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" |
1da177e4 LT |
20 | #include "xfs_log.h" |
21 | #include "xfs_trans.h" | |
22 | #include "xfs_sb.h" | |
a844f451 | 23 | #include "xfs_ag.h" |
1da177e4 | 24 | #include "xfs_alloc.h" |
1da177e4 | 25 | #include "xfs_mount.h" |
1da177e4 | 26 | #include "xfs_bmap_btree.h" |
1da177e4 LT |
27 | #include "xfs_dinode.h" |
28 | #include "xfs_inode.h" | |
7bf446f8 | 29 | #include "xfs_ioctl.h" |
1da177e4 | 30 | #include "xfs_rtalloc.h" |
1da177e4 | 31 | #include "xfs_itable.h" |
a844f451 | 32 | #include "xfs_error.h" |
1da177e4 | 33 | #include "xfs_attr.h" |
a844f451 | 34 | #include "xfs_bmap.h" |
1da177e4 LT |
35 | #include "xfs_buf_item.h" |
36 | #include "xfs_utils.h" | |
37 | #include "xfs_dfrag.h" | |
38 | #include "xfs_fsops.h" | |
993386c1 | 39 | #include "xfs_vnodeops.h" |
a46db608 | 40 | #include "xfs_discard.h" |
25fe55e8 CH |
41 | #include "xfs_quota.h" |
42 | #include "xfs_inode_item.h" | |
d296d30a | 43 | #include "xfs_export.h" |
0b1b213f | 44 | #include "xfs_trace.h" |
1da177e4 | 45 | |
16f7e0fe | 46 | #include <linux/capability.h> |
1da177e4 LT |
47 | #include <linux/dcache.h> |
48 | #include <linux/mount.h> | |
49 | #include <linux/namei.h> | |
50 | #include <linux/pagemap.h> | |
5a0e3ad6 | 51 | #include <linux/slab.h> |
d296d30a | 52 | #include <linux/exportfs.h> |
1da177e4 LT |
53 | |
54 | /* | |
55 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
56 | * a file or fs handle. | |
57 | * | |
58 | * XFS_IOC_PATH_TO_FSHANDLE | |
59 | * returns fs handle for a mount point or path within that mount point | |
60 | * XFS_IOC_FD_TO_HANDLE | |
61 | * returns full handle for a FD opened in user space | |
62 | * XFS_IOC_PATH_TO_HANDLE | |
63 | * returns full handle for a path | |
64 | */ | |
d5547f9f | 65 | int |
1da177e4 LT |
66 | xfs_find_handle( |
67 | unsigned int cmd, | |
743bb465 | 68 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
69 | { |
70 | int hsize; | |
71 | xfs_handle_t handle; | |
1da177e4 | 72 | struct inode *inode; |
4346cdd4 CH |
73 | struct file *file = NULL; |
74 | struct path path; | |
64e09fa2 | 75 | int error, fput_needed; |
4346cdd4 | 76 | struct xfs_inode *ip; |
1da177e4 | 77 | |
4346cdd4 | 78 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
64e09fa2 | 79 | file = fget_light(hreq->fd, &fput_needed); |
1da177e4 | 80 | if (!file) |
4346cdd4 CH |
81 | return -EBADF; |
82 | inode = file->f_path.dentry->d_inode; | |
83 | } else { | |
84 | error = user_lpath((const char __user *)hreq->path, &path); | |
85 | if (error) | |
86 | return error; | |
87 | inode = path.dentry->d_inode; | |
1da177e4 | 88 | } |
4346cdd4 CH |
89 | ip = XFS_I(inode); |
90 | ||
91 | /* | |
92 | * We can only generate handles for inodes residing on a XFS filesystem, | |
93 | * and only for regular files, directories or symbolic links. | |
94 | */ | |
95 | error = -EINVAL; | |
96 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
97 | goto out_put; | |
98 | ||
99 | error = -EBADF; | |
100 | if (!S_ISREG(inode->i_mode) && | |
101 | !S_ISDIR(inode->i_mode) && | |
102 | !S_ISLNK(inode->i_mode)) | |
103 | goto out_put; | |
104 | ||
105 | ||
106 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
107 | ||
108 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
109 | /* | |
110 | * This handle only contains an fsid, zero the rest. | |
111 | */ | |
112 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
113 | hsize = sizeof(xfs_fsid_t); | |
114 | } else { | |
1da177e4 LT |
115 | int lock_mode; |
116 | ||
1da177e4 | 117 | lock_mode = xfs_ilock_map_shared(ip); |
c6143911 CH |
118 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
119 | sizeof(handle.ha_fid.fid_len); | |
120 | handle.ha_fid.fid_pad = 0; | |
121 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
122 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
123 | xfs_iunlock_map_shared(ip, lock_mode); |
124 | ||
125 | hsize = XFS_HSIZE(handle); | |
126 | } | |
127 | ||
4346cdd4 | 128 | error = -EFAULT; |
743bb465 | 129 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
130 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
131 | goto out_put; | |
1da177e4 | 132 | |
4346cdd4 CH |
133 | error = 0; |
134 | ||
135 | out_put: | |
136 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
64e09fa2 | 137 | fput_light(file, fput_needed); |
4346cdd4 CH |
138 | else |
139 | path_put(&path); | |
140 | return error; | |
1da177e4 LT |
141 | } |
142 | ||
1da177e4 | 143 | /* |
d296d30a CH |
144 | * No need to do permission checks on the various pathname components |
145 | * as the handle operations are privileged. | |
1da177e4 LT |
146 | */ |
147 | STATIC int | |
d296d30a CH |
148 | xfs_handle_acceptable( |
149 | void *context, | |
150 | struct dentry *dentry) | |
151 | { | |
152 | return 1; | |
153 | } | |
154 | ||
155 | /* | |
156 | * Convert userspace handle data into a dentry. | |
157 | */ | |
158 | struct dentry * | |
159 | xfs_handle_to_dentry( | |
160 | struct file *parfilp, | |
161 | void __user *uhandle, | |
162 | u32 hlen) | |
1da177e4 | 163 | { |
1da177e4 | 164 | xfs_handle_t handle; |
d296d30a | 165 | struct xfs_fid64 fid; |
1da177e4 LT |
166 | |
167 | /* | |
168 | * Only allow handle opens under a directory. | |
169 | */ | |
d296d30a CH |
170 | if (!S_ISDIR(parfilp->f_path.dentry->d_inode->i_mode)) |
171 | return ERR_PTR(-ENOTDIR); | |
172 | ||
173 | if (hlen != sizeof(xfs_handle_t)) | |
174 | return ERR_PTR(-EINVAL); | |
175 | if (copy_from_user(&handle, uhandle, hlen)) | |
176 | return ERR_PTR(-EFAULT); | |
177 | if (handle.ha_fid.fid_len != | |
178 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
179 | return ERR_PTR(-EINVAL); | |
180 | ||
181 | memset(&fid, 0, sizeof(struct fid)); | |
182 | fid.ino = handle.ha_fid.fid_ino; | |
183 | fid.gen = handle.ha_fid.fid_gen; | |
184 | ||
185 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
186 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
187 | xfs_handle_acceptable, NULL); | |
188 | } | |
1da177e4 | 189 | |
d296d30a CH |
190 | STATIC struct dentry * |
191 | xfs_handlereq_to_dentry( | |
192 | struct file *parfilp, | |
193 | xfs_fsop_handlereq_t *hreq) | |
194 | { | |
195 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
196 | } |
197 | ||
d5547f9f | 198 | int |
1da177e4 | 199 | xfs_open_by_handle( |
1da177e4 | 200 | struct file *parfilp, |
d296d30a | 201 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 202 | { |
745ca247 | 203 | const struct cred *cred = current_cred(); |
1da177e4 | 204 | int error; |
d296d30a | 205 | int fd; |
1da177e4 LT |
206 | int permflag; |
207 | struct file *filp; | |
208 | struct inode *inode; | |
209 | struct dentry *dentry; | |
1a1d7724 | 210 | fmode_t fmode; |
765927b2 | 211 | struct path path; |
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 | |
