blob: 15ca15cb9f2870cf8e1f9454bbd79465fdef3443 [file] [log] [blame]
Dave Kleikampac27a0e2006-10-11 01:20:50 -07001/*
Mingming Cao617ba132006-10-11 01:20:53 -07002 * linux/fs/ext4/ioctl.c
Dave Kleikampac27a0e2006-10-11 01:20:50 -07003 *
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>
Dave Kleikampac27a0e2006-10-11 01:20:50 -070011#include <linux/capability.h>
Dave Kleikampac27a0e2006-10-11 01:20:50 -070012#include <linux/time.h>
13#include <linux/compat.h>
Dave Hansen42a74f22008-02-15 14:37:46 -080014#include <linux/mount.h>
Akira Fujita748de672009-06-17 19:24:03 -040015#include <linux/file.h>
Li Xi9b7365f2016-01-08 16:01:22 -050016#include <linux/quotaops.h>
Andy Shevchenko8da4b8c2016-05-20 17:01:00 -070017#include <linux/uuid.h>
Dave Kleikampac27a0e2006-10-11 01:20:50 -070018#include <asm/uaccess.h>
Christoph Hellwig3dcf5452008-04-29 18:13:32 -040019#include "ext4_jbd2.h"
20#include "ext4.h"
Dave Kleikampac27a0e2006-10-11 01:20:50 -070021
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -040022/**
23 * Swap memory between @a and @b for @len bytes.
24 *
25 * @a: pointer to first memory area
26 * @b: pointer to second memory area
27 * @len: number of bytes to swap
28 *
29 */
30static void memswap(void *a, void *b, size_t len)
31{
32 unsigned char *ap, *bp;
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -040033
34 ap = (unsigned char *)a;
35 bp = (unsigned char *)b;
36 while (len-- > 0) {
Fabian Frederick4b7e2db2015-06-12 23:46:33 -040037 swap(*ap, *bp);
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -040038 ap++;
39 bp++;
40 }
41}
42
43/**
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.
47 *
48 * Therefore you have to make sure, that calling this method twice
49 * will revert all changes.
50 *
51 * @inode1: pointer to first inode
52 * @inode2: pointer to second inode
53 */
54static void swap_inode_data(struct inode *inode1, struct inode *inode2)
55{
56 loff_t isize;
57 struct ext4_inode_info *ei1;
58 struct ext4_inode_info *ei2;
59
60 ei1 = EXT4_I(inode1);
61 ei2 = EXT4_I(inode2);
62
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));
71
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));
Theodore Ts'ocde2d7a2013-08-12 09:29:30 -040075 ext4_es_remove_extent(inode1, 0, EXT_MAX_BLOCKS);
76 ext4_es_remove_extent(inode2, 0, EXT_MAX_BLOCKS);
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -040077
78 isize = i_size_read(inode1);
79 i_size_write(inode1, i_size_read(inode2));
80 i_size_write(inode2, isize);
81}
82
83/**
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.
87 *
88 * @sb: the super block of the filesystem
89 * @inode: the inode to swap with EXT4_BOOT_LOADER_INO
90 *
91 */
92static long swap_inode_boot_loader(struct super_block *sb,
93 struct inode *inode)
94{
95 handle_t *handle;
96 int err;
97 struct inode *inode_bl;
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -040098 struct ext4_inode_info *ei_bl;
jon ernstd7092ae2014-01-11 13:26:56 -050099 struct ext4_sb_info *sbi = EXT4_SB(sb);
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400100
Theodore Ts'od8558a22014-02-17 20:44:36 -0500101 if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode))
102 return -EINVAL;
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400103
Theodore Ts'od8558a22014-02-17 20:44:36 -0500104 if (!inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN))
105 return -EPERM;
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400106
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400107 inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO);
Theodore Ts'od8558a22014-02-17 20:44:36 -0500108 if (IS_ERR(inode_bl))
109 return PTR_ERR(inode_bl);
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400110 ei_bl = EXT4_I(inode_bl);
111
112 filemap_flush(inode->i_mapping);
113 filemap_flush(inode_bl->i_mapping);
114
115 /* Protect orig inodes against a truncate and make sure,
116 * that only 1 swap_inode_boot_loader is running. */
J. Bruce Fields375e2892012-04-18 15:16:33 -0400117 lock_two_nondirectories(inode, inode_bl);
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400118
119 truncate_inode_pages(&inode->i_data, 0);
120 truncate_inode_pages(&inode_bl->i_data, 0);
121
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);
127
128 handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2);
129 if (IS_ERR(handle)) {
130 err = -EINVAL;
Zheng Liu30d29b12014-02-12 11:48:31 -0500131 goto journal_err_out;
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400132 }
133
134 /* Protect extent tree against block allocations via delalloc */
135 ext4_double_down_write_data_sem(inode, inode_bl);
136
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;
143 ei_bl->i_flags = 0;
144 inode_bl->i_version = 1;
145 i_size_write(inode_bl, 0);
