1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * linux/fs/ext4/ioctl.c 4 * 5 * Copyright (C) 1993, 1994, 1995 6 * Remy Card (card@masi.ibp.fr) 7 * Laboratoire MASI - Institut Blaise Pascal 8 * Universite Pierre et Marie Curie (Paris VI) 9 */ 10 11 #include <linux/fs.h> 12 #include <linux/capability.h> 13 #include <linux/time.h> 14 #include <linux/compat.h> 15 #include <linux/mount.h> 16 #include <linux/file.h> 17 #include <linux/quotaops.h> 18 #include <linux/random.h> 19 #include <linux/uuid.h> 20 #include <linux/uaccess.h> 21 #include <linux/delay.h> 22 #include <linux/iversion.h> 23 #include "ext4_jbd2.h" 24 #include "ext4.h" 25 #include <linux/fsmap.h> 26 #include "fsmap.h" 27 #include <trace/events/ext4.h> 28 29 /** 30 * Swap memory between @a and @b for @len bytes. 31 * 32 * @a: pointer to first memory area 33 * @b: pointer to second memory area 34 * @len: number of bytes to swap 35 * 36 */ 37 static void memswap(void *a, void *b, size_t len) 38 { 39 unsigned char *ap, *bp; 40 41 ap = (unsigned char *)a; 42 bp = (unsigned char *)b; 43 while (len-- > 0) { 44 swap(*ap, *bp); 45 ap++; 46 bp++; 47 } 48 } 49 50 /** 51 * Swap i_data and associated attributes between @inode1 and @inode2. 52 * This function is used for the primary swap between inode1 and inode2 53 * and also to revert this primary swap in case of errors. 54 * 55 * Therefore you have to make sure, that calling this method twice 56 * will revert all changes. 57 * 58 * @inode1: pointer to first inode 59 * @inode2: pointer to second inode 60 */ 61 static void swap_inode_data(struct inode *inode1, struct inode *inode2) 62 { 63 loff_t isize; 64 struct ext4_inode_info *ei1; 65 struct ext4_inode_info *ei2; 66 unsigned long tmp; 67 68 ei1 = EXT4_I(inode1); 69 ei2 = EXT4_I(inode2); 70 71 swap(inode1->i_version, inode2->i_version); 72 swap(inode1->i_atime, inode2->i_atime); 73 swap(inode1->i_mtime, inode2->i_mtime); 74 75 memswap(ei1->i_data, ei2->i_data, sizeof(ei1->i_data)); 76 tmp = ei1->i_flags & EXT4_FL_SHOULD_SWAP; 77 ei1->i_flags = (ei2->i_flags & EXT4_FL_SHOULD_SWAP) | 78 (ei1->i_flags & ~EXT4_FL_SHOULD_SWAP); 79 ei2->i_flags = tmp | (ei2->i_flags & ~EXT4_FL_SHOULD_SWAP); 80 swap(ei1->i_disksize, ei2->i_disksize); 81 ext4_es_remove_extent(inode1, 0, EXT_MAX_BLOCKS); 82 ext4_es_remove_extent(inode2, 0, EXT_MAX_BLOCKS); 83 84 isize = i_size_read(inode1); 85 i_size_write(inode1, i_size_read(inode2)); 86 i_size_write(inode2, isize); 87 } 88 89 static void reset_inode_seed(struct inode *inode) 90 { 91 struct ext4_inode_info *ei = EXT4_I(inode); 92 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); 93 __le32 inum = cpu_to_le32(inode->i_ino); 94 __le32 gen = cpu_to_le32(inode->i_generation); 95 __u32 csum; 96 97 if (!ext4_has_metadata_csum(inode->i_sb)) 98 return; 99 100 csum = ext4_chksum(sbi, sbi->s_csum_seed, (__u8 *)&inum, sizeof(inum)); 101 ei->i_csum_seed = ext4_chksum(sbi, csum, (__u8 *)&gen, sizeof(gen)); 102 } 103 104 /** 105 * Swap the information from the given @inode and the inode 106 * EXT4_BOOT_LOADER_INO. It will basically swap i_data and all other 107 * important fields of the inodes. 108 * 109 * @sb: the super block of the filesystem 110 * @inode: the inode to swap with EXT4_BOOT_LOADER_INO 111 * 112 */ 113 static long swap_inode_boot_loader(struct super_block *sb, 114 struct inode *inode) 115 { 116 handle_t *handle; 117 int err; 118 struct inode *inode_bl; 119 struct ext4_inode_info *ei_bl; 120 qsize_t size, size_bl, diff; 121 blkcnt_t blocks; 122 unsigned short bytes; 123 124 inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO, EXT4_IGET_SPECIAL); 125 if (IS_ERR(inode_bl)) 126 return PTR_ERR(inode_bl); 127 ei_bl = EXT4_I(inode_bl); 128 129 /* Protect orig inodes against a truncate and make sure, 130 * that only 1 swap_inode_boot_loader is running. */ 131 lock_two_nondirectories(inode, inode_bl); 132 133 if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode) || 134 IS_SWAPFILE(inode) || IS_ENCRYPTED(inode) || 135 (EXT4_I(inode)->i_flags & EXT4_JOURNAL_DATA_FL) || 136 ext4_has_inline_data(inode)) { 137 err = -EINVAL; 138 goto journal_err_out; 139 } 140 141 if (IS_RDONLY(inode) || IS_APPEND(inode) || IS_IMMUTABLE(inode) || 142 !inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN)) { 143 err = -EPERM; 144 goto journal_err_out; 145 } 146 147 down_write(&EXT4_I(inode)->i_mmap_sem); 148 err = filemap_write_and_wait(inode->i_mapping); 149 if (err) 150 goto err_out; 151 152 err = filemap_write_and_wait(inode_bl->i_mapping); 153 if (err) 154 goto err_out; 155 156 /* Wait for all existing dio workers */ 157 inode_dio_wait(inode); 158 inode_dio_wait(inode_bl); 159 160 truncate_inode_pages(&inode->i_data, 0); 161 