2 * linux/fs/ext4/ioctl.c
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)
11 #include <linux/capability.h>
12 #include <linux/time.h>
13 #include <linux/compat.h>
14 #include <linux/mount.h>
15 #include <linux/file.h>
16 #include <linux/quotaops.h>
17 #include <linux/uuid.h>
18 #include <asm/uaccess.h>
19 #include "ext4_jbd2.h"
23 * Swap memory between @a and @b for @len bytes.
25 * @a: pointer to first memory area
26 * @b: pointer to second memory area
27 * @len: number of bytes to swap
30 static void memswap(void *a, void *b, size_t len)
32 unsigned char *ap, *bp;
34 ap = (unsigned char *)a;
35 bp = (unsigned char *)b;
44 * Swap i_data and associated attributes between @inode1 and @inode2.
45 * This function is used for the primary swap between inode1 and inode2
46 * and also to revert this primary swap in case of errors.
48 * Therefore you have to make sure, that calling this method twice
49 * will revert all changes.
51 * @inode1: pointer to first inode
52 * @inode2: pointer to second inode
54 static void swap_inode_data(struct inode *inode1, struct inode *inode2)
57 struct ext4_inode_info *ei1;
58 struct ext4_inode_info *ei2;
63 memswap(&inode1->i_flags, &inode2->i_flags, sizeof(inode1->i_flags));
64 memswap(&inode1->i_version, &inode2->i_version,
65 sizeof(inode1->i_version));
66 memswap(&inode1->i_blocks, &inode2->i_blocks,
67 sizeof(inode1->i_blocks));
68 memswap(&inode1->i_bytes, &inode2->i_bytes, sizeof(inode1->i_bytes));
69 memswap(&inode1->i_atime, &inode2->i_atime, sizeof(inode1->i_atime));
70 memswap(&inode1->i_mtime, &inode2->i_mtime, sizeof(inode1->i_mtime));
72 memswap(ei1->i_data, ei2->i_data, sizeof(ei1->i_data));
73 memswap(&ei1->i_flags, &ei2->i_flags, sizeof(ei1->i_flags));
74 memswap(&ei1->i_disksize, &ei2->i_disksize, sizeof(ei1->i_disksize));
75 ext4_es_remove_extent(inode1, 0, EXT_MAX_BLOCKS);
76 ext4_es_remove_extent(inode2, 0, EXT_MAX_BLOCKS);
78 isize = i_size_read(inode1);
79 i_size_write(inode1, i_size_read(inode2));
80 i_size_write(inode2, isize);
84 * Swap the information from the given @inode and the inode
85 * EXT4_BOOT_LOADER_INO. It will basically swap i_data and all other
86 * important fields of the inodes.
88 * @sb: the super block of the filesystem
89 * @inode: the inode to swap with EXT4_BOOT_LOADER_INO
92 static long swap_inode_boot_loader(struct super_block *sb,
97 struct inode *inode_bl;
98 struct ext4_inode_info *ei_bl;
99 struct ext4_sb_info *sbi = EXT4_SB(sb);
101 if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode))
104 if (!inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN))
107 inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO, EXT4_IGET_SPECIAL);
108 if (IS_ERR(inode_bl))
109 return PTR_ERR(inode_bl);
110 ei_bl = EXT4_I(inode_bl);
112 filemap_flush(inode->i_mapping);
113 filemap_flush(inode_bl->i_mapping);
115 /* Protect orig inodes against a truncate and make sure,
116 * that only 1 swap_inode_boot_loader is running. */
