Commit | Line | Data |
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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
7b718769 NS |
3 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
1da177e4 | 5 | */ |
1da177e4 | 6 | #include "xfs.h" |
1da177e4 | 7 | #include "xfs_fs.h" |
70a9883c | 8 | #include "xfs_shared.h" |
239880ef DC |
9 | #include "xfs_format.h" |
10 | #include "xfs_log_format.h" | |
11 | #include "xfs_trans_resv.h" | |
1da177e4 | 12 | #include "xfs_mount.h" |
1da177e4 | 13 | #include "xfs_inode.h" |
1da177e4 | 14 | #include "xfs_rtalloc.h" |
2810bd68 | 15 | #include "xfs_iwalk.h" |
1da177e4 | 16 | #include "xfs_itable.h" |
a844f451 | 17 | #include "xfs_error.h" |
1da177e4 | 18 | #include "xfs_attr.h" |
a844f451 | 19 | #include "xfs_bmap.h" |
68988114 | 20 | #include "xfs_bmap_util.h" |
1da177e4 | 21 | #include "xfs_fsops.h" |
a46db608 | 22 | #include "xfs_discard.h" |
25fe55e8 | 23 | #include "xfs_quota.h" |
d296d30a | 24 | #include "xfs_export.h" |
0b1b213f | 25 | #include "xfs_trace.h" |
8ca149de | 26 | #include "xfs_icache.h" |
a4fbe6ab | 27 | #include "xfs_trans.h" |
47e1bf64 | 28 | #include "xfs_acl.h" |
e89c0413 DW |
29 | #include "xfs_btree.h" |
30 | #include <linux/fsmap.h> | |
31 | #include "xfs_fsmap.h" | |
36fd6e86 | 32 | #include "scrub/xfs_scrub.h" |
c368ebcd | 33 | #include "xfs_sb.h" |
7cd5006b | 34 | #include "xfs_ag.h" |
c23232d4 | 35 | #include "xfs_health.h" |
7a42c70e | 36 | #include "xfs_reflink.h" |
5f213ddb | 37 | #include "xfs_ioctl.h" |
a2544622 CH |
38 | #include "xfs_da_format.h" |
39 | #include "xfs_da_btree.h" | |
1da177e4 | 40 | |
1da177e4 LT |
41 | #include <linux/mount.h> |
42 | #include <linux/namei.h> | |
1da177e4 LT |
43 | |
44 | /* | |
45 | * xfs_find_handle maps from userspace xfs_fsop_handlereq structure to | |
46 | * a file or fs handle. | |
47 | * | |
48 | * XFS_IOC_PATH_TO_FSHANDLE | |
49 | * returns fs handle for a mount point or path within that mount point | |
50 | * XFS_IOC_FD_TO_HANDLE | |
51 | * returns full handle for a FD opened in user space | |
52 | * XFS_IOC_PATH_TO_HANDLE | |
53 | * returns full handle for a path | |
54 | */ | |
d5547f9f | 55 | int |
1da177e4 LT |
56 | xfs_find_handle( |
57 | unsigned int cmd, | |
743bb465 | 58 | xfs_fsop_handlereq_t *hreq) |
1da177e4 LT |
59 | { |
60 | int hsize; | |
61 | xfs_handle_t handle; | |
1da177e4 | 62 | struct inode *inode; |
a30b0367 | 63 | struct fd f = {NULL}; |
4346cdd4 | 64 | struct path path; |
2903ff01 | 65 | int error; |
4346cdd4 | 66 | struct xfs_inode *ip; |
1da177e4 | 67 | |
4346cdd4 | 68 | if (cmd == XFS_IOC_FD_TO_HANDLE) { |
2903ff01 AV |
69 | f = fdget(hreq->fd); |
70 | if (!f.file) | |
4346cdd4 | 71 | return -EBADF; |
496ad9aa | 72 | inode = file_inode(f.file); |
4346cdd4 | 73 | } else { |
ce6595a2 | 74 | error = user_path_at(AT_FDCWD, hreq->path, 0, &path); |
4346cdd4 CH |
75 | if (error) |
76 | return error; | |
2b0143b5 | 77 | inode = d_inode(path.dentry); |
1da177e4 | 78 | } |
4346cdd4 CH |
79 | ip = XFS_I(inode); |
80 | ||
81 | /* | |
82 | * We can only generate handles for inodes residing on a XFS filesystem, | |
83 | * and only for regular files, directories or symbolic links. | |
84 | */ | |
85 | error = -EINVAL; | |
86 | if (inode->i_sb->s_magic != XFS_SB_MAGIC) | |
87 | goto out_put; | |
88 | ||
89 | error = -EBADF; | |
90 | if (!S_ISREG(inode->i_mode) && | |
91 | !S_ISDIR(inode->i_mode) && | |
92 | !S_ISLNK(inode->i_mode)) | |
93 | goto out_put; | |
94 | ||
95 | ||
96 | memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t)); | |
97 | ||
98 | if (cmd == XFS_IOC_PATH_TO_FSHANDLE) { | |
99 | /* | |
100 | * This handle only contains an fsid, zero the rest. | |
101 | */ | |
102 | memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); | |
103 | hsize = sizeof(xfs_fsid_t); | |
104 | } else { | |
c6143911 CH |
105 | handle.ha_fid.fid_len = sizeof(xfs_fid_t) - |
106 | sizeof(handle.ha_fid.fid_len); | |
107 | handle.ha_fid.fid_pad = 0; | |
9e9a2674 | 108 | handle.ha_fid.fid_gen = inode->i_generation; |
c6143911 | 109 | handle.ha_fid.fid_ino = ip->i_ino; |
3398a400 | 110 | hsize = sizeof(xfs_handle_t); |
1da177e4 LT |
111 | } |
112 | ||
4346cdd4 | 113 | error = -EFAULT; |
743bb465 | 114 | if (copy_to_user(hreq->ohandle, &handle, hsize) || |
4346cdd4 CH |
115 | copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) |
116 | goto out_put; | |
1da177e4 | 117 | |
4346cdd4 CH |
118 | error = 0; |
119 | ||
120 | out_put: | |
121 | if (cmd == XFS_IOC_FD_TO_HANDLE) | |
2903ff01 | 122 | fdput(f); |
4346cdd4 CH |
123 | else |
124 | path_put(&path); | |
125 | return error; | |
1da177e4 LT |
126 | } |
127 | ||
1da177e4 | 128 | /* |
d296d30a CH |
129 | * No need to do permission checks on the various pathname components |
130 | * as the handle operations are privileged. | |
1da177e4 LT |
131 | */ |
132 | STATIC int | |
d296d30a CH |
133 | xfs_handle_acceptable( |
134 | void *context, | |
135 | struct dentry *dentry) | |
136 | { | |
137 | return 1; | |
138 | } | |
139 | ||
140 | /* | |
141 | * Convert userspace handle data into a dentry. | |
142 | */ | |
143 | struct dentry * | |
144 | xfs_handle_to_dentry( | |
145 | struct file *parfilp, | |
146 | void __user *uhandle, | |
147 | u32 hlen) | |
1da177e4 | 148 | { |
1da177e4 | 149 | xfs_handle_t handle; |
d296d30a | 150 | struct xfs_fid64 fid; |
1da177e4 LT |
151 | |
152 | /* | |
153 | * Only allow handle opens under a directory. | |
154 | */ | |
496ad9aa | 155 | if (!S_ISDIR(file_inode(parfilp)->i_mode)) |
d296d30a CH |
156 | return ERR_PTR(-ENOTDIR); |
157 | ||
158 | if (hlen != sizeof(xfs_handle_t)) | |
159 | return ERR_PTR(-EINVAL); | |
160 | if (copy_from_user(&handle, uhandle, hlen)) | |
161 | return ERR_PTR(-EFAULT); | |
162 | if (handle.ha_fid.fid_len != | |
163 | sizeof(handle.ha_fid) - sizeof(handle.ha_fid.fid_len)) | |
164 | return ERR_PTR(-EINVAL); | |
165 | ||
166 | memset(&fid, 0, sizeof(struct fid)); | |
167 | fid.ino = handle.ha_fid.fid_ino; | |
168 | fid.gen = handle.ha_fid.fid_gen; | |
169 | ||
170 | return exportfs_decode_fh(parfilp->f_path.mnt, (struct fid *)&fid, 3, | |
171 | FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG, | |
172 | xfs_handle_acceptable, NULL); | |
173 | } | |
1da177e4 | 174 | |
d296d30a CH |
175 | STATIC struct dentry * |
176 | xfs_handlereq_to_dentry( | |
177 | struct file *parfilp, | |
178 | xfs_fsop_handlereq_t *hreq) | |
179 | { | |
180 | return xfs_handle_to_dentry(parfilp, hreq->ihandle, hreq->ihandlen); | |
1da177e4 LT |
181 | } |
182 | ||
d5547f9f | 183 | int |
1da177e4 | 184 | xfs_open_by_handle( |
1da177e4 | 185 | struct file *parfilp, |
d296d30a | 186 | xfs_fsop_handlereq_t *hreq) |
1da177e4 | 187 | { |
745ca247 | 188 | const struct cred *cred = current_cred(); |
1da177e4 | 189 | int error; |
d296d30a | 190 | int fd; |
1da177e4 LT |
191 | int permflag; |
192 | struct file *filp; | |
193 | struct inode *inode; | |
194 | struct dentry *dentry; | |
1a1d7724 | 195 | fmode_t fmode; |
765927b2 | 196 | struct path path; |
1da177e4 LT |
197 | |
198 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 199 | return -EPERM; |
1da177e4 | 200 | |
d296d30a CH |
201 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
202 | if (IS_ERR(dentry)) | |
203 | return PTR_ERR(dentry); | |
2b0143b5 | 204 | inode = d_inode(dentry); |
1da177e4 LT |
205 | |
206 | /* Restrict xfs_open_by_handle to directories & regular files. */ | |
207 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) { | |
b474c7ae | 208 | error = -EPERM; |
d296d30a | 209 | goto out_dput; |
1da177e4 LT |
210 | } |
211 | ||
212 | #if BITS_PER_LONG != 32 | |
743bb465 | 213 | hreq->oflags |= O_LARGEFILE; |
1da177e4 | 214 | #endif |
d296d30a | 215 | |
743bb465 | 216 | permflag = hreq->oflags; |
1a1d7724 | 217 | fmode = OPEN_FMODE(permflag); |
1da177e4 | 218 | if ((!(permflag & O_APPEND) || (permflag & O_TRUNC)) && |
1a1d7724 | 219 | (fmode & FMODE_WRITE) && IS_APPEND(inode)) { |
b474c7ae | 220 | error = -EPERM; |
d296d30a | 221 | goto out_dput; |
1da177e4 LT |
222 | } |
223 | ||
1a1d7724 | 224 | if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { |
337684a1 | 225 | error = -EPERM; |
d296d30a | 226 | goto out_dput; |
1da177e4 LT |
227 | } |
228 | ||
229 | /* Can't write directories. */ | |
1a1d7724 | 230 | if (S_ISDIR(inode->i_mode) && (fmode & FMODE_WRITE)) { |
b474c7ae | 231 | error = -EISDIR; |
d296d30a | 232 | goto out_dput; |
1da177e4 LT |
233 | } |
234 | ||
862a6293 | 235 | fd = get_unused_fd_flags(0); |
d296d30a CH |
236 | if (fd < 0) { |
237 | error = fd; | |
238 | goto out_dput; | |
1da177e4 LT |
239 | } |
240 | ||
765927b2 AV |
241 | path.mnt = parfilp->f_path.mnt; |
242 | path.dentry = dentry; | |
243 | filp = dentry_open(&path, hreq->oflags, cred); | |
244 | dput(dentry); | |
1da177e4 | 245 | if (IS_ERR(filp)) { |
d296d30a CH |
246 | put_unused_fd(fd); |
247 | return PTR_ERR(filp); | |
1da177e4 | 248 | } |
4d4be482 | 249 | |
03209378 | 250 | if (S_ISREG(inode->i_mode)) { |
2e2e7bb1 | 251 | filp->f_flags |= O_NOATIME; |
4d4be482 | 252 | filp->f_mode |= FMODE_NOCMTIME; |
2e2e7bb1 | 253 | } |
1da177e4 | 254 | |
d296d30a CH |
255 | fd_install(fd, filp); |
256 | return fd; | |
257 | ||
258 | out_dput: | |
259 | dput(dentry); | |
260 | return error; | |
1da177e4 LT |
261 | } |
262 | ||
d5547f9f | 263 | int |
1da177e4 | 264 | xfs_readlink_by_handle( |
d296d30a CH |
265 | struct file *parfilp, |
266 | xfs_fsop_handlereq_t *hreq) | |
1da177e4 | 267 | { |
d296d30a | 268 | struct dentry *dentry; |
1da177e4 | 269 | __u32 olen; |
804c83c3 | 270 | int error; |
1da177e4 LT |
271 | |
272 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 273 | return -EPERM; |
1da177e4 | 274 | |
d296d30a CH |
275 | dentry = xfs_handlereq_to_dentry(parfilp, hreq); |
276 | if (IS_ERR(dentry)) | |
277 | return PTR_ERR(dentry); | |
1da177e4 LT |
278 | |
279 | /* Restrict this handle operation to symlinks only. */ | |
fd4a0edf | 280 | if (!d_is_symlink(dentry)) { |
b474c7ae | 281 | error = -EINVAL; |
d296d30a | 282 | goto out_dput; |
1da177e4 LT |
283 | } |
284 | ||
743bb465 | 285 | if (copy_from_user(&olen, hreq->ohandlen, sizeof(__u32))) { |
b474c7ae | 286 | error = -EFAULT; |
d296d30a | 287 | goto out_dput; |
1da177e4 | 288 | } |
1da177e4 | 289 | |
fd4a0edf | 290 | error = vfs_readlink(dentry, hreq->ohandle, olen); |
67fcaa73 | 291 | |
d296d30a CH |
292 | out_dput: |
293 | dput(dentry); | |
804c83c3 | 294 | return error; |
1da177e4 LT |
295 | } |
296 | ||
3e7a7799 CH |
297 | /* |
