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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" |
70a9883c | 20 | #include "xfs_shared.h" |
239880ef DC |
21 | #include "xfs_format.h" |
22 | #include "xfs_log_format.h" | |
23 | #include "xfs_trans_resv.h" | |
1da177e4 | 24 | #include "xfs_mount.h" |
1da177e4 | 25 | #include "xfs_inode.h" |
7bf446f8 | 26 | #include "xfs_ioctl.h" |
a4fbe6ab | 27 | #include "xfs_alloc.h" |
1da177e4 | 28 | #include "xfs_rtalloc.h" |
1da177e4 | 29 | #include "xfs_itable.h" |
a844f451 | 30 | #include "xfs_error.h" |
1da177e4 | 31 | #include "xfs_attr.h" |
a844f451 | 32 | #include "xfs_bmap.h" |
68988114 | 33 | #include "xfs_bmap_util.h" |
1da177e4 | 34 | #include "xfs_fsops.h" |
a46db608 | 35 | #include "xfs_discard.h" |
25fe55e8 | 36 | #include "xfs_quota.h" |
d296d30a | 37 | #include "xfs_export.h" |
0b1b213f | 38 | #include "xfs_trace.h" |
8ca149de | 39 | #include "xfs_icache.h" |
c24b5dfa | 40 | #include "xfs_symlink.h" |
a4fbe6ab | 41 | #include "xfs_trans.h" |
1da177e4 | 42 | |
16f7e0fe | 43 | #include <linux/capability.h> |
1da177e4 LT |
44 | #include <linux/dcache.h> |
45 | #include <linux/mount.h> | |
46 | #include <linux/namei.h> | |
47 | #include <linux/pagemap.h> | |
5a0e3ad6 | 48 | #include <linux/slab.h> |
d296d30a | 49 | #include <linux/exportfs.h> |
1da177e4 LT |
50 | |
51 | /* | |
52 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
53 | * a file or fs handle. | |
54 | * | |
55 | * XFS_IOC_PATH_TO_FSHANDLE | |
56 | * returns fs handle for a mount point or path within that mount point | |
57 | * XFS_IOC_FD_TO_HANDLE | |
58 | * returns full handle for a FD opened in user space | |
59 | * XFS_IOC_PATH_TO_HANDLE | |
60 | * returns full handle for a path | |
61 | */ | |
d5547f9f | 62 | int |
1da177e4 LT |
63 | xfs_find_handle( |
64 | unsigned int cmd, | |
743bb465 | 65 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
66 | { |
67 | int hsize; | |
68 | xfs_handle_t handle; | |
1da177e4 | 69 | struct inode *inode; |
a30b0367 | 70 | struct fd f = {NULL}; |
4346cdd4 | 71 | struct path path; |
2903ff01 | 72 | int error; |
4346cdd4 | 73 | struct xfs_inode *ip; |
1da177e4 | 74 | |
4346cdd4 | 75 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
2903ff01 AV |
76 | f = fdget(hreq->fd); |
77 | if (!f.file) | |
4346cdd4 | 78 | return -EBADF; |
496ad9aa | 79 | inode = file_inode(f.file); |
4346cdd4 CH |
80 | } else { |
81 | error = user_lpath((const char __user *)hreq->path, &path); | |
82 | if (error) | |
83 | return error; | |
84 | inode = path.dentry->d_inode; | |
1da177e4 | 85 | } |
4346cdd4 CH |
86 | ip = XFS_I(inode); |
87 | ||
88 | /* | |
89 | * We can only generate handles for inodes residing on a XFS filesystem, | |
90 | * and only for regular files, directories or symbolic links. | |
91 | */ | |
92 | error = -EINVAL; | |
93 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
94 | goto out_put; | |
95 | ||
96 | error = -EBADF; | |
97 | if (!S_ISREG(inode->i_mode) && | |
98 | !S_ISDIR(inode->i_mode) && | |
99 | !S_ISLNK(inode->i_mode)) | |
100 | goto out_put; | |
101 | ||
102 | ||
103 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
104 | ||
105 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
106 | /* | |
107 | * This handle only contains an fsid, zero the rest. | |
108 | */ | |
109 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
110 | hsize = sizeof(xfs_fsid_t); | |
111 | } else { | |
c6143911 CH |
112 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
113 | sizeof(handle.ha_fid.fid_len); | |
114 | handle.ha_fid.fid_pad = 0; | |
115 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
116 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
117 | |
118 | hsize = XFS_HSIZE(handle); | |
119 | } | |
120 | ||
4346cdd4 | 121 | error = -EFAULT; |
743bb465 | 122 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
123 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
124 | goto out_put; | |
1da177e4 | 125 | |
4346cdd4 CH |
126 | error = 0; |
127 | ||
128 | out_put: | |
129 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
2903ff01 | 130 | fdput(f); |
4346cdd4 CH |
131 | else |
132 | path_put(&path); | |
133 | return error; | |
1da177e4 LT |
134 | } |
135 | ||
1da177e4 | 136 | /* |
d296d30a CH |
137 | * No need to do permission checks on the various pathname components |
138 | * as the handle operations are privileged. | |
1da177e4 LT |
139 | */ |
140 | STATIC int | |
d296d30a CH |
141 | xfs_handle_acceptable( |
142 | void *context, | |
143 | struct dentry *dentry) | |
144 | { | |
145 | return 1; | |
146 | } | |
147 | ||
148 | /* | |
149 | * Convert userspace handle data into a dentry. | |
150 | */ | |
151 | struct dentry * | |
152 | xfs_handle_to_dentry( | |
153 | struct file *parfilp, | |
154 | void __user *uhandle, | |
155 | u32 hlen) | |
1da177e4 | 156 | { |
1da177e4 | 157 | xfs_handle_t handle; |
d296d30a | 158 | struct xfs_fid64 fid; |
1da177e4 LT |
159 | |
160 | /* | |
161 | * Only allow handle opens under a directory. | |
162 | */ | |
496ad9aa | 163 | if (!S_ISDIR(file_inode(parfilp)->i_mode)) |
d296d30a CH |
164 | return ERR_PTR(-ENOTDIR); |
165 | ||
166 | if (hlen != sizeof(xfs_handle_t)) | |
167 | return ERR_PTR(-EINVAL); | |
168 | if (copy_from_user(&handle, uhandle, hlen)) | |
169 | return ERR_PTR(-EFAULT); | |
170 | if (handle.ha_fid.fid_len != | |
171 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
172 | return ERR_PTR(-EINVAL); | |
173 | ||
174 | memset(&fid, 0, sizeof(struct fid)); | |
175 | fid.ino = handle.ha_fid.fid_ino; | |
176 | fid.gen = handle.ha_fid.fid_gen; | |
177 | ||
178 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
179 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
180 | xfs_handle_acceptable, NULL); | |
181 | } | |
1da177e4 | 182 | |
d296d30a CH |
183 | STATIC struct dentry * |
184 | xfs_handlereq_to_dentry( | |
185 | struct file *parfilp, | |
186 | xfs_fsop_handlereq_t *hreq) | |
187 | { | |
188 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
189 | } |
190 | ||
d5547f9f | 191 | int |
1da177e4 | 192 | xfs_open_by_handle( |
1da177e4 | 193 | struct file *parfilp, |
d296d30a | 194 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 195 | { |
745ca247 | 196 | const struct cred *cred = current_cred(); |
1da177e4 | 197 | int error; |
d296d30a | 198 | int fd; |
1da177e4 LT |
199 | int permflag; |
200 | struct file *filp; | |
201 | struct inode *inode; | |
202 | struct dentry *dentry; | |
1a1d7724 | 203 | fmode_t fmode; |
765927b2 | 204 | struct path path; |
1da177e4 LT |
205 | |
206 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 207 | return -EPERM; |
1da177e4 | 208 | |
d296d30a CH |
209 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
210 | if (IS_ERR(dentry)) | |
211 | return PTR_ERR(dentry); | |
212 | inode = dentry->d_inode; | |
1da177e4 LT |
213 | |
214 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
215 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
b474c7ae | 216 | error = -EPERM; |
d296d30a | 217 | goto out_dput; |
1da177e4 LT |
218 | } |
219 | ||
220 | #if BITS_PER_LONG != 32 | |
743bb465 | 221 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 222 | #endif |
d296d30a | 223 | |
743bb465 | 224 | permflag = hreq->oflags; |
1a1d7724 | 225 | fmode = OPEN_FMODE(permflag); |
1da177e4 | 226 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && |
1a1d7724 | 227 | (fmode & FMODE_WRITE) && IS_APPEND(inode)) { |
b474c7ae | 228 | error = -EPERM; |
d296d30a | 229 | goto out_dput; |
1da177e4 LT |
230 | } |
231 | ||
1a1d7724 | 232 | if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { |
b474c7ae | 233 | error = -EACCES; |
d296d30a | 234 | goto out_dput; |
1da177e4 LT |
235 | } |
236 | ||
