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" |
47e1bf64 | 43 | #include "xfs_acl.h" |
1da177e4 | 44 | |
16f7e0fe | 45 | #include <linux/capability.h> |
1da177e4 LT |
46 | #include <linux/dcache.h> |
47 | #include <linux/mount.h> | |
48 | #include <linux/namei.h> | |
49 | #include <linux/pagemap.h> | |
5a0e3ad6 | 50 | #include <linux/slab.h> |
d296d30a | 51 | #include <linux/exportfs.h> |
1da177e4 LT |
52 | |
53 | /* | |
54 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
55 | * a file or fs handle. | |
56 | * | |
57 | * XFS_IOC_PATH_TO_FSHANDLE | |
58 | * returns fs handle for a mount point or path within that mount point | |
59 | * XFS_IOC_FD_TO_HANDLE | |
60 | * returns full handle for a FD opened in user space | |
61 | * XFS_IOC_PATH_TO_HANDLE | |
62 | * returns full handle for a path | |
63 | */ | |
d5547f9f | 64 | int |
1da177e4 LT |
65 | xfs_find_handle( |
66 | unsigned int cmd, | |
743bb465 | 67 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
68 | { |
69 | int hsize; | |
70 | xfs_handle_t handle; | |
1da177e4 | 71 | struct inode *inode; |
a30b0367 | 72 | struct fd f = {NULL}; |
4346cdd4 | 73 | struct path path; |
2903ff01 | 74 | int error; |
4346cdd4 | 75 | struct xfs_inode *ip; |
1da177e4 | 76 | |
4346cdd4 | 77 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
2903ff01 AV |
78 | f = fdget(hreq->fd); |
79 | if (!f.file) | |
4346cdd4 | 80 | return -EBADF; |
496ad9aa | 81 | inode = file_inode(f.file); |
4346cdd4 CH |
82 | } else { |
83 | error = user_lpath((const char __user *)hreq->path, &path); | |
84 | if (error) | |
85 | return error; | |
2b0143b5 | 86 | inode = d_inode(path.dentry); |
1da177e4 | 87 | } |
4346cdd4 CH |
88 | ip = XFS_I(inode); |
89 | ||
90 | /* | |
91 | * We can only generate handles for inodes residing on a XFS filesystem, | |
92 | * and only for regular files, directories or symbolic links. | |
93 | */ | |
94 | error = -EINVAL; | |
95 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
96 | goto out_put; | |
97 | ||
98 | error = -EBADF; | |
99 | if (!S_ISREG(inode->i_mode) && | |
100 | !S_ISDIR(inode->i_mode) && | |
101 | !S_ISLNK(inode->i_mode)) | |
102 | goto out_put; | |
103 | ||
104 | ||
105 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
106 | ||
107 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
108 | /* | |
109 | * This handle only contains an fsid, zero the rest. | |
110 | */ | |
111 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
112 | hsize = sizeof(xfs_fsid_t); | |
113 | } else { | |
c6143911 CH |
114 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
115 | sizeof(handle.ha_fid.fid_len); | |
116 | handle.ha_fid.fid_pad = 0; | |
117 | handle.ha_fid.fid_gen = ip->i_d.di_gen; | |
118 | handle.ha_fid.fid_ino = ip->i_ino; | |
1da177e4 LT |
119 | |
120 | hsize = XFS_HSIZE(handle); | |
121 | } | |
122 | ||
4346cdd4 | 123 | error = -EFAULT; |
743bb465 | 124 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
125 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
126 | goto out_put; | |
1da177e4 | 127 | |
4346cdd4 CH |
128 | error = 0; |
129 | ||
130 | out_put: | |
131 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
2903ff01 | 132 | fdput(f); |
4346cdd4 CH |
133 | else |
134 | path_put(&path); | |
135 | return error; | |
1da177e4 LT |
136 | } |
137 | ||
1da177e4 | 138 | /* |
d296d30a CH |
139 | * No need to do permission checks on the various pathname components |
140 | * as the handle operations are privileged. | |
1da177e4 LT |
141 | */ |
142 | STATIC int | |
d296d30a CH |
143 | xfs_handle_acceptable( |
144 | void *context, | |
145 | struct dentry *dentry) | |
146 | { | |
147 | return 1; | |
148 | } | |
149 | ||
150 | /* | |
151 | * Convert userspace handle data into a dentry. | |
152 | */ | |
153 | struct dentry * | |
154 | xfs_handle_to_dentry( | |
155 | struct file *parfilp, | |
156 | void __user *uhandle, | |
157 | u32 hlen) | |
1da177e4 | 158 | { |
1da177e4 | 159 | xfs_handle_t handle; |
d296d30a | 160 | struct xfs_fid64 fid; |
1da177e4 LT |
161 | |
162 | /* | |
163 | * Only allow handle opens under a directory. | |
164 | */ | |
496ad9aa | 165 | if (!S_ISDIR(file_inode(parfilp)->i_mode)) |
d296d30a CH |
166 | return ERR_PTR(-ENOTDIR); |
167 | ||
168 | if (hlen != sizeof(xfs_handle_t)) | |
169 | return ERR_PTR(-EINVAL); | |
170 | if (copy_from_user(&handle, uhandle, hlen)) | |
171 | return ERR_PTR(-EFAULT); | |
172 | if (handle.ha_fid.fid_len != | |
173 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
174 | return ERR_PTR(-EINVAL); | |
175 | ||
176 | memset(&fid, 0, sizeof(struct fid)); | |
177 | fid.ino = handle.ha_fid.fid_ino; | |
178 | fid.gen = handle.ha_fid.fid_gen; | |
179 | ||
180 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
181 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
182 | xfs_handle_acceptable, NULL); | |
183 | } | |
1da177e4 | 184 | |
d296d30a CH |
185 | STATIC struct dentry * |
186 | xfs_handlereq_to_dentry( | |
187 | struct file *parfilp, | |
188 | xfs_fsop_handlereq_t *hreq) | |
189 | { | |
190 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
191 | } |
192 | ||
d5547f9f | 193 | int |
1da177e4 | 194 | xfs_open_by_handle( |
1da177e4 | 195 | struct file *parfilp, |
d296d30a | 196 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 197 | { |
745ca247 | 198 | const struct cred *cred = current_cred(); |
1da177e4 | 199 | int error; |
d296d30a | 200 | int fd; |
1da177e4 LT |
201 | int permflag; |
202 | struct file *filp; | |
203 | struct inode *inode; | |
204 | struct dentry *dentry; | |
1a1d7724 | 205 | fmode_t fmode; |
765927b2 | 206 | struct path path; |
1da177e4 LT |
207 | |
208 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 209 | return -EPERM; |
1da177e4 | 210 | |
d296d30a CH |
211 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
212 | if (IS_ERR(dentry)) | |
213 | return PTR_ERR(dentry); | |
2b0143b5 | 214 | inode = d_inode(dentry); |
1da177e4 LT |
215 | |
216 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
217 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
b474c7ae | 218 | error = -EPERM; |
d296d30a | 219 | goto out_dput; |
1da177e4 LT |
220 | } |
221 | ||
222 | #if BITS_PER_LONG != 32 | |
743bb465 | 223 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 224 | #endif |
d296d30a | 225 | |
743bb465 | 226 | permflag = hreq->oflags; |
1a1d7724 | 227 | fmode = OPEN_FMODE(permflag); |
1da177e4 | 228 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && |
1a1d7724 | 229 | (fmode & FMODE_WRITE) && IS_APPEND(inode)) { |
b474c7ae | 230 | error = -EPERM; |
d296d30a | 231 | goto out_dput; |
1da177e4 LT |
232 | } |
233 | ||
1a1d7724 | 234 | if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { |
b474c7ae | 235 | error = -EACCES; |
d296d30a | 236 | goto out_dput; |
1da177e4 LT |
237 | } |
238 | ||
239 | /* Can't write directories. */ | |
1a1d7724 | 240 | if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) { |
b474c7ae | 241 | error = -EISDIR; |
d296d30a | 242 | goto out_dput; |
1da177e4 LT |
243 | } |
244 | ||
862a6293 | 245 | fd = get_unused_fd_flags(0); |
d296d30a CH |
246 | if (fd < 0) { |
247 | error = fd; | |
248 | goto out_dput; | |
1da177e4 LT |
249 | } |
250 | ||
765927b2 AV |
251 | path.mnt = parfilp->f_path.mnt; |
252 | path.dentry = dentry; | |
253 | filp = dentry_open(&path, hreq->oflags, cred); | |
254 | dput(dentry); | |
1da177e4 | 255 | if (IS_ERR(filp)) { |
d296d30a CH |
256 | put_unused_fd(fd); |
257 | return PTR_ERR(filp); | |
1da177e4 | 258 | } |
4d4be482 | 259 | |
03209378 | 260 | if (S_ISREG(inode->i_mode)) { |
2e2e7bb1 | 261 | filp->f_flags |= O_NOATIME; |
4d4be482 | 262 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 263 | } |
1da177e4 | 264 | |
d296d30a CH |
265 | fd_install(fd, filp); |
266 | return fd; | |
267 | ||
268 | out_dput: | |
269 | dput(dentry); | |
270 | return error; | |
1da177e4 LT |
271 | } |
272 | ||
d5547f9f | 273 | int |
1da177e4 | 274 | xfs_readlink_by_handle( |
