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 | 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" | |
7bf446f8 | 37 | #include "xfs_ioctl.h" |
a844f451 NS |
38 | #include "xfs_btree.h" |
39 | #include "xfs_ialloc.h" | |
1da177e4 | 40 | #include "xfs_rtalloc.h" |
1da177e4 | 41 | #include "xfs_itable.h" |
a844f451 | 42 | #include "xfs_error.h" |
1da177e4 | 43 | #include "xfs_rw.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" |
0b1b213f | 54 | #include "xfs_trace.h" |
1da177e4 | 55 | |
16f7e0fe | 56 | #include <linux/capability.h> |
1da177e4 LT |
57 | #include <linux/dcache.h> |
58 | #include <linux/mount.h> | |
59 | #include <linux/namei.h> | |
60 | #include <linux/pagemap.h> | |
5a0e3ad6 | 61 | #include <linux/slab.h> |
d296d30a | 62 | #include <linux/exportfs.h> |
1da177e4 LT |
63 | |
64 | /* | |
65 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
66 | * a file or fs handle. | |
67 | * | |
68 | * XFS_IOC_PATH_TO_FSHANDLE | |
69 | * returns fs handle for a mount point or path within that mount point | |
70 | * XFS_IOC_FD_TO_HANDLE | |
71 | * returns full handle for a FD opened in user space | |
72 | * XFS_IOC_PATH_TO_HANDLE | |
73 | * returns full handle for a path | |
74 | */ | |
d5547f9f | 75 | int |
1da177e4 LT |
76 | xfs_find_handle( |
77 | unsigned int cmd, | |
743bb465 | 78 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
79 | { |
80 | int hsize; | |
81 | xfs_handle_t handle; | |
1da177e4 | 82 | struct inode *inode; |
4346cdd4 CH |
83 | struct file *file = NULL; |
84 | struct path path; | |
85 | int error; | |
86 | struct xfs_inode *ip; | |
1da177e4 | 87 | |
4346cdd4 | 88 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
743bb465 | 89 | file = fget(hreq->fd); |
1da177e4 | 90 | if (!file) |
4346cdd4 CH |
91 | return -EBADF; |
92 | inode = file->f_path.dentry->d_inode; | |
93 | } else { | |
94 | error = user_lpath((const char __user *)hreq->path, &path); | |
95 | if (error) | |
96 | return error; | |
97 | inode = path.dentry->d_inode; | |
1da177e4 | 98 | } |
4346cdd4 CH |
99 | ip = XFS_I(inode); |
100 | ||
101 | /* | |
102 | * We can only generate handles for inodes residing on a XFS filesystem, | |
103 | * and only for regular files, directories or symbolic links. | |
104 | */ | |
105 | error = -EINVAL; | |
106 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
107 | goto out_put; | |
108 | ||
109 | error = -EBADF; | |
110 | if (!S_ISREG(inode->i_mode) && | |
111 | !S_ISDIR(inode->i_mode) && | |
112 | !S_ISLNK(inode->i_mode)) | |
113 | goto out_put; | |
114 | ||
115 | ||
116 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
117 | ||
118 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
119 | /* | |
120 | * This handle only contains an fsid, zero the rest. | |
121 | */ | |
122 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
123 | hsize = sizeof(xfs_fsid_t); | |
124 | } else { | |
1da177e4 LT |
125 | int lock_mode; |
126 | ||
1da177e4 | 127 | lock_mode = xfs_ilock_map_shared(ip); |
c6143911 CH |
128 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
129 | sizeof(handle.ha_fid.fid_len); | |
130 | handle.ha_fid.fid_pad = 0; | |
131 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
132 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
133 | xfs_iunlock_map_shared(ip, lock_mode); |
134 | ||
135 | hsize = XFS_HSIZE(handle); | |
136 | } | |
137 | ||
4346cdd4 | 138 | error = -EFAULT; |
743bb465 | 139 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
140 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
141 | goto out_put; | |
1da177e4 | 142 | |
4346cdd4 CH |
143 | error = 0; |
144 | ||
145 | out_put: | |
146 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
147 | fput(file); | |
148 | else | |
149 | path_put(&path); | |
150 | return error; | |
1da177e4 LT |
151 | } |
152 | ||
1da177e4 | 153 | /* |
d296d30a CH |
154 | * No need to do permission checks on the various pathname components |
155 | * as the handle operations are privileged. | |
1da177e4 LT |
156 | */ |
157 | STATIC int | |
d296d30a CH |
158 | xfs_handle_acceptable( |
159 | void *context, | |
160 | struct dentry *dentry) | |
161 | { | |
162 | return 1; | |
163 | } | |
164 | ||
165 | /* | |
166 | * Convert userspace handle data into a dentry. | |
167 | */ | |
168 | struct dentry * | |
169 | xfs_handle_to_dentry( | |
170 | struct file *parfilp, | |
171 | void __user *uhandle, | |
172 | u32 hlen) | |
1da177e4 | 173 | { |
1da177e4 | 174 | xfs_handle_t handle; |
d296d30a | 175 | struct xfs_fid64 fid; |
1da177e4 LT |
176 | |
177 | /* | |
178 | * Only allow handle opens under a directory. | |
179 | */ | |
d296d30a CH |
180 | if (!S_ISDIR(parfilp->f_path.dentry->d_inode->i_mode)) |
181 | return ERR_PTR(-ENOTDIR); | |
182 | ||
183 | if (hlen != sizeof(xfs_handle_t)) | |
184 | return ERR_PTR(-EINVAL); | |
185 | if (copy_from_user(&handle, uhandle, hlen)) | |
186 | return ERR_PTR(-EFAULT); | |
187 | if (handle.ha_fid.fid_len != | |
188 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
189 | return ERR_PTR(-EINVAL); | |
190 | ||
191 | memset(&fid, 0, sizeof(struct fid)); | |
192 | fid.ino = handle.ha_fid.fid_ino; | |
193 | fid.gen = handle.ha_fid.fid_gen; | |
194 | ||
195 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
196 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
197 | xfs_handle_acceptable, NULL); | |
198 | } | |
1da177e4 | 199 | |
d296d30a CH |
200 | STATIC struct dentry * |
201 | xfs_handlereq_to_dentry( | |
202 | struct file *parfilp, | |
203 | xfs_fsop_handlereq_t *hreq) | |
204 | { | |
205 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
206 | } |
207 | ||
d5547f9f | 208 | int |
1da177e4 | 209 | xfs_open_by_handle( |
1da177e4 | 210 | struct file *parfilp, |
d296d30a | 211 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 212 | { |
745ca247 | 213 | const struct cred *cred = current_cred(); |
1da177e4 | 214 | int error; |
d296d30a | 215 | int fd; |
1da177e4 LT |
216 | int permflag; |
217 | struct file *filp; | |
218 | struct inode *inode; | |
219 | struct dentry *dentry; | |
1da177e4 LT |
220 | |
221 | if (!capable(CAP_SYS_ADMIN)) | |
222 | return -XFS_ERROR(EPERM); | |
1da177e4 | 223 | |
d296d30a CH |
224 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
225 | if (IS_ERR(dentry)) | |
226 | return PTR_ERR(dentry); | |
227 | inode = dentry->d_inode; | |
1da177e4 LT |
