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 | 26 | #include "xfs_alloc.h" |
1da177e4 | 27 | #include "xfs_mount.h" |
1da177e4 | 28 | #include "xfs_bmap_btree.h" |
1da177e4 LT |
29 | #include "xfs_dinode.h" |
30 | #include "xfs_inode.h" | |
7bf446f8 | 31 | #include "xfs_ioctl.h" |
1da177e4 | 32 | #include "xfs_rtalloc.h" |
1da177e4 | 33 | #include "xfs_itable.h" |
a844f451 | 34 | #include "xfs_error.h" |
1da177e4 | 35 | #include "xfs_attr.h" |
a844f451 | 36 | #include "xfs_bmap.h" |
1da177e4 LT |
37 | #include "xfs_buf_item.h" |
38 | #include "xfs_utils.h" | |
39 | #include "xfs_dfrag.h" | |
40 | #include "xfs_fsops.h" | |
993386c1 | 41 | #include "xfs_vnodeops.h" |
a46db608 | 42 | #include "xfs_discard.h" |
25fe55e8 CH |
43 | #include "xfs_quota.h" |
44 | #include "xfs_inode_item.h" | |
d296d30a | 45 | #include "xfs_export.h" |
0b1b213f | 46 | #include "xfs_trace.h" |
1da177e4 | 47 | |
16f7e0fe | 48 | #include <linux/capability.h> |
1da177e4 LT |
49 | #include <linux/dcache.h> |
50 | #include <linux/mount.h> | |
51 | #include <linux/namei.h> | |
52 | #include <linux/pagemap.h> | |
5a0e3ad6 | 53 | #include <linux/slab.h> |
d296d30a | 54 | #include <linux/exportfs.h> |
1da177e4 LT |
55 | |
56 | /* | |
57 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
58 | * a file or fs handle. | |
59 | * | |
60 | * XFS_IOC_PATH_TO_FSHANDLE | |
61 | * returns fs handle for a mount point or path within that mount point | |
62 | * XFS_IOC_FD_TO_HANDLE | |
63 | * returns full handle for a FD opened in user space | |
64 | * XFS_IOC_PATH_TO_HANDLE | |
65 | * returns full handle for a path | |
66 | */ | |
d5547f9f | 67 | int |
1da177e4 LT |
68 | xfs_find_handle( |
69 | unsigned int cmd, | |
743bb465 | 70 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
71 | { |
72 | int hsize; | |
73 | xfs_handle_t handle; | |
1da177e4 | 74 | struct inode *inode; |
4346cdd4 CH |
75 | struct file *file = NULL; |
76 | struct path path; | |
77 | int error; | |
78 | struct xfs_inode *ip; | |
1da177e4 | 79 | |
4346cdd4 | 80 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
743bb465 | 81 | file = fget(hreq->fd); |
1da177e4 | 82 | if (!file) |
4346cdd4 CH |
83 | return -EBADF; |
84 | inode = file->f_path.dentry->d_inode; | |
85 | } else { | |
86 | error = user_lpath((const char __user *)hreq->path, &path); | |
87 | if (error) | |
88 | return error; | |
89 | inode = path.dentry->d_inode; | |
1da177e4 | 90 | } |
4346cdd4 CH |
91 | ip = XFS_I(inode); |
92 | ||
93 | /* | |
94 | * We can only generate handles for inodes residing on a XFS filesystem, | |
95 | * and only for regular files, directories or symbolic links. | |
96 | */ | |
97 | error = -EINVAL; | |
98 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
99 | goto out_put; | |
100 | ||
101 | error = -EBADF; | |
102 | if (!S_ISREG(inode->i_mode) && | |
103 | !S_ISDIR(inode->i_mode) && | |
104 | !S_ISLNK(inode->i_mode)) | |
105 | goto out_put; | |
106 | ||
107 | ||
108 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
109 | ||
110 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
111 | /* | |
112 | * This handle only contains an fsid, zero the rest. | |
113 | */ | |
114 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
115 | hsize = sizeof(xfs_fsid_t); | |
116 | } else { | |
1da177e4 LT |
117 | int lock_mode; |
118 | ||
1da177e4 | 119 | lock_mode = xfs_ilock_map_shared(ip); |
c6143911 CH |
120 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
121 | sizeof(handle.ha_fid.fid_len); | |
122 | handle.ha_fid.fid_pad = 0; | |
123 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
124 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
125 | xfs_iunlock_map_shared(ip, lock_mode); |
126 | ||
127 | hsize = XFS_HSIZE(handle); | |
128 | } | |
129 | ||
4346cdd4 | 130 | error = -EFAULT; |
743bb465 | 131 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
132 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
133 | goto out_put; | |
1da177e4 | 134 | |
4346cdd4 CH |
135 | error = 0; |
136 | ||
137 | out_put: | |
138 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
139 | fput(file); | |
140 | else | |
141 | path_put(&path); | |
142 | return error; | |
1da177e4 LT |
143 | } |
144 | ||
1da177e4 | 145 | /* |
d296d30a CH |
146 | * No need to do permission checks on the various pathname components |
147 | * as the handle operations are privileged. | |
1da177e4 LT |
148 | */ |
149 | STATIC int | |
d296d30a CH |
150 | xfs_handle_acceptable( |
151 | void *context, | |
152 | struct dentry *dentry) | |
153 | { | |
154 | return 1; | |
155 | } | |
156 | ||
157 | /* | |
158 | * Convert userspace handle data into a dentry. | |
159 | */ | |
160 | struct dentry * | |
161 | xfs_handle_to_dentry( | |
162 | struct file *parfilp, | |
163 | void __user *uhandle, | |
164 | u32 hlen) | |
1da177e4 | 165 | { |
1da177e4 | 166 | xfs_handle_t handle; |
d296d30a | 167 | struct xfs_fid64 fid; |
1da177e4 LT |
168 | |
169 | /* | |
170 | * Only allow handle opens under a directory. | |
171 | */ | |
d296d30a CH |
172 | if (!S_ISDIR(parfilp->f_path.dentry->d_inode->i_mode)) |
173 | return ERR_PTR(-ENOTDIR); | |
174 | ||
175 | if (hlen != sizeof(xfs_handle_t)) | |
176 | return ERR_PTR(-EINVAL); | |
177 | if (copy_from_user(&handle, uhandle, hlen)) | |
178 | return ERR_PTR(-EFAULT); | |
179 | if (handle.ha_fid.fid_len != | |
180 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
181 | return ERR_PTR(-EINVAL); | |
182 | ||
183 | memset(&fid, 0, sizeof(struct fid)); | |
184 | fid.ino = handle.ha_fid.fid_ino; | |
185 | fid.gen = handle.ha_fid.fid_gen; | |
186 | ||
187 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
188 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
189 | xfs_handle_acceptable, NULL); | |
190 | } | |
1da177e4 | 191 | |
d296d30a CH |
192 | STATIC struct dentry * |
193 | xfs_handlereq_to_dentry( | |
194 | struct file *parfilp, | |
195 | xfs_fsop_handlereq_t *hreq) | |
196 | { | |
197 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
198 | } |
199 | ||
d5547f9f | 200 | int |
1da177e4 | 201 | xfs_open_by_handle( |
1da177e4 | 202 | struct file *parfilp, |
d296d30a | 203 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 204 | { |
745ca247 | 205 | const struct cred *cred = current_cred(); |
1da177e4 | 206 | int error; |
d296d30a | 207 | int fd; |
1da177e4 LT |
208 | int permflag; |
209 | struct file *filp; | |
210 | struct inode *inode; | |
211 | struct dentry *dentry; | |
1da177e4 LT |
212 | |
213 | if (!capable(CAP_SYS_ADMIN)) | |
214 | return -XFS_ERROR(EPERM); | |
1da177e4 | 215 | |
d296d30a CH |
216 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
