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Commit | Line | Data |
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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 | 18 | #include "xfs.h" |
1da177e4 | 19 | #include "xfs_fs.h" |
6ca1c906 | 20 | #include "xfs_format.h" |
1da177e4 LT |
21 | #include "xfs_log.h" |
22 | #include "xfs_trans.h" | |
23 | #include "xfs_sb.h" | |
a844f451 | 24 | #include "xfs_ag.h" |
1da177e4 | 25 | #include "xfs_alloc.h" |
1da177e4 | 26 | #include "xfs_mount.h" |
1da177e4 | 27 | #include "xfs_bmap_btree.h" |
1da177e4 LT |
28 | #include "xfs_dinode.h" |
29 | #include "xfs_inode.h" | |
7bf446f8 | 30 | #include "xfs_ioctl.h" |
1da177e4 | 31 | #include "xfs_rtalloc.h" |
1da177e4 | 32 | #include "xfs_itable.h" |
a844f451 | 33 | #include "xfs_error.h" |
1da177e4 | 34 | #include "xfs_attr.h" |
a844f451 | 35 | #include "xfs_bmap.h" |
1da177e4 LT |
36 | #include "xfs_buf_item.h" |
37 | #include "xfs_utils.h" | |
38 | #include "xfs_dfrag.h" | |
39 | #include "xfs_fsops.h" | |
993386c1 | 40 | #include "xfs_vnodeops.h" |
a46db608 | 41 | #include "xfs_discard.h" |
25fe55e8 CH |
42 | #include "xfs_quota.h" |
43 | #include "xfs_inode_item.h" | |
d296d30a | 44 | #include "xfs_export.h" |
0b1b213f | 45 | #include "xfs_trace.h" |
8ca149de | 46 | #include "xfs_icache.h" |
1da177e4 | 47 | |
16f7e0fe | 48 | #include <linux/capability.h> |
1da177e4 LT |
49 | #include <linux/dcache.h> |
50 | #include <linux/mount.h> | |
51 | #include <linux/namei.h> | |
52 | #include <linux/pagemap.h> | |
5a0e3ad6 | 53 | #include <linux/slab.h> |
d296d30a | 54 | #include <linux/exportfs.h> |
1da177e4 LT |
55 | |
56 | /* | |
57 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
58 | * a file or fs handle. | |
59 | * | |
60 | * XFS_IOC_PATH_TO_FSHANDLE | |
61 | * returns fs handle for a mount point or path within that mount point | |
62 | * XFS_IOC_FD_TO_HANDLE | |
63 | * returns full handle for a FD opened in user space | |
64 | * XFS_IOC_PATH_TO_HANDLE | |
65 | * returns full handle for a path | |
66 | */ | |
d5547f9f | 67 | int |
1da177e4 LT |
68 | xfs_find_handle( |
69 | unsigned int cmd, | |
743bb465 | 70 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
71 | { |
72 | int hsize; | |
73 | xfs_handle_t handle; | |
1da177e4 | 74 | struct inode *inode; |
531c3bdc | 75 | struct fd f = {0}; |
4346cdd4 | 76 | struct path path; |
2903ff01 | 77 | int error; |
4346cdd4 | 78 | struct xfs_inode *ip; |
1da177e4 | 79 | |
4346cdd4 | 80 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
2903ff01 AV |
81 | f = fdget(hreq->fd); |
82 | if (!f.file) | |
4346cdd4 | 83 | return -EBADF; |
496ad9aa | 84 | inode = file_inode(f.file); |
4346cdd4 CH |
85 | } else { |
86 | error = user_lpath((const char __user *)hreq->path, &path); | |
87 | if (error) | |
88 | return error; | |
89 | inode = path.dentry->d_inode; | |
1da177e4 | 90 | } |
4346cdd4 CH |
91 | ip = XFS_I(inode); |
92 | ||
93 | /* | |
94 | * We can only generate handles for inodes residing on a XFS filesystem, | |
95 | * and only for regular files, directories or symbolic links. | |
96 | */ | |
97 | error = -EINVAL; | |
98 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
99 | goto out_put; | |
100 | ||
101 | error = -EBADF; | |
102 | if (!S_ISREG(inode->i_mode) && | |
103 | !S_ISDIR(inode->i_mode) && | |
104 | !S_ISLNK(inode->i_mode)) | |
105 | goto out_put; | |
106 | ||
107 | ||
108 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
109 | ||
110 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
111 | /* | |
112 | * This handle only contains an fsid, zero the rest. | |
113 | */ | |
114 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
115 | hsize = sizeof(xfs_fsid_t); | |
116 | } else { | |
1da177e4 LT |
117 | int lock_mode; |
118 | ||
1da177e4 | 119 | lock_mode = xfs_ilock_map_shared(ip); |
c6143911 CH |
120 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
121 | sizeof(handle.ha_fid.fid_len); | |
122 | handle.ha_fid.fid_pad = 0; | |
123 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
124 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
125 | xfs_iunlock_map_shared(ip, lock_mode); |
126 | ||
127 | hsize = XFS_HSIZE(handle); | |
128 | } | |
129 | ||
4346cdd4 | 130 | error = -EFAULT; |
743bb465 | 131 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
132 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
133 | goto out_put; | |
1da177e4 | 134 | |
4346cdd4 CH |
135 | error = 0; |
136 | ||
137 | out_put: | |
138 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
2903ff01 | 139 | fdput(f); |
4346cdd4 CH |
140 | else |
141 | path_put(&path); | |
142 | return error; | |
1da177e4 LT |
143 | } |
144 | ||
1da177e4 | 145 | /* |
d296d30a CH |
146 | * No need to do permission checks on the various pathname components |
147 | * as the handle operations are privileged. | |
1da177e4 LT |
148 | */ |
149 | STATIC int | |
d296d30a CH |
150 | xfs_handle_acceptable( |
151 | void *context, | |
152 | struct dentry *dentry) | |
153 | { | |
154 | return 1; | |
155 | } | |
156 | ||
157 | /* | |
158 | * Convert userspace handle data into a dentry. | |
159 | */ | |
160 | struct dentry * | |
161 | xfs_handle_to_dentry( | |
162 | struct file *parfilp, | |
163 | void __user *uhandle, | |
164 | u32 hlen) | |
1da177e4 | 165 | { |
1da177e4 | 166 | xfs_handle_t handle; |
d296d30a | 167 | struct xfs_fid64 fid; |
1da177e4 LT |
168 | |
169 | /* | |
170 | * Only allow handle opens under a directory. | |
171 | */ | |
496ad9aa | 172 | if (!S_ISDIR(file_inode(parfilp)->i_mode)) |
d296d30a CH |
173 | return ERR_PTR(-ENOTDIR); |
174 | ||
175 | if (hlen != sizeof(xfs_handle_t)) | |
176 | return ERR_PTR(-EINVAL); | |
177 | if (copy_from_user(&handle, uhandle, hlen)) | |
178 | return ERR_PTR(-EFAULT); | |
179 | if (handle.ha_fid.fid_len != | |
180 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
181 | return ERR_PTR(-EINVAL); | |
182 | ||
183 | memset(&fid, 0, sizeof(struct fid)); | |
184 | fid.ino = handle.ha_fid.fid_ino; | |
185 | fid.gen = handle.ha_fid.fid_gen; | |
186 | ||
187 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
188 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
189 | xfs_handle_acceptable, NULL); | |
190 | } | |
1da177e4 | 191 | |
d296d30a CH |
192 | STATIC struct dentry * |
193 | xfs_handlereq_to_dentry( | |
194 | struct file *parfilp, | |
195 | xfs_fsop_handlereq_t *hreq) | |
196 | { | |
197 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
198 | } |
199 | ||
d5547f9f | 200 | int |
1da177e4 | 201 | xfs_open_by_handle( |
1da177e4 | 202 | struct file *parfilp, |
d296d30a | 203 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 204 | { |
745ca247 | 205 | const struct cred *cred = current_cred(); |
1da177e4 | 206 | int error; |
d296d30a | 207 | int fd; |
1da177e4 LT |
208 | int permflag; |
209 | struct file *filp; | |
210 | struct inode *inode; | |
211 | struct dentry *dentry; | |
1a1d7724 | 212 | fmode_t fmode; |
765927b2 | 213 | struct path path; |
1da177e4 LT |
214 | |
215 | if (!capable(CAP_SYS_ADMIN)) | |