d296d30a CH |
275 | struct file *parfilp, |
276 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 277 | { |
d296d30a | 278 | struct dentry *dentry; |
1da177e4 | 279 | __u32 olen; |
804c83c3 CH |
280 | void *link; |
281 | int error; | |
1da177e4 LT |
282 | |
283 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 284 | return -EPERM; |
1da177e4 | 285 | |
d296d30a CH |
286 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
287 | if (IS_ERR(dentry)) | |
288 | return PTR_ERR(dentry); | |
1da177e4 LT |
289 | |
290 | /* Restrict this handle operation to symlinks only. */ | |
e36cb0b8 | 291 | if (!d_is_symlink(dentry)) { |
b474c7ae | 292 | error = -EINVAL; |
d296d30a | 293 | goto out_dput; |
1da177e4 LT |
294 | } |
295 | ||
743bb465 | 296 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
b474c7ae | 297 | error = -EFAULT; |
d296d30a | 298 | goto out_dput; |
1da177e4 | 299 | } |
1da177e4 | 300 | |
804c83c3 | 301 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
d296d30a | 302 | if (!link) { |
b474c7ae | 303 | error = -ENOMEM; |
d296d30a CH |
304 | goto out_dput; |
305 | } | |
1da177e4 | 306 | |
2b0143b5 | 307 | error = xfs_readlink(XFS_I(d_inode(dentry)), link); |
67fcaa73 | 308 | if (error) |
804c83c3 | 309 | goto out_kfree; |
5d826c84 | 310 | error = readlink_copy(hreq->ohandle, olen, link); |
804c83c3 CH |
311 | if (error) |
312 | goto out_kfree; | |
67fcaa73 | 313 | |
804c83c3 CH |
314 | out_kfree: |
315 | kfree(link); | |
d296d30a CH |
316 | out_dput: |
317 | dput(dentry); | |
804c83c3 | 318 | return error; |
1da177e4 LT |
319 | } |
320 | ||
c24b5dfa DC |
321 | int |
322 | xfs_set_dmattrs( | |
323 | xfs_inode_t *ip, | |
324 | u_int evmask, | |
325 | u_int16_t state) | |
326 | { | |
327 | xfs_mount_t *mp = ip->i_mount; | |
328 | xfs_trans_t *tp; | |
329 | int error; | |
330 | ||
331 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 332 | return -EPERM; |
c24b5dfa DC |
333 | |
334 | if (XFS_FORCED_SHUTDOWN(mp)) | |
2451337d | 335 | return -EIO; |
c24b5dfa DC |
336 | |
337 | tp = xfs_trans_alloc(mp, XFS_TRANS_SET_DMATTRS); | |
3d3c8b52 | 338 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); |
c24b5dfa | 339 | if (error) { |
4906e215 | 340 | xfs_trans_cancel(tp); |
c24b5dfa DC |
341 | return error; |
342 | } | |
343 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
344 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
345 | ||
346 | ip->i_d.di_dmevmask = evmask; | |
347 | ip->i_d.di_dmstate = state; | |
348 | ||
349 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
70393313 | 350 | error = xfs_trans_commit(tp); |
c24b5dfa DC |
351 | |
352 | return error; | |
353 | } | |
354 | ||
1da177e4 LT |
355 | STATIC int |
356 | xfs_fssetdm_by_handle( | |
d296d30a CH |
357 | struct file *parfilp, |
358 | void __user *arg) | |
1da177e4 LT |
359 | { |
360 | int error; | |
361 | struct fsdmidata fsd; | |
362 | xfs_fsop_setdm_handlereq_t dmhreq; | |
d296d30a | 363 | struct dentry *dentry; |
1da177e4 LT |
364 | |
365 | if (!capable(CAP_MKNOD)) | |
b474c7ae | 366 | return -EPERM; |
1da177e4 | 367 | if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t))) |
b474c7ae | 368 | return -EFAULT; |
1da177e4 | 369 | |
d9457dc0 JK |
370 | error = mnt_want_write_file(parfilp); |
371 | if (error) | |
372 | return error; | |
373 | ||
d296d30a | 374 | dentry = xfs_handlereq_to_dentry(parfilp, &dmhreq.hreq); |
d9457dc0 JK |
375 | if (IS_ERR(dentry)) { |
376 | mnt_drop_write_file(parfilp); | |
d296d30a | 377 | return PTR_ERR(dentry); |
d9457dc0 | 378 | } |
1da177e4 | 379 | |
2b0143b5 | 380 | if (IS_IMMUTABLE(d_inode(dentry)) || IS_APPEND(d_inode(dentry))) { |
b474c7ae | 381 | error = -EPERM; |
6e7f75ea | 382 | goto out; |
1da177e4 LT |
383 | } |
384 | ||
385 | if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) { | |
b474c7ae | 386 | error = -EFAULT; |
6e7f75ea | 387 | goto out; |
1da177e4 LT |
388 | } |
389 | ||
2b0143b5 | 390 | error = xfs_set_dmattrs(XFS_I(d_inode(dentry)), fsd.fsd_dmevmask, |
6e7f75ea | 391 | fsd.fsd_dmstate); |
1da177e4 | 392 | |
6e7f75ea | 393 | out: |
d9457dc0 | 394 | mnt_drop_write_file(parfilp); |
d296d30a | 395 | dput(dentry); |
6e7f75ea | 396 | return error; |
1da177e4 LT |
397 | } |
398 | ||
399 | STATIC int | |
400 | xfs_attrlist_by_handle( | |
d296d30a CH |
401 | struct file *parfilp, |
402 | void __user *arg) | |
1da177e4 | 403 | { |
d296d30a | 404 | int error = -ENOMEM; |
1da177e4 LT |
405 | attrlist_cursor_kern_t *cursor; |
406 | xfs_fsop_attrlist_handlereq_t al_hreq; | |
d296d30a | 407 | struct dentry *dentry; |
1da177e4 LT |
408 | char *kbuf; |
409 | ||
410 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 411 | return -EPERM; |
1da177e4 | 412 | if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t))) |
b474c7ae | 413 | return -EFAULT; |
071c529e | 414 | if (al_hreq.buflen < sizeof(struct attrlist) || |
4e247614 | 415 | al_hreq.buflen > XFS_XATTR_LIST_MAX) |
b474c7ae | 416 | return -EINVAL; |
1da177e4 | 417 | |
90ad58a8 CH |
418 | /* |
419 | * Reject flags, only allow namespaces. | |
420 | */ | |
421 | if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE)) | |
b474c7ae | 422 | return -EINVAL; |
90ad58a8 | 423 | |
d296d30a CH |
424 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
425 | if (IS_ERR(dentry)) | |
426 | return PTR_ERR(dentry); | |
1da177e4 | 427 | |
fdd3ccee DC |
428 | kbuf = kmem_zalloc_large(al_hreq.buflen, KM_SLEEP); |
429 | if (!kbuf) | |
430 | goto out_dput; | |
1da177e4 LT |
431 | |
432 | cursor = (attrlist_cursor_kern_t *)&al_hreq.pos; | |
2b0143b5 | 433 | error = xfs_attr_list(XFS_I(d_inode(dentry)), kbuf, al_hreq.buflen, |
739bfb2a | 434 | al_hreq.flags, cursor); |
1da177e4 LT |
435 | if (error) |
436 | goto out_kfree; | |
437 | ||
438 | if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen)) | |
439 | error = -EFAULT; | |
440 | ||
fdd3ccee DC |
441 | out_kfree: |
442 | kmem_free(kbuf); | |
443 | out_dput: | |
d296d30a CH |
444 | dput(dentry); |
445 | return error; | |
1da177e4 LT |
446 | } |
447 | ||
28750975 | 448 | int |
1da177e4 | 449 | xfs_attrmulti_attr_get( |
739bfb2a | 450 | struct inode *inode, |
a9273ca5 DC |
451 | unsigned char *name, |
452 | unsigned char __user *ubuf, | |
1da177e4 LT |
453 | __uint32_t *len, |
454 | __uint32_t flags) | |
455 | { | |
a9273ca5 | 456 | unsigned char *kbuf; |
2451337d | 457 | int error = -EFAULT; |
e8b0ebaa | 458 | |
51fcbfe7 | 459 | if (*len > XFS_XATTR_SIZE_MAX) |
2451337d | 460 | return -EINVAL; |
fdd3ccee DC |
461 | kbuf = kmem_zalloc_large(*len, KM_SLEEP); |
462 | if (!kbuf) | |
2451337d | 463 | return -ENOMEM; |
1da177e4 | 464 | |
e8b0ebaa | 465 | error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags); |
1da177e4 LT |
466 | if (error) |
467 | goto out_kfree; | |
468 | ||
469 | if (copy_to_user(ubuf, kbuf, *len)) | |
2451337d | 470 | error = -EFAULT; |
1da177e4 | 471 | |
fdd3ccee DC |
472 | out_kfree: |
473 | kmem_free(kbuf); | |
1da177e4 LT |
474 | return error; |
475 | } | |
476 | ||
28750975 | 477 | int |
1da177e4 | 478 | xfs_attrmulti_attr_set( |
739bfb2a | 479 | struct inode *inode, |
a9273ca5 DC |
480 | unsigned char *name, |
481 | const unsigned char __user *ubuf, | |
1da177e4 LT |
482 | __uint32_t len, |
483 | __uint32_t flags) | |
484 | { | |
a9273ca5 | 485 | unsigned char *kbuf; |
09cb22d2 | 486 | int error; |
1da177e4 | 487 | |
739bfb2a | 488 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
2451337d | 489 | return -EPERM; |
51fcbfe7 | 490 | if (len > XFS_XATTR_SIZE_MAX) |
2451337d | 491 | return -EINVAL; |
1da177e4 | 492 | |
0e639bde LZ |
493 | kbuf = memdup_user(ubuf, len); |
494 | if (IS_ERR(kbuf)) | |
495 | return PTR_ERR(kbuf); | |
e8b0ebaa | 496 | |
09cb22d2 | 497 | error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags); |
47e1bf64 AG |
498 | if (!error) |
499 | xfs_forget_acl(inode, name, flags); | |
09cb22d2 AG |
500 | kfree(kbuf); |
501 | return error; | |
1da177e4 LT |
