blob: 28cc412852afba41650ffeee2e713e2345b60511 [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
Yongqiang Yang19c52462012-01-04 17:09:44 -050022#define MAX_32_NUM ((((unsigned long long) 1) << 32) - 1)
23
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -040024/**
25 * Swap memory between @a and @b for @len bytes.
26 *
27 * @a: pointer to first memory area
28 * @b: pointer to second memory area
29 * @len: number of bytes to swap
30 *
31 */
32static void memswap(void *a, void *b, size_t len)
33{
34 unsigned char *ap, *bp;
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -040035
36 ap = (unsigned char *)a;
37 bp = (unsigned char *)b;
38 while (len-- > 0) {
Fabian Frederick4b7e2db2015-06-12 23:46:33 -040039 swap(*ap, *bp);
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -040040 ap++;
41 bp++;
42 }
43}
44
45/**
46 * Swap i_data and associated attributes between @inode1 and @inode2.
47 * This function is used for the primary swap between inode1 and inode2
48 * and also to revert this primary swap in case of errors.
49 *
50 * Therefore you have to make sure, that calling this method twice
51 * will revert all changes.
52 *
53 * @inode1: pointer to first inode
54 * @inode2: pointer to second inode
55 */
56static void swap_inode_data(struct inode *inode1, struct inode *inode2)
57{
58 loff_t isize;
59 struct ext4_inode_info *ei1;
60 struct ext4_inode_info *ei2;
61
62 ei1 = EXT4_I(inode1);
63 ei2 = EXT4_I(inode2);
64
65 memswap(&inode1->i_flags, &inode2->i_flags, sizeof(inode1->i_flags));
66 memswap(&inode1->i_version, &inode2->i_version,
67 sizeof(inode1->i_version));
68 memswap(&inode1->i_blocks, &inode2->i_blocks,
69 sizeof(inode1->i_blocks));
70 memswap(&inode1->i_bytes, &inode2->i_bytes, sizeof(inode1->i_bytes));
71 memswap(&inode1->i_atime, &inode2->i_atime, sizeof(inode1->i_atime));
72 memswap(&inode1->i_mtime, &inode2->i_mtime, sizeof(inode1->i_mtime));
73
74 memswap(ei1->i_data, ei2->i_data, sizeof(ei1->i_data));
75 memswap(&ei1->i_flags, &ei2->i_flags, sizeof(ei1->i_flags));
76 memswap(&ei1->i_disksize, &ei2->i_disksize, sizeof(ei1->i_disksize));
Theodore Ts'ocde2d7a2013-08-12 09:29:30 -040077 ext4_es_remove_extent(inode1, 0, EXT_MAX_BLOCKS);
78 ext4_es_remove_extent(inode2, 0, EXT_MAX_BLOCKS);
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -040079
80 isize = i_size_read(inode1);
81 i_size_write(inode1, i_size_read(inode2));
82 i_size_write(inode2, isize);
83}
84
85/**
86 * Swap the information from the given @inode and the inode
87 * EXT4_BOOT_LOADER_INO. It will basically swap i_data and all other
88 * important fields of the inodes.
89 *
90 * @sb: the super block of the filesystem
91 * @inode: the inode to swap with EXT4_BOOT_LOADER_INO
92 *
93 */
94static long swap_inode_boot_loader(struct super_block *sb,
95 struct inode *inode)
96{
97 handle_t *handle;
98 int err;
99 struct inode *inode_bl;
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400100 struct ext4_inode_info *ei_bl;
jon ernstd7092ae2014-01-11 13:26:56 -0500101 struct ext4_sb_info *sbi = EXT4_SB(sb);
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400102
Theodore Ts'od8558a22014-02-17 20:44:36 -0500103 if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode))
104 return -EINVAL;
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400105
Theodore Ts'od8558a22014-02-17 20:44:36 -0500106 if (!inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN))
107 return -EPERM;
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400108
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400109 inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO);
Theodore Ts'od8558a22014-02-17 20:44:36 -0500110 if (IS_ERR(inode_bl))
111 return PTR_ERR(inode_bl);
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400112 ei_bl = EXT4_I(inode_bl);
113
114 filemap_flush(inode->i_mapping);
115 filemap_flush(inode_bl->i_mapping);
116
117 /* Protect orig inodes against a truncate and make sure,
118 * that only 1 swap_inode_boot_loader is running. */
J. Bruce Fields375e2892012-04-18 15:16:33 -0400119 lock_two_nondirectories(inode, inode_bl);
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400120
121 truncate_inode_pages(&inode->i_data, 0);
122 truncate_inode_pages(&inode_bl->i_data, 0);
123
