | |
599 | capable(CAP_FOWNER) ? | |
600 | XFS_QMOPT_FORCE_RES : 0); | |
601 | if (error) /* out of quota */ | |
602 | goto out_trans_cancel; | |
603 | } | |
604 | } | |
605 | ||
606 | xfs_trans_ijoin(tp, ip); | |
607 | ||
608 | /* | |
609 | * Change file ownership. Must be the owner or privileged. | |
610 | */ | |
611 | if (mask & (ATTR_UID|ATTR_GID)) { | |
612 | /* | |
613 | * CAP_FSETID overrides the following restrictions: | |
614 | * | |
615 | * The set-user-ID and set-group-ID bits of a file will be | |
616 | * cleared upon successful return from chown() | |
617 | */ | |
618 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
619 | !capable(CAP_FSETID)) | |
620 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
621 | ||
622 | /* | |
623 | * Change the ownerships and register quota modifications | |
624 | * in the transaction. | |
625 | */ | |
626 | if (iuid != uid) { | |
627 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_UQUOTA_ON(mp)) { | |
628 | ASSERT(mask & ATTR_UID); | |
629 | ASSERT(udqp); | |
630 | olddquot1 = xfs_qm_vop_chown(tp, ip, | |
631 | &ip->i_udquot, udqp); | |
632 | } | |
633 | ip->i_d.di_uid = uid; | |
634 | inode->i_uid = uid; | |
635 | } | |
636 | if (igid != gid) { | |
637 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_GQUOTA_ON(mp)) { | |
638 | ASSERT(!XFS_IS_PQUOTA_ON(mp)); | |
639 | ASSERT(mask & ATTR_GID); | |
640 | ASSERT(gdqp); | |
641 | olddquot2 = xfs_qm_vop_chown(tp, ip, | |
642 | &ip->i_gdquot, gdqp); | |
643 | } | |
644 | ip->i_d.di_gid = gid; | |
645 | inode->i_gid = gid; | |
646 | } | |
647 | } | |
648 | ||
649 | /* | |
650 | * Change file access modes. | |
651 | */ | |
652 | if (mask & ATTR_MODE) { | |
653 | umode_t mode = iattr->ia_mode; | |
654 | ||
655 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
656 | mode &= ~S_ISGID; | |
657 | ||
658 | ip->i_d.di_mode &= S_IFMT; | |
659 | ip->i_d.di_mode |= mode & ~S_IFMT; | |
660 | ||
661 | inode->i_mode &= S_IFMT; | |
662 | inode->i_mode |= mode & ~S_IFMT; | |
663 | } | |
664 | ||
665 | /* | |
666 | * Change file access or modified times. | |
667 | */ | |
668 | if (mask & ATTR_ATIME) { | |
669 | inode->i_atime = iattr->ia_atime; | |
670 | ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec; | |
671 | ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec; | |
672 | ip->i_update_core = 1; | |
673 | } | |
674 | if (mask & ATTR_CTIME) { | |
675 | inode->i_ctime = iattr->ia_ctime; | |
676 | ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; | |
677 | ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec; | |
678 | ip->i_update_core = 1; | |
679 | } | |
680 | if (mask & ATTR_MTIME) { | |
681 | inode->i_mtime = iattr->ia_mtime; | |
682 | ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec; | |
683 | ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec; | |
684 | ip->i_update_core = 1; | |
685 | } | |
686 | ||
687 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
688 | ||
689 | XFS_STATS_INC(xs_ig_attrchg); | |
690 | ||
691 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
692 | xfs_trans_set_sync(tp); | |
693 | error = xfs_trans_commit(tp, 0); | |
694 | ||
695 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
696 | ||
697 | /* | |
698 | * Release any dquot(s) the inode had kept before chown. | |
699 | */ | |
700 | xfs_qm_dqrele(olddquot1); | |
701 | xfs_qm_dqrele(olddquot2); | |
702 | xfs_qm_dqrele(udqp); | |
703 | xfs_qm_dqrele(gdqp); | |
704 | ||
705 | if (error) | |
706 | return XFS_ERROR(error); | |
707 | ||
708 | /* | |
709 | * XXX(hch): Updating the ACL entries is not atomic vs the i_mode | |
710 | * update. We could avoid this with linked transactions | |