743bb465 | 231 | permflag = hreq->oflags; |
1a1d7724 | 232 | fmode = OPEN_FMODE(permflag); |
1da177e4 | 233 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && |
1a1d7724 | 234 | (fmode & FMODE_WRITE) && IS_APPEND(inode)) { |
d296d30a CH |
235 | error = -XFS_ERROR(EPERM); |
236 | goto out_dput; | |
1da177e4 LT |
237 | } |
238 | ||
1a1d7724 | 239 | if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { |
d296d30a CH |
240 | error = -XFS_ERROR(EACCES); |
241 | goto out_dput; | |
1da177e4 LT |
242 | } |
243 | ||
244 | /* Can't write directories. */ | |
1a1d7724 | 245 | if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) { |
d296d30a CH |
246 | error = -XFS_ERROR(EISDIR); |
247 | goto out_dput; | |
1da177e4 LT |
248 | } |
249 | ||
d296d30a CH |
250 | fd = get_unused_fd(); |
251 | if (fd < 0) { | |
252 | error = fd; | |
253 | goto out_dput; | |
1da177e4 LT |
254 | } |
255 | ||
765927b2 AV |
256 | path.mnt = parfilp->f_path.mnt; |
257 | path.dentry = dentry; | |
258 | filp = dentry_open(&path, hreq->oflags, cred); | |
259 | dput(dentry); | |
1da177e4 | 260 | if (IS_ERR(filp)) { |
d296d30a CH |
261 | put_unused_fd(fd); |
262 | return PTR_ERR(filp); | |
1da177e4 | 263 | } |
4d4be482 | 264 | |
03209378 | 265 | if (S_ISREG(inode->i_mode)) { |
2e2e7bb1 | 266 | filp->f_flags |= O_NOATIME; |
4d4be482 | 267 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 268 | } |
1da177e4 | 269 | |
d296d30a CH |
270 | fd_install(fd, filp); |
271 | return fd; | |
272 | ||
273 | out_dput: | |
274 | dput(dentry); | |
275 | return error; | |
1da177e4 LT |
276 | } |
277 | ||
804c83c3 CH |
278 | /* |
279 | * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's | |
280 | * unused first argument. | |
281 | */ | |
282 | STATIC int | |
283 | do_readlink( | |
284 | char __user *buffer, | |
285 | int buflen, | |
286 | const char *link) | |
287 | { | |
288 | int len; | |
289 | ||
290 | len = PTR_ERR(link); | |
291 | if (IS_ERR(link)) | |
292 | goto out; | |
293 | ||
294 | len = strlen(link); | |
295 | if (len > (unsigned) buflen) | |
296 | len = buflen; | |
297 | if (copy_to_user(buffer, link, len)) | |
298 | len = -EFAULT; | |
299 | out: | |
300 | return len; | |
301 | } | |
302 | ||
303 | ||
d5547f9f | 304 | int |
1da177e4 | 305 | xfs_readlink_by_handle( |
d296d30a CH |
306 | struct file *parfilp, |
307 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 308 | { |
d296d30a | 309 | struct dentry *dentry; |
1da177e4 | 310 | __u32 olen; |
804c83c3 CH |
311 | void *link; |
312 | int error; | |
1da177e4 LT |
313 | |
314 | if (!capable(CAP_SYS_ADMIN)) | |
315 | return -XFS_ERROR(EPERM); | |
1da177e4 | 316 | |
d296d30a CH |
317 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
318 | if (IS_ERR(dentry)) | |
319 | return PTR_ERR(dentry); | |
1da177e4 LT |
320 | |
321 | /* Restrict this handle operation to symlinks only. */ | |
d296d30a | 322 | if (!S_ISLNK(dentry->d_inode->i_mode)) { |
804c83c3 | 323 | error = -XFS_ERROR(EINVAL); |
d296d30a | 324 | goto out_dput; |
1da177e4 LT |
325 | } |
326 | ||
743bb465 | 327 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
804c83c3 | 328 | error = -XFS_ERROR(EFAULT); |
d296d30a | 329 | goto out_dput; |
1da177e4 | 330 | } |
1da177e4 | 331 | |
804c83c3 | 332 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
d296d30a CH |
333 | if (!link) { |
334 | error = -XFS_ERROR(ENOMEM); | |
335 | goto out_dput; | |
336 | } | |
1da177e4 | 337 | |
d296d30a | 338 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
67fcaa73 | 339 | if (error) |
804c83c3 | 340 | goto out_kfree; |
743bb465 | 341 | error = do_readlink(hreq->ohandle, olen, link); |
804c83c3 CH |
342 | if (error) |
343 | goto out_kfree; | |
67fcaa73 | 344 | |
804c83c3 CH |
345 | out_kfree: |
346 | kfree(link); | |
d296d30a CH |
347 | out_dput: |
348 | dput(dentry); | |
804c83c3 | 349 | return error; |
1da177e4 LT |
350 | } |
351 | ||
352 | STATIC int | |
353 | xfs_fssetdm_by_handle( | |
d296d30a CH |
354 | struct file *parfilp, |
355 | void __user *arg) | |
1da177e4 LT |
356 | { |
357 | int error; | |
358 | struct fsdmidata fsd; | |
359 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 360 | struct dentry *dentry; |
1da177e4 LT |
361 | |
362 | if (!capable(CAP_MKNOD)) | |
363 | return -XFS_ERROR(EPERM); | |
364 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
365 | return -XFS_ERROR(EFAULT); | |
366 | ||
d9457dc0 JK |
367 | error = mnt_want_write_file(parfilp); |
368 | if (error) | |
369 | return error; | |
370 | ||
d296d30a | 371 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
d9457dc0 JK |
372 | if (IS_ERR(dentry)) { |
373 | mnt_drop_write_file(parfilp); | |
d296d30a | 374 | return PTR_ERR(dentry); |
d9457dc0 | 375 | } |
1da177e4 | 376 | |
d296d30a | 377 | if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { |
6e7f75ea CH |
378 | error = -XFS_ERROR(EPERM); |
379 | goto out; | |
1da177e4 LT |
380 | } |
381 | ||
382 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
6e7f75ea CH |
383 | error = -XFS_ERROR(EFAULT); |
384 | goto out; | |
1da177e4 LT |
385 | } |
386 | ||
d296d30a | 387 | error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, |
6e7f75ea | 388 | fsd.fsd_dmstate); |
1da177e4 | 389 | |
6e7f75ea | 390 | out: |
d9457dc0 | 391 | mnt_drop_write_file(parfilp); |
d296d30a | 392 | dput(dentry); |
6e7f75ea | 393 | return error; |
1da177e4 LT |
394 | } |
395 | ||
396 | STATIC int | |
397 | xfs_attrlist_by_handle( | |
d296d30a CH |
398 | struct file *parfilp, |
399 | void __user *arg) | |
1da177e4 | 400 | { |
d296d30a | 401 | int error = -ENOMEM; |
1da177e4 LT |
402 | attrlist_cursor_kern_t *cursor; |
403 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
d296d30a | 404 | struct dentry *dentry; |
1da177e4 LT |
405 | char *kbuf; |
406 | ||
407 | if (!capable(CAP_SYS_ADMIN)) | |
408 | return -XFS_ERROR(EPERM); | |
409 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
410 | return -XFS_ERROR(EFAULT); | |
411 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
412 | return -XFS_ERROR(EINVAL); | |
413 | ||
90ad58a8 CH |
414 | /* |
415 | * Reject flags, only allow namespaces. | |
416 | */ | |
417 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
418 | return -XFS_ERROR(EINVAL); | |
419 | ||
d296d30a CH |
420 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
421 | if (IS_ERR(dentry)) | |
422 | return PTR_ERR(dentry); | |
1da177e4 | 423 | |
6762b938 | 424 | kbuf = kzalloc(al_hreq.buflen, GFP_KERNEL); |
1da177e4 | 425 | if (!kbuf) |
d296d30a | 426 | goto out_dput; |
1da177e4 LT |
427 | |
428 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
d296d30a | 429 | error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, |
739bfb2a | 430 | al_hreq.flags, cursor); |
1da177e4 LT |
431 | if (error) |
432 | goto out_kfree; | |
433 | ||
434 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
