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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_sb.h" |
a844f451 | 25 | #include "xfs_ag.h" |
1da177e4 | 26 | #include "xfs_mount.h" |
1da177e4 | 27 | #include "xfs_inode.h" |
7bf446f8 | 28 | #include "xfs_ioctl.h" |
a4fbe6ab | 29 | #include "xfs_alloc.h" |
1da177e4 | 30 | #include "xfs_rtalloc.h" |
1da177e4 | 31 | #include "xfs_itable.h" |
a844f451 | 32 | #include "xfs_error.h" |
1da177e4 | 33 | #include "xfs_attr.h" |
a844f451 | 34 | #include "xfs_bmap.h" |
68988114 | 35 | #include "xfs_bmap_util.h" |
1da177e4 | 36 | #include "xfs_fsops.h" |
a46db608 | 37 | #include "xfs_discard.h" |
25fe55e8 | 38 | #include "xfs_quota.h" |
d296d30a | 39 | #include "xfs_export.h" |
0b1b213f | 40 | #include "xfs_trace.h" |
8ca149de | 41 | #include "xfs_icache.h" |
c24b5dfa | 42 | #include "xfs_symlink.h" |
a4fbe6ab DC |
43 | #include "xfs_dinode.h" |
44 | #include "xfs_trans.h" | |
1da177e4 | 45 | |
16f7e0fe | 46 | #include <linux/capability.h> |
1da177e4 LT |
47 | #include <linux/dcache.h> |
48 | #include <linux/mount.h> | |
49 | #include <linux/namei.h> | |
50 | #include <linux/pagemap.h> | |
5a0e3ad6 | 51 | #include <linux/slab.h> |
d296d30a | 52 | #include <linux/exportfs.h> |
1da177e4 LT |
53 | |
54 | /* | |
55 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
56 | * a file or fs handle. | |
57 | * | |
58 | * XFS_IOC_PATH_TO_FSHANDLE | |
59 | * returns fs handle for a mount point or path within that mount point | |
60 | * XFS_IOC_FD_TO_HANDLE | |
61 | * returns full handle for a FD opened in user space | |
62 | * XFS_IOC_PATH_TO_HANDLE | |
63 | * returns full handle for a path | |
64 | */ | |
d5547f9f | 65 | int |
1da177e4 LT |
66 | xfs_find_handle( |
67 | unsigned int cmd, | |
743bb465 | 68 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
69 | { |
70 | int hsize; | |
71 | xfs_handle_t handle; | |
1da177e4 | 72 | struct inode *inode; |
a30b0367 | 73 | struct fd f = {NULL}; |
4346cdd4 | 74 | struct path path; |
2903ff01 | 75 | int error; |
4346cdd4 | 76 | struct xfs_inode *ip; |
1da177e4 | 77 | |
4346cdd4 | 78 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
2903ff01 AV |
79 | f = fdget(hreq->fd); |
80 | if (!f.file) | |
4346cdd4 | 81 | return -EBADF; |
496ad9aa | 82 | inode = file_inode(f.file); |
4346cdd4 CH |
83 | } else { |
84 | error = user_lpath((const char __user *)hreq->path, &path); | |
85 | if (error) | |
86 | return error; | |
87 | inode = path.dentry->d_inode; | |
1da177e4 | 88 | } |
4346cdd4 CH |
89 | ip = XFS_I(inode); |
90 | ||
91 | /* | |
92 | * We can only generate handles for inodes residing on a XFS filesystem, | |
93 | * and only for regular files, directories or symbolic links. | |
94 | */ | |
95 | error = -EINVAL; | |
96 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
97 | goto out_put; | |
98 | ||
99 | error = -EBADF; | |
100 | if (!S_ISREG(inode->i_mode) && | |
101 | !S_ISDIR(inode->i_mode) && | |
102 | !S_ISLNK(inode->i_mode)) | |
103 | goto out_put; | |
104 | ||
105 | ||
106 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
107 | ||
108 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
109 | /* | |
110 | * This handle only contains an fsid, zero the rest. | |
111 | */ | |
112 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
113 | hsize = sizeof(xfs_fsid_t); | |
114 | } else { | |
c6143911 CH |
115 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
116 | sizeof(handle.ha_fid.fid_len); | |
117 | handle.ha_fid.fid_pad = 0; | |
118 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
119 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
120 | |
121 | hsize = XFS_HSIZE(handle); | |
122 | } | |
123 | ||
4346cdd4 | 124 | error = -EFAULT; |
743bb465 | 125 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
126 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
127 | goto out_put; | |
1da177e4 | 128 | |
4346cdd4 CH |
129 | error = 0; |
130 | ||
131 | out_put: | |
132 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
2903ff01 | 133 | fdput(f); |
4346cdd4 CH |
134 | else |
135 | path_put(&path); | |
136 | return error; | |
1da177e4 LT |
137 | } |
138 | ||
1da177e4 | 139 | /* |
d296d30a CH |
140 | * No need to do permission checks on the various pathname components |
141 | * as the handle operations are privileged. | |
1da177e4 LT |
142 | */ |
143 | STATIC int | |
d296d30a CH |
144 | xfs_handle_acceptable( |
145 | void *context, | |
146 | struct dentry *dentry) | |
147 | { | |
148 | return 1; | |
149 | } | |
150 | ||
151 | /* | |
152 | * Convert userspace handle data into a dentry. | |
153 | */ | |
154 | struct dentry * | |
155 | xfs_handle_to_dentry( | |
156 | struct file *parfilp, | |
157 | void __user *uhandle, | |
158 | u32 hlen) | |
1da177e4 | 159 | { |
1da177e4 | 160 | xfs_handle_t handle; |
d296d30a | 161 | struct xfs_fid64 fid; |
1da177e4 LT |
162 | |
163 | /* | |
164 | * Only allow handle opens under a directory. | |
165 | */ | |
496ad9aa | 166 | if (!S_ISDIR(file_inode(parfilp)->i_mode)) |
d296d30a CH |
167 | return ERR_PTR(-ENOTDIR); |
168 | ||
169 | if (hlen != sizeof(xfs_handle_t)) | |
170 | return ERR_PTR(-EINVAL); | |
171 | if (copy_from_user(&handle, uhandle, hlen)) | |
172 | return ERR_PTR(-EFAULT); | |
173 | if (handle.ha_fid.fid_len != | |
174 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
175 | return ERR_PTR(-EINVAL); | |
176 | ||
177 | memset(&fid, 0, sizeof(struct fid)); | |
178 | fid.ino = handle.ha_fid.fid_ino; | |
179 | fid.gen = handle.ha_fid.fid_gen; | |
180 | ||
181 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
182 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
183 | xfs_handle_acceptable, NULL); | |
184 | } | |
1da177e4 | 185 | |
d296d30a CH |
186 | STATIC struct dentry * |
187 | xfs_handlereq_to_dentry( | |
188 | struct file *parfilp, | |
189 | xfs_fsop_handlereq_t *hreq) | |
190 | { | |
191 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
192 | } |
193 | ||
d5547f9f | 194 | int |
1da177e4 | 195 | xfs_open_by_handle( |
1da177e4 | 196 | struct file *parfilp, |
d296d30a | 197 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 198 | { |
745ca247 | 199 | const struct cred *cred = current_cred(); |
1da177e4 | 200 | int error; |
d296d30a | 201 | int fd; |
1da177e4 LT |
202 | int permflag; |
203 | struct file *filp; | |
204 | struct inode *inode; | |
205 | struct dentry *dentry; | |
1a1d7724 | 206 | fmode_t fmode; |
765927b2 | 207 | struct path path; |
1da177e4 LT |
208 | |
209 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 210 | return -EPERM; |
1da177e4 | 211 | |
d296d30a CH |
212 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
213 | if (IS_ERR(dentry)) | |
214 | return PTR_ERR(dentry); | |
215 | inode = dentry->d_inode; | |
1da177e4 LT |
216 | |
217 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
218 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
b474c7ae | 219 | error = -EPERM; |
d296d30a | 220 | goto out_dput; |
1da177e4 LT |
221 | } |
222 | ||
223 | #if BITS_PER_LONG != 32 | |
743bb465 | 224 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 225 | #endif |
d296d30a | 226 | |
743bb465 | 227 | permflag = hreq->oflags; |
1a1d7724 | 228 | fmode = OPEN_FMODE(permflag); |
1da177e4 | 229 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && |
1a1d7724 | 230 | (fmode & FMODE_WRITE) && IS_APPEND(inode)) { |
b474c7ae | 231 | error = -EPERM; |
d296d30a | 232 | goto out_dput; |
1da177e4 LT |
233 | } |
234 | ||
1a1d7724 | 235 | if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { |
b474c7ae | 236 | error = -EACCES; |
d296d30a | 237 | goto out_dput; |
1da177e4 LT |
238 | } |
239 | ||
240 | /* Can't write directories. */ | |
1a1d7724 | 241 | if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) { |
