1 /* 2 * mke2fs.c - Make a ext2fs filesystem. 3 * 4 * Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 5 * 2003, 2004, 2005 by Theodore Ts'o. 6 * 7 * %Begin-Header% 8 * This file may be redistributed under the terms of the GNU Public 9 * License. 10 * %End-Header% 11 */ 12 13 /* Usage: mke2fs [options] device 14 * 15 * The device may be a block device or a image of one, but this isn't 16 * enforced (but it's not much fun on a character device :-). 17 */ 18 19 #include <stdio.h> 20 #include <string.h> 21 #include <fcntl.h> 22 #include <ctype.h> 23 #include <time.h> 24 #ifdef __linux__ 25 #include <sys/utsname.h> 26 #endif 27 #ifdef HAVE_GETOPT_H 28 #include <getopt.h> 29 #else 30 extern char *optarg; 31 extern int optind; 32 #endif 33 #ifdef HAVE_UNISTD_H 34 #include <unistd.h> 35 #endif 36 #ifdef HAVE_STDLIB_H 37 #include <stdlib.h> 38 #endif 39 #ifdef HAVE_ERRNO_H 40 #include <errno.h> 41 #endif 42 #ifdef HAVE_MNTENT_H 43 #include <mntent.h> 44 #endif 45 #include <sys/ioctl.h> 46 #include <sys/types.h> 47 48 #include "ext2fs/ext2_fs.h" 49 #include "et/com_err.h" 50 #include "uuid/uuid.h" 51 #include "e2p/e2p.h" 52 #include "ext2fs/ext2fs.h" 53 #include "util.h" 54 #include "profile.h" 55 #include "prof_err.h" 56 #include "../version.h" 57 #include "nls-enable.h" 58 59 #define STRIDE_LENGTH 8 60 61 #ifndef __sparc__ 62 #define ZAP_BOOTBLOCK 63 #endif 64 65 extern int isatty(int); 66 extern FILE *fpopen(const char *cmd, const char *mode); 67 68 const char * program_name = "mke2fs"; 69 const char * device_name /* = NULL */; 70 71 /* Command line options */ 72 int cflag; 73 int verbose; 74 int quiet; 75 int super_only; 76 int force; 77 int noaction; 78 int journal_size; 79 int journal_flags; 80 char *bad_blocks_filename; 81 __u32 fs_stride; 82 83 struct ext2_super_block fs_param; 84 char *creator_os; 85 char *volume_label; 86 char *mount_dir; 87 char *journal_device; 88 int sync_kludge; /* Set using the MKE2FS_SYNC env. option */ 89 90 profile_t profile; 91 92 int sys_page_size = 4096; 93 int linux_version_code = 0; 94 95 static void usage(void) 96 { 97 fprintf(stderr, _("Usage: %s [-c|-l filename] [-b block-size] " 98 "[-f fragment-size]\n\t[-i bytes-per-inode] [-I inode-size] " 99 "[-J journal-options]\n" 100 "\t[-N number-of-inodes] [-m reserved-blocks-percentage] " 101 "[-o creator-os]\n\t[-g blocks-per-group] [-L volume-label] " 102 "[-M last-mounted-directory]\n\t[-O feature[,...]] " 103 "[-r fs-revision] [-E extended-option[,...]]\n" 104 "\t[-T fs-type] [-jnqvFSV] device [blocks-count]\n"), 105 program_name); 106 exit(1); 107 } 108 109 static int int_log2(int arg) 110 { 111 int l = 0; 112 113 arg >>= 1; 114 while (arg) { 115 l++; 116 arg >>= 1; 117 } 118 return l; 119 } 120 121 static int int_log10(unsigned int arg) 122 { 123 int l; 124 125 for (l=0; arg ; l++) 126 arg = arg / 10; 127 return l; 128 } 129 130 static int parse_version_number(const char *s) 131 { 132 int major, minor, rev; 133 char *endptr; 134 const char *cp = s; 135 136 if (!s) 137 return 0; 138 major = strtol(cp, &endptr, 10); 139 if (cp == endptr || *endptr != '.') 140 return 0; 141 cp = endptr + 1; 142 minor = strtol(cp, &endptr, 10); 143 if (cp == endptr || *endptr != '.') 144 return 0; 145 cp = endptr + 1; 146 rev = strtol(cp, &endptr, 10); 147 if (cp == endptr) 148 return 0; 149 return ((((major * 256) + minor) * 256) + rev); 150 } 151 152 /* 153 * Helper function for read_bb_file and test_disk 154 */ 155 static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk) 156 { 157 fprintf(stderr, _("Bad block %u out of range; ignored.