truncate_inode_pages(&inode_bl->i_data, 0); 162 163 handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2); 164 if (IS_ERR(handle)) { 165 err = -EINVAL; 166 goto err_out; 167 } 168 169 /* Protect extent tree against block allocations via delalloc */ 170 ext4_double_down_write_data_sem(inode, inode_bl); 171 172 if (inode_bl->i_nlink == 0) { 173 /* this inode has never been used as a BOOT_LOADER */ 174 set_nlink(inode_bl, 1); 175 i_uid_write(inode_bl, 0); 176 i_gid_write(inode_bl, 0); 177 inode_bl->i_flags = 0; 178 ei_bl->i_flags = 0; 179 inode_set_iversion(inode_bl, 1); 180 i_size_write(inode_bl, 0); 181 inode_bl->i_mode = S_IFREG; 182 if (ext4_has_feature_extents(sb)) { 183 ext4_set_inode_flag(inode_bl, EXT4_INODE_EXTENTS); 184 ext4_ext_tree_init(handle, inode_bl); 185 } else 186 memset(ei_bl->i_data, 0, sizeof(ei_bl->i_data)); 187 } 188 189 err = dquot_initialize(inode); 190 if (err) 191 goto err_out1; 192 193 size = (qsize_t)(inode->i_blocks) * (1 << 9) + inode->i_bytes; 194 size_bl = (qsize_t)(inode_bl->i_blocks) * (1 << 9) + inode_bl->i_bytes; 195 diff = size - size_bl; 196 swap_inode_data(inode, inode_bl); 197 198 inode->i_ctime = inode_bl->i_ctime = current_time(inode); 199 200 inode->i_generation = prandom_u32(); 201 inode_bl->i_generation = prandom_u32(); 202 reset_inode_seed(inode); 203 reset_inode_seed(inode_bl); 204 205 ext4_discard_preallocations(inode); 206 207 err = ext4_mark_inode_dirty(handle, inode); 208 if (err < 0) { 209 /* No need to update quota information. */ 210 ext4_warning(inode->i_sb, 211 "couldn't mark inode #%lu dirty (err %d)", 212 inode->i_ino, err); 213 /* Revert all changes: */ 214 swap_inode_data(inode, inode_bl); 215 ext4_mark_inode_dirty(handle, inode); 216 goto err_out1; 217 } 218 219 blocks = inode_bl->i_blocks; 220 bytes = inode_bl->i_bytes; 221 inode_bl->i_blocks = inode->i_blocks; 222 inode_bl->i_bytes = inode->i_bytes; 223 err = ext4_mark_inode_dirty(handle, inode_bl); 224 if (err < 0) { 225 /* No need to update quota information. */ 226 ext4_warning(inode_bl->i_sb, 227 "couldn't mark inode #%lu dirty (err %d)", 228 inode_bl->i_ino, err); 229 goto revert; 230 } 231 232 /* Bootloader inode should not be counted into quota information. */ 233 if (diff > 0) 234 dquot_free_space(inode, diff); 235 else 236 err = dquot_alloc_space(inode, -1 * diff); 237 238 if (err < 0) { 239 revert: 240 /* Revert all changes: */ 241 inode_bl->i_blocks = blocks; 242 inode_bl->i_bytes = bytes; 243 swap_inode_data(inode, inode_bl); 244 ext4_mark_inode_dirty(handle, inode); 245 ext4_mark_inode_dirty(handle, inode_bl); 246 } 247 248 err_out1: 249 ext4_journal_stop(handle); 250 ext4_double_up_write_data_sem(inode, inode_bl); 251 252 err_out: 253 up_write(&EXT4_I(inode)->i_mmap_sem); 254 journal_err_out: 255 unlock_two_nondirectories(inode, inode_bl); 256 iput(inode_bl); 257 return err; 258 } 259 260 #ifdef CONFIG_FS_ENCRYPTION 261 static int uuid_is_zero(__u8 u[16]) 262 { 263 int i; 264 265 for (i = 0; i < 16; i++) 266 if (u[i]) 267 return 0; 268 return 1; 269 } 270 #endif 271 272 /* 273 * If immutable is set and we are not clearing it, we're not allowed to change 274 * anything else in the inode. Don't error out if we're only trying to set 275 * immutable on an immutable file. 276 */ 277 static int ext4_ioctl_check_immutable(struct inode *inode, __u32 new_projid, 278 unsigned int flags) 279 { 280 struct ext4_inode_info *ei = EXT4_I(inode); 281 unsigned int oldflags = ei->i_flags; 282 283 if (!(oldflags & EXT4_IMMUTABLE_FL) || !(flags & EXT4_IMMUTABLE_FL)) 284 return 0; 285 286 if ((oldflags & ~EXT4_IMMUTABLE_FL) != (flags & ~EXT4_IMMUTABLE_FL)) 287 return -EPERM; 288 if (ext4_has_feature_project(inode->i_sb) && 289 __kprojid_val(ei->i_projid) != new_projid) 290 return -EPERM; 291 292 return 0; 293 } 294 295 static int ext4_ioctl_setflags(struct inode *inode, 296 unsigned int flags) 297 { 298 struct ext4_inode_info *ei = EXT4_I(inode); 299 handle_t *handle = NULL; 300 int err = -EPERM, migrate = 0; 301 struct ext4_iloc iloc; 302 unsigned int oldflags, mask, i; 303 unsigned int jflag; 304 struct super_block *sb = inode->i_sb; 305 306 /* Is it quota file? Do not allow user to mess with it */ 307 if (ext4_is_quota_file(inode)) 308 goto flags_out; 309 310 oldflags = ei->i_flags; 311 312 /* The JOURNAL_DATA flag is modifiable only by root */ 313 jflag = flags & EXT4_JOURNAL_DATA_FL; 314 315 err = vfs_ioc_setflags_prepare(inode, oldflags, flags); 316 if (err) 317 goto flags_out; 318 319 /* 320 * The JOURNAL_DATA flag can only be changed by 321 * the relevant capability. 