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Commit | Line | Data |
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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 | 18 | #include "xfs.h" |
1da177e4 | 19 | #include "xfs_fs.h" |
a844f451 | 20 | #include "xfs_bit.h" |
1da177e4 | 21 | #include "xfs_log.h" |
a844f451 | 22 | #include "xfs_inum.h" |
1da177e4 LT |
23 | #include "xfs_trans.h" |
24 | #include "xfs_sb.h" | |
a844f451 | 25 | #include "xfs_ag.h" |
1da177e4 LT |
26 | #include "xfs_dir2.h" |
27 | #include "xfs_alloc.h" | |
28 | #include "xfs_dmapi.h" | |
29 | #include "xfs_mount.h" | |
1da177e4 | 30 | #include "xfs_bmap_btree.h" |
a844f451 | 31 | #include "xfs_alloc_btree.h" |
1da177e4 | 32 | #include "xfs_ialloc_btree.h" |
a844f451 | 33 | #include "xfs_attr_sf.h" |
1da177e4 LT |
34 | #include "xfs_dir2_sf.h" |
35 | #include "xfs_dinode.h" | |
36 | #include "xfs_inode.h" | |
a844f451 NS |
37 | #include "xfs_btree.h" |
38 | #include "xfs_ialloc.h" | |
1da177e4 | 39 | #include "xfs_rtalloc.h" |
1da177e4 | 40 | #include "xfs_itable.h" |
a844f451 | 41 | #include "xfs_error.h" |
1da177e4 LT |
42 | #include "xfs_rw.h" |
43 | #include "xfs_acl.h" | |
1da177e4 | 44 | #include "xfs_attr.h" |
a844f451 | 45 | #include "xfs_bmap.h" |
1da177e4 LT |
46 | #include "xfs_buf_item.h" |
47 | #include "xfs_utils.h" | |
48 | #include "xfs_dfrag.h" | |
49 | #include "xfs_fsops.h" | |
993386c1 | 50 | #include "xfs_vnodeops.h" |
25fe55e8 CH |
51 | #include "xfs_quota.h" |
52 | #include "xfs_inode_item.h" | |
d296d30a | 53 | #include "xfs_export.h" |
1da177e4 | 54 | |
16f7e0fe | 55 | #include <linux/capability.h> |
1da177e4 LT |
56 | #include <linux/dcache.h> |
57 | #include <linux/mount.h> | |
58 | #include <linux/namei.h> | |
59 | #include <linux/pagemap.h> | |
d296d30a | 60 | #include <linux/exportfs.h> |
1da177e4 LT |
61 | |
62 | /* | |
63 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
64 | * a file or fs handle. | |
65 | * | |
66 | * XFS_IOC_PATH_TO_FSHANDLE | |
67 | * returns fs handle for a mount point or path within that mount point | |
68 | * XFS_IOC_FD_TO_HANDLE | |
69 | * returns full handle for a FD opened in user space | |
70 | * XFS_IOC_PATH_TO_HANDLE | |
71 | * returns full handle for a path | |
72 | */ | |
d5547f9f | 73 | int |
1da177e4 LT |
74 | xfs_find_handle( |
75 | unsigned int cmd, | |
743bb465 | 76 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
77 | { |
78 | int hsize; | |
79 | xfs_handle_t handle; | |
1da177e4 | 80 | struct inode *inode; |
1da177e4 | 81 | |
1da177e4 LT |
82 | memset((char *)&handle, 0, sizeof(handle)); |
83 | ||
84 | switch (cmd) { | |
85 | case XFS_IOC_PATH_TO_FSHANDLE: | |
86 | case XFS_IOC_PATH_TO_HANDLE: { | |
2d8f3038 | 87 | struct path path; |
743bb465 | 88 | int error = user_lpath((const char __user *)hreq->path, &path); |
1da177e4 LT |
89 | if (error) |
90 | return error; | |
91 | ||
2d8f3038 AV |
92 | ASSERT(path.dentry); |
93 | ASSERT(path.dentry->d_inode); | |
94 | inode = igrab(path.dentry->d_inode); | |
95 | path_put(&path); | |
1da177e4 LT |
96 | break; |
97 | } | |
98 | ||
99 | case XFS_IOC_FD_TO_HANDLE: { | |
100 | struct file *file; | |
101 | ||
743bb465 | 102 | file = fget(hreq->fd); |
1da177e4 LT |
103 | if (!file) |
104 | return -EBADF; | |
105 | ||
e678fb0d JJS |
106 | ASSERT(file->f_path.dentry); |
107 | ASSERT(file->f_path.dentry->d_inode); | |
108 | inode = igrab(file->f_path.dentry->d_inode); | |
1da177e4 LT |
109 | fput(file); |
110 | break; | |
111 | } | |
112 | ||
113 | default: | |
114 | ASSERT(0); | |
115 | return -XFS_ERROR(EINVAL); | |
116 | } | |
117 | ||
118 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) { | |
119 | /* we're not in XFS anymore, Toto */ | |
120 | iput(inode); | |
121 | return -XFS_ERROR(EINVAL); | |
122 | } | |
123 | ||
0432dab2 CH |
124 | switch (inode->i_mode & S_IFMT) { |
125 | case S_IFREG: | |
126 | case S_IFDIR: | |
127 | case S_IFLNK: | |
128 | break; | |
129 | default: | |
1da177e4 LT |
130 | iput(inode); |
131 | return -XFS_ERROR(EBADF); | |
132 | } | |
133 | ||
134 | /* now we can grab the fsid */ | |
0ce4cfd4 | 135 | memcpy(&handle.ha_fsid, XFS_I(inode)->i_mount->m_fixedfsid, |
2f6f7b3d | 136 | sizeof(xfs_fsid_t)); |
1da177e4 LT |
137 | hsize = sizeof(xfs_fsid_t); |
138 | ||
139 | if (cmd != XFS_IOC_PATH_TO_FSHANDLE) { | |
6e7f75ea | 140 | xfs_inode_t *ip = XFS_I(inode); |
1da177e4 LT |
141 | int lock_mode; |
142 | ||
143 | /* need to get access to the xfs_inode to read the generation */ | |
1da177e4 LT |
144 | lock_mode = xfs_ilock_map_shared(ip); |
145 | ||
146 | /* fill in fid section of handle from inode */ | |
c6143911 CH |
147 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
148 | sizeof(handle.ha_fid.fid_len); | |
149 | handle.ha_fid.fid_pad = 0; | |
150 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
151 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
152 | |
153 | xfs_iunlock_map_shared(ip, lock_mode); | |
154 | ||
155 | hsize = XFS_HSIZE(handle); | |
156 | } | |
157 | ||
158 | /* now copy our handle into the user buffer & write out the size */ | |
743bb465 | 159 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
160 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) { | |
1da177e4 LT |
161 | iput(inode); |
162 | return -XFS_ERROR(EFAULT); | |
163 | } | |
164 | ||
165 | iput(inode); | |
166 | return 0; | |
167 | } | |
168 | ||
1da177e4 | 169 | /* |
d296d30a CH |
170 | * No need to do permission checks on the various pathname components |
171 | * as the handle operations are privileged. | |
1da177e4 LT |
172 | */ |
173 | STATIC int | |
d296d30a CH |
174 | xfs_handle_acceptable( |
175 | void *context, | |
176 | struct dentry *dentry) | |
177 | { | |
178 | return 1; | |
179 | } | |
180 | ||
181 | /* | |
182 | * Convert userspace handle data into a dentry. | |
183 | */ | |
184 | struct dentry * | |
185 | xfs_handle_to_dentry( | |
186 | struct file *parfilp, | |
187 | void __user *uhandle, | |
188 | u32 hlen) | |
1da177e4 | 189 | { |
1da177e4 | 190 | xfs_handle_t handle; |
d296d30a | 191 | struct xfs_fid64 fid; |
1da177e4 LT |
192 | |
193 | /* | |
194 | * Only allow handle opens under a directory. | |
195 | */ | |
d296d30a CH |
196 | if (!S_ISDIR(parfilp->f_path.dentry->d_inode->i_mode)) |
197 | return ERR_PTR(-ENOTDIR); | |
198 | ||
199 | if (hlen != sizeof(xfs_handle_t)) | |
200 | return ERR_PTR(-EINVAL); | |
201 | if (copy_from_user(&handle, uhandle, hlen)) | |
202 | return ERR_PTR(-EFAULT); | |
203 | if (handle.ha_fid.fid_len != | |
