Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 LT |
18 | #include "xfs.h" |
19 | #include "xfs_fs.h" | |
ef14f0c1 | 20 | #include "xfs_acl.h" |
a844f451 | 21 | #include "xfs_bit.h" |
1da177e4 | 22 | #include "xfs_log.h" |
a844f451 | 23 | #include "xfs_inum.h" |
1da177e4 LT |
24 | #include "xfs_trans.h" |
25 | #include "xfs_sb.h" | |
26 | #include "xfs_ag.h" | |
1da177e4 | 27 | #include "xfs_alloc.h" |
1da177e4 LT |
28 | #include "xfs_quota.h" |
29 | #include "xfs_mount.h" | |
1da177e4 | 30 | #include "xfs_bmap_btree.h" |
1da177e4 LT |
31 | #include "xfs_dinode.h" |
32 | #include "xfs_inode.h" | |
33 | #include "xfs_bmap.h" | |
1da177e4 LT |
34 | #include "xfs_rtalloc.h" |
35 | #include "xfs_error.h" | |
36 | #include "xfs_itable.h" | |
37 | #include "xfs_rw.h" | |
1da177e4 LT |
38 | #include "xfs_attr.h" |
39 | #include "xfs_buf_item.h" | |
40 | #include "xfs_utils.h" | |
739bfb2a | 41 | #include "xfs_vnodeops.h" |
0b1b213f | 42 | #include "xfs_trace.h" |
1da177e4 | 43 | |
16f7e0fe | 44 | #include <linux/capability.h> |
1da177e4 LT |
45 | #include <linux/xattr.h> |
46 | #include <linux/namei.h> | |
ef14f0c1 | 47 | #include <linux/posix_acl.h> |
446ada4a | 48 | #include <linux/security.h> |
f35642e2 | 49 | #include <linux/fiemap.h> |
5a0e3ad6 | 50 | #include <linux/slab.h> |
1da177e4 | 51 | |
42fe2b1f | 52 | /* |
f9581b14 CH |
53 | * Bring the timestamps in the XFS inode uptodate. |
54 | * | |
55 | * Used before writing the inode to disk. | |
42fe2b1f CH |
56 | */ |
57 | void | |
f9581b14 | 58 | xfs_synchronize_times( |
42fe2b1f CH |
59 | xfs_inode_t *ip) |
60 | { | |
01651646 | 61 | struct inode *inode = VFS_I(ip); |
42fe2b1f | 62 | |
f9581b14 CH |
63 | ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec; |
64 | ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec; | |
65 | ip->i_d.di_ctime.t_sec = (__int32_t)inode->i_ctime.tv_sec; | |
66 | ip->i_d.di_ctime.t_nsec = (__int32_t)inode->i_ctime.tv_nsec; | |
67 | ip->i_d.di_mtime.t_sec = (__int32_t)inode->i_mtime.tv_sec; | |
68 | ip->i_d.di_mtime.t_nsec = (__int32_t)inode->i_mtime.tv_nsec; | |
42fe2b1f CH |
69 | } |
70 | ||
5d51eff4 | 71 | /* |
bf904248 | 72 | * If the linux inode is valid, mark it dirty. |
5d51eff4 DC |
73 | * Used when commiting a dirty inode into a transaction so that |
74 | * the inode will get written back by the linux code | |
75 | */ | |
76 | void | |
77 | xfs_mark_inode_dirty_sync( | |
78 | xfs_inode_t *ip) | |
79 | { | |
01651646 | 80 | struct inode *inode = VFS_I(ip); |
5d51eff4 | 81 | |
a4ffdde6 | 82 | if (!(inode->i_state & (I_WILL_FREE|I_FREEING))) |
af048193 | 83 | mark_inode_dirty_sync(inode); |
5d51eff4 DC |
84 | } |
85 | ||
66d834ea CH |
86 | void |
87 | xfs_mark_inode_dirty( | |
88 | xfs_inode_t *ip) | |
89 | { | |
90 | struct inode *inode = VFS_I(ip); | |
91 | ||
a4ffdde6 | 92 | if (!(inode->i_state & (I_WILL_FREE|I_FREEING))) |
66d834ea CH |
93 | mark_inode_dirty(inode); |
94 | } | |
95 | ||
446ada4a NS |
96 | /* |
97 | * Hook in SELinux. This is not quite correct yet, what we really need | |
98 | * here (as we do for default ACLs) is a mechanism by which creation of | |
99 | * these attrs can be journalled at inode creation time (along with the | |
100 | * inode, of course, such that log replay can't cause these to be lost). | |
101 | */ | |
102 | STATIC int | |
416c6d5b | 103 | xfs_init_security( |
