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 if (ext4_has_feature_bigalloc(sb)) { 696 ext4_msg(sb, KERN_ERR, 697 "Online resizing not supported with bigalloc"); 698 err = -EOPNOTSUPP; 699 goto group_add_out; 700 } 701 702 err = mnt_want_write_file(file); 703 if (err) 704 goto group_add_out; 705 706 err = ext4_group_add(sb, input); 707 if (EXT4_SB(sb)->s_journal) { 708 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 709 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal, 0); 710 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 711 } 712 if (err == 0) 713 err = err2; 714 mnt_drop_write_file(file); 715 if (!err && ext4_has_group_desc_csum(sb) && 716 test_opt(sb, INIT_INODE_TABLE)) 717 err = ext4_register_li_request(sb, input->group); 718 group_add_out: 719 ext4_resize_end(sb); 720 return err; 721 } 722 723 int ext4_fileattr_get(struct dentry *dentry, struct fileattr *fa) 724 { 725 struct inode *inode = d_inode(dentry); 726 struct ext4_inode_info *ei = EXT4_I(inode); 727 u32 flags = ei->i_flags & EXT4_FL_USER_VISIBLE; 728 729 if (S_ISREG(inode->i_mode)) 730 flags &= ~FS_PROJINHERIT_FL; 731 732 fileattr_fill_flags(fa, flags); 733 if (ext4_has_feature_project(inode->i_sb)) 734 fa->fsx_projid = from_kprojid(&init_user_ns, ei->i_projid); 735 736 return 0; 737 } 738 739 int ext4_fileattr_set(struct user_namespace *mnt_userns, 740 struct dentry *dentry, struct fileattr *fa) 741 { 742 struct inode *inode = d_inode(dentry); 743 u32 flags = fa->flags; 744 int err = -EOPNOTSUPP; 745 746 ext4_fc_start_update(inode); 747 if (flags & ~EXT4_FL_USER_VISIBLE) 748 goto out; 749 750 /* 751 * chattr(1) grabs flags via GETFLAGS, modifies the result and 752 * passes that to SETFLAGS. So we cannot easily make SETFLAGS 753 * more restrictive than just silently masking off visible but 754 * not settable flags as we always did. 755 */ 756 flags &= EXT4_FL_USER_MODIFIABLE; 757 if (ext4_mask_flags(inode->i_mode, flags) != flags) 758 goto out; 759 err = ext4_ioctl_check_immutable(inode, fa->fsx_projid, flags); 760 if (err) 761 goto out; 762 err = ext4_ioctl_setflags(inode, flags); 763 if (err) 764 goto out; 765 err = ext4_ioctl_setproject(inode, fa->fsx_projid); 766 out: 767 ext4_fc_stop_update(inode); 768 return err; 769 } 770 771 /* So that the fiemap access checks can't overflow on 32 bit machines. */ 772 #define FIEMAP_MAX_EXTENTS (UINT_MAX / sizeof(struct fiemap_extent)) 773 774 static int ext4_ioctl_get_es_cache(struct file *filp, unsigned long arg) 775 { 776 struct fiemap fiemap; 777 struct fiemap __user *ufiemap = (struct fiemap __user *) arg; 778 struct fiemap_extent_info fieinfo = { 0, }; 779 struct inode *inode = file_inode(filp); 780 int error; 781 782 if (copy_from_user(&fiemap, ufiemap, sizeof(fiemap))) 783 return -EFAULT; 784 785 if (fiemap.fm_extent_count > FIEMAP_MAX_EXTENTS) 786 return -EINVAL; 787 788 fieinfo.fi_flags = fiemap.fm_flags; 789 fieinfo.fi_extents_max = fiemap.fm_extent_count; 790 fieinfo.fi_extents_start = ufiemap->fm_extents; 791 792 error = ext4_get_es_cache(inode, &fieinfo, fiemap.fm_start, 793 fiemap.fm_length); 794 fiemap.fm_flags = fieinfo.fi_flags; 