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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" | |
ac27a0ec | 22 | |
393d1d1d DTB |
23 | /** |
24 | * Swap memory between @a and @b for @len bytes. | |
25 | * | |
26 | * @a: pointer to first memory area | |
27 | * @b: pointer to second memory area | |
28 | * @len: number of bytes to swap | |
29 | * | |
30 | */ | |
31 | static void memswap(void *a, void *b, size_t len) | |
32 | { | |
33 | unsigned char *ap, *bp; | |
393d1d1d DTB |
34 | |
35 | ap = (unsigned char *)a; | |
36 | bp = (unsigned char *)b; | |
37 | while (len-- > 0) { | |
4b7e2db5 | 38 | swap(*ap, *bp); |
393d1d1d DTB |
39 | ap++; |
40 | bp++; | |
41 | } | |
42 | } | |
43 | ||
44 | /** | |
45 | * Swap i_data and associated attributes between @inode1 and @inode2. | |
46 | * This function is used for the primary swap between inode1 and inode2 | |
47 | * and also to revert this primary swap in case of errors. | |
48 | * | |
49 | * Therefore you have to make sure, that calling this method twice | |
50 | * will revert all changes. | |
51 | * | |
52 | * @inode1: pointer to first inode | |
53 | * @inode2: pointer to second inode | |
54 | */ | |
55 | static void swap_inode_data(struct inode *inode1, struct inode *inode2) | |
56 | { | |
57 | loff_t isize; | |
58 | struct ext4_inode_info *ei1; | |
59 | struct ext4_inode_info *ei2; | |
60 | ||
61 | ei1 = EXT4_I(inode1); | |
62 | ei2 = EXT4_I(inode2); | |
63 | ||
64 | memswap(&inode1->i_flags, &inode2->i_flags, sizeof(inode1->i_flags)); | |
65 | memswap(&inode1->i_version, &inode2->i_version, | |
66 | sizeof(inode1->i_version)); | |
67 | memswap(&inode1->i_blocks, &inode2->i_blocks, | |
68 | sizeof(inode1->i_blocks)); | |
69 | memswap(&inode1->i_bytes, &inode2->i_bytes, sizeof(inode1->i_bytes)); | |
70 | memswap(&inode1->i_atime, &inode2->i_atime, sizeof(inode1->i_atime)); | |
71 | memswap(&inode1->i_mtime, &inode2->i_mtime, sizeof(inode1->i_mtime)); | |
72 | ||
73 | memswap(ei1->i_data, ei2->i_data, sizeof(ei1->i_data)); | |
74 | memswap(&ei1->i_flags, &ei2->i_flags, sizeof(ei1->i_flags)); | |
75 | memswap(&ei1->i_disksize, &ei2->i_disksize, sizeof(ei1->i_disksize)); | |
cde2d7a7 TT |
76 | ext4_es_remove_extent(inode1, 0, EXT_MAX_BLOCKS); |
77 | ext4_es_remove_extent(inode2, 0, EXT_MAX_BLOCKS); | |
393d1d1d DTB |
78 | |
79 | isize = i_size_read(inode1); | |
80 | i_size_write(inode1, i_size_read(inode2)); | |
81 | i_size_write(inode2, isize); | |
82 | } | |
83 | ||
84 | /** | |
85 | * Swap the information from the given @inode and the inode | |
86 | * EXT4_BOOT_LOADER_INO. It will basically swap i_data and all other | |
87 | * important fields of the inodes. | |
88 | * | |
89 | * @sb: the super block of the filesystem | |
90 | * @inode: the inode to swap with EXT4_BOOT_LOADER_INO | |
91 | * | |
92 | */ | |
93 | static long swap_inode_boot_loader(struct super_block *sb, | |
94 | struct inode *inode) | |
95 | { | |
96 | handle_t *handle; | |
97 | int err; | |
98 | struct inode *inode_bl; | |
393d1d1d | 99 | struct ext4_inode_info *ei_bl; |
d7092ae2 | 100 | struct ext4_sb_info *sbi = EXT4_SB(sb); |
393d1d1d | 101 | |
d8558a29 TT |
102 | if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode)) |
103 | return -EINVAL; | |
393d1d1d | 104 | |
d8558a29 TT |
105 | if (!inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN)) |
106 | return -EPERM; | |
393d1d1d | 107 | |
393d1d1d | 108 | inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO); |
d8558a29 TT |
109 | if (IS_ERR(inode_bl)) |
110 | return PTR_ERR(inode_bl); | |
393d1d1d DTB |
111 | ei_bl = EXT4_I(inode_bl); |
112 | ||
113 | filemap_flush(inode->i_mapping); | |
114 | filemap_flush(inode_bl->i_mapping); | |
115 | ||
116 | /* Protect orig inodes against a truncate and make sure, | |
117 | * that only 1 swap_inode_boot_loader is running. */ | |
375e289e | 118 | lock_two_nondirectories(inode, inode_bl); |
393d1d1d DTB |
119 | |
120 | truncate_inode_pages(&inode->i_data, 0); | |
121 | truncate_inode_pages(&inode_bl->i_data, 0); | |
122 | ||
123 | /* Wait for all existing dio workers */ | |
124 | ext4_inode_block_unlocked_dio(inode); | |
125 | ext4_inode_block_unlocked_dio(inode_bl); | |
126 | inode_dio_wait(inode); | |
127 | inode_dio_wait(inode_bl); | |
128 | ||
129 | handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2); | |
130 | if (IS_ERR(handle)) { | |
131 | err = -EINVAL; | |
30d29b11 | 132 | goto journal_err_out; |
393d1d1d DTB |
133 | } |
134 | ||