502 | } |
503 | ||
28750975 | 504 | int |
1da177e4 | 505 | xfs_attrmulti_attr_remove( |
739bfb2a | 506 | struct inode *inode, |
a9273ca5 | 507 | unsigned char *name, |
1da177e4 LT |
508 | __uint32_t flags) |
509 | { | |
47e1bf64 AG |
510 | int error; |
511 | ||
739bfb2a | 512 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
2451337d | 513 | return -EPERM; |
47e1bf64 AG |
514 | error = xfs_attr_remove(XFS_I(inode), name, flags); |
515 | if (!error) | |
516 | xfs_forget_acl(inode, name, flags); | |
517 | return error; | |
1da177e4 LT |
518 | } |
519 | ||
520 | STATIC int | |
521 | xfs_attrmulti_by_handle( | |
42a74f20 | 522 | struct file *parfilp, |
d296d30a | 523 | void __user *arg) |
1da177e4 LT |
524 | { |
525 | int error; | |
526 | xfs_attr_multiop_t *ops; | |
527 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 528 | struct dentry *dentry; |
1da177e4 | 529 | unsigned int i, size; |
a9273ca5 | 530 | unsigned char *attr_name; |
1da177e4 LT |
531 | |
532 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 533 | return -EPERM; |
1da177e4 | 534 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) |
b474c7ae | 535 | return -EFAULT; |
1da177e4 | 536 | |
fda168c2 ZW |
537 | /* overflow check */ |
538 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) | |
539 | return -E2BIG; | |
540 | ||
d296d30a CH |
541 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
542 | if (IS_ERR(dentry)) | |
543 | return PTR_ERR(dentry); | |
1da177e4 | 544 | |
2451337d | 545 | error = -E2BIG; |
e182f57a | 546 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 547 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 548 | goto out_dput; |
1da177e4 | 549 | |
0e639bde LZ |
550 | ops = memdup_user(am_hreq.ops, size); |
551 | if (IS_ERR(ops)) { | |
2451337d | 552 | error = PTR_ERR(ops); |
d296d30a | 553 | goto out_dput; |
0e639bde | 554 | } |
1da177e4 | 555 | |
2451337d | 556 | error = -ENOMEM; |
1da177e4 LT |
557 | attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL); |
558 | if (!attr_name) | |
559 | goto out_kfree_ops; | |
560 | ||
1da177e4 LT |
561 | error = 0; |
562 | for (i = 0; i < am_hreq.opcount; i++) { | |
a9273ca5 | 563 | ops[i].am_error = strncpy_from_user((char *)attr_name, |
1da177e4 LT |
564 | ops[i].am_attrname, MAXNAMELEN); |
565 | if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) | |
2451337d | 566 | error = -ERANGE; |
1da177e4 LT |
567 | if (ops[i].am_error < 0) |
568 | break; | |
569 | ||
570 | switch (ops[i].am_opcode) { | |
571 | case ATTR_OP_GET: | |
d296d30a | 572 | ops[i].am_error = xfs_attrmulti_attr_get( |
2b0143b5 | 573 | d_inode(dentry), attr_name, |
d296d30a CH |
574 | ops[i].am_attrvalue, &ops[i].am_length, |
575 | ops[i].am_flags); | |
1da177e4 LT |
576 | break; |
577 | case ATTR_OP_SET: | |
a561be71 | 578 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
579 | if (ops[i].am_error) |
580 | break; | |
d296d30a | 581 | ops[i].am_error = xfs_attrmulti_attr_set( |
2b0143b5 | 582 | d_inode(dentry), attr_name, |
d296d30a CH |
583 | ops[i].am_attrvalue, ops[i].am_length, |
584 | ops[i].am_flags); | |
2a79f17e | 585 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
586 | break; |
587 | case ATTR_OP_REMOVE: | |
a561be71 | 588 | ops[i].am_error = mnt_want_write_file(parfilp); |
42a74f20 DH |
589 | if (ops[i].am_error) |
590 | break; | |
d296d30a | 591 | ops[i].am_error = xfs_attrmulti_attr_remove( |
2b0143b5 | 592 | d_inode(dentry), attr_name, |
d296d30a | 593 | ops[i].am_flags); |
2a79f17e | 594 | mnt_drop_write_file(parfilp); |
1da177e4 LT |
595 | break; |
596 | default: | |
2451337d | 597 | ops[i].am_error = -EINVAL; |
1da177e4 LT |
598 | } |
599 | } | |
600 | ||
601 | if (copy_to_user(am_hreq.ops, ops, size)) | |
2451337d | 602 | error = -EFAULT; |
1da177e4 LT |
603 | |
604 | kfree(attr_name); | |
605 | out_kfree_ops: | |
606 | kfree(ops); | |
d296d30a CH |
607 | out_dput: |
608 | dput(dentry); | |
2451337d | 609 | return error; |
1da177e4 LT |
610 | } |
611 | ||
d5547f9f | 612 | int |
1da177e4 | 613 | xfs_ioc_space( |
993386c1 | 614 | struct xfs_inode *ip, |
f37ea149 | 615 | struct inode *inode, |
1da177e4 LT |
616 | struct file *filp, |
617 | int ioflags, | |
618 | unsigned int cmd, | |
743bb465 | 619 | xfs_flock64_t *bf) |
1da177e4 | 620 | { |
865e9446 | 621 | struct iattr iattr; |
8add71ca | 622 | enum xfs_prealloc_flags flags = 0; |
781355c6 | 623 | uint iolock = XFS_IOLOCK_EXCL; |
1da177e4 LT |
624 | int error; |
625 | ||
743bb465 | 626 | /* |
627 | * Only allow the sys admin to reserve space unless | |
628 | * unwritten extents are enabled. | |
629 | */ | |
630 | if (!xfs_sb_version_hasextflgbit(&ip->i_mount->m_sb) && | |
631 | !capable(CAP_SYS_ADMIN)) | |
b474c7ae | 632 | return -EPERM; |
743bb465 | 633 | |
f37ea149 | 634 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
b474c7ae | 635 | return -EPERM; |
1da177e4 | 636 | |
ad4a8ac4 | 637 | if (!(filp->f_mode & FMODE_WRITE)) |
b474c7ae | 638 | return -EBADF; |
1da177e4 | 639 | |
f37ea149 | 640 | if (!S_ISREG(inode->i_mode)) |
b474c7ae | 641 | return -EINVAL; |
1da177e4 | 642 | |
8add71ca CH |
643 | if (filp->f_flags & O_DSYNC) |
644 | flags |= XFS_PREALLOC_SYNC; | |
e8e9ad42 | 645 | if (ioflags & XFS_IO_INVIS) |
8add71ca CH |
646 | flags |= XFS_PREALLOC_INVISIBLE; |
647 | ||
d9457dc0 JK |
648 | error = mnt_want_write_file(filp); |
649 | if (error) | |
650 | return error; | |
865e9446 | 651 | |
781355c6 | 652 | xfs_ilock(ip, iolock); |
21c3ea18 | 653 | error = xfs_break_layouts(inode, &iolock, false); |
781355c6 CH |
654 | if (error) |
655 | goto out_unlock; | |
865e9446 | 656 | |
e8e9ad42 DC |
657 | xfs_ilock(ip, XFS_MMAPLOCK_EXCL); |
658 | iolock |= XFS_MMAPLOCK_EXCL; | |
659 | ||
865e9446 CH |
660 | switch (bf->l_whence) { |
661 | case 0: /*SEEK_SET*/ | |
662 | break; | |
663 | case 1: /*SEEK_CUR*/ | |
664 | bf->l_start += filp->f_pos; | |
665 | break; | |
666 | case 2: /*SEEK_END*/ | |
667 | bf->l_start += XFS_ISIZE(ip); | |
668 | break; | |
669 | default: | |
2451337d | 670 | error = -EINVAL; |
865e9446 CH |
671 | goto out_unlock; |
672 | } | |
673 | ||
674 | /* | |
675 | * length of <= 0 for resv/unresv/zero is invalid. length for | |
676 | * alloc/free is ignored completely and we have no idea what userspace | |
677 | * might have set it to, so set it to zero to allow range | |
678 | * checks to pass. | |
679 | */ | |
680 | switch (cmd) { | |
681 | case XFS_IOC_ZERO_RANGE: | |
682 | case XFS_IOC_RESVSP: | |
683 | case XFS_IOC_RESVSP64: | |
684 | case XFS_IOC_UNRESVSP: | |
685 | case XFS_IOC_UNRESVSP64: | |
686 | if (bf->l_len <= 0) { | |
2451337d | 687 | error = -EINVAL; |
865e9446 CH |
688 | goto out_unlock; |
689 | } | |
690 | break; | |
691 | default: | |
692 | bf->l_len = 0; | |
693 | break; | |
694 | } | |
695 | ||
696 | if (bf->l_start < 0 || | |
8add71ca | 697 | bf->l_start > inode->i_sb->s_maxbytes || |
865e9446 | 698 | bf->l_start + bf->l_len < 0 || |
8add71ca | 699 | bf->l_start + bf->l_len >= inode->i_sb->s_maxbytes) { |
2451337d | 700 | error = -EINVAL; |
865e9446 CH |
701 | goto out_unlock; |
702 | } | |
703 | ||
704 | switch (cmd) { | |
705 | case XFS_IOC_ZERO_RANGE: | |
8add71ca | 706 | flags |= XFS_PREALLOC_SET; |
865e9446 | 707 | error = xfs_zero_file_space(ip, bf->l_start, bf->l_len); |
865e9446 CH |
708 | break; |
709 | case XFS_IOC_RESVSP: | |
710 | case XFS_IOC_RESVSP64: | |
8add71ca | 711 | flags |= XFS_PREALLOC_SET; |
865e9446 CH |
712 | error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len, |
713 | XFS_BMAPI_PREALLOC); | |
865e9446 CH |
714 | break; |
715 | case XFS_IOC_UNRESVSP: | |
716 | case XFS_IOC_UNRESVSP64: | |
717 | error = xfs_free_file_space(ip, bf->l_start, bf->l_len); | |
718 | break; | |
719 | case XFS_IOC_ALLOCSP: | |
720 | case XFS_IOC_ALLOCSP64: | |
721 | case XFS_IOC_FREESP: | |
722 | case XFS_IOC_FREESP64: | |
8add71ca | 723 | flags |= XFS_PREALLOC_CLEAR; |
865e9446 CH |
724 | if (bf->l_start > XFS_ISIZE(ip)) { |