204 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
205 | return ERR_PTR(-EINVAL); | |
206 | ||
207 | memset(&fid, 0, sizeof(struct fid)); | |
208 | fid.ino = handle.ha_fid.fid_ino; | |
209 | fid.gen = handle.ha_fid.fid_gen; | |
210 | ||
211 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
212 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
213 | xfs_handle_acceptable, NULL); | |
214 | } | |
1da177e4 | 215 | |
d296d30a CH |
216 | STATIC struct dentry * |
217 | xfs_handlereq_to_dentry( | |
218 | struct file *parfilp, | |
219 | xfs_fsop_handlereq_t *hreq) | |
220 | { | |
221 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
222 | } |
223 | ||
d5547f9f | 224 | int |
1da177e4 | 225 | xfs_open_by_handle( |
1da177e4 | 226 | struct file *parfilp, |
d296d30a | 227 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 228 | { |
745ca247 | 229 | const struct cred *cred = current_cred(); |
1da177e4 | 230 | int error; |
d296d30a | 231 | int fd; |
1da177e4 LT |
232 | int permflag; |
233 | struct file *filp; | |
234 | struct inode *inode; | |
235 | struct dentry *dentry; | |
1da177e4 LT |
236 | |
237 | if (!capable(CAP_SYS_ADMIN)) | |
238 | return -XFS_ERROR(EPERM); | |
1da177e4 | 239 | |
d296d30a CH |
240 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
241 | if (IS_ERR(dentry)) | |
242 | return PTR_ERR(dentry); | |
243 | inode = dentry->d_inode; | |
1da177e4 LT |
244 | |
245 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
246 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
d296d30a CH |
247 | error = -XFS_ERROR(EPERM); |
248 | goto out_dput; | |
1da177e4 LT |
249 | } |
250 | ||
251 | #if BITS_PER_LONG != 32 | |
743bb465 | 252 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 253 | #endif |
d296d30a | 254 | |
1da177e4 | 255 | /* Put open permission in namei format. */ |
743bb465 | 256 | permflag = hreq->oflags; |
1da177e4 LT |
257 | if ((permflag+1) & O_ACCMODE) |
258 | permflag++; | |
259 | if (permflag & O_TRUNC) | |
260 | permflag |= 2; | |
261 | ||
262 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && | |
263 | (permflag & FMODE_WRITE) && IS_APPEND(inode)) { | |
d296d30a CH |
264 | error = -XFS_ERROR(EPERM); |
265 | goto out_dput; | |
1da177e4 LT |
266 | } |
267 | ||
268 | if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) { | |
d296d30a CH |
269 | error = -XFS_ERROR(EACCES); |
270 | goto out_dput; | |
1da177e4 LT |
271 | } |
272 | ||
273 | /* Can't write directories. */ | |
d296d30a CH |
274 | if (S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) { |
275 | error = -XFS_ERROR(EISDIR); | |
276 | goto out_dput; | |
1da177e4 LT |
277 | } |
278 | ||
d296d30a CH |
279 | fd = get_unused_fd(); |
280 | if (fd < 0) { | |
281 | error = fd; | |
282 | goto out_dput; | |
1da177e4 LT |
283 | } |
284 | ||
d296d30a CH |
285 | filp = dentry_open(dentry, mntget(parfilp->f_path.mnt), |
286 | hreq->oflags, cred); | |
1da177e4 | 287 | if (IS_ERR(filp)) { |
d296d30a CH |
288 | put_unused_fd(fd); |
289 | return PTR_ERR(filp); | |
1da177e4 | 290 | } |
4d4be482 | 291 | |
2e2e7bb1 | 292 | if (inode->i_mode & S_IFREG) { |
2e2e7bb1 | 293 | filp->f_flags |= O_NOATIME; |
4d4be482 | 294 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 295 | } |
1da177e4 | 296 | |
d296d30a CH |
297 | fd_install(fd, filp); |
298 | return fd; | |
299 | ||
300 | out_dput: | |
301 | dput(dentry); | |
302 | return error; | |
1da177e4 LT |
303 | } |
304 | ||
804c83c3 CH |
305 | /* |
306 | * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's | |
307 | * unused first argument. | |
308 | */ | |
309 | STATIC int | |
310 | do_readlink( | |
311 | char __user *buffer, | |
312 | int buflen, | |
313 | const char *link) | |
314 | { | |
315 | int len; | |
316 | ||
317 | len = PTR_ERR(link); | |
318 | if (IS_ERR(link)) | |
319 | goto out; | |
320 | ||
321 | len = strlen(link); | |
322 | if (len > (unsigned) buflen) | |
323 | len = buflen; | |
324 | if (copy_to_user(buffer, link, len)) | |
325 | len = -EFAULT; | |
326 | out: | |
327 | return len; | |
328 | } | |
329 | ||
330 | ||
d5547f9f | 331 | int |
1da177e4 | 332 | xfs_readlink_by_handle( |
d296d30a CH |
333 | struct file *parfilp, |
334 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 335 | { |
d296d30a | 336 | struct dentry *dentry; |
1da177e4 | 337 | __u32 olen; |
804c83c3 CH |
338 | void *link; |
339 | int error; | |
1da177e4 LT |
340 | |
341 | if (!capable(CAP_SYS_ADMIN)) | |
342 | return -XFS_ERROR(EPERM); | |
1da177e4 | 343 | |
d296d30a CH |
344 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
345 | if (IS_ERR(dentry)) | |
346 | return PTR_ERR(dentry); | |
1da177e4 LT |
347 | |
348 | /* Restrict this handle operation to symlinks only. */ | |
d296d30a | 349 | if (!S_ISLNK(dentry->d_inode->i_mode)) { |
804c83c3 | 350 | error = -XFS_ERROR(EINVAL); |
d296d30a | 351 | goto out_dput; |
1da177e4 LT |
352 | } |
353 | ||
743bb465 | 354 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
804c83c3 | 355 | error = -XFS_ERROR(EFAULT); |
d296d30a | 356 | goto out_dput; |
1da177e4 | 357 | } |
1da177e4 | 358 | |
804c83c3 | 359 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
d296d30a CH |
360 | if (!link) { |
361 | error = -XFS_ERROR(ENOMEM); | |
362 | goto out_dput; | |
363 | } | |
1da177e4 | 364 | |
d296d30a | 365 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
67fcaa73 | 366 | if (error) |
804c83c3 | 367 | goto out_kfree; |
743bb465 | 368 | error = do_readlink(hreq->ohandle, olen, link); |
804c83c3 CH |
369 | if (error) |
370 | goto out_kfree; | |
67fcaa73 | 371 | |
804c83c3 CH |
372 | out_kfree: |
373 | kfree(link); | |
d296d30a CH |
374 | out_dput: |
375 | dput(dentry); | |
804c83c3 | 376 | return error; |
1da177e4 LT |
377 | } |
378 | ||
379 | STATIC int | |
380 | xfs_fssetdm_by_handle( | |
d296d30a CH |
381 | struct file *parfilp, |
382 | void __user *arg) | |
1da177e4 LT |
383 | { |
384 | int error; | |
385 | struct fsdmidata fsd; | |
386 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 387 | struct dentry *dentry; |
1da177e4 LT |
388 | |
389 | if (!capable(CAP_MKNOD)) | |
390 | return -XFS_ERROR(EPERM); | |
391 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
392 | return -XFS_ERROR(EFAULT); | |
393 | ||
d296d30a CH |
394 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
395 | if (IS_ERR(dentry)) | |
396 | return PTR_ERR(dentry); | |
1da177e4 | 397 | |
d296d30a | 398 | if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { |
6e7f75ea CH |
399 | error = -XFS_ERROR(EPERM); |