228 | |
229 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
230 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
d296d30a CH |
231 | error = -XFS_ERROR(EPERM); |
232 | goto out_dput; | |
1da177e4 LT |
233 | } |
234 | ||
235 | #if BITS_PER_LONG != 32 | |
743bb465 | 236 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 237 | #endif |
d296d30a | 238 | |
1da177e4 | 239 | /* Put open permission in namei format. */ |
743bb465 | 240 | permflag = hreq->oflags; |
1da177e4 LT |
241 | if ((permflag+1) & O_ACCMODE) |
242 | permflag++; | |
243 | if (permflag & O_TRUNC) | |
244 | permflag |= 2; | |
245 | ||
246 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && | |
247 | (permflag & FMODE_WRITE) && IS_APPEND(inode)) { | |
d296d30a CH |
248 | error = -XFS_ERROR(EPERM); |
249 | goto out_dput; | |
1da177e4 LT |
250 | } |
251 | ||
252 | if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) { | |
d296d30a CH |
253 | error = -XFS_ERROR(EACCES); |
254 | goto out_dput; | |
1da177e4 LT |
255 | } |
256 | ||
257 | /* Can't write directories. */ | |
d296d30a CH |
258 | if (S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) { |
259 | error = -XFS_ERROR(EISDIR); | |
260 | goto out_dput; | |
1da177e4 LT |
261 | } |
262 | ||
d296d30a CH |
263 | fd = get_unused_fd(); |
264 | if (fd < 0) { | |
265 | error = fd; | |
266 | goto out_dput; | |
1da177e4 LT |
267 | } |
268 | ||
d296d30a CH |
269 | filp = dentry_open(dentry, mntget(parfilp->f_path.mnt), |
270 | hreq->oflags, cred); | |
1da177e4 | 271 | if (IS_ERR(filp)) { |
d296d30a CH |
272 | put_unused_fd(fd); |
273 | return PTR_ERR(filp); | |
1da177e4 | 274 | } |
4d4be482 | 275 | |
2e2e7bb1 | 276 | if (inode->i_mode & S_IFREG) { |
2e2e7bb1 | 277 | filp->f_flags |= O_NOATIME; |
4d4be482 | 278 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 279 | } |
1da177e4 | 280 | |
d296d30a CH |
281 | fd_install(fd, filp); |
282 | return fd; | |
283 | ||
284 | out_dput: | |
285 | dput(dentry); | |
286 | return error; | |
1da177e4 LT |
287 | } |
288 | ||
804c83c3 CH |
289 | /* |
290 | * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's | |
291 | * unused first argument. | |
292 | */ | |
293 | STATIC int | |
294 | do_readlink( | |
295 | char __user *buffer, | |
296 | int buflen, | |
297 | const char *link) | |
298 | { | |
299 | int len; | |
300 | ||
301 | len = PTR_ERR(link); | |
302 | if (IS_ERR(link)) | |
303 | goto out; | |
304 | ||
305 | len = strlen(link); | |
306 | if (len > (unsigned) buflen) | |
307 | len = buflen; | |
308 | if (copy_to_user(buffer, link, len)) | |
309 | len = -EFAULT; | |
310 | out: | |
311 | return len; | |
312 | } | |
313 | ||
314 | ||
d5547f9f | 315 | int |
1da177e4 | 316 | xfs_readlink_by_handle( |
d296d30a CH |
317 | struct file *parfilp, |
318 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 319 | { |
d296d30a | 320 | struct dentry *dentry; |
1da177e4 | 321 | __u32 olen; |
804c83c3 CH |
322 | void *link; |
323 | int error; | |
1da177e4 LT |
324 | |
325 | if (!capable(CAP_SYS_ADMIN)) | |
326 | return -XFS_ERROR(EPERM); | |
1da177e4 | 327 | |
d296d30a CH |
328 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
329 | if (IS_ERR(dentry)) | |
330 | return PTR_ERR(dentry); | |
1da177e4 LT |
331 | |
332 | /* Restrict this handle operation to symlinks only. */ | |
d296d30a | 333 | if (!S_ISLNK(dentry->d_inode->i_mode)) { |
804c83c3 | 334 | error = -XFS_ERROR(EINVAL); |
d296d30a | 335 | goto out_dput; |
1da177e4 LT |
336 | } |
337 | ||
743bb465 | 338 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
804c83c3 | 339 | error = -XFS_ERROR(EFAULT); |
d296d30a | 340 | goto out_dput; |
1da177e4 | 341 | } |
1da177e4 | 342 | |
804c83c3 | 343 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
d296d30a CH |
344 | if (!link) { |
345 | error = -XFS_ERROR(ENOMEM); | |
346 | goto out_dput; | |
347 | } | |
1da177e4 | 348 | |
d296d30a | 349 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
67fcaa73 | 350 | if (error) |
804c83c3 | 351 | goto out_kfree; |
743bb465 | 352 | error = do_readlink(hreq->ohandle, olen, link); |
804c83c3 CH |
353 | if (error) |
354 | goto out_kfree; | |
67fcaa73 | 355 | |
804c83c3 CH |
356 | out_kfree: |
357 | kfree(link); | |
d296d30a CH |
358 | out_dput: |
359 | dput(dentry); | |
804c83c3 | 360 | return error; |
1da177e4 LT |
361 | } |
362 | ||
363 | STATIC int | |
364 | xfs_fssetdm_by_handle( | |
d296d30a CH |
365 | struct file *parfilp, |
366 | void __user *arg) | |
1da177e4 LT |
367 | { |
368 | int error; | |
369 | struct fsdmidata fsd; | |
370 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 371 | struct dentry *dentry; |
1da177e4 LT |
372 | |
373 | if (!capable(CAP_MKNOD)) | |
374 | return -XFS_ERROR(EPERM); | |
375 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
376 | return -XFS_ERROR(EFAULT); | |
377 | ||
d296d30a CH |
378 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
379 | if (IS_ERR(dentry)) | |
380 | return PTR_ERR(dentry); | |
1da177e4 | 381 | |
d296d30a | 382 | if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { |
6e7f75ea CH |
383 | error = -XFS_ERROR(EPERM); |
384 | goto out; | |
1da177e4 LT |
385 | } |
386 | ||
387 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
6e7f75ea CH |
388 | error = -XFS_ERROR(EFAULT); |
389 | goto out; | |
1da177e4 LT |
390 | } |
391 | ||
d296d30a | 392 | error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, |
6e7f75ea | 393 | fsd.fsd_dmstate); |
1da177e4 | 394 | |
6e7f75ea | 395 | out: |
d296d30a | 396 | dput(dentry); |
6e7f75ea | 397 | return error; |
1da177e4 LT |
398 | } |
399 | ||
400 | STATIC int | |
401 | xfs_attrlist_by_handle( | |
d296d30a CH |
402 | struct file *parfilp, |
403 | void __user *arg) | |
1da177e4 | 404 | { |
d296d30a | 405 | int error = -ENOMEM; |
1da177e4 LT |
406 | attrlist_cursor_kern_t *cursor; |
407 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
d296d30a | 408 | struct dentry *dentry; |
1da177e4 LT |
409 | char *kbuf; |
410 | ||
411 | if (!capable(CAP_SYS_ADMIN)) | |
412 | return -XFS_ERROR(EPERM); | |
413 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
414 | return -XFS_ERROR(EFAULT); | |
415 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
416 | return -XFS_ERROR(EINVAL); | |
417 | ||
90ad58a8 CH |
418 | /* |
419 | * Reject flags, only allow namespaces. | |
420 | */ | |
421 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