711 | * and passing down the transaction pointer all the way | |
712 | * to attr_set. No previous user of the generic | |
713 | * Posix ACL code seems to care about this issue either. | |
714 | */ | |
715 | if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) { | |
716 | error = -xfs_acl_chmod(inode); | |
717 | if (error) | |
718 | return XFS_ERROR(error); | |
719 | } | |
720 | ||
721 | return 0; | |
722 | ||
723 | out_trans_cancel: | |
724 | xfs_trans_cancel(tp, 0); | |
725 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
726 | out_dqrele: | |
727 | xfs_qm_dqrele(udqp); | |
728 | xfs_qm_dqrele(gdqp); | |
729 | return error; | |
730 | } | |
731 | ||
732 | /* | |
733 | * Truncate file. Must have write permission and not be a directory. | |
734 | */ | |
735 | int | |
736 | xfs_setattr_size( | |
737 | struct xfs_inode *ip, | |
738 | struct iattr *iattr, | |
739 | int flags) | |
740 | { | |
741 | struct xfs_mount *mp = ip->i_mount; | |
742 | struct inode *inode = VFS_I(ip); | |
743 | int mask = iattr->ia_valid; | |
744 | struct xfs_trans *tp; | |
745 | int error; | |
746 | uint lock_flags; | |
747 | uint commit_flags = 0; | |
748 | ||
749 | trace_xfs_setattr(ip); | |
750 | ||
751 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
752 | return XFS_ERROR(EROFS); | |
753 | ||
754 | if (XFS_FORCED_SHUTDOWN(mp)) | |
755 | return XFS_ERROR(EIO); | |
756 | ||
757 | error = -inode_change_ok(inode, iattr); | |
758 | if (error) | |
759 | return XFS_ERROR(error); | |
760 | ||
761 | ASSERT(S_ISREG(ip->i_d.di_mode)); | |
762 | ASSERT((mask & (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET| | |
763 | ATTR_MTIME_SET|ATTR_KILL_SUID|ATTR_KILL_SGID| | |
764 | ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0); | |
765 | ||
766 | lock_flags = XFS_ILOCK_EXCL; | |
767 | if (!(flags & XFS_ATTR_NOLOCK)) | |
768 | lock_flags |= XFS_IOLOCK_EXCL; | |
769 | xfs_ilock(ip, lock_flags); | |
770 | ||
771 | /* | |
772 | * Short circuit the truncate case for zero length files. | |
773 | */ | |
774 | if (iattr->ia_size == 0 && | |
775 | ip->i_size == 0 && ip->i_d.di_nextents == 0) { | |
681b1200 CH |
776 | if (!(mask & (ATTR_CTIME|ATTR_MTIME))) |
777 | goto out_unlock; | |
778 | ||
779 | /* | |
780 | * Use the regular setattr path to update the timestamps. | |
781 | */ | |
782 | xfs_iunlock(ip, lock_flags); | |
783 | iattr->ia_valid &= ~ATTR_SIZE; | |
784 | return xfs_setattr_nonsize(ip, iattr, 0); | |
c4ed4243 CH |
785 | } |
786 | ||
787 | /* | |
788 | * Make sure that the dquots are attached to the inode. | |
789 | */ | |
790 | error = xfs_qm_dqattach_locked(ip, 0); | |
791 | if (error) | |
792 | goto out_unlock; | |
793 | ||
794 | /* | |
795 | * Now we can make the changes. Before we join the inode to the | |
796 | * transaction, take care of the part of the truncation that must be | |
797 | * done without the inode lock. This needs to be done before joining | |
798 | * the inode to the transaction, because the inode cannot be unlocked | |
799 | * once it is a part of the transaction. | |
800 | */ | |
801 | if (iattr->ia_size > ip->i_size) { | |
802 | /* | |
803 | * Do the first part of growing a file: zero any data in the | |
804 | * last block that is beyond the old EOF. We need to do this | |
805 | * before the inode is joined to the transaction to modify | |
806 | * i_size. | |
807 | */ | |
808 | error = xfs_zero_eof(ip, iattr->ia_size, ip->i_size); | |
809 | if (error) | |
810 | goto out_unlock; | |
811 | } | |
812 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
813 | lock_flags &= ~XFS_ILOCK_EXCL; | |
814 | ||
815 | /* | |
816 | * We are going to log the inode size change in this transaction so | |
817 | * any previous writes that are beyond the on disk EOF and the new | |