400 | goto out; | |
1da177e4 LT |
401 | } |
402 | ||
403 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
6e7f75ea CH |
404 | error = -XFS_ERROR(EFAULT); |
405 | goto out; | |
1da177e4 LT |
406 | } |
407 | ||
d296d30a | 408 | error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, |
6e7f75ea | 409 | fsd.fsd_dmstate); |
1da177e4 | 410 | |
6e7f75ea | 411 | out: |
d296d30a | 412 | dput(dentry); |
6e7f75ea | 413 | return error; |
1da177e4 LT |
414 | } |
415 | ||
416 | STATIC int | |
417 | xfs_attrlist_by_handle( | |
d296d30a CH |
418 | struct file *parfilp, |
419 | void __user *arg) | |
1da177e4 | 420 | { |
d296d30a | 421 | int error = -ENOMEM; |
1da177e4 LT |
422 | attrlist_cursor_kern_t *cursor; |
423 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
d296d30a | 424 | struct dentry *dentry; |
1da177e4 LT |
425 | char *kbuf; |
426 | ||
427 | if (!capable(CAP_SYS_ADMIN)) | |
428 | return -XFS_ERROR(EPERM); | |
429 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
430 | return -XFS_ERROR(EFAULT); | |
431 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
432 | return -XFS_ERROR(EINVAL); | |
433 | ||
90ad58a8 CH |
434 | /* |
435 | * Reject flags, only allow namespaces. | |
436 | */ | |
437 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
438 | return -XFS_ERROR(EINVAL); | |
439 | ||
d296d30a CH |
440 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
441 | if (IS_ERR(dentry)) | |
442 | return PTR_ERR(dentry); | |
1da177e4 LT |
443 | |
444 | kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL); | |
445 | if (!kbuf) | |
d296d30a | 446 | goto out_dput; |
1da177e4 LT |
447 | |
448 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
d296d30a | 449 | error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, |
739bfb2a | 450 | al_hreq.flags, cursor); |
1da177e4 LT |
451 | if (error) |
452 | goto out_kfree; | |
453 | ||
454 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
455 | error = -EFAULT; | |
456 | ||
457 | out_kfree: | |
458 | kfree(kbuf); | |
d296d30a CH |
459 | out_dput: |
460 | dput(dentry); | |
461 | return error; | |
1da177e4 LT |
462 | } |
463 | ||
28750975 | 464 | int |
1da177e4 | 465 | xfs_attrmulti_attr_get( |
739bfb2a | 466 | struct inode *inode, |
1da177e4 LT |
467 | char *name, |
468 | char __user *ubuf, | |
469 | __uint32_t *len, | |
470 | __uint32_t flags) | |
471 | { | |
472 | char *kbuf; | |
473 | int error = EFAULT; | |
e8b0ebaa | 474 | |
1da177e4 LT |
475 | if (*len > XATTR_SIZE_MAX) |
476 | return EINVAL; | |
477 | kbuf = kmalloc(*len, GFP_KERNEL); | |
478 | if (!kbuf) | |
479 | return ENOMEM; | |
480 | ||
e8b0ebaa | 481 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
482 | if (error) |
483 | goto out_kfree; | |
484 | ||
485 | if (copy_to_user(ubuf, kbuf, *len)) | |
486 | error = EFAULT; | |
487 | ||
488 | out_kfree: | |
489 | kfree(kbuf); | |
490 | return error; | |
491 | } | |
492 | ||
28750975 | 493 | int |
1da177e4 | 494 | xfs_attrmulti_attr_set( |
739bfb2a | 495 | struct inode *inode, |
1da177e4 LT |
496 | char *name, |
497 | const char __user *ubuf, | |
498 | __uint32_t len, | |
499 | __uint32_t flags) | |
500 | { | |
501 | char *kbuf; | |
502 | int error = EFAULT; | |
503 | ||
739bfb2a | 504 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
505 | return EPERM; |
506 | if (len > XATTR_SIZE_MAX) | |
507 | return EINVAL; | |
508 | ||
509 | kbuf = kmalloc(len, GFP_KERNEL); | |
510 | if (!kbuf) | |
511 | return ENOMEM; | |
512 | ||
513 | if (copy_from_user(kbuf, ubuf, len)) | |
514 | goto out_kfree; | |
e8b0ebaa | 515 | |
739bfb2a | 516 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 LT |
517 | |
518 | out_kfree: | |
519 | kfree(kbuf); | |
520 | return error; | |
521 | } | |
522 | ||
28750975 | 523 | int |
1da177e4 | 524 | xfs_attrmulti_attr_remove( |
739bfb2a | 525 | struct inode *inode, |
1da177e4 LT |
526 | char *name, |
527 | __uint32_t flags) | |
528 | { | |
739bfb2a | 529 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 530 | return EPERM; |
739bfb2a | 531 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
532 | } |
533 | ||
534 | STATIC int | |
535 | xfs_attrmulti_by_handle( | |
42a74f20 | 536 | struct file *parfilp, |
d296d30a | 537 | void __user *arg) |
1da177e4 LT |
538 | { |
539 | int error; | |
540 | xfs_attr_multiop_t *ops; | |
541 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 542 | struct dentry *dentry; |
1da177e4 LT |
543 | unsigned int i, size; |
544 | char *attr_name; | |
545 | ||
546 | if (!capable(CAP_SYS_ADMIN)) | |
547 | return -XFS_ERROR(EPERM); | |
548 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
549 | return -XFS_ERROR(EFAULT); | |
550 | ||
d296d30a CH |
551 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
552 | if (IS_ERR(dentry)) | |
553 | return PTR_ERR(dentry); | |
1da177e4 LT |
554 | |
555 | error = E2BIG; | |
e182f57a | 556 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 557 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 558 | goto out_dput; |
1da177e4 LT |
559 | |
560 | error = ENOMEM; | |
561 | ops = kmalloc(size, GFP_KERNEL); | |
562 | if (!ops) | |
d296d30a | 563 | goto out_dput; |
1da177e4 LT |
564 | |
565 | error = EFAULT; | |
566 | if (copy_from_user(ops, am_hreq.ops, size)) | |
567 | goto out_kfree_ops; | |
568 | ||
569 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
570 | if (!attr_name) | |
571 | goto out_kfree_ops; | |
572 | ||
573 | ||
574 | error = 0; | |
575 | for (i = 0; i < am_hreq.opcount; i++) { | |
576 | ops[i].am_error = strncpy_from_user(attr_name, | |
577 | ops[i].am_attrname, MAXNAMELEN); | |
578 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
579 | error = -ERANGE; | |
580 | if (ops[i].am_error < 0) | |
581 | break; | |
582 | ||
583 | switch (ops[i].am_opcode) { | |
584 | case ATTR_OP_GET: | |
d296d30a CH |
585 | ops[i].am_error = xfs_attrmulti_attr_get( |
586 | dentry->d_inode, attr_name, | |
587 | ops[i].am_attrvalue, &ops[i].am_length, | |
588 | ops[i].am_flags); | |
1da177e4 LT |
589 | break; |
590 | case ATTR_OP_SET: | |
42a74f20 DH |
591 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
592 | if (ops[i].am_error) | |
593 | break; | |
d296d30a CH |
594 | ops[i].am_error = xfs_attrmulti_attr_set( |
595 | dentry->d_inode, attr_name, | |
596 | ops[i].am_attrvalue, ops[i].am_length, | |
597 | ops[i].am_flags); | |
42a74f20 | 598 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
599 | break; |
600 | case ATTR_OP_REMOVE: | |
42a74f20 DH |
601 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
