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, false); 385 386 inode->i_ctime = current_time(inode); 387 388 err = ext4_mark_iloc_dirty(handle, inode, &iloc); 389 flags_err: 390 ext4_journal_stop(handle); 391 if (err) 392 goto flags_out; 393 394 if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) { 395 /* 396 * Changes to the journaling mode can cause unsafe changes to 397 * S_DAX if the inode is DAX 398 */ 399 if (IS_DAX(inode)) { 400 err = -EBUSY; 401 goto flags_out; 402 } 403 404 err = ext4_change_inode_journal_flag(inode, jflag); 405 if (err) 406 goto flags_out; 407 } 408 if (migrate) { 409 if (flags & EXT4_EXTENTS_FL) 410 err = ext4_ext_migrate(inode); 411 else 412 err = ext4_ind_migrate(inode); 413 } 414 415 flags_out: 416 return err; 417 } 418 419 #ifdef CONFIG_QUOTA 420 static int ext4_ioctl_setproject(struct file *filp, __u32 projid) 421 { 422 struct inode *inode = file_inode(filp); 423 struct super_block *sb = inode->i_sb; 424 struct ext4_inode_info *ei = EXT4_I(inode); 425 int err, rc; 426 handle_t *handle; 427 kprojid_t kprojid; 428 struct ext4_iloc iloc; 429 struct ext4_inode *raw_inode; 430 struct dquot *transfer_to[MAXQUOTAS] = { }; 431 432 if (!ext4_has_feature_project(sb)) { 433 if (projid != EXT4_DEF_PROJID) 434 return -EOPNOTSUPP; 435 else 436 return 0; 437 } 438 439 if (EXT4_INODE_SIZE(sb) <= EXT4_GOOD_OLD_INODE_SIZE) 440 return -EOPNOTSUPP; 441 442 kprojid = make_kprojid(&init_user_ns, (projid_t)projid); 443 444 if (projid_eq(kprojid, EXT4_I(inode)->i_projid)) 445 return 0; 446 447 err = -EPERM; 448 /* Is it quota file? Do not allow user to mess with it */ 449 if (ext4_is_quota_file(inode)) 450 return err; 451 452 err = ext4_get_inode_loc(inode, &iloc); 453 if (err) 454 return err; 455 456 raw_inode = ext4_raw_inode(&iloc); 457 if (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)) { 458 err = ext4_expand_extra_isize(inode, 459 EXT4_SB(sb)->s_want_extra_isize, 460 &iloc); 461 if (err) 462 return err; 463 } else { 464 brelse(iloc.bh); 465 } 466 467 err = dquot_initialize(inode); 468 if (err) 469 return err; 470 471 handle = ext4_journal_start(inode, EXT4_HT_QUOTA, 472 EXT4_QUOTA_INIT_BLOCKS(sb) + 473 EXT4_QUOTA_DEL_BLOCKS(sb) + 3); 474 if (IS_ERR(handle)) 475 return PTR_ERR(handle); 476 477 err = ext4_reserve_inode_write(handle, inode, &iloc); 478 if (err) 479 goto out_stop; 480 481 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); 482 if (!IS_ERR(transfer_to[PRJQUOTA])) { 483 484 /* __dquot_transfer() calls back ext4_get_inode_usage() which 485 * counts xattr inode references. 486 */ 487 down_read(&EXT4_I(inode)->xattr_sem); 488 err = __dquot_transfer(inode, transfer_to); 489 up_read(&EXT4_I(inode)->xattr_sem); 490 dqput(transfer_to[PRJQUOTA]); 491 if (err) 492 goto out_dirty; 493 } 494 495 EXT4_I(inode)->i_projid = kprojid; 496 inode->i_ctime = current_time(inode); 497 out_dirty: 498 rc = ext4_mark_iloc_dirty(handle, inode, &iloc); 499 if (!err) 500 err = rc; 501 out_stop: 502 ext4_journal_stop(handle); 503 return err; 504 } 505 #else 506 static int ext4_ioctl_setproject(struct file *filp, __u32 projid) 507 { 508 if (projid != EXT4_DEF_PROJID) 509 return -EOPNOTSUPP; 510 return 0; 511 } 512 #endif 513 514 /* Transfer internal flags to xflags */ 515 static inline __u32 ext4_iflags_to_xflags(unsigned long iflags) 516 { 517 __u32 xflags = 0; 518 519 if (iflags & EXT4_SYNC_FL) 520 xflags |= FS_XFLAG_SYNC; 521 if (iflags & EXT4_IMMUTABLE_FL) 522 xflags |= FS_XFLAG_IMMUTABLE; 523 if (iflags & EXT4_APPEND_FL) 524 xflags |= FS_XFLAG_APPEND; 525 if (iflags & EXT4_NODUMP_FL) 526 xflags |= FS_XFLAG_NODUMP; 527 if (iflags & EXT4_NOATIME_FL) 528 xflags |= FS_XFLAG_NOATIME; 529 if (iflags & EXT4_PROJINHERIT_FL) 530 xflags |= FS_XFLAG_PROJINHERIT; 531 return xflags; 532 } 533 534 #define EXT4_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \ 535 FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \ 536 FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT) 537 538 /* Transfer xflags flags to internal */ 539 static inline unsigned long ext4_xflags_to_iflags(__u32 xflags) 540 { 541 unsigned long iflags = 0; 542 543 if (xflags & FS_XFLAG_SYNC) 544 iflags |= EXT4_SYNC_FL; 545 if (xflags & FS_XFLAG_IMMUTABLE) 546 iflags |= EXT4_IMMUTABLE_FL; 547 if (xflags & FS_XFLAG_APPEND) 548 iflags |= EXT4_APPEND_FL; 549 if (xflags & FS_XFLAG_NODUMP) 550 iflags |= EXT4_NODUMP_FL; 551 if (xflags & FS_XFLAG_NOATIME) 552 iflags |= EXT4_NOATIME_FL; 553 if (xflags & FS_XFLAG_PROJINHERIT) 554 iflags |= EXT4_PROJINHERIT_FL; 555 556 return iflags; 557 } 558 559 static int ext4_shutdown(struct super_block *sb, unsigned long arg) 560 { 561 struct ext4_sb_info *sbi = EXT4_SB(sb); 562 __u32 flags; 563 564 if (!capable(CAP_SYS_ADMIN)) 565 return -EPERM; 566 567 if (get_user(flags, (__u32 __user *)arg)) 568 return -EFAULT; 569 570 if (flags > EXT4_GOING_FLAGS_NOLOGFLUSH) 571 return -EINVAL; 572 573 if (ext4_forced_shutdown(sbi)) 574 return 0; 575 576 ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags); 577 trace_ext4_shutdown(sb, flags); 578 579 switch (flags) { 580 case EXT4_GOING_FLAGS_DEFAULT: 581 freeze_bdev(sb->s_bdev); 582 set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 583 thaw_bdev(sb->s_bdev, sb); 584 break; 585 case EXT4_GOING_FLAGS_LOGFLUSH: 586 set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 587 if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) { 588 (void) ext4_force_commit(sb); 589 jbd2_journal_abort(sbi->s_journal, -ESHUTDOWN); 590 } 591 break; 592 case EXT4_GOING_FLAGS_NOLOGFLUSH: 593 set_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); 594 if (sbi->s_journal && !is_journal_aborted(sbi->s_journal)) 595 jbd2_journal_abort(sbi->s_journal, -ESHUTDOWN); 596 break; 597 default: 598 return -EINVAL; 599 } 600 clear_opt(sb, DISCARD); 601 return 0; 602 } 603 604 struct getfsmap_info { 605 struct super_block *gi_sb; 606 struct fsmap_head __user *gi_data; 607 unsigned int gi_idx; 608 __u32 gi_last_flags; 609 }; 610 611 static int ext4_getfsmap_format(struct ext4_fsmap *xfm, void *priv) 612 { 613 struct getfsmap_info *info = priv; 614 struct fsmap fm; 615 616 trace_ext4_getfsmap_mapping(info->gi_sb, xfm); 617 618 info->gi_last_flags = xfm->fmr_flags; 619 ext4_fsmap_from_internal(info->gi_sb, &fm, xfm); 620 if (copy_to_user(&info->gi_data->fmh_recs[info->gi_idx++], &fm, 621 sizeof(struct fsmap))) 622 return -EFAULT; 623 624 return 0; 625 } 626 627 static int ext4_ioc_getfsmap(struct super_block *sb, 628 struct fsmap_head __user *arg) 629 { 630 struct getfsmap_info info = { NULL }; 631 struct ext4_fsmap_head xhead = {0}; 632 struct fsmap_head head; 633 bool aborted = false; 634 int error; 635 636 if (copy_from_user(&head, arg, sizeof(struct fsmap_head))) 637 return -EFAULT; 638 if (memchr_inv(head.fmh_reserved, 0, sizeof(head.fmh_reserved)) || 639 memchr_inv(head.fmh_keys[0].fmr_reserved, 0, 640 sizeof(head.fmh_keys[0].fmr_reserved)) || 641 memchr_inv(head.fmh_keys[1].fmr_reserved, 0, 642 sizeof(head.fmh_keys[1].fmr_reserved))) 643 return -EINVAL; 644 /* 645 * ext4 doesn't report file extents at all, so the only valid 646 * file offsets are the magic ones (all zeroes or all ones). 