117 lock_two_nondirectories(inode, inode_bl);
119 truncate_inode_pages(&inode->i_data, 0);
120 truncate_inode_pages(&inode_bl->i_data, 0);
122 /* Wait for all existing dio workers */
123 ext4_inode_block_unlocked_dio(inode);
124 ext4_inode_block_unlocked_dio(inode_bl);
125 inode_dio_wait(inode);
126 inode_dio_wait(inode_bl);
128 handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2);
129 if (IS_ERR(handle)) {
131 goto journal_err_out;
134 /* Protect extent tree against block allocations via delalloc */
135 ext4_double_down_write_data_sem(inode, inode_bl);
137 if (inode_bl->i_nlink == 0) {
138 /* this inode has never been used as a BOOT_LOADER */
139 set_nlink(inode_bl, 1);
140 i_uid_write(inode_bl, 0);
141 i_gid_write(inode_bl, 0);
142 inode_bl->i_flags = 0;
144 inode_bl->i_version = 1;
145 i_size_write(inode_bl, 0);
146 inode_bl->i_mode = S_IFREG;
147 if (ext4_has_feature_extents(sb)) {
148 ext4_set_inode_flag(inode_bl, EXT4_INODE_EXTENTS);
149 ext4_ext_tree_init(handle, inode_bl);
151 memset(ei_bl->i_data, 0, sizeof(ei_bl->i_data));
154 swap_inode_data(inode, inode_bl);
156 inode->i_ctime = inode_bl->i_ctime = ext4_current_time(inode);
158 spin_lock(&sbi->s_next_gen_lock);
159 inode->i_generation = sbi->s_next_generation++;
160 inode_bl->i_generation = sbi->s_next_generation++;
161 spin_unlock(&sbi->s_next_gen_lock);
163 ext4_discard_preallocations(inode);
165 err = ext4_mark_inode_dirty(handle, inode);
167 ext4_warning(inode->i_sb,
168 "couldn't mark inode #%lu dirty (err %d)",
170 /* Revert all changes: */
171 swap_inode_data(inode, inode_bl);
173 err = ext4_mark_inode_dirty(handle, inode_bl);
175 ext4_warning(inode_bl->i_sb,
176 "couldn't mark inode #%lu dirty (err %d)",
177 inode_bl->i_ino, err);
178 /* Revert all changes: */
179 swap_inode_data(inode, inode_bl);
180 ext4_mark_inode_dirty(handle, inode);
183 ext4_journal_stop(handle);
184 ext4_double_up_write_data_sem(inode, inode_bl);
187 ext4_inode_resume_unlocked_dio(inode);
188 ext4_inode_resume_unlocked_dio(inode_bl);
189 unlock_two_nondirectories(inode, inode_bl);
194 static int uuid_is_zero(__u8 u[16])
198 for (i = 0; i < 16; i++)
204 static int ext4_ioctl_setflags(struct inode *inode,
207 struct ext4_inode_info *ei = EXT4_I(inode);
208 handle_t *handle = NULL;
209 int err = -EPERM, migrate = 0;
210 struct ext4_iloc iloc;
211 unsigned int oldflags, mask, i;
214 /* Is it quota file? Do not allow user to mess with it */
215 if (IS_NOQUOTA(inode))
218 oldflags = ei->i_flags;
220 /* The JOURNAL_DATA flag is modifiable only by root */
221 jflag = flags & EXT4_JOURNAL_DATA_FL;
224 * The IMMUTABLE and APPEND_ONLY flags can only be changed by
225 * the relevant capability.
227 * This test looks nicer. Thanks to Pauline Middelink
229 if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) {
230 if (!capable(CAP_LINUX_IMMUTABLE))
235 * The JOURNAL_DATA flag can only be changed by
236 * the relevant capability.