435 | error = -EFAULT; | |
436 | ||
437 | out_kfree: | |
438 | kfree(kbuf); | |
d296d30a CH |
439 | out_dput: |
440 | dput(dentry); | |
441 | return error; | |
1da177e4 LT |
442 | } |
443 | ||
28750975 | 444 | int |
1da177e4 | 445 | xfs_attrmulti_attr_get( |
739bfb2a | 446 | struct inode *inode, |
a9273ca5 DC |
447 | unsigned char *name, |
448 | unsigned char __user *ubuf, | |
1da177e4 LT |
449 | __uint32_t *len, |
450 | __uint32_t flags) | |
451 | { | |
a9273ca5 | 452 | unsigned char *kbuf; |
1da177e4 | 453 | int error = EFAULT; |
e8b0ebaa | 454 | |
1da177e4 LT |
455 | if (*len > XATTR_SIZE_MAX) |
456 | return EINVAL; | |
ad650f5b DC |
457 | kbuf = kmem_zalloc(*len, KM_SLEEP | KM_MAYFAIL); |
458 | if (!kbuf) { | |
459 | kbuf = kmem_zalloc_large(*len); | |
460 | if (!kbuf) | |
461 | return ENOMEM; | |
462 | } | |
1da177e4 | 463 | |
e8b0ebaa | 464 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
465 | if (error) |
466 | goto out_kfree; | |
467 | ||
468 | if (copy_to_user(ubuf, kbuf, *len)) | |
469 | error = EFAULT; | |
470 | ||
471 | out_kfree: | |
ad650f5b DC |
472 | if (is_vmalloc_addr(kbuf)) |
473 | kmem_free_large(kbuf); | |
474 | else | |
475 | kmem_free(kbuf); | |
1da177e4 LT |
476 | return error; |
477 | } | |
478 | ||
28750975 | 479 | int |
1da177e4 | 480 | xfs_attrmulti_attr_set( |
739bfb2a | 481 | struct inode *inode, |
a9273ca5 DC |
482 | unsigned char *name, |
483 | const unsigned char __user *ubuf, | |
1da177e4 LT |
484 | __uint32_t len, |
485 | __uint32_t flags) | |
486 | { | |
a9273ca5 | 487 | unsigned char *kbuf; |
1da177e4 LT |
488 | int error = EFAULT; |
489 | ||
739bfb2a | 490 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
491 | return EPERM; |
492 | if (len > XATTR_SIZE_MAX) | |
493 | return EINVAL; | |
494 | ||
0e639bde LZ |
495 | kbuf = memdup_user(ubuf, len); |
496 | if (IS_ERR(kbuf)) | |
497 | return PTR_ERR(kbuf); | |
e8b0ebaa | 498 | |
739bfb2a | 499 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 | 500 | |
1da177e4 LT |
501 | return error; |
502 | } | |
503 | ||
28750975 | 504 | int |
1da177e4 | 505 | xfs_attrmulti_attr_remove( |
739bfb2a | 506 | struct inode *inode, |
a9273ca5 | 507 | unsigned char *name, |
1da177e4 LT |
508 | __uint32_t flags) |
509 | { | |
739bfb2a | 510 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 511 | return EPERM; |
739bfb2a | 512 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
513 | } |
514 | ||
515 | STATIC int | |
516 | xfs_attrmulti_by_handle( | |
42a74f20 | 517 | struct file *parfilp, |
d296d30a | 518 | void __user *arg) |
1da177e4 LT |
519 | { |
520 | int error; | |
521 | xfs_attr_multiop_t *ops; | |
522 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 523 | struct dentry *dentry; |
1da177e4 | 524 | unsigned int i, size; |
a9273ca5 | 525 | unsigned char *attr_name; |
1da177e4 LT |
526 | |
527 | if (!capable(CAP_SYS_ADMIN)) | |
528 | return -XFS_ERROR(EPERM); | |
529 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
530 | return -XFS_ERROR(EFAULT); | |
531 | ||
fda168c2 ZW |
532 | /* overflow check */ |
533 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) | |
534 | return -E2BIG; | |
535 | ||
d296d30a CH |
536 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
537 | if (IS_ERR(dentry)) | |
538 | return PTR_ERR(dentry); | |
1da177e4 LT |
539 | |
540 | error = E2BIG; | |
e182f57a | 541 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 542 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 543 | goto out_dput; |
1da177e4 | 544 | |
0e639bde LZ |
545 | ops = memdup_user(am_hreq.ops, size); |
546 | if (IS_ERR(ops)) { | |
547 | error = PTR_ERR(ops); | |
d296d30a | 548 | goto out_dput; |
0e639bde | 549 | } |
1da177e4 LT |
550 | |
551 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
552 | if (!attr_name) | |
553 | goto out_kfree_ops; | |
554 | ||
1da177e4 LT |
555 | error = 0; |
556 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 557 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
558 | ops[i].am_attrname, MAXNAMELEN); |
559 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
560 | error = -ERANGE; | |
561 | if (ops[i].am_error < 0) | |
562 | break; | |
563 | ||
564 | switch (ops[i].am_opcode) { | |
565 | case ATTR_OP_GET: | |
d296d30a CH |
566 | ops[i].am_error = xfs_attrmulti_attr_get( |
567 | dentry->d_inode, attr_name, | |
568 | ops[i].am_attrvalue, &ops[i].am_length, | |
569 | ops[i].am_flags); | |
1da177e4 LT |
570 | break; |
571 | case ATTR_OP_SET: | |
a561be71 | 572 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
573 | if (ops[i].am_error) |
574 | break; | |
d296d30a CH |
575 | ops[i].am_error = xfs_attrmulti_attr_set( |
576 | dentry->d_inode, attr_name, | |
577 | ops[i].am_attrvalue, ops[i].am_length, | |
578 | ops[i].am_flags); | |
2a79f17e | 579 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
580 | break; |
581 | case ATTR_OP_REMOVE: | |
a561be71 | 582 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
583 | if (ops[i].am_error) |
584 | break; | |
d296d30a CH |
585 | ops[i].am_error = xfs_attrmulti_attr_remove( |
586 | dentry->d_inode, attr_name, | |
587 | ops[i].am_flags); | |
2a79f17e | 588 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
589 | break; |
590 | default: | |
591 | ops[i].am_error = EINVAL; | |
592 | } | |
593 | } | |
594 | ||
595 | if (copy_to_user(am_hreq.ops, ops, size)) | |
596 | error = XFS_ERROR(EFAULT); | |
597 | ||
598 | kfree(attr_name); | |
599 | out_kfree_ops: | |
600 | kfree(ops); | |
d296d30a CH |
601 | out_dput: |
602 | dput(dentry); | |
1da177e4 LT |
603 | return -error; |
604 | } | |
605 | ||
d5547f9f | 606 | int |
1da177e4 | 607 | xfs_ioc_space( |
993386c1 | 608 | struct xfs_inode *ip, |
f37ea149 | 609 | struct inode *inode, |
1da177e4 LT |
610 | struct file *filp, |
611 | int ioflags, | |
612 | unsigned int cmd, | |
743bb465 | 613 | xfs_flock64_t *bf) |
1da177e4 | 614 | { |
1da177e4 LT |
615 | int attr_flags = 0; |
616 | int error; | |
617 | ||
743bb465 | 618 | /* |
619 | * Only allow the sys admin to reserve space unless | |
620 | * unwritten extents are enabled. | |
621 | */ | |
622 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
623 | !capable(CAP_SYS_ADMIN)) | |
624 | return -XFS_ERROR(EPERM); | |
625 | ||
f37ea149 | 626 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
627 | return -XFS_ERROR(EPERM); |
628 | ||
ad4a8ac4 | 629 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
630 | return -XFS_ERROR(EBADF); |
631 | ||
f37ea149 | 632 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
633 | return -XFS_ERROR(EINVAL); |
634 | ||
1da177e4 | 635 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
0f285c8a | 636 | attr_flags |= XFS_ATTR_NONBLOCK; |
82878897 DC |
637 | |
638 | if (filp->f_flags & O_DSYNC) | |
639 | attr_flags |= XFS_ATTR_SYNC; | |
640 | ||