237 | /* Can't write directories. */ | |
1a1d7724 | 238 | if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) { |
b474c7ae | 239 | error = -EISDIR; |
d296d30a | 240 | goto out_dput; |
1da177e4 LT |
241 | } |
242 | ||
862a6293 | 243 | fd = get_unused_fd_flags(0); |
d296d30a CH |
244 | if (fd < 0) { |
245 | error = fd; | |
246 | goto out_dput; | |
1da177e4 LT |
247 | } |
248 | ||
765927b2 AV |
249 | path.mnt = parfilp->f_path.mnt; |
250 | path.dentry = dentry; | |
251 | filp = dentry_open(&path, hreq->oflags, cred); | |
252 | dput(dentry); | |
1da177e4 | 253 | if (IS_ERR(filp)) { |
d296d30a CH |
254 | put_unused_fd(fd); |
255 | return PTR_ERR(filp); | |
1da177e4 | 256 | } |
4d4be482 | 257 | |
03209378 | 258 | if (S_ISREG(inode->i_mode)) { |
2e2e7bb1 | 259 | filp->f_flags |= O_NOATIME; |
4d4be482 | 260 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 261 | } |
1da177e4 | 262 | |
d296d30a CH |
263 | fd_install(fd, filp); |
264 | return fd; | |
265 | ||
266 | out_dput: | |
267 | dput(dentry); | |
268 | return error; | |
1da177e4 LT |
269 | } |
270 | ||
d5547f9f | 271 | int |
1da177e4 | 272 | xfs_readlink_by_handle( |
d296d30a CH |
273 | struct file *parfilp, |
274 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 275 | { |
d296d30a | 276 | struct dentry *dentry; |
1da177e4 | 277 | __u32 olen; |
804c83c3 CH |
278 | void *link; |
279 | int error; | |
1da177e4 LT |
280 | |
281 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 282 | return -EPERM; |
1da177e4 | 283 | |
d296d30a CH |
284 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
285 | if (IS_ERR(dentry)) | |
286 | return PTR_ERR(dentry); | |
1da177e4 LT |
287 | |
288 | /* Restrict this handle operation to symlinks only. */ | |
d296d30a | 289 | if (!S_ISLNK(dentry->d_inode->i_mode)) { |
b474c7ae | 290 | error = -EINVAL; |
d296d30a | 291 | goto out_dput; |
1da177e4 LT |
292 | } |
293 | ||
743bb465 | 294 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
b474c7ae | 295 | error = -EFAULT; |
d296d30a | 296 | goto out_dput; |
1da177e4 | 297 | } |
1da177e4 | 298 | |
804c83c3 | 299 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
d296d30a | 300 | if (!link) { |
b474c7ae | 301 | error = -ENOMEM; |
d296d30a CH |
302 | goto out_dput; |
303 | } | |
1da177e4 | 304 | |
2451337d | 305 | error = xfs_readlink(XFS_I(dentry->d_inode), link); |
67fcaa73 | 306 | if (error) |
804c83c3 | 307 | goto out_kfree; |
5d826c84 | 308 | error = readlink_copy(hreq->ohandle, olen, link); |
804c83c3 CH |
309 | if (error) |
310 | goto out_kfree; | |
67fcaa73 | 311 | |
804c83c3 CH |
312 | out_kfree: |
313 | kfree(link); | |
d296d30a CH |
314 | out_dput: |
315 | dput(dentry); | |
804c83c3 | 316 | return error; |
1da177e4 LT |
317 | } |
318 | ||
c24b5dfa DC |
319 | int |
320 | xfs_set_dmattrs( | |
321 | xfs_inode_t *ip, | |
322 | u_int evmask, | |
323 | u_int16_t state) | |
324 | { | |
325 | xfs_mount_t *mp = ip->i_mount; | |
326 | xfs_trans_t *tp; | |
327 | int error; | |
328 | ||
329 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 330 | return -EPERM; |
c24b5dfa DC |
331 | |
332 | if (XFS_FORCED_SHUTDOWN(mp)) | |
2451337d | 333 | return -EIO; |
c24b5dfa DC |
334 | |
335 | tp = xfs_trans_alloc(mp, XFS_TRANS_SET_DMATTRS); | |
3d3c8b52 | 336 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); |
c24b5dfa DC |
337 | if (error) { |
338 | xfs_trans_cancel(tp, 0); | |
339 | return error; | |
340 | } | |
341 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
342 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
343 | ||
344 | ip->i_d.di_dmevmask = evmask; | |
345 | ip->i_d.di_dmstate = state; | |
346 | ||
347 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
348 | error = xfs_trans_commit(tp, 0); | |
349 | ||
350 | return error; | |
351 | } | |
352 | ||
1da177e4 LT |
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)) | |
b474c7ae | 364 | return -EPERM; |
1da177e4 | 365 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) |
b474c7ae | 366 | return -EFAULT; |
1da177e4 | 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)) { |
b474c7ae | 379 | error = -EPERM; |
6e7f75ea | 380 | goto out; |
1da177e4 LT |
381 | } |
382 | ||
383 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
b474c7ae | 384 | error = -EFAULT; |
6e7f75ea | 385 | goto out; |
1da177e4 LT |
386 | } |
387 | ||
2451337d | 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)) | |
b474c7ae | 409 | return -EPERM; |
1da177e4 | 410 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) |
b474c7ae | 411 | return -EFAULT; |
071c529e DC |
412 | if (al_hreq.buflen < sizeof(struct attrlist) || |
413 | al_hreq.buflen > XATTR_LIST_MAX) | |
b474c7ae | 414 | return -EINVAL; |
1da177e4 | 415 | |
90ad58a8 CH |
416 | /* |
417 | * Reject flags, only allow namespaces. | |
418 | */ | |
419 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
b474c7ae | 420 | return -EINVAL; |
90ad58a8 | 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 | |
fdd3ccee DC |
426 | kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP); |
427 | if (!kbuf) | |
428 | goto out_dput; | |
1da177e4 LT |
429 | |
430 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
2451337d | 431 | error = xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, |
739bfb2a | 432 | al_hreq.flags, cursor); |
1da177e4 LT |
433 | if (error) |
434 | goto out_kfree; | |
435 | ||
436 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
437 | error = -EFAULT; | |
438 | ||
fdd3ccee DC |
439 | out_kfree: |
440 | kmem_free(kbuf); | |
441 | out_dput: | |
d296d30a CH |
442 | dput(dentry); |
443 | return error; | |
1da177e4 LT |
444 | } |
445 | ||
28750975 | 446 | int |
1da177e4 | 447 | xfs_attrmulti_attr_get( |
739bfb2a | 448 | struct inode *inode, |
a9273ca5 DC |
449 | unsigned char *name, |
450 | unsigned char __user *ubuf, | |
1da177e4 LT |
451 | __uint32_t *len, |
452 | __uint32_t flags) | |
453 | { | |
a9273ca5 | 454 | unsigned char *kbuf; |
2451337d | 455 | int error = -EFAULT; |
e8b0ebaa | 456 | |
1da177e4 | 457 | if (*len > XATTR_SIZE_MAX) |
2451337d | 458 | return -EINVAL; |
fdd3ccee DC |
459 | kbuf = kmem_zalloc_large(*len, KM_SLEEP); |
460 | if (!kbuf) | |
2451337d | 461 | return -ENOMEM; |
1da177e4 | 462 | |
e8b0ebaa | 463 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
464 | if (error) |
465 | goto out_kfree; | |
466 | ||
467 | if (copy_to_user(ubuf, kbuf, *len)) | |
2451337d | 468 | error = -EFAULT; |
1da177e4 | 469 | |
fdd3ccee DC |
470 | out_kfree: |
471 | kmem_free(kbuf); | |
1da177e4 LT |
472 | return error; |
473 | } | |
474 | ||
28750975 | 475 | int |
1da177e4 | 476 | xfs_attrmulti_attr_set( |
739bfb2a | 477 | struct inode *inode, |
a9273ca5 DC |
478 | unsigned char *name, |
479 | const unsigned char __user *ubuf, | |
1da177e4 LT |
480 | __uint32_t len, |
481 | __uint32_t flags) | |
482 | { | |
a9273ca5 | 483 | unsigned char *kbuf; |
1da177e4 | 484 | |
739bfb2a | 485 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
2451337d | 486 | return -EPERM; |
1da177e4 | 487 | if (len > XATTR_SIZE_MAX) |
2451337d | 488 | return -EINVAL; |
1da177e4 | 489 | |
0e639bde LZ |
490 | kbuf = memdup_user(ubuf, len); |
491 | if (IS_ERR(kbuf)) | |
492 | return PTR_ERR(kbuf); | |
e8b0ebaa | 493 | |
2451337d | 494 | return xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 LT |
495 | } |
496 | ||
28750975 | 497 | int |
1da177e4 | 498 | xfs_attrmulti_attr_remove( |
739bfb2a | 499 | struct inode *inode, |
a9273ca5 | 500 | unsigned char *name, |
1da177e4 LT |
501 | __uint32_t flags) |
502 | { | |
739bfb2a | 503 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
2451337d | 504 | return -EPERM; |
739bfb2a | 505 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
506 | } |
507 | ||