322 */ 323 if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { 324 if (!capable(CAP_SYS_RESOURCE)) 325 goto flags_out; 326 } 327 if ((flags ^ oldflags) & EXT4_EXTENTS_FL) 328 migrate = 1; 329 330 if ((flags ^ oldflags) & EXT4_CASEFOLD_FL) { 331 if (!ext4_has_feature_casefold(sb)) { 332 err = -EOPNOTSUPP; 333 goto flags_out; 334 } 335 336 if (!S_ISDIR(inode->i_mode)) { 337 err = -ENOTDIR; 338 goto flags_out; 339 } 340 341 if (!ext4_empty_dir(inode)) { 342 err = -ENOTEMPTY; 343 goto flags_out; 344 } 345 } 346 347 /* 348 * Wait for all pending directio and then flush all the dirty pages 349 * for this file. The flush marks all the pages readonly, so any 350 * subsequent attempt to write to the file (particularly mmap pages) 351 * will come through the filesystem and fail. 352 */ 353 if (S_ISREG(inode->i_mode) && !IS_IMMUTABLE(inode) && 354 (flags & EXT4_IMMUTABLE_FL)) { 355 inode_dio_wait(inode); 356 err = filemap_write_and_wait(inode->i_mapping); 357 if (err) 358 goto flags_out; 359 } 360 361 handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 362 if (IS_ERR(handle)) { 363 err = PTR_ERR(handle); 364 goto flags_out; 365 } 366 if (IS_SYNC(inode)) 367 ext4_handle_sync(handle); 368 err = ext4_reserve_inode_write(handle, inode, &iloc); 369 if (err) 370 goto flags_err; 371 372 for (i = 0, mask = 1; i < 32; i++, mask <<= 1) { 373 if (!(mask & EXT4_FL_USER_MODIFIABLE)) 374 continue; 375 /* These flags get special treatment later */ 376 if (mask == EXT4_JOURNAL_DATA_FL || mask == EXT4_EXTENTS_FL) 377 continue; 378 if (mask & flags) 379 ext4_set_inode_flag(inode, i); 380 else 381 ext4_clear_inode_flag(inode, i); 382 } 383 384 ext4_set_inode_flags(inode); 385 inode->i_ctime = current_time(inode); 386 387 err = ext4_mark_iloc_dirty(handle, inode, &iloc); 388 flags_err: 389 ext4_journal_stop(handle); 390 if (err) 391 goto flags_out; 392 393 if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { 394 /* 395 * Changes to the journaling mode can cause unsafe changes to 396 * S_DAX if we are using the DAX mount option. 397 */ 398 if (test_opt(inode->i_sb, DAX)) { 399 err = -EBUSY; 400 goto flags_out; 401 } 402 403 err = ext4_change_inode_journal_flag(inode, jflag); 404 if (err) 405 goto flags_out; 406 } 407 if (migrate) { 408 if (flags & EXT4_EXTENTS_FL) 409 err = ext4_ext_migrate(inode); 410 else 411 err = ext4_ind_migrate(inode); 412 } 413 414 flags_out: 415 return err; 416 } 417 418 #ifdef CONFIG_QUOTA 419 static int ext4_ioctl_setproject(struct file *filp, __u32 projid) 420 { 421 struct inode *inode = file_inode(filp); 422 struct super_block *sb = inode->i_sb; 423 struct ext4_inode_info *ei = EXT4_I(inode); 424 int err, rc; 425 handle_t *handle; 426 kprojid_t kprojid; 427 struct ext4_iloc iloc; 428 struct ext4_inode *raw_inode; 429 struct dquot *transfer_to[MAXQUOTAS] = { }; 430 431 if (!ext4_has_feature_project(sb)) { 432 if (projid != EXT4_DEF_PROJID) 433 return -EOPNOTSUPP; 434 else 435 return 0; 436 } 437 438 if (EXT4_INODE_SIZE(sb) <= EXT4_GOOD_OLD_INODE_SIZE) 439 return -EOPNOTSUPP; 440 441 kprojid = make_kprojid(&init_user_ns, (projid_t)projid); 442 443 if (projid_eq(kprojid, EXT4_I(inode)->i_projid)) 444 return 0; 445 446 err = -EPERM; 447 /* Is it quota file? Do not allow user to mess with it */ 448 if (ext4_is_quota_file(inode)) 449 return err; 450 451 err = ext4_get_inode_loc(inode, &iloc); 452 if (err) 453 return err; 454 455 raw_inode = ext4_raw_inode(&iloc); 456 if (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) { 457 err = ext4_expand_extra_isize(inode, 458 EXT4_SB(sb)->s_want_extra_isize, 459 &iloc); 460 if (err) 461 return err; 462 } else { 463 brelse(iloc.bh); 464 } 465 466 err = dquot_initialize(inode); 467 if (err) 468 return err; 469 470 handle = ext4_journal_start(inode, EXT4_HT_QUOTA, 471 EXT4_QUOTA_INIT_BLOCKS(sb) + 472 EXT4_QUOTA_DEL_BLOCKS(sb) + 3); 473 if (IS_ERR(handle)) 474 return PTR_ERR(handle); 475 476 err = ext4_reserve_inode_write(handle, inode, &iloc); 477 if (err) 478 goto out_stop; 479 480 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); 481 if (!IS_ERR(transfer_to[PRJQUOTA])) { 482 483 /* __dquot_transfer() calls back ext4_get_inode_usage() which 484 * counts xattr inode references. 