725 | error = xfs_alloc_file_space(ip, XFS_ISIZE(ip), | |
726 | bf->l_start - XFS_ISIZE(ip), 0); | |
727 | if (error) | |
728 | goto out_unlock; | |
729 | } | |
730 | ||
731 | iattr.ia_valid = ATTR_SIZE; | |
732 | iattr.ia_size = bf->l_start; | |
733 | ||
734 | error = xfs_setattr_size(ip, &iattr); | |
865e9446 CH |
735 | break; |
736 | default: | |
737 | ASSERT(0); | |
2451337d | 738 | error = -EINVAL; |
865e9446 CH |
739 | } |
740 | ||
741 | if (error) | |
742 | goto out_unlock; | |
743 | ||
8add71ca | 744 | error = xfs_update_prealloc_flags(ip, flags); |
865e9446 CH |
745 | |
746 | out_unlock: | |
781355c6 | 747 | xfs_iunlock(ip, iolock); |
d9457dc0 | 748 | mnt_drop_write_file(filp); |
2451337d | 749 | return error; |
1da177e4 LT |
750 | } |
751 | ||
752 | STATIC int | |
753 | xfs_ioc_bulkstat( | |
754 | xfs_mount_t *mp, | |
755 | unsigned int cmd, | |
756 | void __user *arg) | |
757 | { | |
758 | xfs_fsop_bulkreq_t bulkreq; | |
759 | int count; /* # of records returned */ | |
760 | xfs_ino_t inlast; /* last inode number */ | |
761 | int done; | |
762 | int error; | |
763 | ||
764 | /* done = 1 if there are more stats to get and if bulkstat */ | |
765 | /* should be called again (unused here, but used in dmapi) */ | |
766 | ||
767 | if (!capable(CAP_SYS_ADMIN)) | |
768 | return -EPERM; | |
769 | ||
770 | if (XFS_FORCED_SHUTDOWN(mp)) | |
b474c7ae | 771 | return -EIO; |
1da177e4 LT |
772 | |
773 | if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t))) | |
b474c7ae | 774 | return -EFAULT; |
1da177e4 LT |
775 | |
776 | if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64))) | |
b474c7ae | 777 | return -EFAULT; |
1da177e4 LT |
778 | |
779 | if ((count = bulkreq.icount) <= 0) | |
b474c7ae | 780 | return -EINVAL; |
1da177e4 | 781 | |
cd57e594 | 782 | if (bulkreq.ubuffer == NULL) |
b474c7ae | 783 | return -EINVAL; |
cd57e594 | 784 | |
1da177e4 LT |
785 | if (cmd == XFS_IOC_FSINUMBERS) |
786 | error = xfs_inumbers(mp, &inlast, &count, | |
faa63e95 | 787 | bulkreq.ubuffer, xfs_inumbers_fmt); |
1da177e4 | 788 | else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) |
d716f8ee CH |
789 | error = xfs_bulkstat_one(mp, inlast, bulkreq.ubuffer, |
790 | sizeof(xfs_bstat_t), NULL, &done); | |
cd57e594 | 791 | else /* XFS_IOC_FSBULKSTAT */ |
7dce11db CH |
792 | error = xfs_bulkstat(mp, &inlast, &count, xfs_bulkstat_one, |
793 | sizeof(xfs_bstat_t), bulkreq.ubuffer, | |
794 | &done); | |
1da177e4 LT |
795 | |
796 | if (error) | |
2451337d | 797 | return error; |
1da177e4 LT |
798 | |
799 | if (bulkreq.ocount != NULL) { | |
800 | if (copy_to_user(bulkreq.lastip, &inlast, | |
801 | sizeof(xfs_ino_t))) | |
b474c7ae | 802 | return -EFAULT; |
1da177e4 LT |
803 | |
804 | if (copy_to_user(bulkreq.ocount, &count, sizeof(count))) | |
b474c7ae | 805 | return -EFAULT; |
1da177e4 LT |
806 | } |
807 | ||
808 | return 0; | |
809 | } | |
810 | ||
811 | STATIC int | |
812 | xfs_ioc_fsgeometry_v1( | |
813 | xfs_mount_t *mp, | |
814 | void __user *arg) | |
815 | { | |
eeb2036b | 816 | xfs_fsop_geom_t fsgeo; |
1da177e4 LT |
817 | int error; |
818 | ||
eeb2036b | 819 | error = xfs_fs_geometry(mp, &fsgeo, 3); |
1da177e4 | 820 | if (error) |
2451337d | 821 | return error; |
1da177e4 | 822 | |
eeb2036b AE |
823 | /* |
824 | * Caller should have passed an argument of type | |
825 | * xfs_fsop_geom_v1_t. This is a proper subset of the | |
826 | * xfs_fsop_geom_t that xfs_fs_geometry() fills in. | |
827 | */ | |
828 | if (copy_to_user(arg, &fsgeo, sizeof(xfs_fsop_geom_v1_t))) | |
b474c7ae | 829 | return -EFAULT; |
1da177e4 LT |
830 | return 0; |
831 | } | |
832 | ||
833 | STATIC int | |
834 | xfs_ioc_fsgeometry( | |
835 | xfs_mount_t *mp, | |
836 | void __user *arg) | |
837 | { | |
838 | xfs_fsop_geom_t fsgeo; | |
839 | int error; | |
840 | ||
841 | error = xfs_fs_geometry(mp, &fsgeo, 4); | |
842 | if (error) | |
2451337d | 843 | return error; |
1da177e4 LT |
844 | |
845 | if (copy_to_user(arg, &fsgeo, sizeof(fsgeo))) | |
b474c7ae | 846 | return -EFAULT; |
1da177e4 LT |
847 | return 0; |
848 | } | |
849 | ||
850 | /* | |
851 | * Linux extended inode flags interface. | |
852 | */ | |
1da177e4 LT |
853 | |
854 | STATIC unsigned int | |
855 | xfs_merge_ioc_xflags( | |
856 | unsigned int flags, | |
857 | unsigned int start) | |
858 | { | |
859 | unsigned int xflags = start; | |
860 | ||
39058a0e | 861 | if (flags & FS_IMMUTABLE_FL) |
e7b89481 | 862 | xflags |= FS_XFLAG_IMMUTABLE; |
1da177e4 | 863 | else |
e7b89481 | 864 | xflags &= ~FS_XFLAG_IMMUTABLE; |
39058a0e | 865 | if (flags & FS_APPEND_FL) |
e7b89481 | 866 | xflags |= FS_XFLAG_APPEND; |
1da177e4 | 867 | else |
e7b89481 | 868 | xflags &= ~FS_XFLAG_APPEND; |
39058a0e | 869 | if (flags & FS_SYNC_FL) |
e7b89481 | 870 | xflags |= FS_XFLAG_SYNC; |
1da177e4 | 871 | else |
e7b89481 | 872 | xflags &= ~FS_XFLAG_SYNC; |
39058a0e | 873 | if (flags & FS_NOATIME_FL) |
e7b89481 | 874 | xflags |= FS_XFLAG_NOATIME; |
1da177e4 | 875 | else |
e7b89481 | 876 | xflags &= ~FS_XFLAG_NOATIME; |
39058a0e | 877 | if (flags & FS_NODUMP_FL) |
e7b89481 | 878 | xflags |= FS_XFLAG_NODUMP; |
1da177e4 | 879 | else |
e7b89481 | 880 | xflags &= ~FS_XFLAG_NODUMP; |
1da177e4 LT |
881 | |
882 | return xflags; | |
883 | } | |
884 | ||
885 | STATIC unsigned int | |
886 | xfs_di2lxflags( | |
887 | __uint16_t di_flags) | |
888 | { | |
889 | unsigned int flags = 0; | |
890 | ||
891 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 892 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 893 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 894 | flags |= FS_APPEND_FL; |
1da177e4 | 895 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 896 | flags |= FS_SYNC_FL; |
1da177e4 | 897 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 898 | flags |= FS_NOATIME_FL; |
1da177e4 | 899 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 900 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
901 | return flags; |
902 | } | |
903 | ||
c83bfab1 CH |
904 | STATIC int |
905 | xfs_ioc_fsgetxattr( | |
906 | xfs_inode_t *ip, | |
907 | int attr, | |
908 | void __user *arg) | |
909 | { | |
910 | struct fsxattr fa; | |
911 | ||
a122eb2f DR |
912 | memset(&fa, 0, sizeof(struct fsxattr)); |
913 | ||
c83bfab1 CH |
914 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
915 | fa.fsx_xflags = xfs_ip2xflags(ip); | |
916 | fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
6743099c | 917 | fa.fsx_projid = xfs_get_projid(ip); |
c83bfab1 CH |
918 | |
919 | if (attr) { | |
920 | if (ip->i_afp) { | |
921 | if (ip->i_afp->if_flags & XFS_IFEXTENTS) | |
922 | fa.fsx_nextents = ip->i_afp->if_bytes / | |
923 | sizeof(xfs_bmbt_rec_t); | |
924 | else | |
925 | fa.fsx_nextents = ip->i_d.di_anextents; | |
926 | } else | |
927 | fa.fsx_nextents = 0; | |
928 | } else { | |
929 | if (ip->i_df.if_flags & XFS_IFEXTENTS) | |
930 | fa.fsx_nextents = ip->i_df.if_bytes / | |
931 | sizeof(xfs_bmbt_rec_t); | |
932 | else | |
933 | fa.fsx_nextents = ip->i_d.di_nextents; | |
934 | } | |
935 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
936 | ||
937 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
938 | return -EFAULT; | |
939 | return 0; | |
940 | } | |
941 | ||
25fe55e8 CH |
942 | STATIC void |
943 | xfs_set_diflags( | |
944 | struct xfs_inode *ip, | |
945 | unsigned int xflags) | |
946 | { | |
947 | unsigned int di_flags; | |
948 | ||
949 | /* can't set PREALLOC this way, just preserve it */ | |
950 | di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
e7b89481 | 951 | if (xflags & FS_XFLAG_IMMUTABLE) |
25fe55e8 | 952 | di_flags |= XFS_DIFLAG_IMMUTABLE; |
e7b89481 | 953 | if (xflags & FS_XFLAG_APPEND) |
25fe55e8 | 954 | di_flags |= XFS_DIFLAG_APPEND; |
e7b89481 | 955 | if (xflags & FS_XFLAG_SYNC) |
25fe55e8 | 956 | di_flags |= XFS_DIFLAG_SYNC; |
e7b89481 | 957 | if (xflags & FS_XFLAG_NOATIME) |
25fe55e8 | 958 | di_flags |= XFS_DIFLAG_NOATIME; |
e7b89481 | 959 | if (xflags & FS_XFLAG_NODUMP) |