b474c7ae | 242 | error = -EISDIR; |
d296d30a | 243 | goto out_dput; |
1da177e4 LT |
244 | } |
245 | ||
862a6293 | 246 | fd = get_unused_fd_flags(0); |
d296d30a CH |
247 | if (fd < 0) { |
248 | error = fd; | |
249 | goto out_dput; | |
1da177e4 LT |
250 | } |
251 | ||
765927b2 AV |
252 | path.mnt = parfilp->f_path.mnt; |
253 | path.dentry = dentry; | |
254 | filp = dentry_open(&path, hreq->oflags, cred); | |
255 | dput(dentry); | |
1da177e4 | 256 | if (IS_ERR(filp)) { |
d296d30a CH |
257 | put_unused_fd(fd); |
258 | return PTR_ERR(filp); | |
1da177e4 | 259 | } |
4d4be482 | 260 | |
03209378 | 261 | if (S_ISREG(inode->i_mode)) { |
2e2e7bb1 | 262 | filp->f_flags |= O_NOATIME; |
4d4be482 | 263 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 264 | } |
1da177e4 | 265 | |
d296d30a CH |
266 | fd_install(fd, filp); |
267 | return fd; | |
268 | ||
269 | out_dput: | |
270 | dput(dentry); | |
271 | return error; | |
1da177e4 LT |
272 | } |
273 | ||
d5547f9f | 274 | int |
1da177e4 | 275 | xfs_readlink_by_handle( |
d296d30a CH |
276 | struct file *parfilp, |
277 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 278 | { |
d296d30a | 279 | struct dentry *dentry; |
1da177e4 | 280 | __u32 olen; |
804c83c3 CH |
281 | void *link; |
282 | int error; | |
1da177e4 LT |
283 | |
284 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 285 | return -EPERM; |
1da177e4 | 286 | |
d296d30a CH |
287 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
288 | if (IS_ERR(dentry)) | |
289 | return PTR_ERR(dentry); | |
1da177e4 LT |
290 | |
291 | /* Restrict this handle operation to symlinks only. */ | |
d296d30a | 292 | if (!S_ISLNK(dentry->d_inode->i_mode)) { |
b474c7ae | 293 | error = -EINVAL; |
d296d30a | 294 | goto out_dput; |
1da177e4 LT |
295 | } |
296 | ||
743bb465 | 297 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
b474c7ae | 298 | error = -EFAULT; |
d296d30a | 299 | goto out_dput; |
1da177e4 | 300 | } |
1da177e4 | 301 | |
804c83c3 | 302 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
d296d30a | 303 | if (!link) { |
b474c7ae | 304 | error = -ENOMEM; |
d296d30a CH |
305 | goto out_dput; |
306 | } | |
1da177e4 | 307 | |
d296d30a | 308 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
67fcaa73 | 309 | if (error) |
804c83c3 | 310 | goto out_kfree; |
5d826c84 | 311 | error = readlink_copy(hreq->ohandle, olen, link); |
804c83c3 CH |
312 | if (error) |
313 | goto out_kfree; | |
67fcaa73 | 314 | |
804c83c3 CH |
315 | out_kfree: |
316 | kfree(link); | |
d296d30a CH |
317 | out_dput: |
318 | dput(dentry); | |
804c83c3 | 319 | return error; |
1da177e4 LT |
320 | } |
321 | ||
c24b5dfa DC |
322 | int |
323 | xfs_set_dmattrs( | |
324 | xfs_inode_t *ip, | |
325 | u_int evmask, | |
326 | u_int16_t state) | |
327 | { | |
328 | xfs_mount_t *mp = ip->i_mount; | |
329 | xfs_trans_t *tp; | |
330 | int error; | |
331 | ||
332 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 333 | return EPERM; |
c24b5dfa DC |
334 | |
335 | if (XFS_FORCED_SHUTDOWN(mp)) | |
b474c7ae | 336 | return EIO; |
c24b5dfa DC |
337 | |
338 | tp = xfs_trans_alloc(mp, XFS_TRANS_SET_DMATTRS); | |
3d3c8b52 | 339 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); |
c24b5dfa DC |
340 | if (error) { |
341 | xfs_trans_cancel(tp, 0); | |
342 | return error; | |
343 | } | |
344 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
345 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
346 | ||
347 | ip->i_d.di_dmevmask = evmask; | |
348 | ip->i_d.di_dmstate = state; | |
349 | ||
350 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
351 | error = xfs_trans_commit(tp, 0); | |
352 | ||
353 | return error; | |
354 | } | |
355 | ||
1da177e4 LT |
356 | STATIC int |
357 | xfs_fssetdm_by_handle( | |
d296d30a CH |
358 | struct file *parfilp, |
359 | void __user *arg) | |
1da177e4 LT |
360 | { |
361 | int error; | |
362 | struct fsdmidata fsd; | |
363 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 364 | struct dentry *dentry; |
1da177e4 LT |
365 | |
366 | if (!capable(CAP_MKNOD)) | |
b474c7ae | 367 | return -EPERM; |
1da177e4 | 368 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) |
b474c7ae | 369 | return -EFAULT; |
1da177e4 | 370 | |
d9457dc0 JK |
371 | error = mnt_want_write_file(parfilp); |
372 | if (error) | |
373 | return error; | |
374 | ||
d296d30a | 375 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
d9457dc0 JK |
376 | if (IS_ERR(dentry)) { |
377 | mnt_drop_write_file(parfilp); | |
d296d30a | 378 | return PTR_ERR(dentry); |
d9457dc0 | 379 | } |
1da177e4 | 380 | |
d296d30a | 381 | if (IS_IMMUTABLE(dentry->d_inode) || IS_APPEND(dentry->d_inode)) { |
b474c7ae | 382 | error = -EPERM; |
6e7f75ea | 383 | goto out; |
1da177e4 LT |
384 | } |
385 | ||
386 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
b474c7ae | 387 | error = -EFAULT; |
6e7f75ea | 388 | goto out; |
1da177e4 LT |
389 | } |
390 | ||
d296d30a | 391 | error = -xfs_set_dmattrs(XFS_I(dentry->d_inode), fsd.fsd_dmevmask, |
6e7f75ea | 392 | fsd.fsd_dmstate); |
1da177e4 | 393 | |
6e7f75ea | 394 | out: |
d9457dc0 | 395 | mnt_drop_write_file(parfilp); |
d296d30a | 396 | dput(dentry); |
6e7f75ea | 397 | return error; |
1da177e4 LT |
398 | } |
399 | ||
400 | STATIC int | |
401 | xfs_attrlist_by_handle( | |
d296d30a CH |
402 | struct file *parfilp, |
403 | void __user *arg) | |
1da177e4 | 404 | { |
d296d30a | 405 | int error = -ENOMEM; |
1da177e4 LT |
406 | attrlist_cursor_kern_t *cursor; |
407 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
d296d30a | 408 | struct dentry *dentry; |
1da177e4 LT |
409 | char *kbuf; |
410 | ||
411 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 412 | return -EPERM; |
1da177e4 | 413 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) |
b474c7ae | 414 | return -EFAULT; |
071c529e DC |
415 | if (al_hreq.buflen < sizeof(struct attrlist) || |
416 | al_hreq.buflen > XATTR_LIST_MAX) | |
b474c7ae | 417 | return -EINVAL; |
1da177e4 | 418 | |
90ad58a8 CH |
419 | /* |
420 | * Reject flags, only allow namespaces. | |
421 | */ | |
422 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
b474c7ae | 423 | return -EINVAL; |
90ad58a8 | 424 | |
d296d30a CH |
425 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
426 | if (IS_ERR(dentry)) | |
427 | return PTR_ERR(dentry); | |
1da177e4 | 428 | |
fdd3ccee DC |
429 | kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP); |
430 | if (!kbuf) | |
431 | goto out_dput; | |
1da177e4 LT |
432 | |
433 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
d296d30a | 434 | error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen, |
739bfb2a | 435 | al_hreq.flags, cursor); |
1da177e4 LT |
436 | if (error) |
437 | goto out_kfree; | |
438 | ||
439 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
440 | error = -EFAULT; | |
441 | ||
fdd3ccee DC |
442 | out_kfree: |
443 | kmem_free(kbuf); | |
444 | out_dput: | |
d296d30a CH |
445 | dput(dentry); |
446 | return error; | |
1da177e4 LT |
447 | } |
448 | ||
28750975 | 449 | int |
1da177e4 | 450 | xfs_attrmulti_attr_get( |
739bfb2a | 451 | struct inode *inode, |
a9273ca5 DC |
452 | unsigned char *name, |
453 | unsigned char __user *ubuf, | |
1da177e4 LT |
454 | __uint32_t *len, |
455 | __uint32_t flags) | |
456 | { | |
a9273ca5 | 457 | unsigned char *kbuf; |
1da177e4 | 458 | int error = EFAULT; |
e8b0ebaa | 459 | |
1da177e4 LT |
460 | if (*len > XATTR_SIZE_MAX) |
461 | return EINVAL; | |
fdd3ccee DC |
462 | kbuf = kmem_zalloc_large(*len, KM_SLEEP); |
463 | if (!kbuf) | |
464 | return ENOMEM; | |
1da177e4 | 465 | |
e8b0ebaa | 466 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
467 | if (error) |
468 | goto out_kfree; | |
469 | ||
470 | if (copy_to_user(ubuf, kbuf, *len)) | |
471 | error = EFAULT; | |
472 | ||
fdd3ccee DC |
473 | out_kfree: |
474 | kmem_free(kbuf); | |
