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 if (fiemap.fm_extent_count != 0 && 758 !access_ok(fieinfo.fi_extents_start, 759 fieinfo.fi_extents_max * sizeof(struct fiemap_extent))) 760 return -EFAULT; 761 762 if (fieinfo.fi_flags & FIEMAP_FLAG_SYNC) 763 filemap_write_and_wait(inode->i_mapping); 764 765 error = ext4_get_es_cache(inode, &fieinfo, fiemap.fm_start, 766 fiemap.fm_length); 767 fiemap.fm_flags = fieinfo.fi_flags; 768 fiemap.fm_mapped_extents = fieinfo.fi_extents_mapped; 769 if (copy_to_user(ufiemap, &fiemap, sizeof(fiemap))) 770 error = -EFAULT; 771 772 return error; 773 } 774 775 long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 776 { 777 struct inode *inode = file_inode(filp); 778 struct super_block *sb = inode->i_sb; 779 struct ext4_inode_info *ei = EXT4_I(inode); 780 unsigned int flags; 781 782 ext4_debug("cmd = %u, arg = %lu\n", cmd, arg); 783 784 switch (cmd) { 785 case FS_IOC_GETFSMAP: 786 return ext4_ioc_getfsmap(sb, (void __user *)arg); 787 case EXT4_IOC_GETFLAGS: 788 flags = ei->i_flags & EXT4_FL_USER_VISIBLE; 789 if (S_ISREG(inode->i_mode)) 790 flags &= ~EXT4_PROJINHERIT_FL; 791 return put_user(flags, (int __user *) arg); 792 case EXT4_IOC_SETFLAGS: { 793 int err; 794 795 if (!inode_owner_or_capable(inode)) 796 return -EACCES; 797 798 if (get_user(flags, (int __user *) arg)) 799 return -EFAULT; 800 801 if (flags & ~EXT4_FL_USER_VISIBLE) 802 return -EOPNOTSUPP; 803 /* 804 * chattr(1) grabs flags via GETFLAGS, modifies the result and 805 * passes that to SETFLAGS. So we cannot easily make SETFLAGS 806 * more restrictive than just silently masking off visible but 807 * not settable flags as we always did. 808 */ 809 flags &= EXT4_FL_USER_MODIFIABLE; 810 if (ext4_mask_flags(inode->i_mode, flags) != flags) 811 return -EOPNOTSUPP; 812 813 err = mnt_want_write_file(filp); 814 if (err) 815 return err; 816 817 inode_lock(inode); 818 err = ext4_ioctl_check_immutable(inode, 819 from_kprojid(&init_user_ns, ei->i_projid), 820 flags); 821 if (!err) 822 err = ext4_ioctl_setflags(inode, flags); 823 inode_unlock(inode); 824 mnt_drop_write_file(filp); 825 return err; 826 } 827 case EXT4_IOC_GETVERSION: 828 case EXT4_IOC_GETVERSION_OLD: 829 return put_user(inode->i_generation, (int __user *) arg); 830 case EXT4_IOC_SETVERSION: 831 case EXT4_IOC_SETVERSION_OLD: { 832 handle_t *handle; 833 struct ext4_iloc iloc; 834 __u32 generation; 835 int err; 836 837 if (!inode_owner_or_capable(inode)) 838 return -EPERM; 839 840 if (ext4_has_metadata_csum(inode->i_sb)) { 841 ext4_warning(sb, "Setting inode version is not " 842 "supported with metadata_csum enabled."); 843 return -ENOTTY; 844 } 845 846 err = mnt_want_write_file(filp); 847 if (err) 848 return err; 849 if (get_user(generation, (int __user *) arg)) { 850 err = -EFAULT; 851 goto setversion_out; 852 } 853 854 inode_lock(inode); 855 handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 856 if (IS_ERR(handle)) { 857 err = PTR_ERR(handle); 858 goto unlock_out; 859 } 860 err = ext4_reserve_inode_write(handle, inode, &iloc); 861 if (err == 0) { 862 inode->i_ctime = current_time(inode); 863 inode->i_generation = generation; 864 err = ext4_mark_iloc_dirty(handle, inode, &iloc); 865 } 866 ext4_journal_stop(handle); 867 868 unlock_out: 869 inode_unlock(inode); 870 setversion_out: 