25fe55e8 | 960 | di_flags |= XFS_DIFLAG_NODUMP; |
e7b89481 | 961 | if (xflags & FS_XFLAG_NODEFRAG) |
25fe55e8 | 962 | di_flags |= XFS_DIFLAG_NODEFRAG; |
e7b89481 | 963 | if (xflags & FS_XFLAG_FILESTREAM) |
25fe55e8 | 964 | di_flags |= XFS_DIFLAG_FILESTREAM; |
abbede1b | 965 | if (S_ISDIR(ip->i_d.di_mode)) { |
e7b89481 | 966 | if (xflags & FS_XFLAG_RTINHERIT) |
25fe55e8 | 967 | di_flags |= XFS_DIFLAG_RTINHERIT; |
e7b89481 | 968 | if (xflags & FS_XFLAG_NOSYMLINKS) |
25fe55e8 | 969 | di_flags |= XFS_DIFLAG_NOSYMLINKS; |
e7b89481 | 970 | if (xflags & FS_XFLAG_EXTSZINHERIT) |
25fe55e8 | 971 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; |
e7b89481 | 972 | if (xflags & FS_XFLAG_PROJINHERIT) |
9336e3a7 | 973 | di_flags |= XFS_DIFLAG_PROJINHERIT; |
abbede1b | 974 | } else if (S_ISREG(ip->i_d.di_mode)) { |
e7b89481 | 975 | if (xflags & FS_XFLAG_REALTIME) |
25fe55e8 | 976 | di_flags |= XFS_DIFLAG_REALTIME; |
e7b89481 | 977 | if (xflags & FS_XFLAG_EXTSIZE) |
25fe55e8 CH |
978 | di_flags |= XFS_DIFLAG_EXTSIZE; |
979 | } | |
980 | ||
981 | ip->i_d.di_flags = di_flags; | |
982 | } | |
983 | ||
f13fae2d CH |
984 | STATIC void |
985 | xfs_diflags_to_linux( | |
986 | struct xfs_inode *ip) | |
987 | { | |
e4f75291 | 988 | struct inode *inode = VFS_I(ip); |
f13fae2d CH |
989 | unsigned int xflags = xfs_ip2xflags(ip); |
990 | ||
e7b89481 | 991 | if (xflags & FS_XFLAG_IMMUTABLE) |
f13fae2d CH |
992 | inode->i_flags |= S_IMMUTABLE; |
993 | else | |
994 | inode->i_flags &= ~S_IMMUTABLE; | |
e7b89481 | 995 | if (xflags & FS_XFLAG_APPEND) |
f13fae2d CH |
996 | inode->i_flags |= S_APPEND; |
997 | else | |
998 | inode->i_flags &= ~S_APPEND; | |
e7b89481 | 999 | if (xflags & FS_XFLAG_SYNC) |
f13fae2d CH |
1000 | inode->i_flags |= S_SYNC; |
1001 | else | |
1002 | inode->i_flags &= ~S_SYNC; | |
e7b89481 | 1003 | if (xflags & FS_XFLAG_NOATIME) |
f13fae2d CH |
1004 | inode->i_flags |= S_NOATIME; |
1005 | else | |
1006 | inode->i_flags &= ~S_NOATIME; | |
1007 | } | |
25fe55e8 | 1008 | |
29a17c00 DC |
1009 | static int |
1010 | xfs_ioctl_setattr_xflags( | |
1011 | struct xfs_trans *tp, | |
1012 | struct xfs_inode *ip, | |
1013 | struct fsxattr *fa) | |
1014 | { | |
1015 | struct xfs_mount *mp = ip->i_mount; | |
1016 | ||
1017 | /* Can't change realtime flag if any extents are allocated. */ | |
1018 | if ((ip->i_d.di_nextents || ip->i_delayed_blks) && | |
e7b89481 | 1019 | XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & FS_XFLAG_REALTIME)) |
29a17c00 DC |
1020 | return -EINVAL; |
1021 | ||
1022 | /* If realtime flag is set then must have realtime device */ | |
e7b89481 | 1023 | if (fa->fsx_xflags & FS_XFLAG_REALTIME) { |
29a17c00 DC |
1024 | if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 || |
1025 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) | |
1026 | return -EINVAL; | |
1027 | } | |
1028 | ||
1029 | /* | |
1030 | * Can't modify an immutable/append-only file unless | |
1031 | * we have appropriate permission. | |
1032 | */ | |
1033 | if (((ip->i_d.di_flags & (XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND)) || | |
e7b89481 | 1034 | (fa->fsx_xflags & (FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND))) && |
29a17c00 DC |
1035 | !capable(CAP_LINUX_IMMUTABLE)) |
1036 | return -EPERM; | |
1037 | ||
29a17c00 DC |
1038 | xfs_set_diflags(ip, fa->fsx_xflags); |
1039 | xfs_diflags_to_linux(ip); | |
1040 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); | |
1041 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
ff6d6af2 | 1042 | XFS_STATS_INC(mp, xs_ig_attrchg); |
29a17c00 DC |
1043 | return 0; |
1044 | } | |
1045 | ||
8f3d17ab DC |
1046 | /* |
1047 | * Set up the transaction structure for the setattr operation, checking that we | |
1048 | * have permission to do so. On success, return a clean transaction and the | |
1049 | * inode locked exclusively ready for further operation specific checks. On | |
1050 | * failure, return an error without modifying or locking the inode. | |
1051 | */ | |
1052 | static struct xfs_trans * | |
1053 | xfs_ioctl_setattr_get_trans( | |
1054 | struct xfs_inode *ip) | |
1055 | { | |
1056 | struct xfs_mount *mp = ip->i_mount; | |
1057 | struct xfs_trans *tp; | |
1058 | int error; | |
1059 | ||
1060 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
1061 | return ERR_PTR(-EROFS); | |
1062 | if (XFS_FORCED_SHUTDOWN(mp)) | |
1063 | return ERR_PTR(-EIO); | |
1064 | ||
1065 | tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE); | |
1066 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_ichange, 0, 0); | |
1067 | if (error) | |
1068 | goto out_cancel; | |
1069 | ||
1070 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
1071 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
1072 | ||
1073 | /* | |
1074 | * CAP_FOWNER overrides the following restrictions: | |
1075 | * | |
1076 | * The user ID of the calling process must be equal to the file owner | |
1077 | * ID, except in cases where the CAP_FSETID capability is applicable. | |
1078 | */ | |
1079 | if (!inode_owner_or_capable(VFS_I(ip))) { | |
1080 | error = -EPERM; | |
1081 | goto out_cancel; | |
1082 | } | |
1083 | ||
1084 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1085 | xfs_trans_set_sync(tp); | |
1086 | ||
1087 | return tp; | |
1088 | ||
1089 | out_cancel: | |
4906e215 | 1090 | xfs_trans_cancel(tp); |
8f3d17ab DC |
1091 | return ERR_PTR(error); |
1092 | } | |
1093 | ||
9b94fcc3 IP |
1094 | /* |
1095 | * extent size hint validation is somewhat cumbersome. Rules are: | |
1096 | * | |
1097 | * 1. extent size hint is only valid for directories and regular files | |
e7b89481 DC |
1098 | * 2. FS_XFLAG_EXTSIZE is only valid for regular files |
1099 | * 3. FS_XFLAG_EXTSZINHERIT is only valid for directories. | |
9b94fcc3 IP |
1100 | * 4. can only be changed on regular files if no extents are allocated |
1101 | * 5. can be changed on directories at any time | |
1102 | * 6. extsize hint of 0 turns off hints, clears inode flags. | |
1103 | * 7. Extent size must be a multiple of the appropriate block size. | |
1104 | * 8. for non-realtime files, the extent size hint must be limited | |
1105 | * to half the AG size to avoid alignment extending the extent beyond the | |
1106 | * limits of the AG. | |
1107 | */ | |
f92090e9 | 1108 | static int |
d4388d3c DC |
1109 | xfs_ioctl_setattr_check_extsize( |
1110 | struct xfs_inode *ip, | |
1111 | struct fsxattr *fa) | |
1112 | { | |
1113 | struct xfs_mount *mp = ip->i_mount; | |
1114 | ||
e7b89481 | 1115 | if ((fa->fsx_xflags & FS_XFLAG_EXTSIZE) && !S_ISREG(ip->i_d.di_mode)) |
9b94fcc3 IP |
1116 | return -EINVAL; |
1117 | ||
e7b89481 | 1118 | if ((fa->fsx_xflags & FS_XFLAG_EXTSZINHERIT) && |
9b94fcc3 IP |
1119 | !S_ISDIR(ip->i_d.di_mode)) |
1120 | return -EINVAL; | |
1121 | ||
1122 | if (S_ISREG(ip->i_d.di_mode) && ip->i_d.di_nextents && | |
d4388d3c DC |
1123 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize)) |
1124 | return -EINVAL; | |
1125 | ||
d4388d3c DC |
1126 | if (fa->fsx_extsize != 0) { |
1127 | xfs_extlen_t size; | |
1128 | xfs_fsblock_t extsize_fsb; | |
1129 | ||
1130 | extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); | |
1131 | if (extsize_fsb > MAXEXTLEN) | |
1132 | return -EINVAL; | |
1133 | ||
1134 | if (XFS_IS_REALTIME_INODE(ip) || | |
e7b89481 | 1135 | (fa->fsx_xflags & FS_XFLAG_REALTIME)) { |
d4388d3c DC |
1136 | size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog; |
1137 | } else { | |
1138 | size = mp->m_sb.sb_blocksize; | |
1139 | if (extsize_fsb > mp->m_sb.sb_agblocks / 2) | |
1140 | return -EINVAL; | |
1141 | } | |
1142 | ||
1143 | if (fa->fsx_extsize % size) | |
1144 | return -EINVAL; | |
9b94fcc3 | 1145 | } else |
e7b89481 | 1146 | fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT); |
9b94fcc3 | 1147 | |
d4388d3c DC |
1148 | return 0; |
1149 | } | |
1150 | ||
f92090e9 | 1151 | static int |
23bd0735 DC |
1152 | xfs_ioctl_setattr_check_projid( |
