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 <linux/fileattr.h> 24 #include "ext4_jbd2.h" 25 #include "ext4.h" 26 #include <linux/fsmap.h> 27 #include "fsmap.h" 28 #include <trace/events/ext4.h> 29 30 /** 31 * Swap memory between @a and @b for @len bytes. 32 * 33 * @a: pointer to first memory area 34 * @b: pointer to second memory area 35 * @len: number of bytes to swap 36 * 37 */ 38 static void memswap(void *a, void *b, size_t len) 39 { 40 unsigned char *ap, *bp; 41 42 ap = (unsigned char *)a; 43 bp = (unsigned char *)b; 44 while (len-- > 0) { 45 swap(*ap, *bp); 46 ap++; 47 bp++; 48 } 49 } 50 51 /** 52 * Swap i_data and associated attributes between @inode1 and @inode2. 53 * This function is used for the primary swap between inode1 and inode2 54 * and also to revert this primary swap in case of errors. 55 * 56 * Therefore you have to make sure, that calling this method twice 57 * will revert all changes. 58 * 59 * @inode1: pointer to first inode 60 * @inode2: pointer to second inode 61 */ 62 static void swap_inode_data(struct inode *inode1, struct inode *inode2) 63 { 64 loff_t isize; 65 struct ext4_inode_info *ei1; 66 struct ext4_inode_info *ei2; 67 unsigned long tmp; 68 69 ei1 = EXT4_I(inode1); 70 ei2 = EXT4_I(inode2); 71 72 swap(inode1->i_version, inode2->i_version); 73 swap(inode1->i_atime, inode2->i_atime); 74 swap(inode1->i_mtime, inode2->i_mtime); 75 76 memswap(ei1->i_data, ei2->i_data, sizeof(ei1->i_data)); 77 tmp = ei1->i_flags & EXT4_FL_SHOULD_SWAP; 78 ei1->i_flags = (ei2->i_flags & EXT4_FL_SHOULD_SWAP) | 79 (ei1->i_flags & ~EXT4_FL_SHOULD_SWAP); 80 ei2->i_flags = tmp | (ei2->i_flags & ~EXT4_FL_SHOULD_SWAP); 81 swap(ei1->i_disksize, ei2->i_disksize); 82 ext4_es_remove_extent(inode1, 0, EXT_MAX_BLOCKS); 83 ext4_es_remove_extent(inode2, 0, EXT_MAX_BLOCKS); 84 85 isize = i_size_read(inode1); 86 i_size_write(inode1, i_size_read(inode2)); 87 i_size_write(inode2, isize); 88 } 89 90 void ext4_reset_inode_seed(struct inode *inode) 91 { 92 struct ext4_inode_info *ei = EXT4_I(inode); 93 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); 94 __le32 inum = cpu_to_le32(inode->i_ino); 95 __le32 gen = cpu_to_le32(inode->i_generation); 96 __u32 csum; 97 98 if (!ext4_has_metadata_csum(inode->i_sb)) 99 return; 100 101 csum = ext4_chksum(sbi, sbi->s_csum_seed, (__u8 *)&inum, sizeof(inum)); 102 ei->i_csum_seed = ext4_chksum(sbi, csum, (__u8 *)&gen, sizeof(gen)); 103 } 104 105 /** 106 * Swap the information from the given @inode and the inode 107 * EXT4_BOOT_LOADER_INO. It will basically swap i_data and all other 108 * important fields of the inodes. 109 * 110 * @sb: the super block of the filesystem 111 * @mnt_userns: user namespace of the mount the inode was found from 112 * @inode: the inode to swap with EXT4_BOOT_LOADER_INO 113 * 114 */ 115 static long swap_inode_boot_loader(struct super_block *sb, 116 struct user_namespace *mnt_userns, 117 struct inode *inode) 118 { 119 handle_t *handle; 120 int err; 121 struct inode *inode_bl; 122 struct ext4_inode_info *ei_bl; 123 qsize_t size, size_bl, diff; 124 blkcnt_t blocks; 125 unsigned short bytes; 126 127 inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO, EXT4_IGET_SPECIAL); 128 if (IS_ERR(inode_bl)) 129 return PTR_ERR(inode_bl); 130 ei_bl = EXT4_I(inode_bl); 131 132 /* Protect orig inodes against a truncate and make sure, 133 * that only 1 swap_inode_boot_loader is running. */ 134 lock_two_nondirectories(inode, inode_bl); 135 136 if (inode->i_nlink != 1 || !S_ISREG(inode->i_mode) || 137 IS_SWAPFILE(inode) || IS_ENCRYPTED(inode) || 138 (EXT4_I(inode)->i_flags & EXT4_JOURNAL_DATA_FL) || 139 ext4_has_inline_data(inode)) { 140 err = -EINVAL; 141 goto journal_err_out; 142 } 143 144 if (IS_RDONLY(inode) || IS_APPEND(inode) || IS_IMMUTABLE(inode) || 145 !inode_owner_or_capable(mnt_userns, inode) || 146 !capable(CAP_SYS_ADMIN)) { 147 err = -EPERM; 148 goto journal_err_out; 149 } 150 151 down_write(&EXT4_I(inode)->i_mmap_sem); 152 err = filemap_write_and_wait(inode->i_mapping); 153 if (err) 154 goto err_out; 155 156 err = filemap_write_and_wait(inode_bl->i_mapping); 157 if (err) 158 goto err_out; 159 160 /* Wait for all existing dio workers */ 161 inode_dio_wait(inode); 162 inode_dio_wait(inode_bl); 163 164 truncate_inode_pages(&inode->i_data, 0); 165 truncate_inode_pages(&inode_bl->i_data, 0); 166 167 handle = ext4_journal_start(inode_bl, EXT4_HT_MOVE_EXTENTS, 2); 168 if (IS_ERR(handle)) { 169 err = -EINVAL; 170 goto err_out; 171 } 172 ext4_fc_start_ineligible(sb, EXT4_FC_REASON_SWAP_BOOT); 173 174 /* Protect extent tree against block allocations via delalloc */ 175 ext4_double_down_write_data_sem(inode, inode_bl); 