238 if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) {
239 if (!capable(CAP_SYS_RESOURCE))
242 if ((flags ^ oldflags) & EXT4_EXTENTS_FL)
245 if (flags & EXT4_EOFBLOCKS_FL) {
246 /* we don't support adding EOFBLOCKS flag */
247 if (!(oldflags & EXT4_EOFBLOCKS_FL)) {
251 } else if (oldflags & EXT4_EOFBLOCKS_FL)
252 ext4_truncate(inode);
254 handle = ext4_journal_start(inode, EXT4_HT_INODE, 1);
255 if (IS_ERR(handle)) {
256 err = PTR_ERR(handle);
260 ext4_handle_sync(handle);
261 err = ext4_reserve_inode_write(handle, inode, &iloc);
265 for (i = 0, mask = 1; i < 32; i++, mask <<= 1) {
266 if (!(mask & EXT4_FL_USER_MODIFIABLE))
269 ext4_set_inode_flag(inode, i);
271 ext4_clear_inode_flag(inode, i);
274 ext4_set_inode_flags(inode);
275 inode->i_ctime = ext4_current_time(inode);
277 err = ext4_mark_iloc_dirty(handle, inode, &iloc);
279 ext4_journal_stop(handle);
283 if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL))
284 err = ext4_change_inode_journal_flag(inode, jflag);
288 if (flags & EXT4_EXTENTS_FL)
289 err = ext4_ext_migrate(inode);
291 err = ext4_ind_migrate(inode);
299 static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
301 struct inode *inode = file_inode(filp);
302 struct super_block *sb = inode->i_sb;
303 struct ext4_inode_info *ei = EXT4_I(inode);
307 struct ext4_iloc iloc;
308 struct ext4_inode *raw_inode;
309 struct dquot *transfer_to[MAXQUOTAS] = { };
311 if (!ext4_has_feature_project(sb)) {
312 if (projid != EXT4_DEF_PROJID)
318 if (EXT4_INODE_SIZE(sb) <= EXT4_GOOD_OLD_INODE_SIZE)
321 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
323 if (projid_eq(kprojid, EXT4_I(inode)->i_projid))
326 err = mnt_want_write_file(filp);
332 /* Is it quota file? Do not allow user to mess with it */
333 if (IS_NOQUOTA(inode))
336 err = ext4_get_inode_loc(inode, &iloc);
340 raw_inode = ext4_raw_inode(&iloc);
341 if (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) {
348 err = dquot_initialize(inode);
352 handle = ext4_journal_start(inode, EXT4_HT_QUOTA,
353 EXT4_QUOTA_INIT_BLOCKS(sb) +
354 EXT4_QUOTA_DEL_BLOCKS(sb) + 3);
355 if (IS_ERR(handle)) {
356 err = PTR_ERR(handle);
360 err = ext4_reserve_inode_write(handle, inode, &iloc);
364 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
365 if (!IS_ERR(transfer_to[PRJQUOTA])) {
366 err = __dquot_transfer(inode, transfer_to);
367 dqput(transfer_to[PRJQUOTA]);
372 EXT4_I(inode)->i_projid = kprojid;
373 inode->i_ctime = ext4_current_time(inode);
375 rc = ext4_mark_iloc_dirty(handle, inode, &iloc);
379 ext4_journal_stop(handle);
382 mnt_drop_write_file(filp);
386 static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
388 if (projid != EXT4_DEF_PROJID)
394 /* Transfer internal flags to xflags */
395 static inline __u32 ext4_iflags_to_xflags(unsigned long iflags)
399 if (iflags & EXT4_SYNC_FL)
400 xflags |= FS_XFLAG_SYNC;
401 if (iflags & EXT4_IMMUTABLE_FL)
402 xflags |= FS_XFLAG_IMMUTABLE;
403 if (iflags & EXT4_APPEND_FL)
404 xflags |= FS_XFLAG_APPEND;
405 if (iflags & EXT4_NODUMP_FL)
406 xflags |= FS_XFLAG_NODUMP;
407 if (iflags & EXT4_NOATIME_FL)
408 xflags |= FS_XFLAG_NOATIME;
409 if (iflags & EXT4_PROJINHERIT_FL)
410 xflags |= FS_XFLAG_PROJINHERIT;
414 /* Transfer xflags flags to internal */
415 static inline unsigned long ext4_xflags_to_iflags(__u32 xflags)
417 unsigned long iflags = 0;
419 if (xflags & FS_XFLAG_SYNC)
420 iflags |= EXT4_SYNC_FL;
421 if (xflags & FS_XFLAG_IMMUTABLE)
422 iflags |= EXT4_IMMUTABLE_FL;
423 if (xflags & FS_XFLAG_APPEND)
424 iflags |= EXT4_APPEND_FL;
425 if (xflags & FS_XFLAG_NODUMP)
426 iflags |= EXT4_NODUMP_FL;
427 if (xflags & FS_XFLAG_NOATIME)
428 iflags |= EXT4_NOATIME_FL;
429 if (xflags & FS_XFLAG_PROJINHERIT)
430 iflags |= EXT4_PROJINHERIT_FL;
435 long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