135 | /* Protect extent tree against block allocations via delalloc */ | |
136 | ext4_double_down_write_data_sem(inode, inode_bl); | |
137 | ||
138 | if (inode_bl->i_nlink == 0) { | |
139 | /* this inode has never been used as a BOOT_LOADER */ | |
140 | set_nlink(inode_bl, 1); | |
141 | i_uid_write(inode_bl, 0); | |
142 | i_gid_write(inode_bl, 0); | |
143 | inode_bl->i_flags = 0; | |
144 | ei_bl->i_flags = 0; | |
145 | inode_bl->i_version = 1; | |
146 | i_size_write(inode_bl, 0); | |
147 | inode_bl->i_mode = S_IFREG; | |
e2b911c5 | 148 | if (ext4_has_feature_extents(sb)) { |
393d1d1d DTB |
149 | ext4_set_inode_flag(inode_bl, EXT4_INODE_EXTENTS); |
150 | ext4_ext_tree_init(handle, inode_bl); | |
151 | } else | |
152 | memset(ei_bl->i_data, 0, sizeof(ei_bl->i_data)); | |
153 | } | |
154 | ||
155 | swap_inode_data(inode, inode_bl); | |
156 | ||
eeca7ea1 | 157 | inode->i_ctime = inode_bl->i_ctime = current_time(inode); |
393d1d1d DTB |
158 | |
159 | spin_lock(&sbi->s_next_gen_lock); | |
160 | inode->i_generation = sbi->s_next_generation++; | |
161 | inode_bl->i_generation = sbi->s_next_generation++; | |
162 | spin_unlock(&sbi->s_next_gen_lock); | |
163 | ||
164 | ext4_discard_preallocations(inode); | |
165 | ||
166 | err = ext4_mark_inode_dirty(handle, inode); | |
167 | if (err < 0) { | |
168 | ext4_warning(inode->i_sb, | |
169 | "couldn't mark inode #%lu dirty (err %d)", | |
170 | inode->i_ino, err); | |
171 | /* Revert all changes: */ | |
172 | swap_inode_data(inode, inode_bl); | |
173 | } else { | |
174 | err = ext4_mark_inode_dirty(handle, inode_bl); | |
175 | if (err < 0) { | |
176 | ext4_warning(inode_bl->i_sb, | |
177 | "couldn't mark inode #%lu dirty (err %d)", | |
178 | inode_bl->i_ino, err); | |
179 | /* Revert all changes: */ | |
180 | swap_inode_data(inode, inode_bl); | |
181 | ext4_mark_inode_dirty(handle, inode); | |
182 | } | |
183 | } | |
393d1d1d | 184 | ext4_journal_stop(handle); |
393d1d1d DTB |
185 | ext4_double_up_write_data_sem(inode, inode_bl); |
186 | ||
30d29b11 | 187 | journal_err_out: |
393d1d1d DTB |
188 | ext4_inode_resume_unlocked_dio(inode); |
189 | ext4_inode_resume_unlocked_dio(inode_bl); | |
375e289e | 190 | unlock_two_nondirectories(inode, inode_bl); |
393d1d1d | 191 | iput(inode_bl); |
393d1d1d DTB |
192 | return err; |
193 | } | |
194 | ||
ba679017 | 195 | #ifdef CONFIG_EXT4_FS_ENCRYPTION |
9bd8212f MH |
196 | static int uuid_is_zero(__u8 u[16]) |
197 | { | |
198 | int i; | |
199 | ||
200 | for (i = 0; i < 16; i++) | |
201 | if (u[i]) | |
202 | return 0; | |
203 | return 1; | |
204 | } | |
ba679017 | 205 | #endif |
9bd8212f | 206 | |
9b7365fc LX |
207 | static int ext4_ioctl_setflags(struct inode *inode, |
208 | unsigned int flags) | |
209 | { | |
210 | struct ext4_inode_info *ei = EXT4_I(inode); | |
211 | handle_t *handle = NULL; | |
fdde368e | 212 | int err = -EPERM, migrate = 0; |
9b7365fc LX |
213 | struct ext4_iloc iloc; |
214 | unsigned int oldflags, mask, i; | |
215 | unsigned int jflag; | |
216 | ||
217 | /* Is it quota file? Do not allow user to mess with it */ | |
218 | if (IS_NOQUOTA(inode)) | |
219 | goto flags_out; | |
220 | ||
221 | oldflags = ei->i_flags; | |
222 | ||
223 | /* The JOURNAL_DATA flag is modifiable only by root */ | |
224 | jflag = flags & EXT4_JOURNAL_DATA_FL; | |
225 | ||
226 | /* | |
227 | * The IMMUTABLE and APPEND_ONLY flags can only be changed by | |
228 | * the relevant capability. | |
229 | * | |
230 | * This test looks nicer. Thanks to Pauline Middelink | |
231 | */ | |
232 | if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) { | |
233 | if (!capable(CAP_LINUX_IMMUTABLE)) | |
234 | goto flags_out; | |
235 | } | |
236 | ||
237 | /* | |
238 | * The JOURNAL_DATA flag can only be changed by | |
239 | * the relevant capability. | |
240 | */ | |
241 | if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { | |
242 | if (!capable(CAP_SYS_RESOURCE)) | |
243 | goto flags_out; | |
244 | } | |
245 | if ((flags ^ oldflags) & EXT4_EXTENTS_FL) | |
246 | migrate = 1; | |
247 | ||
248 | if (flags & EXT4_EOFBLOCKS_FL) { | |
249 | /* we don't support adding EOFBLOCKS flag */ | |
250 | if (!(oldflags & EXT4_EOFBLOCKS_FL)) { | |
251 | err = -EOPNOTSUPP; | |
252 | goto flags_out; | |
253 | } | |
2c98eb5e TT |
254 | } else if (oldflags & EXT4_EOFBLOCKS_FL) { |
255 | err = ext4_truncate(inode); | |
256 | if (err) | |
257 | goto flags_out; | |
258 | } | |
9b7365fc LX |
259 | |
260 | handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); | |