508 | STATIC int | |
509 | xfs_attrmulti_by_handle( | |
42a74f20 | 510 | struct file *parfilp, |
d296d30a | 511 | void __user *arg) |
1da177e4 LT |
512 | { |
513 | int error; | |
514 | xfs_attr_multiop_t *ops; | |
515 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 516 | struct dentry *dentry; |
1da177e4 | 517 | unsigned int i, size; |
a9273ca5 | 518 | unsigned char *attr_name; |
1da177e4 LT |
519 | |
520 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 521 | return -EPERM; |
1da177e4 | 522 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) |
b474c7ae | 523 | return -EFAULT; |
1da177e4 | 524 | |
fda168c2 ZW |
525 | /* overflow check */ |
526 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) | |
527 | return -E2BIG; | |
528 | ||
d296d30a CH |
529 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
530 | if (IS_ERR(dentry)) | |
531 | return PTR_ERR(dentry); | |
1da177e4 | 532 | |
2451337d | 533 | error = -E2BIG; |
e182f57a | 534 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 535 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 536 | goto out_dput; |
1da177e4 | 537 | |
0e639bde LZ |
538 | ops = memdup_user(am_hreq.ops, size); |
539 | if (IS_ERR(ops)) { | |
2451337d | 540 | error = PTR_ERR(ops); |
d296d30a | 541 | goto out_dput; |
0e639bde | 542 | } |
1da177e4 | 543 | |
2451337d | 544 | error = -ENOMEM; |
1da177e4 LT |
545 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); |
546 | if (!attr_name) | |
547 | goto out_kfree_ops; | |
548 | ||
1da177e4 LT |
549 | error = 0; |
550 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 551 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
552 | ops[i].am_attrname, MAXNAMELEN); |
553 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
2451337d | 554 | error = -ERANGE; |
1da177e4 LT |
555 | if (ops[i].am_error < 0) |
556 | break; | |
557 | ||
558 | switch (ops[i].am_opcode) { | |
559 | case ATTR_OP_GET: | |
d296d30a CH |
560 | ops[i].am_error = xfs_attrmulti_attr_get( |
561 | dentry->d_inode, attr_name, | |
562 | ops[i].am_attrvalue, &ops[i].am_length, | |
563 | ops[i].am_flags); | |
1da177e4 LT |
564 | break; |
565 | case ATTR_OP_SET: | |
a561be71 | 566 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
567 | if (ops[i].am_error) |
568 | break; | |
d296d30a CH |
569 | ops[i].am_error = xfs_attrmulti_attr_set( |
570 | dentry->d_inode, attr_name, | |
571 | ops[i].am_attrvalue, ops[i].am_length, | |
572 | ops[i].am_flags); | |
2a79f17e | 573 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
574 | break; |
575 | case ATTR_OP_REMOVE: | |
a561be71 | 576 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
577 | if (ops[i].am_error) |
578 | break; | |
d296d30a CH |
579 | ops[i].am_error = xfs_attrmulti_attr_remove( |
580 | dentry->d_inode, attr_name, | |
581 | ops[i].am_flags); | |
2a79f17e | 582 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
583 | break; |
584 | default: | |
2451337d | 585 | ops[i].am_error = -EINVAL; |
1da177e4 LT |
586 | } |
587 | } | |
588 | ||
589 | if (copy_to_user(am_hreq.ops, ops, size)) | |
2451337d | 590 | error = -EFAULT; |
1da177e4 LT |
591 | |
592 | kfree(attr_name); | |
593 | out_kfree_ops: | |
594 | kfree(ops); | |
d296d30a CH |
595 | out_dput: |
596 | dput(dentry); | |
2451337d | 597 | return error; |
1da177e4 LT |
598 | } |
599 | ||
d5547f9f | 600 | int |
1da177e4 | 601 | xfs_ioc_space( |
993386c1 | 602 | struct xfs_inode *ip, |
f37ea149 | 603 | struct inode *inode, |
1da177e4 LT |
604 | struct file *filp, |
605 | int ioflags, | |
606 | unsigned int cmd, | |
743bb465 | 607 | xfs_flock64_t *bf) |
1da177e4 | 608 | { |
865e9446 | 609 | struct iattr iattr; |
8add71ca | 610 | enum xfs_prealloc_flags flags = 0; |
1da177e4 LT |
611 | int error; |
612 | ||
743bb465 | 613 | /* |
614 | * Only allow the sys admin to reserve space unless | |
615 | * unwritten extents are enabled. | |
616 | */ | |
617 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
618 | !capable(CAP_SYS_ADMIN)) | |
b474c7ae | 619 | return -EPERM; |
743bb465 | 620 | |
f37ea149 | 621 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
b474c7ae | 622 | return -EPERM; |
1da177e4 | 623 | |
ad4a8ac4 | 624 | if (!(filp->f_mode & FMODE_WRITE)) |
b474c7ae | 625 | return -EBADF; |
1da177e4 | 626 | |
f37ea149 | 627 | if (!S_ISREG(inode->i_mode)) |
b474c7ae | 628 | return -EINVAL; |
1da177e4 | 629 | |
8add71ca CH |
630 | if (filp->f_flags & O_DSYNC) |
631 | flags |= XFS_PREALLOC_SYNC; | |
632 | if (ioflags & XFS_IO_INVIS) | |
633 | flags |= XFS_PREALLOC_INVISIBLE; | |
634 | ||
d9457dc0 JK |
635 | error = mnt_want_write_file(filp); |
636 | if (error) | |
637 | return error; | |
865e9446 | 638 | |
5f8aca8b | 639 | xfs_ilock(ip, XFS_IOLOCK_EXCL); |
865e9446 CH |
640 | |
641 | switch (bf->l_whence) { | |
642 | case 0: /*SEEK_SET*/ | |
643 | break; | |
644 | case 1: /*SEEK_CUR*/ | |
645 | bf->l_start += filp->f_pos; | |
646 | break; | |
647 | case 2: /*SEEK_END*/ | |
648 | bf->l_start += XFS_ISIZE(ip); | |
649 | break; | |
650 | default: | |
2451337d | 651 | error = -EINVAL; |
865e9446 CH |
652 | goto out_unlock; |
653 | } | |
654 | ||
655 | /* | |
656 | * length of <= 0 for resv/unresv/zero is invalid. length for | |
657 | * alloc/free is ignored completely and we have no idea what userspace | |
658 | * might have set it to, so set it to zero to allow range | |
659 | * checks to pass. | |
660 | */ | |
661 | switch (cmd) { | |
662 | case XFS_IOC_ZERO_RANGE: | |
663 | case XFS_IOC_RESVSP: | |
664 | case XFS_IOC_RESVSP64: | |
665 | case XFS_IOC_UNRESVSP: | |
666 | case XFS_IOC_UNRESVSP64: | |
667 | if (bf->l_len <= 0) { | |
2451337d | 668 | error = -EINVAL; |
865e9446 CH |
669 | goto out_unlock; |
670 | } | |
671 | break; | |
672 | default: | |
673 | bf->l_len = 0; | |
674 | break; | |
675 | } | |
676 | ||
677 | if (bf->l_start < 0 || | |
8add71ca | 678 | bf->l_start > inode->i_sb->s_maxbytes || |
865e9446 | 679 | bf->l_start + bf->l_len < 0 || |
8add71ca | 680 | bf->l_start + bf->l_len >= inode->i_sb->s_maxbytes) { |
2451337d | 681 | error = -EINVAL; |
865e9446 CH |
682 | goto out_unlock; |
683 | } | |
684 | ||
685 | switch (cmd) { | |
686 | case XFS_IOC_ZERO_RANGE: | |
8add71ca | 687 | flags |= XFS_PREALLOC_SET; |
865e9446 | 688 | error = xfs_zero_file_space(ip, bf->l_start, bf->l_len); |
865e9446 CH |
689 | break; |
690 | case XFS_IOC_RESVSP: | |
691 | case XFS_IOC_RESVSP64: | |
8add71ca | 692 | flags |= XFS_PREALLOC_SET; |
865e9446 CH |
693 | error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len, |
694 | XFS_BMAPI_PREALLOC); | |
865e9446 CH |
695 | break; |
696 | case XFS_IOC_UNRESVSP: | |
697 | case XFS_IOC_UNRESVSP64: | |
698 | error = xfs_free_file_space(ip, bf->l_start, bf->l_len); | |
699 | break; | |
700 | case XFS_IOC_ALLOCSP: | |
701 | case XFS_IOC_ALLOCSP64: | |
702 | case XFS_IOC_FREESP: | |
703 | case XFS_IOC_FREESP64: | |
8add71ca | 704 | flags |= XFS_PREALLOC_CLEAR; |
865e9446 CH |
705 | if (bf->l_start > XFS_ISIZE(ip)) { |
706 | error = xfs_alloc_file_space(ip, XFS_ISIZE(ip), | |
707 | bf->l_start - XFS_ISIZE(ip), 0); | |
708 | if (error) | |
709 | goto out_unlock; | |
710 | } | |
711 | ||
712 | iattr.ia_valid = ATTR_SIZE; | |
713 | iattr.ia_size = bf->l_start; | |
714 | ||
715 | error = xfs_setattr_size(ip, &iattr); | |
865e9446 CH |
716 | break; |
717 | default: | |
718 | ASSERT(0); | |
2451337d | 719 | error = -EINVAL; |
865e9446 CH |
720 | } |
721 | ||
722 | if (error) | |
723 | goto out_unlock; | |
724 | ||
8add71ca | 725 | error = xfs_update_prealloc_flags(ip, flags); |
865e9446 CH |
726 | |
727 | out_unlock: | |
5f8aca8b | 728 | xfs_iunlock(ip, XFS_IOLOCK_EXCL); |
d9457dc0 | 729 | mnt_drop_write_file(filp); |
2451337d | 730 | return error; |