124 /* Wait for all existing dio workers */
125 ext4_inode_block_unlocked_dio(inode);
126 ext4_inode_block_unlocked_dio(inode_bl);
127 inode_dio_wait(inode);
128 inode_dio_wait(inode_bl);
129
130 handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2);
131 if (IS_ERR(handle)) {
132 err = -EINVAL;
Zheng Liu30d29b12014-02-12 11:48:31 -0500133 goto journal_err_out;
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400134 }
135
136 /* Protect extent tree against block allocations via delalloc */
137 ext4_double_down_write_data_sem(inode, inode_bl);
138
139 if (inode_bl->i_nlink == 0) {
140 /* this inode has never been used as a BOOT_LOADER */
141 set_nlink(inode_bl, 1);
142 i_uid_write(inode_bl, 0);
143 i_gid_write(inode_bl, 0);
144 inode_bl->i_flags = 0;
145 ei_bl->i_flags = 0;
146 inode_bl->i_version = 1;
147 i_size_write(inode_bl, 0);
148 inode_bl->i_mode = S_IFREG;
Darrick J. Wonge2b911c2015-10-17 16:18:43 -0400149 if (ext4_has_feature_extents(sb)) {
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400150 ext4_set_inode_flag(inode_bl, EXT4_INODE_EXTENTS);
151 ext4_ext_tree_init(handle, inode_bl);
152 } else
153 memset(ei_bl->i_data, 0, sizeof(ei_bl->i_data));
154 }
155
156 swap_inode_data(inode, inode_bl);
157
158 inode->i_ctime = inode_bl->i_ctime = ext4_current_time(inode);
159
160 spin_lock(&sbi->s_next_gen_lock);
161 inode->i_generation = sbi->s_next_generation++;
162 inode_bl->i_generation = sbi->s_next_generation++;
163 spin_unlock(&sbi->s_next_gen_lock);
164
165 ext4_discard_preallocations(inode);
166
167 err = ext4_mark_inode_dirty(handle, inode);
168 if (err < 0) {
169 ext4_warning(inode->i_sb,
170 "couldn't mark inode #%lu dirty (err %d)",
171 inode->i_ino, err);
172 /* Revert all changes: */
173 swap_inode_data(inode, inode_bl);
174 } else {
175 err = ext4_mark_inode_dirty(handle, inode_bl);
176 if (err < 0) {
177 ext4_warning(inode_bl->i_sb,
178 "couldn't mark inode #%lu dirty (err %d)",
179 inode_bl->i_ino, err);
180 /* Revert all changes: */
181 swap_inode_data(inode, inode_bl);
182 ext4_mark_inode_dirty(handle, inode);
183 }
184 }
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400185 ext4_journal_stop(handle);
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400186 ext4_double_up_write_data_sem(inode, inode_bl);
187
Zheng Liu30d29b12014-02-12 11:48:31 -0500188journal_err_out:
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400189 ext4_inode_resume_unlocked_dio(inode);
190 ext4_inode_resume_unlocked_dio(inode_bl);
J. Bruce Fields375e2892012-04-18 15:16:33 -0400191 unlock_two_nondirectories(inode, inode_bl);
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400192 iput(inode_bl);
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400193 return err;
194}
195
Michael Halcrow9bd82122015-04-11 07:48:01 -0400196static 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}
205
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;
311
312 if (!EXT4_HAS_RO_COMPAT_FEATURE(sb,
313 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
314 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
364 if (sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
365 struct dquot *transfer_to[MAXQUOTAS] = { };
366
367 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
Seth Forsheeff0bc082016-05-05 10:52:38 -0400368 if (!IS_ERR(transfer_to[PRJQUOTA])) {
Li Xi9b7365f2016-01-08 16:01:22 -0500369 err = __dquot_transfer(inode, transfer_to);
370 dqput(transfer_to[PRJQUOTA]);
371 if (err)
372 goto out_dirty;
373 }
374 }
375 EXT4_I(inode)->i_projid = kprojid;
376 inode->i_ctime = ext4_current_time(inode);
377out_dirty:
378 rc = ext4_mark_iloc_dirty(handle, inode, &iloc);
379 if (!err)
380 err = rc;
381out_stop:
382 ext4_journal_stop(handle);
383out_unlock:
Al Viro59551022016-01-22 15:40:57 -0500384 inode_unlock(inode);
Li Xi9b7365f2016-01-08 16:01:22 -0500385 mnt_drop_write_file(filp);
386 return err;
387}
388#else
389static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
390{
391 if (projid != EXT4_DEF_PROJID)
392 return -EOPNOTSUPP;
393 return 0;
394}
395#endif
396
397/* Transfer internal flags to xflags */
398static inline __u32 ext4_iflags_to_xflags(unsigned long iflags)
399{
400 __u32 xflags = 0;
401
402 if (iflags & EXT4_SYNC_FL)
403 xflags |= FS_XFLAG_SYNC;