602 | if (ops[i].am_error) | |
603 | break; | |
d296d30a CH |
604 | ops[i].am_error = xfs_attrmulti_attr_remove( |
605 | dentry->d_inode, attr_name, | |
606 | ops[i].am_flags); | |
42a74f20 | 607 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
608 | break; |
609 | default: | |
610 | ops[i].am_error = EINVAL; | |
611 | } | |
612 | } | |
613 | ||
614 | if (copy_to_user(am_hreq.ops, ops, size)) | |
615 | error = XFS_ERROR(EFAULT); | |
616 | ||
617 | kfree(attr_name); | |
618 | out_kfree_ops: | |
619 | kfree(ops); | |
d296d30a CH |
620 | out_dput: |
621 | dput(dentry); | |
1da177e4 LT |
622 | return -error; |
623 | } | |
624 | ||
d5547f9f | 625 | int |
1da177e4 | 626 | xfs_ioc_space( |
993386c1 | 627 | struct xfs_inode *ip, |
f37ea149 | 628 | struct inode *inode, |
1da177e4 LT |
629 | struct file *filp, |
630 | int ioflags, | |
631 | unsigned int cmd, | |
743bb465 | 632 | xfs_flock64_t *bf) |
1da177e4 | 633 | { |
1da177e4 LT |
634 | int attr_flags = 0; |
635 | int error; | |
636 | ||
743bb465 | 637 | /* |
638 | * Only allow the sys admin to reserve space unless | |
639 | * unwritten extents are enabled. | |
640 | */ | |
641 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
642 | !capable(CAP_SYS_ADMIN)) | |
643 | return -XFS_ERROR(EPERM); | |
644 | ||
f37ea149 | 645 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
646 | return -XFS_ERROR(EPERM); |
647 | ||
ad4a8ac4 | 648 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
649 | return -XFS_ERROR(EBADF); |
650 | ||
f37ea149 | 651 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
652 | return -XFS_ERROR(EINVAL); |
653 | ||
1da177e4 | 654 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
0f285c8a | 655 | attr_flags |= XFS_ATTR_NONBLOCK; |
1da177e4 | 656 | if (ioflags & IO_INVIS) |
0f285c8a | 657 | attr_flags |= XFS_ATTR_DMI; |
1da177e4 | 658 | |
743bb465 | 659 | error = xfs_change_file_space(ip, cmd, bf, filp->f_pos, attr_flags); |
1da177e4 LT |
660 | return -error; |
661 | } | |
662 | ||
663 | STATIC int | |
664 | xfs_ioc_bulkstat( | |
665 | xfs_mount_t *mp, | |
666 | unsigned int cmd, | |
667 | void __user *arg) | |
668 | { | |
669 | xfs_fsop_bulkreq_t bulkreq; | |
670 | int count; /* # of records returned */ | |
671 | xfs_ino_t inlast; /* last inode number */ | |
672 | int done; | |
673 | int error; | |
674 | ||
675 | /* done = 1 if there are more stats to get and if bulkstat */ | |
676 | /* should be called again (unused here, but used in dmapi) */ | |
677 | ||
678 | if (!capable(CAP_SYS_ADMIN)) | |
679 | return -EPERM; | |
680 | ||
681 | if (XFS_FORCED_SHUTDOWN(mp)) | |
682 | return -XFS_ERROR(EIO); | |
683 | ||
684 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
685 | return -XFS_ERROR(EFAULT); | |
686 | ||
687 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
688 | return -XFS_ERROR(EFAULT); | |
689 | ||
690 | if ((count = bulkreq.icount) <= 0) | |
691 | return -XFS_ERROR(EINVAL); | |
692 | ||
cd57e594 LM |
693 | if (bulkreq.ubuffer == NULL) |
694 | return -XFS_ERROR(EINVAL); | |
695 | ||
1da177e4 LT |
696 | if (cmd == XFS_IOC_FSINUMBERS) |
697 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 698 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 LT |
699 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
700 | error = xfs_bulkstat_single(mp, &inlast, | |
701 | bulkreq.ubuffer, &done); | |
cd57e594 LM |
702 | else /* XFS_IOC_FSBULKSTAT */ |
703 | error = xfs_bulkstat(mp, &inlast, &count, | |
704 | (bulkstat_one_pf)xfs_bulkstat_one, NULL, | |
705 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
706 | BULKSTAT_FG_QUICK, &done); | |
1da177e4 LT |
707 | |
708 | if (error) | |
709 | return -error; | |
710 | ||
711 | if (bulkreq.ocount != NULL) { | |
712 | if (copy_to_user(bulkreq.lastip, &inlast, | |
713 | sizeof(xfs_ino_t))) | |
714 | return -XFS_ERROR(EFAULT); | |
715 | ||
716 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
717 | return -XFS_ERROR(EFAULT); | |
718 | } | |
719 | ||
720 | return 0; | |
721 | } | |
722 | ||
723 | STATIC int | |
724 | xfs_ioc_fsgeometry_v1( | |
725 | xfs_mount_t *mp, | |
726 | void __user *arg) | |
727 | { | |
728 | xfs_fsop_geom_v1_t fsgeo; | |
729 | int error; | |
730 | ||
731 | error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3); | |
732 | if (error) | |
733 | return -error; | |
734 | ||
735 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
736 | return -XFS_ERROR(EFAULT); | |
737 | return 0; | |
738 | } | |
739 | ||
740 | STATIC int | |
741 | xfs_ioc_fsgeometry( | |
742 | xfs_mount_t *mp, | |
743 | void __user *arg) | |
744 | { | |
745 | xfs_fsop_geom_t fsgeo; | |
746 | int error; | |
747 | ||
748 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
749 | if (error) | |
750 | return -error; | |
751 | ||
752 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
753 | return -XFS_ERROR(EFAULT); | |
754 | return 0; | |
755 | } | |
756 | ||
757 | /* | |
758 | * Linux extended inode flags interface. | |
759 | */ | |
1da177e4 LT |
760 | |
761 | STATIC unsigned int | |
762 | xfs_merge_ioc_xflags( | |
763 | unsigned int flags, | |
764 | unsigned int start) | |
765 | { | |
766 | unsigned int xflags = start; | |
767 | ||
39058a0e | 768 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
769 | xflags |= XFS_XFLAG_IMMUTABLE; |
770 | else | |
771 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 772 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
773 | xflags |= XFS_XFLAG_APPEND; |
774 | else | |
775 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 776 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
777 | xflags |= XFS_XFLAG_SYNC; |
778 | else | |
779 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 780 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
781 | xflags |= XFS_XFLAG_NOATIME; |
782 | else | |
783 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 784 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
785 | xflags |= XFS_XFLAG_NODUMP; |
786 | else | |
787 | xflags &= ~XFS_XFLAG_NODUMP; | |
788 | ||
789 | return xflags; | |
790 | } | |
791 | ||
792 | STATIC unsigned int | |
793 | xfs_di2lxflags( | |
794 | __uint16_t di_flags) | |
795 | { | |
796 | unsigned int flags = 0; | |
797 | ||
798 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 799 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 800 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 801 | flags |= FS_APPEND_FL; |
1da177e4 | 802 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 803 | flags |= FS_SYNC_FL; |