1153 | struct xfs_inode *ip, | |
1154 | struct fsxattr *fa) | |
1155 | { | |
1156 | /* Disallow 32bit project ids if projid32bit feature is not enabled. */ | |
1157 | if (fa->fsx_projid > (__uint16_t)-1 && | |
1158 | !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) | |
1159 | return -EINVAL; | |
1160 | ||
1161 | /* | |
1162 | * Project Quota ID state is only allowed to change from within the init | |
1163 | * namespace. Enforce that restriction only if we are trying to change | |
1164 | * the quota ID state. Everything else is allowed in user namespaces. | |
1165 | */ | |
1166 | if (current_user_ns() == &init_user_ns) | |
1167 | return 0; | |
1168 | ||
1169 | if (xfs_get_projid(ip) != fa->fsx_projid) | |
1170 | return -EINVAL; | |
e7b89481 | 1171 | if ((fa->fsx_xflags & FS_XFLAG_PROJINHERIT) != |
23bd0735 DC |
1172 | (ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT)) |
1173 | return -EINVAL; | |
1174 | ||
1175 | return 0; | |
1176 | } | |
25fe55e8 CH |
1177 | |
1178 | STATIC int | |
1179 | xfs_ioctl_setattr( | |
1180 | xfs_inode_t *ip, | |
fd179b9c | 1181 | struct fsxattr *fa) |
25fe55e8 CH |
1182 | { |
1183 | struct xfs_mount *mp = ip->i_mount; | |
1184 | struct xfs_trans *tp; | |
7d095257 | 1185 | struct xfs_dquot *udqp = NULL; |
92f8ff73 | 1186 | struct xfs_dquot *pdqp = NULL; |
25fe55e8 CH |
1187 | struct xfs_dquot *olddquot = NULL; |
1188 | int code; | |
1189 | ||
cca28fb8 | 1190 | trace_xfs_ioctl_setattr(ip); |
25fe55e8 | 1191 | |
23bd0735 DC |
1192 | code = xfs_ioctl_setattr_check_projid(ip, fa); |
1193 | if (code) | |
1194 | return code; | |
23963e54 | 1195 | |
25fe55e8 CH |
1196 | /* |
1197 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
1198 | * before we start any other transactions. Trying to do this later | |
1199 | * is messy. We don't care to take a readlock to look at the ids | |
1200 | * in inode here, because we can't hold it across the trans_reserve. | |
1201 | * If the IDs do change before we take the ilock, we're covered | |
1202 | * because the i_*dquot fields will get updated anyway. | |
1203 | */ | |
fd179b9c | 1204 | if (XFS_IS_QUOTA_ON(mp)) { |
7d095257 | 1205 | code = xfs_qm_vop_dqalloc(ip, ip->i_d.di_uid, |
25fe55e8 | 1206 | ip->i_d.di_gid, fa->fsx_projid, |
92f8ff73 | 1207 | XFS_QMOPT_PQUOTA, &udqp, NULL, &pdqp); |
25fe55e8 CH |
1208 | if (code) |
1209 | return code; | |
1210 | } | |
1211 | ||
8f3d17ab DC |
1212 | tp = xfs_ioctl_setattr_get_trans(ip); |
1213 | if (IS_ERR(tp)) { | |
1214 | code = PTR_ERR(tp); | |
1215 | goto error_free_dquots; | |
25fe55e8 CH |
1216 | } |
1217 | ||
25fe55e8 | 1218 | |
fd179b9c DC |
1219 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) && |
1220 | xfs_get_projid(ip) != fa->fsx_projid) { | |
1221 | code = xfs_qm_vop_chown_reserve(tp, ip, udqp, NULL, pdqp, | |
1222 | capable(CAP_FOWNER) ? XFS_QMOPT_FORCE_RES : 0); | |
1223 | if (code) /* out of quota */ | |
d4388d3c | 1224 | goto error_trans_cancel; |
25fe55e8 CH |
1225 | } |
1226 | ||
d4388d3c DC |
1227 | code = xfs_ioctl_setattr_check_extsize(ip, fa); |
1228 | if (code) | |
1229 | goto error_trans_cancel; | |
25fe55e8 | 1230 | |
29a17c00 DC |
1231 | code = xfs_ioctl_setattr_xflags(tp, ip, fa); |
1232 | if (code) | |
d4388d3c | 1233 | goto error_trans_cancel; |
25fe55e8 CH |
1234 | |
1235 | /* | |
fd179b9c DC |
1236 | * Change file ownership. Must be the owner or privileged. CAP_FSETID |
1237 | * overrides the following restrictions: | |
1238 | * | |
1239 | * The set-user-ID and set-group-ID bits of a file will be cleared upon | |
1240 | * successful return from chown() | |
25fe55e8 | 1241 | */ |
25fe55e8 | 1242 | |
fd179b9c DC |
1243 | if ((ip->i_d.di_mode & (S_ISUID|S_ISGID)) && |
1244 | !capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID)) | |
1245 | ip->i_d.di_mode &= ~(S_ISUID|S_ISGID); | |
25fe55e8 | 1246 | |
fd179b9c DC |
1247 | /* Change the ownerships and register project quota modifications */ |
1248 | if (xfs_get_projid(ip) != fa->fsx_projid) { | |
1249 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { | |
1250 | olddquot = xfs_qm_vop_chown(tp, ip, | |
1251 | &ip->i_pdquot, pdqp); | |
1252 | } | |
1253 | ASSERT(ip->i_d.di_version > 1); | |
1254 | xfs_set_projid(ip, fa->fsx_projid); | |
f13fae2d | 1255 | } |
25fe55e8 | 1256 | |
a872703f DC |
1257 | /* |
1258 | * Only set the extent size hint if we've already determined that the | |
1259 | * extent size hint should be set on the inode. If no extent size flags | |
1260 | * are set on the inode then unconditionally clear the extent size hint. | |
1261 | */ | |
fd179b9c DC |
1262 | if (ip->i_d.di_flags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT)) |
1263 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
1264 | else | |
1265 | ip->i_d.di_extsize = 0; | |
25fe55e8 | 1266 | |
70393313 | 1267 | code = xfs_trans_commit(tp); |
25fe55e8 CH |
1268 | |
1269 | /* | |
1270 | * Release any dquot(s) the inode had kept before chown. | |
1271 | */ | |
7d095257 CH |
1272 | xfs_qm_dqrele(olddquot); |
1273 | xfs_qm_dqrele(udqp); | |
92f8ff73 | 1274 | xfs_qm_dqrele(pdqp); |
25fe55e8 | 1275 | |
288699fe | 1276 | return code; |
25fe55e8 | 1277 | |
d4388d3c | 1278 | error_trans_cancel: |
4906e215 | 1279 | xfs_trans_cancel(tp); |
8f3d17ab | 1280 | error_free_dquots: |
7d095257 | 1281 | xfs_qm_dqrele(udqp); |
92f8ff73 | 1282 | xfs_qm_dqrele(pdqp); |
25fe55e8 CH |
1283 | return code; |
1284 | } | |
1285 | ||
1da177e4 | 1286 | STATIC int |
df26cfe8 | 1287 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1288 | xfs_inode_t *ip, |
1289 | struct file *filp, | |
1da177e4 LT |
1290 | void __user *arg) |
1291 | { | |
1292 | struct fsxattr fa; | |
d9457dc0 | 1293 | int error; |
df26cfe8 LM |
1294 | |
1295 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1296 | return -EFAULT; | |
1da177e4 | 1297 | |
d9457dc0 JK |
1298 | error = mnt_want_write_file(filp); |
1299 | if (error) | |
1300 | return error; | |
fd179b9c | 1301 | error = xfs_ioctl_setattr(ip, &fa); |
d9457dc0 | 1302 | mnt_drop_write_file(filp); |
2451337d | 1303 | return error; |
df26cfe8 | 1304 | } |
1da177e4 | 1305 | |
df26cfe8 LM |
1306 | STATIC int |
1307 | xfs_ioc_getxflags( | |
1308 | xfs_inode_t *ip, | |
1309 | void __user *arg) | |
1310 | { | |
1311 | unsigned int flags; | |
1da177e4 | 1312 | |
df26cfe8 LM |
1313 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1314 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1315 | return -EFAULT; | |
1316 | return 0; | |
1317 | } | |
1da177e4 | 1318 | |
df26cfe8 LM |
1319 | STATIC int |
1320 | xfs_ioc_setxflags( | |
f96291f6 | 1321 | struct xfs_inode *ip, |
df26cfe8 LM |
1322 | struct file *filp, |
1323 | void __user *arg) | |
1324 | { | |
f96291f6 | 1325 | struct xfs_trans *tp; |
25fe55e8 | 1326 | struct fsxattr fa; |
df26cfe8 | 1327 | unsigned int flags; |
f96291f6 | 1328 | int error; |
1da177e4 | 1329 | |
df26cfe8 LM |
1330 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1331 | return -EFAULT; | |
1da177e4 | 1332 | |
df26cfe8 LM |
1333 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1334 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1335 | FS_SYNC_FL)) | |
1336 | return -EOPNOTSUPP; | |
1da177e4 | 1337 | |
25fe55e8 | 1338 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); |
1da177e4 | 1339 | |
d9457dc0 JK |
1340 | error = mnt_want_write_file(filp); |
1341 | if (error) | |
1342 | return error; | |
f96291f6 DC |
1343 | |
1344 | tp = xfs_ioctl_setattr_get_trans(ip); | |
1345 | if (IS_ERR(tp)) { | |
1346 | error = PTR_ERR(tp); | |
1347 | goto out_drop_write; | |
1348 | } | |
1349 | ||
1350 | error = xfs_ioctl_setattr_xflags(tp, ip, &fa); | |
1351 | if (error) { | |
4906e215 | 1352 | xfs_trans_cancel(tp); |
f96291f6 DC |
1353 | goto out_drop_write; |
1354 | } | |
1355 | ||
70393313 | 1356 | error = xfs_trans_commit(tp); |
f96291f6 | 1357 | out_drop_write: |
d9457dc0 | 1358 | mnt_drop_write_file(filp); |
2451337d | 1359 | return error; |