261 | if (IS_ERR(handle)) { | |
262 | err = PTR_ERR(handle); | |
263 | goto flags_out; | |
264 | } | |
265 | if (IS_SYNC(inode)) | |
266 | ext4_handle_sync(handle); | |
267 | err = ext4_reserve_inode_write(handle, inode, &iloc); | |
268 | if (err) | |
269 | goto flags_err; | |
270 | ||
271 | for (i = 0, mask = 1; i < 32; i++, mask <<= 1) { | |
272 | if (!(mask & EXT4_FL_USER_MODIFIABLE)) | |
273 | continue; | |
f8011d93 JK |
274 | /* These flags get special treatment later */ |
275 | if (mask == EXT4_JOURNAL_DATA_FL || mask == EXT4_EXTENTS_FL) | |
276 | continue; | |
9b7365fc LX |
277 | if (mask & flags) |
278 | ext4_set_inode_flag(inode, i); | |
279 | else | |
280 | ext4_clear_inode_flag(inode, i); | |
281 | } | |
282 | ||
283 | ext4_set_inode_flags(inode); | |
eeca7ea1 | 284 | inode->i_ctime = current_time(inode); |
9b7365fc LX |
285 | |
286 | err = ext4_mark_iloc_dirty(handle, inode, &iloc); | |
287 | flags_err: | |
288 | ext4_journal_stop(handle); | |
289 | if (err) | |
290 | goto flags_out; | |
291 | ||
292 | if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) | |
293 | err = ext4_change_inode_journal_flag(inode, jflag); | |
294 | if (err) | |
295 | goto flags_out; | |
296 | if (migrate) { | |
297 | if (flags & EXT4_EXTENTS_FL) | |
298 | err = ext4_ext_migrate(inode); | |
299 | else | |
300 | err = ext4_ind_migrate(inode); | |
301 | } | |
302 | ||
303 | flags_out: | |
304 | return err; | |
305 | } | |
306 | ||
307 | #ifdef CONFIG_QUOTA | |
308 | static int ext4_ioctl_setproject(struct file *filp, __u32 projid) | |
309 | { | |
310 | struct inode *inode = file_inode(filp); | |
311 | struct super_block *sb = inode->i_sb; | |
312 | struct ext4_inode_info *ei = EXT4_I(inode); | |
313 | int err, rc; | |
314 | handle_t *handle; | |
315 | kprojid_t kprojid; | |
316 | struct ext4_iloc iloc; | |
317 | struct ext4_inode *raw_inode; | |
079788d0 | 318 | struct dquot *transfer_to[MAXQUOTAS] = { }; |
9b7365fc | 319 | |
0b7b7779 | 320 | if (!ext4_has_feature_project(sb)) { |
9b7365fc LX |
321 | if (projid != EXT4_DEF_PROJID) |
322 | return -EOPNOTSUPP; | |
323 | else | |
324 | return 0; | |
325 | } | |
326 | ||
327 | if (EXT4_INODE_SIZE(sb) <= EXT4_GOOD_OLD_INODE_SIZE) | |
328 | return -EOPNOTSUPP; | |
329 | ||
330 | kprojid = make_kprojid(&init_user_ns, (projid_t)projid); | |
331 | ||
332 | if (projid_eq(kprojid, EXT4_I(inode)->i_projid)) | |
333 | return 0; | |
334 | ||
335 | err = mnt_want_write_file(filp); | |
336 | if (err) | |
337 | return err; | |
338 | ||
339 | err = -EPERM; | |
5955102c | 340 | inode_lock(inode); |
9b7365fc LX |
341 | /* Is it quota file? Do not allow user to mess with it */ |
342 | if (IS_NOQUOTA(inode)) | |
343 | goto out_unlock; | |
344 | ||
345 | err = ext4_get_inode_loc(inode, &iloc); | |
346 | if (err) | |
347 | goto out_unlock; | |
348 | ||
349 | raw_inode = ext4_raw_inode(&iloc); | |
350 | if (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) { | |
351 | err = -EOVERFLOW; | |
352 | brelse(iloc.bh); | |
353 | goto out_unlock; | |
354 | } | |
355 | brelse(iloc.bh); | |
356 | ||
357 | dquot_initialize(inode); | |
358 | ||
359 | handle = ext4_journal_start(inode, EXT4_HT_QUOTA, | |
360 | EXT4_QUOTA_INIT_BLOCKS(sb) + | |
361 | EXT4_QUOTA_DEL_BLOCKS(sb) + 3); | |
362 | if (IS_ERR(handle)) { | |
363 | err = PTR_ERR(handle); | |
364 | goto out_unlock; | |
365 | } | |
366 | ||
367 | err = ext4_reserve_inode_write(handle, inode, &iloc); | |
368 | if (err) | |
369 | goto out_stop; | |
370 | ||
079788d0 WS |
371 | transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); |
372 | if (!IS_ERR(transfer_to[PRJQUOTA])) { | |
373 | err = __dquot_transfer(inode, transfer_to); | |
374 | dqput(transfer_to[PRJQUOTA]); | |
375 | if (err) | |
376 | goto out_dirty; | |
9b7365fc | 377 | } |
079788d0 | 378 | |
9b7365fc | 379 | EXT4_I(inode)->i_projid = kprojid; |
eeca7ea1 | 380 | inode->i_ctime = current_time(inode); |
9b7365fc LX |
381 | out_dirty: |
382 | rc = ext4_mark_iloc_dirty(handle, inode, &iloc); | |
383 | if (!err) | |
384 | err = rc; | |
385 | out_stop: | |
386 | ext4_journal_stop(handle); | |
387 | out_unlock: | |
5955102c | 388 | inode_unlock(inode); |
9b7365fc LX |
389 | mnt_drop_write_file(filp); |
390 | return err; | |
391 | } | |
392 | #else | |
393 | static int ext4_ioctl_setproject(struct file *filp, __u32 projid) | |
394 | { | |
395 | if (projid != EXT4_DEF_PROJID) | |
396 | return -EOPNOTSUPP; | |
397 | return 0; | |
398 | } | |
399 | #endif | |