1da177e4 LT |
475 | return error; |
476 | } | |
477 | ||
28750975 | 478 | int |
1da177e4 | 479 | xfs_attrmulti_attr_set( |
739bfb2a | 480 | struct inode *inode, |
a9273ca5 DC |
481 | unsigned char *name, |
482 | const unsigned char __user *ubuf, | |
1da177e4 LT |
483 | __uint32_t len, |
484 | __uint32_t flags) | |
485 | { | |
a9273ca5 | 486 | unsigned char *kbuf; |
1da177e4 LT |
487 | int error = EFAULT; |
488 | ||
739bfb2a | 489 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 LT |
490 | return EPERM; |
491 | if (len > XATTR_SIZE_MAX) | |
492 | return EINVAL; | |
493 | ||
0e639bde LZ |
494 | kbuf = memdup_user(ubuf, len); |
495 | if (IS_ERR(kbuf)) | |
496 | return PTR_ERR(kbuf); | |
e8b0ebaa | 497 | |
739bfb2a | 498 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
1da177e4 | 499 | |
1da177e4 LT |
500 | return error; |
501 | } | |
502 | ||
28750975 | 503 | int |
1da177e4 | 504 | xfs_attrmulti_attr_remove( |
739bfb2a | 505 | struct inode *inode, |
a9273ca5 | 506 | unsigned char *name, |
1da177e4 LT |
507 | __uint32_t flags) |
508 | { | |
739bfb2a | 509 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1da177e4 | 510 | return EPERM; |
739bfb2a | 511 | return xfs_attr_remove(XFS_I(inode), name, flags); |
1da177e4 LT |
512 | } |
513 | ||
514 | STATIC int | |
515 | xfs_attrmulti_by_handle( | |
42a74f20 | 516 | struct file *parfilp, |
d296d30a | 517 | void __user *arg) |
1da177e4 LT |
518 | { |
519 | int error; | |
520 | xfs_attr_multiop_t *ops; | |
521 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 522 | struct dentry *dentry; |
1da177e4 | 523 | unsigned int i, size; |
a9273ca5 | 524 | unsigned char *attr_name; |
1da177e4 LT |
525 | |
526 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 527 | return -EPERM; |
1da177e4 | 528 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) |
b474c7ae | 529 | return -EFAULT; |
1da177e4 | 530 | |
fda168c2 ZW |
531 | /* overflow check */ |
532 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) | |
533 | return -E2BIG; | |
534 | ||
d296d30a CH |
535 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
536 | if (IS_ERR(dentry)) | |
537 | return PTR_ERR(dentry); | |
1da177e4 LT |
538 | |
539 | error = E2BIG; | |
e182f57a | 540 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 541 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 542 | goto out_dput; |
1da177e4 | 543 | |
0e639bde LZ |
544 | ops = memdup_user(am_hreq.ops, size); |
545 | if (IS_ERR(ops)) { | |
b28fd7b5 | 546 | error = -PTR_ERR(ops); |
d296d30a | 547 | goto out_dput; |
0e639bde | 548 | } |
1da177e4 | 549 | |
b28fd7b5 | 550 | error = ENOMEM; |
1da177e4 LT |
551 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); |
552 | if (!attr_name) | |
553 | goto out_kfree_ops; | |
554 | ||
1da177e4 LT |
555 | error = 0; |
556 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 557 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
558 | ops[i].am_attrname, MAXNAMELEN); |
559 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
b28fd7b5 | 560 | error = ERANGE; |
1da177e4 LT |
561 | if (ops[i].am_error < 0) |
562 | break; | |
563 | ||
564 | switch (ops[i].am_opcode) { | |
565 | case ATTR_OP_GET: | |
d296d30a CH |
566 | ops[i].am_error = xfs_attrmulti_attr_get( |
567 | dentry->d_inode, attr_name, | |
568 | ops[i].am_attrvalue, &ops[i].am_length, | |
569 | ops[i].am_flags); | |
1da177e4 LT |
570 | break; |
571 | case ATTR_OP_SET: | |
a561be71 | 572 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
573 | if (ops[i].am_error) |
574 | break; | |
d296d30a CH |
575 | ops[i].am_error = xfs_attrmulti_attr_set( |
576 | dentry->d_inode, attr_name, | |
577 | ops[i].am_attrvalue, ops[i].am_length, | |
578 | ops[i].am_flags); | |
2a79f17e | 579 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
580 | break; |
581 | case ATTR_OP_REMOVE: | |
a561be71 | 582 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
583 | if (ops[i].am_error) |
584 | break; | |
d296d30a CH |
585 | ops[i].am_error = xfs_attrmulti_attr_remove( |
586 | dentry->d_inode, attr_name, | |
587 | ops[i].am_flags); | |
2a79f17e | 588 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
589 | break; |
590 | default: | |
591 | ops[i].am_error = EINVAL; | |
592 | } | |
593 | } | |
594 | ||
595 | if (copy_to_user(am_hreq.ops, ops, size)) | |
b474c7ae | 596 | error = EFAULT; |
1da177e4 LT |
597 | |
598 | kfree(attr_name); | |
599 | out_kfree_ops: | |
600 | kfree(ops); | |
d296d30a CH |
601 | out_dput: |
602 | dput(dentry); | |
1da177e4 LT |
603 | return -error; |
604 | } | |
605 | ||
d5547f9f | 606 | int |
1da177e4 | 607 | xfs_ioc_space( |
993386c1 | 608 | struct xfs_inode *ip, |
f37ea149 | 609 | struct inode *inode, |
1da177e4 LT |
610 | struct file *filp, |
611 | int ioflags, | |
612 | unsigned int cmd, | |
743bb465 | 613 | xfs_flock64_t *bf) |
1da177e4 | 614 | { |
865e9446 CH |
615 | struct xfs_mount *mp = ip->i_mount; |
616 | struct xfs_trans *tp; | |
617 | struct iattr iattr; | |
618 | bool setprealloc = false; | |
619 | bool clrprealloc = false; | |
1da177e4 LT |
620 | int error; |
621 | ||
743bb465 | 622 | /* |
623 | * Only allow the sys admin to reserve space unless | |
624 | * unwritten extents are enabled. | |
625 | */ | |
626 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
627 | !capable(CAP_SYS_ADMIN)) | |
b474c7ae | 628 | return -EPERM; |
743bb465 | 629 | |
f37ea149 | 630 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
b474c7ae | 631 | return -EPERM; |
1da177e4 | 632 | |
ad4a8ac4 | 633 | if (!(filp->f_mode & FMODE_WRITE)) |
b474c7ae | 634 | return -EBADF; |
1da177e4 | 635 | |
f37ea149 | 636 | if (!S_ISREG(inode->i_mode)) |
b474c7ae | 637 | return -EINVAL; |
1da177e4 | 638 | |
d9457dc0 JK |
639 | error = mnt_want_write_file(filp); |
640 | if (error) | |
641 | return error; | |
865e9446 | 642 | |
5f8aca8b | 643 | xfs_ilock(ip, XFS_IOLOCK_EXCL); |
865e9446 CH |
644 | |
645 | switch (bf->l_whence) { | |
646 | case 0: /*SEEK_SET*/ | |
647 | break; | |
648 | case 1: /*SEEK_CUR*/ | |
649 | bf->l_start += filp->f_pos; | |
650 | break; | |
651 | case 2: /*SEEK_END*/ | |
652 | bf->l_start += XFS_ISIZE(ip); | |
653 | break; | |
654 | default: | |
b474c7ae | 655 | error = EINVAL; |
865e9446 CH |
656 | goto out_unlock; |
657 | } | |
658 | ||
659 | /* | |
660 | * length of <= 0 for resv/unresv/zero is invalid. length for | |
661 | * alloc/free is ignored completely and we have no idea what userspace | |
662 | * might have set it to, so set it to zero to allow range | |
663 | * checks to pass. | |
664 | */ | |
665 | switch (cmd) { | |
666 | case XFS_IOC_ZERO_RANGE: | |
667 | case XFS_IOC_RESVSP: | |
668 | case XFS_IOC_RESVSP64: | |
669 | case XFS_IOC_UNRESVSP: | |
670 | case XFS_IOC_UNRESVSP64: | |
671 | if (bf->l_len <= 0) { | |
b474c7ae | 672 | error = EINVAL; |
865e9446 CH |
673 | goto out_unlock; |
674 | } | |
675 | break; | |
676 | default: | |
677 | bf->l_len = 0; | |
678 | break; | |
679 | } | |
680 | ||
681 | if (bf->l_start < 0 || | |
682 | bf->l_start > mp->m_super->s_maxbytes || | |
683 | bf->l_start + bf->l_len < 0 || | |
684 | bf->l_start + bf->l_len >= mp->m_super->s_maxbytes) { | |
b474c7ae | 685 | error = EINVAL; |
865e9446 CH |
686 | goto out_unlock; |
687 | } | |
688 | ||
689 | switch (cmd) { | |
690 | case XFS_IOC_ZERO_RANGE: | |
691 | error = xfs_zero_file_space(ip, bf->l_start, bf->l_len); | |
692 | if (!error) | |
693 | setprealloc = true; | |
694 | break; | |
695 | case XFS_IOC_RESVSP: | |
696 | case XFS_IOC_RESVSP64: | |
697 | error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len, | |
698 | XFS_BMAPI_PREALLOC); | |
699 | if (!error) | |
700 | setprealloc = true; | |
701 | break; | |
702 | case XFS_IOC_UNRESVSP: | |
703 | case XFS_IOC_UNRESVSP64: | |
704 | error = xfs_free_file_space(ip, bf->l_start, bf->l_len); | |