217 | if (IS_ERR(dentry)) | |
218 | return PTR_ERR(dentry); | |
219 | inode = dentry->d_inode; | |
1da177e4 LT |
220 | |
221 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
222 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
d296d30a CH |
223 | error = -XFS_ERROR(EPERM); |
224 | goto out_dput; | |
1da177e4 LT |
225 | } |
226 | ||
227 | #if BITS_PER_LONG != 32 | |
743bb465 | 228 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 229 | #endif |
d296d30a | 230 | |
1da177e4 | 231 | /* Put open permission in namei format. */ |
743bb465 | 232 | permflag = hreq->oflags; |
1da177e4 LT |
233 | if ((permflag+1) & O_ACCMODE) |
234 | permflag++; | |
235 | if (permflag & O_TRUNC) | |
236 | permflag |= 2; | |
237 | ||
238 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && | |
239 | (permflag & FMODE_WRITE) && IS_APPEND(inode)) { | |
d296d30a CH |
240 | error = -XFS_ERROR(EPERM); |
241 | goto out_dput; | |
1da177e4 LT |
242 | } |
243 | ||
244 | if ((permflag & FMODE_WRITE) && IS_IMMUTABLE(inode)) { | |
d296d30a CH |
245 | error = -XFS_ERROR(EACCES); |
246 | goto out_dput; | |
1da177e4 LT |
247 | } |
248 | ||
249 | /* Can't write directories. */ | |
d296d30a CH |
250 | if (S_ISDIR(inode->i_mode) && (permflag & FMODE_WRITE)) { |
251 | error = -XFS_ERROR(EISDIR); | |
252 | goto out_dput; | |
1da177e4 LT |
253 | } |
254 | ||
d296d30a CH |
255 | fd = get_unused_fd(); |
256 | if (fd < 0) { | |
257 | error = fd; | |
258 | goto out_dput; | |
1da177e4 LT |
259 | } |
260 | ||
d296d30a CH |
261 | filp = dentry_open(dentry, mntget(parfilp->f_path.mnt), |
262 | hreq->oflags, cred); | |
1da177e4 | 263 | if (IS_ERR(filp)) { |
d296d30a CH |
264 | put_unused_fd(fd); |
265 | return PTR_ERR(filp); | |
1da177e4 | 266 | } |
4d4be482 | 267 | |
03209378 | 268 | if (S_ISREG(inode->i_mode)) { |
2e2e7bb1 | 269 | filp->f_flags |= O_NOATIME; |
4d4be482 | 270 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 271 | } |
1da177e4 | 272 | |
d296d30a CH |
273 | fd_install(fd, filp); |
274 | return fd; | |
275 | ||
276 | out_dput: | |
277 | dput(dentry); | |
278 | return error; | |
1da177e4 LT |
279 | } |
280 | ||
804c83c3 CH |
281 | /* |
282 | * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's | |
283 | * unused first argument. | |
284 | */ | |
285 | STATIC int | |
286 | do_readlink( | |
287 | char __user *buffer, | |
288 | int buflen, | |
289 | const char *link) | |
290 | { | |
291 | int len; | |
292 | ||
293 | len = PTR_ERR(link); | |
294 | if (IS_ERR(link)) | |
295 | goto out; | |
296 | ||
297 | len = strlen(link); | |
298 | if (len > (unsigned) buflen) | |
299 | len = buflen; | |
300 | if (copy_to_user(buffer, link, len)) | |
301 | len = -EFAULT; | |
302 | out: | |
303 | return len; | |
304 | } | |
305 | ||
306 | ||
d5547f9f | 307 | int |
1da177e4 | 308 | xfs_readlink_by_handle( |
d296d30a CH |
309 | struct file *parfilp, |
310 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 311 | { |
d296d30a | 312 | struct dentry *dentry; |
1da177e4 | 313 | __u32 olen; |
804c83c3 CH |
314 | void *link; |
315 | int error; | |
1da177e4 LT |
316 | |
317 | if (!capable(CAP_SYS_ADMIN)) | |
318 | return -XFS_ERROR(EPERM); | |
1da177e4 | 319 | |
d296d30a CH |
320 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
321 | if (IS_ERR(dentry)) | |
322 | return PTR_ERR(dentry); | |
1da177e4 LT |
323 | |
324 | /* Restrict this handle operation to symlinks only. */ | |
d296d30a | 325 | if (!S_ISLNK(dentry->d_inode->i_mode)) { |
804c83c3 | 326 | error = -XFS_ERROR(EINVAL); |
d296d30a | 327 | goto out_dput; |
1da177e4 LT |
328 | } |
329 | ||
743bb465 | 330 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
804c83c3 | 331 | error = -XFS_ERROR(EFAULT); |
d296d30a | 332 | goto out_dput; |
1da177e4 | 333 | } |
1da177e4 | 334 | |
804c83c3 | 335 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
d296d30a CH |
336 | if (!link) { |
337 | error = -XFS_ERROR(ENOMEM); | |
338 | goto out_dput; | |
339 | } | |
1da177e4 | 340 | |
d296d30a | 341 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
67fcaa73 | 342 | if (error) |
804c83c3 | 343 | goto out_kfree; |
743bb465 | 344 | error = do_readlink(hreq->ohandle, olen, link); |
804c83c3 CH |
345 | if (error) |
346 | goto out_kfree; | |
67fcaa73 | 347 | |
804c83c3 CH |
348 | out_kfree: |
349 | kfree(link); | |
d296d30a CH |
350 | out_dput: |
351 | dput(dentry); | |
804c83c3 | 352 | return error; |
1da177e4 LT |
353 | } |
354 | ||
355 | STATIC int | |
356 | xfs_fssetdm_by_handle( | |
d296d30a CH |
357 | struct file *parfilp, |
358 | void __user *arg) | |
1da177e4 LT |
359 | { |
360 | int error; | |
361 | struct fsdmidata fsd; | |
362 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 363 | struct dentry *dentry; |
1da177e4 LT |
364 | |
365 | if (!capable(CAP_MKNOD)) | |
366 | return -XFS_ERROR(EPERM); | |
367 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
368 | return -XFS_ERROR(EFAULT); | |
369 | ||
d296d30a CH |
370 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
371 | if (IS_ERR(dentry)) | |
372 | return PTR_ERR(dentry); | |
1da177e4 | 373 | |
d296d30a | 374 | if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { |
6e7f75ea CH |
375 | error = -XFS_ERROR(EPERM); |
376 | goto out; | |
1da177e4 LT |
377 | } |
378 | ||
379 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
6e7f75ea CH |
380 | error = -XFS_ERROR(EFAULT); |
381 | goto out; | |
1da177e4 LT |
382 | } |
383 | ||
d296d30a | 384 | error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, |
6e7f75ea | 385 | fsd.fsd_dmstate); |
1da177e4 | 386 | |
6e7f75ea | 387 | out: |
d296d30a | 388 | dput(dentry); |
6e7f75ea | 389 | return error; |
1da177e4 LT |
390 | } |
391 | ||
392 | STATIC int | |
393 | xfs_attrlist_by_handle( | |
d296d30a CH |
394 | struct file *parfilp, |
395 | void __user *arg) | |
1da177e4 | 396 | { |
d296d30a | 397 | int error = -ENOMEM; |
1da177e4 LT |
398 | attrlist_cursor_kern_t *cursor; |
399 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
d296d30a | 400 | struct dentry *dentry; |
1da177e4 LT |
401 | char *kbuf; |
402 | ||
403 | if (!capable(CAP_SYS_ADMIN)) | |
404 | return -XFS_ERROR(EPERM); | |
405 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
406 | return -XFS_ERROR(EFAULT); | |
407 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
408 | return -XFS_ERROR(EINVAL); | |
409 | ||
90ad58a8 CH |
410 | /* |
411 | * Reject flags, only allow namespaces. | |
412 | */ | |
413 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
414 | return -XFS_ERROR(EINVAL); | |
415 | ||
d296d30a CH |
416 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
417 | if (IS_ERR(dentry)) | |