1da177e4 | 641 | if (ioflags & IO_INVIS) |
0f285c8a | 642 | attr_flags |= XFS_ATTR_DMI; |
1da177e4 | 643 | |
d9457dc0 JK |
644 | error = mnt_want_write_file(filp); |
645 | if (error) | |
646 | return error; | |
743bb465 | 647 | error = xfs_change_file_space(ip, cmd, bf, filp->f_pos, attr_flags); |
d9457dc0 | 648 | mnt_drop_write_file(filp); |
1da177e4 LT |
649 | return -error; |
650 | } | |
651 | ||
652 | STATIC int | |
653 | xfs_ioc_bulkstat( | |
654 | xfs_mount_t *mp, | |
655 | unsigned int cmd, | |
656 | void __user *arg) | |
657 | { | |
658 | xfs_fsop_bulkreq_t bulkreq; | |
659 | int count; /* # of records returned */ | |
660 | xfs_ino_t inlast; /* last inode number */ | |
661 | int done; | |
662 | int error; | |
663 | ||
664 | /* done = 1 if there are more stats to get and if bulkstat */ | |
665 | /* should be called again (unused here, but used in dmapi) */ | |
666 | ||
667 | if (!capable(CAP_SYS_ADMIN)) | |
668 | return -EPERM; | |
669 | ||
670 | if (XFS_FORCED_SHUTDOWN(mp)) | |
671 | return -XFS_ERROR(EIO); | |
672 | ||
673 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
674 | return -XFS_ERROR(EFAULT); | |
675 | ||
676 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
677 | return -XFS_ERROR(EFAULT); | |
678 | ||
679 | if ((count = bulkreq.icount) <= 0) | |
680 | return -XFS_ERROR(EINVAL); | |
681 | ||
cd57e594 LM |
682 | if (bulkreq.ubuffer == NULL) |
683 | return -XFS_ERROR(EINVAL); | |
684 | ||
1da177e4 LT |
685 | if (cmd == XFS_IOC_FSINUMBERS) |
686 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 687 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 LT |
688 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
689 | error = xfs_bulkstat_single(mp, &inlast, | |
690 | bulkreq.ubuffer, &done); | |
cd57e594 | 691 | else /* XFS_IOC_FSBULKSTAT */ |
7dce11db CH |
692 | error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, |
693 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
694 | &done); | |
1da177e4 LT |
695 | |
696 | if (error) | |
697 | return -error; | |
698 | ||
699 | if (bulkreq.ocount != NULL) { | |
700 | if (copy_to_user(bulkreq.lastip, &inlast, | |
701 | sizeof(xfs_ino_t))) | |
702 | return -XFS_ERROR(EFAULT); | |
703 | ||
704 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
705 | return -XFS_ERROR(EFAULT); | |
706 | } | |
707 | ||
708 | return 0; | |
709 | } | |
710 | ||
711 | STATIC int | |
712 | xfs_ioc_fsgeometry_v1( | |
713 | xfs_mount_t *mp, | |
714 | void __user *arg) | |
715 | { | |
eeb2036b | 716 | xfs_fsop_geom_t fsgeo; |
1da177e4 LT |
717 | int error; |
718 | ||
eeb2036b | 719 | error = xfs_fs_geometry(mp, &fsgeo, 3); |
1da177e4 LT |
720 | if (error) |
721 | return -error; | |
722 | ||
eeb2036b AE |
723 | /* |
724 | * Caller should have passed an argument of type | |
725 | * xfs_fsop_geom_v1_t. This is a proper subset of the | |
726 | * xfs_fsop_geom_t that xfs_fs_geometry() fills in. | |
727 | */ | |
728 | if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t))) | |
1da177e4 LT |
729 | return -XFS_ERROR(EFAULT); |
730 | return 0; | |
731 | } | |
732 | ||
733 | STATIC int | |
734 | xfs_ioc_fsgeometry( | |
735 | xfs_mount_t *mp, | |
736 | void __user *arg) | |
737 | { | |
738 | xfs_fsop_geom_t fsgeo; | |
739 | int error; | |
740 | ||
741 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
742 | if (error) | |
743 | return -error; | |
744 | ||
745 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
746 | return -XFS_ERROR(EFAULT); | |
747 | return 0; | |
748 | } | |
749 | ||
750 | /* | |
751 | * Linux extended inode flags interface. | |
752 | */ | |
1da177e4 LT |
753 | |
754 | STATIC unsigned int | |
755 | xfs_merge_ioc_xflags( | |
756 | unsigned int flags, | |
757 | unsigned int start) | |
758 | { | |
759 | unsigned int xflags = start; | |
760 | ||
39058a0e | 761 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
762 | xflags |= XFS_XFLAG_IMMUTABLE; |
763 | else | |
764 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 765 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
766 | xflags |= XFS_XFLAG_APPEND; |
767 | else | |
768 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 769 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
770 | xflags |= XFS_XFLAG_SYNC; |
771 | else | |
772 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 773 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
774 | xflags |= XFS_XFLAG_NOATIME; |
775 | else | |
776 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 777 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
778 | xflags |= XFS_XFLAG_NODUMP; |
779 | else | |
780 | xflags &= ~XFS_XFLAG_NODUMP; | |
781 | ||
782 | return xflags; | |
783 | } | |
784 | ||
785 | STATIC unsigned int | |
786 | xfs_di2lxflags( | |
787 | __uint16_t di_flags) | |
788 | { | |
789 | unsigned int flags = 0; | |
790 | ||
791 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 792 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 793 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 794 | flags |= FS_APPEND_FL; |
1da177e4 | 795 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 796 | flags |= FS_SYNC_FL; |
1da177e4 | 797 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 798 | flags |= FS_NOATIME_FL; |
1da177e4 | 799 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 800 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
801 | return flags; |
802 | } | |
803 | ||
c83bfab1 CH |
804 | STATIC int |
805 | xfs_ioc_fsgetxattr( | |
806 | xfs_inode_t *ip, | |
807 | int attr, | |
808 | void __user *arg) | |
809 | { | |
810 | struct fsxattr fa; | |
811 | ||
a122eb2f DR |
812 | memset(&fa, 0, sizeof(struct fsxattr)); |
813 | ||
c83bfab1 CH |
814 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
815 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
816 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
6743099c | 817 | fa.fsx_projid = xfs_get_projid(ip); |
c83bfab1 CH |
818 | |
819 | if (attr) { | |
820 | if (ip->i_afp) { | |
821 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
822 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
823 | sizeof(xfs_bmbt_rec_t); | |
824 | else | |
825 | fa.fsx_nextents = ip->i_d.di_anextents; | |
826 | } else | |
827 | fa.fsx_nextents = 0; | |
828 | } else { | |
829 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
830 | fa.fsx_nextents = ip->i_df.if_bytes / | |
831 | sizeof(xfs_bmbt_rec_t); | |
832 | else | |
833 | fa.fsx_nextents = ip->i_d.di_nextents; | |
834 | } | |
835 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
836 | ||
837 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
838 | return -EFAULT; | |
839 | return 0; | |
840 | } | |
841 | ||
25fe55e8 CH |
842 | STATIC void |
843 | xfs_set_diflags( | |
844 | struct xfs_inode *ip, | |
845 | unsigned int xflags) | |
846 | { | |
847 | unsigned int di_flags; | |
848 | ||