298 | * Format an attribute and copy it out to the user's buffer. | |
299 | * Take care to check values and protect against them changing later, | |
300 | * we may be reading them directly out of a user buffer. | |
301 | */ | |
302 | static void | |
303 | xfs_ioc_attr_put_listent( | |
304 | struct xfs_attr_list_context *context, | |
305 | int flags, | |
306 | unsigned char *name, | |
307 | int namelen, | |
308 | int valuelen) | |
309 | { | |
310 | struct xfs_attrlist *alist = context->buffer; | |
311 | struct xfs_attrlist_ent *aep; | |
312 | int arraytop; | |
313 | ||
314 | ASSERT(!context->seen_enough); | |
315 | ASSERT(context->count >= 0); | |
316 | ASSERT(context->count < (ATTR_MAX_VALUELEN/8)); | |
317 | ASSERT(context->firstu >= sizeof(*alist)); | |
318 | ASSERT(context->firstu <= context->bufsize); | |
319 | ||
320 | /* | |
321 | * Only list entries in the right namespace. | |
322 | */ | |
d5f0f49a | 323 | if (context->attr_filter != (flags & XFS_ATTR_NSP_ONDISK_MASK)) |
3e7a7799 CH |
324 | return; |
325 | ||
326 | arraytop = sizeof(*alist) + | |
327 | context->count * sizeof(alist->al_offset[0]); | |
328 | ||
329 | /* decrement by the actual bytes used by the attr */ | |
330 | context->firstu -= round_up(offsetof(struct xfs_attrlist_ent, a_name) + | |
331 | namelen + 1, sizeof(uint32_t)); | |
332 | if (context->firstu < arraytop) { | |
333 | trace_xfs_attr_list_full(context); | |
334 | alist->al_more = 1; | |
335 | context->seen_enough = 1; | |
336 | return; | |
337 | } | |
338 | ||
339 | aep = context->buffer + context->firstu; | |
340 | aep->a_valuelen = valuelen; | |
341 | memcpy(aep->a_name, name, namelen); | |
342 | aep->a_name[namelen] = 0; | |
343 | alist->al_offset[context->count++] = context->firstu; | |
344 | alist->al_count = context->count; | |
345 | trace_xfs_attr_list_add(context); | |
346 | } | |
347 | ||
d5f0f49a CH |
348 | static unsigned int |
349 | xfs_attr_filter( | |
350 | u32 ioc_flags) | |
351 | { | |
352 | if (ioc_flags & XFS_IOC_ATTR_ROOT) | |
353 | return XFS_ATTR_ROOT; | |
354 | if (ioc_flags & XFS_IOC_ATTR_SECURE) | |
355 | return XFS_ATTR_SECURE; | |
356 | return 0; | |
357 | } | |
358 | ||
359 | static unsigned int | |
360 | xfs_attr_flags( | |
361 | u32 ioc_flags) | |
362 | { | |
363 | if (ioc_flags & XFS_IOC_ATTR_CREATE) | |
364 | return XATTR_CREATE; | |
365 | if (ioc_flags & XFS_IOC_ATTR_REPLACE) | |
366 | return XATTR_REPLACE; | |
367 | return 0; | |
368 | } | |
369 | ||
3e7a7799 CH |
370 | int |
371 | xfs_ioc_attr_list( | |
372 | struct xfs_inode *dp, | |
eb241c74 | 373 | void __user *ubuf, |
3e7a7799 CH |
374 | int bufsize, |
375 | int flags, | |
53ac39fd | 376 | struct xfs_attrlist_cursor __user *ucursor) |
3e7a7799 | 377 | { |
e3a19cde | 378 | struct xfs_attr_list_context context = { }; |
3e7a7799 | 379 | struct xfs_attrlist *alist; |
eb241c74 | 380 | void *buffer; |
3e7a7799 CH |
381 | int error; |
382 | ||
f6046319 CH |
383 | if (bufsize < sizeof(struct xfs_attrlist) || |
384 | bufsize > XFS_XATTR_LIST_MAX) | |
385 | return -EINVAL; | |
386 | ||
387 | /* | |
388 | * Reject flags, only allow namespaces. | |
389 | */ | |
d5f0f49a | 390 | if (flags & ~(XFS_IOC_ATTR_ROOT | XFS_IOC_ATTR_SECURE)) |
f6046319 | 391 | return -EINVAL; |
d5f0f49a | 392 | if (flags == (XFS_IOC_ATTR_ROOT | XFS_IOC_ATTR_SECURE)) |
f6046319 CH |
393 | return -EINVAL; |
394 | ||
3e7a7799 CH |
395 | /* |
396 | * Validate the cursor. | |
397 | */ | |
e3a19cde | 398 | if (copy_from_user(&context.cursor, ucursor, sizeof(context.cursor))) |
53ac39fd | 399 | return -EFAULT; |
e3a19cde | 400 | if (context.cursor.pad1 || context.cursor.pad2) |
3e7a7799 | 401 | return -EINVAL; |
e3a19cde CH |
402 | if (!context.cursor.initted && |
403 | (context.cursor.hashval || context.cursor.blkno || | |
404 | context.cursor.offset)) | |
3e7a7799 CH |
405 | return -EINVAL; |
406 | ||
eb241c74 CH |
407 | buffer = kmem_zalloc_large(bufsize, 0); |
408 | if (!buffer) | |
409 | return -ENOMEM; | |
3e7a7799 CH |
410 | |
411 | /* | |
412 | * Initialize the output buffer. | |
413 | */ | |
3e7a7799 | 414 | context.dp = dp; |
3e7a7799 | 415 | context.resynch = 1; |
d5f0f49a | 416 | context.attr_filter = xfs_attr_filter(flags); |
3e7a7799 | 417 | context.buffer = buffer; |
f311d771 | 418 | context.bufsize = round_down(bufsize, sizeof(uint32_t)); |
3e7a7799 CH |
419 | context.firstu = context.bufsize; |
420 | context.put_listent = xfs_ioc_attr_put_listent; | |
421 | ||
422 | alist = context.buffer; | |
423 | alist->al_count = 0; | |
424 | alist->al_more = 0; | |
425 | alist->al_offset[0] = context.bufsize; | |
426 | ||
17e1dd83 | 427 | error = xfs_attr_list(&context); |
eb241c74 CH |
428 | if (error) |
429 | goto out_free; | |
430 | ||
53ac39fd | 431 | if (copy_to_user(ubuf, buffer, bufsize) || |
e3a19cde | 432 | copy_to_user(ucursor, &context.cursor, sizeof(context.cursor))) |
eb241c74 CH |
433 | error = -EFAULT; |
434 | out_free: | |
435 | kmem_free(buffer); | |
3e7a7799 CH |
436 | return error; |
437 | } | |
438 | ||
1da177e4 LT |
439 | STATIC int |
440 | xfs_attrlist_by_handle( | |
d296d30a | 441 | struct file *parfilp, |
53ac39fd | 442 | struct xfs_fsop_attrlist_handlereq __user *p) |
1da177e4 | 443 | { |
53ac39fd | 444 | struct xfs_fsop_attrlist_handlereq al_hreq; |
d296d30a | 445 | struct dentry *dentry; |
53ac39fd | 446 | int error = -ENOMEM; |
1da177e4 LT |
447 | |
448 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 449 | return -EPERM; |
53ac39fd | 450 | if (copy_from_user(&al_hreq, p, sizeof(al_hreq))) |
b474c7ae | 451 | return -EFAULT; |
90ad58a8 | 452 | |
d296d30a CH |
453 | dentry = xfs_handlereq_to_dentry(parfilp, &al_hreq.hreq); |
454 | if (IS_ERR(dentry)) | |
455 | return PTR_ERR(dentry); | |
1da177e4 | 456 | |
eb241c74 | 457 | error = xfs_ioc_attr_list(XFS_I(d_inode(dentry)), al_hreq.buffer, |
53ac39fd | 458 | al_hreq.buflen, al_hreq.flags, &p->pos); |
d296d30a CH |
459 | dput(dentry); |
460 | return error; | |
1da177e4 LT |
461 | } |
462 | ||
d0ce6439 | 463 | static int |
1da177e4 | 464 | xfs_attrmulti_attr_get( |
739bfb2a | 465 | struct inode *inode, |
a9273ca5 DC |
466 | unsigned char *name, |
467 | unsigned char __user *ubuf, | |
c8ce540d DW |
468 | uint32_t *len, |
469 | uint32_t flags) | |
1da177e4 | 470 | { |
e5171d7e CH |
471 | struct xfs_da_args args = { |
472 | .dp = XFS_I(inode), | |
d5f0f49a CH |
473 | .attr_filter = xfs_attr_filter(flags), |
474 | .attr_flags = xfs_attr_flags(flags), | |
e5171d7e CH |
475 | .name = name, |
476 | .namelen = strlen(name), | |
477 | .valuelen = *len, | |
478 | }; | |
479 | int error; | |
e8b0ebaa | 480 | |
51fcbfe7 | 481 | if (*len > XFS_XATTR_SIZE_MAX) |
2451337d | 482 | return -EINVAL; |
e5171d7e | 483 | |
e5171d7e | 484 | error = xfs_attr_get(&args); |
1da177e4 LT |
485 | if (error) |
486 | goto out_kfree; | |
487 | ||
e5171d7e CH |
488 | *len = args.valuelen; |
489 | if (copy_to_user(ubuf, args.value, args.valuelen)) | |
2451337d | 490 | error = -EFAULT; |
1da177e4 | 491 | |
fdd3ccee | 492 | out_kfree: |
e5171d7e | 493 | kmem_free(args.value); |
1da177e4 LT |
494 | return error; |
495 | } | |
496 | ||
d0ce6439 | 497 | static int |
1da177e4 | 498 | xfs_attrmulti_attr_set( |
739bfb2a | 499 | struct inode *inode, |
a9273ca5 DC |
500 | unsigned char *name, |
501 | const unsigned char __user *ubuf, | |
c8ce540d DW |
502 | uint32_t len, |
503 | uint32_t flags) | |
1da177e4 | 504 | { |
a2544622 CH |
505 | struct xfs_da_args args = { |
506 | .dp = XFS_I(inode), | |
d5f0f49a CH |
507 | .attr_filter = xfs_attr_filter(flags), |
508 | .attr_flags = xfs_attr_flags(flags), | |
a2544622 CH |
509 | .name = name, |
510 | .namelen = strlen(name), | |
511 | }; | |
09cb22d2 | 512 | int error; |
1da177e4 | 513 | |
739bfb2a | 514 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
2451337d | 515 | return -EPERM; |
1da177e4 | 516 | |
6cc4f4ff CH |
517 | if (ubuf) { |
518 | if (len > XFS_XATTR_SIZE_MAX) | |
519 | return -EINVAL; | |
a2544622 CH |
520 | args.value = memdup_user(ubuf, len); |
521 | if (IS_ERR(args.value)) | |
522 | return PTR_ERR(args.value); | |
523 | args.valuelen = len; | |
6cc4f4ff | 524 | } |
e8b0ebaa | 525 | |
a2544622 | 526 | error = xfs_attr_set(&args); |
d5f0f49a | 527 | if (!error && (flags & XFS_IOC_ATTR_ROOT)) |
5a3930e2 | 528 | xfs_forget_acl(inode, name); |
a2544622 | 529 | kfree(args.value); |
09cb22d2 | 530 | return error; |
1da177e4 LT |
531 | } |
532 | ||
d0ce6439 CH |
533 | int |
534 | xfs_ioc_attrmulti_one( | |
535 | struct file *parfilp, | |
536 | struct inode *inode, | |
537 | uint32_t opcode, | |
538 | void __user *uname, | |
539 | void __user *value, | |
540 | uint32_t *len, | |
541 | uint32_t flags) | |
542 | { | |
543 | unsigned char *name; | |
544 | int error; | |
545 | ||
d5f0f49a | 546 | if ((flags & XFS_IOC_ATTR_ROOT) && (flags & XFS_IOC_ATTR_SECURE)) |
d0ce6439 | 547 | return -EINVAL; |
d0ce6439 CH |
548 | |
549 | name = strndup_user(uname, MAXNAMELEN); | |
550 | if (IS_ERR(name)) | |
551 | return PTR_ERR(name); | |
552 | ||
553 | switch (opcode) { | |
554 | case ATTR_OP_GET: | |
555 | error = xfs_attrmulti_attr_get(inode, name, value, len, flags); | |
556 | break; | |
557 | case ATTR_OP_REMOVE: | |
558 | value = NULL; | |
559 | *len = 0; | |
560 | /* fall through */ | |
561 | case ATTR_OP_SET: | |
562 | error = mnt_want_write_file(parfilp); | |
563 | if (error) | |
564 | break; | |
565 | error = xfs_attrmulti_attr_set(inode, name, value, *len, flags); | |
566 | mnt_drop_write_file(parfilp); | |
567 | break; | |
568 | default: | |
569 | error = -EINVAL; | |
570 | break; | |
571 | } | |
572 | ||
573 | kfree(name); | |
574 | return error; | |
575 | } | |
576 | ||
1da177e4 LT |
577 | STATIC int |
578 | xfs_attrmulti_by_handle( | |
42a74f20 | 579 | struct file *parfilp, |
d296d30a | 580 | void __user *arg) |
1da177e4 LT |
581 | { |
582 | int error; | |
583 | xfs_attr_multiop_t *ops; | |
584 | xfs_fsop_attrmulti_handlereq_t am_hreq; | |
d296d30a | 585 | struct dentry *dentry; |
1da177e4 | 586 | unsigned int i, size; |
1da177e4 LT |
587 | |
588 | if (!capable(CAP_SYS_ADMIN)) | |
b474c7ae | 589 | return -EPERM; |
1da177e4 | 590 | if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t))) |
b474c7ae | 591 | return -EFAULT; |
1da177e4 | 592 | |
fda168c2 ZW |
593 | /* overflow check */ |
594 | if (am_hreq.opcount >= INT_MAX / sizeof(xfs_attr_multiop_t)) | |
595 | return -E2BIG; | |
596 | ||
d296d30a CH |
597 | dentry = xfs_handlereq_to_dentry(parfilp, &am_hreq.hreq); |
598 | if (IS_ERR(dentry)) | |