795 fiemap.fm_mapped_extents = fieinfo.fi_extents_mapped; 796 if (copy_to_user(ufiemap, &fiemap, sizeof(fiemap))) 797 error = -EFAULT; 798 799 return error; 800 } 801 802 static int ext4_ioctl_checkpoint(struct file *filp, unsigned long arg) 803 { 804 int err = 0; 805 __u32 flags = 0; 806 unsigned int flush_flags = 0; 807 struct super_block *sb = file_inode(filp)->i_sb; 808 struct request_queue *q; 809 810 if (copy_from_user(&flags, (__u32 __user *)arg, 811 sizeof(__u32))) 812 return -EFAULT; 813 814 if (!capable(CAP_SYS_ADMIN)) 815 return -EPERM; 816 817 /* check for invalid bits set */ 818 if ((flags & ~EXT4_IOC_CHECKPOINT_FLAG_VALID) || 819 ((flags & JBD2_JOURNAL_FLUSH_DISCARD) && 820 (flags & JBD2_JOURNAL_FLUSH_ZEROOUT))) 821 return -EINVAL; 822 823 if (!EXT4_SB(sb)->s_journal) 824 return -ENODEV; 825 826 if (flags & ~EXT4_IOC_CHECKPOINT_FLAG_VALID) 827 return -EINVAL; 828 829 q = bdev_get_queue(EXT4_SB(sb)->s_journal->j_dev); 830 if (!q) 831 return -ENXIO; 832 if ((flags & JBD2_JOURNAL_FLUSH_DISCARD) && !blk_queue_discard(q)) 833 return -EOPNOTSUPP; 834 835 if (flags & EXT4_IOC_CHECKPOINT_FLAG_DRY_RUN) 836 return 0; 837 838 if (flags & EXT4_IOC_CHECKPOINT_FLAG_DISCARD) 839 flush_flags |= JBD2_JOURNAL_FLUSH_DISCARD; 840 841 if (flags & EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT) { 842 flush_flags |= JBD2_JOURNAL_FLUSH_ZEROOUT; 843 pr_info_ratelimited("warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow"); 844 } 845 846 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 847 err = jbd2_journal_flush(EXT4_SB(sb)->s_journal, flush_flags); 848 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 849 850 return err; 851 } 852 853 static long __ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 854 { 855 struct inode *inode = file_inode(filp); 856 struct super_block *sb = inode->i_sb; 857 struct user_namespace *mnt_userns = file_mnt_user_ns(filp); 858 859 ext4_debug("cmd = %u, arg = %lu\n", cmd, arg); 860 861 switch (cmd) { 862 case FS_IOC_GETFSMAP: 863 return ext4_ioc_getfsmap(sb, (void __user *)arg); 864 case EXT4_IOC_GETVERSION: 865 case EXT4_IOC_GETVERSION_OLD: 866 return put_user(inode->i_generation, (int __user *) arg); 867 case EXT4_IOC_SETVERSION: 868 case EXT4_IOC_SETVERSION_OLD: { 869 handle_t *handle; 870 struct ext4_iloc iloc; 871 __u32 generation; 872 int err; 873 874 if (!inode_owner_or_capable(mnt_userns, inode)) 875 return -EPERM; 876 877 if (ext4_has_metadata_csum(inode->i_sb)) { 878 ext4_warning(sb, "Setting inode version is not " 879 "supported with metadata_csum enabled."); 880 return -ENOTTY; 881 } 882 883 err = mnt_want_write_file(filp); 884 if (err) 885 return err; 886 if (get_user(generation, (int __user *) arg)) { 887 err = -EFAULT; 888 goto setversion_out; 889 } 890 891 inode_lock(inode); 892 handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 893 if (IS_ERR(handle)) { 894 err = PTR_ERR(handle); 895 goto unlock_out; 896 } 897 err = ext4_reserve_inode_write(handle, inode, &iloc); 898 if (err == 0) { 899 inode->i_ctime = current_time(inode); 900 inode->i_generation = generation; 901 err = ext4_mark_iloc_dirty(handle, inode, &iloc); 