216 | return -XFS_ERROR(EPERM); | |
1da177e4 | 217 | |
d296d30a CH |
218 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
219 | if (IS_ERR(dentry)) | |
220 | return PTR_ERR(dentry); | |
221 | inode = dentry->d_inode; | |
1da177e4 LT |
222 | |
223 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
224 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
d296d30a CH |
225 | error = -XFS_ERROR(EPERM); |
226 | goto out_dput; | |
1da177e4 LT |
227 | } |
228 | ||
229 | #if BITS_PER_LONG != 32 | |
743bb465 | 230 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 231 | #endif |
d296d30a | 232 | |
743bb465 | 233 | permflag = hreq->oflags; |
1a1d7724 | 234 | fmode = OPEN_FMODE(permflag); |
1da177e4 | 235 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && |
1a1d7724 | 236 | (fmode & FMODE_WRITE) && IS_APPEND(inode)) { |
d296d30a CH |
237 | error = -XFS_ERROR(EPERM); |
238 | goto out_dput; | |
1da177e4 LT |
239 | } |
240 | ||
1a1d7724 | 241 | if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { |
d296d30a CH |
242 | error = -XFS_ERROR(EACCES); |
243 | goto out_dput; | |
1da177e4 LT |
244 | } |
245 | ||
246 | /* Can't write directories. */ | |
1a1d7724 | 247 | if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) { |
d296d30a CH |
248 | error = -XFS_ERROR(EISDIR); |
249 | goto out_dput; | |
1da177e4 LT |
250 | } |
251 | ||
862a6293 | 252 | fd = get_unused_fd_flags(0); |
d296d30a CH |
253 | if (fd < 0) { |
254 | error = fd; | |
255 | goto out_dput; | |
1da177e4 LT |
256 | } |
257 | ||
765927b2 AV |
258 | path.mnt = parfilp->f_path.mnt; |
259 | path.dentry = dentry; | |
260 | filp = dentry_open(&path, hreq->oflags, cred); | |
261 | dput(dentry); | |
1da177e4 | 262 | if (IS_ERR(filp)) { |
d296d30a CH |
263 | put_unused_fd(fd); |
264 | return PTR_ERR(filp); | |
1da177e4 | 265 | } |
4d4be482 | 266 | |
03209378 | 267 | if (S_ISREG(inode->i_mode)) { |
2e2e7bb1 | 268 | filp->f_flags |= O_NOATIME; |
4d4be482 | 269 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 270 | } |
1da177e4 | 271 | |
d296d30a CH |
272 | fd_install(fd, filp); |
273 | return fd; | |
274 | ||
275 | out_dput: | |
276 | dput(dentry); | |
277 | return error; | |
1da177e4 LT |
278 | } |
279 | ||
804c83c3 CH |
280 | /* |
281 | * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's | |
282 | * unused first argument. | |
283 | */ | |
284 | STATIC int | |
285 | do_readlink( | |
286 | char __user *buffer, | |
287 | int buflen, | |
288 | const char *link) | |
289 | { | |
290 | int len; | |
291 | ||
292 | len = PTR_ERR(link); | |
293 | if (IS_ERR(link)) | |
294 | goto out; | |
295 | ||
296 | len = strlen(link); | |
297 | if (len > (unsigned) buflen) | |
298 | len = buflen; | |
299 | if (copy_to_user(buffer, link, len)) | |
300 | len = -EFAULT; | |
301 | out: | |
302 | return len; | |
303 | } | |
304 | ||
305 | ||
d5547f9f | 306 | int |
1da177e4 | 307 | xfs_readlink_by_handle( |
d296d30a CH |
308 | struct file *parfilp, |
309 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 310 | { |
d296d30a | 311 | struct dentry *dentry; |
1da177e4 | 312 | __u32 olen; |
804c83c3 CH |
313 | void *link; |
314 | int error; | |
1da177e4 LT |
315 | |
316 | if (!capable(CAP_SYS_ADMIN)) | |
317 | return -XFS_ERROR(EPERM); | |
1da177e4 | 318 | |
d296d30a CH |
319 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
320 | if (IS_ERR(dentry)) | |
321 | return PTR_ERR(dentry); | |
1da177e4 LT |
322 | |
323 | /* Restrict this handle operation to symlinks only. */ | |
d296d30a | 324 | if (!S_ISLNK(dentry->d_inode->i_mode)) { |
804c83c3 | 325 | error = -XFS_ERROR(EINVAL); |
d296d30a | 326 | goto out_dput; |
1da177e4 LT |
327 | } |
328 | ||
743bb465 | 329 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
804c83c3 | 330 | error = -XFS_ERROR(EFAULT); |
d296d30a | 331 | goto out_dput; |
1da177e4 | 332 | } |
1da177e4 | 333 | |
804c83c3 | 334 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
d296d30a CH |
335 | if (!link) { |
336 | error = -XFS_ERROR(ENOMEM); | |
337 | goto out_dput; | |
338 | } | |
1da177e4 | 339 | |
d296d30a | 340 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
67fcaa73 | 341 | if (error) |
804c83c3 | 342 | goto out_kfree; |
743bb465 | 343 | error = do_readlink(hreq->ohandle, olen, link); |
804c83c3 CH |
344 | if (error) |
345 | goto out_kfree; | |
67fcaa73 | 346 | |
804c83c3 CH |
347 | out_kfree: |
348 | kfree(link); | |
d296d30a CH |
349 | out_dput: |
350 | dput(dentry); | |
804c83c3 | 351 | return error; |
1da177e4 LT |
352 | } |
353 | ||
354 | STATIC int | |
355 | xfs_fssetdm_by_handle( | |
d296d30a CH |
356 | struct file *parfilp, |
357 | void __user *arg) | |
1da177e4 LT |
358 | { |
359 | int error; | |
360 | struct fsdmidata fsd; | |
361 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 362 | struct dentry *dentry; |
1da177e4 LT |
363 | |
364 | if (!capable(CAP_MKNOD)) | |
365 | return -XFS_ERROR(EPERM); | |
366 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) | |
367 | return -XFS_ERROR(EFAULT); | |
368 | ||
d9457dc0 JK |
369 | error = mnt_want_write_file(parfilp); |
370 | if (error) | |
371 | return error; | |
372 | ||
d296d30a | 373 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
d9457dc0 JK |
374 | if (IS_ERR(dentry)) { |
375 | mnt_drop_write_file(parfilp); | |
d296d30a | 376 | return PTR_ERR(dentry); |
d9457dc0 | 377 | } |
1da177e4 | 378 | |
d296d30a | 379 | if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { |
6e7f75ea CH |
380 | error = -XFS_ERROR(EPERM); |
381 | goto out; | |
1da177e4 LT |
382 | } |
383 | ||
384 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
6e7f75ea CH |
385 | error = -XFS_ERROR(EFAULT); |
386 | goto out; | |
1da177e4 LT |
387 | } |
388 | ||
d296d30a | 389 | error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, |
6e7f75ea | 390 | fsd.fsd_dmstate); |
1da177e4 | 391 | |
6e7f75ea | 392 | out: |
d9457dc0 | 393 | mnt_drop_write_file(parfilp); |
d296d30a | 394 | dput(dentry); |
6e7f75ea | 395 | return error; |
1da177e4 LT |
396 | } |
397 | ||
398 | STATIC int | |
399 | xfs_attrlist_by_handle( | |
d296d30a CH |
400 | struct file *parfilp, |
401 | void __user *arg) | |
1da177e4 | 402 | { |
d296d30a | 403 | int error = -ENOMEM; |
1da177e4 LT |
404 | attrlist_cursor_kern_t *cursor; |
405 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
d296d30a | 406 | struct dentry *dentry; |
1da177e4 LT |
407 | char *kbuf; |
408 | ||
409 | if (!capable(CAP_SYS_ADMIN)) | |
410 | return -XFS_ERROR(EPERM); | |
411 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) | |
412 | return -XFS_ERROR(EFAULT); | |
413 | if (al_hreq.buflen > XATTR_LIST_MAX) | |
414 | return -XFS_ERROR(EINVAL); | |
415 | ||
90ad58a8 CH |
416 | /* |
417 | * Reject flags, only allow namespaces. | |
418 | */ | |
419 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
420 | return -XFS_ERROR(EINVAL); | |
421 | ||
d296d30a CH |
422 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
423 | if (IS_ERR(dentry)) | |
424 | return PTR_ERR(dentry); | |
1da177e4 | 425 | |
dd700d94 ES |
426 | kbuf = kmem_zalloc(al_hreq.buflen, KM_SLEEP | KM_MAYFAIL); |
