Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 1 | /* |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 2 | * linux/fs/ext4/ioctl.c |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 1993, 1994, 1995 |
| 5 | * Remy Card (card@masi.ibp.fr) |
| 6 | * Laboratoire MASI - Institut Blaise Pascal |
| 7 | * Universite Pierre et Marie Curie (Paris VI) |
| 8 | */ |
| 9 | |
| 10 | #include <linux/fs.h> |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 11 | #include <linux/capability.h> |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 12 | #include <linux/time.h> |
| 13 | #include <linux/compat.h> |
Dave Hansen | 42a74f2 | 2008-02-15 14:37:46 -0800 | [diff] [blame] | 14 | #include <linux/mount.h> |
Akira Fujita | 748de67 | 2009-06-17 19:24:03 -0400 | [diff] [blame] | 15 | #include <linux/file.h> |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 16 | #include <linux/quotaops.h> |
Andy Shevchenko | 8da4b8c | 2016-05-20 17:01:00 -0700 | [diff] [blame] | 17 | #include <linux/uuid.h> |
Linus Torvalds | 7c0f6ba | 2016-12-24 11:46:01 -0800 | [diff] [blame] | 18 | #include <linux/uaccess.h> |
Theodore Ts'o | 783d948 | 2017-02-05 19:47:14 -0500 | [diff] [blame] | 19 | #include <linux/delay.h> |
Christoph Hellwig | 3dcf545 | 2008-04-29 18:13:32 -0400 | [diff] [blame] | 20 | #include "ext4_jbd2.h" |
| 21 | #include "ext4.h" |
Darrick J. Wong | 0c9ec4b | 2017-04-30 00:36:53 -0400 | [diff] [blame] | 22 | #include <linux/fsmap.h> |
| 23 | #include "fsmap.h" |
| 24 | #include <trace/events/ext4.h> |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 25 | |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 26 | /** |
| 27 | * Swap memory between @a and @b for @len bytes. |
| 28 | * |
| 29 | * @a: pointer to first memory area |
| 30 | * @b: pointer to second memory area |
| 31 | * @len: number of bytes to swap |
| 32 | * |
| 33 | */ |
| 34 | static void memswap(void *a, void *b, size_t len) |
| 35 | { |
| 36 | unsigned char *ap, *bp; |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 37 | |
| 38 | ap = (unsigned char *)a; |
| 39 | bp = (unsigned char *)b; |
| 40 | while (len-- > 0) { |
Fabian Frederick | 4b7e2db | 2015-06-12 23:46:33 -0400 | [diff] [blame] | 41 | swap(*ap, *bp); |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 42 | ap++; |
| 43 | bp++; |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Swap i_data and associated attributes between @inode1 and @inode2. |
| 49 | * This function is used for the primary swap between inode1 and inode2 |
| 50 | * and also to revert this primary swap in case of errors. |
| 51 | * |
| 52 | * Therefore you have to make sure, that calling this method twice |
| 53 | * will revert all changes. |
| 54 | * |
| 55 | * @inode1: pointer to first inode |
| 56 | * @inode2: pointer to second inode |
| 57 | */ |
| 58 | static void swap_inode_data(struct inode *inode1, struct inode *inode2) |
| 59 | { |
| 60 | loff_t isize; |
| 61 | struct ext4_inode_info *ei1; |
| 62 | struct ext4_inode_info *ei2; |
| 63 | |
| 64 | ei1 = EXT4_I(inode1); |
| 65 | ei2 = EXT4_I(inode2); |
| 66 | |
Jeff Layton | 9c5d58f | 2017-07-31 00:55:34 -0400 | [diff] [blame] | 67 | swap(inode1->i_flags, inode2->i_flags); |
| 68 | swap(inode1->i_version, inode2->i_version); |
| 69 | swap(inode1->i_blocks, inode2->i_blocks); |
| 70 | swap(inode1->i_bytes, inode2->i_bytes); |
| 71 | swap(inode1->i_atime, inode2->i_atime); |
| 72 | swap(inode1->i_mtime, inode2->i_mtime); |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 73 | |
| 74 | memswap(ei1->i_data, ei2->i_data, sizeof(ei1->i_data)); |
Jeff Layton | 9c5d58f | 2017-07-31 00:55:34 -0400 | [diff] [blame] | 75 | swap(ei1->i_flags, ei2->i_flags); |
| 76 | swap(ei1->i_disksize, ei2->i_disksize); |
Theodore Ts'o | cde2d7a | 2013-08-12 09:29:30 -0400 | [diff] [blame] | 77 | ext4_es_remove_extent(inode1, 0, EXT_MAX_BLOCKS); |
| 78 | ext4_es_remove_extent(inode2, 0, EXT_MAX_BLOCKS); |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 79 | |
| 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 | */ |
| 94 | static 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 Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 100 | struct ext4_inode_info *ei_bl; |
jon ernst | d7092ae | 2014-01-11 13:26:56 -0500 | [diff] [blame] | 101 | struct ext4_sb_info *sbi = EXT4_SB(sb); |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 102 | |
Theodore Ts'o | d8558a2 | 2014-02-17 20:44:36 -0500 | [diff] [blame] | 103 | if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode)) |
| 104 | return -EINVAL; |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 105 | |
Theodore Ts'o | d8558a2 | 2014-02-17 20:44:36 -0500 | [diff] [blame] | 106 | if (!inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN)) |
| 107 | return -EPERM; |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 108 | |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 109 | inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO); |
Theodore Ts'o | d8558a2 | 2014-02-17 20:44:36 -0500 | [diff] [blame] | 110 | if (IS_ERR(inode_bl)) |
| 111 | return PTR_ERR(inode_bl); |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 112 | 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 Fields | 375e289 | 2012-04-18 15:16:33 -0400 | [diff] [blame] | 119 | lock_two_nondirectories(inode, inode_bl); |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 120 | |
| 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 Liu | 30d29b1 | 2014-02-12 11:48:31 -0500 | [diff] [blame] | 133 | goto journal_err_out; |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 134 | } |
| 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. Wong | e2b911c | 2015-10-17 16:18:43 -0400 | [diff] [blame] | 149 | if (ext4_has_feature_extents(sb)) { |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 150 | 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 | |
Deepa Dinamani | eeca7ea | 2016-11-14 21:40:10 -0500 | [diff] [blame] | 158 | inode->i_ctime = inode_bl->i_ctime = current_time(inode); |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 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 Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 185 | ext4_journal_stop(handle); |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 186 | ext4_double_up_write_data_sem(inode, inode_bl); |
| 187 | |
Zheng Liu | 30d29b1 | 2014-02-12 11:48:31 -0500 | [diff] [blame] | 188 | journal_err_out: |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 189 | ext4_inode_resume_unlocked_dio(inode); |
| 190 | ext4_inode_resume_unlocked_dio(inode_bl); |
J. Bruce Fields | 375e289 | 2012-04-18 15:16:33 -0400 | [diff] [blame] | 191 | unlock_two_nondirectories(inode, inode_bl); |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 192 | iput(inode_bl); |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 193 | return err; |
| 194 | } |
| 195 | |
Eric Biggers | ba67901 | 2016-12-01 11:55:51 -0500 | [diff] [blame] | 196 | #ifdef CONFIG_EXT4_FS_ENCRYPTION |
Michael Halcrow | 9bd8212 | 2015-04-11 07:48:01 -0400 | [diff] [blame] | 197 | static int uuid_is_zero(__u8 u[16]) |
| 198 | { |
| 199 | int i; |
| 200 | |
| 201 | for (i = 0; i < 16; i++) |
| 202 | if (u[i]) |
| 203 | return 0; |
| 204 | return 1; |
| 205 | } |
Eric Biggers | ba67901 | 2016-12-01 11:55:51 -0500 | [diff] [blame] | 206 | #endif |
Michael Halcrow | 9bd8212 | 2015-04-11 07:48:01 -0400 | [diff] [blame] | 207 | |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 208 | static int ext4_ioctl_setflags(struct inode *inode, |
| 209 | unsigned int flags) |
| 210 | { |
| 211 | struct ext4_inode_info *ei = EXT4_I(inode); |
| 212 | handle_t *handle = NULL; |
Anton Protopopov | fdde368 | 2016-02-11 23:57:21 -0500 | [diff] [blame] | 213 | int err = -EPERM, migrate = 0; |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 214 | struct ext4_iloc iloc; |
| 215 | unsigned int oldflags, mask, i; |
| 216 | unsigned int jflag; |
| 217 | |
| 218 | /* Is it quota file? Do not allow user to mess with it */ |
Tahsin Erdogan | 02749a4 | 2017-06-22 11:31:25 -0400 | [diff] [blame] | 219 | if (ext4_is_quota_file(inode)) |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 220 | goto flags_out; |
| 221 | |
| 222 | oldflags = ei->i_flags; |
| 223 | |
| 224 | /* The JOURNAL_DATA flag is modifiable only by root */ |
| 225 | jflag = flags & EXT4_JOURNAL_DATA_FL; |
| 226 | |
| 227 | /* |
| 228 | * The IMMUTABLE and APPEND_ONLY flags can only be changed by |
| 229 | * the relevant capability. |
| 230 | * |
| 231 | * This test looks nicer. Thanks to Pauline Middelink |
| 232 | */ |
| 233 | if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) { |
| 234 | if (!capable(CAP_LINUX_IMMUTABLE)) |
| 235 | goto flags_out; |
| 236 | } |
| 237 | |
| 238 | /* |
| 239 | * The JOURNAL_DATA flag can only be changed by |
| 240 | * the relevant capability. |
| 241 | */ |
| 242 | if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { |
| 243 | if (!capable(CAP_SYS_RESOURCE)) |
| 244 | goto flags_out; |
| 245 | } |
| 246 | if ((flags ^ oldflags) & EXT4_EXTENTS_FL) |
| 247 | migrate = 1; |
| 248 | |
| 249 | if (flags & EXT4_EOFBLOCKS_FL) { |
| 250 | /* we don't support adding EOFBLOCKS flag */ |
| 251 | if (!(oldflags & EXT4_EOFBLOCKS_FL)) { |
| 252 | err = -EOPNOTSUPP; |
| 253 | goto flags_out; |
| 254 | } |
Theodore Ts'o | 2c98eb5 | 2016-11-13 22:02:26 -0500 | [diff] [blame] | 255 | } else if (oldflags & EXT4_EOFBLOCKS_FL) { |
| 256 | err = ext4_truncate(inode); |
| 257 | if (err) |
| 258 | goto flags_out; |
| 259 | } |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 260 | |
| 261 | handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); |
| 262 | if (IS_ERR(handle)) { |
| 263 | err = PTR_ERR(handle); |
| 264 | goto flags_out; |
| 265 | } |
| 266 | if (IS_SYNC(inode)) |
| 267 | ext4_handle_sync(handle); |
| 268 | err = ext4_reserve_inode_write(handle, inode, &iloc); |
| 269 | if (err) |
| 270 | goto flags_err; |
| 271 | |
| 272 | for (i = 0, mask = 1; i < 32; i++, mask <<= 1) { |
| 273 | if (!(mask & EXT4_FL_USER_MODIFIABLE)) |
| 274 | continue; |
Jan Kara | f8011d9 | 2016-11-29 11:13:13 -0500 | [diff] [blame] | 275 | /* These flags get special treatment later */ |
| 276 | if (mask == EXT4_JOURNAL_DATA_FL || mask == EXT4_EXTENTS_FL) |
| 277 | continue; |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 278 | if (mask & flags) |
| 279 | ext4_set_inode_flag(inode, i); |
| 280 | else |
| 281 | ext4_clear_inode_flag(inode, i); |
| 282 | } |
| 283 | |
| 284 | ext4_set_inode_flags(inode); |
Deepa Dinamani | eeca7ea | 2016-11-14 21:40:10 -0500 | [diff] [blame] | 285 | inode->i_ctime = current_time(inode); |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 286 | |
| 287 | err = ext4_mark_iloc_dirty(handle, inode, &iloc); |
| 288 | flags_err: |
| 289 | ext4_journal_stop(handle); |
| 290 | if (err) |
| 291 | goto flags_out; |
| 292 | |
| 293 | if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) |
| 294 | err = ext4_change_inode_journal_flag(inode, jflag); |
| 295 | if (err) |
| 296 | goto flags_out; |
| 297 | if (migrate) { |
| 298 | if (flags & EXT4_EXTENTS_FL) |
| 299 | err = ext4_ext_migrate(inode); |
| 300 | else |
| 301 | err = ext4_ind_migrate(inode); |
| 302 | } |
| 303 | |
| 304 | flags_out: |
| 305 | return err; |
| 306 | } |
| 307 | |
| 308 | #ifdef CONFIG_QUOTA |
| 309 | static int ext4_ioctl_setproject(struct file *filp, __u32 projid) |
| 310 | { |
| 311 | struct inode *inode = file_inode(filp); |
| 312 | struct super_block *sb = inode->i_sb; |
| 313 | struct ext4_inode_info *ei = EXT4_I(inode); |
| 314 | int err, rc; |
| 315 | handle_t *handle; |
| 316 | kprojid_t kprojid; |
| 317 | struct ext4_iloc iloc; |
| 318 | struct ext4_inode *raw_inode; |
Wang Shilong | 079788d | 2016-07-05 21:33:52 -0400 | [diff] [blame] | 319 | struct dquot *transfer_to[MAXQUOTAS] = { }; |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 320 | |
Kaho Ng | 0b7b777 | 2016-09-05 23:11:58 -0400 | [diff] [blame] | 321 | if (!ext4_has_feature_project(sb)) { |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 322 | if (projid != EXT4_DEF_PROJID) |
| 323 | return -EOPNOTSUPP; |
| 324 | else |
| 325 | return 0; |
| 326 | } |
| 327 | |
| 328 | if (EXT4_INODE_SIZE(sb) <= EXT4_GOOD_OLD_INODE_SIZE) |
| 329 | return -EOPNOTSUPP; |
| 330 | |
| 331 | kprojid = make_kprojid(&init_user_ns, (projid_t)projid); |
| 332 | |
| 333 | if (projid_eq(kprojid, EXT4_I(inode)->i_projid)) |
| 334 | return 0; |
| 335 | |
| 336 | err = mnt_want_write_file(filp); |
| 337 | if (err) |
| 338 | return err; |
| 339 | |
| 340 | err = -EPERM; |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 341 | inode_lock(inode); |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 342 | /* Is it quota file? Do not allow user to mess with it */ |
Tahsin Erdogan | 02749a4 | 2017-06-22 11:31:25 -0400 | [diff] [blame] | 343 | if (ext4_is_quota_file(inode)) |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 344 | goto out_unlock; |
| 345 | |
| 346 | err = ext4_get_inode_loc(inode, &iloc); |
| 347 | if (err) |
| 348 | goto out_unlock; |
| 349 | |
| 350 | raw_inode = ext4_raw_inode(&iloc); |
| 351 | if (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) { |
Miao Xie | c03b45b | 2017-08-06 01:00:49 -0400 | [diff] [blame] | 352 | err = ext4_expand_extra_isize(inode, |
| 353 | EXT4_SB(sb)->s_want_extra_isize, |
| 354 | &iloc); |
| 355 | if (err) |
| 356 | goto out_unlock; |
| 357 | } else { |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 358 | brelse(iloc.bh); |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 359 | } |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 360 | |
| 361 | dquot_initialize(inode); |
| 362 | |
| 363 | handle = ext4_journal_start(inode, EXT4_HT_QUOTA, |
| 364 | EXT4_QUOTA_INIT_BLOCKS(sb) + |
| 365 | EXT4_QUOTA_DEL_BLOCKS(sb) + 3); |
| 366 | if (IS_ERR(handle)) { |
| 367 | err = PTR_ERR(handle); |
| 368 | goto out_unlock; |
| 369 | } |
| 370 | |
| 371 | err = ext4_reserve_inode_write(handle, inode, &iloc); |
| 372 | if (err) |
| 373 | goto out_stop; |
| 374 | |
Wang Shilong | 079788d | 2016-07-05 21:33:52 -0400 | [diff] [blame] | 375 | transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); |
| 376 | if (!IS_ERR(transfer_to[PRJQUOTA])) { |
Tahsin Erdogan | 7a9ca53 | 2017-06-22 11:46:48 -0400 | [diff] [blame] | 377 | |
| 378 | /* __dquot_transfer() calls back ext4_get_inode_usage() which |
| 379 | * counts xattr inode references. |
| 380 | */ |
| 381 | down_read(&EXT4_I(inode)->xattr_sem); |
Wang Shilong | 079788d | 2016-07-05 21:33:52 -0400 | [diff] [blame] | 382 | err = __dquot_transfer(inode, transfer_to); |
Tahsin Erdogan | 7a9ca53 | 2017-06-22 11:46:48 -0400 | [diff] [blame] | 383 | up_read(&EXT4_I(inode)->xattr_sem); |
Wang Shilong | 079788d | 2016-07-05 21:33:52 -0400 | [diff] [blame] | 384 | dqput(transfer_to[PRJQUOTA]); |
| 385 | if (err) |
| 386 | goto out_dirty; |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 387 | } |
Wang Shilong | 079788d | 2016-07-05 21:33:52 -0400 | [diff] [blame] | 388 | |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 389 | EXT4_I(inode)->i_projid = kprojid; |
Deepa Dinamani | eeca7ea | 2016-11-14 21:40:10 -0500 | [diff] [blame] | 390 | inode->i_ctime = current_time(inode); |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 391 | out_dirty: |
| 392 | rc = ext4_mark_iloc_dirty(handle, inode, &iloc); |
| 393 | if (!err) |
| 394 | err = rc; |
| 395 | out_stop: |
| 396 | ext4_journal_stop(handle); |
| 397 | out_unlock: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 398 | inode_unlock(inode); |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 399 | mnt_drop_write_file(filp); |
| 400 | return err; |
| 401 | } |
| 402 | #else |
| 403 | static int ext4_ioctl_setproject(struct file *filp, __u32 projid) |
| 404 | { |
| 405 | if (projid != EXT4_DEF_PROJID) |
| 406 | return -EOPNOTSUPP; |
| 407 | return 0; |
| 408 | } |
| 409 | #endif |
| 410 | |
| 411 | /* Transfer internal flags to xflags */ |
| 412 | static inline __u32 ext4_iflags_to_xflags(unsigned long iflags) |
| 413 | { |
| 414 | __u32 xflags = 0; |
| 415 | |
| 416 | if (iflags & EXT4_SYNC_FL) |
| 417 | xflags |= FS_XFLAG_SYNC; |
| 418 | if (iflags & EXT4_IMMUTABLE_FL) |
| 419 | xflags |= FS_XFLAG_IMMUTABLE; |
| 420 | if (iflags & EXT4_APPEND_FL) |
| 421 | xflags |= FS_XFLAG_APPEND; |
| 422 | if (iflags & EXT4_NODUMP_FL) |
| 423 | xflags |= FS_XFLAG_NODUMP; |
| 424 | if (iflags & EXT4_NOATIME_FL) |
| 425 | xflags |= FS_XFLAG_NOATIME; |
| 426 | if (iflags & EXT4_PROJINHERIT_FL) |
| 427 | xflags |= FS_XFLAG_PROJINHERIT; |
| 428 | return xflags; |
| 429 | } |
| 430 | |
Jan Kara | d14e768 | 2016-11-29 11:18:39 -0500 | [diff] [blame] | 431 | #define EXT4_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \ |
| 432 | FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \ |
| 433 | FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT) |
| 434 | |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 435 | /* Transfer xflags flags to internal */ |
| 436 | static inline unsigned long ext4_xflags_to_iflags(__u32 xflags) |
| 437 | { |
| 438 | unsigned long iflags = 0; |
| 439 | |
| 440 | if (xflags & FS_XFLAG_SYNC) |
| 441 | iflags |= EXT4_SYNC_FL; |
| 442 | if (xflags & FS_XFLAG_IMMUTABLE) |
| 443 | iflags |= EXT4_IMMUTABLE_FL; |
| 444 | if (xflags & FS_XFLAG_APPEND) |
| 445 | iflags |= EXT4_APPEND_FL; |
| 446 | if (xflags & FS_XFLAG_NODUMP) |
| 447 | iflags |= EXT4_NODUMP_FL; |
| 448 | if (xflags & FS_XFLAG_NOATIME) |
| 449 | iflags |= EXT4_NOATIME_FL; |
| 450 | if (xflags & FS_XFLAG_PROJINHERIT) |
| 451 | iflags |= EXT4_PROJINHERIT_FL; |
| 452 | |
| 453 | return iflags; |
| 454 | } |
| 455 | |
Eric Biggers | 1a20a630 | 2017-04-30 00:40:44 -0400 | [diff] [blame] | 456 | static int ext4_shutdown(struct super_block *sb, unsigned long arg) |
Theodore Ts'o | 783d948 | 2017-02-05 19:47:14 -0500 | [diff] [blame] | 457 | { |
| 458 | struct ext4_sb_info *sbi = EXT4_SB(sb); |
| 459 | __u32 flags; |
| 460 | |
| 461 | if (!capable(CAP_SYS_ADMIN)) |
| 462 | return -EPERM; |
| 463 | |
| 464 | if (get_user(flags, (__u32 __user *)arg)) |
| 465 | return -EFAULT; |
| 466 | |
| 467 | if (flags > EXT4_GOING_FLAGS_NOLOGFLUSH) |
| 468 | return -EINVAL; |
| 469 | |
| 470 | if (ext4_forced_shutdown(sbi)) |
| 471 | return 0; |
| 472 | |
| 473 | ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags); |
| 474 | |
| 475 | switch (flags) { |
| 476 | case EXT4_GOING_FLAGS_DEFAULT: |
| 477 | freeze_bdev(sb->s_bdev); |
| 478 | set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); |
| 479 | thaw_bdev(sb->s_bdev, sb); |
| 480 | break; |
| 481 | case EXT4_GOING_FLAGS_LOGFLUSH: |
| 482 | set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); |
| 483 | if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { |
| 484 | (void) ext4_force_commit(sb); |
| 485 | jbd2_journal_abort(sbi->s_journal, 0); |
| 486 | } |
| 487 | break; |
| 488 | case EXT4_GOING_FLAGS_NOLOGFLUSH: |
| 489 | set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); |
| 490 | if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { |
| 491 | msleep(100); |
| 492 | jbd2_journal_abort(sbi->s_journal, 0); |
| 493 | } |
| 494 | break; |
| 495 | default: |
| 496 | return -EINVAL; |
| 497 | } |
| 498 | clear_opt(sb, DISCARD); |
| 499 | return 0; |
| 500 | } |
| 501 | |
Darrick J. Wong | 0c9ec4b | 2017-04-30 00:36:53 -0400 | [diff] [blame] | 502 | struct getfsmap_info { |
| 503 | struct super_block *gi_sb; |
| 504 | struct fsmap_head __user *gi_data; |
| 505 | unsigned int gi_idx; |
| 506 | __u32 gi_last_flags; |
| 507 | }; |
| 508 | |
| 509 | static int ext4_getfsmap_format(struct ext4_fsmap *xfm, void *priv) |
| 510 | { |
| 511 | struct getfsmap_info *info = priv; |
| 512 | struct fsmap fm; |
| 513 | |
| 514 | trace_ext4_getfsmap_mapping(info->gi_sb, xfm); |
| 515 | |
| 516 | info->gi_last_flags = xfm->fmr_flags; |
| 517 | ext4_fsmap_from_internal(info->gi_sb, &fm, xfm); |
| 518 | if (copy_to_user(&info->gi_data->fmh_recs[info->gi_idx++], &fm, |
| 519 | sizeof(struct fsmap))) |
| 520 | return -EFAULT; |
| 521 | |
| 522 | return 0; |
| 523 | } |
| 524 | |
| 525 | static int ext4_ioc_getfsmap(struct super_block *sb, |
| 526 | struct fsmap_head __user *arg) |
| 527 | { |
| 528 | struct getfsmap_info info = {0}; |
| 529 | struct ext4_fsmap_head xhead = {0}; |
| 530 | struct fsmap_head head; |
| 531 | bool aborted = false; |
| 532 | int error; |
| 533 | |
| 534 | if (copy_from_user(&head, arg, sizeof(struct fsmap_head))) |
| 535 | return -EFAULT; |
| 536 | if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) || |
| 537 | memchr_inv(head.fmh_keys[0].fmr_reserved, 0, |
| 538 | sizeof(head.fmh_keys[0].fmr_reserved)) || |
| 539 | memchr_inv(head.fmh_keys[1].fmr_reserved, 0, |
| 540 | sizeof(head.fmh_keys[1].fmr_reserved))) |
| 541 | return -EINVAL; |
| 542 | /* |
| 543 | * ext4 doesn't report file extents at all, so the only valid |
| 544 | * file offsets are the magic ones (all zeroes or all ones). |
| 545 | */ |
| 546 | if (head.fmh_keys[0].fmr_offset || |
| 547 | (head.fmh_keys[1].fmr_offset != 0 && |
| 548 | head.fmh_keys[1].fmr_offset != -1ULL)) |
| 549 | return -EINVAL; |
| 550 | |
| 551 | xhead.fmh_iflags = head.fmh_iflags; |
| 552 | xhead.fmh_count = head.fmh_count; |
| 553 | ext4_fsmap_to_internal(sb, &xhead.fmh_keys[0], &head.fmh_keys[0]); |
| 554 | ext4_fsmap_to_internal(sb, &xhead.fmh_keys[1], &head.fmh_keys[1]); |
| 555 | |
| 556 | trace_ext4_getfsmap_low_key(sb, &xhead.fmh_keys[0]); |
| 557 | trace_ext4_getfsmap_high_key(sb, &xhead.fmh_keys[1]); |
| 558 | |
| 559 | info.gi_sb = sb; |
| 560 | info.gi_data = arg; |
| 561 | error = ext4_getfsmap(sb, &xhead, ext4_getfsmap_format, &info); |
| 562 | if (error == EXT4_QUERY_RANGE_ABORT) { |
| 563 | error = 0; |
| 564 | aborted = true; |
| 565 | } else if (error) |
| 566 | return error; |
| 567 | |
| 568 | /* If we didn't abort, set the "last" flag in the last fmx */ |
| 569 | if (!aborted && info.gi_idx) { |
| 570 | info.gi_last_flags |= FMR_OF_LAST; |
| 571 | if (copy_to_user(&info.gi_data->fmh_recs[info.gi_idx - 1].fmr_flags, |
| 572 | &info.gi_last_flags, |
| 573 | sizeof(info.gi_last_flags))) |
| 574 | return -EFAULT; |
| 575 | } |
| 576 | |
| 577 | /* copy back header */ |
| 578 | head.fmh_entries = xhead.fmh_entries; |
| 579 | head.fmh_oflags = xhead.fmh_oflags; |
| 580 | if (copy_to_user(arg, &head, sizeof(struct fsmap_head))) |
| 581 | return -EFAULT; |
| 582 | |
| 583 | return 0; |
| 584 | } |
| 585 | |
Andi Kleen | 5cdd7b2 | 2008-04-29 22:03:54 -0400 | [diff] [blame] | 586 | long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 587 | { |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 588 | struct inode *inode = file_inode(filp); |
Theodore Ts'o | bab08ab | 2011-09-09 18:36:51 -0400 | [diff] [blame] | 589 | struct super_block *sb = inode->i_sb; |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 590 | struct ext4_inode_info *ei = EXT4_I(inode); |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 591 | unsigned int flags; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 592 | |
Theodore Ts'o | af5bc92 | 2008-09-08 22:25:24 -0400 | [diff] [blame] | 593 | ext4_debug("cmd = %u, arg = %lu\n", cmd, arg); |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 594 | |
| 595 | switch (cmd) { |
Darrick J. Wong | 0c9ec4b | 2017-04-30 00:36:53 -0400 | [diff] [blame] | 596 | case FS_IOC_GETFSMAP: |
| 597 | return ext4_ioc_getfsmap(sb, (void __user *)arg); |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 598 | case EXT4_IOC_GETFLAGS: |
| 599 | flags = ei->i_flags & EXT4_FL_USER_VISIBLE; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 600 | return put_user(flags, (int __user *) arg); |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 601 | case EXT4_IOC_SETFLAGS: { |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 602 | int err; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 603 | |
Serge E. Hallyn | 2e14967 | 2011-03-23 16:43:26 -0700 | [diff] [blame] | 604 | if (!inode_owner_or_capable(inode)) |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 605 | return -EACCES; |
| 606 | |
| 607 | if (get_user(flags, (int __user *) arg)) |
| 608 | return -EFAULT; |
| 609 | |
Jan Kara | d14e768 | 2016-11-29 11:18:39 -0500 | [diff] [blame] | 610 | if (flags & ~EXT4_FL_USER_VISIBLE) |
| 611 | return -EOPNOTSUPP; |
| 612 | /* |
| 613 | * chattr(1) grabs flags via GETFLAGS, modifies the result and |
| 614 | * passes that to SETFLAGS. So we cannot easily make SETFLAGS |
| 615 | * more restrictive than just silently masking off visible but |
| 616 | * not settable flags as we always did. |
| 617 | */ |
| 618 | flags &= EXT4_FL_USER_MODIFIABLE; |
| 619 | if (ext4_mask_flags(inode->i_mode, flags) != flags) |
| 620 | return -EOPNOTSUPP; |
| 621 | |
Al Viro | a561be7 | 2011-11-23 11:57:51 -0500 | [diff] [blame] | 622 | err = mnt_want_write_file(filp); |
Dave Hansen | 42a74f2 | 2008-02-15 14:37:46 -0800 | [diff] [blame] | 623 | if (err) |
| 624 | return err; |
| 625 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 626 | inode_lock(inode); |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 627 | err = ext4_ioctl_setflags(inode, flags); |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 628 | inode_unlock(inode); |
Al Viro | 2a79f17 | 2011-12-09 08:06:57 -0500 | [diff] [blame] | 629 | mnt_drop_write_file(filp); |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 630 | return err; |
| 631 | } |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 632 | case EXT4_IOC_GETVERSION: |
| 633 | case EXT4_IOC_GETVERSION_OLD: |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 634 | return put_user(inode->i_generation, (int __user *) arg); |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 635 | case EXT4_IOC_SETVERSION: |
| 636 | case EXT4_IOC_SETVERSION_OLD: { |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 637 | handle_t *handle; |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 638 | struct ext4_iloc iloc; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 639 | __u32 generation; |
| 640 | int err; |
| 641 | |
Serge E. Hallyn | 2e14967 | 2011-03-23 16:43:26 -0700 | [diff] [blame] | 642 | if (!inode_owner_or_capable(inode)) |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 643 | return -EPERM; |
Dave Hansen | 42a74f2 | 2008-02-15 14:37:46 -0800 | [diff] [blame] | 644 | |
Dmitry Monakhov | 9aa5d32b | 2014-10-13 03:36:16 -0400 | [diff] [blame] | 645 | if (ext4_has_metadata_csum(inode->i_sb)) { |
Darrick J. Wong | 814525f | 2012-04-29 18:31:10 -0400 | [diff] [blame] | 646 | ext4_warning(sb, "Setting inode version is not " |
| 647 | "supported with metadata_csum enabled."); |
| 648 | return -ENOTTY; |
| 649 | } |
| 650 | |
Al Viro | a561be7 | 2011-11-23 11:57:51 -0500 | [diff] [blame] | 651 | err = mnt_want_write_file(filp); |
Dave Hansen | 42a74f2 | 2008-02-15 14:37:46 -0800 | [diff] [blame] | 652 | if (err) |
| 653 | return err; |
| 654 | if (get_user(generation, (int __user *) arg)) { |
| 655 | err = -EFAULT; |
| 656 | goto setversion_out; |
| 657 | } |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 658 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 659 | inode_lock(inode); |
Theodore Ts'o | 9924a92 | 2013-02-08 21:59:22 -0500 | [diff] [blame] | 660 | handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); |
Dave Hansen | 42a74f2 | 2008-02-15 14:37:46 -0800 | [diff] [blame] | 661 | if (IS_ERR(handle)) { |
| 662 | err = PTR_ERR(handle); |
Djalal Harouni | 6c2155b | 2012-01-03 02:31:52 +0100 | [diff] [blame] | 663 | goto unlock_out; |
Dave Hansen | 42a74f2 | 2008-02-15 14:37:46 -0800 | [diff] [blame] | 664 | } |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 665 | err = ext4_reserve_inode_write(handle, inode, &iloc); |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 666 | if (err == 0) { |
Deepa Dinamani | eeca7ea | 2016-11-14 21:40:10 -0500 | [diff] [blame] | 667 | inode->i_ctime = current_time(inode); |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 668 | inode->i_generation = generation; |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 669 | err = ext4_mark_iloc_dirty(handle, inode, &iloc); |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 670 | } |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 671 | ext4_journal_stop(handle); |
Djalal Harouni | 6c2155b | 2012-01-03 02:31:52 +0100 | [diff] [blame] | 672 | |
| 673 | unlock_out: |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 674 | inode_unlock(inode); |
Dave Hansen | 42a74f2 | 2008-02-15 14:37:46 -0800 | [diff] [blame] | 675 | setversion_out: |
Al Viro | 2a79f17 | 2011-12-09 08:06:57 -0500 | [diff] [blame] | 676 | mnt_drop_write_file(filp); |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 677 | return err; |
| 678 | } |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 679 | case EXT4_IOC_GROUP_EXTEND: { |
| 680 | ext4_fsblk_t n_blocks_count; |
Peng Tao | ac046f1 | 2009-07-13 09:30:17 -0400 | [diff] [blame] | 681 | int err, err2=0; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 682 | |
Yongqiang Yang | 8f82f84 | 2011-07-26 21:35:44 -0400 | [diff] [blame] | 683 | err = ext4_resize_begin(sb); |
| 684 | if (err) |
| 685 | return err; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 686 | |
Djalal Harouni | 014a177 | 2012-01-04 17:09:52 -0500 | [diff] [blame] | 687 | if (get_user(n_blocks_count, (__u32 __user *)arg)) { |
| 688 | err = -EFAULT; |
| 689 | goto group_extend_out; |
| 690 | } |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 691 | |
Darrick J. Wong | e2b911c | 2015-10-17 16:18:43 -0400 | [diff] [blame] | 692 | if (ext4_has_feature_bigalloc(sb)) { |
Theodore Ts'o | bab08ab | 2011-09-09 18:36:51 -0400 | [diff] [blame] | 693 | ext4_msg(sb, KERN_ERR, |
| 694 | "Online resizing not supported with bigalloc"); |
Djalal Harouni | 014a177 | 2012-01-04 17:09:52 -0500 | [diff] [blame] | 695 | err = -EOPNOTSUPP; |
| 696 | goto group_extend_out; |
Theodore Ts'o | bab08ab | 2011-09-09 18:36:51 -0400 | [diff] [blame] | 697 | } |
| 698 | |
Al Viro | a561be7 | 2011-11-23 11:57:51 -0500 | [diff] [blame] | 699 | err = mnt_want_write_file(filp); |
Dave Hansen | 42a74f2 | 2008-02-15 14:37:46 -0800 | [diff] [blame] | 700 | if (err) |
Djalal Harouni | 014a177 | 2012-01-04 17:09:52 -0500 | [diff] [blame] | 701 | goto group_extend_out; |
Dave Hansen | 42a74f2 | 2008-02-15 14:37:46 -0800 | [diff] [blame] | 702 | |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 703 | err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count); |
Peng Tao | ac046f1 | 2009-07-13 09:30:17 -0400 | [diff] [blame] | 704 | if (EXT4_SB(sb)->s_journal) { |
| 705 | jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); |
| 706 | err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); |
| 707 | jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); |
| 708 | } |
Hidehiro Kawai | 7ffe1ea | 2008-10-10 20:29:21 -0400 | [diff] [blame] | 709 | if (err == 0) |
| 710 | err = err2; |
Al Viro | 2a79f17 | 2011-12-09 08:06:57 -0500 | [diff] [blame] | 711 | mnt_drop_write_file(filp); |
Djalal Harouni | 014a177 | 2012-01-04 17:09:52 -0500 | [diff] [blame] | 712 | group_extend_out: |
Yongqiang Yang | 8f82f84 | 2011-07-26 21:35:44 -0400 | [diff] [blame] | 713 | ext4_resize_end(sb); |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 714 | return err; |
| 715 | } |
Akira Fujita | 748de67 | 2009-06-17 19:24:03 -0400 | [diff] [blame] | 716 | |
| 717 | case EXT4_IOC_MOVE_EXT: { |
| 718 | struct move_extent me; |
Al Viro | 2903ff0 | 2012-08-28 12:52:22 -0400 | [diff] [blame] | 719 | struct fd donor; |
| 720 | int err; |
Akira Fujita | 748de67 | 2009-06-17 19:24:03 -0400 | [diff] [blame] | 721 | |
Akira Fujita | 4a58579 | 2009-12-06 23:38:31 -0500 | [diff] [blame] | 722 | if (!(filp->f_mode & FMODE_READ) || |
| 723 | !(filp->f_mode & FMODE_WRITE)) |
| 724 | return -EBADF; |
| 725 | |
Akira Fujita | 748de67 | 2009-06-17 19:24:03 -0400 | [diff] [blame] | 726 | if (copy_from_user(&me, |
| 727 | (struct move_extent __user *)arg, sizeof(me))) |
| 728 | return -EFAULT; |
Akira Fujita | 4a58579 | 2009-12-06 23:38:31 -0500 | [diff] [blame] | 729 | me.moved_len = 0; |
Akira Fujita | 748de67 | 2009-06-17 19:24:03 -0400 | [diff] [blame] | 730 | |
Al Viro | 2903ff0 | 2012-08-28 12:52:22 -0400 | [diff] [blame] | 731 | donor = fdget(me.donor_fd); |
| 732 | if (!donor.file) |
Akira Fujita | 748de67 | 2009-06-17 19:24:03 -0400 | [diff] [blame] | 733 | return -EBADF; |
| 734 | |
Al Viro | 2903ff0 | 2012-08-28 12:52:22 -0400 | [diff] [blame] | 735 | if (!(donor.file->f_mode & FMODE_WRITE)) { |
Akira Fujita | 4a58579 | 2009-12-06 23:38:31 -0500 | [diff] [blame] | 736 | err = -EBADF; |
| 737 | goto mext_out; |
Akira Fujita | 748de67 | 2009-06-17 19:24:03 -0400 | [diff] [blame] | 738 | } |
| 739 | |
Darrick J. Wong | e2b911c | 2015-10-17 16:18:43 -0400 | [diff] [blame] | 740 | if (ext4_has_feature_bigalloc(sb)) { |
Theodore Ts'o | bab08ab | 2011-09-09 18:36:51 -0400 | [diff] [blame] | 741 | ext4_msg(sb, KERN_ERR, |
| 742 | "Online defrag not supported with bigalloc"); |
Al Viro | 399c9b8 | 2012-08-26 21:00:03 -0400 | [diff] [blame] | 743 | err = -EOPNOTSUPP; |
| 744 | goto mext_out; |
Ross Zwisler | 73f34a5 | 2016-02-26 15:19:49 -0800 | [diff] [blame] | 745 | } else if (IS_DAX(inode)) { |
| 746 | ext4_msg(sb, KERN_ERR, |
| 747 | "Online defrag not supported with DAX"); |
| 748 | err = -EOPNOTSUPP; |
| 749 | goto mext_out; |
Theodore Ts'o | bab08ab | 2011-09-09 18:36:51 -0400 | [diff] [blame] | 750 | } |
| 751 | |
Al Viro | a561be7 | 2011-11-23 11:57:51 -0500 | [diff] [blame] | 752 | err = mnt_want_write_file(filp); |
Akira Fujita | 4a58579 | 2009-12-06 23:38:31 -0500 | [diff] [blame] | 753 | if (err) |
| 754 | goto mext_out; |
| 755 | |
Al Viro | 2903ff0 | 2012-08-28 12:52:22 -0400 | [diff] [blame] | 756 | err = ext4_move_extents(filp, donor.file, me.orig_start, |
Akira Fujita | 748de67 | 2009-06-17 19:24:03 -0400 | [diff] [blame] | 757 | me.donor_start, me.len, &me.moved_len); |
Al Viro | 2a79f17 | 2011-12-09 08:06:57 -0500 | [diff] [blame] | 758 | mnt_drop_write_file(filp); |
Akira Fujita | 748de67 | 2009-06-17 19:24:03 -0400 | [diff] [blame] | 759 | |
Theodore Ts'o | 60e6679 | 2010-05-17 07:00:00 -0400 | [diff] [blame] | 760 | if (copy_to_user((struct move_extent __user *)arg, |
Akira Fujita | c437b27 | 2010-03-04 00:39:24 -0500 | [diff] [blame] | 761 | &me, sizeof(me))) |
Akira Fujita | 4a58579 | 2009-12-06 23:38:31 -0500 | [diff] [blame] | 762 | err = -EFAULT; |
| 763 | mext_out: |
Al Viro | 2903ff0 | 2012-08-28 12:52:22 -0400 | [diff] [blame] | 764 | fdput(donor); |
Akira Fujita | 748de67 | 2009-06-17 19:24:03 -0400 | [diff] [blame] | 765 | return err; |
| 766 | } |
| 767 | |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 768 | case EXT4_IOC_GROUP_ADD: { |
| 769 | struct ext4_new_group_data input; |
Peng Tao | ac046f1 | 2009-07-13 09:30:17 -0400 | [diff] [blame] | 770 | int err, err2=0; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 771 | |
Yongqiang Yang | 8f82f84 | 2011-07-26 21:35:44 -0400 | [diff] [blame] | 772 | err = ext4_resize_begin(sb); |
| 773 | if (err) |
| 774 | return err; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 775 | |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 776 | if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg, |
Djalal Harouni | 014a177 | 2012-01-04 17:09:52 -0500 | [diff] [blame] | 777 | sizeof(input))) { |
| 778 | err = -EFAULT; |
| 779 | goto group_add_out; |
| 780 | } |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 781 | |
Darrick J. Wong | e2b911c | 2015-10-17 16:18:43 -0400 | [diff] [blame] | 782 | if (ext4_has_feature_bigalloc(sb)) { |
Theodore Ts'o | bab08ab | 2011-09-09 18:36:51 -0400 | [diff] [blame] | 783 | ext4_msg(sb, KERN_ERR, |
| 784 | "Online resizing not supported with bigalloc"); |
Djalal Harouni | 014a177 | 2012-01-04 17:09:52 -0500 | [diff] [blame] | 785 | err = -EOPNOTSUPP; |
| 786 | goto group_add_out; |
Theodore Ts'o | bab08ab | 2011-09-09 18:36:51 -0400 | [diff] [blame] | 787 | } |
| 788 | |
Al Viro | a561be7 | 2011-11-23 11:57:51 -0500 | [diff] [blame] | 789 | err = mnt_want_write_file(filp); |
Dave Hansen | 42a74f2 | 2008-02-15 14:37:46 -0800 | [diff] [blame] | 790 | if (err) |
Djalal Harouni | 014a177 | 2012-01-04 17:09:52 -0500 | [diff] [blame] | 791 | goto group_add_out; |
Dave Hansen | 42a74f2 | 2008-02-15 14:37:46 -0800 | [diff] [blame] | 792 | |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 793 | err = ext4_group_add(sb, &input); |
Peng Tao | ac046f1 | 2009-07-13 09:30:17 -0400 | [diff] [blame] | 794 | if (EXT4_SB(sb)->s_journal) { |
| 795 | jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); |
| 796 | err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); |
| 797 | jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); |
| 798 | } |
Hidehiro Kawai | 7ffe1ea | 2008-10-10 20:29:21 -0400 | [diff] [blame] | 799 | if (err == 0) |
| 800 | err = err2; |
Al Viro | 2a79f17 | 2011-12-09 08:06:57 -0500 | [diff] [blame] | 801 | mnt_drop_write_file(filp); |
Theodore Ts'o | 7f51186 | 2013-01-13 08:41:45 -0500 | [diff] [blame] | 802 | if (!err && ext4_has_group_desc_csum(sb) && |
| 803 | test_opt(sb, INIT_INODE_TABLE)) |
| 804 | err = ext4_register_li_request(sb, input.group); |
Djalal Harouni | 014a177 | 2012-01-04 17:09:52 -0500 | [diff] [blame] | 805 | group_add_out: |
Yongqiang Yang | 8f82f84 | 2011-07-26 21:35:44 -0400 | [diff] [blame] | 806 | ext4_resize_end(sb); |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 807 | return err; |
| 808 | } |
| 809 | |
Aneesh Kumar K.V | c14c6fd | 2008-01-28 23:58:26 -0500 | [diff] [blame] | 810 | case EXT4_IOC_MIGRATE: |
Aneesh Kumar K.V | 2a43a87 | 2008-09-13 12:52:26 -0400 | [diff] [blame] | 811 | { |
| 812 | int err; |
Serge E. Hallyn | 2e14967 | 2011-03-23 16:43:26 -0700 | [diff] [blame] | 813 | if (!inode_owner_or_capable(inode)) |
Aneesh Kumar K.V | 2a43a87 | 2008-09-13 12:52:26 -0400 | [diff] [blame] | 814 | return -EACCES; |
| 815 | |
Al Viro | a561be7 | 2011-11-23 11:57:51 -0500 | [diff] [blame] | 816 | err = mnt_want_write_file(filp); |
Aneesh Kumar K.V | 2a43a87 | 2008-09-13 12:52:26 -0400 | [diff] [blame] | 817 | if (err) |
| 818 | return err; |
| 819 | /* |
| 820 | * inode_mutex prevent write and truncate on the file. |
| 821 | * Read still goes through. We take i_data_sem in |
| 822 | * ext4_ext_swap_inode_data before we switch the |
| 823 | * inode format to prevent read. |
| 824 | */ |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 825 | inode_lock((inode)); |
Aneesh Kumar K.V | 2a43a87 | 2008-09-13 12:52:26 -0400 | [diff] [blame] | 826 | err = ext4_ext_migrate(inode); |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 827 | inode_unlock((inode)); |
Al Viro | 2a79f17 | 2011-12-09 08:06:57 -0500 | [diff] [blame] | 828 | mnt_drop_write_file(filp); |
Aneesh Kumar K.V | 2a43a87 | 2008-09-13 12:52:26 -0400 | [diff] [blame] | 829 | return err; |
| 830 | } |
Aneesh Kumar K.V | c14c6fd | 2008-01-28 23:58:26 -0500 | [diff] [blame] | 831 | |
Theodore Ts'o | ccd2506 | 2009-02-26 01:04:07 -0500 | [diff] [blame] | 832 | case EXT4_IOC_ALLOC_DA_BLKS: |
| 833 | { |
| 834 | int err; |
Serge E. Hallyn | 2e14967 | 2011-03-23 16:43:26 -0700 | [diff] [blame] | 835 | if (!inode_owner_or_capable(inode)) |
Theodore Ts'o | ccd2506 | 2009-02-26 01:04:07 -0500 | [diff] [blame] | 836 | return -EACCES; |
| 837 | |
Al Viro | a561be7 | 2011-11-23 11:57:51 -0500 | [diff] [blame] | 838 | err = mnt_want_write_file(filp); |
Theodore Ts'o | ccd2506 | 2009-02-26 01:04:07 -0500 | [diff] [blame] | 839 | if (err) |
| 840 | return err; |
| 841 | err = ext4_alloc_da_blocks(inode); |
Al Viro | 2a79f17 | 2011-12-09 08:06:57 -0500 | [diff] [blame] | 842 | mnt_drop_write_file(filp); |
Theodore Ts'o | ccd2506 | 2009-02-26 01:04:07 -0500 | [diff] [blame] | 843 | return err; |
| 844 | } |
| 845 | |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 846 | case EXT4_IOC_SWAP_BOOT: |
Dmitry Monakhov | 3e67cfad2 | 2014-10-03 12:47:23 -0400 | [diff] [blame] | 847 | { |
| 848 | int err; |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 849 | if (!(filp->f_mode & FMODE_WRITE)) |
| 850 | return -EBADF; |
Dmitry Monakhov | 3e67cfad2 | 2014-10-03 12:47:23 -0400 | [diff] [blame] | 851 | err = mnt_want_write_file(filp); |
| 852 | if (err) |
| 853 | return err; |
| 854 | err = swap_inode_boot_loader(sb, inode); |
| 855 | mnt_drop_write_file(filp); |
| 856 | return err; |
| 857 | } |
Dr. Tilmann Bubeck | 393d1d1 | 2013-04-08 12:54:05 -0400 | [diff] [blame] | 858 | |
Yongqiang Yang | 19c5246 | 2012-01-04 17:09:44 -0500 | [diff] [blame] | 859 | case EXT4_IOC_RESIZE_FS: { |