599 | return PTR_ERR(dentry); | |
1da177e4 | 600 | |
2451337d | 601 | error = -E2BIG; |
e182f57a | 602 | size = am_hreq.opcount * sizeof(xfs_attr_multiop_t); |
1da177e4 | 603 | if (!size || size > 16 * PAGE_SIZE) |
d296d30a | 604 | goto out_dput; |
1da177e4 | 605 | |
0e639bde LZ |
606 | ops = memdup_user(am_hreq.ops, size); |
607 | if (IS_ERR(ops)) { | |
2451337d | 608 | error = PTR_ERR(ops); |
d296d30a | 609 | goto out_dput; |
0e639bde | 610 | } |
1da177e4 | 611 | |
1da177e4 LT |
612 | error = 0; |
613 | for (i = 0; i < am_hreq.opcount; i++) { | |
d0ce6439 CH |
614 | ops[i].am_error = xfs_ioc_attrmulti_one(parfilp, |
615 | d_inode(dentry), ops[i].am_opcode, | |
616 | ops[i].am_attrname, ops[i].am_attrvalue, | |
617 | &ops[i].am_length, ops[i].am_flags); | |
1da177e4 LT |
618 | } |
619 | ||
620 | if (copy_to_user(am_hreq.ops, ops, size)) | |
2451337d | 621 | error = -EFAULT; |
1da177e4 | 622 | |
1da177e4 | 623 | kfree(ops); |
d296d30a CH |
624 | out_dput: |
625 | dput(dentry); | |
2451337d | 626 | return error; |
1da177e4 LT |
627 | } |
628 | ||
d5547f9f | 629 | int |
1da177e4 | 630 | xfs_ioc_space( |
1da177e4 | 631 | struct file *filp, |
743bb465 | 632 | xfs_flock64_t *bf) |
1da177e4 | 633 | { |
8f3e2058 CH |
634 | struct inode *inode = file_inode(filp); |
635 | struct xfs_inode *ip = XFS_I(inode); | |
865e9446 | 636 | struct iattr iattr; |
837a6e7f | 637 | enum xfs_prealloc_flags flags = XFS_PREALLOC_CLEAR; |
c63a8eae | 638 | uint iolock = XFS_IOLOCK_EXCL | XFS_MMAPLOCK_EXCL; |
1da177e4 LT |
639 | int error; |
640 | ||
f37ea149 | 641 | if (inode->i_flags & (S_IMMUTABLE|S_APPEND)) |
b474c7ae | 642 | return -EPERM; |
1da177e4 | 643 | |
ad4a8ac4 | 644 | if (!(filp->f_mode & FMODE_WRITE)) |
b474c7ae | 645 | return -EBADF; |
1da177e4 | 646 | |
f37ea149 | 647 | if (!S_ISREG(inode->i_mode)) |
b474c7ae | 648 | return -EINVAL; |
1da177e4 | 649 | |
7a42c70e CH |
650 | if (xfs_is_always_cow_inode(ip)) |
651 | return -EOPNOTSUPP; | |
652 | ||
8add71ca CH |
653 | if (filp->f_flags & O_DSYNC) |
654 | flags |= XFS_PREALLOC_SYNC; | |
8f3e2058 | 655 | if (filp->f_mode & FMODE_NOCMTIME) |
8add71ca CH |
656 | flags |= XFS_PREALLOC_INVISIBLE; |
657 | ||
d9457dc0 JK |
658 | error = mnt_want_write_file(filp); |
659 | if (error) | |
660 | return error; | |
865e9446 | 661 | |
781355c6 | 662 | xfs_ilock(ip, iolock); |
69eb5fa1 | 663 | error = xfs_break_layouts(inode, &iolock, BREAK_UNMAP); |
781355c6 CH |
664 | if (error) |
665 | goto out_unlock; | |
249bd908 | 666 | inode_dio_wait(inode); |
865e9446 CH |
667 | |
668 | switch (bf->l_whence) { | |
669 | case 0: /*SEEK_SET*/ | |
670 | break; | |
671 | case 1: /*SEEK_CUR*/ | |
672 | bf->l_start += filp->f_pos; | |
673 | break; | |
674 | case 2: /*SEEK_END*/ | |
675 | bf->l_start += XFS_ISIZE(ip); | |
676 | break; | |
677 | default: | |
2451337d | 678 | error = -EINVAL; |
865e9446 CH |
679 | goto out_unlock; |
680 | } | |
681 | ||
837a6e7f | 682 | if (bf->l_start < 0 || bf->l_start > inode->i_sb->s_maxbytes) { |
2451337d | 683 | error = -EINVAL; |
865e9446 CH |
684 | goto out_unlock; |
685 | } | |
686 | ||
837a6e7f CH |
687 | if (bf->l_start > XFS_ISIZE(ip)) { |
688 | error = xfs_alloc_file_space(ip, XFS_ISIZE(ip), | |
689 | bf->l_start - XFS_ISIZE(ip), 0); | |
690 | if (error) | |
691 | goto out_unlock; | |
865e9446 CH |
692 | } |
693 | ||
837a6e7f CH |
694 | iattr.ia_valid = ATTR_SIZE; |
695 | iattr.ia_size = bf->l_start; | |
696 | error = xfs_vn_setattr_size(file_dentry(filp), &iattr); | |
865e9446 CH |
697 | if (error) |
698 | goto out_unlock; | |
699 | ||
8add71ca | 700 | error = xfs_update_prealloc_flags(ip, flags); |
865e9446 CH |
701 | |
702 | out_unlock: | |
781355c6 | 703 | xfs_iunlock(ip, iolock); |
d9457dc0 | 704 | mnt_drop_write_file(filp); |
2451337d | 705 | return error; |
1da177e4 LT |
706 | } |
707 | ||
2810bd68 DW |
708 | /* Return 0 on success or positive error */ |
709 | int | |
8bfe9d18 | 710 | xfs_fsbulkstat_one_fmt( |
7035f972 DW |
711 | struct xfs_ibulk *breq, |
712 | const struct xfs_bulkstat *bstat) | |
2810bd68 | 713 | { |
7035f972 DW |
714 | struct xfs_bstat bs1; |
715 | ||
716 | xfs_bulkstat_to_bstat(breq->mp, &bs1, bstat); | |
717 | if (copy_to_user(breq->ubuffer, &bs1, sizeof(bs1))) | |
2810bd68 DW |
718 | return -EFAULT; |
719 | return xfs_ibulk_advance(breq, sizeof(struct xfs_bstat)); | |
720 | } | |
721 | ||
677717fb | 722 | int |
8bfe9d18 | 723 | xfs_fsinumbers_fmt( |
5f19c7fc DW |
724 | struct xfs_ibulk *breq, |
725 | const struct xfs_inumbers *igrp) | |
677717fb | 726 | { |
5f19c7fc DW |
727 | struct xfs_inogrp ig1; |
728 | ||
729 | xfs_inumbers_to_inogrp(&ig1, igrp); | |
730 | if (copy_to_user(breq->ubuffer, &ig1, sizeof(struct xfs_inogrp))) | |
677717fb DW |
731 | return -EFAULT; |
732 | return xfs_ibulk_advance(breq, sizeof(struct xfs_inogrp)); | |
733 | } | |
734 | ||
1da177e4 | 735 | STATIC int |
8bfe9d18 | 736 | xfs_ioc_fsbulkstat( |
1da177e4 LT |
737 | xfs_mount_t *mp, |
738 | unsigned int cmd, | |
739 | void __user *arg) | |
740 | { | |
2810bd68 DW |
741 | struct xfs_fsop_bulkreq bulkreq; |
742 | struct xfs_ibulk breq = { | |
743 | .mp = mp, | |
744 | .ocount = 0, | |
745 | }; | |
746 | xfs_ino_t lastino; | |
1da177e4 LT |
747 | int error; |
748 | ||
749 | /* done = 1 if there are more stats to get and if bulkstat */ | |
750 | /* should be called again (unused here, but used in dmapi) */ | |
751 | ||
752 | if (!capable(CAP_SYS_ADMIN)) | |
753 | return -EPERM; | |
754 | ||
755 | if (XFS_FORCED_SHUTDOWN(mp)) | |
b474c7ae | 756 | return -EIO; |
1da177e4 | 757 | |
6f71fb68 | 758 | if (copy_from_user(&bulkreq, arg, sizeof(struct xfs_fsop_bulkreq))) |
b474c7ae | 759 | return -EFAULT; |
1da177e4 | 760 | |
2810bd68 | 761 | if (copy_from_user(&lastino, bulkreq.lastip, sizeof(__s64))) |
b474c7ae | 762 | return -EFAULT; |
1da177e4 | 763 | |
2810bd68 | 764 | if (bulkreq.icount <= 0) |
b474c7ae | 765 | return -EINVAL; |
1da177e4 | 766 | |
cd57e594 | 767 | if (bulkreq.ubuffer == NULL) |
b474c7ae | 768 | return -EINVAL; |
cd57e594 | 769 | |
2810bd68 DW |
770 | breq.ubuffer = bulkreq.ubuffer; |
771 | breq.icount = bulkreq.icount; | |
772 | ||
773 | /* | |
774 | * FSBULKSTAT_SINGLE expects that *lastip contains the inode number | |
775 | * that we want to stat. However, FSINUMBERS and FSBULKSTAT expect | |
776 | * that *lastip contains either zero or the number of the last inode to | |
777 | * be examined by the previous call and return results starting with | |
778 | * the next inode after that. The new bulk request back end functions | |
779 | * take the inode to start with, so we have to compute the startino | |
780 | * parameter from lastino to maintain correct function. lastino == 0 | |
781 | * is a special case because it has traditionally meant "first inode | |
782 | * in filesystem". | |
783 | */ | |
784 | if (cmd == XFS_IOC_FSINUMBERS) { | |
677717fb | 785 | breq.startino = lastino ? lastino + 1 : 0; |
8bfe9d18 | 786 | error = xfs_inumbers(&breq, xfs_fsinumbers_fmt); |
677717fb | 787 | lastino = breq.startino - 1; |
2810bd68 DW |
788 | } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE) { |
789 | breq.startino = lastino; | |
790 | breq.icount = 1; | |
8bfe9d18 | 791 | error = xfs_bulkstat_one(&breq, xfs_fsbulkstat_one_fmt); |
2810bd68 DW |
792 | } else { /* XFS_IOC_FSBULKSTAT */ |
793 | breq.startino = lastino ? lastino + 1 : 0; | |
8bfe9d18 | 794 | error = xfs_bulkstat(&breq, xfs_fsbulkstat_one_fmt); |
2810bd68 DW |
795 | lastino = breq.startino - 1; |
796 | } | |
1da177e4 LT |
797 | |
798 | if (error) | |
2451337d | 799 | return error; |
1da177e4 | 800 | |
f16fe3ec | 801 | if (bulkreq.lastip != NULL && |
2810bd68 | 802 | copy_to_user(bulkreq.lastip, &lastino, sizeof(xfs_ino_t))) |
f16fe3ec | 803 | return -EFAULT; |
1da177e4 | 804 | |
f16fe3ec | 805 | if (bulkreq.ocount != NULL && |
2810bd68 | 806 | copy_to_user(bulkreq.ocount, &breq.ocount, sizeof(__s32))) |
f16fe3ec | 807 | return -EFAULT; |
1da177e4 LT |
808 | |
809 | return 0; | |
810 | } | |
811 | ||
0448b6f4 DW |
812 | /* Return 0 on success or positive error */ |
813 | static int | |
814 | xfs_bulkstat_fmt( | |
815 | struct xfs_ibulk *breq, | |
816 | const struct xfs_bulkstat *bstat) | |
817 | { | |
818 | if (copy_to_user(breq->ubuffer, bstat, sizeof(struct xfs_bulkstat))) | |
819 | return -EFAULT; | |
820 | return xfs_ibulk_advance(breq, sizeof(struct xfs_bulkstat)); | |
821 | } | |
822 | ||
823 | /* | |
824 | * Check the incoming bulk request @hdr from userspace and initialize the | |
825 | * internal @breq bulk request appropriately. Returns 0 if the bulk request | |
e7ee96df | 826 | * should proceed; -ECANCELED if there's nothing to do; or the usual |
0448b6f4 DW |
827 | * negative error code. |
828 | */ | |
829 | static int | |
830 | xfs_bulk_ireq_setup( | |
831 | struct xfs_mount *mp, | |
832 | struct xfs_bulk_ireq *hdr, | |
833 | struct xfs_ibulk *breq, | |
834 | void __user *ubuffer) | |
835 | { | |
836 | if (hdr->icount == 0 || | |
837 | (hdr->flags & ~XFS_BULK_IREQ_FLAGS_ALL) || | |
0448b6f4 DW |
838 | memchr_inv(hdr->reserved, 0, sizeof(hdr->reserved))) |
839 | return -EINVAL; | |
840 | ||
841 | breq->startino = hdr->ino; | |
842 | breq->ubuffer = ubuffer; | |
843 | breq->icount = hdr->icount; | |
844 | breq->ocount = 0; | |
13d59a2a DW |
845 | breq->flags = 0; |
846 | ||
bf3cb394 DW |
847 | /* |
848 | * The @ino parameter is a special value, so we must look it up here. | |
849 | * We're not allowed to have IREQ_AGNO, and we only return one inode | |
850 | * worth of data. | |
851 | */ | |
852 | if (hdr->flags & XFS_BULK_IREQ_SPECIAL) { | |
853 | if (hdr->flags & XFS_BULK_IREQ_AGNO) | |
854 | return -EINVAL; | |
855 | ||
856 | switch (hdr->ino) { | |
857 | case XFS_BULK_IREQ_SPECIAL_ROOT: | |
858 | hdr->ino = mp->m_sb.sb_rootino; | |
859 | break; | |
860 | default: | |
861 | return -EINVAL; | |
862 | } | |
863 | breq->icount = 1; | |
1da177e4 LT |
864 | } |
865 | ||
13d59a2a DW |
866 | /* |
867 | * The IREQ_AGNO flag means that we only want results from a given AG. | |
868 | * If @hdr->ino is zero, we start iterating in that AG. If @hdr->ino is | |
869 | * beyond the specified AG then we return no results. | |
870 | */ | |
871 | if (hdr->flags & XFS_BULK_IREQ_AGNO) { | |
872 | if (hdr->agno >= mp->m_sb.sb_agcount) | |
873 | return -EINVAL; | |
874 | ||
875 | if (breq->startino == 0) | |
876 | breq->startino = XFS_AGINO_TO_INO(mp, hdr->agno, 0); | |
877 | else if (XFS_INO_TO_AGNO(mp, breq->startino) < hdr->agno) | |
878 | return -EINVAL; | |