1da177e4 LT |
731 | } |
732 | ||
733 | STATIC int | |
734 | xfs_ioc_bulkstat( | |
735 | xfs_mount_t *mp, | |
736 | unsigned int cmd, | |
737 | void __user *arg) | |
738 | { | |
739 | xfs_fsop_bulkreq_t bulkreq; | |
740 | int count; /* # of records returned */ | |
741 | xfs_ino_t inlast; /* last inode number */ | |
742 | int done; | |
743 | int error; | |
744 | ||
745 | /* done = 1 if there are more stats to get and if bulkstat */ | |
746 | /* should be called again (unused here, but used in dmapi) */ | |
747 | ||
748 | if (!capable(CAP_SYS_ADMIN)) | |
749 | return -EPERM; | |
750 | ||
751 | if (XFS_FORCED_SHUTDOWN(mp)) | |
b474c7ae | 752 | return -EIO; |
1da177e4 LT |
753 | |
754 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
b474c7ae | 755 | return -EFAULT; |
1da177e4 LT |
756 | |
757 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
b474c7ae | 758 | return -EFAULT; |
1da177e4 LT |
759 | |
760 | if ((count = bulkreq.icount) <= 0) | |
b474c7ae | 761 | return -EINVAL; |
1da177e4 | 762 | |
cd57e594 | 763 | if (bulkreq.ubuffer == NULL) |
b474c7ae | 764 | return -EINVAL; |
cd57e594 | 765 | |
1da177e4 LT |
766 | if (cmd == XFS_IOC_FSINUMBERS) |
767 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 768 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 | 769 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
d716f8ee CH |
770 | error = xfs_bulkstat_one(mp, inlast, bulkreq.ubuffer, |
771 | sizeof(xfs_bstat_t), NULL, &done); | |
cd57e594 | 772 | else /* XFS_IOC_FSBULKSTAT */ |
7dce11db CH |
773 | error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, |
774 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
775 | &done); | |
1da177e4 LT |
776 | |
777 | if (error) | |
2451337d | 778 | return error; |
1da177e4 LT |
779 | |
780 | if (bulkreq.ocount != NULL) { | |
781 | if (copy_to_user(bulkreq.lastip, &inlast, | |
782 | sizeof(xfs_ino_t))) | |
b474c7ae | 783 | return -EFAULT; |
1da177e4 LT |
784 | |
785 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
b474c7ae | 786 | return -EFAULT; |
1da177e4 LT |
787 | } |
788 | ||
789 | return 0; | |
790 | } | |
791 | ||
792 | STATIC int | |
793 | xfs_ioc_fsgeometry_v1( | |
794 | xfs_mount_t *mp, | |
795 | void __user *arg) | |
796 | { | |
eeb2036b | 797 | xfs_fsop_geom_t fsgeo; |
1da177e4 LT |
798 | int error; |
799 | ||
eeb2036b | 800 | error = xfs_fs_geometry(mp, &fsgeo, 3); |
1da177e4 | 801 | if (error) |
2451337d | 802 | return error; |
1da177e4 | 803 | |
eeb2036b AE |
804 | /* |
805 | * Caller should have passed an argument of type | |
806 | * xfs_fsop_geom_v1_t. This is a proper subset of the | |
807 | * xfs_fsop_geom_t that xfs_fs_geometry() fills in. | |
808 | */ | |
809 | if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t))) | |
b474c7ae | 810 | return -EFAULT; |
1da177e4 LT |
811 | return 0; |
812 | } | |
813 | ||
814 | STATIC int | |
815 | xfs_ioc_fsgeometry( | |
816 | xfs_mount_t *mp, | |
817 | void __user *arg) | |
818 | { | |
819 | xfs_fsop_geom_t fsgeo; | |
820 | int error; | |
821 | ||
822 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
823 | if (error) | |
2451337d | 824 | return error; |
1da177e4 LT |
825 | |
826 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
b474c7ae | 827 | return -EFAULT; |
1da177e4 LT |
828 | return 0; |
829 | } | |
830 | ||
831 | /* | |
832 | * Linux extended inode flags interface. | |
833 | */ | |
1da177e4 LT |
834 | |
835 | STATIC unsigned int | |
836 | xfs_merge_ioc_xflags( | |
837 | unsigned int flags, | |
838 | unsigned int start) | |
839 | { | |
840 | unsigned int xflags = start; | |
841 | ||
39058a0e | 842 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
843 | xflags |= XFS_XFLAG_IMMUTABLE; |
844 | else | |
845 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 846 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
847 | xflags |= XFS_XFLAG_APPEND; |
848 | else | |
849 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 850 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
851 | xflags |= XFS_XFLAG_SYNC; |
852 | else | |
853 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 854 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
855 | xflags |= XFS_XFLAG_NOATIME; |
856 | else | |
857 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 858 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
859 | xflags |= XFS_XFLAG_NODUMP; |
860 | else | |
861 | xflags &= ~XFS_XFLAG_NODUMP; | |
862 | ||
863 | return xflags; | |
864 | } | |
865 | ||
866 | STATIC unsigned int | |
867 | xfs_di2lxflags( | |
868 | __uint16_t di_flags) | |
869 | { | |
870 | unsigned int flags = 0; | |
871 | ||
872 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 873 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 874 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 875 | flags |= FS_APPEND_FL; |
1da177e4 | 876 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 877 | flags |= FS_SYNC_FL; |
1da177e4 | 878 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 879 | flags |= FS_NOATIME_FL; |
1da177e4 | 880 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 881 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
882 | return flags; |
883 | } | |
884 | ||
c83bfab1 CH |
885 | STATIC int |
886 | xfs_ioc_fsgetxattr( | |
887 | xfs_inode_t *ip, | |
888 | int attr, | |
889 | void __user *arg) | |
890 | { | |
891 | struct fsxattr fa; | |
892 | ||
a122eb2f DR |
893 | memset(&fa, 0, sizeof(struct fsxattr)); |
894 | ||
c83bfab1 CH |
895 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
896 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
897 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
6743099c | 898 | fa.fsx_projid = xfs_get_projid(ip); |
c83bfab1 CH |
899 | |
900 | if (attr) { | |
901 | if (ip->i_afp) { | |
902 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
903 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
904 | sizeof(xfs_bmbt_rec_t); | |
905 | else | |
906 | fa.fsx_nextents = ip->i_d.di_anextents; | |
907 | } else | |
908 | fa.fsx_nextents = 0; | |
909 | } else { | |
910 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
911 | fa.fsx_nextents = ip->i_df.if_bytes / | |
912 | sizeof(xfs_bmbt_rec_t); | |
913 | else | |
914 | fa.fsx_nextents = ip->i_d.di_nextents; | |
915 | } | |
916 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
917 | ||
918 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
919 | return -EFAULT; | |
920 | return 0; | |
921 | } | |
922 | ||
25fe55e8 CH |
923 | STATIC void |
924 | xfs_set_diflags( | |
925 | struct xfs_inode *ip, | |
926 | unsigned int xflags) | |
927 | { | |
928 | unsigned int di_flags; | |
929 | ||
930 | /* can't set PREALLOC this way, just preserve it */ | |
931 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
932 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
933 | di_flags |= XFS_DIFLAG_IMMUTABLE; | |
934 | if (xflags & XFS_XFLAG_APPEND) | |
935 | di_flags |= XFS_DIFLAG_APPEND; | |
936 | if (xflags & XFS_XFLAG_SYNC) | |
937 | di_flags |= XFS_DIFLAG_SYNC; | |
938 | if (xflags & XFS_XFLAG_NOATIME) | |
939 | di_flags |= XFS_DIFLAG_NOATIME; | |
940 | if (xflags & XFS_XFLAG_NODUMP) | |
941 | di_flags |= XFS_DIFLAG_NODUMP; | |
25fe55e8 CH |
942 | if (xflags & XFS_XFLAG_NODEFRAG) |
943 | di_flags |= XFS_DIFLAG_NODEFRAG; | |
944 | if (xflags & XFS_XFLAG_FILESTREAM) | |
945 | di_flags |= XFS_DIFLAG_FILESTREAM; | |
abbede1b | 946 | if (S_ISDIR(ip->i_d.di_mode)) { |
25fe55e8 CH |
947 | if (xflags & XFS_XFLAG_RTINHERIT) |
948 | di_flags |= XFS_DIFLAG_RTINHERIT; | |
949 | if (xflags & XFS_XFLAG_NOSYMLINKS) | |
950 | di_flags |= XFS_DIFLAG_NOSYMLINKS; | |
951 | if (xflags & XFS_XFLAG_EXTSZINHERIT) | |
952 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; | |