af048193 | 104 | struct inode *inode, |
446ada4a NS |
105 | struct inode *dir) |
106 | { | |
af048193 | 107 | struct xfs_inode *ip = XFS_I(inode); |
446ada4a NS |
108 | size_t length; |
109 | void *value; | |
a9273ca5 | 110 | unsigned char *name; |
446ada4a NS |
111 | int error; |
112 | ||
a9273ca5 | 113 | error = security_inode_init_security(inode, dir, (char **)&name, |
af048193 | 114 | &value, &length); |
446ada4a NS |
115 | if (error) { |
116 | if (error == -EOPNOTSUPP) | |
117 | return 0; | |
118 | return -error; | |
119 | } | |
120 | ||
af048193 | 121 | error = xfs_attr_set(ip, name, value, length, ATTR_SECURE); |
446ada4a NS |
122 | |
123 | kfree(name); | |
124 | kfree(value); | |
125 | return error; | |
126 | } | |
127 | ||
556b8b16 BN |
128 | static void |
129 | xfs_dentry_to_name( | |
130 | struct xfs_name *namep, | |
131 | struct dentry *dentry) | |
132 | { | |
133 | namep->name = dentry->d_name.name; | |
134 | namep->len = dentry->d_name.len; | |
135 | } | |
136 | ||
7989cb8e | 137 | STATIC void |
416c6d5b | 138 | xfs_cleanup_inode( |
739bfb2a | 139 | struct inode *dir, |
af048193 | 140 | struct inode *inode, |
8f112e3b | 141 | struct dentry *dentry) |
3a69c7dc | 142 | { |
556b8b16 | 143 | struct xfs_name teardown; |
3a69c7dc YL |
144 | |
145 | /* Oh, the horror. | |
220b5284 | 146 | * If we can't add the ACL or we fail in |
416c6d5b | 147 | * xfs_init_security we must back out. |
3a69c7dc YL |
148 | * ENOSPC can hit here, among other things. |
149 | */ | |
556b8b16 | 150 | xfs_dentry_to_name(&teardown, dentry); |
3a69c7dc | 151 | |
8f112e3b | 152 | xfs_remove(XFS_I(dir), &teardown, XFS_I(inode)); |
af048193 | 153 | iput(inode); |
3a69c7dc YL |
154 | } |
155 | ||
1da177e4 | 156 | STATIC int |
416c6d5b | 157 | xfs_vn_mknod( |
1da177e4 LT |
158 | struct inode *dir, |
159 | struct dentry *dentry, | |
160 | int mode, | |
161 | dev_t rdev) | |
162 | { | |
db0bb7ba | 163 | struct inode *inode; |
979ebab1 | 164 | struct xfs_inode *ip = NULL; |
ef14f0c1 | 165 | struct posix_acl *default_acl = NULL; |
556b8b16 | 166 | struct xfs_name name; |
1da177e4 LT |
167 | int error; |
168 | ||
169 | /* | |
170 | * Irix uses Missed'em'V split, but doesn't want to see | |
171 | * the upper 5 bits of (14bit) major. | |
172 | */ | |
517b5e8c CH |
173 | if (S_ISCHR(mode) || S_ISBLK(mode)) { |
174 | if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) | |
175 | return -EINVAL; | |
176 | rdev = sysv_encode_dev(rdev); | |
177 | } else { | |
178 | rdev = 0; | |
179 | } | |
1da177e4 | 180 | |
ef14f0c1 CH |
181 | if (IS_POSIXACL(dir)) { |
182 | default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT); | |
183 | if (IS_ERR(default_acl)) | |
184 | return -PTR_ERR(default_acl); | |
1da177e4 | 185 | |
e83f1eb6 CH |
186 | if (!default_acl) |
187 | mode &= ~current_umask(); | |
ef14f0c1 | 188 | } |
1da177e4 | 189 | |
517b5e8c | 190 | xfs_dentry_to_name(&name, dentry); |
6c77b0ea | 191 | error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip); |
db0bb7ba CH |
192 | if (unlikely(error)) |
193 | goto out_free_acl; | |
446ada4a | 194 | |
01651646 | 195 | inode = VFS_I(ip); |
979ebab1 CH |
196 | |
197 | error = xfs_init_security(inode, dir); | |
db0bb7ba CH |
198 | if (unlikely(error)) |
199 | goto out_cleanup_inode; | |
200 | ||
201 | if (default_acl) { | |