705 | break; | |
706 | case XFS_IOC_ALLOCSP: | |
707 | case XFS_IOC_ALLOCSP64: | |
708 | case XFS_IOC_FREESP: | |
709 | case XFS_IOC_FREESP64: | |
710 | if (bf->l_start > XFS_ISIZE(ip)) { | |
711 | error = xfs_alloc_file_space(ip, XFS_ISIZE(ip), | |
712 | bf->l_start - XFS_ISIZE(ip), 0); | |
713 | if (error) | |
714 | goto out_unlock; | |
715 | } | |
716 | ||
717 | iattr.ia_valid = ATTR_SIZE; | |
718 | iattr.ia_size = bf->l_start; | |
719 | ||
720 | error = xfs_setattr_size(ip, &iattr); | |
721 | if (!error) | |
722 | clrprealloc = true; | |
723 | break; | |
724 | default: | |
725 | ASSERT(0); | |
b474c7ae | 726 | error = EINVAL; |
865e9446 CH |
727 | } |
728 | ||
729 | if (error) | |
730 | goto out_unlock; | |
731 | ||
732 | tp = xfs_trans_alloc(mp, XFS_TRANS_WRITEID); | |
733 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_writeid, 0, 0); | |
734 | if (error) { | |
735 | xfs_trans_cancel(tp, 0); | |
736 | goto out_unlock; | |
737 | } | |
738 | ||
739 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
740 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
741 | ||
742 | if (!(ioflags & IO_INVIS)) { | |
743 | ip->i_d.di_mode &= ~S_ISUID; | |
744 | if (ip->i_d.di_mode & S_IXGRP) | |
745 | ip->i_d.di_mode &= ~S_ISGID; | |
746 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); | |
747 | } | |
748 | ||
749 | if (setprealloc) | |
750 | ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC; | |
751 | else if (clrprealloc) | |
752 | ip->i_d.di_flags &= ~XFS_DIFLAG_PREALLOC; | |
753 | ||
754 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
755 | if (filp->f_flags & O_DSYNC) | |
756 | xfs_trans_set_sync(tp); | |
757 | error = xfs_trans_commit(tp, 0); | |
758 | ||
759 | out_unlock: | |
5f8aca8b | 760 | xfs_iunlock(ip, XFS_IOLOCK_EXCL); |
d9457dc0 | 761 | mnt_drop_write_file(filp); |
1da177e4 LT |
762 | return -error; |
763 | } | |
764 | ||
765 | STATIC int | |
766 | xfs_ioc_bulkstat( | |
767 | xfs_mount_t *mp, | |
768 | unsigned int cmd, | |
769 | void __user *arg) | |
770 | { | |
771 | xfs_fsop_bulkreq_t bulkreq; | |
772 | int count; /* # of records returned */ | |
773 | xfs_ino_t inlast; /* last inode number */ | |
774 | int done; | |
775 | int error; | |
776 | ||
777 | /* done = 1 if there are more stats to get and if bulkstat */ | |
778 | /* should be called again (unused here, but used in dmapi) */ | |
779 | ||
780 | if (!capable(CAP_SYS_ADMIN)) | |
781 | return -EPERM; | |
782 | ||
783 | if (XFS_FORCED_SHUTDOWN(mp)) | |
b474c7ae | 784 | return -EIO; |
1da177e4 LT |
785 | |
786 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
b474c7ae | 787 | return -EFAULT; |
1da177e4 LT |
788 | |
789 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
b474c7ae | 790 | return -EFAULT; |
1da177e4 LT |
791 | |
792 | if ((count = bulkreq.icount) <= 0) | |
b474c7ae | 793 | return -EINVAL; |
1da177e4 | 794 | |
cd57e594 | 795 | if (bulkreq.ubuffer == NULL) |
b474c7ae | 796 | return -EINVAL; |
cd57e594 | 797 | |
1da177e4 LT |
798 | if (cmd == XFS_IOC_FSINUMBERS) |
799 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 800 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 LT |
801 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
802 | error = xfs_bulkstat_single(mp, &inlast, | |
803 | bulkreq.ubuffer, &done); | |
cd57e594 | 804 | else /* XFS_IOC_FSBULKSTAT */ |
7dce11db CH |
805 | error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, |
806 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
807 | &done); | |
1da177e4 LT |
808 | |
809 | if (error) | |
810 | return -error; | |
811 | ||
812 | if (bulkreq.ocount != NULL) { | |
813 | if (copy_to_user(bulkreq.lastip, &inlast, | |
814 | sizeof(xfs_ino_t))) | |
b474c7ae | 815 | return -EFAULT; |
1da177e4 LT |
816 | |
817 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
b474c7ae | 818 | return -EFAULT; |
1da177e4 LT |
819 | } |
820 | ||
821 | return 0; | |
822 | } | |
823 | ||
824 | STATIC int | |
825 | xfs_ioc_fsgeometry_v1( | |
826 | xfs_mount_t *mp, | |
827 | void __user *arg) | |
828 | { | |
eeb2036b | 829 | xfs_fsop_geom_t fsgeo; |
1da177e4 LT |
830 | int error; |
831 | ||
eeb2036b | 832 | error = xfs_fs_geometry(mp, &fsgeo, 3); |
1da177e4 LT |
833 | if (error) |
834 | return -error; | |
835 | ||
eeb2036b AE |
836 | /* |
837 | * Caller should have passed an argument of type | |
838 | * xfs_fsop_geom_v1_t. This is a proper subset of the | |
839 | * xfs_fsop_geom_t that xfs_fs_geometry() fills in. | |
840 | */ | |
841 | if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t))) | |
b474c7ae | 842 | return -EFAULT; |
1da177e4 LT |
843 | return 0; |
844 | } | |
845 | ||
846 | STATIC int | |
847 | xfs_ioc_fsgeometry( | |
848 | xfs_mount_t *mp, | |
849 | void __user *arg) | |
850 | { | |
851 | xfs_fsop_geom_t fsgeo; | |
852 | int error; | |
853 | ||
854 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
855 | if (error) | |
856 | return -error; | |
857 | ||
858 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
b474c7ae | 859 | return -EFAULT; |
1da177e4 LT |
860 | return 0; |
861 | } | |
862 | ||
863 | /* | |
864 | * Linux extended inode flags interface. | |
865 | */ | |
1da177e4 LT |
866 | |
867 | STATIC unsigned int | |
868 | xfs_merge_ioc_xflags( | |
869 | unsigned int flags, | |
870 | unsigned int start) | |
871 | { | |
872 | unsigned int xflags = start; | |
873 | ||
39058a0e | 874 | if (flags & FS_IMMUTABLE_FL) |
1da177e4 LT |
875 | xflags |= XFS_XFLAG_IMMUTABLE; |
876 | else | |
877 | xflags &= ~XFS_XFLAG_IMMUTABLE; | |
39058a0e | 878 | if (flags & FS_APPEND_FL) |
1da177e4 LT |
879 | xflags |= XFS_XFLAG_APPEND; |
880 | else | |
881 | xflags &= ~XFS_XFLAG_APPEND; | |
39058a0e | 882 | if (flags & FS_SYNC_FL) |
1da177e4 LT |
883 | xflags |= XFS_XFLAG_SYNC; |
884 | else | |
885 | xflags &= ~XFS_XFLAG_SYNC; | |
39058a0e | 886 | if (flags & FS_NOATIME_FL) |
1da177e4 LT |
887 | xflags |= XFS_XFLAG_NOATIME; |
888 | else | |
889 | xflags &= ~XFS_XFLAG_NOATIME; | |
39058a0e | 890 | if (flags & FS_NODUMP_FL) |
1da177e4 LT |
891 | xflags |= XFS_XFLAG_NODUMP; |
892 | else | |
893 | xflags &= ~XFS_XFLAG_NODUMP; | |
894 | ||
895 | return xflags; | |
896 | } | |
897 | ||
898 | STATIC unsigned int | |
899 | xfs_di2lxflags( | |
900 | __uint16_t di_flags) | |
901 | { | |
902 | unsigned int flags = 0; | |
903 | ||
904 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 905 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 906 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 907 | flags |= FS_APPEND_FL; |
1da177e4 | 908 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 909 | flags |= FS_SYNC_FL; |
1da177e4 | 910 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 911 | flags |= FS_NOATIME_FL; |
1da177e4 | 912 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 913 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
914 | return flags; |
915 | } | |
916 | ||
c83bfab1 CH |
917 | STATIC int |
918 | xfs_ioc_fsgetxattr( | |
919 | xfs_inode_t *ip, | |
920 | int attr, | |
921 | void __user *arg) | |
922 | { | |
923 | struct fsxattr fa; | |
924 | ||
a122eb2f DR |
925 | memset(&fa, 0, sizeof(struct fsxattr)); |
926 | ||
c83bfab1 CH |
927 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
928 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
929 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
6743099c | 930 | fa.fsx_projid = xfs_get_projid(ip); |
c83bfab1 CH |
931 | |
932 | if (attr) { | |
933 | if (ip->i_afp) { | |
934 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
935 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
936 | sizeof(xfs_bmbt_rec_t); | |
937 | else | |
938 | fa.fsx_nextents = ip->i_d.di_anextents; | |
939 | } else | |
940 | fa.fsx_nextents = 0; | |
941 | } else { | |
