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" |
1da177e4 LT |
21 | #include "xfs_log.h" |
22 | #include "xfs_trans.h" | |
23 | #include "xfs_sb.h" | |
24 | #include "xfs_ag.h" | |
1da177e4 | 25 | #include "xfs_alloc.h" |
1da177e4 LT |
26 | #include "xfs_quota.h" |
27 | #include "xfs_mount.h" | |
1da177e4 | 28 | #include "xfs_bmap_btree.h" |
1da177e4 LT |
29 | #include "xfs_dinode.h" |
30 | #include "xfs_inode.h" | |
31 | #include "xfs_bmap.h" | |
1da177e4 LT |
32 | #include "xfs_rtalloc.h" |
33 | #include "xfs_error.h" | |
34 | #include "xfs_itable.h" | |
1da177e4 LT |
35 | #include "xfs_attr.h" |
36 | #include "xfs_buf_item.h" | |
37 | #include "xfs_utils.h" | |
739bfb2a | 38 | #include "xfs_vnodeops.h" |
c4ed4243 | 39 | #include "xfs_inode_item.h" |
0b1b213f | 40 | #include "xfs_trace.h" |
27b52867 | 41 | #include "xfs_icache.h" |
1da177e4 | 42 | |
16f7e0fe | 43 | #include <linux/capability.h> |
1da177e4 LT |
44 | #include <linux/xattr.h> |
45 | #include <linux/namei.h> | |
ef14f0c1 | 46 | #include <linux/posix_acl.h> |
446ada4a | 47 | #include <linux/security.h> |
f35642e2 | 48 | #include <linux/fiemap.h> |
5a0e3ad6 | 49 | #include <linux/slab.h> |
1da177e4 | 50 | |
8d2a5e6e DC |
51 | static int |
52 | xfs_initxattrs( | |
53 | struct inode *inode, | |
54 | const struct xattr *xattr_array, | |
55 | void *fs_info) | |
9d8f13ba | 56 | { |
8d2a5e6e DC |
57 | const struct xattr *xattr; |
58 | struct xfs_inode *ip = XFS_I(inode); | |
59 | int error = 0; | |
9d8f13ba MZ |
60 | |
61 | for (xattr = xattr_array; xattr->name != NULL; xattr++) { | |
62 | error = xfs_attr_set(ip, xattr->name, xattr->value, | |
63 | xattr->value_len, ATTR_SECURE); | |
64 | if (error < 0) | |
65 | break; | |
66 | } | |
67 | return error; | |
68 | } | |
69 | ||
446ada4a NS |
70 | /* |
71 | * Hook in SELinux. This is not quite correct yet, what we really need | |
72 | * here (as we do for default ACLs) is a mechanism by which creation of | |
73 | * these attrs can be journalled at inode creation time (along with the | |
74 | * inode, of course, such that log replay can't cause these to be lost). | |
75 | */ | |
9d8f13ba | 76 | |
446ada4a | 77 | STATIC int |
416c6d5b | 78 | xfs_init_security( |
af048193 | 79 | struct inode *inode, |
2a7dba39 EP |
80 | struct inode *dir, |
81 | const struct qstr *qstr) | |
446ada4a | 82 | { |
9d8f13ba MZ |
83 | return security_inode_init_security(inode, dir, qstr, |
84 | &xfs_initxattrs, NULL); | |
446ada4a NS |
85 | } |
86 | ||
556b8b16 BN |
87 | static void |
88 | xfs_dentry_to_name( | |
89 | struct xfs_name *namep, | |
90 | struct dentry *dentry) | |
91 | { | |
92 | namep->name = dentry->d_name.name; | |
93 | namep->len = dentry->d_name.len; | |
94 | } | |
95 | ||
7989cb8e | 96 | STATIC void |
416c6d5b | 97 | xfs_cleanup_inode( |
739bfb2a | 98 | struct inode *dir, |
af048193 | 99 | struct inode *inode, |
8f112e3b | 100 | struct dentry *dentry) |
3a69c7dc | 101 | { |
556b8b16 | 102 | struct xfs_name teardown; |
3a69c7dc YL |
103 | |
104 | /* Oh, the horror. | |
220b5284 | 105 | * If we can't add the ACL or we fail in |
416c6d5b | 106 | * xfs_init_security we must back out. |
3a69c7dc YL |
107 | * ENOSPC can hit here, among other things. |
108 | */ | |
556b8b16 | 109 | xfs_dentry_to_name(&teardown, dentry); |
3a69c7dc | 110 | |
8f112e3b | 111 | xfs_remove(XFS_I(dir), &teardown, XFS_I(inode)); |
af048193 | 112 | iput(inode); |
3a69c7dc YL |
113 | } |
114 | ||
1da177e4 | 115 | STATIC int |
416c6d5b | 116 | xfs_vn_mknod( |
1da177e4 LT |
117 | struct inode *dir, |
118 | struct dentry *dentry, | |
1a67aafb | 119 | umode_t mode, |
1da177e4 LT |
120 | dev_t rdev) |
121 | { | |
db0bb7ba | 122 | struct inode *inode; |
979ebab1 | 123 | struct xfs_inode *ip = NULL; |
ef14f0c1 | 124 | struct posix_acl *default_acl = NULL; |
556b8b16 | 125 | struct xfs_name name; |
1da177e4 LT |
126 | int error; |
127 | ||
128 | /* | |
129 | * Irix uses Missed'em'V split, but doesn't want to see | |
130 | * the upper 5 bits of (14bit) major. | |
131 | */ | |
517b5e8c CH |
132 | if (S_ISCHR(mode) || S_ISBLK(mode)) { |
133 | if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) | |
134 | return -EINVAL; | |
135 | rdev = sysv_encode_dev(rdev); | |
136 | } else { | |
137 | rdev = 0; | |
138 | } | |
1da177e4 | 139 | |
ef14f0c1 CH |
140 | if (IS_POSIXACL(dir)) { |
141 | default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT); | |
142 | if (IS_ERR(default_acl)) | |
c46a131c | 143 | return PTR_ERR(default_acl); |
1da177e4 | 144 | |
e83f1eb6 CH |
145 | if (!default_acl) |
146 | mode &= ~current_umask(); | |
ef14f0c1 | 147 | } |
1da177e4 | 148 | |
517b5e8c | 149 | xfs_dentry_to_name(&name, dentry); |
6c77b0ea | 150 | error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip); |
db0bb7ba CH |
151 | if (unlikely(error)) |
152 | goto out_free_acl; | |
446ada4a | 153 | |
01651646 | 154 | inode = VFS_I(ip); |
979ebab1 | 155 | |
2a7dba39 | 156 | error = xfs_init_security(inode, dir, &dentry->d_name); |
db0bb7ba CH |
157 | if (unlikely(error)) |
158 | goto out_cleanup_inode; | |
159 | ||
160 | if (default_acl) { | |
ef14f0c1 | 161 | error = -xfs_inherit_acl(inode, default_acl); |
826cae2f | 162 | default_acl = NULL; |
db0bb7ba CH |
163 | if (unlikely(error)) |
164 | goto out_cleanup_inode; | |
1da177e4 LT |
165 | } |
166 | ||
1da177e4 | 167 | |
db0bb7ba | 168 | d_instantiate(dentry, inode); |
