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" | |
6ca1c906 | 20 | #include "xfs_format.h" |
ef14f0c1 | 21 | #include "xfs_acl.h" |
1da177e4 LT |
22 | #include "xfs_log.h" |
23 | #include "xfs_trans.h" | |
24 | #include "xfs_sb.h" | |
25 | #include "xfs_ag.h" | |
1da177e4 | 26 | #include "xfs_alloc.h" |
1da177e4 LT |
27 | #include "xfs_quota.h" |
28 | #include "xfs_mount.h" | |
1da177e4 | 29 | #include "xfs_bmap_btree.h" |
1da177e4 LT |
30 | #include "xfs_dinode.h" |
31 | #include "xfs_inode.h" | |
32 | #include "xfs_bmap.h" | |
68988114 | 33 | #include "xfs_bmap_util.h" |
1da177e4 LT |
34 | #include "xfs_rtalloc.h" |
35 | #include "xfs_error.h" | |
36 | #include "xfs_itable.h" | |
1da177e4 LT |
37 | #include "xfs_attr.h" |
38 | #include "xfs_buf_item.h" | |
c4ed4243 | 39 | #include "xfs_inode_item.h" |
0b1b213f | 40 | #include "xfs_trace.h" |
27b52867 | 41 | #include "xfs_icache.h" |
c24b5dfa | 42 | #include "xfs_symlink.h" |
0cb97766 DC |
43 | #include "xfs_da_btree.h" |
44 | #include "xfs_dir2_format.h" | |
45 | #include "xfs_dir2_priv.h" | |
1da177e4 | 46 | |
16f7e0fe | 47 | #include <linux/capability.h> |
1da177e4 LT |
48 | #include <linux/xattr.h> |
49 | #include <linux/namei.h> | |
ef14f0c1 | 50 | #include <linux/posix_acl.h> |
446ada4a | 51 | #include <linux/security.h> |
f35642e2 | 52 | #include <linux/fiemap.h> |
5a0e3ad6 | 53 | #include <linux/slab.h> |
1da177e4 | 54 | |
8d2a5e6e DC |
55 | static int |
56 | xfs_initxattrs( | |
57 | struct inode *inode, | |
58 | const struct xattr *xattr_array, | |
59 | void *fs_info) | |
9d8f13ba | 60 | { |
8d2a5e6e DC |
61 | const struct xattr *xattr; |
62 | struct xfs_inode *ip = XFS_I(inode); | |
63 | int error = 0; | |
9d8f13ba MZ |
64 | |
65 | for (xattr = xattr_array; xattr->name != NULL; xattr++) { | |
66 | error = xfs_attr_set(ip, xattr->name, xattr->value, | |
67 | xattr->value_len, ATTR_SECURE); | |
68 | if (error < 0) | |
69 | break; | |
70 | } | |
71 | return error; | |
72 | } | |
73 | ||
446ada4a NS |
74 | /* |
75 | * Hook in SELinux. This is not quite correct yet, what we really need | |
76 | * here (as we do for default ACLs) is a mechanism by which creation of | |
77 | * these attrs can be journalled at inode creation time (along with the | |
78 | * inode, of course, such that log replay can't cause these to be lost). | |
79 | */ | |
9d8f13ba | 80 | |
446ada4a | 81 | STATIC int |
416c6d5b | 82 | xfs_init_security( |
af048193 | 83 | struct inode *inode, |
2a7dba39 EP |
84 | struct inode *dir, |
85 | const struct qstr *qstr) | |
446ada4a | 86 | { |
9d8f13ba MZ |
87 | return security_inode_init_security(inode, dir, qstr, |
88 | &xfs_initxattrs, NULL); | |
446ada4a NS |
89 | } |
90 | ||
556b8b16 BN |
91 | static void |
92 | xfs_dentry_to_name( | |
93 | struct xfs_name *namep, | |
0cb97766 DC |
94 | struct dentry *dentry, |
95 | int mode) | |
556b8b16 BN |
96 | { |
97 | namep->name = dentry->d_name.name; | |
98 | namep->len = dentry->d_name.len; | |
0cb97766 | 99 | namep->type = xfs_mode_to_ftype[(mode & S_IFMT) >> S_SHIFT]; |
556b8b16 BN |
100 | } |
101 | ||
7989cb8e | 102 | STATIC void |
416c6d5b | 103 | xfs_cleanup_inode( |
739bfb2a | 104 | struct inode *dir, |
af048193 | 105 | struct inode *inode, |
8f112e3b | 106 | struct dentry *dentry) |
3a69c7dc | 107 | { |
556b8b16 | 108 | struct xfs_name teardown; |
3a69c7dc YL |
109 | |
110 | /* Oh, the horror. | |
220b5284 | 111 | * If we can't add the ACL or we fail in |
416c6d5b | 112 | * xfs_init_security we must back out. |
3a69c7dc YL |
113 | * ENOSPC can hit here, among other things. |
114 | */ | |
0cb97766 | 115 | xfs_dentry_to_name(&teardown, dentry, 0); |
3a69c7dc | 116 | |
8f112e3b | 117 | xfs_remove(XFS_I(dir), &teardown, XFS_I(inode)); |
af048193 | 118 | iput(inode); |
3a69c7dc YL |
119 | } |
120 | ||
1da177e4 | 121 | STATIC int |
416c6d5b | 122 | xfs_vn_mknod( |
1da177e4 LT |
123 | struct inode *dir, |
124 | struct dentry *dentry, | |
1a67aafb | 125 | umode_t mode, |
1da177e4 LT |
126 | dev_t rdev) |
127 | { | |
db0bb7ba | 128 | struct inode *inode; |
979ebab1 | 129 | struct xfs_inode *ip = NULL; |
ef14f0c1 | 130 | struct posix_acl *default_acl = NULL; |
556b8b16 | 131 | struct xfs_name name; |
1da177e4 LT |
132 | int error; |
133 | ||
134 | /* | |
135 | * Irix uses Missed'em'V split, but doesn't want to see | |
136 | * the upper 5 bits of (14bit) major. | |
137 | */ | |
517b5e8c CH |
138 | if (S_ISCHR(mode) || S_ISBLK(mode)) { |
139 | if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) | |
140 | return -EINVAL; | |
141 | rdev = sysv_encode_dev(rdev); | |
142 | } else { | |
143 | rdev = 0; | |
144 | } | |
1da177e4 | 145 | |
ef14f0c1 CH |
146 | if (IS_POSIXACL(dir)) { |
147 | default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT); | |
148 | if (IS_ERR(default_acl)) | |
c46a131c | 149 | return PTR_ERR(default_acl); |
1da177e4 | 150 | |
e83f1eb6 CH |
151 | if (!default_acl) |
152 | mode &= ~current_umask(); | |
ef14f0c1 | 153 | } |
1da177e4 | 154 | |
0cb97766 | 155 | xfs_dentry_to_name(&name, dentry, mode); |
6c77b0ea | 156 | error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip); |
db0bb7ba CH |
157 | if (unlikely(error)) |
158 | goto out_free_acl; | |
446ada4a | 159 | |
01651646 | 160 | inode = VFS_I(ip); |
979ebab1 | 161 | |
2a7dba39 | 162 | error = xfs_init_security(inode, dir, &dentry->d_name); |
db0bb7ba CH |
163 | if (unlikely(error)) |
164 | goto out_cleanup_inode; | |
165 | ||
166 | if (default_acl) { | |
ef14f0c1 | 167 | error = -xfs_inherit_acl(inode, default_acl); |
826cae2f | 168 | default_acl = NULL; |
db0bb7ba CH |
169 | if (unlikely(error)) |
170 | goto out_cleanup_inode; | |
1da177e4 LT |
171 | } |
172 | ||
1da177e4 | 173 | |