ef14f0c1 | 202 | error = -xfs_inherit_acl(inode, default_acl); |
db0bb7ba CH |
203 | if (unlikely(error)) |
204 | goto out_cleanup_inode; | |
ef14f0c1 | 205 | posix_acl_release(default_acl); |
1da177e4 LT |
206 | } |
207 | ||
1da177e4 | 208 | |
db0bb7ba | 209 | d_instantiate(dentry, inode); |
db0bb7ba CH |
210 | return -error; |
211 | ||
212 | out_cleanup_inode: | |
8f112e3b | 213 | xfs_cleanup_inode(dir, inode, dentry); |
db0bb7ba | 214 | out_free_acl: |
ef14f0c1 | 215 | posix_acl_release(default_acl); |
1da177e4 LT |
216 | return -error; |
217 | } | |
218 | ||
219 | STATIC int | |
416c6d5b | 220 | xfs_vn_create( |
1da177e4 LT |
221 | struct inode *dir, |
222 | struct dentry *dentry, | |
223 | int mode, | |
224 | struct nameidata *nd) | |
225 | { | |
416c6d5b | 226 | return xfs_vn_mknod(dir, dentry, mode, 0); |
1da177e4 LT |
227 | } |
228 | ||
229 | STATIC int | |
416c6d5b | 230 | xfs_vn_mkdir( |
1da177e4 LT |
231 | struct inode *dir, |
232 | struct dentry *dentry, | |
233 | int mode) | |
234 | { | |
416c6d5b | 235 | return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0); |
1da177e4 LT |
236 | } |
237 | ||
238 | STATIC struct dentry * | |
416c6d5b | 239 | xfs_vn_lookup( |
1da177e4 LT |
240 | struct inode *dir, |
241 | struct dentry *dentry, | |
242 | struct nameidata *nd) | |
243 | { | |
ef1f5e7a | 244 | struct xfs_inode *cip; |
556b8b16 | 245 | struct xfs_name name; |
1da177e4 LT |
246 | int error; |
247 | ||
248 | if (dentry->d_name.len >= MAXNAMELEN) | |
249 | return ERR_PTR(-ENAMETOOLONG); | |
250 | ||
556b8b16 | 251 | xfs_dentry_to_name(&name, dentry); |
384f3ced | 252 | error = xfs_lookup(XFS_I(dir), &name, &cip, NULL); |
67fcaa73 | 253 | if (unlikely(error)) { |
1da177e4 LT |
254 | if (unlikely(error != ENOENT)) |
255 | return ERR_PTR(-error); | |
256 | d_add(dentry, NULL); | |
257 | return NULL; | |
258 | } | |
259 | ||
01651646 | 260 | return d_splice_alias(VFS_I(cip), dentry); |
1da177e4 LT |
261 | } |
262 | ||
384f3ced BN |
263 | STATIC struct dentry * |
264 | xfs_vn_ci_lookup( | |
265 | struct inode *dir, | |
266 | struct dentry *dentry, | |
267 | struct nameidata *nd) | |
268 | { | |
269 | struct xfs_inode *ip; | |
270 | struct xfs_name xname; | |
271 | struct xfs_name ci_name; | |
272 | struct qstr dname; | |
273 | int error; | |
274 | ||
275 | if (dentry->d_name.len >= MAXNAMELEN) | |
276 | return ERR_PTR(-ENAMETOOLONG); | |
277 | ||
278 | xfs_dentry_to_name(&xname, dentry); | |
279 | error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name); | |
280 | if (unlikely(error)) { | |
281 | if (unlikely(error != ENOENT)) | |
282 | return ERR_PTR(-error); | |
866d5dc9 BN |
283 | /* |
284 | * call d_add(dentry, NULL) here when d_drop_negative_children | |
285 | * is called in xfs_vn_mknod (ie. allow negative dentries | |
286 | * with CI filesystems). | |
287 | */ | |
384f3ced BN |
288 | return NULL; |
289 | } | |
290 | ||
291 | /* if exact match, just splice and exit */ | |
292 | if (!ci_name.name) | |
01651646 | 293 | return d_splice_alias(VFS_I(ip), dentry); |
384f3ced BN |
294 | |
295 | /* else case-insensitive match... */ | |
296 | dname.name = ci_name.name; | |
297 | dname.len = ci_name.len; | |
e45b590b | 298 | dentry = d_add_ci(dentry, VFS_I(ip), &dname); |
384f3ced BN |
299 | kmem_free(ci_name.name); |
300 | return dentry; | |
301 | } | |
302 | ||
1da177e4 | 303 | STATIC int |