422 | return -XFS_ERROR(EINVAL); | |
423 | ||
d296d30a CH |
424 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
425 | if (IS_ERR(dentry)) | |
426 | return PTR_ERR(dentry); | |
1da177e4 LT |
427 | |
428 | kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL); | |
429 | if (!kbuf) | |
d296d30a | 430 | goto out_dput; |
1da177e4 LT |
431 | |
432 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
d296d30a | 433 | error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, |
739bfb2a | 434 | al_hreq.flags, cursor); |
1da177e4 LT |
435 | if (error) |
436 | goto out_kfree; | |
437 | ||
438 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
439 | error = -EFAULT; | |
440 | ||
441 | out_kfree: | |
442 | kfree(kbuf); | |
d296d30a CH |
443 | out_dput: |
444 | dput(dentry); | |
445 | return error; | |
1da177e4 LT |
446 | } |
447 | ||
28750975 | 448 | int |
1da177e4 | 449 | xfs_attrmulti_attr_get( |
739bfb2a | 450 | struct inode *inode, |
a9273ca5 DC |
451 | unsigned char *name, |
452 | unsigned char __user *ubuf, | |
1da177e4 LT |
453 | __uint32_t *len, |
454 | __uint32_t flags) | |
455 | { | |
a9273ca5 | 456 | unsigned char *kbuf; |
1da177e4 | 457 | int error = EFAULT; |
e8b0ebaa | 458 | |
1da177e4 LT |
459 | if (*len > XATTR_SIZE_MAX) |
460 | return EINVAL; | |
461 | kbuf = kmalloc(*len, GFP_KERNEL); | |
462 | if (!kbuf) | |
463 | return ENOMEM; | |
464 | ||
e8b0ebaa | 465 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
466 | if (error) |
467 | goto out_kfree; | |
468 | ||
469 | if (copy_to_user(ubuf, kbuf, *len)) | |
470 | error = EFAULT; | |
471 | ||
472 | out_kfree: | |
473 | kfree(kbuf); | |
474 | return error; | |
475 | } | |
476 | ||
28750975 | 477 | int |
1da177e4 | 478 | xfs_attrmulti_attr_set( |
739bfb2a | 479 | struct inode *inode, |
a9273ca5 DC |
480 | unsigned char *name, |
481 | const unsigned char __user *ubuf, | |
1da177e4 LT |
482 | __uint32_t len, |
483 | __uint32_t flags) | |
484 | { | |
a9273ca5 | 485 | unsigned char *kbuf; |
1da177e4 LT |
486 | int error = EFAULT; |
487 | ||
739bfb2a | 488 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
489 | return EPERM; |
490 | if (len > XATTR_SIZE_MAX) | |
491 | return EINVAL; | |
492 | ||
0e639bde LZ |
493 | kbuf = memdup_user(ubuf, len); |
494 | if (IS_ERR(kbuf)) | |
495 | return PTR_ERR(kbuf); | |
e8b0ebaa | 496 | |
739bfb2a | 497 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 | 498 | |
1da177e4 LT |
499 | return error; |
500 | } | |
501 | ||
28750975 | 502 | int |
1da177e4 | 503 | xfs_attrmulti_attr_remove( |
739bfb2a | 504 | struct inode *inode, |
a9273ca5 | 505 | unsigned char *name, |
1da177e4 LT |
506 | __uint32_t flags) |
507 | { | |
739bfb2a | 508 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 509 | return EPERM; |
739bfb2a | 510 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
511 | } |
512 | ||
513 | STATIC int | |
514 | xfs_attrmulti_by_handle( | |
42a74f20 | 515 | struct file *parfilp, |
d296d30a | 516 | void __user *arg) |
1da177e4 LT |
517 | { |
518 | int error; | |
519 | xfs_attr_multiop_t *ops; | |
520 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 521 | struct dentry *dentry; |
1da177e4 | 522 | unsigned int i, size; |
a9273ca5 | 523 | unsigned char *attr_name; |
1da177e4 LT |
524 | |
525 | if (!capable(CAP_SYS_ADMIN)) | |
526 | return -XFS_ERROR(EPERM); | |
527 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
528 | return -XFS_ERROR(EFAULT); | |
529 | ||
d296d30a CH |
530 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
531 | if (IS_ERR(dentry)) | |
532 | return PTR_ERR(dentry); | |
1da177e4 LT |
533 | |
534 | error = E2BIG; | |
e182f57a | 535 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 536 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 537 | goto out_dput; |
1da177e4 | 538 | |
0e639bde LZ |
539 | ops = memdup_user(am_hreq.ops, size); |
540 | if (IS_ERR(ops)) { | |
541 | error = PTR_ERR(ops); | |
d296d30a | 542 | goto out_dput; |
0e639bde | 543 | } |
1da177e4 LT |
544 | |
545 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
546 | if (!attr_name) | |
547 | goto out_kfree_ops; | |
548 | ||
1da177e4 LT |
549 | error = 0; |
550 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 551 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
552 | ops[i].am_attrname, MAXNAMELEN); |
553 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
554 | error = -ERANGE; | |
555 | if (ops[i].am_error < 0) | |
556 | break; | |
557 | ||
558 | switch (ops[i].am_opcode) { | |
559 | case ATTR_OP_GET: | |
d296d30a CH |
560 | ops[i].am_error = xfs_attrmulti_attr_get( |
561 | dentry->d_inode, attr_name, | |
562 | ops[i].am_attrvalue, &ops[i].am_length, | |
563 | ops[i].am_flags); | |
1da177e4 LT |
564 | break; |
565 | case ATTR_OP_SET: | |
42a74f20 DH |
566 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
567 | if (ops[i].am_error) | |
568 | break; | |
d296d30a CH |
569 | ops[i].am_error = xfs_attrmulti_attr_set( |
570 | dentry->d_inode, attr_name, | |
571 | ops[i].am_attrvalue, ops[i].am_length, | |
572 | ops[i].am_flags); | |
42a74f20 | 573 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
574 | break; |
575 | case ATTR_OP_REMOVE: | |
42a74f20 DH |
576 | ops[i].am_error = mnt_want_write(parfilp->f_path.mnt); |
577 | if (ops[i].am_error) | |
578 | break; | |
d296d30a CH |
579 | ops[i].am_error = xfs_attrmulti_attr_remove( |
580 | dentry->d_inode, attr_name, | |
581 | ops[i].am_flags); | |
42a74f20 | 582 | mnt_drop_write(parfilp->f_path.mnt); |
1da177e4 LT |
583 | break; |
584 | default: | |
585 | ops[i].am_error = EINVAL; | |
586 | } | |
587 | } | |
588 | ||
589 | if (copy_to_user(am_hreq.ops, ops, size)) | |
590 | error = XFS_ERROR(EFAULT); | |
591 | ||
592 | kfree(attr_name); | |
593 | out_kfree_ops: | |
594 | kfree(ops); | |
d296d30a CH |
595 | out_dput: |
596 | dput(dentry); | |
1da177e4 LT |
597 | return -error; |
598 | } | |
599 | ||
d5547f9f | 600 | int |
1da177e4 | 601 | xfs_ioc_space( |
993386c1 | 602 | struct xfs_inode *ip, |
f37ea149 | 603 | struct inode *inode, |
1da177e4 LT |
604 | struct file *filp, |
605 | int ioflags, | |
606 | unsigned int cmd, | |
743bb465 | 607 | xfs_flock64_t *bf) |
1da177e4 | 608 | { |
1da177e4 LT |
609 | int attr_flags = 0; |
610 | int error; | |
611 | ||
743bb465 | 612 | /* |
613 | * Only allow the sys admin to reserve space unless | |