400 | ||
401 | /* Transfer internal flags to xflags */ | |
402 | static inline __u32 ext4_iflags_to_xflags(unsigned long iflags) | |
403 | { | |
404 | __u32 xflags = 0; | |
405 | ||
406 | if (iflags & EXT4_SYNC_FL) | |
407 | xflags |= FS_XFLAG_SYNC; | |
408 | if (iflags & EXT4_IMMUTABLE_FL) | |
409 | xflags |= FS_XFLAG_IMMUTABLE; | |
410 | if (iflags & EXT4_APPEND_FL) | |
411 | xflags |= FS_XFLAG_APPEND; | |
412 | if (iflags & EXT4_NODUMP_FL) | |
413 | xflags |= FS_XFLAG_NODUMP; | |
414 | if (iflags & EXT4_NOATIME_FL) | |
415 | xflags |= FS_XFLAG_NOATIME; | |
416 | if (iflags & EXT4_PROJINHERIT_FL) | |
417 | xflags |= FS_XFLAG_PROJINHERIT; | |
418 | return xflags; | |
419 | } | |
420 | ||
d14e7683 JK |
421 | #define EXT4_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \ |
422 | FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \ | |
423 | FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT) | |
424 | ||
9b7365fc LX |
425 | /* Transfer xflags flags to internal */ |
426 | static inline unsigned long ext4_xflags_to_iflags(__u32 xflags) | |
427 | { | |
428 | unsigned long iflags = 0; | |
429 | ||
430 | if (xflags & FS_XFLAG_SYNC) | |
431 | iflags |= EXT4_SYNC_FL; | |
432 | if (xflags & FS_XFLAG_IMMUTABLE) | |
433 | iflags |= EXT4_IMMUTABLE_FL; | |
434 | if (xflags & FS_XFLAG_APPEND) | |
435 | iflags |= EXT4_APPEND_FL; | |
436 | if (xflags & FS_XFLAG_NODUMP) | |
437 | iflags |= EXT4_NODUMP_FL; | |
438 | if (xflags & FS_XFLAG_NOATIME) | |
439 | iflags |= EXT4_NOATIME_FL; | |
440 | if (xflags & FS_XFLAG_PROJINHERIT) | |
441 | iflags |= EXT4_PROJINHERIT_FL; | |
442 | ||
443 | return iflags; | |
444 | } | |
445 | ||
e9be2ac7 | 446 | int ext4_shutdown(struct super_block *sb, unsigned long arg) |
783d9485 TT |
447 | { |
448 | struct ext4_sb_info *sbi = EXT4_SB(sb); | |
449 | __u32 flags; | |
450 | ||
451 | if (!capable(CAP_SYS_ADMIN)) | |
452 | return -EPERM; | |
453 | ||
454 | if (get_user(flags, (__u32 __user *)arg)) | |
455 | return -EFAULT; | |
456 | ||
457 | if (flags > EXT4_GOING_FLAGS_NOLOGFLUSH) | |
458 | return -EINVAL; | |
459 | ||
460 | if (ext4_forced_shutdown(sbi)) | |
461 | return 0; | |
462 | ||
463 | ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags); | |
464 | ||
465 | switch (flags) { | |
466 | case EXT4_GOING_FLAGS_DEFAULT: | |
467 | freeze_bdev(sb->s_bdev); | |
468 | set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); | |
469 | thaw_bdev(sb->s_bdev, sb); | |
470 | break; | |
471 | case EXT4_GOING_FLAGS_LOGFLUSH: | |
472 | set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); | |
473 | if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { | |
474 | (void) ext4_force_commit(sb); | |
475 | jbd2_journal_abort(sbi->s_journal, 0); | |
476 | } | |
477 | break; | |
478 | case EXT4_GOING_FLAGS_NOLOGFLUSH: | |
479 | set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); | |
480 | if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { | |
481 | msleep(100); | |
482 | jbd2_journal_abort(sbi->s_journal, 0); | |
483 | } | |
484 | break; | |
485 | default: | |
486 | return -EINVAL; | |
487 | } | |
488 | clear_opt(sb, DISCARD); | |
489 | return 0; | |
490 | } | |
491 | ||
5cdd7b2d | 492 | long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
ac27a0ec | 493 | { |
496ad9aa | 494 | struct inode *inode = file_inode(filp); |
bab08ab9 | 495 | struct super_block *sb = inode->i_sb; |
617ba13b | 496 | struct ext4_inode_info *ei = EXT4_I(inode); |
ac27a0ec | 497 | unsigned int flags; |
ac27a0ec | 498 | |
af5bc92d | 499 | ext4_debug("cmd = %u, arg = %lu\n", cmd, arg); |
ac27a0ec DK |
500 | |
501 | switch (cmd) { | |
617ba13b | 502 | case EXT4_IOC_GETFLAGS: |
ff9ddf7e | 503 | ext4_get_inode_flags(ei); |
617ba13b | 504 | flags = ei->i_flags & EXT4_FL_USER_VISIBLE; |
ac27a0ec | 505 | return put_user(flags, (int __user *) arg); |
617ba13b | 506 | case EXT4_IOC_SETFLAGS: { |
9b7365fc | 507 | int err; |
ac27a0ec | 508 | |
2e149670 | 509 | if (!inode_owner_or_capable(inode)) |
ac27a0ec DK |
510 | return -EACCES; |
511 | ||
512 | if (get_user(flags, (int __user *) arg)) | |
513 | return -EFAULT; | |
514 | ||
d14e7683 JK |
515 | if (flags & ~EXT4_FL_USER_VISIBLE) |
516 | return -EOPNOTSUPP; | |
517 | /* | |
518 | * chattr(1) grabs flags via GETFLAGS, modifies the result and | |
519 | * passes that to SETFLAGS. So we cannot easily make SETFLAGS | |
520 | * more restrictive than just silently masking off visible but | |
521 | * not settable flags as we always did. | |
