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 /* copied from fs/ioctl.c */ 737 static int fiemap_check_ranges(struct super_block *sb, 738 u64 start, u64 len, u64 *new_len) 739 { 740 u64 maxbytes = (u64) sb->s_maxbytes; 741 742 *new_len = len; 743 744 if (len == 0) 745 return -EINVAL; 746 747 if (start > maxbytes) 748 return -EFBIG; 749 750 /* 751 * Shrink request scope to what the fs can actually handle. 752 */ 753 if (len > maxbytes || (maxbytes - len) < start) 754 *new_len = maxbytes - start; 755 756 return 0; 757 } 758 759 /* So that the fiemap access checks can't overflow on 32 bit machines. */ 760 #define FIEMAP_MAX_EXTENTS (UINT_MAX / sizeof(struct fiemap_extent)) 761 762 static int ext4_ioctl_get_es_cache(struct file *filp, unsigned long arg) 763 { 764 struct fiemap fiemap; 765 struct fiemap __user *ufiemap = (struct fiemap __user *) arg; 766 struct fiemap_extent_info fieinfo = { 0, }; 767 struct inode *inode = file_inode(filp); 768 struct super_block *sb = inode->i_sb; 769 u64 len; 770 int error; 771 772 if (copy_from_user(&fiemap, ufiemap, sizeof(fiemap))) 773 return -EFAULT; 774 775 if (fiemap.fm_extent_count > FIEMAP_MAX_EXTENTS) 776 return -EINVAL; 777 778 error = fiemap_check_ranges(sb, fiemap.fm_start, fiemap.fm_length, 779 &len); 780 if (error) 781 return error; 782 783 fieinfo.fi_flags = fiemap.fm_flags; 784 fieinfo.fi_extents_max = fiemap.fm_extent_count; 785 fieinfo.fi_extents_start = ufiemap->fm_extents; 786 787 if (fiemap.fm_extent_count != 0 && 788 !access_ok(fieinfo.fi_extents_start, 789 fieinfo.fi_extents_max * sizeof(struct fiemap_extent))) 790 return -EFAULT; 791 792 if (fieinfo.fi_flags & FIEMAP_FLAG_SYNC) 793 filemap_write_and_wait(inode->i_mapping); 794 795 error = ext4_get_es_cache(inode, &fieinfo, fiemap.fm_start, len); 796 fiemap.fm_flags = fieinfo.fi_flags; 797 fiemap.fm_mapped_extents = fieinfo.fi_extents_mapped; 798 if (copy_to_user(ufiemap, &fiemap, sizeof(fiemap))) 799 error = -EFAULT; 800 801 return error; 802 } 803 804 long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 805 { 806 struct inode *inode = file_inode(filp); 807 struct super_block *sb = inode->i_sb; 808 struct ext4_inode_info *ei = EXT4_I(inode); 809 unsigned int flags; 810 811 ext4_debug("cmd = %u, arg = %lu\n", cmd, arg); 812 813 switch (cmd) { 814 case FS_IOC_GETFSMAP: 815 return ext4_ioc_getfsmap(sb, (void __user *)arg); 816 case EXT4_IOC_GETFLAGS: 817 flags = ei->i_flags & EXT4_FL_USER_VISIBLE; 818 if (S_ISREG(inode->i_mode)) 819 flags &= ~EXT4_PROJINHERIT_FL; 820 return put_user(flags, (int __user *) arg); 821 case EXT4_IOC_SETFLAGS: { 822 int err; 823 824 if (!inode_owner_or_capable(inode)) 825 return -EACCES; 826 827 if (get_user(flags, (int __user *) arg)) 828 return -EFAULT; 829 830 if (flags & ~EXT4_FL_USER_VISIBLE) 831 return -EOPNOTSUPP; 832 /* 833 * chattr(1) grabs flags via GETFLAGS, modifies the result and 834 * passes that to SETFLAGS. So we cannot easily make SETFLAGS 835 * more restrictive than just