871 mnt_drop_write_file(filp); 872 return err; 873 } 874 case EXT4_IOC_GROUP_EXTEND: { 875 ext4_fsblk_t n_blocks_count; 876 int err, err2=0; 877 878 err = ext4_resize_begin(sb); 879 if (err) 880 return err; 881 882 if (get_user(n_blocks_count, (__u32 __user *)arg)) { 883 err = -EFAULT; 884 goto group_extend_out; 885 } 886 887 if (ext4_has_feature_bigalloc(sb)) { 888 ext4_msg(sb, KERN_ERR, 889 "Online resizing not supported with bigalloc"); 890 err = -EOPNOTSUPP; 891 goto group_extend_out; 892 } 893 894 err = mnt_want_write_file(filp); 895 if (err) 896 goto group_extend_out; 897 898 err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count); 899 if (EXT4_SB(sb)->s_journal) { 900 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 901 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 902 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 903 } 904 if (err == 0) 905 err = err2; 906 mnt_drop_write_file(filp); 907 group_extend_out: 908 ext4_resize_end(sb); 909 return err; 910 } 911 912 case EXT4_IOC_MOVE_EXT: { 913 struct move_extent me; 914 struct fd donor; 915 int err; 916 917 if (!(filp->f_mode & FMODE_READ) || 918 !(filp->f_mode & FMODE_WRITE)) 919 return -EBADF; 920 921 if (copy_from_user(&me, 922 (struct move_extent __user *)arg, sizeof(me))) 923 return -EFAULT; 924 me.moved_len = 0; 925 926 donor = fdget(me.donor_fd); 927 if (!donor.file) 928 return -EBADF; 929 930 if (!(donor.file->f_mode & FMODE_WRITE)) { 931 err = -EBADF; 932 goto mext_out; 933 } 934 935 if (ext4_has_feature_bigalloc(sb)) { 936 ext4_msg(sb, KERN_ERR, 937 "Online defrag not supported with bigalloc"); 938 err = -EOPNOTSUPP; 939 goto mext_out; 940 } else if (IS_DAX(inode)) { 941 ext4_msg(sb, KERN_ERR, 942 "Online defrag not supported with DAX"); 943 err = -EOPNOTSUPP; 944 goto mext_out; 945 } 946 947 err = mnt_want_write_file(filp); 948 if (err) 949 goto mext_out; 950 951 err = ext4_move_extents(filp, donor.file, me.orig_start, 952 me.donor_start, me.len, &me.moved_len); 953 mnt_drop_write_file(filp); 954 955 if (copy_to_user((struct move_extent __user *)arg, 956 &me, sizeof(me))) 957 err = -EFAULT; 958 mext_out: 959 fdput(donor); 960 return err; 961 } 962 963 case EXT4_IOC_GROUP_ADD: { 964 struct ext4_new_group_data input; 965 966 if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg, 967 sizeof(input))) 968 return -EFAULT; 969 970 return ext4_ioctl_group_add(filp, &input); 971 } 972 973 case EXT4_IOC_MIGRATE: 974 { 975 int err; 976 if (!inode_owner_or_capable(inode)) 977 return -EACCES; 978 979 err = mnt_want_write_file(filp); 980 if (err) 981 return err; 982 /* 983 * inode_mutex prevent write and truncate on the file. 984 * Read still goes through. We take i_data_sem in 985 * ext4_ext_swap_inode_data before we switch the 986 * inode format to prevent read. 987 */ 988 inode_lock((inode)); 989 err = ext4_ext_migrate(inode); 990 inode_unlock((inode)); 991 mnt_drop_write_file(filp); 992 return err; 993 } 994 995 case EXT4_IOC_ALLOC_DA_BLKS: 996 { 997 int err; 998 if (!inode_owner_or_capable(inode)) 999 return -EACCES; 1000 1001 err = mnt_want_write_file(filp); 1002 if (err) 1003 return err; 1004 err = ext4_alloc_da_blocks(inode); 1005 mnt_drop_write_file(filp); 1006 return err; 1007 } 1008 1009 case EXT4_IOC_SWAP_BOOT: 1010 { 1011 int err; 1012 if (!