416c6d5b | 304 | xfs_vn_link( |
1da177e4 LT |
305 | struct dentry *old_dentry, |
306 | struct inode *dir, | |
307 | struct dentry *dentry) | |
308 | { | |
d9424b3c | 309 | struct inode *inode = old_dentry->d_inode; |
556b8b16 | 310 | struct xfs_name name; |
1da177e4 LT |
311 | int error; |
312 | ||
556b8b16 | 313 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 314 | |
556b8b16 | 315 | error = xfs_link(XFS_I(dir), XFS_I(inode), &name); |
d9424b3c | 316 | if (unlikely(error)) |
a3da7896 | 317 | return -error; |
a3da7896 | 318 | |
7de9c6ee | 319 | ihold(inode); |
a3da7896 CH |
320 | d_instantiate(dentry, inode); |
321 | return 0; | |
1da177e4 LT |
322 | } |
323 | ||
324 | STATIC int | |
416c6d5b | 325 | xfs_vn_unlink( |
1da177e4 LT |
326 | struct inode *dir, |
327 | struct dentry *dentry) | |
328 | { | |
556b8b16 | 329 | struct xfs_name name; |
1da177e4 LT |
330 | int error; |
331 | ||
556b8b16 | 332 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 333 | |
e5700704 CH |
334 | error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode)); |
335 | if (error) | |
336 | return error; | |
337 | ||
338 | /* | |
339 | * With unlink, the VFS makes the dentry "negative": no inode, | |
340 | * but still hashed. This is incompatible with case-insensitive | |
341 | * mode, so invalidate (unhash) the dentry in CI-mode. | |
342 | */ | |
343 | if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb)) | |
344 | d_invalidate(dentry); | |
345 | return 0; | |
1da177e4 LT |
346 | } |
347 | ||
348 | STATIC int | |
416c6d5b | 349 | xfs_vn_symlink( |
1da177e4 LT |
350 | struct inode *dir, |
351 | struct dentry *dentry, | |
352 | const char *symname) | |
353 | { | |
3937be5b CH |
354 | struct inode *inode; |
355 | struct xfs_inode *cip = NULL; | |
556b8b16 | 356 | struct xfs_name name; |
1da177e4 | 357 | int error; |
3e5daf05 | 358 | mode_t mode; |
1da177e4 | 359 | |
3e5daf05 | 360 | mode = S_IFLNK | |
ce3b0f8d | 361 | (irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO); |
556b8b16 | 362 | xfs_dentry_to_name(&name, dentry); |
1da177e4 | 363 | |
6c77b0ea | 364 | error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip); |
3937be5b CH |
365 | if (unlikely(error)) |
366 | goto out; | |
367 | ||
01651646 | 368 | inode = VFS_I(cip); |
3937be5b CH |
369 | |
370 | error = xfs_init_security(inode, dir); | |
371 | if (unlikely(error)) | |
372 | goto out_cleanup_inode; | |
373 | ||
374 | d_instantiate(dentry, inode); | |
3937be5b CH |
375 | return 0; |
376 | ||
377 | out_cleanup_inode: | |
8f112e3b | 378 | xfs_cleanup_inode(dir, inode, dentry); |
3937be5b | 379 | out: |
1da177e4 LT |
380 | return -error; |
381 | } | |
382 | ||
1da177e4 | 383 | STATIC int |
416c6d5b | 384 | xfs_vn_rename( |
1da177e4 LT |
385 | struct inode *odir, |
386 | struct dentry *odentry, | |
387 | struct inode *ndir, | |
388 | struct dentry *ndentry) | |
389 | { | |
390 | struct inode *new_inode = ndentry->d_inode; | |
556b8b16 BN |
391 | struct xfs_name oname; |
392 | struct xfs_name nname; | |
1da177e4 | 393 | |
556b8b16 BN |
394 | xfs_dentry_to_name(&oname, odentry); |
395 | xfs_dentry_to_name(&nname, ndentry); | |
396 | ||
e5700704 | 397 | return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode), |
cfa853e4 CH |
398 | XFS_I(ndir), &nname, new_inode ? |
399 | XFS_I(new_inode) : NULL); | |
1da177e4 LT |
400 | } |
401 | ||