818 | * EOF that have not been written out need to be written here. If we | |
819 | * do not write the data out, we expose ourselves to the null files | |
820 | * problem. | |
821 | * | |
822 | * Only flush from the on disk size to the smaller of the in memory | |
823 | * file size or the new size as that's the range we really care about | |
824 | * here and prevents waiting for other data not within the range we | |
825 | * care about here. | |
826 | */ | |
827 | if (ip->i_size != ip->i_d.di_size && iattr->ia_size > ip->i_d.di_size) { | |
828 | error = xfs_flush_pages(ip, ip->i_d.di_size, iattr->ia_size, | |
829 | XBF_ASYNC, FI_NONE); | |
830 | if (error) | |
831 | goto out_unlock; | |
832 | } | |
833 | ||
834 | /* | |
835 | * Wait for all I/O to complete. | |
836 | */ | |
837 | xfs_ioend_wait(ip); | |
838 | ||
839 | error = -block_truncate_page(inode->i_mapping, iattr->ia_size, | |
840 | xfs_get_blocks); | |
841 | if (error) | |
842 | goto out_unlock; | |
843 | ||
844 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_SIZE); | |
845 | error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0, | |
846 | XFS_TRANS_PERM_LOG_RES, | |
847 | XFS_ITRUNCATE_LOG_COUNT); | |
848 | if (error) | |
849 | goto out_trans_cancel; | |
850 | ||
851 | truncate_setsize(inode, iattr->ia_size); | |
852 | ||
853 | commit_flags = XFS_TRANS_RELEASE_LOG_RES; | |
854 | lock_flags |= XFS_ILOCK_EXCL; | |
855 | ||
856 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
857 | ||
858 | xfs_trans_ijoin(tp, ip); | |
859 | ||
860 | /* | |
861 | * Only change the c/mtime if we are changing the size or we are | |
862 | * explicitly asked to change it. This handles the semantic difference | |
863 | * between truncate() and ftruncate() as implemented in the VFS. | |
864 | * | |
865 | * The regular truncate() case without ATTR_CTIME and ATTR_MTIME is a | |
866 | * special case where we need to update the times despite not having | |
867 | * these flags set. For all other operations the VFS set these flags | |
868 | * explicitly if it wants a timestamp update. | |
869 | */ | |
870 | if (iattr->ia_size != ip->i_size && | |
871 | (!(mask & (ATTR_CTIME | ATTR_MTIME)))) { | |
872 | iattr->ia_ctime = iattr->ia_mtime = | |
873 | current_fs_time(inode->i_sb); | |
874 | mask |= ATTR_CTIME | ATTR_MTIME; | |
875 | } | |
876 | ||
877 | if (iattr->ia_size > ip->i_size) { | |
878 | ip->i_d.di_size = iattr->ia_size; | |
879 | ip->i_size = iattr->ia_size; | |
880 | } else if (iattr->ia_size <= ip->i_size || | |
881 | (iattr->ia_size == 0 && ip->i_d.di_nextents)) { | |
8f04c47a | 882 | error = xfs_itruncate_data(&tp, ip, iattr->ia_size); |
c4ed4243 CH |
883 | if (error) |
884 | goto out_trans_abort; | |
885 | ||
886 | /* | |
887 | * Truncated "down", so we're removing references to old data | |
888 | * here - if we delay flushing for a long time, we expose | |
889 | * ourselves unduly to the notorious NULL files problem. So, | |
890 | * we mark this inode and flush it when the file is closed, | |
891 | * and do not wait the usual (long) time for writeout. | |
892 | */ | |
893 | xfs_iflags_set(ip, XFS_ITRUNCATED); | |
894 | } | |
895 | ||
896 | if (mask & ATTR_CTIME) { | |
897 | inode->i_ctime = iattr->ia_ctime; | |
898 | ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; | |
899 | ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec; | |
900 | ip->i_update_core = 1; | |
901 | } | |
902 | if (mask & ATTR_MTIME) { | |
903 | inode->i_mtime = iattr->ia_mtime; | |
904 | ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec; | |
905 | ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec; | |
906 | ip->i_update_core = 1; | |
907 | } | |
908 | ||