146 inode_bl->i_mode = S_IFREG;
Darrick J. Wonge2b911c2015-10-17 16:18:43 -0400147 if (ext4_has_feature_extents(sb)) {
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400148 ext4_set_inode_flag(inode_bl, EXT4_INODE_EXTENTS);
149 ext4_ext_tree_init(handle, inode_bl);
150 } else
151 memset(ei_bl->i_data, 0, sizeof(ei_bl->i_data));
152 }
153
154 swap_inode_data(inode, inode_bl);
155
156 inode->i_ctime = inode_bl->i_ctime = ext4_current_time(inode);
157
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);
162
163 ext4_discard_preallocations(inode);
164
165 err = ext4_mark_inode_dirty(handle, inode);
166 if (err < 0) {
167 ext4_warning(inode->i_sb,
168 "couldn't mark inode #%lu dirty (err %d)",
169 inode->i_ino, err);
170 /* Revert all changes: */
171 swap_inode_data(inode, inode_bl);
172 } else {
173 err = ext4_mark_inode_dirty(handle, inode_bl);
174 if (err < 0) {
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);
181 }
182 }
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400183 ext4_journal_stop(handle);
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400184 ext4_double_up_write_data_sem(inode, inode_bl);
185
Zheng Liu30d29b12014-02-12 11:48:31 -0500186journal_err_out:
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400187 ext4_inode_resume_unlocked_dio(inode);
188 ext4_inode_resume_unlocked_dio(inode_bl);
J. Bruce Fields375e2892012-04-18 15:16:33 -0400189 unlock_two_nondirectories(inode, inode_bl);
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400190 iput(inode_bl);
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400191 return err;
192}
193
Hyojun Kim63da4202017-10-06 17:10:08 -0700194#ifdef CONFIG_EXT4_FS_ENCRYPTION
Michael Halcrow9bd82122015-04-11 07:48:01 -0400195static int uuid_is_zero(__u8 u[16])
196{
197 int i;
198
199 for (i = 0; i < 16; i++)
200 if (u[i])
201 return 0;
202 return 1;
203}
Hyojun Kim63da4202017-10-06 17:10:08 -0700204#endif
Michael Halcrow9bd82122015-04-11 07:48:01 -0400205
Li Xi9b7365f2016-01-08 16:01:22 -0500206static int ext4_ioctl_setflags(struct inode *inode,
207 unsigned int flags)
208{
209 struct ext4_inode_info *ei = EXT4_I(inode);
210 handle_t *handle = NULL;
Anton Protopopovfdde3682016-02-11 23:57:21 -0500211 int err = -EPERM, migrate = 0;
Li Xi9b7365f2016-01-08 16:01:22 -0500212 struct ext4_iloc iloc;
213 unsigned int oldflags, mask, i;
214 unsigned int jflag;
215
216 /* Is it quota file? Do not allow user to mess with it */
217 if (IS_NOQUOTA(inode))
218 goto flags_out;
219
220 oldflags = ei->i_flags;
221
222 /* The JOURNAL_DATA flag is modifiable only by root */
223 jflag = flags & EXT4_JOURNAL_DATA_FL;
224
225 /*
226 * The IMMUTABLE and APPEND_ONLY flags can only be changed by
227 * the relevant capability.
228 *
229 * This test looks nicer. Thanks to Pauline Middelink
230 */
231 if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) {
232 if (!capable(CAP_LINUX_IMMUTABLE))
233 goto flags_out;
234 }
235
236 /*
237 * The JOURNAL_DATA flag can only be changed by
238 * the relevant capability.
239 */
240 if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) {
241 if (!capable(CAP_SYS_RESOURCE))
242 goto flags_out;
243 }
244 if ((flags ^ oldflags) & EXT4_EXTENTS_FL)
245 migrate = 1;
246
247 if (flags & EXT4_EOFBLOCKS_FL) {
248 /* we don't support adding EOFBLOCKS flag */
249 if (!(oldflags & EXT4_EOFBLOCKS_FL)) {
250 err = -EOPNOTSUPP;
251 goto flags_out;
252 }
253 } else if (oldflags & EXT4_EOFBLOCKS_FL)
254 ext4_truncate(inode);
255
256 handle = ext4_journal_start(inode, EXT4_HT_INODE, 1);
257 if (IS_ERR(handle)) {
258 err = PTR_ERR(handle);
259 goto flags_out;
260 }
261 if (IS_SYNC(inode))
262 ext4_handle_sync(handle);
263 err = ext4_reserve_inode_write(handle, inode, &iloc);
264 if (err)
265 goto flags_err;
266
267 for (i = 0, mask = 1; i < 32; i++, mask <<= 1) {
268 if (!(mask & EXT4_FL_USER_MODIFIABLE))
269 continue;
270 if (mask & flags)
271 ext4_set_inode_flag(inode, i);
272 else
273 ext4_clear_inode_flag(inode, i);
274 }
275
276 ext4_set_inode_flags(inode);
277 inode->i_ctime = ext4_current_time(inode);
278
279 err = ext4_mark_iloc_dirty(handle, inode, &iloc);
280flags_err:
281 ext4_journal_stop(handle);
282 if (err)
283 goto flags_out;
284
285 if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL))
286 err = ext4_change_inode_journal_flag(inode, jflag);
287 if (err)
288 goto flags_out;
289 if (migrate) {
290 if (flags & EXT4_EXTENTS_FL)
291 err = ext4_ext_migrate(inode);
292 else
293 err = ext4_ind_migrate(inode);
294 }
295
296flags_out:
297 return err;
298}
299
300#ifdef CONFIG_QUOTA
301static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
302{
303 struct inode *inode = file_inode(filp);
304 struct super_block *sb = inode->i_sb;
305 struct ext4_inode_info *ei = EXT4_I(inode);