485 */ 486 down_read(&EXT4_I(inode)->xattr_sem); 487 err = __dquot_transfer(inode, transfer_to); 488 up_read(&EXT4_I(inode)->xattr_sem); 489 dqput(transfer_to[PRJQUOTA]); 490 if (err) 491 goto out_dirty; 492 } 493 494 EXT4_I(inode)->i_projid = kprojid; 495 inode->i_ctime = current_time(inode); 496 out_dirty: 497 rc = ext4_mark_iloc_dirty(handle, inode, &iloc); 498 if (!err) 499 err = rc; 500 out_stop: 501 ext4_journal_stop(handle); 502 return err; 503 } 504 #else 505 static int ext4_ioctl_setproject(struct file *filp, __u32 projid) 506 { 507 if (projid != EXT4_DEF_PROJID) 508 return -EOPNOTSUPP; 509 return 0; 510 } 511 #endif 512 513 /* Transfer internal flags to xflags */ 514 static inline __u32 ext4_iflags_to_xflags(unsigned long iflags) 515 { 516 __u32 xflags = 0; 517 518 if (iflags & EXT4_SYNC_FL) 519 xflags |= FS_XFLAG_SYNC; 520 if (iflags & EXT4_IMMUTABLE_FL) 521 xflags |= FS_XFLAG_IMMUTABLE; 522 if (iflags & EXT4_APPEND_FL) 523 xflags |= FS_XFLAG_APPEND; 524 if (iflags & EXT4_NODUMP_FL) 525 xflags |= FS_XFLAG_NODUMP; 526 if (iflags & EXT4_NOATIME_FL) 527 xflags |= FS_XFLAG_NOATIME; 528 if (iflags & EXT4_PROJINHERIT_FL) 529 xflags |= FS_XFLAG_PROJINHERIT; 530 return xflags; 531 } 532 533 #define EXT4_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \ 534 FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \ 535 FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT) 536 537 /* Transfer xflags flags to internal */ 538 static inline unsigned long ext4_xflags_to_iflags(__u32 xflags) 539 { 540 unsigned long iflags = 0; 541 542 if (xflags & FS_XFLAG_SYNC) 543 iflags |= EXT4_SYNC_FL; 544 if (xflags & FS_XFLAG_IMMUTABLE) 545 iflags |= EXT4_IMMUTABLE_FL; 546 if (xflags & FS_XFLAG_APPEND) 547 iflags |= EXT4_APPEND_FL; 548 if (xflags & FS_XFLAG_NODUMP) 549 iflags |= EXT4_NODUMP_FL; 550 if (xflags & FS_XFLAG_NOATIME) 551 iflags |= EXT4_NOATIME_FL; 552 if (xflags & FS_XFLAG_PROJINHERIT) 553 iflags |= EXT4_PROJINHERIT_FL; 554 555 return iflags; 556 } 557 558 static int ext4_shutdown(struct super_block *sb, unsigned long arg) 559 { 560 struct ext4_sb_info *sbi = EXT4_SB(sb); 561 __u32 flags; 562 563 if (!capable(CAP_SYS_ADMIN)) 564 return -EPERM; 565 566 if (get_user(flags, (__u32 __user *)arg)) 567 return -EFAULT; 568 569 if (flags > EXT4_GOING_FLAGS_NOLOGFLUSH) 570 return -EINVAL; 571 572 if (ext4_forced_shutdown(sbi)) 573 return 0; 574 575 ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags); 576 trace_ext4_shutdown(sb, flags); 577 578 switch (flags) { 579 case EXT4_GOING_FLAGS_DEFAULT: 580 freeze_bdev(sb->s_bdev); 581 set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 582 thaw_bdev(sb->s_bdev, sb); 583 break; 584 case EXT4_GOING_FLAGS_LOGFLUSH: 585 set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 586 if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { 587 (void) ext4_force_commit(sb); 588 jbd2_journal_abort(sbi->s_journal, -ESHUTDOWN); 589 } 590 break; 591 case EXT4_GOING_FLAGS_NOLOGFLUSH: 592 set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 593 if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) 594 jbd2_journal_abort(sbi->s_journal, -ESHUTDOWN); 595 break; 596 default: 597 return -EINVAL; 598 } 599 clear_opt(sb, DISCARD); 600 return 0; 601 } 602 603 struct getfsmap_info { 604 struct super_block *gi_sb; 605 struct fsmap_head __user *gi_data; 606 unsigned int gi_idx; 607 __u32 gi_last_flags; 608 }; 609 610 static int ext4_getfsmap_format(struct ext4_fsmap *xfm, void *priv) 611 { 612 struct getfsmap_info *info = priv; 613 struct fsmap fm; 614 615 trace_ext4_getfsmap_mapping(info->gi_sb, xfm); 616 617 info->gi_last_flags = xfm->fmr_flags; 618 ext4_fsmap_from_internal(info->gi_sb, &fm, xfm); 619 if (copy_to_user(&info->gi_data->fmh_recs[info->gi_idx++], &fm, 620 sizeof(struct fsmap))) 621 return -EFAULT; 622 623 return 0; 624 } 625 626 static int ext4_ioc_getfsmap(struct super_block *sb, 627 struct fsmap_head __user *arg) 628 { 629 struct getfsmap_info info = { NULL }; 630 struct ext4_fsmap_head xhead = {0}; 631 struct fsmap_head head; 632 bool aborted = false; 633 int error; 634 635 if (copy_from_user(&head, arg, sizeof(struct fsmap_head))) 636 return -EFAULT; 637 if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) || 638 memchr_inv(head.fmh_keys[0].fmr_reserved, 0, 639 sizeof(head.fmh_keys[0].fmr_reserved)) || 640 memchr_inv(head.fmh_keys[1].fmr_reserved, 0, 641 sizeof(head.fmh_keys[1].fmr_reserved))) 642 return -EINVAL; 643 /* 644 * ext4 doesn't report file extents at all, so the only valid 645 * file offsets are the magic ones (all zeroes or all ones). 646 */ 647 if (head.fmh_keys[0].fmr_offset || 648 (head.fmh_keys[1].fmr_offset != 0 && 649 head.fmh_keys[1].fmr_offset != -1ULL)) 650 return -EINVAL; 651 652 xhead.fmh_iflags = head.fmh_iflags; 653 xhead.fmh_count = head.fmh_count; 654 ext4_fsmap_to_internal(sb, &xhead.fmh_keys[0], &head.fmh_keys[0]); 655 ext4_fsmap_to_internal(sb, &xhead.fmh_keys[1], &head.fmh_keys[1]); 656 657 trace_ext4_getfsmap_low_key(sb, &xhead.fmh_keys[0]); 658 trace_ext4_getfsmap_high_key(sb, &xhead.fmh_keys[1]); 659 660 info.gi_sb = sb; 661 info.gi_data = arg; 662 error = ext4_getfsmap(sb, &xhead, ext4_getfsmap_format, &info); 663 if (error == EXT4_QUERY_RANGE_ABORT) { 664 error = 0; 665 aborted = true; 666 } else if (error) 667 return error; 668 669 /* If we didn't