647 */ 648 if (head.fmh_keys[0].fmr_offset || 649 (head.fmh_keys[1].fmr_offset != 0 && 650 head.fmh_keys[1].fmr_offset != -1ULL)) 651 return -EINVAL; 652 653 xhead.fmh_iflags = head.fmh_iflags; 654 xhead.fmh_count = head.fmh_count; 655 ext4_fsmap_to_internal(sb, &xhead.fmh_keys[0], &head.fmh_keys[0]); 656 ext4_fsmap_to_internal(sb, &xhead.fmh_keys[1], &head.fmh_keys[1]); 657 658 trace_ext4_getfsmap_low_key(sb, &xhead.fmh_keys[0]); 659 trace_ext4_getfsmap_high_key(sb, &xhead.fmh_keys[1]); 660 661 info.gi_sb = sb; 662 info.gi_data = arg; 663 error = ext4_getfsmap(sb, &xhead, ext4_getfsmap_format, &info); 664 if (error == EXT4_QUERY_RANGE_ABORT) { 665 error = 0; 666 aborted = true; 667 } else if (error) 668 return error; 669 670 /* If we didn't abort, set the "last" flag in the last fmx */ 671 if (!aborted && info.gi_idx) { 672 info.gi_last_flags |= FMR_OF_LAST; 673 if (copy_to_user(&info.gi_data->fmh_recs[info.gi_idx - 1].fmr_flags, 674 &info.gi_last_flags, 675 sizeof(info.gi_last_flags))) 676 return -EFAULT; 677 } 678 679 /* copy back header */ 680 head.fmh_entries = xhead.fmh_entries; 681 head.fmh_oflags = xhead.fmh_oflags; 682 if (copy_to_user(arg, &head, sizeof(struct fsmap_head))) 683 return -EFAULT; 684 685 return 0; 686 } 687 688 static long ext4_ioctl_group_add(struct file *file, 689 struct ext4_new_group_data *input) 690 { 691 struct super_block *sb = file_inode(file)->i_sb; 692 int err, err2=0; 693 694 err = ext4_resize_begin(sb); 695 if (err) 696 return err; 697 698 if (ext4_has_feature_bigalloc(sb)) { 699 ext4_msg(sb, KERN_ERR, 700 "Online resizing not supported with bigalloc"); 701 err = -EOPNOTSUPP; 702 goto group_add_out; 703 } 704 705 err = mnt_want_write_file(file); 706 if (err) 707 goto group_add_out; 708 709 err = ext4_group_add(sb, input); 710 if (EXT4_SB(sb)->s_journal) { 711 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 712 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 713 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 714 } 715 if (err == 0) 716 err = err2; 717 mnt_drop_write_file(file); 718 if (!err && ext4_has_group_desc_csum(sb) && 719 test_opt(sb, INIT_INODE_TABLE)) 720 err = ext4_register_li_request(sb, input->group); 721 group_add_out: 722 ext4_resize_end(sb); 723 return err; 724 } 725 726 static void ext4_fill_fsxattr(struct inode *inode, struct fsxattr *fa) 727 { 728 struct ext4_inode_info *ei = EXT4_I(inode); 729 730 simple_fill_fsxattr(fa, ext4_iflags_to_xflags(ei->i_flags & 731 EXT4_FL_USER_VISIBLE)); 732 733 if (ext4_has_feature_project(inode->i_sb)) 734 fa->fsx_projid = from_kprojid(&init_user_ns, ei->i_projid); 735 } 736 737 /* copied from fs/ioctl.c */ 738 static int fiemap_check_ranges(struct super_block *sb, 739 u64 start, u64 len, u64 *new_len) 740 { 741 u64 maxbytes = (u64) sb->s_maxbytes; 742 743 *new_len = len; 744 745 if (len == 0) 746 return -EINVAL; 747 748 if (start > maxbytes) 749 return -EFBIG; 750 751 /* 752 * Shrink request scope to what the fs can actually handle. 