176 177 if (inode_bl->i_nlink == 0) { 178 /* this inode has never been used as a BOOT_LOADER */ 179 set_nlink(inode_bl, 1); 180 i_uid_write(inode_bl, 0); 181 i_gid_write(inode_bl, 0); 182 inode_bl->i_flags = 0; 183 ei_bl->i_flags = 0; 184 inode_set_iversion(inode_bl, 1); 185 i_size_write(inode_bl, 0); 186 inode_bl->i_mode = S_IFREG; 187 if (ext4_has_feature_extents(sb)) { 188 ext4_set_inode_flag(inode_bl, EXT4_INODE_EXTENTS); 189 ext4_ext_tree_init(handle, inode_bl); 190 } else 191 memset(ei_bl->i_data, 0, sizeof(ei_bl->i_data)); 192 } 193 194 err = dquot_initialize(inode); 195 if (err) 196 goto err_out1; 197 198 size = (qsize_t)(inode->i_blocks) * (1 << 9) + inode->i_bytes; 199 size_bl = (qsize_t)(inode_bl->i_blocks) * (1 << 9) + inode_bl->i_bytes; 200 diff = size - size_bl; 201 swap_inode_data(inode, inode_bl); 202 203 inode->i_ctime = inode_bl->i_ctime = current_time(inode); 204 205 inode->i_generation = prandom_u32(); 206 inode_bl->i_generation = prandom_u32(); 207 ext4_reset_inode_seed(inode); 208 ext4_reset_inode_seed(inode_bl); 209 210 ext4_discard_preallocations(inode, 0); 211 212 err = ext4_mark_inode_dirty(handle, inode); 213 if (err < 0) { 214 /* No need to update quota information. */ 215 ext4_warning(inode->i_sb, 216 "couldn't mark inode #%lu dirty (err %d)", 217 inode->i_ino, err); 218 /* Revert all changes: */ 219 swap_inode_data(inode, inode_bl); 220 ext4_mark_inode_dirty(handle, inode); 221 goto err_out1; 222 } 223 224 blocks = inode_bl->i_blocks; 225 bytes = inode_bl->i_bytes; 226 inode_bl->i_blocks = inode->i_blocks; 227 inode_bl->i_bytes = inode->i_bytes; 228 err = ext4_mark_inode_dirty(handle, inode_bl); 229 if (err < 0) { 230 /* No need to update quota information. */ 231 ext4_warning(inode_bl->i_sb, 232 "couldn't mark inode #%lu dirty (err %d)", 233 inode_bl->i_ino, err); 234 goto revert; 235 } 236 237 /* Bootloader inode should not be counted into quota information. */ 238 if (diff > 0) 239 dquot_free_space(inode, diff); 240 else 241 err = dquot_alloc_space(inode, -1 * diff); 242 243 if (err < 0) { 244 revert: 245 /* Revert all changes: */ 246 inode_bl->i_blocks = blocks; 247 inode_bl->i_bytes = bytes; 248 swap_inode_data(inode, inode_bl); 249 ext4_mark_inode_dirty(handle, inode); 250 ext4_mark_inode_dirty(handle, inode_bl); 251 } 252 253 err_out1: 254 ext4_journal_stop(handle); 255 ext4_fc_stop_ineligible(sb); 256 ext4_double_up_write_data_sem(inode, inode_bl); 257 258 err_out: 259 up_write(&EXT4_I(inode)->i_mmap_sem); 260 journal_err_out: 261 unlock_two_nondirectories(inode, inode_bl); 262 iput(inode_bl); 263 return err; 264 } 265 266 #ifdef CONFIG_FS_ENCRYPTION 267 static int uuid_is_zero(__u8 u[16]) 268 { 269 int i; 270 271 for (i = 0; i < 16; i++) 272 if (u[i]) 273 return 0; 274 return 1; 275 } 276 #endif 277 278 /* 279 * If immutable is set and we are not clearing it, we're not allowed to change 280 * anything else in the inode. Don't error out if we're only trying to set 281 * immutable on an immutable file. 282 */ 283 static int ext4_ioctl_check_immutable(struct inode *inode, __u32 new_projid, 284 unsigned int flags) 285 { 286 struct ext4_inode_info *ei = EXT4_I(inode); 287 unsigned int oldflags = ei->i_flags; 288 289 if (!(oldflags & EXT4_IMMUTABLE_FL) || !(flags & EXT4_IMMUTABLE_FL)) 290 return 0; 291 292 if ((oldflags & ~EXT4_IMMUTABLE_FL) != (flags & ~EXT4_IMMUTABLE_FL)) 293 return -EPERM; 294 if (ext4_has_feature_project(inode->i_sb) && 295 __kprojid_val(ei->i_projid) != new_projid) 296 return -EPERM; 297 298 return 0; 299 } 300 301 static void ext4_dax_dontcache(struct inode *inode, unsigned int flags) 302 { 303 struct ext4_inode_info *ei = EXT4_I(inode); 304 305 if (S_ISDIR(inode->i_mode)) 306 return; 307 308 if (test_opt2(inode->i_sb, DAX_NEVER) || 309 test_opt(inode->i_sb, DAX_ALWAYS)) 310 return; 311 312 if ((ei->i_flags ^ flags) & EXT4_DAX_FL) 313 d_mark_dontcache(inode); 314 } 315 316 static bool dax_compatible(struct inode *inode, unsigned int oldflags, 317 unsigned int flags) 318 { 319 /* Allow the DAX flag to be changed on inline directories */ 320 if (S_ISDIR(inode->i_mode)) { 321 flags &= ~EXT4_INLINE_DATA_FL; 322 oldflags &= ~EXT4_INLINE_DATA_FL; 323 } 324 325 if (flags & EXT4_DAX_FL) { 326 if ((oldflags & EXT4_DAX_MUT_EXCL) || 327 ext4_test_inode_state(inode, 328 EXT4_STATE_VERITY_IN_PROGRESS)) { 329 return false; 330 } 331 } 332 333 if ((flags & EXT4_DAX_MUT_EXCL) && (oldflags & EXT4_DAX_FL)) 334 return false; 335 336 return true; 337 } 338 339 static int ext4_ioctl_setflags(struct inode *inode, 340 unsigned int flags) 341 { 342 struct ext4_inode_info *ei = EXT4_I(inode); 343 handle_t *handle = NULL; 344 int err = -EPERM, migrate = 0; 345 struct ext4_iloc iloc; 346 unsigned int oldflags, mask, i; 347 struct super_block *sb = inode->i_sb; 348 349 /* Is it quota file? Do not allow user to mess with it */ 350 if (ext4_is_quota_file(inode)) 351 goto flags_out; 352 353 oldflags = ei->i_flags; 354 /* 355 * The JOURNAL_DATA flag can only be changed by 356 * the relevant capability. 