db0bb7ba CH |
169 | return -error; |
170 | ||
171 | out_cleanup_inode: | |
8f112e3b | 172 | xfs_cleanup_inode(dir, inode, dentry); |
db0bb7ba | 173 | out_free_acl: |
ef14f0c1 | 174 | posix_acl_release(default_acl); |
1da177e4 LT |
175 | return -error; |
176 | } | |
177 | ||
178 | STATIC int | |
416c6d5b | 179 | xfs_vn_create( |
1da177e4 LT |
180 | struct inode *dir, |
181 | struct dentry *dentry, | |
4acdaf27 | 182 | umode_t mode, |
ebfc3b49 | 183 | bool flags) |
1da177e4 | 184 | { |
416c6d5b | 185 | return xfs_vn_mknod(dir, dentry, mode, 0); |
1da177e4 LT |
186 | } |
187 | ||
188 | STATIC int | |
416c6d5b | 189 | xfs_vn_mkdir( |
1da177e4 LT |
190 | struct inode *dir, |
191 | struct dentry *dentry, | |
18bb1db3 | 192 | umode_t mode) |
1da177e4 | 193 | { |
416c6d5b | 194 | return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0); |
1da177e4 LT |
195 | } |
196 | ||
197 | STATIC struct dentry * | |
416c6d5b | 198 | xfs_vn_lookup( |
1da177e4 LT |
199 | struct inode *dir, |
200 | struct dentry *dentry, | |
00cd8dd3 | 201 | unsigned int flags) |
1da177e4 | 202 | { |
ef1f5e7a | 203 | struct xfs_inode *cip; |
556b8b16 | 204 | struct xfs_name name; |
1da177e4 LT |
205 | int error; |
206 | ||
207 | if (dentry->d_name.len >= MAXNAMELEN) | |
208 | return ERR_PTR(-ENAMETOOLONG); | |
209 | ||
556b8b16 | 210 | xfs_dentry_to_name(&name, dentry); |
384f3ced | 211 | error = xfs_lookup(XFS_I(dir), &name, &cip, NULL); |
67fcaa73 | 212 | if (unlikely(error)) { |
1da177e4 LT |
213 | if (unlikely(error != ENOENT)) |
214 | return ERR_PTR(-error); | |
215 | d_add(dentry, NULL); | |
216 | return NULL; | |
217 | } | |
218 | ||
01651646 | 219 | return d_splice_alias(VFS_I(cip), dentry); |
1da177e4 LT |
220 | } |
221 | ||
384f3ced BN |
222 | STATIC struct dentry * |
223 | xfs_vn_ci_lookup( | |
224 | struct inode *dir, | |
225 | struct dentry *dentry, | |
00cd8dd3 | 226 | unsigned int flags) |
384f3ced BN |
227 | { |
228 | struct xfs_inode *ip; | |
229 | struct xfs_name xname; | |
230 | struct xfs_name ci_name; | |
231 | struct qstr dname; | |
232 | int error; | |
233 | ||
234 | if (dentry->d_name.len >= MAXNAMELEN) | |
235 | return ERR_PTR(-ENAMETOOLONG); | |
236 | ||
237 | xfs_dentry_to_name(&xname, dentry); | |
238 | error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name); | |
239 | if (unlikely(error)) { | |
240 | if (unlikely(error != ENOENT)) | |
241 | return ERR_PTR(-error); | |
866d5dc9 BN |
242 | /* |
243 | * call d_add(dentry, NULL) here when d_drop_negative_children | |
244 | * is called in xfs_vn_mknod (ie. allow negative dentries | |
245 | * with CI filesystems). | |
246 | */ | |
384f3ced BN |
247 | return NULL; |
248 | } | |
249 | ||
250 | /* if exact match, just splice and exit */ | |
251 | if (!ci_name.name) | |
01651646 | 252 | return d_splice_alias(VFS_I(ip), dentry); |
384f3ced BN |
253 | |
254 | /* else case-insensitive match... */ | |
255 | dname.name = ci_name.name; | |
256 | dname.len = ci_name.len; | |
e45b590b | 257 | dentry = d_add_ci(dentry, VFS_I(ip), &dname); |
384f3ced BN |
258 | kmem_free(ci_name.name); |
259 | return dentry; | |
260 | } | |
261 | ||
1da177e4 | 262 | STATIC int |
416c6d5b | 263 | xfs_vn_link( |
1da177e4 LT |
264 | struct dentry *old_dentry, |
265 | struct inode *dir, | |
266 | struct dentry *dentry) | |
267 | { | |
d9424b3c | 268 | struct inode *inode = old_dentry->d_inode; |
556b8b16 | 269 | struct xfs_name name; |
1da177e4 LT |
270 | int error; |
271 | ||
556b8b16 | 272 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 273 | |
556b8b16 | 274 | error = xfs_link(XFS_I(dir), XFS_I(inode), &name); |
d9424b3c | 275 | if (unlikely(error)) |
a3da7896 | 276 | return -error; |
a3da7896 | 277 | |
7de9c6ee | 278 | ihold(inode); |
a3da7896 CH |
279 | d_instantiate(dentry, inode); |
280 | return 0; | |
1da177e4 LT |
281 | } |
282 | ||
283 | STATIC int | |
416c6d5b | 284 | xfs_vn_unlink( |
1da177e4 LT |
285 | struct inode *dir, |
286 | struct dentry *dentry) | |
287 | { | |
556b8b16 | 288 | struct xfs_name name; |
1da177e4 LT |
289 | int error; |
290 | ||
556b8b16 | 291 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 292 | |
e5700704 CH |
293 | error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode)); |
294 | if (error) | |
295 | return error; | |
296 | ||
297 | /* | |
298 | * With unlink, the VFS makes the dentry "negative": no inode, | |
299 | * but still hashed. This is incompatible with case-insensitive | |
300 | * mode, so invalidate (unhash) the dentry in CI-mode. | |
301 | */ | |
302 | if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb)) | |
303 | d_invalidate(dentry); | |
304 | return 0; | |
1da177e4 LT |
305 | } |
306 | ||
307 | STATIC int | |
416c6d5b | 308 | xfs_vn_symlink( |
1da177e4 LT |
309 | struct inode *dir, |
310 | struct dentry *dentry, | |
311 | const char *symname) | |
312 | { | |
3937be5b CH |
313 | struct inode *inode; |
314 | struct xfs_inode *cip = NULL; | |
556b8b16 | 315 | struct xfs_name name; |
1da177e4 | 316 | int error; |
576b1d67 | 317 | umode_t mode; |
1da177e4 | 318 | |
3e5daf05 | 319 | mode = S_IFLNK | |
ce3b0f8d | 320 | (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO); |
556b8b16 | 321 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 322 | |
6c77b0ea | 323 | error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip); |
3937be5b CH |
324 | if (unlikely(error)) |