879 | ||
880 | breq->flags |= XFS_IBULK_SAME_AG; | |
881 | ||
882 | /* Asking for an inode past the end of the AG? We're done! */ | |
883 | if (XFS_INO_TO_AGNO(mp, breq->startino) > hdr->agno) | |
e7ee96df | 884 | return -ECANCELED; |
13d59a2a DW |
885 | } else if (hdr->agno) |
886 | return -EINVAL; | |
0448b6f4 DW |
887 | |
888 | /* Asking for an inode past the end of the FS? We're done! */ | |
889 | if (XFS_INO_TO_AGNO(mp, breq->startino) >= mp->m_sb.sb_agcount) | |
e7ee96df | 890 | return -ECANCELED; |
0448b6f4 DW |
891 | |
892 | return 0; | |
893 | } | |
894 | ||
895 | /* | |
896 | * Update the userspace bulk request @hdr to reflect the end state of the | |
897 | * internal bulk request @breq. | |
898 | */ | |
899 | static void | |
900 | xfs_bulk_ireq_teardown( | |
901 | struct xfs_bulk_ireq *hdr, | |
902 | struct xfs_ibulk *breq) | |
903 | { | |
904 | hdr->ino = breq->startino; | |
905 | hdr->ocount = breq->ocount; | |
906 | } | |
907 | ||
908 | /* Handle the v5 bulkstat ioctl. */ | |
909 | STATIC int | |
910 | xfs_ioc_bulkstat( | |
911 | struct xfs_mount *mp, | |
912 | unsigned int cmd, | |
913 | struct xfs_bulkstat_req __user *arg) | |
914 | { | |
915 | struct xfs_bulk_ireq hdr; | |
916 | struct xfs_ibulk breq = { | |
917 | .mp = mp, | |
918 | }; | |
919 | int error; | |
920 | ||
921 | if (!capable(CAP_SYS_ADMIN)) | |
922 | return -EPERM; | |
923 | ||
924 | if (XFS_FORCED_SHUTDOWN(mp)) | |
925 | return -EIO; | |
926 | ||
927 | if (copy_from_user(&hdr, &arg->hdr, sizeof(hdr))) | |
928 | return -EFAULT; | |
929 | ||
930 | error = xfs_bulk_ireq_setup(mp, &hdr, &breq, arg->bulkstat); | |
e7ee96df | 931 | if (error == -ECANCELED) |
0448b6f4 DW |
932 | goto out_teardown; |
933 | if (error < 0) | |
934 | return error; | |
935 | ||
936 | error = xfs_bulkstat(&breq, xfs_bulkstat_fmt); | |
937 | if (error) | |
938 | return error; | |
939 | ||
940 | out_teardown: | |
941 | xfs_bulk_ireq_teardown(&hdr, &breq); | |
942 | if (copy_to_user(&arg->hdr, &hdr, sizeof(hdr))) | |
943 | return -EFAULT; | |
944 | ||
945 | return 0; | |
946 | } | |
947 | ||
fba9760a DW |
948 | STATIC int |
949 | xfs_inumbers_fmt( | |
950 | struct xfs_ibulk *breq, | |
951 | const struct xfs_inumbers *igrp) | |
952 | { | |
953 | if (copy_to_user(breq->ubuffer, igrp, sizeof(struct xfs_inumbers))) | |
954 | return -EFAULT; | |
955 | return xfs_ibulk_advance(breq, sizeof(struct xfs_inumbers)); | |
956 | } | |
957 | ||
958 | /* Handle the v5 inumbers ioctl. */ | |
959 | STATIC int | |
960 | xfs_ioc_inumbers( | |
961 | struct xfs_mount *mp, | |
962 | unsigned int cmd, | |
963 | struct xfs_inumbers_req __user *arg) | |
964 | { | |
965 | struct xfs_bulk_ireq hdr; | |
966 | struct xfs_ibulk breq = { | |
967 | .mp = mp, | |
968 | }; | |
969 | int error; | |
970 | ||
971 | if (!capable(CAP_SYS_ADMIN)) | |
972 | return -EPERM; | |
973 | ||
974 | if (XFS_FORCED_SHUTDOWN(mp)) | |
975 | return -EIO; | |
976 | ||
977 | if (copy_from_user(&hdr, &arg->hdr, sizeof(hdr))) | |
978 | return -EFAULT; | |
979 | ||
980 | error = xfs_bulk_ireq_setup(mp, &hdr, &breq, arg->inumbers); | |
e7ee96df | 981 | if (error == -ECANCELED) |
fba9760a DW |
982 | goto out_teardown; |
983 | if (error < 0) | |
984 | return error; | |
985 | ||
986 | error = xfs_inumbers(&breq, xfs_inumbers_fmt); | |
987 | if (error) | |
988 | return error; | |
989 | ||
990 | out_teardown: | |
991 | xfs_bulk_ireq_teardown(&hdr, &breq); | |
992 | if (copy_to_user(&arg->hdr, &hdr, sizeof(hdr))) | |
993 | return -EFAULT; | |
994 | ||
1da177e4 LT |
995 | return 0; |
996 | } | |
997 | ||
1da177e4 LT |
998 | STATIC int |
999 | xfs_ioc_fsgeometry( | |
1b6d968d DC |
1000 | struct xfs_mount *mp, |
1001 | void __user *arg, | |
1002 | int struct_version) | |
1da177e4 | 1003 | { |
1b6d968d DC |
1004 | struct xfs_fsop_geom fsgeo; |
1005 | size_t len; | |
1da177e4 | 1006 | |
91083269 | 1007 | xfs_fs_geometry(&mp->m_sb, &fsgeo, struct_version); |
1da177e4 | 1008 | |
1b6d968d DC |
1009 | if (struct_version <= 3) |
1010 | len = sizeof(struct xfs_fsop_geom_v1); | |
1011 | else if (struct_version == 4) | |
1012 | len = sizeof(struct xfs_fsop_geom_v4); | |
c23232d4 DW |
1013 | else { |
1014 | xfs_fsop_geom_health(mp, &fsgeo); | |
1b6d968d | 1015 | len = sizeof(fsgeo); |
c23232d4 | 1016 | } |
1b6d968d DC |
1017 | |
1018 | if (copy_to_user(arg, &fsgeo, len)) | |
b474c7ae | 1019 | return -EFAULT; |
1da177e4 LT |
1020 | return 0; |
1021 | } | |
1022 | ||
7cd5006b DW |
1023 | STATIC int |
1024 | xfs_ioc_ag_geometry( | |
1025 | struct xfs_mount *mp, | |
1026 | void __user *arg) | |
1027 | { | |
1028 | struct xfs_ag_geometry ageo; | |
1029 | int error; | |
1030 | ||
1031 | if (copy_from_user(&ageo, arg, sizeof(ageo))) | |
1032 | return -EFAULT; | |
76f17933 DW |
1033 | if (ageo.ag_flags) |
1034 | return -EINVAL; | |
1035 | if (memchr_inv(&ageo.ag_reserved, 0, sizeof(ageo.ag_reserved))) | |
1036 | return -EINVAL; | |
7cd5006b DW |
1037 | |
1038 | error = xfs_ag_get_geometry(mp, ageo.ag_number, &ageo); | |
1039 | if (error) | |
1040 | return error; | |
1041 | ||
1042 | if (copy_to_user(arg, &ageo, sizeof(ageo))) | |
1043 | return -EFAULT; | |
1044 | return 0; | |
1045 | } | |
1046 | ||
1da177e4 LT |
1047 | /* |
1048 | * Linux extended inode flags interface. | |
1049 | */ | |
1da177e4 LT |
1050 | |
1051 | STATIC unsigned int | |
1052 | xfs_merge_ioc_xflags( | |
1053 | unsigned int flags, | |
1054 | unsigned int start) | |
1055 | { | |
1056 | unsigned int xflags = start; | |
1057 | ||
39058a0e | 1058 | if (flags & FS_IMMUTABLE_FL) |
e7b89481 | 1059 | xflags |= FS_XFLAG_IMMUTABLE; |
1da177e4 | 1060 | else |
e7b89481 | 1061 | xflags &= ~FS_XFLAG_IMMUTABLE; |
39058a0e | 1062 | if (flags & FS_APPEND_FL) |
e7b89481 | 1063 | xflags |= FS_XFLAG_APPEND; |
1da177e4 | 1064 | else |
e7b89481 | 1065 | xflags &= ~FS_XFLAG_APPEND; |
39058a0e | 1066 | if (flags & FS_SYNC_FL) |
e7b89481 | 1067 | xflags |= FS_XFLAG_SYNC; |
1da177e4 | 1068 | else |
e7b89481 | 1069 | xflags &= ~FS_XFLAG_SYNC; |
39058a0e | 1070 | if (flags & FS_NOATIME_FL) |
e7b89481 | 1071 | xflags |= FS_XFLAG_NOATIME; |
1da177e4 | 1072 | else |
e7b89481 | 1073 | xflags &= ~FS_XFLAG_NOATIME; |
39058a0e | 1074 | if (flags & FS_NODUMP_FL) |
e7b89481 | 1075 | xflags |= FS_XFLAG_NODUMP; |
1da177e4 | 1076 | else |
e7b89481 | 1077 | xflags &= ~FS_XFLAG_NODUMP; |
1da177e4 LT |
1078 | |
1079 | return xflags; | |
1080 | } | |
1081 | ||
1082 | STATIC unsigned int | |
1083 | xfs_di2lxflags( | |
c8ce540d | 1084 | uint16_t di_flags) |
1da177e4 LT |
1085 | { |
1086 | unsigned int flags = 0; | |
1087 | ||
1088 | if (di_flags & XFS_DIFLAG_IMMUTABLE) | |
39058a0e | 1089 | flags |= FS_IMMUTABLE_FL; |
1da177e4 | 1090 | if (di_flags & XFS_DIFLAG_APPEND) |
39058a0e | 1091 | flags |= FS_APPEND_FL; |
1da177e4 | 1092 | if (di_flags & XFS_DIFLAG_SYNC) |
39058a0e | 1093 | flags |= FS_SYNC_FL; |
1da177e4 | 1094 | if (di_flags & XFS_DIFLAG_NOATIME) |
39058a0e | 1095 | flags |= FS_NOATIME_FL; |
1da177e4 | 1096 | if (di_flags & XFS_DIFLAG_NODUMP) |
39058a0e | 1097 | flags |= FS_NODUMP_FL; |
1da177e4 LT |
1098 | return flags; |
1099 | } | |
1100 | ||
7b0e492e DW |
1101 | static void |
1102 | xfs_fill_fsxattr( | |
1103 | struct xfs_inode *ip, | |
1104 | bool attr, | |
1105 | struct fsxattr *fa) | |
c83bfab1 | 1106 | { |
daf83964 CH |
1107 | struct xfs_ifork *ifp = attr ? ip->i_afp : &ip->i_df; |
1108 | ||
7b0e492e DW |
1109 | simple_fill_fsxattr(fa, xfs_ip2xflags(ip)); |
1110 | fa->fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog; | |
1111 | fa->fsx_cowextsize = ip->i_d.di_cowextsize << | |
f7ca3522 | 1112 | ip->i_mount->m_sb.sb_blocklog; |
de7a866f | 1113 | fa->fsx_projid = ip->i_d.di_projid; |
daf83964 CH |
1114 | if (ifp && (ifp->if_flags & XFS_IFEXTENTS)) |
1115 | fa->fsx_nextents = xfs_iext_count(ifp); | |
1116 | else | |
1117 | fa->fsx_nextents = xfs_ifork_nextents(ifp); | |
7b0e492e DW |
1118 | } |
1119 | ||
1120 | STATIC int | |
1121 | xfs_ioc_fsgetxattr( | |
1122 | xfs_inode_t *ip, | |
1123 | int attr, | |
1124 | void __user *arg) | |
1125 | { | |
1126 | struct fsxattr fa; | |
1127 | ||
1128 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
1129 | xfs_fill_fsxattr(ip, attr, &fa); | |
c83bfab1 CH |
1130 | xfs_iunlock(ip, XFS_ILOCK_SHARED); |
1131 | ||
1132 | if (copy_to_user(arg, &fa, sizeof(fa))) | |
1133 | return -EFAULT; | |
1134 | return 0; | |
1135 | } | |
1136 | ||
dd60687e CH |
1137 | STATIC uint16_t |
1138 | xfs_flags2diflags( | |
25fe55e8 CH |
1139 | struct xfs_inode *ip, |
1140 | unsigned int xflags) | |
1141 | { | |
25fe55e8 | 1142 | /* can't set PREALLOC this way, just preserve it */ |
dd60687e CH |
1143 | uint16_t di_flags = |
1144 | (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); | |
1145 | ||
e7b89481 | 1146 | if (xflags & FS_XFLAG_IMMUTABLE) |
25fe55e8 | 1147 | di_flags |= XFS_DIFLAG_IMMUTABLE; |
e7b89481 | 1148 | if (xflags & FS_XFLAG_APPEND) |
25fe55e8 | 1149 | di_flags |= XFS_DIFLAG_APPEND; |
e7b89481 | 1150 | if (xflags & FS_XFLAG_SYNC) |
25fe55e8 | 1151 | di_flags |= XFS_DIFLAG_SYNC; |
e7b89481 | 1152 | if (xflags & FS_XFLAG_NOATIME) |
25fe55e8 | 1153 | di_flags |= XFS_DIFLAG_NOATIME; |
e7b89481 | 1154 | if (xflags & FS_XFLAG_NODUMP) |
25fe55e8 | 1155 | di_flags |= XFS_DIFLAG_NODUMP; |
e7b89481 | 1156 | if (xflags & FS_XFLAG_NODEFRAG) |
25fe55e8 | 1157 | di_flags |= XFS_DIFLAG_NODEFRAG; |
e7b89481 | 1158 | if (xflags & FS_XFLAG_FILESTREAM) |
25fe55e8 | 1159 | di_flags |= XFS_DIFLAG_FILESTREAM; |
c19b3b05 | 1160 | if (S_ISDIR(VFS_I(ip)->i_mode)) { |
e7b89481 | 1161 | if (xflags & FS_XFLAG_RTINHERIT) |
25fe55e8 | 1162 | di_flags |= XFS_DIFLAG_RTINHERIT; |
e7b89481 | 1163 | if (xflags & FS_XFLAG_NOSYMLINKS) |
25fe55e8 | 1164 | di_flags |= XFS_DIFLAG_NOSYMLINKS; |
e7b89481 | 1165 | if (xflags & FS_XFLAG_EXTSZINHERIT) |
25fe55e8 | 1166 | di_flags |= XFS_DIFLAG_EXTSZINHERIT; |
e7b89481 | 1167 | if (xflags & FS_XFLAG_PROJINHERIT) |
9336e3a7 | 1168 | di_flags |= XFS_DIFLAG_PROJINHERIT; |
c19b3b05 | 1169 | } else if (S_ISREG(VFS_I(ip)->i_mode)) { |
e7b89481 | 1170 | if (xflags & FS_XFLAG_REALTIME) |
25fe55e8 | 1171 | di_flags |= XFS_DIFLAG_REALTIME; |
e7b89481 | 1172 | if (xflags & FS_XFLAG_EXTSIZE) |
25fe55e8 CH |
1173 | di_flags |= XFS_DIFLAG_EXTSIZE; |
1174 | } | |
58f88ca2 | 1175 | |
dd60687e CH |
1176 | return di_flags; |
1177 | } | |
1178 | ||
1179 | STATIC uint64_t | |
1180 | xfs_flags2diflags2( | |
1181 | struct xfs_inode *ip, | |
1182 | unsigned int xflags) | |
1183 | { | |
1184 | uint64_t di_flags2 = | |