357 */ 358 if ((flags ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { 359 if (!capable(CAP_SYS_RESOURCE)) 360 goto flags_out; 361 } 362 363 if (!dax_compatible(inode, oldflags, flags)) { 364 err = -EOPNOTSUPP; 365 goto flags_out; 366 } 367 368 if ((flags ^ oldflags) & EXT4_EXTENTS_FL) 369 migrate = 1; 370 371 if ((flags ^ oldflags) & EXT4_CASEFOLD_FL) { 372 if (!ext4_has_feature_casefold(sb)) { 373 err = -EOPNOTSUPP; 374 goto flags_out; 375 } 376 377 if (!S_ISDIR(inode->i_mode)) { 378 err = -ENOTDIR; 379 goto flags_out; 380 } 381 382 if (!ext4_empty_dir(inode)) { 383 err = -ENOTEMPTY; 384 goto flags_out; 385 } 386 } 387 388 /* 389 * Wait for all pending directio and then flush all the dirty pages 390 * for this file. The flush marks all the pages readonly, so any 391 * subsequent attempt to write to the file (particularly mmap pages) 392 * will come through the filesystem and fail. 393 */ 394 if (S_ISREG(inode->i_mode) && !IS_IMMUTABLE(inode) && 395 (flags & EXT4_IMMUTABLE_FL)) { 396 inode_dio_wait(inode); 397 err = filemap_write_and_wait(inode->i_mapping); 398 if (err) 399 goto flags_out; 400 } 401 402 handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 403 if (IS_ERR(handle)) { 404 err = PTR_ERR(handle); 405 goto flags_out; 406 } 407 if (IS_SYNC(inode)) 408 ext4_handle_sync(handle); 409 err = ext4_reserve_inode_write(handle, inode, &iloc); 410 if (err) 411 goto flags_err; 412 413 ext4_dax_dontcache(inode, flags); 414 415 for (i = 0, mask = 1; i < 32; i++, mask <<= 1) { 416 if (!(mask & EXT4_FL_USER_MODIFIABLE)) 417 continue; 418 /* These flags get special treatment later */ 419 if (mask == EXT4_JOURNAL_DATA_FL || mask == EXT4_EXTENTS_FL) 420 continue; 421 if (mask & flags) 422 ext4_set_inode_flag(inode, i); 423 else 424 ext4_clear_inode_flag(inode, i); 425 } 426 427 ext4_set_inode_flags(inode, false); 428 429 inode->i_ctime = current_time(inode); 430 431 err = ext4_mark_iloc_dirty(handle, inode, &iloc); 432 flags_err: 433 ext4_journal_stop(handle); 434 if (err) 435 goto flags_out; 436 437 if ((flags ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { 438 /* 439 * Changes to the journaling mode can cause unsafe changes to 440 * S_DAX if the inode is DAX 441 */ 442 if (IS_DAX(inode)) { 443 err = -EBUSY; 444 goto flags_out; 445 } 446 447 err = ext4_change_inode_journal_flag(inode, 448 flags & EXT4_JOURNAL_DATA_FL); 449 if (err) 450 goto flags_out; 451 } 452 if (migrate) { 453 if (flags & EXT4_EXTENTS_FL) 454 err = ext4_ext_migrate(inode); 455 else 456 err = ext4_ind_migrate(inode); 457 } 458 459 flags_out: 460 return err; 461 } 462 463 #ifdef CONFIG_QUOTA 464 static int ext4_ioctl_setproject(struct inode *inode, __u32 projid) 465 { 466 struct super_block *sb = inode->i_sb; 467 struct ext4_inode_info *ei = EXT4_I(inode); 468 int err, rc; 469 handle_t *handle; 470 kprojid_t kprojid; 471 struct ext4_iloc iloc; 472 struct ext4_inode *raw_inode; 473 struct dquot *transfer_to[MAXQUOTAS] = { }; 474 475 if (!ext4_has_feature_project(sb)) { 476 if (projid != EXT4_DEF_PROJID) 477 return -EOPNOTSUPP; 478 else 479 return 0; 480 } 481 482 if (EXT4_INODE_SIZE(sb) <= EXT4_GOOD_OLD_INODE_SIZE) 483 return -EOPNOTSUPP; 484 485 kprojid = make_kprojid(&init_user_ns, (projid_t)projid); 486 487 if (projid_eq(kprojid, EXT4_I(inode)->i_projid)) 488 return 0; 489 490 err = -EPERM; 491 /* Is it quota file? Do not allow user to mess with it */ 492 if (ext4_is_quota_file(inode)) 493 return err; 494 495 err = ext4_get_inode_loc(inode, &iloc); 496 if (err) 497 return err; 498 499 raw_inode = ext4_raw_inode(&iloc); 500 if (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) { 501 err = ext4_expand_extra_isize(inode, 502 EXT4_SB(sb)->s_want_extra_isize, 503 &iloc); 504 if (err) 505 return err; 506 } else { 507 brelse(iloc.bh); 508 } 509 510 err = dquot_initialize(inode); 511 if (err) 512 return err; 513 514 handle = ext4_journal_start(inode, EXT4_HT_QUOTA, 515 EXT4_QUOTA_INIT_BLOCKS(sb) + 516 EXT4_QUOTA_DEL_BLOCKS(sb) + 3); 517 if (IS_ERR(handle)) 518 return PTR_ERR(handle); 519 520 err = ext4_reserve_inode_write(handle, inode, &iloc); 521 if (err) 522 goto out_stop; 523 524 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); 525 if (!IS_ERR(transfer_to[PRJQUOTA])) { 526 527 /* __dquot_transfer() calls back ext4_get_inode_usage() which 528 * counts xattr inode references. 