753 */ 754 if (len > maxbytes || (maxbytes - len) < start) 755 *new_len = maxbytes - start; 756 757 return 0; 758 } 759 760 /* So that the fiemap access checks can't overflow on 32 bit machines. */ 761 #define FIEMAP_MAX_EXTENTS (UINT_MAX / sizeof(struct fiemap_extent)) 762 763 static int ext4_ioctl_get_es_cache(struct file *filp, unsigned long arg) 764 { 765 struct fiemap fiemap; 766 struct fiemap __user *ufiemap = (struct fiemap __user *) arg; 767 struct fiemap_extent_info fieinfo = { 0, }; 768 struct inode *inode = file_inode(filp); 769 struct super_block *sb = inode->i_sb; 770 u64 len; 771 int error; 772 773 if (copy_from_user(&fiemap, ufiemap, sizeof(fiemap))) 774 return -EFAULT; 775 776 if (fiemap.fm_extent_count > FIEMAP_MAX_EXTENTS) 777 return -EINVAL; 778 779 error = fiemap_check_ranges(sb, fiemap.fm_start, fiemap.fm_length, 780 &len); 781 if (error) 782 return error; 783 784 fieinfo.fi_flags = fiemap.fm_flags; 785 fieinfo.fi_extents_max = fiemap.fm_extent_count; 786 fieinfo.fi_extents_start = ufiemap->fm_extents; 787 788 if (fiemap.fm_extent_count != 0 && 789 !access_ok(fieinfo.fi_extents_start, 790 fieinfo.fi_extents_max * sizeof(struct fiemap_extent))) 791 return -EFAULT; 792 793 if (fieinfo.fi_flags & FIEMAP_FLAG_SYNC) 794 filemap_write_and_wait(inode->i_mapping); 795 796 error = ext4_get_es_cache(inode, &fieinfo, fiemap.fm_start, len); 797 fiemap.fm_flags = fieinfo.fi_flags; 798 fiemap.fm_mapped_extents = fieinfo.fi_extents_mapped; 799 if (copy_to_user(ufiemap, &fiemap, sizeof(fiemap))) 800 error = -EFAULT; 801 802 return error; 803 } 804 805 long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 806 { 807 struct inode *inode = file_inode(filp); 808 struct super_block *sb = inode->i_sb; 809 struct ext4_inode_info *ei = EXT4_I(inode); 810 unsigned int flags; 811 812 ext4_debug("cmd = %u, arg = %lu\n", cmd, arg); 813 814 switch (cmd) { 815 case FS_IOC_GETFSMAP: 816 return ext4_ioc_getfsmap(sb, (void __user *)arg); 817 case EXT4_IOC_GETFLAGS: 818 flags = ei->i_flags & EXT4_FL_USER_VISIBLE; 819 if (S_ISREG(inode->i_mode)) 820 flags &= ~EXT4_PROJINHERIT_FL; 821 return put_user(flags, (int __user *) arg); 822 case EXT4_IOC_SETFLAGS: { 823 int err; 824 825 if (!inode_owner_or_capable(inode)) 826 return -EACCES; 827 828 if (get_user(flags, (int __user *) arg)) 829 return -EFAULT; 830 831 if (flags & ~EXT4_FL_USER_VISIBLE) 832 return -EOPNOTSUPP; 833 /* 834 * chattr(1) grabs flags via GETFLAGS, modifies the result and 835 * passes that to SETFLAGS. So we cannot easily make SETFLAGS 836 * more restrictive than just silently masking off visible but 837 * not settable flags as we always did. 838 */ 839 flags &= EXT4_FL_USER_MODIFIABLE; 840 if (ext4_mask_flags(inode->i_mode, flags) != flags) 841 return -EOPNOTSUPP; 842 843 err = mnt_want_write_file(filp); 844 if (err) 845 return err; 846 847 inode_lock(inode); 848 err = ext4_ioctl_check_immutable(inode, 849 from_kprojid(&init_user_ns, ei->i_projid), 850 flags); 851 if (!err) 852 err = ext4_ioctl_setflags(inode, flags); 853 inode_unlock(inode); 854 mnt_drop_write_file(filp); 855 return err; 856 } 857 case EXT4_IOC_GETVERSION: 858 case EXT4_IOC_GETVERSION_OLD: 859 return put_user(inode->i_generation, (int __user *) arg); 860 case EXT4_IOC_SETVERSION: 861 case EXT4_IOC_SETVERSION_OLD: { 862 handle_t *handle; 863 struct ext4_iloc iloc; 864 __u32 generation; 865 int err; 866 867 if (!inode_owner_or_capable(inode)) 868 return -EPERM; 869 870 if (ext4_has_metadata_csum(inode->i_sb)) { 871 ext4_warning(sb, "Setting inode version is not " 872 "supported with metadata_csum enabled."); 873 return -ENOTTY; 874 } 875 876 err = mnt_want_write_file(filp); 877 if (err) 878 return err; 879 if (get_user(generation, (int __user *) arg)) { 880 err = -EFAULT; 881 goto setversion_out; 882 } 883 884 inode_lock(inode); 885 handle = ext4_journal_start(inode, EXT4_HT_INODE, 1); 886 if (IS_ERR(handle)) { 887 err = PTR_ERR(handle); 888 goto unlock_out; 889 } 890 err = ext4_reserve_inode_write(handle, inode, &iloc); 891 if (err == 0) { 892 inode->i_ctime = current_time(inode); 893 inode->i_generation = generation; 894 err = ext4_mark_iloc_dirty(handle, inode, &iloc); 895 } 896 ext4_journal_stop(handle); 897 898 unlock_out: 899 inode_unlock(inode); 900 setversion_out: 901 mnt_drop_write_file(filp); 902 return err; 903 } 904 case EXT4_IOC_GROUP_EXTEND: { 905 ext4_fsblk_t n_blocks_count; 906 int err, err2=0; 907 908 err = ext4_resize_begin(sb); 909 if (err) 910 return err; 911 912 if (get_user(n_blocks_count, (__u32 __user *)arg)) { 913 err = -EFAULT; 914 goto group_extend_out; 915 } 916 917 if (ext4_has_feature_bigalloc(sb)) { 918 ext4_msg(sb, KERN_ERR, 919 "Online resizing not supported with bigalloc"); 920 err = -EOPNOTSUPP; 921 goto group_extend_out; 922 } 923 924 err = mnt_want_write_file(filp); 925 if (err) 926 goto group_extend_out; 927 928 err = ext4_group_extend(sb, EXT4_SB(sb)->s_es, n_blocks_count); 929 if (EXT4_SB(sb)->s_journal) { 930 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 931 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 932 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 933 } 934 if (err == 0) 935 err = err2; 936 mnt_drop_write_file(filp); 937 group_extend_out: 938 ext4_resize_end(sb); 939 return err; 940 } 941 942 case EXT4_IOC_MOVE_EXT: { 943 struct move_extent me; 944 struct fd donor; 945 int err; 946 947 if (!(filp->f_mode & FMODE_READ) || 948 !(filp->f_mode & FMODE_WRITE)) 949 return -EBADF; 950 951 if (copy_from_user(&me, 952 (struct move_extent __user *)arg, sizeof(me))) 953 return -EFAULT; 954 me.moved_len = 0; 955 956 donor = fdget(me.donor_fd); 957 if (!donor.file) 958 return -EBADF; 959 960 if (!(donor.file->f_mode & FMODE_WRITE)) { 961 err = -EBADF; 962 goto mext_out; 963 } 964 965 if (ext4_has_feature_bigalloc(sb)) { 966 ext4_msg(sb, KERN_ERR, 967 "Online defrag not supported with bigalloc"); 968 err = -EOPNOTSUPP; 969 goto mext_out; 970 } else if (IS_DAX(inode)) { 971 ext4_msg(sb, KERN_ERR, 972 "Online defrag not supported with DAX"); 973 err = -EOPNOTSUPP; 974 goto mext_out; 975 } 976 977 err = mnt_want_write_file(filp); 978 if (err) 979 goto mext_out; 980 981 err = ext4_move_extents(filp, donor.file, me.orig_start, 982 me.donor_start, me.len, &me.moved_len); 983 mnt_drop_write_file(filp); 984 985 if (copy_to_user((struct move_extent __user *)arg, 986 &me, sizeof(me))) 987 err = -EFAULT; 988 mext_out: 989 fdput(donor); 990 return err; 991 } 992 993 case EXT4_IOC_GROUP_ADD: { 994 struct ext4_new_group_data input; 995 996 if (copy_from_user(&input, (struct ext4_new_group_input __user *)arg, 997 sizeof(input))) 998 return -EFAULT; 999 1000 return ext4_ioctl_group_add(filp, &input); 1001 } 1002 1003 case EXT4_IOC_MIGRATE: 1004 { 1005 int err; 1006 if (!inode_owner_or_capable(inode)) 1007 return -EACCES; 1008 1009 err = mnt_want_write_file(filp); 1010 if (err) 1011 return err; 1012 /* 1013 * inode_mutex prevent write and truncate on the file. 1014 * Read still goes through. We take i_data_sem in 1015 * ext4_ext_swap_inode_data before we switch the 1016 * inode format to prevent read. 1017 */ 1018 inode_lock((inode)); 1019 err = ext4_ext_migrate(inode); 1020 inode_unlock((inode)); 1021 mnt_drop_write_file(filp); 1022 return err; 1023 } 1024 1025 case EXT4_IOC_ALLOC_DA_BLKS: 1026 { 1027 int err; 1028 if (!inode_owner_or_capable(inode)) 1029 return -EACCES; 1030 1031 err = mnt_want_write_file(filp); 1032 if (err) 1033 return err; 1034 err = ext4_alloc_da_blocks(inode); 1035 mnt_drop_write_file(filp); 1036 return err; 1037 } 1038 1039 case EXT4_IOC_SWAP_BOOT: 1040 { 1041 int err; 1042 if (!