1da177e4 LT |
1360 | } |
1361 | ||
8a7141a8 ES |
1362 | STATIC int |
1363 | xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) | |
1364 | { | |
b972d079 | 1365 | struct getbmap __user *base = (struct getbmap __user *)*ap; |
8a7141a8 ES |
1366 | |
1367 | /* copy only getbmap portion (not getbmapx) */ | |
1368 | if (copy_to_user(base, bmv, sizeof(struct getbmap))) | |
2451337d | 1369 | return -EFAULT; |
8a7141a8 ES |
1370 | |
1371 | *ap += sizeof(struct getbmap); | |
1372 | return 0; | |
1373 | } | |
1374 | ||
1da177e4 LT |
1375 | STATIC int |
1376 | xfs_ioc_getbmap( | |
993386c1 | 1377 | struct xfs_inode *ip, |
1da177e4 LT |
1378 | int ioflags, |
1379 | unsigned int cmd, | |
1380 | void __user *arg) | |
1381 | { | |
8a7141a8 | 1382 | struct getbmapx bmx; |
1da177e4 LT |
1383 | int error; |
1384 | ||
8a7141a8 | 1385 | if (copy_from_user(&bmx, arg, sizeof(struct getbmapx))) |
b474c7ae | 1386 | return -EFAULT; |
1da177e4 | 1387 | |
8a7141a8 | 1388 | if (bmx.bmv_count < 2) |
b474c7ae | 1389 | return -EINVAL; |
1da177e4 | 1390 | |
8a7141a8 | 1391 | bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); |
b92cc59f | 1392 | if (ioflags & XFS_IO_INVIS) |
8a7141a8 | 1393 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; |
1da177e4 | 1394 | |
8a7141a8 | 1395 | error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, |
b972d079 | 1396 | (__force struct getbmap *)arg+1); |
1da177e4 | 1397 | if (error) |
2451337d | 1398 | return error; |
1da177e4 | 1399 | |
8a7141a8 ES |
1400 | /* copy back header - only size of getbmap */ |
1401 | if (copy_to_user(arg, &bmx, sizeof(struct getbmap))) | |
b474c7ae | 1402 | return -EFAULT; |
1da177e4 LT |
1403 | return 0; |
1404 | } | |
1405 | ||
8a7141a8 ES |
1406 | STATIC int |
1407 | xfs_getbmapx_format(void **ap, struct getbmapx *bmv, int *full) | |
1408 | { | |
b972d079 | 1409 | struct getbmapx __user *base = (struct getbmapx __user *)*ap; |
8a7141a8 ES |
1410 | |
1411 | if (copy_to_user(base, bmv, sizeof(struct getbmapx))) | |
2451337d | 1412 | return -EFAULT; |
8a7141a8 ES |
1413 | |
1414 | *ap += sizeof(struct getbmapx); | |
1415 | return 0; | |
1416 | } | |
1417 | ||
1da177e4 LT |
1418 | STATIC int |
1419 | xfs_ioc_getbmapx( | |
993386c1 | 1420 | struct xfs_inode *ip, |
1da177e4 LT |
1421 | void __user *arg) |
1422 | { | |
1423 | struct getbmapx bmx; | |
1da177e4 LT |
1424 | int error; |
1425 | ||
1426 | if (copy_from_user(&bmx, arg, sizeof(bmx))) | |
b474c7ae | 1427 | return -EFAULT; |
1da177e4 LT |
1428 | |
1429 | if (bmx.bmv_count < 2) | |
b474c7ae | 1430 | return -EINVAL; |
1da177e4 | 1431 | |
8a7141a8 | 1432 | if (bmx.bmv_iflags & (~BMV_IF_VALID)) |
b474c7ae | 1433 | return -EINVAL; |
1da177e4 | 1434 | |
8a7141a8 | 1435 | error = xfs_getbmap(ip, &bmx, xfs_getbmapx_format, |
b972d079 | 1436 | (__force struct getbmapx *)arg+1); |
1da177e4 | 1437 | if (error) |
2451337d | 1438 | return error; |
1da177e4 | 1439 | |
8a7141a8 ES |
1440 | /* copy back header */ |
1441 | if (copy_to_user(arg, &bmx, sizeof(struct getbmapx))) | |
b474c7ae | 1442 | return -EFAULT; |
1da177e4 LT |
1443 | |
1444 | return 0; | |
1445 | } | |
df26cfe8 | 1446 | |
a133d952 DC |
1447 | int |
1448 | xfs_ioc_swapext( | |
1449 | xfs_swapext_t *sxp) | |
1450 | { | |
1451 | xfs_inode_t *ip, *tip; | |
1452 | struct fd f, tmp; | |
1453 | int error = 0; | |
1454 | ||
1455 | /* Pull information for the target fd */ | |
1456 | f = fdget((int)sxp->sx_fdtarget); | |
1457 | if (!f.file) { | |
2451337d | 1458 | error = -EINVAL; |
a133d952 DC |
1459 | goto out; |
1460 | } | |
1461 | ||
1462 | if (!(f.file->f_mode & FMODE_WRITE) || | |
1463 | !(f.file->f_mode & FMODE_READ) || | |
1464 | (f.file->f_flags & O_APPEND)) { | |
2451337d | 1465 | error = -EBADF; |
a133d952 DC |
1466 | goto out_put_file; |
1467 | } | |
1468 | ||
1469 | tmp = fdget((int)sxp->sx_fdtmp); | |
1470 | if (!tmp.file) { | |
2451337d | 1471 | error = -EINVAL; |
a133d952 DC |
1472 | goto out_put_file; |
1473 | } | |
1474 | ||
1475 | if (!(tmp.file->f_mode & FMODE_WRITE) || | |
1476 | !(tmp.file->f_mode & FMODE_READ) || | |
1477 | (tmp.file->f_flags & O_APPEND)) { | |
2451337d | 1478 | error = -EBADF; |
a133d952 DC |
1479 | goto out_put_tmp_file; |
1480 | } | |
1481 | ||
1482 | if (IS_SWAPFILE(file_inode(f.file)) || | |
1483 | IS_SWAPFILE(file_inode(tmp.file))) { | |
2451337d | 1484 | error = -EINVAL; |
a133d952 DC |
1485 | goto out_put_tmp_file; |
1486 | } | |
1487 | ||
1488 | ip = XFS_I(file_inode(f.file)); | |
1489 | tip = XFS_I(file_inode(tmp.file)); | |
1490 | ||
1491 | if (ip->i_mount != tip->i_mount) { | |
2451337d | 1492 | error = -EINVAL; |
a133d952 DC |
1493 | goto out_put_tmp_file; |
1494 | } | |
1495 | ||
1496 | if (ip->i_ino == tip->i_ino) { | |
2451337d | 1497 | error = -EINVAL; |
a133d952 DC |
1498 | goto out_put_tmp_file; |
1499 | } | |
1500 | ||
1501 | if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { | |
2451337d | 1502 | error = -EIO; |
a133d952 DC |
1503 | goto out_put_tmp_file; |
1504 | } | |
1505 | ||
1506 | error = xfs_swap_extents(ip, tip, sxp); | |
1507 | ||
1508 | out_put_tmp_file: | |
1509 | fdput(tmp); | |
1510 | out_put_file: | |
1511 | fdput(f); | |
1512 | out: | |
1513 | return error; | |
1514 | } | |
1515 | ||
4d4be482 CH |
1516 | /* |
1517 | * Note: some of the ioctl's return positive numbers as a | |
1518 | * byte count indicating success, such as readlink_by_handle. | |
1519 | * So we don't "sign flip" like most other routines. This means | |
1520 | * true errors need to be returned as a negative value. | |
1521 | */ | |
1522 | long | |
1523 | xfs_file_ioctl( | |
df26cfe8 | 1524 | struct file *filp, |
df26cfe8 | 1525 | unsigned int cmd, |
4d4be482 | 1526 | unsigned long p) |
df26cfe8 | 1527 | { |
496ad9aa | 1528 | struct inode *inode = file_inode(filp); |
4d4be482 CH |
1529 | struct xfs_inode *ip = XFS_I(inode); |
1530 | struct xfs_mount *mp = ip->i_mount; | |
1531 | void __user *arg = (void __user *)p; | |
1532 | int ioflags = 0; | |
df26cfe8 LM |
1533 | int error; |
1534 | ||
4d4be482 | 1535 | if (filp->f_mode & FMODE_NOCMTIME) |
b92cc59f | 1536 | ioflags |= XFS_IO_INVIS; |
df26cfe8 | 1537 | |
cca28fb8 | 1538 | trace_xfs_file_ioctl(ip); |
4d4be482 CH |
1539 | |
1540 | switch (cmd) { | |
a46db608 CH |
1541 | case FITRIM: |
1542 | return xfs_ioc_trim(mp, arg); | |
df26cfe8 LM |
1543 | case XFS_IOC_ALLOCSP: |
1544 | case XFS_IOC_FREESP: | |
1545 | case XFS_IOC_RESVSP: | |
1546 | case XFS_IOC_UNRESVSP: | |
1547 | case XFS_IOC_ALLOCSP64: | |
1548 | case XFS_IOC_FREESP64: | |
1549 | case XFS_IOC_RESVSP64: | |
44722352 DC |
1550 | case XFS_IOC_UNRESVSP64: |
1551 | case XFS_IOC_ZERO_RANGE: { | |
743bb465 | 1552 | xfs_flock64_t bf; |
df26cfe8 | 1553 | |
743bb465 | 1554 | if (copy_from_user(&bf, arg, sizeof(bf))) |
b474c7ae | 1555 | return -EFAULT; |
743bb465 | 1556 | return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); |
1557 | } | |
df26cfe8 LM |
1558 | case XFS_IOC_DIOINFO: { |
1559 | struct dioattr da; | |
1560 | xfs_buftarg_t *target = | |
1561 | XFS_IS_REALTIME_INODE(ip) ? | |
1562 | mp->m_rtdev_targp : mp->m_ddev_targp; | |
1563 | ||
7c71ee78 | 1564 | da.d_mem = da.d_miniosz = target->bt_logical_sectorsize; |
df26cfe8 LM |
1565 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); |
1566 | ||
1567 | if (copy_to_user(arg, &da, sizeof(da))) | |
b474c7ae | 1568 | return -EFAULT; |
df26cfe8 LM |
1569 | return 0; |
1570 | } | |
1571 | ||
1572 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
1573 | case XFS_IOC_FSBULKSTAT: | |
1574 | case XFS_IOC_FSINUMBERS: | |
1575 | return xfs_ioc_bulkstat(mp, cmd, arg); | |
1576 | ||
1577 | case XFS_IOC_FSGEOMETRY_V1: | |
1578 | return xfs_ioc_fsgeometry_v1(mp, arg); | |
1579 | ||
1580 | case XFS_IOC_FSGEOMETRY: | |
1581 | return xfs_ioc_fsgeometry(mp, arg); | |
1582 | ||
1583 | case XFS_IOC_GETVERSION: | |
1584 | return put_user(inode->i_generation, (int __user *)arg); | |
1585 | ||
