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" |
8ca149de | 45 | #include "xfs_icache.h" |
1da177e4 | 46 | |
16f7e0fe | 47 | #include <linux/capability.h> |
1da177e4 LT |
48 | #include <linux/dcache.h> |
49 | #include <linux/mount.h> | |
50 | #include <linux/namei.h> | |
51 | #include <linux/pagemap.h> | |
5a0e3ad6 | 52 | #include <linux/slab.h> |
d296d30a | 53 | #include <linux/exportfs.h> |
1da177e4 LT |
54 | |
55 | /* | |
56 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
57 | * a file or fs handle. | |
58 | * | |
59 | * XFS_IOC_PATH_TO_FSHANDLE | |
60 | * returns fs handle for a mount point or path within that mount point | |
61 | * XFS_IOC_FD_TO_HANDLE | |
62 | * returns full handle for a FD opened in user space | |
63 | * XFS_IOC_PATH_TO_HANDLE | |
64 | * returns full handle for a path | |
65 | */ | |
d5547f9f | 66 | int |
1da177e4 LT |
67 | xfs_find_handle( |
68 | unsigned int cmd, | |
743bb465 | 69 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
70 | { |
71 | int hsize; | |
72 | xfs_handle_t handle; | |
1da177e4 | 73 | struct inode *inode; |
531c3bdc | 74 | struct fd f = {0}; |
4346cdd4 | 75 | struct path path; |
2903ff01 | 76 | int error; |
4346cdd4 | 77 | struct xfs_inode *ip; |
1da177e4 | 78 | |
4346cdd4 | 79 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
2903ff01 AV |
80 | f = fdget(hreq->fd); |
81 | if (!f.file) | |
4346cdd4 | 82 | return -EBADF; |
496ad9aa | 83 | inode = file_inode(f.file); |
4346cdd4 CH |
84 | } else { |
85 | error = user_lpath((const char __user *)hreq->path, &path); | |
86 | if (error) | |
87 | return error; | |
88 | inode = path.dentry->d_inode; | |
1da177e4 | 89 | } |
4346cdd4 CH |
90 | ip = XFS_I(inode); |
91 | ||
92 | /* | |
93 | * We can only generate handles for inodes residing on a XFS filesystem, | |
94 | * and only for regular files, directories or symbolic links. | |
95 | */ | |
96 | error = -EINVAL; | |
97 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
98 | goto out_put; | |
99 | ||
100 | error = -EBADF; | |
101 | if (!S_ISREG(inode->i_mode) && | |
102 | !S_ISDIR(inode->i_mode) && | |
103 | !S_ISLNK(inode->i_mode)) | |
104 | goto out_put; | |
105 | ||
106 | ||
107 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
108 | ||
109 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
110 | /* | |
111 | * This handle only contains an fsid, zero the rest. | |
112 | */ | |
113 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
114 | hsize = sizeof(xfs_fsid_t); | |
115 | } else { | |
1da177e4 LT |
116 | int lock_mode; |
117 | ||
1da177e4 | 118 | lock_mode = xfs_ilock_map_shared(ip); |
c6143911 CH |
119 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
120 | sizeof(handle.ha_fid.fid_len); | |
121 | handle.ha_fid.fid_pad = 0; | |
122 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
123 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
124 | xfs_iunlock_map_shared(ip, lock_mode); |
125 | ||
126 | hsize = XFS_HSIZE(handle); | |
127 | } | |
128 | ||
4346cdd4 | 129 | error = -EFAULT; |
743bb465 | 130 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
131 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
132 | goto out_put; | |
1da177e4 | 133 | |
4346cdd4 CH |
134 | error = 0; |
135 | ||
136 | out_put: | |
137 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
2903ff01 | 138 | fdput(f); |
4346cdd4 CH |
139 | else |
140 | path_put(&path); | |
141 | return error; | |
1da177e4 LT |
142 | } |
143 | ||
1da177e4 | 144 | /* |
d296d30a CH |
145 | * No need to do permission checks on the various pathname components |
146 | * as the handle operations are privileged. | |
1da177e4 LT |
147 | */ |
148 | STATIC int | |
d296d30a CH |
149 | xfs_handle_acceptable( |
150 | void *context, | |
151 | struct dentry *dentry) | |
152 | { | |
153 | return 1; | |
154 | } | |
155 | ||
156 | /* | |
157 | * Convert userspace handle data into a dentry. | |
158 | */ | |
159 | struct dentry * | |
160 | xfs_handle_to_dentry( | |
161 | struct file *parfilp, | |
162 | void __user *uhandle, | |
163 | u32 hlen) | |
1da177e4 | 164 | { |
1da177e4 | 165 | xfs_handle_t handle; |
d296d30a | 166 | struct xfs_fid64 fid; |
1da177e4 LT |
167 | |
168 | /* | |
169 | * Only allow handle opens under a directory. | |
170 | */ | |
496ad9aa | 171 | if (!S_ISDIR(file_inode(parfilp)->i_mode)) |
d296d30a CH |
172 | return ERR_PTR(-ENOTDIR); |
173 | ||
174 | if (hlen != sizeof(xfs_handle_t)) | |
175 | return ERR_PTR(-EINVAL); | |
176 | if (copy_from_user(&handle, uhandle, hlen)) | |
177 | return ERR_PTR(-EFAULT); | |
178 | if (handle.ha_fid.fid_len != | |
179 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
180 | return ERR_PTR(-EINVAL); | |
181 | ||
182 | memset(&fid, 0, sizeof(struct fid)); | |
183 | fid.ino = handle.ha_fid.fid_ino; | |
184 | fid.gen = handle.ha_fid.fid_gen; | |
185 | ||
186 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
187 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
188 | xfs_handle_acceptable, NULL); | |
189 | } | |
1da177e4 | 190 | |
d296d30a CH |
191 | STATIC struct dentry * |
192 | xfs_handlereq_to_dentry( | |
193 | struct file *parfilp, | |
194 | xfs_fsop_handlereq_t *hreq) | |
195 | { | |
196 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
197 | } |
198 | ||
d5547f9f | 199 | int |
1da177e4 | 200 | xfs_open_by_handle( |
1da177e4 | 201 | struct file *parfilp, |
d296d30a | 202 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 203 | { |
745ca247 | 204 | const struct cred *cred = current_cred(); |
1da177e4 | 205 | int error; |
d296d30a | 206 | int fd; |
1da177e4 LT |
207 | int permflag; |
208 | struct file *filp; | |
209 | struct inode *inode; | |
210 | struct dentry *dentry; | |
1a1d7724 | 211 | fmode_t fmode; |
765927b2 | 212 | struct path path; |
1da177e4 LT |
213 | |
214 | if (!capable(CAP_SYS_ADMIN)) | |
215 | return -XFS_ERROR(EPERM); | |
1da177e4 | 216 | |
d296d30a CH |
217 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
218 | if (IS_ERR(dentry)) | |
219 | return PTR_ERR(dentry); | |
220 | inode = dentry->d_inode; | |
1da177e4 LT |
221 | |
222 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
223 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
d296d30a CH |
224 | error = -XFS_ERROR(EPERM); |
225 | goto out_dput; | |
1da177e4 LT |
226 | } |
227 | ||
228 | #if BITS_PER_LONG != 32 | |
743bb465 | 229 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 230 | #endif |
d296d30a | 231 | |
743bb465 | 232 | permflag = hreq->oflags; |
1a1d7724 | 233 | fmode = OPEN_FMODE(permflag); |
1da177e4 | 234 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && |
1a1d7724 | 235 | (fmode & FMODE_WRITE) && IS_APPEND(inode)) { |
d296d30a CH |
236 | error = -XFS_ERROR(EPERM); |
237 | goto out_dput; | |
1da177e4 LT |
238 | } |
239 | ||
1a1d7724 | 240 | if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { |
d296d30a CH |
241 | error = -XFS_ERROR(EACCES); |
