Commit | Line | Data |
---|---|---|
ac27a0ec | 1 | /* |
617ba13b | 2 | * linux/fs/ext4/ioctl.c |
ac27a0ec DK |
3 | * |
4 | * Copyright (C) 1993, 1994, 1995 | |
5 | * Remy Card (card@masi.ibp.fr) | |
6 | * Laboratoire MASI - Institut Blaise Pascal | |
7 | * Universite Pierre et Marie Curie (Paris VI) | |
8 | */ | |
9 | ||
10 | #include <linux/fs.h> | |
ac27a0ec | 11 | #include <linux/capability.h> |
ac27a0ec DK |
12 | #include <linux/time.h> |
13 | #include <linux/compat.h> | |
42a74f20 | 14 | #include <linux/mount.h> |
748de673 | 15 | #include <linux/file.h> |
9b7365fc | 16 | #include <linux/quotaops.h> |
8da4b8c4 | 17 | #include <linux/uuid.h> |
7c0f6ba6 | 18 | #include <linux/uaccess.h> |
783d9485 | 19 | #include <linux/delay.h> |
3dcf5451 CH |
20 | #include "ext4_jbd2.h" |
21 | #include "ext4.h" | |
0c9ec4be DW |
22 | #include <linux/fsmap.h> |
23 | #include "fsmap.h" | |
24 | #include <trace/events/ext4.h> | |
ac27a0ec | 25 | |
393d1d1d DTB |
26 | /** |
27 | * Swap memory between @a and @b for @len bytes. | |
28 | * | |
29 | * @a: pointer to first memory area | |
30 | * @b: pointer to second memory area | |
31 | * @len: number of bytes to swap | |
32 | * | |
33 | */ | |
34 | static void memswap(void *a, void *b, size_t len) | |
35 | { | |
36 | unsigned char *ap, *bp; | |
393d1d1d DTB |
37 | |
38 | ap = (unsigned char *)a; | |
39 | bp = (unsigned char *)b; | |
40 | while (len-- > 0) { | |
4b7e2db5 | 41 | swap(*ap, *bp); |
393d1d1d DTB |
42 | ap++; |
43 | bp++; | |
44 | } | |
45 | } | |
46 | ||
47 | /** | |
48 | * Swap i_data and associated attributes between @inode1 and @inode2. | |
49 | * This function is used for the primary swap between inode1 and inode2 | |
50 | * and also to revert this primary swap in case of errors. | |
51 | * | |
52 | * Therefore you have to make sure, that calling this method twice | |
53 | * will revert all changes. | |
54 | * | |
55 | * @inode1: pointer to first inode | |
56 | * @inode2: pointer to second inode | |
57 | */ | |
58 | static void swap_inode_data(struct inode *inode1, struct inode *inode2) | |
59 | { | |
60 | loff_t isize; | |
61 | struct ext4_inode_info *ei1; | |
62 | struct ext4_inode_info *ei2; | |
63 | ||
64 | ei1 = EXT4_I(inode1); | |
65 | ei2 = EXT4_I(inode2); | |
66 | ||
67 | memswap(&inode1->i_flags, &inode2->i_flags, sizeof(inode1->i_flags)); | |
68 | memswap(&inode1->i_version, &inode2->i_version, | |
69 | sizeof(inode1->i_version)); | |
70 | memswap(&inode1->i_blocks, &inode2->i_blocks, | |
71 | sizeof(inode1->i_blocks)); | |
72 | memswap(&inode1->i_bytes, &inode2->i_bytes, sizeof(inode1->i_bytes)); | |
73 | memswap(&inode1->i_atime, &inode2->i_atime, sizeof(inode1->i_atime)); | |
74 | memswap(&inode1->i_mtime, &inode2->i_mtime, sizeof(inode1->i_mtime)); | |
75 | ||
76 | memswap(ei1->i_data, ei2->i_data, sizeof(ei1->i_data)); | |
77 | memswap(&ei1->i_flags, &ei2->i_flags, sizeof(ei1->i_flags)); | |
78 | memswap(&ei1->i_disksize, &ei2->i_disksize, sizeof(ei1->i_disksize)); | |
cde2d7a7 TT |
79 | ext4_es_remove_extent(inode1, 0, EXT_MAX_BLOCKS); |
80 | ext4_es_remove_extent(inode2, 0, EXT_MAX_BLOCKS); | |
393d1d1d DTB |
81 | |
82 | isize = i_size_read(inode1); | |
83 | i_size_write(inode1, i_size_read(inode2)); | |
84 | i_size_write(inode2, isize); | |
85 | } | |
86 | ||
87 | /** | |
88 | * Swap the information from the given @inode and the inode | |
89 | * EXT4_BOOT_LOADER_INO. It will basically swap i_data and all other | |
90 | * important fields of the inodes. | |
91 | * | |
92 | * @sb: the super block of the filesystem | |
93 | * @inode: the inode to swap with EXT4_BOOT_LOADER_INO | |
94 | * | |
95 | */ | |
96 | static long swap_inode_boot_loader(struct super_block *sb, | |
97 | struct inode *inode) | |
98 | { | |
99 | handle_t *handle; | |
100 | int err; | |
101 | struct inode *inode_bl; | |
393d1d1d | 102 | struct ext4_inode_info *ei_bl; |
d7092ae2 | 103 | struct ext4_sb_info *sbi = EXT4_SB(sb); |
393d1d1d | 104 | |
d8558a29 TT |
105 | if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode)) |
106 | return -EINVAL; | |
393d1d1d | 107 | |
d8558a29 TT |
108 | if (!inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN)) |
109 | return -EPERM; | |
393d1d1d | 110 | |
393d1d1d | 111 | inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO); |
d8558a29 TT |
112 | if (IS_ERR(inode_bl)) |
113 | return PTR_ERR(inode_bl); | |
393d1d1d DTB |
114 | ei_bl = EXT4_I(inode_bl); |
115 | ||
116 | filemap_flush(inode->i_mapping); | |
117 | filemap_flush(inode_bl->i_mapping); | |
118 | ||
119 | /* Protect orig inodes against a truncate and make sure, | |
120 | * that only 1 swap_inode_boot_loader is running. */ | |
375e289e | 121 | lock_two_nondirectories(inode, inode_bl); |
393d1d1d DTB |
122 | |
123 | truncate_inode_pages(&inode->i_data, 0); | |
124 | truncate_inode_pages(&inode_bl->i_data, 0); | |
125 | ||
126 | /* Wait for all existing dio workers */ | |
127 | ext4_inode_block_unlocked_dio(inode); | |
128 | ext4_inode_block_unlocked_dio(inode_bl); | |
