Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 | 18 | #include "xfs.h" |
1da177e4 | 19 | #include "xfs_fs.h" |
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" |
781355c6 | 42 | #include "xfs_pnfs.h" |
1da177e4 | 43 | |
16f7e0fe | 44 | #include <linux/capability.h> |
1da177e4 LT |
45 | #include <linux/dcache.h> |
46 | #include <linux/mount.h> | |
47 | #include <linux/namei.h> | |
48 | #include <linux/pagemap.h> | |
5a0e3ad6 | 49 | #include <linux/slab.h> |
d296d30a | 50 | #include <linux/exportfs.h> |
1da177e4 LT |
51 | |
52 | /* | |
53 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
54 | * a file or fs handle. | |
55 | * | |
56 | * XFS_IOC_PATH_TO_FSHANDLE | |
57 | * returns fs handle for a mount point or path within that mount point | |
58 | * XFS_IOC_FD_TO_HANDLE | |
59 | * returns full handle for a FD opened in user space | |
60 | * XFS_IOC_PATH_TO_HANDLE | |
61 | * returns full handle for a path | |
62 | */ | |
d5547f9f | 63 | int |
1da177e4 LT |
64 | xfs_find_handle( |
65 | unsigned int cmd, | |
743bb465 | 66 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
67 | { |
68 | int hsize; | |
69 | xfs_handle_t handle; | |
1da177e4 | 70 | struct inode *inode; |
a30b0367 | 71 | struct fd f = {NULL}; |
4346cdd4 | 72 | struct path path; |
2903ff01 | 73 | int error; |
4346cdd4 | 74 | struct xfs_inode *ip; |
1da177e4 | 75 | |
4346cdd4 | 76 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
2903ff01 AV |
77 | f = fdget(hreq->fd); |
78 | if (!f.file) | |
4346cdd4 | 79 | return -EBADF; |
496ad9aa | 80 | inode = file_inode(f.file); |
4346cdd4 CH |
81 | } else { |
82 | error = user_lpath((const char __user *)hreq->path, &path); | |
83 | if (error) | |
84 | return error; | |
2b0143b5 | 85 | inode = d_inode(path.dentry); |
1da177e4 | 86 | } |
4346cdd4 CH |
87 | ip = XFS_I(inode); |
88 | ||
89 | /* | |
90 | * We can only generate handles for inodes residing on a XFS filesystem, | |
91 | * and only for regular files, directories or symbolic links. | |
92 | */ | |
93 | error = -EINVAL; | |
94 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
95 | goto out_put; | |
96 | ||
97 | error = -EBADF; | |
98 | if (!S_ISREG(inode->i_mode) && | |
99 | !S_ISDIR(inode->i_mode) && | |
100 | !S_ISLNK(inode->i_mode)) | |
101 | goto out_put; | |
102 | ||
103 | ||
104 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
105 | ||
106 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
107 | /* | |
108 | * This handle only contains an fsid, zero the rest. | |
109 | */ | |
110 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
111 | hsize = sizeof(xfs_fsid_t); | |
112 | } else { | |
c6143911 CH |
113 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
114 | sizeof(handle.ha_fid.fid_len); | |
115 | handle.ha_fid.fid_pad = 0; | |
116 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
117 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
118 | |
119 | hsize = XFS_HSIZE(handle); | |
120 | } | |
121 | ||
4346cdd4 | 122 | error = -EFAULT; |
743bb465 | 123 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
124 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
125 | goto out_put; | |
1da177e4 | 126 | |
4346cdd4 CH |
127 | error = 0; |
128 | ||
129 | out_put: | |
130 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
2903ff01 | 131 | fdput(f); |
4346cdd4 CH |
132 | else |
133 | path_put(&path); | |
134 | return error; | |
1da177e4 LT |
135 | } |
136 | ||
1da177e4 | 137 | /* |
d296d30a CH |
138 | * No need to do permission checks on the various pathname components |
139 | * as the handle operations are privileged. | |
1da177e4 LT |
140 | */ |
141 | STATIC int | |
d296d30a CH |
142 | xfs_handle_acceptable( |
143 | void *context, | |
144 | struct dentry *dentry) | |
145 | { | |
146 | return 1; | |
147 | } | |
148 | ||
149 | /* | |
150 | * Convert userspace handle data into a dentry. | |
151 | */ | |
152 | struct dentry * | |
153 | xfs_handle_to_dentry( | |
154 | struct file *parfilp, | |
155 | void __user *uhandle, | |
156 | u32 hlen) | |
1da177e4 | 157 | { |
1da177e4 | 158 | xfs_handle_t handle; |
d296d30a | 159 | struct xfs_fid64 fid; |
1da177e4 LT |
160 | |
161 | /* | |
162 | * Only allow handle opens under a directory. | |
163 | */ | |
496ad9aa | 164 | if (!S_ISDIR(file_inode(parfilp)->i_mode)) |
d296d30a CH |
165 | return ERR_PTR(-ENOTDIR); |
166 | ||
167 | if (hlen != sizeof(xfs_handle_t)) | |
168 | return ERR_PTR(-EINVAL); | |
169 | if (copy_from_user(&handle, uhandle, hlen)) | |
170 | return ERR_PTR(-EFAULT); | |
171 | if (handle.ha_fid.fid_len != | |
172 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
173 | return ERR_PTR(-EINVAL); | |
174 | ||
175 | memset(&fid, 0, sizeof(struct fid)); | |
176 | fid.ino = handle.ha_fid.fid_ino; | |
177 | fid.gen = handle.ha_fid.fid_gen; | |
178 | ||
179 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
180 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
181 | xfs_handle_acceptable, NULL); | |
182 | } | |
1da177e4 | 183 | |
d296d30a CH |
184 | STATIC struct dentry * |
185 | xfs_handlereq_to_dentry( | |
186 | struct file *parfilp, | |
187 | xfs_fsop_handlereq_t *hreq) | |
188 | { | |
189 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
190 | } |
191 | ||
d5547f9f | 192 | int |
1da177e4 | 193 | xfs_open_by_handle( |
1da177e4 | 194 | struct file *parfilp, |
d296d30a | 195 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 196 | { |
745ca247 | 197 | const struct cred *cred = current_cred(); |
1da177e4 | 198 | int error; |
d296d30a | 199 | int fd; |
1da177e4 LT |
200 | int permflag; |
201 | struct file *filp; | |
202 | struct inode *inode; | |
203 | struct dentry *dentry; | |
1a1d7724 | 204 | fmode_t fmode; |
765927b2 | 205 | struct path path; |
1da177e4 LT |
206 | |
207 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 208 | return -EPERM; |
1da177e4 | 209 | |
d296d30a CH |
210 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
211 | if (IS_ERR(dentry)) | |
212 | return PTR_ERR(dentry); | |
2b0143b5 | 213 | inode = d_inode(dentry); |
1da177e4 LT |
214 | |
215 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
216 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
b474c7ae | 217 | error = -EPERM; |
d296d30a | 218 | goto out_dput; |
1da177e4 LT |
219 | } |
220 | ||
221 | #if BITS_PER_LONG != 32 | |
743bb465 | 222 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 223 | #endif |
d296d30a | 224 | |
743bb465 | 225 | permflag = hreq->oflags; |
1a1d7724 | 226 | fmode = OPEN_FMODE(permflag); |
1da177e4 | 227 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && |
1a1d7724 | 228 | (fmode & FMODE_WRITE) && IS_APPEND(inode)) { |
b474c7ae | 229 | error = -EPERM; |
d296d30a | 230 | goto out_dput; |
1da177e4 LT |
231 | } |
232 | ||
1a1d7724 | 233 | if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { |
b474c7ae | 234 | error = -EACCES; |
d296d30a | 235 | goto out_dput; |
1da177e4 LT |
236 | } |
237 | ||
238 | /* Can't write directories. */ | |
1a1d7724 | 239 | if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) { |
b474c7ae | 240 | error = -EISDIR; |
d296d30a | 241 | goto out_dput; |
1da177e4 LT |
242 | } |
243 | ||
862a6293 | 244 | fd = get_unused_fd_flags(0); |
d296d30a CH |
245 | if (fd < 0) { |
246 | error = fd; | |
247 | goto out_dput; | |
1da177e4 LT |
248 | } |
249 | ||
765927b2 AV |
250 | path.mnt = parfilp->f_path.mnt; |
251 | path.dentry = dentry; | |
252 | filp = dentry_open(&path, hreq->oflags, cred); | |
253 | dput(dentry); | |
1da177e4 | 254 | if (IS_ERR(filp)) { |
d296d30a CH |
255 | put_unused_fd(fd); |
256 | return PTR_ERR(filp); | |
1da177e4 | 257 | } |
4d4be482 | 258 | |
03209378 | 259 | if (S_ISREG(inode->i_mode)) { |