325 | goto out; | |
326 | ||
01651646 | 327 | inode = VFS_I(cip); |
3937be5b | 328 | |
2a7dba39 | 329 | error = xfs_init_security(inode, dir, &dentry->d_name); |
3937be5b CH |
330 | if (unlikely(error)) |
331 | goto out_cleanup_inode; | |
332 | ||
333 | d_instantiate(dentry, inode); | |
3937be5b CH |
334 | return 0; |
335 | ||
336 | out_cleanup_inode: | |
8f112e3b | 337 | xfs_cleanup_inode(dir, inode, dentry); |
3937be5b | 338 | out: |
1da177e4 LT |
339 | return -error; |
340 | } | |
341 | ||
1da177e4 | 342 | STATIC int |
416c6d5b | 343 | xfs_vn_rename( |
1da177e4 LT |
344 | struct inode *odir, |
345 | struct dentry *odentry, | |
346 | struct inode *ndir, | |
347 | struct dentry *ndentry) | |
348 | { | |
349 | struct inode *new_inode = ndentry->d_inode; | |
556b8b16 BN |
350 | struct xfs_name oname; |
351 | struct xfs_name nname; | |
1da177e4 | 352 | |
556b8b16 BN |
353 | xfs_dentry_to_name(&oname, odentry); |
354 | xfs_dentry_to_name(&nname, ndentry); | |
355 | ||
e5700704 | 356 | return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode), |
cfa853e4 CH |
357 | XFS_I(ndir), &nname, new_inode ? |
358 | XFS_I(new_inode) : NULL); | |
1da177e4 LT |
359 | } |
360 | ||
361 | /* | |
362 | * careful here - this function can get called recursively, so | |
363 | * we need to be very careful about how much stack we use. | |
364 | * uio is kmalloced for this reason... | |
365 | */ | |
008b150a | 366 | STATIC void * |
416c6d5b | 367 | xfs_vn_follow_link( |
1da177e4 LT |
368 | struct dentry *dentry, |
369 | struct nameidata *nd) | |
370 | { | |
1da177e4 | 371 | char *link; |
804c83c3 | 372 | int error = -ENOMEM; |
1da177e4 | 373 | |
f52720ca | 374 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
804c83c3 CH |
375 | if (!link) |
376 | goto out_err; | |
1da177e4 | 377 | |
739bfb2a | 378 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
804c83c3 CH |
379 | if (unlikely(error)) |
380 | goto out_kfree; | |
1da177e4 LT |
381 | |
382 | nd_set_link(nd, link); | |
008b150a | 383 | return NULL; |
804c83c3 CH |
384 | |
385 | out_kfree: | |
386 | kfree(link); | |
387 | out_err: | |
388 | nd_set_link(nd, ERR_PTR(error)); | |
389 | return NULL; | |
1da177e4 LT |
390 | } |
391 | ||
cde410a9 | 392 | STATIC void |
416c6d5b | 393 | xfs_vn_put_link( |
cde410a9 NS |
394 | struct dentry *dentry, |
395 | struct nameidata *nd, | |
396 | void *p) | |
1da177e4 | 397 | { |
cde410a9 NS |
398 | char *s = nd_get_link(nd); |
399 | ||
1da177e4 LT |
400 | if (!IS_ERR(s)) |
401 | kfree(s); | |
402 | } | |
403 | ||
1da177e4 | 404 | STATIC int |
416c6d5b | 405 | xfs_vn_getattr( |
c43f4087 CH |
406 | struct vfsmount *mnt, |
407 | struct dentry *dentry, | |
408 | struct kstat *stat) | |
1da177e4 | 409 | { |
c43f4087 CH |
410 | struct inode *inode = dentry->d_inode; |
411 | struct xfs_inode *ip = XFS_I(inode); | |
412 | struct xfs_mount *mp = ip->i_mount; | |
413 | ||
cca28fb8 | 414 | trace_xfs_getattr(ip); |
c43f4087 CH |
415 | |
416 | if (XFS_FORCED_SHUTDOWN(mp)) | |
ed32201e | 417 | return -XFS_ERROR(EIO); |
c43f4087 CH |
418 | |
419 | stat->size = XFS_ISIZE(ip); | |
420 | stat->dev = inode->i_sb->s_dev; | |
421 | stat->mode = ip->i_d.di_mode; | |
422 | stat->nlink = ip->i_d.di_nlink; | |
423 | stat->uid = ip->i_d.di_uid; | |
424 | stat->gid = ip->i_d.di_gid; | |
425 | stat->ino = ip->i_ino; | |
c43f4087 | 426 | stat->atime = inode->i_atime; |
f9581b14 CH |
427 | stat->mtime = inode->i_mtime; |
428 | stat->ctime = inode->i_ctime; | |
c43f4087 CH |
429 | stat->blocks = |
430 | XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks); | |
431 | ||
432 | ||
433 | switch (inode->i_mode & S_IFMT) { | |
434 | case S_IFBLK: | |
435 | case S_IFCHR: | |
436 | stat->blksize = BLKDEV_IOSIZE; | |
437 | stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
438 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
439 | break; | |
440 | default: | |
71ddabb9 | 441 | if (XFS_IS_REALTIME_INODE(ip)) { |
c43f4087 CH |
442 | /* |
443 | * If the file blocks are being allocated from a | |
444 | * realtime volume, then return the inode's realtime | |
445 | * extent size or the realtime volume's extent size. | |
446 | */ | |
447 | stat->blksize = | |
448 | xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog; | |
449 | } else | |
450 | stat->blksize = xfs_preferred_iosize(mp); | |
451 | stat->rdev = 0; | |
452 | break; | |
69e23b9a | 453 | } |
c43f4087 CH |
454 | |
455 | return 0; | |
1da177e4 LT |
456 | } |
457 | ||
c4ed4243 CH |
458 | int |
459 | xfs_setattr_nonsize( | |
460 | struct xfs_inode *ip, | |
461 | struct iattr *iattr, | |
462 | int flags) | |
463 | { | |
464 | xfs_mount_t *mp = ip->i_mount; | |
465 | struct inode *inode = VFS_I(ip); | |
466 | int mask = iattr->ia_valid; | |
467 | xfs_trans_t *tp; | |
468 | int error; | |
469 | uid_t uid = 0, iuid = 0; | |
470 | gid_t gid = 0, igid = 0; | |
471 | struct xfs_dquot *udqp = NULL, *gdqp = NULL; | |
472 | struct xfs_dquot *olddquot1 = NULL, *olddquot2 = NULL; | |
473 | ||
474 | trace_xfs_setattr(ip); | |
475 | ||
476 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
477 | return XFS_ERROR(EROFS); | |
478 | ||
479 | if (XFS_FORCED_SHUTDOWN(mp)) | |
480 | return XFS_ERROR(EIO); | |
481 | ||
482 | error = -inode_change_ok(inode, iattr); | |
483 | if (error) | |
484 | return XFS_ERROR(error); | |
485 | ||
486 | ASSERT((mask & ATTR_SIZE) == 0); | |
487 | ||