db0bb7ba | 174 | d_instantiate(dentry, inode); |
db0bb7ba CH |
175 | return -error; |
176 | ||
177 | out_cleanup_inode: | |
8f112e3b | 178 | xfs_cleanup_inode(dir, inode, dentry); |
db0bb7ba | 179 | out_free_acl: |
ef14f0c1 | 180 | posix_acl_release(default_acl); |
1da177e4 LT |
181 | return -error; |
182 | } | |
183 | ||
184 | STATIC int | |
416c6d5b | 185 | xfs_vn_create( |
1da177e4 LT |
186 | struct inode *dir, |
187 | struct dentry *dentry, | |
4acdaf27 | 188 | umode_t mode, |
ebfc3b49 | 189 | bool flags) |
1da177e4 | 190 | { |
416c6d5b | 191 | return xfs_vn_mknod(dir, dentry, mode, 0); |
1da177e4 LT |
192 | } |
193 | ||
194 | STATIC int | |
416c6d5b | 195 | xfs_vn_mkdir( |
1da177e4 LT |
196 | struct inode *dir, |
197 | struct dentry *dentry, | |
18bb1db3 | 198 | umode_t mode) |
1da177e4 | 199 | { |
416c6d5b | 200 | return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0); |
1da177e4 LT |
201 | } |
202 | ||
203 | STATIC struct dentry * | |
416c6d5b | 204 | xfs_vn_lookup( |
1da177e4 LT |
205 | struct inode *dir, |
206 | struct dentry *dentry, | |
00cd8dd3 | 207 | unsigned int flags) |
1da177e4 | 208 | { |
ef1f5e7a | 209 | struct xfs_inode *cip; |
556b8b16 | 210 | struct xfs_name name; |
1da177e4 LT |
211 | int error; |
212 | ||
213 | if (dentry->d_name.len >= MAXNAMELEN) | |
214 | return ERR_PTR(-ENAMETOOLONG); | |
215 | ||
0cb97766 | 216 | xfs_dentry_to_name(&name, dentry, 0); |
384f3ced | 217 | error = xfs_lookup(XFS_I(dir), &name, &cip, NULL); |
67fcaa73 | 218 | if (unlikely(error)) { |
1da177e4 LT |
219 | if (unlikely(error != ENOENT)) |
220 | return ERR_PTR(-error); | |
221 | d_add(dentry, NULL); | |
222 | return NULL; | |
223 | } | |
224 | ||
01651646 | 225 | return d_splice_alias(VFS_I(cip), dentry); |
1da177e4 LT |
226 | } |
227 | ||
384f3ced BN |
228 | STATIC struct dentry * |
229 | xfs_vn_ci_lookup( | |
230 | struct inode *dir, | |
231 | struct dentry *dentry, | |
00cd8dd3 | 232 | unsigned int flags) |
384f3ced BN |
233 | { |
234 | struct xfs_inode *ip; | |
235 | struct xfs_name xname; | |
236 | struct xfs_name ci_name; | |
237 | struct qstr dname; | |
238 | int error; | |
239 | ||
240 | if (dentry->d_name.len >= MAXNAMELEN) | |
241 | return ERR_PTR(-ENAMETOOLONG); | |
242 | ||
0cb97766 | 243 | xfs_dentry_to_name(&xname, dentry, 0); |
384f3ced BN |
244 | error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name); |
245 | if (unlikely(error)) { | |
246 | if (unlikely(error != ENOENT)) | |
247 | return ERR_PTR(-error); | |
866d5dc9 BN |
248 | /* |
249 | * call d_add(dentry, NULL) here when d_drop_negative_children | |
250 | * is called in xfs_vn_mknod (ie. allow negative dentries | |
251 | * with CI filesystems). | |
252 | */ | |
384f3ced BN |
253 | return NULL; |
254 | } | |
255 | ||
256 | /* if exact match, just splice and exit */ | |
257 | if (!ci_name.name) | |
01651646 | 258 | return d_splice_alias(VFS_I(ip), dentry); |
384f3ced BN |
259 | |
260 | /* else case-insensitive match... */ | |
261 | dname.name = ci_name.name; | |
262 | dname.len = ci_name.len; | |
e45b590b | 263 | dentry = d_add_ci(dentry, VFS_I(ip), &dname); |
384f3ced BN |
264 | kmem_free(ci_name.name); |
265 | return dentry; | |
266 | } | |
267 | ||
1da177e4 | 268 | STATIC int |
416c6d5b | 269 | xfs_vn_link( |
1da177e4 LT |
270 | struct dentry *old_dentry, |
271 | struct inode *dir, | |
272 | struct dentry *dentry) | |
273 | { | |
d9424b3c | 274 | struct inode *inode = old_dentry->d_inode; |
556b8b16 | 275 | struct xfs_name name; |
1da177e4 LT |
276 | int error; |
277 | ||
0cb97766 | 278 | xfs_dentry_to_name(&name, dentry, inode->i_mode); |
1da177e4 | 279 | |
556b8b16 | 280 | error = xfs_link(XFS_I(dir), XFS_I(inode), &name); |
d9424b3c | 281 | if (unlikely(error)) |
a3da7896 | 282 | return -error; |
a3da7896 | 283 | |
7de9c6ee | 284 | ihold(inode); |
a3da7896 CH |
285 | d_instantiate(dentry, inode); |
286 | return 0; | |
1da177e4 LT |
287 | } |
288 | ||
289 | STATIC int | |
416c6d5b | 290 | xfs_vn_unlink( |
1da177e4 LT |
291 | struct inode *dir, |
292 | struct dentry *dentry) | |
293 | { | |
556b8b16 | 294 | struct xfs_name name; |
1da177e4 LT |
295 | int error; |
296 | ||
0cb97766 | 297 | xfs_dentry_to_name(&name, dentry, 0); |
1da177e4 | 298 | |
e5700704 CH |
299 | error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode)); |
300 | if (error) | |
301 | return error; | |
302 | ||
303 | /* | |
304 | * With unlink, the VFS makes the dentry "negative": no inode, | |
305 | * but still hashed. This is incompatible with case-insensitive | |
306 | * mode, so invalidate (unhash) the dentry in CI-mode. | |
307 | */ | |
308 | if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb)) | |
309 | d_invalidate(dentry); | |
310 | return 0; | |
1da177e4 LT |
311 | } |
312 | ||
313 | STATIC int | |
416c6d5b | 314 | xfs_vn_symlink( |
1da177e4 LT |
315 | struct inode *dir, |
316 | struct dentry *dentry, | |
317 | const char *symname) | |
318 | { | |
3937be5b CH |
319 | struct inode *inode; |
320 | struct xfs_inode *cip = NULL; | |
556b8b16 | 321 | struct xfs_name name; |
1da177e4 | 322 | int error; |
576b1d67 | 323 | umode_t mode; |
1da177e4 | 324 | |
3e5daf05 | 325 | mode = S_IFLNK | |
ce3b0f8d | 326 | (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO); |
0cb97766 | 327 | xfs_dentry_to_name(&name, dentry, mode); |
1da177e4 | 328 | |
6c77b0ea | 329 | error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip); |
3937be5b CH |
330 | if (unlikely(error)) |
331 | goto out; | |
332 | ||
01651646 | 333 | inode = VFS_I(cip); |
3937be5b | 334 | |
2a7dba39 | 335 | error = xfs_init_security(inode, dir, &dentry->d_name); |
3937be5b CH |
336 | if (unlikely(error)) |
337 | goto out_cleanup_inode; | |
338 | ||