418 | return PTR_ERR(dentry); | |
1da177e4 | 419 | |
6762b938 | 420 | kbuf = kzalloc(al_hreq.buflen, GFP_KERNEL); |
1da177e4 | 421 | if (!kbuf) |
d296d30a | 422 | goto out_dput; |
1da177e4 LT |
423 | |
424 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
d296d30a | 425 | error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, |
739bfb2a | 426 | al_hreq.flags, cursor); |
1da177e4 LT |
427 | if (error) |
428 | goto out_kfree; | |
429 | ||
430 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
431 | error = -EFAULT; | |
432 | ||
433 | out_kfree: | |
434 | kfree(kbuf); | |
d296d30a CH |
435 | out_dput: |
436 | dput(dentry); | |
437 | return error; | |
1da177e4 LT |
438 | } |
439 | ||
28750975 | 440 | int |
1da177e4 | 441 | xfs_attrmulti_attr_get( |
739bfb2a | 442 | struct inode *inode, |
a9273ca5 DC |
443 | unsigned char *name, |
444 | unsigned char __user *ubuf, | |
1da177e4 LT |
445 | __uint32_t *len, |
446 | __uint32_t flags) | |
447 | { | |
a9273ca5 | 448 | unsigned char *kbuf; |
1da177e4 | 449 | int error = EFAULT; |
e8b0ebaa | 450 | |
1da177e4 LT |
451 | if (*len > XATTR_SIZE_MAX) |
452 | return EINVAL; | |
ad650f5b DC |
453 | kbuf = kmem_zalloc(*len, KM_SLEEP | KM_MAYFAIL); |
454 | if (!kbuf) { | |
455 | kbuf = kmem_zalloc_large(*len); | |
456 | if (!kbuf) | |
457 | return ENOMEM; | |
458 | } | |
1da177e4 | 459 | |
e8b0ebaa | 460 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
461 | if (error) |
462 | goto out_kfree; | |
463 | ||
464 | if (copy_to_user(ubuf, kbuf, *len)) | |
465 | error = EFAULT; | |
466 | ||
467 | out_kfree: | |
ad650f5b DC |
468 | if (is_vmalloc_addr(kbuf)) |
469 | kmem_free_large(kbuf); | |
470 | else | |
471 | kmem_free(kbuf); | |
1da177e4 LT |
472 | return error; |
473 | } | |
474 | ||
28750975 | 475 | int |
1da177e4 | 476 | xfs_attrmulti_attr_set( |
739bfb2a | 477 | struct inode *inode, |
a9273ca5 DC |
478 | unsigned char *name, |
479 | const unsigned char __user *ubuf, | |
1da177e4 LT |
480 | __uint32_t len, |
481 | __uint32_t flags) | |
482 | { | |
a9273ca5 | 483 | unsigned char *kbuf; |
1da177e4 LT |
484 | int error = EFAULT; |
485 | ||
739bfb2a | 486 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
487 | return EPERM; |
488 | if (len > XATTR_SIZE_MAX) | |
489 | return EINVAL; | |
490 | ||
0e639bde LZ |
491 | kbuf = memdup_user(ubuf, len); |
492 | if (IS_ERR(kbuf)) | |
493 | return PTR_ERR(kbuf); | |
e8b0ebaa | 494 | |
739bfb2a | 495 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 | 496 | |
1da177e4 LT |
497 | return error; |
498 | } | |
499 | ||
28750975 | 500 | int |
1da177e4 | 501 | xfs_attrmulti_attr_remove( |
739bfb2a | 502 | struct inode *inode, |
a9273ca5 | 503 | unsigned char *name, |
1da177e4 LT |
504 | __uint32_t flags) |
505 | { | |
739bfb2a | 506 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 507 | return EPERM; |
739bfb2a | 508 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
509 | } |
510 | ||
511 | STATIC int | |
512 | xfs_attrmulti_by_handle( | |
42a74f20 | 513 | struct file *parfilp, |
d296d30a | 514 | void __user *arg) |
1da177e4 LT |
515 | { |
516 | int error; | |
517 | xfs_attr_multiop_t *ops; | |
518 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 519 | struct dentry *dentry; |
1da177e4 | 520 | unsigned int i, size; |
a9273ca5 | 521 | unsigned char *attr_name; |
1da177e4 LT |
522 | |
523 | if (!capable(CAP_SYS_ADMIN)) | |
524 | return -XFS_ERROR(EPERM); | |
525 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
526 | return -XFS_ERROR(EFAULT); | |
527 | ||
fda168c2 ZW |
528 | /* overflow check */ |
529 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) | |
530 | return -E2BIG; | |
531 | ||
d296d30a CH |
532 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
533 | if (IS_ERR(dentry)) | |
534 | return PTR_ERR(dentry); | |
1da177e4 LT |
535 | |
536 | error = E2BIG; | |
e182f57a | 537 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 538 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 539 | goto out_dput; |
1da177e4 | 540 | |
0e639bde LZ |
541 | ops = memdup_user(am_hreq.ops, size); |
542 | if (IS_ERR(ops)) { | |
543 | error = PTR_ERR(ops); | |
d296d30a | 544 | goto out_dput; |
0e639bde | 545 | } |
1da177e4 LT |
546 | |
547 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
548 | if (!attr_name) | |
549 | goto out_kfree_ops; | |
550 | ||
1da177e4 LT |
551 | error = 0; |
552 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 553 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
554 | ops[i].am_attrname, MAXNAMELEN); |
555 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
556 | error = -ERANGE; | |
557 | if (ops[i].am_error < 0) | |
558 | break; | |
559 | ||
560 | switch (ops[i].am_opcode) { | |
561 | case ATTR_OP_GET: | |
d296d30a CH |
562 | ops[i].am_error = xfs_attrmulti_attr_get( |
563 | dentry->d_inode, attr_name, | |
564 | ops[i].am_attrvalue, &ops[i].am_length, | |
565 | ops[i].am_flags); | |
1da177e4 LT |
566 | break; |
567 | case ATTR_OP_SET: | |
a561be71 | 568 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
569 | if (ops[i].am_error) |
570 | break; | |
d296d30a CH |
571 | ops[i].am_error = xfs_attrmulti_attr_set( |
572 | dentry->d_inode, attr_name, | |
573 | ops[i].am_attrvalue, ops[i].am_length, | |
574 | ops[i].am_flags); | |
2a79f17e | 575 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
576 | break; |
577 | case ATTR_OP_REMOVE: | |
a561be71 | 578 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
579 | if (ops[i].am_error) |
580 | break; | |
d296d30a CH |
581 | ops[i].am_error = xfs_attrmulti_attr_remove( |
582 | dentry->d_inode, attr_name, | |
583 | ops[i].am_flags); | |
2a79f17e | 584 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
585 | break; |
586 | default: | |
587 | ops[i].am_error = EINVAL; | |
588 | } | |
589 | } | |
590 | ||
591 | if (copy_to_user(am_hreq.ops, ops, size)) | |
592 | error = XFS_ERROR(EFAULT); | |
593 | ||
594 | kfree(attr_name); | |
595 | out_kfree_ops: | |
596 | kfree(ops); | |
d296d30a CH |
597 | out_dput: |
598 | dput(dentry); | |
1da177e4 LT |
599 | return -error; |
600 | } | |
601 | ||
d5547f9f | 602 | int |
1da177e4 | 603 | xfs_ioc_space( |
993386c1 | 604 | struct xfs_inode *ip, |
f37ea149 | 605 | struct inode *inode, |
1da177e4 LT |
606 | struct file *filp, |
607 | int ioflags, | |
608 | unsigned int cmd, | |
743bb465 | 609 | xfs_flock64_t *bf) |
1da177e4 | 610 | { |
1da177e4 LT |
611 | int attr_flags = 0; |
612 | int error; | |
613 | ||
743bb465 | 614 | /* |
615 | * Only allow the sys admin to reserve space unless | |
616 | * unwritten extents are enabled. | |
617 | */ | |
618 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