2e2e7bb1 | 260 | filp->f_flags |= O_NOATIME; |
4d4be482 | 261 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 262 | } |
1da177e4 | 263 | |
d296d30a CH |
264 | fd_install(fd, filp); |
265 | return fd; | |
266 | ||
267 | out_dput: | |
268 | dput(dentry); | |
269 | return error; | |
1da177e4 LT |
270 | } |
271 | ||
d5547f9f | 272 | int |
1da177e4 | 273 | xfs_readlink_by_handle( |
d296d30a CH |
274 | struct file *parfilp, |
275 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 276 | { |
d296d30a | 277 | struct dentry *dentry; |
1da177e4 | 278 | __u32 olen; |
804c83c3 CH |
279 | void *link; |
280 | int error; | |
1da177e4 LT |
281 | |
282 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 283 | return -EPERM; |
1da177e4 | 284 | |
d296d30a CH |
285 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
286 | if (IS_ERR(dentry)) | |
287 | return PTR_ERR(dentry); | |
1da177e4 LT |
288 | |
289 | /* Restrict this handle operation to symlinks only. */ | |
e36cb0b8 | 290 | if (!d_is_symlink(dentry)) { |
b474c7ae | 291 | error = -EINVAL; |
d296d30a | 292 | goto out_dput; |
1da177e4 LT |
293 | } |
294 | ||
743bb465 | 295 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
b474c7ae | 296 | error = -EFAULT; |
d296d30a | 297 | goto out_dput; |
1da177e4 | 298 | } |
1da177e4 | 299 | |
804c83c3 | 300 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
d296d30a | 301 | if (!link) { |
b474c7ae | 302 | error = -ENOMEM; |
d296d30a CH |
303 | goto out_dput; |
304 | } | |
1da177e4 | 305 | |
2b0143b5 | 306 | error = xfs_readlink(XFS_I(d_inode(dentry)), link); |
67fcaa73 | 307 | if (error) |
804c83c3 | 308 | goto out_kfree; |
5d826c84 | 309 | error = readlink_copy(hreq->ohandle, olen, link); |
804c83c3 CH |
310 | if (error) |
311 | goto out_kfree; | |
67fcaa73 | 312 | |
804c83c3 CH |
313 | out_kfree: |
314 | kfree(link); | |
d296d30a CH |
315 | out_dput: |
316 | dput(dentry); | |
804c83c3 | 317 | return error; |
1da177e4 LT |
318 | } |
319 | ||
c24b5dfa DC |
320 | int |
321 | xfs_set_dmattrs( | |
322 | xfs_inode_t *ip, | |
323 | u_int evmask, | |
324 | u_int16_t state) | |
325 | { | |
326 | xfs_mount_t *mp = ip->i_mount; | |
327 | xfs_trans_t *tp; | |
328 | int error; | |
329 | ||
330 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 331 | return -EPERM; |
c24b5dfa DC |
332 | |
333 | if (XFS_FORCED_SHUTDOWN(mp)) | |
2451337d | 334 | return -EIO; |
c24b5dfa DC |
335 | |
336 | tp = xfs_trans_alloc(mp, XFS_TRANS_SET_DMATTRS); | |
3d3c8b52 | 337 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); |
c24b5dfa DC |
338 | if (error) { |
339 | xfs_trans_cancel(tp, 0); | |
340 | return error; | |
341 | } | |
342 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
343 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
344 | ||
345 | ip->i_d.di_dmevmask = evmask; | |
346 | ip->i_d.di_dmstate = state; | |
347 | ||
348 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
349 | error = xfs_trans_commit(tp, 0); | |
350 | ||
351 | return error; | |
352 | } | |
353 | ||
1da177e4 LT |
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)) | |
b474c7ae | 365 | return -EPERM; |
1da177e4 | 366 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) |
b474c7ae | 367 | return -EFAULT; |
1da177e4 | 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 | |
2b0143b5 | 379 | if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) { |
b474c7ae | 380 | error = -EPERM; |
6e7f75ea | 381 | goto out; |
1da177e4 LT |
382 | } |
383 | ||
384 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
b474c7ae | 385 | error = -EFAULT; |
6e7f75ea | 386 | goto out; |
1da177e4 LT |
387 | } |
388 | ||
2b0143b5 | 389 | error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), 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)) | |
b474c7ae | 410 | return -EPERM; |
1da177e4 | 411 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) |
b474c7ae | 412 | return -EFAULT; |
071c529e DC |
413 | if (al_hreq.buflen < sizeof(struct attrlist) || |
414 | al_hreq.buflen > XATTR_LIST_MAX) | |
b474c7ae | 415 | return -EINVAL; |
1da177e4 | 416 | |
90ad58a8 CH |
417 | /* |
418 | * Reject flags, only allow namespaces. | |
419 | */ | |
420 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
b474c7ae | 421 | return -EINVAL; |
90ad58a8 | 422 | |
d296d30a CH |
423 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
424 | if (IS_ERR(dentry)) | |
425 | return PTR_ERR(dentry); | |
1da177e4 | 426 | |
fdd3ccee DC |
427 | kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP); |
428 | if (!kbuf) | |
429 | goto out_dput; | |
1da177e4 LT |
430 | |
431 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
2b0143b5 | 432 | error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen, |
739bfb2a | 433 | al_hreq.flags, cursor); |
1da177e4 LT |
434 | if (error) |
435 | goto out_kfree; | |
436 | ||
437 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
438 | error = -EFAULT; | |
439 | ||
fdd3ccee DC |
440 | out_kfree: |
441 | kmem_free(kbuf); | |
442 | out_dput: | |
d296d30a CH |
443 | dput(dentry); |
444 | return error; | |
1da177e4 LT |
445 | } |
446 | ||
28750975 | 447 | int |
1da177e4 | 448 | xfs_attrmulti_attr_get( |
739bfb2a | 449 | struct inode *inode, |
a9273ca5 DC |
450 | unsigned char *name, |
451 | unsigned char __user *ubuf, | |
1da177e4 LT |
452 | __uint32_t *len, |
453 | __uint32_t flags) | |
454 | { | |
a9273ca5 | 455 | unsigned char *kbuf; |
2451337d | 456 | int error = -EFAULT; |
e8b0ebaa | 457 | |
1da177e4 | 458 | if (*len > XATTR_SIZE_MAX) |
2451337d | 459 | return -EINVAL; |
fdd3ccee DC |
460 | kbuf = kmem_zalloc_large(*len, KM_SLEEP); |
461 | if (!kbuf) | |
2451337d | 462 | return -ENOMEM; |
1da177e4 | 463 | |
e8b0ebaa | 464 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
465 | if (error) |
466 | goto out_kfree; | |
467 | ||
468 | if (copy_to_user(ubuf, kbuf, *len)) | |
2451337d | 469 | error = -EFAULT; |
1da177e4 | 470 | |
fdd3ccee DC |
471 | out_kfree: |
472 | kmem_free(kbuf); | |
1da177e4 LT |
473 | return error; |
474 | } | |
475 | ||
28750975 | 476 | int |
1da177e4 | 477 | xfs_attrmulti_attr_set( |
739bfb2a | 478 | struct inode *inode, |
a9273ca5 DC |
479 | unsigned char *name, |
480 | const unsigned char __user *ubuf, | |
1da177e4 LT |
481 | __uint32_t len, |
482 | __uint32_t flags) | |
483 | { | |
a9273ca5 | 484 | unsigned char *kbuf; |
1da177e4 | 485 | |
739bfb2a | 486 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
2451337d | 487 | return -EPERM; |
1da177e4 | 488 | if (len > XATTR_SIZE_MAX) |
2451337d | 489 | return -EINVAL; |
1da177e4 | 490 | |
0e639bde LZ |
491 | kbuf = memdup_user(ubuf, len); |
492 | if (IS_ERR(kbuf)) | |
493 | return PTR_ERR(kbuf); | |
e8b0ebaa | 494 | |
2451337d | 495 | return xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 LT |
496 | } |
497 | ||
28750975 | 498 | int |
1da177e4 | 499 | xfs_attrmulti_attr_remove( |
739bfb2a | 500 | struct inode *inode, |
a9273ca5 | 501 | unsigned char *name, |
1da177e4 LT |
502 | __uint32_t flags) |
503 | { | |
739bfb2a | 504 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
2451337d | 505 | return -EPERM; |
739bfb2a | 506 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
507 | } |
508 | ||
509 | STATIC int | |
510 | xfs_attrmulti_by_handle( | |
42a74f20 | 511 | struct file *parfilp, |
d296d30a | 512 | void __user *arg) |
1da177e4 LT |
513 | { |
514 | int error; | |
515 | xfs_attr_multiop_t *ops; | |
516 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 517 | struct dentry *dentry; |
1da177e4 | 518 | unsigned int i, size; |
a9273ca5 | 519 | unsigned char *attr_name; |
1da177e4 LT |
520 | |
521 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 522 | return -EPERM; |