529 */ 530 down_read(&EXT4_I(inode)->xattr_sem); 531 err = __dquot_transfer(inode, transfer_to); 532 up_read(&EXT4_I(inode)->xattr_sem); 533 dqput(transfer_to[PRJQUOTA]); 534 if (err) 535 goto out_dirty; 536 } 537 538 EXT4_I(inode)->i_projid = kprojid; 539 inode->i_ctime = current_time(inode); 540 out_dirty: 541 rc = ext4_mark_iloc_dirty(handle, inode, &iloc); 542 if (!err) 543 err = rc; 544 out_stop: 545 ext4_journal_stop(handle); 546 return err; 547 } 548 #else 549 static int ext4_ioctl_setproject(struct inode *inode, __u32 projid) 550 { 551 if (projid != EXT4_DEF_PROJID) 552 return -EOPNOTSUPP; 553 return 0; 554 } 555 #endif 556 557 static int ext4_shutdown(struct super_block *sb, unsigned long arg) 558 { 559 struct ext4_sb_info *sbi = EXT4_SB(sb); 560 __u32 flags; 561 562 if (!capable(CAP_SYS_ADMIN)) 563 return -EPERM; 564 565 if (get_user(flags, (__u32 __user *)arg)) 566 return -EFAULT; 567 568 if (flags > EXT4_GOING_FLAGS_NOLOGFLUSH) 569 return -EINVAL; 570 571 if (ext4_forced_shutdown(sbi)) 572 return 0; 573 574 ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags); 575 trace_ext4_shutdown(sb, flags); 576 577 switch (flags) { 578 case EXT4_GOING_FLAGS_DEFAULT: 579 freeze_bdev(sb->s_bdev); 580 set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 581 thaw_bdev(sb->s_bdev); 582 break; 583 case EXT4_GOING_FLAGS_LOGFLUSH: 584 set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 585 if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { 586 (void) ext4_force_commit(sb); 587 jbd2_journal_abort(sbi->s_journal, -ESHUTDOWN); 588 } 589 break; 590 case EXT4_GOING_FLAGS_NOLOGFLUSH: 591 set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 592 if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) 593 jbd2_journal_abort(sbi->s_journal, -ESHUTDOWN); 594 break; 595 default: 596 return -EINVAL; 597 } 598 clear_opt(sb, DISCARD); 599 return 0; 600 } 601 602 struct getfsmap_info { 603 struct super_block *gi_sb; 604 struct fsmap_head __user *gi_data; 605 unsigned int gi_idx; 606 __u32 gi_last_flags; 607 }; 608 609 static int ext4_getfsmap_format(struct ext4_fsmap *xfm, void *priv) 610 { 611 struct getfsmap_info *info = priv; 612 struct fsmap fm; 613 614 trace_ext4_getfsmap_mapping(info->gi_sb, xfm); 615 616 info->gi_last_flags = xfm->fmr_flags; 617 ext4_fsmap_from_internal(info->gi_sb, &fm, xfm); 618 if (copy_to_user(&info->gi_data->fmh_recs[info->gi_idx++], &fm, 619 sizeof(struct fsmap))) 620 return -EFAULT; 621 622 return 0; 623 } 624 625 static int ext4_ioc_getfsmap(struct super_block *sb, 626 struct fsmap_head __user *arg) 627 { 628 struct getfsmap_info info = { NULL }; 629 struct ext4_fsmap_head xhead = {0}; 630 struct fsmap_head head; 631 bool aborted = false; 632 int error; 633 634 if (copy_from_user(&head, arg, sizeof(struct fsmap_head))) 635 return -EFAULT; 636 if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) || 637 memchr_inv(head.fmh_keys[0].fmr_reserved, 0, 638 sizeof(head.fmh_keys[0].fmr_reserved)) || 639 memchr_inv(head.fmh_keys[1].fmr_reserved, 0, 640 sizeof(head.fmh_keys[1].fmr_reserved))) 641 return -EINVAL; 642 /* 643 * ext4 doesn't report file extents at all, so the only valid 644 * file offsets are the magic ones (all zeroes or all ones). 645 */ 646 if (head.fmh_keys[0].fmr_offset || 647 (head.fmh_keys[1].fmr_offset != 0 && 648 head.fmh_keys[1].fmr_offset != -1ULL)) 649 return -EINVAL; 650 651 xhead.fmh_iflags = head.fmh_iflags; 652 xhead.fmh_count = head.fmh_count; 653 ext4_fsmap_to_internal(sb, &xhead.fmh_keys[0], &head.fmh_keys[0]); 654 ext4_fsmap_to_internal(sb, &xhead.fmh_keys[1], &head.fmh_keys[1]); 655 656 trace_ext4_getfsmap_low_key(sb, &xhead.fmh_keys[0]); 657 trace_ext4_getfsmap_high_key(sb, &xhead.fmh_keys[1]); 658 659 info.gi_sb = sb; 660 info.gi_data = arg; 661 error = ext4_getfsmap(sb, &xhead, ext4_getfsmap_format, &info); 662 if (error == EXT4_QUERY_RANGE_ABORT) 663 aborted = true; 664 else if (error) 665 return error; 666 667 /* If we didn't abort, set the "last" flag in the last fmx */ 668 if (!aborted && info.gi_idx) { 669 info.gi_last_flags |= FMR_OF_LAST; 670 if (copy_to_user(&info.gi_data->fmh_recs[info.gi_idx - 1].fmr_flags, 671 &info.gi_last_flags, 672 sizeof(info.gi_last_flags))) 673 return -EFAULT; 674 } 675 676 /* copy back header */ 677 head.fmh_entries = xhead.fmh_entries; 678 head.fmh_oflags = xhead.fmh_oflags; 679 if (copy_to_user(arg, &head, sizeof(struct fsmap_head))) 680 return -EFAULT; 681 682 return 0; 683 } 684 685 static long ext4_ioctl_group_add(struct file *file, 686 struct