437 struct inode *inode = file_inode(filp);
438 struct super_block *sb = inode->i_sb;
439 struct ext4_inode_info *ei = EXT4_I(inode);
442 ext4_debug("cmd = %u, arg = %lu\n", cmd, arg);
445 case EXT4_IOC_GETFLAGS:
446 ext4_get_inode_flags(ei);
447 flags = ei->i_flags & EXT4_FL_USER_VISIBLE;
448 return put_user(flags, (int __user *) arg);
449 case EXT4_IOC_SETFLAGS: {
452 if (!inode_owner_or_capable(inode))
455 if (get_user(flags, (int __user *) arg))
458 err = mnt_want_write_file(filp);
462 flags = ext4_mask_flags(inode->i_mode, flags);
465 err = ext4_ioctl_setflags(inode, flags);
467 mnt_drop_write_file(filp);
470 case EXT4_IOC_GETVERSION:
471 case EXT4_IOC_GETVERSION_OLD:
472 return put_user(inode->i_generation, (int __user *) arg);
473 case EXT4_IOC_SETVERSION:
474 case EXT4_IOC_SETVERSION_OLD: {
476 struct ext4_iloc iloc;
480 if (!inode_owner_or_capable(inode))
483 if (ext4_has_metadata_csum(inode->i_sb)) {
484 ext4_warning(sb, "Setting inode version is not "
485 "supported with metadata_csum enabled.");
489 err = mnt_want_write_file(filp);
492 if (get_user(generation, (int __user *) arg)) {
498 handle = ext4_journal_start(inode, EXT4_HT_INODE, 1);
499 if (IS_ERR(handle)) {
500 err = PTR_ERR(handle);
503 err = ext4_reserve_inode_write(handle, inode, &iloc);
505 inode->i_ctime = ext4_current_time(inode);
506 inode->i_generation = generation;
507 err = ext4_mark_iloc_dirty(handle, inode, &iloc);
509 ext4_journal_stop(handle);
514 mnt_drop_write_file(filp);
517 case EXT4_IOC_GROUP_EXTEND: {
518 ext4_fsblk_t n_blocks_count;
521 err = ext4_resize_begin(sb);
525 if (get_user(n_blocks_count, (__u32 __user *)arg)) {
527 goto group_extend_out;
530 if (ext4_has_feature_bigalloc(sb)) {
531 ext4_msg(sb, KERN_ERR,
532 "Online resizing not supported with bigalloc");
534 goto group_extend_out;
537 err = mnt_want_write_file(filp);
539 goto group_extend_out;
541 err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count);
542 if (EXT4_SB(sb)->s_journal) {
543 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
544 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal);
545 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
549 mnt_drop_write_file(filp);
555 case EXT4_IOC_MOVE_EXT: {
556 struct move_extent me;
560 if (!(filp->f_mode & FMODE_READ) ||
561 !(filp->f_mode & FMODE_WRITE))
564 if (copy_from_user(&me,
565 (struct move_extent __user *)arg, sizeof(me)))
569 donor = fdget(me.donor_fd);
573 if (!(donor.file->f_mode & FMODE_WRITE)) {
578 if (ext4_has_feature_bigalloc(sb)) {
579 ext4_msg(sb, KERN_ERR,
580 "Online defrag not supported with bigalloc");
583 } else if (IS_DAX(inode)) {
584 ext4_msg(sb, KERN_ERR,
585 "Online defrag not supported with DAX");
590 err = mnt_want_write_file(filp);
594 err = ext4_move_extents(filp, donor.file, me.orig_start,
595 me.donor_start, me.len, &me.moved_len);
596 mnt_drop_write_file(filp);
598 if (copy_to_user((struct move_extent __user *)arg,
606 case EXT4_IOC_GROUP_ADD: {
607 struct ext4_new_group_data input;
610 err = ext4_resize_begin(sb);
614 if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg,
620 if (ext4_has_feature_bigalloc(sb)) {
621 ext4_msg(sb, KERN_ERR,
622 "Online resizing not supported with bigalloc");
627 err = mnt_want_write_file(filp);
631 err = ext4_group_add(sb, &input);
632 if (EXT4_SB(sb)->s_journal) {
633 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
634 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal);
635 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
639 mnt_drop_write_file(filp);
640 if (!err && ext4_has_group_desc_csum(sb) &&
641 test_opt(sb, INIT_INODE_TABLE))
642 err = ext4_register_li_request(sb, input.group);
648 case EXT4_IOC_MIGRATE:
651 if (!inode_owner_or_capable(inode))
654 err = mnt_want_write_file(filp);
658 * inode_mutex prevent write and truncate on the file.