silently masking off visible but 836 * not settable flags as we always did. 837 */ 838 flags &= EXT4_FL_USER_MODIFIABLE; 839 if (ext4_mask_flags(inode->i_mode, flags) != flags) 840 return -EOPNOTSUPP; 841 842 err = mnt_want_write_file(filp); 843 if (err) 844 return err; 845 846 inode_lock(inode); 847 err = ext4_ioctl_check_immutable(inode, 848 from_kprojid(&init_user_ns, ei->i_projid), 849 flags); 850 if (!err) 851 err = ext4_ioctl_setflags(inode, flags); 852 inode_unlock(inode); 853 mnt_drop_write_file(filp); 854 return err; 855 } 856 case EXT4_IOC_GETVERSION: 857 case EXT4_IOC_GETVERSION_OLD: 858 return put_user(inode->i_generation, (int __user *) arg); 859 case EXT4_IOC_SETVERSION: 860 case EXT4_IOC_SETVERSION_OLD: { 861 handle_t *handle; 862 struct ext4_iloc iloc; 863 __u32 generation; 864 int err; 865 866 if (!inode_owner_or_capable(inode)) 867 return -EPERM; 868 869 if (ext4_has_metadata_csum(inode->i_sb)) { 870 ext4_warning(sb, "Setting inode version is not " 871 "supported with metadata_csum enabled."); 872 return -ENOTTY; 873 } 874 875 err = mnt_want_write_file(filp); 876 if (err) 877 return err; 878 if (get_user(generation, (int __user *) arg)) { 879 err = -EFAULT; 880 goto setversion_out; 881 } 882 883 inode_lock(inode); 884 handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 885 if (IS_ERR(handle)) { 886 err = PTR_ERR(handle); 887 goto unlock_out; 888 } 889 err = ext4_reserve_inode_write(handle, inode, &iloc); 890 if (err == 0) { 891 inode->i_ctime = current_time(inode); 892 inode->i_generation = generation; 893 err = ext4_mark_iloc_dirty(handle, inode, &iloc); 894 } 895 ext4_journal_stop(handle); 896 897 unlock_out: 898 inode_unlock(inode); 899 setversion_out: 900 mnt_drop_write_file(filp); 901 return err; 902 } 903 case EXT4_IOC_GROUP_EXTEND: { 904 ext4_fsblk_t n_blocks_count; 905 int err, err2=0; 906 907 err = ext4_resize_begin(sb); 908 if (err) 909 return err; 910 911 if (get_user(n_blocks_count, (__u32 __user *)arg)) { 912 err = -EFAULT; 913 goto group_extend_out; 914 } 915 916 if (ext4_has_feature_bigalloc(sb)) { 917 ext4_msg(sb, KERN_ERR, 918 "Online resizing not supported with bigalloc"); 919 err = -EOPNOTSUPP; 920 goto group_extend_out; 921 } 922 923 err = mnt_want_write_file(filp); 924 if (err) 925 goto group_extend_out; 926 927 err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count); 928 if (EXT4_SB(sb)->s_journal) { 929 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 930 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 931 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 932 } 933 if (err == 0) 934 err = err2; 935 mnt_drop_write_file(filp); 936 group_extend_out: 937 ext4_resize_end(sb); 938 return err; 939 } 940 941 case EXT4_IOC_MOVE_EXT: { 942 struct move_extent me; 943 struct fd donor; 944 int err; 945 946 if (!(filp->f_mode & FMODE_READ) || 947 !(filp->f_mode & FMODE_WRITE)) 948 return -EBADF; 949 950 if (copy_from_user(&me, 951 (struct move_extent __user *)arg, sizeof(me))) 952 return -EFAULT; 953 me.moved_len = 0; 954 955 donor = fdget(me.donor_fd); 956 if (!donor.file) 957 return -EBADF; 958 959 if (!