902 } 903 ext4_journal_stop(handle); 904 905 unlock_out: 906 inode_unlock(inode); 907 setversion_out: 908 mnt_drop_write_file(filp); 909 return err; 910 } 911 case EXT4_IOC_GROUP_EXTEND: { 912 ext4_fsblk_t n_blocks_count; 913 int err, err2=0; 914 915 err = ext4_resize_begin(sb); 916 if (err) 917 return err; 918 919 if (get_user(n_blocks_count, (__u32 __user *)arg)) { 920 err = -EFAULT; 921 goto group_extend_out; 922 } 923 924 if (ext4_has_feature_bigalloc(sb)) { 925 ext4_msg(sb, KERN_ERR, 926 "Online resizing not supported with bigalloc"); 927 err = -EOPNOTSUPP; 928 goto group_extend_out; 929 } 930 931 err = mnt_want_write_file(filp); 932 if (err) 933 goto group_extend_out; 934 935 err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count); 936 if (EXT4_SB(sb)->s_journal) { 937 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 938 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal, 0); 939 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 940 } 941 if (err == 0) 942 err = err2; 943 mnt_drop_write_file(filp); 944 group_extend_out: 945 ext4_resize_end(sb); 946 return err; 947 } 948 949 case EXT4_IOC_MOVE_EXT: { 950 struct move_extent me; 951 struct fd donor; 952 int err; 953 954 if (!(filp->f_mode & FMODE_READ) || 955 !(filp->f_mode & FMODE_WRITE)) 956 return -EBADF; 957 958 if (copy_from_user(&me, 959 (struct move_extent __user *)arg, sizeof(me))) 960 return -EFAULT; 961 me.moved_len = 0; 962 963 donor = fdget(me.donor_fd); 964 if (!donor.file) 965 return -EBADF; 966 967 if (!(donor.file->f_mode & FMODE_WRITE)) { 968 err = -EBADF; 969 goto mext_out; 970 } 971 972 if (ext4_has_feature_bigalloc(sb)) { 973 ext4_msg(sb, KERN_ERR, 974 "Online defrag not supported with bigalloc"); 975 err = -EOPNOTSUPP; 976 goto mext_out; 977 } else if (IS_DAX(inode)) { 978 ext4_msg(sb, KERN_ERR, 979 "Online defrag not supported with DAX"); 980 err = -EOPNOTSUPP; 981 goto mext_out; 982 } 983 984 err = mnt_want_write_file(filp); 985 if (err) 986 goto mext_out; 987 988 err = ext4_move_extents(filp, donor.file, me.orig_start, 989 me.donor_start, me.len, &me.moved_len); 990 mnt_drop_write_file(filp); 991 992 if (copy_to_user((struct move_extent __user *)arg, 993 &me, sizeof(me))) 994 err = -EFAULT; 995 mext_out: 996 fdput(donor); 997 return err; 998 } 999 1000 case EXT4_IOC_GROUP_ADD: { 1001 struct ext4_new_group_data input; 1002 1003 if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg, 1004 sizeof(input))) 1005 return -EFAULT; 1006 1007 return ext4_ioctl_group_add(filp, &input); 1008 } 1009 1010 case EXT4_IOC_MIGRATE: 1011 { 1012 int err; 1013 if (!inode_owner_or_capable(mnt_userns, inode)) 1014 return -EACCES; 1015 1016 err = mnt_want_write_file(filp); 1017 if (err) 1018 return err; 1019 /* 1020 * inode_mutex prevent write and truncate on the file. 1021 * Read still goes through. We take i_data_sem in 1022 * ext4_ext_swap_inode_data before we switch the 1023 * inode format to prevent read. 1024 */ 1025 inode_lock((inode)); 1026 err = ext4_ext_migrate(inode); 1027 inode_unlock((inode)); 1028 mnt_drop_write_file(filp); 1029 return err; 1030 } 1031 1032 case EXT4_IOC_ALLOC_DA_BLKS: 1033 { 1034 int err; 1035 if (!inode_owner_or_capable(mnt_userns, inode)) 1036 return -EACCES; 1037 1038 err = mnt_want_write_file(filp); 1039 if (err) 1040 return err; 1041 err = ext4_alloc_da_blocks(inode); 1042 mnt_drop_write_file(filp); 1043 return err; 1044 } 1045 1046 case EXT4_IOC_SWAP_BOOT: 1047 { 1048 int err; 1049 if (!