942 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
943 | fa.fsx_nextents = ip->i_df.if_bytes / | |
944 | sizeof(xfs_bmbt_rec_t); | |
945 | else | |
946 | fa.fsx_nextents = ip->i_d.di_nextents; | |
947 | } | |
948 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
949 | ||
950 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
951 | return -EFAULT; | |
952 | return 0; | |
953 | } | |
954 | ||
25fe55e8 CH |
955 | STATIC void |
956 | xfs_set_diflags( | |
957 | struct xfs_inode *ip, | |
958 | unsigned int xflags) | |
959 | { | |
960 | unsigned int di_flags; | |
961 | ||
962 | /* can't set PREALLOC this way, just preserve it */ | |
963 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
964 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
965 | di_flags |= XFS_DIFLAG_IMMUTABLE; | |
966 | if (xflags & XFS_XFLAG_APPEND) | |
967 | di_flags |= XFS_DIFLAG_APPEND; | |
968 | if (xflags & XFS_XFLAG_SYNC) | |
969 | di_flags |= XFS_DIFLAG_SYNC; | |
970 | if (xflags & XFS_XFLAG_NOATIME) | |
971 | di_flags |= XFS_DIFLAG_NOATIME; | |
972 | if (xflags & XFS_XFLAG_NODUMP) | |
973 | di_flags |= XFS_DIFLAG_NODUMP; | |
974 | if (xflags & XFS_XFLAG_PROJINHERIT) | |
975 | di_flags |= XFS_DIFLAG_PROJINHERIT; | |
976 | if (xflags & XFS_XFLAG_NODEFRAG) | |
977 | di_flags |= XFS_DIFLAG_NODEFRAG; | |
978 | if (xflags & XFS_XFLAG_FILESTREAM) | |
979 | di_flags |= XFS_DIFLAG_FILESTREAM; | |
abbede1b | 980 | if (S_ISDIR(ip->i_d.di_mode)) { |
25fe55e8 CH |
981 | if (xflags & XFS_XFLAG_RTINHERIT) |
982 | di_flags |= XFS_DIFLAG_RTINHERIT; | |
983 | if (xflags & XFS_XFLAG_NOSYMLINKS) | |
984 | di_flags |= XFS_DIFLAG_NOSYMLINKS; | |
985 | if (xflags & XFS_XFLAG_EXTSZINHERIT) | |
986 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; | |
abbede1b | 987 | } else if (S_ISREG(ip->i_d.di_mode)) { |
25fe55e8 CH |
988 | if (xflags & XFS_XFLAG_REALTIME) |
989 | di_flags |= XFS_DIFLAG_REALTIME; | |
990 | if (xflags & XFS_XFLAG_EXTSIZE) | |
991 | di_flags |= XFS_DIFLAG_EXTSIZE; | |
992 | } | |
993 | ||
994 | ip->i_d.di_flags = di_flags; | |
995 | } | |
996 | ||
f13fae2d CH |
997 | STATIC void |
998 | xfs_diflags_to_linux( | |
999 | struct xfs_inode *ip) | |
1000 | { | |
e4f75291 | 1001 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
1002 | unsigned int xflags = xfs_ip2xflags(ip); |
1003 | ||
1004 | if (xflags & XFS_XFLAG_IMMUTABLE) | |
1005 | inode->i_flags |= S_IMMUTABLE; | |
1006 | else | |
1007 | inode->i_flags &= ~S_IMMUTABLE; | |
1008 | if (xflags & XFS_XFLAG_APPEND) | |
1009 | inode->i_flags |= S_APPEND; | |
1010 | else | |
1011 | inode->i_flags &= ~S_APPEND; | |
1012 | if (xflags & XFS_XFLAG_SYNC) | |
1013 | inode->i_flags |= S_SYNC; | |
1014 | else | |
1015 | inode->i_flags &= ~S_SYNC; | |
1016 | if (xflags & XFS_XFLAG_NOATIME) | |
1017 | inode->i_flags |= S_NOATIME; | |
1018 | else | |
1019 | inode->i_flags &= ~S_NOATIME; | |
1020 | } | |
25fe55e8 CH |
1021 | |
1022 | #define FSX_PROJID 1 | |
1023 | #define FSX_EXTSIZE 2 | |
1024 | #define FSX_XFLAGS 4 | |
1025 | #define FSX_NONBLOCK 8 | |
1026 | ||
1027 | STATIC int | |
1028 | xfs_ioctl_setattr( | |
1029 | xfs_inode_t *ip, | |
1030 | struct fsxattr *fa, | |
1031 | int mask) | |
1032 | { | |
1033 | struct xfs_mount *mp = ip->i_mount; | |
1034 | struct xfs_trans *tp; | |
1035 | unsigned int lock_flags = 0; | |
7d095257 | 1036 | struct xfs_dquot *udqp = NULL; |
92f8ff73 | 1037 | struct xfs_dquot *pdqp = NULL; |
25fe55e8 CH |
1038 | struct xfs_dquot *olddquot = NULL; |
1039 | int code; | |
1040 | ||
cca28fb8 | 1041 | trace_xfs_ioctl_setattr(ip); |
25fe55e8 CH |
1042 | |
1043 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
b474c7ae | 1044 | return EROFS; |
25fe55e8 | 1045 | if (XFS_FORCED_SHUTDOWN(mp)) |
b474c7ae | 1046 | return EIO; |
25fe55e8 | 1047 | |
23963e54 | 1048 | /* |
6743099c | 1049 | * Disallow 32bit project ids when projid32bit feature is not enabled. |
23963e54 | 1050 | */ |
6743099c AM |
1051 | if ((mask & FSX_PROJID) && (fa->fsx_projid > (__uint16_t)-1) && |
1052 | !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) | |
b474c7ae | 1053 | return EINVAL; |
23963e54 | 1054 | |
25fe55e8 CH |
1055 | /* |
1056 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
1057 | * before we start any other transactions. Trying to do this later | |
1058 | * is messy. We don't care to take a readlock to look at the ids | |
1059 | * in inode here, because we can't hold it across the trans_reserve. | |
1060 | * If the IDs do change before we take the ilock, we're covered | |
1061 | * because the i_*dquot fields will get updated anyway. | |
1062 | */ | |
1063 | if (XFS_IS_QUOTA_ON(mp) && (mask & FSX_PROJID)) { | |
7d095257 | 1064 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
25fe55e8 | 1065 | ip->i_d.di_gid, fa->fsx_projid, |
92f8ff73 | 1066 | XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp); |
25fe55e8 CH |
1067 | if (code) |
1068 | return code; | |
1069 | } | |
1070 | ||
1071 | /* | |
1072 | * For the other attributes, we acquire the inode lock and | |
1073 | * first do an error checking pass. | |
1074 | */ | |
1075 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
3d3c8b52 | 1076 | code = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); |
25fe55e8 CH |
1077 | if (code) |
1078 | goto error_return; | |
1079 | ||
1080 | lock_flags = XFS_ILOCK_EXCL; | |
1081 | xfs_ilock(ip, lock_flags); | |
1082 | ||
1083 | /* | |
1084 | * CAP_FOWNER overrides the following restrictions: | |
1085 | * | |
1086 | * The user ID of the calling process must be equal | |
1087 | * to the file owner ID, except in cases where the | |
1088 | * CAP_FSETID capability is applicable. | |
1089 | */ | |
fd5e2aa8 | 1090 | if (!inode_owner_or_capable(VFS_I(ip))) { |
b474c7ae | 1091 | code = EPERM; |
25fe55e8 CH |
1092 | goto error_return; |
1093 | } | |
1094 | ||
1095 | /* | |
1096 | * Do a quota reservation only if projid is actually going to change. | |
fd5e2aa8 DE |
1097 | * Only allow changing of projid from init_user_ns since it is a |
1098 | * non user namespace aware identifier. | |
25fe55e8 CH |
1099 | */ |
1100 | if (mask & FSX_PROJID) { | |
fd5e2aa8 | 1101 | if (current_user_ns() != &init_user_ns) { |
b474c7ae | 1102 | code = EINVAL; |
fd5e2aa8 DE |
1103 | goto error_return; |
1104 | } | |
1105 | ||
7d095257 CH |
1106 | if (XFS_IS_QUOTA_RUNNING(mp) && |
1107 | XFS_IS_PQUOTA_ON(mp) && | |
6743099c | 1108 | xfs_get_projid(ip) != fa->fsx_projid) { |
25fe55e8 | 1109 | ASSERT(tp); |
92f8ff73 CS |
1110 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, |
1111 | pdqp, capable(CAP_FOWNER) ? | |
25fe55e8 CH |
1112 | XFS_QMOPT_FORCE_RES : 0); |
1113 | if (code) /* out of quota */ | |
1114 | goto error_return; | |
1115 | } | |
1116 | } | |
1117 | ||
1118 | if (mask & FSX_EXTSIZE) { | |
1119 | /* | |
1120 | * Can't change extent size if any extents are allocated. | |
1121 | */ | |
1122 | if (ip->i_d.di_nextents && | |
1123 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != | |
1124 | fa->fsx_extsize)) { | |
b474c7ae | 1125 | code = EINVAL; /* EFBIG? */ |
25fe55e8 CH |
1126 | goto error_return; |
1127 | } | |
1128 | ||
1129 | /* | |
1130 | * Extent size must be a multiple of the appropriate block | |
5315837d DC |
1131 | * size, if set at all. It must also be smaller than the |
1132 | * maximum extent size supported by the filesystem. | |
1133 | * | |
1134 | * Also, for non-realtime files, limit the extent size hint to | |
1135 | * half the size of the AGs in the filesystem so alignment | |
1136 | * doesn't result in extents larger than an AG. | |
25fe55e8 CH |
1137 | */ |
1138 | if (fa->fsx_extsize != 0) { | |
5315837d DC |
1139 | xfs_extlen_t size; |
1140 | xfs_fsblock_t extsize_fsb; | |
1141 | ||
1142 | extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); | |