659 * Read still goes through. We take i_data_sem in
660 * ext4_ext_swap_inode_data before we switch the
661 * inode format to prevent read.
664 err = ext4_ext_migrate(inode);
665 inode_unlock((inode));
666 mnt_drop_write_file(filp);
670 case EXT4_IOC_ALLOC_DA_BLKS:
673 if (!inode_owner_or_capable(inode))
676 err = mnt_want_write_file(filp);
679 err = ext4_alloc_da_blocks(inode);
680 mnt_drop_write_file(filp);
684 case EXT4_IOC_SWAP_BOOT:
687 if (!(filp->f_mode & FMODE_WRITE))
689 err = mnt_want_write_file(filp);
692 err = swap_inode_boot_loader(sb, inode);
693 mnt_drop_write_file(filp);
697 case EXT4_IOC_RESIZE_FS: {
698 ext4_fsblk_t n_blocks_count;
699 int err = 0, err2 = 0;
700 ext4_group_t o_group = EXT4_SB(sb)->s_groups_count;
702 if (ext4_has_feature_bigalloc(sb)) {
703 ext4_msg(sb, KERN_ERR,
704 "Online resizing not (yet) supported with bigalloc");
708 if (copy_from_user(&n_blocks_count, (__u64 __user *)arg,
713 err = ext4_resize_begin(sb);
717 err = mnt_want_write_file(filp);
721 err = ext4_resize_fs(sb, n_blocks_count);
722 if (EXT4_SB(sb)->s_journal) {
723 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
724 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal);
725 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
729 mnt_drop_write_file(filp);
730 if (!err && (o_group < EXT4_SB(sb)->s_groups_count) &&
731 ext4_has_group_desc_csum(sb) &&
732 test_opt(sb, INIT_INODE_TABLE))
733 err = ext4_register_li_request(sb, o_group);
742 struct request_queue *q = bdev_get_queue(sb->s_bdev);
743 struct fstrim_range range;
746 if (!capable(CAP_SYS_ADMIN))
749 if (!blk_queue_discard(q))
753 * We haven't replayed the journal, so we cannot use our
754 * block-bitmap-guided storage zapping commands.