ext4_new_group_data *input) 687 { 688 struct super_block *sb = file_inode(file)->i_sb; 689 int err, err2=0; 690 691 err = ext4_resize_begin(sb); 692 if (err) 693 return err; 694 695 err = mnt_want_write_file(file); 696 if (err) 697 goto group_add_out; 698 699 err = ext4_group_add(sb, input); 700 if (EXT4_SB(sb)->s_journal) { 701 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 702 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal, 0); 703 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 704 } 705 if (err == 0) 706 err = err2; 707 mnt_drop_write_file(file); 708 if (!err && ext4_has_group_desc_csum(sb) && 709 test_opt(sb, INIT_INODE_TABLE)) 710 err = ext4_register_li_request(sb, input->group); 711 group_add_out: 712 ext4_resize_end(sb); 713 return err; 714 } 715 716 int ext4_fileattr_get(struct dentry *dentry, struct fileattr *fa) 717 { 718 struct inode *inode = d_inode(dentry); 719 struct ext4_inode_info *ei = EXT4_I(inode); 720 u32 flags = ei->i_flags & EXT4_FL_USER_VISIBLE; 721 722 if (S_ISREG(inode->i_mode)) 723 flags &= ~FS_PROJINHERIT_FL; 724 725 fileattr_fill_flags(fa, flags); 726 if (ext4_has_feature_project(inode->i_sb)) 727 fa->fsx_projid = from_kprojid(&init_user_ns, ei->i_projid); 728 729 return 0; 730 } 731 732 int ext4_fileattr_set(struct user_namespace *mnt_userns, 733 struct dentry *dentry, struct fileattr *fa) 734 { 735 struct inode *inode = d_inode(dentry); 736 u32 flags = fa->flags; 737 int err = -EOPNOTSUPP; 738 739 ext4_fc_start_update(inode); 740 if (flags & ~EXT4_FL_USER_VISIBLE) 741 goto out; 742 743 /* 744 * chattr(1) grabs flags via GETFLAGS, modifies the result and 745 * passes that to SETFLAGS. So we cannot easily make SETFLAGS 746 * more restrictive than just silently masking off visible but 747 * not settable flags as we always did. 748 */ 749 flags &= EXT4_FL_USER_MODIFIABLE; 750 if (ext4_mask_flags(inode->i_mode, flags) != flags) 751 goto out; 752 err = ext4_ioctl_check_immutable(inode, fa->fsx_projid, flags); 753 if (err) 754 goto out; 755 err = ext4_ioctl_setflags(inode, flags); 756 if (err) 757 goto out; 758 err = ext4_ioctl_setproject(inode, fa->fsx_projid); 759 out: 760 ext4_fc_stop_update(inode); 761 return err; 762 } 763 764 /* So that the fiemap access checks can't overflow on 32 bit machines. */ 765 #define FIEMAP_MAX_EXTENTS (UINT_MAX / sizeof(struct fiemap_extent)) 766 767 static int ext4_ioctl_get_es_cache(struct file *filp, unsigned long arg) 768 { 769 struct fiemap fiemap; 770 struct fiemap __user *ufiemap = (struct fiemap __user *) arg; 771 struct fiemap_extent_info fieinfo = { 0, }; 772 struct inode *inode = file_inode(filp); 773 int error; 774 775 if (copy_from_user(&fiemap, ufiemap, sizeof(fiemap))) 776 return -EFAULT; 777 778 if (fiemap.fm_extent_count > FIEMAP_MAX_EXTENTS) 779 return -EINVAL; 780 781 fieinfo.fi_flags = fiemap.fm_flags; 782 fieinfo.fi_extents_max = fiemap.fm_extent_count; 783 fieinfo.fi_extents_start = ufiemap->fm_extents; 784 785 error = ext4_get_es_cache(inode, &fieinfo, fiemap.fm_start, 786 fiemap.fm_length); 787 fiemap.fm_flags = fieinfo.fi_flags; 788 fiemap.fm_mapped_extents = fieinfo.fi_extents_mapped; 789 if (copy_to_user(ufiemap, &fiemap, sizeof(fiemap))) 790 error = -EFAULT; 791 792 return error; 793 } 794 795 static int ext4_ioctl_checkpoint(struct file *filp, unsigned long arg) 796 { 797 int err = 0; 798 __u32 flags = 0; 799 unsigned int flush_flags = 0; 800 struct super_block *sb = file_inode(filp)->i_sb; 801 struct request_queue *q; 802 803 if (copy_from_user(&flags, (__u32 __user *)arg, 804 sizeof(__u32))) 805 return -EFAULT; 806 807 if (!capable(CAP_SYS_ADMIN)) 808 return -EPERM; 809 810 /* check for invalid bits set */ 811 if ((flags & ~EXT4_IOC_CHECKPOINT_FLAG_VALID) || 812 ((flags & JBD2_JOURNAL_FLUSH_DISCARD) && 813 (flags & JBD2_JOURNAL_FLUSH_ZEROOUT))) 814 return -EINVAL; 815 816 if (!EXT4_SB(sb)->s_journal) 817 return -ENODEV; 818 819 if (flags & ~JBD2_JOURNAL_FLUSH_VALID) 820 return -EINVAL; 821 822 q = bdev_get_queue(EXT4_SB(sb)->s_journal->j_dev); 823 if (!q) 824 return -ENXIO; 825 if ((flags & JBD2_JOURNAL_FLUSH_DISCARD) && !blk_queue_discard(q)) 826 return -EOPNOTSUPP; 827 828 if (flags & EXT4_IOC_CHECKPOINT_FLAG_DRY_RUN) 829 return 0; 830 831 if (flags & EXT4_IOC_CHECKPOINT_FLAG_DISCARD) 832 flush_flags |= JBD2_JOURNAL_FLUSH_DISCARD; 833 834 if (flags & EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT) { 835 flush_flags |= JBD2_JOURNAL_FLUSH_ZEROOUT; 836 pr_info_ratelimited("warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow"); 837 } 838 839 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 840 err = jbd2_journal_flush(EXT4_SB(sb)->s_journal, flush_flags); 841 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 842 843 return err; 844 } 845 846 static long __ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 847 { 848 struct inode *inode = file_inode(filp); 849 struct super_block *sb = inode->i_sb; 850 struct user_namespace *mnt_userns = file_mnt_user_ns(filp); 851 852 ext4_debug("cmd = %u, arg = %lu\n", cmd, arg); 853 854 switch (cmd) { 855 case FS_IOC_GETFSMAP: 856 return ext4_ioc_getfsmap(sb, (void __user *)arg); 857 case EXT4_IOC_GETVERSION: 858 case EXT4_IOC_GETVERSION_OLD: 859 return put_user(inode->i_generation, (int __user *) arg); 860 case EXT4_IOC_SETVERSION: 861 case EXT4_IOC_SETVERSION_OLD: { 862 handle_t *handle; 863 struct ext4_iloc iloc; 864 __u32 generation; 865 int err; 866 867 if (!inode_owner_or_capable(mnt_userns, inode)) 868 return -EPERM; 869 870 if (ext4_has_metadata_csum(inode->i_sb)) { 871 ext4_warning(sb, "Setting inode version is not " 872 "supported with metadata_csum enabled."); 873 return -ENOTTY; 874 } 875 876 err = mnt_want_write_file(filp); 877 if (err) 878 return err; 879 if (get_user(generation, (int __user *) arg)) { 880 err = -EFAULT; 881 goto setversion_out; 882 } 883 884 inode_lock(inode); 885 handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 886 if (IS_ERR(handle)) { 887 err = PTR_ERR(handle); 888 goto unlock_out; 889 } 890 err = ext4_reserve_inode_write(handle, inode, &iloc); 891 if (err == 0) { 892 inode->i_ctime = current_time(inode); 893 inode->i_generation = generation; 894 err = ext4_mark_iloc_dirty(handle, inode, &iloc); 895 } 896 ext4_journal_stop(handle); 897 898 unlock_out: 899 inode_unlock(inode); 900 setversion_out: 901 mnt_drop_write_file(filp); 902 return err; 903 } 904 case EXT4_IOC_GROUP_EXTEND: { 905 ext4_fsblk_t n_blocks_count; 906 int err, err2=0; 907 908 err = ext4_resize_begin(sb); 909 if (err) 910 return err; 911 912 if (get_user(n_blocks_count, (__u32 __user *)arg)) { 913 err = -EFAULT; 914 goto group_extend_out; 915 } 916 917 err = mnt_want_write_file(filp); 918 if (err) 919 goto group_extend_out; 920 921 err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count); 922 if (EXT4_SB(sb)->s_journal) { 923 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 924 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal, 0); 925 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 926 } 927 if (err == 0) 928 err = err2; 929 mnt_drop_write_file(filp); 930 group_extend_out: 931 ext4_resize_end(sb); 932 return err; 933 } 934 935 case EXT4_IOC_MOVE_EXT: { 936 struct move_extent me; 937 struct fd donor; 938 int err; 939 940 if (!(filp->f_mode & FMODE_READ) || 941 !(filp->f_mode & FMODE_WRITE)) 942 return -EBADF; 943 944 if (copy_from_user(&me, 945 (struct move_extent __user *)arg, sizeof(me))) 946 return -EFAULT; 947 me.moved_len = 0; 948 949 donor = fdget(me.donor_fd); 950 if (!donor.file) 951 return -EBADF; 952 953 if (!(donor.file->f_mode & FMODE_WRITE)) { 954 err = -EBADF; 955 goto mext_out; 956 } 957 958 if (ext4_has_feature_bigalloc(sb)) { 959 ext4_msg(sb, KERN_ERR, 960 "Online defrag not supported with bigalloc"); 961 err = -EOPNOTSUPP; 962 goto mext_out; 963 } else if (IS_DAX(inode)) { 964 ext4_msg(sb, KERN_ERR, 965 "Online defrag not supported with DAX"); 966 err = -EOPNOTSUPP; 967 goto mext_out; 968 } 969 970 err = mnt_want_write_file(filp); 971 if (err) 972 goto mext_out; 973 974 err = ext4_move_extents(filp, donor.file, me.orig_start, 975 me.donor_start, me.len, &me.moved_len); 976 mnt_drop_write_file(filp); 977 978 if (copy_to_user((struct move_extent __user *)arg, 979 &me, sizeof(me))) 980 err = -EFAULT; 981 mext_out: 982 fdput(donor); 983 return err; 984 } 985 986 case EXT4_IOC_GROUP_ADD: { 987 struct ext4_new_group_data input; 988 989 if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg, 990 sizeof(input))) 991 return -EFAULT; 992 993 return ext4_ioctl_group_add(filp, &input); 994 } 995 996 case EXT4_IOC_MIGRATE: 997 { 998 int err; 999 if (!inode_owner_or_capable(mnt_userns, inode)) 1000 return -EACCES; 1001 1002 err = mnt_want_write_file(filp); 1003 if (err) 1004 return err; 1005 /* 1006 * inode_mutex prevent write and truncate on the file. 1007 * Read still goes through. We take i_data_sem in 1008 * ext4_ext_swap_inode_data before we switch the 1009 * inode format to prevent read. 1010 */ 1011 inode_lock((inode)); 1012 err = ext4_ext_migrate(inode); 1013 inode_unlock((inode)); 1014 mnt_drop_write_file(filp); 1015 return err; 1016 } 1017 1018 case EXT4_IOC_ALLOC_DA_BLKS: 1019 { 1020 int err; 1021 if (!inode_owner_or_capable(mnt_userns, inode)) 1022 return -EACCES; 1023 1024 err = mnt_want_write_file(filp); 1025 if (err) 1026 return err; 1027 err = ext4_alloc_da_blocks(inode); 1028 mnt_drop_write_file(filp); 1029 return err; 1030 } 1031 1032 case EXT4_IOC_SWAP_BOOT: 1033 { 1034 int err; 1035 if (!