(filp->f_mode & FMODE_WRITE)) 1043 return -EBADF; 1044 err = mnt_want_write_file(filp); 1045 if (err) 1046 return err; 1047 err = swap_inode_boot_loader(sb, inode); 1048 mnt_drop_write_file(filp); 1049 return err; 1050 } 1051 1052 case EXT4_IOC_RESIZE_FS: { 1053 ext4_fsblk_t n_blocks_count; 1054 int err = 0, err2 = 0; 1055 ext4_group_t o_group = EXT4_SB(sb)->s_groups_count; 1056 1057 if (copy_from_user(&n_blocks_count, (__u64 __user *)arg, 1058 sizeof(__u64))) { 1059 return -EFAULT; 1060 } 1061 1062 err = ext4_resize_begin(sb); 1063 if (err) 1064 return err; 1065 1066 err = mnt_want_write_file(filp); 1067 if (err) 1068 goto resizefs_out; 1069 1070 err = ext4_resize_fs(sb, n_blocks_count); 1071 if (EXT4_SB(sb)->s_journal) { 1072 jbd2_journal_lock_updates(EXT4_SB(sb)->s_journal); 1073 err2 = jbd2_journal_flush(EXT4_SB(sb)->s_journal); 1074 jbd2_journal_unlock_updates(EXT4_SB(sb)->s_journal); 1075 } 1076 if (err == 0) 1077 err = err2; 1078 mnt_drop_write_file(filp); 1079 if (!err && (o_group < EXT4_SB(sb)->s_groups_count) && 1080 ext4_has_group_desc_csum(sb) && 1081 test_opt(sb, INIT_INODE_TABLE)) 1082 err = ext4_register_li_request(sb, o_group); 1083 1084 resizefs_out: 1085 ext4_resize_end(sb); 1086 return err; 1087 } 1088 1089 case FITRIM: 1090 { 1091 struct request_queue *q = bdev_get_queue(sb->s_bdev); 1092 struct fstrim_range range; 1093 int ret = 0; 1094 1095 if (!capable(CAP_SYS_ADMIN)) 1096 return -EPERM; 1097 1098 if (!blk_queue_discard(q)) 1099 return -EOPNOTSUPP; 1100 1101 /* 1102 * We haven't replayed the journal, so we cannot use our 1103 * block-bitmap-guided storage zapping commands. 1104 */ 1105 if (test_opt(sb, NOLOAD) && ext4_has_feature_journal(sb)) 1106 return -EROFS; 1107 1108 if (copy_from_user(&range, (struct fstrim_range __user *)arg, 1109 sizeof(range))) 1110 return -EFAULT; 1111 1112 range.minlen = max((unsigned int)range.minlen, 1113 q->limits.discard_granularity); 1114 ret = ext4_trim_fs(sb, &range); 1115 if (ret < 0) 1116 return ret; 1117 1118 if (copy_to_user((struct fstrim_range __user *)arg, &range, 1119 sizeof(range))) 1120 return -EFAULT; 1121 1122 return 0; 1123 } 1124 case EXT4_IOC_PRECACHE_EXTENTS: 1125 return ext4_ext_precache(inode); 1126 1127 case EXT4_IOC_SET_ENCRYPTION_POLICY: 1128 if (!ext4_has_feature_encrypt(sb)) 1129 return -EOPNOTSUPP; 1130 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); 1131 1132 case EXT4_IOC_GET_ENCRYPTION_PWSALT: { 1133 #ifdef CONFIG_FS_ENCRYPTION 1134 int err, err2; 1135 struct ext4_sb_info *sbi = EXT4_SB(sb); 1136 handle_t *handle; 1137 1138 if (!ext4_has_feature_encrypt(sb)) 1139 return -EOPNOTSUPP; 1140 if (uuid_is_zero(sbi->s_es->s_encrypt_pw_salt)) { 1141 err = mnt_want_write_file(filp); 1142 if (err) 1143 return err; 1144 handle = ext4_journal_start_sb(sb, EXT4_HT_MISC, 1); 1145 if (IS_ERR(handle)) { 1146 err = PTR_ERR(handle); 1147 goto pwsalt_err_exit; 1148 } 1149 err = ext4_journal_get_write_access(handle, sbi->s_sbh); 1150 if (err) 1151 goto