427 | if (!kbuf) { | |
428 | kbuf = kmem_zalloc_large(al_hreq.buflen); | |
429 | if (!kbuf) | |
430 | goto out_dput; | |
431 | } | |
1da177e4 LT |
432 | |
433 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
d296d30a | 434 | error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, |
739bfb2a | 435 | al_hreq.flags, cursor); |
1da177e4 LT |
436 | if (error) |
437 | goto out_kfree; | |
438 | ||
439 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
440 | error = -EFAULT; | |
441 | ||
442 | out_kfree: | |
dd700d94 ES |
443 | if (is_vmalloc_addr(kbuf)) |
444 | kmem_free_large(kbuf); | |
445 | else | |
446 | kmem_free(kbuf); | |
d296d30a CH |
447 | out_dput: |
448 | dput(dentry); | |
449 | return error; | |
1da177e4 LT |
450 | } |
451 | ||
28750975 | 452 | int |
1da177e4 | 453 | xfs_attrmulti_attr_get( |
739bfb2a | 454 | struct inode *inode, |
a9273ca5 DC |
455 | unsigned char *name, |
456 | unsigned char __user *ubuf, | |
1da177e4 LT |
457 | __uint32_t *len, |
458 | __uint32_t flags) | |
459 | { | |
a9273ca5 | 460 | unsigned char *kbuf; |
1da177e4 | 461 | int error = EFAULT; |
e8b0ebaa | 462 | |
1da177e4 LT |
463 | if (*len > XATTR_SIZE_MAX) |
464 | return EINVAL; | |
ad650f5b DC |
465 | kbuf = kmem_zalloc(*len, KM_SLEEP | KM_MAYFAIL); |
466 | if (!kbuf) { | |
467 | kbuf = kmem_zalloc_large(*len); | |
468 | if (!kbuf) | |
469 | return ENOMEM; | |
470 | } | |
1da177e4 | 471 | |
e8b0ebaa | 472 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
473 | if (error) |
474 | goto out_kfree; | |
475 | ||
476 | if (copy_to_user(ubuf, kbuf, *len)) | |
477 | error = EFAULT; | |
478 | ||
479 | out_kfree: | |
ad650f5b DC |
480 | if (is_vmalloc_addr(kbuf)) |
481 | kmem_free_large(kbuf); | |
482 | else | |
483 | kmem_free(kbuf); | |
1da177e4 LT |
484 | return error; |
485 | } | |
486 | ||
28750975 | 487 | int |
1da177e4 | 488 | xfs_attrmulti_attr_set( |
739bfb2a | 489 | struct inode *inode, |
a9273ca5 DC |
490 | unsigned char *name, |
491 | const unsigned char __user *ubuf, | |
1da177e4 LT |
492 | __uint32_t len, |
493 | __uint32_t flags) | |
494 | { | |
a9273ca5 | 495 | unsigned char *kbuf; |
1da177e4 LT |
496 | int error = EFAULT; |
497 | ||
739bfb2a | 498 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
499 | return EPERM; |
500 | if (len > XATTR_SIZE_MAX) | |
501 | return EINVAL; | |
502 | ||
0e639bde LZ |
503 | kbuf = memdup_user(ubuf, len); |
504 | if (IS_ERR(kbuf)) | |
505 | return PTR_ERR(kbuf); | |
e8b0ebaa | 506 | |
739bfb2a | 507 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 | 508 | |
1da177e4 LT |
509 | return error; |
510 | } | |
511 | ||
28750975 | 512 | int |
1da177e4 | 513 | xfs_attrmulti_attr_remove( |
739bfb2a | 514 | struct inode *inode, |
a9273ca5 | 515 | unsigned char *name, |
1da177e4 LT |
516 | __uint32_t flags) |
517 | { | |
739bfb2a | 518 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 519 | return EPERM; |
739bfb2a | 520 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
521 | } |
522 | ||
523 | STATIC int | |
524 | xfs_attrmulti_by_handle( | |
42a74f20 | 525 | struct file *parfilp, |
d296d30a | 526 | void __user *arg) |
1da177e4 LT |
527 | { |
528 | int error; | |
529 | xfs_attr_multiop_t *ops; | |
530 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 531 | struct dentry *dentry; |
1da177e4 | 532 | unsigned int i, size; |
a9273ca5 | 533 | unsigned char *attr_name; |
1da177e4 LT |
534 | |
535 | if (!capable(CAP_SYS_ADMIN)) | |
536 | return -XFS_ERROR(EPERM); | |
537 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) | |
538 | return -XFS_ERROR(EFAULT); | |
539 | ||
fda168c2 ZW |
540 | /* overflow check */ |
541 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) | |
542 | return -E2BIG; | |
543 | ||
d296d30a CH |
544 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
545 | if (IS_ERR(dentry)) | |
546 | return PTR_ERR(dentry); | |
1da177e4 LT |
547 | |
548 | error = E2BIG; | |
e182f57a | 549 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 550 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 551 | goto out_dput; |
1da177e4 | 552 | |
0e639bde LZ |
553 | ops = memdup_user(am_hreq.ops, size); |
554 | if (IS_ERR(ops)) { | |
555 | error = PTR_ERR(ops); | |
d296d30a | 556 | goto out_dput; |
0e639bde | 557 | } |
1da177e4 LT |
558 | |
559 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); | |
560 | if (!attr_name) | |
561 | goto out_kfree_ops; | |
562 | ||
1da177e4 LT |
563 | error = 0; |
564 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 565 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
566 | ops[i].am_attrname, MAXNAMELEN); |
567 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
568 | error = -ERANGE; | |
569 | if (ops[i].am_error < 0) | |
570 | break; | |
571 | ||
572 | switch (ops[i].am_opcode) { | |
573 | case ATTR_OP_GET: | |
d296d30a CH |
574 | ops[i].am_error = xfs_attrmulti_attr_get( |
575 | dentry->d_inode, attr_name, | |
576 | ops[i].am_attrvalue, &ops[i].am_length, | |
577 | ops[i].am_flags); | |
1da177e4 LT |
578 | break; |
579 | case ATTR_OP_SET: | |
a561be71 | 580 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
581 | if (ops[i].am_error) |
582 | break; | |
d296d30a CH |
583 | ops[i].am_error = xfs_attrmulti_attr_set( |
584 | dentry->d_inode, attr_name, | |
585 | ops[i].am_attrvalue, ops[i].am_length, | |
586 | ops[i].am_flags); | |
2a79f17e | 587 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
588 | break; |
589 | case ATTR_OP_REMOVE: | |
a561be71 | 590 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
591 | if (ops[i].am_error) |
592 | break; | |
d296d30a CH |
593 | ops[i].am_error = xfs_attrmulti_attr_remove( |
594 | dentry->d_inode, attr_name, | |
595 | ops[i].am_flags); | |
2a79f17e | 596 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
597 | break; |
598 | default: | |
599 | ops[i].am_error = EINVAL; | |
600 | } | |
601 | } | |
602 | ||
603 | if (copy_to_user(am_hreq.ops, ops, size)) | |
604 | error = XFS_ERROR(EFAULT); | |
605 | ||
606 | kfree(attr_name); | |
607 | out_kfree_ops: | |
608 | kfree(ops); | |
d296d30a CH |
609 | out_dput: |
610 | dput(dentry); | |
1da177e4 LT |
611 | return -error; |
612 | } | |
613 | ||
d5547f9f | 614 | int |
1da177e4 | 615 | xfs_ioc_space( |
993386c1 | 616 | struct xfs_inode *ip, |
f37ea149 | 617 | struct inode *inode, |
1da177e4 LT |
618 | struct file *filp, |
619 | int ioflags, | |
620 | unsigned int cmd, | |
743bb465 | 621 | xfs_flock64_t *bf) |
1da177e4 | 622 | { |
1da177e4 LT |
623 | int attr_flags = 0; |
624 | int error; | |
625 | ||
743bb465 | 626 | /* |
627 | * Only allow the sys admin to reserve space unless | |
628 | * unwritten extents are enabled. | |
629 | */ | |
630 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
631 | !capable(CAP_SYS_ADMIN)) | |
632 | return -XFS_ERROR(EPERM); | |
633 | ||
f37ea149 | 634 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
1da177e4 LT |
635 | return -XFS_ERROR(EPERM); |
636 | ||
ad4a8ac4 | 637 | if (!(filp->f_mode & FMODE_WRITE)) |
1da177e4 LT |
638 | return -XFS_ERROR(EBADF); |