849 | /* can't set PREALLOC this way, just preserve it */ | |
850 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
851 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
852 | di_flags |= XFS_DIFLAG_IMMUTABLE; | |
853 | if (xflags & XFS_XFLAG_APPEND) | |
854 | di_flags |= XFS_DIFLAG_APPEND; | |
855 | if (xflags & XFS_XFLAG_SYNC) | |
856 | di_flags |= XFS_DIFLAG_SYNC; | |
857 | if (xflags & XFS_XFLAG_NOATIME) | |
858 | di_flags |= XFS_DIFLAG_NOATIME; | |
859 | if (xflags & XFS_XFLAG_NODUMP) | |
860 | di_flags |= XFS_DIFLAG_NODUMP; | |
861 | if (xflags & XFS_XFLAG_PROJINHERIT) | |
862 | di_flags |= XFS_DIFLAG_PROJINHERIT; | |
863 | if (xflags & XFS_XFLAG_NODEFRAG) | |
864 | di_flags |= XFS_DIFLAG_NODEFRAG; | |
865 | if (xflags & XFS_XFLAG_FILESTREAM) | |
866 | di_flags |= XFS_DIFLAG_FILESTREAM; | |
abbede1b | 867 | if (S_ISDIR(ip->i_d.di_mode)) { |
25fe55e8 CH |
868 | if (xflags & XFS_XFLAG_RTINHERIT) |
869 | di_flags |= XFS_DIFLAG_RTINHERIT; | |
870 | if (xflags & XFS_XFLAG_NOSYMLINKS) | |
871 | di_flags |= XFS_DIFLAG_NOSYMLINKS; | |
872 | if (xflags & XFS_XFLAG_EXTSZINHERIT) | |
873 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; | |
abbede1b | 874 | } else if (S_ISREG(ip->i_d.di_mode)) { |
25fe55e8 CH |
875 | if (xflags & XFS_XFLAG_REALTIME) |
876 | di_flags |= XFS_DIFLAG_REALTIME; | |
877 | if (xflags & XFS_XFLAG_EXTSIZE) | |
878 | di_flags |= XFS_DIFLAG_EXTSIZE; | |
879 | } | |
880 | ||
881 | ip->i_d.di_flags = di_flags; | |
882 | } | |
883 | ||
f13fae2d CH |
884 | STATIC void |
885 | xfs_diflags_to_linux( | |
886 | struct xfs_inode *ip) | |
887 | { | |
e4f75291 | 888 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
889 | unsigned int xflags = xfs_ip2xflags(ip); |
890 | ||
891 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
892 | inode->i_flags |= S_IMMUTABLE; | |
893 | else | |
894 | inode->i_flags &= ~S_IMMUTABLE; | |
895 | if (xflags & XFS_XFLAG_APPEND) | |
896 | inode->i_flags |= S_APPEND; | |
897 | else | |
898 | inode->i_flags &= ~S_APPEND; | |
899 | if (xflags & XFS_XFLAG_SYNC) | |
900 | inode->i_flags |= S_SYNC; | |
901 | else | |
902 | inode->i_flags &= ~S_SYNC; | |
903 | if (xflags & XFS_XFLAG_NOATIME) | |
904 | inode->i_flags |= S_NOATIME; | |
905 | else | |
906 | inode->i_flags &= ~S_NOATIME; | |
907 | } | |
25fe55e8 CH |
908 | |
909 | #define FSX_PROJID 1 | |
910 | #define FSX_EXTSIZE 2 | |
911 | #define FSX_XFLAGS 4 | |
912 | #define FSX_NONBLOCK 8 | |
913 | ||
914 | STATIC int | |
915 | xfs_ioctl_setattr( | |
916 | xfs_inode_t *ip, | |
917 | struct fsxattr *fa, | |
918 | int mask) | |
919 | { | |
920 | struct xfs_mount *mp = ip->i_mount; | |
921 | struct xfs_trans *tp; | |
922 | unsigned int lock_flags = 0; | |
7d095257 CH |
923 | struct xfs_dquot *udqp = NULL; |
924 | struct xfs_dquot *gdqp = NULL; | |
25fe55e8 CH |
925 | struct xfs_dquot *olddquot = NULL; |
926 | int code; | |
927 | ||
cca28fb8 | 928 | trace_xfs_ioctl_setattr(ip); |
25fe55e8 CH |
929 | |
930 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
931 | return XFS_ERROR(EROFS); | |
932 | if (XFS_FORCED_SHUTDOWN(mp)) | |
933 | return XFS_ERROR(EIO); | |
934 | ||
23963e54 | 935 | /* |
6743099c | 936 | * Disallow 32bit project ids when projid32bit feature is not enabled. |
23963e54 | 937 | */ |
6743099c AM |
938 | if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1) && |
939 | !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) | |
23963e54 AM |
940 | return XFS_ERROR(EINVAL); |
941 | ||
25fe55e8 CH |
942 | /* |
943 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
944 | * before we start any other transactions. Trying to do this later | |
945 | * is messy. We don't care to take a readlock to look at the ids | |
946 | * in inode here, because we can't hold it across the trans_reserve. | |
947 | * If the IDs do change before we take the ilock, we're covered | |
948 | * because the i_*dquot fields will get updated anyway. | |
949 | */ | |
950 | if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { | |
7d095257 | 951 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
25fe55e8 CH |
952 | ip->i_d.di_gid, fa->fsx_projid, |
953 | XFS_QMOPT_PQUOTA, &udqp, &gdqp); | |
954 | if (code) | |
955 | return code; | |
956 | } | |
957 | ||
958 | /* | |
959 | * For the other attributes, we acquire the inode lock and | |
960 | * first do an error checking pass. | |
961 | */ | |
962 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
963 | code = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); | |
964 | if (code) | |
965 | goto error_return; | |
966 | ||
967 | lock_flags = XFS_ILOCK_EXCL; | |
968 | xfs_ilock(ip, lock_flags); | |
969 | ||
970 | /* | |
971 | * CAP_FOWNER overrides the following restrictions: | |
972 | * | |
973 | * The user ID of the calling process must be equal | |
974 | * to the file owner ID, except in cases where the | |
975 | * CAP_FSETID capability is applicable. | |
976 | */ | |
91b77712 | 977 | if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) { |
25fe55e8 CH |
978 | code = XFS_ERROR(EPERM); |
979 | goto error_return; | |
980 | } | |
981 | ||
982 | /* | |
983 | * Do a quota reservation only if projid is actually going to change. | |
984 | */ | |
985 | if (mask & FSX_PROJID) { | |
7d095257 CH |
986 | if (XFS_IS_QUOTA_RUNNING(mp) && |
987 | XFS_IS_PQUOTA_ON(mp) && | |
6743099c | 988 | xfs_get_projid(ip) != fa->fsx_projid) { |
25fe55e8 | 989 | ASSERT(tp); |
7d095257 | 990 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, |
25fe55e8 CH |
991 | capable(CAP_FOWNER) ? |
992 | XFS_QMOPT_FORCE_RES : 0); | |
993 | if (code) /* out of quota */ | |
994 | goto error_return; | |
995 | } | |
996 | } | |
997 | ||
998 | if (mask & FSX_EXTSIZE) { | |
999 | /* | |
1000 | * Can't change extent size if any extents are allocated. | |
1001 | */ | |
1002 | if (ip->i_d.di_nextents && | |
1003 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != | |
1004 | fa->fsx_extsize)) { | |
1005 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1006 | goto error_return; | |
1007 | } | |
1008 | ||
1009 | /* | |
1010 | * Extent size must be a multiple of the appropriate block | |
5315837d DC |
1011 | * size, if set at all. It must also be smaller than the |
1012 | * maximum extent size supported by the filesystem. | |
1013 | * | |
1014 | * Also, for non-realtime files, limit the extent size hint to | |
1015 | * half the size of the AGs in the filesystem so alignment | |
1016 | * doesn't result in extents larger than an AG. | |
25fe55e8 CH |
1017 | */ |
1018 | if (fa->fsx_extsize != 0) { | |
5315837d DC |
1019 | xfs_extlen_t size; |
1020 | xfs_fsblock_t extsize_fsb; | |
1021 | ||
1022 | extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); | |
1023 | if (extsize_fsb > MAXEXTLEN) { | |
1024 | code = XFS_ERROR(EINVAL); | |
1025 | goto error_return; | |
1026 | } | |