339 | d_instantiate(dentry, inode); | |
3937be5b CH |
340 | return 0; |
341 | ||
342 | out_cleanup_inode: | |
8f112e3b | 343 | xfs_cleanup_inode(dir, inode, dentry); |
3937be5b | 344 | out: |
1da177e4 LT |
345 | return -error; |
346 | } | |
347 | ||
1da177e4 | 348 | STATIC int |
416c6d5b | 349 | xfs_vn_rename( |
1da177e4 LT |
350 | struct inode *odir, |
351 | struct dentry *odentry, | |
352 | struct inode *ndir, | |
353 | struct dentry *ndentry) | |
354 | { | |
355 | struct inode *new_inode = ndentry->d_inode; | |
556b8b16 BN |
356 | struct xfs_name oname; |
357 | struct xfs_name nname; | |
1da177e4 | 358 | |
0cb97766 DC |
359 | xfs_dentry_to_name(&oname, odentry, 0); |
360 | xfs_dentry_to_name(&nname, ndentry, odentry->d_inode->i_mode); | |
556b8b16 | 361 | |
e5700704 | 362 | return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode), |
cfa853e4 | 363 | XFS_I(ndir), &nname, new_inode ? |
0cb97766 | 364 | XFS_I(new_inode) : NULL); |
1da177e4 LT |
365 | } |
366 | ||
367 | /* | |
368 | * careful here - this function can get called recursively, so | |
369 | * we need to be very careful about how much stack we use. | |
370 | * uio is kmalloced for this reason... | |
371 | */ | |
008b150a | 372 | STATIC void * |
416c6d5b | 373 | xfs_vn_follow_link( |
1da177e4 LT |
374 | struct dentry *dentry, |
375 | struct nameidata *nd) | |
376 | { | |
1da177e4 | 377 | char *link; |
804c83c3 | 378 | int error = -ENOMEM; |
1da177e4 | 379 | |
f52720ca | 380 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
804c83c3 CH |
381 | if (!link) |
382 | goto out_err; | |
1da177e4 | 383 | |
739bfb2a | 384 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
804c83c3 CH |
385 | if (unlikely(error)) |
386 | goto out_kfree; | |
1da177e4 LT |
387 | |
388 | nd_set_link(nd, link); | |
008b150a | 389 | return NULL; |
804c83c3 CH |
390 | |
391 | out_kfree: | |
392 | kfree(link); | |
393 | out_err: | |
394 | nd_set_link(nd, ERR_PTR(error)); | |
395 | return NULL; | |
1da177e4 LT |
396 | } |
397 | ||
cde410a9 | 398 | STATIC void |
416c6d5b | 399 | xfs_vn_put_link( |
cde410a9 NS |
400 | struct dentry *dentry, |
401 | struct nameidata *nd, | |
402 | void *p) | |
1da177e4 | 403 | { |
cde410a9 NS |
404 | char *s = nd_get_link(nd); |
405 | ||
1da177e4 LT |
406 | if (!IS_ERR(s)) |
407 | kfree(s); | |
408 | } | |
409 | ||
1da177e4 | 410 | STATIC int |
416c6d5b | 411 | xfs_vn_getattr( |
c43f4087 CH |
412 | struct vfsmount *mnt, |
413 | struct dentry *dentry, | |
414 | struct kstat *stat) | |
1da177e4 | 415 | { |
c43f4087 CH |
416 | struct inode *inode = dentry->d_inode; |
417 | struct xfs_inode *ip = XFS_I(inode); | |
418 | struct xfs_mount *mp = ip->i_mount; | |
419 | ||
cca28fb8 | 420 | trace_xfs_getattr(ip); |
c43f4087 CH |
421 | |
422 | if (XFS_FORCED_SHUTDOWN(mp)) | |
ed32201e | 423 | return -XFS_ERROR(EIO); |
c43f4087 CH |
424 | |
425 | stat->size = XFS_ISIZE(ip); | |
426 | stat->dev = inode->i_sb->s_dev; | |
427 | stat->mode = ip->i_d.di_mode; | |
428 | stat->nlink = ip->i_d.di_nlink; | |
7aab1b28 DE |
429 | stat->uid = inode->i_uid; |
430 | stat->gid = inode->i_gid; | |
c43f4087 | 431 | stat->ino = ip->i_ino; |
c43f4087 | 432 | stat->atime = inode->i_atime; |
f9581b14 CH |
433 | stat->mtime = inode->i_mtime; |
434 | stat->ctime = inode->i_ctime; | |
c43f4087 CH |
435 | stat->blocks = |
436 | XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks); | |
437 | ||
438 | ||
439 | switch (inode->i_mode & S_IFMT) { | |
440 | case S_IFBLK: | |
441 | case S_IFCHR: | |
442 | stat->blksize = BLKDEV_IOSIZE; | |
443 | stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
444 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
445 | break; | |
446 | default: | |
71ddabb9 | 447 | if (XFS_IS_REALTIME_INODE(ip)) { |
c43f4087 CH |
448 | /* |
449 | * If the file blocks are being allocated from a | |
450 | * realtime volume, then return the inode's realtime | |
451 | * extent size or the realtime volume's extent size. | |
452 | */ | |
453 | stat->blksize = | |
454 | xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog; | |
455 | } else | |
456 | stat->blksize = xfs_preferred_iosize(mp); | |
457 | stat->rdev = 0; | |
458 | break; | |
69e23b9a | 459 | } |
c43f4087 CH |
460 | |
461 | return 0; | |
1da177e4 LT |
462 | } |
463 | ||
56c19e89 DC |
464 | static void |
465 | xfs_setattr_mode( | |
466 | struct xfs_trans *tp, | |
467 | struct xfs_inode *ip, | |
468 | struct iattr *iattr) | |
469 | { | |
470 | struct inode *inode = VFS_I(ip); | |
471 | umode_t mode = iattr->ia_mode; | |
472 | ||
473 | ASSERT(tp); | |
474 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); | |
475 | ||
56c19e89 DC |
476 | ip->i_d.di_mode &= S_IFMT; |
477 | ip->i_d.di_mode |= mode & ~S_IFMT; | |
478 | ||
479 | inode->i_mode &= S_IFMT; | |
480 | inode->i_mode |= mode & ~S_IFMT; | |
481 | } | |
482 | ||
c4ed4243 CH |
483 | int |
484 | xfs_setattr_nonsize( | |
485 | struct xfs_inode *ip, | |
486 | struct iattr *iattr, | |
487 | int flags) | |
488 | { | |
489 | xfs_mount_t *mp = ip->i_mount; | |
490 | struct inode *inode = VFS_I(ip); | |
491 | int mask = iattr->ia_valid; | |
492 | xfs_trans_t *tp; | |
493 | int error; | |
7aab1b28 DE |
494 | kuid_t uid = GLOBAL_ROOT_UID, iuid = GLOBAL_ROOT_UID; |
495 | kgid_t gid = GLOBAL_ROOT_GID, igid = GLOBAL_ROOT_GID; | |
c4ed4243 CH |
496 | struct xfs_dquot *udqp = NULL, *gdqp = NULL; |
497 | struct xfs_dquot *olddquot1 = NULL, *olddquot2 = NULL; | |
498 | ||
499 | trace_xfs_setattr(ip); | |
500 | ||
42c49d7f CM |
501 | /* If acls are being inherited, we already have this checked */ |
502 | if (!(flags & XFS_ATTR_NOACL)) { | |
503 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
504 | return XFS_ERROR(EROFS); | |
c4ed4243 | 505 | |