639 | ||
f37ea149 | 640 | if (!S_ISREG(inode->i_mode)) |
1da177e4 LT |
641 | return -XFS_ERROR(EINVAL); |
642 | ||
1da177e4 | 643 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
0f285c8a | 644 | attr_flags |= XFS_ATTR_NONBLOCK; |
82878897 DC |
645 | |
646 | if (filp->f_flags & O_DSYNC) | |
647 | attr_flags |= XFS_ATTR_SYNC; | |
648 | ||
1da177e4 | 649 | if (ioflags & IO_INVIS) |
0f285c8a | 650 | attr_flags |= XFS_ATTR_DMI; |
1da177e4 | 651 | |
d9457dc0 JK |
652 | error = mnt_want_write_file(filp); |
653 | if (error) | |
654 | return error; | |
743bb465 | 655 | error = xfs_change_file_space(ip, cmd, bf, filp->f_pos, attr_flags); |
d9457dc0 | 656 | mnt_drop_write_file(filp); |
1da177e4 LT |
657 | return -error; |
658 | } | |
659 | ||
660 | STATIC int | |
661 | xfs_ioc_bulkstat( | |
662 | xfs_mount_t *mp, | |
663 | unsigned int cmd, | |
664 | void __user *arg) | |
665 | { | |
666 | xfs_fsop_bulkreq_t bulkreq; | |
667 | int count; /* # of records returned */ | |
668 | xfs_ino_t inlast; /* last inode number */ | |
669 | int done; | |
670 | int error; | |
671 | ||
672 | /* done = 1 if there are more stats to get and if bulkstat */ | |
673 | /* should be called again (unused here, but used in dmapi) */ | |
674 | ||
675 | if (!capable(CAP_SYS_ADMIN)) | |
676 | return -EPERM; | |
677 | ||
678 | if (XFS_FORCED_SHUTDOWN(mp)) | |
679 | return -XFS_ERROR(EIO); | |
680 | ||
681 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
682 | return -XFS_ERROR(EFAULT); | |
683 | ||
684 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
685 | return -XFS_ERROR(EFAULT); | |
686 | ||
687 | if ((count = bulkreq.icount) <= 0) | |
688 | return -XFS_ERROR(EINVAL); | |
689 | ||
cd57e594 LM |
690 | if (bulkreq.ubuffer == NULL) |
691 | return -XFS_ERROR(EINVAL); | |
692 | ||
1da177e4 LT |
693 | if (cmd == XFS_IOC_FSINUMBERS) |
694 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 695 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 LT |
696 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
697 | error = xfs_bulkstat_single(mp, &inlast, | |
698 | bulkreq.ubuffer, &done); | |
cd57e594 | 699 | else /* XFS_IOC_FSBULKSTAT */ |
7dce11db CH |
700 | error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, |
701 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
702 | &done); | |
1da177e4 LT |
703 | |
704 | if (error) | |
705 | return -error; | |
706 | ||
707 | if (bulkreq.ocount != NULL) { | |
708 | if (copy_to_user(bulkreq.lastip, &inlast, | |
709 | sizeof(xfs_ino_t))) | |
710 | return -XFS_ERROR(EFAULT); | |
711 | ||
712 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
713 | return -XFS_ERROR(EFAULT); | |
714 | } | |
715 | ||
716 | return 0; | |
717 | } | |
718 | ||
719 | STATIC int | |
720 | xfs_ioc_fsgeometry_v1( | |
721 | xfs_mount_t *mp, | |
722 | void __user *arg) | |
723 | { | |
eeb2036b | 724 | xfs_fsop_geom_t fsgeo; |
1da177e4 LT |
725 | int error; |
726 | ||
eeb2036b | 727 | error = xfs_fs_geometry(mp, &fsgeo, 3); |
1da177e4 LT |
728 | if (error) |
729 | return -error; | |
730 | ||
eeb2036b AE |
731 | /* |
732 | * Caller should have passed an argument of type | |
733 | * xfs_fsop_geom_v1_t. This is a proper subset of the | |
734 | * xfs_fsop_geom_t that xfs_fs_geometry() fills in. | |
735 | */ | |
736 | if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t))) | |
1da177e4 LT |
737 | return -XFS_ERROR(EFAULT); |
738 | return 0; | |
739 | } | |
740 | ||
741 | STATIC int | |
742 | xfs_ioc_fsgeometry( | |
743 | xfs_mount_t *mp, | |
744 | void __user *arg) | |
745 | { | |
746 | xfs_fsop_geom_t fsgeo; | |
747 | int error; | |
748 | ||
749 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
750 | if (error) | |
751 | return -error; | |
752 | ||
753 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
754 | return -XFS_ERROR(EFAULT); | |
755 | return 0; | |
756 | } | |
757 | ||
758 | /* | |
759 | * Linux extended inode flags interface. | |
760 | */ | |
1da177e4 LT |
761 | |
762 | STATIC unsigned int | |
763 | xfs_merge_ioc_xflags( | |
764 | unsigned int flags, | |
765 | unsigned int start) | |
766 | { | |
767 | unsigned int xflags = start; | |
768 | ||
39058a0e | 769 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
770 | xflags |= XFS_XFLAG_IMMUTABLE; |
771 | else | |
772 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 773 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
774 | xflags |= XFS_XFLAG_APPEND; |
775 | else | |
776 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 777 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
778 | xflags |= XFS_XFLAG_SYNC; |
779 | else | |
780 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 781 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
782 | xflags |= XFS_XFLAG_NOATIME; |
783 | else | |
784 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 785 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
786 | xflags |= XFS_XFLAG_NODUMP; |
787 | else | |
788 | xflags &= ~XFS_XFLAG_NODUMP; | |
789 | ||
790 | return xflags; | |
791 | } | |
792 | ||
793 | STATIC unsigned int | |
794 | xfs_di2lxflags( | |
795 | __uint16_t di_flags) | |
796 | { | |
797 | unsigned int flags = 0; | |
798 | ||
799 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 800 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 801 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 802 | flags |= FS_APPEND_FL; |
1da177e4 | 803 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 804 | flags |= FS_SYNC_FL; |
1da177e4 | 805 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 806 | flags |= FS_NOATIME_FL; |
1da177e4 | 807 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 808 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
809 | return flags; |
810 | } | |
811 | ||
c83bfab1 CH |
812 | STATIC int |
813 | xfs_ioc_fsgetxattr( | |
814 | xfs_inode_t *ip, | |
815 | int attr, | |
816 | void __user *arg) | |
817 | { | |
818 | struct fsxattr fa; | |
819 | ||
a122eb2f DR |
820 | memset(&fa, 0, sizeof(struct fsxattr)); |
821 | ||
c83bfab1 CH |
822 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
823 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
824 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
6743099c | 825 | fa.fsx_projid = xfs_get_projid(ip); |
c83bfab1 CH |
826 | |
827 | if (attr) { | |
828 | if (ip->i_afp) { | |
829 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
830 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
831 | sizeof(xfs_bmbt_rec_t); | |
832 | else | |
833 | fa.fsx_nextents = ip->i_d.di_anextents; | |
834 | } else | |
835 | fa.fsx_nextents = 0; | |
836 | } else { | |
837 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
838 | fa.fsx_nextents = ip->i_df.if_bytes / | |
839 | sizeof(xfs_bmbt_rec_t); | |
840 | else | |
841 | fa.fsx_nextents = ip->i_d.di_nextents; | |
842 | } | |
843 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
844 | ||
845 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
846 | return -EFAULT; | |
847 | return 0; | |
848 | } | |
849 | ||
25fe55e8 CH |
850 | STATIC void |