619 | !capable(CAP_SYS_ADMIN)) | |
620 | return -XFS_ERROR(EPERM); | |
621 | ||
f37ea149 | 622 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
623 | return -XFS_ERROR(EPERM); |
624 | ||
ad4a8ac4 | 625 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
626 | return -XFS_ERROR(EBADF); |
627 | ||
f37ea149 | 628 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
629 | return -XFS_ERROR(EINVAL); |
630 | ||
1da177e4 | 631 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
0f285c8a | 632 | attr_flags |= XFS_ATTR_NONBLOCK; |
82878897 DC |
633 | |
634 | if (filp->f_flags & O_DSYNC) | |
635 | attr_flags |= XFS_ATTR_SYNC; | |
636 | ||
1da177e4 | 637 | if (ioflags & IO_INVIS) |
0f285c8a | 638 | attr_flags |= XFS_ATTR_DMI; |
1da177e4 | 639 | |
743bb465 | 640 | error = xfs_change_file_space(ip, cmd, bf, filp->f_pos, attr_flags); |
1da177e4 LT |
641 | return -error; |
642 | } | |
643 | ||
644 | STATIC int | |
645 | xfs_ioc_bulkstat( | |
646 | xfs_mount_t *mp, | |
647 | unsigned int cmd, | |
648 | void __user *arg) | |
649 | { | |
650 | xfs_fsop_bulkreq_t bulkreq; | |
651 | int count; /* # of records returned */ | |
652 | xfs_ino_t inlast; /* last inode number */ | |
653 | int done; | |
654 | int error; | |
655 | ||
656 | /* done = 1 if there are more stats to get and if bulkstat */ | |
657 | /* should be called again (unused here, but used in dmapi) */ | |
658 | ||
659 | if (!capable(CAP_SYS_ADMIN)) | |
660 | return -EPERM; | |
661 | ||
662 | if (XFS_FORCED_SHUTDOWN(mp)) | |
663 | return -XFS_ERROR(EIO); | |
664 | ||
665 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
666 | return -XFS_ERROR(EFAULT); | |
667 | ||
668 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
669 | return -XFS_ERROR(EFAULT); | |
670 | ||
671 | if ((count = bulkreq.icount) <= 0) | |
672 | return -XFS_ERROR(EINVAL); | |
673 | ||
cd57e594 LM |
674 | if (bulkreq.ubuffer == NULL) |
675 | return -XFS_ERROR(EINVAL); | |
676 | ||
1da177e4 LT |
677 | if (cmd == XFS_IOC_FSINUMBERS) |
678 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 679 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 LT |
680 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
681 | error = xfs_bulkstat_single(mp, &inlast, | |
682 | bulkreq.ubuffer, &done); | |
cd57e594 | 683 | else /* XFS_IOC_FSBULKSTAT */ |
7dce11db CH |
684 | error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, |
685 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
686 | &done); | |
1da177e4 LT |
687 | |
688 | if (error) | |
689 | return -error; | |
690 | ||
691 | if (bulkreq.ocount != NULL) { | |
692 | if (copy_to_user(bulkreq.lastip, &inlast, | |
693 | sizeof(xfs_ino_t))) | |
694 | return -XFS_ERROR(EFAULT); | |
695 | ||
696 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
697 | return -XFS_ERROR(EFAULT); | |
698 | } | |
699 | ||
700 | return 0; | |
701 | } | |
702 | ||
703 | STATIC int | |
704 | xfs_ioc_fsgeometry_v1( | |
705 | xfs_mount_t *mp, | |
706 | void __user *arg) | |
707 | { | |
eeb2036b | 708 | xfs_fsop_geom_t fsgeo; |
1da177e4 LT |
709 | int error; |
710 | ||
eeb2036b | 711 | error = xfs_fs_geometry(mp, &fsgeo, 3); |
1da177e4 LT |
712 | if (error) |
713 | return -error; | |
714 | ||
eeb2036b AE |
715 | /* |
716 | * Caller should have passed an argument of type | |
717 | * xfs_fsop_geom_v1_t. This is a proper subset of the | |
718 | * xfs_fsop_geom_t that xfs_fs_geometry() fills in. | |
719 | */ | |
720 | if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t))) | |
1da177e4 LT |
721 | return -XFS_ERROR(EFAULT); |
722 | return 0; | |
723 | } | |
724 | ||
725 | STATIC int | |
726 | xfs_ioc_fsgeometry( | |
727 | xfs_mount_t *mp, | |
728 | void __user *arg) | |
729 | { | |
730 | xfs_fsop_geom_t fsgeo; | |
731 | int error; | |
732 | ||
733 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
734 | if (error) | |
735 | return -error; | |
736 | ||
737 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
738 | return -XFS_ERROR(EFAULT); | |
739 | return 0; | |
740 | } | |
741 | ||
742 | /* | |
743 | * Linux extended inode flags interface. | |
744 | */ | |
1da177e4 LT |
745 | |
746 | STATIC unsigned int | |
747 | xfs_merge_ioc_xflags( | |
748 | unsigned int flags, | |
749 | unsigned int start) | |
750 | { | |
751 | unsigned int xflags = start; | |
752 | ||
39058a0e | 753 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
754 | xflags |= XFS_XFLAG_IMMUTABLE; |
755 | else | |
756 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 757 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
758 | xflags |= XFS_XFLAG_APPEND; |
759 | else | |
760 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 761 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
762 | xflags |= XFS_XFLAG_SYNC; |
763 | else | |
764 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 765 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
766 | xflags |= XFS_XFLAG_NOATIME; |
767 | else | |
768 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 769 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
770 | xflags |= XFS_XFLAG_NODUMP; |
771 | else | |
772 | xflags &= ~XFS_XFLAG_NODUMP; | |
773 | ||
774 | return xflags; | |
775 | } | |
776 | ||
777 | STATIC unsigned int | |
778 | xfs_di2lxflags( | |
779 | __uint16_t di_flags) | |
780 | { | |
781 | unsigned int flags = 0; | |
782 | ||
783 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 784 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 785 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 786 | flags |= FS_APPEND_FL; |
1da177e4 | 787 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 788 | flags |= FS_SYNC_FL; |
1da177e4 | 789 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 790 | flags |= FS_NOATIME_FL; |
1da177e4 | 791 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 792 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
793 | return flags; |
794 | } | |
795 | ||
c83bfab1 CH |
796 | STATIC int |
797 | xfs_ioc_fsgetxattr( | |
798 | xfs_inode_t *ip, | |
799 | int attr, | |
800 | void __user *arg) | |
801 | { | |
802 | struct fsxattr fa; | |
803 | ||
a122eb2f DR |
804 | memset(&fa, 0, sizeof(struct fsxattr)); |
805 | ||
c83bfab1 CH |
806 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
807 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
808 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
6743099c | 809 | fa.fsx_projid = xfs_get_projid(ip); |
c83bfab1 CH |
810 | |
811 | if (attr) { | |
812 | if (ip->i_afp) { | |
813 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
814 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