42c49d7f CM |
506 | if (XFS_FORCED_SHUTDOWN(mp)) |
507 | return XFS_ERROR(EIO); | |
c4ed4243 | 508 | |
42c49d7f CM |
509 | error = -inode_change_ok(inode, iattr); |
510 | if (error) | |
511 | return XFS_ERROR(error); | |
512 | } | |
c4ed4243 CH |
513 | |
514 | ASSERT((mask & ATTR_SIZE) == 0); | |
515 | ||
516 | /* | |
517 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
518 | * before we start any other transactions. Trying to do this later | |
519 | * is messy. We don't care to take a readlock to look at the ids | |
520 | * in inode here, because we can't hold it across the trans_reserve. | |
521 | * If the IDs do change before we take the ilock, we're covered | |
522 | * because the i_*dquot fields will get updated anyway. | |
523 | */ | |
524 | if (XFS_IS_QUOTA_ON(mp) && (mask & (ATTR_UID|ATTR_GID))) { | |
525 | uint qflags = 0; | |
526 | ||
527 | if ((mask & ATTR_UID) && XFS_IS_UQUOTA_ON(mp)) { | |
528 | uid = iattr->ia_uid; | |
529 | qflags |= XFS_QMOPT_UQUOTA; | |
530 | } else { | |
7aab1b28 | 531 | uid = inode->i_uid; |
c4ed4243 CH |
532 | } |
533 | if ((mask & ATTR_GID) && XFS_IS_GQUOTA_ON(mp)) { | |
534 | gid = iattr->ia_gid; | |
535 | qflags |= XFS_QMOPT_GQUOTA; | |
536 | } else { | |
7aab1b28 | 537 | gid = inode->i_gid; |
c4ed4243 CH |
538 | } |
539 | ||
540 | /* | |
541 | * We take a reference when we initialize udqp and gdqp, | |
542 | * so it is important that we never blindly double trip on | |
543 | * the same variable. See xfs_create() for an example. | |
544 | */ | |
545 | ASSERT(udqp == NULL); | |
546 | ASSERT(gdqp == NULL); | |
7aab1b28 DE |
547 | error = xfs_qm_vop_dqalloc(ip, xfs_kuid_to_uid(uid), |
548 | xfs_kgid_to_gid(gid), | |
549 | xfs_get_projid(ip), | |
550 | qflags, &udqp, &gdqp, NULL); | |
c4ed4243 CH |
551 | if (error) |
552 | return error; | |
553 | } | |
554 | ||
555 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
3d3c8b52 | 556 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); |
c4ed4243 CH |
557 | if (error) |
558 | goto out_dqrele; | |
559 | ||
560 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
561 | ||
562 | /* | |
563 | * Change file ownership. Must be the owner or privileged. | |
564 | */ | |
565 | if (mask & (ATTR_UID|ATTR_GID)) { | |
566 | /* | |
567 | * These IDs could have changed since we last looked at them. | |
568 | * But, we're assured that if the ownership did change | |
569 | * while we didn't have the inode locked, inode's dquot(s) | |
570 | * would have changed also. | |
571 | */ | |
7aab1b28 DE |
572 | iuid = inode->i_uid; |
573 | igid = inode->i_gid; | |
c4ed4243 CH |
574 | gid = (mask & ATTR_GID) ? iattr->ia_gid : igid; |
575 | uid = (mask & ATTR_UID) ? iattr->ia_uid : iuid; | |
576 | ||
577 | /* | |
578 | * Do a quota reservation only if uid/gid is actually | |
579 | * going to change. | |
580 | */ | |
581 | if (XFS_IS_QUOTA_RUNNING(mp) && | |
7aab1b28 DE |
582 | ((XFS_IS_UQUOTA_ON(mp) && !uid_eq(iuid, uid)) || |
583 | (XFS_IS_GQUOTA_ON(mp) && !gid_eq(igid, gid)))) { | |
c4ed4243 CH |
584 | ASSERT(tp); |
585 | error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, | |
92f8ff73 | 586 | NULL, capable(CAP_FOWNER) ? |
c4ed4243 CH |
587 | XFS_QMOPT_FORCE_RES : 0); |
588 | if (error) /* out of quota */ | |
589 | goto out_trans_cancel; | |
590 | } | |
591 | } | |
592 | ||
ddc3415a | 593 | xfs_trans_ijoin(tp, ip, 0); |
c4ed4243 CH |
594 | |
595 | /* | |
596 | * Change file ownership. Must be the owner or privileged. | |
597 | */ | |
598 | if (mask & (ATTR_UID|ATTR_GID)) { | |
599 | /* | |
600 | * CAP_FSETID overrides the following restrictions: | |
601 | * | |
602 | * The set-user-ID and set-group-ID bits of a file will be | |
603 | * cleared upon successful return from chown() | |
604 | */ | |
605 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
606 | !capable(CAP_FSETID)) | |
607 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
608 | ||
609 | /* | |
610 | * Change the ownerships and register quota modifications | |
611 | * in the transaction. | |
612 | */ | |
7aab1b28 | 613 | if (!uid_eq(iuid, uid)) { |
c4ed4243 CH |
614 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_UQUOTA_ON(mp)) { |
615 | ASSERT(mask & ATTR_UID); | |
616 | ASSERT(udqp); | |
617 | olddquot1 = xfs_qm_vop_chown(tp, ip, | |
618 | &ip->i_udquot, udqp); | |
619 | } | |
7aab1b28 | 620 | ip->i_d.di_uid = xfs_kuid_to_uid(uid); |
c4ed4243 CH |
621 | inode->i_uid = uid; |
622 | } | |
7aab1b28 | 623 | if (!gid_eq(igid, gid)) { |
c4ed4243 CH |
624 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_GQUOTA_ON(mp)) { |
625 | ASSERT(!XFS_IS_PQUOTA_ON(mp)); | |
626 | ASSERT(mask & ATTR_GID); | |
627 | ASSERT(gdqp); | |
628 | olddquot2 = xfs_qm_vop_chown(tp, ip, | |
629 | &ip->i_gdquot, gdqp); | |
630 | } | |
7aab1b28 | 631 | ip->i_d.di_gid = xfs_kgid_to_gid(gid); |
c4ed4243 CH |
632 | inode->i_gid = gid; |
633 | } | |
634 | } | |
635 | ||
636 | /* | |
637 | * Change file access modes. | |
638 | */ | |
56c19e89 DC |
639 | if (mask & ATTR_MODE) |
640 | xfs_setattr_mode(tp, ip, iattr); | |
c4ed4243 CH |
641 | |
642 | /* | |
643 | * Change file access or modified times. | |
644 | */ | |
645 | if (mask & ATTR_ATIME) { | |
646 | inode->i_atime = iattr->ia_atime; | |
647 | ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec; | |
648 | ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec; | |
c4ed4243 CH |
649 | } |
650 | if (mask & ATTR_CTIME) { | |
651 | inode->i_ctime = iattr->ia_ctime; | |
652 | ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; | |
653 | ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec; | |
c4ed4243 CH |
654 | } |
655 | if (mask & ATTR_MTIME) { | |
656 | inode->i_mtime = iattr->ia_mtime; | |