404 if (iflags & EXT4_IMMUTABLE_FL)
405 xflags |= FS_XFLAG_IMMUTABLE;
406 if (iflags & EXT4_APPEND_FL)
407 xflags |= FS_XFLAG_APPEND;
408 if (iflags & EXT4_NODUMP_FL)
409 xflags |= FS_XFLAG_NODUMP;
410 if (iflags & EXT4_NOATIME_FL)
411 xflags |= FS_XFLAG_NOATIME;
412 if (iflags & EXT4_PROJINHERIT_FL)
413 xflags |= FS_XFLAG_PROJINHERIT;
414 return xflags;
415}
416
417/* Transfer xflags flags to internal */
418static inline unsigned long ext4_xflags_to_iflags(__u32 xflags)
419{
420 unsigned long iflags = 0;
421
422 if (xflags & FS_XFLAG_SYNC)
423 iflags |= EXT4_SYNC_FL;
424 if (xflags & FS_XFLAG_IMMUTABLE)
425 iflags |= EXT4_IMMUTABLE_FL;
426 if (xflags & FS_XFLAG_APPEND)
427 iflags |= EXT4_APPEND_FL;
428 if (xflags & FS_XFLAG_NODUMP)
429 iflags |= EXT4_NODUMP_FL;
430 if (xflags & FS_XFLAG_NOATIME)
431 iflags |= EXT4_NOATIME_FL;
432 if (xflags & FS_XFLAG_PROJINHERIT)
433 iflags |= EXT4_PROJINHERIT_FL;
434
435 return iflags;
436}
437
Andi Kleen5cdd7b22008-04-29 22:03:54 -0400438long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700439{
Al Viro496ad9a2013-01-23 17:07:38 -0500440 struct inode *inode = file_inode(filp);
Theodore Ts'obab08ab2011-09-09 18:36:51 -0400441 struct super_block *sb = inode->i_sb;
Mingming Cao617ba132006-10-11 01:20:53 -0700442 struct ext4_inode_info *ei = EXT4_I(inode);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700443 unsigned int flags;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700444
Theodore Ts'oaf5bc922008-09-08 22:25:24 -0400445 ext4_debug("cmd = %u, arg = %lu\n", cmd, arg);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700446
447 switch (cmd) {
Mingming Cao617ba132006-10-11 01:20:53 -0700448 case EXT4_IOC_GETFLAGS:
Jan Karaff9ddf72007-07-18 09:24:20 -0400449 ext4_get_inode_flags(ei);
Mingming Cao617ba132006-10-11 01:20:53 -0700450 flags = ei->i_flags & EXT4_FL_USER_VISIBLE;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700451 return put_user(flags, (int __user *) arg);
Mingming Cao617ba132006-10-11 01:20:53 -0700452 case EXT4_IOC_SETFLAGS: {
Li Xi9b7365f2016-01-08 16:01:22 -0500453 int err;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700454
Serge E. Hallyn2e149672011-03-23 16:43:26 -0700455 if (!inode_owner_or_capable(inode))
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700456 return -EACCES;
457
458 if (get_user(flags, (int __user *) arg))
459 return -EFAULT;
460
Al Viroa561be72011-11-23 11:57:51 -0500461 err = mnt_want_write_file(filp);
Dave Hansen42a74f22008-02-15 14:37:46 -0800462 if (err)
463 return err;
464
Duane Griffin2dc6b0d2009-02-15 18:09:20 -0500465 flags = ext4_mask_flags(inode->i_mode, flags);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700466
Al Viro59551022016-01-22 15:40:57 -0500467 inode_lock(inode);
Li Xi9b7365f2016-01-08 16:01:22 -0500468 err = ext4_ioctl_setflags(inode, flags);
Al Viro59551022016-01-22 15:40:57 -0500469 inode_unlock(inode);
Al Viro2a79f172011-12-09 08:06:57 -0500470 mnt_drop_write_file(filp);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700471 return err;
472 }
Mingming Cao617ba132006-10-11 01:20:53 -0700473 case EXT4_IOC_GETVERSION:
474 case EXT4_IOC_GETVERSION_OLD:
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700475 return put_user(inode->i_generation, (int __user *) arg);
Mingming Cao617ba132006-10-11 01:20:53 -0700476 case EXT4_IOC_SETVERSION:
477 case EXT4_IOC_SETVERSION_OLD: {
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700478 handle_t *handle;
Mingming Cao617ba132006-10-11 01:20:53 -0700479 struct ext4_iloc iloc;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700480 __u32 generation;
481 int err;
482
Serge E. Hallyn2e149672011-03-23 16:43:26 -0700483 if (!inode_owner_or_capable(inode))
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700484 return -EPERM;
Dave Hansen42a74f22008-02-15 14:37:46 -0800485
Dmitry Monakhov9aa5d322014-10-13 03:36:16 -0400486 if (ext4_has_metadata_csum(inode->i_sb)) {
Darrick J. Wong814525f2012-04-29 18:31:10 -0400487 ext4_warning(sb, "Setting inode version is not "
488 "supported with metadata_csum enabled.");
489 return -ENOTTY;
490 }
491
Al Viroa561be72011-11-23 11:57:51 -0500492 err = mnt_want_write_file(filp);
Dave Hansen42a74f22008-02-15 14:37:46 -0800493 if (err)
494 return err;
495 if (get_user(generation, (int __user *) arg)) {
496 err = -EFAULT;
497 goto setversion_out;
498 }
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700499
Al Viro59551022016-01-22 15:40:57 -0500500 inode_lock(inode);
Theodore Ts'o9924a922013-02-08 21:59:22 -0500501 handle = ext4_journal_start(inode, EXT4_HT_INODE, 1);
Dave Hansen42a74f22008-02-15 14:37:46 -0800502 if (IS_ERR(handle)) {
503 err = PTR_ERR(handle);
Djalal Harouni6c2155b2012-01-03 02:31:52 +0100504 goto unlock_out;
Dave Hansen42a74f22008-02-15 14:37:46 -0800505 }
Mingming Cao617ba132006-10-11 01:20:53 -0700506 err = ext4_reserve_inode_write(handle, inode, &iloc);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700507 if (err == 0) {
Kalpak Shahef7f3832007-07-18 09:15:20 -0400508 inode->i_ctime = ext4_current_time(inode);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700509 inode->i_generation = generation;
Mingming Cao617ba132006-10-11 01:20:53 -0700510 err = ext4_mark_iloc_dirty(handle, inode, &iloc);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700511 }
Mingming Cao617ba132006-10-11 01:20:53 -0700512 ext4_journal_stop(handle);
Djalal Harouni6c2155b2012-01-03 02:31:52 +0100513
514unlock_out:
Al Viro59551022016-01-22 15:40:57 -0500515 inode_unlock(inode);
Dave Hansen42a74f22008-02-15 14:37:46 -0800516setversion_out:
Al Viro2a79f172011-12-09 08:06:57 -0500517 mnt_drop_write_file(filp);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700518 return err;
519 }
Mingming Cao617ba132006-10-11 01:20:53 -0700520 case EXT4_IOC_GROUP_EXTEND: {
521 ext4_fsblk_t n_blocks_count;
Peng Taoac046f12009-07-13 09:30:17 -0400522 int err, err2=0;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700523
Yongqiang Yang8f82f842011-07-26 21:35:44 -0400524 err = ext4_resize_begin(sb);
525 if (err)
526 return err;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700527
Djalal Harouni014a1772012-01-04 17:09:52 -0500528 if (get_user(n_blocks_count, (__u32 __user *)arg)) {
529 err = -EFAULT;
530 goto group_extend_out;
531 }
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700532
Darrick J. Wonge2b911c2015-10-17 16:18:43 -0400533 if (ext4_has_feature_bigalloc(sb)) {
Theodore Ts'obab08ab2011-09-09 18:36:51 -0400534 ext4_msg(sb, KERN_ERR,
535 "Online resizing not supported with bigalloc");
Djalal Harouni014a1772012-01-04 17:09:52 -0500536 err = -EOPNOTSUPP;
537 goto group_extend_out;
Theodore Ts'obab08ab2011-09-09 18:36:51 -0400538 }
539
Al Viroa561be72011-11-23 11:57:51 -0500540 err = mnt_want_write_file(filp);
Dave Hansen42a74f22008-02-15 14:37:46 -0800541 if (err)
Djalal Harouni014a1772012-01-04 17:09:52 -0500542 goto group_extend_out;
Dave Hansen42a74f22008-02-15 14:37:46 -0800543
Mingming Cao617ba132006-10-11 01:20:53 -0700544 err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count);
Peng Taoac046f12009-07-13 09:30:17 -0400545 if (EXT4_SB(sb)->s_journal) {
546 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
547 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal);
548 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
549 }
Hidehiro Kawai7ffe1ea2008-10-10 20:29:21 -0400550 if (err == 0)
551 err = err2;
Al Viro2a79f172011-12-09 08:06:57 -0500552 mnt_drop_write_file(filp);
Djalal Harouni014a1772012-01-04 17:09:52 -0500553group_extend_out:
Yongqiang Yang8f82f842011-07-26 21:35:44 -0400554 ext4_resize_end(sb);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700555 return err;
556 }
Akira Fujita748de672009-06-17 19:24:03 -0400557
558 case EXT4_IOC_MOVE_EXT: {
559 struct move_extent me;
Al Viro2903ff02012-08-28 12:52:22 -0400560 struct fd donor;
561 int err;
Akira Fujita748de672009-06-17 19:24:03 -0400562
Akira Fujita4a585792009-12-06 23:38:31 -0500563 if (!(filp->f_mode & FMODE_READ) ||
564 !(filp->f_mode & FMODE_WRITE))
565 return -EBADF;
566
Akira Fujita748de672009-06-17 19:24:03 -0400567 if (copy_from_user(&me,
568 (struct move_extent __user *)arg, sizeof(me)))
569 return -EFAULT;
Akira Fujita4a585792009-12-06 23:38:31 -0500570 me.moved_len = 0;
Akira Fujita748de672009-06-17 19:24:03 -0400571
Al Viro2903ff02012-08-28 12:52:22 -0400572 donor = fdget(me.donor_fd);
573 if (!donor.file)
Akira Fujita748de672009-06-17 19:24:03 -0400574 return -EBADF;
575