488 | /* | |
489 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
490 | * before we start any other transactions. Trying to do this later | |
491 | * is messy. We don't care to take a readlock to look at the ids | |
492 | * in inode here, because we can't hold it across the trans_reserve. | |
493 | * If the IDs do change before we take the ilock, we're covered | |
494 | * because the i_*dquot fields will get updated anyway. | |
495 | */ | |
496 | if (XFS_IS_QUOTA_ON(mp) && (mask & (ATTR_UID|ATTR_GID))) { | |
497 | uint qflags = 0; | |
498 | ||
499 | if ((mask & ATTR_UID) && XFS_IS_UQUOTA_ON(mp)) { | |
500 | uid = iattr->ia_uid; | |
501 | qflags |= XFS_QMOPT_UQUOTA; | |
502 | } else { | |
503 | uid = ip->i_d.di_uid; | |
504 | } | |
505 | if ((mask & ATTR_GID) && XFS_IS_GQUOTA_ON(mp)) { | |
506 | gid = iattr->ia_gid; | |
507 | qflags |= XFS_QMOPT_GQUOTA; | |
508 | } else { | |
509 | gid = ip->i_d.di_gid; | |
510 | } | |
511 | ||
512 | /* | |
513 | * We take a reference when we initialize udqp and gdqp, | |
514 | * so it is important that we never blindly double trip on | |
515 | * the same variable. See xfs_create() for an example. | |
516 | */ | |
517 | ASSERT(udqp == NULL); | |
518 | ASSERT(gdqp == NULL); | |
519 | error = xfs_qm_vop_dqalloc(ip, uid, gid, xfs_get_projid(ip), | |
520 | qflags, &udqp, &gdqp); | |
521 | if (error) | |
522 | return error; | |
523 | } | |
524 | ||
525 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
526 | error = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); | |
527 | if (error) | |
528 | goto out_dqrele; | |
529 | ||
530 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
531 | ||
532 | /* | |
533 | * Change file ownership. Must be the owner or privileged. | |
534 | */ | |
535 | if (mask & (ATTR_UID|ATTR_GID)) { | |
536 | /* | |
537 | * These IDs could have changed since we last looked at them. | |
538 | * But, we're assured that if the ownership did change | |
539 | * while we didn't have the inode locked, inode's dquot(s) | |
540 | * would have changed also. | |
541 | */ | |
542 | iuid = ip->i_d.di_uid; | |
543 | igid = ip->i_d.di_gid; | |
544 | gid = (mask & ATTR_GID) ? iattr->ia_gid : igid; | |
545 | uid = (mask & ATTR_UID) ? iattr->ia_uid : iuid; | |
546 | ||
547 | /* | |
548 | * Do a quota reservation only if uid/gid is actually | |
549 | * going to change. | |
550 | */ | |
551 | if (XFS_IS_QUOTA_RUNNING(mp) && | |
552 | ((XFS_IS_UQUOTA_ON(mp) && iuid != uid) || | |
553 | (XFS_IS_GQUOTA_ON(mp) && igid != gid))) { | |
554 | ASSERT(tp); | |
555 | error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, | |
556 | capable(CAP_FOWNER) ? | |
557 | XFS_QMOPT_FORCE_RES : 0); | |
558 | if (error) /* out of quota */ | |
559 | goto out_trans_cancel; | |
560 | } | |
561 | } | |
562 | ||
ddc3415a | 563 | xfs_trans_ijoin(tp, ip, 0); |
c4ed4243 CH |
564 | |
565 | /* | |
566 | * Change file ownership. Must be the owner or privileged. | |
567 | */ | |
568 | if (mask & (ATTR_UID|ATTR_GID)) { | |
569 | /* | |
570 | * CAP_FSETID overrides the following restrictions: | |
571 | * | |
572 | * The set-user-ID and set-group-ID bits of a file will be | |
573 | * cleared upon successful return from chown() | |
574 | */ | |
575 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
576 | !capable(CAP_FSETID)) | |
577 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
578 | ||
579 | /* | |
580 | * Change the ownerships and register quota modifications | |
581 | * in the transaction. | |
582 | */ | |
583 | if (iuid != uid) { | |
584 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_UQUOTA_ON(mp)) { | |
585 | ASSERT(mask & ATTR_UID); | |
586 | ASSERT(udqp); | |
587 | olddquot1 = xfs_qm_vop_chown(tp, ip, | |
588 | &ip->i_udquot, udqp); | |
589 | } | |
590 | ip->i_d.di_uid = uid; | |
591 | inode->i_uid = uid; | |
592 | } | |
593 | if (igid != gid) { | |
594 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_GQUOTA_ON(mp)) { | |
595 | ASSERT(!XFS_IS_PQUOTA_ON(mp)); | |
596 | ASSERT(mask & ATTR_GID); | |
597 | ASSERT(gdqp); | |
598 | olddquot2 = xfs_qm_vop_chown(tp, ip, | |
599 | &ip->i_gdquot, gdqp); | |
600 | } | |
601 | ip->i_d.di_gid = gid; | |
602 | inode->i_gid = gid; | |
603 | } | |
604 | } | |
605 | ||
606 | /* | |
607 | * Change file access modes. | |
608 | */ | |
609 | if (mask & ATTR_MODE) { | |
610 | umode_t mode = iattr->ia_mode; | |
611 | ||
612 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) | |
613 | mode &= ~S_ISGID; | |
614 | ||
615 | ip->i_d.di_mode &= S_IFMT; | |
616 | ip->i_d.di_mode |= mode & ~S_IFMT; | |
617 | ||
618 | inode->i_mode &= S_IFMT; | |
619 | inode->i_mode |= mode & ~S_IFMT; | |
620 | } | |
621 | ||
622 | /* | |
623 | * Change file access or modified times. | |
624 | */ | |
625 | if (mask & ATTR_ATIME) { | |
626 | inode->i_atime = iattr->ia_atime; | |
627 | ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec; | |
628 | ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec; | |
c4ed4243 CH |
629 | } |
630 | if (mask & ATTR_CTIME) { | |
631 | inode->i_ctime = iattr->ia_ctime; | |
632 | ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; | |
633 | ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec; | |
c4ed4243 CH |
634 | } |
635 | if (mask & ATTR_MTIME) { | |
636 | inode->i_mtime = iattr->ia_mtime; | |
637 | ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec; | |