(filp->f_mode & FMODE_WRITE)) 1013 return -EBADF; 1014 err = mnt_want_write_file(filp); 1015 if (err) 1016 return err; 1017 err = swap_inode_boot_loader(sb, inode); 1018 mnt_drop_write_file(filp); 1019 return err; 1020 } 1021 1022 case EXT4_IOC_RESIZE_FS: { 1023 ext4_fsblk_t n_blocks_count; 1024 int err = 0, err2 = 0; 1025 ext4_group_t o_group = EXT4_SB(sb)->s_groups_count; 1026 1027 if (copy_from_user(&n_blocks_count, (__u64 __user *)arg, 1028 sizeof(__u64))) { 1029 return -EFAULT; 1030 } 1031 1032 err = ext4_resize_begin(sb); 1033 if (err) 1034 return err; 1035 1036 err = mnt_want_write_file(filp); 1037 if (err) 1038 goto resizefs_out; 1039 1040 err = ext4_resize_fs(sb, n_blocks_count); 1041 if (EXT4_SB(sb)->s_journal) { 1042 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 1043 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 1044 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 1045 } 1046 if (err == 0) 1047 err = err2; 1048 mnt_drop_write_file(filp); 1049 if (!err && (o_group < EXT4_SB(sb)->s_groups_count) && 1050 ext4_has_group_desc_csum(sb) && 1051 test_opt(sb, INIT_INODE_TABLE)) 1052 err = ext4_register_li_request(sb, o_group); 1053 1054 resizefs_out: 1055 ext4_resize_end(sb); 1056 return err; 1057 } 1058 1059 case FITRIM: 1060 { 1061 struct request_queue *q = bdev_get_queue(sb->s_bdev); 1062 struct fstrim_range range; 1063 int ret = 0; 1064 1065 if (!capable(CAP_SYS_ADMIN)) 1066 return -EPERM; 1067 1068 if (!blk_queue_discard(q)) 1069 return -EOPNOTSUPP; 1070 1071 /* 1072 * We haven't replayed the journal, so we cannot use our 1073 * block-bitmap-guided storage zapping commands. 1074 */ 1075 if (test_opt(sb, NOLOAD) && ext4_has_feature_journal(sb)) 1076 return -EROFS; 1077 1078 if (copy_from_user(&range, (struct fstrim_range __user *)arg, 1079 sizeof(range))) 1080 return -EFAULT; 1081 1082 range.minlen = max((unsigned int)range.minlen, 1083 q->limits.discard_granularity); 1084 ret = ext4_trim_fs(sb, &range); 1085 if (ret < 0) 1086 return ret; 1087 1088 if (copy_to_user((struct fstrim_range __user *)arg, &range, 1089 sizeof(range))) 1090 return -EFAULT; 1091 1092 return 0; 1093 } 1094 case EXT4_IOC_PRECACHE_EXTENTS: 1095 return ext4_ext_precache(inode); 1096 1097 case EXT4_IOC_SET_ENCRYPTION_POLICY: 1098 if (!ext4_has_feature_encrypt(sb)) 1099 return -EOPNOTSUPP; 1100 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); 1101 1102 case EXT4_IOC_GET_ENCRYPTION_PWSALT: { 1103 #ifdef CONFIG_FS_ENCRYPTION 1104 int err, err2; 1105 struct ext4_sb_info *sbi = EXT4_SB(sb); 1106 handle_t *handle; 1107 1108 if (!ext4_has_feature_encrypt(sb)) 1109 return -EOPNOTSUPP; 1110 if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) { 1111 err = mnt_want_write_file(filp); 1112 if (err) 1113 return err; 1114 handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1); 1115 if (IS_ERR(handle)) { 1116 err = PTR_ERR(handle); 1117 goto pwsalt_err_exit; 1118 } 1119 err = ext4_journal_get_write_access(handle, sbi->s_sbh); 1120 if (err) 1121 goto pwsalt_err_journal; 1122 generate_random_uuid(sbi->s_es->s_encrypt_pw_salt); 1123 err = ext4_handle_dirty_metadata(handle, NULL, 1124 sbi->s_sbh); 1125 pwsalt_err_journal: 1126 err2 = ext4_journal_stop(handle); 1127 if (err2 && !err) 1128 err = err2; 1129 pwsalt_err_exit: 1130 mnt_drop_write_file(filp); 