306 int err, rc;
307 handle_t *handle;
308 kprojid_t kprojid;
309 struct ext4_iloc iloc;
310 struct ext4_inode *raw_inode;
Wang Shilong079788d2016-07-05 21:33:52 -0400311 struct dquot *transfer_to[MAXQUOTAS] = { };
Li Xi9b7365f2016-01-08 16:01:22 -0500312
Kaho Ng0b7b7772016-09-05 23:11:58 -0400313 if (!ext4_has_feature_project(sb)) {
Li Xi9b7365f2016-01-08 16:01:22 -0500314 if (projid != EXT4_DEF_PROJID)
315 return -EOPNOTSUPP;
316 else
317 return 0;
318 }
319
320 if (EXT4_INODE_SIZE(sb) <= EXT4_GOOD_OLD_INODE_SIZE)
321 return -EOPNOTSUPP;
322
323 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
324
325 if (projid_eq(kprojid, EXT4_I(inode)->i_projid))
326 return 0;
327
328 err = mnt_want_write_file(filp);
329 if (err)
330 return err;
331
332 err = -EPERM;
Al Viro59551022016-01-22 15:40:57 -0500333 inode_lock(inode);
Li Xi9b7365f2016-01-08 16:01:22 -0500334 /* Is it quota file? Do not allow user to mess with it */
335 if (IS_NOQUOTA(inode))
336 goto out_unlock;
337
338 err = ext4_get_inode_loc(inode, &iloc);
339 if (err)
340 goto out_unlock;
341
342 raw_inode = ext4_raw_inode(&iloc);
343 if (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) {
344 err = -EOVERFLOW;
345 brelse(iloc.bh);
346 goto out_unlock;
347 }
348 brelse(iloc.bh);
349
350 dquot_initialize(inode);
351
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);
357 goto out_unlock;
358 }
359
360 err = ext4_reserve_inode_write(handle, inode, &iloc);
361 if (err)
362 goto out_stop;
363
Wang Shilong079788d2016-07-05 21:33:52 -0400364 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]);
368 if (err)
369 goto out_dirty;
Li Xi9b7365f2016-01-08 16:01:22 -0500370 }
Wang Shilong079788d2016-07-05 21:33:52 -0400371
Li Xi9b7365f2016-01-08 16:01:22 -0500372 EXT4_I(inode)->i_projid = kprojid;
373 inode->i_ctime = ext4_current_time(inode);
374out_dirty:
375 rc = ext4_mark_iloc_dirty(handle, inode, &iloc);
376 if (!err)
377 err = rc;
378out_stop:
379 ext4_journal_stop(handle);
380out_unlock:
Al Viro59551022016-01-22 15:40:57 -0500381 inode_unlock(inode);
Li Xi9b7365f2016-01-08 16:01:22 -0500382 mnt_drop_write_file(filp);
383 return err;
384}
385#else
386static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
387{
388 if (projid != EXT4_DEF_PROJID)
389 return -EOPNOTSUPP;
390 return 0;
391}
392#endif
393
394/* Transfer internal flags to xflags */
395static inline __u32 ext4_iflags_to_xflags(unsigned long iflags)
396{
397 __u32 xflags = 0;
398
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;
411 return xflags;
412}
413
414/* Transfer xflags flags to internal */
415static inline unsigned long ext4_xflags_to_iflags(__u32 xflags)
416{
417 unsigned long iflags = 0;
418
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;
431
432 return iflags;
433}
434
Andi Kleen5cdd7b22008-04-29 22:03:54 -0400435long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700436{
Al Viro496ad9a2013-01-23 17:07:38 -0500437 struct inode *inode = file_inode(filp);
Theodore Ts'obab08ab2011-09-09 18:36:51 -0400438 struct super_block *sb = inode->i_sb;
Mingming Cao617ba132006-10-11 01:20:53 -0700439 struct ext4_inode_info *ei = EXT4_I(inode);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700440 unsigned int flags;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700441
Theodore Ts'oaf5bc922008-09-08 22:25:24 -0400442 ext4_debug("cmd = %u, arg = %lu\n", cmd, arg);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700443
444 switch (cmd) {
Mingming Cao617ba132006-10-11 01:20:53 -0700445 case EXT4_IOC_GETFLAGS:
Jan Karaff9ddf72007-07-18 09:24:20 -0400446 ext4_get_inode_flags(ei);
Mingming Cao617ba132006-10-11 01:20:53 -0700447 flags = ei->i_flags & EXT4_FL_USER_VISIBLE;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700448 return put_user(flags, (int __user *) arg);
Mingming Cao617ba132006-10-11 01:20:53 -0700449 case EXT4_IOC_SETFLAGS: {
Li Xi9b7365f2016-01-08 16:01:22 -0500450 int err;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700451
Serge E. Hallyn2e149672011-03-23 16:43:26 -0700452 if (!inode_owner_or_capable(inode))
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700453 return -EACCES;
454
455 if (get_user(flags, (int __user *) arg))
456 return -EFAULT;
457
Al Viroa561be72011-11-23 11:57:51 -0500458 err = mnt_want_write_file(filp);
Dave Hansen42a74f22008-02-15 14:37:46 -0800459 if (err)
460 return err;
461
Duane Griffin2dc6b0d2009-02-15 18:09:20 -0500462 flags = ext4_mask_flags(inode->i_mode, flags);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700463
Al Viro59551022016-01-22 15:40:57 -0500464 inode_lock(inode);
Li Xi9b7365f2016-01-08 16:01:22 -0500465 err = ext4_ioctl_setflags(inode, flags);
Al Viro59551022016-01-22 15:40:57 -0500466 inode_unlock(inode);