Al Viro2903ff02012-08-28 12:52:22 -0400576 if (!(donor.file->f_mode & FMODE_WRITE)) {
Akira Fujita4a585792009-12-06 23:38:31 -0500577 err = -EBADF;
578 goto mext_out;
Akira Fujita748de672009-06-17 19:24:03 -0400579 }
580
Darrick J. Wonge2b911c2015-10-17 16:18:43 -0400581 if (ext4_has_feature_bigalloc(sb)) {
Theodore Ts'obab08ab2011-09-09 18:36:51 -0400582 ext4_msg(sb, KERN_ERR,
583 "Online defrag not supported with bigalloc");
Al Viro399c9b82012-08-26 21:00:03 -0400584 err = -EOPNOTSUPP;
585 goto mext_out;
Ross Zwisler73f34a52016-02-26 15:19:49 -0800586 } else if (IS_DAX(inode)) {
587 ext4_msg(sb, KERN_ERR,
588 "Online defrag not supported with DAX");
589 err = -EOPNOTSUPP;
590 goto mext_out;
Theodore Ts'obab08ab2011-09-09 18:36:51 -0400591 }
592
Al Viroa561be72011-11-23 11:57:51 -0500593 err = mnt_want_write_file(filp);
Akira Fujita4a585792009-12-06 23:38:31 -0500594 if (err)
595 goto mext_out;
596
Al Viro2903ff02012-08-28 12:52:22 -0400597 err = ext4_move_extents(filp, donor.file, me.orig_start,
Akira Fujita748de672009-06-17 19:24:03 -0400598 me.donor_start, me.len, &me.moved_len);
Al Viro2a79f172011-12-09 08:06:57 -0500599 mnt_drop_write_file(filp);
Akira Fujita748de672009-06-17 19:24:03 -0400600
Theodore Ts'o60e66792010-05-17 07:00:00 -0400601 if (copy_to_user((struct move_extent __user *)arg,
Akira Fujitac437b272010-03-04 00:39:24 -0500602 &me, sizeof(me)))
Akira Fujita4a585792009-12-06 23:38:31 -0500603 err = -EFAULT;
604mext_out:
Al Viro2903ff02012-08-28 12:52:22 -0400605 fdput(donor);
Akira Fujita748de672009-06-17 19:24:03 -0400606 return err;
607 }
608
Mingming Cao617ba132006-10-11 01:20:53 -0700609 case EXT4_IOC_GROUP_ADD: {
610 struct ext4_new_group_data input;
Peng Taoac046f12009-07-13 09:30:17 -0400611 int err, err2=0;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700612
Yongqiang Yang8f82f842011-07-26 21:35:44 -0400613 err = ext4_resize_begin(sb);
614 if (err)
615 return err;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700616
Mingming Cao617ba132006-10-11 01:20:53 -0700617 if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg,
Djalal Harouni014a1772012-01-04 17:09:52 -0500618 sizeof(input))) {
619 err = -EFAULT;
620 goto group_add_out;
621 }
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700622
Darrick J. Wonge2b911c2015-10-17 16:18:43 -0400623 if (ext4_has_feature_bigalloc(sb)) {
Theodore Ts'obab08ab2011-09-09 18:36:51 -0400624 ext4_msg(sb, KERN_ERR,
625 "Online resizing not supported with bigalloc");
Djalal Harouni014a1772012-01-04 17:09:52 -0500626 err = -EOPNOTSUPP;
627 goto group_add_out;
Theodore Ts'obab08ab2011-09-09 18:36:51 -0400628 }
629
Al Viroa561be72011-11-23 11:57:51 -0500630 err = mnt_want_write_file(filp);
Dave Hansen42a74f22008-02-15 14:37:46 -0800631 if (err)
Djalal Harouni014a1772012-01-04 17:09:52 -0500632 goto group_add_out;
Dave Hansen42a74f22008-02-15 14:37:46 -0800633
Mingming Cao617ba132006-10-11 01:20:53 -0700634 err = ext4_group_add(sb, &input);
Peng Taoac046f12009-07-13 09:30:17 -0400635 if (EXT4_SB(sb)->s_journal) {
636 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
637 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal);
638 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
639 }
Hidehiro Kawai7ffe1ea2008-10-10 20:29:21 -0400640 if (err == 0)
641 err = err2;
Al Viro2a79f172011-12-09 08:06:57 -0500642 mnt_drop_write_file(filp);
Theodore Ts'o7f511862013-01-13 08:41:45 -0500643 if (!err && ext4_has_group_desc_csum(sb) &&
644 test_opt(sb, INIT_INODE_TABLE))
645 err = ext4_register_li_request(sb, input.group);
Djalal Harouni014a1772012-01-04 17:09:52 -0500646group_add_out:
Yongqiang Yang8f82f842011-07-26 21:35:44 -0400647 ext4_resize_end(sb);
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700648 return err;
649 }
650
Aneesh Kumar K.Vc14c6fd2008-01-28 23:58:26 -0500651 case EXT4_IOC_MIGRATE:
Aneesh Kumar K.V2a43a872008-09-13 12:52:26 -0400652 {
653 int err;
Serge E. Hallyn2e149672011-03-23 16:43:26 -0700654 if (!inode_owner_or_capable(inode))
Aneesh Kumar K.V2a43a872008-09-13 12:52:26 -0400655 return -EACCES;
656
Al Viroa561be72011-11-23 11:57:51 -0500657 err = mnt_want_write_file(filp);
Aneesh Kumar K.V2a43a872008-09-13 12:52:26 -0400658 if (err)
659 return err;
660 /*
661 * inode_mutex prevent write and truncate on the file.