614 | * unwritten extents are enabled. | |
615 | */ | |
616 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
617 | !capable(CAP_SYS_ADMIN)) | |
618 | return -XFS_ERROR(EPERM); | |
619 | ||
f37ea149 | 620 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
621 | return -XFS_ERROR(EPERM); |
622 | ||
ad4a8ac4 | 623 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
624 | return -XFS_ERROR(EBADF); |
625 | ||
f37ea149 | 626 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
627 | return -XFS_ERROR(EINVAL); |
628 | ||
1da177e4 | 629 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
0f285c8a | 630 | attr_flags |= XFS_ATTR_NONBLOCK; |
1da177e4 | 631 | if (ioflags & IO_INVIS) |
0f285c8a | 632 | attr_flags |= XFS_ATTR_DMI; |
1da177e4 | 633 | |
743bb465 | 634 | error = xfs_change_file_space(ip, cmd, bf, filp->f_pos, attr_flags); |
1da177e4 LT |
635 | return -error; |
636 | } | |
637 | ||
638 | STATIC int | |
639 | xfs_ioc_bulkstat( | |
640 | xfs_mount_t *mp, | |
641 | unsigned int cmd, | |
642 | void __user *arg) | |
643 | { | |
644 | xfs_fsop_bulkreq_t bulkreq; | |
645 | int count; /* # of records returned */ | |
646 | xfs_ino_t inlast; /* last inode number */ | |
647 | int done; | |
648 | int error; | |
649 | ||
650 | /* done = 1 if there are more stats to get and if bulkstat */ | |
651 | /* should be called again (unused here, but used in dmapi) */ | |
652 | ||
653 | if (!capable(CAP_SYS_ADMIN)) | |
654 | return -EPERM; | |
655 | ||
656 | if (XFS_FORCED_SHUTDOWN(mp)) | |
657 | return -XFS_ERROR(EIO); | |
658 | ||
659 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
660 | return -XFS_ERROR(EFAULT); | |
661 | ||
662 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
663 | return -XFS_ERROR(EFAULT); | |
664 | ||
665 | if ((count = bulkreq.icount) <= 0) | |
666 | return -XFS_ERROR(EINVAL); | |
667 | ||
cd57e594 LM |
668 | if (bulkreq.ubuffer == NULL) |
669 | return -XFS_ERROR(EINVAL); | |
670 | ||
1da177e4 LT |
671 | if (cmd == XFS_IOC_FSINUMBERS) |
672 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 673 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 LT |
674 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
675 | error = xfs_bulkstat_single(mp, &inlast, | |
676 | bulkreq.ubuffer, &done); | |
cd57e594 LM |
677 | else /* XFS_IOC_FSBULKSTAT */ |
678 | error = xfs_bulkstat(mp, &inlast, &count, | |
679 | (bulkstat_one_pf)xfs_bulkstat_one, NULL, | |
680 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
681 | BULKSTAT_FG_QUICK, &done); | |
1da177e4 LT |
682 | |
683 | if (error) | |
684 | return -error; | |
685 | ||
686 | if (bulkreq.ocount != NULL) { | |
687 | if (copy_to_user(bulkreq.lastip, &inlast, | |
688 | sizeof(xfs_ino_t))) | |
689 | return -XFS_ERROR(EFAULT); | |
690 | ||
691 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
692 | return -XFS_ERROR(EFAULT); | |
693 | } | |
694 | ||
695 | return 0; | |
696 | } | |
697 | ||
698 | STATIC int | |
699 | xfs_ioc_fsgeometry_v1( | |
700 | xfs_mount_t *mp, | |
701 | void __user *arg) | |
702 | { | |
703 | xfs_fsop_geom_v1_t fsgeo; | |
704 | int error; | |
705 | ||
706 | error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3); | |
707 | if (error) | |
708 | return -error; | |
709 | ||
710 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
711 | return -XFS_ERROR(EFAULT); | |
712 | return 0; | |
713 | } | |
714 | ||
715 | STATIC int | |
716 | xfs_ioc_fsgeometry( | |
717 | xfs_mount_t *mp, | |
718 | void __user *arg) | |
719 | { | |
720 | xfs_fsop_geom_t fsgeo; | |
721 | int error; | |
722 | ||
723 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
724 | if (error) | |
725 | return -error; | |
726 | ||
727 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
728 | return -XFS_ERROR(EFAULT); | |
729 | return 0; | |
730 | } | |
731 | ||
732 | /* | |
733 | * Linux extended inode flags interface. | |
734 | */ | |
1da177e4 LT |
735 | |
736 | STATIC unsigned int | |
737 | xfs_merge_ioc_xflags( | |
738 | unsigned int flags, | |
739 | unsigned int start) | |
740 | { | |
741 | unsigned int xflags = start; | |
742 | ||
39058a0e | 743 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
744 | xflags |= XFS_XFLAG_IMMUTABLE; |
745 | else | |
746 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 747 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
748 | xflags |= XFS_XFLAG_APPEND; |
749 | else | |
750 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 751 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
752 | xflags |= XFS_XFLAG_SYNC; |
753 | else | |
754 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 755 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
756 | xflags |= XFS_XFLAG_NOATIME; |
757 | else | |
758 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 759 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
760 | xflags |= XFS_XFLAG_NODUMP; |
761 | else | |
762 | xflags &= ~XFS_XFLAG_NODUMP; | |
763 | ||
764 | return xflags; | |
765 | } | |
766 | ||
767 | STATIC unsigned int | |
768 | xfs_di2lxflags( | |
769 | __uint16_t di_flags) | |
770 | { | |
771 | unsigned int flags = 0; | |
772 | ||
773 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 774 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 775 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 776 | flags |= FS_APPEND_FL; |
1da177e4 | 777 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 778 | flags |= FS_SYNC_FL; |
1da177e4 | 779 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 780 | flags |= FS_NOATIME_FL; |
1da177e4 | 781 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 782 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
783 | return flags; |
784 | } | |
785 | ||
c83bfab1 CH |
786 | STATIC int |
787 | xfs_ioc_fsgetxattr( | |
788 | xfs_inode_t *ip, | |
789 | int attr, | |
790 | void __user *arg) | |
791 | { | |
792 | struct fsxattr fa; | |
793 | ||
794 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
795 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
796 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
797 | fa.fsx_projid = ip->i_d.di_projid; | |
798 | ||
799 | if (attr) { | |
800 | if (ip->i_afp) { | |
801 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
802 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
803 | sizeof(xfs_bmbt_rec_t); | |
804 | else | |