Al Viro2a79f172011-12-09 08:06:57 -0500467 mnt_drop_write_file(filp);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700468 return err;
469 }
Mingming Cao617ba132006-10-11 01:20:53 -0700470 case EXT4_IOC_GETVERSION:
471 case EXT4_IOC_GETVERSION_OLD:
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700472 return put_user(inode->i_generation, (int __user *) arg);
Mingming Cao617ba132006-10-11 01:20:53 -0700473 case EXT4_IOC_SETVERSION:
474 case EXT4_IOC_SETVERSION_OLD: {
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700475 handle_t *handle;
Mingming Cao617ba132006-10-11 01:20:53 -0700476 struct ext4_iloc iloc;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700477 __u32 generation;
478 int err;
479
Serge E. Hallyn2e149672011-03-23 16:43:26 -0700480 if (!inode_owner_or_capable(inode))
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700481 return -EPERM;
Dave Hansen42a74f22008-02-15 14:37:46 -0800482
Dmitry Monakhov9aa5d322014-10-13 03:36:16 -0400483 if (ext4_has_metadata_csum(inode->i_sb)) {
Darrick J. Wong814525f2012-04-29 18:31:10 -0400484 ext4_warning(sb, "Setting inode version is not "
485 "supported with metadata_csum enabled.");
486 return -ENOTTY;
487 }
488
Al Viroa561be72011-11-23 11:57:51 -0500489 err = mnt_want_write_file(filp);
Dave Hansen42a74f22008-02-15 14:37:46 -0800490 if (err)
491 return err;
492 if (get_user(generation, (int __user *) arg)) {
493 err = -EFAULT;
494 goto setversion_out;
495 }
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700496
Al Viro59551022016-01-22 15:40:57 -0500497 inode_lock(inode);
Theodore Ts'o9924a922013-02-08 21:59:22 -0500498 handle = ext4_journal_start(inode, EXT4_HT_INODE, 1);
Dave Hansen42a74f22008-02-15 14:37:46 -0800499 if (IS_ERR(handle)) {
500 err = PTR_ERR(handle);
Djalal Harouni6c2155b2012-01-03 02:31:52 +0100501 goto unlock_out;
Dave Hansen42a74f22008-02-15 14:37:46 -0800502 }
Mingming Cao617ba132006-10-11 01:20:53 -0700503 err = ext4_reserve_inode_write(handle, inode, &iloc);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700504 if (err == 0) {
Kalpak Shahef7f3832007-07-18 09:15:20 -0400505 inode->i_ctime = ext4_current_time(inode);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700506 inode->i_generation = generation;
Mingming Cao617ba132006-10-11 01:20:53 -0700507 err = ext4_mark_iloc_dirty(handle, inode, &iloc);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700508 }
Mingming Cao617ba132006-10-11 01:20:53 -0700509 ext4_journal_stop(handle);
Djalal Harouni6c2155b2012-01-03 02:31:52 +0100510
511unlock_out:
Al Viro59551022016-01-22 15:40:57 -0500512 inode_unlock(inode);
Dave Hansen42a74f22008-02-15 14:37:46 -0800513setversion_out:
Al Viro2a79f172011-12-09 08:06:57 -0500514 mnt_drop_write_file(filp);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700515 return err;
516 }
Mingming Cao617ba132006-10-11 01:20:53 -0700517 case EXT4_IOC_GROUP_EXTEND: {
518 ext4_fsblk_t n_blocks_count;
Peng Taoac046f12009-07-13 09:30:17 -0400519 int err, err2=0;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700520
Yongqiang Yang8f82f842011-07-26 21:35:44 -0400521 err = ext4_resize_begin(sb);
522 if (err)
523 return err;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700524
Djalal Harouni014a1772012-01-04 17:09:52 -0500525 if (get_user(n_blocks_count, (__u32 __user *)arg)) {
526 err = -EFAULT;
527 goto group_extend_out;
528 }
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700529
Darrick J. Wonge2b911c2015-10-17 16:18:43 -0400530 if (ext4_has_feature_bigalloc(sb)) {
Theodore Ts'obab08ab2011-09-09 18:36:51 -0400531 ext4_msg(sb, KERN_ERR,
532 "Online resizing not supported with bigalloc");
Djalal Harouni014a1772012-01-04 17:09:52 -0500533 err = -EOPNOTSUPP;
534 goto group_extend_out;
Theodore Ts'obab08ab2011-09-09 18:36:51 -0400535 }
536
Al Viroa561be72011-11-23 11:57:51 -0500537 err = mnt_want_write_file(filp);
Dave Hansen42a74f22008-02-15 14:37:46 -0800538 if (err)
Djalal Harouni014a1772012-01-04 17:09:52 -0500539 goto group_extend_out;
Dave Hansen42a74f22008-02-15 14:37:46 -0800540
Mingming Cao617ba132006-10-11 01:20:53 -0700541 err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count);
Peng Taoac046f12009-07-13 09:30:17 -0400542 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);
546 }
Hidehiro Kawai7ffe1ea2008-10-10 20:29:21 -0400547 if (err == 0)
548 err = err2;
Al Viro2a79f172011-12-09 08:06:57 -0500549 mnt_drop_write_file(filp);
Djalal Harouni014a1772012-01-04 17:09:52 -0500550group_extend_out:
Yongqiang Yang8f82f842011-07-26 21:35:44 -0400551 ext4_resize_end(sb);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700552 return err;
553 }
Akira Fujita748de672009-06-17 19:24:03 -0400554
555 case EXT4_IOC_MOVE_EXT: {
556 struct move_extent me;
Al Viro2903ff02012-08-28 12:52:22 -0400557 struct fd donor;