1143 | if (extsize_fsb > MAXEXTLEN) { | |
b474c7ae | 1144 | code = EINVAL; |
5315837d DC |
1145 | goto error_return; |
1146 | } | |
25fe55e8 CH |
1147 | |
1148 | if (XFS_IS_REALTIME_INODE(ip) || | |
1149 | ((mask & FSX_XFLAGS) && | |
1150 | (fa->fsx_xflags & XFS_XFLAG_REALTIME))) { | |
1151 | size = mp->m_sb.sb_rextsize << | |
1152 | mp->m_sb.sb_blocklog; | |
1153 | } else { | |
1154 | size = mp->m_sb.sb_blocksize; | |
5315837d | 1155 | if (extsize_fsb > mp->m_sb.sb_agblocks / 2) { |
b474c7ae | 1156 | code = EINVAL; |
5315837d DC |
1157 | goto error_return; |
1158 | } | |
25fe55e8 CH |
1159 | } |
1160 | ||
1161 | if (fa->fsx_extsize % size) { | |
b474c7ae | 1162 | code = EINVAL; |
25fe55e8 CH |
1163 | goto error_return; |
1164 | } | |
1165 | } | |
1166 | } | |
1167 | ||
1168 | ||
1169 | if (mask & FSX_XFLAGS) { | |
1170 | /* | |
1171 | * Can't change realtime flag if any extents are allocated. | |
1172 | */ | |
1173 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
1174 | (XFS_IS_REALTIME_INODE(ip)) != | |
1175 | (fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
b474c7ae | 1176 | code = EINVAL; /* EFBIG? */ |
25fe55e8 CH |
1177 | goto error_return; |
1178 | } | |
1179 | ||
1180 | /* | |
1181 | * If realtime flag is set then must have realtime data. | |
1182 | */ | |
1183 | if ((fa->fsx_xflags & XFS_XFLAG_REALTIME)) { | |
1184 | if ((mp->m_sb.sb_rblocks == 0) || | |
1185 | (mp->m_sb.sb_rextsize == 0) || | |
1186 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) { | |
b474c7ae | 1187 | code = EINVAL; |
25fe55e8 CH |
1188 | goto error_return; |
1189 | } | |
1190 | } | |
1191 | ||
1192 | /* | |
1193 | * Can't modify an immutable/append-only file unless | |
1194 | * we have appropriate permission. | |
1195 | */ | |
1196 | if ((ip->i_d.di_flags & | |
1197 | (XFS_DIFLAG_IMMUTABLE|XFS_DIFLAG_APPEND) || | |
1198 | (fa->fsx_xflags & | |
1199 | (XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND))) && | |
1200 | !capable(CAP_LINUX_IMMUTABLE)) { | |
b474c7ae | 1201 | code = EPERM; |
25fe55e8 CH |
1202 | goto error_return; |
1203 | } | |
1204 | } | |
1205 | ||
ddc3415a | 1206 | xfs_trans_ijoin(tp, ip, 0); |
25fe55e8 CH |
1207 | |
1208 | /* | |
1209 | * Change file ownership. Must be the owner or privileged. | |
25fe55e8 CH |
1210 | */ |
1211 | if (mask & FSX_PROJID) { | |
1212 | /* | |
1213 | * CAP_FSETID overrides the following restrictions: | |
1214 | * | |
1215 | * The set-user-ID and set-group-ID bits of a file will be | |
1216 | * cleared upon successful return from chown() | |
1217 | */ | |
1218 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && | |
23adbe12 | 1219 | !capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID)) |
25fe55e8 CH |
1220 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); |
1221 | ||
1222 | /* | |
1223 | * Change the ownerships and register quota modifications | |
1224 | * in the transaction. | |
1225 | */ | |
6743099c | 1226 | if (xfs_get_projid(ip) != fa->fsx_projid) { |
7d095257 CH |
1227 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { |
1228 | olddquot = xfs_qm_vop_chown(tp, ip, | |
92f8ff73 | 1229 | &ip->i_pdquot, pdqp); |
25fe55e8 | 1230 | } |
263997a6 | 1231 | ASSERT(ip->i_d.di_version > 1); |
6743099c | 1232 | xfs_set_projid(ip, fa->fsx_projid); |
25fe55e8 CH |
1233 | } |
1234 | ||
1235 | } | |
1236 | ||
1237 | if (mask & FSX_EXTSIZE) | |
1238 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
f13fae2d | 1239 | if (mask & FSX_XFLAGS) { |
25fe55e8 | 1240 | xfs_set_diflags(ip, fa->fsx_xflags); |
f13fae2d CH |
1241 | xfs_diflags_to_linux(ip); |
1242 | } | |
25fe55e8 | 1243 | |
dcd79a14 | 1244 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); |
25fe55e8 | 1245 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
25fe55e8 CH |
1246 | |
1247 | XFS_STATS_INC(xs_ig_attrchg); | |
1248 | ||
1249 | /* | |
1250 | * If this is a synchronous mount, make sure that the | |
1251 | * transaction goes to disk before returning to the user. | |
1252 | * This is slightly sub-optimal in that truncates require | |
1253 | * two sync transactions instead of one for wsync filesystems. | |
1254 | * One for the truncate and one for the timestamps since we | |
1255 | * don't want to change the timestamps unless we're sure the | |
1256 | * truncate worked. Truncates are less than 1% of the laddis | |
1257 | * mix so this probably isn't worth the trouble to optimize. | |
1258 | */ | |
1259 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1260 | xfs_trans_set_sync(tp); | |
1261 | code = xfs_trans_commit(tp, 0); | |
1262 | xfs_iunlock(ip, lock_flags); | |
1263 | ||
1264 | /* | |
1265 | * Release any dquot(s) the inode had kept before chown. | |
1266 | */ | |
7d095257 CH |
1267 | xfs_qm_dqrele(olddquot); |
1268 | xfs_qm_dqrele(udqp); | |
92f8ff73 | 1269 | xfs_qm_dqrele(pdqp); |
25fe55e8 | 1270 | |
288699fe | 1271 | return code; |
25fe55e8 CH |
1272 | |
1273 | error_return: | |
7d095257 | 1274 | xfs_qm_dqrele(udqp); |
92f8ff73 | 1275 | xfs_qm_dqrele(pdqp); |
25fe55e8 CH |
1276 | xfs_trans_cancel(tp, 0); |
1277 | if (lock_flags) | |
1278 | xfs_iunlock(ip, lock_flags); | |
1279 | return code; | |
1280 | } | |
1281 | ||
1da177e4 | 1282 | STATIC int |
df26cfe8 | 1283 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1284 | xfs_inode_t *ip, |
1285 | struct file *filp, | |
1da177e4 LT |
1286 | void __user *arg) |
1287 | { | |
1288 | struct fsxattr fa; | |
25fe55e8 | 1289 | unsigned int mask; |
d9457dc0 | 1290 | int error; |
df26cfe8 LM |
1291 | |
1292 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1293 | return -EFAULT; | |
1da177e4 | 1294 | |
25fe55e8 | 1295 | mask = FSX_XFLAGS | FSX_EXTSIZE | FSX_PROJID; |
df26cfe8 | 1296 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 | 1297 | mask |= FSX_NONBLOCK; |
1da177e4 | 1298 | |
d9457dc0 JK |
1299 | error = mnt_want_write_file(filp); |
1300 | if (error) | |
1301 | return error; | |
1302 | error = xfs_ioctl_setattr(ip, &fa, mask); | |
1303 | mnt_drop_write_file(filp); | |
1304 | return -error; | |
df26cfe8 | 1305 | } |
1da177e4 | 1306 | |
df26cfe8 LM |
1307 | STATIC int |
1308 | xfs_ioc_getxflags( | |
1309 | xfs_inode_t *ip, | |
1310 | void __user *arg) | |
1311 | { | |
1312 | unsigned int flags; | |
1da177e4 | 1313 | |
df26cfe8 LM |
1314 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1315 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1316 | return -EFAULT; | |
1317 | return 0; | |
1318 | } | |
1da177e4 | 1319 | |
df26cfe8 LM |
1320 | STATIC int |
1321 | xfs_ioc_setxflags( | |
1322 | xfs_inode_t *ip, | |
1323 | struct file *filp, | |
1324 | void __user *arg) | |
1325 | { | |
25fe55e8 | 1326 | struct fsxattr fa; |
df26cfe8 | 1327 | unsigned int flags; |
25fe55e8 | 1328 | unsigned int mask; |
d9457dc0 | 1329 | int error; |
1da177e4 | 1330 | |
df26cfe8 LM |
1331 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1332 | return -EFAULT; | |
1da177e4 | 1333 | |
df26cfe8 LM |
1334 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1335 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1336 | FS_SYNC_FL)) | |
1337 | return -EOPNOTSUPP; | |
1da177e4 | 1338 | |
25fe55e8 | 1339 | mask = FSX_XFLAGS; |
df26cfe8 | 1340 | if (filp->f_flags & (O_NDELAY|O_NONBLOCK)) |
25fe55e8 CH |
1341 | mask |= FSX_NONBLOCK; |
1342 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); | |
1da177e4 | 1343 | |
d9457dc0 JK |
1344 | error = mnt_want_write_file(filp); |
1345 | if (error) | |
1346 | return error; | |
1347 | error = xfs_ioctl_setattr(ip, &fa, mask); | |
1348 | mnt_drop_write_file(filp); | |
1349 | return -error; | |
1da177e4 LT |
1350 | } |
1351 | ||
8a7141a8 ES |
1352 | STATIC int |
1353 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) | |
1354 | { | |
1355 | struct getbmap __user *base = *ap; | |