756 if (test_opt(sb, NOLOAD) && ext4_has_feature_journal(sb))
759 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
763 ret = ext4_trim_fs(sb, &range);
767 if (copy_to_user((struct fstrim_range __user *)arg, &range,
773 case EXT4_IOC_PRECACHE_EXTENTS:
774 return ext4_ext_precache(inode);
776 case EXT4_IOC_SET_ENCRYPTION_POLICY:
777 if (!ext4_has_feature_encrypt(sb))
779 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
781 case EXT4_IOC_GET_ENCRYPTION_PWSALT: {
783 struct ext4_sb_info *sbi = EXT4_SB(sb);
786 if (!ext4_sb_has_crypto(sb))
788 if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) {
789 err = mnt_want_write_file(filp);
792 handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1);
793 if (IS_ERR(handle)) {
794 err = PTR_ERR(handle);
795 goto pwsalt_err_exit;
797 err = ext4_journal_get_write_access(handle, sbi->s_sbh);
799 goto pwsalt_err_journal;
800 lock_buffer(sbi->s_sbh);
801 generate_random_uuid(sbi->s_es->s_encrypt_pw_salt);
802 ext4_superblock_csum_set(sb);
803 unlock_buffer(sbi->s_sbh);
804 err = ext4_handle_dirty_metadata(handle, NULL,
807 err2 = ext4_journal_stop(handle);
811 mnt_drop_write_file(filp);
815 if (copy_to_user((void __user *) arg,
816 sbi->s_es->s_encrypt_pw_salt, 16))
820 case EXT4_IOC_GET_ENCRYPTION_POLICY:
821 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
823 case EXT4_IOC_FSGETXATTR:
827 memset(&fa, 0, sizeof(struct fsxattr));
828 ext4_get_inode_flags(ei);
829 fa.fsx_xflags = ext4_iflags_to_xflags(ei->i_flags & EXT4_FL_USER_VISIBLE);
831 if (ext4_has_feature_project(inode->i_sb)) {
832 fa.fsx_projid = (__u32)from_kprojid(&init_user_ns,
833 EXT4_I(inode)->i_projid);
836 if (copy_to_user((struct fsxattr __user *)arg,
841 case EXT4_IOC_FSSETXATTR:
846 if (copy_from_user(&fa, (struct fsxattr __user *)arg,
850 /* Make sure caller has proper permission */
851 if (!inode_owner_or_capable(inode))
854 err = mnt_want_write_file(filp);
858 flags = ext4_xflags_to_iflags(fa.fsx_xflags);
859 flags = ext4_mask_flags(inode->i_mode, flags);
862 flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) |
863 (flags & EXT4_FL_XFLAG_VISIBLE);
864 err = ext4_ioctl_setflags(inode, flags);
866 mnt_drop_write_file(filp);
870 err = ext4_ioctl_setproject(filp, fa.fsx_projid);
882 long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
884 /* These are just misnamed, they actually get/put from/to user an int */
886 case EXT4_IOC32_GETFLAGS:
887 cmd = EXT4_IOC_GETFLAGS;
889 case EXT4_IOC32_SETFLAGS:
890 cmd = EXT4_IOC_SETFLAGS;
892 case EXT4_IOC32_GETVERSION:
893 cmd = EXT4_IOC_GETVERSION;
895 case EXT4_IOC32_SETVERSION:
896 cmd = EXT4_IOC_SETVERSION;
898 case EXT4_IOC32_GROUP_EXTEND:
899 cmd = EXT4_IOC_GROUP_EXTEND;
901 case EXT4_IOC32_GETVERSION_OLD:
902 cmd = EXT4_IOC_GETVERSION_OLD;
904 case EXT4_IOC32_SETVERSION_OLD:
905 cmd = EXT4_IOC_SETVERSION_OLD;
907 case EXT4_IOC32_GETRSVSZ:
908 cmd = EXT4_IOC_GETRSVSZ;
910 case EXT4_IOC32_SETRSVSZ:
911 cmd = EXT4_IOC_SETRSVSZ;
913 case EXT4_IOC32_GROUP_ADD: {
914 struct compat_ext4_new_group_input __user *uinput;
915 struct ext4_new_group_input input;
919 uinput = compat_ptr(arg);
920 err = get_user(input.group, &uinput->group);
921 err |= get_user(input.block_bitmap, &uinput->block_bitmap);
922 err |= get_user(input.inode_bitmap, &uinput->inode_bitmap);
923 err |= get_user(input.inode_table, &uinput->inode_table);
924 err |= get_user(input.blocks_count, &uinput->blocks_count);
925 err |= get_user(input.reserved_blocks,
926 &uinput->reserved_blocks);
931 err = ext4_ioctl(file, EXT4_IOC_GROUP_ADD,
932 (unsigned long) &input);
936 case EXT4_IOC_MOVE_EXT:
937 case EXT4_IOC_RESIZE_FS:
938 case EXT4_IOC_PRECACHE_EXTENTS:
939 case EXT4_IOC_SET_ENCRYPTION_POLICY:
940 case EXT4_IOC_GET_ENCRYPTION_PWSALT:
941 case EXT4_IOC_GET_ENCRYPTION_POLICY:
946 return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg));