1 /* 2 * tune2fs.c - Change the file system parameters on an ext2 file system 3 * 4 * Copyright (C) 1992, 1993, 1994 Remy Card <card (at) masi.ibp.fr> 5 * Laboratoire MASI, Institut Blaise Pascal 6 * Universite Pierre et Marie Curie (Paris VI) 7 * 8 * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o. 9 * 10 * %Begin-Header% 11 * This file may be redistributed under the terms of the GNU Public 12 * License. 13 * %End-Header% 14 */ 15 16 /* 17 * History: 18 * 93/06/01 - Creation 19 * 93/10/31 - Added the -c option to change the maximal mount counts 20 * 93/12/14 - Added -l flag to list contents of superblock 21 * M.J.E. Mol (marcel (at) duteca.et.tudelft.nl) 22 * F.W. ten Wolde (franky (at) duteca.et.tudelft.nl) 23 * 93/12/29 - Added the -e option to change errors behavior 24 * 94/02/27 - Ported to use the ext2fs library 25 * 94/03/06 - Added the checks interval from Uwe Ohse (uwe (at) tirka.gun.de) 26 */ 27 28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */ 29 #include "config.h" 30 #include <fcntl.h> 31 #include <grp.h> 32 #ifdef HAVE_GETOPT_H 33 #include <getopt.h> 34 #else 35 extern char *optarg; 36 extern int optind; 37 #endif 38 #include <pwd.h> 39 #include <stdio.h> 40 #ifdef HAVE_STDLIB_H 41 #include <stdlib.h> 42 #endif 43 #ifdef HAVE_STRINGS_H 44 #include <strings.h> /* for strcasecmp() */ 45 #else 46 #define _BSD_SOURCE /* for inclusion of strcasecmp() via <string.h> */ 47 #define _DEFAULT_SOURCE /* since glibc 2.20 _BSD_SOURCE is deprecated */ 48 #endif 49 #include <string.h> 50 #include <time.h> 51 #include <unistd.h> 52 #include <sys/types.h> 53 #include <libgen.h> 54 #include <limits.h> 55 56 #include "ext2fs/ext2_fs.h" 57 #include "ext2fs/ext2fs.h" 58 #include "ext2fs/kernel-jbd.h" 59 #include "et/com_err.h" 60 #include "support/plausible.h" 61 #include "support/quotaio.h" 62 #include "uuid/uuid.h" 63 #include "e2p/e2p.h" 64 #include "util.h" 65 #include "blkid/blkid.h" 66 67 #include "../version.h" 68 #include "support/nls-enable.h" 69 70 #define QOPT_ENABLE (1) 71 #define QOPT_DISABLE (-1) 72 73 extern int ask_yn(const char *string, int def); 74 75 const char *program_name = "tune2fs"; 76 char *device_name; 77 char *new_label, *new_last_mounted, *new_UUID; 78 char *io_options; 79 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag; 80 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag; 81 static int I_flag; 82 static int clear_mmp; 83 static time_t last_check_time; 84 static int print_label; 85 static int max_mount_count, mount_count, mount_flags; 86 static unsigned long interval; 87 static blk64_t reserved_blocks; 88 static double reserved_ratio; 89 static unsigned long resgid, resuid; 90 static unsigned short errors; 91 static int open_flag; 92 static char *features_cmd; 93 static char *mntopts_cmd; 94 static int stride, stripe_width; 95 static int stride_set, stripe_width_set; 96 static char *extended_cmd; 97 static unsigned long new_inode_size; 98 static char *ext_mount_opts; 99 static int quota_enable[MAXQUOTAS]; 100 static int rewrite_checksums; 101 static int feature_64bit; 102 static int fsck_requested; 103 static char *undo_file; 104 105 int journal_size, journal_flags; 106 char *journal_device; 107 static blk64_t journal_location = ~0LL; 108 109 static struct list_head blk_move_list; 110 111 struct blk_move { 112 struct list_head list; 113 blk64_t old_loc; 114 blk64_t new_loc; 115 }; 116 117 errcode_t ext2fs_run_ext3_journal(ext2_filsys *fs); 118 119 static const char *please_fsck = N_("Please run e2fsck -f on the filesystem.\n"); 120 static const char *please_dir_fsck = 121 N_("Please run e2fsck -fD on the filesystem.\n"); 122 123 #ifdef CONFIG_BUILD_FINDFS 124 void do_findfs(int argc, char **argv); 125 #endif 126 127 #ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jbd-debug */ 128 int journal_enable_debug = -1; 129 #endif 130 131 static void usage(void) 132 { 133 fprintf(stderr, 134 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] [-f] " 135 "[-g group]\n" 136 "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n" 137 "\t[-m reserved_blocks_percent] [-o [^]mount_options[,...]]\n" 138 "\t[-p mmp_update_interval] [-r reserved_blocks_count] " 139 "[-u user]\n" 140 "\t[-C mount_count] [-L volume_label] [-M last_mounted_dir]\n" 141 "\t[-O [^]feature[,...]] [-Q quota_options]\n" 142 "\t[-E extended-option[,...]] [-T last_check_time] " 143 "[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"), 144 program_name); 145 exit(1); 146 } 147 148 static __u32 ok_features[3] = { 149 /* Compat */ 150 EXT3_FEATURE_COMPAT_HAS_JOURNAL | 151 EXT2_FEATURE_COMPAT_DIR_INDEX, 152 /* Incompat */ 153 EXT2_FEATURE_INCOMPAT_FILETYPE | 154 EXT3_FEATURE_INCOMPAT_EXTENTS | 155 EXT4_FEATURE_INCOMPAT_FLEX_BG | 156 EXT4_FEATURE_INCOMPAT_MMP | 157 EXT4_FEATURE_INCOMPAT_64BIT | 158 EXT4_FEATURE_INCOMPAT_ENCRYPT | 159 EXT4_FEATURE_INCOMPAT_CSUM_SEED, 160 /* R/O compat */ 161 EXT2_FEATURE_RO_COMPAT_LARGE_FILE | 162 EXT4_FEATURE_RO_COMPAT_HUGE_FILE| 163 EXT4_FEATURE_RO_COMPAT_DIR_NLINK| 164 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE| 165 EXT4_FEATURE_RO_COMPAT_GDT_CSUM | 166 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER | 167 EXT4_FEATURE_RO_COMPAT_QUOTA | 168 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM | 169 EXT4_FEATURE_RO_COMPAT_READONLY | 170 EXT4_FEATURE_RO_COMPAT_PROJECT 171 }; 172 173 static __u32 clear_ok_features[3] = { 174 /* Compat */ 175 EXT3_FEATURE_COMPAT_HAS_JOURNAL | 176 EXT2_FEATURE_COMPAT_RESIZE_INODE | 177 EXT2_FEATURE_COMPAT_DIR_INDEX, 178 /* Incompat */ 179 EXT2_FEATURE_INCOMPAT_FILETYPE | 180 EXT4_FEATURE_INCOMPAT_FLEX_BG | 181 EXT4_FEATURE_INCOMPAT_MMP | 182 EXT4_FEATURE_INCOMPAT_64BIT | 183 EXT4_FEATURE_INCOMPAT_CSUM_SEED, 184 /* R/O compat */ 185 EXT2_FEATURE_RO_COMPAT_LARGE_FILE | 186 EXT4_FEATURE_RO_COMPAT_HUGE_FILE| 187 EXT4_FEATURE_RO_COMPAT_DIR_NLINK| 188 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE| 189 EXT4_FEATURE_RO_COMPAT_GDT_CSUM | 190 EXT4_FEATURE_RO_COMPAT_QUOTA | 191 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM | 192 EXT4_FEATURE_RO_COMPAT_READONLY 193 }; 194 195 /** 196 * Try to get journal super block if any 197 */ 198 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE]) 199 { 200 int retval; 201 journal_superblock_t *jsb; 202 203 if (!ext2fs_has_feature_journal_dev(jfs->super)) { 204 return EXT2_ET_UNSUPP_FEATURE; 205 } 206 207 /* Get the journal superblock */ 208 if ((retval = io_channel_read_blk64(jfs->io, 209 ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) { 210 com_err(program_name, retval, "%s", 211 _("while reading journal superblock")); 212 return retval; 213 } 214 215 jsb = (journal_superblock_t *) buf; 216 if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) || 217 (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) { 218 fputs(_("Journal superblock not found!\n"), stderr); 219 return EXT2_ET_BAD_MAGIC; 220 } 221 222 return 0; 223 } 224 225 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JFS_USERS_SIZE], 226 int nr_users) 227 { 228 int i; 229 for (i = 0; i < nr_users; i++) { 230 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0) 231 return &s_users[i * UUID_SIZE]; 232 } 233 234 return NULL; 235 } 236 237 /* 238 * Remove an external journal from the filesystem 239 */ 240 static int remove_journal_device(ext2_filsys fs) 241 { 242 char *journal_path; 243 ext2_filsys jfs; 244 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8))); 245 journal_superblock_t *jsb; 246 int i, nr_users; 247 errcode_t retval; 248 int commit_remove_journal = 0; 249 io_manager io_ptr; 250 251 if (f_flag) 252 commit_remove_journal = 1; /* force removal even if error */ 253 254 uuid_unparse(fs->super->s_journal_uuid, buf); 255 journal_path = blkid_get_devname(NULL, "UUID", buf); 256 257 if (!journal_path) { 258 journal_path = 259 ext2fs_find_block_device(fs->super->s_journal_dev); 260 if (!journal_path) 261 goto no_valid_journal; 262 } 263 264 #ifdef CONFIG_TESTIO_DEBUG 265 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) { 266 io_ptr = test_io_manager; 267 test_io_backing_manager = unix_io_manager; 268 } else 269 #endif 270 io_ptr = unix_io_manager; 271 retval = ext2fs_open(journal_path, EXT2_FLAG_RW| 272 EXT2_FLAG_JOURNAL_DEV_OK, 0, 273 fs->blocksize, io_ptr, &jfs); 274 if (retval) { 275 com_err(program_name, retval, "%s", 276 _("while trying to open external journal")); 277 goto no_valid_journal; 278 } 279 280 if ((retval = get_journal_sb(jfs, buf))) { 281 if (retval == EXT2_ET_UNSUPP_FEATURE) 282 fprintf(stderr, _("%s is not a journal device.\n"), 283 journal_path); 284 goto no_valid_journal; 285 } 286 287 jsb = (journal_superblock_t *) buf; 288 /* Find the filesystem UUID */ 289 nr_users = ntohl(jsb->s_nr_users); 290 291 if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) { 292 fputs(_("Filesystem's UUID not found on journal device.\n"), 293 stderr); 294 commit_remove_journal = 1; 295 goto no_valid_journal; 296 } 297 nr_users--; 298 for (i = 0; i < nr_users; i++) 299 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16); 300 jsb->s_nr_users = htonl(nr_users); 301 302 /* Write back the journal superblock */ 303 retval = io_channel_write_blk64(jfs->io, 304 ext2fs_journal_sb_start(fs->blocksize), 305 -SUPERBLOCK_SIZE, buf); 306 if (retval) { 307 com_err(program_name, retval, 308 "while writing journal superblock."); 309 goto no_valid_journal; 310 } 311 312 commit_remove_journal = 1; 313 314 no_valid_journal: 315 if (commit_remove_journal == 0) { 316 fputs(_("Cannot locate journal device. It was NOT removed\n" 317 "Use -f option to remove missing journal device.\n"), 318 stderr); 319 return 1; 320 } 321 fs->super->s_journal_dev = 0; 322 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks)); 323 uuid_clear(fs->super->s_journal_uuid); 324 ext2fs_mark_super_dirty(fs); 325 fputs(_("Journal removed\n"), stdout); 326 free(journal_path); 327 328 return 0; 329 } 330 331 /* Helper function for remove_journal_inode */ 332 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr, 333 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)), 334 blk64_t ref_block EXT2FS_ATTR((unused)), 335 int ref_offset EXT2FS_ATTR((unused)), 336 void *private EXT2FS_ATTR((unused))) 337 { 338 blk64_t block; 339 int group; 340 341 block = *blocknr; 342 ext2fs_unmark_block_bitmap2(fs->block_map, block); 343 group = ext2fs_group_of_blk2(fs, block); 344 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1); 345 ext2fs_group_desc_csum_set(fs, group); 346 ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs)); 347 return 0; 348 } 349 350 /* 351 * Remove the journal inode from the filesystem 352 */ 353 static errcode_t remove_journal_inode(ext2_filsys fs) 354 { 355 struct ext2_inode inode; 356 errcode_t retval; 357 ino_t ino = fs->super->s_journal_inum; 358 359 retval = ext2fs_read_inode(fs, ino, &inode); 360 if (retval) { 361 com_err(program_name, retval, "%s", 362 _("while reading journal inode")); 363 return retval; 364 } 365 if (ino == EXT2_JOURNAL_INO) { 366 retval = ext2fs_read_bitmaps(fs); 367 if (retval) { 368 com_err(program_name, retval, "%s", 369 _("while reading bitmaps")); 370 return retval; 371 } 372 retval = ext2fs_block_iterate3(fs, ino, 373 BLOCK_FLAG_READ_ONLY, NULL, 374 release_blocks_proc, NULL); 375 if (retval) { 376 com_err(program_name, retval, "%s", 377 _("while clearing journal inode")); 378 return retval; 379 } 380 memset(&inode, 0, sizeof(inode)); 381 ext2fs_mark_bb_dirty(fs); 382 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 383 } else 384 inode.i_flags &= ~EXT2_IMMUTABLE_FL; 385 retval = ext2fs_write_inode(fs, ino, &inode); 386 if (retval) { 387 com_err(program_name, retval, "%s", 388 _("while writing journal inode")); 389 return retval; 390 } 391 fs->super->s_journal_inum = 0; 392 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks)); 393 ext2fs_mark_super_dirty(fs); 394 395 return 0; 396 } 397 398 /* 399 * Update the default mount options 400 */ 401 static int update_mntopts(ext2_filsys fs, char *mntopts) 402 { 403 struct ext2_super_block *sb = fs->super; 404 405 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) { 406 fprintf(stderr, _("Invalid mount option set: %s\n"), 407 mntopts); 408 return 1; 409 } 410 ext2fs_mark_super_dirty(fs); 411 412 return 0; 413 } 414 415 static void check_fsck_needed(ext2_filsys fs, const char *prompt) 416 { 417 /* Refuse to modify anything but a freshly checked valid filesystem. */ 418 if (!(fs->super->s_state & EXT2_VALID_FS) || 419 (fs->super->s_state & EXT2_ERROR_FS) || 420 (fs->super->s_lastcheck < fs->super->s_mtime)) { 421 printf("\n%s\n", _(please_fsck)); 422 if (mount_flags & EXT2_MF_READONLY) 423 printf("%s", _("(and reboot afterwards!)\n")); 424 exit(1); 425 } 426 427 /* Give the admin a few seconds to bail out of a dangerous op. */ 428 if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1))) 429 return; 430 431 puts(prompt); 432 proceed_question(5); 433 } 434 435 static void request_dir_fsck_afterwards(ext2_filsys fs) 436 { 437 static int requested; 438 439 if (requested++) 440 return; 441 fsck_requested++; 442 fs->super->s_state &= ~EXT2_VALID_FS; 443 printf("\n%s\n", _(please_dir_fsck)); 444 if (mount_flags & EXT2_MF_READONLY) 445 printf("%s", _("(and reboot afterwards!)\n")); 446 } 447 448 static void request_fsck_afterwards(ext2_filsys fs) 449 { 450 static int requested = 0; 451 452 if (requested++) 453 return; 454 fsck_requested++; 455 fs->super->s_state &= ~EXT2_VALID_FS; 456 printf("\n%s\n", _(please_fsck)); 457 if (mount_flags & EXT2_MF_READONLY) 458 printf("%s", _("(and reboot afterwards!)\n")); 459 } 460 461 static void convert_64bit(ext2_filsys fs, int direction) 462 { 463 if (!direction) 464 return; 465 466 /* 467 * Is resize2fs going to demand a fsck run? Might as well tell the 468 * user now. 469 */ 470 if (!fsck_requested && 471 ((fs->super->s_state & EXT2_ERROR_FS) || 472 !(fs->super->s_state & EXT2_VALID_FS) || 473 fs->super->s_lastcheck < fs->super->s_mtime)) 474 request_fsck_afterwards(fs); 475 if (fsck_requested) 476 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"), 477 direction > 0 ? "-b" : "-s", fs->device_name); 478 else 479 fprintf(stderr, _("Please run `resize2fs %s %s"), 480 direction > 0 ? "-b" : "-s", fs->device_name); 481 482 if (undo_file) 483 fprintf(stderr, _(" -z \"%s\""), undo_file); 484 if (direction > 0) 485 fprintf(stderr, _("' to enable 64-bit mode.\n")); 486 else 487 fprintf(stderr, _("' to disable 64-bit mode.\n")); 488 } 489 490 /* Rewrite extents */ 491 static errcode_t rewrite_extents(ext2_filsys fs, ext2_ino_t ino, 492 struct ext2_inode *inode) 493 { 494 ext2_extent_handle_t handle; 495 struct ext2fs_extent extent; 496 errcode_t errcode; 497 struct ext2_extent_info info; 498 499 if (!(inode->i_flags & EXT4_EXTENTS_FL) || 500 !ext2fs_has_feature_metadata_csum(fs->super)) 501 return 0; 502 503 errcode = ext2fs_extent_open(fs, ino, &handle); 504 if (errcode) 505 return errcode; 506 507 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent); 508 if (errcode) 509 goto out; 510 511 do { 512 errcode = ext2fs_extent_get_info(handle, &info); 513 if (errcode) 514 break; 515 516 /* 517 * If this is the first extent in an extent block that we 518 * haven't visited, rewrite the extent to force the ETB 519 * checksum to be rewritten. 520 */ 521 if (info.curr_entry == 1 && info.curr_level != 0 && 522 !(extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)) { 523 errcode = ext2fs_extent_replace(handle, 0, &extent); 524 if (errcode) 525 break; 526 } 527 528 /* Skip to the end of a block of leaf nodes */ 529 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) { 530 errcode = ext2fs_extent_get(handle, 531 EXT2_EXTENT_LAST_SIB, 532 &extent); 533 if (errcode) 534 break; 535 } 536 537 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_NEXT, &extent); 538 } while (errcode == 0); 539 540 out: 541 /* Ok if we run off the end */ 542 if (errcode == EXT2_ET_EXTENT_NO_NEXT) 543 errcode = 0; 544 ext2fs_extent_free(handle); 545 return errcode; 546 } 547 548 /* 549 * Rewrite directory blocks with checksums 550 */ 551 struct rewrite_dir_context { 552 char *buf; 553 errcode_t errcode; 554 ext2_ino_t dir; 555 int is_htree; 556 }; 557 558 static int rewrite_dir_block(ext2_filsys fs, 559 blk64_t *blocknr, 560 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)), 561 blk64_t ref_block EXT2FS_ATTR((unused)), 562 int ref_offset EXT2FS_ATTR((unused)), 563 void *priv_data) 564 { 565 struct ext2_dx_countlimit *dcl = NULL; 566 struct rewrite_dir_context *ctx = priv_data; 567 int dcl_offset, changed = 0; 568 569 ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0, 570 ctx->dir); 571 if (ctx->errcode) 572 return BLOCK_ABORT; 573 574 /* if htree node... */ 575 if (ctx->is_htree) 576 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf, 577 &dcl, &dcl_offset); 578 if (dcl) { 579 if (!ext2fs_has_feature_metadata_csum(fs->super)) { 580 /* Ensure limit is the max size */ 581 int max_entries = (fs->blocksize - dcl_offset) / 582 sizeof(struct ext2_dx_entry); 583 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) { 584 changed = 1; 585 dcl->limit = ext2fs_cpu_to_le16(max_entries); 586 } 587 } else { 588 /* If htree block is full then rebuild the dir */ 589 if (ext2fs_le16_to_cpu(dcl->count) == 590 ext2fs_le16_to_cpu(dcl->limit)) { 591 request_dir_fsck_afterwards(fs); 592 return 0; 593 } 594 /* 595 * Ensure dcl->limit is small enough to leave room for 596 * the checksum tail. 597 */ 598 int max_entries = (fs->blocksize - (dcl_offset + 599 sizeof(struct ext2_dx_tail))) / 600 sizeof(struct ext2_dx_entry); 601 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) 602 dcl->limit = ext2fs_cpu_to_le16(max_entries); 603 /* Always rewrite checksum */ 604 changed = 1; 605 } 606 } else { 607 unsigned int rec_len, name_size; 608 char *top = ctx->buf + fs->blocksize; 609 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf; 610 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL; 611 612 /* Find last and penultimate dirent */ 613 while ((char *)de < top) { 614 penultimate_de = last_de; 615 last_de = de; 616 ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len); 617 if (!ctx->errcode && !rec_len) 618 ctx->errcode = EXT2_ET_DIR_CORRUPTED; 619 if (ctx->errcode) 620 return BLOCK_ABORT; 621 de = (struct ext2_dir_entry *)(((char *)de) + rec_len); 622 } 623 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len); 624 if (ctx->errcode) 625 return BLOCK_ABORT; 626 name_size = ext2fs_dirent_name_len(last_de); 627 628 if (!ext2fs_has_feature_metadata_csum(fs->super)) { 629 if (!penultimate_de) 630 return 0; 631 if (last_de->inode || 632 name_size || 633 rec_len != sizeof(struct ext2_dir_entry_tail)) 634 return 0; 635 /* 636 * The last dirent is unused and the right length to 637 * have stored a checksum. Erase it. 638 */ 639 ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de, 640 &rec_len); 641 if (!rec_len) 642 ctx->errcode = EXT2_ET_DIR_CORRUPTED; 643 if (ctx->errcode) 644 return BLOCK_ABORT; 645 ext2fs_set_rec_len(fs, rec_len + 646 sizeof(struct ext2_dir_entry_tail), 647 penultimate_de); 648 changed = 1; 649 } else { 650 unsigned csum_size = sizeof(struct ext2_dir_entry_tail); 651 struct ext2_dir_entry_tail *t; 652 653 /* 654 * If the last dirent looks like the tail, just update 655 * the checksum. 656 */ 657 if (!last_de->inode && 658 rec_len == csum_size) { 659 t = (struct ext2_dir_entry_tail *)last_de; 660 t->det_reserved_name_len = 661 EXT2_DIR_NAME_LEN_CSUM; 662 changed = 1; 663 goto out; 664 } 665 if (name_size & 3) 666 name_size = (name_size & ~3) + 4; 667 /* If there's not enough space for the tail, e2fsck */ 668 if (rec_len <= (8 + name_size + csum_size)) { 669 request_dir_fsck_afterwards(fs); 670 return 0; 671 } 672 /* Shorten that last de and insert the tail */ 673 ext2fs_set_rec_len(fs, rec_len - csum_size, last_de); 674 t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize); 675 ext2fs_initialize_dirent_tail(fs, t); 676 677 /* Always update checksum */ 678 changed = 1; 679 } 680 } 681 682 out: 683 if (!changed) 684 return 0; 685 686 ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf, 687 0, ctx->dir); 688 if (ctx->errcode) 689 return BLOCK_ABORT; 690 691 return 0; 692 } 693 694 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir, 695 struct ext2_inode *inode) 696 { 697 errcode_t retval; 698 struct rewrite_dir_context ctx; 699 700 retval = ext2fs_get_mem(fs->blocksize, &ctx.buf); 701 if (retval) 702 return retval; 703 704 ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL); 705 ctx.dir = dir; 706 ctx.errcode = 0; 707 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY | 708 BLOCK_FLAG_DATA_ONLY, 709 0, rewrite_dir_block, &ctx); 710 711 ext2fs_free_mem(&ctx.buf); 712 if (retval) 713 return retval; 714 715 return ctx.errcode; 716 } 717 718 /* 719 * Forcibly set checksums in all inodes. 720 */ 721 static void rewrite_inodes(ext2_filsys fs) 722 { 723 int length = EXT2_INODE_SIZE(fs->super); 724 struct ext2_inode *inode, *zero; 725 char *ea_buf; 726 ext2_inode_scan scan; 727 errcode_t retval; 728 ext2_ino_t ino; 729 blk64_t file_acl_block; 730 int inode_dirty; 731 732 if (fs->super->s_creator_os == EXT2_OS_HURD) 733 return; 734 735 retval = ext2fs_open_inode_scan(fs, 0, &scan); 736 if (retval) { 737 com_err("set_csum", retval, "while opening inode scan"); 738 exit(1); 739 } 740 741 retval = ext2fs_get_mem(length, &inode); 742 if (retval) { 743 com_err("set_csum", retval, "while allocating memory"); 744 exit(1); 745 } 746 747 retval = ext2fs_get_memzero(length, &zero); 748 if (retval) { 749 com_err("set_csum", retval, "while allocating memory"); 750 exit(1); 751 } 752 753 retval = ext2fs_get_mem(fs->blocksize, &ea_buf); 754 if (retval) { 755 com_err("set_csum", retval, "while allocating memory"); 756 exit(1); 757 } 758 759 do { 760 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length); 761 if (retval) { 762 com_err("set_csum", retval, "while getting next inode"); 763 exit(1); 764 } 765 if (!ino) 766 break; 767 if (ext2fs_test_inode_bitmap2(fs->inode_map, ino)) { 768 inode_dirty = 1; 769 } else { 770 if (memcmp(inode, zero, length) != 0) { 771 memset(inode, 0, length); 772 inode_dirty = 1; 773 } else { 774 inode_dirty = 0; 775 } 776 } 777 778 if (inode_dirty) { 779 retval = ext2fs_write_inode_full(fs, ino, inode, 780 length); 781 if (retval) { 782 com_err("set_csum", retval, "while writing " 783 "inode"); 784 exit(1); 785 } 786 } 787 788 retval = rewrite_extents(fs, ino, inode); 789 if (retval) { 790 com_err("rewrite_extents", retval, 791 "while rewriting extents"); 792 exit(1); 793 } 794 795 if (LINUX_S_ISDIR(inode->i_mode) && 796 ext2fs_inode_has_valid_blocks2(fs, inode)) { 797 retval = rewrite_directory(fs, ino, inode); 798 if (retval) { 799 com_err("rewrite_directory", retval, 800 "while rewriting