1185 | (ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK); | |
58f88ca2 | 1186 | |
58f88ca2 DC |
1187 | if (xflags & FS_XFLAG_DAX) |
1188 | di_flags2 |= XFS_DIFLAG2_DAX; | |
f7ca3522 DW |
1189 | if (xflags & FS_XFLAG_COWEXTSIZE) |
1190 | di_flags2 |= XFS_DIFLAG2_COWEXTSIZE; | |
58f88ca2 | 1191 | |
dd60687e | 1192 | return di_flags2; |
25fe55e8 CH |
1193 | } |
1194 | ||
29a17c00 DC |
1195 | static int |
1196 | xfs_ioctl_setattr_xflags( | |
1197 | struct xfs_trans *tp, | |
1198 | struct xfs_inode *ip, | |
1199 | struct fsxattr *fa) | |
1200 | { | |
1201 | struct xfs_mount *mp = ip->i_mount; | |
dd60687e | 1202 | uint64_t di_flags2; |
29a17c00 DC |
1203 | |
1204 | /* Can't change realtime flag if any extents are allocated. */ | |
daf83964 | 1205 | if ((ip->i_df.if_nextents || ip->i_delayed_blks) && |
e7b89481 | 1206 | XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & FS_XFLAG_REALTIME)) |
29a17c00 DC |
1207 | return -EINVAL; |
1208 | ||
1209 | /* If realtime flag is set then must have realtime device */ | |
e7b89481 | 1210 | if (fa->fsx_xflags & FS_XFLAG_REALTIME) { |
29a17c00 DC |
1211 | if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 || |
1212 | (ip->i_d.di_extsize % mp->m_sb.sb_rextsize)) | |
1213 | return -EINVAL; | |
1214 | } | |
1215 | ||
1987fd74 | 1216 | /* Clear reflink if we are actually able to set the rt flag. */ |
c8e156ac | 1217 | if ((fa->fsx_xflags & FS_XFLAG_REALTIME) && xfs_is_reflink_inode(ip)) |
1987fd74 | 1218 | ip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK; |
c8e156ac | 1219 | |
4f435ebe DW |
1220 | /* Don't allow us to set DAX mode for a reflinked file for now. */ |
1221 | if ((fa->fsx_xflags & FS_XFLAG_DAX) && xfs_is_reflink_inode(ip)) | |
1222 | return -EINVAL; | |
1223 | ||
dd60687e CH |
1224 | /* diflags2 only valid for v3 inodes. */ |
1225 | di_flags2 = xfs_flags2diflags2(ip, fa->fsx_xflags); | |
6471e9c5 | 1226 | if (di_flags2 && !xfs_sb_version_has_v3inode(&mp->m_sb)) |
dd60687e CH |
1227 | return -EINVAL; |
1228 | ||
1229 | ip->i_d.di_flags = xfs_flags2diflags(ip, fa->fsx_xflags); | |
1230 | ip->i_d.di_flags2 = di_flags2; | |
1231 | ||
840d493d | 1232 | xfs_diflags_to_iflags(ip, false); |
29a17c00 DC |
1233 | xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); |
1234 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
ff6d6af2 | 1235 | XFS_STATS_INC(mp, xs_ig_attrchg); |
29a17c00 DC |
1236 | return 0; |
1237 | } | |
1238 | ||
e4f9ba20 IW |
1239 | static void |
1240 | xfs_ioctl_setattr_prepare_dax( | |
3a6a854a | 1241 | struct xfs_inode *ip, |
e4f9ba20 | 1242 | struct fsxattr *fa) |
3a6a854a | 1243 | { |
e4f9ba20 IW |
1244 | struct xfs_mount *mp = ip->i_mount; |
1245 | struct inode *inode = VFS_I(ip); | |
3a6a854a | 1246 | |
aaacdd25 | 1247 | if (S_ISDIR(inode->i_mode)) |
e4f9ba20 | 1248 | return; |
3a6a854a | 1249 | |
e4f9ba20 IW |
1250 | if ((mp->m_flags & XFS_MOUNT_DAX_ALWAYS) || |
1251 | (mp->m_flags & XFS_MOUNT_DAX_NEVER)) | |
1252 | return; | |
3a6a854a | 1253 | |
e4f9ba20 IW |
1254 | if (((fa->fsx_xflags & FS_XFLAG_DAX) && |
1255 | !(ip->i_d.di_flags2 & XFS_DIFLAG2_DAX)) || | |
1256 | (!(fa->fsx_xflags & FS_XFLAG_DAX) && | |
1257 | (ip->i_d.di_flags2 & XFS_DIFLAG2_DAX))) | |
1258 | d_mark_dontcache(inode); | |
29a17c00 DC |
1259 | } |
1260 | ||
8f3d17ab DC |
1261 | /* |
1262 | * Set up the transaction structure for the setattr operation, checking that we | |
1263 | * have permission to do so. On success, return a clean transaction and the | |
1264 | * inode locked exclusively ready for further operation specific checks. On | |
1265 | * failure, return an error without modifying or locking the inode. | |
1266 | */ | |
1267 | static struct xfs_trans * | |
1268 | xfs_ioctl_setattr_get_trans( | |
e4f9ba20 | 1269 | struct xfs_inode *ip) |
8f3d17ab DC |
1270 | { |
1271 | struct xfs_mount *mp = ip->i_mount; | |
1272 | struct xfs_trans *tp; | |
3a6a854a | 1273 | int error = -EROFS; |
8f3d17ab DC |
1274 | |
1275 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
3a6a854a DC |
1276 | goto out_unlock; |
1277 | error = -EIO; | |
8f3d17ab | 1278 | if (XFS_FORCED_SHUTDOWN(mp)) |
3a6a854a | 1279 | goto out_unlock; |
8f3d17ab | 1280 | |
253f4911 | 1281 | error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp); |
8f3d17ab | 1282 | if (error) |
3de5eab3 | 1283 | goto out_unlock; |
8f3d17ab DC |
1284 | |
1285 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
e4f9ba20 | 1286 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); |
8f3d17ab DC |
1287 | |
1288 | /* | |
1289 | * CAP_FOWNER overrides the following restrictions: | |
1290 | * | |
1291 | * The user ID of the calling process must be equal to the file owner | |
1292 | * ID, except in cases where the CAP_FSETID capability is applicable. | |
1293 | */ | |
1294 | if (!inode_owner_or_capable(VFS_I(ip))) { | |
1295 | error = -EPERM; | |
1296 | goto out_cancel; | |
1297 | } | |
1298 | ||
1299 | if (mp->m_flags & XFS_MOUNT_WSYNC) | |
1300 | xfs_trans_set_sync(tp); | |
1301 | ||
1302 | return tp; | |
1303 | ||
1304 | out_cancel: | |
4906e215 | 1305 | xfs_trans_cancel(tp); |
3a6a854a | 1306 | out_unlock: |
8f3d17ab DC |
1307 | return ERR_PTR(error); |
1308 | } | |
1309 | ||
9b94fcc3 IP |
1310 | /* |
1311 | * extent size hint validation is somewhat cumbersome. Rules are: | |
1312 | * | |
1313 | * 1. extent size hint is only valid for directories and regular files | |
e7b89481 DC |
1314 | * 2. FS_XFLAG_EXTSIZE is only valid for regular files |
1315 | * 3. FS_XFLAG_EXTSZINHERIT is only valid for directories. | |
9b94fcc3 IP |
1316 | * 4. can only be changed on regular files if no extents are allocated |
1317 | * 5. can be changed on directories at any time | |
1318 | * 6. extsize hint of 0 turns off hints, clears inode flags. | |
1319 | * 7. Extent size must be a multiple of the appropriate block size. | |
1320 | * 8. for non-realtime files, the extent size hint must be limited | |
1321 | * to half the AG size to avoid alignment extending the extent beyond the | |
1322 | * limits of the AG. | |
80e4e126 DW |
1323 | * |
1324 | * Please keep this function in sync with xfs_scrub_inode_extsize. | |
9b94fcc3 | 1325 | */ |
f92090e9 | 1326 | static int |
d4388d3c DC |
1327 | xfs_ioctl_setattr_check_extsize( |
1328 | struct xfs_inode *ip, | |
1329 | struct fsxattr *fa) | |
1330 | { | |
1331 | struct xfs_mount *mp = ip->i_mount; | |
ca29be75 DW |
1332 | xfs_extlen_t size; |
1333 | xfs_fsblock_t extsize_fsb; | |
9b94fcc3 | 1334 | |
daf83964 | 1335 | if (S_ISREG(VFS_I(ip)->i_mode) && ip->i_df.if_nextents && |
d4388d3c DC |
1336 | ((ip->i_d.di_extsize << mp->m_sb.sb_blocklog) != fa->fsx_extsize)) |
1337 | return -EINVAL; | |
1338 | ||
ca29be75 DW |
1339 | if (fa->fsx_extsize == 0) |
1340 | return 0; | |
d4388d3c | 1341 | |
ca29be75 DW |
1342 | extsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_extsize); |
1343 | if (extsize_fsb > MAXEXTLEN) | |
1344 | return -EINVAL; | |
d4388d3c | 1345 | |
ca29be75 DW |
1346 | if (XFS_IS_REALTIME_INODE(ip) || |
1347 | (fa->fsx_xflags & FS_XFLAG_REALTIME)) { | |
1348 | size = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog; | |
1349 | } else { | |
1350 | size = mp->m_sb.sb_blocksize; | |
1351 | if (extsize_fsb > mp->m_sb.sb_agblocks / 2) | |
d4388d3c | 1352 | return -EINVAL; |
ca29be75 DW |
1353 | } |
1354 | ||
1355 | if (fa->fsx_extsize % size) | |
1356 | return -EINVAL; | |
9b94fcc3 | 1357 | |
d4388d3c DC |
1358 | return 0; |
1359 | } | |
1360 | ||
f7ca3522 DW |
1361 | /* |
1362 | * CoW extent size hint validation rules are: | |
1363 | * | |
1364 | * 1. CoW extent size hint can only be set if reflink is enabled on the fs. | |
1365 | * The inode does not have to have any shared blocks, but it must be a v3. | |
1366 | * 2. FS_XFLAG_COWEXTSIZE is only valid for directories and regular files; | |
1367 | * for a directory, the hint is propagated to new files. | |
1368 | * 3. Can be changed on files & directories at any time. | |
1369 | * 4. CoW extsize hint of 0 turns off hints, clears inode flags. | |
1370 | * 5. Extent size must be a multiple of the appropriate block size. | |
1371 | * 6. The extent size hint must be limited to half the AG size to avoid | |
1372 | * alignment extending the extent beyond the limits of the AG. | |
80e4e126 DW |
1373 | * |
1374 | * Please keep this function in sync with xfs_scrub_inode_cowextsize. | |
f7ca3522 DW |
1375 | */ |
1376 | static int | |
1377 | xfs_ioctl_setattr_check_cowextsize( | |
1378 | struct xfs_inode *ip, | |
1379 | struct fsxattr *fa) | |
1380 | { | |
1381 | struct xfs_mount *mp = ip->i_mount; | |
ca29be75 DW |
1382 | xfs_extlen_t size; |
1383 | xfs_fsblock_t cowextsize_fsb; | |
f7ca3522 DW |
1384 | |
1385 | if (!(fa->fsx_xflags & FS_XFLAG_COWEXTSIZE)) | |
1386 | return 0; | |
1387 | ||
5e28aafe | 1388 | if (!xfs_sb_version_hasreflink(&ip->i_mount->m_sb)) |
f7ca3522 DW |
1389 | return -EINVAL; |
1390 | ||
ca29be75 DW |
1391 | if (fa->fsx_cowextsize == 0) |
1392 | return 0; | |
f7ca3522 | 1393 | |
ca29be75 DW |
1394 | cowextsize_fsb = XFS_B_TO_FSB(mp, fa->fsx_cowextsize); |
1395 | if (cowextsize_fsb > MAXEXTLEN) | |
1396 | return -EINVAL; | |
f7ca3522 | 1397 | |
ca29be75 DW |
1398 | size = mp->m_sb.sb_blocksize; |
1399 | if (cowextsize_fsb > mp->m_sb.sb_agblocks / 2) | |
1400 | return -EINVAL; | |
f7ca3522 | 1401 | |
ca29be75 DW |
1402 | if (fa->fsx_cowextsize % size) |
1403 | return -EINVAL; | |
f7ca3522 DW |
1404 | |
1405 | return 0; | |
1406 | } | |
1407 | ||
f92090e9 | 1408 | static int |
23bd0735 DC |
1409 | xfs_ioctl_setattr_check_projid( |
1410 | struct xfs_inode *ip, | |
1411 | struct fsxattr *fa) | |
1412 | { | |
1413 | /* Disallow 32bit project ids if projid32bit feature is not enabled. */ | |
c8ce540d | 1414 | if (fa->fsx_projid > (uint16_t)-1 && |
23bd0735 DC |
1415 | !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb)) |
1416 | return -EINVAL; | |
23bd0735 DC |
1417 | return 0; |
1418 | } | |
25fe55e8 CH |
1419 | |
1420 | STATIC int | |
1421 | xfs_ioctl_setattr( | |
1422 | xfs_inode_t *ip, | |
fd179b9c | 1423 | struct fsxattr *fa) |
25fe55e8 | 1424 | { |
7b0e492e | 1425 | struct fsxattr old_fa; |
25fe55e8 CH |
1426 | struct xfs_mount *mp = ip->i_mount; |
1427 | struct xfs_trans *tp; | |
92f8ff73 | 1428 | struct xfs_dquot *pdqp = NULL; |
25fe55e8 CH |
1429 | struct xfs_dquot *olddquot = NULL; |
1430 | int code; | |
1431 | ||
cca28fb8 | 1432 | trace_xfs_ioctl_setattr(ip); |
25fe55e8 | 1433 | |
23bd0735 DC |
1434 | code = xfs_ioctl_setattr_check_projid(ip, fa); |
1435 | if (code) | |
1436 | return code; | |
23963e54 | 1437 | |
25fe55e8 CH |
1438 | /* |
1439 | * If disk quotas is on, we make sure that the dquots do exist on disk, | |
1440 | * before we start any other transactions. Trying to do this later | |
1441 | * is messy. We don't care to take a readlock to look at the ids | |
1442 | * in inode here, because we can't hold it across the trans_reserve. | |
1443 | * If the IDs do change before we take the ilock, we're covered | |
1444 | * because the i_*dquot fields will get updated anyway. | |
1445 | */ | |
fd179b9c | 1446 | if (XFS_IS_QUOTA_ON(mp)) { |
54295159 CH |
1447 | code = xfs_qm_vop_dqalloc(ip, VFS_I(ip)->i_uid, |
1448 | VFS_I(ip)->i_gid, fa->fsx_projid, | |
ea1c9040 | 1449 | XFS_QMOPT_PQUOTA, NULL, NULL, &pdqp); |
25fe55e8 CH |
1450 | if (code) |
1451 | return code; | |
1452 | } | |
1453 | ||
e4f9ba20 | 1454 | xfs_ioctl_setattr_prepare_dax(ip, fa); |
3a6a854a | 1455 | |
e4f9ba20 | 1456 | tp = xfs_ioctl_setattr_get_trans(ip); |
8f3d17ab DC |
1457 | if (IS_ERR(tp)) { |
1458 | code = PTR_ERR(tp); | |
1459 | goto error_free_dquots; | |
25fe55e8 CH |
1460 | } |
1461 | ||
fd179b9c | 1462 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp) && |
de7a866f | 1463 | ip->i_d.di_projid != fa->fsx_projid) { |
ea1c9040 | 1464 | code = xfs_qm_vop_chown_reserve(tp, ip, NULL, NULL, pdqp, |
fd179b9c DC |
1465 | capable(CAP_FOWNER) ? XFS_QMOPT_FORCE_RES : 0); |
1466 | if (code) /* out of quota */ | |
d4388d3c | 1467 | goto error_trans_cancel; |
25fe55e8 CH |
1468 | } |
1469 | ||
7b0e492e DW |
1470 | xfs_fill_fsxattr(ip, false, &old_fa); |
1471 | code = vfs_ioc_fssetxattr_check(VFS_I(ip), &old_fa, fa); | |
1472 | if (code) | |
1473 | goto error_trans_cancel; | |
1474 | ||
d4388d3c DC |
1475 | code = xfs_ioctl_setattr_check_extsize(ip, fa); |
1476 | if (code) | |
1477 | goto error_trans_cancel; | |
25fe55e8 | 1478 | |
f7ca3522 DW |
1479 | code = xfs_ioctl_setattr_check_cowextsize(ip, fa); |
1480 | if (code) | |
1481 | goto error_trans_cancel; | |
1482 | ||
29a17c00 DC |
1483 | code = xfs_ioctl_setattr_xflags(tp, ip, fa); |
1484 | if (code) | |
d4388d3c | 1485 | goto error_trans_cancel; |
25fe55e8 CH |
1486 | |
1487 | /* | |
fd179b9c DC |
1488 | * Change file ownership. Must be the owner or privileged. CAP_FSETID |
1489 | * overrides the following restrictions: | |
1490 | * | |
1491 | * The set-user-ID and set-group-ID bits of a file will be cleared upon | |
1492 | * successful return from chown() | |
25fe55e8 | 1493 | */ |
25fe55e8 | 1494 | |
c19b3b05 | 1495 | if ((VFS_I(ip)->i_mode & (S_ISUID|S_ISGID)) && |
fd179b9c | 1496 | !capable_wrt_inode_uidgid(VFS_I(ip), CAP_FSETID)) |
c19b3b05 | 1497 | VFS_I(ip)->i_mode &= ~(S_ISUID|S_ISGID); |
25fe55e8 | 1498 | |
fd179b9c | 1499 | /* Change the ownerships and register project quota modifications */ |
de7a866f | 1500 | if (ip->i_d.di_projid != fa->fsx_projid) { |
fd179b9c DC |
1501 | if (XFS_IS_QUOTA_RUNNING(mp) && XFS_IS_PQUOTA_ON(mp)) { |
1502 | olddquot = xfs_qm_vop_chown(tp, ip, | |
1503 | &ip->i_pdquot, pdqp); | |
1504 | } | |
de7a866f | 1505 | ip->i_d.di_projid = fa->fsx_projid; |
f13fae2d | 1506 | } |
25fe55e8 | 1507 | |
a872703f DC |
1508 | /* |
1509 | * Only set the extent size hint if we've already determined that the | |
1510 | * extent size hint should be set on the inode. If no extent size flags | |
1511 | * are set on the inode then unconditionally clear the extent size hint. | |
1512 | */ | |
fd179b9c DC |
1513 | if (ip->i_d.di_flags & (XFS_DIFLAG_EXTSIZE | XFS_DIFLAG_EXTSZINHERIT)) |
1514 | ip->i_d.di_extsize = fa->fsx_extsize >> mp->m_sb.sb_blocklog; | |
1515 | else | |
1516 | ip->i_d.di_extsize = 0; | |
6471e9c5 | 1517 | if (xfs_sb_version_has_v3inode(&mp->m_sb) && |
f7ca3522 DW |
1518 | (ip->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE)) |
1519 | ip->i_d.di_cowextsize = fa->fsx_cowextsize >> | |
1520 | mp->m_sb.sb_blocklog; | |
1521 | else | |
1522 | ip->i_d.di_cowextsize = 0; | |
25fe55e8 | 1523 | |
70393313 | 1524 | code = xfs_trans_commit(tp); |
25fe55e8 CH |
1525 | |
1526 | /* | |
1527 | * Release any dquot(s) the inode had kept before chown. | |
1528 | */ | |
7d095257 | 1529 | xfs_qm_dqrele(olddquot); |
92f8ff73 | 1530 | xfs_qm_dqrele(pdqp); |
25fe55e8 | 1531 | |
288699fe | 1532 | return code; |
25fe55e8 | 1533 | |
d4388d3c | 1534 | error_trans_cancel: |
4906e215 | 1535 | xfs_trans_cancel(tp); |
8f3d17ab | 1536 | error_free_dquots: |
92f8ff73 | 1537 | xfs_qm_dqrele(pdqp); |
25fe55e8 CH |
1538 | return code; |
1539 | } | |
1540 | ||
1da177e4 | 1541 | STATIC int |
df26cfe8 | 1542 | xfs_ioc_fssetxattr( |
1da177e4 LT |
1543 | xfs_inode_t *ip, |
1544 | struct file *filp, | |
1da177e4 LT |
1545 | void __user *arg) |
1546 | { | |
1547 | struct fsxattr fa; | |
d9457dc0 | 1548 | int error; |
df26cfe8 LM |
1549 | |
1550 | if (copy_from_user(&fa, arg, sizeof(fa))) | |
1551 | return -EFAULT; | |
1da177e4 | 1552 | |
d9457dc0 JK |
1553 | error = mnt_want_write_file(filp); |
1554 | if (error) | |
1555 | return error; | |
fd179b9c | 1556 | error = xfs_ioctl_setattr(ip, &fa); |
d9457dc0 | 1557 | mnt_drop_write_file(filp); |
2451337d | 1558 | return error; |
df26cfe8 | 1559 | } |
1da177e4 | 1560 | |
df26cfe8 LM |
1561 | STATIC int |
1562 | xfs_ioc_getxflags( | |
1563 | xfs_inode_t *ip, | |
1564 | void __user *arg) | |
1565 | { | |
1566 | unsigned int flags; | |
1da177e4 | 1567 | |
df26cfe8 LM |
1568 | flags = xfs_di2lxflags(ip->i_d.di_flags); |
1569 | if (copy_to_user(arg, &flags, sizeof(flags))) | |
1570 | return -EFAULT; | |
1571 | return 0; | |
1572 | } | |
1da177e4 | 1573 | |
df26cfe8 LM |
1574 | STATIC int |
1575 | xfs_ioc_setxflags( | |
f96291f6 | 1576 | struct xfs_inode *ip, |
df26cfe8 LM |
1577 | struct file *filp, |
1578 | void __user *arg) | |
1579 | { | |
f96291f6 | 1580 | struct xfs_trans *tp; |
25fe55e8 | 1581 | struct fsxattr fa; |
7b0e492e | 1582 | struct fsxattr old_fa; |
df26cfe8 | 1583 | unsigned int flags; |
f96291f6 | 1584 | int error; |
1da177e4 | 1585 | |
df26cfe8 LM |
1586 | if (copy_from_user(&flags, arg, sizeof(flags))) |
1587 | return -EFAULT; | |
1da177e4 | 1588 | |
df26cfe8 LM |
1589 | if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
1590 | FS_NOATIME_FL | FS_NODUMP_FL | \ | |
1591 | FS_SYNC_FL)) | |
1592 | return -EOPNOTSUPP; | |
1da177e4 | 1593 | |
25fe55e8 | 1594 | fa.fsx_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip)); |
1da177e4 | 1595 | |
d9457dc0 JK |
1596 | error = mnt_want_write_file(filp); |
1597 | if (error) | |
1598 | return error; | |
f96291f6 | 1599 | |
e4f9ba20 | 1600 | xfs_ioctl_setattr_prepare_dax(ip, &fa); |
3a6a854a | 1601 | |
e4f9ba20 | 1602 | tp = xfs_ioctl_setattr_get_trans(ip); |
f96291f6 DC |
1603 | if (IS_ERR(tp)) { |
1604 | error = PTR_ERR(tp); | |
1605 | goto out_drop_write; | |
1606 | } | |
1607 | ||
7b0e492e DW |
1608 | xfs_fill_fsxattr(ip, false, &old_fa); |
1609 | error = vfs_ioc_fssetxattr_check(VFS_I(ip), &old_fa, &fa); | |
1610 | if (error) { | |
1611 | xfs_trans_cancel(tp); | |
1612 | goto out_drop_write; | |
1613 | } | |
1614 | ||
f96291f6 DC |
1615 | error = xfs_ioctl_setattr_xflags(tp, ip, &fa); |
1616 | if (error) { | |
4906e215 | 1617 | xfs_trans_cancel(tp); |
f96291f6 DC |
1618 | goto out_drop_write; |
1619 | } | |
1620 | ||
70393313 | 1621 | error = xfs_trans_commit(tp); |
f96291f6 | 1622 | out_drop_write: |
d9457dc0 | 1623 | mnt_drop_write_file(filp); |
2451337d | 1624 | return error; |
1da177e4 LT |
1625 | } |
1626 | ||
232b5194 CH |
1627 | static bool |
1628 | xfs_getbmap_format( | |
1629 | struct kgetbmap *p, | |
1630 | struct getbmapx __user *u, | |
1631 | size_t recsize) | |
8a7141a8 | 1632 | { |
232b5194 CH |
1633 | if (put_user(p->bmv_offset, &u->bmv_offset) || |
1634 | put_user(p->bmv_block, &u->bmv_block) || | |
1635 | put_user(p->bmv_length, &u->bmv_length) || | |
1636 | put_user(0, &u->bmv_count) || | |
1637 | put_user(0, &u->bmv_entries)) | |
1638 | return false; | |
1639 | if (recsize < sizeof(struct getbmapx)) | |
1640 | return true; | |
1641 | if (put_user(0, &u->bmv_iflags) || | |
1642 | put_user(p->bmv_oflags, &u->bmv_oflags) || | |
1643 | put_user(0, &u->bmv_unused1) || | |
1644 | put_user(0, &u->bmv_unused2)) | |
1645 | return false; | |
1646 | return true; | |
8a7141a8 ES |
1647 | } |
1648 | ||
1da177e4 LT |
1649 | STATIC int |
1650 | xfs_ioc_getbmap( | |
8f3e2058 | 1651 | struct file *file, |
1da177e4 LT |
1652 | unsigned int cmd, |
1653 | void __user *arg) | |
1654 | { | |
be6324c0 | 1655 | struct getbmapx bmx = { 0 }; |
232b5194 CH |
1656 | struct kgetbmap *buf; |
1657 | size_t recsize; | |
1658 | int error, i; | |
1da177e4 | 1659 | |
232b5194 CH |
1660 | switch (cmd) { |
1661 | case XFS_IOC_GETBMAPA: | |
1662 | bmx.bmv_iflags = BMV_IF_ATTRFORK; | |
1663 | /*FALLTHRU*/ | |
1664 | case XFS_IOC_GETBMAP: | |
1665 | if (file->f_mode & FMODE_NOCMTIME) | |
1666 | bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; | |
1667 | /* struct getbmap is a strict subset of struct getbmapx. */ | |
1668 | recsize = sizeof(struct getbmap); | |
1669 | break; | |
1670 | case XFS_IOC_GETBMAPX: | |
1671 | recsize = sizeof(struct getbmapx); | |
1672 | break; | |
1673 | default: | |
b474c7ae | 1674 | return -EINVAL; |
232b5194 | 1675 | } |
1da177e4 | 1676 | |
232b5194 | 1677 | if (copy_from_user(&bmx, arg, recsize)) |
b474c7ae | 1678 | return -EFAULT; |
1da177e4 LT |
1679 | |
1680 | if (bmx.bmv_count < 2) | |
b474c7ae | 1681 | return -EINVAL; |
232b5194 CH |
1682 | if (bmx.bmv_count > ULONG_MAX / recsize) |
1683 | return -ENOMEM; | |
1da177e4 | 1684 | |
232b5194 CH |
1685 | buf = kmem_zalloc_large(bmx.bmv_count * sizeof(*buf), 0); |
1686 | if (!buf) | |
1687 | return -ENOMEM; | |
1da177e4 | 1688 | |
232b5194 | 1689 | error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, buf); |
1da177e4 | 1690 | if (error) |
232b5194 | 1691 | goto out_free_buf; |
1da177e4 | 1692 | |
232b5194 CH |
1693 | error = -EFAULT; |
1694 | if (copy_to_user(arg, &bmx, recsize)) | |
1695 | goto out_free_buf; | |
1696 | arg += recsize; | |
1697 | ||
1698 | for (i = 0; i < bmx.bmv_entries; i++) { | |
1699 | if (!xfs_getbmap_format(buf + i, arg, recsize)) | |
1700 | goto out_free_buf; | |
1701 | arg += recsize; | |
1702 | } | |
1da177e4 | 1703 | |
232b5194 CH |
1704 | error = 0; |
1705 | out_free_buf: | |
1706 | kmem_free(buf); | |
132bf672 | 1707 | return error; |
1da177e4 | 1708 | } |
df26cfe8 | 1709 | |
e89c0413 DW |
1710 | struct getfsmap_info { |
1711 | struct xfs_mount *mp; | |
9d17e14c CH |
1712 | struct fsmap_head __user *data; |
1713 | unsigned int idx; | |
e89c0413 DW |
1714 | __u32 last_flags; |
1715 | }; | |
1716 | ||
1717 | STATIC int | |
1718 | xfs_getfsmap_format(struct xfs_fsmap *xfm, void *priv) | |
1719 | { | |
1720 | struct getfsmap_info *info = priv; | |
1721 | struct fsmap fm; | |
1722 | ||
1723 | trace_xfs_getfsmap_mapping(info->mp, xfm); | |
1724 | ||
1725 | info->last_flags = xfm->fmr_flags; | |
1726 | xfs_fsmap_from_internal(&fm, xfm); | |
9d17e14c CH |
1727 | if (copy_to_user(&info->data->fmh_recs[info->idx++], &fm, |
1728 | sizeof(struct fsmap))) | |
e89c0413 DW |
1729 | return -EFAULT; |
1730 | ||
e89c0413 DW |
1731 | return 0; |
1732 | } | |
1733 | ||
1734 | STATIC int | |
1735 | xfs_ioc_getfsmap( | |
1736 | struct xfs_inode *ip, | |
9d17e14c | 1737 | struct fsmap_head __user *arg) |
e89c0413 | 1738 | { |
ef2b67ec | 1739 | struct getfsmap_info info = { NULL }; |
e89c0413 DW |
1740 | struct xfs_fsmap_head xhead = {0}; |
1741 | struct fsmap_head head; | |
1742 | bool aborted = false; | |
1743 | int error; | |
1744 | ||
1745 | if (copy_from_user(&head, arg, sizeof(struct fsmap_head))) | |
1746 | return -EFAULT; | |
1747 | if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) || | |
1748 | memchr_inv(head.fmh_keys[0].fmr_reserved, 0, | |
1749 | sizeof(head.fmh_keys[0].fmr_reserved)) || | |
1750 | memchr_inv(head.fmh_keys[1].fmr_reserved, 0, | |
1751 | sizeof(head.fmh_keys[1].fmr_reserved))) | |
1752 | return -EINVAL; | |
1753 | ||
1754 | xhead.fmh_iflags = head.fmh_iflags; | |
1755 | xhead.fmh_count = head.fmh_count; | |
1756 | xfs_fsmap_to_internal(&xhead.fmh_keys[0], &head.fmh_keys[0]); | |
1757 | xfs_fsmap_to_internal(&xhead.fmh_keys[1], &head.fmh_keys[1]); | |
1758 | ||
1759 | trace_xfs_getfsmap_low_key(ip->i_mount, &xhead.fmh_keys[0]); | |
1760 | trace_xfs_getfsmap_high_key(ip->i_mount, &xhead.fmh_keys[1]); | |
1761 | ||
1762 | info.mp = ip->i_mount; | |
9d17e14c | 1763 | info.data = arg; |
e89c0413 | 1764 | error = xfs_getfsmap(ip->i_mount, &xhead, xfs_getfsmap_format, &info); |
e7ee96df | 1765 | if (error == -ECANCELED) { |
e89c0413 DW |
1766 | error = 0; |
1767 | aborted = true; | |
1768 | } else if (error) | |
1769 | return error; | |
1770 | ||
1771 | /* If we didn't abort, set the "last" flag in the last fmx */ | |
12e4a381 | 1772 | if (!aborted && info.idx) { |
e89c0413 | 1773 | info.last_flags |= FMR_OF_LAST; |
9d17e14c CH |
1774 | if (copy_to_user(&info.data->fmh_recs[info.idx - 1].fmr_flags, |
1775 | &info.last_flags, sizeof(info.last_flags))) | |
e89c0413 DW |
1776 | return -EFAULT; |
1777 | } | |
1778 | ||
1779 | /* copy back header */ | |
1780 | head.fmh_entries = xhead.fmh_entries; | |
1781 | head.fmh_oflags = xhead.fmh_oflags; | |
1782 | if (copy_to_user(arg, &head, sizeof(struct fsmap_head))) | |
1783 | return -EFAULT; | |
1784 | ||
1785 | return 0; | |
1786 | } | |
1787 | ||
36fd6e86 DW |
1788 | STATIC int |
1789 | xfs_ioc_scrub_metadata( | |
1790 | struct xfs_inode *ip, | |
1791 | void __user *arg) | |
1792 | { | |
1793 | struct xfs_scrub_metadata scrub; | |
1794 | int error; | |
1795 | ||
1796 | if (!capable(CAP_SYS_ADMIN)) | |
1797 | return -EPERM; | |
1798 | ||
1799 | if (copy_from_user(&scrub, arg, sizeof(scrub))) | |
1800 | return -EFAULT; | |
1801 | ||
1802 | error = xfs_scrub_metadata(ip, &scrub); | |
1803 | if (error) | |
1804 | return error; | |
1805 | ||
1806 | if (copy_to_user(arg, &scrub, sizeof(scrub))) | |
1807 | return -EFAULT; | |
1808 | ||
1809 | return 0; | |
1810 | } | |
1811 | ||
a133d952 DC |
1812 | int |
1813 | xfs_ioc_swapext( | |
1814 | xfs_swapext_t *sxp) | |
1815 | { | |
1816 | xfs_inode_t *ip, *tip; | |
1817 | struct fd f, tmp; | |
1818 | int error = 0; | |
1819 | ||
1820 | /* Pull information for the target fd */ | |
1821 | f = fdget((int)sxp->sx_fdtarget); | |
1822 | if (!f.file) { | |
2451337d | 1823 | error = -EINVAL; |
a133d952 DC |
1824 | goto out; |
1825 | } | |
1826 | ||
1827 | if (!(f.file->f_mode & FMODE_WRITE) || | |
1828 | !(f.file->f_mode & FMODE_READ) || | |
1829 | (f.file->f_flags & O_APPEND)) { | |
2451337d | 1830 | error = -EBADF; |
a133d952 DC |
1831 | goto out_put_file; |
1832 | } | |
1833 | ||
1834 | tmp = fdget((int)sxp->sx_fdtmp); | |
1835 | if (!tmp.file) { | |
2451337d | 1836 | error = -EINVAL; |
a133d952 DC |
1837 | goto out_put_file; |
1838 | } | |
1839 | ||
1840 | if (!(tmp.file->f_mode & FMODE_WRITE) || | |
1841 | !(tmp.file->f_mode & FMODE_READ) || | |
1842 | (tmp.file->f_flags & O_APPEND)) { | |
2451337d | 1843 | error = -EBADF; |
a133d952 DC |
1844 | goto out_put_tmp_file; |
1845 | } | |
1846 | ||
1847 | if (IS_SWAPFILE(file_inode(f.file)) || | |
1848 | IS_SWAPFILE(file_inode(tmp.file))) { | |
2451337d | 1849 | error = -EINVAL; |
a133d952 DC |
1850 | goto out_put_tmp_file; |
1851 | } | |
1852 | ||
7f1b6245 JH |
1853 | /* |
1854 | * We need to ensure that the fds passed in point to XFS inodes | |
1855 | * before we cast and access them as XFS structures as we have no | |
1856 | * control over what the user passes us here. | |
1857 | */ | |
1858 | if (f.file->f_op != &xfs_file_operations || | |
1859 | tmp.file->f_op != &xfs_file_operations) { | |
1860 | error = -EINVAL; | |
1861 | goto out_put_tmp_file; | |
1862 | } | |
1863 | ||
a133d952 DC |
1864 | ip = XFS_I(file_inode(f.file)); |
1865 | tip = XFS_I(file_inode(tmp.file)); | |
1866 | ||
1867 | if (ip->i_mount != tip->i_mount) { | |
2451337d | 1868 | error = -EINVAL; |
a133d952 DC |
1869 | goto out_put_tmp_file; |
1870 | } | |
1871 | ||
1872 | if (ip->i_ino == tip->i_ino) { | |
2451337d | 1873 | error = -EINVAL; |
a133d952 DC |
1874 | goto out_put_tmp_file; |
1875 | } | |
1876 | ||
1877 | if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { | |
2451337d | 1878 | error = -EIO; |
a133d952 DC |
1879 | goto out_put_tmp_file; |
1880 | } | |
1881 | ||
1882 | error = xfs_swap_extents(ip, tip, sxp); | |
1883 | ||
1884 | out_put_tmp_file: | |
1885 | fdput(tmp); | |
1886 | out_put_file: | |
1887 | fdput(f); | |
1888 | out: | |
1889 | return error; | |
1890 | } | |
1891 | ||
f7664b31 ES |
1892 | static int |
1893 | xfs_ioc_getlabel( | |
1894 | struct xfs_mount *mp, | |
1895 | char __user *user_label) | |
1896 | { | |
1897 | struct xfs_sb *sbp = &mp->m_sb; | |
1898 | char label[XFSLABEL_MAX + 1]; | |
1899 | ||
1900 | /* Paranoia */ | |
1901 | BUILD_BUG_ON(sizeof(sbp->sb_fname) > FSLABEL_MAX); | |
1902 | ||
4bb8b65a AB |
1903 | /* 1 larger than sb_fname, so this ensures a trailing NUL char */ |
1904 | memset(label, 0, sizeof(label)); | |
f7664b31 | 1905 | spin_lock(&mp->m_sb_lock); |
4bb8b65a | 1906 | strncpy(label, sbp->sb_fname, XFSLABEL_MAX); |
f7664b31 ES |
1907 | spin_unlock(&mp->m_sb_lock); |
1908 | ||
4bb8b65a | 1909 | if (copy_to_user(user_label, label, sizeof(label))) |
f7664b31 ES |
1910 | return -EFAULT; |
1911 | return 0; | |
1912 | } | |
1913 | ||
1914 | static int | |
1915 | xfs_ioc_setlabel( | |
1916 | struct file *filp, | |
1917 | struct xfs_mount *mp, | |
1918 | char __user *newlabel) | |
1919 | { | |
1920 | struct xfs_sb *sbp = &mp->m_sb; | |
1921 | char label[XFSLABEL_MAX + 1]; | |
1922 | size_t len; | |
1923 | int error; | |
1924 | ||
1925 | if (!capable(CAP_SYS_ADMIN)) | |
1926 | return -EPERM; | |
1927 | /* | |
1928 | * The generic ioctl allows up to FSLABEL_MAX chars, but XFS is much | |
1929 | * smaller, at 12 bytes. We copy one more to be sure we find the | |
1930 | * (required) NULL character to test the incoming label length. | |
1931 | * NB: The on disk label doesn't need to be null terminated. | |
1932 | */ | |
1933 | if (copy_from_user(label, newlabel, XFSLABEL_MAX + 1)) | |
1934 | return -EFAULT; | |
1935 | len = strnlen(label, XFSLABEL_MAX + 1); | |
1936 | if (len > sizeof(sbp->sb_fname)) | |
1937 | return -EINVAL; | |
1938 | ||
1939 | error = mnt_want_write_file(filp); | |
1940 | if (error) | |
1941 | return error; | |
1942 | ||
1943 | spin_lock(&mp->m_sb_lock); | |
1944 | memset(sbp->sb_fname, 0, sizeof(sbp->sb_fname)); | |
4bb8b65a | 1945 | memcpy(sbp->sb_fname, label, len); |
f7664b31 ES |
1946 | spin_unlock(&mp->m_sb_lock); |
1947 | ||
1948 | /* | |
1949 | * Now we do several things to satisfy userspace. | |
1950 | * In addition to normal logging of the primary superblock, we also | |
1951 | * immediately write these changes to sector zero for the primary, then | |
1952 | * update all backup supers (as xfs_db does for a label change), then | |
1953 | * invalidate the block device page cache. This is so that any prior | |
1954 | * buffered reads from userspace (i.e. from blkid) are invalidated, | |
1955 | * and userspace will see the newly-written label. | |
1956 | */ | |
1957 | error = xfs_sync_sb_buf(mp); | |
1958 | if (error) | |
1959 | goto out; | |
1960 | /* | |
1961 | * growfs also updates backup supers so lock against that. | |
1962 | */ | |
1963 | mutex_lock(&mp->m_growlock); | |
1964 | error = xfs_update_secondary_sbs(mp); | |
1965 | mutex_unlock(&mp->m_growlock); | |
1966 | ||
1967 | invalidate_bdev(mp->m_ddev_targp->bt_bdev); | |
1968 | ||
1969 | out: | |
1970 | mnt_drop_write_file(filp); | |
1971 | return error; | |
1972 | } | |
1973 | ||
3737bb2c DW |
1974 | static inline int |
1975 | xfs_fs_eofblocks_from_user( | |
1976 | struct xfs_fs_eofblocks *src, | |
1977 | struct xfs_eofblocks *dst) | |
1978 | { | |
1979 | if (src->eof_version != XFS_EOFBLOCKS_VERSION) | |
1980 | return -EINVAL; | |
1981 | ||
1982 | if (src->eof_flags & ~XFS_EOF_FLAGS_VALID) | |
1983 | return -EINVAL; | |
1984 | ||
1985 | if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) || | |
1986 | memchr_inv(src->pad64, 0, sizeof(src->pad64))) | |
1987 | return -EINVAL; | |
1988 | ||
1989 | dst->eof_flags = src->eof_flags; | |
1990 | dst->eof_prid = src->eof_prid; | |
1991 | dst->eof_min_file_size = src->eof_min_file_size; | |
1992 | ||
1993 | dst->eof_uid = INVALID_UID; | |
1994 | if (src->eof_flags & XFS_EOF_FLAGS_UID) { | |
1995 | dst->eof_uid = make_kuid(current_user_ns(), src->eof_uid); | |
1996 | if (!uid_valid(dst->eof_uid)) | |
1997 | return -EINVAL; | |
1998 | } | |
1999 | ||
2000 | dst->eof_gid = INVALID_GID; | |
2001 | if (src->eof_flags & XFS_EOF_FLAGS_GID) { | |
2002 | dst->eof_gid = make_kgid(current_user_ns(), src->eof_gid); | |
2003 | if (!gid_valid(dst->eof_gid)) | |
2004 | return -EINVAL; | |
2005 | } | |
2006 | return 0; | |
2007 | } | |
2008 | ||
4d4be482 CH |
2009 | /* |
2010 | * Note: some of the ioctl's return positive numbers as a | |
2011 | * byte count indicating success, such as readlink_by_handle. | |