25fe55e8 CH |
1027 | |
1028 | if (XFS_IS_REALTIME_INODE(ip) || | |
1029 | ((mask & FSX_XFLAGS) && | |
1030 | (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { | |
1031 | size = mp->m_sb.sb_rextsize << | |
1032 | mp->m_sb.sb_blocklog; | |
1033 | } else { | |
1034 | size = mp->m_sb.sb_blocksize; | |
5315837d DC |
1035 | if (extsize_fsb > mp->m_sb.sb_agblocks / 2) { |
1036 | code = XFS_ERROR(EINVAL); | |
1037 | goto error_return; | |
1038 | } | |
25fe55e8 CH |
1039 | } |
1040 | ||
1041 | if (fa->fsx_extsize % size) { | |
1042 | code = XFS_ERROR(EINVAL); | |
1043 | goto error_return; | |
1044 | } | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | ||
1049 | if (mask & FSX_XFLAGS) { | |
1050 | /* | |
1051 | * Can't change realtime flag if any extents are allocated. | |
1052 | */ | |
1053 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
1054 | (XFS_IS_REALTIME_INODE(ip)) != | |
1055 | (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1056 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1057 | goto error_return; | |
1058 | } | |
1059 | ||
1060 | /* | |
1061 | * If realtime flag is set then must have realtime data. | |
1062 | */ | |
1063 | if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1064 | if ((mp->m_sb.sb_rblocks == 0) || | |
1065 | (mp->m_sb.sb_rextsize == 0) || | |
1066 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { | |
1067 | code = XFS_ERROR(EINVAL); | |
1068 | goto error_return; | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | /* | |
1073 | * Can't modify an immutable/append-only file unless | |
1074 | * we have appropriate permission. | |
1075 | */ | |
1076 | if ((ip->i_d.di_flags & | |
1077 | (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || | |
1078 | (fa->fsx_xflags & | |
1079 | (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && | |
1080 | !capable(CAP_LINUX_IMMUTABLE)) { | |
1081 | code = XFS_ERROR(EPERM); | |
1082 | goto error_return; | |
1083 | } | |
1084 | } | |
1085 | ||
ddc3415a | 1086 | xfs_trans_ijoin(tp, ip, 0); |
25fe55e8 CH |
1087 | |
1088 | /* | |
1089 | * Change file ownership. Must be the owner or privileged. | |
25fe55e8 CH |
1090 | */ |
1091 | if (mask & FSX_PROJID) { | |
1092 | /* | |
1093 | * CAP_FSETID overrides the following restrictions: | |
1094 | * | |
1095 | * The set-user-ID and set-group-ID bits of a file will be | |
1096 | * cleared upon successful return from chown() | |
1097 | */ | |
1098 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
1099 | !capable(CAP_FSETID)) | |
1100 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
1101 | ||
1102 | /* | |
1103 | * Change the ownerships and register quota modifications | |
1104 | * in the transaction. | |
1105 | */ | |
6743099c | 1106 | if (xfs_get_projid(ip) != fa->fsx_projid) { |
7d095257 CH |
1107 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { |
1108 | olddquot = xfs_qm_vop_chown(tp, ip, | |
25fe55e8 CH |
1109 | &ip->i_gdquot, gdqp); |
1110 | } | |
6743099c | 1111 | xfs_set_projid(ip, fa->fsx_projid); |
25fe55e8 CH |
1112 | |
1113 | /* | |
1114 | * We may have to rev the inode as well as | |
1115 | * the superblock version number since projids didn't | |
1116 | * exist before DINODE_VERSION_2 and SB_VERSION_NLINK. | |
1117 | */ | |
51ce16d5 | 1118 | if (ip->i_d.di_version == 1) |
25fe55e8 CH |
1119 | xfs_bump_ino_vers2(tp, ip); |
1120 | } | |
1121 | ||
1122 | } | |
1123 | ||
1124 | if (mask & FSX_EXTSIZE) | |
1125 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
f13fae2d | 1126 | if (mask & FSX_XFLAGS) { |
25fe55e8 | 1127 | xfs_set_diflags(ip, fa->fsx_xflags); |
f13fae2d CH |
1128 | xfs_diflags_to_linux(ip); |
1129 | } | |
25fe55e8 | 1130 | |
dcd79a14 | 1131 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); |
25fe55e8 | 1132 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
25fe55e8 CH |
1133 | |
1134 | XFS_STATS_INC(xs_ig_attrchg); | |
1135 | ||
1136 | /* | |
1137 | * If this is a synchronous mount, make sure that the | |
1138 | * transaction goes to disk before returning to the user. | |
1139 | * This is slightly sub-optimal in that truncates require | |
1140 | * two sync transactions instead of one for wsync filesystems. | |
1141 | * One for the truncate and one for the timestamps since we | |
1142 | * don't want to change the timestamps unless we're sure the | |
1143 | * truncate worked. Truncates are less than 1% of the laddis | |
1144 | * mix so this probably isn't worth the trouble to optimize. | |
1145 | */ | |
1146 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1147 | xfs_trans_set_sync(tp); | |
1148 | code = xfs_trans_commit(tp, 0); | |
1149 | xfs_iunlock(ip, lock_flags); | |
1150 | ||
1151 | /* | |
1152 | * Release any dquot(s) the inode had kept before chown. | |
1153 | */ | |
7d095257 CH |
1154 | xfs_qm_dqrele(olddquot); |
1155 | xfs_qm_dqrele(udqp); | |
1156 | xfs_qm_dqrele(gdqp); | |
25fe55e8 | 1157 | |
288699fe | 1158 | return code; |
25fe55e8 CH |
1159 | |
1160 | error_return: | |
7d095257 CH |
1161 | xfs_qm_dqrele(udqp); |
1162 | xfs_qm_dqrele(gdqp); | |
25fe55e8 CH |
1163 | xfs_trans_cancel(tp, 0); |
1164 | if (lock_flags) | |
1165 | xfs_iunlock(ip, lock_flags); | |
1166 | return code; | |
1167 | } | |
1168 | ||
1da177e4 | 1169 | STATIC int |
df26cfe8 | 1170 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1171 | xfs_inode_t *ip, |
1172 | struct file *filp, | |
1da177e4 LT |
1173 | void __user *arg) |
1174 | { | |
1175 | struct fsxattr fa; | |
25fe55e8 | 1176 | unsigned int mask; |
d9457dc0 | 1177 | int error; |
df26cfe8 LM |
1178 | |
1179 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1180 | return -EFAULT; | |
1da177e4 | 1181 | |
25fe55e8 | 1182 | mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; |
df26cfe8 | 1183 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 | 1184 | mask |= FSX_NONBLOCK; |
1da177e4 | 1185 | |
d9457dc0 JK |
1186 | error = mnt_want_write_file(filp); |
1187 | if (error) | |
1188 | return error; | |
1189 | error = xfs_ioctl_setattr(ip, &fa, mask); | |
1190 | mnt_drop_write_file(filp); | |
1191 | return -error; | |
df26cfe8 | 1192 | } |
1da177e4 | 1193 | |
df26cfe8 LM |
1194 | STATIC int |
1195 | xfs_ioc_getxflags( | |
1196 | xfs_inode_t *ip, | |
1197 | void __user *arg) | |
1198 | { | |
1199 | unsigned int flags; | |
1da177e4 | 1200 | |
df26cfe8 LM |
1201 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1202 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1203 | return -EFAULT; | |
1204 | return 0; | |
1205 | } | |
1da177e4 | 1206 | |
df26cfe8 LM |
1207 | STATIC int |
1208 | xfs_ioc_setxflags( | |
1209 | xfs_inode_t *ip, | |
1210 | struct file *filp, | |
1211 | void __user *arg) | |
1212 | { | |
25fe55e8 | 1213 | struct fsxattr fa; |
df26cfe8 | 1214 | unsigned int flags; |
25fe55e8 | 1215 | unsigned int mask; |
d9457dc0 | 1216 | int error; |