662 * Read still goes through. We take i_data_sem in
663 * ext4_ext_swap_inode_data before we switch the
664 * inode format to prevent read.
665 */
Al Viro59551022016-01-22 15:40:57 -0500666 inode_lock((inode));
Aneesh Kumar K.V2a43a872008-09-13 12:52:26 -0400667 err = ext4_ext_migrate(inode);
Al Viro59551022016-01-22 15:40:57 -0500668 inode_unlock((inode));
Al Viro2a79f172011-12-09 08:06:57 -0500669 mnt_drop_write_file(filp);
Aneesh Kumar K.V2a43a872008-09-13 12:52:26 -0400670 return err;
671 }
Aneesh Kumar K.Vc14c6fd2008-01-28 23:58:26 -0500672
Theodore Ts'occd25062009-02-26 01:04:07 -0500673 case EXT4_IOC_ALLOC_DA_BLKS:
674 {
675 int err;
Serge E. Hallyn2e149672011-03-23 16:43:26 -0700676 if (!inode_owner_or_capable(inode))
Theodore Ts'occd25062009-02-26 01:04:07 -0500677 return -EACCES;
678
Al Viroa561be72011-11-23 11:57:51 -0500679 err = mnt_want_write_file(filp);
Theodore Ts'occd25062009-02-26 01:04:07 -0500680 if (err)
681 return err;
682 err = ext4_alloc_da_blocks(inode);
Al Viro2a79f172011-12-09 08:06:57 -0500683 mnt_drop_write_file(filp);
Theodore Ts'occd25062009-02-26 01:04:07 -0500684 return err;
685 }
686
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400687 case EXT4_IOC_SWAP_BOOT:
Dmitry Monakhov3e67cfad22014-10-03 12:47:23 -0400688 {
689 int err;
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400690 if (!(filp->f_mode & FMODE_WRITE))
691 return -EBADF;
Dmitry Monakhov3e67cfad22014-10-03 12:47:23 -0400692 err = mnt_want_write_file(filp);
693 if (err)
694 return err;
695 err = swap_inode_boot_loader(sb, inode);
696 mnt_drop_write_file(filp);
697 return err;
698 }
Dr. Tilmann Bubeck393d1d12013-04-08 12:54:05 -0400699
Yongqiang Yang19c52462012-01-04 17:09:44 -0500700 case EXT4_IOC_RESIZE_FS: {
701 ext4_fsblk_t n_blocks_count;
Yongqiang Yang19c52462012-01-04 17:09:44 -0500702 int err = 0, err2 = 0;
Theodore Ts'o7f511862013-01-13 08:41:45 -0500703 ext4_group_t o_group = EXT4_SB(sb)->s_groups_count;
Yongqiang Yang19c52462012-01-04 17:09:44 -0500704
Darrick J. Wonge2b911c2015-10-17 16:18:43 -0400705 if (ext4_has_feature_bigalloc(sb)) {
Yongqiang Yang19c52462012-01-04 17:09:44 -0500706 ext4_msg(sb, KERN_ERR,
707 "Online resizing not (yet) supported with bigalloc");
708 return -EOPNOTSUPP;
709 }
710
Yongqiang Yang19c52462012-01-04 17:09:44 -0500711 if (copy_from_user(&n_blocks_count, (__u64 __user *)arg,
712 sizeof(__u64))) {
713 return -EFAULT;
714 }
715
Yongqiang Yang19c52462012-01-04 17:09:44 -0500716 err = ext4_resize_begin(sb);
717 if (err)
718 return err;
719
Al Viro8cae6f72012-07-19 11:19:07 +0400720 err = mnt_want_write_file(filp);
Yongqiang Yang19c52462012-01-04 17:09:44 -0500721 if (err)
722 goto resizefs_out;
723
724 err = ext4_resize_fs(sb, n_blocks_count);
725 if (EXT4_SB(sb)->s_journal) {
726 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal);
727 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal);
728 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal);
729 }
730 if (err == 0)
731 err = err2;
Al Viro8cae6f72012-07-19 11:19:07 +0400732 mnt_drop_write_file(filp);
Theodore Ts'o7f511862013-01-13 08:41:45 -0500733 if (!err && (o_group > EXT4_SB(sb)->s_groups_count) &&
734 ext4_has_group_desc_csum(sb) &&
735 test_opt(sb, INIT_INODE_TABLE))
736 err = ext4_register_li_request(sb, o_group);
737
Yongqiang Yang19c52462012-01-04 17:09:44 -0500738resizefs_out:
739 ext4_resize_end(sb);
740 return err;
741 }
742
Lukas Czernere681c042010-11-19 21:47:07 -0500743 case FITRIM:
744 {
Lukas Czerner41431792011-02-23 12:42:32 -0500745 struct request_queue *q = bdev_get_queue(sb->s_bdev);
Lukas Czernere681c042010-11-19 21:47:07 -0500746 struct fstrim_range range;
747 int ret = 0;
748
749 if (!capable(CAP_SYS_ADMIN))
750 return -EPERM;
751
Lukas Czerner41431792011-02-23 12:42:32 -0500752 if (!blk_queue_discard(q))
753 return -EOPNOTSUPP;
754
H Hartley Sweetene6705f72011-10-18 10:59:51 -0400755 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