9336e3a7 DC |
953 | if (xflags & XFS_XFLAG_PROJINHERIT) |
954 | di_flags |= XFS_DIFLAG_PROJINHERIT; | |
abbede1b | 955 | } else if (S_ISREG(ip->i_d.di_mode)) { |
25fe55e8 CH |
956 | if (xflags & XFS_XFLAG_REALTIME) |
957 | di_flags |= XFS_DIFLAG_REALTIME; | |
958 | if (xflags & XFS_XFLAG_EXTSIZE) | |
959 | di_flags |= XFS_DIFLAG_EXTSIZE; | |
960 | } | |
961 | ||
962 | ip->i_d.di_flags = di_flags; | |
963 | } | |
964 | ||
f13fae2d CH |
965 | STATIC void |
966 | xfs_diflags_to_linux( | |
967 | struct xfs_inode *ip) | |
968 | { | |
e4f75291 | 969 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
970 | unsigned int xflags = xfs_ip2xflags(ip); |
971 | ||
972 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
973 | inode->i_flags |= S_IMMUTABLE; | |
974 | else | |
975 | inode->i_flags &= ~S_IMMUTABLE; | |
976 | if (xflags & XFS_XFLAG_APPEND) | |
977 | inode->i_flags |= S_APPEND; | |
978 | else | |
979 | inode->i_flags &= ~S_APPEND; | |
980 | if (xflags & XFS_XFLAG_SYNC) | |
981 | inode->i_flags |= S_SYNC; | |
982 | else | |
983 | inode->i_flags &= ~S_SYNC; | |
984 | if (xflags & XFS_XFLAG_NOATIME) | |
985 | inode->i_flags |= S_NOATIME; | |
986 | else | |
987 | inode->i_flags &= ~S_NOATIME; | |
988 | } | |
25fe55e8 | 989 | |
29a17c00 DC |
990 | static int |
991 | xfs_ioctl_setattr_xflags( | |
992 | struct xfs_trans *tp, | |
993 | struct xfs_inode *ip, | |
994 | struct fsxattr *fa) | |
995 | { | |
996 | struct xfs_mount *mp = ip->i_mount; | |
997 | ||
998 | /* Can't change realtime flag if any extents are allocated. */ | |
999 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
1000 | XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & XFS_XFLAG_REALTIME)) | |
1001 | return -EINVAL; | |
1002 | ||
1003 | /* If realtime flag is set then must have realtime device */ | |
1004 | if (fa->fsx_xflags & XFS_XFLAG_REALTIME) { | |
1005 | if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 || | |
1006 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) | |
1007 | return -EINVAL; | |
1008 | } | |
1009 | ||
1010 | /* | |
1011 | * Can't modify an immutable/append-only file unless | |
1012 | * we have appropriate permission. | |
1013 | */ | |
1014 | if (((ip->i_d.di_flags & (XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND)) || | |
1015 | (fa->fsx_xflags & (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && | |
1016 | !capable(CAP_LINUX_IMMUTABLE)) | |
1017 | return -EPERM; | |
1018 | ||
29a17c00 DC |
1019 | xfs_set_diflags(ip, fa->fsx_xflags); |
1020 | xfs_diflags_to_linux(ip); | |
1021 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); | |
1022 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
1023 | XFS_STATS_INC(xs_ig_attrchg); | |
1024 | return 0; | |
1025 | } | |
1026 | ||
8f3d17ab DC |
1027 | /* |
1028 | * Set up the transaction structure for the setattr operation, checking that we | |
1029 | * have permission to do so. On success, return a clean transaction and the | |
1030 | * inode locked exclusively ready for further operation specific checks. On | |
1031 | * failure, return an error without modifying or locking the inode. | |
1032 | */ | |
1033 | static struct xfs_trans * | |
1034 | xfs_ioctl_setattr_get_trans( | |
1035 | struct xfs_inode *ip) | |
1036 | { | |
1037 | struct xfs_mount *mp = ip->i_mount; | |
1038 | struct xfs_trans *tp; | |
1039 | int error; | |
1040 | ||
1041 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
1042 | return ERR_PTR(-EROFS); | |
1043 | if (XFS_FORCED_SHUTDOWN(mp)) | |
1044 | return ERR_PTR(-EIO); | |
1045 | ||
1046 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
1047 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); | |
1048 | if (error) | |
1049 | goto out_cancel; | |
1050 | ||
1051 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
1052 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
1053 | ||
1054 | /* | |
1055 | * CAP_FOWNER overrides the following restrictions: | |
1056 | * | |
1057 | * The user ID of the calling process must be equal to the file owner | |
1058 | * ID, except in cases where the CAP_FSETID capability is applicable. | |
1059 | */ | |
1060 | if (!inode_owner_or_capable(VFS_I(ip))) { | |
1061 | error = -EPERM; | |
1062 | goto out_cancel; | |
1063 | } | |
1064 | ||
1065 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1066 | xfs_trans_set_sync(tp); | |
1067 | ||
1068 | return tp; | |
1069 | ||
1070 | out_cancel: | |
1071 | xfs_trans_cancel(tp, 0); | |
1072 | return ERR_PTR(error); | |
1073 | } | |
1074 | ||
9b94fcc3 IP |
1075 | /* |
1076 | * extent size hint validation is somewhat cumbersome. Rules are: | |
1077 | * | |
1078 | * 1. extent size hint is only valid for directories and regular files | |
1079 | * 2. XFS_XFLAG_EXTSIZE is only valid for regular files | |
1080 | * 3. XFS_XFLAG_EXTSZINHERIT is only valid for directories. | |
1081 | * 4. can only be changed on regular files if no extents are allocated | |
1082 | * 5. can be changed on directories at any time | |
1083 | * 6. extsize hint of 0 turns off hints, clears inode flags. | |
1084 | * 7. Extent size must be a multiple of the appropriate block size. | |
1085 | * 8. for non-realtime files, the extent size hint must be limited | |
1086 | * to half the AG size to avoid alignment extending the extent beyond the | |
1087 | * limits of the AG. | |
1088 | */ | |
f92090e9 | 1089 | static int |
d4388d3c DC |
1090 | xfs_ioctl_setattr_check_extsize( |
1091 | struct xfs_inode *ip, | |
1092 | struct fsxattr *fa) | |
1093 | { | |
1094 | struct xfs_mount *mp = ip->i_mount; | |
1095 | ||
9b94fcc3 IP |
1096 | if ((fa->fsx_xflags & XFS_XFLAG_EXTSIZE) && !S_ISREG(ip->i_d.di_mode)) |
1097 | return -EINVAL; | |
1098 | ||
1099 | if ((fa->fsx_xflags & XFS_XFLAG_EXTSZINHERIT) && | |
1100 | !S_ISDIR(ip->i_d.di_mode)) | |
1101 | return -EINVAL; | |
1102 | ||
1103 | if (S_ISREG(ip->i_d.di_mode) && ip->i_d.di_nextents && | |
d4388d3c DC |
1104 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize)) |
1105 | return -EINVAL; | |
1106 | ||
d4388d3c DC |
1107 | if (fa->fsx_extsize != 0) { |
1108 | xfs_extlen_t size; | |
1109 | xfs_fsblock_t extsize_fsb; | |
1110 | ||
1111 | extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); | |
1112 | if (extsize_fsb > MAXEXTLEN) | |
1113 | return -EINVAL; | |
1114 | ||
1115 | if (XFS_IS_REALTIME_INODE(ip) || | |
1116 | (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1117 | size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog; | |
1118 | } else { | |
1119 | size = mp->m_sb.sb_blocksize; | |
1120 | if (extsize_fsb > mp->m_sb.sb_agblocks / 2) | |
1121 | return -EINVAL; | |
1122 | } | |
1123 | ||
1124 | if (fa->fsx_extsize % size) | |
1125 | return -EINVAL; | |
9b94fcc3 IP |
1126 | } else |
1127 | fa->fsx_xflags &= ~(XFS_XFLAG_EXTSIZE | XFS_XFLAG_EXTSZINHERIT); | |
1128 | ||
d4388d3c DC |
1129 | return 0; |
1130 | } | |
1131 | ||
f92090e9 | 1132 | static int |
23bd0735 DC |
1133 | xfs_ioctl_setattr_check_projid( |
1134 | struct xfs_inode *ip, | |
1135 | struct fsxattr *fa) | |
1136 | { | |
1137 | /* Disallow 32bit project ids if projid32bit feature is not enabled. */ | |
1138 | if (fa->fsx_projid > (__uint16_t)-1 && | |
1139 | !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) | |
1140 | return -EINVAL; | |
1141 | ||
1142 | /* | |
1143 | * Project Quota ID state is only allowed to change from within the init | |
1144 | * namespace. Enforce that restriction only if we are trying to change | |
1145 | * the quota ID state. Everything else is allowed in user namespaces. | |
1146 | */ | |
1147 | if (current_user_ns() == &init_user_ns) | |
1148 | return 0; | |
1149 | ||
1150 | if (xfs_get_projid(ip) != fa->fsx_projid) | |
1151 | return -EINVAL; | |