(donor.file->f_mode & FMODE_WRITE)) { 960 err = -EBADF; 961 goto mext_out; 962 } 963 964 if (ext4_has_feature_bigalloc(sb)) { 965 ext4_msg(sb, KERN_ERR, 966 "Online defrag not supported with bigalloc"); 967 err = -EOPNOTSUPP; 968 goto mext_out; 969 } else if (IS_DAX(inode)) { 970 ext4_msg(sb, KERN_ERR, 971 "Online defrag not supported with DAX"); 972 err = -EOPNOTSUPP; 973 goto mext_out; 974 } 975 976 err = mnt_want_write_file(filp); 977 if (err) 978 goto mext_out; 979 980 err = ext4_move_extents(filp, donor.file, me.orig_start, 981 me.donor_start, me.len, &me.moved_len); 982 mnt_drop_write_file(filp); 983 984 if (copy_to_user((struct move_extent __user *)arg, 985 &me, sizeof(me))) 986 err = -EFAULT; 987 mext_out: 988 fdput(donor); 989 return err; 990 } 991 992 case EXT4_IOC_GROUP_ADD: { 993 struct ext4_new_group_data input; 994 995 if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg, 996 sizeof(input))) 997 return -EFAULT; 998 999 return ext4_ioctl_group_add(filp, &input); 1000 } 1001 1002 case EXT4_IOC_MIGRATE: 1003 { 1004 int err; 1005 if (!inode_owner_or_capable(inode)) 1006 return -EACCES; 1007 1008 err = mnt_want_write_file(filp); 1009 if (err) 1010 return err; 1011 /* 1012 * inode_mutex prevent write and truncate on the file. 1013 * Read still goes through. We take i_data_sem in 1014 * ext4_ext_swap_inode_data before we switch the 1015 * inode format to prevent read. 1016 */ 1017 inode_lock((inode)); 1018 err = ext4_ext_migrate(inode); 1019 inode_unlock((inode)); 1020 mnt_drop_write_file(filp); 1021 return err; 1022 } 1023 1024 case EXT4_IOC_ALLOC_DA_BLKS: 1025 { 1026 int err; 1027 if (!inode_owner_or_capable(inode)) 1028 return -EACCES; 1029 1030 err = mnt_want_write_file(filp); 1031 if (err) 1032 return err; 1033 err = ext4_alloc_da_blocks(inode); 1034 mnt_drop_write_file(filp); 1035 return err; 1036 } 1037 1038 case EXT4_IOC_SWAP_BOOT: 1039 { 1040 int err; 1041 if (!(filp->f_mode & FMODE_WRITE)) 1042 return -EBADF; 1043 err = mnt_want_write_file(filp); 1044 if (err) 1045 return err; 1046 err = swap_inode_boot_loader(sb, inode); 1047 mnt_drop_write_file(filp); 1048 return err; 1049 } 1050 1051 case EXT4_IOC_RESIZE_FS: { 1052 ext4_fsblk_t n_blocks_count; 1053 int err = 0, err2 = 0; 1054 ext4_group_t o_group = EXT4_SB(sb)->s_groups_count; 1055 1056 if (copy_from_user(&n_blocks_count, (__u64 __user *)arg, 1057 sizeof(__u64))) { 1058 return -EFAULT; 1059 } 1060 1061 err = ext4_resize_begin(sb); 1062 if (err) 1063 return err; 1064 1065 err = mnt_want_write_file(filp); 1066 if (err) 1067 goto resizefs_out; 1068 1069 err = ext4_resize_fs(sb, n_blocks_count); 1070 if (EXT4_SB(sb)->s_journal) { 1071 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 1072 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 1073 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 1074 } 1075 if (err == 0) 1076 err = err2; 1077 mnt_drop_write_file(filp); 1078 if (!err && (o_group < EXT4_SB(sb)->s_groups_count) && 1079 ext4_has_group_desc_csum(sb) && 1080 test_opt(sb, INIT_INODE_TABLE)) 1081 err = ext4_register_li_request(sb, o_group); 1082 1083 resizefs_out: 1084 ext4_resize_end(sb); 1085 return err; 1086 } 1087 1088 case FITRIM: 1089 { 1090 struct request_queue *q = bdev_get_queue(sb->s_bdev); 1091 struct fstrim_range range; 1092 int ret = 0; 1093 1094 if (!capable(CAP_SYS_ADMIN)) 1095 return -EPERM; 1096 1097 if (!blk_queue_discard(q)) 1098 return -EOPNOTSUPP; 1099 1100 /* 1101 * We haven't replayed the journal, so we cannot use our 1102 * block-bitmap-guided storage zapping commands. 1103 */ 1104 if (test_opt(sb, NOLOAD) && ext4_has_feature_journal(sb)) 1105 return -EROFS; 1106 1107 if (copy_from_user(&range, (struct fstrim_range __user *)arg, 1108 sizeof(range))) 1109 return -EFAULT; 1110 1111 range.minlen = max((unsigned int)range.minlen, 1112 q->limits.discard_granularity); 1113 ret = ext4_trim_fs(sb, &range); 1114 if (ret < 0) 1115 return ret; 1116 1117 if (copy_to_user((struct fstrim_range __user *)arg, &range, 1118 sizeof(range))) 1119 return -EFAULT; 1120 1121 return 0; 1122 } 1123 case EXT4_IOC_PRECACHE_EXTENTS: 1124 return ext4_ext_precache(inode); 1125 1126 case EXT4_IOC_SET_ENCRYPTION_POLICY: 1127 if (!ext4_has_feature_encrypt(sb)) 1128 return -EOPNOTSUPP; 1129 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); 1130 1131 case EXT4_IOC_GET_ENCRYPTION_PWSALT: { 1132 #ifdef CONFIG_FS_ENCRYPTION 1133 int err, err2; 1134 struct ext4_sb_info *sbi = EXT4_SB(sb); 1135 handle_t *handle; 1136 1137 if (!ext4_has_feature_encrypt(sb)) 1138 return -EOPNOTSUPP; 1139 if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) { 1140 err = mnt_want_write_file(filp); 1141 if (err) 1142 return err; 1143 handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1); 1144 if (IS_ERR(handle)) { 1145 err = PTR_ERR(handle); 1146 goto pwsalt_err_exit; 1147 } 1148 err = ext4_journal_get_write_access(handle, sbi->s_sbh); 1149 if (err) 1150 goto pwsalt_err_journal; 1151 generate_random_uuid(sbi->s_es->s_encrypt_pw_salt); 1152 err = ext4_handle_dirty_metadata(handle, NULL, 1153 sbi->s_sbh); 1154 pwsalt_err_journal: 1155 err2 = ext4_journal_stop(handle); 1156 if (err2 && !err) 1157 err = err2; 1158 pwsalt_err_exit: 1159 mnt_drop_write_file(filp); 1160 if (err) 1161 return err; 1162 } 1163 if (copy_to_user((void __user *) arg, 1164 sbi->s_es->s_encrypt_pw_salt, 16)) 1165 return -EFAULT; 1166 return 0; 1167 #else 1168 return -EOPNOTSUPP; 1169 #endif 1170 } 1171 case EXT4_IOC_GET_ENCRYPTION_POLICY: 1172 if (!ext4_has_feature_encrypt(sb)) 1173 return -EOPNOTSUPP; 1174 return fscrypt_ioctl_get_policy(filp, (void __user *)arg); 1175 1176 case FS_IOC_GET_ENCRYPTION_POLICY_EX: 1177 if (!ext4_has_feature_encrypt(sb)) 1178 return -EOPNOTSUPP; 1179 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg); 1180 1181 case FS_IOC_ADD_ENCRYPTION_KEY: 1182 if (!ext4_has_feature_encrypt(sb)) 