1131 if (err) 1132 return err; 1133 } 1134 if (copy_to_user((void __user *) arg, 1135 sbi->s_es->s_encrypt_pw_salt, 16)) 1136 return -EFAULT; 1137 return 0; 1138 #else 1139 return -EOPNOTSUPP; 1140 #endif 1141 } 1142 case EXT4_IOC_GET_ENCRYPTION_POLICY: 1143 if (!ext4_has_feature_encrypt(sb)) 1144 return -EOPNOTSUPP; 1145 return fscrypt_ioctl_get_policy(filp, (void __user *)arg); 1146 1147 case FS_IOC_GET_ENCRYPTION_POLICY_EX: 1148 if (!ext4_has_feature_encrypt(sb)) 1149 return -EOPNOTSUPP; 1150 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg); 1151 1152 case FS_IOC_ADD_ENCRYPTION_KEY: 1153 if (!ext4_has_feature_encrypt(sb)) 1154 return -EOPNOTSUPP; 1155 return fscrypt_ioctl_add_key(filp, (void __user *)arg); 1156 1157 case FS_IOC_REMOVE_ENCRYPTION_KEY: 1158 if (!ext4_has_feature_encrypt(sb)) 1159 return -EOPNOTSUPP; 1160 return fscrypt_ioctl_remove_key(filp, (void __user *)arg); 1161 1162 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: 1163 if (!ext4_has_feature_encrypt(sb)) 1164 return -EOPNOTSUPP; 1165 return fscrypt_ioctl_remove_key_all_users(filp, 1166 (void __user *)arg); 1167 case FS_IOC_GET_ENCRYPTION_KEY_STATUS: 1168 if (!ext4_has_feature_encrypt(sb)) 1169 return -EOPNOTSUPP; 1170 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg); 1171 1172 case FS_IOC_GET_ENCRYPTION_NONCE: 1173 if (!ext4_has_feature_encrypt(sb)) 1174 return -EOPNOTSUPP; 1175 return fscrypt_ioctl_get_nonce(filp, (void __user *)arg); 1176 1177 case EXT4_IOC_CLEAR_ES_CACHE: 1178 { 1179 if (!inode_owner_or_capable(inode)) 1180 return -EACCES; 1181 ext4_clear_inode_es(inode); 1182 return 0; 1183 } 1184 1185 case EXT4_IOC_GETSTATE: 1186 { 1187 __u32 state = 0; 1188 1189 if (ext4_test_inode_state(inode, EXT4_STATE_EXT_PRECACHED)) 1190 state |= EXT4_STATE_FLAG_EXT_PRECACHED; 1191 if (ext4_test_inode_state(inode, EXT4_STATE_NEW)) 1192 state |= EXT4_STATE_FLAG_NEW; 1193 if (ext4_test_inode_state(inode, EXT4_STATE_NEWENTRY)) 1194 state |= EXT4_STATE_FLAG_NEWENTRY; 1195 if (ext4_test_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE)) 1196 state |= EXT4_STATE_FLAG_DA_ALLOC_CLOSE; 1197 1198 return put_user(state, (__u32 __user *) arg); 1199 } 1200 1201 case EXT4_IOC_GET_ES_CACHE: 1202 return ext4_ioctl_get_es_cache(filp, arg); 1203 1204 case EXT4_IOC_FSGETXATTR: 1205 { 1206 struct fsxattr fa; 1207 1208 ext4_fill_fsxattr(inode, &fa); 1209 1210 if (copy_to_user((struct fsxattr __user *)arg, 1211 &fa, sizeof(fa))) 1212 return -EFAULT; 1213 return 0; 1214 } 1215 case EXT4_IOC_FSSETXATTR: 1216 { 1217 struct fsxattr fa, old_fa; 1218 int err; 1219 1220 if (copy_from_user(&fa, (struct fsxattr __user *)arg, 1221 sizeof(fa))) 1222 return -EFAULT; 1223 1224 /* Make sure caller has proper permission */ 1225 if (!inode_owner_or_capable(inode)) 1226 return -EACCES; 1227 1228 if (fa.fsx_xflags & ~EXT4_SUPPORTED_FS_XFLAGS) 1229 return -EOPNOTSUPP; 1230 1231 flags = ext4_xflags_to_iflags(fa.fsx_xflags); 1232 if (ext4_mask_flags(inode->i_mode, flags) != flags) 1233 return -EOPNOTSUPP; 1234 1235 err = mnt_want_write_file(filp); 1236 if (err) 1237 return err; 1238 1239 inode_lock(inode); 1240 ext4_fill_fsxattr(inode, &old_fa); 1241 err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa); 1242 if (err) 1243 goto out; 1244 flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) | 