522 | */ | |
523 | flags &= EXT4_FL_USER_MODIFIABLE; | |
524 | if (ext4_mask_flags(inode->i_mode, flags) != flags) | |
525 | return -EOPNOTSUPP; | |
526 | ||
a561be71 | 527 | err = mnt_want_write_file(filp); |
42a74f20 DH |
528 | if (err) |
529 | return err; | |
530 | ||
5955102c | 531 | inode_lock(inode); |
9b7365fc | 532 | err = ext4_ioctl_setflags(inode, flags); |
5955102c | 533 | inode_unlock(inode); |
2a79f17e | 534 | mnt_drop_write_file(filp); |
ac27a0ec DK |
535 | return err; |
536 | } | |
617ba13b MC |
537 | case EXT4_IOC_GETVERSION: |
538 | case EXT4_IOC_GETVERSION_OLD: | |
ac27a0ec | 539 | return put_user(inode->i_generation, (int __user *) arg); |
617ba13b MC |
540 | case EXT4_IOC_SETVERSION: |
541 | case EXT4_IOC_SETVERSION_OLD: { | |
ac27a0ec | 542 | handle_t *handle; |
617ba13b | 543 | struct ext4_iloc iloc; |
ac27a0ec DK |
544 | __u32 generation; |
545 | int err; | |
546 | ||
2e149670 | 547 | if (!inode_owner_or_capable(inode)) |
ac27a0ec | 548 | return -EPERM; |
42a74f20 | 549 | |
9aa5d32b | 550 | if (ext4_has_metadata_csum(inode->i_sb)) { |
814525f4 DW |
551 | ext4_warning(sb, "Setting inode version is not " |
552 | "supported with metadata_csum enabled."); | |
553 | return -ENOTTY; | |
554 | } | |
555 | ||
a561be71 | 556 | err = mnt_want_write_file(filp); |
42a74f20 DH |
557 | if (err) |
558 | return err; | |
559 | if (get_user(generation, (int __user *) arg)) { | |
560 | err = -EFAULT; | |
561 | goto setversion_out; | |
562 | } | |
ac27a0ec | 563 | |
5955102c | 564 | inode_lock(inode); |
9924a92a | 565 | handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); |
42a74f20 DH |
566 | if (IS_ERR(handle)) { |
567 | err = PTR_ERR(handle); | |
6c2155b9 | 568 | goto unlock_out; |
42a74f20 | 569 | } |
617ba13b | 570 | err = ext4_reserve_inode_write(handle, inode, &iloc); |
ac27a0ec | 571 | if (err == 0) { |
eeca7ea1 | 572 | inode->i_ctime = current_time(inode); |
ac27a0ec | 573 | inode->i_generation = generation; |
617ba13b | 574 | err = ext4_mark_iloc_dirty(handle, inode, &iloc); |
ac27a0ec | 575 | } |
617ba13b | 576 | ext4_journal_stop(handle); |
6c2155b9 DH |
577 | |
578 | unlock_out: | |
5955102c | 579 | inode_unlock(inode); |
42a74f20 | 580 | setversion_out: |
2a79f17e | 581 | mnt_drop_write_file(filp); |
ac27a0ec DK |
582 | return err; |
583 | } | |
617ba13b MC |
584 | case EXT4_IOC_GROUP_EXTEND: { |
585 | ext4_fsblk_t n_blocks_count; | |
ac046f1d | 586 | int err, err2=0; |
ac27a0ec | 587 | |
8f82f840 YY |
588 | err = ext4_resize_begin(sb); |
589 | if (err) | |
590 | return err; | |
ac27a0ec | 591 | |
014a1770 DH |
592 | if (get_user(n_blocks_count, (__u32 __user *)arg)) { |
593 | err = -EFAULT; | |
594 | goto group_extend_out; | |
595 | } | |
ac27a0ec | 596 | |
e2b911c5 | 597 | if (ext4_has_feature_bigalloc(sb)) { |
bab08ab9 TT |
598 | ext4_msg(sb, KERN_ERR, |
599 | "Online resizing not supported with bigalloc"); | |
014a1770 DH |
600 | err = -EOPNOTSUPP; |
601 | goto group_extend_out; | |
bab08ab9 TT |
602 | } |
603 | ||
a561be71 | 604 | err = mnt_want_write_file(filp); |
42a74f20 | 605 | if (err) |
014a1770 | 606 | goto group_extend_out; |
42a74f20 | 607 | |
617ba13b | 608 | err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count); |
ac046f1d PT |
609 | if (EXT4_SB(sb)->s_journal) { |
610 | jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); | |
611 | err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); | |
612 | jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); | |
613 | } | |
7ffe1ea8 HK |
614 | if (err == 0) |
615 | err = err2; | |
2a79f17e | 616 | mnt_drop_write_file(filp); |
014a1770 | 617 | group_extend_out: |
8f82f840 | 618 | ext4_resize_end(sb); |
ac27a0ec DK |
619 | return err; |
620 | } | |
748de673 AF |
621 | |
622 | case EXT4_IOC_MOVE_EXT: { | |
623 | struct move_extent me; | |
2903ff01 AV |
624 | struct fd donor; |
625 | int err; | |
748de673 | 626 | |
4a58579b AF |
627 | if (!(filp->f_mode & FMODE_READ) || |
628 | !(filp->f_mode & FMODE_WRITE)) | |
629 | return -EBADF; | |
630 | ||
748de673 AF |
631 | if (copy_from_user(&me, |
632 | (struct move_extent __user *)arg, sizeof(me))) | |
633 | return -EFAULT; | |
4a58579b | 634 | me.moved_len = 0; |
748de673 | 635 | |
2903ff01 AV |
636 | donor = fdget(me.donor_fd); |
637 | if (!donor.file) | |
748de673 AF |
638 | return -EBADF; |
639 | ||
2903ff01 | 640 | if (!(donor.file->f_mode & FMODE_WRITE)) { |
4a58579b AF |
641 | err = -EBADF; |
642 | goto mext_out; | |
748de673 AF |