directories"); 801 exit(1); 802 } 803 } 804 805 file_acl_block = ext2fs_file_acl_block(fs, inode); 806 if (!file_acl_block) 807 continue; 808 retval = ext2fs_read_ext_attr3(fs, file_acl_block, ea_buf, ino); 809 if (retval) { 810 com_err("rewrite_eablock", retval, 811 "while rewriting extended attribute"); 812 exit(1); 813 } 814 retval = ext2fs_write_ext_attr3(fs, file_acl_block, ea_buf, 815 ino); 816 if (retval) { 817 com_err("rewrite_eablock", retval, 818 "while rewriting extended attribute"); 819 exit(1); 820 } 821 } while (ino); 822 823 ext2fs_free_mem(&zero); 824 ext2fs_free_mem(&inode); 825 ext2fs_free_mem(&ea_buf); 826 ext2fs_close_inode_scan(scan); 827 } 828 829 static void rewrite_metadata_checksums(ext2_filsys fs) 830 { 831 errcode_t retval; 832 dgrp_t i; 833 834 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS; 835 ext2fs_init_csum_seed(fs); 836 for (i = 0; i < fs->group_desc_count; i++) 837 ext2fs_group_desc_csum_set(fs, i); 838 retval = ext2fs_read_bitmaps(fs); 839 if (retval) { 840 com_err("rewrite_metadata_checksums", retval, 841 "while reading bitmaps"); 842 exit(1); 843 } 844 rewrite_inodes(fs); 845 ext2fs_mark_ib_dirty(fs); 846 ext2fs_mark_bb_dirty(fs); 847 ext2fs_mmp_update2(fs, 1); 848 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 849 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS; 850 if (ext2fs_has_feature_metadata_csum(fs->super)) 851 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM; 852 else 853 fs->super->s_checksum_type = 0; 854 ext2fs_mark_super_dirty(fs); 855 } 856 857 static void enable_uninit_bg(ext2_filsys fs) 858 { 859 struct ext2_group_desc *gd; 860 dgrp_t i; 861 862 for (i = 0; i < fs->group_desc_count; i++) { 863 gd = ext2fs_group_desc(fs, fs->group_desc, i); 864 gd->bg_itable_unused = 0; 865 gd->bg_flags = EXT2_BG_INODE_ZEROED; 866 ext2fs_group_desc_csum_set(fs, i); 867 } 868 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 869 } 870 871 static errcode_t zero_empty_inodes(ext2_filsys fs) 872 { 873 int length = EXT2_INODE_SIZE(fs->super); 874 struct ext2_inode *inode = NULL; 875 ext2_inode_scan scan; 876 errcode_t retval; 877 ext2_ino_t ino; 878 879 retval = ext2fs_open_inode_scan(fs, 0, &scan); 880 if (retval) 881 goto out; 882 883 retval = ext2fs_get_mem(length, &inode); 884 if (retval) 885 goto out; 886 887 do { 888 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length); 889 if (retval) 890 goto out; 891 if (!ino) 892 break; 893 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) { 894 memset(inode, 0, length); 895 retval = ext2fs_write_inode_full(fs, ino, inode, 896 length); 897 if (retval) 898 goto out; 899 } 900 } while (1); 901 902 out: 903 ext2fs_free_mem(&inode); 904 ext2fs_close_inode_scan(scan); 905 return retval; 906 } 907 908 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag) 909 { 910 struct ext2_group_desc *gd; 911 dgrp_t i; 912 errcode_t retval; 913 blk64_t b, c, d; 914 915 /* Load bitmaps to ensure that the uninit ones get written out */ 916 fs->super->s_feature_ro_compat |= csum_feature_flag; 917 retval = ext2fs_read_bitmaps(fs); 918 fs->super->s_feature_ro_compat &= ~csum_feature_flag; 919 if (retval) { 920 com_err("disable_uninit_bg", retval, 921 "while reading bitmaps"); 922 request_fsck_afterwards(fs); 923 return retval; 924 } 925 ext2fs_mark_ib_dirty(fs); 926 ext2fs_mark_bb_dirty(fs); 927 928 /* If we're only turning off uninit_bg, zero the inodes */ 929 if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) { 930 retval = zero_empty_inodes(fs); 931 if (retval) { 932 com_err("disable_uninit_bg", retval, 933 "while zeroing unused inodes"); 934 request_fsck_afterwards(fs); 935 return retval; 936 } 937 } 938 939 /* The bbitmap is zeroed; we must mark group metadata blocks in use */ 940 for (i = 0; i < fs->group_desc_count; i++) { 941 b = ext2fs_block_bitmap_loc(fs, i); 942 ext2fs_mark_block_bitmap2(fs->block_map, b); 943 b = ext2fs_inode_bitmap_loc(fs, i); 944 ext2fs_mark_block_bitmap2(fs->block_map, b); 945 946 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL); 947 if (retval == 0 && b) 948 ext2fs_mark_block_bitmap2(fs->block_map, b); 949 if (retval == 0 && c) 950 ext2fs_mark_block_bitmap2(fs->block_map, c); 951 if (retval == 0 && d) 952 ext2fs_mark_block_bitmap2(fs->block_map, d); 953 if (retval) { 954 com_err("disable_uninit_bg", retval, 955 "while initializing block bitmaps"); 956 request_fsck_afterwards(fs); 957 } 958 959 gd = ext2fs_group_desc(fs, fs->group_desc, i); 960 gd->bg_itable_unused = 0; 961 gd->bg_flags = 0; 962 ext2fs_group_desc_csum_set(fs, i); 963 } 964 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 965 ext2fs_mark_super_dirty(fs); 966 967 return 0; 968 } 969 970 static void 971 try_confirm_csum_seed_support(void) 972 { 973 if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK)) 974 fputs(_("WARNING: Could not confirm kernel support for " 975 "metadata_csum_seed.\n This requires Linux >= " 976 "v4.4.\n"), stderr); 977 } 978 979 /* 980 * Update the feature set as provided by the user. 981 */ 982 static int update_feature_set(ext2_filsys fs, char *features) 983 { 984 struct ext2_super_block *sb = fs->super; 985 __u32 old_features[3]; 986 int type_err; 987 unsigned int mask_err; 988 errcode_t err; 989 enum quota_type qtype; 990 991 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \ 992 ((&sb->s_feature_compat)[(type)] & (mask))) 993 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \ 994 !((&sb->s_feature_compat)[(type)] & (mask))) 995 #define FEATURE_CHANGED(type, mask) ((mask) & \ 996 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)])) 997 998 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat; 999 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat; 1000 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat; 1001 1002 if (e2p_edit_feature2(features, &sb->s_feature_compat, 1003 ok_features, clear_ok_features, 1004 &type_err, &mask_err)) { 1005 if (!mask_err) 1006 fprintf(stderr, 1007 _("Invalid filesystem option set: %s\n"), 1008 features); 1009 else if (type_err & E2P_FEATURE_NEGATE_FLAG) 1010 fprintf(stderr, _("Clearing filesystem feature '%s' " 1011 "not supported.\n"), 1012 e2p_feature2string(type_err & 1013 E2P_FEATURE_TYPE_MASK, 1014 mask_err)); 1015 else 1016 fprintf(stderr, _("Setting filesystem feature '%s' " 1017 "not supported.\n"), 1018 e2p_feature2string(type_err, mask_err)); 1019 return 1; 1020 } 1021 1022 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 1023 if ((mount_flags & EXT2_MF_MOUNTED) && 1024 !(mount_flags & EXT2_MF_READONLY)) { 1025 fputs(_("The has_journal feature may only be " 1026 "cleared when the filesystem is\n" 1027 "unmounted or mounted " 1028 "read-only.\n"), stderr); 1029 return 1; 1030 } 1031 if (ext2fs_has_feature_journal_needs_recovery(sb) && 1032 f_flag < 2) { 1033 fputs(_("The needs_recovery flag is set. " 1034 "Please run e2fsck before clearing\n" 1035 "the has_journal flag.\n"), stderr); 1036 return 1; 1037 } 1038 if (sb->s_journal_inum) { 1039 if (remove_journal_inode(fs)) 1040 return 1; 1041 } 1042 if (sb->s_journal_dev) { 1043 if (remove_journal_device(fs)) 1044 return 1; 1045 } 1046 } 1047 1048 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT, 1049 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) { 1050 if (ext2fs_has_feature_meta_bg(sb)) { 1051 fputs(_("Setting filesystem feature 'sparse_super' " 1052 "not supported\nfor filesystems with " 1053 "the meta_bg feature enabled.\n"), 1054 stderr); 1055 return 1; 1056 } 1057 } 1058 1059 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) { 1060 int error; 1061 1062 if ((mount_flags & EXT2_MF_MOUNTED) || 1063 (mount_flags & EXT2_MF_READONLY)) { 1064 fputs(_("The multiple mount protection feature can't\n" 1065 "be set if the filesystem is mounted or\n" 1066 "read-only.\n"), stderr); 1067 return 1; 1068 } 1069 1070 error = ext2fs_mmp_init(fs); 1071 if (error) { 1072 fputs(_("\nError while enabling multiple mount " 1073 "protection feature."), stderr); 1074 return 1; 1075 } 1076 1077 /* 1078 * We want to update group desc with the new free blocks count 1079 */ 1080 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 1081 1082 printf(_("Multiple mount protection has been enabled " 1083 "with update interval %ds.\n"), 1084 sb->s_mmp_update_interval); 1085 } 1086 1087 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) { 1088 int error; 1089 1090 if (mount_flags & EXT2_MF_READONLY) { 1091 fputs(_("The multiple mount protection feature cannot\n" 1092 "be disabled if the filesystem is readonly.\n"), 1093 stderr); 1094 return 1; 1095 } 1096 1097 error = ext2fs_read_bitmaps(fs); 1098 if (error) { 1099 fputs(_("Error while reading bitmaps\n"), stderr); 1100 return 1; 1101 } 1102 1103 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL); 1104 if (error) { 1105 struct mmp_struct *mmp_cmp = fs->mmp_cmp; 1106 1107 if (error == EXT2_ET_MMP_MAGIC_INVALID) 1108 printf(_("Magic number in MMP block does not " 1109 "match. expected: %x, actual: %x\n"), 1110 EXT4_MMP_MAGIC, mmp_cmp->mmp_magic); 1111 else 1112 com_err(program_name, error, "%s", 1113 _("while reading MMP block.")); 1114 goto mmp_error; 1115 } 1116 1117 /* We need to force out the group descriptors as well */ 1118 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 1119 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1); 1120 mmp_error: 1121 sb->s_mmp_block = 0; 1122 sb->s_mmp_update_interval = 0; 1123 } 1124 1125 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 1126 /* 1127 * If adding a journal flag, let the create journal 1128 * code below handle setting the flag and creating the 1129 * journal. We supply a default size if necessary. 1130 */ 1131 if (!journal_size) 1132 journal_size = -1; 1133 ext2fs_clear_feature_journal(sb); 1134 } 1135 1136 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) { 1137 if (!sb->s_def_hash_version) 1138 sb->s_def_hash_version = EXT2_HASH_HALF_MD4; 1139 if (uuid_is_null((unsigned char *) sb->s_hash_seed)) 1140 uuid_generate((unsigned char *) sb->s_hash_seed); 1141 } 1142 1143 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) { 1144 if (ext2fs_check_desc(fs)) { 1145 fputs(_("Clearing the flex_bg flag would " 1146 "cause the the filesystem to be\n" 1147 "inconsistent.\n"), stderr); 1148 return 1; 1149 } 1150 } 1151 1152 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT, 1153 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) { 1154 if ((mount_flags & EXT2_MF_MOUNTED) && 1155 !(mount_flags & EXT2_MF_READONLY)) { 1156 fputs(_("The huge_file feature may only be " 1157 "cleared when the filesystem is\n" 1158 "unmounted or mounted " 1159 "read-only.\n"), stderr); 1160 return 1; 1161 } 1162 } 1163 1164 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT, 1165 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) { 1166 check_fsck_needed(fs, 1167 _("Enabling checksums could take some time.")); 1168 if (mount_flags & EXT2_MF_MOUNTED) { 1169 fputs(_("Cannot enable metadata_csum on a mounted " 1170 "filesystem!\n"), stderr); 1171 exit(1); 1172 } 1173 if (!ext2fs_has_feature_extents(fs->super)) 1174 printf("%s", 1175 _("Extents are not enabled. The file extent " 1176 "tree can be checksummed, whereas block maps " 1177 "cannot. Not enabling extents reduces the " 1178 "coverage of metadata checksumming. " 1179 "Re-run with -O extent to rectify.