402 | /* | |
403 | * careful here - this function can get called recursively, so | |
404 | * we need to be very careful about how much stack we use. | |
405 | * uio is kmalloced for this reason... | |
406 | */ | |
008b150a | 407 | STATIC void * |
416c6d5b | 408 | xfs_vn_follow_link( |
1da177e4 LT |
409 | struct dentry *dentry, |
410 | struct nameidata *nd) | |
411 | { | |
1da177e4 | 412 | char *link; |
804c83c3 | 413 | int error = -ENOMEM; |
1da177e4 | 414 | |
f52720ca | 415 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
804c83c3 CH |
416 | if (!link) |
417 | goto out_err; | |
1da177e4 | 418 | |
739bfb2a | 419 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
804c83c3 CH |
420 | if (unlikely(error)) |
421 | goto out_kfree; | |
1da177e4 LT |
422 | |
423 | nd_set_link(nd, link); | |
008b150a | 424 | return NULL; |
804c83c3 CH |
425 | |
426 | out_kfree: | |
427 | kfree(link); | |
428 | out_err: | |
429 | nd_set_link(nd, ERR_PTR(error)); | |
430 | return NULL; | |
1da177e4 LT |
431 | } |
432 | ||
cde410a9 | 433 | STATIC void |
416c6d5b | 434 | xfs_vn_put_link( |
cde410a9 NS |
435 | struct dentry *dentry, |
436 | struct nameidata *nd, | |
437 | void *p) | |
1da177e4 | 438 | { |
cde410a9 NS |
439 | char *s = nd_get_link(nd); |
440 | ||
1da177e4 LT |
441 | if (!IS_ERR(s)) |
442 | kfree(s); | |
443 | } | |
444 | ||
1da177e4 | 445 | STATIC int |
416c6d5b | 446 | xfs_vn_getattr( |
c43f4087 CH |
447 | struct vfsmount *mnt, |
448 | struct dentry *dentry, | |
449 | struct kstat *stat) | |
1da177e4 | 450 | { |
c43f4087 CH |
451 | struct inode *inode = dentry->d_inode; |
452 | struct xfs_inode *ip = XFS_I(inode); | |
453 | struct xfs_mount *mp = ip->i_mount; | |
454 | ||
cca28fb8 | 455 | trace_xfs_getattr(ip); |
c43f4087 CH |
456 | |
457 | if (XFS_FORCED_SHUTDOWN(mp)) | |
458 | return XFS_ERROR(EIO); | |
459 | ||
460 | stat->size = XFS_ISIZE(ip); | |
461 | stat->dev = inode->i_sb->s_dev; | |
462 | stat->mode = ip->i_d.di_mode; | |
463 | stat->nlink = ip->i_d.di_nlink; | |
464 | stat->uid = ip->i_d.di_uid; | |
465 | stat->gid = ip->i_d.di_gid; | |
466 | stat->ino = ip->i_ino; | |
c43f4087 | 467 | stat->atime = inode->i_atime; |
f9581b14 CH |
468 | stat->mtime = inode->i_mtime; |
469 | stat->ctime = inode->i_ctime; | |
c43f4087 CH |
470 | stat->blocks = |
471 | XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks); | |
472 | ||
473 | ||
474 | switch (inode->i_mode & S_IFMT) { | |
475 | case S_IFBLK: | |
476 | case S_IFCHR: | |
477 | stat->blksize = BLKDEV_IOSIZE; | |
478 | stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
479 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
480 | break; | |
481 | default: | |
71ddabb9 | 482 | if (XFS_IS_REALTIME_INODE(ip)) { |
c43f4087 CH |
483 | /* |
484 | * If the file blocks are being allocated from a | |
485 | * realtime volume, then return the inode's realtime | |
486 | * extent size or the realtime volume's extent size. | |
487 | */ | |
488 | stat->blksize = | |
489 | xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog; | |
490 | } else | |
491 | stat->blksize = xfs_preferred_iosize(mp); | |
492 | stat->rdev = 0; | |
493 | break; | |
69e23b9a | 494 | } |
c43f4087 CH |
495 | |
496 | return 0; | |
1da177e4 LT |
497 | } |
498 | ||
499 | STATIC int | |
416c6d5b | 500 | xfs_vn_setattr( |
1da177e4 | 501 | struct dentry *dentry, |