129 | inode_dio_wait(inode); | |
130 | inode_dio_wait(inode_bl); | |
131 | ||
132 | handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2); | |
133 | if (IS_ERR(handle)) { | |
134 | err = -EINVAL; | |
30d29b11 | 135 | goto journal_err_out; |
393d1d1d DTB |
136 | } |
137 | ||
138 | /* Protect extent tree against block allocations via delalloc */ | |
139 | ext4_double_down_write_data_sem(inode, inode_bl); | |
140 | ||
141 | if (inode_bl->i_nlink == 0) { | |
142 | /* this inode has never been used as a BOOT_LOADER */ | |
143 | set_nlink(inode_bl, 1); | |
144 | i_uid_write(inode_bl, 0); | |
145 | i_gid_write(inode_bl, 0); | |
146 | inode_bl->i_flags = 0; | |
147 | ei_bl->i_flags = 0; | |
148 | inode_bl->i_version = 1; | |
149 | i_size_write(inode_bl, 0); | |
150 | inode_bl->i_mode = S_IFREG; | |
e2b911c5 | 151 | if (ext4_has_feature_extents(sb)) { |
393d1d1d DTB |
152 | ext4_set_inode_flag(inode_bl, EXT4_INODE_EXTENTS); |
153 | ext4_ext_tree_init(handle, inode_bl); | |
154 | } else | |
155 | memset(ei_bl->i_data, 0, sizeof(ei_bl->i_data)); | |
156 | } | |
157 | ||
158 | swap_inode_data(inode, inode_bl); | |
159 | ||
eeca7ea1 | 160 | inode->i_ctime = inode_bl->i_ctime = current_time(inode); |
393d1d1d DTB |
161 | |
162 | spin_lock(&sbi->s_next_gen_lock); | |
163 | inode->i_generation = sbi->s_next_generation++; | |
164 | inode_bl->i_generation = sbi->s_next_generation++; | |
165 | spin_unlock(&sbi->s_next_gen_lock); | |
166 | ||
167 | ext4_discard_preallocations(inode); | |
168 | ||
169 | err = ext4_mark_inode_dirty(handle, inode); | |
170 | if (err < 0) { | |
171 | ext4_warning(inode->i_sb, | |
172 | "couldn't mark inode #%lu dirty (err %d)", | |
173 | inode->i_ino, err); | |
174 | /* Revert all changes: */ | |
175 | swap_inode_data(inode, inode_bl); | |
176 | } else { | |
177 | err = ext4_mark_inode_dirty(handle, inode_bl); | |
178 | if (err < 0) { | |
179 | ext4_warning(inode_bl->i_sb, | |
180 | "couldn't mark inode #%lu dirty (err %d)", | |
181 | inode_bl->i_ino, err); | |
182 | /* Revert all changes: */ | |
183 | swap_inode_data(inode, inode_bl); | |
184 | ext4_mark_inode_dirty(handle, inode); | |
185 | } | |
186 | } | |
393d1d1d | 187 | ext4_journal_stop(handle); |
393d1d1d DTB |
188 | ext4_double_up_write_data_sem(inode, inode_bl); |
189 | ||
30d29b11 | 190 | journal_err_out: |
393d1d1d DTB |
191 | ext4_inode_resume_unlocked_dio(inode); |
192 | ext4_inode_resume_unlocked_dio(inode_bl); | |
375e289e | 193 | unlock_two_nondirectories(inode, inode_bl); |
393d1d1d | 194 | iput(inode_bl); |
393d1d1d DTB |
195 | return err; |
196 | } | |
197 | ||
ba679017 | 198 | #ifdef CONFIG_EXT4_FS_ENCRYPTION |
9bd8212f MH |
199 | static int uuid_is_zero(__u8 u[16]) |
200 | { | |
201 | int i; | |
202 | ||
203 | for (i = 0; i < 16; i++) | |
204 | if (u[i]) | |
205 | return 0; | |
206 | return 1; | |
207 | } | |
ba679017 | 208 | #endif |
9bd8212f | 209 | |
9b7365fc LX |
210 | static int ext4_ioctl_setflags(struct inode *inode, |
211 | unsigned int flags) | |
212 | { | |
213 | struct ext4_inode_info *ei = EXT4_I(inode); | |
214 | handle_t *handle = NULL; | |
fdde368e | 215 | int err = -EPERM, migrate = 0; |
9b7365fc LX |
216 | struct ext4_iloc iloc; |
217 | unsigned int oldflags, mask, i; | |
218 | unsigned int jflag; | |
219 | ||
220 | /* Is it quota file? Do not allow user to mess with it */ | |
221 | if (IS_NOQUOTA(inode)) | |
222 | goto flags_out; | |
223 | ||
224 | oldflags = ei->i_flags; | |
225 | ||
226 | /* The JOURNAL_DATA flag is modifiable only by root */ | |
227 | jflag = flags & EXT4_JOURNAL_DATA_FL; | |
228 | ||
229 | /* | |
230 | * The IMMUTABLE and APPEND_ONLY flags can only be changed by | |
231 | * the relevant capability. | |
232 | * | |
233 | * This test looks nicer. Thanks to Pauline Middelink | |
234 | */ | |
235 | if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) { | |
236 | if (!capable(CAP_LINUX_IMMUTABLE)) | |
237 | goto flags_out; | |
238 | } | |
239 | ||
240 | /* | |
241 | * The JOURNAL_DATA flag can only be changed by | |
242 | * the relevant capability. | |
243 | */ | |
244 | if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { | |
245 | if (!capable(CAP_SYS_RESOURCE)) | |
246 | goto flags_out; | |
247 | } | |
248 | if ((flags ^ oldflags) & EXT4_EXTENTS_FL) | |
249 | migrate = 1; | |
250 | ||
251 | if (flags & EXT4_EOFBLOCKS_FL) { | |
252 | /* we don't support adding EOFBLOCKS flag */ | |
253 | if (!(oldflags & EXT4_EOFBLOCKS_FL)) { | |
254 | err = -EOPNOTSUPP; | |
255 | goto flags_out; | |
256 | } | |
2c98eb5e TT |
257 | } else if (oldflags & EXT4_EOFBLOCKS_FL) { |
258 | err = ext4_truncate(inode); | |
259 | if (err) | |
260 | goto flags_out; | |
261 | } | |
9b7365fc LX |
262 | |
263 | handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); | |
264 | if (IS_ERR(handle)) { | |
265 | err = PTR_ERR(handle); | |
266 | goto flags_out; | |
267 | } | |
268 | if (IS_SYNC(inode)) | |
269 | ext4_handle_sync(handle); | |