657 | ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec; | |
658 | ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec; | |
c4ed4243 CH |
659 | } |
660 | ||
661 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
662 | ||
663 | XFS_STATS_INC(xs_ig_attrchg); | |
664 | ||
665 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
666 | xfs_trans_set_sync(tp); | |
667 | error = xfs_trans_commit(tp, 0); | |
668 | ||
669 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
670 | ||
671 | /* | |
672 | * Release any dquot(s) the inode had kept before chown. | |
673 | */ | |
674 | xfs_qm_dqrele(olddquot1); | |
675 | xfs_qm_dqrele(olddquot2); | |
676 | xfs_qm_dqrele(udqp); | |
677 | xfs_qm_dqrele(gdqp); | |
678 | ||
679 | if (error) | |
680 | return XFS_ERROR(error); | |
681 | ||
682 | /* | |
683 | * XXX(hch): Updating the ACL entries is not atomic vs the i_mode | |
684 | * update. We could avoid this with linked transactions | |
685 | * and passing down the transaction pointer all the way | |
686 | * to attr_set. No previous user of the generic | |
687 | * Posix ACL code seems to care about this issue either. | |
688 | */ | |
689 | if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) { | |
690 | error = -xfs_acl_chmod(inode); | |
691 | if (error) | |
692 | return XFS_ERROR(error); | |
693 | } | |
694 | ||
695 | return 0; | |
696 | ||
697 | out_trans_cancel: | |
698 | xfs_trans_cancel(tp, 0); | |
699 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
700 | out_dqrele: | |
701 | xfs_qm_dqrele(udqp); | |
702 | xfs_qm_dqrele(gdqp); | |
703 | return error; | |
704 | } | |
705 | ||
706 | /* | |
707 | * Truncate file. Must have write permission and not be a directory. | |
708 | */ | |
709 | int | |
710 | xfs_setattr_size( | |
711 | struct xfs_inode *ip, | |
712 | struct iattr *iattr, | |
713 | int flags) | |
714 | { | |
715 | struct xfs_mount *mp = ip->i_mount; | |
716 | struct inode *inode = VFS_I(ip); | |
717 | int mask = iattr->ia_valid; | |
673e8e59 | 718 | xfs_off_t oldsize, newsize; |
c4ed4243 CH |
719 | struct xfs_trans *tp; |
720 | int error; | |
f38996f5 | 721 | uint lock_flags = 0; |
c4ed4243 CH |
722 | uint commit_flags = 0; |
723 | ||
724 | trace_xfs_setattr(ip); | |
725 | ||
726 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
727 | return XFS_ERROR(EROFS); | |
728 | ||
729 | if (XFS_FORCED_SHUTDOWN(mp)) | |
730 | return XFS_ERROR(EIO); | |
731 | ||
732 | error = -inode_change_ok(inode, iattr); | |
733 | if (error) | |
734 | return XFS_ERROR(error); | |
735 | ||
736 | ASSERT(S_ISREG(ip->i_d.di_mode)); | |
56c19e89 DC |
737 | ASSERT((mask & (ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET| |
738 | ATTR_MTIME_SET|ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0); | |
c4ed4243 | 739 | |
f38996f5 | 740 | if (!(flags & XFS_ATTR_NOLOCK)) { |
c4ed4243 | 741 | lock_flags |= XFS_IOLOCK_EXCL; |
f38996f5 CH |
742 | xfs_ilock(ip, lock_flags); |
743 | } | |
c4ed4243 | 744 | |
ce7ae151 | 745 | oldsize = inode->i_size; |
673e8e59 CH |
746 | newsize = iattr->ia_size; |
747 | ||
c4ed4243 CH |
748 | /* |
749 | * Short circuit the truncate case for zero length files. | |
750 | */ | |
673e8e59 | 751 | if (newsize == 0 && oldsize == 0 && ip->i_d.di_nextents == 0) { |
681b1200 CH |
752 | if (!(mask & (ATTR_CTIME|ATTR_MTIME))) |
753 | goto out_unlock; | |
754 | ||
755 | /* | |
756 | * Use the regular setattr path to update the timestamps. | |
757 | */ | |
758 | xfs_iunlock(ip, lock_flags); | |
759 | iattr->ia_valid &= ~ATTR_SIZE; | |
760 | return xfs_setattr_nonsize(ip, iattr, 0); | |
c4ed4243 CH |
761 | } |
762 | ||
763 | /* | |
764 | * Make sure that the dquots are attached to the inode. | |
765 | */ | |
f38996f5 | 766 | error = xfs_qm_dqattach(ip, 0); |
c4ed4243 CH |
767 | if (error) |
768 | goto out_unlock; | |
769 | ||
770 | /* | |
771 | * Now we can make the changes. Before we join the inode to the | |
772 | * transaction, take care of the part of the truncation that must be | |
773 | * done without the inode lock. This needs to be done before joining | |
774 | * the inode to the transaction, because the inode cannot be unlocked | |
775 | * once it is a part of the transaction. | |
776 | */ | |
673e8e59 | 777 | if (newsize > oldsize) { |
c4ed4243 CH |
778 | /* |
779 | * Do the first part of growing a file: zero any data in the | |
780 | * last block that is beyond the old EOF. We need to do this | |
781 | * before the inode is joined to the transaction to modify | |
782 | * i_size. | |
783 | */ | |
673e8e59 | 784 | error = xfs_zero_eof(ip, newsize, oldsize); |
c4ed4243 CH |
785 | if (error) |
786 | goto out_unlock; | |
787 | } | |
c4ed4243 CH |
788 | |
789 | /* | |
790 | * We are going to log the inode size change in this transaction so | |
791 | * any previous writes that are beyond the on disk EOF and the new | |
792 | * EOF that have not been written out need to be written here. If we | |
793 | * do not write the data out, we expose ourselves to the null files | |
794 | * problem. | |
795 | * | |
796 | * Only flush from the on disk size to the smaller of the in memory | |
797 | * file size or the new size as that's the range we really care about | |
798 | * here and prevents waiting for other data not within the range we | |
799 | * care about here. | |
800 | */ | |
673e8e59 | 801 | if (oldsize != ip->i_d.di_size && newsize > ip->i_d.di_size) { |
4bc1ea6b DC |
802 | error = -filemap_write_and_wait_range(VFS_I(ip)->i_mapping, |
803 | ip->i_d.di_size, newsize); | |
c4ed4243 CH |
804 | if (error) |
805 | goto out_unlock; | |
806 | } | |
807 | ||
808 | /* | |
4a06fd26 | 809 | * Wait for all direct I/O to complete. |
c4ed4243 | 810 | */ |
4a06fd26 | 811 | inode_dio_wait(inode); |
c4ed4243 | 812 | |