558 int err;
Akira Fujita748de672009-06-17 19:24:03 -0400559
Akira Fujita4a585792009-12-06 23:38:31 -0500560 if (!(filp->f_mode & FMODE_READ) ||
561 !(filp->f_mode & FMODE_WRITE))
562 return -EBADF;
563
Akira Fujita748de672009-06-17 19:24:03 -0400564 if (copy_from_user(&me,
565 (struct move_extent __user *)arg, sizeof(me)))
566 return -EFAULT;
Akira Fujita4a585792009-12-06 23:38:31 -0500567 me.moved_len = 0;
Akira Fujita748de672009-06-17 19:24:03 -0400568
Al Viro2903ff02012-08-28 12:52:22 -0400569 donor = fdget(me.donor_fd);
570 if (!donor.file)
Akira Fujita748de672009-06-17 19:24:03 -0400571 return -EBADF;
572
Al Viro2903ff02012-08-28 12:52:22 -0400573 if (!(donor.file->f_mode & FMODE_WRITE)) {
Akira Fujita4a585792009-12-06 23:38:31 -0500574 err = -EBADF;
575 goto mext_out;
Akira Fujita748de672009-06-17 19:24:03 -0400576 }
577
Darrick J. Wonge2b911c2015-10-17 16:18:43 -0400578 if (ext4_has_feature_bigalloc(sb)) {
Theodore Ts'obab08ab2011-09-09 18:36:51 -0400579 ext4_msg(sb, KERN_ERR,
580 "Online defrag not supported with bigalloc");
Al Viro399c9b82012-08-26 21:00:03 -0400581 err = -EOPNOTSUPP;
582 goto mext_out;
Ross Zwisler73f34a52016-02-26 15:19:49 -0800583 } else if (IS_DAX(inode)) {
584 ext4_msg(sb, KERN_ERR,
585 "Online defrag not supported with DAX");
586 err = -EOPNOTSUPP;
587 goto mext_out;
Theodore Ts'obab08ab2011-09-09 18:36:51 -0400588 }
589
Al Viroa561be72011-11-23 11:57:51 -0500590 err = mnt_want_write_file(filp);
Akira Fujita4a585792009-12-06 23:38:31 -0500591 if (err)
592 goto mext_out;
593
Al Viro2903ff02012-08-28 12:52:22 -0400594 err = ext4_move_extents(filp, donor.file, me.orig_start,
Akira Fujita748de672009-06-17 19:24:03 -0400595 me.donor_start, me.len, &me.moved_len);
Al Viro2a79f172011-12-09 08:06:57 -0500596 mnt_drop_write_file(filp);
Akira Fujita748de672009-06-17 19:24:03 -0400597
Theodore Ts'o60e66792010-05-17 07:00:00 -0400598 if (copy_to_user((struct move_extent __user *)arg,
Akira Fujitac437b272010-03-04 00:39:24 -0500599 &me, sizeof(me)))
Akira Fujita4a585792009-12-06 23:38:31 -0500600 err = -EFAULT;
601mext_out:
Al Viro2903ff02012-08-28 12:52:22 -0400602 fdput(donor);
Akira Fujita748de672009-06-17 19:24:03 -0400603 return err;
604 }
605
Mingming Cao617ba132006-10-11 01:20:53 -0700606 case EXT4_IOC_GROUP_ADD: {
607 struct ext4_new_group_data input;
Peng Taoac046f12009-07-13 09:30:17 -0400608 int err, err2=0;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700609
Yongqiang Yang8f82f842011-07-26 21:35:44 -0400610 err = ext4_resize_begin(sb);
611 if (err)
612 return err;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700613
Mingming Cao617ba132006-10-11 01:20:53 -0700614 if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg,
Djalal Harouni014a1772012-01-04 17:09:52 -0500615 sizeof(input))) {
616 err = -EFAULT;
617 goto group_add_out;
618 }
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700619
Darrick J. Wonge2b911c2015-10-17 16:18:43 -0400620 if (ext4_has_feature_bigalloc(sb)) {
Theodore Ts'obab08ab2011-09-09 18:36:51 -0400621 ext4_msg(sb, KERN_ERR,
622 "Online resizing not supported with bigalloc");
Djalal Harouni014a1772012-01-04 17:09:52 -0500623 err = -EOPNOTSUPP;
624 goto group_add_out;
Theodore Ts'obab08ab2011-09-09 18:36:51 -0400625 }
626
Al Viroa561be72011-11-23 11:57:51 -0500627 err = mnt_want_write_file(filp);
Dave Hansen42a74f22008-02-15 14:37:46 -0800628 if (err)
Djalal Harouni014a1772012-01-04 17:09:52 -0500629 goto group_add_out;
Dave Hansen42a74f22008-02-15 14:37:46 -0800630
Mingming Cao617ba132006-10-11 01:20:53 -0700631 err = ext4_group_add(sb, &input);
Peng Taoac046f12009-07-13 09:30:17 -0400632 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);
636 }
Hidehiro Kawai7ffe1ea2008-10-10 20:29:21 -0400637 if (err == 0)
638 err = err2;
Al Viro2a79f172011-12-09 08:06:57 -0500639 mnt_drop_write_file(filp);
Theodore Ts'o7f511862013-01-13 08:41:45 -0500640 if (!err && ext4_has_group_desc_csum(sb) &&
641 test_opt(sb, INIT_INODE_TABLE))
642 err = ext4_register_li_request(sb, input.group);
Djalal Harouni014a1772012-01-04 17:09:52 -0500643group_add_out:
Yongqiang Yang8f82f842011-07-26 21:35:44 -0400644 ext4_resize_end(sb);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700645 return err;
646 }
647
Aneesh Kumar K.Vc14c6fd2008-01-28 23:58:26 -0500648 case EXT4_IOC_MIGRATE:
Aneesh Kumar K.V2a43a872008-09-13 12:52:26 -0400649 {
650 int err;
Serge E. Hallyn2e149672011-03-23 16:43:26 -0700651 if (!inode_owner_or_capable(inode))
Aneesh Kumar K.V2a43a872008-09-13 12:52:26 -0400652 return -EACCES;
653
Al Viroa561be72011-11-23 11:57:51 -0500654 err = mnt_want_write_file(filp);
Aneesh Kumar K.V2a43a872008-09-13 12:52:26 -0400655 if (err)
656 return err;
657 /*
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.