| 860 | ext4_fsblk_t n_blocks_count; |
Yongqiang Yang | 19c5246 | 2012-01-04 17:09:44 -0500 | [diff] [blame] | 861 | int err = 0, err2 = 0; |
Theodore Ts'o | 7f51186 | 2013-01-13 08:41:45 -0500 | [diff] [blame] | 862 | ext4_group_t o_group = EXT4_SB(sb)->s_groups_count; |
Yongqiang Yang | 19c5246 | 2012-01-04 17:09:44 -0500 | [diff] [blame] | 863 | |
Darrick J. Wong | e2b911c | 2015-10-17 16:18:43 -0400 | [diff] [blame] | 864 | if (ext4_has_feature_bigalloc(sb)) { |
Yongqiang Yang | 19c5246 | 2012-01-04 17:09:44 -0500 | [diff] [blame] | 865 | ext4_msg(sb, KERN_ERR, |
| 866 | "Online resizing not (yet) supported with bigalloc"); |
| 867 | return -EOPNOTSUPP; |
| 868 | } |
| 869 | |
Yongqiang Yang | 19c5246 | 2012-01-04 17:09:44 -0500 | [diff] [blame] | 870 | if (copy_from_user(&n_blocks_count, (__u64 __user *)arg, |
| 871 | sizeof(__u64))) { |
| 872 | return -EFAULT; |
| 873 | } |
| 874 | |
Yongqiang Yang | 19c5246 | 2012-01-04 17:09:44 -0500 | [diff] [blame] | 875 | err = ext4_resize_begin(sb); |
| 876 | if (err) |
| 877 | return err; |
| 878 | |
Al Viro | 8cae6f7 | 2012-07-19 11:19:07 +0400 | [diff] [blame] | 879 | err = mnt_want_write_file(filp); |
Yongqiang Yang | 19c5246 | 2012-01-04 17:09:44 -0500 | [diff] [blame] | 880 | if (err) |
| 881 | goto resizefs_out; |
| 882 | |
| 883 | err = ext4_resize_fs(sb, n_blocks_count); |
| 884 | if (EXT4_SB(sb)->s_journal) { |
| 885 | jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); |
| 886 | err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); |
| 887 | jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); |
| 888 | } |
| 889 | if (err == 0) |
| 890 | err = err2; |
Al Viro | 8cae6f7 | 2012-07-19 11:19:07 +0400 | [diff] [blame] | 891 | mnt_drop_write_file(filp); |
Theodore Ts'o | 7f51186 | 2013-01-13 08:41:45 -0500 | [diff] [blame] | 892 | if (!err && (o_group > EXT4_SB(sb)->s_groups_count) && |
| 893 | ext4_has_group_desc_csum(sb) && |
| 894 | test_opt(sb, INIT_INODE_TABLE)) |
| 895 | err = ext4_register_li_request(sb, o_group); |
| 896 | |
Yongqiang Yang | 19c5246 | 2012-01-04 17:09:44 -0500 | [diff] [blame] | 897 | resizefs_out: |
| 898 | ext4_resize_end(sb); |
| 899 | return err; |
| 900 | } |
| 901 | |
Lukas Czerner | e681c04 | 2010-11-19 21:47:07 -0500 | [diff] [blame] | 902 | case FITRIM: |
| 903 | { |
Lukas Czerner | 4143179 | 2011-02-23 12:42:32 -0500 | [diff] [blame] | 904 | struct request_queue *q = bdev_get_queue(sb->s_bdev); |
Lukas Czerner | e681c04 | 2010-11-19 21:47:07 -0500 | [diff] [blame] | 905 | struct fstrim_range range; |
| 906 | int ret = 0; |
| 907 | |
| 908 | if (!capable(CAP_SYS_ADMIN)) |
| 909 | return -EPERM; |
| 910 | |
Lukas Czerner | 4143179 | 2011-02-23 12:42:32 -0500 | [diff] [blame] | 911 | if (!blk_queue_discard(q)) |
| 912 | return -EOPNOTSUPP; |
| 913 | |
H Hartley Sweeten | e6705f7 | 2011-10-18 10:59:51 -0400 | [diff] [blame] | 914 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
Lukas Czerner | e681c04 | 2010-11-19 21:47:07 -0500 | [diff] [blame] | 915 | sizeof(range))) |
| 916 | return -EFAULT; |
| 917 | |
Lukas Czerner | 5c2ed62 | 2011-02-23 17:49:51 -0500 | [diff] [blame] | 918 | range.minlen = max((unsigned int)range.minlen, |
| 919 | q->limits.discard_granularity); |
Lukas Czerner | e681c04 | 2010-11-19 21:47:07 -0500 | [diff] [blame] | 920 | ret = ext4_trim_fs(sb, &range); |
| 921 | if (ret < 0) |
| 922 | return ret; |
| 923 | |
H Hartley Sweeten | e6705f7 | 2011-10-18 10:59:51 -0400 | [diff] [blame] | 924 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
Lukas Czerner | e681c04 | 2010-11-19 21:47:07 -0500 | [diff] [blame] | 925 | sizeof(range))) |
| 926 | return -EFAULT; |
| 927 | |
| 928 | return 0; |
| 929 | } |
Theodore Ts'o | 7869a4a | 2013-08-16 22:05:14 -0400 | [diff] [blame] | 930 | case EXT4_IOC_PRECACHE_EXTENTS: |
| 931 | return ext4_ext_precache(inode); |
Lukas Czerner | e681c04 | 2010-11-19 21:47:07 -0500 | [diff] [blame] | 932 | |
Eric Biggers | db717d8 | 2016-11-26 19:07:49 -0500 | [diff] [blame] | 933 | case EXT4_IOC_SET_ENCRYPTION_POLICY: |
Richard Weinberger | 9a200d0 | 2016-09-30 01:49:55 -0400 | [diff] [blame] | 934 | if (!ext4_has_feature_encrypt(sb)) |
| 935 | return -EOPNOTSUPP; |
Eric Biggers | db717d8 | 2016-11-26 19:07:49 -0500 | [diff] [blame] | 936 | return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); |
Richard Weinberger | 9a200d0 | 2016-09-30 01:49:55 -0400 | [diff] [blame] | 937 | |
Michael Halcrow | 9bd8212 | 2015-04-11 07:48:01 -0400 | [diff] [blame] | 938 | case EXT4_IOC_GET_ENCRYPTION_PWSALT: { |
Eric Biggers | ba67901 | 2016-12-01 11:55:51 -0500 | [diff] [blame] | 939 | #ifdef CONFIG_EXT4_FS_ENCRYPTION |
Michael Halcrow | 9bd8212 | 2015-04-11 07:48:01 -0400 | [diff] [blame] | 940 | int err, err2; |
| 941 | struct ext4_sb_info *sbi = EXT4_SB(sb); |
| 942 | handle_t *handle; |
| 943 | |
Eric Biggers | 35997d1 | 2016-12-01 11:54:18 -0500 | [diff] [blame] | 944 | if (!ext4_has_feature_encrypt(sb)) |
Michael Halcrow | 9bd8212 | 2015-04-11 07:48:01 -0400 | [diff] [blame] | 945 | return -EOPNOTSUPP; |
| 946 | if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) { |
| 947 | err = mnt_want_write_file(filp); |
| 948 | if (err) |
| 949 | return err; |
| 950 | handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1); |
| 951 | if (IS_ERR(handle)) { |
| 952 | err = PTR_ERR(handle); |
| 953 | goto pwsalt_err_exit; |
| 954 | } |
| 955 | err = ext4_journal_get_write_access(handle, sbi->s_sbh); |
| 956 | if (err) |
| 957 | goto pwsalt_err_journal; |
| 958 | generate_random_uuid(sbi->s_es->s_encrypt_pw_salt); |
| 959 | err = ext4_handle_dirty_metadata(handle, NULL, |
| 960 | sbi->s_sbh); |
| 961 | pwsalt_err_journal: |
| 962 | err2 = ext4_journal_stop(handle); |
| 963 | if (err2 && !err) |
| 964 | err = err2; |
| 965 | pwsalt_err_exit: |
| 966 | mnt_drop_write_file(filp); |
| 967 | if (err) |
| 968 | return err; |
| 969 | } |
Fabian Frederick | b4ab9e2 | 2015-06-08 12:23:21 -0400 | [diff] [blame] | 970 | if (copy_to_user((void __user *) arg, |
| 971 | sbi->s_es->s_encrypt_pw_salt, 16)) |
Michael Halcrow | 9bd8212 | 2015-04-11 07:48:01 -0400 | [diff] [blame] | 972 | return -EFAULT; |
| 973 | return 0; |
Eric Biggers | ba67901 | 2016-12-01 11:55:51 -0500 | [diff] [blame] | 974 | #else |
| 975 | return -EOPNOTSUPP; |
| 976 | #endif |
Michael Halcrow | 9bd8212 | 2015-04-11 07:48:01 -0400 | [diff] [blame] | 977 | } |
Eric Biggers | db717d8 | 2016-11-26 19:07:49 -0500 | [diff] [blame] | 978 | case EXT4_IOC_GET_ENCRYPTION_POLICY: |
| 979 | return fscrypt_ioctl_get_policy(filp, (void __user *)arg); |
Michael Halcrow | 9bd8212 | 2015-04-11 07:48:01 -0400 | [diff] [blame] | 980 | |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 981 | case EXT4_IOC_FSGETXATTR: |
| 982 | { |
| 983 | struct fsxattr fa; |