\n")); 1180 if (!ext2fs_has_feature_64bit(fs->super)) 1181 printf("%s", 1182 _("64-bit filesystem support is not enabled. " 1183 "The larger fields afforded by this feature " 1184 "enable full-strength checksumming. " 1185 "Run resize2fs -b to rectify.\n")); 1186 rewrite_checksums = 1; 1187 /* metadata_csum supersedes uninit_bg */ 1188 ext2fs_clear_feature_gdt_csum(fs->super); 1189 1190 /* if uninit_bg was previously off, rewrite group desc */ 1191 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] & 1192 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) 1193 enable_uninit_bg(fs); 1194 1195 /* 1196 * Since metadata_csum supersedes uninit_bg, pretend like 1197 * uninit_bg has been off all along. 1198 */ 1199 old_features[E2P_FEATURE_RO_INCOMPAT] &= 1200 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM; 1201 } 1202 1203 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT, 1204 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) { 1205 __u32 test_features[3]; 1206 1207 check_fsck_needed(fs, 1208 _("Disabling checksums could take some time.")); 1209 if (mount_flags & EXT2_MF_MOUNTED) { 1210 fputs(_("Cannot disable metadata_csum on a mounted " 1211 "filesystem!\n"), stderr); 1212 exit(1); 1213 } 1214 rewrite_checksums = 1; 1215 1216 /* Enable uninit_bg unless the user expressly turned it off */ 1217 memcpy(test_features, old_features, sizeof(test_features)); 1218 test_features[E2P_FEATURE_RO_INCOMPAT] |= 1219 EXT4_FEATURE_RO_COMPAT_GDT_CSUM; 1220 e2p_edit_feature2(features, test_features, ok_features, 1221 clear_ok_features, NULL, NULL); 1222 if (test_features[E2P_FEATURE_RO_INCOMPAT] & 1223 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) 1224 ext2fs_set_feature_gdt_csum(fs->super); 1225 1226 /* 1227 * If we're turning off metadata_csum and not turning on 1228 * uninit_bg, rewrite group desc. 1229 */ 1230 if (!ext2fs_has_feature_gdt_csum(fs->super)) { 1231 err = disable_uninit_bg(fs, 1232 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM); 1233 if (err) 1234 return 1; 1235 } else 1236 /* 1237 * metadata_csum previously provided uninit_bg, so if 1238 * we're also setting the uninit_bg feature bit, 1239 * pretend like it was previously enabled. Checksums 1240 * will be rewritten with crc16 later. 1241 */ 1242 old_features[E2P_FEATURE_RO_INCOMPAT] |= 1243 EXT4_FEATURE_RO_COMPAT_GDT_CSUM; 1244 fs->super->s_checksum_seed = 0; 1245 ext2fs_clear_feature_csum_seed(fs->super); 1246 } 1247 1248 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT, 1249 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) { 1250 /* Do not enable uninit_bg when metadata_csum enabled */ 1251 if (ext2fs_has_feature_metadata_csum(fs->super)) 1252 ext2fs_clear_feature_gdt_csum(fs->super); 1253 else 1254 enable_uninit_bg(fs); 1255 } 1256 1257 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT, 1258 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) { 1259 err = disable_uninit_bg(fs, 1260 EXT4_FEATURE_RO_COMPAT_GDT_CSUM); 1261 if (err) 1262 return 1; 1263 } 1264 1265 /* 1266 * We don't actually toggle 64bit; resize2fs does that. But this 1267 * must come after the metadata_csum feature_on so that it won't 1268 * complain about the lack of 64bit. 1269 */ 1270 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, 1271 EXT4_FEATURE_INCOMPAT_64BIT)) { 1272 if (mount_flags & EXT2_MF_MOUNTED) { 1273 fprintf(stderr, _("Cannot enable 64-bit mode " 1274 "while mounted!\n")); 1275 exit(1); 1276 } 1277 ext2fs_clear_feature_64bit(sb); 1278 feature_64bit = 1; 1279 } 1280 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, 1281 EXT4_FEATURE_INCOMPAT_64BIT)) { 1282 if (mount_flags & EXT2_MF_MOUNTED) { 1283 fprintf(stderr, _("Cannot disable 64-bit mode " 1284 "while mounted!\n")); 1285 exit(1); 1286 } 1287 ext2fs_set_feature_64bit(sb); 1288 feature_64bit = -1; 1289 } 1290 1291 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT, 1292 EXT4_FEATURE_RO_COMPAT_QUOTA)) { 1293 /* 1294 * Set the Q_flag here and handle the quota options in the code 1295 * below. 1296 */ 1297 if (!Q_flag) { 1298 Q_flag = 1; 1299 /* Enable usr/grp quota by default */ 1300 for (qtype = 0; qtype < MAXQUOTAS; qtype++) { 1301 if (qtype != PRJQUOTA) 1302 quota_enable[qtype] = QOPT_ENABLE; 1303 else 1304 quota_enable[qtype] = QOPT_DISABLE; 1305 } 1306 } 1307 ext2fs_clear_feature_quota(sb); 1308 } 1309 1310 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT, 1311 EXT4_FEATURE_RO_COMPAT_PROJECT)) { 1312 if (!Q_flag && !ext2fs_has_feature_quota(sb)) 1313 fputs(_("\nWarning: enabled project without quota together\n"), 1314 stderr); 1315 Q_flag = 1; 1316 quota_enable[PRJQUOTA] = QOPT_ENABLE; 1317 } 1318 1319 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT, 1320 EXT4_FEATURE_RO_COMPAT_QUOTA)) { 1321 /* 1322 * Set the Q_flag here and handle the quota options in the code 1323 * below. 1324 */ 1325 if (Q_flag) 1326 fputs(_("\nWarning: '^quota' option overrides '-Q'" 1327 "arguments.\n"), stderr); 1328 Q_flag = 1; 1329 /* Disable all quota by default */ 1330 for (qtype = 0; qtype < MAXQUOTAS; qtype++) 1331 quota_enable[qtype] = QOPT_DISABLE; 1332 } 1333 1334 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) { 1335 fs->super->s_encrypt_algos[0] = 1336 EXT4_ENCRYPTION_MODE_AES_256_XTS; 1337 fs->super->s_encrypt_algos[1] = 1338 EXT4_ENCRYPTION_MODE_AES_256_CTS; 1339 } 1340 1341 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, 1342 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) { 1343 if (!ext2fs_has_feature_metadata_csum(sb)) { 1344 fputs(_("Setting feature 'metadata_csum_seed' " 1345 "is only supported\non filesystems with " 1346 "the metadata_csum feature enabled.\n"), 1347 stderr); 1348 return 1; 1349 } 1350 try_confirm_csum_seed_support(); 1351 fs->super->s_checksum_seed = fs->csum_seed; 1352 } 1353 1354 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, 1355 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) { 1356 __le32 uuid_seed; 1357 1358 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid, 1359 sizeof(fs->super->s_uuid)); 1360 if (fs->super->s_checksum_seed != uuid_seed && 1361 (mount_flags & EXT2_MF_MOUNTED)) { 1362 fputs(_("UUID has changed since enabling " 1363 "metadata_csum. Filesystem must be unmounted " 1364 "\nto safely rewrite all metadata to " 1365 "match the new UUID.\n"), stderr); 1366 return 1; 1367 } 1368 1369 rewrite_checksums = 1; 1370 } 1371 1372 if (sb->s_rev_level == EXT2_GOOD_OLD_REV && 1373 (sb->s_feature_compat || sb->s_feature_ro_compat || 1374 sb->s_feature_incompat)) 1375 ext2fs_update_dynamic_rev(fs); 1376 1377 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT, 1378 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) || 1379 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT, 1380 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) || 1381 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT, 1382 EXT2_FEATURE_INCOMPAT_FILETYPE) || 1383 FEATURE_CHANGED(E2P_FEATURE_COMPAT, 1384 EXT2_FEATURE_COMPAT_RESIZE_INODE) || 1385 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT, 1386 EXT2_FEATURE_RO_COMPAT_LARGE_FILE)) 1387 request_fsck_afterwards(fs); 1388 1389 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) || 1390 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) || 1391 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat)) 1392 ext2fs_mark_super_dirty(fs); 1393 1394 return 0; 1395 } 1396 1397 /* 1398 * Add a journal to the filesystem. 1399 */ 1400 static int add_journal(ext2_filsys fs) 1401 { 1402 unsigned long journal_blocks; 1403 errcode_t retval; 1404 ext2_filsys jfs; 1405 io_manager io_ptr; 1406 1407 if (ext2fs_has_feature_journal(fs->super)) { 1408 fputs(_("The filesystem already has a journal.\n"), stderr); 1409 goto err; 1410 } 1411 if (journal_device) { 1412 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV, 1413 NULL)) 1414 proceed_question(-1); 1415 check_mount(journal_device, 0, _("journal")); 1416 #ifdef CONFIG_TESTIO_DEBUG 1417 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) { 1418 io_ptr = test_io_manager; 1419 test_io_backing_manager = unix_io_manager; 1420 } else 1421 #endif 1422 io_ptr = unix_io_manager; 1423 retval = ext2fs_open(journal_device, EXT2_FLAG_RW| 1424 EXT2_FLAG_JOURNAL_DEV_OK, 0, 1425 fs->blocksize, io_ptr, &jfs); 1426 if (retval) { 1427 com_err(program_name, retval, 1428 _("\n\twhile trying to open journal on %s\n"), 1429 journal_device); 1430 goto err; 1431 } 1432 printf(_("Creating journal on device %s: "), 1433 journal_device); 1434 fflush(stdout); 1435 1436 retval = ext2fs_add_journal_device(fs, jfs); 1437 ext2fs_close_free(&jfs); 1438 if (retval) { 1439 com_err(program_name, retval, 1440 _("while adding filesystem to journal on %s"), 1441 journal_device); 1442 goto err; 1443 } 1444 fputs(_("done\n"), stdout); 1445 } else if (journal_size) { 1446 fputs(_("Creating journal inode: "), stdout); 1447 fflush(stdout); 1448 journal_blocks = figure_journal_size(journal_size, fs); 1449 1450 if (journal_location_string) 1451 journal_location = 1452 parse_num_blocks2(journal_location_string, 1453 fs->super->s_log_block_size); 1454 retval = ext2fs_add_journal_inode2(fs, journal_blocks, 1455 journal_location, 1456 journal_flags); 1457 if (retval) { 1458 fprintf(stderr, "\n"); 1459 com_err(program_name, retval, "%s", 1460 _("\n\twhile trying to create journal file")); 1461 return retval; 1462 } else 1463 fputs(_("done\n"), stdout); 1464 /* 1465 * If the filesystem wasn't mounted, we need to force 1466 * the block group descriptors out. 1467 */ 1468 if ((mount_flags & EXT2_MF_MOUNTED) == 0) 1469 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 1470 } 1471 print_check_message(fs->super->s_max_mnt_count, 1472 fs->super->s_checkinterval); 1473 return 0; 1474 1475 err: 1476 free(journal_device); 1477 return 1; 1478 } 1479 1480 static void handle_quota_options(ext2_filsys fs) 1481 { 1482 errcode_t retval; 1483 quota_ctx_t qctx; 1484 ext2_ino_t qf_ino; 1485 enum quota_type qtype; 1486 int enable = 0; 1487 1488 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) 1489 if (quota_enable[qtype] != 0) 1490 break; 1491 if (qtype == MAXQUOTAS) 1492 /* Nothing to do. */ 1493 return; 1494 1495 retval = quota_init_context(&qctx, fs, QUOTA_ALL_BIT); 1496 if (retval) { 1497 com_err(program_name, retval, 1498 _("while initializing quota context in support library")); 1499 exit(1); 1500 } 1501 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) { 1502 if (quota_enable[qtype] == QOPT_ENABLE) { 1503 enable = 1; 1504 break; 1505 } 1506 } 1507 if (enable) 1508 quota_compute_usage(qctx); 1509 1510 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) { 1511 if (quota_enable[qtype] == QOPT_ENABLE && 1512 *quota_sb_inump(fs->super, qtype) == 0) { 1513 if ((qf_ino = quota_file_exists(fs, qtype)) > 0) { 1514 retval = quota_update_limits(qctx, qf_ino, 1515 qtype); 1516 if (retval) { 1517 com_err(program_name, retval, 1518 _("while updating quota limits (%d)"), 1519 qtype); 1520 exit(1); 1521 } 1522 } 1523 retval = quota_write_inode(qctx, 1 << qtype); 1524 if (retval) { 1525 com_err(program_name, retval, 1526 _("while writing quota file (%d)"), 1527 qtype); 1528 exit(1); 1529 } 1530 } else if (quota_enable[qtype] == QOPT_DISABLE) { 1531 retval = quota_remove_inode(fs, qtype); 1532 if (retval) { 1533 com_err(program_name, retval, 1534 _("while removing quota file (%d)"), 1535 qtype); 1536 exit(1); 1537 } 1538 } 1539 } 1540 1541 quota_release_context(&qctx); 1542 1543 if (enable) { 1544 ext2fs_set_feature_quota(fs->super); 1545 ext2fs_mark_super_dirty(fs); 1546 } else { 1547 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) 1548 if (*quota_sb_inump(fs->super, qtype) != 0) 1549 break; 1550 if (qtype == MAXQUOTAS) { 1551 fs->super->s_feature_ro_compat &= 1552 ~EXT4_FEATURE_RO_COMPAT_QUOTA; 1553 ext2fs_mark_super_dirty(fs); 1554 } 1555 } 1556 1557 return; 1558 } 1559 1560 static int option_handle_function(char *token) 1561 { 1562 if (strncmp(token, "usr", 3) == 0) { 1563 quota_enable[USRQUOTA] = QOPT_ENABLE; 1564 } else if (strncmp(token, "^usr", 4) == 0) { 1565 quota_enable[USRQUOTA] = QOPT_DISABLE; 1566 } else if (strncmp(token, "grp", 3) == 0) { 1567 quota_enable[GRPQUOTA] = QOPT_ENABLE; 1568 } else if (strncmp(token, "^grp", 4) == 0) { 1569 quota_enable[GRPQUOTA] = QOPT_DISABLE; 1570 } else if (strncmp(token, "prj", 3) == 0) { 1571 quota_enable[PRJQUOTA] = QOPT_ENABLE; 1572 } else if (strncmp(token, "^prj", 4) == 0) { 1573 quota_enable[PRJQUOTA] = QOPT_DISABLE; 1574 } else { 1575 fputs(_("\nBad quota options specified.