1356 | ||
1357 | /* copy only getbmap portion (not getbmapx) */ | |
1358 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
b474c7ae | 1359 | return EFAULT; |
8a7141a8 ES |
1360 | |
1361 | *ap += sizeof(struct getbmap); | |
1362 | return 0; | |
1363 | } | |
1364 | ||
1da177e4 LT |
1365 | STATIC int |
1366 | xfs_ioc_getbmap( | |
993386c1 | 1367 | struct xfs_inode *ip, |
1da177e4 LT |
1368 | int ioflags, |
1369 | unsigned int cmd, | |
1370 | void __user *arg) | |
1371 | { | |
8a7141a8 | 1372 | struct getbmapx bmx; |
1da177e4 LT |
1373 | int error; |
1374 | ||
8a7141a8 | 1375 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
b474c7ae | 1376 | return -EFAULT; |
1da177e4 | 1377 | |
8a7141a8 | 1378 | if (bmx.bmv_count < 2) |
b474c7ae | 1379 | return -EINVAL; |
1da177e4 | 1380 | |
8a7141a8 | 1381 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
1da177e4 | 1382 | if (ioflags & IO_INVIS) |
8a7141a8 | 1383 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1384 | |
8a7141a8 ES |
1385 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
1386 | (struct getbmap *)arg+1); | |
1da177e4 LT |
1387 | if (error) |
1388 | return -error; | |
1389 | ||
8a7141a8 ES |
1390 | /* copy back header - only size of getbmap */ |
1391 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
b474c7ae | 1392 | return -EFAULT; |
1da177e4 LT |
1393 | return 0; |
1394 | } | |
1395 | ||
8a7141a8 ES |
1396 | STATIC int |
1397 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) | |
1398 | { | |
1399 | struct getbmapx __user *base = *ap; | |
1400 | ||
1401 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
b474c7ae | 1402 | return EFAULT; |
8a7141a8 ES |
1403 | |
1404 | *ap += sizeof(struct getbmapx); | |
1405 | return 0; | |
1406 | } | |
1407 | ||
1da177e4 LT |
1408 | STATIC int |
1409 | xfs_ioc_getbmapx( | |
993386c1 | 1410 | struct xfs_inode *ip, |
1da177e4 LT |
1411 | void __user *arg) |
1412 | { | |
1413 | struct getbmapx bmx; | |
1da177e4 LT |
1414 | int error; |
1415 | ||
1416 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
b474c7ae | 1417 | return -EFAULT; |
1da177e4 LT |
1418 | |
1419 | if (bmx.bmv_count < 2) | |
b474c7ae | 1420 | return -EINVAL; |
1da177e4 | 1421 | |
8a7141a8 | 1422 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
b474c7ae | 1423 | return -EINVAL; |
1da177e4 | 1424 | |
8a7141a8 ES |
1425 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
1426 | (struct getbmapx *)arg+1); | |
1da177e4 LT |
1427 | if (error) |
1428 | return -error; | |
1429 | ||
8a7141a8 ES |
1430 | /* copy back header */ |
1431 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
b474c7ae | 1432 | return -EFAULT; |
1da177e4 LT |
1433 | |
1434 | return 0; | |
1435 | } | |
df26cfe8 | 1436 | |
a133d952 DC |
1437 | int |
1438 | xfs_ioc_swapext( | |
1439 | xfs_swapext_t *sxp) | |
1440 | { | |
1441 | xfs_inode_t *ip, *tip; | |
1442 | struct fd f, tmp; | |
1443 | int error = 0; | |
1444 | ||
1445 | /* Pull information for the target fd */ | |
1446 | f = fdget((int)sxp->sx_fdtarget); | |
1447 | if (!f.file) { | |
b474c7ae | 1448 | error = EINVAL; |
a133d952 DC |
1449 | goto out; |
1450 | } | |
1451 | ||
1452 | if (!(f.file->f_mode & FMODE_WRITE) || | |
1453 | !(f.file->f_mode & FMODE_READ) || | |
1454 | (f.file->f_flags & O_APPEND)) { | |
b474c7ae | 1455 | error = EBADF; |
a133d952 DC |
1456 | goto out_put_file; |
1457 | } | |
1458 | ||
1459 | tmp = fdget((int)sxp->sx_fdtmp); | |
1460 | if (!tmp.file) { | |
b474c7ae | 1461 | error = EINVAL; |
a133d952 DC |
1462 | goto out_put_file; |
1463 | } | |
1464 | ||
1465 | if (!(tmp.file->f_mode & FMODE_WRITE) || | |
1466 | !(tmp.file->f_mode & FMODE_READ) || | |
1467 | (tmp.file->f_flags & O_APPEND)) { | |
b474c7ae | 1468 | error = EBADF; |
a133d952 DC |
1469 | goto out_put_tmp_file; |
1470 | } | |
1471 | ||
1472 | if (IS_SWAPFILE(file_inode(f.file)) || | |
1473 | IS_SWAPFILE(file_inode(tmp.file))) { | |
b474c7ae | 1474 | error = EINVAL; |
a133d952 DC |
1475 | goto out_put_tmp_file; |
1476 | } | |
1477 | ||
1478 | ip = XFS_I(file_inode(f.file)); | |
1479 | tip = XFS_I(file_inode(tmp.file)); | |
1480 | ||
1481 | if (ip->i_mount != tip->i_mount) { | |
b474c7ae | 1482 | error = EINVAL; |
a133d952 DC |
1483 | goto out_put_tmp_file; |
1484 | } | |
1485 | ||
1486 | if (ip->i_ino == tip->i_ino) { | |
b474c7ae | 1487 | error = EINVAL; |
a133d952 DC |
1488 | goto out_put_tmp_file; |
1489 | } | |
1490 | ||
1491 | if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { | |
b474c7ae | 1492 | error = EIO; |
a133d952 DC |
1493 | goto out_put_tmp_file; |
1494 | } | |
1495 | ||
1496 | error = xfs_swap_extents(ip, tip, sxp); | |
1497 | ||
1498 | out_put_tmp_file: | |
1499 | fdput(tmp); | |
1500 | out_put_file: | |
1501 | fdput(f); | |
1502 | out: | |
1503 | return error; | |
1504 | } | |
1505 | ||
4d4be482 CH |
1506 | /* |
1507 | * Note: some of the ioctl's return positive numbers as a | |
1508 | * byte count indicating success, such as readlink_by_handle. | |
1509 | * So we don't "sign flip" like most other routines. This means | |
1510 | * true errors need to be returned as a negative value. | |
1511 | */ | |
1512 | long | |
1513 | xfs_file_ioctl( | |
df26cfe8 | 1514 | struct file *filp, |
df26cfe8 | 1515 | unsigned int cmd, |
4d4be482 | 1516 | unsigned long p) |
df26cfe8 | 1517 | { |
496ad9aa | 1518 | struct inode *inode = file_inode(filp); |
4d4be482 CH |
1519 | struct xfs_inode *ip = XFS_I(inode); |
1520 | struct xfs_mount *mp = ip->i_mount; | |
1521 | void __user *arg = (void __user *)p; | |
1522 | int ioflags = 0; | |
df26cfe8 LM |
1523 | int error; |
1524 | ||
4d4be482 CH |
1525 | if (filp->f_mode & FMODE_NOCMTIME) |
1526 | ioflags |= IO_INVIS; | |
df26cfe8 | 1527 | |
cca28fb8 | 1528 | trace_xfs_file_ioctl(ip); |
4d4be482 CH |
1529 | |
1530 | switch (cmd) { | |
a46db608 CH |
1531 | case FITRIM: |
1532 | return xfs_ioc_trim(mp, arg); | |
df26cfe8 LM |
1533 | case XFS_IOC_ALLOCSP: |
1534 | case XFS_IOC_FREESP: | |
1535 | case XFS_IOC_RESVSP: | |
1536 | case XFS_IOC_UNRESVSP: | |
1537 | case XFS_IOC_ALLOCSP64: | |
1538 | case XFS_IOC_FREESP64: | |
1539 | case XFS_IOC_RESVSP64: | |
44722352 DC |
1540 | case XFS_IOC_UNRESVSP64: |
1541 | case XFS_IOC_ZERO_RANGE: { | |
743bb465 | 1542 | xfs_flock64_t bf; |
df26cfe8 | 1543 | |
743bb465 | 1544 | if (copy_from_user(&bf, arg, sizeof(bf))) |
b474c7ae | 1545 | return -EFAULT; |
743bb465 | 1546 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); |
1547 | } | |
df26cfe8 LM |
1548 | case XFS_IOC_DIOINFO: { |
1549 | struct dioattr da; | |
1550 | xfs_buftarg_t *target = | |
1551 | XFS_IS_REALTIME_INODE(ip) ? | |
1552 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1553 | ||
7c71ee78 | 1554 | da.d_mem = da.d_miniosz = target->bt_logical_sectorsize; |
df26cfe8 LM |
1555 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); |
1556 | ||
1557 | if (copy_to_user(arg, &da, sizeof(da))) | |
b474c7ae | 1558 | return -EFAULT; |
df26cfe8 LM |
1559 | return 0; |
1560 | } | |
1561 | ||
1562 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1563 | case XFS_IOC_FSBULKSTAT: | |
1564 | case XFS_IOC_FSINUMBERS: | |
1565 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1566 | ||
1567 | case XFS_IOC_FSGEOMETRY_V1: | |
1568 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1569 | ||
1570 | case XFS_IOC_FSGEOMETRY: | |
1571 | return xfs_ioc_fsgeometry(mp, arg); | |
1572 | ||
1573 | case XFS_IOC_GETVERSION: | |
1574 | return put_user(inode->i_generation, (int __user *)arg); | |
1575 | ||
1576 | case XFS_IOC_FSGETXATTR: | |
1577 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1578 | case XFS_IOC_FSGETXATTRA: | |
1579 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1580 | case XFS_IOC_FSSETXATTR: |