805 | fa.fsx_nextents = ip->i_d.di_anextents; | |
806 | } else | |
807 | fa.fsx_nextents = 0; | |
808 | } else { | |
809 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
810 | fa.fsx_nextents = ip->i_df.if_bytes / | |
811 | sizeof(xfs_bmbt_rec_t); | |
812 | else | |
813 | fa.fsx_nextents = ip->i_d.di_nextents; | |
814 | } | |
815 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
816 | ||
817 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
818 | return -EFAULT; | |
819 | return 0; | |
820 | } | |
821 | ||
25fe55e8 CH |
822 | STATIC void |
823 | xfs_set_diflags( | |
824 | struct xfs_inode *ip, | |
825 | unsigned int xflags) | |
826 | { | |
827 | unsigned int di_flags; | |
828 | ||
829 | /* can't set PREALLOC this way, just preserve it */ | |
830 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
831 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
832 | di_flags |= XFS_DIFLAG_IMMUTABLE; | |
833 | if (xflags & XFS_XFLAG_APPEND) | |
834 | di_flags |= XFS_DIFLAG_APPEND; | |
835 | if (xflags & XFS_XFLAG_SYNC) | |
836 | di_flags |= XFS_DIFLAG_SYNC; | |
837 | if (xflags & XFS_XFLAG_NOATIME) | |
838 | di_flags |= XFS_DIFLAG_NOATIME; | |
839 | if (xflags & XFS_XFLAG_NODUMP) | |
840 | di_flags |= XFS_DIFLAG_NODUMP; | |
841 | if (xflags & XFS_XFLAG_PROJINHERIT) | |
842 | di_flags |= XFS_DIFLAG_PROJINHERIT; | |
843 | if (xflags & XFS_XFLAG_NODEFRAG) | |
844 | di_flags |= XFS_DIFLAG_NODEFRAG; | |
845 | if (xflags & XFS_XFLAG_FILESTREAM) | |
846 | di_flags |= XFS_DIFLAG_FILESTREAM; | |
847 | if ((ip->i_d.di_mode & S_IFMT) == S_IFDIR) { | |
848 | if (xflags & XFS_XFLAG_RTINHERIT) | |
849 | di_flags |= XFS_DIFLAG_RTINHERIT; | |
850 | if (xflags & XFS_XFLAG_NOSYMLINKS) | |
851 | di_flags |= XFS_DIFLAG_NOSYMLINKS; | |
852 | if (xflags & XFS_XFLAG_EXTSZINHERIT) | |
853 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; | |
854 | } else if ((ip->i_d.di_mode & S_IFMT) == S_IFREG) { | |
855 | if (xflags & XFS_XFLAG_REALTIME) | |
856 | di_flags |= XFS_DIFLAG_REALTIME; | |
857 | if (xflags & XFS_XFLAG_EXTSIZE) | |
858 | di_flags |= XFS_DIFLAG_EXTSIZE; | |
859 | } | |
860 | ||
861 | ip->i_d.di_flags = di_flags; | |
862 | } | |
863 | ||
f13fae2d CH |
864 | STATIC void |
865 | xfs_diflags_to_linux( | |
866 | struct xfs_inode *ip) | |
867 | { | |
e4f75291 | 868 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
869 | unsigned int xflags = xfs_ip2xflags(ip); |
870 | ||
871 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
872 | inode->i_flags |= S_IMMUTABLE; | |
873 | else | |
874 | inode->i_flags &= ~S_IMMUTABLE; | |
875 | if (xflags & XFS_XFLAG_APPEND) | |
876 | inode->i_flags |= S_APPEND; | |
877 | else | |
878 | inode->i_flags &= ~S_APPEND; | |
879 | if (xflags & XFS_XFLAG_SYNC) | |
880 | inode->i_flags |= S_SYNC; | |
881 | else | |
882 | inode->i_flags &= ~S_SYNC; | |
883 | if (xflags & XFS_XFLAG_NOATIME) | |
884 | inode->i_flags |= S_NOATIME; | |
885 | else | |
886 | inode->i_flags &= ~S_NOATIME; | |
887 | } | |
25fe55e8 CH |
888 | |
889 | #define FSX_PROJID 1 | |
890 | #define FSX_EXTSIZE 2 | |
891 | #define FSX_XFLAGS 4 | |
892 | #define FSX_NONBLOCK 8 | |
893 | ||
894 | STATIC int | |
895 | xfs_ioctl_setattr( | |
896 | xfs_inode_t *ip, | |
897 | struct fsxattr *fa, | |
898 | int mask) | |
899 | { | |
900 | struct xfs_mount *mp = ip->i_mount; | |
901 | struct xfs_trans *tp; | |
902 | unsigned int lock_flags = 0; | |
7d095257 CH |
903 | struct xfs_dquot *udqp = NULL; |
904 | struct xfs_dquot *gdqp = NULL; | |
25fe55e8 CH |
905 | struct xfs_dquot *olddquot = NULL; |
906 | int code; | |
907 | ||
908 | xfs_itrace_entry(ip); | |
909 | ||
910 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
911 | return XFS_ERROR(EROFS); | |
912 | if (XFS_FORCED_SHUTDOWN(mp)) | |
913 | return XFS_ERROR(EIO); | |
914 | ||
915 | /* | |
916 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
917 | * before we start any other transactions. Trying to do this later | |
918 | * is messy. We don't care to take a readlock to look at the ids | |
919 | * in inode here, because we can't hold it across the trans_reserve. | |
920 | * If the IDs do change before we take the ilock, we're covered | |
921 | * because the i_*dquot fields will get updated anyway. | |
922 | */ | |
923 | if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { | |
7d095257 | 924 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
25fe55e8 CH |
925 | ip->i_d.di_gid, fa->fsx_projid, |
926 | XFS_QMOPT_PQUOTA, &udqp, &gdqp); | |
927 | if (code) | |
928 | return code; | |
929 | } | |
930 | ||
931 | /* | |
932 | * For the other attributes, we acquire the inode lock and | |
933 | * first do an error checking pass. | |
934 | */ | |
935 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
936 | code = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); | |
937 | if (code) | |
938 | goto error_return; | |
939 | ||
940 | lock_flags = XFS_ILOCK_EXCL; | |
941 | xfs_ilock(ip, lock_flags); | |
942 | ||
943 | /* | |
944 | * CAP_FOWNER overrides the following restrictions: | |
945 | * | |
946 | * The user ID of the calling process must be equal | |
947 | * to the file owner ID, except in cases where the | |
948 | * CAP_FSETID capability is applicable. | |
949 | */ | |
91b77712 | 950 | if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) { |
25fe55e8 CH |
951 | code = XFS_ERROR(EPERM); |
952 | goto error_return; | |
953 | } | |
954 | ||
955 | /* | |
956 | * Do a quota reservation only if projid is actually going to change. | |
957 | */ | |
958 | if (mask & FSX_PROJID) { | |
7d095257 CH |
959 | if (XFS_IS_QUOTA_RUNNING(mp) && |
960 | XFS_IS_PQUOTA_ON(mp) && | |
25fe55e8 CH |
961 | ip->i_d.di_projid != fa->fsx_projid) { |
962 | ASSERT(tp); | |
7d095257 | 963 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, |
25fe55e8 CH |
964 | capable(CAP_FOWNER) ? |
965 | XFS_QMOPT_FORCE_RES : 0); | |
966 | if (code) /* out of quota */ | |
967 | goto error_return; | |
968 | } | |
969 | } | |
970 | ||
971 | if (mask & FSX_EXTSIZE) { | |
972 | /* | |
973 | * Can't change extent size if any extents are allocated. | |
974 | */ | |
975 | if (ip->i_d.di_nextents && | |
976 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != | |
977 | fa->fsx_extsize)) { | |
978 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
979 | goto error_return; | |
980 | } | |
981 | ||
982 | /* | |