242 | goto out_dput; | |
1da177e4 LT |
243 | } |
244 | ||
245 | /* Can't write directories. */ | |
1a1d7724 | 246 | if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) { |
d296d30a CH |
247 | error = -XFS_ERROR(EISDIR); |
248 | goto out_dput; | |
1da177e4 LT |
249 | } |
250 | ||
d296d30a CH |
251 | fd = get_unused_fd(); |
252 | if (fd < 0) { | |
253 | error = fd; | |
254 | goto out_dput; | |
1da177e4 LT |
255 | } |
256 | ||
765927b2 AV |
257 | path.mnt = parfilp->f_path.mnt; |
258 | path.dentry = dentry; | |
259 | filp = dentry_open(&path, hreq->oflags, cred); | |
260 | dput(dentry); | |
1da177e4 | 261 | if (IS_ERR(filp)) { |
d296d30a CH |
262 | put_unused_fd(fd); |
263 | return PTR_ERR(filp); | |
1da177e4 | 264 | } |
4d4be482 | 265 | |
03209378 | 266 | if (S_ISREG(inode->i_mode)) { |
2e2e7bb1 | 267 | filp->f_flags |= O_NOATIME; |
4d4be482 | 268 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 269 | } |
1da177e4 | 270 | |
d296d30a CH |
271 | fd_install(fd, filp); |
272 | return fd; | |
273 | ||
274 | out_dput: | |
275 | dput(dentry); | |
276 | return error; | |
1da177e4 LT |
277 | } |
278 | ||
804c83c3 CH |
279 | /* |
280 | * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's | |
281 | * unused first argument. | |
282 | */ | |
283 | STATIC int | |
284 | do_readlink( | |
285 | char __user *buffer, | |
286 | int buflen, | |
287 | const char *link) | |
288 | { | |
289 | int len; | |
290 | ||
291 | len = PTR_ERR(link); | |
292 | if (IS_ERR(link)) | |
293 | goto out; | |
294 | ||
295 | len = strlen(link); | |
296 | if (len > (unsigned) buflen) | |
297 | len = buflen; | |
298 | if (copy_to_user(buffer, link, len)) | |
299 | len = -EFAULT; | |
300 | out: | |
301 | return len; | |
302 | } | |
303 | ||
304 | ||
d5547f9f | 305 | int |
1da177e4 | 306 | xfs_readlink_by_handle( |
d296d30a CH |
307 | struct file *parfilp, |
308 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 309 | { |
d296d30a | 310 | struct dentry *dentry; |
1da177e4 | 311 | __u32 olen; |
804c83c3 CH |
312 | void *link; |
313 | int error; | |
1da177e4 LT |
314 | |
315 | if (!capable(CAP_SYS_ADMIN)) | |
316 | return -XFS_ERROR(EPERM); | |
1da177e4 | 317 | |
d296d30a CH |
318 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
319 | if (IS_ERR(dentry)) | |
320 | return PTR_ERR(dentry); | |
1da177e4 LT |
321 | |
322 | /* Restrict this handle operation to symlinks only. */ | |
d296d30a | 323 | if (!S_ISLNK(dentry->d_inode->i_mode)) { |
804c83c3 | 324 | error = -XFS_ERROR(EINVAL); |
d296d30a | 325 | goto out_dput; |
1da177e4 LT |
326 | } |
327 | ||
743bb465 | 328 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
804c83c3 | 329 | error = -XFS_ERROR(EFAULT); |
d296d30a | 330 | goto out_dput; |
1da177e4 | 331 | } |
1da177e4 | 332 | |
804c83c3 | 333 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
d296d30a CH |
334 | if (!link) { |
335 | error = -XFS_ERROR(ENOMEM); | |
336 | goto out_dput; | |
337 | } | |
1da177e4 | 338 | |
d296d30a | 339 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
67fcaa73 | 340 | if (error) |
804c83c3 | 341 | goto out_kfree; |
743bb465 | 342 | error = do_readlink(hreq->ohandle, olen, link); |
804c83c3 CH |
343 | if (error) |
344 | goto out_kfree; | |
67fcaa73 | 345 | |
804c83c3 CH |
346 | out_kfree: |
347 | kfree(link); | |
d296d30a CH |
348 | out_dput: |
349 | dput(dentry); | |
804c83c3 | 350 | return error; |
1da177e4 LT |
351 | } |
352 | ||
353 | STATIC int | |
354 | xfs_fssetdm_by_handle( | |
d296d30a CH |
355 | struct file *parfilp, |
356 | void __user *arg) | |
1da177e4 LT |
357 | { |
358 | int error; | |
359 | struct fsdmidata fsd; | |
360 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 361 | struct dentry *dentry; |
1da177e4 LT |
362 | |
363 | if (!capable(CAP_MKNOD)) | |
364 | return -XFS_ERROR(EPERM); | |
365 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
366 | return -XFS_ERROR(EFAULT); | |
367 | ||
d9457dc0 JK |
368 | error = mnt_want_write_file(parfilp); |
369 | if (error) | |
370 | return error; | |
371 | ||
d296d30a | 372 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
d9457dc0 JK |
373 | if (IS_ERR(dentry)) { |
374 | mnt_drop_write_file(parfilp); | |
d296d30a | 375 | return PTR_ERR(dentry); |
d9457dc0 | 376 | } |
1da177e4 | 377 | |
d296d30a | 378 | if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { |
6e7f75ea CH |
379 | error = -XFS_ERROR(EPERM); |
380 | goto out; | |
1da177e4 LT |
381 | } |
382 | ||
383 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
6e7f75ea CH |
384 | error = -XFS_ERROR(EFAULT); |
385 | goto out; | |
1da177e4 LT |
386 | } |
387 | ||
d296d30a | 388 | error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, |
6e7f75ea | 389 | fsd.fsd_dmstate); |
1da177e4 | 390 | |
6e7f75ea | 391 | out: |
d9457dc0 | 392 | mnt_drop_write_file(parfilp); |
d296d30a | 393 | dput(dentry); |
6e7f75ea | 394 | return error; |
1da177e4 LT |
395 | } |
396 | ||
397 | STATIC int | |
398 | xfs_attrlist_by_handle( | |
d296d30a CH |
399 | struct file *parfilp, |
400 | void __user *arg) | |
1da177e4 | 401 | { |
d296d30a | 402 | int error = -ENOMEM; |
1da177e4 LT |
403 | attrlist_cursor_kern_t *cursor; |
404 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
d296d30a | 405 | struct dentry *dentry; |
1da177e4 LT |
406 | char *kbuf; |
407 | ||
408 | if (!capable(CAP_SYS_ADMIN)) | |
409 | return -XFS_ERROR(EPERM); | |
410 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
411 | return -XFS_ERROR(EFAULT); | |
412 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
413 | return -XFS_ERROR(EINVAL); | |
414 | ||
90ad58a8 CH |
415 | /* |
416 | * Reject flags, only allow namespaces. | |
417 | */ | |
418 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
419 | return -XFS_ERROR(EINVAL); | |
420 | ||
d296d30a CH |
421 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
422 | if (IS_ERR(dentry)) | |
423 | return PTR_ERR(dentry); | |
1da177e4 | 424 | |
dd700d94 ES |
425 | kbuf = kmem_zalloc(al_hreq.buflen, KM_SLEEP | KM_MAYFAIL); |
426 | if (!kbuf) { | |
427 | kbuf = kmem_zalloc_large(al_hreq.buflen); | |
428 | if (!kbuf) | |
429 | goto out_dput; | |
430 | } | |
1da177e4 LT |
431 | |
432 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
d296d30a | 433 | error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, |
739bfb2a | 434 | al_hreq.flags, cursor); |
1da177e4 LT |
435 | if (error) |
436 | goto out_kfree; | |
437 | ||
438 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
439 | error = -EFAULT; | |
440 | ||
441 | out_kfree: | |
dd700d94 ES |
442 | if (is_vmalloc_addr(kbuf)) |
443 | kmem_free_large(kbuf); | |
444 | else | |
445 | kmem_free(kbuf); | |
d296d30a CH |
446 | out_dput: |
447 | dput(dentry); | |
448 | return error; | |
1da177e4 LT |
449 | } |
450 | ||
28750975 | 451 | int |
1da177e4 | 452 | xfs_attrmulti_attr_get( |
739bfb2a | 453 | struct inode *inode, |
a9273ca5 DC |