662 */
Al Viro59551022016-01-22 15:40:57 -0500663 inode_lock((inode));
Aneesh Kumar K.V2a43a872008-09-13 12:52:26 -0400664 err = ext4_ext_migrate(inode);
Al Viro59551022016-01-22 15:40:57 -0500665 inode_unlock((inode));
Al Viro2a79f172011-12-09 08:06:57 -0500666 mnt_drop_write_file(filp);
Aneesh Kumar K.V2a43a872008-09-13 12:52:26 -0400667 return err;
668 }
Aneesh Kumar K.Vc14c6fd2008-01-28 23:58:26 -0500669
Theodore Ts'occd25062009-02-26 01:04:07 -0500670 case EXT4_IOC_ALLOC_DA_BLKS:
671 {
672 int err;
Serge E. Hallyn2e149672011-03-23 16:43:26 -0700673 if (!inode_owner_or_capable(inode))
Theodore Ts'occd25062009-02-26 01:04:07 -0500674 return -EACCES;
675
Al Viroa561be72011-11-23 11:57:51 -0500676 err = mnt_want_write_file(filp);
Theodore Ts'occd25062009-02-26 01:04:07 -0500677 if (err)
678 return err;
679 err = ext4_alloc_da_blocks(inode);
Al Viro2a79f172011-12-09 08:06:57 -0500680 mnt_drop_write_file(filp);
Theodore Ts'occd25062009-02-26 01:04:07 -0500681 return err;
682 }
683
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400684 case EXT4_IOC_SWAP_BOOT:
Dmitry Monakhov3e67cfad22014-10-03 12:47:23 -0400685 {
686 int err;
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400687 if (!(filp->f_mode & FMODE_WRITE))
688 return -EBADF;
Dmitry Monakhov3e67cfad22014-10-03 12:47:23 -0400689 err = mnt_want_write_file(filp);
690 if (err)
691 return err;
692 err = swap_inode_boot_loader(sb, inode);
693 mnt_drop_write_file(filp);
694 return err;
695 }
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400696
Yongqiang Yang19c52462012-01-04 17:09:44 -0500697 case EXT4_IOC_RESIZE_FS: {
698 ext4_fsblk_t n_blocks_count;
Yongqiang Yang19c52462012-01-04 17:09:44 -0500699 int err = 0, err2 = 0;
Theodore Ts'o7f511862013-01-13 08:41:45 -0500700 ext4_group_t o_group = EXT4_SB(sb)->s_groups_count;
Yongqiang Yang19c52462012-01-04 17:09:44 -0500701
Darrick J. Wonge2b911c2015-10-17 16:18:43 -0400702 if (ext4_has_feature_bigalloc(sb)) {
Yongqiang Yang19c52462012-01-04 17:09:44 -0500703 ext4_msg(sb, KERN_ERR,
704 "Online resizing not (yet) supported with bigalloc");
705 return -EOPNOTSUPP;
706 }
707
Yongqiang Yang19c52462012-01-04 17:09:44 -0500708 if (copy_from_user(&n_blocks_count, (__u64 __user *)arg,
709 sizeof(__u64))) {
710 return -EFAULT;
711 }
712
Yongqiang Yang19c52462012-01-04 17:09:44 -0500713 err = ext4_resize_begin(sb);
714 if (err)
715 return err;
716
Al Viro8cae6f72012-07-19 11:19:07 +0400717 err = mnt_want_write_file(filp);
Yongqiang Yang19c52462012-01-04 17:09:44 -0500718 if (err)
719 goto resizefs_out;
720
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);
726 }
727 if (err == 0)
728 err = err2;
Al Viro8cae6f72012-07-19 11:19:07 +0400729 mnt_drop_write_file(filp);
Theodore Ts'o7f511862013-01-13 08:41:45 -0500730 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);
734
Yongqiang Yang19c52462012-01-04 17:09:44 -0500735resizefs_out:
736 ext4_resize_end(sb);
737 return err;
738 }
739
JP Abgrallcc14b9e2014-07-23 16:55:07 -0700740 case FIDTRIM:
Lukas Czernere681c042010-11-19 21:47:07 -0500741 case FITRIM:
742 {
Lukas Czerner41431792011-02-23 12:42:32 -0500743 struct request_queue *q = bdev_get_queue(sb->s_bdev);
Lukas Czernere681c042010-11-19 21:47:07 -0500744 struct fstrim_range range;
745 int ret = 0;
JP Abgrallcc14b9e2014-07-23 16:55:07 -0700746 int flags = cmd == FIDTRIM ? BLKDEV_DISCARD_SECURE : 0;
Lukas Czernere681c042010-11-19 21:47:07 -0500747
748 if (!capable(CAP_SYS_ADMIN))
749 return -EPERM;
750
Lukas Czerner41431792011-02-23 12:42:32 -0500751 if (!blk_queue_discard(q))
752 return -EOPNOTSUPP;
753
JP Abgrallcc14b9e2014-07-23 16:55:07 -0700754 if ((flags & BLKDEV_DISCARD_SECURE) && !blk_queue_secure_erase(q))
755 return -EOPNOTSUPP;
756