983 | * Extent size must be a multiple of the appropriate block | |
984 | * size, if set at all. | |
985 | */ | |
986 | if (fa->fsx_extsize != 0) { | |
987 | xfs_extlen_t size; | |
988 | ||
989 | if (XFS_IS_REALTIME_INODE(ip) || | |
990 | ((mask & FSX_XFLAGS) && | |
991 | (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { | |
992 | size = mp->m_sb.sb_rextsize << | |
993 | mp->m_sb.sb_blocklog; | |
994 | } else { | |
995 | size = mp->m_sb.sb_blocksize; | |
996 | } | |
997 | ||
998 | if (fa->fsx_extsize % size) { | |
999 | code = XFS_ERROR(EINVAL); | |
1000 | goto error_return; | |
1001 | } | |
1002 | } | |
1003 | } | |
1004 | ||
1005 | ||
1006 | if (mask & FSX_XFLAGS) { | |
1007 | /* | |
1008 | * Can't change realtime flag if any extents are allocated. | |
1009 | */ | |
1010 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
1011 | (XFS_IS_REALTIME_INODE(ip)) != | |
1012 | (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1013 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1014 | goto error_return; | |
1015 | } | |
1016 | ||
1017 | /* | |
1018 | * If realtime flag is set then must have realtime data. | |
1019 | */ | |
1020 | if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1021 | if ((mp->m_sb.sb_rblocks == 0) || | |
1022 | (mp->m_sb.sb_rextsize == 0) || | |
1023 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { | |
1024 | code = XFS_ERROR(EINVAL); | |
1025 | goto error_return; | |
1026 | } | |
1027 | } | |
1028 | ||
1029 | /* | |
1030 | * Can't modify an immutable/append-only file unless | |
1031 | * we have appropriate permission. | |
1032 | */ | |
1033 | if ((ip->i_d.di_flags & | |
1034 | (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || | |
1035 | (fa->fsx_xflags & | |
1036 | (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && | |
1037 | !capable(CAP_LINUX_IMMUTABLE)) { | |
1038 | code = XFS_ERROR(EPERM); | |
1039 | goto error_return; | |
1040 | } | |
1041 | } | |
1042 | ||
1043 | xfs_trans_ijoin(tp, ip, lock_flags); | |
1044 | xfs_trans_ihold(tp, ip); | |
1045 | ||
1046 | /* | |
1047 | * Change file ownership. Must be the owner or privileged. | |
25fe55e8 CH |
1048 | */ |
1049 | if (mask & FSX_PROJID) { | |
1050 | /* | |
1051 | * CAP_FSETID overrides the following restrictions: | |
1052 | * | |
1053 | * The set-user-ID and set-group-ID bits of a file will be | |
1054 | * cleared upon successful return from chown() | |
1055 | */ | |
1056 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
1057 | !capable(CAP_FSETID)) | |
1058 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
1059 | ||
1060 | /* | |
1061 | * Change the ownerships and register quota modifications | |
1062 | * in the transaction. | |
1063 | */ | |
1064 | if (ip->i_d.di_projid != fa->fsx_projid) { | |
7d095257 CH |
1065 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { |
1066 | olddquot = xfs_qm_vop_chown(tp, ip, | |
25fe55e8 CH |
1067 | &ip->i_gdquot, gdqp); |
1068 | } | |
1069 | ip->i_d.di_projid = fa->fsx_projid; | |
1070 | ||
1071 | /* | |
1072 | * We may have to rev the inode as well as | |
1073 | * the superblock version number since projids didn't | |
1074 | * exist before DINODE_VERSION_2 and SB_VERSION_NLINK. | |
1075 | */ | |
51ce16d5 | 1076 | if (ip->i_d.di_version == 1) |
25fe55e8 CH |
1077 | xfs_bump_ino_vers2(tp, ip); |
1078 | } | |
1079 | ||
1080 | } | |
1081 | ||
1082 | if (mask & FSX_EXTSIZE) | |
1083 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
f13fae2d | 1084 | if (mask & FSX_XFLAGS) { |
25fe55e8 | 1085 | xfs_set_diflags(ip, fa->fsx_xflags); |
f13fae2d CH |
1086 | xfs_diflags_to_linux(ip); |
1087 | } | |
25fe55e8 CH |
1088 | |
1089 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
1090 | xfs_ichgtime(ip, XFS_ICHGTIME_CHG); | |
1091 | ||
1092 | XFS_STATS_INC(xs_ig_attrchg); | |
1093 | ||
1094 | /* | |
1095 | * If this is a synchronous mount, make sure that the | |
1096 | * transaction goes to disk before returning to the user. | |
1097 | * This is slightly sub-optimal in that truncates require | |
1098 | * two sync transactions instead of one for wsync filesystems. | |
1099 | * One for the truncate and one for the timestamps since we | |
1100 | * don't want to change the timestamps unless we're sure the | |
1101 | * truncate worked. Truncates are less than 1% of the laddis | |
1102 | * mix so this probably isn't worth the trouble to optimize. | |
1103 | */ | |
1104 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1105 | xfs_trans_set_sync(tp); | |
1106 | code = xfs_trans_commit(tp, 0); | |
1107 | xfs_iunlock(ip, lock_flags); | |
1108 | ||
1109 | /* | |
1110 | * Release any dquot(s) the inode had kept before chown. | |
1111 | */ | |
7d095257 CH |
1112 | xfs_qm_dqrele(olddquot); |
1113 | xfs_qm_dqrele(udqp); | |
1114 | xfs_qm_dqrele(gdqp); | |
25fe55e8 CH |
1115 | |
1116 | if (code) | |
1117 | return code; | |
1118 | ||
1119 | if (DM_EVENT_ENABLED(ip, DM_EVENT_ATTRIBUTE)) { | |
1120 | XFS_SEND_NAMESP(mp, DM_EVENT_ATTRIBUTE, ip, DM_RIGHT_NULL, | |
1121 | NULL, DM_RIGHT_NULL, NULL, NULL, 0, 0, | |
1122 | (mask & FSX_NONBLOCK) ? DM_FLAGS_NDELAY : 0); | |
1123 | } | |
1124 | ||
25fe55e8 CH |
1125 | return 0; |
1126 | ||
1127 | error_return: | |
7d095257 CH |
1128 | xfs_qm_dqrele(udqp); |
1129 | xfs_qm_dqrele(gdqp); | |
25fe55e8 CH |
1130 | xfs_trans_cancel(tp, 0); |
1131 | if (lock_flags) | |
1132 | xfs_iunlock(ip, lock_flags); | |
1133 | return code; | |
1134 | } | |
1135 | ||
1da177e4 | 1136 | STATIC int |
df26cfe8 | 1137 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1138 | xfs_inode_t *ip, |
1139 | struct file *filp, | |
1da177e4 LT |
1140 | void __user *arg) |
1141 | { | |
1142 | struct fsxattr fa; | |
25fe55e8 | 1143 | unsigned int mask; |
df26cfe8 LM |
1144 | |
1145 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1146 | return -EFAULT; | |
1da177e4 | 1147 | |
25fe55e8 | 1148 | mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; |
df26cfe8 | 1149 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 | 1150 | mask |= FSX_NONBLOCK; |
1da177e4 | 1151 | |
25fe55e8 | 1152 | return -xfs_ioctl_setattr(ip, &fa, mask); |
df26cfe8 | 1153 | } |
1da177e4 | 1154 | |
df26cfe8 LM |
1155 | STATIC int |
1156 | xfs_ioc_getxflags( | |
1157 | xfs_inode_t *ip, | |
1158 | void __user *arg) | |
1159 | { | |
1160 | unsigned int flags; | |
1da177e4 | 1161 | |
df26cfe8 LM |