851 | xfs_set_diflags( | |
852 | struct xfs_inode *ip, | |
853 | unsigned int xflags) | |
854 | { | |
855 | unsigned int di_flags; | |
856 | ||
857 | /* can't set PREALLOC this way, just preserve it */ | |
858 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
859 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
860 | di_flags |= XFS_DIFLAG_IMMUTABLE; | |
861 | if (xflags & XFS_XFLAG_APPEND) | |
862 | di_flags |= XFS_DIFLAG_APPEND; | |
863 | if (xflags & XFS_XFLAG_SYNC) | |
864 | di_flags |= XFS_DIFLAG_SYNC; | |
865 | if (xflags & XFS_XFLAG_NOATIME) | |
866 | di_flags |= XFS_DIFLAG_NOATIME; | |
867 | if (xflags & XFS_XFLAG_NODUMP) | |
868 | di_flags |= XFS_DIFLAG_NODUMP; | |
869 | if (xflags & XFS_XFLAG_PROJINHERIT) | |
870 | di_flags |= XFS_DIFLAG_PROJINHERIT; | |
871 | if (xflags & XFS_XFLAG_NODEFRAG) | |
872 | di_flags |= XFS_DIFLAG_NODEFRAG; | |
873 | if (xflags & XFS_XFLAG_FILESTREAM) | |
874 | di_flags |= XFS_DIFLAG_FILESTREAM; | |
abbede1b | 875 | if (S_ISDIR(ip->i_d.di_mode)) { |
25fe55e8 CH |
876 | if (xflags & XFS_XFLAG_RTINHERIT) |
877 | di_flags |= XFS_DIFLAG_RTINHERIT; | |
878 | if (xflags & XFS_XFLAG_NOSYMLINKS) | |
879 | di_flags |= XFS_DIFLAG_NOSYMLINKS; | |
880 | if (xflags & XFS_XFLAG_EXTSZINHERIT) | |
881 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; | |
abbede1b | 882 | } else if (S_ISREG(ip->i_d.di_mode)) { |
25fe55e8 CH |
883 | if (xflags & XFS_XFLAG_REALTIME) |
884 | di_flags |= XFS_DIFLAG_REALTIME; | |
885 | if (xflags & XFS_XFLAG_EXTSIZE) | |
886 | di_flags |= XFS_DIFLAG_EXTSIZE; | |
887 | } | |
888 | ||
889 | ip->i_d.di_flags = di_flags; | |
890 | } | |
891 | ||
f13fae2d CH |
892 | STATIC void |
893 | xfs_diflags_to_linux( | |
894 | struct xfs_inode *ip) | |
895 | { | |
e4f75291 | 896 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
897 | unsigned int xflags = xfs_ip2xflags(ip); |
898 | ||
899 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
900 | inode->i_flags |= S_IMMUTABLE; | |
901 | else | |
902 | inode->i_flags &= ~S_IMMUTABLE; | |
903 | if (xflags & XFS_XFLAG_APPEND) | |
904 | inode->i_flags |= S_APPEND; | |
905 | else | |
906 | inode->i_flags &= ~S_APPEND; | |
907 | if (xflags & XFS_XFLAG_SYNC) | |
908 | inode->i_flags |= S_SYNC; | |
909 | else | |
910 | inode->i_flags &= ~S_SYNC; | |
911 | if (xflags & XFS_XFLAG_NOATIME) | |
912 | inode->i_flags |= S_NOATIME; | |
913 | else | |
914 | inode->i_flags &= ~S_NOATIME; | |
915 | } | |
25fe55e8 CH |
916 | |
917 | #define FSX_PROJID 1 | |
918 | #define FSX_EXTSIZE 2 | |
919 | #define FSX_XFLAGS 4 | |
920 | #define FSX_NONBLOCK 8 | |
921 | ||
922 | STATIC int | |
923 | xfs_ioctl_setattr( | |
924 | xfs_inode_t *ip, | |
925 | struct fsxattr *fa, | |
926 | int mask) | |
927 | { | |
928 | struct xfs_mount *mp = ip->i_mount; | |
929 | struct xfs_trans *tp; | |
930 | unsigned int lock_flags = 0; | |
7d095257 | 931 | struct xfs_dquot *udqp = NULL; |
92f8ff73 | 932 | struct xfs_dquot *pdqp = NULL; |
25fe55e8 CH |
933 | struct xfs_dquot *olddquot = NULL; |
934 | int code; | |
935 | ||
cca28fb8 | 936 | trace_xfs_ioctl_setattr(ip); |
25fe55e8 CH |
937 | |
938 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
939 | return XFS_ERROR(EROFS); | |
940 | if (XFS_FORCED_SHUTDOWN(mp)) | |
941 | return XFS_ERROR(EIO); | |
942 | ||
23963e54 | 943 | /* |
6743099c | 944 | * Disallow 32bit project ids when projid32bit feature is not enabled. |
23963e54 | 945 | */ |
6743099c AM |
946 | if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1) && |
947 | !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) | |
23963e54 AM |
948 | return XFS_ERROR(EINVAL); |
949 | ||
25fe55e8 CH |
950 | /* |
951 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
952 | * before we start any other transactions. Trying to do this later | |
953 | * is messy. We don't care to take a readlock to look at the ids | |
954 | * in inode here, because we can't hold it across the trans_reserve. | |
955 | * If the IDs do change before we take the ilock, we're covered | |
956 | * because the i_*dquot fields will get updated anyway. | |
957 | */ | |
958 | if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { | |
7d095257 | 959 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
25fe55e8 | 960 | ip->i_d.di_gid, fa->fsx_projid, |
92f8ff73 | 961 | XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp); |
25fe55e8 CH |
962 | if (code) |
963 | return code; | |
964 | } | |
965 | ||
966 | /* | |
967 | * For the other attributes, we acquire the inode lock and | |
968 | * first do an error checking pass. | |
969 | */ | |
970 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
971 | code = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); | |
972 | if (code) | |
973 | goto error_return; | |
974 | ||
975 | lock_flags = XFS_ILOCK_EXCL; | |
976 | xfs_ilock(ip, lock_flags); | |
977 | ||
978 | /* | |
979 | * CAP_FOWNER overrides the following restrictions: | |
980 | * | |
981 | * The user ID of the calling process must be equal | |
982 | * to the file owner ID, except in cases where the | |
983 | * CAP_FSETID capability is applicable. | |
984 | */ | |
91b77712 | 985 | if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) { |
25fe55e8 CH |
986 | code = XFS_ERROR(EPERM); |
987 | goto error_return; | |
988 | } | |
989 | ||
990 | /* | |
991 | * Do a quota reservation only if projid is actually going to change. | |
992 | */ | |
993 | if (mask & FSX_PROJID) { | |
7d095257 CH |
994 | if (XFS_IS_QUOTA_RUNNING(mp) && |
995 | XFS_IS_PQUOTA_ON(mp) && | |
6743099c | 996 | xfs_get_projid(ip) != fa->fsx_projid) { |
25fe55e8 | 997 | ASSERT(tp); |
92f8ff73 CS |
998 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, |
999 | pdqp, capable(CAP_FOWNER) ? | |
25fe55e8 CH |
1000 | XFS_QMOPT_FORCE_RES : 0); |
1001 | if (code) /* out of quota */ | |
1002 | goto error_return; | |
1003 | } | |
1004 | } | |
1005 | ||
1006 | if (mask & FSX_EXTSIZE) { | |
1007 | /* | |
1008 | * Can't change extent size if any extents are allocated. | |
1009 | */ | |
1010 | if (ip->i_d.di_nextents && | |
1011 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != | |
1012 | fa->fsx_extsize)) { | |
1013 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1014 | goto error_return; | |
1015 | } | |
1016 | ||
1017 | /* | |
1018 | * Extent size must be a multiple of the appropriate block | |
5315837d DC |
1019 | * size, if set at all. It must also be smaller than the |
1020 | * maximum extent size supported by the filesystem. | |
1021 | * | |
1022 | * Also, for non-realtime files, limit the extent size hint to | |
1023 | * half the size of the AGs in the filesystem so alignment | |
1024 | * doesn't result in extents larger than an AG. | |
25fe55e8 CH |
1025 | */ |
1026 | if (fa->fsx_extsize != 0) { | |
5315837d DC |
1027 | xfs_extlen_t size; |
1028 | xfs_fsblock_t extsize_fsb; | |
1029 | ||
1030 | extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); | |
1031 | if (extsize_fsb > MAXEXTLEN) { | |
1032 | code = XFS_ERROR(EINVAL); | |
1033 | goto error_return; | |
1034 | } | |
25fe55e8 CH |