909 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
910 | ||
911 | XFS_STATS_INC(xs_ig_attrchg); | |
912 | ||
913 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
914 | xfs_trans_set_sync(tp); | |
915 | ||
916 | error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); | |
917 | out_unlock: | |
918 | if (lock_flags) | |
919 | xfs_iunlock(ip, lock_flags); | |
920 | return error; | |
921 | ||
922 | out_trans_abort: | |
923 | commit_flags |= XFS_TRANS_ABORT; | |
924 | out_trans_cancel: | |
925 | xfs_trans_cancel(tp, commit_flags); | |
926 | goto out_unlock; | |
927 | } | |
928 | ||
1da177e4 | 929 | STATIC int |
416c6d5b | 930 | xfs_vn_setattr( |
1da177e4 | 931 | struct dentry *dentry, |
0f285c8a | 932 | struct iattr *iattr) |
1da177e4 | 933 | { |
c4ed4243 CH |
934 | if (iattr->ia_valid & ATTR_SIZE) |
935 | return -xfs_setattr_size(XFS_I(dentry->d_inode), iattr, 0); | |
936 | return -xfs_setattr_nonsize(XFS_I(dentry->d_inode), iattr, 0); | |
1da177e4 LT |
937 | } |
938 | ||
f35642e2 ES |
939 | #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) |
940 | ||
941 | /* | |
942 | * Call fiemap helper to fill in user data. | |
943 | * Returns positive errors to xfs_getbmap. | |
944 | */ | |
945 | STATIC int | |
946 | xfs_fiemap_format( | |
947 | void **arg, | |
948 | struct getbmapx *bmv, | |
949 | int *full) | |
950 | { | |
951 | int error; | |
952 | struct fiemap_extent_info *fieinfo = *arg; | |
953 | u32 fiemap_flags = 0; | |
954 | u64 logical, physical, length; | |
955 | ||
956 | /* Do nothing for a hole */ | |
957 | if (bmv->bmv_block == -1LL) | |
958 | return 0; | |
959 | ||
960 | logical = BBTOB(bmv->bmv_offset); | |
961 | physical = BBTOB(bmv->bmv_block); | |
962 | length = BBTOB(bmv->bmv_length); | |
963 | ||
964 | if (bmv->bmv_oflags & BMV_OF_PREALLOC) | |
965 | fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN; | |
966 | else if (bmv->bmv_oflags & BMV_OF_DELALLOC) { | |
967 | fiemap_flags |= FIEMAP_EXTENT_DELALLOC; | |
968 | physical = 0; /* no block yet */ | |
969 | } | |
970 | if (bmv->bmv_oflags & BMV_OF_LAST) | |
971 | fiemap_flags |= FIEMAP_EXTENT_LAST; | |
972 | ||
973 | error = fiemap_fill_next_extent(fieinfo, logical, physical, | |
974 | length, fiemap_flags); | |
975 | if (error > 0) { | |
976 | error = 0; | |
977 | *full = 1; /* user array now full */ | |
978 | } | |
979 | ||
980 | return -error; | |
981 | } | |
982 | ||
983 | STATIC int | |
984 | xfs_vn_fiemap( | |
985 | struct inode *inode, | |
986 | struct fiemap_extent_info *fieinfo, | |
987 | u64 start, | |
988 | u64 length) | |
989 | { | |
990 | xfs_inode_t *ip = XFS_I(inode); | |
991 | struct getbmapx bm; | |
992 | int error; | |
993 | ||
994 | error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS); | |
995 | if (error) | |
996 | return error; | |
997 | ||
998 | /* Set up bmap header for xfs internal routine */ | |
999 | bm.bmv_offset = BTOBB(start); | |
1000 | /* Special case for whole file */ | |
1001 | if (length == FIEMAP_MAX_OFFSET) | |
1002 | bm.bmv_length = -1LL; | |
1003 | else | |
1004 | bm.bmv_length = BTOBB(length); | |
1005 | ||
97db39a1 | 1006 | /* We add one because in getbmap world count includes the header */ |
2d1ff3c7 TM |
1007 | bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM : |
1008 | fieinfo->fi_extents_max + 1; | |
1009 | bm.bmv_count = min_t(__s32, bm.bmv_count, | |
1010 | (PAGE_SIZE * 16 / sizeof(struct getbmapx))); | |
9af25465 | 1011 | bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES; |
f35642e2 ES |
1012 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) |
1013 | bm.bmv_iflags |= BMV_IF_ATTRFORK; | |
1014 | if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) | |