(filp->f_mode & FMODE_WRITE)) 1036 return -EBADF; 1037 err = mnt_want_write_file(filp); 1038 if (err) 1039 return err; 1040 err = swap_inode_boot_loader(sb, mnt_userns, inode); 1041 mnt_drop_write_file(filp); 1042 return err; 1043 } 1044 1045 case EXT4_IOC_RESIZE_FS: { 1046 ext4_fsblk_t n_blocks_count; 1047 int err = 0, err2 = 0; 1048 ext4_group_t o_group = EXT4_SB(sb)->s_groups_count; 1049 1050 if (copy_from_user(&n_blocks_count, (__u64 __user *)arg, 1051 sizeof(__u64))) { 1052 return -EFAULT; 1053 } 1054 1055 err = ext4_resize_begin(sb); 1056 if (err) 1057 return err; 1058 1059 err = mnt_want_write_file(filp); 1060 if (err) 1061 goto resizefs_out; 1062 1063 err = ext4_resize_fs(sb, n_blocks_count); 1064 if (EXT4_SB(sb)->s_journal) { 1065 ext4_fc_mark_ineligible(sb, EXT4_FC_REASON_RESIZE); 1066 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 1067 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal, 0); 1068 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 1069 } 1070 if (err == 0) 1071 err = err2; 1072 mnt_drop_write_file(filp); 1073 if (!err && (o_group < EXT4_SB(sb)->s_groups_count) && 1074 ext4_has_group_desc_csum(sb) && 1075 test_opt(sb, INIT_INODE_TABLE)) 1076 err = ext4_register_li_request(sb, o_group); 1077 1078 resizefs_out: 1079 ext4_resize_end(sb); 1080 return err; 1081 } 1082 1083 case FITRIM: 1084 { 1085 struct request_queue *q = bdev_get_queue(sb->s_bdev); 1086 struct fstrim_range range; 1087 int ret = 0; 1088 1089 if (!capable(CAP_SYS_ADMIN)) 1090 return -EPERM; 1091 1092 if (!blk_queue_discard(q)) 1093 return -EOPNOTSUPP; 1094 1095 /* 1096 * We haven't replayed the journal, so we cannot use our 1097 * block-bitmap-guided storage zapping commands. 1098 */ 1099 if (test_opt(sb, NOLOAD) && ext4_has_feature_journal(sb)) 1100 return -EROFS; 1101 1102 if (copy_from_user(&range, (struct fstrim_range __user *)arg, 1103 sizeof(range))) 1104 return -EFAULT; 1105 1106 range.minlen = max((unsigned int)range.minlen, 1107 q->limits.discard_granularity); 1108 ret = ext4_trim_fs(sb, &range); 1109 if (ret < 0) 1110 return ret; 1111 1112 if (copy_to_user((struct fstrim_range __user *)arg, &range, 1113 sizeof(range))) 1114 return -EFAULT; 1115 1116 return 0; 1117 } 1118 case EXT4_IOC_PRECACHE_EXTENTS: 1119 return ext4_ext_precache(inode); 1120 1121 case FS_IOC_SET_ENCRYPTION_POLICY: 1122 if (!ext4_has_feature_encrypt(sb)) 1123 return -EOPNOTSUPP; 1124 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); 1125 1126 case FS_IOC_GET_ENCRYPTION_PWSALT: { 1127 #ifdef CONFIG_FS_ENCRYPTION 1128 int err, err2; 1129 struct ext4_sb_info *sbi = EXT4_SB(sb); 1130 handle_t *handle; 1131 1132 if (!ext4_has_feature_encrypt(sb)) 1133 return -EOPNOTSUPP; 1134 if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) { 1135 err = mnt_want_write_file(filp); 1136 if (err) 1137 return err; 1138 handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1); 1139 if (IS_ERR(handle)) { 1140 err = PTR_ERR(handle); 1141 goto pwsalt_err_exit; 1142 } 1143 err = ext4_journal_get_write_access(handle, sbi->s_sbh); 1144 if (err) 1145 goto pwsalt_err_journal; 1146 lock_buffer(sbi->s_sbh); 1147 generate_random_uuid(sbi->s_es->s_encrypt_pw_salt); 1148 ext4_superblock_csum_set(sb); 1149 unlock_buffer(sbi->s_sbh); 1150 err = ext4_handle_dirty_metadata(handle, NULL, 1151 sbi->s_sbh); 1152 pwsalt_err_journal: 1153 err2 = ext4_journal_stop(handle); 1154 if (err2 && !err) 1155 err = err2; 1156 pwsalt_err_exit: 1157 mnt_drop_write_file(filp); 1158 if (err) 1159 return err; 1160 } 1161 if (copy_to_user((void __user *) arg, 1162 sbi->s_es->s_encrypt_pw_salt, 16)) 1163 return -EFAULT; 1164 return 0; 1165 #else 1166 return -EOPNOTSUPP; 1167 #endif 1168 } 1169 case FS_IOC_GET_ENCRYPTION_POLICY: 1170 if (!ext4_has_feature_encrypt(sb)) 1171 return -EOPNOTSUPP; 1172 return fscrypt_ioctl_get_policy(filp, (void __user *)arg); 1173 1174 case FS_IOC_GET_ENCRYPTION_POLICY_EX: 1175 if (!ext4_has_feature_encrypt(sb)) 1176 return -EOPNOTSUPP; 1177 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg); 1178 1179 case FS_IOC_ADD_ENCRYPTION_KEY: 1180 if (!ext4_has_feature_encrypt(sb)) 1181 return -EOPNOTSUPP; 1182 return fscrypt_ioctl_add_key(filp, (void __user *)arg); 1183 1184 case FS_IOC_REMOVE_ENCRYPTION_KEY: 1185 if (!ext4_has_feature_encrypt(sb)) 1186 return -EOPNOTSUPP; 1187 return fscrypt_ioctl_remove_key(filp, (void __user *)arg); 1188 1189 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: 