0f285c8a | 502 | struct iattr *iattr) |
1da177e4 | 503 | { |
ea5a3dc8 | 504 | return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0); |
1da177e4 LT |
505 | } |
506 | ||
f35642e2 ES |
507 | #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) |
508 | ||
509 | /* | |
510 | * Call fiemap helper to fill in user data. | |
511 | * Returns positive errors to xfs_getbmap. | |
512 | */ | |
513 | STATIC int | |
514 | xfs_fiemap_format( | |
515 | void **arg, | |
516 | struct getbmapx *bmv, | |
517 | int *full) | |
518 | { | |
519 | int error; | |
520 | struct fiemap_extent_info *fieinfo = *arg; | |
521 | u32 fiemap_flags = 0; | |
522 | u64 logical, physical, length; | |
523 | ||
524 | /* Do nothing for a hole */ | |
525 | if (bmv->bmv_block == -1LL) | |
526 | return 0; | |
527 | ||
528 | logical = BBTOB(bmv->bmv_offset); | |
529 | physical = BBTOB(bmv->bmv_block); | |
530 | length = BBTOB(bmv->bmv_length); | |
531 | ||
532 | if (bmv->bmv_oflags & BMV_OF_PREALLOC) | |
533 | fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN; | |
534 | else if (bmv->bmv_oflags & BMV_OF_DELALLOC) { | |
535 | fiemap_flags |= FIEMAP_EXTENT_DELALLOC; | |
536 | physical = 0; /* no block yet */ | |
537 | } | |
538 | if (bmv->bmv_oflags & BMV_OF_LAST) | |
539 | fiemap_flags |= FIEMAP_EXTENT_LAST; | |
540 | ||
541 | error = fiemap_fill_next_extent(fieinfo, logical, physical, | |
542 | length, fiemap_flags); | |
543 | if (error > 0) { | |
544 | error = 0; | |
545 | *full = 1; /* user array now full */ | |
546 | } | |
547 | ||
548 | return -error; | |
549 | } | |
550 | ||
551 | STATIC int | |
552 | xfs_vn_fiemap( | |
553 | struct inode *inode, | |
554 | struct fiemap_extent_info *fieinfo, | |
555 | u64 start, | |
556 | u64 length) | |
557 | { | |
558 | xfs_inode_t *ip = XFS_I(inode); | |
559 | struct getbmapx bm; | |
560 | int error; | |
561 | ||
562 | error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS); | |
563 | if (error) | |
564 | return error; | |
565 | ||
566 | /* Set up bmap header for xfs internal routine */ | |
567 | bm.bmv_offset = BTOBB(start); | |
568 | /* Special case for whole file */ | |
569 | if (length == FIEMAP_MAX_OFFSET) | |
570 | bm.bmv_length = -1LL; | |
571 | else | |
572 | bm.bmv_length = BTOBB(length); | |
573 | ||
97db39a1 | 574 | /* We add one because in getbmap world count includes the header */ |
2d1ff3c7 TM |
575 | bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM : |
576 | fieinfo->fi_extents_max + 1; | |
577 | bm.bmv_count = min_t(__s32, bm.bmv_count, | |
578 | (PAGE_SIZE * 16 / sizeof(struct getbmapx))); | |
9af25465 | 579 | bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES; |
f35642e2 ES |
580 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) |
581 | bm.bmv_iflags |= BMV_IF_ATTRFORK; | |
582 | if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) | |
583 | bm.bmv_iflags |= BMV_IF_DELALLOC; | |
584 | ||
585 | error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo); | |
586 | if (error) | |
587 | return -error; | |
588 | ||
589 | return 0; | |
590 | } | |
591 | ||
41be8bed | 592 | static const struct inode_operations xfs_inode_operations = { |
18f4c644 | 593 | .check_acl = xfs_check_acl, |
416c6d5b NS |
594 | .getattr = xfs_vn_getattr, |
595 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
596 | .setxattr = generic_setxattr, |