Lukas Czernere681c042010-11-19 21:47:07 -0500756 sizeof(range)))
757 return -EFAULT;
758
Lukas Czerner5c2ed622011-02-23 17:49:51 -0500759 range.minlen = max((unsigned int)range.minlen,
760 q->limits.discard_granularity);
Lukas Czernere681c042010-11-19 21:47:07 -0500761 ret = ext4_trim_fs(sb, &range);
762 if (ret < 0)
763 return ret;
764
H Hartley Sweetene6705f72011-10-18 10:59:51 -0400765 if (copy_to_user((struct fstrim_range __user *)arg, &range,
Lukas Czernere681c042010-11-19 21:47:07 -0500766 sizeof(range)))
767 return -EFAULT;
768
769 return 0;
770 }
Theodore Ts'o7869a4a2013-08-16 22:05:14 -0400771 case EXT4_IOC_PRECACHE_EXTENTS:
772 return ext4_ext_precache(inode);
Michael Halcrow9bd82122015-04-11 07:48:01 -0400773 case EXT4_IOC_SET_ENCRYPTION_POLICY: {
774#ifdef CONFIG_EXT4_FS_ENCRYPTION
775 struct ext4_encryption_policy policy;
776 int err = 0;
Lukas Czernere681c042010-11-19 21:47:07 -0500777
Michael Halcrow9bd82122015-04-11 07:48:01 -0400778 if (copy_from_user(&policy,
779 (struct ext4_encryption_policy __user *)arg,
780 sizeof(policy))) {
781 err = -EFAULT;
782 goto encryption_policy_out;
783 }
784
785 err = ext4_process_policy(&policy, inode);
786encryption_policy_out:
787 return err;
788#else
789 return -EOPNOTSUPP;
790#endif
791 }
792 case EXT4_IOC_GET_ENCRYPTION_PWSALT: {
793 int err, err2;
794 struct ext4_sb_info *sbi = EXT4_SB(sb);
795 handle_t *handle;
796
797 if (!ext4_sb_has_crypto(sb))
798 return -EOPNOTSUPP;
799 if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) {
800 err = mnt_want_write_file(filp);
801 if (err)
802 return err;
803 handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1);
804 if (IS_ERR(handle)) {
805 err = PTR_ERR(handle);
806 goto pwsalt_err_exit;
807 }
808 err = ext4_journal_get_write_access(handle, sbi->s_sbh);
809 if (err)
810 goto pwsalt_err_journal;
811 generate_random_uuid(sbi->s_es->s_encrypt_pw_salt);
812 err = ext4_handle_dirty_metadata(handle, NULL,
813 sbi->s_sbh);
814 pwsalt_err_journal:
815 err2 = ext4_journal_stop(handle);
816 if (err2 && !err)
817 err = err2;
818 pwsalt_err_exit:
819 mnt_drop_write_file(filp);
820 if (err)
821 return err;
822 }
Fabian Frederickb4ab9e22015-06-08 12:23:21 -0400823 if (copy_to_user((void __user *) arg,
824 sbi->s_es->s_encrypt_pw_salt, 16))
Michael Halcrow9bd82122015-04-11 07:48:01 -0400825 return -EFAULT;
826 return 0;
827 }
828 case EXT4_IOC_GET_ENCRYPTION_POLICY: {
829#ifdef CONFIG_EXT4_FS_ENCRYPTION
830 struct ext4_encryption_policy policy;
831 int err = 0;
832
833 if (!ext4_encrypted_inode(inode))
834 return -ENOENT;
835 err = ext4_get_policy(inode, &policy);
836 if (err)
837 return err;
Fabian Frederickb4ab9e22015-06-08 12:23:21 -0400838 if (copy_to_user((void __user *)arg, &policy, sizeof(policy)))
Michael Halcrow9bd82122015-04-11 07:48:01 -0400839 return -EFAULT;
840 return 0;
841#else
842 return -EOPNOTSUPP;
843#endif
844 }
Li Xi9b7365f2016-01-08 16:01:22 -0500845 case EXT4_IOC_FSGETXATTR:
846 {
847 struct fsxattr fa;
848
849 memset(&fa, 0, sizeof(struct fsxattr));
850 ext4_get_inode_flags(ei);
851 fa.fsx_xflags = ext4_iflags_to_xflags(ei->i_flags & EXT4_FL_USER_VISIBLE);
852
853 if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb,
854 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
855 fa.fsx_projid = (__u32)from_kprojid(&init_user_ns,
856 EXT4_I(inode)->i_projid);
857 }
858
859 if (copy_to_user((struct fsxattr __user *)arg,
860 &fa, sizeof(fa)))
861 return -EFAULT;
862 return 0;
863 }
864 case EXT4_IOC_FSSETXATTR:
865 {
866 struct fsxattr fa;
867 int err;
868
869 if (copy_from_user(&fa, (struct fsxattr __user *)arg,
870 sizeof(fa)))
871 return -EFAULT;
872
873 /* Make sure caller has proper permission */
874 if (!inode_owner_or_capable(inode))
875 return -EACCES;
876
877 err = mnt_want_write_file(filp);
878 if (err)
879 return err;
880
881 flags = ext4_xflags_to_iflags(fa.fsx_xflags);
882 flags = ext4_mask_flags(inode->i_mode, flags);
883
Al Viro59551022016-01-22 15:40:57 -0500884 inode_lock(inode);