\n\n" 1576 "Following valid quota options are available " 1577 "(pass by separating with comma):\n" 1578 "\t[^]usr[quota]\n" 1579 "\t[^]grp[quota]\n" 1580 "\t[^]prj[quota]\n" 1581 "\n\n"), stderr); 1582 return 1; 1583 } 1584 return 0; 1585 } 1586 1587 static void parse_e2label_options(int argc, char ** argv) 1588 { 1589 if ((argc < 2) || (argc > 3)) { 1590 fputs(_("Usage: e2label device [newlabel]\n"), stderr); 1591 exit(1); 1592 } 1593 io_options = strchr(argv[1], '?'); 1594 if (io_options) 1595 *io_options++ = 0; 1596 device_name = blkid_get_devname(NULL, argv[1], NULL); 1597 if (!device_name) { 1598 com_err("e2label", 0, _("Unable to resolve '%s'"), 1599 argv[1]); 1600 exit(1); 1601 } 1602 open_flag = EXT2_FLAG_JOURNAL_DEV_OK; 1603 if (argc == 3) { 1604 open_flag |= EXT2_FLAG_RW; 1605 L_flag = 1; 1606 new_label = argv[2]; 1607 } else 1608 print_label++; 1609 } 1610 1611 static time_t parse_time(char *str) 1612 { 1613 struct tm ts; 1614 1615 if (strcmp(str, "now") == 0) { 1616 return (time(0)); 1617 } 1618 memset(&ts, 0, sizeof(ts)); 1619 #ifdef HAVE_STRPTIME 1620 strptime(str, "%Y%m%d%H%M%S", &ts); 1621 #else 1622 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon, 1623 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec); 1624 ts.tm_year -= 1900; 1625 ts.tm_mon -= 1; 1626 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 || 1627 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 || 1628 ts.tm_min > 59 || ts.tm_sec > 61) 1629 ts.tm_mday = 0; 1630 #endif 1631 if (ts.tm_mday == 0) { 1632 com_err(program_name, 0, 1633 _("Couldn't parse date/time specifier: %s"), 1634 str); 1635 usage(); 1636 } 1637 ts.tm_isdst = -1; 1638 return (mktime(&ts)); 1639 } 1640 1641 static void parse_tune2fs_options(int argc, char **argv) 1642 { 1643 int c; 1644 char *tmp; 1645 struct group *gr; 1646 struct passwd *pw; 1647 int ret; 1648 char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:"; 1649 1650 open_flag = 0; 1651 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE); 1652 while ((c = getopt(argc, argv, optstring)) != EOF) 1653 switch (c) { 1654 case 'c': 1655 max_mount_count = strtol(optarg, &tmp, 0); 1656 if (*tmp || max_mount_count > 16000) { 1657 com_err(program_name, 0, 1658 _("bad mounts count - %s"), 1659 optarg); 1660 usage(); 1661 } 1662 if (max_mount_count == 0) 1663 max_mount_count = -1; 1664 c_flag = 1; 1665 open_flag = EXT2_FLAG_RW; 1666 break; 1667 case 'C': 1668 mount_count = strtoul(optarg, &tmp, 0); 1669 if (*tmp || mount_count > 16000) { 1670 com_err(program_name, 0, 1671 _("bad mounts count - %s"), 1672 optarg); 1673 usage(); 1674 } 1675 C_flag = 1; 1676 open_flag = EXT2_FLAG_RW; 1677 break; 1678 case 'e': 1679 if (strcmp(optarg, "continue") == 0) 1680 errors = EXT2_ERRORS_CONTINUE; 1681 else if (strcmp(optarg, "remount-ro") == 0) 1682 errors = EXT2_ERRORS_RO; 1683 else if (strcmp(optarg, "panic") == 0) 1684 errors = EXT2_ERRORS_PANIC; 1685 else { 1686 com_err(program_name, 0, 1687 _("bad error behavior - %s"), 1688 optarg); 1689 usage(); 1690 } 1691 e_flag = 1; 1692 open_flag = EXT2_FLAG_RW; 1693 break; 1694 case 'E': 1695 extended_cmd = optarg; 1696 open_flag |= EXT2_FLAG_RW; 1697 break; 1698 case 'f': /* Force */ 1699 f_flag++; 1700 break; 1701 case 'g': 1702 resgid = strtoul(optarg, &tmp, 0); 1703 if (*tmp) { 1704 gr = getgrnam(optarg); 1705 if (gr == NULL) 1706 tmp = optarg; 1707 else { 1708 resgid = gr->gr_gid; 1709 *tmp = 0; 1710 } 1711 } 1712 if (*tmp) { 1713 com_err(program_name, 0, 1714 _("bad gid/group name - %s"), 1715 optarg); 1716 usage(); 1717 } 1718 g_flag = 1; 1719 open_flag = EXT2_FLAG_RW; 1720 break; 1721 case 'i': 1722 interval = strtoul(optarg, &tmp, 0); 1723 switch (*tmp) { 1724 case 's': 1725 tmp++; 1726 break; 1727 case '\0': 1728 case 'd': 1729 case 'D': /* days */ 1730 interval *= 86400; 1731 if (*tmp != '\0') 1732 tmp++; 1733 break; 1734 case 'm': 1735 case 'M': /* months! */ 1736 interval *= 86400 * 30; 1737 tmp++; 1738 break; 1739 case 'w': 1740 case 'W': /* weeks */ 1741 interval *= 86400 * 7; 1742 tmp++; 1743 break; 1744 } 1745 if (*tmp) { 1746 com_err(program_name, 0, 1747 _("bad interval - %s"), optarg); 1748 usage(); 1749 } 1750 i_flag = 1; 1751 open_flag = EXT2_FLAG_RW; 1752 break; 1753 case 'j': 1754 if (!journal_size) 1755 journal_size = -1; 1756 open_flag = EXT2_FLAG_RW; 1757 break; 1758 case 'J': 1759 parse_journal_opts(optarg); 1760 open_flag = EXT2_FLAG_RW; 1761 break; 1762 case 'l': 1763 l_flag = 1; 1764 break; 1765 case 'L': 1766 new_label = optarg; 1767 L_flag = 1; 1768 open_flag |= EXT2_FLAG_RW | 1769 EXT2_FLAG_JOURNAL_DEV_OK; 1770 break; 1771 case 'm': 1772 reserved_ratio = strtod(optarg, &tmp); 1773 if (*tmp || reserved_ratio > 50 || 1774 reserved_ratio < 0) { 1775 com_err(program_name, 0, 1776 _("bad reserved block ratio - %s"), 1777 optarg); 1778 usage(); 1779 } 1780 m_flag = 1; 1781 open_flag = EXT2_FLAG_RW; 1782 break; 1783 case 'M': 1784 new_last_mounted = optarg; 1785 M_flag = 1; 1786 open_flag = EXT2_FLAG_RW; 1787 break; 1788 case 'o': 1789 if (mntopts_cmd) { 1790 com_err(program_name, 0, "%s", 1791 _("-o may only be specified once")); 1792 usage(); 1793 } 1794 mntopts_cmd = optarg; 1795 open_flag = EXT2_FLAG_RW; 1796 break; 1797 case 'O': 1798 if (features_cmd) { 1799 com_err(program_name, 0, "%s", 1800 _("-O may only be specified once")); 1801 usage(); 1802 } 1803 features_cmd = optarg; 1804 open_flag = EXT2_FLAG_RW; 1805 break; 1806 case 'Q': 1807 Q_flag = 1; 1808 ret = parse_quota_opts(optarg, option_handle_function); 1809 if (ret) 1810 exit(1); 1811 open_flag = EXT2_FLAG_RW; 1812 break; 1813 case 'r': 1814 reserved_blocks = strtoul(optarg, &tmp, 0); 1815 if (*tmp) { 1816 com_err(program_name, 0, 1817 _("bad reserved blocks count - %s"), 1818 optarg); 1819 usage(); 1820 } 1821 r_flag = 1; 1822 open_flag = EXT2_FLAG_RW; 1823 break; 1824 case 's': /* Deprecated */ 1825 s_flag = atoi(optarg); 1826 open_flag = EXT2_FLAG_RW; 1827 break; 1828 case 'T': 1829 T_flag = 1; 1830 last_check_time = parse_time(optarg); 1831 open_flag = EXT2_FLAG_RW; 1832 break; 1833 case 'u': 1834 resuid = strtoul(optarg, &tmp, 0); 1835 if (*tmp) { 1836 pw = getpwnam(optarg); 1837 if (pw == NULL) 1838 tmp = optarg; 1839 else { 1840 resuid = pw->pw_uid; 1841 *tmp = 0; 1842 } 1843 } 1844 if (*tmp) { 1845 com_err(program_name, 0, 1846 _("bad uid/user name - %s"), 1847 optarg); 1848 usage(); 1849 } 1850 u_flag = 1; 1851 open_flag = EXT2_FLAG_RW; 1852 break; 1853 case 'U': 1854 new_UUID = optarg; 1855 U_flag = 1; 1856 open_flag = EXT2_FLAG_RW | 1857 EXT2_FLAG_JOURNAL_DEV_OK; 1858 break; 1859 case 'I': 1860 new_inode_size = strtoul(optarg, &tmp, 0); 1861 if (*tmp) { 1862 com_err(program_name, 0, 1863 _("bad inode size - %s"), 1864 optarg); 1865 usage(); 1866 } 1867 if (!((new_inode_size & 1868 (new_inode_size - 1)) == 0)) { 1869 com_err(program_name, 0, 1870 _("Inode size must be a " 1871 "power of two- %s"), 1872 optarg); 1873 usage(); 1874 } 1875 open_flag = EXT2_FLAG_RW; 1876 I_flag = 1; 1877 break; 1878 case 'z': 1879 undo_file = optarg; 1880 break; 1881 default: 1882 usage(); 1883 } 1884 if (optind < argc - 1 || optind == argc) 1885 usage(); 1886 if (!open_flag && !l_flag) 1887 usage(); 1888 io_options = strchr(argv[optind], '?'); 1889 if (io_options) 1890 *io_options++ = 0; 1891 device_name = blkid_get_devname(NULL, argv[optind], NULL); 1892 if (!device_name) { 1893 com_err(program_name, 0, _("Unable to resolve '%s'"), 1894 argv[optind]); 1895 exit(1); 1896 } 1897 } 1898 1899 #ifdef CONFIG_BUILD_FINDFS 1900 void do_findfs(int argc, char **argv) 1901 { 1902 char *dev; 1903 1904 if ((argc != 2) || 1905 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) { 1906 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n"); 1907 exit(2); 1908 } 1909 dev = blkid_get_devname(NULL, argv[1], NULL); 1910 if (!dev) { 1911 com_err("findfs", 0, _("Unable to resolve '%s'"), 1912 argv[1]); 1913 exit(1); 1914 } 1915 puts(dev); 1916 exit(0); 1917 } 1918 #endif 1919 1920 static int parse_extended_opts(ext2_filsys fs, const char *opts) 1921 { 1922 char *buf, *token, *next, *p, *arg; 1923 int len, hash_alg; 1924 int r_usage = 0; 1925 1926 len = strlen(opts); 1927 buf = malloc(len+1); 1928 if (!buf) { 1929 fprintf(stderr, "%s", 1930 _("Couldn't allocate memory to parse options!\n")); 1931 return 1; 1932 } 1933 strcpy(buf, opts); 1934 for (token = buf; token && *token; token = next) { 1935 p = strchr(token, ','); 1936 next = 0; 1937 if (p) { 1938 *p = 0; 1939 next = p+1; 1940 } 1941 arg = strchr(token, '='); 1942 if (arg) { 1943 *arg = 0; 1944 arg++; 1945 } 1946 if (strcmp(token, "clear-mmp") == 0 || 1947 strcmp(token, "clear_mmp") == 0) { 1948 clear_mmp = 1; 1949 } else if (strcmp(token, "mmp_update_interval") == 0) { 1950 unsigned long intv; 1951 if (!arg) { 1952 r_usage++; 1953 continue; 1954 } 1955 intv = strtoul(arg, &p, 0); 1956 if (*p) { 1957 fprintf(stderr, 1958 _("Invalid mmp_update_interval: %s\n"), 1959 arg); 1960 r_usage++; 1961 continue; 1962 } 1963 if (intv == 0) { 1964 intv = EXT4_MMP_UPDATE_INTERVAL; 1965 } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) { 1966 fprintf(stderr, 1967 _("mmp_update_interval too big: %lu\n"), 1968 intv); 1969 r_usage++; 1970 continue; 1971 } 1972 printf(P_("Setting multiple mount protection update " 1973 "interval to %lu second\n", 1974 "Setting multiple mount protection update " 1975 "interval to %lu seconds\n", intv), 1976 intv); 1977 fs->super->s_mmp_update_interval = intv; 1978 ext2fs_mark_super_dirty(fs); 1979 } else if (!strcmp(token, "test_fs")) { 1980 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS; 1981 printf("Setting test filesystem flag\n"); 1982 ext2fs_mark_super_dirty(fs); 1983 } else if (!strcmp(token, "^test_fs")) { 1984 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS; 1985 printf("Clearing test filesystem flag\n"); 1986 ext2fs_mark_super_dirty(fs); 1987 } else if (strcmp(token, "stride") == 0) { 1988 if (!arg) { 1989 r_usage++; 1990 continue; 1991 } 1992 stride = strtoul(arg, &p, 0); 1993 if (*p) { 1994 fprintf(stderr, 1995 _("Invalid RAID stride: %s\n"), 1996 arg); 1997 r_usage++; 1998 continue; 1999 } 2000 stride_set = 1; 2001 } else if (strcmp(token, "stripe-width") == 0 || 2002 strcmp(token, "stripe_width") == 0) { 2003 if (!arg) { 2004 r_usage++; 2005 continue; 2006 } 2007 stripe_width = strtoul(arg, &p, 0); 2008 if (*p) { 2009 fprintf(stderr, 2010 _("Invalid RAID stripe-width: %s\n"), 2011 arg); 2012 r_usage++; 2013 continue; 2014 } 2015 stripe_width_set = 1; 2016 } else if (strcmp(token, "hash_alg") == 0 || 2017 strcmp(token, "hash-alg") == 0) { 2018 if (!arg) { 2019 r_usage++; 2020 continue; 2021 } 2022 hash_alg = e2p_string2hash(arg); 2023 if (hash_alg < 0) { 2024 fprintf(stderr, 2025 _("Invalid hash algorithm: %s\n"), 2026 arg); 2027 r_usage++; 2028 continue; 2029 } 2030 fs->super->s_def_hash_version = hash_alg; 2031 printf(_("Setting default hash algorithm " 2032 "to %s (%d)\n"), 2033 arg, hash_alg); 2034 ext2fs_mark_super_dirty(fs); 2035 } else if (!strcmp(token, "mount_opts")) { 2036 if (!arg) { 2037 r_usage++; 2038 continue; 2039 } 2040 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) { 2041 fprintf(stderr, 2042 "Extended mount options too long\n"); 2043 continue; 2044 } 2045 ext_mount_opts = strdup(arg); 2046 } else 2047 r_usage++; 2048 } 2049 if (r_usage) { 2050 fprintf(stderr, "%s", _("\nBad options specified.