1da177e4 | 1217 | |
df26cfe8 LM |
1218 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1219 | return -EFAULT; | |
1da177e4 | 1220 | |
df26cfe8 LM |
1221 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1222 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1223 | FS_SYNC_FL)) | |
1224 | return -EOPNOTSUPP; | |
1da177e4 | 1225 | |
25fe55e8 | 1226 | mask = FSX_XFLAGS; |
df26cfe8 | 1227 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 CH |
1228 | mask |= FSX_NONBLOCK; |
1229 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); | |
1da177e4 | 1230 | |
d9457dc0 JK |
1231 | error = mnt_want_write_file(filp); |
1232 | if (error) | |
1233 | return error; | |
1234 | error = xfs_ioctl_setattr(ip, &fa, mask); | |
1235 | mnt_drop_write_file(filp); | |
1236 | return -error; | |
1da177e4 LT |
1237 | } |
1238 | ||
8a7141a8 ES |
1239 | STATIC int |
1240 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) | |
1241 | { | |
1242 | struct getbmap __user *base = *ap; | |
1243 | ||
1244 | /* copy only getbmap portion (not getbmapx) */ | |
1245 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
1246 | return XFS_ERROR(EFAULT); | |
1247 | ||
1248 | *ap += sizeof(struct getbmap); | |
1249 | return 0; | |
1250 | } | |
1251 | ||
1da177e4 LT |
1252 | STATIC int |
1253 | xfs_ioc_getbmap( | |
993386c1 | 1254 | struct xfs_inode *ip, |
1da177e4 LT |
1255 | int ioflags, |
1256 | unsigned int cmd, | |
1257 | void __user *arg) | |
1258 | { | |
8a7141a8 | 1259 | struct getbmapx bmx; |
1da177e4 LT |
1260 | int error; |
1261 | ||
8a7141a8 | 1262 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
1da177e4 LT |
1263 | return -XFS_ERROR(EFAULT); |
1264 | ||
8a7141a8 | 1265 | if (bmx.bmv_count < 2) |
1da177e4 LT |
1266 | return -XFS_ERROR(EINVAL); |
1267 | ||
8a7141a8 | 1268 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
1da177e4 | 1269 | if (ioflags & IO_INVIS) |
8a7141a8 | 1270 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1271 | |
8a7141a8 ES |
1272 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
1273 | (struct getbmap *)arg+1); | |
1da177e4 LT |
1274 | if (error) |
1275 | return -error; | |
1276 | ||
8a7141a8 ES |
1277 | /* copy back header - only size of getbmap */ |
1278 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
1da177e4 LT |
1279 | return -XFS_ERROR(EFAULT); |
1280 | return 0; | |
1281 | } | |
1282 | ||
8a7141a8 ES |
1283 | STATIC int |
1284 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) | |
1285 | { | |
1286 | struct getbmapx __user *base = *ap; | |
1287 | ||
1288 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
1289 | return XFS_ERROR(EFAULT); | |
1290 | ||
1291 | *ap += sizeof(struct getbmapx); | |
1292 | return 0; | |
1293 | } | |
1294 | ||
1da177e4 LT |
1295 | STATIC int |
1296 | xfs_ioc_getbmapx( | |
993386c1 | 1297 | struct xfs_inode *ip, |
1da177e4 LT |
1298 | void __user *arg) |
1299 | { | |
1300 | struct getbmapx bmx; | |
1da177e4 LT |
1301 | int error; |
1302 | ||
1303 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1304 | return -XFS_ERROR(EFAULT); | |
1305 | ||
1306 | if (bmx.bmv_count < 2) | |
1307 | return -XFS_ERROR(EINVAL); | |
1308 | ||
8a7141a8 | 1309 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
1da177e4 LT |
1310 | return -XFS_ERROR(EINVAL); |
1311 | ||
8a7141a8 ES |
1312 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
1313 | (struct getbmapx *)arg+1); | |
1da177e4 LT |
1314 | if (error) |
1315 | return -error; | |
1316 | ||
8a7141a8 ES |
1317 | /* copy back header */ |
1318 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
1da177e4 LT |
1319 | return -XFS_ERROR(EFAULT); |
1320 | ||
1321 | return 0; | |
1322 | } | |
df26cfe8 | 1323 | |
4d4be482 CH |
1324 | /* |
1325 | * Note: some of the ioctl's return positive numbers as a | |
1326 | * byte count indicating success, such as readlink_by_handle. | |
1327 | * So we don't "sign flip" like most other routines. This means | |
1328 | * true errors need to be returned as a negative value. | |
1329 | */ | |
1330 | long | |
1331 | xfs_file_ioctl( | |
df26cfe8 | 1332 | struct file *filp, |
df26cfe8 | 1333 | unsigned int cmd, |
4d4be482 | 1334 | unsigned long p) |
df26cfe8 LM |
1335 | { |
1336 | struct inode *inode = filp->f_path.dentry->d_inode; | |
4d4be482 CH |
1337 | struct xfs_inode *ip = XFS_I(inode); |
1338 | struct xfs_mount *mp = ip->i_mount; | |
1339 | void __user *arg = (void __user *)p; | |
1340 | int ioflags = 0; | |
df26cfe8 LM |
1341 | int error; |
1342 | ||
4d4be482 CH |
1343 | if (filp->f_mode & FMODE_NOCMTIME) |
1344 | ioflags |= IO_INVIS; | |
df26cfe8 | 1345 | |
cca28fb8 | 1346 | trace_xfs_file_ioctl(ip); |
4d4be482 CH |
1347 | |
1348 | switch (cmd) { | |
a46db608 CH |
1349 | case FITRIM: |
1350 | return xfs_ioc_trim(mp, arg); | |
df26cfe8 LM |
1351 | case XFS_IOC_ALLOCSP: |
1352 | case XFS_IOC_FREESP: | |
1353 | case XFS_IOC_RESVSP: | |
1354 | case XFS_IOC_UNRESVSP: | |
1355 | case XFS_IOC_ALLOCSP64: | |
1356 | case XFS_IOC_FREESP64: | |
1357 | case XFS_IOC_RESVSP64: | |
44722352 DC |
1358 | case XFS_IOC_UNRESVSP64: |
1359 | case XFS_IOC_ZERO_RANGE: { | |
743bb465 | 1360 | xfs_flock64_t bf; |
df26cfe8 | 1361 | |
743bb465 | 1362 | if (copy_from_user(&bf, arg, sizeof(bf))) |
1363 | return -XFS_ERROR(EFAULT); | |
1364 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); | |
1365 | } | |
df26cfe8 LM |
1366 | case XFS_IOC_DIOINFO: { |
1367 | struct dioattr da; | |
1368 | xfs_buftarg_t *target = | |
1369 | XFS_IS_REALTIME_INODE(ip) ? | |
1370 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1371 | ||
1372 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; | |
1373 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); | |
1374 | ||
1375 | if (copy_to_user(arg, &da, sizeof(da))) | |
1376 | return -XFS_ERROR(EFAULT); | |
1377 | return 0; | |
1378 | } | |
1379 | ||
1380 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1381 | case XFS_IOC_FSBULKSTAT: | |
1382 | case XFS_IOC_FSINUMBERS: | |
1383 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1384 | ||
1385 | case XFS_IOC_FSGEOMETRY_V1: | |
1386 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1387 | ||
1388 | case XFS_IOC_FSGEOMETRY: | |
1389 | return xfs_ioc_fsgeometry(mp, arg); | |
1390 | ||
1391 | case XFS_IOC_GETVERSION: | |
1392 | return put_user(inode->i_generation, (int __user *)arg); | |
1393 | ||
1394 | case XFS_IOC_FSGETXATTR: | |
1395 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1396 | case XFS_IOC_FSGETXATTRA: | |
1397 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1398 | case XFS_IOC_FSSETXATTR: |
1399 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1400 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1401 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1402 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1403 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1404 | |