643 | } |
644 | ||
e2b911c5 | 645 | if (ext4_has_feature_bigalloc(sb)) { |
bab08ab9 TT |
646 | ext4_msg(sb, KERN_ERR, |
647 | "Online defrag not supported with bigalloc"); | |
399c9b86 AV |
648 | err = -EOPNOTSUPP; |
649 | goto mext_out; | |
73f34a5e RZ |
650 | } else if (IS_DAX(inode)) { |
651 | ext4_msg(sb, KERN_ERR, | |
652 | "Online defrag not supported with DAX"); | |
653 | err = -EOPNOTSUPP; | |
654 | goto mext_out; | |
bab08ab9 TT |
655 | } |
656 | ||
a561be71 | 657 | err = mnt_want_write_file(filp); |
4a58579b AF |
658 | if (err) |
659 | goto mext_out; | |
660 | ||
2903ff01 | 661 | err = ext4_move_extents(filp, donor.file, me.orig_start, |
748de673 | 662 | me.donor_start, me.len, &me.moved_len); |
2a79f17e | 663 | mnt_drop_write_file(filp); |
748de673 | 664 | |
60e6679e | 665 | if (copy_to_user((struct move_extent __user *)arg, |
c437b273 | 666 | &me, sizeof(me))) |
4a58579b AF |
667 | err = -EFAULT; |
668 | mext_out: | |
2903ff01 | 669 | fdput(donor); |
748de673 AF |
670 | return err; |
671 | } | |
672 | ||
617ba13b MC |
673 | case EXT4_IOC_GROUP_ADD: { |
674 | struct ext4_new_group_data input; | |
ac046f1d | 675 | int err, err2=0; |
ac27a0ec | 676 | |
8f82f840 YY |
677 | err = ext4_resize_begin(sb); |
678 | if (err) | |
679 | return err; | |
ac27a0ec | 680 | |
617ba13b | 681 | if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg, |
014a1770 DH |
682 | sizeof(input))) { |
683 | err = -EFAULT; | |
684 | goto group_add_out; | |
685 | } | |
ac27a0ec | 686 | |
e2b911c5 | 687 | if (ext4_has_feature_bigalloc(sb)) { |
bab08ab9 TT |
688 | ext4_msg(sb, KERN_ERR, |
689 | "Online resizing not supported with bigalloc"); | |
014a1770 DH |
690 | err = -EOPNOTSUPP; |
691 | goto group_add_out; | |
bab08ab9 TT |
692 | } |
693 | ||
a561be71 | 694 | err = mnt_want_write_file(filp); |
42a74f20 | 695 | if (err) |
014a1770 | 696 | goto group_add_out; |
42a74f20 | 697 | |
617ba13b | 698 | err = ext4_group_add(sb, &input); |
ac046f1d PT |
699 | if (EXT4_SB(sb)->s_journal) { |
700 | jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); | |
701 | err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); | |
702 | jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); | |
703 | } | |
7ffe1ea8 HK |
704 | if (err == 0) |
705 | err = err2; | |
2a79f17e | 706 | mnt_drop_write_file(filp); |
7f511862 TT |
707 | if (!err && ext4_has_group_desc_csum(sb) && |
708 | test_opt(sb, INIT_INODE_TABLE)) | |
709 | err = ext4_register_li_request(sb, input.group); | |
014a1770 | 710 | group_add_out: |
8f82f840 | 711 | ext4_resize_end(sb); |
ac27a0ec DK |
712 | return err; |
713 | } | |
714 | ||
c14c6fd5 | 715 | case EXT4_IOC_MIGRATE: |
2a43a878 AK |
716 | { |
717 | int err; | |
2e149670 | 718 | if (!inode_owner_or_capable(inode)) |
2a43a878 AK |
719 | return -EACCES; |
720 | ||
a561be71 | 721 | err = mnt_want_write_file(filp); |
2a43a878 AK |
722 | if (err) |
723 | return err; | |
724 | /* | |
725 | * inode_mutex prevent write and truncate on the file. | |
726 | * Read still goes through. We take i_data_sem in | |
727 | * ext4_ext_swap_inode_data before we switch the | |
728 | * inode format to prevent read. | |
729 | */ | |
5955102c | 730 | inode_lock((inode)); |
2a43a878 | 731 | err = ext4_ext_migrate(inode); |
5955102c | 732 | inode_unlock((inode)); |
2a79f17e | 733 | mnt_drop_write_file(filp); |
2a43a878 AK |
734 | return err; |
735 | } | |
c14c6fd5 | 736 | |
ccd2506b TT |
737 | case EXT4_IOC_ALLOC_DA_BLKS: |
738 | { | |
739 | int err; | |
2e149670 | 740 | if (!inode_owner_or_capable(inode)) |
ccd2506b TT |
741 | return -EACCES; |
742 | ||
a561be71 | 743 | err = mnt_want_write_file(filp); |
ccd2506b TT |
744 | if (err) |
745 | return err; | |
746 | err = ext4_alloc_da_blocks(inode); | |
2a79f17e | 747 | mnt_drop_write_file(filp); |
ccd2506b TT |
748 | return err; |
749 | } | |
750 | ||
393d1d1d | 751 | case EXT4_IOC_SWAP_BOOT: |
3e67cfad DM |
752 | { |
753 | int err; | |
393d1d1d DTB |
754 | if (!(filp->f_mode & FMODE_WRITE)) |
755 | return -EBADF; | |
3e67cfad DM |
756 | err = mnt_want_write_file(filp); |
757 | if (err) | |
758 | return err; | |
759 | err = swap_inode_boot_loader(sb, inode); | |
760 | mnt_drop_write_file(filp); | |
761 | return err; | |
762 | } | |
393d1d1d | 763 | |
19c5246d YY |
764 | case EXT4_IOC_RESIZE_FS: { |
765 | ext4_fsblk_t n_blocks_count; | |
19c5246d | 766 | int err = 0, err2 = 0; |
7f511862 | 767 | ext4_group_t o_group = EXT4_SB(sb)->s_groups_count; |
19c5246d | 768 | |