1da177e4 | 804 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 805 | flags |= FS_NOATIME_FL; |
1da177e4 | 806 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 807 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
808 | return flags; |
809 | } | |
810 | ||
c83bfab1 CH |
811 | STATIC int |
812 | xfs_ioc_fsgetxattr( | |
813 | xfs_inode_t *ip, | |
814 | int attr, | |
815 | void __user *arg) | |
816 | { | |
817 | struct fsxattr fa; | |
818 | ||
819 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
820 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
821 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
822 | fa.fsx_projid = ip->i_d.di_projid; | |
823 | ||
824 | if (attr) { | |
825 | if (ip->i_afp) { | |
826 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
827 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
828 | sizeof(xfs_bmbt_rec_t); | |
829 | else | |
830 | fa.fsx_nextents = ip->i_d.di_anextents; | |
831 | } else | |
832 | fa.fsx_nextents = 0; | |
833 | } else { | |
834 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
835 | fa.fsx_nextents = ip->i_df.if_bytes / | |
836 | sizeof(xfs_bmbt_rec_t); | |
837 | else | |
838 | fa.fsx_nextents = ip->i_d.di_nextents; | |
839 | } | |
840 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
841 | ||
842 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
843 | return -EFAULT; | |
844 | return 0; | |
845 | } | |
846 | ||
25fe55e8 CH |
847 | STATIC void |
848 | xfs_set_diflags( | |
849 | struct xfs_inode *ip, | |
850 | unsigned int xflags) | |
851 | { | |
852 | unsigned int di_flags; | |
853 | ||
854 | /* can't set PREALLOC this way, just preserve it */ | |
855 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
856 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
857 | di_flags |= XFS_DIFLAG_IMMUTABLE; | |
858 | if (xflags & XFS_XFLAG_APPEND) | |
859 | di_flags |= XFS_DIFLAG_APPEND; | |
860 | if (xflags & XFS_XFLAG_SYNC) | |
861 | di_flags |= XFS_DIFLAG_SYNC; | |
862 | if (xflags & XFS_XFLAG_NOATIME) | |
863 | di_flags |= XFS_DIFLAG_NOATIME; | |
864 | if (xflags & XFS_XFLAG_NODUMP) | |
865 | di_flags |= XFS_DIFLAG_NODUMP; | |
866 | if (xflags & XFS_XFLAG_PROJINHERIT) | |
867 | di_flags |= XFS_DIFLAG_PROJINHERIT; | |
868 | if (xflags & XFS_XFLAG_NODEFRAG) | |
869 | di_flags |= XFS_DIFLAG_NODEFRAG; | |
870 | if (xflags & XFS_XFLAG_FILESTREAM) | |
871 | di_flags |= XFS_DIFLAG_FILESTREAM; | |
872 | if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) { | |
873 | if (xflags & XFS_XFLAG_RTINHERIT) | |
874 | di_flags |= XFS_DIFLAG_RTINHERIT; | |
875 | if (xflags & XFS_XFLAG_NOSYMLINKS) | |
876 | di_flags |= XFS_DIFLAG_NOSYMLINKS; | |
877 | if (xflags & XFS_XFLAG_EXTSZINHERIT) | |
878 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; | |
879 | } else if ((ip->i_d.di_mode & S_IFMT) == S_IFREG) { | |
880 | if (xflags & XFS_XFLAG_REALTIME) | |
881 | di_flags |= XFS_DIFLAG_REALTIME; | |
882 | if (xflags & XFS_XFLAG_EXTSIZE) | |
883 | di_flags |= XFS_DIFLAG_EXTSIZE; | |
884 | } | |
885 | ||
886 | ip->i_d.di_flags = di_flags; | |
887 | } | |
888 | ||
f13fae2d CH |
889 | STATIC void |
890 | xfs_diflags_to_linux( | |
891 | struct xfs_inode *ip) | |
892 | { | |
e4f75291 | 893 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
894 | unsigned int xflags = xfs_ip2xflags(ip); |
895 | ||
896 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
897 | inode->i_flags |= S_IMMUTABLE; | |
898 | else | |
899 | inode->i_flags &= ~S_IMMUTABLE; | |
900 | if (xflags & XFS_XFLAG_APPEND) | |
901 | inode->i_flags |= S_APPEND; | |
902 | else | |
903 | inode->i_flags &= ~S_APPEND; | |
904 | if (xflags & XFS_XFLAG_SYNC) | |
905 | inode->i_flags |= S_SYNC; | |
906 | else | |
907 | inode->i_flags &= ~S_SYNC; | |
908 | if (xflags & XFS_XFLAG_NOATIME) | |
909 | inode->i_flags |= S_NOATIME; | |
910 | else | |
911 | inode->i_flags &= ~S_NOATIME; | |
912 | } | |
25fe55e8 CH |
913 | |
914 | #define FSX_PROJID 1 | |
915 | #define FSX_EXTSIZE 2 | |
916 | #define FSX_XFLAGS 4 | |
917 | #define FSX_NONBLOCK 8 | |
918 | ||
919 | STATIC int | |
920 | xfs_ioctl_setattr( | |
921 | xfs_inode_t *ip, | |
922 | struct fsxattr *fa, | |
923 | int mask) | |
924 | { | |
925 | struct xfs_mount *mp = ip->i_mount; | |
926 | struct xfs_trans *tp; | |
927 | unsigned int lock_flags = 0; | |
928 | struct xfs_dquot *udqp = NULL, *gdqp = NULL; | |
929 | struct xfs_dquot *olddquot = NULL; | |
930 | int code; | |
931 | ||
932 | xfs_itrace_entry(ip); | |
933 | ||
934 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
935 | return XFS_ERROR(EROFS); | |
936 | if (XFS_FORCED_SHUTDOWN(mp)) | |
937 | return XFS_ERROR(EIO); | |
938 | ||
939 | /* | |
940 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
941 | * before we start any other transactions. Trying to do this later | |
942 | * is messy. We don't care to take a readlock to look at the ids | |
943 | * in inode here, because we can't hold it across the trans_reserve. | |
944 | * If the IDs do change before we take the ilock, we're covered | |
945 | * because the i_*dquot fields will get updated anyway. | |
946 | */ | |
947 | if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { | |
948 | code = XFS_QM_DQVOPALLOC(mp, ip, ip->i_d.di_uid, | |
949 | ip->i_d.di_gid, fa->fsx_projid, | |
950 | XFS_QMOPT_PQUOTA, &udqp, &gdqp); | |
951 | if (code) | |
952 | return code; | |
953 | } | |
954 | ||
955 | /* | |
956 | * For the other attributes, we acquire the inode lock and | |
957 | * first do an error checking pass. | |
958 | */ | |
959 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
960 | code = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); | |
961 | if (code) | |
962 | goto error_return; | |
963 | ||
964 | lock_flags = XFS_ILOCK_EXCL; | |
965 | xfs_ilock(ip, lock_flags); | |
966 | ||
967 | /* | |
968 | * CAP_FOWNER overrides the following restrictions: | |
969 | * | |
970 | * The user ID of the calling process must be equal | |
971 | * to the file owner ID, except in cases where the | |
972 | * CAP_FSETID capability is applicable. | |
973 | */ | |
91b77712 | 974 | if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) { |
25fe55e8 CH |
975 | code = XFS_ERROR(EPERM); |
976 | goto error_return; | |
977 | } | |
978 | ||
979 | /* | |
980 | * Do a quota reservation only if projid is actually going to change. | |
981 | */ | |
982 | if (mask & FSX_PROJID) { | |
983 | if (XFS_IS_PQUOTA_ON(mp) && | |
984 | ip->i_d.di_projid != fa->fsx_projid) { | |
985 | ASSERT(tp); | |