Li Xi9b7365f2016-01-08 16:01:22 -0500885 flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) |
886 (flags & EXT4_FL_XFLAG_VISIBLE);
887 err = ext4_ioctl_setflags(inode, flags);
Al Viro59551022016-01-22 15:40:57 -0500888 inode_unlock(inode);
Li Xi9b7365f2016-01-08 16:01:22 -0500889 mnt_drop_write_file(filp);
890 if (err)
891 return err;
892
893 err = ext4_ioctl_setproject(filp, fa.fsx_projid);
894 if (err)
895 return err;
896
897 return 0;
898 }
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700899 default:
900 return -ENOTTY;
901 }
902}
903
904#ifdef CONFIG_COMPAT
Mingming Cao617ba132006-10-11 01:20:53 -0700905long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700906{
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700907 /* These are just misnamed, they actually get/put from/to user an int */
908 switch (cmd) {
Mingming Cao617ba132006-10-11 01:20:53 -0700909 case EXT4_IOC32_GETFLAGS:
910 cmd = EXT4_IOC_GETFLAGS;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700911 break;
Mingming Cao617ba132006-10-11 01:20:53 -0700912 case EXT4_IOC32_SETFLAGS:
913 cmd = EXT4_IOC_SETFLAGS;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700914 break;
Mingming Cao617ba132006-10-11 01:20:53 -0700915 case EXT4_IOC32_GETVERSION:
916 cmd = EXT4_IOC_GETVERSION;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700917 break;
Mingming Cao617ba132006-10-11 01:20:53 -0700918 case EXT4_IOC32_SETVERSION:
919 cmd = EXT4_IOC_SETVERSION;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700920 break;
Mingming Cao617ba132006-10-11 01:20:53 -0700921 case EXT4_IOC32_GROUP_EXTEND:
922 cmd = EXT4_IOC_GROUP_EXTEND;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700923 break;
Mingming Cao617ba132006-10-11 01:20:53 -0700924 case EXT4_IOC32_GETVERSION_OLD:
925 cmd = EXT4_IOC_GETVERSION_OLD;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700926 break;
Mingming Cao617ba132006-10-11 01:20:53 -0700927 case EXT4_IOC32_SETVERSION_OLD:
928 cmd = EXT4_IOC_SETVERSION_OLD;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700929 break;
Mingming Cao617ba132006-10-11 01:20:53 -0700930 case EXT4_IOC32_GETRSVSZ:
931 cmd = EXT4_IOC_GETRSVSZ;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700932 break;
Mingming Cao617ba132006-10-11 01:20:53 -0700933 case EXT4_IOC32_SETRSVSZ:
934 cmd = EXT4_IOC_SETRSVSZ;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700935 break;
Ben Hutchings4d92dc02010-05-17 06:00:00 -0400936 case EXT4_IOC32_GROUP_ADD: {
937 struct compat_ext4_new_group_input __user *uinput;
938 struct ext4_new_group_input input;
939 mm_segment_t old_fs;
940 int err;
941
942 uinput = compat_ptr(arg);
943 err = get_user(input.group, &uinput->group);
944 err |= get_user(input.block_bitmap, &uinput->block_bitmap);
945 err |= get_user(input.inode_bitmap, &uinput->inode_bitmap);
946 err |= get_user(input.inode_table, &uinput->inode_table);
947 err |= get_user(input.blocks_count, &uinput->blocks_count);
948 err |= get_user(input.reserved_blocks,
949 &uinput->reserved_blocks);
950 if (err)
951 return -EFAULT;
952 old_fs = get_fs();
953 set_fs(KERNEL_DS);
954 err = ext4_ioctl(file, EXT4_IOC_GROUP_ADD,
955 (unsigned long) &input);
956 set_fs(old_fs);
957 return err;
958 }
Christian Borntraegerb684b2e2010-05-15 00:00:00 -0400959 case EXT4_IOC_MOVE_EXT:
Yongqiang Yang19c52462012-01-04 17:09:44 -0500960 case EXT4_IOC_RESIZE_FS:
Theodore Ts'o7869a4a2013-08-16 22:05:14 -0400961 case EXT4_IOC_PRECACHE_EXTENTS:
Michael Halcrow9bd82122015-04-11 07:48:01 -0400962 case EXT4_IOC_SET_ENCRYPTION_POLICY:
963 case EXT4_IOC_GET_ENCRYPTION_PWSALT:
964 case EXT4_IOC_GET_ENCRYPTION_POLICY:
Christian Borntraegerb684b2e2010-05-15 00:00:00 -0400965 break;
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700966 default:
967 return -ENOIOCTLCMD;
968 }
Andi Kleen5cdd7b22008-04-29 22:03:54 -0400969 return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
Dave Kleikampac27a0e2006-10-11 01:20:50 -0700970}
971#endif