1015 | bm.bmv_iflags |= BMV_IF_DELALLOC; | |
1016 | ||
1017 | error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo); | |
1018 | if (error) | |
1019 | return -error; | |
1020 | ||
1021 | return 0; | |
1022 | } | |
1023 | ||
41be8bed | 1024 | static const struct inode_operations xfs_inode_operations = { |
18f4c644 | 1025 | .check_acl = xfs_check_acl, |
416c6d5b NS |
1026 | .getattr = xfs_vn_getattr, |
1027 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1028 | .setxattr = generic_setxattr, |
1029 | .getxattr = generic_getxattr, | |
1030 | .removexattr = generic_removexattr, | |
416c6d5b | 1031 | .listxattr = xfs_vn_listxattr, |
f35642e2 | 1032 | .fiemap = xfs_vn_fiemap, |
1da177e4 LT |
1033 | }; |
1034 | ||
41be8bed | 1035 | static const struct inode_operations xfs_dir_inode_operations = { |
416c6d5b NS |
1036 | .create = xfs_vn_create, |
1037 | .lookup = xfs_vn_lookup, | |
1038 | .link = xfs_vn_link, | |
1039 | .unlink = xfs_vn_unlink, | |
1040 | .symlink = xfs_vn_symlink, | |
1041 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
1042 | /* |
1043 | * Yes, XFS uses the same method for rmdir and unlink. | |
1044 | * | |
1045 | * There are some subtile differences deeper in the code, | |
1046 | * but we use S_ISDIR to check for those. | |
1047 | */ | |
1048 | .rmdir = xfs_vn_unlink, | |
416c6d5b NS |
1049 | .mknod = xfs_vn_mknod, |
1050 | .rename = xfs_vn_rename, | |
18f4c644 | 1051 | .check_acl = xfs_check_acl, |
416c6d5b NS |
1052 | .getattr = xfs_vn_getattr, |
1053 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1054 | .setxattr = generic_setxattr, |
1055 | .getxattr = generic_getxattr, | |
1056 | .removexattr = generic_removexattr, | |
416c6d5b | 1057 | .listxattr = xfs_vn_listxattr, |
1da177e4 LT |
1058 | }; |
1059 | ||
41be8bed | 1060 | static const struct inode_operations xfs_dir_ci_inode_operations = { |
384f3ced BN |
1061 | .create = xfs_vn_create, |
1062 | .lookup = xfs_vn_ci_lookup, | |
1063 | .link = xfs_vn_link, | |
1064 | .unlink = xfs_vn_unlink, | |
1065 | .symlink = xfs_vn_symlink, | |
1066 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
1067 | /* |
1068 | * Yes, XFS uses the same method for rmdir and unlink. | |
1069 | * | |
1070 | * There are some subtile differences deeper in the code, | |
1071 | * but we use S_ISDIR to check for those. | |
1072 | */ | |
1073 | .rmdir = xfs_vn_unlink, | |
384f3ced BN |
1074 | .mknod = xfs_vn_mknod, |
1075 | .rename = xfs_vn_rename, | |
18f4c644 | 1076 | .check_acl = xfs_check_acl, |
384f3ced BN |
1077 | .getattr = xfs_vn_getattr, |
1078 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1079 | .setxattr = generic_setxattr, |
1080 | .getxattr = generic_getxattr, | |
1081 | .removexattr = generic_removexattr, | |
384f3ced | 1082 | .listxattr = xfs_vn_listxattr, |
384f3ced BN |
1083 | }; |
1084 | ||
41be8bed | 1085 | static const struct inode_operations xfs_symlink_inode_operations = { |
1da177e4 | 1086 | .readlink = generic_readlink, |
416c6d5b NS |
1087 | .follow_link = xfs_vn_follow_link, |
1088 | .put_link = xfs_vn_put_link, | |
18f4c644 | 1089 | .check_acl = xfs_check_acl, |
416c6d5b NS |
1090 | .getattr = xfs_vn_getattr, |
1091 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1092 | .setxattr = generic_setxattr, |
1093 | .getxattr = generic_getxattr, | |
1094 | .removexattr = generic_removexattr, | |
416c6d5b | 1095 | .listxattr = xfs_vn_listxattr, |
1da177e4 | 1096 | }; |
41be8bed CH |
1097 | |
1098 | STATIC void | |
1099 | xfs_diflags_to_iflags( | |
1100 | struct inode *inode, | |
1101 | struct xfs_inode *ip) | |
1102 | { | |
1103 | if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) | |
1104 | inode->i_flags |= S_IMMUTABLE; | |
1105 | else | |