1152 | if ((fa->fsx_xflags & XFS_XFLAG_PROJINHERIT) != | |
1153 | (ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT)) | |
1154 | return -EINVAL; | |
1155 | ||
1156 | return 0; | |
1157 | } | |
25fe55e8 CH |
1158 | |
1159 | STATIC int | |
1160 | xfs_ioctl_setattr( | |
1161 | xfs_inode_t *ip, | |
fd179b9c | 1162 | struct fsxattr *fa) |
25fe55e8 CH |
1163 | { |
1164 | struct xfs_mount *mp = ip->i_mount; | |
1165 | struct xfs_trans *tp; | |
7d095257 | 1166 | struct xfs_dquot *udqp = NULL; |
92f8ff73 | 1167 | struct xfs_dquot *pdqp = NULL; |
25fe55e8 CH |
1168 | struct xfs_dquot *olddquot = NULL; |
1169 | int code; | |
1170 | ||
cca28fb8 | 1171 | trace_xfs_ioctl_setattr(ip); |
25fe55e8 | 1172 | |
23bd0735 DC |
1173 | code = xfs_ioctl_setattr_check_projid(ip, fa); |
1174 | if (code) | |
1175 | return code; | |
23963e54 | 1176 | |
25fe55e8 CH |
1177 | /* |
1178 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
1179 | * before we start any other transactions. Trying to do this later | |
1180 | * is messy. We don't care to take a readlock to look at the ids | |
1181 | * in inode here, because we can't hold it across the trans_reserve. | |
1182 | * If the IDs do change before we take the ilock, we're covered | |
1183 | * because the i_*dquot fields will get updated anyway. | |
1184 | */ | |
fd179b9c | 1185 | if (XFS_IS_QUOTA_ON(mp)) { |
7d095257 | 1186 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
25fe55e8 | 1187 | ip->i_d.di_gid, fa->fsx_projid, |
92f8ff73 | 1188 | XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp); |
25fe55e8 CH |
1189 | if (code) |
1190 | return code; | |
1191 | } | |
1192 | ||
8f3d17ab DC |
1193 | tp = xfs_ioctl_setattr_get_trans(ip); |
1194 | if (IS_ERR(tp)) { | |
1195 | code = PTR_ERR(tp); | |
1196 | goto error_free_dquots; | |
25fe55e8 CH |
1197 | } |
1198 | ||
25fe55e8 | 1199 | |
fd179b9c DC |
1200 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) && |
1201 | xfs_get_projid(ip) != fa->fsx_projid) { | |
1202 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, pdqp, | |
1203 | capable(CAP_FOWNER) ? XFS_QMOPT_FORCE_RES : 0); | |
1204 | if (code) /* out of quota */ | |
d4388d3c | 1205 | goto error_trans_cancel; |
25fe55e8 CH |
1206 | } |
1207 | ||
d4388d3c DC |
1208 | code = xfs_ioctl_setattr_check_extsize(ip, fa); |
1209 | if (code) | |
1210 | goto error_trans_cancel; | |
25fe55e8 | 1211 | |
29a17c00 DC |
1212 | code = xfs_ioctl_setattr_xflags(tp, ip, fa); |
1213 | if (code) | |
d4388d3c | 1214 | goto error_trans_cancel; |
25fe55e8 CH |
1215 | |
1216 | /* | |
fd179b9c DC |
1217 | * Change file ownership. Must be the owner or privileged. CAP_FSETID |
1218 | * overrides the following restrictions: | |
1219 | * | |
1220 | * The set-user-ID and set-group-ID bits of a file will be cleared upon | |
1221 | * successful return from chown() | |
25fe55e8 | 1222 | */ |
25fe55e8 | 1223 | |
fd179b9c DC |
1224 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && |
1225 | !capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID)) | |
1226 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
25fe55e8 | 1227 | |
fd179b9c DC |
1228 | /* Change the ownerships and register project quota modifications */ |
1229 | if (xfs_get_projid(ip) != fa->fsx_projid) { | |
1230 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { | |
1231 | olddquot = xfs_qm_vop_chown(tp, ip, | |
1232 | &ip->i_pdquot, pdqp); | |
1233 | } | |
1234 | ASSERT(ip->i_d.di_version > 1); | |
1235 | xfs_set_projid(ip, fa->fsx_projid); | |
f13fae2d | 1236 | } |
25fe55e8 | 1237 | |
a872703f DC |
1238 | /* |
1239 | * Only set the extent size hint if we've already determined that the | |
1240 | * extent size hint should be set on the inode. If no extent size flags | |
1241 | * are set on the inode then unconditionally clear the extent size hint. | |
1242 | */ | |
fd179b9c DC |
1243 | if (ip->i_d.di_flags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT)) |
1244 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
1245 | else | |
1246 | ip->i_d.di_extsize = 0; | |
25fe55e8 | 1247 | |
25fe55e8 | 1248 | code = xfs_trans_commit(tp, 0); |
25fe55e8 CH |
1249 | |
1250 | /* | |
1251 | * Release any dquot(s) the inode had kept before chown. | |
1252 | */ | |
7d095257 CH |
1253 | xfs_qm_dqrele(olddquot); |
1254 | xfs_qm_dqrele(udqp); | |
92f8ff73 | 1255 | xfs_qm_dqrele(pdqp); |
25fe55e8 | 1256 | |
288699fe | 1257 | return code; |
25fe55e8 | 1258 | |
d4388d3c | 1259 | error_trans_cancel: |
8f3d17ab DC |
1260 | xfs_trans_cancel(tp, 0); |
1261 | error_free_dquots: | |
7d095257 | 1262 | xfs_qm_dqrele(udqp); |
92f8ff73 | 1263 | xfs_qm_dqrele(pdqp); |
25fe55e8 CH |
1264 | return code; |
1265 | } | |
1266 | ||
1da177e4 | 1267 | STATIC int |
df26cfe8 | 1268 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1269 | xfs_inode_t *ip, |
1270 | struct file *filp, | |
1da177e4 LT |
1271 | void __user *arg) |
1272 | { | |
1273 | struct fsxattr fa; | |
d9457dc0 | 1274 | int error; |
df26cfe8 LM |
1275 | |
1276 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1277 | return -EFAULT; | |
1da177e4 | 1278 | |
d9457dc0 JK |
1279 | error = mnt_want_write_file(filp); |
1280 | if (error) | |
1281 | return error; | |
fd179b9c | 1282 | error = xfs_ioctl_setattr(ip, &fa); |
d9457dc0 | 1283 | mnt_drop_write_file(filp); |
2451337d | 1284 | return error; |
df26cfe8 | 1285 | } |
1da177e4 | 1286 | |
df26cfe8 LM |
1287 | STATIC int |
1288 | xfs_ioc_getxflags( | |
1289 | xfs_inode_t *ip, | |
1290 | void __user *arg) | |
1291 | { | |
1292 | unsigned int flags; | |
1da177e4 | 1293 | |
df26cfe8 LM |
1294 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1295 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1296 | return -EFAULT; | |
1297 | return 0; | |
1298 | } | |
1da177e4 | 1299 | |
df26cfe8 LM |
1300 | STATIC int |
1301 | xfs_ioc_setxflags( | |
f96291f6 | 1302 | struct xfs_inode *ip, |
df26cfe8 LM |
1303 | struct file *filp, |
1304 | void __user *arg) | |
1305 | { | |
f96291f6 | 1306 | struct xfs_trans *tp; |
25fe55e8 | 1307 | struct fsxattr fa; |
df26cfe8 | 1308 | unsigned int flags; |
f96291f6 | 1309 | int error; |
1da177e4 | 1310 | |
df26cfe8 LM |
1311 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1312 | return -EFAULT; | |
1da177e4 | 1313 | |
df26cfe8 LM |
1314 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1315 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1316 | FS_SYNC_FL)) | |
1317 | return -EOPNOTSUPP; | |
1da177e4 | 1318 | |
25fe55e8 | 1319 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); |
1da177e4 | 1320 | |
d9457dc0 JK |
1321 | error = mnt_want_write_file(filp); |
1322 | if (error) | |
1323 | return error; | |
f96291f6 DC |
1324 | |
1325 | tp = xfs_ioctl_setattr_get_trans(ip); | |
1326 | if (IS_ERR(tp)) { | |
1327 | error = PTR_ERR(tp); | |
1328 | goto out_drop_write; | |
1329 | } | |
1330 | ||
1331 | error = xfs_ioctl_setattr_xflags(tp, ip, &fa); | |
1332 | if (error) { | |
1333 | xfs_trans_cancel(tp, 0); | |
1334 | goto out_drop_write; | |
1335 | } | |
1336 | ||
1337 | error = xfs_trans_commit(tp, 0); | |
1338 | out_drop_write: | |
d9457dc0 | 1339 | mnt_drop_write_file(filp); |
2451337d | 1340 | return error; |
1da177e4 LT |
1341 | } |
1342 | ||
8a7141a8 ES |
1343 | STATIC int |
1344 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) | |
1345 | { | |
b972d079 | 1346 | struct getbmap __user *base = (struct getbmap __user *)*ap; |
8a7141a8 ES |
1347 | |
1348 | /* copy only getbmap portion (not getbmapx) */ | |
1349 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
2451337d | 1350 | return -EFAULT; |
8a7141a8 ES |
1351 | |
1352 | *ap += sizeof(struct getbmap); | |
1353 | return 0; | |
1354 | } | |
1355 | ||
1da177e4 LT |
1356 | STATIC int |