1da177e4 | 523 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) |
b474c7ae | 524 | return -EFAULT; |
1da177e4 | 525 | |
fda168c2 ZW |
526 | /* overflow check */ |
527 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) | |
528 | return -E2BIG; | |
529 | ||
d296d30a CH |
530 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
531 | if (IS_ERR(dentry)) | |
532 | return PTR_ERR(dentry); | |
1da177e4 | 533 | |
2451337d | 534 | error = -E2BIG; |
e182f57a | 535 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 536 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 537 | goto out_dput; |
1da177e4 | 538 | |
0e639bde LZ |
539 | ops = memdup_user(am_hreq.ops, size); |
540 | if (IS_ERR(ops)) { | |
2451337d | 541 | error = PTR_ERR(ops); |
d296d30a | 542 | goto out_dput; |
0e639bde | 543 | } |
1da177e4 | 544 | |
2451337d | 545 | error = -ENOMEM; |
1da177e4 LT |
546 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); |
547 | if (!attr_name) | |
548 | goto out_kfree_ops; | |
549 | ||
1da177e4 LT |
550 | error = 0; |
551 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 552 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
553 | ops[i].am_attrname, MAXNAMELEN); |
554 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
2451337d | 555 | error = -ERANGE; |
1da177e4 LT |
556 | if (ops[i].am_error < 0) |
557 | break; | |
558 | ||
559 | switch (ops[i].am_opcode) { | |
560 | case ATTR_OP_GET: | |
d296d30a | 561 | ops[i].am_error = xfs_attrmulti_attr_get( |
2b0143b5 | 562 | d_inode(dentry), attr_name, |
d296d30a CH |
563 | ops[i].am_attrvalue, &ops[i].am_length, |
564 | ops[i].am_flags); | |
1da177e4 LT |
565 | break; |
566 | case ATTR_OP_SET: | |
a561be71 | 567 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
568 | if (ops[i].am_error) |
569 | break; | |
d296d30a | 570 | ops[i].am_error = xfs_attrmulti_attr_set( |
2b0143b5 | 571 | d_inode(dentry), attr_name, |
d296d30a CH |
572 | ops[i].am_attrvalue, ops[i].am_length, |
573 | ops[i].am_flags); | |
2a79f17e | 574 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
575 | break; |
576 | case ATTR_OP_REMOVE: | |
a561be71 | 577 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
578 | if (ops[i].am_error) |
579 | break; | |
d296d30a | 580 | ops[i].am_error = xfs_attrmulti_attr_remove( |
2b0143b5 | 581 | d_inode(dentry), attr_name, |
d296d30a | 582 | ops[i].am_flags); |
2a79f17e | 583 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
584 | break; |
585 | default: | |
2451337d | 586 | ops[i].am_error = -EINVAL; |
1da177e4 LT |
587 | } |
588 | } | |
589 | ||
590 | if (copy_to_user(am_hreq.ops, ops, size)) | |
2451337d | 591 | error = -EFAULT; |
1da177e4 LT |
592 | |
593 | kfree(attr_name); | |
594 | out_kfree_ops: | |
595 | kfree(ops); | |
d296d30a CH |
596 | out_dput: |
597 | dput(dentry); | |
2451337d | 598 | return error; |
1da177e4 LT |
599 | } |
600 | ||
d5547f9f | 601 | int |
1da177e4 | 602 | xfs_ioc_space( |
993386c1 | 603 | struct xfs_inode *ip, |
f37ea149 | 604 | struct inode *inode, |
1da177e4 LT |
605 | struct file *filp, |
606 | int ioflags, | |
607 | unsigned int cmd, | |
743bb465 | 608 | xfs_flock64_t *bf) |
1da177e4 | 609 | { |
865e9446 | 610 | struct iattr iattr; |
8add71ca | 611 | enum xfs_prealloc_flags flags = 0; |
781355c6 | 612 | uint iolock = XFS_IOLOCK_EXCL; |
1da177e4 LT |
613 | int error; |
614 | ||
743bb465 | 615 | /* |
616 | * Only allow the sys admin to reserve space unless | |
617 | * unwritten extents are enabled. | |
618 | */ | |
619 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
620 | !capable(CAP_SYS_ADMIN)) | |
b474c7ae | 621 | return -EPERM; |
743bb465 | 622 | |
f37ea149 | 623 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
b474c7ae | 624 | return -EPERM; |
1da177e4 | 625 | |
ad4a8ac4 | 626 | if (!(filp->f_mode & FMODE_WRITE)) |
b474c7ae | 627 | return -EBADF; |
1da177e4 | 628 | |
f37ea149 | 629 | if (!S_ISREG(inode->i_mode)) |
b474c7ae | 630 | return -EINVAL; |
1da177e4 | 631 | |
8add71ca CH |
632 | if (filp->f_flags & O_DSYNC) |
633 | flags |= XFS_PREALLOC_SYNC; | |
e8e9ad42 | 634 | if (ioflags & XFS_IO_INVIS) |
8add71ca CH |
635 | flags |= XFS_PREALLOC_INVISIBLE; |
636 | ||
d9457dc0 JK |
637 | error = mnt_want_write_file(filp); |
638 | if (error) | |
639 | return error; | |
865e9446 | 640 | |
781355c6 | 641 | xfs_ilock(ip, iolock); |
21c3ea18 | 642 | error = xfs_break_layouts(inode, &iolock, false); |
781355c6 CH |
643 | if (error) |
644 | goto out_unlock; | |
865e9446 | 645 | |
e8e9ad42 DC |
646 | xfs_ilock(ip, XFS_MMAPLOCK_EXCL); |
647 | iolock |= XFS_MMAPLOCK_EXCL; | |
648 | ||
865e9446 CH |
649 | switch (bf->l_whence) { |
650 | case 0: /*SEEK_SET*/ | |
651 | break; | |
652 | case 1: /*SEEK_CUR*/ | |
653 | bf->l_start += filp->f_pos; | |
654 | break; | |
655 | case 2: /*SEEK_END*/ | |
656 | bf->l_start += XFS_ISIZE(ip); | |
657 | break; | |
658 | default: | |
2451337d | 659 | error = -EINVAL; |
865e9446 CH |
660 | goto out_unlock; |
661 | } | |
662 | ||
663 | /* | |
664 | * length of <= 0 for resv/unresv/zero is invalid. length for | |
665 | * alloc/free is ignored completely and we have no idea what userspace | |
666 | * might have set it to, so set it to zero to allow range | |
667 | * checks to pass. | |
668 | */ | |
669 | switch (cmd) { | |
670 | case XFS_IOC_ZERO_RANGE: | |
671 | case XFS_IOC_RESVSP: | |
672 | case XFS_IOC_RESVSP64: | |
673 | case XFS_IOC_UNRESVSP: | |
674 | case XFS_IOC_UNRESVSP64: | |
675 | if (bf->l_len <= 0) { | |
2451337d | 676 | error = -EINVAL; |
865e9446 CH |
677 | goto out_unlock; |
678 | } | |
679 | break; | |
680 | default: | |
681 | bf->l_len = 0; | |
682 | break; | |
683 | } | |
684 | ||
685 | if (bf->l_start < 0 || | |
8add71ca | 686 | bf->l_start > inode->i_sb->s_maxbytes || |
865e9446 | 687 | bf->l_start + bf->l_len < 0 || |
8add71ca | 688 | bf->l_start + bf->l_len >= inode->i_sb->s_maxbytes) { |
2451337d | 689 | error = -EINVAL; |
865e9446 CH |
690 | goto out_unlock; |
691 | } | |
692 | ||
693 | switch (cmd) { | |
694 | case XFS_IOC_ZERO_RANGE: | |
8add71ca | 695 | flags |= XFS_PREALLOC_SET; |
865e9446 | 696 | error = xfs_zero_file_space(ip, bf->l_start, bf->l_len); |
865e9446 CH |
697 | break; |
698 | case XFS_IOC_RESVSP: | |
699 | case XFS_IOC_RESVSP64: | |
8add71ca | 700 | flags |= XFS_PREALLOC_SET; |
865e9446 CH |
701 | error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len, |
702 | XFS_BMAPI_PREALLOC); | |
865e9446 CH |
703 | break; |
704 | case XFS_IOC_UNRESVSP: | |
705 | case XFS_IOC_UNRESVSP64: | |
706 | error = xfs_free_file_space(ip, bf->l_start, bf->l_len); | |
707 | break; | |
708 | case XFS_IOC_ALLOCSP: | |
709 | case XFS_IOC_ALLOCSP64: | |
710 | case XFS_IOC_FREESP: | |
711 | case XFS_IOC_FREESP64: | |
8add71ca | 712 | flags |= XFS_PREALLOC_CLEAR; |
865e9446 CH |
713 | if (bf->l_start > XFS_ISIZE(ip)) { |
714 | error = xfs_alloc_file_space(ip, XFS_ISIZE(ip), | |
715 | bf->l_start - XFS_ISIZE(ip), 0); | |
716 | if (error) | |
717 | goto out_unlock; | |
718 | } | |
719 | ||
720 | iattr.ia_valid = ATTR_SIZE; | |
721 | iattr.ia_size = bf->l_start; | |
722 | ||
723 | error = xfs_setattr_size(ip, &iattr); | |
865e9446 CH |
724 | break; |
725 | default: | |
726 | ASSERT(0); | |
2451337d | 727 | error = -EINVAL; |
865e9446 CH |
728 | } |
729 | ||
730 | if (error) | |
731 | goto out_unlock; | |
732 | ||
8add71ca | 733 | error = xfs_update_prealloc_flags(ip, flags); |
865e9446 CH |
734 | |
735 | out_unlock: | |
781355c6 | 736 | xfs_iunlock(ip, iolock); |
d9457dc0 | 737 | mnt_drop_write_file(filp); |
2451337d | 738 | return error; |
1da177e4 LT |
739 | } |
740 | ||
741 | STATIC int | |
742 | xfs_ioc_bulkstat( | |
743 | xfs_mount_t *mp, | |
744 | unsigned int cmd, | |