1162 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1163 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1164 | return -EFAULT; | |
1165 | return 0; | |
1166 | } | |
1da177e4 | 1167 | |
df26cfe8 LM |
1168 | STATIC int |
1169 | xfs_ioc_setxflags( | |
1170 | xfs_inode_t *ip, | |
1171 | struct file *filp, | |
1172 | void __user *arg) | |
1173 | { | |
25fe55e8 | 1174 | struct fsxattr fa; |
df26cfe8 | 1175 | unsigned int flags; |
25fe55e8 | 1176 | unsigned int mask; |
1da177e4 | 1177 | |
df26cfe8 LM |
1178 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1179 | return -EFAULT; | |
1da177e4 | 1180 | |
df26cfe8 LM |
1181 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1182 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1183 | FS_SYNC_FL)) | |
1184 | return -EOPNOTSUPP; | |
1da177e4 | 1185 | |
25fe55e8 | 1186 | mask = FSX_XFLAGS; |
df26cfe8 | 1187 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 CH |
1188 | mask |= FSX_NONBLOCK; |
1189 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); | |
1da177e4 | 1190 | |
25fe55e8 | 1191 | return -xfs_ioctl_setattr(ip, &fa, mask); |
1da177e4 LT |
1192 | } |
1193 | ||
8a7141a8 ES |
1194 | STATIC int |
1195 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) | |
1196 | { | |
1197 | struct getbmap __user *base = *ap; | |
1198 | ||
1199 | /* copy only getbmap portion (not getbmapx) */ | |
1200 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
1201 | return XFS_ERROR(EFAULT); | |
1202 | ||
1203 | *ap += sizeof(struct getbmap); | |
1204 | return 0; | |
1205 | } | |
1206 | ||
1da177e4 LT |
1207 | STATIC int |
1208 | xfs_ioc_getbmap( | |
993386c1 | 1209 | struct xfs_inode *ip, |
1da177e4 LT |
1210 | int ioflags, |
1211 | unsigned int cmd, | |
1212 | void __user *arg) | |
1213 | { | |
8a7141a8 | 1214 | struct getbmapx bmx; |
1da177e4 LT |
1215 | int error; |
1216 | ||
8a7141a8 | 1217 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
1da177e4 LT |
1218 | return -XFS_ERROR(EFAULT); |
1219 | ||
8a7141a8 | 1220 | if (bmx.bmv_count < 2) |
1da177e4 LT |
1221 | return -XFS_ERROR(EINVAL); |
1222 | ||
8a7141a8 | 1223 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
1da177e4 | 1224 | if (ioflags & IO_INVIS) |
8a7141a8 | 1225 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1226 | |
8a7141a8 ES |
1227 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
1228 | (struct getbmap *)arg+1); | |
1da177e4 LT |
1229 | if (error) |
1230 | return -error; | |
1231 | ||
8a7141a8 ES |
1232 | /* copy back header - only size of getbmap */ |
1233 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
1da177e4 LT |
1234 | return -XFS_ERROR(EFAULT); |
1235 | return 0; | |
1236 | } | |
1237 | ||
8a7141a8 ES |
1238 | STATIC int |
1239 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) | |
1240 | { | |
1241 | struct getbmapx __user *base = *ap; | |
1242 | ||
1243 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
1244 | return XFS_ERROR(EFAULT); | |
1245 | ||
1246 | *ap += sizeof(struct getbmapx); | |
1247 | return 0; | |
1248 | } | |
1249 | ||
1da177e4 LT |
1250 | STATIC int |
1251 | xfs_ioc_getbmapx( | |
993386c1 | 1252 | struct xfs_inode *ip, |
1da177e4 LT |
1253 | void __user *arg) |
1254 | { | |
1255 | struct getbmapx bmx; | |
1da177e4 LT |
1256 | int error; |
1257 | ||
1258 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1259 | return -XFS_ERROR(EFAULT); | |
1260 | ||
1261 | if (bmx.bmv_count < 2) | |
1262 | return -XFS_ERROR(EINVAL); | |
1263 | ||
8a7141a8 | 1264 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
1da177e4 LT |
1265 | return -XFS_ERROR(EINVAL); |
1266 | ||
8a7141a8 ES |
1267 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
1268 | (struct getbmapx *)arg+1); | |
1da177e4 LT |
1269 | if (error) |
1270 | return -error; | |
1271 | ||
8a7141a8 ES |
1272 | /* copy back header */ |
1273 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
1da177e4 LT |
1274 | return -XFS_ERROR(EFAULT); |
1275 | ||
1276 | return 0; | |
1277 | } | |
df26cfe8 | 1278 | |
4d4be482 CH |
1279 | /* |
1280 | * Note: some of the ioctl's return positive numbers as a | |
1281 | * byte count indicating success, such as readlink_by_handle. | |
1282 | * So we don't "sign flip" like most other routines. This means | |
1283 | * true errors need to be returned as a negative value. | |
1284 | */ | |
1285 | long | |
1286 | xfs_file_ioctl( | |
df26cfe8 | 1287 | struct file *filp, |
df26cfe8 | 1288 | unsigned int cmd, |
4d4be482 | 1289 | unsigned long p) |
df26cfe8 LM |
1290 | { |
1291 | struct inode *inode = filp->f_path.dentry->d_inode; | |
4d4be482 CH |
1292 | struct xfs_inode *ip = XFS_I(inode); |
1293 | struct xfs_mount *mp = ip->i_mount; | |
1294 | void __user *arg = (void __user *)p; | |
1295 | int ioflags = 0; | |
df26cfe8 LM |
1296 | int error; |
1297 | ||
4d4be482 CH |
1298 | if (filp->f_mode & FMODE_NOCMTIME) |
1299 | ioflags |= IO_INVIS; | |
df26cfe8 | 1300 | |
4d4be482 CH |
1301 | xfs_itrace_entry(ip); |
1302 | ||
1303 | switch (cmd) { | |
df26cfe8 LM |
1304 | case XFS_IOC_ALLOCSP: |
1305 | case XFS_IOC_FREESP: | |
1306 | case XFS_IOC_RESVSP: | |
1307 | case XFS_IOC_UNRESVSP: | |
1308 | case XFS_IOC_ALLOCSP64: | |
1309 | case XFS_IOC_FREESP64: | |
1310 | case XFS_IOC_RESVSP64: | |
743bb465 | 1311 | case XFS_IOC_UNRESVSP64: { |
1312 | xfs_flock64_t bf; | |
df26cfe8 | 1313 | |
743bb465 | 1314 | if (copy_from_user(&bf, arg, sizeof(bf))) |
1315 | return -XFS_ERROR(EFAULT); | |
1316 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); | |
1317 | } | |
df26cfe8 LM |
1318 | case XFS_IOC_DIOINFO: { |
1319 | struct dioattr da; | |
1320 | xfs_buftarg_t *target = | |
1321 | XFS_IS_REALTIME_INODE(ip) ? | |
1322 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1323 | ||
1324 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; | |
1325 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); | |
1326 | ||
1327 | if (copy_to_user(arg, &da, sizeof(da))) | |
1328 | return -XFS_ERROR(EFAULT); | |
1329 | return 0; | |
1330 | } | |
1331 | ||
1332 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1333 | case XFS_IOC_FSBULKSTAT: | |
1334 | case XFS_IOC_FSINUMBERS: | |
1335 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1336 | ||
1337 | case XFS_IOC_FSGEOMETRY_V1: | |
1338 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1339 | ||
1340 | case XFS_IOC_FSGEOMETRY: | |