(filp->f_mode & FMODE_WRITE)) 1050 return -EBADF; 1051 err = mnt_want_write_file(filp); 1052 if (err) 1053 return err; 1054 err = swap_inode_boot_loader(sb, mnt_userns, inode); 1055 mnt_drop_write_file(filp); 1056 return err; 1057 } 1058 1059 case EXT4_IOC_RESIZE_FS: { 1060 ext4_fsblk_t n_blocks_count; 1061 int err = 0, err2 = 0; 1062 ext4_group_t o_group = EXT4_SB(sb)->s_groups_count; 1063 1064 if (copy_from_user(&n_blocks_count, (__u64 __user *)arg, 1065 sizeof(__u64))) { 1066 return -EFAULT; 1067 } 1068 1069 err = ext4_resize_begin(sb); 1070 if (err) 1071 return err; 1072 1073 err = mnt_want_write_file(filp); 1074 if (err) 1075 goto resizefs_out; 1076 1077 err = ext4_resize_fs(sb, n_blocks_count); 1078 if (EXT4_SB(sb)->s_journal) { 1079 ext4_fc_mark_ineligible(sb, EXT4_FC_REASON_RESIZE); 1080 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 1081 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal, 0); 1082 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 1083 } 1084 if (err == 0) 1085 err = err2; 1086 mnt_drop_write_file(filp); 1087 if (!err && (o_group < EXT4_SB(sb)->s_groups_count) && 1088 ext4_has_group_desc_csum(sb) && 1089 test_opt(sb, INIT_INODE_TABLE)) 1090 err = ext4_register_li_request(sb, o_group); 1091 1092 resizefs_out: 1093 ext4_resize_end(sb); 1094 return err; 1095 } 1096 1097 case FITRIM: 1098 { 1099 struct request_queue *q = bdev_get_queue(sb->s_bdev); 1100 struct fstrim_range range; 1101 int ret = 0; 1102 1103 if (!capable(CAP_SYS_ADMIN)) 1104 return -EPERM; 1105 1106 if (!blk_queue_discard(q)) 1107 return -EOPNOTSUPP; 1108 1109 /* 1110 * We haven't replayed the journal, so we cannot use our 1111 * block-bitmap-guided storage zapping commands. 1112 */ 1113 if (test_opt(sb, NOLOAD) && ext4_has_feature_journal(sb)) 1114 return -EROFS; 1115 1116 if (copy_from_user(&range, (struct fstrim_range __user *)arg, 1117 sizeof(range))) 1118 return -EFAULT; 1119 1120 range.minlen = max((unsigned int)range.minlen, 1121 q->limits.discard_granularity); 1122 ret = ext4_trim_fs(sb, &range); 1123 if (ret < 0) 1124 return ret; 1125 1126 if (copy_to_user((struct fstrim_range __user *)arg, &range, 1127 sizeof(range))) 1128 return -EFAULT; 1129 1130 return 0; 1131 } 1132 case EXT4_IOC_PRECACHE_EXTENTS: 1133 return ext4_ext_precache(inode); 1134 1135 case FS_IOC_SET_ENCRYPTION_POLICY: 1136 if (!ext4_has_feature_encrypt(sb)) 1137 return -EOPNOTSUPP; 1138 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); 1139 1140 case FS_IOC_GET_ENCRYPTION_PWSALT: { 1141 #ifdef CONFIG_FS_ENCRYPTION 1142 int err, err2; 1143 struct ext4_sb_info *sbi = EXT4_SB(sb); 1144 handle_t *handle; 1145 1146 if (!ext4_has_feature_encrypt(sb)) 1147 return -EOPNOTSUPP; 1148 if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) { 1149 err = mnt_want_write_file(filp); 