597 | .getxattr = generic_getxattr, | |
598 | .removexattr = generic_removexattr, | |
416c6d5b | 599 | .listxattr = xfs_vn_listxattr, |
f35642e2 | 600 | .fiemap = xfs_vn_fiemap, |
1da177e4 LT |
601 | }; |
602 | ||
41be8bed | 603 | static const struct inode_operations xfs_dir_inode_operations = { |
416c6d5b NS |
604 | .create = xfs_vn_create, |
605 | .lookup = xfs_vn_lookup, | |
606 | .link = xfs_vn_link, | |
607 | .unlink = xfs_vn_unlink, | |
608 | .symlink = xfs_vn_symlink, | |
609 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
610 | /* |
611 | * Yes, XFS uses the same method for rmdir and unlink. | |
612 | * | |
613 | * There are some subtile differences deeper in the code, | |
614 | * but we use S_ISDIR to check for those. | |
615 | */ | |
616 | .rmdir = xfs_vn_unlink, | |
416c6d5b NS |
617 | .mknod = xfs_vn_mknod, |
618 | .rename = xfs_vn_rename, | |
18f4c644 | 619 | .check_acl = xfs_check_acl, |
416c6d5b NS |
620 | .getattr = xfs_vn_getattr, |
621 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
622 | .setxattr = generic_setxattr, |
623 | .getxattr = generic_getxattr, | |
624 | .removexattr = generic_removexattr, | |
416c6d5b | 625 | .listxattr = xfs_vn_listxattr, |
1da177e4 LT |
626 | }; |
627 | ||
41be8bed | 628 | static const struct inode_operations xfs_dir_ci_inode_operations = { |
384f3ced BN |
629 | .create = xfs_vn_create, |
630 | .lookup = xfs_vn_ci_lookup, | |
631 | .link = xfs_vn_link, | |
632 | .unlink = xfs_vn_unlink, | |
633 | .symlink = xfs_vn_symlink, | |
634 | .mkdir = xfs_vn_mkdir, | |
8f112e3b CH |
635 | /* |
636 | * Yes, XFS uses the same method for rmdir and unlink. | |
637 | * | |
638 | * There are some subtile differences deeper in the code, | |
639 | * but we use S_ISDIR to check for those. | |
640 | */ | |
641 | .rmdir = xfs_vn_unlink, | |
384f3ced BN |
642 | .mknod = xfs_vn_mknod, |
643 | .rename = xfs_vn_rename, | |
18f4c644 | 644 | .check_acl = xfs_check_acl, |
384f3ced BN |
645 | .getattr = xfs_vn_getattr, |
646 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
647 | .setxattr = generic_setxattr, |
648 | .getxattr = generic_getxattr, | |
649 | .removexattr = generic_removexattr, | |
384f3ced | 650 | .listxattr = xfs_vn_listxattr, |
384f3ced BN |
651 | }; |
652 | ||
41be8bed | 653 | static const struct inode_operations xfs_symlink_inode_operations = { |
1da177e4 | 654 | .readlink = generic_readlink, |
416c6d5b NS |
655 | .follow_link = xfs_vn_follow_link, |
656 | .put_link = xfs_vn_put_link, | |
18f4c644 | 657 | .check_acl = xfs_check_acl, |
416c6d5b NS |
658 | .getattr = xfs_vn_getattr, |
659 | .setattr = xfs_vn_setattr, | |
0ec58516 LM |
660 | .setxattr = generic_setxattr, |
661 | .getxattr = generic_getxattr, | |
662 | .removexattr = generic_removexattr, | |
416c6d5b | 663 | .listxattr = xfs_vn_listxattr, |
1da177e4 | 664 | }; |
41be8bed CH |
665 | |
666 | STATIC void | |
667 | xfs_diflags_to_iflags( | |
668 | struct inode *inode, | |
669 | struct xfs_inode *ip) | |
670 | { | |
671 | if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) | |
672 | inode->i_flags |= S_IMMUTABLE; | |
673 | else | |
674 | inode->i_flags &= ~S_IMMUTABLE; | |
675 | if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) | |
676 | inode->i_flags |= S_APPEND; | |
677 | else | |
678 | inode->i_flags &= ~S_APPEND; | |
679 | if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) | |