1405 | case XFS_IOC_FSSETDM: { | |
1406 | struct fsdmidata dmi; | |
1407 | ||
1408 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
1409 | return -XFS_ERROR(EFAULT); | |
1410 | ||
d9457dc0 JK |
1411 | error = mnt_want_write_file(filp); |
1412 | if (error) | |
1413 | return error; | |
1414 | ||
df26cfe8 LM |
1415 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, |
1416 | dmi.fsd_dmstate); | |
d9457dc0 | 1417 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1418 | return -error; |
1419 | } | |
1420 | ||
1421 | case XFS_IOC_GETBMAP: | |
1422 | case XFS_IOC_GETBMAPA: | |
1423 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1424 | ||
1425 | case XFS_IOC_GETBMAPX: | |
1426 | return xfs_ioc_getbmapx(ip, arg); | |
1427 | ||
1428 | case XFS_IOC_FD_TO_HANDLE: | |
1429 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1430 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1431 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1432 | |
743bb465 | 1433 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
1434 | return -XFS_ERROR(EFAULT); | |
1435 | return xfs_find_handle(cmd, &hreq); | |
1436 | } | |
1437 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1438 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1439 | |
743bb465 | 1440 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1441 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1442 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1443 | } |
df26cfe8 | 1444 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1445 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1446 | |
743bb465 | 1447 | case XFS_IOC_READLINK_BY_HANDLE: { |
1448 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1449 | |
743bb465 | 1450 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1451 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1452 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1453 | } |
df26cfe8 | 1454 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1455 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1456 | |
1457 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1458 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1459 | |
1460 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1461 | struct xfs_swapext sxp; |
1462 | ||
1463 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
1464 | return -XFS_ERROR(EFAULT); | |
d9457dc0 JK |
1465 | error = mnt_want_write_file(filp); |
1466 | if (error) | |
1467 | return error; | |
743bb465 | 1468 | error = xfs_swapext(&sxp); |
d9457dc0 | 1469 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1470 | return -error; |
1471 | } | |
1472 | ||
1473 | case XFS_IOC_FSCOUNTS: { | |
1474 | xfs_fsop_counts_t out; | |
1475 | ||
1476 | error = xfs_fs_counts(mp, &out); | |
1477 | if (error) | |
1478 | return -error; | |
1479 | ||
1480 | if (copy_to_user(arg, &out, sizeof(out))) | |
1481 | return -XFS_ERROR(EFAULT); | |
1482 | return 0; | |
1483 | } | |
1484 | ||
1485 | case XFS_IOC_SET_RESBLKS: { | |
1486 | xfs_fsop_resblks_t inout; | |
1487 | __uint64_t in; | |
1488 | ||
1489 | if (!capable(CAP_SYS_ADMIN)) | |
1490 | return -EPERM; | |
1491 | ||
d5db0f97 ES |
1492 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
1493 | return -XFS_ERROR(EROFS); | |
1494 | ||
df26cfe8 LM |
1495 | if (copy_from_user(&inout, arg, sizeof(inout))) |
1496 | return -XFS_ERROR(EFAULT); | |
1497 | ||
d9457dc0 JK |
1498 | error = mnt_want_write_file(filp); |
1499 | if (error) | |
1500 | return error; | |
1501 | ||
df26cfe8 LM |
1502 | /* input parameter is passed in resblks field of structure */ |
1503 | in = inout.resblks; | |
1504 | error = xfs_reserve_blocks(mp, &in, &inout); | |
d9457dc0 | 1505 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1506 | if (error) |
1507 | return -error; | |
1508 | ||
1509 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
1510 | return -XFS_ERROR(EFAULT); | |
1511 | return 0; | |
1512 | } | |
1513 | ||
1514 | case XFS_IOC_GET_RESBLKS: { | |
1515 | xfs_fsop_resblks_t out; | |
1516 | ||
1517 | if (!capable(CAP_SYS_ADMIN)) | |
1518 | return -EPERM; | |
1519 | ||
1520 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1521 | if (error) | |
1522 | return -error; | |
1523 | ||
1524 | if (copy_to_user(arg, &out, sizeof(out))) | |
1525 | return -XFS_ERROR(EFAULT); | |
1526 | ||
1527 | return 0; | |
1528 | } | |
1529 | ||
1530 | case XFS_IOC_FSGROWFSDATA: { | |
1531 | xfs_growfs_data_t in; | |
1532 | ||
df26cfe8 LM |
1533 | if (copy_from_user(&in, arg, sizeof(in))) |
1534 | return -XFS_ERROR(EFAULT); | |
1535 | ||
d9457dc0 JK |
1536 | error = mnt_want_write_file(filp); |
1537 | if (error) | |
1538 | return error; | |
df26cfe8 | 1539 | error = xfs_growfs_data(mp, &in); |
d9457dc0 | 1540 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1541 | return -error; |
1542 | } | |
1543 | ||
1544 | case XFS_IOC_FSGROWFSLOG: { | |
1545 | xfs_growfs_log_t in; | |
1546 | ||
df26cfe8 LM |
1547 | if (copy_from_user(&in, arg, sizeof(in))) |
1548 | return -XFS_ERROR(EFAULT); | |
1549 | ||
d9457dc0 JK |
1550 | error = mnt_want_write_file(filp); |
1551 | if (error) | |
1552 | return error; | |
df26cfe8 | 1553 | error = xfs_growfs_log(mp, &in); |
d9457dc0 | 1554 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1555 | return -error; |
1556 | } | |
1557 | ||
1558 | case XFS_IOC_FSGROWFSRT: { | |
1559 | xfs_growfs_rt_t in; | |
1560 | ||
df26cfe8 LM |
1561 | if (copy_from_user(&in, arg, sizeof(in))) |
1562 | return -XFS_ERROR(EFAULT); | |
1563 | ||
d9457dc0 JK |
1564 | error = mnt_want_write_file(filp); |
1565 | if (error) | |
1566 | return error; | |
df26cfe8 | 1567 | error = xfs_growfs_rt(mp, &in); |
d9457dc0 | 1568 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1569 | return -error; |
1570 | } | |
1571 | ||
df26cfe8 LM |
1572 | case XFS_IOC_GOINGDOWN: { |
1573 | __uint32_t in; | |
1574 | ||
1575 | if (!capable(CAP_SYS_ADMIN)) | |
1576 | return -EPERM; | |
1577 | ||
1578 | if (get_user(in, (__uint32_t __user *)arg)) | |
1579 | return -XFS_ERROR(EFAULT); | |
1580 | ||
1581 | error = xfs_fs_goingdown(mp, in); | |
1582 | return -error; | |
1583 | } | |
1584 | ||
1585 | case XFS_IOC_ERROR_INJECTION: { | |
1586 | xfs_error_injection_t in; | |
1587 | ||
1588 | if (!capable(CAP_SYS_ADMIN)) | |
1589 | return -EPERM; | |
1590 | ||
1591 | if (copy_from_user(&in, arg, sizeof(in))) | |
1592 | return -XFS_ERROR(EFAULT); | |
1593 | ||
1594 | error = xfs_errortag_add(in.errtag, mp); | |
1595 | return -error; | |
1596 | } | |
1597 | ||
1598 | case XFS_IOC_ERROR_CLEARALL: | |
1599 | if (!capable(CAP_SYS_ADMIN)) | |
1600 | return -EPERM; | |
1601 | ||
1602 | error = xfs_errortag_clearall(mp, 1); | |
1603 | return -error; | |
1604 | ||
1605 | default: | |
1606 | return -ENOTTY; | |
1607 | } | |
1608 | } |