745 | void __user *arg) | |
746 | { | |
747 | xfs_fsop_bulkreq_t bulkreq; | |
748 | int count; /* # of records returned */ | |
749 | xfs_ino_t inlast; /* last inode number */ | |
750 | int done; | |
751 | int error; | |
752 | ||
753 | /* done = 1 if there are more stats to get and if bulkstat */ | |
754 | /* should be called again (unused here, but used in dmapi) */ | |
755 | ||
756 | if (!capable(CAP_SYS_ADMIN)) | |
757 | return -EPERM; | |
758 | ||
759 | if (XFS_FORCED_SHUTDOWN(mp)) | |
b474c7ae | 760 | return -EIO; |
1da177e4 LT |
761 | |
762 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
b474c7ae | 763 | return -EFAULT; |
1da177e4 LT |
764 | |
765 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
b474c7ae | 766 | return -EFAULT; |
1da177e4 LT |
767 | |
768 | if ((count = bulkreq.icount) <= 0) | |
b474c7ae | 769 | return -EINVAL; |
1da177e4 | 770 | |
cd57e594 | 771 | if (bulkreq.ubuffer == NULL) |
b474c7ae | 772 | return -EINVAL; |
cd57e594 | 773 | |
1da177e4 LT |
774 | if (cmd == XFS_IOC_FSINUMBERS) |
775 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 776 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 | 777 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
d716f8ee CH |
778 | error = xfs_bulkstat_one(mp, inlast, bulkreq.ubuffer, |
779 | sizeof(xfs_bstat_t), NULL, &done); | |
cd57e594 | 780 | else /* XFS_IOC_FSBULKSTAT */ |
7dce11db CH |
781 | error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, |
782 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
783 | &done); | |
1da177e4 LT |
784 | |
785 | if (error) | |
2451337d | 786 | return error; |
1da177e4 LT |
787 | |
788 | if (bulkreq.ocount != NULL) { | |
789 | if (copy_to_user(bulkreq.lastip, &inlast, | |
790 | sizeof(xfs_ino_t))) | |
b474c7ae | 791 | return -EFAULT; |
1da177e4 LT |
792 | |
793 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
b474c7ae | 794 | return -EFAULT; |
1da177e4 LT |
795 | } |
796 | ||
797 | return 0; | |
798 | } | |
799 | ||
800 | STATIC int | |
801 | xfs_ioc_fsgeometry_v1( | |
802 | xfs_mount_t *mp, | |
803 | void __user *arg) | |
804 | { | |
eeb2036b | 805 | xfs_fsop_geom_t fsgeo; |
1da177e4 LT |
806 | int error; |
807 | ||
eeb2036b | 808 | error = xfs_fs_geometry(mp, &fsgeo, 3); |
1da177e4 | 809 | if (error) |
2451337d | 810 | return error; |
1da177e4 | 811 | |
eeb2036b AE |
812 | /* |
813 | * Caller should have passed an argument of type | |
814 | * xfs_fsop_geom_v1_t. This is a proper subset of the | |
815 | * xfs_fsop_geom_t that xfs_fs_geometry() fills in. | |
816 | */ | |
817 | if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t))) | |
b474c7ae | 818 | return -EFAULT; |
1da177e4 LT |
819 | return 0; |
820 | } | |
821 | ||
822 | STATIC int | |
823 | xfs_ioc_fsgeometry( | |
824 | xfs_mount_t *mp, | |
825 | void __user *arg) | |
826 | { | |
827 | xfs_fsop_geom_t fsgeo; | |
828 | int error; | |
829 | ||
830 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
831 | if (error) | |
2451337d | 832 | return error; |
1da177e4 LT |
833 | |
834 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
b474c7ae | 835 | return -EFAULT; |
1da177e4 LT |
836 | return 0; |
837 | } | |
838 | ||
839 | /* | |
840 | * Linux extended inode flags interface. | |
841 | */ | |
1da177e4 LT |
842 | |
843 | STATIC unsigned int | |
844 | xfs_merge_ioc_xflags( | |
845 | unsigned int flags, | |
846 | unsigned int start) | |
847 | { | |
848 | unsigned int xflags = start; | |
849 | ||
39058a0e | 850 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
851 | xflags |= XFS_XFLAG_IMMUTABLE; |
852 | else | |
853 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 854 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
855 | xflags |= XFS_XFLAG_APPEND; |
856 | else | |
857 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 858 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
859 | xflags |= XFS_XFLAG_SYNC; |
860 | else | |
861 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 862 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
863 | xflags |= XFS_XFLAG_NOATIME; |
864 | else | |
865 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 866 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
867 | xflags |= XFS_XFLAG_NODUMP; |
868 | else | |
869 | xflags &= ~XFS_XFLAG_NODUMP; | |
870 | ||
871 | return xflags; | |
872 | } | |
873 | ||
874 | STATIC unsigned int | |
875 | xfs_di2lxflags( | |
876 | __uint16_t di_flags) | |
877 | { | |
878 | unsigned int flags = 0; | |
879 | ||
880 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 881 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 882 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 883 | flags |= FS_APPEND_FL; |
1da177e4 | 884 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 885 | flags |= FS_SYNC_FL; |
1da177e4 | 886 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 887 | flags |= FS_NOATIME_FL; |
1da177e4 | 888 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 889 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
890 | return flags; |
891 | } | |
892 | ||
c83bfab1 CH |
893 | STATIC int |
894 | xfs_ioc_fsgetxattr( | |
895 | xfs_inode_t *ip, | |
896 | int attr, | |
897 | void __user *arg) | |
898 | { | |
899 | struct fsxattr fa; | |
900 | ||
a122eb2f DR |
901 | memset(&fa, 0, sizeof(struct fsxattr)); |
902 | ||
c83bfab1 CH |
903 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
904 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
905 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
6743099c | 906 | fa.fsx_projid = xfs_get_projid(ip); |
c83bfab1 CH |
907 | |
908 | if (attr) { | |
909 | if (ip->i_afp) { | |
910 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
911 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
912 | sizeof(xfs_bmbt_rec_t); | |
913 | else | |
914 | fa.fsx_nextents = ip->i_d.di_anextents; | |
915 | } else | |
916 | fa.fsx_nextents = 0; | |
917 | } else { | |
918 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
919 | fa.fsx_nextents = ip->i_df.if_bytes / | |
920 | sizeof(xfs_bmbt_rec_t); | |
921 | else | |
922 | fa.fsx_nextents = ip->i_d.di_nextents; | |
923 | } | |
924 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
925 | ||
926 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
927 | return -EFAULT; | |
928 | return 0; | |
929 | } | |
930 | ||
25fe55e8 CH |
931 | STATIC void |
932 | xfs_set_diflags( | |
933 | struct xfs_inode *ip, | |
934 | unsigned int xflags) | |
935 | { | |
936 | unsigned int di_flags; | |
937 | ||
938 | /* can't set PREALLOC this way, just preserve it */ | |
939 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
940 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
941 | di_flags |= XFS_DIFLAG_IMMUTABLE; | |
942 | if (xflags & XFS_XFLAG_APPEND) | |
943 | di_flags |= XFS_DIFLAG_APPEND; | |
944 | if (xflags & XFS_XFLAG_SYNC) | |
945 | di_flags |= XFS_DIFLAG_SYNC; | |
946 | if (xflags & XFS_XFLAG_NOATIME) | |
947 | di_flags |= XFS_DIFLAG_NOATIME; | |
948 | if (xflags & XFS_XFLAG_NODUMP) | |
949 | di_flags |= XFS_DIFLAG_NODUMP; | |
25fe55e8 CH |
950 | if (xflags & XFS_XFLAG_NODEFRAG) |
951 | di_flags |= XFS_DIFLAG_NODEFRAG; | |
952 | if (xflags & XFS_XFLAG_FILESTREAM) | |
953 | di_flags |= XFS_DIFLAG_FILESTREAM; | |
abbede1b | 954 | if (S_ISDIR(ip->i_d.di_mode)) { |
25fe55e8 CH |
955 | if (xflags & XFS_XFLAG_RTINHERIT) |
956 | di_flags |= XFS_DIFLAG_RTINHERIT; | |
957 | if (xflags & XFS_XFLAG_NOSYMLINKS) | |
958 | di_flags |= XFS_DIFLAG_NOSYMLINKS; | |
959 | if (xflags & XFS_XFLAG_EXTSZINHERIT) | |
960 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; | |
9336e3a7 DC |
961 | if (xflags & XFS_XFLAG_PROJINHERIT) |
962 | di_flags |= XFS_DIFLAG_PROJINHERIT; | |