680 | inode->i_flags |= S_SYNC; | |
681 | else | |
682 | inode->i_flags &= ~S_SYNC; | |
683 | if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) | |
684 | inode->i_flags |= S_NOATIME; | |
685 | else | |
686 | inode->i_flags &= ~S_NOATIME; | |
687 | } | |
688 | ||
689 | /* | |
690 | * Initialize the Linux inode, set up the operation vectors and | |
691 | * unlock the inode. | |
692 | * | |
693 | * When reading existing inodes from disk this is called directly | |
694 | * from xfs_iget, when creating a new inode it is called from | |
695 | * xfs_ialloc after setting up the inode. | |
bf904248 DC |
696 | * |
697 | * We are always called with an uninitialised linux inode here. | |
698 | * We need to initialise the necessary fields and take a reference | |
699 | * on it. | |
41be8bed CH |
700 | */ |
701 | void | |
702 | xfs_setup_inode( | |
703 | struct xfs_inode *ip) | |
704 | { | |
bf904248 DC |
705 | struct inode *inode = &ip->i_vnode; |
706 | ||
707 | inode->i_ino = ip->i_ino; | |
eaff8079 | 708 | inode->i_state = I_NEW; |
646ec461 CH |
709 | |
710 | inode_sb_list_add(inode); | |
c6f6cd06 CH |
711 | /* make the inode look hashed for the writeback code */ |
712 | hlist_add_fake(&inode->i_hash); | |
41be8bed CH |
713 | |
714 | inode->i_mode = ip->i_d.di_mode; | |
715 | inode->i_nlink = ip->i_d.di_nlink; | |
716 | inode->i_uid = ip->i_d.di_uid; | |
717 | inode->i_gid = ip->i_d.di_gid; | |
718 | ||
719 | switch (inode->i_mode & S_IFMT) { | |
720 | case S_IFBLK: | |
721 | case S_IFCHR: | |
722 | inode->i_rdev = | |
723 | MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
724 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
725 | break; | |
726 | default: | |
727 | inode->i_rdev = 0; | |
728 | break; | |
729 | } | |
730 | ||
731 | inode->i_generation = ip->i_d.di_gen; | |
732 | i_size_write(inode, ip->i_d.di_size); | |
733 | inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; | |
734 | inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; | |
735 | inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; | |
736 | inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; | |
737 | inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; | |
738 | inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; | |
739 | xfs_diflags_to_iflags(inode, ip); | |
41be8bed CH |
740 | |
741 | switch (inode->i_mode & S_IFMT) { | |
742 | case S_IFREG: | |
743 | inode->i_op = &xfs_inode_operations; | |
744 | inode->i_fop = &xfs_file_operations; | |
745 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
746 | break; | |
747 | case S_IFDIR: | |
748 | if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb)) | |
749 | inode->i_op = &xfs_dir_ci_inode_operations; | |
750 | else | |
751 | inode->i_op = &xfs_dir_inode_operations; | |
752 | inode->i_fop = &xfs_dir_file_operations; | |
753 | break; | |
754 | case S_IFLNK: | |
755 | inode->i_op = &xfs_symlink_inode_operations; | |
756 | if (!(ip->i_df.if_flags & XFS_IFINLINE)) | |
757 | inode->i_mapping->a_ops = &xfs_address_space_operations; | |
758 | break; | |
759 | default: | |
760 | inode->i_op = &xfs_inode_operations; | |
761 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
762 | break; | |
763 | } | |
764 | ||
765 | xfs_iflags_clear(ip, XFS_INEW); | |
766 | barrier(); | |
767 | ||
768 | unlock_new_inode(inode); | |
769 | } |