1183 return -EOPNOTSUPP; 1184 return fscrypt_ioctl_add_key(filp, (void __user *)arg); 1185 1186 case FS_IOC_REMOVE_ENCRYPTION_KEY: 1187 if (!ext4_has_feature_encrypt(sb)) 1188 return -EOPNOTSUPP; 1189 return fscrypt_ioctl_remove_key(filp, (void __user *)arg); 1190 1191 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: 1192 if (!ext4_has_feature_encrypt(sb)) 1193 return -EOPNOTSUPP; 1194 return fscrypt_ioctl_remove_key_all_users(filp, 1195 (void __user *)arg); 1196 case FS_IOC_GET_ENCRYPTION_KEY_STATUS: 1197 if (!ext4_has_feature_encrypt(sb)) 1198 return -EOPNOTSUPP; 1199 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg); 1200 1201 case FS_IOC_GET_ENCRYPTION_NONCE: 1202 if (!ext4_has_feature_encrypt(sb)) 1203 return -EOPNOTSUPP; 1204 return fscrypt_ioctl_get_nonce(filp, (void __user *)arg); 1205 1206 case EXT4_IOC_CLEAR_ES_CACHE: 1207 { 1208 if (!inode_owner_or_capable(inode)) 1209 return -EACCES; 1210 ext4_clear_inode_es(inode); 1211 return 0; 1212 } 1213 1214 case EXT4_IOC_GETSTATE: 1215 { 1216 __u32 state = 0; 1217 1218 if (ext4_test_inode_state(inode, EXT4_STATE_EXT_PRECACHED)) 1219 state |= EXT4_STATE_FLAG_EXT_PRECACHED; 1220 if (ext4_test_inode_state(inode, EXT4_STATE_NEW)) 1221 state |= EXT4_STATE_FLAG_NEW; 1222 if (ext4_test_inode_state(inode, EXT4_STATE_NEWENTRY)) 1223 state |= EXT4_STATE_FLAG_NEWENTRY; 1224 if (ext4_test_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE)) 1225 state |= EXT4_STATE_FLAG_DA_ALLOC_CLOSE; 1226 1227 return put_user(state, (__u32 __user *) arg); 1228 } 1229 1230 case EXT4_IOC_GET_ES_CACHE: 1231 return ext4_ioctl_get_es_cache(filp, arg); 1232 1233 case EXT4_IOC_FSGETXATTR: 1234 { 1235 struct fsxattr fa; 1236 1237 ext4_fill_fsxattr(inode, &fa); 1238 1239 if (copy_to_user((struct fsxattr __user *)arg, 1240 &fa, sizeof(fa))) 1241 return -EFAULT; 1242 return 0; 1243 } 1244 case EXT4_IOC_FSSETXATTR: 1245 { 1246 struct fsxattr fa, old_fa; 1247 int err; 1248 1249 if (copy_from_user(&fa, (struct fsxattr __user *)arg, 1250 sizeof(fa))) 1251 return -EFAULT; 1252 1253 /* Make sure caller has proper permission */ 1254 if (!inode_owner_or_capable(inode)) 1255 return -EACCES; 1256 1257 if (fa.fsx_xflags & ~EXT4_SUPPORTED_FS_XFLAGS) 1258 return -EOPNOTSUPP; 1259 1260 flags = ext4_xflags_to_iflags(fa.fsx_xflags); 1261 if (ext4_mask_flags(inode->i_mode, flags) != flags) 1262 return -EOPNOTSUPP; 1263 1264 err = mnt_want_write_file(filp); 1265 if (err) 1266 return err; 1267 1268 inode_lock(inode); 1269 ext4_fill_fsxattr(inode, &old_fa); 1270 err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa); 1271 if (err) 1272 goto out; 1273 flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) | 1274 (flags & EXT4_FL_XFLAG_VISIBLE); 1275 err = ext4_ioctl_check_immutable(inode, fa.fsx_projid, flags); 1276 if (err) 1277 goto out; 1278 err = ext4_ioctl_setflags(inode, flags); 1279 if (err) 1280 goto out; 1281 err = ext4_ioctl_setproject(filp, fa.fsx_projid); 1282 out: 1283 inode_unlock(inode); 