454 | unsigned char *name, |
455 | unsigned char __user *ubuf, | |
1da177e4 LT |
456 | __uint32_t *len, |
457 | __uint32_t flags) | |
458 | { | |
a9273ca5 | 459 | unsigned char *kbuf; |
1da177e4 | 460 | int error = EFAULT; |
e8b0ebaa | 461 | |
1da177e4 LT |
462 | if (*len > XATTR_SIZE_MAX) |
463 | return EINVAL; | |
ad650f5b DC |
464 | kbuf = kmem_zalloc(*len, KM_SLEEP | KM_MAYFAIL); |
465 | if (!kbuf) { | |
466 | kbuf = kmem_zalloc_large(*len); | |
467 | if (!kbuf) | |
468 | return ENOMEM; | |
469 | } | |
1da177e4 | 470 | |
e8b0ebaa | 471 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
472 | if (error) |
473 | goto out_kfree; | |
474 | ||
475 | if (copy_to_user(ubuf, kbuf, *len)) | |
476 | error = EFAULT; | |
477 | ||
478 | out_kfree: | |
ad650f5b DC |
479 | if (is_vmalloc_addr(kbuf)) |
480 | kmem_free_large(kbuf); | |
481 | else | |
482 | kmem_free(kbuf); | |
1da177e4 LT |
483 | return error; |
484 | } | |
485 | ||
28750975 | 486 | int |
1da177e4 | 487 | xfs_attrmulti_attr_set( |
739bfb2a | 488 | struct inode *inode, |
a9273ca5 DC |
489 | unsigned char *name, |
490 | const unsigned char __user *ubuf, | |
1da177e4 LT |
491 | __uint32_t len, |
492 | __uint32_t flags) | |
493 | { | |
a9273ca5 | 494 | unsigned char *kbuf; |
1da177e4 LT |
495 | int error = EFAULT; |
496 | ||
739bfb2a | 497 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
498 | return EPERM; |
499 | if (len > XATTR_SIZE_MAX) | |
500 | return EINVAL; | |
501 | ||
0e639bde LZ |
502 | kbuf = memdup_user(ubuf, len); |
503 | if (IS_ERR(kbuf)) | |
504 | return PTR_ERR(kbuf); | |
e8b0ebaa | 505 | |
739bfb2a | 506 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 | 507 | |
1da177e4 LT |
508 | return error; |
509 | } | |
510 | ||
28750975 | 511 | int |
1da177e4 | 512 | xfs_attrmulti_attr_remove( |
739bfb2a | 513 | struct inode *inode, |
a9273ca5 | 514 | unsigned char *name, |
1da177e4 LT |
515 | __uint32_t flags) |
516 | { | |
739bfb2a | 517 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 518 | return EPERM; |
739bfb2a | 519 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
520 | } |
521 | ||
522 | STATIC int | |
523 | xfs_attrmulti_by_handle( | |
42a74f20 | 524 | struct file *parfilp, |
d296d30a | 525 | void __user *arg) |
1da177e4 LT |
526 | { |
527 | int error; | |
528 | xfs_attr_multiop_t *ops; | |
529 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 530 | struct dentry *dentry; |
1da177e4 | 531 | unsigned int i, size; |
a9273ca5 | 532 | unsigned char *attr_name; |
1da177e4 LT |
533 | |
534 | if (!capable(CAP_SYS_ADMIN)) | |
535 | return -XFS_ERROR(EPERM); | |
536 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
537 | return -XFS_ERROR(EFAULT); | |
538 | ||
fda168c2 ZW |
539 | /* overflow check */ |
540 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) | |
541 | return -E2BIG; | |
542 | ||
d296d30a CH |
543 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
544 | if (IS_ERR(dentry)) | |
545 | return PTR_ERR(dentry); | |
1da177e4 LT |
546 | |
547 | error = E2BIG; | |
e182f57a | 548 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 549 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 550 | goto out_dput; |
1da177e4 | 551 | |
0e639bde LZ |
552 | ops = memdup_user(am_hreq.ops, size); |
553 | if (IS_ERR(ops)) { | |
554 | error = PTR_ERR(ops); | |
d296d30a | 555 | goto out_dput; |
0e639bde | 556 | } |
1da177e4 LT |
557 | |
558 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
559 | if (!attr_name) | |
560 | goto out_kfree_ops; | |
561 | ||
1da177e4 LT |
562 | error = 0; |
563 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 564 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
565 | ops[i].am_attrname, MAXNAMELEN); |
566 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
567 | error = -ERANGE; | |
568 | if (ops[i].am_error < 0) | |
569 | break; | |
570 | ||
571 | switch (ops[i].am_opcode) { | |
572 | case ATTR_OP_GET: | |
d296d30a CH |
573 | ops[i].am_error = xfs_attrmulti_attr_get( |
574 | dentry->d_inode, attr_name, | |
575 | ops[i].am_attrvalue, &ops[i].am_length, | |
576 | ops[i].am_flags); | |
1da177e4 LT |
577 | break; |
578 | case ATTR_OP_SET: | |
a561be71 | 579 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
580 | if (ops[i].am_error) |
581 | break; | |
d296d30a CH |
582 | ops[i].am_error = xfs_attrmulti_attr_set( |
583 | dentry->d_inode, attr_name, | |
584 | ops[i].am_attrvalue, ops[i].am_length, | |
585 | ops[i].am_flags); | |
2a79f17e | 586 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
587 | break; |
588 | case ATTR_OP_REMOVE: | |
a561be71 | 589 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
590 | if (ops[i].am_error) |
591 | break; | |
d296d30a CH |
592 | ops[i].am_error = xfs_attrmulti_attr_remove( |
593 | dentry->d_inode, attr_name, | |
594 | ops[i].am_flags); | |
2a79f17e | 595 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
596 | break; |
597 | default: | |
598 | ops[i].am_error = EINVAL; | |
599 | } | |
600 | } | |
601 | ||
602 | if (copy_to_user(am_hreq.ops, ops, size)) | |
603 | error = XFS_ERROR(EFAULT); | |
604 | ||
605 | kfree(attr_name); | |
606 | out_kfree_ops: | |
607 | kfree(ops); | |
d296d30a CH |
608 | out_dput: |
609 | dput(dentry); | |
1da177e4 LT |
610 | return -error; |
611 | } | |
612 | ||
d5547f9f | 613 | int |
1da177e4 | 614 | xfs_ioc_space( |
993386c1 | 615 | struct xfs_inode *ip, |
f37ea149 | 616 | struct inode *inode, |
1da177e4 LT |
617 | struct file *filp, |
618 | int ioflags, | |
619 | unsigned int cmd, | |
743bb465 | 620 | xfs_flock64_t *bf) |
1da177e4 | 621 | { |
1da177e4 LT |
622 | int attr_flags = 0; |
623 | int error; | |
624 | ||
743bb465 | 625 | /* |
626 | * Only allow the sys admin to reserve space unless | |
627 | * unwritten extents are enabled. | |
628 | */ | |
629 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
630 | !capable(CAP_SYS_ADMIN)) | |
631 | return -XFS_ERROR(EPERM); | |
632 | ||
f37ea149 | 633 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
634 | return -XFS_ERROR(EPERM); |
635 | ||
ad4a8ac4 | 636 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
637 | return -XFS_ERROR(EBADF); |
638 | ||
f37ea149 | 639 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
640 | return -XFS_ERROR(EINVAL); |
641 | ||
1da177e4 | 642 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
0f285c8a | 643 | attr_flags |= XFS_ATTR_NONBLOCK; |
82878897 DC |
644 | |
645 | if (filp->f_flags & O_DSYNC) | |
646 | attr_flags |= XFS_ATTR_SYNC; | |
647 | ||
1da177e4 | 648 | if (ioflags & IO_INVIS) |
0f285c8a | 649 | attr_flags |= XFS_ATTR_DMI; |
1da177e4 | 650 | |
d9457dc0 JK |
651 | error = mnt_want_write_file(filp); |
652 | if (error) | |
653 | return error; | |
743bb465 | 654 | error = xfs_change_file_space(ip, cmd, bf, filp->f_pos, attr_flags); |
d9457dc0 | 655 | mnt_drop_write_file(filp); |
1da177e4 LT |
656 | return -error; |
657 | } | |
658 | ||
659 | STATIC int | |