673e8e59 | 813 | error = -block_truncate_page(inode->i_mapping, newsize, xfs_get_blocks); |
c4ed4243 CH |
814 | if (error) |
815 | goto out_unlock; | |
816 | ||
817 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_SIZE); | |
3d3c8b52 | 818 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_itruncate, 0, 0); |
c4ed4243 CH |
819 | if (error) |
820 | goto out_trans_cancel; | |
821 | ||
673e8e59 | 822 | truncate_setsize(inode, newsize); |
c4ed4243 CH |
823 | |
824 | commit_flags = XFS_TRANS_RELEASE_LOG_RES; | |
825 | lock_flags |= XFS_ILOCK_EXCL; | |
826 | ||
827 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
828 | ||
ddc3415a | 829 | xfs_trans_ijoin(tp, ip, 0); |
c4ed4243 CH |
830 | |
831 | /* | |
832 | * Only change the c/mtime if we are changing the size or we are | |
833 | * explicitly asked to change it. This handles the semantic difference | |
834 | * between truncate() and ftruncate() as implemented in the VFS. | |
835 | * | |
836 | * The regular truncate() case without ATTR_CTIME and ATTR_MTIME is a | |
837 | * special case where we need to update the times despite not having | |
838 | * these flags set. For all other operations the VFS set these flags | |
839 | * explicitly if it wants a timestamp update. | |
840 | */ | |
673e8e59 | 841 | if (newsize != oldsize && (!(mask & (ATTR_CTIME | ATTR_MTIME)))) { |
c4ed4243 CH |
842 | iattr->ia_ctime = iattr->ia_mtime = |
843 | current_fs_time(inode->i_sb); | |
844 | mask |= ATTR_CTIME | ATTR_MTIME; | |
845 | } | |
846 | ||
673e8e59 CH |
847 | /* |
848 | * The first thing we do is set the size to new_size permanently on | |
849 | * disk. This way we don't have to worry about anyone ever being able | |
850 | * to look at the data being freed even in the face of a crash. | |
851 | * What we're getting around here is the case where we free a block, it | |
852 | * is allocated to another file, it is written to, and then we crash. | |
853 | * If the new data gets written to the file but the log buffers | |
854 | * containing the free and reallocation don't, then we'd end up with | |
855 | * garbage in the blocks being freed. As long as we make the new size | |
856 | * permanent before actually freeing any blocks it doesn't matter if | |
857 | * they get written to. | |
858 | */ | |
859 | ip->i_d.di_size = newsize; | |
673e8e59 CH |
860 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
861 | ||
862 | if (newsize <= oldsize) { | |
863 | error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, newsize); | |
c4ed4243 CH |
864 | if (error) |
865 | goto out_trans_abort; | |
866 | ||
867 | /* | |
868 | * Truncated "down", so we're removing references to old data | |
869 | * here - if we delay flushing for a long time, we expose | |
870 | * ourselves unduly to the notorious NULL files problem. So, | |
871 | * we mark this inode and flush it when the file is closed, | |
872 | * and do not wait the usual (long) time for writeout. | |
873 | */ | |
874 | xfs_iflags_set(ip, XFS_ITRUNCATED); | |
27b52867 BF |
875 | |
876 | /* A truncate down always removes post-EOF blocks. */ | |
877 | xfs_inode_clear_eofblocks_tag(ip); | |
c4ed4243 CH |
878 | } |
879 | ||
56c19e89 DC |
880 | /* |
881 | * Change file access modes. | |
882 | */ | |
883 | if (mask & ATTR_MODE) | |
884 | xfs_setattr_mode(tp, ip, iattr); | |
885 | ||
c4ed4243 CH |
886 | if (mask & ATTR_CTIME) { |
887 | inode->i_ctime = iattr->ia_ctime; | |
888 | ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; | |
889 | ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec; | |
c4ed4243 CH |
890 | } |
891 | if (mask & ATTR_MTIME) { | |
892 | inode->i_mtime = iattr->ia_mtime; | |
893 | ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec; | |
894 | ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec; | |
c4ed4243 CH |
895 | } |
896 | ||
897 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
898 | ||
899 | XFS_STATS_INC(xs_ig_attrchg); | |
900 | ||
901 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
902 | xfs_trans_set_sync(tp); | |
903 | ||
904 | error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); | |
905 | out_unlock: | |
906 | if (lock_flags) | |
907 | xfs_iunlock(ip, lock_flags); | |
908 | return error; | |
909 | ||
910 | out_trans_abort: | |
911 | commit_flags |= XFS_TRANS_ABORT; | |
912 | out_trans_cancel: | |
913 | xfs_trans_cancel(tp, commit_flags); | |
914 | goto out_unlock; | |
915 | } | |
916 | ||
1da177e4 | 917 | STATIC int |
416c6d5b | 918 | xfs_vn_setattr( |
1da177e4 | 919 | struct dentry *dentry, |
0f285c8a | 920 | struct iattr *iattr) |
1da177e4 | 921 | { |
c4ed4243 CH |
922 | if (iattr->ia_valid & ATTR_SIZE) |
923 | return -xfs_setattr_size(XFS_I(dentry->d_inode), iattr, 0); | |
924 | return -xfs_setattr_nonsize(XFS_I(dentry->d_inode), iattr, 0); | |
1da177e4 LT |
925 | } |
926 | ||
69ff2826 CH |
927 | STATIC int |
928 | xfs_vn_update_time( | |
929 | struct inode *inode, | |
930 | struct timespec *now, | |
931 | int flags) | |
932 | { | |
933 | struct xfs_inode *ip = XFS_I(inode); | |
934 | struct xfs_mount *mp = ip->i_mount; | |
935 | struct xfs_trans *tp; | |
936 | int error; | |
937 | ||
938 | trace_xfs_update_time(ip); | |
939 | ||
940 | tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); | |
3d3c8b52 | 941 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_fsyncts, 0, 0); |
69ff2826 CH |
942 | if (error) { |
943 | xfs_trans_cancel(tp, 0); | |
944 | return -error; | |
945 | } | |
946 | ||
947 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
948 | if (flags & S_CTIME) { | |
949 | inode->i_ctime = *now; | |
950 | ip->i_d.di_ctime.t_sec = (__int32_t)now->tv_sec; | |
951 | ip->i_d.di_ctime.t_nsec = (__int32_t)now->tv_nsec; | |