1035 | |
1036 | if (XFS_IS_REALTIME_INODE(ip) || | |
1037 | ((mask & FSX_XFLAGS) && | |
1038 | (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { | |
1039 | size = mp->m_sb.sb_rextsize << | |
1040 | mp->m_sb.sb_blocklog; | |
1041 | } else { | |
1042 | size = mp->m_sb.sb_blocksize; | |
5315837d DC |
1043 | if (extsize_fsb > mp->m_sb.sb_agblocks / 2) { |
1044 | code = XFS_ERROR(EINVAL); | |
1045 | goto error_return; | |
1046 | } | |
25fe55e8 CH |
1047 | } |
1048 | ||
1049 | if (fa->fsx_extsize % size) { | |
1050 | code = XFS_ERROR(EINVAL); | |
1051 | goto error_return; | |
1052 | } | |
1053 | } | |
1054 | } | |
1055 | ||
1056 | ||
1057 | if (mask & FSX_XFLAGS) { | |
1058 | /* | |
1059 | * Can't change realtime flag if any extents are allocated. | |
1060 | */ | |
1061 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
1062 | (XFS_IS_REALTIME_INODE(ip)) != | |
1063 | (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1064 | code = XFS_ERROR(EINVAL); /* EFBIG? */ | |
1065 | goto error_return; | |
1066 | } | |
1067 | ||
1068 | /* | |
1069 | * If realtime flag is set then must have realtime data. | |
1070 | */ | |
1071 | if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1072 | if ((mp->m_sb.sb_rblocks == 0) || | |
1073 | (mp->m_sb.sb_rextsize == 0) || | |
1074 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { | |
1075 | code = XFS_ERROR(EINVAL); | |
1076 | goto error_return; | |
1077 | } | |
1078 | } | |
1079 | ||
1080 | /* | |
1081 | * Can't modify an immutable/append-only file unless | |
1082 | * we have appropriate permission. | |
1083 | */ | |
1084 | if ((ip->i_d.di_flags & | |
1085 | (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || | |
1086 | (fa->fsx_xflags & | |
1087 | (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && | |
1088 | !capable(CAP_LINUX_IMMUTABLE)) { | |
1089 | code = XFS_ERROR(EPERM); | |
1090 | goto error_return; | |
1091 | } | |
1092 | } | |
1093 | ||
ddc3415a | 1094 | xfs_trans_ijoin(tp, ip, 0); |
25fe55e8 CH |
1095 | |
1096 | /* | |
1097 | * Change file ownership. Must be the owner or privileged. | |
25fe55e8 CH |
1098 | */ |
1099 | if (mask & FSX_PROJID) { | |
1100 | /* | |
1101 | * CAP_FSETID overrides the following restrictions: | |
1102 | * | |
1103 | * The set-user-ID and set-group-ID bits of a file will be | |
1104 | * cleared upon successful return from chown() | |
1105 | */ | |
1106 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
1107 | !capable(CAP_FSETID)) | |
1108 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
1109 | ||
1110 | /* | |
1111 | * Change the ownerships and register quota modifications | |
1112 | * in the transaction. | |
1113 | */ | |
6743099c | 1114 | if (xfs_get_projid(ip) != fa->fsx_projid) { |
7d095257 CH |
1115 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { |
1116 | olddquot = xfs_qm_vop_chown(tp, ip, | |
92f8ff73 | 1117 | &ip->i_pdquot, pdqp); |
25fe55e8 | 1118 | } |
6743099c | 1119 | xfs_set_projid(ip, fa->fsx_projid); |
25fe55e8 CH |
1120 | |
1121 | /* | |
1122 | * We may have to rev the inode as well as | |
1123 | * the superblock version number since projids didn't | |
1124 | * exist before DINODE_VERSION_2 and SB_VERSION_NLINK. | |
1125 | */ | |
51ce16d5 | 1126 | if (ip->i_d.di_version == 1) |
25fe55e8 CH |
1127 | xfs_bump_ino_vers2(tp, ip); |
1128 | } | |
1129 | ||
1130 | } | |
1131 | ||
1132 | if (mask & FSX_EXTSIZE) | |
1133 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
f13fae2d | 1134 | if (mask & FSX_XFLAGS) { |
25fe55e8 | 1135 | xfs_set_diflags(ip, fa->fsx_xflags); |
f13fae2d CH |
1136 | xfs_diflags_to_linux(ip); |
1137 | } | |
25fe55e8 | 1138 | |
dcd79a14 | 1139 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); |
25fe55e8 | 1140 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
25fe55e8 CH |
1141 | |
1142 | XFS_STATS_INC(xs_ig_attrchg); | |
1143 | ||
1144 | /* | |
1145 | * If this is a synchronous mount, make sure that the | |
1146 | * transaction goes to disk before returning to the user. | |
1147 | * This is slightly sub-optimal in that truncates require | |
1148 | * two sync transactions instead of one for wsync filesystems. | |
1149 | * One for the truncate and one for the timestamps since we | |
1150 | * don't want to change the timestamps unless we're sure the | |
1151 | * truncate worked. Truncates are less than 1% of the laddis | |
1152 | * mix so this probably isn't worth the trouble to optimize. | |
1153 | */ | |
1154 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1155 | xfs_trans_set_sync(tp); | |
1156 | code = xfs_trans_commit(tp, 0); | |
1157 | xfs_iunlock(ip, lock_flags); | |
1158 | ||
1159 | /* | |
1160 | * Release any dquot(s) the inode had kept before chown. | |
1161 | */ | |
7d095257 CH |
1162 | xfs_qm_dqrele(olddquot); |
1163 | xfs_qm_dqrele(udqp); | |
92f8ff73 | 1164 | xfs_qm_dqrele(pdqp); |
25fe55e8 | 1165 | |
288699fe | 1166 | return code; |
25fe55e8 CH |
1167 | |
1168 | error_return: | |
7d095257 | 1169 | xfs_qm_dqrele(udqp); |
92f8ff73 | 1170 | xfs_qm_dqrele(pdqp); |
25fe55e8 CH |
1171 | xfs_trans_cancel(tp, 0); |
1172 | if (lock_flags) | |
1173 | xfs_iunlock(ip, lock_flags); | |
1174 | return code; | |
1175 | } | |
1176 | ||
1da177e4 | 1177 | STATIC int |
df26cfe8 | 1178 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1179 | xfs_inode_t *ip, |
1180 | struct file *filp, | |
1da177e4 LT |
1181 | void __user *arg) |
1182 | { | |
1183 | struct fsxattr fa; | |
25fe55e8 | 1184 | unsigned int mask; |
d9457dc0 | 1185 | int error; |
df26cfe8 LM |
1186 | |
1187 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1188 | return -EFAULT; | |
1da177e4 | 1189 | |
25fe55e8 | 1190 | mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; |
df26cfe8 | 1191 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 | 1192 | mask |= FSX_NONBLOCK; |
1da177e4 | 1193 | |
d9457dc0 JK |
1194 | error = mnt_want_write_file(filp); |
1195 | if (error) | |
1196 | return error; | |
1197 | error = xfs_ioctl_setattr(ip, &fa, mask); | |
1198 | mnt_drop_write_file(filp); | |
1199 | return -error; | |
df26cfe8 | 1200 | } |
1da177e4 | 1201 | |
df26cfe8 LM |
1202 | STATIC int |
1203 | xfs_ioc_getxflags( | |
1204 | xfs_inode_t *ip, | |
1205 | void __user *arg) | |
1206 | { | |
1207 | unsigned int flags; | |
1da177e4 | 1208 | |
df26cfe8 LM |
1209 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1210 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1211 | return -EFAULT; | |
1212 | return 0; | |
1213 | } | |
1da177e4 | 1214 | |
df26cfe8 LM |
1215 | STATIC int |
1216 | xfs_ioc_setxflags( | |
1217 | xfs_inode_t *ip, | |
1218 | struct file *filp, | |
1219 | void __user *arg) | |
1220 | { | |
25fe55e8 | 1221 | struct fsxattr fa; |
df26cfe8 | 1222 | unsigned int flags; |
25fe55e8 | 1223 | unsigned int mask; |
d9457dc0 | 1224 | int error; |
1da177e4 | 1225 | |
df26cfe8 LM |
1226 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1227 | return -EFAULT; | |
1da177e4 | 1228 | |
df26cfe8 LM |
1229 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1230 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1231 | FS_SYNC_FL)) | |