270 | err = ext4_reserve_inode_write(handle, inode, &iloc); | |
271 | if (err) | |
272 | goto flags_err; | |
273 | ||
274 | for (i = 0, mask = 1; i < 32; i++, mask <<= 1) { | |
275 | if (!(mask & EXT4_FL_USER_MODIFIABLE)) | |
276 | continue; | |
f8011d93 JK |
277 | /* These flags get special treatment later */ |
278 | if (mask == EXT4_JOURNAL_DATA_FL || mask == EXT4_EXTENTS_FL) | |
279 | continue; | |
9b7365fc LX |
280 | if (mask & flags) |
281 | ext4_set_inode_flag(inode, i); | |
282 | else | |
283 | ext4_clear_inode_flag(inode, i); | |
284 | } | |
285 | ||
286 | ext4_set_inode_flags(inode); | |
eeca7ea1 | 287 | inode->i_ctime = current_time(inode); |
9b7365fc LX |
288 | |
289 | err = ext4_mark_iloc_dirty(handle, inode, &iloc); | |
290 | flags_err: | |
291 | ext4_journal_stop(handle); | |
292 | if (err) | |
293 | goto flags_out; | |
294 | ||
295 | if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) | |
296 | err = ext4_change_inode_journal_flag(inode, jflag); | |
297 | if (err) | |
298 | goto flags_out; | |
299 | if (migrate) { | |
300 | if (flags & EXT4_EXTENTS_FL) | |
301 | err = ext4_ext_migrate(inode); | |
302 | else | |
303 | err = ext4_ind_migrate(inode); | |
304 | } | |
305 | ||
306 | flags_out: | |
307 | return err; | |
308 | } | |
309 | ||
310 | #ifdef CONFIG_QUOTA | |
311 | static int ext4_ioctl_setproject(struct file *filp, __u32 projid) | |
312 | { | |
313 | struct inode *inode = file_inode(filp); | |
314 | struct super_block *sb = inode->i_sb; | |
315 | struct ext4_inode_info *ei = EXT4_I(inode); | |
316 | int err, rc; | |
317 | handle_t *handle; | |
318 | kprojid_t kprojid; | |
319 | struct ext4_iloc iloc; | |
320 | struct ext4_inode *raw_inode; | |
079788d0 | 321 | struct dquot *transfer_to[MAXQUOTAS] = { }; |
9b7365fc | 322 | |
0b7b7779 | 323 | if (!ext4_has_feature_project(sb)) { |
9b7365fc LX |
324 | if (projid != EXT4_DEF_PROJID) |
325 | return -EOPNOTSUPP; | |
326 | else | |
327 | return 0; | |
328 | } | |
329 | ||
330 | if (EXT4_INODE_SIZE(sb) <= EXT4_GOOD_OLD_INODE_SIZE) | |
331 | return -EOPNOTSUPP; | |
332 | ||
333 | kprojid = make_kprojid(&init_user_ns, (projid_t)projid); | |
334 | ||
335 | if (projid_eq(kprojid, EXT4_I(inode)->i_projid)) | |
336 | return 0; | |
337 | ||
338 | err = mnt_want_write_file(filp); | |
339 | if (err) | |
340 | return err; | |
341 | ||
342 | err = -EPERM; | |
5955102c | 343 | inode_lock(inode); |
9b7365fc LX |
344 | /* Is it quota file? Do not allow user to mess with it */ |
345 | if (IS_NOQUOTA(inode)) | |
346 | goto out_unlock; | |
347 | ||
348 | err = ext4_get_inode_loc(inode, &iloc); | |
349 | if (err) | |
350 | goto out_unlock; | |
351 | ||
352 | raw_inode = ext4_raw_inode(&iloc); | |
353 | if (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) { | |
354 | err = -EOVERFLOW; | |
355 | brelse(iloc.bh); | |
356 | goto out_unlock; | |
357 | } | |
358 | brelse(iloc.bh); | |
359 | ||
360 | dquot_initialize(inode); | |
361 | ||
362 | handle = ext4_journal_start(inode, EXT4_HT_QUOTA, | |
363 | EXT4_QUOTA_INIT_BLOCKS(sb) + | |
364 | EXT4_QUOTA_DEL_BLOCKS(sb) + 3); | |
365 | if (IS_ERR(handle)) { | |
366 | err = PTR_ERR(handle); | |
367 | goto out_unlock; | |
368 | } | |
369 | ||
370 | err = ext4_reserve_inode_write(handle, inode, &iloc); | |
371 | if (err) | |
372 | goto out_stop; | |
373 | ||
079788d0 WS |
374 | transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); |
375 | if (!IS_ERR(transfer_to[PRJQUOTA])) { | |
376 | err = __dquot_transfer(inode, transfer_to); | |
377 | dqput(transfer_to[PRJQUOTA]); | |
378 | if (err) | |
379 | goto out_dirty; | |
9b7365fc | 380 | } |
079788d0 | 381 | |
9b7365fc | 382 | EXT4_I(inode)->i_projid = kprojid; |
eeca7ea1 | 383 | inode->i_ctime = current_time(inode); |
9b7365fc LX |
384 | out_dirty: |
385 | rc = ext4_mark_iloc_dirty(handle, inode, &iloc); | |
386 | if (!err) | |
387 | err = rc; | |
388 | out_stop: | |
389 | ext4_journal_stop(handle); | |
390 | out_unlock: | |
5955102c | 391 | inode_unlock(inode); |
9b7365fc LX |
392 | mnt_drop_write_file(filp); |
393 | return err; | |
394 | } | |
395 | #else | |
396 | static int ext4_ioctl_setproject(struct file *filp, __u32 projid) | |
397 | { | |
398 | if (projid != EXT4_DEF_PROJID) | |
399 | return -EOPNOTSUPP; | |
400 | return 0; | |
401 | } | |
402 | #endif | |
403 | ||
404 | /* Transfer internal flags to xflags */ | |
405 | static inline __u32 ext4_iflags_to_xflags(unsigned long iflags) | |
406 | { | |
407 | __u32 xflags = 0; | |
408 | ||
409 | if (iflags & EXT4_SYNC_FL) | |
410 | xflags |= FS_XFLAG_SYNC; | |
411 | if (iflags & EXT4_IMMUTABLE_FL) | |
412 | xflags |= FS_XFLAG_IMMUTABLE; | |
413 | if (iflags & EXT4_APPEND_FL) | |
414 | xflags |= FS_XFLAG_APPEND; | |
415 | if (iflags & EXT4_NODUMP_FL) | |
416 | xflags |= FS_XFLAG_NODUMP; | |
417 | if (iflags & EXT4_NOATIME_FL) | |
418 | xflags |= FS_XFLAG_NOATIME; | |
419 | if (iflags & EXT4_PROJINHERIT_FL) | |
420 | xflags |= FS_XFLAG_PROJINHERIT; | |
421 | return xflags; | |
422 | } | |
423 | ||