1581 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1582 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1583 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1584 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1585 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1586 | |
1587 | case XFS_IOC_FSSETDM: { | |
1588 | struct fsdmidata dmi; | |
1589 | ||
1590 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
b474c7ae | 1591 | return -EFAULT; |
df26cfe8 | 1592 | |
d9457dc0 JK |
1593 | error = mnt_want_write_file(filp); |
1594 | if (error) | |
1595 | return error; | |
1596 | ||
df26cfe8 LM |
1597 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, |
1598 | dmi.fsd_dmstate); | |
d9457dc0 | 1599 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1600 | return -error; |
1601 | } | |
1602 | ||
1603 | case XFS_IOC_GETBMAP: | |
1604 | case XFS_IOC_GETBMAPA: | |
1605 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1606 | ||
1607 | case XFS_IOC_GETBMAPX: | |
1608 | return xfs_ioc_getbmapx(ip, arg); | |
1609 | ||
1610 | case XFS_IOC_FD_TO_HANDLE: | |
1611 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1612 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1613 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1614 | |
743bb465 | 1615 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
b474c7ae | 1616 | return -EFAULT; |
743bb465 | 1617 | return xfs_find_handle(cmd, &hreq); |
1618 | } | |
1619 | case XFS_IOC_OPEN_BY_HANDLE: { | |
1620 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1621 | |
743bb465 | 1622 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 1623 | return -EFAULT; |
d296d30a | 1624 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 1625 | } |
df26cfe8 | 1626 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1627 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1628 | |
743bb465 | 1629 | case XFS_IOC_READLINK_BY_HANDLE: { |
1630 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1631 | |
743bb465 | 1632 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 1633 | return -EFAULT; |
d296d30a | 1634 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1635 | } |
df26cfe8 | 1636 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1637 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1638 | |
1639 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1640 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1641 | |
1642 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1643 | struct xfs_swapext sxp; |
1644 | ||
1645 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
b474c7ae | 1646 | return -EFAULT; |
d9457dc0 JK |
1647 | error = mnt_want_write_file(filp); |
1648 | if (error) | |
1649 | return error; | |
a133d952 | 1650 | error = xfs_ioc_swapext(&sxp); |
d9457dc0 | 1651 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1652 | return -error; |
1653 | } | |
1654 | ||
1655 | case XFS_IOC_FSCOUNTS: { | |
1656 | xfs_fsop_counts_t out; | |
1657 | ||
1658 | error = xfs_fs_counts(mp, &out); | |
1659 | if (error) | |
1660 | return -error; | |
1661 | ||
1662 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 1663 | return -EFAULT; |
df26cfe8 LM |
1664 | return 0; |
1665 | } | |
1666 | ||
1667 | case XFS_IOC_SET_RESBLKS: { | |
1668 | xfs_fsop_resblks_t inout; | |
1669 | __uint64_t in; | |
1670 | ||
1671 | if (!capable(CAP_SYS_ADMIN)) | |
1672 | return -EPERM; | |
1673 | ||
d5db0f97 | 1674 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
b474c7ae | 1675 | return -EROFS; |
d5db0f97 | 1676 | |
df26cfe8 | 1677 | if (copy_from_user(&inout, arg, sizeof(inout))) |
b474c7ae | 1678 | return -EFAULT; |
df26cfe8 | 1679 | |
d9457dc0 JK |
1680 | error = mnt_want_write_file(filp); |
1681 | if (error) | |
1682 | return error; | |
1683 | ||
df26cfe8 LM |
1684 | /* input parameter is passed in resblks field of structure */ |
1685 | in = inout.resblks; | |
1686 | error = xfs_reserve_blocks(mp, &in, &inout); | |
d9457dc0 | 1687 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1688 | if (error) |
1689 | return -error; | |
1690 | ||
1691 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
b474c7ae | 1692 | return -EFAULT; |
df26cfe8 LM |
1693 | return 0; |
1694 | } | |
1695 | ||
1696 | case XFS_IOC_GET_RESBLKS: { | |
1697 | xfs_fsop_resblks_t out; | |
1698 | ||
1699 | if (!capable(CAP_SYS_ADMIN)) | |
1700 | return -EPERM; | |
1701 | ||
1702 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1703 | if (error) | |
1704 | return -error; | |
1705 | ||
1706 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 1707 | return -EFAULT; |
df26cfe8 LM |
1708 | |
1709 | return 0; | |
1710 | } | |
1711 | ||
1712 | case XFS_IOC_FSGROWFSDATA: { | |
1713 | xfs_growfs_data_t in; | |
1714 | ||
df26cfe8 | 1715 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1716 | return -EFAULT; |
df26cfe8 | 1717 | |
d9457dc0 JK |
1718 | error = mnt_want_write_file(filp); |
1719 | if (error) | |
1720 | return error; | |
df26cfe8 | 1721 | error = xfs_growfs_data(mp, &in); |
d9457dc0 | 1722 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1723 | return -error; |
1724 | } | |
1725 | ||
1726 | case XFS_IOC_FSGROWFSLOG: { | |
1727 | xfs_growfs_log_t in; | |
1728 | ||
df26cfe8 | 1729 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1730 | return -EFAULT; |
df26cfe8 | 1731 | |
d9457dc0 JK |
1732 | error = mnt_want_write_file(filp); |
1733 | if (error) | |
1734 | return error; | |
df26cfe8 | 1735 | error = xfs_growfs_log(mp, &in); |
d9457dc0 | 1736 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1737 | return -error; |
1738 | } | |
1739 | ||
1740 | case XFS_IOC_FSGROWFSRT: { | |
1741 | xfs_growfs_rt_t in; | |
1742 | ||
df26cfe8 | 1743 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1744 | return -EFAULT; |
df26cfe8 | 1745 | |
d9457dc0 JK |
1746 | error = mnt_want_write_file(filp); |
1747 | if (error) | |
1748 | return error; | |
df26cfe8 | 1749 | error = xfs_growfs_rt(mp, &in); |
d9457dc0 | 1750 | mnt_drop_write_file(filp); |
df26cfe8 LM |
1751 | return -error; |
1752 | } | |
1753 | ||
df26cfe8 LM |
1754 | case XFS_IOC_GOINGDOWN: { |
1755 | __uint32_t in; | |
1756 | ||
1757 | if (!capable(CAP_SYS_ADMIN)) | |
1758 | return -EPERM; | |
1759 | ||
1760 | if (get_user(in, (__uint32_t __user *)arg)) | |
b474c7ae | 1761 | return -EFAULT; |
df26cfe8 LM |
1762 | |
1763 | error = xfs_fs_goingdown(mp, in); | |
1764 | return -error; | |
1765 | } | |
1766 | ||
1767 | case XFS_IOC_ERROR_INJECTION: { | |
1768 | xfs_error_injection_t in; | |
1769 | ||
1770 | if (!capable(CAP_SYS_ADMIN)) | |
1771 | return -EPERM; | |
1772 | ||
1773 | if (copy_from_user(&in, arg, sizeof(in))) | |
b474c7ae | 1774 | return -EFAULT; |
df26cfe8 LM |
1775 | |
1776 | error = xfs_errortag_add(in.errtag, mp); | |
1777 | return -error; | |
1778 | } | |
1779 | ||
1780 | case XFS_IOC_ERROR_CLEARALL: | |
1781 | if (!capable(CAP_SYS_ADMIN)) | |
1782 | return -EPERM; | |
1783 | ||
1784 | error = xfs_errortag_clearall(mp, 1); | |
1785 | return -error; | |
1786 | ||
8ca149de | 1787 | case XFS_IOC_FREE_EOFBLOCKS: { |
b9fe5052 DE |
1788 | struct xfs_fs_eofblocks eofb; |
1789 | struct xfs_eofblocks keofb; | |
8ca149de | 1790 | |
8c567a7f DE |
1791 | if (!capable(CAP_SYS_ADMIN)) |
1792 | return -EPERM; | |
1793 | ||
1794 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
b474c7ae | 1795 | return -EROFS; |
8c567a7f | 1796 | |
8ca149de | 1797 | if (copy_from_user(&eofb, arg, sizeof(eofb))) |
b474c7ae | 1798 | return -EFAULT; |
8ca149de | 1799 | |
b9fe5052 DE |
1800 | error = xfs_fs_eofblocks_from_user(&eofb, &keofb); |
1801 | if (error) | |
1802 | return -error; | |
8ca149de | 1803 | |
b9fe5052 | 1804 | return -xfs_icache_free_eofblocks(mp, &keofb); |
8ca149de BF |
1805 | } |
1806 | ||
df26cfe8 LM |
1807 | default: |
1808 | return -ENOTTY; | |
1809 | } | |
1810 | } |