1341 | return xfs_ioc_fsgeometry(mp, arg); | |
1342 | ||
1343 | case XFS_IOC_GETVERSION: | |
1344 | return put_user(inode->i_generation, (int __user *)arg); | |
1345 | ||
1346 | case XFS_IOC_FSGETXATTR: | |
1347 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1348 | case XFS_IOC_FSGETXATTRA: | |
1349 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1350 | case XFS_IOC_FSSETXATTR: |
1351 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1352 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1353 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1354 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1355 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1356 | |
1357 | case XFS_IOC_FSSETDM: { | |
1358 | struct fsdmidata dmi; | |
1359 | ||
1360 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
1361 | return -XFS_ERROR(EFAULT); | |
1362 | ||
1363 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, | |
1364 | dmi.fsd_dmstate); | |
1365 | return -error; | |
1366 | } | |
1367 | ||
1368 | case XFS_IOC_GETBMAP: | |
1369 | case XFS_IOC_GETBMAPA: | |
1370 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1371 | ||
1372 | case XFS_IOC_GETBMAPX: | |
1373 | return xfs_ioc_getbmapx(ip, arg); | |
1374 | ||
1375 | case XFS_IOC_FD_TO_HANDLE: | |
1376 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1377 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1378 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1379 | |
743bb465 | 1380 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
1381 | return -XFS_ERROR(EFAULT); | |
1382 | return xfs_find_handle(cmd, &hreq); | |
1383 | } | |
1384 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1385 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1386 | |
743bb465 | 1387 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1388 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1389 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1390 | } |
df26cfe8 | 1391 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1392 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1393 | |
743bb465 | 1394 | case XFS_IOC_READLINK_BY_HANDLE: { |
1395 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1396 | |
743bb465 | 1397 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1398 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1399 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1400 | } |
df26cfe8 | 1401 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1402 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1403 | |
1404 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1405 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1406 | |
1407 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1408 | struct xfs_swapext sxp; |
1409 | ||
1410 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
1411 | return -XFS_ERROR(EFAULT); | |
1412 | error = xfs_swapext(&sxp); | |
df26cfe8 LM |
1413 | return -error; |
1414 | } | |
1415 | ||
1416 | case XFS_IOC_FSCOUNTS: { | |
1417 | xfs_fsop_counts_t out; | |
1418 | ||
1419 | error = xfs_fs_counts(mp, &out); | |
1420 | if (error) | |
1421 | return -error; | |
1422 | ||
1423 | if (copy_to_user(arg, &out, sizeof(out))) | |
1424 | return -XFS_ERROR(EFAULT); | |
1425 | return 0; | |
1426 | } | |
1427 | ||
1428 | case XFS_IOC_SET_RESBLKS: { | |
1429 | xfs_fsop_resblks_t inout; | |
1430 | __uint64_t in; | |
1431 | ||
1432 | if (!capable(CAP_SYS_ADMIN)) | |
1433 | return -EPERM; | |
1434 | ||
d5db0f97 ES |
1435 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
1436 | return -XFS_ERROR(EROFS); | |
1437 | ||
df26cfe8 LM |
1438 | if (copy_from_user(&inout, arg, sizeof(inout))) |
1439 | return -XFS_ERROR(EFAULT); | |
1440 | ||
1441 | /* input parameter is passed in resblks field of structure */ | |
1442 | in = inout.resblks; | |
1443 | error = xfs_reserve_blocks(mp, &in, &inout); | |
1444 | if (error) | |
1445 | return -error; | |
1446 | ||
1447 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
1448 | return -XFS_ERROR(EFAULT); | |
1449 | return 0; | |
1450 | } | |
1451 | ||
1452 | case XFS_IOC_GET_RESBLKS: { | |
1453 | xfs_fsop_resblks_t out; | |
1454 | ||
1455 | if (!capable(CAP_SYS_ADMIN)) | |
1456 | return -EPERM; | |
1457 | ||
1458 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1459 | if (error) | |
1460 | return -error; | |
1461 | ||
1462 | if (copy_to_user(arg, &out, sizeof(out))) | |
1463 | return -XFS_ERROR(EFAULT); | |
1464 | ||
1465 | return 0; | |
1466 | } | |
1467 | ||
1468 | case XFS_IOC_FSGROWFSDATA: { | |
1469 | xfs_growfs_data_t in; | |
1470 | ||
df26cfe8 LM |
1471 | if (copy_from_user(&in, arg, sizeof(in))) |
1472 | return -XFS_ERROR(EFAULT); | |
1473 | ||
1474 | error = xfs_growfs_data(mp, &in); | |
1475 | return -error; | |
1476 | } | |
1477 | ||
1478 | case XFS_IOC_FSGROWFSLOG: { | |
1479 | xfs_growfs_log_t in; | |
1480 | ||
df26cfe8 LM |
1481 | if (copy_from_user(&in, arg, sizeof(in))) |
1482 | return -XFS_ERROR(EFAULT); | |
1483 | ||
1484 | error = xfs_growfs_log(mp, &in); | |
1485 | return -error; | |
1486 | } | |
1487 | ||
1488 | case XFS_IOC_FSGROWFSRT: { | |
1489 | xfs_growfs_rt_t in; | |
1490 | ||
df26cfe8 LM |
1491 | if (copy_from_user(&in, arg, sizeof(in))) |
1492 | return -XFS_ERROR(EFAULT); | |
1493 | ||
1494 | error = xfs_growfs_rt(mp, &in); | |
1495 | return -error; | |
1496 | } | |
1497 | ||
df26cfe8 LM |
1498 | case XFS_IOC_GOINGDOWN: { |
1499 | __uint32_t in; | |
1500 | ||
1501 | if (!capable(CAP_SYS_ADMIN)) | |
1502 | return -EPERM; | |
1503 | ||
1504 | if (get_user(in, (__uint32_t __user *)arg)) | |
1505 | return -XFS_ERROR(EFAULT); | |
1506 | ||
1507 | error = xfs_fs_goingdown(mp, in); | |
1508 | return -error; | |
1509 | } | |
1510 | ||
1511 | case XFS_IOC_ERROR_INJECTION: { | |
1512 | xfs_error_injection_t in; | |
1513 | ||
1514 | if (!capable(CAP_SYS_ADMIN)) | |
1515 | return -EPERM; | |
1516 | ||
1517 | if (copy_from_user(&in, arg, sizeof(in))) | |
1518 | return -XFS_ERROR(EFAULT); | |
1519 | ||
1520 | error = xfs_errortag_add(in.errtag, mp); | |
1521 | return -error; | |
1522 | } | |
1523 | ||
1524 | case XFS_IOC_ERROR_CLEARALL: | |
1525 | if (!capable(CAP_SYS_ADMIN)) | |
1526 | return -EPERM; | |
1527 | ||
1528 | error = xfs_errortag_clearall(mp, 1); | |
1529 | return -error; | |
1530 | ||
1531 | default: | |
1532 | return -ENOTTY; | |
1533 | } | |
1534 | } |