d14e7683 JK |
424 | #define EXT4_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \ |
425 | FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \ | |
426 | FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT) | |
427 | ||
9b7365fc LX |
428 | /* Transfer xflags flags to internal */ |
429 | static inline unsigned long ext4_xflags_to_iflags(__u32 xflags) | |
430 | { | |
431 | unsigned long iflags = 0; | |
432 | ||
433 | if (xflags & FS_XFLAG_SYNC) | |
434 | iflags |= EXT4_SYNC_FL; | |
435 | if (xflags & FS_XFLAG_IMMUTABLE) | |
436 | iflags |= EXT4_IMMUTABLE_FL; | |
437 | if (xflags & FS_XFLAG_APPEND) | |
438 | iflags |= EXT4_APPEND_FL; | |
439 | if (xflags & FS_XFLAG_NODUMP) | |
440 | iflags |= EXT4_NODUMP_FL; | |
441 | if (xflags & FS_XFLAG_NOATIME) | |
442 | iflags |= EXT4_NOATIME_FL; | |
443 | if (xflags & FS_XFLAG_PROJINHERIT) | |
444 | iflags |= EXT4_PROJINHERIT_FL; | |
445 | ||
446 | return iflags; | |
447 | } | |
448 | ||
1a20a630 | 449 | static int ext4_shutdown(struct super_block *sb, unsigned long arg) |
783d9485 TT |
450 | { |
451 | struct ext4_sb_info *sbi = EXT4_SB(sb); | |
452 | __u32 flags; | |
453 | ||
454 | if (!capable(CAP_SYS_ADMIN)) | |
455 | return -EPERM; | |
456 | ||
457 | if (get_user(flags, (__u32 __user *)arg)) | |
458 | return -EFAULT; | |
459 | ||
460 | if (flags > EXT4_GOING_FLAGS_NOLOGFLUSH) | |
461 | return -EINVAL; | |
462 | ||
463 | if (ext4_forced_shutdown(sbi)) | |
464 | return 0; | |
465 | ||
466 | ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags); | |
467 | ||
468 | switch (flags) { | |
469 | case EXT4_GOING_FLAGS_DEFAULT: | |
470 | freeze_bdev(sb->s_bdev); | |
471 | set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); | |
472 | thaw_bdev(sb->s_bdev, sb); | |
473 | break; | |
474 | case EXT4_GOING_FLAGS_LOGFLUSH: | |
475 | set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); | |
476 | if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { | |
477 | (void) ext4_force_commit(sb); | |
478 | jbd2_journal_abort(sbi->s_journal, 0); | |
479 | } | |
480 | break; | |
481 | case EXT4_GOING_FLAGS_NOLOGFLUSH: | |
482 | set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); | |
483 | if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { | |
484 | msleep(100); | |
485 | jbd2_journal_abort(sbi->s_journal, 0); | |
486 | } | |
487 | break; | |
488 | default: | |
489 | return -EINVAL; | |
490 | } | |
491 | clear_opt(sb, DISCARD); | |
492 | return 0; | |
493 | } | |
494 | ||
0c9ec4be DW |
495 | struct getfsmap_info { |
496 | struct super_block *gi_sb; | |
497 | struct fsmap_head __user *gi_data; | |
498 | unsigned int gi_idx; | |
499 | __u32 gi_last_flags; | |
500 | }; | |
501 | ||
502 | static int ext4_getfsmap_format(struct ext4_fsmap *xfm, void *priv) | |
503 | { | |
504 | struct getfsmap_info *info = priv; | |
505 | struct fsmap fm; | |
506 | ||
507 | trace_ext4_getfsmap_mapping(info->gi_sb, xfm); | |
508 | ||
509 | info->gi_last_flags = xfm->fmr_flags; | |
510 | ext4_fsmap_from_internal(info->gi_sb, &fm, xfm); | |
511 | if (copy_to_user(&info->gi_data->fmh_recs[info->gi_idx++], &fm, | |
512 | sizeof(struct fsmap))) | |
513 | return -EFAULT; | |
514 | ||
515 | return 0; | |
516 | } | |
517 | ||
518 | static int ext4_ioc_getfsmap(struct super_block *sb, | |
519 | struct fsmap_head __user *arg) | |
520 | { | |
521 | struct getfsmap_info info = {0}; | |
522 | struct ext4_fsmap_head xhead = {0}; | |
523 | struct fsmap_head head; | |
524 | bool aborted = false; | |
525 | int error; | |
526 | ||
527 | if (copy_from_user(&head, arg, sizeof(struct fsmap_head))) | |
528 | return -EFAULT; | |
529 | if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) || | |
530 | memchr_inv(head.fmh_keys[0].fmr_reserved, 0, | |
531 | sizeof(head.fmh_keys[0].fmr_reserved)) || | |
532 | memchr_inv(head.fmh_keys[1].fmr_reserved, 0, | |
533 | sizeof(head.fmh_keys[1].fmr_reserved))) | |
534 | return -EINVAL; | |
535 | /* | |
536 | * ext4 doesn't report file extents at all, so the only valid | |
537 | * file offsets are the magic ones (all zeroes or all ones). | |
538 | */ | |
539 | if (head.fmh_keys[0].fmr_offset || | |
540 | (head.fmh_keys[1].fmr_offset != 0 && | |
541 | head.fmh_keys[1].fmr_offset != -1ULL)) | |
542 | return -EINVAL; | |
543 | ||
544 | xhead.fmh_iflags = head.fmh_iflags; | |
545 | xhead.fmh_count = head.fmh_count; | |
546 | ext4_fsmap_to_internal(sb, &xhead.fmh_keys[0], &head.fmh_keys[0]); | |
547 | ext4_fsmap_to_internal(sb, &xhead.fmh_keys[1], &head.fmh_keys[1]); | |
548 | ||
549 | trace_ext4_getfsmap_low_key(sb, &xhead.fmh_keys[0]); | |
550 | trace_ext4_getfsmap_high_key(sb, &xhead.fmh_keys[1]); | |
551 | ||
552 | info.gi_sb = sb; | |
553 | info.gi_data = arg; | |
554 | error = ext4_getfsmap(sb, &xhead, ext4_getfsmap_format, &info); | |
555 | if (error == EXT4_QUERY_RANGE_ABORT) { | |
556 | error = 0; | |
557 | aborted = true; | |
558 | } else if (error) | |
559 | return error; | |
560 | ||
561 | /* If we didn't abort, set the "last" flag in the last fmx */ | |
562 | if (!aborted && info.gi_idx) { | |
563 | info.gi_last_flags |= FMR_OF_LAST; | |
564 | if (copy_to_user(&info.gi_data->fmh_recs[info.gi_idx - 1].fmr_flags, | |
565 | &info.gi_last_flags, | |
566 | sizeof(info.gi_last_flags))) | |
567 | return -EFAULT; | |
568 | } | |
569 | ||
570 | /* copy back header */ | |
571 | head.fmh_entries = xhead.fmh_entries; | |
572 | head.fmh_oflags = xhead.fmh_oflags; | |
573 | if (copy_to_user(arg, &head, sizeof(struct fsmap_head))) | |
574 | return -EFAULT; | |
575 | ||
576 | return 0; | |
577 | } | |
578 | ||
5cdd7b2d | 579 | long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
ac27a0ec | 580 | { |
496ad9aa | 581 | struct inode *inode = file_inode(filp); |
bab08ab9 | 582 | struct super_block *sb = inode->i_sb; |
617ba13b | 583 | struct ext4_inode_info *ei = EXT4_I(inode); |
ac27a0ec | 584 | unsigned int flags; |
ac27a0ec | 585 | |
af5bc92d | 586 | ext4_debug("cmd = %u, arg = %lu\n", cmd, arg); |
ac27a0ec DK |
587 | |
588 | switch (cmd) { | |
0c9ec4be DW |
589 | case FS_IOC_GETFSMAP: |
590 | return ext4_ioc_getfsmap(sb, (void __user *)arg); | |
617ba13b MC |
591 | case EXT4_IOC_GETFLAGS: |
592 | flags = ei->i_flags & EXT4_FL_USER_VISIBLE; | |
ac27a0ec | 593 | return put_user(flags, (int __user *) arg); |
617ba13b | 594 | case EXT4_IOC_SETFLAGS: { |
9b7365fc | 595 | int err; |
ac27a0ec | 596 | |
2e149670 | 597 | if (!inode_owner_or_capable(inode)) |
ac27a0ec DK |
598 | return -EACCES; |
599 | ||
600 | if (get_user(flags, (int __user *) arg)) | |
601 | return -EFAULT; | |
602 | ||
d14e7683 JK |
603 | if (flags & ~EXT4_FL_USER_VISIBLE) |
604 | return -EOPNOTSUPP; | |
605 | /* | |
606 | * chattr(1) grabs flags via GETFLAGS, modifies the result and | |
607 | * passes that to SETFLAGS. So we cannot easily make SETFLAGS | |
608 | * more restrictive than just silently masking off visible but | |
609 | * not settable flags as we always did. | |
610 | */ | |
611 | flags &= EXT4_FL_USER_MODIFIABLE; | |
612 | if (ext4_mask_flags(inode->i_mode, flags) != flags) | |
613 | return -EOPNOTSUPP; | |
614 | ||
a561be71 | 615 | err = mnt_want_write_file(filp); |
42a74f20 DH |
616 | if (err) |
617 | return err; | |
618 | ||
5955102c | 619 | inode_lock(inode); |
9b7365fc | 620 | err = ext4_ioctl_setflags(inode, flags); |
5955102c | 621 | inode_unlock(inode); |
2a79f17e | 622 | mnt_drop_write_file(filp); |
ac27a0ec DK |
623 | return err; |
624 | } | |
617ba13b MC |
625 | case EXT4_IOC_GETVERSION: |
626 | case EXT4_IOC_GETVERSION_OLD: | |
ac27a0ec | 627 | return put_user(inode->i_generation, (int __user *) arg); |
617ba13b MC |
628 | case EXT4_IOC_SETVERSION: |
629 | case EXT4_IOC_SETVERSION_OLD: { | |
ac27a0ec | 630 | handle_t *handle; |
617ba13b | 631 | struct ext4_iloc iloc; |
ac27a0ec DK |
632 | __u32 generation; |
633 | int err; | |
634 | ||
2e149670 | 635 | if (!inode_owner_or_capable(inode)) |
ac27a0ec | 636 | return -EPERM; |
42a74f20 | 637 | |
9aa5d32b | 638 | if (ext4_has_metadata_csum(inode->i_sb)) { |
814525f4 DW |
639 | ext4_warning(sb, "Setting inode version is not " |
640 | "supported with metadata_csum enabled."); | |
641 | return -ENOTTY; | |
642 | } | |
643 | ||
a561be71 | 644 | err = mnt_want_write_file(filp); |
42a74f20 DH |
645 | if (err) |
646 | return err; | |
647 | if (get_user(generation, (int __user *) arg)) { | |
648 | err = -EFAULT; | |
649 | goto setversion_out; | |
650 | } | |
ac27a0ec | 651 | |
5955102c | 652 | inode_lock(inode); |
9924a92a | 653 | handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); |
42a74f20 DH |
654 | if (IS_ERR(handle)) { |
655 | err = PTR_ERR(handle); | |
6c2155b9 | 656 | goto unlock_out; |
42a74f20 | 657 | } |
617ba13b | 658 | err = ext4_reserve_inode_write(handle, inode, &iloc); |
ac27a0ec | 659 | if (err == 0) { |
eeca7ea1 | 660 | inode->i_ctime = current_time(inode); |
ac27a0ec | 661 | inode->i_generation = generation; |
617ba13b | 662 | err = ext4_mark_iloc_dirty(handle, inode, &iloc); |
ac27a0ec | 663 | } |
617ba13b | 664 | ext4_journal_stop(handle); |
6c2155b9 DH |
665 | |
666 | unlock_out: | |
5955102c | 667 | inode_unlock(inode); |
42a74f20 | 668 | setversion_out: |
2a79f17e | 669 | mnt_drop_write_file(filp); |
ac27a0ec DK |
670 | return err; |
671 | } | |
617ba13b MC |
672 | case EXT4_IOC_GROUP_EXTEND: { |
673 | ext4_fsblk_t n_blocks_count; | |
ac046f1d | 674 | int err, err2=0; |
ac27a0ec | 675 | |
8f82f840 YY |
676 | err = ext4_resize_begin(sb); |
677 | if (err) | |
678 | return err; | |
ac27a0ec | 679 | |
014a1770 DH |
680 | if (get_user(n_blocks_count, (__u32 __user *)arg)) { |
681 | err = -EFAULT; | |
682 | goto group_extend_out; | |
683 | } | |
ac27a0ec | 684 | |
e2b911c5 | 685 | if (ext4_has_feature_bigalloc(sb)) { |
bab08ab9 TT |
686 | ext4_msg(sb, KERN_ERR, |
687 | "Online resizing not supported with bigalloc"); | |
014a1770 DH |
688 | err = -EOPNOTSUPP; |
689 | goto group_extend_out; | |
bab08ab9 TT |
690 | } |
691 | ||
a561be71 | 692 | err = mnt_want_write_file(filp); |
42a74f20 | 693 | if (err) |
014a1770 | 694 | goto group_extend_out; |
42a74f20 | 695 | |
617ba13b | 696 | err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count); |
ac046f1d PT |
697 | if (EXT4_SB(sb)->s_journal) { |
698 | jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); | |
699 | err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); | |
700 | jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); | |
701 | } | |
7ffe1ea8 HK |
702 | if (err == 0) |
703 | err = err2; | |
2a79f17e | 704 | mnt_drop_write_file(filp); |
014a1770 | 705 | group_extend_out: |
8f82f840 | 706 | ext4_resize_end(sb); |
ac27a0ec DK |
707 | return err; |
708 | } | |
748de673 AF |
709 | |
710 | case EXT4_IOC_MOVE_EXT: { | |
711 | struct move_extent me; | |
2903ff01 AV |
712 | struct fd donor; |
713 | int err; | |
748de673 | 714 | |
4a58579b AF |
715 | if (!(filp->f_mode & FMODE_READ) || |
716 | !(filp->f_mode & FMODE_WRITE)) | |
717 | return -EBADF; | |
718 | ||
748de673 AF |
719 | if (copy_from_user(&me, |
720 | (struct move_extent __user *)arg, sizeof(me))) | |
721 | return -EFAULT; | |
4a58579b | 722 | me.moved_len = 0; |
748de673 | 723 | |
2903ff01 AV |
724 | donor = fdget(me.donor_fd); |
725 | if (!donor.file) | |
748de673 AF |
726 | return -EBADF; |
727 | ||
2903ff01 | 728 | if (!(donor.file->f_mode & FMODE_WRITE)) { |
4a58579b AF |
729 | err = -EBADF; |
730 | goto mext_out; | |
748de673 AF |
731 | } |
732 | ||
e2b911c5 | 733 | if (ext4_has_feature_bigalloc(sb)) { |
bab08ab9 TT |
734 | ext4_msg(sb, KERN_ERR, |
735 | "Online defrag not supported with bigalloc"); | |
399c9b86 AV |
736 | err = -EOPNOTSUPP; |
737 | goto mext_out; | |
73f34a5e RZ |
738 | } else if (IS_DAX(inode)) { |
739 | ext4_msg(sb, KERN_ERR, | |
740 | "Online defrag not supported with DAX"); | |
741 | err = -EOPNOTSUPP; | |
742 | goto mext_out; | |
bab08ab9 TT |
743 | } |
744 | ||
a561be71 | 745 | err = mnt_want_write_file(filp); |
4a58579b AF |
746 | if (err) |
747 | goto mext_out; | |
748 | ||
2903ff01 | 749 | err = ext4_move_extents(filp, donor.file, me.orig_start, |
748de673 | 750 | me.donor_start, me.len, &me.moved_len); |
2a79f17e | 751 | mnt_drop_write_file(filp); |
748de673 | 752 | |
60e6679e | 753 | if (copy_to_user((struct move_extent __user *)arg, |
c437b273 | 754 | &me, sizeof(me))) |
4a58579b AF |
755 | err = -EFAULT; |
756 | mext_out: | |
2903ff01 | 757 | fdput(donor); |
748de673 AF |
758 | return err; |
759 | } | |
760 | ||
617ba13b MC |
761 | case EXT4_IOC_GROUP_ADD: { |
762 | struct ext4_new_group_data input; | |
ac046f1d | 763 | int err, err2=0; |
ac27a0ec | 764 | |
8f82f840 YY |
765 | err = ext4_resize_begin(sb); |
766 | if (err) | |
767 | return err; | |
ac27a0ec | 768 | |
617ba13b | 769 | if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg, |
014a1770 DH |
770 | sizeof(input))) { |
771 | err = -EFAULT; | |
772 | goto group_add_out; | |
773 | } | |
ac27a0ec | 774 | |
e2b911c5 | 775 | if (ext4_has_feature_bigalloc(sb)) { |
bab08ab9 TT |
776 | ext4_msg(sb, KERN_ERR, |
777 | "Online resizing not supported with bigalloc"); | |
014a1770 DH |
778 | err = -EOPNOTSUPP; |
779 | goto group_add_out; | |
bab08ab9 TT |
780 | } |
781 | ||
a561be71 | 782 | err = mnt_want_write_file(filp); |
42a74f20 | 783 | if (err) |
014a1770 | 784 | goto group_add_out; |
42a74f20 | 785 | |
617ba13b | 786 | err = ext4_group_add(sb, &input); |
ac046f1d PT |
787 | if (EXT4_SB(sb)->s_journal) { |
788 | jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); | |
789 | err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); | |
790 | jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); | |
791 | } | |
7ffe1ea8 HK |
792 | if (err == 0) |
793 | err = err2; | |
2a79f17e | 794 | mnt_drop_write_file(filp); |
7f511862 TT |
795 | if (!err && ext4_has_group_desc_csum(sb) && |
796 | test_opt(sb, INIT_INODE_TABLE)) | |
797 | err = ext4_register_li_request(sb, input.group); | |
014a1770 | 798 | group_add_out: |
8f82f840 | 799 | ext4_resize_end(sb); |
ac27a0ec DK |
800 | return err; |
801 | } | |
802 | ||
c14c6fd5 | 803 | case EXT4_IOC_MIGRATE: |
2a43a878 AK |
804 | { |
805 | int err; | |
2e149670 | 806 | if (!inode_owner_or_capable(inode)) |
2a43a878 AK |
807 | return -EACCES; |
808 | ||
a561be71 | 809 | err = mnt_want_write_file(filp); |
2a43a878 AK |
810 | if (err) |
811 | return err; | |
812 | /* | |
813 | * inode_mutex prevent write and truncate on the file. | |
814 | * Read still goes through. We take i_data_sem in | |
815 | * ext4_ext_swap_inode_data before we switch the | |
816 | * inode format to prevent read. | |
817 | */ | |
5955102c | 818 | inode_lock((inode)); |
2a43a878 | 819 | err = ext4_ext_migrate(inode); |
5955102c | 820 | inode_unlock((inode)); |
2a79f17e | 821 | mnt_drop_write_file(filp); |
2a43a878 AK |
822 | return err; |
823 | } | |
c14c6fd5 | 824 | |
ccd2506b TT |
825 | case EXT4_IOC_ALLOC_DA_BLKS: |
826 | { | |
827 | int err; | |
2e149670 | 828 | if (!inode_owner_or_capable(inode)) |
ccd2506b TT |