986 | code = XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, udqp, gdqp, | |
987 | capable(CAP_FOWNER) ? | |
988 | XFS_QMOPT_FORCE_RES : 0); | |
989 | if (code) /* out of quota */ | |
990 | goto error_return; | |
991 | } | |
992 | } | |
993 | ||
994 | if (mask & FSX_EXTSIZE) { | |
995 | /* | |
996 | * Can't change extent size if any extents are allocated. | |
997 | */ | |
998 | if (ip->i_d.di_nextents && | |
999 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != | |
1000 | fa->fsx_extsize)) { | |
1001 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1002 | goto error_return; | |
1003 | } | |
1004 | ||
1005 | /* | |
1006 | * Extent size must be a multiple of the appropriate block | |
1007 | * size, if set at all. | |
1008 | */ | |
1009 | if (fa->fsx_extsize != 0) { | |
1010 | xfs_extlen_t size; | |
1011 | ||
1012 | if (XFS_IS_REALTIME_INODE(ip) || | |
1013 | ((mask & FSX_XFLAGS) && | |
1014 | (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { | |
1015 | size = mp->m_sb.sb_rextsize << | |
1016 | mp->m_sb.sb_blocklog; | |
1017 | } else { | |
1018 | size = mp->m_sb.sb_blocksize; | |
1019 | } | |
1020 | ||
1021 | if (fa->fsx_extsize % size) { | |
1022 | code = XFS_ERROR(EINVAL); | |
1023 | goto error_return; | |
1024 | } | |
1025 | } | |
1026 | } | |
1027 | ||
1028 | ||
1029 | if (mask & FSX_XFLAGS) { | |
1030 | /* | |
1031 | * Can't change realtime flag if any extents are allocated. | |
1032 | */ | |
1033 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
1034 | (XFS_IS_REALTIME_INODE(ip)) != | |
1035 | (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1036 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1037 | goto error_return; | |
1038 | } | |
1039 | ||
1040 | /* | |
1041 | * If realtime flag is set then must have realtime data. | |
1042 | */ | |
1043 | if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1044 | if ((mp->m_sb.sb_rblocks == 0) || | |
1045 | (mp->m_sb.sb_rextsize == 0) || | |
1046 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { | |
1047 | code = XFS_ERROR(EINVAL); | |
1048 | goto error_return; | |
1049 | } | |
1050 | } | |
1051 | ||
1052 | /* | |
1053 | * Can't modify an immutable/append-only file unless | |
1054 | * we have appropriate permission. | |
1055 | */ | |
1056 | if ((ip->i_d.di_flags & | |
1057 | (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || | |
1058 | (fa->fsx_xflags & | |
1059 | (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && | |
1060 | !capable(CAP_LINUX_IMMUTABLE)) { | |
1061 | code = XFS_ERROR(EPERM); | |
1062 | goto error_return; | |
1063 | } | |
1064 | } | |
1065 | ||
1066 | xfs_trans_ijoin(tp, ip, lock_flags); | |
1067 | xfs_trans_ihold(tp, ip); | |
1068 | ||
1069 | /* | |
1070 | * Change file ownership. Must be the owner or privileged. | |
25fe55e8 CH |
1071 | */ |
1072 | if (mask & FSX_PROJID) { | |
1073 | /* | |
1074 | * CAP_FSETID overrides the following restrictions: | |
1075 | * | |
1076 | * The set-user-ID and set-group-ID bits of a file will be | |
1077 | * cleared upon successful return from chown() | |
1078 | */ | |
1079 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
1080 | !capable(CAP_FSETID)) | |
1081 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
1082 | ||
1083 | /* | |
1084 | * Change the ownerships and register quota modifications | |
1085 | * in the transaction. | |
1086 | */ | |
1087 | if (ip->i_d.di_projid != fa->fsx_projid) { | |
1088 | if (XFS_IS_PQUOTA_ON(mp)) { | |
1089 | olddquot = XFS_QM_DQVOPCHOWN(mp, tp, ip, | |
1090 | &ip->i_gdquot, gdqp); | |
1091 | } | |
1092 | ip->i_d.di_projid = fa->fsx_projid; | |
1093 | ||
1094 | /* | |
1095 | * We may have to rev the inode as well as | |
1096 | * the superblock version number since projids didn't | |
1097 | * exist before DINODE_VERSION_2 and SB_VERSION_NLINK. | |
1098 | */ | |
51ce16d5 | 1099 | if (ip->i_d.di_version == 1) |
25fe55e8 CH |
1100 | xfs_bump_ino_vers2(tp, ip); |
1101 | } | |
1102 | ||
1103 | } | |
1104 | ||
1105 | if (mask & FSX_EXTSIZE) | |
1106 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
f13fae2d | 1107 | if (mask & FSX_XFLAGS) { |
25fe55e8 | 1108 | xfs_set_diflags(ip, fa->fsx_xflags); |
f13fae2d CH |
1109 | xfs_diflags_to_linux(ip); |
1110 | } | |
25fe55e8 CH |
1111 | |
1112 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
1113 | xfs_ichgtime(ip, XFS_ICHGTIME_CHG); | |
1114 | ||
1115 | XFS_STATS_INC(xs_ig_attrchg); | |
1116 | ||
1117 | /* | |
1118 | * If this is a synchronous mount, make sure that the | |
1119 | * transaction goes to disk before returning to the user. | |
1120 | * This is slightly sub-optimal in that truncates require | |
1121 | * two sync transactions instead of one for wsync filesystems. | |
1122 | * One for the truncate and one for the timestamps since we | |
1123 | * don't want to change the timestamps unless we're sure the | |
1124 | * truncate worked. Truncates are less than 1% of the laddis | |
1125 | * mix so this probably isn't worth the trouble to optimize. | |
1126 | */ | |
1127 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1128 | xfs_trans_set_sync(tp); | |
1129 | code = xfs_trans_commit(tp, 0); | |
1130 | xfs_iunlock(ip, lock_flags); | |
1131 | ||
1132 | /* | |
1133 | * Release any dquot(s) the inode had kept before chown. | |
1134 | */ | |
1135 | XFS_QM_DQRELE(mp, olddquot); | |
1136 | XFS_QM_DQRELE(mp, udqp); | |
1137 | XFS_QM_DQRELE(mp, gdqp); | |
1138 | ||
1139 | if (code) | |
1140 | return code; | |
1141 | ||
1142 | if (DM_EVENT_ENABLED(ip, DM_EVENT_ATTRIBUTE)) { | |
1143 | XFS_SEND_NAMESP(mp, DM_EVENT_ATTRIBUTE, ip, DM_RIGHT_NULL, | |
1144 | NULL, DM_RIGHT_NULL, NULL, NULL, 0, 0, | |
1145 | (mask & FSX_NONBLOCK) ? DM_FLAGS_NDELAY : 0); | |
1146 | } | |
1147 | ||
25fe55e8 CH |
1148 | return 0; |
1149 | ||
1150 | error_return: | |
1151 | XFS_QM_DQRELE(mp, udqp); | |
1152 | XFS_QM_DQRELE(mp, gdqp); | |
1153 | xfs_trans_cancel(tp, 0); | |
1154 | if (lock_flags) | |
1155 | xfs_iunlock(ip, lock_flags); | |
1156 | return code; | |
1157 | } | |
1158 | ||
1da177e4 | 1159 | STATIC int |
df26cfe8 | 1160 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1161 | xfs_inode_t *ip, |
1162 | struct file *filp, | |
1da177e4 LT |
1163 | void __user *arg) |
1164 | { | |
1165 | struct fsxattr fa; | |
25fe55e8 | 1166 | unsigned int mask; |
df26cfe8 LM |
1167 | |
1168 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1169 | return -EFAULT; | |
1da177e4 | 1170 | |
25fe55e8 | 1171 | mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; |