H Hartley Sweetene6705f72011-10-18 10:59:51 -0400757 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
Lukas Czernere681c042010-11-19 21:47:07 -0500758 sizeof(range)))
759 return -EFAULT;
760
Lukas Czerner5c2ed622011-02-23 17:49:51 -0500761 range.minlen = max((unsigned int)range.minlen,
762 q->limits.discard_granularity);
JP Abgrallcc14b9e2014-07-23 16:55:07 -0700763 ret = ext4_trim_fs(sb, &range, flags);
Lukas Czernere681c042010-11-19 21:47:07 -0500764 if (ret < 0)
765 return ret;
766
H Hartley Sweetene6705f72011-10-18 10:59:51 -0400767 if (copy_to_user((struct fstrim_range __user *)arg, &range,
Lukas Czernere681c042010-11-19 21:47:07 -0500768 sizeof(range)))
769 return -EFAULT;
770
771 return 0;
772 }
Theodore Ts'o7869a4a2013-08-16 22:05:14 -0400773 case EXT4_IOC_PRECACHE_EXTENTS:
774 return ext4_ext_precache(inode);
Lukas Czernere681c042010-11-19 21:47:07 -0500775
Hyojun Kim63da4202017-10-06 17:10:08 -0700776 case EXT4_IOC_SET_ENCRYPTION_POLICY:
Richard Weinberger9a200d02016-09-30 01:49:55 -0400777 if (!ext4_has_feature_encrypt(sb))
778 return -EOPNOTSUPP;
Hyojun Kim63da4202017-10-06 17:10:08 -0700779 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
Richard Weinberger9a200d02016-09-30 01:49:55 -0400780
Michael Halcrow9bd82122015-04-11 07:48:01 -0400781 case EXT4_IOC_GET_ENCRYPTION_PWSALT: {
Hyojun Kim63da4202017-10-06 17:10:08 -0700782#ifdef CONFIG_EXT4_FS_ENCRYPTION
Michael Halcrow9bd82122015-04-11 07:48:01 -0400783 int err, err2;
784 struct ext4_sb_info *sbi = EXT4_SB(sb);
785 handle_t *handle;
786
Hyojun Kim63da4202017-10-06 17:10:08 -0700787 if (!ext4_has_feature_encrypt(sb))
Michael Halcrow9bd82122015-04-11 07:48:01 -0400788 return -EOPNOTSUPP;
789 if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) {
790 err = mnt_want_write_file(filp);
791 if (err)
792 return err;
793 handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1);
794 if (IS_ERR(handle)) {
795 err = PTR_ERR(handle);
796 goto pwsalt_err_exit;
797 }
798 err = ext4_journal_get_write_access(handle, sbi->s_sbh);
799 if (err)
800 goto pwsalt_err_journal;
801 generate_random_uuid(sbi->s_es->s_encrypt_pw_salt);
802 err = ext4_handle_dirty_metadata(handle, NULL,
803 sbi->s_sbh);
804 pwsalt_err_journal:
805 err2 = ext4_journal_stop(handle);
806 if (err2 && !err)
807 err = err2;
808 pwsalt_err_exit:
809 mnt_drop_write_file(filp);
810 if (err)
811 return err;
812 }
Fabian Frederickb4ab9e22015-06-08 12:23:21 -0400813 if (copy_to_user((void __user *) arg,
814 sbi->s_es->s_encrypt_pw_salt, 16))
Michael Halcrow9bd82122015-04-11 07:48:01 -0400815 return -EFAULT;
816 return 0;
Michael Halcrow9bd82122015-04-11 07:48:01 -0400817#else
818 return -EOPNOTSUPP;
819#endif
820 }
Hyojun Kim63da4202017-10-06 17:10:08 -0700821 case EXT4_IOC_GET_ENCRYPTION_POLICY:
822 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
823
Li Xi9b7365f2016-01-08 16:01:22 -0500824 case EXT4_IOC_FSGETXATTR:
825 {
826 struct fsxattr fa;
827
828 memset(&fa, 0, sizeof(struct fsxattr));
Li Xi9b7365f2016-01-08 16:01:22 -0500829 fa.fsx_xflags = ext4_iflags_to_xflags(ei->i_flags & EXT4_FL_USER_VISIBLE);
830
Kaho Ng0b7b7772016-09-05 23:11:58 -0400831 if (ext4_has_feature_project(inode->i_sb)) {
Li Xi9b7365f2016-01-08 16:01:22 -0500832 fa.fsx_projid = (__u32)from_kprojid(&init_user_ns,
833 EXT4_I(inode)->i_projid);
834 }
835
836 if (copy_to_user((struct fsxattr __user *)arg,
837 &fa, sizeof(fa)))
838 return -EFAULT;
839 return 0;
840 }
841 case EXT4_IOC_FSSETXATTR:
842 {
843 struct fsxattr fa;
844 int err;
845
846 if (copy_from_user(&fa, (struct fsxattr __user *)arg,
847 sizeof(fa)))
848 return -EFAULT;
849
850 /* Make sure caller has proper permission */
851 if (!inode_owner_or_capable(inode))
852 return -EACCES;
853
854 err = mnt_want_write_file(filp);
855 if (err)