829 | return -EACCES; |
830 | ||
a561be71 | 831 | err = mnt_want_write_file(filp); |
ccd2506b TT |
832 | if (err) |
833 | return err; | |
834 | err = ext4_alloc_da_blocks(inode); | |
2a79f17e | 835 | mnt_drop_write_file(filp); |
ccd2506b TT |
836 | return err; |
837 | } | |
838 | ||
393d1d1d | 839 | case EXT4_IOC_SWAP_BOOT: |
3e67cfad DM |
840 | { |
841 | int err; | |
393d1d1d DTB |
842 | if (!(filp->f_mode & FMODE_WRITE)) |
843 | return -EBADF; | |
3e67cfad DM |
844 | err = mnt_want_write_file(filp); |
845 | if (err) | |
846 | return err; | |
847 | err = swap_inode_boot_loader(sb, inode); | |
848 | mnt_drop_write_file(filp); | |
849 | return err; | |
850 | } | |
393d1d1d | 851 | |
19c5246d YY |
852 | case EXT4_IOC_RESIZE_FS: { |
853 | ext4_fsblk_t n_blocks_count; | |
19c5246d | 854 | int err = 0, err2 = 0; |
7f511862 | 855 | ext4_group_t o_group = EXT4_SB(sb)->s_groups_count; |
19c5246d | 856 | |
e2b911c5 | 857 | if (ext4_has_feature_bigalloc(sb)) { |
19c5246d YY |
858 | ext4_msg(sb, KERN_ERR, |
859 | "Online resizing not (yet) supported with bigalloc"); | |
860 | return -EOPNOTSUPP; | |
861 | } | |
862 | ||
19c5246d YY |
863 | if (copy_from_user(&n_blocks_count, (__u64 __user *)arg, |
864 | sizeof(__u64))) { | |
865 | return -EFAULT; | |
866 | } | |
867 | ||
19c5246d YY |
868 | err = ext4_resize_begin(sb); |
869 | if (err) | |
870 | return err; | |
871 | ||
8cae6f71 | 872 | err = mnt_want_write_file(filp); |
19c5246d YY |
873 | if (err) |
874 | goto resizefs_out; | |
875 | ||
876 | err = ext4_resize_fs(sb, n_blocks_count); | |
877 | if (EXT4_SB(sb)->s_journal) { | |
878 | jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); | |
879 | err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); | |
880 | jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); | |
881 | } | |
882 | if (err == 0) | |
883 | err = err2; | |
8cae6f71 | 884 | mnt_drop_write_file(filp); |
7f511862 TT |
885 | if (!err && (o_group > EXT4_SB(sb)->s_groups_count) && |
886 | ext4_has_group_desc_csum(sb) && | |
887 | test_opt(sb, INIT_INODE_TABLE)) | |
888 | err = ext4_register_li_request(sb, o_group); | |
889 | ||
19c5246d YY |
890 | resizefs_out: |
891 | ext4_resize_end(sb); | |
892 | return err; | |
893 | } | |
894 | ||
e681c047 LC |
895 | case FITRIM: |
896 | { | |
41431792 | 897 | struct request_queue *q = bdev_get_queue(sb->s_bdev); |
e681c047 LC |
898 | struct fstrim_range range; |
899 | int ret = 0; | |
900 | ||
901 | if (!capable(CAP_SYS_ADMIN)) | |
902 | return -EPERM; | |
903 | ||
41431792 LC |
904 | if (!blk_queue_discard(q)) |
905 | return -EOPNOTSUPP; | |
906 | ||
e6705f7c | 907 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
e681c047 LC |
908 | sizeof(range))) |
909 | return -EFAULT; | |
910 | ||
5c2ed62f LC |
911 | range.minlen = max((unsigned int)range.minlen, |
912 | q->limits.discard_granularity); | |
e681c047 LC |
913 | ret = ext4_trim_fs(sb, &range); |
914 | if (ret < 0) | |
915 | return ret; | |
916 | ||
e6705f7c | 917 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
e681c047 LC |
918 | sizeof(range))) |
919 | return -EFAULT; | |
920 | ||
921 | return 0; | |
922 | } | |
7869a4a6 TT |
923 | case EXT4_IOC_PRECACHE_EXTENTS: |
924 | return ext4_ext_precache(inode); | |
9bd8212f | 925 | |
db717d8e | 926 | case EXT4_IOC_SET_ENCRYPTION_POLICY: |
9a200d07 RW |
927 | if (!ext4_has_feature_encrypt(sb)) |
928 | return -EOPNOTSUPP; | |
db717d8e | 929 | return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); |
9a200d07 | 930 | |
9bd8212f | 931 | case EXT4_IOC_GET_ENCRYPTION_PWSALT: { |
ba679017 | 932 | #ifdef CONFIG_EXT4_FS_ENCRYPTION |
9bd8212f MH |
933 | int err, err2; |
934 | struct ext4_sb_info *sbi = EXT4_SB(sb); | |
935 | handle_t *handle; | |
936 | ||
35997d1c | 937 | if (!ext4_has_feature_encrypt(sb)) |
9bd8212f MH |
938 | return -EOPNOTSUPP; |
939 | if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) { | |
940 | err = mnt_want_write_file(filp); | |
941 | if (err) | |
942 | return err; | |
943 | handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1); | |
944 | if (IS_ERR(handle)) { | |
945 | err = PTR_ERR(handle); | |
946 | goto pwsalt_err_exit; | |
947 | } | |
948 | err = ext4_journal_get_write_access(handle, sbi->s_sbh); | |
949 | if (err) | |
950 | goto pwsalt_err_journal; | |
951 | generate_random_uuid(sbi->s_es->s_encrypt_pw_salt); | |
952 | err = ext4_handle_dirty_metadata(handle, NULL, | |
953 | sbi->s_sbh); | |
954 | pwsalt_err_journal: | |
955 | err2 = ext4_journal_stop(handle); | |
956 | if (err2 && !err) | |
957 | err = err2; | |
958 | pwsalt_err_exit: | |
959 | mnt_drop_write_file(filp); | |
960 | if (err) | |
961 | return err; | |
962 | } | |
b4ab9e29 FF |
963 | if (copy_to_user((void __user *) arg, |
964 | sbi->s_es->s_encrypt_pw_salt, 16)) | |
9bd8212f MH |
965 | return -EFAULT; |
966 | return 0; | |
ba679017 EB |
967 | #else |
968 | return -EOPNOTSUPP; | |
969 | #endif | |
9bd8212f | 970 | } |
db717d8e EB |
971 | case EXT4_IOC_GET_ENCRYPTION_POLICY: |