abort, set the "last" flag in the last fmx */ 670 if (!aborted && info.gi_idx) { 671 info.gi_last_flags |= FMR_OF_LAST; 672 if (copy_to_user(&info.gi_data->fmh_recs[info.gi_idx - 1].fmr_flags, 673 &info.gi_last_flags, 674 sizeof(info.gi_last_flags))) 675 return -EFAULT; 676 } 677 678 /* copy back header */ 679 head.fmh_entries = xhead.fmh_entries; 680 head.fmh_oflags = xhead.fmh_oflags; 681 if (copy_to_user(arg, &head, sizeof(struct fsmap_head))) 682 return -EFAULT; 683 684 return 0; 685 } 686 687 static long ext4_ioctl_group_add(struct file *file, 688 struct ext4_new_group_data *input) 689 { 690 struct super_block *sb = file_inode(file)->i_sb; 691 int err, err2=0; 692 693 err = ext4_resize_begin(sb); 694 if (err) 695 return err; 696 697 if (ext4_has_feature_bigalloc(sb)) { 698 ext4_msg(sb, KERN_ERR, 699 "Online resizing not supported with bigalloc"); 700 err = -EOPNOTSUPP; 701 goto group_add_out; 702 } 703 704 err = mnt_want_write_file(file); 705 if (err) 706 goto group_add_out; 707 708 err = ext4_group_add(sb, input); 709 if (EXT4_SB(sb)->s_journal) { 710 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 711 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 712 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 713 } 714 if (err == 0) 715 err = err2; 716 mnt_drop_write_file(file); 717 if (!err && ext4_has_group_desc_csum(sb) && 718 test_opt(sb, INIT_INODE_TABLE)) 719 err = ext4_register_li_request(sb, input->group); 720 group_add_out: 721 ext4_resize_end(sb); 722 return err; 723 } 724 725 static void ext4_fill_fsxattr(struct inode *inode, struct fsxattr *fa) 726 { 727 struct ext4_inode_info *ei = EXT4_I(inode); 728 729 simple_fill_fsxattr(fa, ext4_iflags_to_xflags(ei->i_flags & 730 EXT4_FL_USER_VISIBLE)); 731 732 if (ext4_has_feature_project(inode->i_sb)) 733 fa->fsx_projid = from_kprojid(&init_user_ns, ei->i_projid); 734 } 735 736 /* So that the fiemap access checks can't overflow on 32 bit machines. */ 737 #define FIEMAP_MAX_EXTENTS (UINT_MAX / sizeof(struct fiemap_extent)) 738 739 static int ext4_ioctl_get_es_cache(struct file *filp, unsigned long arg) 740 { 741 struct fiemap fiemap; 742 struct fiemap __user *ufiemap = (struct fiemap __user *) arg; 743 struct fiemap_extent_info fieinfo = { 0, }; 744 struct inode *inode = file_inode(filp); 745 int error; 746 747 if (copy_from_user(&fiemap, ufiemap, sizeof(fiemap))) 748 return -EFAULT; 749 750 if (fiemap.fm_extent_count > FIEMAP_MAX_EXTENTS) 751 return -EINVAL; 752 753 fieinfo.fi_flags = fiemap.fm_flags; 754 fieinfo.fi_extents_max = fiemap.fm_extent_count; 755 fieinfo.fi_extents_start = ufiemap->fm_extents; 756 757 error = ext4_get_es_cache(inode, &fieinfo, fiemap.fm_start, 758 fiemap.fm_length); 759 fiemap.fm_flags = fieinfo.fi_flags; 760 fiemap.fm_mapped_extents = fieinfo.fi_extents_mapped; 761 if (copy_to_user(ufiemap, &fiemap, sizeof(fiemap))) 762 error = -EFAULT; 763 764 return error; 765 } 766 767 long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 768 { 769 struct inode *inode = file_inode(filp); 770 struct super_block *sb = inode->i_sb; 771 struct ext4_inode_info *ei = EXT4_I(inode); 772 unsigned int flags; 773 774 ext4_debug("cmd = %u, arg = %lu\n", cmd, arg); 775 776 switch (cmd) { 777 case FS_IOC_GETFSMAP: 778 return ext4_ioc_getfsmap(sb, (void __user *)arg); 779 case EXT4_IOC_GETFLAGS: 780 flags = ei->i_flags & EXT4_FL_USER_VISIBLE; 781 if (S_ISREG(inode->i_mode)) 782 flags &= ~EXT4_PROJINHERIT_FL; 783 return put_user(flags, (int __user *) arg); 784 case EXT4_IOC_SETFLAGS: { 785 int err; 786 787 if (!inode_owner_or_capable(inode)) 788 return -EACCES; 789 790 if (get_user(flags, (int __user *) arg)) 791 return -EFAULT; 792 793 if (flags & ~EXT4_FL_USER_VISIBLE) 794 return -EOPNOTSUPP; 795 /* 796 * chattr(1) grabs flags via GETFLAGS, modifies the result and 797 * passes that to SETFLAGS. So we cannot easily make SETFLAGS 798 * more restrictive than just silently masking off visible but 799 * not settable flags as we always did. 800 */ 801 flags &= EXT4_FL_USER_MODIFIABLE; 802 if (ext4_mask_flags(inode->i_mode, flags) != flags) 803 return -EOPNOTSUPP; 804 805 err = mnt_want_write_file(filp); 806 if (err) 807 return err; 808 809 inode_lock(inode); 810 err = ext4_ioctl_check_immutable(inode, 811 from_kprojid(&init_user_ns, ei->i_projid), 812 flags); 813 if (!err) 814 err = ext4_ioctl_setflags(inode, flags); 815 inode_unlock(inode); 816 mnt_drop_write_file(filp); 817 return err; 818 } 819 case EXT4_IOC_GETVERSION: 820 case EXT4_IOC_GETVERSION_OLD: 821 return put_user(inode->i_generation, (int __user *) arg); 822 case EXT4_IOC_SETVERSION: 823 case EXT4_IOC_SETVERSION_OLD: { 824 handle_t *handle; 825 struct ext4_iloc iloc; 826 __u32 generation; 