pwsalt_err_journal; 1152 generate_random_uuid(sbi->s_es->s_encrypt_pw_salt); 1153 err = ext4_handle_dirty_metadata(handle, NULL, 1154 sbi->s_sbh); 1155 pwsalt_err_journal: 1156 err2 = ext4_journal_stop(handle); 1157 if (err2 && !err) 1158 err = err2; 1159 pwsalt_err_exit: 1160 mnt_drop_write_file(filp); 1161 if (err) 1162 return err; 1163 } 1164 if (copy_to_user((void __user *) arg, 1165 sbi->s_es->s_encrypt_pw_salt, 16)) 1166 return -EFAULT; 1167 return 0; 1168 #else 1169 return -EOPNOTSUPP; 1170 #endif 1171 } 1172 case EXT4_IOC_GET_ENCRYPTION_POLICY: 1173 if (!ext4_has_feature_encrypt(sb)) 1174 return -EOPNOTSUPP; 1175 return fscrypt_ioctl_get_policy(filp, (void __user *)arg); 1176 1177 case FS_IOC_GET_ENCRYPTION_POLICY_EX: 1178 if (!ext4_has_feature_encrypt(sb)) 1179 return -EOPNOTSUPP; 1180 return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg); 1181 1182 case FS_IOC_ADD_ENCRYPTION_KEY: 1183 if (!ext4_has_feature_encrypt(sb)) 1184 return -EOPNOTSUPP; 1185 return fscrypt_ioctl_add_key(filp, (void __user *)arg); 1186 1187 case FS_IOC_REMOVE_ENCRYPTION_KEY: 1188 if (!ext4_has_feature_encrypt(sb)) 1189 return -EOPNOTSUPP; 1190 return fscrypt_ioctl_remove_key(filp, (void __user *)arg); 1191 1192 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: 1193 if (!ext4_has_feature_encrypt(sb)) 1194 return -EOPNOTSUPP; 1195 return fscrypt_ioctl_remove_key_all_users(filp, 1196 (void __user *)arg); 1197 case FS_IOC_GET_ENCRYPTION_KEY_STATUS: 1198 if (!ext4_has_feature_encrypt(sb)) 1199 return -EOPNOTSUPP; 1200 return fscrypt_ioctl_get_key_status(filp, (void __user *)arg); 1201 1202 case FS_IOC_GET_ENCRYPTION_NONCE: 1203 if (!ext4_has_feature_encrypt(sb)) 1204 return -EOPNOTSUPP; 1205 return fscrypt_ioctl_get_nonce(filp, (void __user *)arg); 1206 1207 case EXT4_IOC_CLEAR_ES_CACHE: 1208 { 1209 if (!inode_owner_or_capable(inode)) 1210 return -EACCES; 1211 ext4_clear_inode_es(inode); 1212 return 0; 1213 } 1214 1215 case EXT4_IOC_GETSTATE: 1216 { 1217 __u32 state = 0; 1218 1219 if (ext4_test_inode_state(inode, EXT4_STATE_EXT_PRECACHED)) 1220 state |= EXT4_STATE_FLAG_EXT_PRECACHED; 1221 if (ext4_test_inode_state(inode, EXT4_STATE_NEW)) 1222 state |= EXT4_STATE_FLAG_NEW; 1223 if (ext4_test_inode_state(inode, EXT4_STATE_NEWENTRY)) 1224 state |= EXT4_STATE_FLAG_NEWENTRY; 1225 if (ext4_test_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE)) 1226 state |= EXT4_STATE_FLAG_DA_ALLOC_CLOSE; 1227 1228 return put_user(state, (__u32 __user *) arg); 1229 } 1230 1231 case EXT4_IOC_GET_ES_CACHE: 1232 return ext4_ioctl_get_es_cache(filp, arg); 1233 1234 case EXT4_IOC_FSGETXATTR: 1235 { 1236 struct fsxattr fa; 1237 1238 ext4_fill_fsxattr(inode, &fa); 1239 1240 if (copy_to_user((struct fsxattr __user *)arg, 1241 &fa, sizeof(fa))) 1242 return -EFAULT; 1243 return 0; 1244 } 1245 case EXT4_IOC_FSSETXATTR: 1246 { 1247 struct fsxattr fa, old_fa; 1248 int err; 1249 1250 if (copy_from_user(&fa, (struct fsxattr __user *)arg, 1251 sizeof(fa))) 1252 return -EFAULT; 1253 1254 /* Make sure caller has proper permission */ 1255 if (!inode_owner_or_capable(inode)) 1256 return -EACCES; 1257 1258 if (fa.fsx_xflags & ~EXT4_SUPPORTED_FS_XFLAGS) 1259 return -EOPNOTSUPP; 1260 1261 flags = ext4_xflags_to_iflags(fa.fsx_xflags); 1262 if (ext4_mask_flags(inode->i_mode, flags) != flags) 1263 return -EOPNOTSUPP; 1264 1265 err = mnt_want_write_file(filp); 1266 if (err) 1267 return err; 1268 1269 inode_lock(inode); 1270 ext4_fill_fsxattr(inode, &old_fa); 