1245 (flags & EXT4_FL_XFLAG_VISIBLE); 1246 err = ext4_ioctl_check_immutable(inode, fa.fsx_projid, flags); 1247 if (err) 1248 goto out; 1249 err = ext4_ioctl_setflags(inode, flags); 1250 if (err) 1251 goto out; 1252 err = ext4_ioctl_setproject(filp, fa.fsx_projid); 1253 out: 1254 inode_unlock(inode); 1255 mnt_drop_write_file(filp); 1256 return err; 1257 } 1258 case EXT4_IOC_SHUTDOWN: 1259 return ext4_shutdown(sb, arg); 1260 1261 case FS_IOC_ENABLE_VERITY: 1262 if (!ext4_has_feature_verity(sb)) 1263 return -EOPNOTSUPP; 1264 return fsverity_ioctl_enable(filp, (const void __user *)arg); 1265 1266 case FS_IOC_MEASURE_VERITY: 1267 if (!ext4_has_feature_verity(sb)) 1268 return -EOPNOTSUPP; 1269 return fsverity_ioctl_measure(filp, (void __user *)arg); 1270 1271 default: 1272 return -ENOTTY; 1273 } 1274 } 1275 1276 #ifdef CONFIG_COMPAT 1277 long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 1278 { 1279 /* These are just misnamed, they actually get/put from/to user an int */ 1280 switch (cmd) { 1281 case EXT4_IOC32_GETFLAGS: 1282 cmd = EXT4_IOC_GETFLAGS; 1283 break; 1284 case EXT4_IOC32_SETFLAGS: 1285 cmd = EXT4_IOC_SETFLAGS; 1286 break; 1287 case EXT4_IOC32_GETVERSION: 1288 cmd = EXT4_IOC_GETVERSION; 1289 break; 1290 case EXT4_IOC32_SETVERSION: 1291 cmd = EXT4_IOC_SETVERSION; 1292 break; 1293 case EXT4_IOC32_GROUP_EXTEND: 1294 cmd = EXT4_IOC_GROUP_EXTEND; 1295 break; 1296 case EXT4_IOC32_GETVERSION_OLD: 1297 cmd = EXT4_IOC_GETVERSION_OLD; 1298 break; 1299 case EXT4_IOC32_SETVERSION_OLD: 1300 cmd = EXT4_IOC_SETVERSION_OLD; 1301 break; 1302 case EXT4_IOC32_GETRSVSZ: 1303 cmd = EXT4_IOC_GETRSVSZ; 1304 break; 1305 case EXT4_IOC32_SETRSVSZ: 1306 cmd = EXT4_IOC_SETRSVSZ; 1307 break; 1308 case EXT4_IOC32_GROUP_ADD: { 1309 struct compat_ext4_new_group_input __user *uinput; 1310 struct ext4_new_group_data input; 1311 int err; 1312 1313 uinput = compat_ptr(arg); 1314 err = get_user(input.group, &uinput->group); 1315 err |= get_user(input.block_bitmap, &uinput->block_bitmap); 1316 err |= get_user(input.inode_bitmap, &uinput->inode_bitmap); 1317 err |= get_user(input.inode_table, &uinput->inode_table); 1318 err |= get_user(input.blocks_count, &uinput->blocks_count); 1319 err |= get_user(input.reserved_blocks, 1320 &uinput->reserved_blocks); 1321 if (err) 1322 return -EFAULT; 1323 return ext4_ioctl_group_add(file, &input); 1324 } 1325 case EXT4_IOC_MOVE_EXT: 1326 case EXT4_IOC_RESIZE_FS: 1327 case FITRIM: 1328 case EXT4_IOC_PRECACHE_EXTENTS: 1329 case EXT4_IOC_SET_ENCRYPTION_POLICY: 1330 case EXT4_IOC_GET_ENCRYPTION_PWSALT: 1331 case EXT4_IOC_GET_ENCRYPTION_POLICY: 1332 case FS_IOC_GET_ENCRYPTION_POLICY_EX: 1333 case FS_IOC_ADD_ENCRYPTION_KEY: 1334 case FS_IOC_REMOVE_ENCRYPTION_KEY: 1335 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: 1336 case FS_IOC_GET_ENCRYPTION_KEY_STATUS: 1337 case FS_IOC_GET_ENCRYPTION_NONCE: 1338 case EXT4_IOC_SHUTDOWN: 1339 case FS_IOC_GETFSMAP: 1340 case FS_IOC_ENABLE_VERITY: 1341 case FS_IOC_MEASURE_VERITY: 1342 case EXT4_IOC_CLEAR_ES_CACHE: 1343 case EXT4_IOC_GETSTATE: 1344 case EXT4_IOC_GET_ES_CACHE: 1345 case EXT4_IOC_FSGETXATTR: 1346 case EXT4_IOC_FSSETXATTR: 1347 break; 1348 default: 1349 return -ENOIOCTLCMD; 1350 } 1351 return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); 1352 } 1353 #endif 1354