638 | ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec; | |
c4ed4243 CH |
639 | } |
640 | ||
641 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
642 | ||
643 | XFS_STATS_INC(xs_ig_attrchg); | |
644 | ||
645 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
646 | xfs_trans_set_sync(tp); | |
647 | error = xfs_trans_commit(tp, 0); | |
648 | ||
649 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
650 | ||
651 | /* | |
652 | * Release any dquot(s) the inode had kept before chown. | |
653 | */ | |
654 | xfs_qm_dqrele(olddquot1); | |
655 | xfs_qm_dqrele(olddquot2); | |
656 | xfs_qm_dqrele(udqp); | |
657 | xfs_qm_dqrele(gdqp); | |
658 | ||
659 | if (error) | |
660 | return XFS_ERROR(error); | |
661 | ||
662 | /* | |
663 | * XXX(hch): Updating the ACL entries is not atomic vs the i_mode | |
664 | * update. We could avoid this with linked transactions | |
665 | * and passing down the transaction pointer all the way | |
666 | * to attr_set. No previous user of the generic | |
667 | * Posix ACL code seems to care about this issue either. | |
668 | */ | |
669 | if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) { | |
670 | error = -xfs_acl_chmod(inode); | |
671 | if (error) | |
672 | return XFS_ERROR(error); | |
673 | } | |
674 | ||
675 | return 0; | |
676 | ||
677 | out_trans_cancel: | |
678 | xfs_trans_cancel(tp, 0); | |
679 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
680 | out_dqrele: | |
681 | xfs_qm_dqrele(udqp); | |
682 | xfs_qm_dqrele(gdqp); | |
683 | return error; | |
684 | } | |
685 | ||
686 | /* | |
687 | * Truncate file. Must have write permission and not be a directory. | |
688 | */ | |
689 | int | |
690 | xfs_setattr_size( | |
691 | struct xfs_inode *ip, | |
692 | struct iattr *iattr, | |
693 | int flags) | |
694 | { | |
695 | struct xfs_mount *mp = ip->i_mount; | |
696 | struct inode *inode = VFS_I(ip); | |
697 | int mask = iattr->ia_valid; | |
673e8e59 | 698 | xfs_off_t oldsize, newsize; |
c4ed4243 CH |
699 | struct xfs_trans *tp; |
700 | int error; | |
f38996f5 | 701 | uint lock_flags = 0; |
c4ed4243 CH |
702 | uint commit_flags = 0; |
703 | ||
704 | trace_xfs_setattr(ip); | |
705 | ||
706 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
707 | return XFS_ERROR(EROFS); | |
708 | ||
709 | if (XFS_FORCED_SHUTDOWN(mp)) | |
710 | return XFS_ERROR(EIO); | |
711 | ||
712 | error = -inode_change_ok(inode, iattr); | |
713 | if (error) | |
714 | return XFS_ERROR(error); | |
715 | ||
716 | ASSERT(S_ISREG(ip->i_d.di_mode)); | |
717 | ASSERT((mask & (ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET| | |
718 | ATTR_MTIME_SET|ATTR_KILL_SUID|ATTR_KILL_SGID| | |
719 | ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0); | |
720 | ||
f38996f5 | 721 | if (!(flags & XFS_ATTR_NOLOCK)) { |
c4ed4243 | 722 | lock_flags |= XFS_IOLOCK_EXCL; |
f38996f5 CH |
723 | xfs_ilock(ip, lock_flags); |
724 | } | |
c4ed4243 | 725 | |
ce7ae151 | 726 | oldsize = inode->i_size; |
673e8e59 CH |
727 | newsize = iattr->ia_size; |
728 | ||
c4ed4243 CH |
729 | /* |
730 | * Short circuit the truncate case for zero length files. | |
731 | */ | |
673e8e59 | 732 | if (newsize == 0 && oldsize == 0 && ip->i_d.di_nextents == 0) { |
681b1200 CH |
733 | if (!(mask & (ATTR_CTIME|ATTR_MTIME))) |
734 | goto out_unlock; | |
735 | ||
736 | /* | |
737 | * Use the regular setattr path to update the timestamps. | |
738 | */ | |
739 | xfs_iunlock(ip, lock_flags); | |
740 | iattr->ia_valid &= ~ATTR_SIZE; | |
741 | return xfs_setattr_nonsize(ip, iattr, 0); | |
c4ed4243 CH |
742 | } |
743 | ||
744 | /* | |
745 | * Make sure that the dquots are attached to the inode. | |
746 | */ | |
f38996f5 | 747 | error = xfs_qm_dqattach(ip, 0); |
c4ed4243 CH |
748 | if (error) |
749 | goto out_unlock; | |
750 | ||
751 | /* | |
752 | * Now we can make the changes. Before we join the inode to the | |
753 | * transaction, take care of the part of the truncation that must be | |
754 | * done without the inode lock. This needs to be done before joining | |
755 | * the inode to the transaction, because the inode cannot be unlocked | |
756 | * once it is a part of the transaction. | |
757 | */ | |
673e8e59 | 758 | if (newsize > oldsize) { |
c4ed4243 CH |
759 | /* |
760 | * Do the first part of growing a file: zero any data in the | |
761 | * last block that is beyond the old EOF. We need to do this | |
762 | * before the inode is joined to the transaction to modify | |
763 | * i_size. | |
764 | */ | |
673e8e59 | 765 | error = xfs_zero_eof(ip, newsize, oldsize); |
c4ed4243 CH |
766 | if (error) |
767 | goto out_unlock; | |
768 | } | |
c4ed4243 CH |
769 | |
770 | /* | |
771 | * We are going to log the inode size change in this transaction so | |
772 | * any previous writes that are beyond the on disk EOF and the new | |
773 | * EOF that have not been written out need to be written here. If we | |
774 | * do not write the data out, we expose ourselves to the null files | |
775 | * problem. | |
776 | * | |
777 | * Only flush from the on disk size to the smaller of the in memory | |
778 | * file size or the new size as that's the range we really care about | |
779 | * here and prevents waiting for other data not within the range we | |
780 | * care about here. | |
781 | */ | |
673e8e59 CH |
782 | if (oldsize != ip->i_d.di_size && newsize > ip->i_d.di_size) { |
783 | error = xfs_flush_pages(ip, ip->i_d.di_size, newsize, 0, | |