660 | xfs_ioc_bulkstat( | |
661 | xfs_mount_t *mp, | |
662 | unsigned int cmd, | |
663 | void __user *arg) | |
664 | { | |
665 | xfs_fsop_bulkreq_t bulkreq; | |
666 | int count; /* # of records returned */ | |
667 | xfs_ino_t inlast; /* last inode number */ | |
668 | int done; | |
669 | int error; | |
670 | ||
671 | /* done = 1 if there are more stats to get and if bulkstat */ | |
672 | /* should be called again (unused here, but used in dmapi) */ | |
673 | ||
674 | if (!capable(CAP_SYS_ADMIN)) | |
675 | return -EPERM; | |
676 | ||
677 | if (XFS_FORCED_SHUTDOWN(mp)) | |
678 | return -XFS_ERROR(EIO); | |
679 | ||
680 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
681 | return -XFS_ERROR(EFAULT); | |
682 | ||
683 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
684 | return -XFS_ERROR(EFAULT); | |
685 | ||
686 | if ((count = bulkreq.icount) <= 0) | |
687 | return -XFS_ERROR(EINVAL); | |
688 | ||
cd57e594 LM |
689 | if (bulkreq.ubuffer == NULL) |
690 | return -XFS_ERROR(EINVAL); | |
691 | ||
1da177e4 LT |
692 | if (cmd == XFS_IOC_FSINUMBERS) |
693 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 694 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 LT |
695 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
696 | error = xfs_bulkstat_single(mp, &inlast, | |
697 | bulkreq.ubuffer, &done); | |
cd57e594 | 698 | else /* XFS_IOC_FSBULKSTAT */ |
7dce11db CH |
699 | error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, |
700 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
701 | &done); | |
1da177e4 LT |
702 | |
703 | if (error) | |
704 | return -error; | |
705 | ||
706 | if (bulkreq.ocount != NULL) { | |
707 | if (copy_to_user(bulkreq.lastip, &inlast, | |
708 | sizeof(xfs_ino_t))) | |
709 | return -XFS_ERROR(EFAULT); | |
710 | ||
711 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
712 | return -XFS_ERROR(EFAULT); | |
713 | } | |
714 | ||
715 | return 0; | |
716 | } | |
717 | ||
718 | STATIC int | |
719 | xfs_ioc_fsgeometry_v1( | |
720 | xfs_mount_t *mp, | |
721 | void __user *arg) | |
722 | { | |
eeb2036b | 723 | xfs_fsop_geom_t fsgeo; |
1da177e4 LT |
724 | int error; |
725 | ||
eeb2036b | 726 | error = xfs_fs_geometry(mp, &fsgeo, 3); |
1da177e4 LT |
727 | if (error) |
728 | return -error; | |
729 | ||
eeb2036b AE |
730 | /* |
731 | * Caller should have passed an argument of type | |
732 | * xfs_fsop_geom_v1_t. This is a proper subset of the | |
733 | * xfs_fsop_geom_t that xfs_fs_geometry() fills in. | |
734 | */ | |
735 | if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t))) | |
1da177e4 LT |
736 | return -XFS_ERROR(EFAULT); |
737 | return 0; | |
738 | } | |
739 | ||
740 | STATIC int | |
741 | xfs_ioc_fsgeometry( | |
742 | xfs_mount_t *mp, | |
743 | void __user *arg) | |
744 | { | |
745 | xfs_fsop_geom_t fsgeo; | |
746 | int error; | |
747 | ||
748 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
749 | if (error) | |
750 | return -error; | |
751 | ||
752 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
753 | return -XFS_ERROR(EFAULT); | |
754 | return 0; | |
755 | } | |
756 | ||
757 | /* | |
758 | * Linux extended inode flags interface. | |
759 | */ | |
1da177e4 LT |
760 | |
761 | STATIC unsigned int | |
762 | xfs_merge_ioc_xflags( | |
763 | unsigned int flags, | |
764 | unsigned int start) | |
765 | { | |
766 | unsigned int xflags = start; | |
767 | ||
39058a0e | 768 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
769 | xflags |= XFS_XFLAG_IMMUTABLE; |
770 | else | |
771 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 772 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
773 | xflags |= XFS_XFLAG_APPEND; |
774 | else | |
775 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 776 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
777 | xflags |= XFS_XFLAG_SYNC; |
778 | else | |
779 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 780 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
781 | xflags |= XFS_XFLAG_NOATIME; |
782 | else | |
783 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 784 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
785 | xflags |= XFS_XFLAG_NODUMP; |
786 | else | |
787 | xflags &= ~XFS_XFLAG_NODUMP; | |
788 | ||
789 | return xflags; | |
790 | } | |
791 | ||
792 | STATIC unsigned int | |
793 | xfs_di2lxflags( | |
794 | __uint16_t di_flags) | |
795 | { | |
796 | unsigned int flags = 0; | |
797 | ||
798 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 799 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 800 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 801 | flags |= FS_APPEND_FL; |
1da177e4 | 802 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 803 | flags |= FS_SYNC_FL; |
1da177e4 | 804 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 805 | flags |= FS_NOATIME_FL; |
1da177e4 | 806 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 807 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
808 | return flags; |
809 | } | |
810 | ||
c83bfab1 CH |
811 | STATIC int |
812 | xfs_ioc_fsgetxattr( | |
813 | xfs_inode_t *ip, | |
814 | int attr, | |
815 | void __user *arg) | |
816 | { | |
817 | struct fsxattr fa; | |
818 | ||
a122eb2f DR |
819 | memset(&fa, 0, sizeof(struct fsxattr)); |
820 | ||
c83bfab1 CH |
821 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
822 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
823 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
6743099c | 824 | fa.fsx_projid = xfs_get_projid(ip); |
c83bfab1 CH |
825 | |
826 | if (attr) { | |
827 | if (ip->i_afp) { | |
828 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
829 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
830 | sizeof(xfs_bmbt_rec_t); | |
831 | else | |
832 | fa.fsx_nextents = ip->i_d.di_anextents; | |
833 | } else | |
834 | fa.fsx_nextents = 0; | |
835 | } else { | |
836 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
837 | fa.fsx_nextents = ip->i_df.if_bytes / | |
838 | sizeof(xfs_bmbt_rec_t); | |
839 | else | |
840 | fa.fsx_nextents = ip->i_d.di_nextents; | |
841 | } | |
842 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
843 | ||
844 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
845 | return -EFAULT; | |
846 | return 0; | |
847 | } | |
848 | ||
25fe55e8 CH |
849 | STATIC void |
850 | xfs_set_diflags( | |
851 | struct xfs_inode *ip, | |
852 | unsigned int xflags) | |
853 | { | |
854 | unsigned int di_flags; | |
855 | ||
856 | /* can't set PREALLOC this way, just preserve it */ | |
857 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
858 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
859 | di_flags |= XFS_DIFLAG_IMMUTABLE; | |
860 | if (xflags & XFS_XFLAG_APPEND) | |
861 | di_flags |= XFS_DIFLAG_APPEND; | |
862 | if (xflags & XFS_XFLAG_SYNC) | |
863 | di_flags |= XFS_DIFLAG_SYNC; | |
864 | if (xflags & XFS_XFLAG_NOATIME) | |
865 | di_flags |= XFS_DIFLAG_NOATIME; | |