1150 if (err) 1151 return err; 1152 handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1); 1153 if (IS_ERR(handle)) { 1154 err = PTR_ERR(handle); 1155 goto pwsalt_err_exit; 1156 } 1157 err = ext4_journal_get_write_access(handle, sbi->s_sbh); 1158 if (err) 1159 goto pwsalt_err_journal; 1160 lock_buffer(sbi->s_sbh); 1161 generate_random_uuid(sbi->s_es->s_encrypt_pw_salt); 1162 ext4_superblock_csum_set(sb); 1163 unlock_buffer(sbi->s_sbh); 1164 err = ext4_handle_dirty_metadata(handle, NULL, 1165 sbi->s_sbh); 1166 pwsalt_err_journal: 1167 err2 = ext4_journal_stop(handle); 1168 if (err2 && !err) 1169 err = err2; 1170 pwsalt_err_exit: 1171 mnt_drop_write_file(filp); 1172 if (err) 1173 return err; 1174 } 1175 if (copy_to_user((void __user *) arg, 1176 sbi->s_es->s_encrypt_pw_salt, 16)) 1177 return -EFAULT; 1178 return 0; 1179 #else 1180 return -EOPNOTSUPP; 1181 #endif 1182 } 1183 case FS_IOC_GET_ENCRYPTION_POLICY: 1184 if (!ext4_has_feature_encrypt(sb)) 1185 return -EOPNOTSUPP; 1186 return fscrypt_ioctl_get_policy(filp, (void __user *)arg); 1187 1188 case FS_IOC_GET_ENCRYPTION_POLICY_EX: 1189 if (!ext4_has_feature_encrypt(sb)) 1190 return -EOPNOTSUPP; 1191 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg); 1192 1193 case FS_IOC_ADD_ENCRYPTION_KEY: 1194 if (!ext4_has_feature_encrypt(sb)) 1195 return -EOPNOTSUPP; 1196 return fscrypt_ioctl_add_key(filp, (void __user *)arg); 1197 1198 case FS_IOC_REMOVE_ENCRYPTION_KEY: 1199 if (!ext4_has_feature_encrypt(sb)) 1200 return -EOPNOTSUPP; 1201 return fscrypt_ioctl_remove_key(filp, (void __user *)arg); 1202 1203 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: 1204 if (!ext4_has_feature_encrypt(sb)) 1205 return -EOPNOTSUPP; 1206 return fscrypt_ioctl_remove_key_all_users(filp, 1207 (void __user *)arg); 1208 case FS_IOC_GET_ENCRYPTION_KEY_STATUS: 1209 if (!ext4_has_feature_encrypt(sb)) 1210 return -EOPNOTSUPP; 1211 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg); 1212 1213 case FS_IOC_GET_ENCRYPTION_NONCE: 1214 if (!ext4_has_feature_encrypt(sb)) 1215 return -EOPNOTSUPP; 1216 return fscrypt_ioctl_get_nonce(filp, (void __user *)arg); 1217 1218 case EXT4_IOC_CLEAR_ES_CACHE: 1219 { 1220 if (!inode_owner_or_capable(mnt_userns, inode)) 1221 return -EACCES; 1222 ext4_clear_inode_es(inode); 1223 return 0; 1224 } 1225 1226 case EXT4_IOC_GETSTATE: 1227 { 1228 __u32 state = 0; 1229 1230 if (ext4_test_inode_state(inode, EXT4_STATE_EXT_PRECACHED)) 1231 state |= EXT4_STATE_FLAG_EXT_PRECACHED; 1232 if (ext4_test_inode_state(inode, EXT4_STATE_NEW)) 1233 state |= EXT4_STATE_FLAG_NEW; 1234 if (ext4_test_inode_state(inode, EXT4_STATE_NEWENTRY)) 1235 state |= EXT4_STATE_FLAG_NEWENTRY; 1236 if (ext4_test_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE)) 1237 state |= EXT4_STATE_FLAG_DA_ALLOC_CLOSE; 1238 1239 return put_user(state, (__u32 __user *) arg); 1240 } 1241 1242 case EXT4_IOC_GET_ES_CACHE: 1243 return ext4_ioctl_get_es_cache(filp, arg); 1244 1245 case EXT4_IOC_SHUTDOWN: 1246 return ext4_shutdown(sb, arg); 1247 1248 case FS_IOC_ENABLE_VERITY: 1249 if (!ext4_has_feature_verity(sb)) 1250 return -EOPNOTSUPP; 1251 return