2b3ffd7e | 784 | FI_NONE); |
c4ed4243 CH |
785 | if (error) |
786 | goto out_unlock; | |
787 | } | |
788 | ||
789 | /* | |
4a06fd26 | 790 | * Wait for all direct I/O to complete. |
c4ed4243 | 791 | */ |
4a06fd26 | 792 | inode_dio_wait(inode); |
c4ed4243 | 793 | |
673e8e59 | 794 | error = -block_truncate_page(inode->i_mapping, newsize, xfs_get_blocks); |
c4ed4243 CH |
795 | if (error) |
796 | goto out_unlock; | |
797 | ||
798 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_SIZE); | |
799 | error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0, | |
800 | XFS_TRANS_PERM_LOG_RES, | |
801 | XFS_ITRUNCATE_LOG_COUNT); | |
802 | if (error) | |
803 | goto out_trans_cancel; | |
804 | ||
673e8e59 | 805 | truncate_setsize(inode, newsize); |
c4ed4243 CH |
806 | |
807 | commit_flags = XFS_TRANS_RELEASE_LOG_RES; | |
808 | lock_flags |= XFS_ILOCK_EXCL; | |
809 | ||
810 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
811 | ||
ddc3415a | 812 | xfs_trans_ijoin(tp, ip, 0); |
c4ed4243 CH |
813 | |
814 | /* | |
815 | * Only change the c/mtime if we are changing the size or we are | |
816 | * explicitly asked to change it. This handles the semantic difference | |
817 | * between truncate() and ftruncate() as implemented in the VFS. | |
818 | * | |
819 | * The regular truncate() case without ATTR_CTIME and ATTR_MTIME is a | |
820 | * special case where we need to update the times despite not having | |
821 | * these flags set. For all other operations the VFS set these flags | |
822 | * explicitly if it wants a timestamp update. | |
823 | */ | |
673e8e59 | 824 | if (newsize != oldsize && (!(mask & (ATTR_CTIME | ATTR_MTIME)))) { |
c4ed4243 CH |
825 | iattr->ia_ctime = iattr->ia_mtime = |
826 | current_fs_time(inode->i_sb); | |
827 | mask |= ATTR_CTIME | ATTR_MTIME; | |
828 | } | |
829 | ||
673e8e59 CH |
830 | /* |
831 | * The first thing we do is set the size to new_size permanently on | |
832 | * disk. This way we don't have to worry about anyone ever being able | |
833 | * to look at the data being freed even in the face of a crash. | |
834 | * What we're getting around here is the case where we free a block, it | |
835 | * is allocated to another file, it is written to, and then we crash. | |
836 | * If the new data gets written to the file but the log buffers | |
837 | * containing the free and reallocation don't, then we'd end up with | |
838 | * garbage in the blocks being freed. As long as we make the new size | |
839 | * permanent before actually freeing any blocks it doesn't matter if | |
840 | * they get written to. | |
841 | */ | |
842 | ip->i_d.di_size = newsize; | |
673e8e59 CH |
843 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
844 | ||
845 | if (newsize <= oldsize) { | |
846 | error = xfs_itruncate_extents(&tp, ip, XFS_DATA_FORK, newsize); | |
c4ed4243 CH |
847 | if (error) |
848 | goto out_trans_abort; | |
849 | ||
850 | /* | |
851 | * Truncated "down", so we're removing references to old data | |
852 | * here - if we delay flushing for a long time, we expose | |
853 | * ourselves unduly to the notorious NULL files problem. So, | |
854 | * we mark this inode and flush it when the file is closed, | |
855 | * and do not wait the usual (long) time for writeout. | |
856 | */ | |
857 | xfs_iflags_set(ip, XFS_ITRUNCATED); | |
27b52867 BF |
858 | |
859 | /* A truncate down always removes post-EOF blocks. */ | |
860 | xfs_inode_clear_eofblocks_tag(ip); | |
c4ed4243 CH |
861 | } |
862 | ||
863 | if (mask & ATTR_CTIME) { | |
864 | inode->i_ctime = iattr->ia_ctime; | |
865 | ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec; | |
866 | ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec; | |
c4ed4243 CH |
867 | } |
868 | if (mask & ATTR_MTIME) { | |
869 | inode->i_mtime = iattr->ia_mtime; | |
870 | ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec; | |
871 | ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec; | |
c4ed4243 CH |
872 | } |
873 | ||
874 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
875 | ||
876 | XFS_STATS_INC(xs_ig_attrchg); | |
877 | ||
878 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
879 | xfs_trans_set_sync(tp); | |
880 | ||
881 | error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); | |
882 | out_unlock: | |
883 | if (lock_flags) | |
884 | xfs_iunlock(ip, lock_flags); | |
885 | return error; | |
886 | ||
887 | out_trans_abort: | |
888 | commit_flags |= XFS_TRANS_ABORT; | |
889 | out_trans_cancel: | |
890 | xfs_trans_cancel(tp, commit_flags); | |
891 | goto out_unlock; | |
892 | } | |
893 | ||
1da177e4 | 894 | STATIC int |
416c6d5b | 895 | xfs_vn_setattr( |
1da177e4 | 896 | struct dentry *dentry, |
0f285c8a | 897 | struct iattr *iattr) |
1da177e4 | 898 | { |
c4ed4243 CH |
899 | if (iattr->ia_valid & ATTR_SIZE) |
900 | return -xfs_setattr_size(XFS_I(dentry->d_inode), iattr, 0); | |
901 | return -xfs_setattr_nonsize(XFS_I(dentry->d_inode), iattr, 0); | |
1da177e4 LT |
902 | } |
903 | ||
69ff2826 CH |
904 | STATIC int |
905 | xfs_vn_update_time( | |
906 | struct inode *inode, | |
907 | struct timespec *now, | |
908 | int flags) | |
909 | { | |
910 | struct xfs_inode *ip = XFS_I(inode); | |
911 | struct xfs_mount *mp = ip->i_mount; | |
912 | struct xfs_trans *tp; | |
913 | int error; | |
914 | ||
915 | trace_xfs_update_time(ip); | |
916 | ||
917 | tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); | |