e2b911c5 | 769 | if (ext4_has_feature_bigalloc(sb)) { |
19c5246d YY |
770 | ext4_msg(sb, KERN_ERR, |
771 | "Online resizing not (yet) supported with bigalloc"); | |
772 | return -EOPNOTSUPP; | |
773 | } | |
774 | ||
19c5246d YY |
775 | if (copy_from_user(&n_blocks_count, (__u64 __user *)arg, |
776 | sizeof(__u64))) { | |
777 | return -EFAULT; | |
778 | } | |
779 | ||
19c5246d YY |
780 | err = ext4_resize_begin(sb); |
781 | if (err) | |
782 | return err; | |
783 | ||
8cae6f71 | 784 | err = mnt_want_write_file(filp); |
19c5246d YY |
785 | if (err) |
786 | goto resizefs_out; | |
787 | ||
788 | err = ext4_resize_fs(sb, n_blocks_count); | |
789 | if (EXT4_SB(sb)->s_journal) { | |
790 | jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); | |
791 | err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); | |
792 | jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); | |
793 | } | |
794 | if (err == 0) | |
795 | err = err2; | |
8cae6f71 | 796 | mnt_drop_write_file(filp); |
7f511862 TT |
797 | if (!err && (o_group > EXT4_SB(sb)->s_groups_count) && |
798 | ext4_has_group_desc_csum(sb) && | |
799 | test_opt(sb, INIT_INODE_TABLE)) | |
800 | err = ext4_register_li_request(sb, o_group); | |
801 | ||
19c5246d YY |
802 | resizefs_out: |
803 | ext4_resize_end(sb); | |
804 | return err; | |
805 | } | |
806 | ||
e681c047 LC |
807 | case FITRIM: |
808 | { | |
41431792 | 809 | struct request_queue *q = bdev_get_queue(sb->s_bdev); |
e681c047 LC |
810 | struct fstrim_range range; |
811 | int ret = 0; | |
812 | ||
813 | if (!capable(CAP_SYS_ADMIN)) | |
814 | return -EPERM; | |
815 | ||
41431792 LC |
816 | if (!blk_queue_discard(q)) |
817 | return -EOPNOTSUPP; | |
818 | ||
e6705f7c | 819 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
e681c047 LC |
820 | sizeof(range))) |
821 | return -EFAULT; | |
822 | ||
5c2ed62f LC |
823 | range.minlen = max((unsigned int)range.minlen, |
824 | q->limits.discard_granularity); | |
e681c047 LC |
825 | ret = ext4_trim_fs(sb, &range); |
826 | if (ret < 0) | |
827 | return ret; | |
828 | ||
e6705f7c | 829 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
e681c047 LC |
830 | sizeof(range))) |
831 | return -EFAULT; | |
832 | ||
833 | return 0; | |
834 | } | |
7869a4a6 TT |
835 | case EXT4_IOC_PRECACHE_EXTENTS: |
836 | return ext4_ext_precache(inode); | |
9bd8212f | 837 | |
db717d8e | 838 | case EXT4_IOC_SET_ENCRYPTION_POLICY: |
9a200d07 RW |
839 | if (!ext4_has_feature_encrypt(sb)) |
840 | return -EOPNOTSUPP; | |
db717d8e | 841 | return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); |
9a200d07 | 842 | |
9bd8212f | 843 | case EXT4_IOC_GET_ENCRYPTION_PWSALT: { |
ba679017 | 844 | #ifdef CONFIG_EXT4_FS_ENCRYPTION |
9bd8212f MH |
845 | int err, err2; |
846 | struct ext4_sb_info *sbi = EXT4_SB(sb); | |
847 | handle_t *handle; | |
848 | ||
35997d1c | 849 | if (!ext4_has_feature_encrypt(sb)) |
9bd8212f MH |
850 | return -EOPNOTSUPP; |
851 | if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) { | |
852 | err = mnt_want_write_file(filp); | |
853 | if (err) | |
854 | return err; | |
855 | handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1); | |
856 | if (IS_ERR(handle)) { | |
857 | err = PTR_ERR(handle); | |
858 | goto pwsalt_err_exit; | |
859 | } | |
860 | err = ext4_journal_get_write_access(handle, sbi->s_sbh); | |
861 | if (err) | |
862 | goto pwsalt_err_journal; | |
863 | generate_random_uuid(sbi->s_es->s_encrypt_pw_salt); | |
864 | err = ext4_handle_dirty_metadata(handle, NULL, | |
865 | sbi->s_sbh); | |
866 | pwsalt_err_journal: | |
867 | err2 = ext4_journal_stop(handle); | |
868 | if (err2 && !err) | |
869 | err = err2; | |
870 | pwsalt_err_exit: | |
871 | mnt_drop_write_file(filp); | |
872 | if (err) | |
873 | return err; | |
874 | } | |
b4ab9e29 FF |
875 | if (copy_to_user((void __user *) arg, |
876 | sbi->s_es->s_encrypt_pw_salt, 16)) | |
9bd8212f MH |
877 | return -EFAULT; |
878 | return 0; | |
ba679017 EB |
879 | #else |
880 | return -EOPNOTSUPP; | |
881 | #endif | |
9bd8212f | 882 | } |
db717d8e EB |
883 | case EXT4_IOC_GET_ENCRYPTION_POLICY: |
884 | return fscrypt_ioctl_get_policy(filp, (void __user *)arg); | |
9bd8212f | 885 | |
9b7365fc LX |
886 | case EXT4_IOC_FSGETXATTR: |
887 | { | |
888 | struct fsxattr fa; | |
889 | ||
890 | memset(&fa, 0, sizeof(struct fsxattr)); | |
891 | ext4_get_inode_flags(ei); | |
892 | fa.fsx_xflags = ext4_iflags_to_xflags(ei->i_flags & EXT4_FL_USER_VISIBLE); | |
893 | ||
0b7b7779 | 894 | if (ext4_has_feature_project(inode->i_sb)) { |