abbede1b | 963 | } else if (S_ISREG(ip->i_d.di_mode)) { |
25fe55e8 CH |
964 | if (xflags & XFS_XFLAG_REALTIME) |
965 | di_flags |= XFS_DIFLAG_REALTIME; | |
966 | if (xflags & XFS_XFLAG_EXTSIZE) | |
967 | di_flags |= XFS_DIFLAG_EXTSIZE; | |
968 | } | |
969 | ||
970 | ip->i_d.di_flags = di_flags; | |
971 | } | |
972 | ||
f13fae2d CH |
973 | STATIC void |
974 | xfs_diflags_to_linux( | |
975 | struct xfs_inode *ip) | |
976 | { | |
e4f75291 | 977 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
978 | unsigned int xflags = xfs_ip2xflags(ip); |
979 | ||
980 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
981 | inode->i_flags |= S_IMMUTABLE; | |
982 | else | |
983 | inode->i_flags &= ~S_IMMUTABLE; | |
984 | if (xflags & XFS_XFLAG_APPEND) | |
985 | inode->i_flags |= S_APPEND; | |
986 | else | |
987 | inode->i_flags &= ~S_APPEND; | |
988 | if (xflags & XFS_XFLAG_SYNC) | |
989 | inode->i_flags |= S_SYNC; | |
990 | else | |
991 | inode->i_flags &= ~S_SYNC; | |
992 | if (xflags & XFS_XFLAG_NOATIME) | |
993 | inode->i_flags |= S_NOATIME; | |
994 | else | |
995 | inode->i_flags &= ~S_NOATIME; | |
996 | } | |
25fe55e8 | 997 | |
29a17c00 DC |
998 | static int |
999 | xfs_ioctl_setattr_xflags( | |
1000 | struct xfs_trans *tp, | |
1001 | struct xfs_inode *ip, | |
1002 | struct fsxattr *fa) | |
1003 | { | |
1004 | struct xfs_mount *mp = ip->i_mount; | |
1005 | ||
1006 | /* Can't change realtime flag if any extents are allocated. */ | |
1007 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
1008 | XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & XFS_XFLAG_REALTIME)) | |
1009 | return -EINVAL; | |
1010 | ||
1011 | /* If realtime flag is set then must have realtime device */ | |
1012 | if (fa->fsx_xflags & XFS_XFLAG_REALTIME) { | |
1013 | if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 || | |
1014 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) | |
1015 | return -EINVAL; | |
1016 | } | |
1017 | ||
1018 | /* | |
1019 | * Can't modify an immutable/append-only file unless | |
1020 | * we have appropriate permission. | |
1021 | */ | |
1022 | if (((ip->i_d.di_flags & (XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND)) || | |
1023 | (fa->fsx_xflags & (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && | |
1024 | !capable(CAP_LINUX_IMMUTABLE)) | |
1025 | return -EPERM; | |
1026 | ||
29a17c00 DC |
1027 | xfs_set_diflags(ip, fa->fsx_xflags); |
1028 | xfs_diflags_to_linux(ip); | |
1029 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); | |
1030 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
1031 | XFS_STATS_INC(xs_ig_attrchg); | |
1032 | return 0; | |
1033 | } | |
1034 | ||
8f3d17ab DC |
1035 | /* |
1036 | * Set up the transaction structure for the setattr operation, checking that we | |
1037 | * have permission to do so. On success, return a clean transaction and the | |
1038 | * inode locked exclusively ready for further operation specific checks. On | |
1039 | * failure, return an error without modifying or locking the inode. | |
1040 | */ | |
1041 | static struct xfs_trans * | |
1042 | xfs_ioctl_setattr_get_trans( | |
1043 | struct xfs_inode *ip) | |
1044 | { | |
1045 | struct xfs_mount *mp = ip->i_mount; | |
1046 | struct xfs_trans *tp; | |
1047 | int error; | |
1048 | ||
1049 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
1050 | return ERR_PTR(-EROFS); | |
1051 | if (XFS_FORCED_SHUTDOWN(mp)) | |
1052 | return ERR_PTR(-EIO); | |
1053 | ||
1054 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
1055 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); | |
1056 | if (error) | |
1057 | goto out_cancel; | |
1058 | ||
1059 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
1060 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
1061 | ||
1062 | /* | |
1063 | * CAP_FOWNER overrides the following restrictions: | |
1064 | * | |
1065 | * The user ID of the calling process must be equal to the file owner | |
1066 | * ID, except in cases where the CAP_FSETID capability is applicable. | |
1067 | */ | |
1068 | if (!inode_owner_or_capable(VFS_I(ip))) { | |
1069 | error = -EPERM; | |
1070 | goto out_cancel; | |
1071 | } | |
1072 | ||
1073 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1074 | xfs_trans_set_sync(tp); | |
1075 | ||
1076 | return tp; | |
1077 | ||
1078 | out_cancel: | |
1079 | xfs_trans_cancel(tp, 0); | |
1080 | return ERR_PTR(error); | |
1081 | } | |
1082 | ||
9b94fcc3 IP |
1083 | /* |
1084 | * extent size hint validation is somewhat cumbersome. Rules are: | |
1085 | * | |
1086 | * 1. extent size hint is only valid for directories and regular files | |
1087 | * 2. XFS_XFLAG_EXTSIZE is only valid for regular files | |
1088 | * 3. XFS_XFLAG_EXTSZINHERIT is only valid for directories. | |
1089 | * 4. can only be changed on regular files if no extents are allocated | |
1090 | * 5. can be changed on directories at any time | |
1091 | * 6. extsize hint of 0 turns off hints, clears inode flags. | |
1092 | * 7. Extent size must be a multiple of the appropriate block size. | |
1093 | * 8. for non-realtime files, the extent size hint must be limited | |
1094 | * to half the AG size to avoid alignment extending the extent beyond the | |
1095 | * limits of the AG. | |
1096 | */ | |
f92090e9 | 1097 | static int |
d4388d3c DC |
1098 | xfs_ioctl_setattr_check_extsize( |
1099 | struct xfs_inode *ip, | |
1100 | struct fsxattr *fa) | |
1101 | { | |
1102 | struct xfs_mount *mp = ip->i_mount; | |
1103 | ||
9b94fcc3 IP |
1104 | if ((fa->fsx_xflags & XFS_XFLAG_EXTSIZE) && !S_ISREG(ip->i_d.di_mode)) |
1105 | return -EINVAL; | |
1106 | ||
1107 | if ((fa->fsx_xflags & XFS_XFLAG_EXTSZINHERIT) && | |
1108 | !S_ISDIR(ip->i_d.di_mode)) | |
1109 | return -EINVAL; | |
1110 | ||
1111 | if (S_ISREG(ip->i_d.di_mode) && ip->i_d.di_nextents && | |
d4388d3c DC |
1112 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize)) |
1113 | return -EINVAL; | |
1114 | ||
d4388d3c DC |
1115 | if (fa->fsx_extsize != 0) { |
1116 | xfs_extlen_t size; | |
1117 | xfs_fsblock_t extsize_fsb; | |
1118 | ||
1119 | extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); | |
1120 | if (extsize_fsb > MAXEXTLEN) | |
1121 | return -EINVAL; | |
1122 | ||
1123 | if (XFS_IS_REALTIME_INODE(ip) || | |
1124 | (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1125 | size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog; | |
1126 | } else { | |
1127 | size = mp->m_sb.sb_blocksize; | |
1128 | if (extsize_fsb > mp->m_sb.sb_agblocks / 2) | |
1129 | return -EINVAL; | |
1130 | } | |
1131 | ||
1132 | if (fa->fsx_extsize % size) | |
1133 | return -EINVAL; | |
9b94fcc3 IP |
1134 | } else |
1135 | fa->fsx_xflags &= ~(XFS_XFLAG_EXTSIZE | XFS_XFLAG_EXTSZINHERIT); | |
1136 | ||
d4388d3c DC |
1137 | return 0; |
1138 | } | |
1139 | ||
f92090e9 | 1140 | static int |
23bd0735 DC |
1141 | xfs_ioctl_setattr_check_projid( |
1142 | struct xfs_inode *ip, | |
1143 | struct fsxattr *fa) | |
1144 | { | |
1145 | /* Disallow 32bit project ids if projid32bit feature is not enabled. */ | |
1146 | if (fa->fsx_projid > (__uint16_t)-1 && | |
1147 | !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) | |
1148 | return -EINVAL; | |
1149 | ||
1150 | /* | |
1151 | * Project Quota ID state is only allowed to change from within the init | |
1152 | * namespace. Enforce that restriction only if we are trying to change | |
1153 | * the quota ID state. Everything else is allowed in user namespaces. | |
1154 | */ | |
1155 | if (current_user_ns() == &init_user_ns) | |
1156 | return 0; | |
1157 | ||
1158 | if (xfs_get_projid(ip) != fa->fsx_projid) | |
1159 | return -EINVAL; | |
1160 | if ((fa->fsx_xflags & XFS_XFLAG_PROJINHERIT) != | |