918 | error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0); | |
919 | if (error) { | |
920 | xfs_trans_cancel(tp, 0); | |
921 | return -error; | |
922 | } | |
923 | ||
924 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
925 | if (flags & S_CTIME) { | |
926 | inode->i_ctime = *now; | |
927 | ip->i_d.di_ctime.t_sec = (__int32_t)now->tv_sec; | |
928 | ip->i_d.di_ctime.t_nsec = (__int32_t)now->tv_nsec; | |
929 | } | |
930 | if (flags & S_MTIME) { | |
931 | inode->i_mtime = *now; | |
932 | ip->i_d.di_mtime.t_sec = (__int32_t)now->tv_sec; | |
933 | ip->i_d.di_mtime.t_nsec = (__int32_t)now->tv_nsec; | |
934 | } | |
935 | if (flags & S_ATIME) { | |
936 | inode->i_atime = *now; | |
937 | ip->i_d.di_atime.t_sec = (__int32_t)now->tv_sec; | |
938 | ip->i_d.di_atime.t_nsec = (__int32_t)now->tv_nsec; | |
939 | } | |
940 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
941 | xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP); | |
942 | return -xfs_trans_commit(tp, 0); | |
943 | } | |
944 | ||
f35642e2 ES |
945 | #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) |
946 | ||
947 | /* | |
948 | * Call fiemap helper to fill in user data. | |
949 | * Returns positive errors to xfs_getbmap. | |
950 | */ | |
951 | STATIC int | |
952 | xfs_fiemap_format( | |
953 | void **arg, | |
954 | struct getbmapx *bmv, | |
955 | int *full) | |
956 | { | |
957 | int error; | |
958 | struct fiemap_extent_info *fieinfo = *arg; | |
959 | u32 fiemap_flags = 0; | |
960 | u64 logical, physical, length; | |
961 | ||
962 | /* Do nothing for a hole */ | |
963 | if (bmv->bmv_block == -1LL) | |
964 | return 0; | |
965 | ||
966 | logical = BBTOB(bmv->bmv_offset); | |
967 | physical = BBTOB(bmv->bmv_block); | |
968 | length = BBTOB(bmv->bmv_length); | |
969 | ||
970 | if (bmv->bmv_oflags & BMV_OF_PREALLOC) | |
971 | fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN; | |
972 | else if (bmv->bmv_oflags & BMV_OF_DELALLOC) { | |
973 | fiemap_flags |= FIEMAP_EXTENT_DELALLOC; | |
974 | physical = 0; /* no block yet */ | |
975 | } | |
976 | if (bmv->bmv_oflags & BMV_OF_LAST) | |
977 | fiemap_flags |= FIEMAP_EXTENT_LAST; | |
978 | ||
979 | error = fiemap_fill_next_extent(fieinfo, logical, physical, | |
980 | length, fiemap_flags); | |
981 | if (error > 0) { | |
982 | error = 0; | |
983 | *full = 1; /* user array now full */ | |
984 | } | |
985 | ||
986 | return -error; | |
987 | } | |
988 | ||
989 | STATIC int | |
990 | xfs_vn_fiemap( | |
991 | struct inode *inode, | |
992 | struct fiemap_extent_info *fieinfo, | |
993 | u64 start, | |
994 | u64 length) | |
995 | { | |
996 | xfs_inode_t *ip = XFS_I(inode); | |
997 | struct getbmapx bm; | |
998 | int error; | |
999 | ||
1000 | error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS); | |
1001 | if (error) | |
1002 | return error; | |
1003 | ||
1004 | /* Set up bmap header for xfs internal routine */ | |
1005 | bm.bmv_offset = BTOBB(start); | |
1006 | /* Special case for whole file */ | |
1007 | if (length == FIEMAP_MAX_OFFSET) | |
1008 | bm.bmv_length = -1LL; | |
1009 | else | |
1010 | bm.bmv_length = BTOBB(length); | |
1011 | ||
97db39a1 | 1012 | /* We add one because in getbmap world count includes the header */ |
2d1ff3c7 TM |
1013 | bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM : |
1014 | fieinfo->fi_extents_max + 1; | |
1015 | bm.bmv_count = min_t(__s32, bm.bmv_count, | |
1016 | (PAGE_SIZE * 16 / sizeof(struct getbmapx))); | |
9af25465 | 1017 | bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES; |
f35642e2 ES |
1018 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) |
1019 | bm.bmv_iflags |= BMV_IF_ATTRFORK; | |
1020 | if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) | |
1021 | bm.bmv_iflags |= BMV_IF_DELALLOC; | |
1022 | ||
1023 | error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo); | |
1024 | if (error) | |
1025 | return -error; | |
1026 | ||
1027 | return 0; | |
1028 | } | |
1029 | ||
41be8bed | 1030 | static const struct inode_operations xfs_inode_operations = { |
4e34e719 | 1031 | .get_acl = xfs_get_acl, |
416c6d5b NS |
1032 | .getattr = xfs_vn_getattr, |
1033 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1034 | .setxattr = generic_setxattr, |
1035 | .getxattr = generic_getxattr, | |
1036 | .removexattr = generic_removexattr, | |
416c6d5b | 1037 | .listxattr = xfs_vn_listxattr, |
f35642e2 | 1038 | .fiemap = xfs_vn_fiemap, |
69ff2826 | 1039 | .update_time = xfs_vn_update_time, |
1da177e4 LT |
1040 | }; |
1041 | ||
41be8bed | 1042 | static const struct inode_operations xfs_dir_inode_operations = { |
416c6d5b NS |
1043 | .create = xfs_vn_create, |
1044 | .lookup = xfs_vn_lookup, | |
1045 | .link = xfs_vn_link, | |
1046 | .unlink = xfs_vn_unlink, | |
1047 | .symlink = xfs_vn_symlink, | |
1048 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
1049 | /* |
1050 | * Yes, XFS uses the same method for rmdir and unlink. | |
1051 | * | |
1052 | * There are some subtile differences deeper in the code, | |
1053 | * but we use S_ISDIR to check for those. | |
1054 | */ | |
1055 | .rmdir = xfs_vn_unlink, | |
416c6d5b NS |
1056 | .mknod = xfs_vn_mknod, |
1057 | .rename = xfs_vn_rename, | |
4e34e719 | 1058 | .get_acl = xfs_get_acl, |
416c6d5b NS |
1059 | .getattr = xfs_vn_getattr, |
1060 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1061 | .setxattr = generic_setxattr, |