1357 | xfs_ioc_getbmap( | |
993386c1 | 1358 | struct xfs_inode *ip, |
1da177e4 LT |
1359 | int ioflags, |
1360 | unsigned int cmd, | |
1361 | void __user *arg) | |
1362 | { | |
8a7141a8 | 1363 | struct getbmapx bmx; |
1da177e4 LT |
1364 | int error; |
1365 | ||
8a7141a8 | 1366 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
b474c7ae | 1367 | return -EFAULT; |
1da177e4 | 1368 | |
8a7141a8 | 1369 | if (bmx.bmv_count < 2) |
b474c7ae | 1370 | return -EINVAL; |
1da177e4 | 1371 | |
8a7141a8 | 1372 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
b92cc59f | 1373 | if (ioflags & XFS_IO_INVIS) |
8a7141a8 | 1374 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1375 | |
8a7141a8 | 1376 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
b972d079 | 1377 | (__force struct getbmap *)arg+1); |
1da177e4 | 1378 | if (error) |
2451337d | 1379 | return error; |
1da177e4 | 1380 | |
8a7141a8 ES |
1381 | /* copy back header - only size of getbmap */ |
1382 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
b474c7ae | 1383 | return -EFAULT; |
1da177e4 LT |
1384 | return 0; |
1385 | } | |
1386 | ||
8a7141a8 ES |
1387 | STATIC int |
1388 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) | |
1389 | { | |
b972d079 | 1390 | struct getbmapx __user *base = (struct getbmapx __user *)*ap; |
8a7141a8 ES |
1391 | |
1392 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
2451337d | 1393 | return -EFAULT; |
8a7141a8 ES |
1394 | |
1395 | *ap += sizeof(struct getbmapx); | |
1396 | return 0; | |
1397 | } | |
1398 | ||
1da177e4 LT |
1399 | STATIC int |
1400 | xfs_ioc_getbmapx( | |
993386c1 | 1401 | struct xfs_inode *ip, |
1da177e4 LT |
1402 | void __user *arg) |
1403 | { | |
1404 | struct getbmapx bmx; | |
1da177e4 LT |
1405 | int error; |
1406 | ||
1407 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
b474c7ae | 1408 | return -EFAULT; |
1da177e4 LT |
1409 | |
1410 | if (bmx.bmv_count < 2) | |
b474c7ae | 1411 | return -EINVAL; |
1da177e4 | 1412 | |
8a7141a8 | 1413 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
b474c7ae | 1414 | return -EINVAL; |
1da177e4 | 1415 | |
8a7141a8 | 1416 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
b972d079 | 1417 | (__force struct getbmapx *)arg+1); |
1da177e4 | 1418 | if (error) |
2451337d | 1419 | return error; |
1da177e4 | 1420 | |
8a7141a8 ES |
1421 | /* copy back header */ |
1422 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
b474c7ae | 1423 | return -EFAULT; |
1da177e4 LT |
1424 | |
1425 | return 0; | |
1426 | } | |
df26cfe8 | 1427 | |
a133d952 DC |
1428 | int |
1429 | xfs_ioc_swapext( | |
1430 | xfs_swapext_t *sxp) | |
1431 | { | |
1432 | xfs_inode_t *ip, *tip; | |
1433 | struct fd f, tmp; | |
1434 | int error = 0; | |
1435 | ||
1436 | /* Pull information for the target fd */ | |
1437 | f = fdget((int)sxp->sx_fdtarget); | |
1438 | if (!f.file) { | |
2451337d | 1439 | error = -EINVAL; |
a133d952 DC |
1440 | goto out; |
1441 | } | |
1442 | ||
1443 | if (!(f.file->f_mode & FMODE_WRITE) || | |
1444 | !(f.file->f_mode & FMODE_READ) || | |
1445 | (f.file->f_flags & O_APPEND)) { | |
2451337d | 1446 | error = -EBADF; |
a133d952 DC |
1447 | goto out_put_file; |
1448 | } | |
1449 | ||
1450 | tmp = fdget((int)sxp->sx_fdtmp); | |
1451 | if (!tmp.file) { | |
2451337d | 1452 | error = -EINVAL; |
a133d952 DC |
1453 | goto out_put_file; |
1454 | } | |
1455 | ||
1456 | if (!(tmp.file->f_mode & FMODE_WRITE) || | |
1457 | !(tmp.file->f_mode & FMODE_READ) || | |
1458 | (tmp.file->f_flags & O_APPEND)) { | |
2451337d | 1459 | error = -EBADF; |
a133d952 DC |
1460 | goto out_put_tmp_file; |
1461 | } | |
1462 | ||
1463 | if (IS_SWAPFILE(file_inode(f.file)) || | |
1464 | IS_SWAPFILE(file_inode(tmp.file))) { | |
2451337d | 1465 | error = -EINVAL; |
a133d952 DC |
1466 | goto out_put_tmp_file; |
1467 | } | |
1468 | ||
1469 | ip = XFS_I(file_inode(f.file)); | |
1470 | tip = XFS_I(file_inode(tmp.file)); | |
1471 | ||
1472 | if (ip->i_mount != tip->i_mount) { | |
2451337d | 1473 | error = -EINVAL; |
a133d952 DC |
1474 | goto out_put_tmp_file; |
1475 | } | |
1476 | ||
1477 | if (ip->i_ino == tip->i_ino) { | |
2451337d | 1478 | error = -EINVAL; |
a133d952 DC |
1479 | goto out_put_tmp_file; |
1480 | } | |
1481 | ||
1482 | if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { | |
2451337d | 1483 | error = -EIO; |
a133d952 DC |
1484 | goto out_put_tmp_file; |
1485 | } | |
1486 | ||
1487 | error = xfs_swap_extents(ip, tip, sxp); | |
1488 | ||
1489 | out_put_tmp_file: | |
1490 | fdput(tmp); | |
1491 | out_put_file: | |
1492 | fdput(f); | |
1493 | out: | |
1494 | return error; | |
1495 | } | |
1496 | ||
4d4be482 CH |
1497 | /* |
1498 | * Note: some of the ioctl's return positive numbers as a | |
1499 | * byte count indicating success, such as readlink_by_handle. | |
1500 | * So we don't "sign flip" like most other routines. This means | |
1501 | * true errors need to be returned as a negative value. | |
1502 | */ | |
1503 | long | |
1504 | xfs_file_ioctl( | |
df26cfe8 | 1505 | struct file *filp, |
df26cfe8 | 1506 | unsigned int cmd, |
4d4be482 | 1507 | unsigned long p) |
df26cfe8 | 1508 | { |
496ad9aa | 1509 | struct inode *inode = file_inode(filp); |
4d4be482 CH |
1510 | struct xfs_inode *ip = XFS_I(inode); |
1511 | struct xfs_mount *mp = ip->i_mount; | |
1512 | void __user *arg = (void __user *)p; | |
1513 | int ioflags = 0; | |
df26cfe8 LM |
1514 | int error; |
1515 | ||
4d4be482 | 1516 | if (filp->f_mode & FMODE_NOCMTIME) |
b92cc59f | 1517 | ioflags |= XFS_IO_INVIS; |
df26cfe8 | 1518 | |
cca28fb8 | 1519 | trace_xfs_file_ioctl(ip); |
4d4be482 CH |
1520 | |
1521 | switch (cmd) { | |
a46db608 CH |
1522 | case FITRIM: |
1523 | return xfs_ioc_trim(mp, arg); | |
df26cfe8 LM |
1524 | case XFS_IOC_ALLOCSP: |
1525 | case XFS_IOC_FREESP: | |
1526 | case XFS_IOC_RESVSP: | |
1527 | case XFS_IOC_UNRESVSP: | |
1528 | case XFS_IOC_ALLOCSP64: | |
1529 | case XFS_IOC_FREESP64: | |
1530 | case XFS_IOC_RESVSP64: | |
44722352 DC |
1531 | case XFS_IOC_UNRESVSP64: |
1532 | case XFS_IOC_ZERO_RANGE: { | |
743bb465 | 1533 | xfs_flock64_t bf; |
df26cfe8 | 1534 | |
743bb465 | 1535 | if (copy_from_user(&bf, arg, sizeof(bf))) |
b474c7ae | 1536 | return -EFAULT; |
743bb465 | 1537 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); |
1538 | } | |
df26cfe8 LM |
1539 | case XFS_IOC_DIOINFO: { |
1540 | struct dioattr da; | |
1541 | xfs_buftarg_t *target = | |
1542 | XFS_IS_REALTIME_INODE(ip) ? | |
1543 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1544 | ||
7c71ee78 | 1545 | da.d_mem = da.d_miniosz = target->bt_logical_sectorsize; |
df26cfe8 LM |
1546 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); |
1547 | ||
1548 | if (copy_to_user(arg, &da, sizeof(da))) | |
b474c7ae | 1549 | return -EFAULT; |
df26cfe8 LM |
1550 | return 0; |
1551 | } | |
1552 | ||
1553 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1554 | case XFS_IOC_FSBULKSTAT: | |
1555 | case XFS_IOC_FSINUMBERS: | |
1556 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1557 | ||
1558 | case XFS_IOC_FSGEOMETRY_V1: | |
1559 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1560 | ||
1561 | case XFS_IOC_FSGEOMETRY: | |
1562 | return xfs_ioc_fsgeometry(mp, arg); | |
1563 | ||
1564 | case XFS_IOC_GETVERSION: | |
1565 | return put_user(inode->i_generation, (int __user *)arg); | |
1566 | ||
1567 | case XFS_IOC_FSGETXATTR: | |
1568 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1569 | case XFS_IOC_FSGETXATTRA: | |
1570 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1571 | case XFS_IOC_FSSETXATTR: |
1572 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1573 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1574 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1575 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1576 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1577 | |