866 | if (xflags & XFS_XFLAG_NODUMP) | |
867 | di_flags |= XFS_DIFLAG_NODUMP; | |
868 | if (xflags & XFS_XFLAG_PROJINHERIT) | |
869 | di_flags |= XFS_DIFLAG_PROJINHERIT; | |
870 | if (xflags & XFS_XFLAG_NODEFRAG) | |
871 | di_flags |= XFS_DIFLAG_NODEFRAG; | |
872 | if (xflags & XFS_XFLAG_FILESTREAM) | |
873 | di_flags |= XFS_DIFLAG_FILESTREAM; | |
abbede1b | 874 | if (S_ISDIR(ip->i_d.di_mode)) { |
25fe55e8 CH |
875 | if (xflags & XFS_XFLAG_RTINHERIT) |
876 | di_flags |= XFS_DIFLAG_RTINHERIT; | |
877 | if (xflags & XFS_XFLAG_NOSYMLINKS) | |
878 | di_flags |= XFS_DIFLAG_NOSYMLINKS; | |
879 | if (xflags & XFS_XFLAG_EXTSZINHERIT) | |
880 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; | |
abbede1b | 881 | } else if (S_ISREG(ip->i_d.di_mode)) { |
25fe55e8 CH |
882 | if (xflags & XFS_XFLAG_REALTIME) |
883 | di_flags |= XFS_DIFLAG_REALTIME; | |
884 | if (xflags & XFS_XFLAG_EXTSIZE) | |
885 | di_flags |= XFS_DIFLAG_EXTSIZE; | |
886 | } | |
887 | ||
888 | ip->i_d.di_flags = di_flags; | |
889 | } | |
890 | ||
f13fae2d CH |
891 | STATIC void |
892 | xfs_diflags_to_linux( | |
893 | struct xfs_inode *ip) | |
894 | { | |
e4f75291 | 895 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
896 | unsigned int xflags = xfs_ip2xflags(ip); |
897 | ||
898 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
899 | inode->i_flags |= S_IMMUTABLE; | |
900 | else | |
901 | inode->i_flags &= ~S_IMMUTABLE; | |
902 | if (xflags & XFS_XFLAG_APPEND) | |
903 | inode->i_flags |= S_APPEND; | |
904 | else | |
905 | inode->i_flags &= ~S_APPEND; | |
906 | if (xflags & XFS_XFLAG_SYNC) | |
907 | inode->i_flags |= S_SYNC; | |
908 | else | |
909 | inode->i_flags &= ~S_SYNC; | |
910 | if (xflags & XFS_XFLAG_NOATIME) | |
911 | inode->i_flags |= S_NOATIME; | |
912 | else | |
913 | inode->i_flags &= ~S_NOATIME; | |
914 | } | |
25fe55e8 CH |
915 | |
916 | #define FSX_PROJID 1 | |
917 | #define FSX_EXTSIZE 2 | |
918 | #define FSX_XFLAGS 4 | |
919 | #define FSX_NONBLOCK 8 | |
920 | ||
921 | STATIC int | |
922 | xfs_ioctl_setattr( | |
923 | xfs_inode_t *ip, | |
924 | struct fsxattr *fa, | |
925 | int mask) | |
926 | { | |
927 | struct xfs_mount *mp = ip->i_mount; | |
928 | struct xfs_trans *tp; | |
929 | unsigned int lock_flags = 0; | |
7d095257 CH |
930 | struct xfs_dquot *udqp = NULL; |
931 | struct xfs_dquot *gdqp = NULL; | |
25fe55e8 CH |
932 | struct xfs_dquot *olddquot = NULL; |
933 | int code; | |
934 | ||
cca28fb8 | 935 | trace_xfs_ioctl_setattr(ip); |
25fe55e8 CH |
936 | |
937 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
938 | return XFS_ERROR(EROFS); | |
939 | if (XFS_FORCED_SHUTDOWN(mp)) | |
940 | return XFS_ERROR(EIO); | |
941 | ||
23963e54 | 942 | /* |
6743099c | 943 | * Disallow 32bit project ids when projid32bit feature is not enabled. |
23963e54 | 944 | */ |
6743099c AM |
945 | if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1) && |
946 | !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) | |
23963e54 AM |
947 | return XFS_ERROR(EINVAL); |
948 | ||
25fe55e8 CH |
949 | /* |
950 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
951 | * before we start any other transactions. Trying to do this later | |
952 | * is messy. We don't care to take a readlock to look at the ids | |
953 | * in inode here, because we can't hold it across the trans_reserve. | |
954 | * If the IDs do change before we take the ilock, we're covered | |
955 | * because the i_*dquot fields will get updated anyway. | |
956 | */ | |
957 | if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { | |
7d095257 | 958 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
25fe55e8 CH |
959 | ip->i_d.di_gid, fa->fsx_projid, |
960 | XFS_QMOPT_PQUOTA, &udqp, &gdqp); | |
961 | if (code) | |
962 | return code; | |
963 | } | |
964 | ||
965 | /* | |
966 | * For the other attributes, we acquire the inode lock and | |
967 | * first do an error checking pass. | |
968 | */ | |
969 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
970 | code = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); | |
971 | if (code) | |
972 | goto error_return; | |
973 | ||
974 | lock_flags = XFS_ILOCK_EXCL; | |
975 | xfs_ilock(ip, lock_flags); | |
976 | ||
977 | /* | |
978 | * CAP_FOWNER overrides the following restrictions: | |
979 | * | |
980 | * The user ID of the calling process must be equal | |
981 | * to the file owner ID, except in cases where the | |
982 | * CAP_FSETID capability is applicable. | |
983 | */ | |
91b77712 | 984 | if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) { |
25fe55e8 CH |
985 | code = XFS_ERROR(EPERM); |
986 | goto error_return; | |
987 | } | |
988 | ||
989 | /* | |
990 | * Do a quota reservation only if projid is actually going to change. | |
991 | */ | |
992 | if (mask & FSX_PROJID) { | |
7d095257 CH |
993 | if (XFS_IS_QUOTA_RUNNING(mp) && |
994 | XFS_IS_PQUOTA_ON(mp) && | |
6743099c | 995 | xfs_get_projid(ip) != fa->fsx_projid) { |
25fe55e8 | 996 | ASSERT(tp); |
7d095257 | 997 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp, |
25fe55e8 CH |
998 | capable(CAP_FOWNER) ? |
999 | XFS_QMOPT_FORCE_RES : 0); | |
1000 | if (code) /* out of quota */ | |
1001 | goto error_return; | |
1002 | } | |
1003 | } | |
1004 | ||
1005 | if (mask & FSX_EXTSIZE) { | |
1006 | /* | |
1007 | * Can't change extent size if any extents are allocated. | |
1008 | */ | |
1009 | if (ip->i_d.di_nextents && | |
1010 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != | |
1011 | fa->fsx_extsize)) { | |
1012 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1013 | goto error_return; | |
1014 | } | |
1015 | ||
1016 | /* | |
1017 | * Extent size must be a multiple of the appropriate block | |
5315837d DC |
1018 | * size, if set at all. It must also be smaller than the |
1019 | * maximum extent size supported by the filesystem. | |
1020 | * | |
1021 | * Also, for non-realtime files, limit the extent size hint to | |
1022 | * half the size of the AGs in the filesystem so alignment | |
1023 | * doesn't result in extents larger than an AG. | |
25fe55e8 CH |
1024 | */ |
1025 | if (fa->fsx_extsize != 0) { | |
5315837d DC |
1026 | xfs_extlen_t size; |
1027 | xfs_fsblock_t extsize_fsb; | |
1028 | ||
1029 | extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); | |
1030 | if (extsize_fsb > MAXEXTLEN) { | |
1031 | code = XFS_ERROR(EINVAL); | |
1032 | goto error_return; | |
1033 | } | |
25fe55e8 CH |
1034 | |
1035 | if (XFS_IS_REALTIME_INODE(ip) || | |
1036 | ((mask & FSX_XFLAGS) && | |
1037 | (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { | |
1038 | size = mp->m_sb.sb_rextsize << | |
1039 | mp->m_sb.sb_blocklog; | |
1040 | } else { | |
1041 | size = mp->m_sb.sb_blocksize; | |
5315837d DC |
1042 | if (extsize_fsb > mp->m_sb.sb_agblocks / 2) { |
1043 | code = XFS_ERROR(EINVAL); | |
1044 | goto error_return; | |
1045 | } | |
25fe55e8 CH |
1046 | } |
1047 | ||
1048 | if (fa->fsx_extsize % size) { | |