856 return err;
857
858 flags = ext4_xflags_to_iflags(fa.fsx_xflags);
859 flags = ext4_mask_flags(inode->i_mode, flags);
860
Al Viro59551022016-01-22 15:40:57 -0500861 inode_lock(inode);
Li Xi9b7365f2016-01-08 16:01:22 -0500862 flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) |
863 (flags & EXT4_FL_XFLAG_VISIBLE);
864 err = ext4_ioctl_setflags(inode, flags);
Al Viro59551022016-01-22 15:40:57 -0500865 inode_unlock(inode);
Li Xi9b7365f2016-01-08 16:01:22 -0500866 mnt_drop_write_file(filp);
867 if (err)
868 return err;
869
870 err = ext4_ioctl_setproject(filp, fa.fsx_projid);
871 if (err)
872 return err;
873
874 return 0;
875 }
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700876 default:
877 return -ENOTTY;
878 }
879}
880
881#ifdef CONFIG_COMPAT
Mingming Cao617ba132006-10-11 01:20:53 -0700882long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700883{
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700884 /* These are just misnamed, they actually get/put from/to user an int */
885 switch (cmd) {
Mingming Cao617ba132006-10-11 01:20:53 -0700886 case EXT4_IOC32_GETFLAGS:
887 cmd = EXT4_IOC_GETFLAGS;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700888 break;
Mingming Cao617ba132006-10-11 01:20:53 -0700889 case EXT4_IOC32_SETFLAGS:
890 cmd = EXT4_IOC_SETFLAGS;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700891 break;
Mingming Cao617ba132006-10-11 01:20:53 -0700892 case EXT4_IOC32_GETVERSION:
893 cmd = EXT4_IOC_GETVERSION;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700894 break;
Mingming Cao617ba132006-10-11 01:20:53 -0700895 case EXT4_IOC32_SETVERSION:
896 cmd = EXT4_IOC_SETVERSION;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700897 break;
Mingming Cao617ba132006-10-11 01:20:53 -0700898 case EXT4_IOC32_GROUP_EXTEND:
899 cmd = EXT4_IOC_GROUP_EXTEND;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700900 break;
Mingming Cao617ba132006-10-11 01:20:53 -0700901 case EXT4_IOC32_GETVERSION_OLD:
902 cmd = EXT4_IOC_GETVERSION_OLD;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700903 break;
Mingming Cao617ba132006-10-11 01:20:53 -0700904 case EXT4_IOC32_SETVERSION_OLD:
905 cmd = EXT4_IOC_SETVERSION_OLD;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700906 break;
Mingming Cao617ba132006-10-11 01:20:53 -0700907 case EXT4_IOC32_GETRSVSZ:
908 cmd = EXT4_IOC_GETRSVSZ;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700909 break;
Mingming Cao617ba132006-10-11 01:20:53 -0700910 case EXT4_IOC32_SETRSVSZ:
911 cmd = EXT4_IOC_SETRSVSZ;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700912 break;
Ben Hutchings4d92dc02010-05-17 06:00:00 -0400913 case EXT4_IOC32_GROUP_ADD: {
914 struct compat_ext4_new_group_input __user *uinput;
915 struct ext4_new_group_input input;
916 mm_segment_t old_fs;
917 int err;
918
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);
927 if (err)
928 return -EFAULT;
929 old_fs = get_fs();
930 set_fs(KERNEL_DS);
931 err = ext4_ioctl(file, EXT4_IOC_GROUP_ADD,
932 (unsigned long) &input);
933 set_fs(old_fs);
934 return err;
935 }
Christian Borntraegerb684b2e2010-05-15 00:00:00 -0400936 case EXT4_IOC_MOVE_EXT:
Yongqiang Yang19c52462012-01-04 17:09:44 -0500937 case EXT4_IOC_RESIZE_FS:
Theodore Ts'o7869a4a2013-08-16 22:05:14 -0400938 case EXT4_IOC_PRECACHE_EXTENTS:
Michael Halcrow9bd82122015-04-11 07:48:01 -0400939 case EXT4_IOC_SET_ENCRYPTION_POLICY:
940 case EXT4_IOC_GET_ENCRYPTION_PWSALT:
941 case EXT4_IOC_GET_ENCRYPTION_POLICY:
Christian Borntraegerb684b2e2010-05-15 00:00:00 -0400942 break;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700943 default:
944 return -ENOIOCTLCMD;
945 }
Andi Kleen5cdd7b22008-04-29 22:03:54 -0400946 return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700947}
948#endif