815 | sizeof(xfs_bmbt_rec_t); | |
816 | else | |
817 | fa.fsx_nextents = ip->i_d.di_anextents; | |
818 | } else | |
819 | fa.fsx_nextents = 0; | |
820 | } else { | |
821 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
822 | fa.fsx_nextents = ip->i_df.if_bytes / | |
823 | sizeof(xfs_bmbt_rec_t); | |
824 | else | |
825 | fa.fsx_nextents = ip->i_d.di_nextents; | |
826 | } | |
827 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
828 | ||
829 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
830 | return -EFAULT; | |
831 | return 0; | |
832 | } | |
833 | ||
25fe55e8 CH |
834 | STATIC void |
835 | xfs_set_diflags( | |
836 | struct xfs_inode *ip, | |
837 | unsigned int xflags) | |
838 | { | |
839 | unsigned int di_flags; | |
840 | ||
841 | /* can't set PREALLOC this way, just preserve it */ | |
842 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
843 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
844 | di_flags |= XFS_DIFLAG_IMMUTABLE; | |
845 | if (xflags & XFS_XFLAG_APPEND) | |
846 | di_flags |= XFS_DIFLAG_APPEND; | |
847 | if (xflags & XFS_XFLAG_SYNC) | |
848 | di_flags |= XFS_DIFLAG_SYNC; | |
849 | if (xflags & XFS_XFLAG_NOATIME) | |
850 | di_flags |= XFS_DIFLAG_NOATIME; | |
851 | if (xflags & XFS_XFLAG_NODUMP) | |
852 | di_flags |= XFS_DIFLAG_NODUMP; | |
853 | if (xflags & XFS_XFLAG_PROJINHERIT) | |
854 | di_flags |= XFS_DIFLAG_PROJINHERIT; | |
855 | if (xflags & XFS_XFLAG_NODEFRAG) | |
856 | di_flags |= XFS_DIFLAG_NODEFRAG; | |
857 | if (xflags & XFS_XFLAG_FILESTREAM) | |
858 | di_flags |= XFS_DIFLAG_FILESTREAM; | |
abbede1b | 859 | if (S_ISDIR(ip->i_d.di_mode)) { |
25fe55e8 CH |
860 | if (xflags & XFS_XFLAG_RTINHERIT) |
861 | di_flags |= XFS_DIFLAG_RTINHERIT; | |
862 | if (xflags & XFS_XFLAG_NOSYMLINKS) | |
863 | di_flags |= XFS_DIFLAG_NOSYMLINKS; | |
864 | if (xflags & XFS_XFLAG_EXTSZINHERIT) | |
865 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; | |
abbede1b | 866 | } else if (S_ISREG(ip->i_d.di_mode)) { |
25fe55e8 CH |
867 | if (xflags & XFS_XFLAG_REALTIME) |
868 | di_flags |= XFS_DIFLAG_REALTIME; | |
869 | if (xflags & XFS_XFLAG_EXTSIZE) | |
870 | di_flags |= XFS_DIFLAG_EXTSIZE; | |
871 | } | |
872 | ||
873 | ip->i_d.di_flags = di_flags; | |
874 | } | |
875 | ||
f13fae2d CH |
876 | STATIC void |
877 | xfs_diflags_to_linux( | |
878 | struct xfs_inode *ip) | |
879 | { | |
e4f75291 | 880 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
881 | unsigned int xflags = xfs_ip2xflags(ip); |
882 | ||
883 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
884 | inode->i_flags |= S_IMMUTABLE; | |
885 | else | |
886 | inode->i_flags &= ~S_IMMUTABLE; | |
887 | if (xflags & XFS_XFLAG_APPEND) | |
888 | inode->i_flags |= S_APPEND; | |
889 | else | |
890 | inode->i_flags &= ~S_APPEND; | |
891 | if (xflags & XFS_XFLAG_SYNC) | |
892 | inode->i_flags |= S_SYNC; | |
893 | else | |
894 | inode->i_flags &= ~S_SYNC; | |
895 | if (xflags & XFS_XFLAG_NOATIME) | |
896 | inode->i_flags |= S_NOATIME; | |
897 | else | |
898 | inode->i_flags &= ~S_NOATIME; | |
899 | } | |
25fe55e8 CH |
900 | |
901 | #define FSX_PROJID 1 | |
902 | #define FSX_EXTSIZE 2 | |
903 | #define FSX_XFLAGS 4 | |
904 | #define FSX_NONBLOCK 8 | |
905 | ||
906 | STATIC int | |
907 | xfs_ioctl_setattr( | |
908 | xfs_inode_t *ip, | |
909 | struct fsxattr *fa, | |
910 | int mask) | |
911 | { | |
912 | struct xfs_mount *mp = ip->i_mount; | |
913 | struct xfs_trans *tp; | |
914 | unsigned int lock_flags = 0; | |
7d095257 CH |
915 | struct xfs_dquot *udqp = NULL; |
916 | struct xfs_dquot *gdqp = NULL; | |
25fe55e8 CH |
917 | struct xfs_dquot *olddquot = NULL; |
918 | int code; | |
919 | ||
cca28fb8 | 920 | trace_xfs_ioctl_setattr(ip); |
25fe55e8 CH |
921 | |
922 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
923 | return XFS_ERROR(EROFS); | |
924 | if (XFS_FORCED_SHUTDOWN(mp)) | |
925 | return XFS_ERROR(EIO); | |
926 | ||
23963e54 | 927 | /* |
6743099c | 928 | * Disallow 32bit project ids when projid32bit feature is not enabled. |
23963e54 | 929 | */ |
6743099c AM |
930 | if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1) && |
931 | !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) | |
23963e54 AM |
932 | return XFS_ERROR(EINVAL); |
933 | ||
25fe55e8 CH |
934 | /* |
935 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
936 | * before we start any other transactions. Trying to do this later | |
937 | * is messy. We don't care to take a readlock to look at the ids | |
938 | * in inode here, because we can't hold it across the trans_reserve. | |
939 | * If the IDs do change before we take the ilock, we're covered | |
940 | * because the i_*dquot fields will get updated anyway. | |
941 | */ | |
942 | if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { | |
7d095257 | 943 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
25fe55e8 CH |
944 | ip->i_d.di_gid, fa->fsx_projid, |
945 | XFS_QMOPT_PQUOTA, &udqp, &gdqp); | |
946 | if (code) | |
947 | return code; | |
948 | } | |
949 | ||
950 | /* | |
951 | * For the other attributes, we acquire the inode lock and | |
952 | * first do an error checking pass. | |
953 | */ | |
954 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
955 | code = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); | |
956 | if (code) | |
957 | goto error_return; | |
958 | ||
959 | lock_flags = XFS_ILOCK_EXCL; | |
960 | xfs_ilock(ip, lock_flags); | |
961 | ||
962 | /* | |
963 | * CAP_FOWNER overrides the following restrictions: | |
964 | * | |
965 | * The user ID of the calling process must be equal | |
966 | * to the file owner ID, except in cases where the | |
967 | * CAP_FSETID capability is applicable. | |
968 | */ | |
91b77712 | 969 | if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) { |
25fe55e8 CH |
970 | code = XFS_ERROR(EPERM); |
971 | goto error_return; | |
972 | } | |
973 | ||
974 | /* | |
975 | * Do a quota reservation only if projid is actually going to change. | |
976 | */ | |
977 | if (mask & FSX_PROJID) { | |
7d095257 CH |
978 | if (XFS_IS_QUOTA_RUNNING(mp) && |
979 | XFS_IS_PQUOTA_ON(mp) && | |
6743099c | 980 | xfs_get_projid(ip) != fa->fsx_projid) { |
25fe55e8 | 981 | ASSERT(tp); |
7d095257 | 982 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, |
25fe55e8 CH |
983 | capable(CAP_FOWNER) ? |
984 | XFS_QMOPT_FORCE_RES : 0); | |
985 | if (code) /* out of quota */ | |
986 | goto error_return; | |
987 | } | |
988 | } | |
989 | ||
990 | if (mask & FSX_EXTSIZE) { | |
991 | /* | |
992 | * Can't change extent size if any extents are allocated. | |
993 | */ | |
994 | if (ip->i_d.di_nextents && | |
995 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != | |
996 | fa->fsx_extsize)) { | |
997 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
998 | goto error_return; | |
999 | } | |
1000 | ||
1001 | /* | |
1002 | * Extent size must be a multiple of the appropriate block | |
5315837d DC |
1003 | * size, if set at all. It must also be smaller than the |
1004 | * maximum extent size supported by the filesystem. | |
1005 | * | |
1006 | * Also, for non-realtime files, limit the extent size hint to | |
1007 | * half the size of the AGs in the filesystem so alignment | |
1008 | * doesn't result in extents larger than an AG. | |
25fe55e8 CH |
1009 | */ |
1010 | if (fa->fsx_extsize != 0) { | |
5315837d DC |
1011 | xfs_extlen_t size; |
1012 | xfs_fsblock_t extsize_fsb; | |
1013 | ||
1014 | extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); | |
1015 | if (extsize_fsb > MAXEXTLEN) { | |
1016 | code = XFS_ERROR(EINVAL); | |
1017 | goto error_return; | |
1018 | } | |
25fe55e8 CH |
1019 | |
1020 | if (XFS_IS_REALTIME_INODE(ip) || | |
1021 | ((mask & FSX_XFLAGS) && | |
1022 | (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { | |
1023 | size = mp->m_sb.sb_rextsize << | |
1024 | mp->m_sb.sb_blocklog; | |
1025 | } else { | |
1026 | size = mp->m_sb.sb_blocksize; | |
5315837d DC |
1027 | if (extsize_fsb > mp->m_sb.sb_agblocks / 2) { |
1028 | code = XFS_ERROR(EINVAL); | |
1029 | goto error_return; | |
1030 | } | |
25fe55e8 CH |
1031 | } |
1032 | ||
1033 | if (fa->fsx_extsize % size) { | |
1034 | code = XFS_ERROR(EINVAL); | |
1035 | goto error_return; | |
1036 | } | |
1037 | } | |
1038 | } | |
1039 | ||
1040 | ||
1041 | if (mask & FSX_XFLAGS) { | |
1042 | /* | |
1043 | * Can't change realtime flag if any extents are allocated. | |
1044 | */ | |
1045 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
1046 | (XFS_IS_REALTIME_INODE(ip)) != | |
1047 | (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1048 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1049 | goto error_return; | |
1050 | } | |
1051 | ||
1052 | /* | |
1053 | * If realtime flag is set then must have realtime data. | |
1054 | */ | |
1055 | if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1056 | if ((mp->m_sb.sb_rblocks == 0) || | |
1057 | (mp->m_sb.sb_rextsize == 0) || | |
1058 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { | |
1059 | code = XFS_ERROR(EINVAL); | |
1060 | goto error_return; | |
1061 | } | |
1062 | } | |
1063 | ||
1064 | /* | |
1065 | * Can't modify an immutable/append-only file unless | |
1066 | * we have appropriate permission. | |
1067 | */ | |
1068 | if ((ip->i_d.di_flags & | |
1069 | (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || | |
1070 | (fa->fsx_xflags & | |
1071 | (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && | |
1072 | !capable(CAP_LINUX_IMMUTABLE)) { | |
1073 | code = XFS_ERROR(EPERM); | |
1074 | goto error_return; | |
1075 | } | |
1076 | } | |
1077 | ||
ddc3415a | 1078 | xfs_trans_ijoin(tp, ip, 0); |
25fe55e8 CH |
1079 | |
1080 | /* | |
1081 | * Change file ownership. Must be the owner or privileged. | |
25fe55e8 CH |
1082 | */ |
1083 | if (mask & FSX_PROJID) { | |
1084 | /* | |
1085 | * CAP_FSETID overrides the following restrictions: | |
1086 | * | |
1087 | * The set-user-ID and set-group-ID bits of a file will be | |
1088 | * cleared upon successful return from chown() | |
1089 | */ | |
1090 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
1091 | !capable(CAP_FSETID)) | |
1092 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
1093 | ||
1094 | /* | |
1095 | * Change the ownerships and register quota modifications | |
1096 | * in the transaction. | |
1097 | */ | |
6743099c | 1098 | if (xfs_get_projid(ip) != fa->fsx_projid) { |
7d095257 CH |
1099 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { |
1100 | olddquot = xfs_qm_vop_chown(tp, ip, | |
25fe55e8 CH |
1101 | &ip->i_gdquot, gdqp); |
1102 | } | |
6743099c | 1103 | xfs_set_projid(ip, fa->fsx_projid); |
25fe55e8 CH |
1104 | |
1105 | /* | |
1106 | * We may have to rev the inode as well as | |
1107 | * the superblock version number since projids didn't | |
1108 | * exist before DINODE_VERSION_2 and SB_VERSION_NLINK. | |
1109 | */ | |
51ce16d5 | 1110 | if (ip->i_d.di_version == 1) |
25fe55e8 CH |
1111 | xfs_bump_ino_vers2(tp, ip); |
1112 | } | |
1113 | ||
1114 | } | |
1115 | ||
1116 | if (mask & FSX_EXTSIZE) | |
1117 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
f13fae2d | 1118 | if (mask & FSX_XFLAGS) { |
25fe55e8 | 1119 | xfs_set_diflags(ip, fa->fsx_xflags); |
f13fae2d CH |
1120 | xfs_diflags_to_linux(ip); |
1121 | } | |
25fe55e8 | 1122 | |
dcd79a14 | 1123 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); |
25fe55e8 | 1124 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
25fe55e8 CH |
1125 | |
1126 | XFS_STATS_INC(xs_ig_attrchg); | |
1127 | ||
1128 | /* | |
1129 | * If this is a synchronous mount, make sure that the | |
1130 | * transaction goes to disk before returning to the user. | |
1131 | * This is slightly sub-optimal in that truncates require | |
1132 | * two sync transactions instead of one for wsync filesystems. | |
1133 | * One for the truncate and one for the timestamps since we | |
1134 | * don't want to change the timestamps unless we're sure the | |
1135 | * truncate worked. Truncates are less than 1% of the laddis | |
1136 | * mix so this probably isn't worth the trouble to optimize. | |
1137 | */ | |
1138 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1139 | xfs_trans_set_sync(tp); | |
1140 | code = xfs_trans_commit(tp, 0); | |
1141 | xfs_iunlock(ip, lock_flags); | |
1142 | ||
1143 | /* | |
1144 | * Release any dquot(s) the inode had kept before chown. | |
1145 | */ | |
7d095257 CH |
1146 | xfs_qm_dqrele(olddquot); |
1147 | xfs_qm_dqrele(udqp); | |
1148 | xfs_qm_dqrele(gdqp); | |
25fe55e8 | 1149 | |
288699fe | 1150 | return code; |
25fe55e8 CH |
1151 | |
1152 | error_return: | |
7d095257 CH |
1153 | xfs_qm_dqrele(udqp); |
1154 | xfs_qm_dqrele(gdqp); | |
25fe55e8 CH |
1155 | xfs_trans_cancel(tp, 0); |
1156 | if (lock_flags) | |
1157 | xfs_iunlock(ip, lock_flags); | |
1158 | return code; | |
1159 | } | |
1160 | ||
1da177e4 | 1161 | STATIC int |
df26cfe8 | 1162 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1163 | xfs_inode_t *ip, |
1164 | struct file *filp, | |
1da177e4 LT |
1165 | void __user *arg) |
1166 | { | |
1167 | struct fsxattr fa; | |
25fe55e8 | 1168 | unsigned int mask; |
df26cfe8 LM |
1169 | |
1170 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1171 | return -EFAULT; | |
1da177e4 | 1172 | |
25fe55e8 | 1173 | mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; |
df26cfe8 | 1174 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 | 1175 | mask |= FSX_NONBLOCK; |
1da177e4 | 1176 | |
25fe55e8 | 1177 | return -xfs_ioctl_setattr(ip, &fa, mask); |
df26cfe8 | 1178 | } |
1da177e4 | 1179 | |
df26cfe8 LM |
1180 | STATIC int |
1181 | xfs_ioc_getxflags( | |
1182 | xfs_inode_t *ip, | |
1183 | void __user *arg) | |
1184 | { | |
1185 | unsigned int flags; | |
1da177e4 | 1186 | |
df26cfe8 LM |
1187 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1188 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1189 | return -EFAULT; | |
1190 | return 0; | |
1191 | } | |
1da177e4 | 1192 | |
df26cfe8 LM |
1193 | STATIC int |
1194 | xfs_ioc_setxflags( | |
1195 | xfs_inode_t *ip, | |
1196 | struct file *filp, | |
1197 | void __user *arg) | |
1198 | { | |
25fe55e8 | 1199 | struct fsxattr fa; |
df26cfe8 | 1200 | unsigned int flags; |
25fe55e8 | 1201 | unsigned int mask; |
1da177e4 | 1202 | |
df26cfe8 LM |
1203 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1204 | return -EFAULT; | |
1da177e4 | 1205 | |
df26cfe8 LM |
1206 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1207 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1208 | FS_SYNC_FL)) | |
1209 | return -EOPNOTSUPP; | |
1da177e4 | 1210 | |
25fe55e8 | 1211 | mask = FSX_XFLAGS; |
df26cfe8 | 1212 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 CH |
1213 | mask |= FSX_NONBLOCK; |
1214 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); | |
1da177e4 | 1215 | |
25fe55e8 | 1216 | return -xfs_ioctl_setattr(ip, &fa, mask); |
1da177e4 LT |
1217 | } |
1218 | ||
8a7141a8 ES |
1219 | STATIC int |
1220 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) | |
1221 | { | |
1222 | struct getbmap __user *base = *ap; | |
1223 | ||
1224 | /* copy only getbmap portion (not getbmapx) */ | |
1225 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
1226 | return XFS_ERROR(EFAULT); | |
1227 | ||
1228 | *ap += sizeof(struct getbmap); | |
1229 | return 0; | |
1230 | } | |
1231 | ||
1da177e4 LT |
1232 | STATIC int |
1233 | xfs_ioc_getbmap( | |
993386c1 | 1234 | struct xfs_inode *ip, |
1da177e4 LT |
1235 | int ioflags, |
1236 | unsigned int cmd, | |
1237 | void __user *arg) | |
1238 | { | |
8a7141a8 | 1239 | struct getbmapx bmx; |
1da177e4 LT |
1240 | int error; |
1241 | ||
8a7141a8 | 1242 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
1da177e4 LT |
1243 | return -XFS_ERROR(EFAULT); |
1244 | ||
8a7141a8 | 1245 | if (bmx.bmv_count < 2) |
1da177e4 LT |
1246 | return -XFS_ERROR(EINVAL); |
1247 | ||
8a7141a8 | 1248 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
1da177e4 | 1249 | if (ioflags & IO_INVIS) |
8a7141a8 | 1250 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1251 | |
8a7141a8 ES |
1252 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
1253 | (struct getbmap *)arg+1); | |
1da177e4 LT |
1254 | if (error) |
1255 | return -error; | |
1256 | ||
8a7141a8 ES |
1257 | /* copy back header - only size of getbmap */ |
1258 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
1da177e4 LT |
1259 | return -XFS_ERROR(EFAULT); |
1260 | return 0; | |
1261 | } | |
1262 | ||
8a7141a8 ES |
1263 | STATIC int |
1264 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) | |
1265 | { | |
1266 | struct getbmapx __user *base = *ap; | |
1267 | ||
1268 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
1269 | return XFS_ERROR(EFAULT); | |
1270 | ||
1271 | *ap += sizeof(struct getbmapx); | |
1272 | return 0; | |
1273 | } | |
1274 | ||
1da177e4 LT |
1275 | STATIC int |
1276 | xfs_ioc_getbmapx( | |
993386c1 | 1277 | struct xfs_inode *ip, |
1da177e4 LT |
1278 | void __user *arg) |
1279 | { | |
1280 | struct getbmapx bmx; | |
1da177e4 LT |
1281 | int error; |
1282 | ||
1283 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1284 | return -XFS_ERROR(EFAULT); | |
1285 | ||
1286 | if (bmx.bmv_count < 2) | |
1287 | return -XFS_ERROR(EINVAL); | |
1288 | ||
8a7141a8 | 1289 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
1da177e4 LT |
1290 | return -XFS_ERROR(EINVAL); |
1291 | ||
8a7141a8 ES |
1292 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
1293 | (struct getbmapx *)arg+1); | |
1da177e4 LT |
1294 | if (error) |
1295 | return -error; | |
1296 | ||
8a7141a8 ES |
1297 | /* copy back header */ |
1298 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
1da177e4 LT |
1299 | return -XFS_ERROR(EFAULT); |
1300 | ||
1301 | return 0; | |
1302 | } | |
df26cfe8 | 1303 | |
4d4be482 CH |
1304 | /* |
1305 | * Note: some of the ioctl's return positive numbers as a | |
1306 | * byte count indicating success, such as readlink_by_handle. | |
1307 | * So we don't "sign flip" like most other routines. This means | |
1308 | * true errors need to be returned as a negative value. | |
1309 | */ | |
1310 | long | |
1311 | xfs_file_ioctl( | |
df26cfe8 | 1312 | struct file *filp, |
df26cfe8 | 1313 | unsigned int cmd, |
4d4be482 | 1314 | unsigned long p) |
df26cfe8 LM |
1315 | { |
1316 | struct inode *inode = filp->f_path.dentry->d_inode; | |
4d4be482 CH |
1317 | struct xfs_inode *ip = XFS_I(inode); |
1318 | struct xfs_mount *mp = ip->i_mount; | |
1319 | void __user *arg = (void __user *)p; | |
1320 | int ioflags = 0; | |
df26cfe8 LM |
1321 | int error; |
1322 | ||
4d4be482 CH |
1323 | if (filp->f_mode & FMODE_NOCMTIME) |
1324 | ioflags |= IO_INVIS; | |
df26cfe8 | 1325 | |
cca28fb8 | 1326 | trace_xfs_file_ioctl(ip); |
4d4be482 CH |
1327 | |
1328 | switch (cmd) { | |
a46db608 CH |
1329 | case FITRIM: |
1330 | return xfs_ioc_trim(mp, arg); | |
df26cfe8 LM |
1331 | case XFS_IOC_ALLOCSP: |
1332 | case XFS_IOC_FREESP: | |
1333 | case XFS_IOC_RESVSP: | |
1334 | case XFS_IOC_UNRESVSP: | |
1335 | case XFS_IOC_ALLOCSP64: | |
1336 | case XFS_IOC_FREESP64: | |
1337 | case XFS_IOC_RESVSP64: | |
44722352 DC |
1338 | case XFS_IOC_UNRESVSP64: |
1339 | case XFS_IOC_ZERO_RANGE: { | |
743bb465 | 1340 | xfs_flock64_t bf; |
df26cfe8 | 1341 | |
743bb465 | 1342 | if (copy_from_user(&bf, arg, sizeof(bf))) |
1343 | return -XFS_ERROR(EFAULT); | |
1344 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); | |
1345 | } | |
df26cfe8 LM |
1346 | case XFS_IOC_DIOINFO: { |
1347 | struct dioattr da; | |
1348 | xfs_buftarg_t *target = | |
1349 | XFS_IS_REALTIME_INODE(ip) ? | |
1350 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1351 | ||
1352 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; | |
1353 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); | |
1354 | ||
1355 | if (copy_to_user(arg, &da, sizeof(da))) | |
1356 | return -XFS_ERROR(EFAULT); | |
1357 | return 0; | |
1358 | } | |
1359 | ||
1360 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1361 | case XFS_IOC_FSBULKSTAT: | |