1049 | code = XFS_ERROR(EINVAL); | |
1050 | goto error_return; | |
1051 | } | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | ||
1056 | if (mask & FSX_XFLAGS) { | |
1057 | /* | |
1058 | * Can't change realtime flag if any extents are allocated. | |
1059 | */ | |
1060 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
1061 | (XFS_IS_REALTIME_INODE(ip)) != | |
1062 | (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1063 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1064 | goto error_return; | |
1065 | } | |
1066 | ||
1067 | /* | |
1068 | * If realtime flag is set then must have realtime data. | |
1069 | */ | |
1070 | if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1071 | if ((mp->m_sb.sb_rblocks == 0) || | |
1072 | (mp->m_sb.sb_rextsize == 0) || | |
1073 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { | |
1074 | code = XFS_ERROR(EINVAL); | |
1075 | goto error_return; | |
1076 | } | |
1077 | } | |
1078 | ||
1079 | /* | |
1080 | * Can't modify an immutable/append-only file unless | |
1081 | * we have appropriate permission. | |
1082 | */ | |
1083 | if ((ip->i_d.di_flags & | |
1084 | (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || | |
1085 | (fa->fsx_xflags & | |
1086 | (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && | |
1087 | !capable(CAP_LINUX_IMMUTABLE)) { | |
1088 | code = XFS_ERROR(EPERM); | |
1089 | goto error_return; | |
1090 | } | |
1091 | } | |
1092 | ||
ddc3415a | 1093 | xfs_trans_ijoin(tp, ip, 0); |
25fe55e8 CH |
1094 | |
1095 | /* | |
1096 | * Change file ownership. Must be the owner or privileged. | |
25fe55e8 CH |
1097 | */ |
1098 | if (mask & FSX_PROJID) { | |
1099 | /* | |
1100 | * CAP_FSETID overrides the following restrictions: | |
1101 | * | |
1102 | * The set-user-ID and set-group-ID bits of a file will be | |
1103 | * cleared upon successful return from chown() | |
1104 | */ | |
1105 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
1106 | !capable(CAP_FSETID)) | |
1107 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
1108 | ||
1109 | /* | |
1110 | * Change the ownerships and register quota modifications | |
1111 | * in the transaction. | |
1112 | */ | |
6743099c | 1113 | if (xfs_get_projid(ip) != fa->fsx_projid) { |
7d095257 CH |
1114 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { |
1115 | olddquot = xfs_qm_vop_chown(tp, ip, | |
25fe55e8 CH |
1116 | &ip->i_gdquot, gdqp); |
1117 | } | |
6743099c | 1118 | xfs_set_projid(ip, fa->fsx_projid); |
25fe55e8 CH |
1119 | |
1120 | /* | |
1121 | * We may have to rev the inode as well as | |
1122 | * the superblock version number since projids didn't | |
1123 | * exist before DINODE_VERSION_2 and SB_VERSION_NLINK. | |
1124 | */ | |
51ce16d5 | 1125 | if (ip->i_d.di_version == 1) |
25fe55e8 CH |
1126 | xfs_bump_ino_vers2(tp, ip); |
1127 | } | |
1128 | ||
1129 | } | |
1130 | ||
1131 | if (mask & FSX_EXTSIZE) | |
1132 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
f13fae2d | 1133 | if (mask & FSX_XFLAGS) { |
25fe55e8 | 1134 | xfs_set_diflags(ip, fa->fsx_xflags); |
f13fae2d CH |
1135 | xfs_diflags_to_linux(ip); |
1136 | } | |
25fe55e8 | 1137 | |
dcd79a14 | 1138 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); |
25fe55e8 | 1139 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
25fe55e8 CH |
1140 | |
1141 | XFS_STATS_INC(xs_ig_attrchg); | |
1142 | ||
1143 | /* | |
1144 | * If this is a synchronous mount, make sure that the | |
1145 | * transaction goes to disk before returning to the user. | |
1146 | * This is slightly sub-optimal in that truncates require | |
1147 | * two sync transactions instead of one for wsync filesystems. | |
1148 | * One for the truncate and one for the timestamps since we | |
1149 | * don't want to change the timestamps unless we're sure the | |
1150 | * truncate worked. Truncates are less than 1% of the laddis | |
1151 | * mix so this probably isn't worth the trouble to optimize. | |
1152 | */ | |
1153 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1154 | xfs_trans_set_sync(tp); | |
1155 | code = xfs_trans_commit(tp, 0); | |
1156 | xfs_iunlock(ip, lock_flags); | |
1157 | ||
1158 | /* | |
1159 | * Release any dquot(s) the inode had kept before chown. | |
1160 | */ | |
7d095257 CH |
1161 | xfs_qm_dqrele(olddquot); |
1162 | xfs_qm_dqrele(udqp); | |
1163 | xfs_qm_dqrele(gdqp); | |
25fe55e8 | 1164 | |
288699fe | 1165 | return code; |
25fe55e8 CH |
1166 | |
1167 | error_return: | |
7d095257 CH |
1168 | xfs_qm_dqrele(udqp); |
1169 | xfs_qm_dqrele(gdqp); | |
25fe55e8 CH |
1170 | xfs_trans_cancel(tp, 0); |
1171 | if (lock_flags) | |
1172 | xfs_iunlock(ip, lock_flags); | |
1173 | return code; | |
1174 | } | |
1175 | ||
1da177e4 | 1176 | STATIC int |
df26cfe8 | 1177 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1178 | xfs_inode_t *ip, |
1179 | struct file *filp, | |
1da177e4 LT |
1180 | void __user *arg) |
1181 | { | |
1182 | struct fsxattr fa; | |
25fe55e8 | 1183 | unsigned int mask; |
d9457dc0 | 1184 | int error; |
df26cfe8 LM |
1185 | |
1186 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1187 | return -EFAULT; | |
1da177e4 | 1188 | |
25fe55e8 | 1189 | mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; |
df26cfe8 | 1190 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 | 1191 | mask |= FSX_NONBLOCK; |
1da177e4 | 1192 | |
d9457dc0 JK |
1193 | error = mnt_want_write_file(filp); |
1194 | if (error) | |
1195 | return error; | |
1196 | error = xfs_ioctl_setattr(ip, &fa, mask); | |
1197 | mnt_drop_write_file(filp); | |
1198 | return -error; | |
df26cfe8 | 1199 | } |
1da177e4 | 1200 | |
df26cfe8 LM |
1201 | STATIC int |
1202 | xfs_ioc_getxflags( | |
1203 | xfs_inode_t *ip, | |
1204 | void __user *arg) | |
1205 | { | |
1206 | unsigned int flags; | |
1da177e4 | 1207 | |
df26cfe8 LM |
1208 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1209 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1210 | return -EFAULT; | |
1211 | return 0; | |
1212 | } | |
1da177e4 | 1213 | |
df26cfe8 LM |
1214 | STATIC int |
1215 | xfs_ioc_setxflags( | |
1216 | xfs_inode_t *ip, | |
1217 | struct file *filp, | |
1218 | void __user *arg) | |
1219 | { | |
25fe55e8 | 1220 | struct fsxattr fa; |
df26cfe8 | 1221 | unsigned int flags; |
25fe55e8 | 1222 | unsigned int mask; |
d9457dc0 | 1223 | int error; |
1da177e4 | 1224 | |
df26cfe8 LM |
1225 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1226 | return -EFAULT; | |
1da177e4 | 1227 | |
df26cfe8 LM |
1228 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1229 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1230 | FS_SYNC_FL)) | |
1231 | return -EOPNOTSUPP; | |
1da177e4 | 1232 | |
25fe55e8 | 1233 | mask = FSX_XFLAGS; |
df26cfe8 | 1234 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 CH |
1235 | mask |= FSX_NONBLOCK; |
1236 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); | |
1da177e4 | 1237 | |
d9457dc0 JK |
1238 | error = mnt_want_write_file(filp); |
1239 | if (error) | |
1240 | return error; | |
1241 | error = xfs_ioctl_setattr(ip, &fa, mask); | |
1242 | mnt_drop_write_file(filp); | |
1243 | return -error; | |
1da177e4 LT |
1244 | } |
1245 | ||
8a7141a8 ES |
1246 | STATIC int |
1247 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) | |
1248 | { | |
1249 | struct getbmap __user *base = *ap; | |
1250 | ||
1251 | /* copy only getbmap portion (not getbmapx) */ | |
1252 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
1253 | return XFS_ERROR(EFAULT); | |
1254 | ||
1255 | *ap += sizeof(struct getbmap); | |
1256 | return 0; | |
1257 | } | |
1258 | ||
1da177e4 LT |
1259 | STATIC int |
1260 | xfs_ioc_getbmap( | |
993386c1 | 1261 | struct xfs_inode *ip, |
1da177e4 LT |
1262 | int ioflags, |
1263 | unsigned int cmd, | |
1264 | void __user *arg) | |
1265 | { | |
8a7141a8 | 1266 | struct getbmapx bmx; |
1da177e4 LT |
1267 | int error; |
1268 | ||
8a7141a8 | 1269 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
1da177e4 LT |
1270 | return -XFS_ERROR(EFAULT); |
1271 | ||
8a7141a8 | 1272 | if (bmx.bmv_count < 2) |
1da177e4 LT |
1273 | return -XFS_ERROR(EINVAL); |
1274 | ||
8a7141a8 | 1275 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
1da177e4 | 1276 | if (ioflags & IO_INVIS) |
8a7141a8 | 1277 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1278 | |
8a7141a8 ES |
1279 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
1280 | (struct getbmap *)arg+1); | |
1da177e4 LT |
1281 | if (error) |
1282 | return -error; | |
1283 | ||
8a7141a8 ES |
1284 | /* copy back header - only size of getbmap */ |
1285 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
1da177e4 LT |
1286 | return -XFS_ERROR(EFAULT); |
1287 | return 0; | |
1288 | } | |
1289 | ||
8a7141a8 ES |
1290 | STATIC int |
1291 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) | |
1292 | { | |
1293 | struct getbmapx __user *base = *ap; | |
1294 | ||
1295 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
1296 | return XFS_ERROR(EFAULT); | |
1297 | ||
1298 | *ap += sizeof(struct getbmapx); | |
1299 | return 0; | |
1300 | } | |
1301 | ||
1da177e4 LT |
1302 | STATIC int |
1303 | xfs_ioc_getbmapx( | |
993386c1 | 1304 | struct xfs_inode *ip, |
1da177e4 LT |
1305 | void __user *arg) |
1306 | { | |
1307 | struct getbmapx bmx; | |
1da177e4 LT |
1308 | int error; |
1309 | ||
1310 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1311 | return -XFS_ERROR(EFAULT); | |
1312 | ||
1313 | if (bmx.bmv_count < 2) | |
1314 | return -XFS_ERROR(EINVAL); | |
1315 | ||
8a7141a8 | 1316 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
1da177e4 LT |
1317 | return -XFS_ERROR(EINVAL); |
1318 | ||
8a7141a8 ES |
1319 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
1320 | (struct getbmapx *)arg+1); | |
1da177e4 LT |
1321 | if (error) |
1322 | return -error; | |
1323 | ||
8a7141a8 ES |
1324 | /* copy back header */ |
1325 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
1da177e4 LT |
1326 | return -XFS_ERROR(EFAULT); |
1327 | ||
1328 | return 0; | |
1329 | } | |
df26cfe8 | 1330 | |
4d4be482 CH |
1331 | /* |
1332 | * Note: some of the ioctl's return positive numbers as a | |
1333 | * byte count indicating success, such as readlink_by_handle. | |
1334 | * So we don't "sign flip" like most other routines. This means | |
1335 | * true errors need to be returned as a negative value. | |
1336 | */ | |
1337 | long | |
1338 | xfs_file_ioctl( | |
df26cfe8 | 1339 | struct file *filp, |
df26cfe8 | 1340 | unsigned int cmd, |
4d4be482 | 1341 | unsigned long p) |
df26cfe8 | 1342 | { |
496ad9aa | 1343 | struct inode *inode = file_inode(filp); |
4d4be482 CH |
1344 | struct xfs_inode *ip = XFS_I(inode); |
1345 | struct xfs_mount *mp = ip->i_mount; | |
1346 | void __user *arg = (void __user *)p; | |
1347 | int ioflags = 0; | |
df26cfe8 LM |
1348 | int error; |
1349 | ||
4d4be482 CH |
1350 | if (filp->f_mode & FMODE_NOCMTIME) |
1351 | ioflags |= IO_INVIS; | |
df26cfe8 | 1352 | |
cca28fb8 | 1353 | trace_xfs_file_ioctl(ip); |
4d4be482 CH |
1354 | |
1355 | switch (cmd) { | |
a46db608 CH |
1356 | case FITRIM: |
1357 | return xfs_ioc_trim(mp, arg); | |
df26cfe8 LM |
1358 | case XFS_IOC_ALLOCSP: |
1359 | case XFS_IOC_FREESP: | |
1360 | case XFS_IOC_RESVSP: | |
1361 | case XFS_IOC_UNRESVSP: | |
1362 | case XFS_IOC_ALLOCSP64: | |
1363 | case XFS_IOC_FREESP64: | |
1364 | case XFS_IOC_RESVSP64: | |
44722352 DC |
1365 | case XFS_IOC_UNRESVSP64: |
1366 | case XFS_IOC_ZERO_RANGE: { | |
743bb465 | 1367 | xfs_flock64_t bf; |
df26cfe8 | 1368 | |
743bb465 | 1369 | if (copy_from_user(&bf, arg, sizeof(bf))) |
1370 | return -XFS_ERROR(EFAULT); | |
1371 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); | |
1372 | } | |
df26cfe8 LM |
1373 | case XFS_IOC_DIOINFO: { |
1374 | struct dioattr da; | |
1375 | xfs_buftarg_t *target = | |
1376 | XFS_IS_REALTIME_INODE(ip) ? | |
1377 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1378 | ||
1379 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; | |
1380 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); | |
1381 | ||
1382 | if (copy_to_user(arg, &da, sizeof(da))) | |
1383 | return -XFS_ERROR(EFAULT); | |
1384 | return 0; | |
1385 | } | |
1386 | ||
1387 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1388 | case XFS_IOC_FSBULKSTAT: | |
1389 | case XFS_IOC_FSINUMBERS: | |
1390 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1391 | ||
1392 | case XFS_IOC_FSGEOMETRY_V1: | |
1393 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1394 | ||
1395 | case XFS_IOC_FSGEOMETRY: | |
1396 | return xfs_ioc_fsgeometry(mp, arg); | |
1397 | ||
1398 | case XFS_IOC_GETVERSION: | |
1399 | return put_user(inode->i_generation, (int __user *)arg); | |
1400 | ||
1401 | case XFS_IOC_FSGETXATTR: | |
1402 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1403 | case XFS_IOC_FSGETXATTRA: | |
1404 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1405 | case XFS_IOC_FSSETXATTR: |
1406 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1407 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1408 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1409 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1410 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1411 | |
1412 | case XFS_IOC_FSSETDM: { | |
1413 | struct fsdmidata dmi; | |
1414 | ||
1415 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
1416 | return -XFS_ERROR(EFAULT); | |
1417 | ||
d9457dc0 JK |
1418 | error = mnt_want_write_file(filp); |
1419 | if (error) | |
1420 | return error; | |
1421 | ||
df26cfe8 LM |
1422 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, |
1423 | dmi.fsd_dmstate); | |
d9457dc0 | 1424 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1425 | return -error; |
1426 | } | |
1427 | ||
1428 | case XFS_IOC_GETBMAP: | |
1429 | case XFS_IOC_GETBMAPA: | |
1430 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1431 | ||
1432 | case XFS_IOC_GETBMAPX: | |
1433 | return xfs_ioc_getbmapx(ip, arg); | |
1434 | ||
1435 | case XFS_IOC_FD_TO_HANDLE: | |
1436 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1437 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1438 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1439 | |
743bb465 | 1440 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
1441 | return -XFS_ERROR(EFAULT); | |
1442 | return xfs_find_handle(cmd, &hreq); | |
1443 | } | |
1444 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1445 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1446 | |
743bb465 | 1447 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1448 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1449 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1450 | } |
df26cfe8 | 1451 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1452 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1453 | |
743bb465 | 1454 | case XFS_IOC_READLINK_BY_HANDLE: { |
1455 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1456 | |
743bb465 | 1457 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1458 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1459 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1460 | } |
df26cfe8 | 1461 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1462 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1463 | |
1464 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1465 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1466 | |
1467 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1468 | struct xfs_swapext sxp; |
1469 | ||
1470 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
1471 | return -XFS_ERROR(EFAULT); | |
d9457dc0 JK |
1472 | error = mnt_want_write_file(filp); |
1473 | if (error) | |
1474 | return error; | |
743bb465 | 1475 | error = xfs_swapext(&sxp); |
d9457dc0 | 1476 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1477 | return -error; |
1478 | } | |
1479 | ||
1480 | case XFS_IOC_FSCOUNTS: { | |
1481 | xfs_fsop_counts_t out; | |
1482 | ||
1483 | error = xfs_fs_counts(mp, &out); | |
1484 | if (error) | |
1485 | return -error; | |
1486 | ||
1487 | if (copy_to_user(arg, &out, sizeof(out))) | |
1488 | return -XFS_ERROR(EFAULT); | |
1489 | return 0; | |
1490 | } | |
1491 | ||
1492 | case XFS_IOC_SET_RESBLKS: { | |
1493 | xfs_fsop_resblks_t inout; | |
1494 | __uint64_t in; | |
1495 | ||
1496 | if (!capable(CAP_SYS_ADMIN)) | |
1497 | return -EPERM; | |
1498 | ||
d5db0f97 ES |
1499 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
1500 | return -XFS_ERROR(EROFS); | |
1501 | ||
df26cfe8 LM |
1502 | if (copy_from_user(&inout, arg, sizeof(inout))) |
1503 | return -XFS_ERROR(EFAULT); | |
1504 | ||
d9457dc0 JK |
1505 | error = mnt_want_write_file(filp); |
1506 | if (error) | |
1507 | return error; | |
1508 | ||
df26cfe8 LM |
1509 | /* input parameter is passed in resblks field of structure */ |
1510 | in = inout.resblks; | |
1511 | error = xfs_reserve_blocks(mp, &in, &inout); | |
d9457dc0 | 1512 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1513 | if (error) |
1514 | return -error; | |
1515 | ||
1516 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
1517 | return -XFS_ERROR(EFAULT); | |
1518 | return 0; | |
1519 | } | |
1520 | ||
1521 | case XFS_IOC_GET_RESBLKS: { | |
1522 | xfs_fsop_resblks_t out; | |
1523 | ||
1524 | if (!capable(CAP_SYS_ADMIN)) | |
1525 | return -EPERM; | |
1526 | ||
1527 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1528 | if (error) | |
1529 | return -error; | |
1530 | ||
1531 | if (copy_to_user(arg, &out, sizeof(out))) | |
1532 | return -XFS_ERROR(EFAULT); | |
1533 | ||
1534 | return 0; | |
1535 | } | |
1536 | ||
1537 | case XFS_IOC_FSGROWFSDATA: { | |
1538 | xfs_growfs_data_t in; | |
1539 | ||
df26cfe8 LM |
1540 | if (copy_from_user(&in, arg, sizeof(in))) |
1541 | return -XFS_ERROR(EFAULT); | |
1542 | ||
d9457dc0 JK |
1543 | error = mnt_want_write_file(filp); |
1544 | if (error) | |
1545 | return error; | |
df26cfe8 | 1546 | error = xfs_growfs_data(mp, &in); |
d9457dc0 | 1547 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1548 | return -error; |
1549 | } | |
1550 | ||
1551 | case XFS_IOC_FSGROWFSLOG: { | |
1552 | xfs_growfs_log_t in; | |
1553 | ||
df26cfe8 LM |
1554 | if (copy_from_user(&in, arg, sizeof(in))) |
1555 | return -XFS_ERROR(EFAULT); | |
1556 | ||
d9457dc0 JK |
1557 | error = mnt_want_write_file(filp); |
1558 | if (error) | |
1559 | return error; | |
df26cfe8 | 1560 | error = xfs_growfs_log(mp, &in); |
d9457dc0 | 1561 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1562 | return -error; |
1563 | } | |
1564 | ||
1565 | case XFS_IOC_FSGROWFSRT: { | |
1566 | xfs_growfs_rt_t in; | |
1567 | ||
df26cfe8 LM |
1568 | if (copy_from_user(&in, arg, sizeof(in))) |
1569 | return -XFS_ERROR(EFAULT); | |
1570 | ||
d9457dc0 JK |
1571 | error = mnt_want_write_file(filp); |
1572 | if (error) | |
1573 | return error; | |
df26cfe8 | 1574 | error = xfs_growfs_rt(mp, &in); |
d9457dc0 | 1575 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1576 | return -error; |
1577 | } | |
1578 | ||
df26cfe8 LM |
1579 | case XFS_IOC_GOINGDOWN: { |
1580 | __uint32_t in; | |
1581 | ||
1582 | if (!capable(CAP_SYS_ADMIN)) | |
1583 | return -EPERM; | |
1584 | ||
1585 | if (get_user(in, (__uint32_t __user *)arg)) | |
1586 | return -XFS_ERROR(EFAULT); | |
1587 | ||
1588 | error = xfs_fs_goingdown(mp, in); | |
1589 | return -error; | |
1590 | } | |
1591 | ||
1592 | case XFS_IOC_ERROR_INJECTION: { | |
1593 | xfs_error_injection_t in; | |
1594 | ||
1595 | if (!capable(CAP_SYS_ADMIN)) | |
1596 | return -EPERM; | |
1597 | ||
1598 | if (copy_from_user(&in, arg, sizeof(in))) | |
1599 | return -XFS_ERROR(EFAULT); | |
1600 | ||
1601 | error = xfs_errortag_add(in.errtag, mp); | |
1602 | return -error; | |
1603 | } | |
1604 | ||
1605 | case XFS_IOC_ERROR_CLEARALL: | |
1606 | if (!capable(CAP_SYS_ADMIN)) | |
1607 | return -EPERM; | |
1608 | ||
1609 | error = xfs_errortag_clearall(mp, 1); | |
1610 | return -error; | |
1611 | ||
8ca149de BF |
1612 | case XFS_IOC_FREE_EOFBLOCKS: { |
1613 | struct xfs_eofblocks eofb; | |
1614 | ||
1615 | if (copy_from_user(&eofb, arg, sizeof(eofb))) | |
1616 | return -XFS_ERROR(EFAULT); | |
1617 | ||
1618 | if (eofb.eof_version != XFS_EOFBLOCKS_VERSION) | |
1619 | return -XFS_ERROR(EINVAL); | |
1620 | ||
1621 | if (eofb.eof_flags & ~XFS_EOF_FLAGS_VALID) | |
1622 | return -XFS_ERROR(EINVAL); | |
1623 | ||
3e3f9f58 BF |
1624 | if (memchr_inv(&eofb.pad32, 0, sizeof(eofb.pad32)) || |
1625 | memchr_inv(eofb.pad64, 0, sizeof(eofb.pad64))) | |
8ca149de BF |
1626 | return -XFS_ERROR(EINVAL); |
1627 | ||
1628 | error = xfs_icache_free_eofblocks(mp, &eofb); | |
1629 | return -error; | |
1630 | } | |
1631 | ||
df26cfe8 LM |
1632 | default: |
1633 | return -ENOTTY; | |
1634 | } | |
1635 | } |