1232 | return -EOPNOTSUPP; | |
1da177e4 | 1233 | |
25fe55e8 | 1234 | mask = FSX_XFLAGS; |
df26cfe8 | 1235 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 CH |
1236 | mask |= FSX_NONBLOCK; |
1237 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); | |
1da177e4 | 1238 | |
d9457dc0 JK |
1239 | error = mnt_want_write_file(filp); |
1240 | if (error) | |
1241 | return error; | |
1242 | error = xfs_ioctl_setattr(ip, &fa, mask); | |
1243 | mnt_drop_write_file(filp); | |
1244 | return -error; | |
1da177e4 LT |
1245 | } |
1246 | ||
8a7141a8 ES |
1247 | STATIC int |
1248 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) | |
1249 | { | |
1250 | struct getbmap __user *base = *ap; | |
1251 | ||
1252 | /* copy only getbmap portion (not getbmapx) */ | |
1253 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
1254 | return XFS_ERROR(EFAULT); | |
1255 | ||
1256 | *ap += sizeof(struct getbmap); | |
1257 | return 0; | |
1258 | } | |
1259 | ||
1da177e4 LT |
1260 | STATIC int |
1261 | xfs_ioc_getbmap( | |
993386c1 | 1262 | struct xfs_inode *ip, |
1da177e4 LT |
1263 | int ioflags, |
1264 | unsigned int cmd, | |
1265 | void __user *arg) | |
1266 | { | |
8a7141a8 | 1267 | struct getbmapx bmx; |
1da177e4 LT |
1268 | int error; |
1269 | ||
8a7141a8 | 1270 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
1da177e4 LT |
1271 | return -XFS_ERROR(EFAULT); |
1272 | ||
8a7141a8 | 1273 | if (bmx.bmv_count < 2) |
1da177e4 LT |
1274 | return -XFS_ERROR(EINVAL); |
1275 | ||
8a7141a8 | 1276 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
1da177e4 | 1277 | if (ioflags & IO_INVIS) |
8a7141a8 | 1278 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1279 | |
8a7141a8 ES |
1280 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
1281 | (struct getbmap *)arg+1); | |
1da177e4 LT |
1282 | if (error) |
1283 | return -error; | |
1284 | ||
8a7141a8 ES |
1285 | /* copy back header - only size of getbmap */ |
1286 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
1da177e4 LT |
1287 | return -XFS_ERROR(EFAULT); |
1288 | return 0; | |
1289 | } | |
1290 | ||
8a7141a8 ES |
1291 | STATIC int |
1292 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) | |
1293 | { | |
1294 | struct getbmapx __user *base = *ap; | |
1295 | ||
1296 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
1297 | return XFS_ERROR(EFAULT); | |
1298 | ||
1299 | *ap += sizeof(struct getbmapx); | |
1300 | return 0; | |
1301 | } | |
1302 | ||
1da177e4 LT |
1303 | STATIC int |
1304 | xfs_ioc_getbmapx( | |
993386c1 | 1305 | struct xfs_inode *ip, |
1da177e4 LT |
1306 | void __user *arg) |
1307 | { | |
1308 | struct getbmapx bmx; | |
1da177e4 LT |
1309 | int error; |
1310 | ||
1311 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
1312 | return -XFS_ERROR(EFAULT); | |
1313 | ||
1314 | if (bmx.bmv_count < 2) | |
1315 | return -XFS_ERROR(EINVAL); | |
1316 | ||
8a7141a8 | 1317 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
1da177e4 LT |
1318 | return -XFS_ERROR(EINVAL); |
1319 | ||
8a7141a8 ES |
1320 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
1321 | (struct getbmapx *)arg+1); | |
1da177e4 LT |
1322 | if (error) |
1323 | return -error; | |
1324 | ||
8a7141a8 ES |
1325 | /* copy back header */ |
1326 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
1da177e4 LT |
1327 | return -XFS_ERROR(EFAULT); |
1328 | ||
1329 | return 0; | |
1330 | } | |
df26cfe8 | 1331 | |
4d4be482 CH |
1332 | /* |
1333 | * Note: some of the ioctl's return positive numbers as a | |
1334 | * byte count indicating success, such as readlink_by_handle. | |
1335 | * So we don't "sign flip" like most other routines. This means | |
1336 | * true errors need to be returned as a negative value. | |
1337 | */ | |
1338 | long | |
1339 | xfs_file_ioctl( | |
df26cfe8 | 1340 | struct file *filp, |
df26cfe8 | 1341 | unsigned int cmd, |
4d4be482 | 1342 | unsigned long p) |
df26cfe8 | 1343 | { |
496ad9aa | 1344 | struct inode *inode = file_inode(filp); |
4d4be482 CH |
1345 | struct xfs_inode *ip = XFS_I(inode); |
1346 | struct xfs_mount *mp = ip->i_mount; | |
1347 | void __user *arg = (void __user *)p; | |
1348 | int ioflags = 0; | |
df26cfe8 LM |
1349 | int error; |
1350 | ||
4d4be482 CH |
1351 | if (filp->f_mode & FMODE_NOCMTIME) |
1352 | ioflags |= IO_INVIS; | |
df26cfe8 | 1353 | |
cca28fb8 | 1354 | trace_xfs_file_ioctl(ip); |
4d4be482 CH |
1355 | |
1356 | switch (cmd) { | |
a46db608 CH |
1357 | case FITRIM: |
1358 | return xfs_ioc_trim(mp, arg); | |
df26cfe8 LM |
1359 | case XFS_IOC_ALLOCSP: |
1360 | case XFS_IOC_FREESP: | |
1361 | case XFS_IOC_RESVSP: | |
1362 | case XFS_IOC_UNRESVSP: | |
1363 | case XFS_IOC_ALLOCSP64: | |
1364 | case XFS_IOC_FREESP64: | |
1365 | case XFS_IOC_RESVSP64: | |
44722352 DC |
1366 | case XFS_IOC_UNRESVSP64: |
1367 | case XFS_IOC_ZERO_RANGE: { | |
743bb465 | 1368 | xfs_flock64_t bf; |
df26cfe8 | 1369 | |
743bb465 | 1370 | if (copy_from_user(&bf, arg, sizeof(bf))) |
1371 | return -XFS_ERROR(EFAULT); | |
1372 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); | |
1373 | } | |
df26cfe8 LM |
1374 | case XFS_IOC_DIOINFO: { |
1375 | struct dioattr da; | |
1376 | xfs_buftarg_t *target = | |
1377 | XFS_IS_REALTIME_INODE(ip) ? | |
1378 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1379 | ||
1380 | da.d_mem = da.d_miniosz = 1 << target->bt_sshift; | |
1381 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); | |
1382 | ||
1383 | if (copy_to_user(arg, &da, sizeof(da))) | |
1384 | return -XFS_ERROR(EFAULT); | |
1385 | return 0; | |
1386 | } | |
1387 | ||
1388 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1389 | case XFS_IOC_FSBULKSTAT: | |
1390 | case XFS_IOC_FSINUMBERS: | |
1391 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1392 | ||
1393 | case XFS_IOC_FSGEOMETRY_V1: | |
1394 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1395 | ||
1396 | case XFS_IOC_FSGEOMETRY: | |
1397 | return xfs_ioc_fsgeometry(mp, arg); | |
1398 | ||
1399 | case XFS_IOC_GETVERSION: | |
1400 | return put_user(inode->i_generation, (int __user *)arg); | |
1401 | ||
1402 | case XFS_IOC_FSGETXATTR: | |
1403 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1404 | case XFS_IOC_FSGETXATTRA: | |
1405 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1406 | case XFS_IOC_FSSETXATTR: |
1407 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1408 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1409 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1410 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1411 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1412 | |
1413 | case XFS_IOC_FSSETDM: { | |
1414 | struct fsdmidata dmi; | |
1415 | ||
1416 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
1417 | return -XFS_ERROR(EFAULT); | |
1418 | ||
d9457dc0 JK |
1419 | error = mnt_want_write_file(filp); |
1420 | if (error) | |
1421 | return error; | |
1422 | ||
df26cfe8 LM |
1423 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, |
1424 | dmi.fsd_dmstate); | |