df26cfe8 | 1172 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 | 1173 | mask |= FSX_NONBLOCK; |
1da177e4 | 1174 | |
25fe55e8 | 1175 | return -xfs_ioctl_setattr(ip, &fa, mask); |
df26cfe8 | 1176 | } |
1da177e4 | 1177 | |
df26cfe8 LM |
1178 | STATIC int |
1179 | xfs_ioc_getxflags( | |
1180 | xfs_inode_t *ip, | |
1181 | void __user *arg) | |
1182 | { | |
1183 | unsigned int flags; | |
1da177e4 | 1184 | |
df26cfe8 LM |
1185 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1186 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1187 | return -EFAULT; | |
1188 | return 0; | |
1189 | } | |
1da177e4 | 1190 | |
df26cfe8 LM |
1191 | STATIC int |
1192 | xfs_ioc_setxflags( | |
1193 | xfs_inode_t *ip, | |
1194 | struct file *filp, | |
1195 | void __user *arg) | |
1196 | { | |
25fe55e8 | 1197 | struct fsxattr fa; |
df26cfe8 | 1198 | unsigned int flags; |
25fe55e8 | 1199 | unsigned int mask; |
1da177e4 | 1200 | |
df26cfe8 LM |
1201 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1202 | return -EFAULT; | |
1da177e4 | 1203 | |
df26cfe8 LM |
1204 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1205 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1206 | FS_SYNC_FL)) | |
1207 | return -EOPNOTSUPP; | |
1da177e4 | 1208 | |
25fe55e8 | 1209 | mask = FSX_XFLAGS; |
df26cfe8 | 1210 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 CH |
1211 | mask |= FSX_NONBLOCK; |
1212 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); | |
1da177e4 | 1213 | |
25fe55e8 | 1214 | return -xfs_ioctl_setattr(ip, &fa, mask); |
1da177e4 LT |
1215 | } |
1216 | ||
8a7141a8 ES |
1217 | STATIC int |
1218 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) | |
1219 | { | |
1220 | struct getbmap __user *base = *ap; | |
1221 | ||
1222 | /* copy only getbmap portion (not getbmapx) */ | |
1223 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
1224 | return XFS_ERROR(EFAULT); | |
1225 | ||
1226 | *ap += sizeof(struct getbmap); | |
1227 | return 0; | |
1228 | } | |
1229 | ||
1da177e4 LT |
1230 | STATIC int |
1231 | xfs_ioc_getbmap( | |
993386c1 | 1232 | struct xfs_inode *ip, |
1da177e4 LT |
1233 | int ioflags, |
1234 | unsigned int cmd, | |
1235 | void __user *arg) | |
1236 | { | |
8a7141a8 | 1237 | struct getbmapx bmx; |
1da177e4 LT |
1238 | int error; |
1239 | ||
8a7141a8 | 1240 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
1da177e4 LT |
1241 | return -XFS_ERROR(EFAULT); |
1242 | ||
8a7141a8 | 1243 | if (bmx.bmv_count < 2) |
1da177e4 LT |
1244 | return -XFS_ERROR(EINVAL); |
1245 | ||
8a7141a8 | 1246 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
1da177e4 | 1247 | if (ioflags & IO_INVIS) |
8a7141a8 | 1248 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1249 | |
8a7141a8 ES |
1250 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
1251 | (struct getbmap *)arg+1); | |
1da177e4 LT |
1252 | if (error) |
1253 | return -error; | |
1254 | ||
8a7141a8 ES |
1255 | /* copy back header - only size of getbmap */ |
1256 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
1da177e4 LT |
1257 | return -XFS_ERROR(EFAULT); |
1258 | return 0; | |
1259 | } | |
1260 | ||
8a7141a8 ES |
1261 | STATIC int |
1262 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) | |
1263 | { | |
1264 | struct getbmapx __user *base = *ap; | |
1265 | ||
1266 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
1267 | return XFS_ERROR(EFAULT); | |
1268 | ||
1269 | *ap += sizeof(struct getbmapx); | |
1270 | return 0; | |
1271 | } | |
1272 | ||
1da177e4 LT |
1273 | STATIC int |
1274 | xfs_ioc_getbmapx( | |
993386c1 | 1275 | struct xfs_inode *ip, |
1da177e4 LT |
1276 | void __user *arg) |
1277 | { | |
1278 | struct getbmapx bmx; | |
1da177e4 LT |
1279 | int error; |
1280 | ||
1281 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1282 | return -XFS_ERROR(EFAULT); | |
1283 | ||
1284 | if (bmx.bmv_count < 2) | |
1285 | return -XFS_ERROR(EINVAL); | |
1286 | ||
8a7141a8 | 1287 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
1da177e4 LT |
1288 | return -XFS_ERROR(EINVAL); |
1289 | ||
8a7141a8 ES |
1290 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
1291 | (struct getbmapx *)arg+1); | |
1da177e4 LT |
1292 | if (error) |
1293 | return -error; | |
1294 | ||
8a7141a8 ES |
1295 | /* copy back header */ |
1296 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
1da177e4 LT |
1297 | return -XFS_ERROR(EFAULT); |
1298 | ||
1299 | return 0; | |
1300 | } | |
df26cfe8 | 1301 | |
4d4be482 CH |
1302 | /* |
1303 | * Note: some of the ioctl's return positive numbers as a | |
1304 | * byte count indicating success, such as readlink_by_handle. | |
1305 | * So we don't "sign flip" like most other routines. This means | |
1306 | * true errors need to be returned as a negative value. | |
1307 | */ | |
1308 | long | |
1309 | xfs_file_ioctl( | |
df26cfe8 | 1310 | struct file *filp, |
df26cfe8 | 1311 | unsigned int cmd, |
4d4be482 | 1312 | unsigned long p) |
df26cfe8 LM |
1313 | { |
1314 | struct inode *inode = filp->f_path.dentry->d_inode; | |
4d4be482 CH |
1315 | struct xfs_inode *ip = XFS_I(inode); |
1316 | struct xfs_mount *mp = ip->i_mount; | |
1317 | void __user *arg = (void __user *)p; | |
1318 | int ioflags = 0; | |
df26cfe8 LM |
1319 | int error; |
1320 | ||
4d4be482 CH |
1321 | if (filp->f_mode & FMODE_NOCMTIME) |
1322 | ioflags |= IO_INVIS; | |
df26cfe8 | 1323 | |
4d4be482 CH |
1324 | xfs_itrace_entry(ip); |
1325 | ||
1326 | switch (cmd) { | |
df26cfe8 LM |
1327 | case XFS_IOC_ALLOCSP: |
1328 | case XFS_IOC_FREESP: | |
1329 | case XFS_IOC_RESVSP: | |
1330 | case XFS_IOC_UNRESVSP: | |
1331 | case XFS_IOC_ALLOCSP64: | |
1332 | case XFS_IOC_FREESP64: | |
1333 | case XFS_IOC_RESVSP64: | |
743bb465 | 1334 | case XFS_IOC_UNRESVSP64: { |
1335 | xfs_flock64_t bf; | |
df26cfe8 | 1336 | |
743bb465 | 1337 | if (copy_from_user(&bf, arg, sizeof(bf))) |
1338 | return -XFS_ERROR(EFAULT); | |
1339 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); | |
1340 | } | |
df26cfe8 LM |
1341 | case XFS_IOC_DIOINFO: { |
1342 | struct dioattr da; | |
1343 | xfs_buftarg_t *target = | |
1344 | XFS_IS_REALTIME_INODE(ip) ? | |
1345 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1346 | ||
1347 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; | |
1348 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); | |
1349 | ||
1350 | if (copy_to_user(arg, &da, sizeof(da))) | |
1351 | return -XFS_ERROR(EFAULT); | |
1352 | return 0; | |
1353 | } | |
1354 | ||
1355 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1356 | case XFS_IOC_FSBULKSTAT: | |