1284 mnt_drop_write_file(filp); 1285 return err; 1286 } 1287 case EXT4_IOC_SHUTDOWN: 1288 return ext4_shutdown(sb, arg); 1289 1290 case FS_IOC_ENABLE_VERITY: 1291 if (!ext4_has_feature_verity(sb)) 1292 return -EOPNOTSUPP; 1293 return fsverity_ioctl_enable(filp, (const void __user *)arg); 1294 1295 case FS_IOC_MEASURE_VERITY: 1296 if (!ext4_has_feature_verity(sb)) 1297 return -EOPNOTSUPP; 1298 return fsverity_ioctl_measure(filp, (void __user *)arg); 1299 1300 default: 1301 return -ENOTTY; 1302 } 1303 } 1304 1305 #ifdef CONFIG_COMPAT 1306 long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 1307 { 1308 /* These are just misnamed, they actually get/put from/to user an int */ 1309 switch (cmd) { 1310 case EXT4_IOC32_GETFLAGS: 1311 cmd = EXT4_IOC_GETFLAGS; 1312 break; 1313 case EXT4_IOC32_SETFLAGS: 1314 cmd = EXT4_IOC_SETFLAGS; 1315 break; 1316 case EXT4_IOC32_GETVERSION: 1317 cmd = EXT4_IOC_GETVERSION; 1318 break; 1319 case EXT4_IOC32_SETVERSION: 1320 cmd = EXT4_IOC_SETVERSION; 1321 break; 1322 case EXT4_IOC32_GROUP_EXTEND: 1323 cmd = EXT4_IOC_GROUP_EXTEND; 1324 break; 1325 case EXT4_IOC32_GETVERSION_OLD: 1326 cmd = EXT4_IOC_GETVERSION_OLD; 1327 break; 1328 case EXT4_IOC32_SETVERSION_OLD: 1329 cmd = EXT4_IOC_SETVERSION_OLD; 1330 break; 1331 case EXT4_IOC32_GETRSVSZ: 1332 cmd = EXT4_IOC_GETRSVSZ; 1333 break; 1334 case EXT4_IOC32_SETRSVSZ: 1335 cmd = EXT4_IOC_SETRSVSZ; 1336 break; 1337 case EXT4_IOC32_GROUP_ADD: { 1338 struct compat_ext4_new_group_input __user *uinput; 1339 struct ext4_new_group_data input; 1340 int err; 1341 1342 uinput = compat_ptr(arg); 1343 err = get_user(input.group, &uinput->group); 1344 err |= get_user(input.block_bitmap, &uinput->block_bitmap); 1345 err |= get_user(input.inode_bitmap, &uinput->inode_bitmap); 1346 err |= get_user(input.inode_table, &uinput->inode_table); 1347 err |= get_user(input.blocks_count, &uinput->blocks_count); 1348 err |= get_user(input.reserved_blocks, 1349 &uinput->reserved_blocks); 1350 if (err) 1351 return -EFAULT; 1352 return ext4_ioctl_group_add(file, &input); 1353 } 1354 case EXT4_IOC_MOVE_EXT: 1355 case EXT4_IOC_RESIZE_FS: 1356 case FITRIM: 1357 case EXT4_IOC_PRECACHE_EXTENTS: 1358 case EXT4_IOC_SET_ENCRYPTION_POLICY: 1359 case EXT4_IOC_GET_ENCRYPTION_PWSALT: 1360 case EXT4_IOC_GET_ENCRYPTION_POLICY: 1361 case FS_IOC_GET_ENCRYPTION_POLICY_EX: 1362 case FS_IOC_ADD_ENCRYPTION_KEY: 1363 case FS_IOC_REMOVE_ENCRYPTION_KEY: 1364 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: 1365 case FS_IOC_GET_ENCRYPTION_KEY_STATUS: 1366 case FS_IOC_GET_ENCRYPTION_NONCE: 1367 case EXT4_IOC_SHUTDOWN: 1368 case FS_IOC_GETFSMAP: 1369 case FS_IOC_ENABLE_VERITY: 1370 case FS_IOC_MEASURE_VERITY: 1371 case EXT4_IOC_CLEAR_ES_CACHE: 1372 case EXT4_IOC_GETSTATE: 1373 case EXT4_IOC_GET_ES_CACHE: 1374 case EXT4_IOC_FSGETXATTR: 1375 case EXT4_IOC_FSSETXATTR: 1376 break; 1377 default: 1378 return -ENOIOCTLCMD; 1379 } 1380 return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); 1381 } 1382 #endif 1383