827 int err; 828 829 if (!inode_owner_or_capable(inode)) 830 return -EPERM; 831 832 if (ext4_has_metadata_csum(inode->i_sb)) { 833 ext4_warning(sb, "Setting inode version is not " 834 "supported with metadata_csum enabled."); 835 return -ENOTTY; 836 } 837 838 err = mnt_want_write_file(filp); 839 if (err) 840 return err; 841 if (get_user(generation, (int __user *) arg)) { 842 err = -EFAULT; 843 goto setversion_out; 844 } 845 846 inode_lock(inode); 847 handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 848 if (IS_ERR(handle)) { 849 err = PTR_ERR(handle); 850 goto unlock_out; 851 } 852 err = ext4_reserve_inode_write(handle, inode, &iloc); 853 if (err == 0) { 854 inode->i_ctime = current_time(inode); 855 inode->i_generation = generation; 856 err = ext4_mark_iloc_dirty(handle, inode, &iloc); 857 } 858 ext4_journal_stop(handle); 859 860 unlock_out: 861 inode_unlock(inode); 862 setversion_out: 863 mnt_drop_write_file(filp); 864 return err; 865 } 866 case EXT4_IOC_GROUP_EXTEND: { 867 ext4_fsblk_t n_blocks_count; 868 int err, err2=0; 869 870 err = ext4_resize_begin(sb); 871 if (err) 872 return err; 873 874 if (get_user(n_blocks_count, (__u32 __user *)arg)) { 875 err = -EFAULT; 876 goto group_extend_out; 877 } 878 879 if (ext4_has_feature_bigalloc(sb)) { 880 ext4_msg(sb, KERN_ERR, 881 "Online resizing not supported with bigalloc"); 882 err = -EOPNOTSUPP; 883 goto group_extend_out; 884 } 885 886 err = mnt_want_write_file(filp); 887 if (err) 888 goto group_extend_out; 889 890 err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count); 891 if (EXT4_SB(sb)->s_journal) { 892 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 893 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 894 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 895 } 896 if (err == 0) 897 err = err2; 898 mnt_drop_write_file(filp); 899 group_extend_out: 900 ext4_resize_end(sb); 901 return err; 902 } 903 904 case EXT4_IOC_MOVE_EXT: { 905 struct move_extent me; 906 struct fd donor; 907 int err; 908 909 if (!(filp->f_mode & FMODE_READ) || 910 !(filp->f_mode & FMODE_WRITE)) 911 return -EBADF; 912 913 if (copy_from_user(&me, 914 (struct move_extent __user *)arg, sizeof(me))) 915 return -EFAULT; 916 me.moved_len = 0; 917 918 donor = fdget(me.donor_fd); 919 if (!donor.file) 920 return -EBADF; 921 922 if (!(donor.file->f_mode & FMODE_WRITE)) { 923 err = -EBADF; 924 goto mext_out; 925 } 926 927 if (ext4_has_feature_bigalloc(sb)) { 928 ext4_msg(sb, KERN_ERR, 929 "Online defrag not supported with bigalloc"); 930 err = -EOPNOTSUPP; 931 goto mext_out; 932 } else if (IS_DAX(inode)) { 933 ext4_msg(sb, KERN_ERR, 934 "Online defrag not supported with DAX"); 935 err = -EOPNOTSUPP; 936 goto mext_out; 937 } 938 939 err = mnt_want_write_file(filp); 940 if (err) 941 goto mext_out; 942 943 err = ext4_move_extents(filp, donor.file, me.orig_start, 944 me.donor_start, me.len, &me.moved_len); 945 mnt_drop_write_file(filp); 946 947 if (copy_to_user((struct move_extent __user *)arg, 948 &me, sizeof(me))) 949 err = -EFAULT; 950 mext_out: 951 fdput(donor); 952 return err; 953 } 954 955 case EXT4_IOC_GROUP_ADD: { 956 struct ext4_new_group_data input; 957 958 if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg, 959 sizeof(input))) 960 return -EFAULT; 961 962 return ext4_ioctl_group_add(filp, &input); 963 } 964 965 case EXT4_IOC_MIGRATE: 966 { 967 int err; 968 if (!inode_owner_or_capable(inode)) 969 return -EACCES; 970 971 err = mnt_want_write_file(filp); 972 if (err) 973 return err; 974 /* 975 * inode_mutex prevent write and truncate on the file. 976 * Read still goes through. We take i_data_sem in 977 * ext4_ext_swap_inode_data before we switch the 978 * inode format to prevent read. 979 */ 980 inode_lock((inode)); 981 err = ext4_ext_migrate(inode); 982 inode_unlock((inode)); 983 mnt_drop_write_file(filp); 984 return err; 985 } 986 987 case EXT4_IOC_ALLOC_DA_BLKS: 988 { 989 int err; 990 if (!inode_owner_or_capable(inode)) 991 return -EACCES; 992 993 err = mnt_want_write_file(filp); 994 if (err) 995 return err; 996 err = ext4_alloc_da_blocks(inode); 997 mnt_drop_write_file(filp); 998 return err; 999 } 1000 1001 case EXT4_IOC_SWAP_BOOT: 1002 { 1003 int err; 1004 if (!