1161 | (ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT)) | |
1162 | return -EINVAL; | |
1163 | ||
1164 | return 0; | |
1165 | } | |
25fe55e8 CH |
1166 | |
1167 | STATIC int | |
1168 | xfs_ioctl_setattr( | |
1169 | xfs_inode_t *ip, | |
fd179b9c | 1170 | struct fsxattr *fa) |
25fe55e8 CH |
1171 | { |
1172 | struct xfs_mount *mp = ip->i_mount; | |
1173 | struct xfs_trans *tp; | |
7d095257 | 1174 | struct xfs_dquot *udqp = NULL; |
92f8ff73 | 1175 | struct xfs_dquot *pdqp = NULL; |
25fe55e8 CH |
1176 | struct xfs_dquot *olddquot = NULL; |
1177 | int code; | |
1178 | ||
cca28fb8 | 1179 | trace_xfs_ioctl_setattr(ip); |
25fe55e8 | 1180 | |
23bd0735 DC |
1181 | code = xfs_ioctl_setattr_check_projid(ip, fa); |
1182 | if (code) | |
1183 | return code; | |
23963e54 | 1184 | |
25fe55e8 CH |
1185 | /* |
1186 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
1187 | * before we start any other transactions. Trying to do this later | |
1188 | * is messy. We don't care to take a readlock to look at the ids | |
1189 | * in inode here, because we can't hold it across the trans_reserve. | |
1190 | * If the IDs do change before we take the ilock, we're covered | |
1191 | * because the i_*dquot fields will get updated anyway. | |
1192 | */ | |
fd179b9c | 1193 | if (XFS_IS_QUOTA_ON(mp)) { |
7d095257 | 1194 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
25fe55e8 | 1195 | ip->i_d.di_gid, fa->fsx_projid, |
92f8ff73 | 1196 | XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp); |
25fe55e8 CH |
1197 | if (code) |
1198 | return code; | |
1199 | } | |
1200 | ||
8f3d17ab DC |
1201 | tp = xfs_ioctl_setattr_get_trans(ip); |
1202 | if (IS_ERR(tp)) { | |
1203 | code = PTR_ERR(tp); | |
1204 | goto error_free_dquots; | |
25fe55e8 CH |
1205 | } |
1206 | ||
25fe55e8 | 1207 | |
fd179b9c DC |
1208 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) && |
1209 | xfs_get_projid(ip) != fa->fsx_projid) { | |
1210 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, pdqp, | |
1211 | capable(CAP_FOWNER) ? XFS_QMOPT_FORCE_RES : 0); | |
1212 | if (code) /* out of quota */ | |
d4388d3c | 1213 | goto error_trans_cancel; |
25fe55e8 CH |
1214 | } |
1215 | ||
d4388d3c DC |
1216 | code = xfs_ioctl_setattr_check_extsize(ip, fa); |
1217 | if (code) | |
1218 | goto error_trans_cancel; | |
25fe55e8 | 1219 | |
29a17c00 DC |
1220 | code = xfs_ioctl_setattr_xflags(tp, ip, fa); |
1221 | if (code) | |
d4388d3c | 1222 | goto error_trans_cancel; |
25fe55e8 CH |
1223 | |
1224 | /* | |
fd179b9c DC |
1225 | * Change file ownership. Must be the owner or privileged. CAP_FSETID |
1226 | * overrides the following restrictions: | |
1227 | * | |
1228 | * The set-user-ID and set-group-ID bits of a file will be cleared upon | |
1229 | * successful return from chown() | |
25fe55e8 | 1230 | */ |
25fe55e8 | 1231 | |
fd179b9c DC |
1232 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && |
1233 | !capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID)) | |
1234 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
25fe55e8 | 1235 | |
fd179b9c DC |
1236 | /* Change the ownerships and register project quota modifications */ |
1237 | if (xfs_get_projid(ip) != fa->fsx_projid) { | |
1238 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { | |
1239 | olddquot = xfs_qm_vop_chown(tp, ip, | |
1240 | &ip->i_pdquot, pdqp); | |
1241 | } | |
1242 | ASSERT(ip->i_d.di_version > 1); | |
1243 | xfs_set_projid(ip, fa->fsx_projid); | |
f13fae2d | 1244 | } |
25fe55e8 | 1245 | |
a872703f DC |
1246 | /* |
1247 | * Only set the extent size hint if we've already determined that the | |
1248 | * extent size hint should be set on the inode. If no extent size flags | |
1249 | * are set on the inode then unconditionally clear the extent size hint. | |
1250 | */ | |
fd179b9c DC |
1251 | if (ip->i_d.di_flags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT)) |
1252 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
1253 | else | |
1254 | ip->i_d.di_extsize = 0; | |
25fe55e8 | 1255 | |
25fe55e8 | 1256 | code = xfs_trans_commit(tp, 0); |
25fe55e8 CH |
1257 | |
1258 | /* | |
1259 | * Release any dquot(s) the inode had kept before chown. | |
1260 | */ | |
7d095257 CH |
1261 | xfs_qm_dqrele(olddquot); |
1262 | xfs_qm_dqrele(udqp); | |
92f8ff73 | 1263 | xfs_qm_dqrele(pdqp); |
25fe55e8 | 1264 | |
288699fe | 1265 | return code; |
25fe55e8 | 1266 | |
d4388d3c | 1267 | error_trans_cancel: |
8f3d17ab DC |
1268 | xfs_trans_cancel(tp, 0); |
1269 | error_free_dquots: | |
7d095257 | 1270 | xfs_qm_dqrele(udqp); |
92f8ff73 | 1271 | xfs_qm_dqrele(pdqp); |
25fe55e8 CH |
1272 | return code; |
1273 | } | |
1274 | ||
1da177e4 | 1275 | STATIC int |
df26cfe8 | 1276 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1277 | xfs_inode_t *ip, |
1278 | struct file *filp, | |
1da177e4 LT |
1279 | void __user *arg) |
1280 | { | |
1281 | struct fsxattr fa; | |
d9457dc0 | 1282 | int error; |
df26cfe8 LM |
1283 | |
1284 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1285 | return -EFAULT; | |
1da177e4 | 1286 | |
d9457dc0 JK |
1287 | error = mnt_want_write_file(filp); |
1288 | if (error) | |
1289 | return error; | |
fd179b9c | 1290 | error = xfs_ioctl_setattr(ip, &fa); |
d9457dc0 | 1291 | mnt_drop_write_file(filp); |
2451337d | 1292 | return error; |
df26cfe8 | 1293 | } |
1da177e4 | 1294 | |
df26cfe8 LM |
1295 | STATIC int |
1296 | xfs_ioc_getxflags( | |
1297 | xfs_inode_t *ip, | |
1298 | void __user *arg) | |
1299 | { | |
1300 | unsigned int flags; | |
1da177e4 | 1301 | |
df26cfe8 LM |
1302 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1303 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1304 | return -EFAULT; | |
1305 | return 0; | |
1306 | } | |
1da177e4 | 1307 | |
df26cfe8 LM |
1308 | STATIC int |
1309 | xfs_ioc_setxflags( | |
f96291f6 | 1310 | struct xfs_inode *ip, |
df26cfe8 LM |
1311 | struct file *filp, |
1312 | void __user *arg) | |
1313 | { | |
f96291f6 | 1314 | struct xfs_trans *tp; |
25fe55e8 | 1315 | struct fsxattr fa; |
df26cfe8 | 1316 | unsigned int flags; |
f96291f6 | 1317 | int error; |
1da177e4 | 1318 | |
df26cfe8 LM |
1319 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1320 | return -EFAULT; | |
1da177e4 | 1321 | |
df26cfe8 LM |
1322 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1323 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1324 | FS_SYNC_FL)) | |
1325 | return -EOPNOTSUPP; | |
1da177e4 | 1326 | |
25fe55e8 | 1327 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); |
1da177e4 | 1328 | |
d9457dc0 JK |
1329 | error = mnt_want_write_file(filp); |
1330 | if (error) | |
1331 | return error; | |
f96291f6 DC |
1332 | |
1333 | tp = xfs_ioctl_setattr_get_trans(ip); | |
1334 | if (IS_ERR(tp)) { | |
1335 | error = PTR_ERR(tp); | |
1336 | goto out_drop_write; | |
1337 | } | |
1338 | ||
1339 | error = xfs_ioctl_setattr_xflags(tp, ip, &fa); | |
1340 | if (error) { | |
1341 | xfs_trans_cancel(tp, 0); | |
1342 | goto out_drop_write; | |
1343 | } | |
1344 | ||
1345 | error = xfs_trans_commit(tp, 0); | |
1346 | out_drop_write: | |
d9457dc0 | 1347 | mnt_drop_write_file(filp); |
2451337d | 1348 | return error; |
1da177e4 LT |
1349 | } |
1350 | ||
8a7141a8 ES |
1351 | STATIC int |
1352 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) | |
1353 | { | |
b972d079 | 1354 | struct getbmap __user *base = (struct getbmap __user *)*ap; |
8a7141a8 ES |
1355 | |
1356 | /* copy only getbmap portion (not getbmapx) */ | |
1357 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
2451337d | 1358 | return -EFAULT; |
8a7141a8 ES |
1359 | |
1360 | *ap += sizeof(struct getbmap); | |
1361 | return 0; | |
1362 | } | |
1363 | ||
1da177e4 LT |
1364 | STATIC int |
1365 | xfs_ioc_getbmap( | |