9b7365fc LX |
895 | fa.fsx_projid = (__u32)from_kprojid(&init_user_ns, |
896 | EXT4_I(inode)->i_projid); | |
897 | } | |
898 | ||
899 | if (copy_to_user((struct fsxattr __user *)arg, | |
900 | &fa, sizeof(fa))) | |
901 | return -EFAULT; | |
902 | return 0; | |
903 | } | |
904 | case EXT4_IOC_FSSETXATTR: | |
905 | { | |
906 | struct fsxattr fa; | |
907 | int err; | |
908 | ||
909 | if (copy_from_user(&fa, (struct fsxattr __user *)arg, | |
910 | sizeof(fa))) | |
911 | return -EFAULT; | |
912 | ||
913 | /* Make sure caller has proper permission */ | |
914 | if (!inode_owner_or_capable(inode)) | |
915 | return -EACCES; | |
916 | ||
d14e7683 JK |
917 | if (fa.fsx_xflags & ~EXT4_SUPPORTED_FS_XFLAGS) |
918 | return -EOPNOTSUPP; | |
919 | ||
920 | flags = ext4_xflags_to_iflags(fa.fsx_xflags); | |
921 | if (ext4_mask_flags(inode->i_mode, flags) != flags) | |
922 | return -EOPNOTSUPP; | |
923 | ||
9b7365fc LX |
924 | err = mnt_want_write_file(filp); |
925 | if (err) | |
926 | return err; | |
927 | ||
5955102c | 928 | inode_lock(inode); |
9b7365fc LX |
929 | flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) | |
930 | (flags & EXT4_FL_XFLAG_VISIBLE); | |
931 | err = ext4_ioctl_setflags(inode, flags); | |
5955102c | 932 | inode_unlock(inode); |
9b7365fc LX |
933 | mnt_drop_write_file(filp); |
934 | if (err) | |
935 | return err; | |
936 | ||
937 | err = ext4_ioctl_setproject(filp, fa.fsx_projid); | |
938 | if (err) | |
939 | return err; | |
940 | ||
941 | return 0; | |
942 | } | |
e9be2ac7 TT |
943 | case EXT4_IOC_SHUTDOWN: |
944 | return ext4_shutdown(sb, arg); | |
ac27a0ec DK |
945 | default: |
946 | return -ENOTTY; | |
947 | } | |
948 | } | |
949 | ||
950 | #ifdef CONFIG_COMPAT | |
617ba13b | 951 | long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
ac27a0ec | 952 | { |
ac27a0ec DK |
953 | /* These are just misnamed, they actually get/put from/to user an int */ |
954 | switch (cmd) { | |
617ba13b MC |
955 | case EXT4_IOC32_GETFLAGS: |
956 | cmd = EXT4_IOC_GETFLAGS; | |
ac27a0ec | 957 | break; |
617ba13b MC |
958 | case EXT4_IOC32_SETFLAGS: |
959 | cmd = EXT4_IOC_SETFLAGS; | |
ac27a0ec | 960 | break; |
617ba13b MC |
961 | case EXT4_IOC32_GETVERSION: |
962 | cmd = EXT4_IOC_GETVERSION; | |
ac27a0ec | 963 | break; |
617ba13b MC |
964 | case EXT4_IOC32_SETVERSION: |
965 | cmd = EXT4_IOC_SETVERSION; | |
ac27a0ec | 966 | break; |
617ba13b MC |
967 | case EXT4_IOC32_GROUP_EXTEND: |
968 | cmd = EXT4_IOC_GROUP_EXTEND; | |
ac27a0ec | 969 | break; |
617ba13b MC |
970 | case EXT4_IOC32_GETVERSION_OLD: |
971 | cmd = EXT4_IOC_GETVERSION_OLD; | |
ac27a0ec | 972 | break; |
617ba13b MC |
973 | case EXT4_IOC32_SETVERSION_OLD: |
974 | cmd = EXT4_IOC_SETVERSION_OLD; | |
ac27a0ec | 975 | break; |
617ba13b MC |
976 | case EXT4_IOC32_GETRSVSZ: |
977 | cmd = EXT4_IOC_GETRSVSZ; | |
ac27a0ec | 978 | break; |
617ba13b MC |
979 | case EXT4_IOC32_SETRSVSZ: |
980 | cmd = EXT4_IOC_SETRSVSZ; | |
ac27a0ec | 981 | break; |
4d92dc0f BH |
982 | case EXT4_IOC32_GROUP_ADD: { |
983 | struct compat_ext4_new_group_input __user *uinput; | |
984 | struct ext4_new_group_input input; | |
985 | mm_segment_t old_fs; | |
986 | int err; | |
987 | ||
988 | uinput = compat_ptr(arg); | |
989 | err = get_user(input.group, &uinput->group); | |
990 | err |= get_user(input.block_bitmap, &uinput->block_bitmap); | |
991 | err |= get_user(input.inode_bitmap, &uinput->inode_bitmap); | |
992 | err |= get_user(input.inode_table, &uinput->inode_table); | |
993 | err |= get_user(input.blocks_count, &uinput->blocks_count); | |
994 | err |= get_user(input.reserved_blocks, | |
995 | &uinput->reserved_blocks); | |
996 | if (err) | |
997 | return -EFAULT; | |
998 | old_fs = get_fs(); | |
999 | set_fs(KERNEL_DS); | |
1000 | err = ext4_ioctl(file, EXT4_IOC_GROUP_ADD, | |
1001 | (unsigned long) &input); | |
1002 | set_fs(old_fs); | |
1003 | return err; | |
1004 | } | |
b684b2ee | 1005 | case EXT4_IOC_MOVE_EXT: |
19c5246d | 1006 | case EXT4_IOC_RESIZE_FS: |
7869a4a6 | 1007 | case EXT4_IOC_PRECACHE_EXTENTS: |
9bd8212f MH |
1008 | case EXT4_IOC_SET_ENCRYPTION_POLICY: |
1009 | case EXT4_IOC_GET_ENCRYPTION_PWSALT: | |
1010 | case EXT4_IOC_GET_ENCRYPTION_POLICY: | |
e9be2ac7 | 1011 | case EXT4_IOC_SHUTDOWN: |
b684b2ee | 1012 | break; |
ac27a0ec DK |
1013 | default: |
1014 | return -ENOIOCTLCMD; | |
1015 | } | |
5cdd7b2d | 1016 | return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); |
ac27a0ec DK |
1017 | } |
1018 | #endif |