2012 | * So we don't "sign flip" like most other routines. This means | |
2013 | * true errors need to be returned as a negative value. | |
2014 | */ | |
2015 | long | |
2016 | xfs_file_ioctl( | |
df26cfe8 | 2017 | struct file *filp, |
df26cfe8 | 2018 | unsigned int cmd, |
4d4be482 | 2019 | unsigned long p) |
df26cfe8 | 2020 | { |
496ad9aa | 2021 | struct inode *inode = file_inode(filp); |
4d4be482 CH |
2022 | struct xfs_inode *ip = XFS_I(inode); |
2023 | struct xfs_mount *mp = ip->i_mount; | |
2024 | void __user *arg = (void __user *)p; | |
df26cfe8 LM |
2025 | int error; |
2026 | ||
cca28fb8 | 2027 | trace_xfs_file_ioctl(ip); |
4d4be482 CH |
2028 | |
2029 | switch (cmd) { | |
a46db608 CH |
2030 | case FITRIM: |
2031 | return xfs_ioc_trim(mp, arg); | |
f7664b31 ES |
2032 | case FS_IOC_GETFSLABEL: |
2033 | return xfs_ioc_getlabel(mp, arg); | |
2034 | case FS_IOC_SETFSLABEL: | |
2035 | return xfs_ioc_setlabel(filp, mp, arg); | |
df26cfe8 LM |
2036 | case XFS_IOC_ALLOCSP: |
2037 | case XFS_IOC_FREESP: | |
df26cfe8 | 2038 | case XFS_IOC_ALLOCSP64: |
837a6e7f | 2039 | case XFS_IOC_FREESP64: { |
743bb465 | 2040 | xfs_flock64_t bf; |
df26cfe8 | 2041 | |
743bb465 | 2042 | if (copy_from_user(&bf, arg, sizeof(bf))) |
b474c7ae | 2043 | return -EFAULT; |
837a6e7f | 2044 | return xfs_ioc_space(filp, &bf); |
743bb465 | 2045 | } |
df26cfe8 | 2046 | case XFS_IOC_DIOINFO: { |
c7d68318 CH |
2047 | struct xfs_buftarg *target = xfs_inode_buftarg(ip); |
2048 | struct dioattr da; | |
df26cfe8 | 2049 | |
7c71ee78 | 2050 | da.d_mem = da.d_miniosz = target->bt_logical_sectorsize; |
df26cfe8 LM |
2051 | da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); |
2052 | ||
2053 | if (copy_to_user(arg, &da, sizeof(da))) | |
b474c7ae | 2054 | return -EFAULT; |
df26cfe8 LM |
2055 | return 0; |
2056 | } | |
2057 | ||
2058 | case XFS_IOC_FSBULKSTAT_SINGLE: | |
2059 | case XFS_IOC_FSBULKSTAT: | |
2060 | case XFS_IOC_FSINUMBERS: | |
8bfe9d18 | 2061 | return xfs_ioc_fsbulkstat(mp, cmd, arg); |
df26cfe8 | 2062 | |
0448b6f4 | 2063 | case XFS_IOC_BULKSTAT: |
df26cfe8 | 2064 | return xfs_ioc_bulkstat(mp, cmd, arg); |
fba9760a DW |
2065 | case XFS_IOC_INUMBERS: |
2066 | return xfs_ioc_inumbers(mp, cmd, arg); | |
df26cfe8 LM |
2067 | |
2068 | case XFS_IOC_FSGEOMETRY_V1: | |
1b6d968d DC |
2069 | return xfs_ioc_fsgeometry(mp, arg, 3); |
2070 | case XFS_IOC_FSGEOMETRY_V4: | |
2071 | return xfs_ioc_fsgeometry(mp, arg, 4); | |
df26cfe8 | 2072 | case XFS_IOC_FSGEOMETRY: |
1b6d968d | 2073 | return xfs_ioc_fsgeometry(mp, arg, 5); |
df26cfe8 | 2074 | |
7cd5006b DW |
2075 | case XFS_IOC_AG_GEOMETRY: |
2076 | return xfs_ioc_ag_geometry(mp, arg); | |
2077 | ||
df26cfe8 LM |
2078 | case XFS_IOC_GETVERSION: |
2079 | return put_user(inode->i_generation, (int __user *)arg); | |
2080 | ||
2081 | case XFS_IOC_FSGETXATTR: | |
2082 | return xfs_ioc_fsgetxattr(ip, 0, arg); | |
2083 | case XFS_IOC_FSGETXATTRA: | |
2084 | return xfs_ioc_fsgetxattr(ip, 1, arg); | |
65e67f51 LM |
2085 | case XFS_IOC_FSSETXATTR: |
2086 | return xfs_ioc_fssetxattr(ip, filp, arg); | |
df26cfe8 | 2087 | case XFS_IOC_GETXFLAGS: |
65e67f51 | 2088 | return xfs_ioc_getxflags(ip, arg); |
df26cfe8 | 2089 | case XFS_IOC_SETXFLAGS: |
65e67f51 | 2090 | return xfs_ioc_setxflags(ip, filp, arg); |
df26cfe8 | 2091 | |
df26cfe8 LM |
2092 | case XFS_IOC_GETBMAP: |
2093 | case XFS_IOC_GETBMAPA: | |
df26cfe8 | 2094 | case XFS_IOC_GETBMAPX: |
232b5194 | 2095 | return xfs_ioc_getbmap(filp, cmd, arg); |
df26cfe8 | 2096 | |
e89c0413 DW |
2097 | case FS_IOC_GETFSMAP: |
2098 | return xfs_ioc_getfsmap(ip, arg); | |
2099 | ||
36fd6e86 DW |
2100 | case XFS_IOC_SCRUB_METADATA: |
2101 | return xfs_ioc_scrub_metadata(ip, arg); | |
2102 | ||
df26cfe8 LM |
2103 | case XFS_IOC_FD_TO_HANDLE: |
2104 | case XFS_IOC_PATH_TO_HANDLE: | |
743bb465 | 2105 | case XFS_IOC_PATH_TO_FSHANDLE: { |
2106 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 2107 | |
743bb465 | 2108 | if (copy_from_user(&hreq, arg, sizeof(hreq))) |
b474c7ae | 2109 | return -EFAULT; |
743bb465 | 2110 | return xfs_find_handle(cmd, &hreq); |
2111 | } | |
2112 | case XFS_IOC_OPEN_BY_HANDLE: { | |
2113 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 2114 | |
743bb465 | 2115 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 2116 | return -EFAULT; |
d296d30a | 2117 | return xfs_open_by_handle(filp, &hreq); |
743bb465 | 2118 | } |
df26cfe8 | 2119 | |
743bb465 | 2120 | case XFS_IOC_READLINK_BY_HANDLE: { |
2121 | xfs_fsop_handlereq_t hreq; | |
df26cfe8 | 2122 | |
743bb465 | 2123 | if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t))) |
b474c7ae | 2124 | return -EFAULT; |
d296d30a | 2125 | return xfs_readlink_by_handle(filp, &hreq); |
743bb465 | 2126 | } |
df26cfe8 | 2127 | case XFS_IOC_ATTRLIST_BY_HANDLE: |
d296d30a | 2128 | return xfs_attrlist_by_handle(filp, arg); |
df26cfe8 LM |
2129 | |
2130 | case XFS_IOC_ATTRMULTI_BY_HANDLE: | |
d296d30a | 2131 | return xfs_attrmulti_by_handle(filp, arg); |
df26cfe8 LM |
2132 | |
2133 | case XFS_IOC_SWAPEXT: { | |
743bb465 | 2134 | struct xfs_swapext sxp; |
2135 | ||
2136 | if (copy_from_user(&sxp, arg, sizeof(xfs_swapext_t))) | |
b474c7ae | 2137 | return -EFAULT; |
d9457dc0 JK |
2138 | error = mnt_want_write_file(filp); |
2139 | if (error) | |
2140 | return error; | |
a133d952 | 2141 | error = xfs_ioc_swapext(&sxp); |
d9457dc0 | 2142 | mnt_drop_write_file(filp); |
2451337d | 2143 | return error; |
df26cfe8 LM |
2144 | } |
2145 | ||
2146 | case XFS_IOC_FSCOUNTS: { | |
2147 | xfs_fsop_counts_t out; | |
2148 | ||
91083269 | 2149 | xfs_fs_counts(mp, &out); |
df26cfe8 LM |
2150 | |
2151 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 2152 | return -EFAULT; |
df26cfe8 LM |
2153 | return 0; |
2154 | } | |
2155 | ||
2156 | case XFS_IOC_SET_RESBLKS: { | |
2157 | xfs_fsop_resblks_t inout; | |
c8ce540d | 2158 | uint64_t in; |
df26cfe8 LM |
2159 | |
2160 | if (!capable(CAP_SYS_ADMIN)) | |
2161 | return -EPERM; | |
2162 | ||
d5db0f97 | 2163 | if (mp->m_flags & XFS_MOUNT_RDONLY) |
b474c7ae | 2164 | return -EROFS; |
d5db0f97 | 2165 | |
df26cfe8 | 2166 | if (copy_from_user(&inout, arg, sizeof(inout))) |
b474c7ae | 2167 | return -EFAULT; |
df26cfe8 | 2168 | |
d9457dc0 JK |
2169 | error = mnt_want_write_file(filp); |
2170 | if (error) | |
2171 | return error; | |
2172 | ||
df26cfe8 LM |
2173 | /* input parameter is passed in resblks field of structure */ |
2174 | in = inout.resblks; | |
2175 | error = xfs_reserve_blocks(mp, &in, &inout); | |
d9457dc0 | 2176 | mnt_drop_write_file(filp); |
df26cfe8 | 2177 | if (error) |
2451337d | 2178 | return error; |
df26cfe8 LM |
2179 | |
2180 | if (copy_to_user(arg, &inout, sizeof(inout))) | |
b474c7ae | 2181 | return -EFAULT; |
df26cfe8 LM |
2182 | return 0; |
2183 | } | |
2184 | ||
2185 | case XFS_IOC_GET_RESBLKS: { | |
2186 | xfs_fsop_resblks_t out; | |
2187 | ||
2188 | if (!capable(CAP_SYS_ADMIN)) | |
2189 | return -EPERM; | |
2190 | ||
2191 | error = xfs_reserve_blocks(mp, NULL, &out); | |
2192 | if (error) | |
2451337d | 2193 | return error; |
df26cfe8 LM |
2194 | |
2195 | if (copy_to_user(arg, &out, sizeof(out))) | |
b474c7ae | 2196 | return -EFAULT; |
df26cfe8 LM |
2197 | |
2198 | return 0; | |
2199 | } | |
2200 | ||
2201 | case XFS_IOC_FSGROWFSDATA: { | |
2202 | xfs_growfs_data_t in; | |
2203 | ||
df26cfe8 | 2204 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 2205 | return -EFAULT; |
df26cfe8 | 2206 | |
d9457dc0 JK |
2207 | error = mnt_want_write_file(filp); |
2208 | if (error) | |
2209 | return error; | |
df26cfe8 | 2210 | error = xfs_growfs_data(mp, &in); |
d9457dc0 | 2211 | mnt_drop_write_file(filp); |
2451337d | 2212 | return error; |
df26cfe8 LM |
2213 | } |
2214 | ||
2215 | case XFS_IOC_FSGROWFSLOG: { | |
2216 | xfs_growfs_log_t in; | |
2217 | ||
df26cfe8 | 2218 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 2219 | return -EFAULT; |
df26cfe8 | 2220 | |
d9457dc0 JK |
2221 | error = mnt_want_write_file(filp); |
2222 | if (error) | |
2223 | return error; | |
df26cfe8 | 2224 | error = xfs_growfs_log(mp, &in); |
d9457dc0 | 2225 | mnt_drop_write_file(filp); |
2451337d | 2226 | return error; |
df26cfe8 LM |
2227 | } |
2228 | ||
2229 | case XFS_IOC_FSGROWFSRT: { | |
2230 | xfs_growfs_rt_t in; | |
2231 | ||
df26cfe8 | 2232 | if (copy_from_user(&in, arg, sizeof(in))) |
b474c7ae | 2233 | return -EFAULT; |
df26cfe8 | 2234 | |
d9457dc0 JK |
2235 | error = mnt_want_write_file(filp); |
2236 | if (error) | |
2237 | return error; | |
df26cfe8 | 2238 | error = xfs_growfs_rt(mp, &in); |
d9457dc0 | 2239 | mnt_drop_write_file(filp); |
2451337d | 2240 | return error; |
df26cfe8 LM |
2241 | } |
2242 | ||
df26cfe8 | 2243 | case XFS_IOC_GOINGDOWN: { |
c8ce540d | 2244 | uint32_t in; |
df26cfe8 LM |
2245 | |
2246 | if (!capable(CAP_SYS_ADMIN)) | |
2247 | return -EPERM; | |
2248 | ||
c8ce540d | 2249 | if (get_user(in, (uint32_t __user *)arg)) |
b474c7ae | 2250 | return -EFAULT; |
df26cfe8 | 2251 | |
2451337d | 2252 | return xfs_fs_goingdown(mp, in); |
df26cfe8 LM |
2253 | } |
2254 | ||
2255 | case XFS_IOC_ERROR_INJECTION: { | |
2256 | xfs_error_injection_t in; | |
2257 | ||
2258 | if (!capable(CAP_SYS_ADMIN)) | |
2259 | return -EPERM; | |
2260 | ||
2261 | if (copy_from_user(&in, arg, sizeof(in))) | |
b474c7ae | 2262 | return -EFAULT; |
df26cfe8 | 2263 | |
31965ef3 | 2264 | return xfs_errortag_add(mp, in.errtag); |
df26cfe8 LM |
2265 | } |
2266 | ||
2267 | case XFS_IOC_ERROR_CLEARALL: | |
2268 | if (!capable(CAP_SYS_ADMIN)) | |
2269 | return -EPERM; | |
2270 | ||
31965ef3 | 2271 | return xfs_errortag_clearall(mp); |
df26cfe8 | 2272 | |
8ca149de | 2273 | case XFS_IOC_FREE_EOFBLOCKS: { |
b9fe5052 DE |
2274 | struct xfs_fs_eofblocks eofb; |
2275 | struct xfs_eofblocks keofb; | |
8ca149de | 2276 | |
8c567a7f DE |
2277 | if (!capable(CAP_SYS_ADMIN)) |
2278 | return -EPERM; | |
2279 | ||
2280 | if (mp->m_flags & XFS_MOUNT_RDONLY) | |
b474c7ae | 2281 | return -EROFS; |
8c567a7f | 2282 | |
8ca149de | 2283 | if (copy_from_user(&eofb, arg, sizeof(eofb))) |
b474c7ae | 2284 | return -EFAULT; |
8ca149de | 2285 | |
b9fe5052 DE |
2286 | error = xfs_fs_eofblocks_from_user(&eofb, &keofb); |
2287 | if (error) | |
2451337d | 2288 | return error; |
8ca149de | 2289 | |
4b674b9a BF |
2290 | sb_start_write(mp->m_super); |
2291 | error = xfs_icache_free_eofblocks(mp, &keofb); | |
2292 | sb_end_write(mp->m_super); | |
2293 | return error; | |
8ca149de BF |
2294 | } |
2295 | ||
df26cfe8 LM |
2296 | default: |
2297 | return -ENOTTY; | |
2298 | } | |
2299 | } |