(filp->f_mode & FMODE_WRITE)) 1005 return -EBADF; 1006 err = mnt_want_write_file(filp); 1007 if (err) 1008 return err; 1009 err = swap_inode_boot_loader(sb, inode); 1010 mnt_drop_write_file(filp); 1011 return err; 1012 } 1013 1014 case EXT4_IOC_RESIZE_FS: { 1015 ext4_fsblk_t n_blocks_count; 1016 int err = 0, err2 = 0; 1017 ext4_group_t o_group = EXT4_SB(sb)->s_groups_count; 1018 1019 if (copy_from_user(&n_blocks_count, (__u64 __user *)arg, 1020 sizeof(__u64))) { 1021 return -EFAULT; 1022 } 1023 1024 err = ext4_resize_begin(sb); 1025 if (err) 1026 return err; 1027 1028 err = mnt_want_write_file(filp); 1029 if (err) 1030 goto resizefs_out; 1031 1032 err = ext4_resize_fs(sb, n_blocks_count); 1033 if (EXT4_SB(sb)->s_journal) { 1034 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 1035 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 1036 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 1037 } 1038 if (err == 0) 1039 err = err2; 1040 mnt_drop_write_file(filp); 1041 if (!err && (o_group < EXT4_SB(sb)->s_groups_count) && 1042 ext4_has_group_desc_csum(sb) && 1043 test_opt(sb, INIT_INODE_TABLE)) 1044 err = ext4_register_li_request(sb, o_group); 1045 1046 resizefs_out: 1047 ext4_resize_end(sb); 1048 return err; 1049 } 1050 1051 case FITRIM: 1052 { 1053 struct request_queue *q = bdev_get_queue(sb->s_bdev); 1054 struct fstrim_range range; 1055 int ret = 0; 1056 1057 if (!capable(CAP_SYS_ADMIN)) 1058 return -EPERM; 1059 1060 if (!blk_queue_discard(q)) 1061 return -EOPNOTSUPP; 1062 1063 /* 1064 * We haven't replayed the journal, so we cannot use our 1065 * block-bitmap-guided storage zapping commands. 1066 */ 1067 if (test_opt(sb, NOLOAD) && ext4_has_feature_journal(sb)) 1068 return -EROFS; 1069 1070 if (copy_from_user(&range, (struct fstrim_range __user *)arg, 1071 sizeof(range))) 1072 return -EFAULT; 1073 1074 range.minlen = max((unsigned int)range.minlen, 1075 q->limits.discard_granularity); 1076 ret = ext4_trim_fs(sb, &range); 1077 if (ret < 0) 1078 return ret; 1079 1080 if (copy_to_user((struct fstrim_range __user *)arg, &range, 1081 sizeof(range))) 1082 return -EFAULT; 1083 1084 return 0; 1085 } 1086 case EXT4_IOC_PRECACHE_EXTENTS: 1087 return ext4_ext_precache(inode); 1088 1089 case EXT4_IOC_SET_ENCRYPTION_POLICY: 1090 if (!ext4_has_feature_encrypt(sb)) 1091 return -EOPNOTSUPP; 1092 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); 1093 1094 case EXT4_IOC_GET_ENCRYPTION_PWSALT: { 1095 #ifdef CONFIG_FS_ENCRYPTION 1096 int err, err2; 1097 struct ext4_sb_info *sbi = EXT4_SB(sb); 1098 handle_t *handle; 1099 1100 if (!ext4_has_feature_encrypt(sb)) 1101 return -EOPNOTSUPP; 1102 if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) { 1103 err = mnt_want_write_file(filp); 1104 if (err) 1105 return err; 1106 handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1); 1107 if (IS_ERR(handle)) { 1108 err = PTR_ERR(handle); 1109 goto pwsalt_err_exit; 1110 } 1111 err = ext4_journal_get_write_access(handle, sbi->s_sbh); 1112 if (err) 1113 goto pwsalt_err_journal; 1114 generate_random_uuid(sbi->s_es->s_encrypt_pw_salt); 1115 err = ext4_handle_dirty_metadata(handle, NULL, 1116 sbi->s_sbh); 1117 pwsalt_err_journal: 1118 err2 = ext4_journal_stop(handle); 1119 if (err2 && !err) 1120 err = err2; 1121 pwsalt_err_exit: 1122 mnt_drop_write_file(filp); 1123 if (err) 1124 return err; 1125 } 1126 if (copy_to_user((void __user *) arg, 1127 sbi->s_es->s_encrypt_pw_salt, 16)) 1128 return -EFAULT; 1129 return 0; 1130 #else 1131 return -EOPNOTSUPP; 1132 #endif 1133 } 1134 case EXT4_IOC_GET_ENCRYPTION_POLICY: 1135 if (!ext4_has_feature_encrypt(sb)) 1136 return -EOPNOTSUPP; 1137 return fscrypt_ioctl_get_policy(filp, (void __user *)arg); 1138 1139 case FS_IOC_GET_ENCRYPTION_POLICY_EX: 1140 if (!ext4_has_feature_encrypt(sb)) 1141 return -EOPNOTSUPP; 1142 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg); 1143 1144 case FS_IOC_ADD_ENCRYPTION_KEY: 1145 if (!ext4_has_feature_encrypt(sb)) 1146 return -EOPNOTSUPP; 1147 return fscrypt_ioctl_add_key(filp, (void __user *)arg); 1148 1149 case FS_IOC_REMOVE_ENCRYPTION_KEY: 1150 if (!ext4_has_feature_encrypt(sb)) 1151 return -EOPNOTSUPP; 1152 return fscrypt_ioctl_remove_key(filp, (void __user *)arg); 1153 1154 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: 1155 if (!ext4_has_feature_encrypt(sb)) 1156 return -EOPNOTSUPP; 1157 return fscrypt_ioctl_remove_key_all_users(filp, 1158 (void __user *)arg); 1159 case FS_IOC_GET_ENCRYPTION_KEY_STATUS: 1160 if (!ext4_has_feature_encrypt(sb)) 1161 return -EOPNOTSUPP; 1162 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg); 1163 1164 case FS_IOC_GET_ENCRYPTION_NONCE: 1165 if (!ext4_has_feature_encrypt(sb)) 1166 return -EOPNOTSUPP; 1167 return fscrypt_ioctl_get_nonce(filp, (void __user *)arg); 1168 1169 case EXT4_IOC_CLEAR_ES_CACHE: 1170 { 1171 if (!inode_owner_or_capable(inode)) 1172 return -EACCES; 1173 ext4_clear_inode_es(inode); 1174 return 0; 1175 } 1176 1177 case EXT4_IOC_GETSTATE: 1178 { 1179 __u32 state = 0; 1180 1181 if (ext4_test_inode_state(inode, EXT4_STATE_EXT_PRECACHED)) 1182 state |= EXT4_STATE_FLAG_EXT_PRECACHED; 1183 if (ext4_test_inode_state(inode, EXT4_STATE_NEW)) 1184 state |= EXT4_STATE_FLAG_NEW; 1185 if (ext4_test_inode_state(inode, EXT4_STATE_NEWENTRY)) 1186 state |= EXT4_STATE_FLAG_NEWENTRY; 1187 if (ext4_test_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE)) 1188 state |= EXT4_STATE_FLAG_DA_ALLOC_CLOSE; 1189 1190 return put_user(state, (__u32 __user *) arg); 1191 } 1192 1193 case EXT4_IOC_GET_ES_CACHE: 1194 return ext4_ioctl_get_es_cache(filp, arg); 1195 1196 case EXT4_IOC_FSGETXATTR: 1197 { 1198 struct fsxattr fa; 1199 1200 ext4_fill_fsxattr(inode, &fa); 1201 1202 if (copy_to_user((struct fsxattr __user *)arg, 1203 &fa, sizeof(fa))) 1204 return -EFAULT; 1205 return 0; 1206 } 1207 case EXT4_IOC_FSSETXATTR: 1208 { 1209 struct fsxattr fa, old_fa; 1210 int err; 1211 1212 if (copy_from_user(&fa, (struct fsxattr __user *)arg, 1213 sizeof(fa))) 1214 return -EFAULT; 1215 1216 /* Make sure caller has proper permission */ 1217 if (!inode_owner_or_capable(inode)) 1218 return -EACCES; 1219 1220 if (fa.fsx_xflags & ~EXT4_SUPPORTED_FS_XFLAGS) 1221 return -EOPNOTSUPP; 1222 1223 flags = ext4_xflags_to_iflags(fa.fsx_xflags); 1224 if (ext4_mask_flags(inode->i_mode, flags) != flags) 1225 return -EOPNOTSUPP; 1226 1227 err = mnt_want_write_file(filp); 1228 if (err) 1229 return err; 1230 1231 inode_lock(inode); 1232 ext4_fill_fsxattr(inode, &old_fa); 1233 err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa); 1234 if (err) 1235 goto out; 1236 flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) | 1237 (flags & EXT4_FL_XFLAG_VISIBLE); 1238 err = ext4_ioctl_check_immutable(inode, fa.fsx_projid, flags); 1239 if (err) 1240 goto out; 1241 err = ext4_ioctl_setflags(inode, flags); 1242 if (err) 1243 goto out; 1244 err = ext4_ioctl_setproject(filp, fa.fsx_projid); 1245 out: 1246 inode_unlock(inode); 1247 mnt_drop_write_file(filp); 1248 return err; 1249 } 1250 case EXT4_IOC_SHUTDOWN: 1251 return ext4_shutdown(sb, arg); 1252 1253 case FS_IOC_ENABLE_VERITY: 1254 if (!ext4_has_feature_verity(sb)) 1255 return -EOPNOTSUPP; 1256 return fsverity_ioctl_enable(filp, (const void __user *)arg); 1257 1258 case FS_IOC_MEASURE_VERITY: 1259 if (!ext4_has_feature_verity(sb)) 1260 return -EOPNOTSUPP; 1261 return fsverity_ioctl_measure(filp, (void __user *)arg); 1262 1263 default: 1264 return -ENOTTY; 1265 } 1266 } 1267 1268 #ifdef CONFIG_COMPAT 1269 long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 1270 { 1271 /* These are just misnamed, they actually get/put from/to user an int */ 1272 switch (cmd) { 1273 case EXT4_IOC32_GETFLAGS: 1274 cmd = EXT4_IOC_GETFLAGS; 1275 break; 1276 case EXT4_IOC32_SETFLAGS: 1277 cmd = EXT4_IOC_SETFLAGS; 1278 break; 1279 case EXT4_IOC32_GETVERSION: 1280 cmd = EXT4_IOC_GETVERSION; 1281 break; 1282 case EXT4_IOC32_SETVERSION: 1283 cmd = EXT4_IOC_SETVERSION; 1284 break; 1285 case EXT4_IOC32_GROUP_EXTEND: 1286 cmd = EXT4_IOC_GROUP_EXTEND; 1287 break; 1288 case EXT4_IOC32_GETVERSION_OLD: 1289 cmd = EXT4_IOC_GETVERSION_OLD; 1290 break; 1291 case EXT4_IOC32_SETVERSION_OLD: 1292 cmd = EXT4_IOC_SETVERSION_OLD; 1293 break; 1294 case EXT4_IOC32_GETRSVSZ: 1295 cmd = EXT4_IOC_GETRSVSZ; 1296 break; 1297 case EXT4_IOC32_SETRSVSZ: 1298 cmd = EXT4_IOC_SETRSVSZ; 1299 break; 1300 case EXT4_IOC32_GROUP_ADD: { 1301 struct compat_ext4_new_group_input __user *uinput; 1302 struct ext4_new_group_data input; 1303 int err; 1304 1305 uinput = compat_ptr(arg); 1306 err = get_user(input.group, &uinput->group); 1307 err |= get_user(input.block_bitmap, &uinput->block_bitmap); 1308 err |= get_user(input.inode_bitmap, &uinput->inode_bitmap); 1309 err |= get_user(input.inode_table, &uinput->inode_table); 1310 err |= get_user(input.blocks_count, &uinput->blocks_count); 1311 err |= get_user(input.reserved_blocks, 1312 &uinput->reserved_blocks); 1313 if (err) 1314 return -EFAULT; 1315 return ext4_ioctl_group_add(file, &input); 1316 } 1317 case EXT4_IOC_MOVE_EXT: 1318 case EXT4_IOC_RESIZE_FS: 1319 case FITRIM: 1320 case EXT4_IOC_PRECACHE_EXTENTS: 1321 case EXT4_IOC_SET_ENCRYPTION_POLICY: 1322 case EXT4_IOC_GET_ENCRYPTION_PWSALT: 1323 case EXT4_IOC_GET_ENCRYPTION_POLICY: 1324 case FS_IOC_GET_ENCRYPTION_POLICY_EX: 1325 case FS_IOC_ADD_ENCRYPTION_KEY: 1326 case FS_IOC_REMOVE_ENCRYPTION_KEY: 1327 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: 1328 case FS_IOC_GET_ENCRYPTION_KEY_STATUS: 1329 case FS_IOC_GET_ENCRYPTION_NONCE: 1330 case EXT4_IOC_SHUTDOWN: 1331 case FS_IOC_GETFSMAP: 1332 case FS_IOC_ENABLE_VERITY: 1333 case FS_IOC_MEASURE_VERITY: 1334 case EXT4_IOC_CLEAR_ES_CACHE: 1335 case EXT4_IOC_GETSTATE: 1336 case EXT4_IOC_GET_ES_CACHE: 1337 case EXT4_IOC_FSGETXATTR: 1338 case EXT4_IOC_FSSETXATTR: 1339 break; 1340 default: 1341 return -ENOIOCTLCMD; 1342 } 1343 return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); 1344 } 1345 #endif 1346