952 | } | |
953 | if (flags & S_MTIME) { | |
954 | inode->i_mtime = *now; | |
955 | ip->i_d.di_mtime.t_sec = (__int32_t)now->tv_sec; | |
956 | ip->i_d.di_mtime.t_nsec = (__int32_t)now->tv_nsec; | |
957 | } | |
958 | if (flags & S_ATIME) { | |
959 | inode->i_atime = *now; | |
960 | ip->i_d.di_atime.t_sec = (__int32_t)now->tv_sec; | |
961 | ip->i_d.di_atime.t_nsec = (__int32_t)now->tv_nsec; | |
962 | } | |
963 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
964 | xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP); | |
965 | return -xfs_trans_commit(tp, 0); | |
966 | } | |
967 | ||
f35642e2 ES |
968 | #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) |
969 | ||
970 | /* | |
971 | * Call fiemap helper to fill in user data. | |
972 | * Returns positive errors to xfs_getbmap. | |
973 | */ | |
974 | STATIC int | |
975 | xfs_fiemap_format( | |
976 | void **arg, | |
977 | struct getbmapx *bmv, | |
978 | int *full) | |
979 | { | |
980 | int error; | |
981 | struct fiemap_extent_info *fieinfo = *arg; | |
982 | u32 fiemap_flags = 0; | |
983 | u64 logical, physical, length; | |
984 | ||
985 | /* Do nothing for a hole */ | |
986 | if (bmv->bmv_block == -1LL) | |
987 | return 0; | |
988 | ||
989 | logical = BBTOB(bmv->bmv_offset); | |
990 | physical = BBTOB(bmv->bmv_block); | |
991 | length = BBTOB(bmv->bmv_length); | |
992 | ||
993 | if (bmv->bmv_oflags & BMV_OF_PREALLOC) | |
994 | fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN; | |
995 | else if (bmv->bmv_oflags & BMV_OF_DELALLOC) { | |
635c4d0b JL |
996 | fiemap_flags |= (FIEMAP_EXTENT_DELALLOC | |
997 | FIEMAP_EXTENT_UNKNOWN); | |
f35642e2 ES |
998 | physical = 0; /* no block yet */ |
999 | } | |
1000 | if (bmv->bmv_oflags & BMV_OF_LAST) | |
1001 | fiemap_flags |= FIEMAP_EXTENT_LAST; | |
1002 | ||
1003 | error = fiemap_fill_next_extent(fieinfo, logical, physical, | |
1004 | length, fiemap_flags); | |
1005 | if (error > 0) { | |
1006 | error = 0; | |
1007 | *full = 1; /* user array now full */ | |
1008 | } | |
1009 | ||
1010 | return -error; | |
1011 | } | |
1012 | ||
1013 | STATIC int | |
1014 | xfs_vn_fiemap( | |
1015 | struct inode *inode, | |
1016 | struct fiemap_extent_info *fieinfo, | |
1017 | u64 start, | |
1018 | u64 length) | |
1019 | { | |
1020 | xfs_inode_t *ip = XFS_I(inode); | |
1021 | struct getbmapx bm; | |
1022 | int error; | |
1023 | ||
1024 | error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS); | |
1025 | if (error) | |
1026 | return error; | |
1027 | ||
1028 | /* Set up bmap header for xfs internal routine */ | |
1029 | bm.bmv_offset = BTOBB(start); | |
1030 | /* Special case for whole file */ | |
1031 | if (length == FIEMAP_MAX_OFFSET) | |
1032 | bm.bmv_length = -1LL; | |
1033 | else | |
1034 | bm.bmv_length = BTOBB(length); | |
1035 | ||
97db39a1 | 1036 | /* We add one because in getbmap world count includes the header */ |
2d1ff3c7 TM |
1037 | bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM : |
1038 | fieinfo->fi_extents_max + 1; | |
1039 | bm.bmv_count = min_t(__s32, bm.bmv_count, | |
1040 | (PAGE_SIZE * 16 / sizeof(struct getbmapx))); | |
9af25465 | 1041 | bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES; |
f35642e2 ES |
1042 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) |
1043 | bm.bmv_iflags |= BMV_IF_ATTRFORK; | |
1044 | if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) | |
1045 | bm.bmv_iflags |= BMV_IF_DELALLOC; | |
1046 | ||
1047 | error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo); | |
1048 | if (error) | |
1049 | return -error; | |
1050 | ||
1051 | return 0; | |
1052 | } | |
1053 | ||
41be8bed | 1054 | static const struct inode_operations xfs_inode_operations = { |
4e34e719 | 1055 | .get_acl = xfs_get_acl, |
416c6d5b NS |
1056 | .getattr = xfs_vn_getattr, |
1057 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1058 | .setxattr = generic_setxattr, |
1059 | .getxattr = generic_getxattr, | |
1060 | .removexattr = generic_removexattr, | |
416c6d5b | 1061 | .listxattr = xfs_vn_listxattr, |
f35642e2 | 1062 | .fiemap = xfs_vn_fiemap, |
69ff2826 | 1063 | .update_time = xfs_vn_update_time, |
1da177e4 LT |
1064 | }; |
1065 | ||
41be8bed | 1066 | static const struct inode_operations xfs_dir_inode_operations = { |
416c6d5b NS |
1067 | .create = xfs_vn_create, |
1068 | .lookup = xfs_vn_lookup, | |
1069 | .link = xfs_vn_link, | |
1070 | .unlink = xfs_vn_unlink, | |
1071 | .symlink = xfs_vn_symlink, | |
1072 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
1073 | /* |
1074 | * Yes, XFS uses the same method for rmdir and unlink. | |
1075 | * | |
1076 | * There are some subtile differences deeper in the code, | |
1077 | * but we use S_ISDIR to check for those. | |
1078 | */ | |
1079 | .rmdir = xfs_vn_unlink, | |
416c6d5b NS |
1080 | .mknod = xfs_vn_mknod, |
1081 | .rename = xfs_vn_rename, | |
4e34e719 | 1082 | .get_acl = xfs_get_acl, |
416c6d5b NS |
1083 | .getattr = xfs_vn_getattr, |
1084 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1085 | .setxattr = generic_setxattr, |
1086 | .getxattr = generic_getxattr, | |
1087 | .removexattr = generic_removexattr, | |
416c6d5b | 1088 | .listxattr = xfs_vn_listxattr, |
69ff2826 | 1089 | .update_time = xfs_vn_update_time, |
1da177e4 LT |
1090 | }; |
1091 | ||
41be8bed | 1092 | static const struct inode_operations xfs_dir_ci_inode_operations = { |
384f3ced BN |
1093 | .create = xfs_vn_create, |
1094 | .lookup = xfs_vn_ci_lookup, | |
1095 | .link = xfs_vn_link, | |
1096 | .unlink = xfs_vn_unlink, | |
1097 | .symlink = xfs_vn_symlink, | |
1098 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
1099 | /* |
1100 | * Yes, XFS uses the same method for rmdir and unlink. | |
1101 | * | |