1062 | .getxattr = generic_getxattr, | |
1063 | .removexattr = generic_removexattr, | |
416c6d5b | 1064 | .listxattr = xfs_vn_listxattr, |
69ff2826 | 1065 | .update_time = xfs_vn_update_time, |
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, |
69ff2826 | 1091 | .update_time = xfs_vn_update_time, |
384f3ced BN |
1092 | }; |
1093 | ||
41be8bed | 1094 | static const struct inode_operations xfs_symlink_inode_operations = { |
1da177e4 | 1095 | .readlink = generic_readlink, |
416c6d5b NS |
1096 | .follow_link = xfs_vn_follow_link, |
1097 | .put_link = xfs_vn_put_link, | |
4e34e719 | 1098 | .get_acl = xfs_get_acl, |
416c6d5b NS |
1099 | .getattr = xfs_vn_getattr, |
1100 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
1101 | .setxattr = generic_setxattr, |
1102 | .getxattr = generic_getxattr, | |
1103 | .removexattr = generic_removexattr, | |
416c6d5b | 1104 | .listxattr = xfs_vn_listxattr, |
69ff2826 | 1105 | .update_time = xfs_vn_update_time, |
1da177e4 | 1106 | }; |
41be8bed CH |
1107 | |
1108 | STATIC void | |
1109 | xfs_diflags_to_iflags( | |
1110 | struct inode *inode, | |
1111 | struct xfs_inode *ip) | |
1112 | { | |
1113 | if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) | |
1114 | inode->i_flags |= S_IMMUTABLE; | |
1115 | else | |
1116 | inode->i_flags &= ~S_IMMUTABLE; | |
1117 | if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) | |
1118 | inode->i_flags |= S_APPEND; | |
1119 | else | |
1120 | inode->i_flags &= ~S_APPEND; | |
1121 | if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) | |
1122 | inode->i_flags |= S_SYNC; | |
1123 | else | |
1124 | inode->i_flags &= ~S_SYNC; | |
1125 | if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) | |
1126 | inode->i_flags |= S_NOATIME; | |
1127 | else | |
1128 | inode->i_flags &= ~S_NOATIME; | |
1129 | } | |
1130 | ||
1131 | /* | |
1132 | * Initialize the Linux inode, set up the operation vectors and | |
1133 | * unlock the inode. | |
1134 | * | |
1135 | * When reading existing inodes from disk this is called directly | |
1136 | * from xfs_iget, when creating a new inode it is called from | |
1137 | * xfs_ialloc after setting up the inode. | |
bf904248 DC |
1138 | * |
1139 | * We are always called with an uninitialised linux inode here. | |
1140 | * We need to initialise the necessary fields and take a reference | |
1141 | * on it. | |
41be8bed CH |
1142 | */ |
1143 | void | |
1144 | xfs_setup_inode( | |
1145 | struct xfs_inode *ip) | |
1146 | { | |
bf904248 DC |
1147 | struct inode *inode = &ip->i_vnode; |
1148 | ||
1149 | inode->i_ino = ip->i_ino; | |
eaff8079 | 1150 | inode->i_state = I_NEW; |
646ec461 CH |
1151 | |
1152 | inode_sb_list_add(inode); | |
c6f6cd06 CH |
1153 | /* make the inode look hashed for the writeback code */ |
1154 | hlist_add_fake(&inode->i_hash); | |
41be8bed CH |
1155 | |
1156 | inode->i_mode = ip->i_d.di_mode; | |
bfe86848 | 1157 | set_nlink(inode, ip->i_d.di_nlink); |
41be8bed CH |
1158 | inode->i_uid = ip->i_d.di_uid; |
1159 | inode->i_gid = ip->i_d.di_gid; | |
1160 | ||
1161 | switch (inode->i_mode & S_IFMT) { | |
1162 | case S_IFBLK: | |
1163 | case S_IFCHR: | |
1164 | inode->i_rdev = | |
1165 | MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
1166 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
1167 | break; | |
1168 | default: | |
1169 | inode->i_rdev = 0; | |
1170 | break; | |
1171 | } | |
1172 | ||
1173 | inode->i_generation = ip->i_d.di_gen; | |
1174 | i_size_write(inode, ip->i_d.di_size); | |
1175 | inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; | |
1176 | inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; | |
1177 | inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; | |
1178 | inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; | |
1179 | inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; | |
1180 | inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; | |
1181 | xfs_diflags_to_iflags(inode, ip); | |
41be8bed CH |
1182 | |
1183 | switch (inode->i_mode & S_IFMT) { | |
1184 | case S_IFREG: | |
1185 | inode->i_op = &xfs_inode_operations; | |
1186 | inode->i_fop = &xfs_file_operations; | |
1187 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
1188 | break; | |
1189 | case S_IFDIR: | |
1190 | if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb)) | |
1191 | inode->i_op = &xfs_dir_ci_inode_operations; | |
1192 | else | |
1193 | inode->i_op = &xfs_dir_inode_operations; | |
1194 | inode->i_fop = &xfs_dir_file_operations; | |
1195 | break; | |
1196 | case S_IFLNK: | |
1197 | inode->i_op = &xfs_symlink_inode_operations; | |
1198 | if (!(ip->i_df.if_flags & XFS_IFINLINE)) | |
1199 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
1200 | break; | |
1201 | default: | |
1202 | inode->i_op = &xfs_inode_operations; | |
1203 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
1204 | break; | |
1205 | } | |
1206 | ||
510792ee CH |
1207 | /* |
1208 | * If there is no attribute fork no ACL can exist on this inode, | |
1209 | * and it can't have any file capabilities attached to it either. | |
1210 | */ | |
1211 | if (!XFS_IFORK_Q(ip)) { | |
1212 | inode_has_no_xattr(inode); | |
6311b108 | 1213 | cache_no_acl(inode); |
510792ee | 1214 | } |
6311b108 | 1215 | |
41be8bed CH |
1216 | xfs_iflags_clear(ip, XFS_INEW); |
1217 | barrier(); | |
1218 | ||
1219 | unlock_new_inode(inode); | |
1220 | } |