d9457dc0 | 1425 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1426 | return -error; |
1427 | } | |
1428 | ||
1429 | case XFS_IOC_GETBMAP: | |
1430 | case XFS_IOC_GETBMAPA: | |
1431 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1432 | ||
1433 | case XFS_IOC_GETBMAPX: | |
1434 | return xfs_ioc_getbmapx(ip, arg); | |
1435 | ||
1436 | case XFS_IOC_FD_TO_HANDLE: | |
1437 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1438 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1439 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1440 | |
743bb465 | 1441 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
1442 | return -XFS_ERROR(EFAULT); | |
1443 | return xfs_find_handle(cmd, &hreq); | |
1444 | } | |
1445 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1446 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1447 | |
743bb465 | 1448 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1449 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1450 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1451 | } |
df26cfe8 | 1452 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1453 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1454 | |
743bb465 | 1455 | case XFS_IOC_READLINK_BY_HANDLE: { |
1456 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1457 | |
743bb465 | 1458 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
1459 | return -XFS_ERROR(EFAULT); | |
d296d30a | 1460 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1461 | } |
df26cfe8 | 1462 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1463 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1464 | |
1465 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1466 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1467 | |
1468 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1469 | struct xfs_swapext sxp; |
1470 | ||
1471 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
1472 | return -XFS_ERROR(EFAULT); | |
d9457dc0 JK |
1473 | error = mnt_want_write_file(filp); |
1474 | if (error) | |
1475 | return error; | |
743bb465 | 1476 | error = xfs_swapext(&sxp); |
d9457dc0 | 1477 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1478 | return -error; |
1479 | } | |
1480 | ||
1481 | case XFS_IOC_FSCOUNTS: { | |
1482 | xfs_fsop_counts_t out; | |
1483 | ||
1484 | error = xfs_fs_counts(mp, &out); | |
1485 | if (error) | |
1486 | return -error; | |
1487 | ||
1488 | if (copy_to_user(arg, &out, sizeof(out))) | |
1489 | return -XFS_ERROR(EFAULT); | |
1490 | return 0; | |
1491 | } | |
1492 | ||
1493 | case XFS_IOC_SET_RESBLKS: { | |
1494 | xfs_fsop_resblks_t inout; | |
1495 | __uint64_t in; | |
1496 | ||
1497 | if (!capable(CAP_SYS_ADMIN)) | |
1498 | return -EPERM; | |
1499 | ||
d5db0f97 ES |
1500 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
1501 | return -XFS_ERROR(EROFS); | |
1502 | ||
df26cfe8 LM |
1503 | if (copy_from_user(&inout, arg, sizeof(inout))) |
1504 | return -XFS_ERROR(EFAULT); | |
1505 | ||
d9457dc0 JK |
1506 | error = mnt_want_write_file(filp); |
1507 | if (error) | |
1508 | return error; | |
1509 | ||
df26cfe8 LM |
1510 | /* input parameter is passed in resblks field of structure */ |
1511 | in = inout.resblks; | |
1512 | error = xfs_reserve_blocks(mp, &in, &inout); | |
d9457dc0 | 1513 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1514 | if (error) |
1515 | return -error; | |
1516 | ||
1517 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
1518 | return -XFS_ERROR(EFAULT); | |
1519 | return 0; | |
1520 | } | |
1521 | ||
1522 | case XFS_IOC_GET_RESBLKS: { | |
1523 | xfs_fsop_resblks_t out; | |
1524 | ||
1525 | if (!capable(CAP_SYS_ADMIN)) | |
1526 | return -EPERM; | |
1527 | ||
1528 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1529 | if (error) | |
1530 | return -error; | |
1531 | ||
1532 | if (copy_to_user(arg, &out, sizeof(out))) | |
1533 | return -XFS_ERROR(EFAULT); | |
1534 | ||
1535 | return 0; | |
1536 | } | |
1537 | ||
1538 | case XFS_IOC_FSGROWFSDATA: { | |
1539 | xfs_growfs_data_t in; | |
1540 | ||
df26cfe8 LM |
1541 | if (copy_from_user(&in, arg, sizeof(in))) |
1542 | return -XFS_ERROR(EFAULT); | |
1543 | ||
d9457dc0 JK |
1544 | error = mnt_want_write_file(filp); |
1545 | if (error) | |
1546 | return error; | |
df26cfe8 | 1547 | error = xfs_growfs_data(mp, &in); |
d9457dc0 | 1548 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1549 | return -error; |
1550 | } | |
1551 | ||
1552 | case XFS_IOC_FSGROWFSLOG: { | |
1553 | xfs_growfs_log_t in; | |
1554 | ||
df26cfe8 LM |
1555 | if (copy_from_user(&in, arg, sizeof(in))) |
1556 | return -XFS_ERROR(EFAULT); | |
1557 | ||
d9457dc0 JK |
1558 | error = mnt_want_write_file(filp); |
1559 | if (error) | |
1560 | return error; | |
df26cfe8 | 1561 | error = xfs_growfs_log(mp, &in); |
d9457dc0 | 1562 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1563 | return -error; |
1564 | } | |
1565 | ||
1566 | case XFS_IOC_FSGROWFSRT: { | |
1567 | xfs_growfs_rt_t in; | |
1568 | ||
df26cfe8 LM |
1569 | if (copy_from_user(&in, arg, sizeof(in))) |
1570 | return -XFS_ERROR(EFAULT); | |
1571 | ||
d9457dc0 JK |
1572 | error = mnt_want_write_file(filp); |
1573 | if (error) | |
1574 | return error; | |
df26cfe8 | 1575 | error = xfs_growfs_rt(mp, &in); |
d9457dc0 | 1576 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1577 | return -error; |
1578 | } | |
1579 | ||
df26cfe8 LM |
1580 | case XFS_IOC_GOINGDOWN: { |
1581 | __uint32_t in; | |
1582 | ||
1583 | if (!capable(CAP_SYS_ADMIN)) | |
1584 | return -EPERM; | |
1585 | ||
1586 | if (get_user(in, (__uint32_t __user *)arg)) | |
1587 | return -XFS_ERROR(EFAULT); | |
1588 | ||
1589 | error = xfs_fs_goingdown(mp, in); | |
1590 | return -error; | |
1591 | } | |
1592 | ||
1593 | case XFS_IOC_ERROR_INJECTION: { | |
1594 | xfs_error_injection_t in; | |
1595 | ||
1596 | if (!capable(CAP_SYS_ADMIN)) | |
1597 | return -EPERM; | |
1598 | ||
1599 | if (copy_from_user(&in, arg, sizeof(in))) | |
1600 | return -XFS_ERROR(EFAULT); | |
1601 | ||
1602 | error = xfs_errortag_add(in.errtag, mp); | |
1603 | return -error; | |
1604 | } | |
1605 | ||
1606 | case XFS_IOC_ERROR_CLEARALL: | |
1607 | if (!capable(CAP_SYS_ADMIN)) | |
1608 | return -EPERM; | |
1609 | ||
1610 | error = xfs_errortag_clearall(mp, 1); | |
1611 | return -error; | |
1612 | ||
8ca149de BF |
1613 | case XFS_IOC_FREE_EOFBLOCKS: { |
1614 | struct xfs_eofblocks eofb; | |
1615 | ||
1616 | if (copy_from_user(&eofb, arg, sizeof(eofb))) | |
1617 | return -XFS_ERROR(EFAULT); | |
1618 | ||
1619 | if (eofb.eof_version != XFS_EOFBLOCKS_VERSION) | |
1620 | return -XFS_ERROR(EINVAL); | |
1621 | ||
1622 | if (eofb.eof_flags & ~XFS_EOF_FLAGS_VALID) | |
1623 | return -XFS_ERROR(EINVAL); | |
1624 | ||
3e3f9f58 BF |
1625 | if (memchr_inv(&eofb.pad32, 0, sizeof(eofb.pad32)) || |
1626 | memchr_inv(eofb.pad64, 0, sizeof(eofb.pad64))) | |
8ca149de BF |
1627 | return -XFS_ERROR(EINVAL); |
1628 | ||
1629 | error = xfs_icache_free_eofblocks(mp, &eofb); | |
1630 | return -error; | |
1631 | } | |
1632 | ||
df26cfe8 LM |
1633 | default: |
1634 | return -ENOTTY; | |
1635 | } | |
1636 | } |