1102 | * There are some subtile differences deeper in the code, | |
1103 | * but we use S_ISDIR to check for those. | |
1104 | */ | |
1105 | .rmdir = xfs_vn_unlink, | |
384f3ced BN |
1106 | .mknod = xfs_vn_mknod, |
1107 | .rename = xfs_vn_rename, | |
4e34e719 | 1108 | .get_acl = xfs_get_acl, |
384f3ced BN |
1109 | .getattr = xfs_vn_getattr, |
1110 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1111 | .setxattr = generic_setxattr, |
1112 | .getxattr = generic_getxattr, | |
1113 | .removexattr = generic_removexattr, | |
384f3ced | 1114 | .listxattr = xfs_vn_listxattr, |
69ff2826 | 1115 | .update_time = xfs_vn_update_time, |
384f3ced BN |
1116 | }; |
1117 | ||
41be8bed | 1118 | static const struct inode_operations xfs_symlink_inode_operations = { |
1da177e4 | 1119 | .readlink = generic_readlink, |
416c6d5b NS |
1120 | .follow_link = xfs_vn_follow_link, |
1121 | .put_link = xfs_vn_put_link, | |
4e34e719 | 1122 | .get_acl = xfs_get_acl, |
416c6d5b NS |
1123 | .getattr = xfs_vn_getattr, |
1124 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1125 | .setxattr = generic_setxattr, |
1126 | .getxattr = generic_getxattr, | |
1127 | .removexattr = generic_removexattr, | |
416c6d5b | 1128 | .listxattr = xfs_vn_listxattr, |
69ff2826 | 1129 | .update_time = xfs_vn_update_time, |
1da177e4 | 1130 | }; |
41be8bed CH |
1131 | |
1132 | STATIC void | |
1133 | xfs_diflags_to_iflags( | |
1134 | struct inode *inode, | |
1135 | struct xfs_inode *ip) | |
1136 | { | |
1137 | if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) | |
1138 | inode->i_flags |= S_IMMUTABLE; | |
1139 | else | |
1140 | inode->i_flags &= ~S_IMMUTABLE; | |
1141 | if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) | |
1142 | inode->i_flags |= S_APPEND; | |
1143 | else | |
1144 | inode->i_flags &= ~S_APPEND; | |
1145 | if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) | |
1146 | inode->i_flags |= S_SYNC; | |
1147 | else | |
1148 | inode->i_flags &= ~S_SYNC; | |
1149 | if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) | |
1150 | inode->i_flags |= S_NOATIME; | |
1151 | else | |
1152 | inode->i_flags &= ~S_NOATIME; | |
1153 | } | |
1154 | ||
1155 | /* | |
1156 | * Initialize the Linux inode, set up the operation vectors and | |
1157 | * unlock the inode. | |
1158 | * | |
1159 | * When reading existing inodes from disk this is called directly | |
1160 | * from xfs_iget, when creating a new inode it is called from | |
1161 | * xfs_ialloc after setting up the inode. | |
bf904248 DC |
1162 | * |
1163 | * We are always called with an uninitialised linux inode here. | |
1164 | * We need to initialise the necessary fields and take a reference | |
1165 | * on it. | |
41be8bed CH |
1166 | */ |
1167 | void | |
1168 | xfs_setup_inode( | |
1169 | struct xfs_inode *ip) | |
1170 | { | |
bf904248 DC |
1171 | struct inode *inode = &ip->i_vnode; |
1172 | ||
1173 | inode->i_ino = ip->i_ino; | |
eaff8079 | 1174 | inode->i_state = I_NEW; |
646ec461 CH |
1175 | |
1176 | inode_sb_list_add(inode); | |
c6f6cd06 CH |
1177 | /* make the inode look hashed for the writeback code */ |
1178 | hlist_add_fake(&inode->i_hash); | |
41be8bed CH |
1179 | |
1180 | inode->i_mode = ip->i_d.di_mode; | |
bfe86848 | 1181 | set_nlink(inode, ip->i_d.di_nlink); |
7aab1b28 DE |
1182 | inode->i_uid = xfs_uid_to_kuid(ip->i_d.di_uid); |
1183 | inode->i_gid = xfs_gid_to_kgid(ip->i_d.di_gid); | |
41be8bed CH |
1184 | |
1185 | switch (inode->i_mode & S_IFMT) { | |
1186 | case S_IFBLK: | |
1187 | case S_IFCHR: | |
1188 | inode->i_rdev = | |
1189 | MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
1190 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
1191 | break; | |
1192 | default: | |
1193 | inode->i_rdev = 0; | |
1194 | break; | |
1195 | } | |
1196 | ||
1197 | inode->i_generation = ip->i_d.di_gen; | |
1198 | i_size_write(inode, ip->i_d.di_size); | |
1199 | inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; | |
1200 | inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; | |
1201 | inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; | |
1202 | inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; | |
1203 | inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; | |
1204 | inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; | |
1205 | xfs_diflags_to_iflags(inode, ip); | |
41be8bed CH |
1206 | |
1207 | switch (inode->i_mode & S_IFMT) { | |
1208 | case S_IFREG: | |
1209 | inode->i_op = &xfs_inode_operations; | |
1210 | inode->i_fop = &xfs_file_operations; | |
1211 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
1212 | break; | |
1213 | case S_IFDIR: | |
1214 | if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb)) | |
1215 | inode->i_op = &xfs_dir_ci_inode_operations; | |
1216 | else | |
1217 | inode->i_op = &xfs_dir_inode_operations; | |
1218 | inode->i_fop = &xfs_dir_file_operations; | |
1219 | break; | |
1220 | case S_IFLNK: | |
1221 | inode->i_op = &xfs_symlink_inode_operations; | |
1222 | if (!(ip->i_df.if_flags & XFS_IFINLINE)) | |
1223 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
1224 | break; | |
1225 | default: | |
1226 | inode->i_op = &xfs_inode_operations; | |
1227 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
1228 | break; | |
1229 | } | |
1230 | ||
510792ee CH |
1231 | /* |
1232 | * If there is no attribute fork no ACL can exist on this inode, | |
1233 | * and it can't have any file capabilities attached to it either. | |
1234 | */ | |
1235 | if (!XFS_IFORK_Q(ip)) { | |
1236 | inode_has_no_xattr(inode); | |
6311b108 | 1237 | cache_no_acl(inode); |
510792ee | 1238 | } |
6311b108 | 1239 | |
41be8bed CH |
1240 | xfs_iflags_clear(ip, XFS_INEW); |
1241 | barrier(); | |
1242 | ||
1243 | unlock_new_inode(inode); | |
1244 | } |