\n\n" 2051 "Extended options are separated by commas, " 2052 "and may take an argument which\n" 2053 "\tis set off by an equals ('=') sign.\n\n" 2054 "Valid extended options are:\n" 2055 "\tclear_mmp\n" 2056 "\thash_alg=<hash algorithm>\n" 2057 "\tmount_opts=<extended default mount options>\n" 2058 "\tstride=<RAID per-disk chunk size in blocks>\n" 2059 "\tstripe_width=<RAID stride*data disks in blocks>\n" 2060 "\ttest_fs\n" 2061 "\t^test_fs\n")); 2062 free(buf); 2063 return 1; 2064 } 2065 free(buf); 2066 2067 return 0; 2068 } 2069 2070 /* 2071 * Fill in the block bitmap bmap with the information regarding the 2072 * blocks to be moved 2073 */ 2074 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp, 2075 ext2fs_block_bitmap bmap) 2076 { 2077 dgrp_t i; 2078 int retval; 2079 ext2_badblocks_list bb_list = 0; 2080 blk64_t j, needed_blocks = 0; 2081 blk64_t start_blk, end_blk; 2082 2083 retval = ext2fs_read_bb_inode(fs, &bb_list); 2084 if (retval) 2085 return retval; 2086 2087 for (i = 0; i < fs->group_desc_count; i++) { 2088 start_blk = ext2fs_inode_table_loc(fs, i) + 2089 fs->inode_blocks_per_group; 2090 2091 end_blk = ext2fs_inode_table_loc(fs, i) + 2092 new_ino_blks_per_grp; 2093 2094 for (j = start_blk; j < end_blk; j++) { 2095 if (ext2fs_test_block_bitmap2(fs->block_map, j)) { 2096 /* 2097 * IF the block is a bad block we fail 2098 */ 2099 if (ext2fs_badblocks_list_test(bb_list, j)) { 2100 ext2fs_badblocks_list_free(bb_list); 2101 return ENOSPC; 2102 } 2103 2104 ext2fs_mark_block_bitmap2(bmap, j); 2105 } else { 2106 /* 2107 * We are going to use this block for 2108 * inode table. So mark them used. 2109 */ 2110 ext2fs_mark_block_bitmap2(fs->block_map, j); 2111 } 2112 } 2113 needed_blocks += end_blk - start_blk; 2114 } 2115 2116 ext2fs_badblocks_list_free(bb_list); 2117 if (needed_blocks > ext2fs_free_blocks_count(fs->super)) 2118 return ENOSPC; 2119 2120 return 0; 2121 } 2122 2123 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk) 2124 { 2125 dgrp_t group; 2126 group = ext2fs_group_of_blk2(fs, blk); 2127 if (ext2fs_block_bitmap_loc(fs, group) == blk) 2128 return 1; 2129 if (ext2fs_inode_bitmap_loc(fs, group) == blk) 2130 return 1; 2131 return 0; 2132 } 2133 2134 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk) 2135 { 2136 blk64_t start_blk, end_blk; 2137 start_blk = fs->super->s_first_data_block + 2138 EXT2_GROUPS_TO_BLOCKS(fs->super, group); 2139 /* 2140 * We cannot get new block beyond end_blk for for the last block group 2141 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group 2142 */ 2143 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super); 2144 if (blk >= start_blk && blk <= end_blk) 2145 return 1; 2146 return 0; 2147 } 2148 2149 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap) 2150 { 2151 2152 char *buf; 2153 dgrp_t group = 0; 2154 errcode_t retval; 2155 int meta_data = 0; 2156 blk64_t blk, new_blk, goal; 2157 struct blk_move *bmv; 2158 2159 retval = ext2fs_get_mem(fs->blocksize, &buf); 2160 if (retval) 2161 return retval; 2162 2163 for (new_blk = blk = fs->super->s_first_data_block; 2164 blk < ext2fs_blocks_count(fs->super); blk++) { 2165 if (!ext2fs_test_block_bitmap2(bmap, blk)) 2166 continue; 2167 2168 if (ext2fs_is_meta_block(fs, blk)) { 2169 /* 2170 * If the block is mapping a fs meta data block 2171 * like group desc/block bitmap/inode bitmap. We 2172 * should find a block in the same group and fix 2173 * the respective fs metadata pointers. Otherwise 2174 * fail 2175 */ 2176 group = ext2fs_group_of_blk2(fs, blk); 2177 goal = ext2fs_group_first_block2(fs, group); 2178 meta_data = 1; 2179 2180 } else { 2181 goal = new_blk; 2182 } 2183 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk); 2184 if (retval) 2185 goto err_out; 2186 2187 /* new fs meta data block should be in the same group */ 2188 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) { 2189 retval = ENOSPC; 2190 goto err_out; 2191 } 2192 2193 /* Mark this block as allocated */ 2194 ext2fs_mark_block_bitmap2(fs->block_map, new_blk); 2195 2196 /* Add it to block move list */ 2197 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv); 2198 if (retval) 2199 goto err_out; 2200 2201 bmv->old_loc = blk; 2202 bmv->new_loc = new_blk; 2203 2204 list_add(&(bmv->list), &blk_move_list); 2205 2206 retval = io_channel_read_blk64(fs->io, blk, 1, buf); 2207 if (retval) 2208 goto err_out; 2209 2210 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf); 2211 if (retval) 2212 goto err_out; 2213 } 2214 2215 err_out: 2216 ext2fs_free_mem(&buf); 2217 return retval; 2218 } 2219 2220 static blk64_t translate_block(blk64_t blk) 2221 { 2222 struct list_head *entry; 2223 struct blk_move *bmv; 2224 2225 list_for_each(entry, &blk_move_list) { 2226 bmv = list_entry(entry, struct blk_move, list); 2227 if (bmv->old_loc == blk) 2228 return bmv->new_loc; 2229 } 2230 2231 return 0; 2232 } 2233 2234 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)), 2235 blk64_t *block_nr, 2236 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)), 2237 blk64_t ref_block EXT2FS_ATTR((unused)), 2238 int ref_offset EXT2FS_ATTR((unused)), 2239 void *priv_data) 2240 { 2241 int ret = 0; 2242 blk64_t new_blk; 2243 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data; 2244 2245 if (!ext2fs_test_block_bitmap2(bmap, *block_nr)) 2246 return 0; 2247 new_blk = translate_block(*block_nr); 2248 if (new_blk) { 2249 *block_nr = new_blk; 2250 /* 2251 * This will force the ext2fs_write_inode in the iterator 2252 */ 2253 ret |= BLOCK_CHANGED; 2254 } 2255 2256 return ret; 2257 } 2258 2259 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap) 2260 { 2261 errcode_t retval = 0; 2262 ext2_ino_t ino; 2263 blk64_t blk; 2264 char *block_buf = 0; 2265 struct ext2_inode inode; 2266 ext2_inode_scan scan = NULL; 2267 2268 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf); 2269 if (retval) 2270 return retval; 2271 2272 retval = ext2fs_open_inode_scan(fs, 0, &scan); 2273 if (retval) 2274 goto err_out; 2275 2276 while (1) { 2277 retval = ext2fs_get_next_inode(scan, &ino, &inode); 2278 if (retval) 2279 goto err_out; 2280 2281 if (!ino) 2282 break; 2283 2284 if (inode.i_links_count == 0) 2285 continue; /* inode not in use */ 2286 2287 /* FIXME!! 2288 * If we end up modifying the journal inode 2289 * the sb->s_jnl_blocks will differ. But a 2290 * subsequent e2fsck fixes that. 2291 * Do we need to fix this ?? 2292 */ 2293 2294 if (ext2fs_file_acl_block(fs, &inode) && 2295 ext2fs_test_block_bitmap2(bmap, 2296 ext2fs_file_acl_block(fs, &inode))) { 2297 blk = translate_block(ext2fs_file_acl_block(fs, 2298 &inode)); 2299 if (!blk) 2300 continue; 2301 2302 ext2fs_file_acl_block_set(fs, &inode, blk); 2303 2304 /* 2305 * Write the inode to disk so that inode table 2306 * resizing can work 2307 */ 2308 retval = ext2fs_write_inode(fs, ino, &inode); 2309 if (retval) 2310 goto err_out; 2311 } 2312 2313 if (!ext2fs_inode_has_valid_blocks2(fs, &inode)) 2314 continue; 2315 2316 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf, 2317 process_block, bmap); 2318 if (retval) 2319 goto err_out; 2320 2321 } 2322 2323 err_out: 2324 ext2fs_free_mem(&block_buf); 2325 ext2fs_close_inode_scan(scan); 2326 2327 return retval; 2328 } 2329 2330 /* 2331 * We need to scan for inode and block bitmaps that may need to be 2332 * moved. This can take place if the filesystem was formatted for 2333 * RAID arrays using the mke2fs's extended option "stride". 2334 */ 2335 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap) 2336 { 2337 dgrp_t i; 2338 blk64_t blk, new_blk; 2339 2340 for (i = 0; i < fs->group_desc_count; i++) { 2341 blk = ext2fs_block_bitmap_loc(fs, i); 2342 if (ext2fs_test_block_bitmap2(bmap, blk)) { 2343 new_blk = translate_block(blk); 2344 if (!new_blk) 2345 continue; 2346 ext2fs_block_bitmap_loc_set(fs, i, new_blk); 2347 } 2348 2349 blk = ext2fs_inode_bitmap_loc(fs, i); 2350 if (ext2fs_test_block_bitmap2(bmap, blk)) { 2351 new_blk = translate_block(blk); 2352 if (!new_blk) 2353 continue; 2354 ext2fs_inode_bitmap_loc_set(fs, i, new_blk); 2355 } 2356 } 2357 return 0; 2358 } 2359 2360 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size) 2361 { 2362 dgrp_t i; 2363 blk64_t blk; 2364 errcode_t retval; 2365 int new_ino_blks_per_grp; 2366 unsigned int j; 2367 char *old_itable = NULL, *new_itable = NULL; 2368 char *tmp_old_itable = NULL, *tmp_new_itable = NULL; 2369 unsigned long old_ino_size; 2370 int old_itable_size, new_itable_size; 2371 2372 old_itable_size = fs->inode_blocks_per_group * fs->blocksize; 2373 old_ino_size = EXT2_INODE_SIZE(fs->super); 2374 2375 new_ino_blks_per_grp = ext2fs_div_ceil( 2376 EXT2_INODES_PER_GROUP(fs->super) * 2377 new_ino_size, 2378 fs->blocksize); 2379 2380 new_itable_size = new_ino_blks_per_grp * fs->blocksize; 2381 2382 retval = ext2fs_get_mem(old_itable_size, &old_itable); 2383 if (retval) 2384 return retval; 2385 2386 retval = ext2fs_get_mem(new_itable_size, &new_itable); 2387 if (retval) 2388 goto err_out; 2389 2390 tmp_old_itable = old_itable; 2391 tmp_new_itable = new_itable; 2392 2393 for (i = 0; i < fs->group_desc_count; i++) { 2394 blk = ext2fs_inode_table_loc(fs, i); 2395 retval = io_channel_read_blk64(fs->io, blk, 2396 fs->inode_blocks_per_group, old_itable); 2397 if (retval) 2398 goto err_out; 2399 2400 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) { 2401 memcpy(new_itable, old_itable, old_ino_size); 2402 2403 memset(new_itable+old_ino_size, 0, 2404 new_ino_size - old_ino_size); 2405 2406 new_itable += new_ino_size; 2407 old_itable += old_ino_size; 2408 } 2409 2410 /* reset the pointer */ 2411 old_itable = tmp_old_itable; 2412 new_itable = tmp_new_itable; 2413 2414 retval = io_channel_write_blk64(fs->io, blk, 2415 new_ino_blks_per_grp, new_itable); 2416 if (retval) 2417 goto err_out; 2418 } 2419 2420 /* Update the meta data */ 2421 fs->inode_blocks_per_group = new_ino_blks_per_grp; 2422 ext2fs_free_inode_cache(fs->icache); 2423 fs->icache = 0; 2424 fs->super->s_inode_size = new_ino_size; 2425 2426 err_out: 2427 if (old_itable) 2428 ext2fs_free_mem(&old_itable); 2429 2430 if (new_itable) 2431 ext2fs_free_mem(&new_itable); 2432 2433 return retval; 2434 } 2435 2436 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs) 2437 { 2438 blk64_t blk; 2439 ext2_ino_t ino; 2440 unsigned int group = 0; 2441 unsigned int count = 0; 2442 int total_free = 0; 2443 int group_free = 0; 2444 2445 /* 2446 * First calculate the block statistics 2447 */ 2448 for (blk = fs->super->s_first_data_block; 2449 blk < ext2fs_blocks_count(fs->super); blk++) { 2450 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) { 2451 group_free++; 2452 total_free++; 2453 } 2454 count++; 2455 if ((count == fs->super->s_blocks_per_group) || 2456 (blk == ext2fs_blocks_count(fs->super)-1)) { 2457 ext2fs_bg_free_blocks_count_set(fs, group++, 2458 group_free); 2459 count = 0; 2460 group_free = 0; 2461 } 2462 } 2463 total_free = EXT2FS_C2B(fs, total_free); 2464 ext2fs_free_blocks_count_set(fs->super, total_free); 2465 2466 /* 2467 * Next, calculate the inode statistics 2468 */ 2469 group_free = 0; 2470 total_free = 0; 2471 count = 0; 2472 group = 0; 2473 2474 /* Protect loop from wrap-around if s_inodes_count maxed */ 2475 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) { 2476 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) { 2477 group_free++; 2478 total_free++; 2479 } 2480 count++; 2481 if ((count == fs->super->s_inodes_per_group) || 2482 (ino == fs->super->s_inodes_count)) { 2483 ext2fs_bg_free_inodes_count_set(fs, group++, 2484 group_free); 2485 count = 0; 2486 group_free = 0; 2487 } 2488 } 2489 fs->super->s_free_inodes_count = total_free; 2490 ext2fs_mark_super_dirty(fs); 2491 return 0; 2492 } 2493 2494 #define list_for_each_safe(pos, pnext, head) \ 2495 for (pos = (head)->next, pnext = pos->next; pos != (head); \ 2496 pos = pnext, pnext = pos->next) 2497 2498 static void free_blk_move_list(void) 2499 { 2500 struct list_head *entry, *tmp; 2501 struct blk_move *bmv; 2502 2503 list_for_each_safe(entry, tmp, &blk_move_list) { 2504 bmv = list_entry(entry, struct blk_move, list); 2505 list_del(entry); 2506 ext2fs_free_mem(&bmv); 2507 } 2508 return; 2509 } 2510 2511 static int resize_inode(ext2_filsys fs, unsigned long new_size) 2512 { 2513 errcode_t retval; 2514 int new_ino_blks_per_grp; 2515 ext2fs_block_bitmap bmap; 2516 2517 retval = ext2fs_read_inode_bitmap(fs); 2518 if (retval) { 2519 fputs(_("Failed to read inode bitmap\n"), stderr); 2520 return retval; 2521 } 2522 retval = ext2fs_read_block_bitmap(fs); 2523 if (retval) { 2524 fputs(_("Failed to read block bitmap\n"), stderr); 2525 return retval; 2526 } 2527 INIT_LIST_HEAD(&blk_move_list); 2528 2529 2530 new_ino_blks_per_grp = ext2fs_div_ceil( 2531 EXT2_INODES_PER_GROUP(fs->super)* 2532 new_size, 2533 fs->blocksize); 2534 2535 /* We may change the file system. 2536 * Mark the file system as invalid so that 2537 * the user is prompted to run fsck. 2538 */ 2539 fs->super->s_state &= ~EXT2_VALID_FS; 2540 2541 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"), 2542 &bmap); 2543 if (retval) { 2544 fputs(_("Failed to allocate block bitmap when " 2545 "increasing inode size\n"), stderr); 2546 return retval; 2547 } 2548 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap); 2549 if (retval) { 2550 fputs(_("Not enough space to increase inode size \n"), stderr); 2551 goto err_out; 2552 } 2553 retval = move_block(fs, bmap); 2554 if (retval) { 2555 fputs(_("Failed to relocate blocks during inode resize \n"), 2556 stderr); 2557 goto err_out; 2558 } 2559 retval = inode_scan_and_fix(fs, bmap); 2560 if (retval) 2561 goto err_out_undo; 2562 2563 retval = group_desc_scan_and_fix(fs, bmap); 2564 if (retval) 2565 goto err_out_undo; 2566 2567 retval = expand_inode_table(fs, new_size); 2568 if (retval) 2569 goto err_out_undo; 2570 2571 ext2fs_calculate_summary_stats(fs); 2572 2573 fs->super->s_state |= EXT2_VALID_FS; 2574 /* mark super block and block bitmap as dirty */ 2575 ext2fs_mark_super_dirty(fs); 2576 ext2fs_mark_bb_dirty(fs); 2577 2578 err_out: 2579 free_blk_move_list(); 2580 ext2fs_free_block_bitmap(bmap); 2581 2582 return retval; 2583 2584 err_out_undo: 2585 free_blk_move_list(); 2586 ext2fs_free_block_bitmap(bmap); 2587 fputs(_("Error in resizing the inode size.\n" 2588 "Run e2undo to undo the " 2589 "file system changes. \n"), stderr); 2590 2591 return retval; 2592 } 2593 2594 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr) 2595 { 2596 errcode_t retval = 0; 2597 const char *tdb_dir; 2598 char *tdb_file = NULL; 2599 char *dev_name, *tmp_name; 2600 2601 /* (re)open a specific undo file */ 2602 if (undo_file && undo_file[0] != 0) { 2603 retval = set_undo_io_backing_manager(*io_ptr); 2604 if (retval) 2605 goto err; 2606 *io_ptr = undo_io_manager; 2607 retval = set_undo_io_backup_file(undo_file); 2608 if (retval) 2609 goto err; 2610 printf(_("Overwriting existing filesystem; this can be undone " 2611 "using the command:\n" 2612 " e2undo %s %s\n\n"), 2613 undo_file, name); 2614 return retval; 2615 } 2616 2617 /* 2618 * Configuration via a conf file would be 2619 * nice 2620 */ 2621 tdb_dir = getenv("E2FSPROGS_UNDO_DIR"); 2622 if (!tdb_dir) 2623 tdb_dir = "/var/lib/e2fsprogs"; 2624 2625 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) || 2626 access(tdb_dir, W_OK)) 2627 return 0; 2628 2629 tmp_name = strdup(name); 2630 if (!tmp_name) 2631 goto errout; 2632 dev_name = basename(tmp_name); 2633 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1); 2634 if (!tdb_file) { 2635 free(tmp_name); 2636 goto errout; 2637 } 2638 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name); 2639 free(tmp_name); 2640 2641 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) { 2642 retval = errno; 2643 com_err(program_name, retval, 2644 _("while trying to delete %s"), tdb_file); 2645 goto errout; 2646 } 2647 2648 retval = set_undo_io_backing_manager(*io_ptr); 2649 if (retval) 2650 goto errout; 2651 *io_ptr = undo_io_manager; 2652 retval = set_undo_io_backup_file(tdb_file); 2653 if (retval) 2654 goto errout; 2655 printf(_("Overwriting existing filesystem; this can be undone " 2656 "using the command:\n" 2657 " e2undo %s %s\n\n"), 2658 tdb_file, name); 2659 2660 free(tdb_file); 2661 return 0; 2662 errout: 2663 free(tdb_file); 2664 err: 2665 com_err("tune2fs", retval, "while trying to setup undo file\n"); 2666 return retval; 2667 } 2668 2669 static int 2670 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE]) 2671 { 2672 int retval, nr_users, start; 2673 journal_superblock_t *jsb; 2674 ext2_filsys jfs; 2675 __u8 *j_uuid; 2676 char *journal_path; 2677 char uuid[UUID_STR_SIZE]; 2678 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8))); 2679 2680 if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid)) 2681 return 0; 2682 2683 uuid_unparse(sb->s_journal_uuid, uuid); 2684 journal_path = blkid_get_devname(NULL, "UUID", uuid); 2685 if (!journal_path) 2686 return 0; 2687 2688 retval = ext2fs_open2(journal_path, io_options, 2689 EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW, 2690 0, 0, unix_io_manager, &jfs); 2691 if (retval) { 2692 com_err(program_name, retval, 2693 _("while trying to open %s"), 2694 journal_path); 2695 return retval; 2696 } 2697 2698 retval = get_journal_sb(jfs, buf); 2699 if (retval != 0) { 2700 if (retval == EXT2_ET_UNSUPP_FEATURE) 2701 fprintf(stderr, _("%s is not a journal device.\n"), 2702 journal_path); 2703 return retval; 2704 } 2705 2706 jsb = (journal_superblock_t *) buf; 2707 /* Find the filesystem UUID */ 2708 nr_users = ntohl(jsb->s_nr_users); 2709 2710 j_uuid = journal_user(old_uuid, jsb->s_users, nr_users); 2711 if (j_uuid == NULL) { 2712 fputs(_("Filesystem's UUID not found on journal device.\n"), 2713 stderr); 2714 return EXT2_ET_LOAD_EXT_JOURNAL; 2715 } 2716 2717 memcpy(j_uuid, sb->s_uuid, UUID_SIZE); 2718 2719 start = ext2fs_journal_sb_start(jfs->blocksize); 2720 /* Write back the journal superblock */ 2721 retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf); 2722 if (retval != 0) { 2723 com_err(program_name, retval, 2724 "while writing journal superblock."); 2725 return retval; 2726 } 2727 2728 ext2fs_close(jfs); 2729 2730 return 0; 2731 } 2732 2733 #ifndef BUILD_AS_LIB 2734 int main(int argc, char **argv) 2735 #else 2736 int tune2fs_main(int argc, char **argv) 2737 #endif /* BUILD_AS_LIB */ 2738 { 2739 errcode_t retval; 2740 ext2_filsys fs; 2741 struct ext2_super_block *sb; 2742 io_manager io_ptr, io_ptr_orig = NULL; 2743 int rc = 0; 2744 char default_undo_file[1] = { 0 }; 2745 2746 #ifdef ENABLE_NLS 2747 setlocale(LC_MESSAGES, ""); 2748 setlocale(LC_CTYPE, ""); 2749 bindtextdomain(NLS_CAT_NAME, LOCALEDIR); 2750 textdomain(NLS_CAT_NAME); 2751 set_com_err_gettext(gettext); 2752 #endif 2753 if (argc && *argv) 2754 program_name = *argv; 2755 add_error_table(&et_ext2_error_table); 2756 2757 #ifdef CONFIG_BUILD_FINDFS 2758 if (strcmp(get_progname(argv[0]), "findfs") == 0) 2759 do_findfs(argc, argv); 2760 #endif 2761 if (strcmp(get_progname(argv[0]), "e2label") == 0) 2762 parse_e2label_options(argc, argv); 2763 else 2764 parse_tune2fs_options(argc, argv); 2765 2766 #ifdef CONFIG_TESTIO_DEBUG 2767 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) { 2768 io_ptr = test_io_manager; 2769 test_io_backing_manager = unix_io_manager; 2770 } else 2771 #endif 2772 io_ptr = unix_io_manager; 2773 2774 retry_open: 2775 if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag) 2776 open_flag |= EXT2_FLAG_SKIP_MMP; 2777 2778 open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK; 2779 2780 /* keep the filesystem struct around to dump MMP data */ 2781 open_flag |= EXT2_FLAG_NOFREE_ON_ERROR; 2782 2783 retval = ext2fs_open2(device_name, io_options, open_flag, 2784 0, 0, io_ptr, &fs); 2785 if (retval) { 2786 com_err(program_name, retval, 2787 _("while trying to open %s"), 2788 device_name); 2789 if (retval == EXT2_ET_MMP_FSCK_ON || 2790 retval == EXT2_ET_MMP_UNKNOWN_SEQ) 2791 dump_mmp_msg(fs->mmp_buf, 2792 _("If you are sure the filesystem " 2793 "is not in use on any node, run:\n" 2794 "'tune2fs -f -E clear_mmp {device}'\n")); 2795 else if (retval == EXT2_ET_MMP_FAILED) 2796 dump_mmp_msg(fs->mmp_buf, NULL); 2797 else if (retval == EXT2_ET_MMP_MAGIC_INVALID) 2798 fprintf(stderr, 2799 _("MMP block magic is bad. Try to fix it by " 2800 "running:\n'e2fsck -f %s'\n"), device_name); 2801 else if (retval == EXT2_ET_BAD_MAGIC) 2802 check_plausibility(device_name, CHECK_FS_EXIST, NULL); 2803 else if (retval != EXT2_ET_MMP_FAILED) 2804 fprintf(stderr, "%s", 2805 _("Couldn't find valid filesystem superblock.\n")); 2806 2807 ext2fs_free(fs); 2808 exit(1); 2809 } 2810 if (ext2fs_has_feature_journal_dev(fs->super)) { 2811 fprintf(stderr, "%s", _("Cannot modify a journal device.\n")); 2812 ext2fs_free(fs); 2813 exit(1); 2814 } 2815 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE; 2816 2817 if (I_flag) { 2818 /* 2819 * Check the inode size is right so we can issue an 2820 * error message and bail before setting up the tdb 2821 * file. 2822 */ 2823 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) { 2824 fprintf(stderr, _("The inode size is already %lu\n"), 2825 new_inode_size); 2826 rc = 1; 2827 goto closefs; 2828 } 2829 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) { 2830 fprintf(stderr, "%s", 2831 _("Shrinking inode size is not supported\n")); 2832 rc = 1; 2833 goto closefs; 2834 } 2835 if (new_inode_size > fs->blocksize) { 2836 fprintf(stderr, _("Invalid inode size %lu (max %d)\n"), 2837 new_inode_size, fs->blocksize); 2838 rc = 1; 2839 goto closefs; 2840 } 2841 check_fsck_needed(fs, 2842 _("Resizing inodes could take some time.")); 2843 /* 2844 * If inode resize is requested use the 2845 * Undo I/O manager 2846 */ 2847 undo_file = default_undo_file; 2848 } 2849 2850 /* Set up an undo file */ 2851 if (undo_file && io_ptr_orig == NULL) { 2852 io_ptr_orig = io_ptr; 2853 retval = tune2fs_setup_tdb(device_name, &io_ptr); 2854 if (retval) { 2855 rc = 1; 2856 goto closefs; 2857 } 2858 if (io_ptr != io_ptr_orig) { 2859 ext2fs_close_free(&fs); 2860 goto retry_open; 2861 } 2862 } 2863 2864 sb = fs->super; 2865 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 2866 2867 if (print_label) { 2868 /* For e2label emulation */ 2869 printf("%.