1578 | case XFS_IOC_FSSETDM: { | |
1579 | struct fsdmidata dmi; | |
1580 | ||
1581 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
b474c7ae | 1582 | return -EFAULT; |
df26cfe8 | 1583 | |
d9457dc0 JK |
1584 | error = mnt_want_write_file(filp); |
1585 | if (error) | |
1586 | return error; | |
1587 | ||
df26cfe8 LM |
1588 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, |
1589 | dmi.fsd_dmstate); | |
d9457dc0 | 1590 | mnt_drop_write_file(filp); |
2451337d | 1591 | return error; |
df26cfe8 LM |
1592 | } |
1593 | ||
1594 | case XFS_IOC_GETBMAP: | |
1595 | case XFS_IOC_GETBMAPA: | |
1596 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1597 | ||
1598 | case XFS_IOC_GETBMAPX: | |
1599 | return xfs_ioc_getbmapx(ip, arg); | |
1600 | ||
1601 | case XFS_IOC_FD_TO_HANDLE: | |
1602 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1603 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1604 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1605 | |
743bb465 | 1606 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
b474c7ae | 1607 | return -EFAULT; |
743bb465 | 1608 | return xfs_find_handle(cmd, &hreq); |
1609 | } | |
1610 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1611 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1612 | |
743bb465 | 1613 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 1614 | return -EFAULT; |
d296d30a | 1615 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1616 | } |
df26cfe8 | 1617 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1618 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1619 | |
743bb465 | 1620 | case XFS_IOC_READLINK_BY_HANDLE: { |
1621 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1622 | |
743bb465 | 1623 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 1624 | return -EFAULT; |
d296d30a | 1625 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1626 | } |
df26cfe8 | 1627 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1628 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1629 | |
1630 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1631 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1632 | |
1633 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1634 | struct xfs_swapext sxp; |
1635 | ||
1636 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
b474c7ae | 1637 | return -EFAULT; |
d9457dc0 JK |
1638 | error = mnt_want_write_file(filp); |
1639 | if (error) | |
1640 | return error; | |
a133d952 | 1641 | error = xfs_ioc_swapext(&sxp); |
d9457dc0 | 1642 | mnt_drop_write_file(filp); |
2451337d | 1643 | return error; |
df26cfe8 LM |
1644 | } |
1645 | ||
1646 | case XFS_IOC_FSCOUNTS: { | |
1647 | xfs_fsop_counts_t out; | |
1648 | ||
1649 | error = xfs_fs_counts(mp, &out); | |
1650 | if (error) | |
2451337d | 1651 | return error; |
df26cfe8 LM |
1652 | |
1653 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 1654 | return -EFAULT; |
df26cfe8 LM |
1655 | return 0; |
1656 | } | |
1657 | ||
1658 | case XFS_IOC_SET_RESBLKS: { | |
1659 | xfs_fsop_resblks_t inout; | |
1660 | __uint64_t in; | |
1661 | ||
1662 | if (!capable(CAP_SYS_ADMIN)) | |
1663 | return -EPERM; | |
1664 | ||
d5db0f97 | 1665 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
b474c7ae | 1666 | return -EROFS; |
d5db0f97 | 1667 | |
df26cfe8 | 1668 | if (copy_from_user(&inout, arg, sizeof(inout))) |
b474c7ae | 1669 | return -EFAULT; |
df26cfe8 | 1670 | |
d9457dc0 JK |
1671 | error = mnt_want_write_file(filp); |
1672 | if (error) | |
1673 | return error; | |
1674 | ||
df26cfe8 LM |
1675 | /* input parameter is passed in resblks field of structure */ |
1676 | in = inout.resblks; | |
1677 | error = xfs_reserve_blocks(mp, &in, &inout); | |
d9457dc0 | 1678 | mnt_drop_write_file(filp); |
df26cfe8 | 1679 | if (error) |
2451337d | 1680 | return error; |
df26cfe8 LM |
1681 | |
1682 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
b474c7ae | 1683 | return -EFAULT; |
df26cfe8 LM |
1684 | return 0; |
1685 | } | |
1686 | ||
1687 | case XFS_IOC_GET_RESBLKS: { | |
1688 | xfs_fsop_resblks_t out; | |
1689 | ||
1690 | if (!capable(CAP_SYS_ADMIN)) | |
1691 | return -EPERM; | |
1692 | ||
1693 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1694 | if (error) | |
2451337d | 1695 | return error; |
df26cfe8 LM |
1696 | |
1697 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 1698 | return -EFAULT; |
df26cfe8 LM |
1699 | |
1700 | return 0; | |
1701 | } | |
1702 | ||
1703 | case XFS_IOC_FSGROWFSDATA: { | |
1704 | xfs_growfs_data_t in; | |
1705 | ||
df26cfe8 | 1706 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1707 | return -EFAULT; |
df26cfe8 | 1708 | |
d9457dc0 JK |
1709 | error = mnt_want_write_file(filp); |
1710 | if (error) | |
1711 | return error; | |
df26cfe8 | 1712 | error = xfs_growfs_data(mp, &in); |
d9457dc0 | 1713 | mnt_drop_write_file(filp); |
2451337d | 1714 | return error; |
df26cfe8 LM |
1715 | } |
1716 | ||
1717 | case XFS_IOC_FSGROWFSLOG: { | |
1718 | xfs_growfs_log_t in; | |
1719 | ||
df26cfe8 | 1720 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1721 | return -EFAULT; |
df26cfe8 | 1722 | |
d9457dc0 JK |
1723 | error = mnt_want_write_file(filp); |
1724 | if (error) | |
1725 | return error; | |
df26cfe8 | 1726 | error = xfs_growfs_log(mp, &in); |
d9457dc0 | 1727 | mnt_drop_write_file(filp); |
2451337d | 1728 | return error; |
df26cfe8 LM |
1729 | } |
1730 | ||
1731 | case XFS_IOC_FSGROWFSRT: { | |
1732 | xfs_growfs_rt_t in; | |
1733 | ||
df26cfe8 | 1734 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1735 | return -EFAULT; |
df26cfe8 | 1736 | |
d9457dc0 JK |
1737 | error = mnt_want_write_file(filp); |
1738 | if (error) | |
1739 | return error; | |
df26cfe8 | 1740 | error = xfs_growfs_rt(mp, &in); |
d9457dc0 | 1741 | mnt_drop_write_file(filp); |
2451337d | 1742 | return error; |
df26cfe8 LM |
1743 | } |
1744 | ||
df26cfe8 LM |
1745 | case XFS_IOC_GOINGDOWN: { |
1746 | __uint32_t in; | |
1747 | ||
1748 | if (!capable(CAP_SYS_ADMIN)) | |
1749 | return -EPERM; | |
1750 | ||
1751 | if (get_user(in, (__uint32_t __user *)arg)) | |
b474c7ae | 1752 | return -EFAULT; |
df26cfe8 | 1753 | |
2451337d | 1754 | return xfs_fs_goingdown(mp, in); |
df26cfe8 LM |
1755 | } |
1756 | ||
1757 | case XFS_IOC_ERROR_INJECTION: { | |
1758 | xfs_error_injection_t in; | |
1759 | ||
1760 | if (!capable(CAP_SYS_ADMIN)) | |
1761 | return -EPERM; | |
1762 | ||
1763 | if (copy_from_user(&in, arg, sizeof(in))) | |
b474c7ae | 1764 | return -EFAULT; |
df26cfe8 | 1765 | |
2451337d | 1766 | return xfs_errortag_add(in.errtag, mp); |
df26cfe8 LM |
1767 | } |
1768 | ||
1769 | case XFS_IOC_ERROR_CLEARALL: | |
1770 | if (!capable(CAP_SYS_ADMIN)) | |
1771 | return -EPERM; | |
1772 | ||
2451337d | 1773 | return xfs_errortag_clearall(mp, 1); |
df26cfe8 | 1774 | |
8ca149de | 1775 | case XFS_IOC_FREE_EOFBLOCKS: { |
b9fe5052 DE |
1776 | struct xfs_fs_eofblocks eofb; |
1777 | struct xfs_eofblocks keofb; | |
8ca149de | 1778 | |
8c567a7f DE |
1779 | if (!capable(CAP_SYS_ADMIN)) |
1780 | return -EPERM; | |
1781 | ||
1782 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
b474c7ae | 1783 | return -EROFS; |
8c567a7f | 1784 | |
8ca149de | 1785 | if (copy_from_user(&eofb, arg, sizeof(eofb))) |
b474c7ae | 1786 | return -EFAULT; |
8ca149de | 1787 | |
b9fe5052 DE |
1788 | error = xfs_fs_eofblocks_from_user(&eofb, &keofb); |
1789 | if (error) | |
2451337d | 1790 | return error; |
8ca149de | 1791 | |
2451337d | 1792 | return xfs_icache_free_eofblocks(mp, &keofb); |
8ca149de BF |
1793 | } |
1794 | ||
df26cfe8 LM |
1795 | default: |
1796 | return -ENOTTY; | |
1797 | } | |
1798 | } |