1106 | inode->i_flags &= ~S_IMMUTABLE; | |
1107 | if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) | |
1108 | inode->i_flags |= S_APPEND; | |
1109 | else | |
1110 | inode->i_flags &= ~S_APPEND; | |
1111 | if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) | |
1112 | inode->i_flags |= S_SYNC; | |
1113 | else | |
1114 | inode->i_flags &= ~S_SYNC; | |
1115 | if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) | |
1116 | inode->i_flags |= S_NOATIME; | |
1117 | else | |
1118 | inode->i_flags &= ~S_NOATIME; | |
1119 | } | |
1120 | ||
1121 | /* | |
1122 | * Initialize the Linux inode, set up the operation vectors and | |
1123 | * unlock the inode. | |
1124 | * | |
1125 | * When reading existing inodes from disk this is called directly | |
1126 | * from xfs_iget, when creating a new inode it is called from | |
1127 | * xfs_ialloc after setting up the inode. | |
bf904248 DC |
1128 | * |
1129 | * We are always called with an uninitialised linux inode here. | |
1130 | * We need to initialise the necessary fields and take a reference | |
1131 | * on it. | |
41be8bed CH |
1132 | */ |
1133 | void | |
1134 | xfs_setup_inode( | |
1135 | struct xfs_inode *ip) | |
1136 | { | |
bf904248 DC |
1137 | struct inode *inode = &ip->i_vnode; |
1138 | ||
1139 | inode->i_ino = ip->i_ino; | |
eaff8079 | 1140 | inode->i_state = I_NEW; |
646ec461 CH |
1141 | |
1142 | inode_sb_list_add(inode); | |
c6f6cd06 CH |
1143 | /* make the inode look hashed for the writeback code */ |
1144 | hlist_add_fake(&inode->i_hash); | |
41be8bed CH |
1145 | |
1146 | inode->i_mode = ip->i_d.di_mode; | |
1147 | inode->i_nlink = ip->i_d.di_nlink; | |
1148 | inode->i_uid = ip->i_d.di_uid; | |
1149 | inode->i_gid = ip->i_d.di_gid; | |
1150 | ||
1151 | switch (inode->i_mode & S_IFMT) { | |
1152 | case S_IFBLK: | |
1153 | case S_IFCHR: | |
1154 | inode->i_rdev = | |
1155 | MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
1156 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
1157 | break; | |
1158 | default: | |
1159 | inode->i_rdev = 0; | |
1160 | break; | |
1161 | } | |
1162 | ||
1163 | inode->i_generation = ip->i_d.di_gen; | |
1164 | i_size_write(inode, ip->i_d.di_size); | |
1165 | inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; | |
1166 | inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; | |
1167 | inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; | |
1168 | inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; | |
1169 | inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; | |
1170 | inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; | |
1171 | xfs_diflags_to_iflags(inode, ip); | |
41be8bed CH |
1172 | |
1173 | switch (inode->i_mode & S_IFMT) { | |
1174 | case S_IFREG: | |
1175 | inode->i_op = &xfs_inode_operations; | |
1176 | inode->i_fop = &xfs_file_operations; | |
1177 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
1178 | break; | |
1179 | case S_IFDIR: | |
1180 | if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb)) | |
1181 | inode->i_op = &xfs_dir_ci_inode_operations; | |
1182 | else | |
1183 | inode->i_op = &xfs_dir_inode_operations; | |
1184 | inode->i_fop = &xfs_dir_file_operations; | |
1185 | break; | |
1186 | case S_IFLNK: | |
1187 | inode->i_op = &xfs_symlink_inode_operations; | |
1188 | if (!(ip->i_df.if_flags & XFS_IFINLINE)) | |
1189 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
1190 | break; | |
1191 | default: | |
1192 | inode->i_op = &xfs_inode_operations; | |
1193 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
1194 | break; | |
1195 | } | |
1196 | ||
1197 | xfs_iflags_clear(ip, XFS_INEW); | |
1198 | barrier(); | |
1199 | ||
1200 | unlock_new_inode(inode); | |
1201 | } |