*s\n", (int) sizeof(sb->s_volume_name), 2870 sb->s_volume_name); 2871 remove_error_table(&et_ext2_error_table); 2872 goto closefs; 2873 } 2874 2875 retval = ext2fs_check_if_mounted(device_name, &mount_flags); 2876 if (retval) { 2877 com_err("ext2fs_check_if_mount", retval, 2878 _("while determining whether %s is mounted."), 2879 device_name); 2880 rc = 1; 2881 goto closefs; 2882 } 2883 /* Normally we only need to write out the superblock */ 2884 fs->flags |= EXT2_FLAG_SUPER_ONLY; 2885 2886 if (c_flag) { 2887 sb->s_max_mnt_count = max_mount_count; 2888 ext2fs_mark_super_dirty(fs); 2889 printf(_("Setting maximal mount count to %d\n"), 2890 max_mount_count); 2891 } 2892 if (C_flag) { 2893 sb->s_mnt_count = mount_count; 2894 ext2fs_mark_super_dirty(fs); 2895 printf(_("Setting current mount count to %d\n"), mount_count); 2896 } 2897 if (e_flag) { 2898 sb->s_errors = errors; 2899 ext2fs_mark_super_dirty(fs); 2900 printf(_("Setting error behavior to %d\n"), errors); 2901 } 2902 if (g_flag) { 2903 sb->s_def_resgid = resgid; 2904 ext2fs_mark_super_dirty(fs); 2905 printf(_("Setting reserved blocks gid to %lu\n"), resgid); 2906 } 2907 if (i_flag) { 2908 if ((unsigned long long)interval >= (1ULL << 32)) { 2909 com_err(program_name, 0, 2910 _("interval between checks is too big (%lu)"), 2911 interval); 2912 rc = 1; 2913 goto closefs; 2914 } 2915 sb->s_checkinterval = interval; 2916 ext2fs_mark_super_dirty(fs); 2917 printf(_("Setting interval between checks to %lu seconds\n"), 2918 interval); 2919 } 2920 if (m_flag) { 2921 ext2fs_r_blocks_count_set(sb, reserved_ratio * 2922 ext2fs_blocks_count(sb) / 100.0); 2923 ext2fs_mark_super_dirty(fs); 2924 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"), 2925 reserved_ratio, ext2fs_r_blocks_count(sb)); 2926 } 2927 if (r_flag) { 2928 if (reserved_blocks > ext2fs_blocks_count(sb)/2) { 2929 com_err(program_name, 0, 2930 _("reserved blocks count is too big (%llu)"), 2931 reserved_blocks); 2932 rc = 1; 2933 goto closefs; 2934 } 2935 ext2fs_r_blocks_count_set(sb, reserved_blocks); 2936 ext2fs_mark_super_dirty(fs); 2937 printf(_("Setting reserved blocks count to %llu\n"), 2938 reserved_blocks); 2939 } 2940 if (s_flag == 1) { 2941 if (ext2fs_has_feature_sparse_super(sb)) { 2942 fputs(_("\nThe filesystem already has sparse " 2943 "superblocks.\n"), stderr); 2944 } else if (ext2fs_has_feature_meta_bg(sb)) { 2945 fputs(_("\nSetting the sparse superblock flag not " 2946 "supported\nfor filesystems with " 2947 "the meta_bg feature enabled.\n"), 2948 stderr); 2949 rc = 1; 2950 goto closefs; 2951 } else { 2952 ext2fs_set_feature_sparse_super(sb); 2953 sb->s_state &= ~EXT2_VALID_FS; 2954 ext2fs_mark_super_dirty(fs); 2955 printf(_("\nSparse superblock flag set. %s"), 2956 _(please_fsck)); 2957 } 2958 } 2959 if (s_flag == 0) { 2960 fputs(_("\nClearing the sparse superblock flag not supported.\n"), 2961 stderr); 2962 rc = 1; 2963 goto closefs; 2964 } 2965 if (T_flag) { 2966 sb->s_lastcheck = last_check_time; 2967 ext2fs_mark_super_dirty(fs); 2968 printf(_("Setting time filesystem last checked to %s\n"), 2969 ctime(&last_check_time)); 2970 } 2971 if (u_flag) { 2972 sb->s_def_resuid = resuid; 2973 ext2fs_mark_super_dirty(fs); 2974 printf(_("Setting reserved blocks uid to %lu\n"), resuid); 2975 } 2976 if (L_flag) { 2977 if (strlen(new_label) > sizeof(sb->s_volume_name)) 2978 fputs(_("Warning: label too long, truncating.\n"), 2979 stderr); 2980 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name)); 2981 strncpy(sb->s_volume_name, new_label, 2982 sizeof(sb->s_volume_name)); 2983 ext2fs_mark_super_dirty(fs); 2984 } 2985 if (M_flag) { 2986 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted)); 2987 strncpy(sb->s_last_mounted, new_last_mounted, 2988 sizeof(sb->s_last_mounted)); 2989 ext2fs_mark_super_dirty(fs); 2990 } 2991 if (mntopts_cmd) { 2992 rc = update_mntopts(fs, mntopts_cmd); 2993 if (rc) 2994 goto closefs; 2995 } 2996 if (features_cmd) { 2997 rc = update_feature_set(fs, features_cmd); 2998 if (rc) 2999 goto closefs; 3000 } 3001 if (extended_cmd) { 3002 rc = parse_extended_opts(fs, extended_cmd); 3003 if (rc) 3004 goto closefs; 3005 if (clear_mmp && !f_flag) { 3006 fputs(_("Error in using clear_mmp. " 3007 "It must be used with -f\n"), 3008 stderr); 3009 goto closefs; 3010 } 3011 } 3012 if (clear_mmp) { 3013 rc = ext2fs_mmp_clear(fs); 3014 goto closefs; 3015 } 3016 if (journal_size || journal_device) { 3017 rc = add_journal(fs); 3018 if (rc) 3019 goto closefs; 3020 } 3021 3022 if (Q_flag) { 3023 if (mount_flags & EXT2_MF_MOUNTED) { 3024 fputs(_("The quota feature may only be changed when " 3025 "the filesystem is unmounted.\n"), stderr); 3026 rc = 1; 3027 goto closefs; 3028 } 3029 handle_quota_options(fs); 3030 } 3031 3032 if (U_flag) { 3033 int set_csum = 0; 3034 dgrp_t i; 3035 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8))); 3036 __u8 old_uuid[UUID_SIZE]; 3037 3038 if (ext2fs_has_group_desc_csum(fs)) { 3039 /* 3040 * Changing the UUID on a metadata_csum FS requires 3041 * rewriting all metadata, which can race with a 3042 * mounted fs. Don't allow that unless we're saving 3043 * the checksum seed. 3044 */ 3045 if ((mount_flags & EXT2_MF_MOUNTED) && 3046 !ext2fs_has_feature_csum_seed(fs->super) && 3047 ext2fs_has_feature_metadata_csum(fs->super)) { 3048 fputs(_("The UUID may only be " 3049 "changed when the filesystem is " 3050 "unmounted.\n"), stderr); 3051 fputs(_("If you only use kernels newer than " 3052 "v4.4, run 'tune2fs -O " 3053 "metadata_csum_seed' and re-run this " 3054 "command.\n"), stderr); 3055 try_confirm_csum_seed_support(); 3056 exit(1); 3057 } 3058 if (!ext2fs_has_feature_csum_seed(fs->super)) 3059 check_fsck_needed(fs, 3060 _("Setting UUID on a checksummed " 3061 "filesystem could take some time.")); 3062 3063 /* 3064 * Determine if the block group checksums are 3065 * correct so we know whether or not to set 3066 * them later on. 3067 */ 3068 for (i = 0; i < fs->group_desc_count; i++) 3069 if (!ext2fs_group_desc_csum_verify(fs, i)) 3070 break; 3071 if (i >= fs->group_desc_count) 3072 set_csum = 1; 3073 } 3074 3075 memcpy(old_uuid, sb->s_uuid, UUID_SIZE); 3076 if ((strcasecmp(new_UUID, "null") == 0) || 3077 (strcasecmp(new_UUID, "clear") == 0)) { 3078 uuid_clear(sb->s_uuid); 3079 } else if (strcasecmp(new_UUID, "time") == 0) { 3080 uuid_generate_time(sb->s_uuid); 3081 } else if (strcasecmp(new_UUID, "random") == 0) { 3082 uuid_generate(sb->s_uuid); 3083 } else if (uuid_parse(new_UUID, sb->s_uuid)) { 3084 com_err(program_name, 0, "%s", 3085 _("Invalid UUID format\n")); 3086 rc = 1; 3087 goto closefs; 3088 } 3089 ext2fs_init_csum_seed(fs); 3090 if (set_csum) { 3091 for (i = 0; i < fs->group_desc_count; i++) 3092 ext2fs_group_desc_csum_set(fs, i); 3093 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 3094 } 3095 3096 /* If this is a journal dev, we need to copy UUID into jsb */ 3097 if (!(rc = get_journal_sb(fs, buf))) { 3098 journal_superblock_t *jsb; 3099 3100 jsb = (journal_superblock_t *) buf; 3101 fputs(_("Need to update journal superblock.\n"), stdout); 3102 memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid)); 3103 3104 /* Writeback the journal superblock */ 3105 if ((rc = io_channel_write_blk64(fs->io, 3106 ext2fs_journal_sb_start(fs->blocksize), 3107 -SUPERBLOCK_SIZE, buf))) 3108 goto closefs; 3109 } else if (rc != EXT2_ET_UNSUPP_FEATURE) 3110 goto closefs; 3111 else { 3112 rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */ 3113 3114 if ((rc = fs_update_journal_user(sb, old_uuid))) 3115 goto closefs; 3116 } 3117 3118 ext2fs_mark_super_dirty(fs); 3119 if (ext2fs_has_feature_metadata_csum(fs->super) && 3120 !ext2fs_has_feature_csum_seed(fs->super)) 3121 rewrite_checksums = 1; 3122 } 3123 3124 if (I_flag) { 3125 if (mount_flags & EXT2_MF_MOUNTED) { 3126 fputs(_("The inode size may only be " 3127 "changed when the filesystem is " 3128 "unmounted.\n"), stderr); 3129 rc = 1; 3130 goto closefs; 3131 } 3132 if (ext2fs_has_feature_flex_bg(fs->super)) { 3133 fputs(_("Changing the inode size not supported for " 3134 "filesystems with the flex_bg\n" 3135 "feature enabled.\n"), 3136 stderr); 3137 rc = 1; 3138 goto closefs; 3139 } 3140 /* 3141 * We want to update group descriptor also 3142 * with the new free inode count 3143 */ 3144 if (rewrite_checksums) 3145 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS; 3146 fs->flags &= ~EXT2_FLAG_SUPER_ONLY; 3147 retval = resize_inode(fs, new_inode_size); 3148 if (rewrite_checksums) 3149 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS; 3150 if (retval == 0) { 3151 printf(_("Setting inode size %lu\n"), 3152 new_inode_size); 3153 rewrite_checksums = 1; 3154 } else { 3155 printf("%s", _("Failed to change inode size\n")); 3156 rc = 1; 3157 goto closefs; 3158 } 3159 } 3160 3161 if (rewrite_checksums) 3162 rewrite_metadata_checksums(fs); 3163 3164 if (l_flag) 3165 list_super(sb); 3166 if (stride_set) { 3167 sb->s_raid_stride = stride; 3168 ext2fs_mark_super_dirty(fs); 3169 printf(_("Setting stride size to %d\n"), stride); 3170 } 3171 if (stripe_width_set) { 3172 sb->s_raid_stripe_width = stripe_width; 3173 ext2fs_mark_super_dirty(fs); 3174 printf(_("Setting stripe width to %d\n"), stripe_width); 3175 } 3176 if (ext_mount_opts) { 3177 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts, 3178 sizeof(fs->super->s_mount_opts)); 3179 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0; 3180 ext2fs_mark_super_dirty(fs); 3181 printf(_("Setting extended default mount options to '%s'\n"), 3182 ext_mount_opts); 3183 free(ext_mount_opts); 3184 } 3185 3186 #ifdef NO_RECOVERY 3187 /* Warn if file system needs recovery and it is opened for writing. */ 3188 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) && 3189 (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) && 3190 (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) { 3191 fprintf(stderr, 3192 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n" 3193 "\te2fsck -E journal_only %s\n\n" 3194 "then rerun this command. Otherwise, any changes made may be overwritten\n" 3195 "by journal recovery.\n"), device_name); 3196 } 3197 #else 3198 /* Recover the journal if possible. */ 3199 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) && 3200 ext2fs_has_feature_journal_needs_recovery(fs->super)) { 3201 errcode_t err; 3202 3203 printf(_("Recovering journal.\n")); 3204 err = ext2fs_run_ext3_journal(&fs); 3205 if (err) { 3206 com_err("tune2fs", err, "while recovering journal.\n"); 3207 printf(_("Please run e2fsck -fy %s.\n"), argv[1]); 3208 goto closefs; 3209 } 3210 ext2fs_clear_feature_journal_needs_recovery(fs->super); 3211 ext2fs_mark_super_dirty(fs); 3212 } 3213 #endif 3214 3215 free(device_name); 3216 remove_error_table(&et_ext2_error_table); 3217 3218 closefs: 3219 if (rc) { 3220 ext2fs_mmp_stop(fs); 3221 #ifndef BUILD_AS_LIB 3222 exit(1); 3223 #endif 3224 } 3225 3226 convert_64bit(fs, feature_64bit); 3227 return (ext2fs_close_free(&fs) ? 1 : 0); 3228 } 3229