1586 | case XFS_IOC_FSGETXATTR: | |
1587 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
1588 | case XFS_IOC_FSGETXATTRA: | |
1589 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
1590 | case XFS_IOC_FSSETXATTR: |
1591 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 1592 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 1593 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 1594 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 1595 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 LM |
1596 | |
1597 | case XFS_IOC_FSSETDM: { | |
1598 | struct fsdmidata dmi; | |
1599 | ||
1600 | if (copy_from_user(&dmi, arg, sizeof(dmi))) | |
b474c7ae | 1601 | return -EFAULT; |
df26cfe8 | 1602 | |
d9457dc0 JK |
1603 | error = mnt_want_write_file(filp); |
1604 | if (error) | |
1605 | return error; | |
1606 | ||
df26cfe8 LM |
1607 | error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask, |
1608 | dmi.fsd_dmstate); | |
d9457dc0 | 1609 | mnt_drop_write_file(filp); |
2451337d | 1610 | return error; |
df26cfe8 LM |
1611 | } |
1612 | ||
1613 | case XFS_IOC_GETBMAP: | |
1614 | case XFS_IOC_GETBMAPA: | |
1615 | return xfs_ioc_getbmap(ip, ioflags, cmd, arg); | |
1616 | ||
1617 | case XFS_IOC_GETBMAPX: | |
1618 | return xfs_ioc_getbmapx(ip, arg); | |
1619 | ||
1620 | case XFS_IOC_FD_TO_HANDLE: | |
1621 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 1622 | case XFS_IOC_PATH_TO_FSHANDLE: { |
1623 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1624 | |
743bb465 | 1625 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
b474c7ae | 1626 | return -EFAULT; |
743bb465 | 1627 | return xfs_find_handle(cmd, &hreq); |
1628 | } | |
1629 | case XFS_IOC_OPEN_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_open_by_handle(filp, &hreq); |
743bb465 | 1635 | } |
df26cfe8 | 1636 | case XFS_IOC_FSSETDM_BY_HANDLE: |
d296d30a | 1637 | return xfs_fssetdm_by_handle(filp, arg); |
df26cfe8 | 1638 | |
743bb465 | 1639 | case XFS_IOC_READLINK_BY_HANDLE: { |
1640 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 1641 | |
743bb465 | 1642 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 1643 | return -EFAULT; |
d296d30a | 1644 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 1645 | } |
df26cfe8 | 1646 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 1647 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
1648 | |
1649 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 1650 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
1651 | |
1652 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 1653 | struct xfs_swapext sxp; |
1654 | ||
1655 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
b474c7ae | 1656 | return -EFAULT; |
d9457dc0 JK |
1657 | error = mnt_want_write_file(filp); |
1658 | if (error) | |
1659 | return error; | |
a133d952 | 1660 | error = xfs_ioc_swapext(&sxp); |
d9457dc0 | 1661 | mnt_drop_write_file(filp); |
2451337d | 1662 | return error; |
df26cfe8 LM |
1663 | } |
1664 | ||
1665 | case XFS_IOC_FSCOUNTS: { | |
1666 | xfs_fsop_counts_t out; | |
1667 | ||
1668 | error = xfs_fs_counts(mp, &out); | |
1669 | if (error) | |
2451337d | 1670 | return error; |
df26cfe8 LM |
1671 | |
1672 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 1673 | return -EFAULT; |
df26cfe8 LM |
1674 | return 0; |
1675 | } | |
1676 | ||
1677 | case XFS_IOC_SET_RESBLKS: { | |
1678 | xfs_fsop_resblks_t inout; | |
1679 | __uint64_t in; | |
1680 | ||
1681 | if (!capable(CAP_SYS_ADMIN)) | |
1682 | return -EPERM; | |
1683 | ||
d5db0f97 | 1684 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
b474c7ae | 1685 | return -EROFS; |
d5db0f97 | 1686 | |
df26cfe8 | 1687 | if (copy_from_user(&inout, arg, sizeof(inout))) |
b474c7ae | 1688 | return -EFAULT; |
df26cfe8 | 1689 | |
d9457dc0 JK |
1690 | error = mnt_want_write_file(filp); |
1691 | if (error) | |
1692 | return error; | |
1693 | ||
df26cfe8 LM |
1694 | /* input parameter is passed in resblks field of structure */ |
1695 | in = inout.resblks; | |
1696 | error = xfs_reserve_blocks(mp, &in, &inout); | |
d9457dc0 | 1697 | mnt_drop_write_file(filp); |
df26cfe8 | 1698 | if (error) |
2451337d | 1699 | return error; |
df26cfe8 LM |
1700 | |
1701 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
b474c7ae | 1702 | return -EFAULT; |
df26cfe8 LM |
1703 | return 0; |
1704 | } | |
1705 | ||
1706 | case XFS_IOC_GET_RESBLKS: { | |
1707 | xfs_fsop_resblks_t out; | |
1708 | ||
1709 | if (!capable(CAP_SYS_ADMIN)) | |
1710 | return -EPERM; | |
1711 | ||
1712 | error = xfs_reserve_blocks(mp, NULL, &out); | |
1713 | if (error) | |
2451337d | 1714 | return error; |
df26cfe8 LM |
1715 | |
1716 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 1717 | return -EFAULT; |
df26cfe8 LM |
1718 | |
1719 | return 0; | |
1720 | } | |
1721 | ||
1722 | case XFS_IOC_FSGROWFSDATA: { | |
1723 | xfs_growfs_data_t in; | |
1724 | ||
df26cfe8 | 1725 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1726 | return -EFAULT; |
df26cfe8 | 1727 | |
d9457dc0 JK |
1728 | error = mnt_want_write_file(filp); |
1729 | if (error) | |
1730 | return error; | |
df26cfe8 | 1731 | error = xfs_growfs_data(mp, &in); |
d9457dc0 | 1732 | mnt_drop_write_file(filp); |
2451337d | 1733 | return error; |
df26cfe8 LM |
1734 | } |
1735 | ||
1736 | case XFS_IOC_FSGROWFSLOG: { | |
1737 | xfs_growfs_log_t in; | |
1738 | ||
df26cfe8 | 1739 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1740 | return -EFAULT; |
df26cfe8 | 1741 | |
d9457dc0 JK |
1742 | error = mnt_want_write_file(filp); |
1743 | if (error) | |
1744 | return error; | |
df26cfe8 | 1745 | error = xfs_growfs_log(mp, &in); |
d9457dc0 | 1746 | mnt_drop_write_file(filp); |
2451337d | 1747 | return error; |
df26cfe8 LM |
1748 | } |
1749 | ||
1750 | case XFS_IOC_FSGROWFSRT: { | |
1751 | xfs_growfs_rt_t in; | |
1752 | ||
df26cfe8 | 1753 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 1754 | return -EFAULT; |
df26cfe8 | 1755 | |
d9457dc0 JK |
1756 | error = mnt_want_write_file(filp); |
1757 | if (error) | |
1758 | return error; | |
df26cfe8 | 1759 | error = xfs_growfs_rt(mp, &in); |
d9457dc0 | 1760 | mnt_drop_write_file(filp); |
2451337d | 1761 | return error; |
df26cfe8 LM |
1762 | } |
1763 | ||
df26cfe8 LM |
1764 | case XFS_IOC_GOINGDOWN: { |
1765 | __uint32_t in; | |
1766 | ||
1767 | if (!capable(CAP_SYS_ADMIN)) | |
1768 | return -EPERM; | |
1769 | ||
1770 | if (get_user(in, (__uint32_t __user *)arg)) | |
b474c7ae | 1771 | return -EFAULT; |
df26cfe8 | 1772 | |
2451337d | 1773 | return xfs_fs_goingdown(mp, in); |
df26cfe8 LM |
1774 | } |
1775 | ||
1776 | case XFS_IOC_ERROR_INJECTION: { | |
1777 | xfs_error_injection_t in; | |
1778 | ||
1779 | if (!capable(CAP_SYS_ADMIN)) | |
1780 | return -EPERM; | |
1781 | ||
1782 | if (copy_from_user(&in, arg, sizeof(in))) | |
b474c7ae | 1783 | return -EFAULT; |
df26cfe8 | 1784 | |
2451337d | 1785 | return xfs_errortag_add(in.errtag, mp); |
df26cfe8 LM |
1786 | } |
1787 | ||
1788 | case XFS_IOC_ERROR_CLEARALL: | |
1789 | if (!capable(CAP_SYS_ADMIN)) | |
1790 | return -EPERM; | |
1791 | ||
2451337d | 1792 | return xfs_errortag_clearall(mp, 1); |
df26cfe8 | 1793 | |
8ca149de | 1794 | case XFS_IOC_FREE_EOFBLOCKS: { |
b9fe5052 DE |
1795 | struct xfs_fs_eofblocks eofb; |
1796 | struct xfs_eofblocks keofb; | |
8ca149de | 1797 | |
8c567a7f DE |
1798 | if (!capable(CAP_SYS_ADMIN)) |
1799 | return -EPERM; | |
1800 | ||
1801 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
b474c7ae | 1802 | return -EROFS; |
8c567a7f | 1803 | |
8ca149de | 1804 | if (copy_from_user(&eofb, arg, sizeof(eofb))) |
b474c7ae | 1805 | return -EFAULT; |
8ca149de | 1806 | |
b9fe5052 DE |
1807 | error = xfs_fs_eofblocks_from_user(&eofb, &keofb); |
1808 | if (error) | |
2451337d | 1809 | return error; |
8ca149de | 1810 | |
2451337d | 1811 | return xfs_icache_free_eofblocks(mp, &keofb); |
8ca149de BF |
1812 | } |
1813 | ||
df26cfe8 LM |
1814 | default: |
1815 | return -ENOTTY; | |
1816 | } | |
1817 | } |