1362 | case XFS_IOC_FSINUMBERS: | |
1363 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1364 | ||
1365 | case XFS_IOC_FSGEOMETRY_V1: | |
1366 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1367 | ||
1368 | case XFS_IOC_FSGEOMETRY: | |
1369 | return xfs_ioc_fsgeometry(mp, arg); | |
1370 | ||
1371 | case XFS_IOC_GETVERSION: | |
1372 | return put_user(inode->i_generation, (int __user *)arg); | |
1373 | ||
1374 | case XFS_IOC_FSGETXATTR: | |
1375 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1376 | case XFS_IOC_FSGETXATTRA: | |
1377 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1378 | case XFS_IOC_FSSETXATTR: |
1379 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1380 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1381 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1382 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1383 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1384 | |
1385 | case XFS_IOC_FSSETDM: { | |
1386 | struct fsdmidata dmi; | |
1387 | ||
1388 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
1389 | return -XFS_ERROR(EFAULT); | |
1390 | ||
1391 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, | |
1392 | dmi.fsd_dmstate); | |
1393 | return -error; | |
1394 | } | |
1395 | ||
1396 | case XFS_IOC_GETBMAP: | |
1397 | case XFS_IOC_GETBMAPA: | |
1398 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1399 | ||
1400 | case XFS_IOC_GETBMAPX: | |
1401 | return xfs_ioc_getbmapx(ip, arg); | |
1402 | ||
1403 | case XFS_IOC_FD_TO_HANDLE: | |
1404 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1405 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1406 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1407 | |
743bb465 | 1408 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
1409 | return -XFS_ERROR(EFAULT); | |
1410 | return xfs_find_handle(cmd, &hreq); | |
1411 | } | |
1412 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1413 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1414 | |
743bb465 | 1415 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1416 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1417 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1418 | } |
df26cfe8 | 1419 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1420 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1421 | |
743bb465 | 1422 | case XFS_IOC_READLINK_BY_HANDLE: { |
1423 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1424 | |
743bb465 | 1425 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1426 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1427 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1428 | } |
df26cfe8 | 1429 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1430 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1431 | |
1432 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1433 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1434 | |
1435 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1436 | struct xfs_swapext sxp; |
1437 | ||
1438 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
1439 | return -XFS_ERROR(EFAULT); | |
1440 | error = xfs_swapext(&sxp); | |
df26cfe8 LM |
1441 | return -error; |
1442 | } | |
1443 | ||
1444 | case XFS_IOC_FSCOUNTS: { | |
1445 | xfs_fsop_counts_t out; | |
1446 | ||
1447 | error = xfs_fs_counts(mp, &out); | |
1448 | if (error) | |
1449 | return -error; | |
1450 | ||
1451 | if (copy_to_user(arg, &out, sizeof(out))) | |
1452 | return -XFS_ERROR(EFAULT); | |
1453 | return 0; | |
1454 | } | |
1455 | ||
1456 | case XFS_IOC_SET_RESBLKS: { | |
1457 | xfs_fsop_resblks_t inout; | |
1458 | __uint64_t in; | |
1459 | ||
1460 | if (!capable(CAP_SYS_ADMIN)) | |
1461 | return -EPERM; | |
1462 | ||
d5db0f97 ES |
1463 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
1464 | return -XFS_ERROR(EROFS); | |
1465 | ||
df26cfe8 LM |
1466 | if (copy_from_user(&inout, arg, sizeof(inout))) |
1467 | return -XFS_ERROR(EFAULT); | |
1468 | ||
1469 | /* input parameter is passed in resblks field of structure */ | |
1470 | in = inout.resblks; | |
1471 | error = xfs_reserve_blocks(mp, &in, &inout); | |
1472 | if (error) | |
1473 | return -error; | |
1474 | ||
1475 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
1476 | return -XFS_ERROR(EFAULT); | |
1477 | return 0; | |
1478 | } | |
1479 | ||
1480 | case XFS_IOC_GET_RESBLKS: { | |
1481 | xfs_fsop_resblks_t out; | |
1482 | ||
1483 | if (!capable(CAP_SYS_ADMIN)) | |
1484 | return -EPERM; | |
1485 | ||
1486 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1487 | if (error) | |
1488 | return -error; | |
1489 | ||
1490 | if (copy_to_user(arg, &out, sizeof(out))) | |
1491 | return -XFS_ERROR(EFAULT); | |
1492 | ||
1493 | return 0; | |
1494 | } | |
1495 | ||
1496 | case XFS_IOC_FSGROWFSDATA: { | |
1497 | xfs_growfs_data_t in; | |
1498 | ||
df26cfe8 LM |
1499 | if (copy_from_user(&in, arg, sizeof(in))) |
1500 | return -XFS_ERROR(EFAULT); | |
1501 | ||
1502 | error = xfs_growfs_data(mp, &in); | |
1503 | return -error; | |
1504 | } | |
1505 | ||
1506 | case XFS_IOC_FSGROWFSLOG: { | |
1507 | xfs_growfs_log_t in; | |
1508 | ||
df26cfe8 LM |
1509 | if (copy_from_user(&in, arg, sizeof(in))) |
1510 | return -XFS_ERROR(EFAULT); | |
1511 | ||
1512 | error = xfs_growfs_log(mp, &in); | |
1513 | return -error; | |
1514 | } | |
1515 | ||
1516 | case XFS_IOC_FSGROWFSRT: { | |
1517 | xfs_growfs_rt_t in; | |
1518 | ||
df26cfe8 LM |
1519 | if (copy_from_user(&in, arg, sizeof(in))) |
1520 | return -XFS_ERROR(EFAULT); | |
1521 | ||
1522 | error = xfs_growfs_rt(mp, &in); | |
1523 | return -error; | |
1524 | } | |
1525 | ||
df26cfe8 LM |
1526 | case XFS_IOC_GOINGDOWN: { |
1527 | __uint32_t in; | |
1528 | ||
1529 | if (!capable(CAP_SYS_ADMIN)) | |
1530 | return -EPERM; | |
1531 | ||
1532 | if (get_user(in, (__uint32_t __user *)arg)) | |
1533 | return -XFS_ERROR(EFAULT); | |
1534 | ||
1535 | error = xfs_fs_goingdown(mp, in); | |
1536 | return -error; | |
1537 | } | |
1538 | ||
1539 | case XFS_IOC_ERROR_INJECTION: { | |
1540 | xfs_error_injection_t in; | |
1541 | ||
1542 | if (!capable(CAP_SYS_ADMIN)) | |
1543 | return -EPERM; | |
1544 | ||
1545 | if (copy_from_user(&in, arg, sizeof(in))) | |
1546 | return -XFS_ERROR(EFAULT); | |
1547 | ||
1548 | error = xfs_errortag_add(in.errtag, mp); | |
1549 | return -error; | |
1550 | } | |
1551 | ||
1552 | case XFS_IOC_ERROR_CLEARALL: | |
1553 | if (!capable(CAP_SYS_ADMIN)) | |
1554 | return -EPERM; | |
1555 | ||
1556 | error = xfs_errortag_clearall(mp, 1); | |
1557 | return -error; | |
1558 | ||
1559 | default: | |
1560 | return -ENOTTY; | |
1561 | } | |
1562 | } |