fsverity_ioctl_enable(filp, (const void __user *)arg); 1252 1253 case FS_IOC_MEASURE_VERITY: 1254 if (!ext4_has_feature_verity(sb)) 1255 return -EOPNOTSUPP; 1256 return fsverity_ioctl_measure(filp, (void __user *)arg); 1257 1258 case FS_IOC_READ_VERITY_METADATA: 1259 if (!ext4_has_feature_verity(sb)) 1260 return -EOPNOTSUPP; 1261 return fsverity_ioctl_read_metadata(filp, 1262 (const void __user *)arg); 1263 1264 case EXT4_IOC_CHECKPOINT: 1265 return ext4_ioctl_checkpoint(filp, arg); 1266 1267 default: 1268 return -ENOTTY; 1269 } 1270 } 1271 1272 long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 1273 { 1274 long ret; 1275 1276 ext4_fc_start_update(file_inode(filp)); 1277 ret = __ext4_ioctl(filp, cmd, arg); 1278 ext4_fc_stop_update(file_inode(filp)); 1279 1280 return ret; 1281 } 1282 1283 #ifdef CONFIG_COMPAT 1284 long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 1285 { 1286 /* These are just misnamed, they actually get/put from/to user an int */ 1287 switch (cmd) { 1288 case EXT4_IOC32_GETVERSION: 1289 cmd = EXT4_IOC_GETVERSION; 1290 break; 1291 case EXT4_IOC32_SETVERSION: 1292 cmd = EXT4_IOC_SETVERSION; 1293 break; 1294 case EXT4_IOC32_GROUP_EXTEND: 1295 cmd = EXT4_IOC_GROUP_EXTEND; 1296 break; 1297 case EXT4_IOC32_GETVERSION_OLD: 1298 cmd = EXT4_IOC_GETVERSION_OLD; 1299 break; 1300 case EXT4_IOC32_SETVERSION_OLD: 1301 cmd = EXT4_IOC_SETVERSION_OLD; 1302 break; 1303 case EXT4_IOC32_GETRSVSZ: 1304 cmd = EXT4_IOC_GETRSVSZ; 1305 break; 1306 case EXT4_IOC32_SETRSVSZ: 1307 cmd = EXT4_IOC_SETRSVSZ; 1308 break; 1309 case EXT4_IOC32_GROUP_ADD: { 1310 struct compat_ext4_new_group_input __user *uinput; 1311 struct ext4_new_group_data input; 1312 int err; 1313 1314 uinput = compat_ptr(arg); 1315 err = get_user(input.group, &uinput->group); 1316 err |= get_user(input.block_bitmap, &uinput->block_bitmap); 1317 err |= get_user(input.inode_bitmap, &uinput->inode_bitmap); 1318 err |= get_user(input.inode_table, &uinput->inode_table); 1319 err |= get_user(input.blocks_count, &uinput->blocks_count); 1320 err |= get_user(input.reserved_blocks, 1321 &uinput->reserved_blocks); 1322 if (err) 1323 return -EFAULT; 1324 return ext4_ioctl_group_add(file, &input); 1325 } 1326 case EXT4_IOC_MOVE_EXT: 1327 case EXT4_IOC_RESIZE_FS: 1328 case FITRIM: 1329 case EXT4_IOC_PRECACHE_EXTENTS: 1330 case FS_IOC_SET_ENCRYPTION_POLICY: 1331 case FS_IOC_GET_ENCRYPTION_PWSALT: 1332 case FS_IOC_GET_ENCRYPTION_POLICY: 1333 case FS_IOC_GET_ENCRYPTION_POLICY_EX: 1334 case FS_IOC_ADD_ENCRYPTION_KEY: 1335 case FS_IOC_REMOVE_ENCRYPTION_KEY: 1336 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: 1337 case FS_IOC_GET_ENCRYPTION_KEY_STATUS: 1338 case FS_IOC_GET_ENCRYPTION_NONCE: 1339 case EXT4_IOC_SHUTDOWN: 1340 case FS_IOC_GETFSMAP: 1341 case FS_IOC_ENABLE_VERITY: 1342 case FS_IOC_MEASURE_VERITY: 1343 case FS_IOC_READ_VERITY_METADATA: 1344 case EXT4_IOC_CLEAR_ES_CACHE: 1345 case EXT4_IOC_GETSTATE: 1346 case EXT4_IOC_GET_ES_CACHE: 1347 case EXT4_IOC_CHECKPOINT: 1348 break; 1349 default: 1350 return -ENOIOCTLCMD; 1351 } 1352 return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); 1353 } 1354 #endif 1355