| 984 | |
| 985 | memset(&fa, 0, sizeof(struct fsxattr)); |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 986 | fa.fsx_xflags = ext4_iflags_to_xflags(ei->i_flags & EXT4_FL_USER_VISIBLE); |
| 987 | |
Kaho Ng | 0b7b777 | 2016-09-05 23:11:58 -0400 | [diff] [blame] | 988 | if (ext4_has_feature_project(inode->i_sb)) { |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 989 | fa.fsx_projid = (__u32)from_kprojid(&init_user_ns, |
| 990 | EXT4_I(inode)->i_projid); |
| 991 | } |
| 992 | |
| 993 | if (copy_to_user((struct fsxattr __user *)arg, |
| 994 | &fa, sizeof(fa))) |
| 995 | return -EFAULT; |
| 996 | return 0; |
| 997 | } |
| 998 | case EXT4_IOC_FSSETXATTR: |
| 999 | { |
| 1000 | struct fsxattr fa; |
| 1001 | int err; |
| 1002 | |
| 1003 | if (copy_from_user(&fa, (struct fsxattr __user *)arg, |
| 1004 | sizeof(fa))) |
| 1005 | return -EFAULT; |
| 1006 | |
| 1007 | /* Make sure caller has proper permission */ |
| 1008 | if (!inode_owner_or_capable(inode)) |
| 1009 | return -EACCES; |
| 1010 | |
Jan Kara | d14e768 | 2016-11-29 11:18:39 -0500 | [diff] [blame] | 1011 | if (fa.fsx_xflags & ~EXT4_SUPPORTED_FS_XFLAGS) |
| 1012 | return -EOPNOTSUPP; |
| 1013 | |
| 1014 | flags = ext4_xflags_to_iflags(fa.fsx_xflags); |
| 1015 | if (ext4_mask_flags(inode->i_mode, flags) != flags) |
| 1016 | return -EOPNOTSUPP; |
| 1017 | |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 1018 | err = mnt_want_write_file(filp); |
| 1019 | if (err) |
| 1020 | return err; |
| 1021 | |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1022 | inode_lock(inode); |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 1023 | flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) | |
| 1024 | (flags & EXT4_FL_XFLAG_VISIBLE); |
| 1025 | err = ext4_ioctl_setflags(inode, flags); |
Al Viro | 5955102 | 2016-01-22 15:40:57 -0500 | [diff] [blame] | 1026 | inode_unlock(inode); |
Li Xi | 9b7365f | 2016-01-08 16:01:22 -0500 | [diff] [blame] | 1027 | mnt_drop_write_file(filp); |
| 1028 | if (err) |
| 1029 | return err; |
| 1030 | |
| 1031 | err = ext4_ioctl_setproject(filp, fa.fsx_projid); |
| 1032 | if (err) |
| 1033 | return err; |
| 1034 | |
| 1035 | return 0; |
| 1036 | } |
Theodore Ts'o | e9be2ac | 2017-02-20 15:34:59 -0500 | [diff] [blame] | 1037 | case EXT4_IOC_SHUTDOWN: |
| 1038 | return ext4_shutdown(sb, arg); |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 1039 | default: |
| 1040 | return -ENOTTY; |
| 1041 | } |
| 1042 | } |
| 1043 | |
| 1044 | #ifdef CONFIG_COMPAT |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 1045 | long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 1046 | { |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 1047 | /* These are just misnamed, they actually get/put from/to user an int */ |
| 1048 | switch (cmd) { |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 1049 | case EXT4_IOC32_GETFLAGS: |
| 1050 | cmd = EXT4_IOC_GETFLAGS; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 1051 | break; |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 1052 | case EXT4_IOC32_SETFLAGS: |
| 1053 | cmd = EXT4_IOC_SETFLAGS; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 1054 | break; |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 1055 | case EXT4_IOC32_GETVERSION: |
| 1056 | cmd = EXT4_IOC_GETVERSION; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 1057 | break; |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 1058 | case EXT4_IOC32_SETVERSION: |
| 1059 | cmd = EXT4_IOC_SETVERSION; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 1060 | break; |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 1061 | case EXT4_IOC32_GROUP_EXTEND: |
| 1062 | cmd = EXT4_IOC_GROUP_EXTEND; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 1063 | break; |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 1064 | case EXT4_IOC32_GETVERSION_OLD: |
| 1065 | cmd = EXT4_IOC_GETVERSION_OLD; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 1066 | break; |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 1067 | case EXT4_IOC32_SETVERSION_OLD: |
| 1068 | cmd = EXT4_IOC_SETVERSION_OLD; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 1069 | break; |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 1070 | case EXT4_IOC32_GETRSVSZ: |
| 1071 | cmd = EXT4_IOC_GETRSVSZ; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 1072 | break; |
Mingming Cao | 617ba13 | 2006-10-11 01:20:53 -0700 | [diff] [blame] | 1073 | case EXT4_IOC32_SETRSVSZ: |
| 1074 | cmd = EXT4_IOC_SETRSVSZ; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 1075 | break; |
Ben Hutchings | 4d92dc0 | 2010-05-17 06:00:00 -0400 | [diff] [blame] | 1076 | case EXT4_IOC32_GROUP_ADD: { |
| 1077 | struct compat_ext4_new_group_input __user *uinput; |
| 1078 | struct ext4_new_group_input input; |
| 1079 | mm_segment_t old_fs; |
| 1080 | int err; |
| 1081 | |
| 1082 | uinput = compat_ptr(arg); |
| 1083 | err = get_user(input.group, &uinput->group); |
| 1084 | err |= get_user(input.block_bitmap, &uinput->block_bitmap); |
| 1085 | err |= get_user(input.inode_bitmap, &uinput->inode_bitmap); |
| 1086 | err |= get_user(input.inode_table, &uinput->inode_table); |
| 1087 | err |= get_user(input.blocks_count, &uinput->blocks_count); |
| 1088 | err |= get_user(input.reserved_blocks, |
| 1089 | &uinput->reserved_blocks); |
| 1090 | if (err) |
| 1091 | return -EFAULT; |
| 1092 | old_fs = get_fs(); |
| 1093 | set_fs(KERNEL_DS); |
| 1094 | err = ext4_ioctl(file, EXT4_IOC_GROUP_ADD, |
| 1095 | (unsigned long) &input); |
| 1096 | set_fs(old_fs); |
| 1097 | return err; |
| 1098 | } |
Christian Borntraeger | b684b2e | 2010-05-15 00:00:00 -0400 | [diff] [blame] | 1099 | case EXT4_IOC_MOVE_EXT: |
Yongqiang Yang | 19c5246 | 2012-01-04 17:09:44 -0500 | [diff] [blame] | 1100 | case EXT4_IOC_RESIZE_FS: |
Theodore Ts'o | 7869a4a | 2013-08-16 22:05:14 -0400 | [diff] [blame] | 1101 | case EXT4_IOC_PRECACHE_EXTENTS: |
Michael Halcrow | 9bd8212 | 2015-04-11 07:48:01 -0400 | [diff] [blame] | 1102 | case EXT4_IOC_SET_ENCRYPTION_POLICY: |
| 1103 | case EXT4_IOC_GET_ENCRYPTION_PWSALT: |
| 1104 | case EXT4_IOC_GET_ENCRYPTION_POLICY: |
Theodore Ts'o | e9be2ac | 2017-02-20 15:34:59 -0500 | [diff] [blame] | 1105 | case EXT4_IOC_SHUTDOWN: |
Darrick J. Wong | 0c9ec4b | 2017-04-30 00:36:53 -0400 | [diff] [blame] | 1106 | case FS_IOC_GETFSMAP: |
Christian Borntraeger | b684b2e | 2010-05-15 00:00:00 -0400 | [diff] [blame] | 1107 | break; |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 1108 | default: |
| 1109 | return -ENOIOCTLCMD; |
| 1110 | } |
Andi Kleen | 5cdd7b2 | 2008-04-29 22:03:54 -0400 | [diff] [blame] | 1111 | return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); |
Dave Kleikamp | ac27a0e | 2006-10-11 01:20:50 -0700 | [diff] [blame] | 1112 | } |
| 1113 | #endif |