993386c1 | 1366 | struct xfs_inode *ip, |
1da177e4 LT |
1367 | int ioflags, |
1368 | unsigned int cmd, | |
1369 | void __user *arg) | |
1370 | { | |
8a7141a8 | 1371 | struct getbmapx bmx; |
1da177e4 LT |
1372 | int error; |
1373 | ||
8a7141a8 | 1374 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
b474c7ae | 1375 | return -EFAULT; |
1da177e4 | 1376 | |
8a7141a8 | 1377 | if (bmx.bmv_count < 2) |
b474c7ae | 1378 | return -EINVAL; |
1da177e4 | 1379 | |
8a7141a8 | 1380 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
b92cc59f | 1381 | if (ioflags & XFS_IO_INVIS) |
8a7141a8 | 1382 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1383 | |
8a7141a8 | 1384 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
b972d079 | 1385 | (__force struct getbmap *)arg+1); |
1da177e4 | 1386 | if (error) |
2451337d | 1387 | return error; |
1da177e4 | 1388 | |
8a7141a8 ES |
1389 | /* copy back header - only size of getbmap */ |
1390 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
b474c7ae | 1391 | return -EFAULT; |
1da177e4 LT |
1392 | return 0; |
1393 | } | |
1394 | ||
8a7141a8 ES |
1395 | STATIC int |
1396 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) | |
1397 | { | |
b972d079 | 1398 | struct getbmapx __user *base = (struct getbmapx __user *)*ap; |
8a7141a8 ES |
1399 | |
1400 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
2451337d | 1401 | return -EFAULT; |
8a7141a8 ES |
1402 | |
1403 | *ap += sizeof(struct getbmapx); | |
1404 | return 0; | |
1405 | } | |
1406 | ||
1da177e4 LT |
1407 | STATIC int |
1408 | xfs_ioc_getbmapx( | |
993386c1 | 1409 | struct xfs_inode *ip, |
1da177e4 LT |
1410 | void __user *arg) |
1411 | { | |
1412 | struct getbmapx bmx; | |
1da177e4 LT |
1413 | int error; |
1414 | ||
1415 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
b474c7ae | 1416 | return -EFAULT; |
1da177e4 LT |
1417 | |
1418 | if (bmx.bmv_count < 2) | |
b474c7ae | 1419 | return -EINVAL; |
1da177e4 | 1420 | |
8a7141a8 | 1421 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
b474c7ae | 1422 | return -EINVAL; |
1da177e4 | 1423 | |
8a7141a8 | 1424 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
b972d079 | 1425 | (__force struct getbmapx *)arg+1); |
1da177e4 | 1426 | if (error) |
2451337d | 1427 | return error; |
1da177e4 | 1428 | |
8a7141a8 ES |
1429 | /* copy back header */ |
1430 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
b474c7ae | 1431 | return -EFAULT; |
1da177e4 LT |
1432 | |
1433 | return 0; | |
1434 | } | |
df26cfe8 | 1435 | |
a133d952 DC |
1436 | int |
1437 | xfs_ioc_swapext( | |
1438 | xfs_swapext_t *sxp) | |
1439 | { | |
1440 | xfs_inode_t *ip, *tip; | |
1441 | struct fd f, tmp; | |
1442 | int error = 0; | |
1443 | ||
1444 | /* Pull information for the target fd */ | |
1445 | f = fdget((int)sxp->sx_fdtarget); | |
1446 | if (!f.file) { | |
2451337d | 1447 | error = -EINVAL; |
a133d952 DC |
1448 | goto out; |
1449 | } | |
1450 | ||
1451 | if (!(f.file->f_mode & FMODE_WRITE) || | |
1452 | !(f.file->f_mode & FMODE_READ) || | |
1453 | (f.file->f_flags & O_APPEND)) { | |
2451337d | 1454 | error = -EBADF; |
a133d952 DC |
1455 | goto out_put_file; |
1456 | } | |
1457 | ||
1458 | tmp = fdget((int)sxp->sx_fdtmp); | |
1459 | if (!tmp.file) { | |
2451337d | 1460 | error = -EINVAL; |
a133d952 DC |
1461 | goto out_put_file; |
1462 | } | |
1463 | ||
1464 | if (!(tmp.file->f_mode & FMODE_WRITE) || | |
1465 | !(tmp.file->f_mode & FMODE_READ) || | |
1466 | (tmp.file->f_flags & O_APPEND)) { | |
2451337d | 1467 | error = -EBADF; |
a133d952 DC |
1468 | goto out_put_tmp_file; |
1469 | } | |
1470 | ||
1471 | if (IS_SWAPFILE(file_inode(f.file)) || | |
1472 | IS_SWAPFILE(file_inode(tmp.file))) { | |
2451337d | 1473 | error = -EINVAL; |
a133d952 DC |
1474 | goto out_put_tmp_file; |
1475 | } | |
1476 | ||
1477 | ip = XFS_I(file_inode(f.file)); | |
1478 | tip = XFS_I(file_inode(tmp.file)); | |
1479 | ||
1480 | if (ip->i_mount != tip->i_mount) { | |
2451337d | 1481 | error = -EINVAL; |
a133d952 DC |
1482 | goto out_put_tmp_file; |
1483 | } | |
1484 | ||
1485 | if (ip->i_ino == tip->i_ino) { | |
2451337d | 1486 | error = -EINVAL; |
a133d952 DC |
1487 | goto out_put_tmp_file; |
1488 | } | |
1489 | ||
1490 | if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { | |
2451337d | 1491 | error = -EIO; |
a133d952 DC |
1492 | goto out_put_tmp_file; |
1493 | } | |
1494 | ||
1495 | error = xfs_swap_extents(ip, tip, sxp); | |
1496 | ||
1497 | out_put_tmp_file: | |
1498 | fdput(tmp); | |
1499 | out_put_file: | |
1500 | fdput(f); | |
1501 | out: | |
1502 | return error; | |
1503 | } | |
1504 | ||
4d4be482 CH |
1505 | /* |
1506 | * Note: some of the ioctl's return positive numbers as a | |
1507 | * byte count indicating success, such as readlink_by_handle. | |
1508 | * So we don't "sign flip" like most other routines. This means | |
1509 | * true errors need to be returned as a negative value. | |
1510 | */ | |
1511 | long | |
1512 | xfs_file_ioctl( | |
df26cfe8 | 1513 | struct file *filp, |
df26cfe8 | 1514 | unsigned int cmd, |
4d4be482 | 1515 | unsigned long p) |
df26cfe8 | 1516 | { |
496ad9aa | 1517 | struct inode *inode = file_inode(filp); |
4d4be482 CH |
1518 | struct xfs_inode *ip = XFS_I(inode); |
1519 | struct xfs_mount *mp = ip->i_mount; | |
1520 | void __user *arg = (void __user *)p; | |
1521 | int ioflags = 0; | |
df26cfe8 LM |
1522 | int error; |
1523 | ||
4d4be482 | 1524 | if (filp->f_mode & FMODE_NOCMTIME) |
b92cc59f | 1525 | ioflags |= XFS_IO_INVIS; |
df26cfe8 | 1526 | |
cca28fb8 | 1527 | trace_xfs_file_ioctl(ip); |
4d4be482 CH |
1528 | |
1529 | switch (cmd) { | |
a46db608 CH |
1530 | case FITRIM: |
1531 | return xfs_ioc_trim(mp, arg); | |
df26cfe8 LM |
1532 | case XFS_IOC_ALLOCSP: |
1533 | case XFS_IOC_FREESP: | |
1534 | case XFS_IOC_RESVSP: | |
1535 | case XFS_IOC_UNRESVSP: | |
1536 | case XFS_IOC_ALLOCSP64: | |
1537 | case XFS_IOC_FREESP64: | |
1538 | case XFS_IOC_RESVSP64: | |
44722352 DC |
1539 | case XFS_IOC_UNRESVSP64: |
1540 | case XFS_IOC_ZERO_RANGE: { | |
743bb465 | 1541 | xfs_flock64_t bf; |
df26cfe8 | 1542 | |
743bb465 | 1543 | if (copy_from_user(&bf, arg, sizeof(bf))) |
b474c7ae | 1544 | return -EFAULT; |
743bb465 | 1545 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); |
1546 | } | |
df26cfe8 LM |
1547 | case XFS_IOC_DIOINFO: { |
1548 | struct dioattr da; | |
1549 | xfs_buftarg_t *target = | |
1550 | XFS_IS_REALTIME_INODE(ip) ? | |
1551 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1552 | ||
7c71ee78 | 1553 | da.d_mem = da.d_miniosz = target->bt_logical_sectorsize; |
df26cfe8 LM |
1554 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); |
1555 | ||
1556 | if (copy_to_user(arg, &da, sizeof(da))) | |
b474c7ae | 1557 | return -EFAULT; |
df26cfe8 LM |
1558 | return 0; |
1559 | } | |
1560 | ||
1561 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1562 | case XFS_IOC_FSBULKSTAT: | |
1563 | case XFS_IOC_FSINUMBERS: | |
1564 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1565 | ||
1566 | case XFS_IOC_FSGEOMETRY_V1: | |
1567 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1568 | ||
1569 | case XFS_IOC_FSGEOMETRY: | |
1570 | return xfs_ioc_fsgeometry(mp, arg); | |
1571 | ||
1572 | case XFS_IOC_GETVERSION: | |
1573 | return put_user(inode->i_generation, (int __user *)arg); | |
1574 | ||
1575 | case XFS_IOC_FSGETXATTR: | |
1576 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1577 | case XFS_IOC_FSGETXATTRA: | |
1578 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1579 | case XFS_IOC_FSSETXATTR: |
1580 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1581 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1582 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1583 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1584 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1585 | |