972 | return fscrypt_ioctl_get_policy(filp, (void __user *)arg); | |
9bd8212f | 973 | |
9b7365fc LX |
974 | case EXT4_IOC_FSGETXATTR: |
975 | { | |
976 | struct fsxattr fa; | |
977 | ||
978 | memset(&fa, 0, sizeof(struct fsxattr)); | |
9b7365fc LX |
979 | fa.fsx_xflags = ext4_iflags_to_xflags(ei->i_flags & EXT4_FL_USER_VISIBLE); |
980 | ||
0b7b7779 | 981 | if (ext4_has_feature_project(inode->i_sb)) { |
9b7365fc LX |
982 | fa.fsx_projid = (__u32)from_kprojid(&init_user_ns, |
983 | EXT4_I(inode)->i_projid); | |
984 | } | |
985 | ||
986 | if (copy_to_user((struct fsxattr __user *)arg, | |
987 | &fa, sizeof(fa))) | |
988 | return -EFAULT; | |
989 | return 0; | |
990 | } | |
991 | case EXT4_IOC_FSSETXATTR: | |
992 | { | |
993 | struct fsxattr fa; | |
994 | int err; | |
995 | ||
996 | if (copy_from_user(&fa, (struct fsxattr __user *)arg, | |
997 | sizeof(fa))) | |
998 | return -EFAULT; | |
999 | ||
1000 | /* Make sure caller has proper permission */ | |
1001 | if (!inode_owner_or_capable(inode)) | |
1002 | return -EACCES; | |
1003 | ||
d14e7683 JK |
1004 | if (fa.fsx_xflags & ~EXT4_SUPPORTED_FS_XFLAGS) |
1005 | return -EOPNOTSUPP; | |
1006 | ||
1007 | flags = ext4_xflags_to_iflags(fa.fsx_xflags); | |
1008 | if (ext4_mask_flags(inode->i_mode, flags) != flags) | |
1009 | return -EOPNOTSUPP; | |
1010 | ||
9b7365fc LX |
1011 | err = mnt_want_write_file(filp); |
1012 | if (err) | |
1013 | return err; | |
1014 | ||
5955102c | 1015 | inode_lock(inode); |
9b7365fc LX |
1016 | flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) | |
1017 | (flags & EXT4_FL_XFLAG_VISIBLE); | |
1018 | err = ext4_ioctl_setflags(inode, flags); | |
5955102c | 1019 | inode_unlock(inode); |
9b7365fc LX |
1020 | mnt_drop_write_file(filp); |
1021 | if (err) | |
1022 | return err; | |
1023 | ||
1024 | err = ext4_ioctl_setproject(filp, fa.fsx_projid); | |
1025 | if (err) | |
1026 | return err; | |
1027 | ||
1028 | return 0; | |
1029 | } | |
e9be2ac7 TT |
1030 | case EXT4_IOC_SHUTDOWN: |
1031 | return ext4_shutdown(sb, arg); | |
ac27a0ec DK |
1032 | default: |
1033 | return -ENOTTY; | |
1034 | } | |
1035 | } | |
1036 | ||
1037 | #ifdef CONFIG_COMPAT | |
617ba13b | 1038 | long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
ac27a0ec | 1039 | { |
ac27a0ec DK |
1040 | /* These are just misnamed, they actually get/put from/to user an int */ |
1041 | switch (cmd) { | |
617ba13b MC |
1042 | case EXT4_IOC32_GETFLAGS: |
1043 | cmd = EXT4_IOC_GETFLAGS; | |
ac27a0ec | 1044 | break; |
617ba13b MC |
1045 | case EXT4_IOC32_SETFLAGS: |
1046 | cmd = EXT4_IOC_SETFLAGS; | |
ac27a0ec | 1047 | break; |
617ba13b MC |
1048 | case EXT4_IOC32_GETVERSION: |
1049 | cmd = EXT4_IOC_GETVERSION; | |
ac27a0ec | 1050 | break; |
617ba13b MC |
1051 | case EXT4_IOC32_SETVERSION: |
1052 | cmd = EXT4_IOC_SETVERSION; | |
ac27a0ec | 1053 | break; |
617ba13b MC |
1054 | case EXT4_IOC32_GROUP_EXTEND: |
1055 | cmd = EXT4_IOC_GROUP_EXTEND; | |
ac27a0ec | 1056 | break; |
617ba13b MC |
1057 | case EXT4_IOC32_GETVERSION_OLD: |
1058 | cmd = EXT4_IOC_GETVERSION_OLD; | |
ac27a0ec | 1059 | break; |
617ba13b MC |
1060 | case EXT4_IOC32_SETVERSION_OLD: |
1061 | cmd = EXT4_IOC_SETVERSION_OLD; | |
ac27a0ec | 1062 | break; |
617ba13b MC |
1063 | case EXT4_IOC32_GETRSVSZ: |
1064 | cmd = EXT4_IOC_GETRSVSZ; | |
ac27a0ec | 1065 | break; |
617ba13b MC |
1066 | case EXT4_IOC32_SETRSVSZ: |
1067 | cmd = EXT4_IOC_SETRSVSZ; | |
ac27a0ec | 1068 | break; |
4d92dc0f BH |
1069 | case EXT4_IOC32_GROUP_ADD: { |
1070 | struct compat_ext4_new_group_input __user *uinput; | |
1071 | struct ext4_new_group_input input; | |
1072 | mm_segment_t old_fs; | |
1073 | int err; | |
1074 | ||
1075 | uinput = compat_ptr(arg); | |
1076 | err = get_user(input.group, &uinput->group); | |
1077 | err |= get_user(input.block_bitmap, &uinput->block_bitmap); | |
1078 | err |= get_user(input.inode_bitmap, &uinput->inode_bitmap); | |
1079 | err |= get_user(input.inode_table, &uinput->inode_table); | |
1080 | err |= get_user(input.blocks_count, &uinput->blocks_count); | |
1081 | err |= get_user(input.reserved_blocks, | |
1082 | &uinput->reserved_blocks); | |
1083 | if (err) | |
1084 | return -EFAULT; | |
1085 | old_fs = get_fs(); | |
1086 | set_fs(KERNEL_DS); | |
1087 | err = ext4_ioctl(file, EXT4_IOC_GROUP_ADD, | |
1088 | (unsigned long) &input); | |
1089 | set_fs(old_fs); | |
1090 | return err; | |
1091 | } | |
b684b2ee | 1092 | case EXT4_IOC_MOVE_EXT: |
19c5246d | 1093 | case EXT4_IOC_RESIZE_FS: |
7869a4a6 | 1094 | case EXT4_IOC_PRECACHE_EXTENTS: |
9bd8212f MH |
1095 | case EXT4_IOC_SET_ENCRYPTION_POLICY: |
1096 | case EXT4_IOC_GET_ENCRYPTION_PWSALT: | |
1097 | case EXT4_IOC_GET_ENCRYPTION_POLICY: | |
e9be2ac7 | 1098 | case EXT4_IOC_SHUTDOWN: |
0c9ec4be | 1099 | case FS_IOC_GETFSMAP: |
b684b2ee | 1100 | break; |
ac27a0ec DK |
1101 | default: |
1102 | return -ENOIOCTLCMD; | |
1103 | } | |
5cdd7b2d | 1104 | return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); |
ac27a0ec DK |
1105 | } |
1106 | #endif |