1190 if (!ext4_has_feature_encrypt(sb)) 1191 return -EOPNOTSUPP; 1192 return fscrypt_ioctl_remove_key_all_users(filp, 1193 (void __user *)arg); 1194 case FS_IOC_GET_ENCRYPTION_KEY_STATUS: 1195 if (!ext4_has_feature_encrypt(sb)) 1196 return -EOPNOTSUPP; 1197 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg); 1198 1199 case FS_IOC_GET_ENCRYPTION_NONCE: 1200 if (!ext4_has_feature_encrypt(sb)) 1201 return -EOPNOTSUPP; 1202 return fscrypt_ioctl_get_nonce(filp, (void __user *)arg); 1203 1204 case EXT4_IOC_CLEAR_ES_CACHE: 1205 { 1206 if (!inode_owner_or_capable(mnt_userns, inode)) 1207 return -EACCES; 1208 ext4_clear_inode_es(inode); 1209 return 0; 1210 } 1211 1212 case EXT4_IOC_GETSTATE: 1213 { 1214 __u32 state = 0; 1215 1216 if (ext4_test_inode_state(inode, EXT4_STATE_EXT_PRECACHED)) 1217 state |= EXT4_STATE_FLAG_EXT_PRECACHED; 1218 if (ext4_test_inode_state(inode, EXT4_STATE_NEW)) 1219 state |= EXT4_STATE_FLAG_NEW; 1220 if (ext4_test_inode_state(inode, EXT4_STATE_NEWENTRY)) 1221 state |= EXT4_STATE_FLAG_NEWENTRY; 1222 if (ext4_test_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE)) 1223 state |= EXT4_STATE_FLAG_DA_ALLOC_CLOSE; 1224 1225 return put_user(state, (__u32 __user *) arg); 1226 } 1227 1228 case EXT4_IOC_GET_ES_CACHE: 1229 return ext4_ioctl_get_es_cache(filp, arg); 1230 1231 case EXT4_IOC_SHUTDOWN: 1232 return ext4_shutdown(sb, arg); 1233 1234 case FS_IOC_ENABLE_VERITY: 1235 if (!ext4_has_feature_verity(sb)) 1236 return -EOPNOTSUPP; 1237 return fsverity_ioctl_enable(filp, (const void __user *)arg); 1238 1239 case FS_IOC_MEASURE_VERITY: 1240 if (!ext4_has_feature_verity(sb)) 1241 return -EOPNOTSUPP; 1242 return fsverity_ioctl_measure(filp, (void __user *)arg); 1243 1244 case FS_IOC_READ_VERITY_METADATA: 1245 if (!ext4_has_feature_verity(sb)) 1246 return -EOPNOTSUPP; 1247 return fsverity_ioctl_read_metadata(filp, 1248 (const void __user *)arg); 1249 1250 case EXT4_IOC_CHECKPOINT: 1251 return ext4_ioctl_checkpoint(filp, arg); 1252 1253 default: 1254 return -ENOTTY; 1255 } 1256 } 1257 1258 long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 1259 { 1260 long ret; 1261 1262 ext4_fc_start_update(file_inode(filp)); 1263 ret = __ext4_ioctl(filp, cmd, arg); 1264 ext4_fc_stop_update(file_inode(filp)); 1265 1266 return ret; 1267 } 1268 1269 #ifdef CONFIG_COMPAT 1270 long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 1271 { 1272 /* These are just misnamed, they actually get/put from/to user an int */ 1273 switch (cmd) { 1274 case EXT4_IOC32_GETVERSION: 1275 cmd = EXT4_IOC_GETVERSION; 1276 break; 1277 case EXT4_IOC32_SETVERSION: 1278 cmd = EXT4_IOC_SETVERSION; 1279 break; 1280 case EXT4_IOC32_GROUP_EXTEND: 1281 cmd = EXT4_IOC_GROUP_EXTEND; 1282 break; 1283 case EXT4_IOC32_GETVERSION_OLD: 1284 cmd = EXT4_IOC_GETVERSION_OLD; 1285 break; 1286 case EXT4_IOC32_SETVERSION_OLD: 1287 cmd = EXT4_IOC_SETVERSION_OLD; 1288 break; 1289 case EXT4_IOC32_GETRSVSZ: 1290 cmd = EXT4_IOC_GETRSVSZ; 1291 break; 1292 case EXT4_IOC32_SETRSVSZ: 1293 cmd = EXT4_IOC_SETRSVSZ; 1294 break; 1295 case EXT4_IOC32_GROUP_ADD: { 1296 struct compat_ext4_new_group_input __user *uinput; 1297 struct ext4_new_group_data input; 1298 int err; 1299 1300 uinput = compat_ptr(arg); 1301 err = get_user(input.group, &uinput->group); 1302 err |= get_user(input.block_bitmap, &uinput->block_bitmap); 1303 err |= get_user(input.inode_bitmap, &uinput->inode_bitmap); 1304 err |= get_user(input.inode_table, &uinput->inode_table); 1305 err |= get_user(input.blocks_count, &uinput->blocks_count); 1306 err |= get_user(input.reserved_blocks, 1307 &uinput->reserved_blocks); 1308 if (err) 1309 return -EFAULT; 1310 return ext4_ioctl_group_add(file, &input); 1311 } 1312 case EXT4_IOC_MOVE_EXT: 1313 case EXT4_IOC_RESIZE_FS: 1314 case FITRIM: 1315 case EXT4_IOC_PRECACHE_EXTENTS: 1316 case FS_IOC_SET_ENCRYPTION_POLICY: 1317 case FS_IOC_GET_ENCRYPTION_PWSALT: 1318 case FS_IOC_GET_ENCRYPTION_POLICY: 1319 case FS_IOC_GET_ENCRYPTION_POLICY_EX: 1320 case FS_IOC_ADD_ENCRYPTION_KEY: 1321 case FS_IOC_REMOVE_ENCRYPTION_KEY: 1322 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: 1323 case FS_IOC_GET_ENCRYPTION_KEY_STATUS: 1324 case FS_IOC_GET_ENCRYPTION_NONCE: 1325 case EXT4_IOC_SHUTDOWN: 1326 case FS_IOC_GETFSMAP: 1327 case FS_IOC_ENABLE_VERITY: 1328 case FS_IOC_MEASURE_VERITY: 1329 case FS_IOC_READ_VERITY_METADATA: 1330 case EXT4_IOC_CLEAR_ES_CACHE: 1331 case EXT4_IOC_GETSTATE: 1332 case EXT4_IOC_GET_ES_CACHE: 1333 case EXT4_IOC_CHECKPOINT: 1334 break; 1335 default: 1336 return -ENOIOCTLCMD; 1337 } 1338 return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); 1339 } 1340 #endif 1341