1586 | case XFS_IOC_FSSETDM: { | |
1587 | struct fsdmidata dmi; | |
1588 | ||
1589 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
b474c7ae | 1590 | return -EFAULT; |
df26cfe8 | 1591 | |
d9457dc0 JK |
1592 | error = mnt_want_write_file(filp); |
1593 | if (error) | |
1594 | return error; | |
1595 | ||
df26cfe8 LM |
1596 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, |
1597 | dmi.fsd_dmstate); | |
d9457dc0 | 1598 | mnt_drop_write_file(filp); |
2451337d | 1599 | return error; |
df26cfe8 LM |
1600 | } |
1601 | ||
1602 | case XFS_IOC_GETBMAP: | |
1603 | case XFS_IOC_GETBMAPA: | |
1604 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1605 | ||
1606 | case XFS_IOC_GETBMAPX: | |
1607 | return xfs_ioc_getbmapx(ip, arg); | |
1608 | ||
1609 | case XFS_IOC_FD_TO_HANDLE: | |
1610 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1611 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1612 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1613 | |
743bb465 | 1614 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
b474c7ae | 1615 | return -EFAULT; |
743bb465 | 1616 | return xfs_find_handle(cmd, &hreq); |
1617 | } | |
1618 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1619 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1620 | |
743bb465 | 1621 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 1622 | return -EFAULT; |
d296d30a | 1623 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1624 | } |
df26cfe8 | 1625 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1626 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1627 | |
743bb465 | 1628 | case XFS_IOC_READLINK_BY_HANDLE: { |
1629 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1630 | |
743bb465 | 1631 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 1632 | return -EFAULT; |
d296d30a | 1633 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1634 | } |
df26cfe8 | 1635 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1636 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1637 | |
1638 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1639 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1640 | |
1641 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1642 | struct xfs_swapext sxp; |
1643 | ||
1644 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
b474c7ae | 1645 | return -EFAULT; |
d9457dc0 JK |
1646 | error = mnt_want_write_file(filp); |
1647 | if (error) | |
1648 | return error; | |
a133d952 | 1649 | error = xfs_ioc_swapext(&sxp); |
d9457dc0 | 1650 | mnt_drop_write_file(filp); |
2451337d | 1651 | return error; |
df26cfe8 LM |
1652 | } |
1653 | ||
1654 | case XFS_IOC_FSCOUNTS: { | |
1655 | xfs_fsop_counts_t out; | |
1656 | ||
1657 | error = xfs_fs_counts(mp, &out); | |
1658 | if (error) | |
2451337d | 1659 | return error; |
df26cfe8 LM |
1660 | |
1661 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 1662 | return -EFAULT; |
df26cfe8 LM |
1663 | return 0; |
1664 | } | |
1665 | ||
1666 | case XFS_IOC_SET_RESBLKS: { | |
1667 | xfs_fsop_resblks_t inout; | |
1668 | __uint64_t in; | |
1669 | ||
1670 | if (!capable(CAP_SYS_ADMIN)) | |
1671 | return -EPERM; | |
1672 | ||
d5db0f97 | 1673 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
b474c7ae | 1674 | return -EROFS; |
d5db0f97 | 1675 | |
df26cfe8 | 1676 | if (copy_from_user(&inout, arg, sizeof(inout))) |
b474c7ae | 1677 | return -EFAULT; |
df26cfe8 | 1678 | |
d9457dc0 JK |
1679 | error = mnt_want_write_file(filp); |
1680 | if (error) | |
1681 | return error; | |
1682 | ||
df26cfe8 LM |
1683 | /* input parameter is passed in resblks field of structure */ |
1684 | in = inout.resblks; | |
1685 | error = xfs_reserve_blocks(mp, &in, &inout); | |
d9457dc0 | 1686 | mnt_drop_write_file(filp); |
df26cfe8 | 1687 | if (error) |
2451337d | 1688 | return error; |
df26cfe8 LM |
1689 | |
1690 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
b474c7ae | 1691 | return -EFAULT; |
df26cfe8 LM |
1692 | return 0; |
1693 | } | |
1694 | ||
1695 | case XFS_IOC_GET_RESBLKS: { | |
1696 | xfs_fsop_resblks_t out; | |
1697 | ||
1698 | if (!capable(CAP_SYS_ADMIN)) | |
1699 | return -EPERM; | |
1700 | ||
1701 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1702 | if (error) | |
2451337d | 1703 | return error; |
df26cfe8 LM |
1704 | |
1705 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 1706 | return -EFAULT; |
df26cfe8 LM |
1707 | |
1708 | return 0; | |
1709 | } | |
1710 | ||
1711 | case XFS_IOC_FSGROWFSDATA: { | |
1712 | xfs_growfs_data_t in; | |
1713 | ||
df26cfe8 | 1714 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1715 | return -EFAULT; |
df26cfe8 | 1716 | |
d9457dc0 JK |
1717 | error = mnt_want_write_file(filp); |
1718 | if (error) | |
1719 | return error; | |
df26cfe8 | 1720 | error = xfs_growfs_data(mp, &in); |
d9457dc0 | 1721 | mnt_drop_write_file(filp); |
2451337d | 1722 | return error; |
df26cfe8 LM |
1723 | } |
1724 | ||
1725 | case XFS_IOC_FSGROWFSLOG: { | |
1726 | xfs_growfs_log_t in; | |
1727 | ||
df26cfe8 | 1728 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1729 | return -EFAULT; |
df26cfe8 | 1730 | |
d9457dc0 JK |
1731 | error = mnt_want_write_file(filp); |
1732 | if (error) | |
1733 | return error; | |
df26cfe8 | 1734 | error = xfs_growfs_log(mp, &in); |
d9457dc0 | 1735 | mnt_drop_write_file(filp); |
2451337d | 1736 | return error; |
df26cfe8 LM |
1737 | } |
1738 | ||
1739 | case XFS_IOC_FSGROWFSRT: { | |
1740 | xfs_growfs_rt_t in; | |
1741 | ||
df26cfe8 | 1742 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1743 | return -EFAULT; |
df26cfe8 | 1744 | |
d9457dc0 JK |
1745 | error = mnt_want_write_file(filp); |
1746 | if (error) | |
1747 | return error; | |
df26cfe8 | 1748 | error = xfs_growfs_rt(mp, &in); |
d9457dc0 | 1749 | mnt_drop_write_file(filp); |
2451337d | 1750 | return error; |
df26cfe8 LM |
1751 | } |
1752 | ||
df26cfe8 LM |
1753 | case XFS_IOC_GOINGDOWN: { |
1754 | __uint32_t in; | |
1755 | ||
1756 | if (!capable(CAP_SYS_ADMIN)) | |
1757 | return -EPERM; | |
1758 | ||
1759 | if (get_user(in, (__uint32_t __user *)arg)) | |
b474c7ae | 1760 | return -EFAULT; |
df26cfe8 | 1761 | |
2451337d | 1762 | return xfs_fs_goingdown(mp, in); |
df26cfe8 LM |
1763 | } |
1764 | ||
1765 | case XFS_IOC_ERROR_INJECTION: { | |
1766 | xfs_error_injection_t in; | |
1767 | ||
1768 | if (!capable(CAP_SYS_ADMIN)) | |
1769 | return -EPERM; | |
1770 | ||
1771 | if (copy_from_user(&in, arg, sizeof(in))) | |
b474c7ae | 1772 | return -EFAULT; |
df26cfe8 | 1773 | |
2451337d | 1774 | return xfs_errortag_add(in.errtag, mp); |
df26cfe8 LM |
1775 | } |
1776 | ||
1777 | case XFS_IOC_ERROR_CLEARALL: | |
1778 | if (!capable(CAP_SYS_ADMIN)) | |
1779 | return -EPERM; | |
1780 | ||
2451337d | 1781 | return xfs_errortag_clearall(mp, 1); |
df26cfe8 | 1782 | |
8ca149de | 1783 | case XFS_IOC_FREE_EOFBLOCKS: { |
b9fe5052 DE |
1784 | struct xfs_fs_eofblocks eofb; |
1785 | struct xfs_eofblocks keofb; | |
8ca149de | 1786 | |
8c567a7f DE |
1787 | if (!capable(CAP_SYS_ADMIN)) |
1788 | return -EPERM; | |
1789 | ||
1790 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
b474c7ae | 1791 | return -EROFS; |
8c567a7f | 1792 | |
8ca149de | 1793 | if (copy_from_user(&eofb, arg, sizeof(eofb))) |
b474c7ae | 1794 | return -EFAULT; |
8ca149de | 1795 | |
b9fe5052 DE |
1796 | error = xfs_fs_eofblocks_from_user(&eofb, &keofb); |
1797 | if (error) | |
2451337d | 1798 | return error; |
8ca149de | 1799 | |
2451337d | 1800 | return xfs_icache_free_eofblocks(mp, &keofb); |
8ca149de BF |
1801 | } |
1802 | ||
df26cfe8 LM |
1803 | default: |
1804 | return -ENOTTY; | |
1805 | } | |
1806 | } |