1357 | case XFS_IOC_FSINUMBERS: | |
1358 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1359 | ||
1360 | case XFS_IOC_FSGEOMETRY_V1: | |
1361 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1362 | ||
1363 | case XFS_IOC_FSGEOMETRY: | |
1364 | return xfs_ioc_fsgeometry(mp, arg); | |
1365 | ||
1366 | case XFS_IOC_GETVERSION: | |
1367 | return put_user(inode->i_generation, (int __user *)arg); | |
1368 | ||
1369 | case XFS_IOC_FSGETXATTR: | |
1370 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1371 | case XFS_IOC_FSGETXATTRA: | |
1372 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1373 | case XFS_IOC_FSSETXATTR: |
1374 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1375 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1376 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1377 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1378 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1379 | |
1380 | case XFS_IOC_FSSETDM: { | |
1381 | struct fsdmidata dmi; | |
1382 | ||
1383 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
1384 | return -XFS_ERROR(EFAULT); | |
1385 | ||
1386 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, | |
1387 | dmi.fsd_dmstate); | |
1388 | return -error; | |
1389 | } | |
1390 | ||
1391 | case XFS_IOC_GETBMAP: | |
1392 | case XFS_IOC_GETBMAPA: | |
1393 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1394 | ||
1395 | case XFS_IOC_GETBMAPX: | |
1396 | return xfs_ioc_getbmapx(ip, arg); | |
1397 | ||
1398 | case XFS_IOC_FD_TO_HANDLE: | |
1399 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1400 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1401 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1402 | |
743bb465 | 1403 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
1404 | return -XFS_ERROR(EFAULT); | |
1405 | return xfs_find_handle(cmd, &hreq); | |
1406 | } | |
1407 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1408 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1409 | |
743bb465 | 1410 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1411 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1412 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1413 | } |
df26cfe8 | 1414 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1415 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1416 | |
743bb465 | 1417 | case XFS_IOC_READLINK_BY_HANDLE: { |
1418 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1419 | |
743bb465 | 1420 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1421 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1422 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1423 | } |
df26cfe8 | 1424 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1425 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1426 | |
1427 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1428 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1429 | |
1430 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1431 | struct xfs_swapext sxp; |
1432 | ||
1433 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
1434 | return -XFS_ERROR(EFAULT); | |
1435 | error = xfs_swapext(&sxp); | |
df26cfe8 LM |
1436 | return -error; |
1437 | } | |
1438 | ||
1439 | case XFS_IOC_FSCOUNTS: { | |
1440 | xfs_fsop_counts_t out; | |
1441 | ||
1442 | error = xfs_fs_counts(mp, &out); | |
1443 | if (error) | |
1444 | return -error; | |
1445 | ||
1446 | if (copy_to_user(arg, &out, sizeof(out))) | |
1447 | return -XFS_ERROR(EFAULT); | |
1448 | return 0; | |
1449 | } | |
1450 | ||
1451 | case XFS_IOC_SET_RESBLKS: { | |
1452 | xfs_fsop_resblks_t inout; | |
1453 | __uint64_t in; | |
1454 | ||
1455 | if (!capable(CAP_SYS_ADMIN)) | |
1456 | return -EPERM; | |
1457 | ||
1458 | if (copy_from_user(&inout, arg, sizeof(inout))) | |
1459 | return -XFS_ERROR(EFAULT); | |
1460 | ||
1461 | /* input parameter is passed in resblks field of structure */ | |
1462 | in = inout.resblks; | |
1463 | error = xfs_reserve_blocks(mp, &in, &inout); | |
1464 | if (error) | |
1465 | return -error; | |
1466 | ||
1467 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
1468 | return -XFS_ERROR(EFAULT); | |
1469 | return 0; | |
1470 | } | |
1471 | ||
1472 | case XFS_IOC_GET_RESBLKS: { | |
1473 | xfs_fsop_resblks_t out; | |
1474 | ||
1475 | if (!capable(CAP_SYS_ADMIN)) | |
1476 | return -EPERM; | |
1477 | ||
1478 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1479 | if (error) | |
1480 | return -error; | |
1481 | ||
1482 | if (copy_to_user(arg, &out, sizeof(out))) | |
1483 | return -XFS_ERROR(EFAULT); | |
1484 | ||
1485 | return 0; | |
1486 | } | |
1487 | ||
1488 | case XFS_IOC_FSGROWFSDATA: { | |
1489 | xfs_growfs_data_t in; | |
1490 | ||
df26cfe8 LM |
1491 | if (copy_from_user(&in, arg, sizeof(in))) |
1492 | return -XFS_ERROR(EFAULT); | |
1493 | ||
1494 | error = xfs_growfs_data(mp, &in); | |
1495 | return -error; | |
1496 | } | |
1497 | ||
1498 | case XFS_IOC_FSGROWFSLOG: { | |
1499 | xfs_growfs_log_t in; | |
1500 | ||
df26cfe8 LM |
1501 | if (copy_from_user(&in, arg, sizeof(in))) |
1502 | return -XFS_ERROR(EFAULT); | |
1503 | ||
1504 | error = xfs_growfs_log(mp, &in); | |
1505 | return -error; | |
1506 | } | |
1507 | ||
1508 | case XFS_IOC_FSGROWFSRT: { | |
1509 | xfs_growfs_rt_t in; | |
1510 | ||
df26cfe8 LM |
1511 | if (copy_from_user(&in, arg, sizeof(in))) |
1512 | return -XFS_ERROR(EFAULT); | |
1513 | ||
1514 | error = xfs_growfs_rt(mp, &in); | |
1515 | return -error; | |
1516 | } | |
1517 | ||
df26cfe8 LM |
1518 | case XFS_IOC_GOINGDOWN: { |
1519 | __uint32_t in; | |
1520 | ||
1521 | if (!capable(CAP_SYS_ADMIN)) | |
1522 | return -EPERM; | |
1523 | ||
1524 | if (get_user(in, (__uint32_t __user *)arg)) | |
1525 | return -XFS_ERROR(EFAULT); | |
1526 | ||
1527 | error = xfs_fs_goingdown(mp, in); | |
1528 | return -error; | |
1529 | } | |
1530 | ||
1531 | case XFS_IOC_ERROR_INJECTION: { | |
1532 | xfs_error_injection_t in; | |
1533 | ||
1534 | if (!capable(CAP_SYS_ADMIN)) | |
1535 | return -EPERM; | |
1536 | ||
1537 | if (copy_from_user(&in, arg, sizeof(in))) | |
1538 | return -XFS_ERROR(EFAULT); | |
1539 | ||
1540 | error = xfs_errortag_add(in.errtag, mp); | |
1541 | return -error; | |
1542 | } | |
1543 | ||
1544 | case XFS_IOC_ERROR_CLEARALL: | |
1545 | if (!capable(CAP_SYS_ADMIN)) | |
1546 | return -EPERM; | |
1547 | ||
1548 | error = xfs_errortag_clearall(mp, 1); | |
1549 | return -error; | |
1550 | ||
1551 | default: | |
1552 | return -ENOTTY; | |
1553 | } | |
1554 | } |