1271 err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa); 1272 if (err) 1273 goto out; 1274 flags = (ei->i_flags & ~EXT4_FL_XFLAG_VISIBLE) | 1275 (flags & EXT4_FL_XFLAG_VISIBLE); 1276 err = ext4_ioctl_check_immutable(inode, fa.fsx_projid, flags); 1277 if (err) 1278 goto out; 1279 err = ext4_ioctl_setflags(inode, flags); 1280 if (err) 1281 goto out; 1282 err = ext4_ioctl_setproject(filp, fa.fsx_projid); 1283 out: 1284 inode_unlock(inode); 1285 mnt_drop_write_file(filp); 1286 return err; 1287 } 1288 case EXT4_IOC_SHUTDOWN: 1289 return ext4_shutdown(sb, arg); 1290 1291 case FS_IOC_ENABLE_VERITY: 1292 if (!ext4_has_feature_verity(sb)) 1293 return -EOPNOTSUPP; 1294 return fsverity_ioctl_enable(filp, (const void __user *)arg); 1295 1296 case FS_IOC_MEASURE_VERITY: 1297 if (!ext4_has_feature_verity(sb)) 1298 return -EOPNOTSUPP; 1299 return fsverity_ioctl_measure(filp, (void __user *)arg); 1300 1301 default: 1302 return -ENOTTY; 1303 } 1304 } 1305 1306 #ifdef CONFIG_COMPAT 1307 long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 1308 { 1309 /* These are just misnamed, they actually get/put from/to user an int */ 1310 switch (cmd) { 1311 case EXT4_IOC32_GETFLAGS: 1312 cmd = EXT4_IOC_GETFLAGS; 1313 break; 1314 case EXT4_IOC32_SETFLAGS: 1315 cmd = EXT4_IOC_SETFLAGS; 1316 break; 1317 case EXT4_IOC32_GETVERSION: 1318 cmd = EXT4_IOC_GETVERSION; 1319 break; 1320 case EXT4_IOC32_SETVERSION: 1321 cmd = EXT4_IOC_SETVERSION; 1322 break; 1323 case EXT4_IOC32_GROUP_EXTEND: 1324 cmd = EXT4_IOC_GROUP_EXTEND; 1325 break; 1326 case EXT4_IOC32_GETVERSION_OLD: 1327 cmd = EXT4_IOC_GETVERSION_OLD; 1328 break; 1329 case EXT4_IOC32_SETVERSION_OLD: 1330 cmd = EXT4_IOC_SETVERSION_OLD; 1331 break; 1332 case EXT4_IOC32_GETRSVSZ: 1333 cmd = EXT4_IOC_GETRSVSZ; 1334 break; 1335 case EXT4_IOC32_SETRSVSZ: 1336 cmd = EXT4_IOC_SETRSVSZ; 1337 break; 1338 case EXT4_IOC32_GROUP_ADD: { 1339 struct compat_ext4_new_group_input __user *uinput; 1340 struct ext4_new_group_data input; 1341 int err; 1342 1343 uinput = compat_ptr(arg); 1344 err = get_user(input.group, &uinput->group); 1345 err |= get_user(input.block_bitmap, &uinput->block_bitmap); 1346 err |= get_user(input.inode_bitmap, &uinput->inode_bitmap); 1347 err |= get_user(input.inode_table, &uinput->inode_table); 1348 err |= get_user(input.blocks_count, &uinput->blocks_count); 1349 err |= get_user(input.reserved_blocks, 1350 &uinput->reserved_blocks); 1351 if (err) 1352 return -EFAULT; 1353 return ext4_ioctl_group_add(file, &input); 1354 } 1355 case EXT4_IOC_MOVE_EXT: 1356 case EXT4_IOC_RESIZE_FS: 1357 case FITRIM: 1358 case EXT4_IOC_PRECACHE_EXTENTS: 1359 case EXT4_IOC_SET_ENCRYPTION_POLICY: 1360 case EXT4_IOC_GET_ENCRYPTION_PWSALT: 1361 case EXT4_IOC_GET_ENCRYPTION_POLICY: 1362 case FS_IOC_GET_ENCRYPTION_POLICY_EX: 1363 case FS_IOC_ADD_ENCRYPTION_KEY: 1364 case FS_IOC_REMOVE_ENCRYPTION_KEY: 1365 case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: 1366 case FS_IOC_GET_ENCRYPTION_KEY_STATUS: 1367 case FS_IOC_GET_ENCRYPTION_NONCE: 1368 case EXT4_IOC_SHUTDOWN: 1369 case FS_IOC_GETFSMAP: 1370 case FS_IOC_ENABLE_VERITY: 1371 case FS_IOC_MEASURE_VERITY: 1372 case EXT4_IOC_CLEAR_ES_CACHE: 1373 case EXT4_IOC_GETSTATE: 1374 case EXT4_IOC_GET_ES_CACHE: 1375 case EXT4_IOC_FSGETXATTR: 1376 case EXT4_IOC_FSSETXATTR: 1377 break; 1378 default: 1379 return -ENOIOCTLCMD; 1380 } 1381 return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); 1382 } 1383 #endif 1384