\n"), blk); 158 return; 159 } 160 161 /* 162 * Reads the bad blocks list from a file 163 */ 164 static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list, 165 const char *bad_blocks_file) 166 { 167 FILE *f; 168 errcode_t retval; 169 170 f = fopen(bad_blocks_file, "r"); 171 if (!f) { 172 com_err("read_bad_blocks_file", errno, 173 _("while trying to open %s"), bad_blocks_file); 174 exit(1); 175 } 176 retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block); 177 fclose (f); 178 if (retval) { 179 com_err("ext2fs_read_bb_FILE", retval, 180 _("while reading in list of bad blocks from file")); 181 exit(1); 182 } 183 } 184 185 #ifndef NO_CHECK_BB 186 /* 187 * Runs the badblocks program to test the disk 188 */ 189 static void test_disk(ext2_filsys fs, badblocks_list *bb_list) 190 { 191 FILE *f; 192 errcode_t retval; 193 char buf[1024]; 194 195 sprintf(buf, "badblocks -b %d -X %s%s%s %u", fs->blocksize, 196 quiet ? "" : "-s ", (cflag > 1) ? "-w " : "", 197 fs->device_name, fs->super->s_blocks_count-1); 198 if (verbose) 199 printf(_("Running command: %s\n"), buf); 200 f = popen(buf, "r"); 201 if (!f) { 202 com_err("popen", errno, 203 _("while trying to run '%s'"), buf); 204 exit(1); 205 } 206 retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block); 207 pclose(f); 208 if (retval) { 209 com_err("ext2fs_read_bb_FILE", retval, 210 _("while processing list of bad blocks from program")); 211 exit(1); 212 } 213 } 214 #endif 215 216 static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list) 217 { 218 dgrp_t i; 219 blk_t j; 220 unsigned must_be_good; 221 blk_t blk; 222 badblocks_iterate bb_iter; 223 errcode_t retval; 224 blk_t group_block; 225 int group; 226 int group_bad; 227 228 if (!bb_list) 229 return; 230 231 /* 232 * The primary superblock and group descriptors *must* be 233 * good; if not, abort. 234 */ 235 must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks; 236 for (i = fs->super->s_first_data_block; i <= must_be_good; i++) { 237 if (ext2fs_badblocks_list_test(bb_list, i)) { 238 fprintf(stderr, _("Block %d in primary " 239 "superblock/group descriptor area bad.\n"), i); 240 fprintf(stderr, _("Blocks %u through %u must be good " 241 "in order to build a filesystem.\n"), 242 fs->super->s_first_data_block, must_be_good); 243 fputs(_("Aborting....\n"), stderr); 244 exit(1); 245 } 246 } 247 248 /* 249 * See if any of the bad blocks are showing up in the backup 250 * superblocks and/or group descriptors. If so, issue a 251 * warning and adjust the block counts appropriately. 252 */ 253 group_block = fs->super->s_first_data_block + 254 fs->super->s_blocks_per_group; 255 256 for (i = 1; i < fs->group_desc_count; i++) { 257 group_bad = 0; 258 for (j=0; j < fs->desc_blocks+1; j++) { 259 if (ext2fs_badblocks_list_test(bb_list, 260 group_block + j)) { 261 if (!group_bad) 262 fprintf(stderr, 263 _("Warning: the backup superblock/group descriptors at block %u contain\n" 264 " bad blocks.\n\n"), 265 group_block); 266 group_bad++; 267 group = ext2fs_group_of_blk(fs, group_block+j); 268 fs->group_desc[group].bg_free_blocks_count++; 269 fs->super->s_free_blocks_count++; 270 } 271 } 272 group_block += fs->super->s_blocks_per_group; 273 } 274 275 /* 276 * Mark all the bad blocks as used... 277 */ 278 retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter); 279 if (retval) { 280 com_err("ext2fs_badblocks_list_iterate_begin", retval, 281 _("while marking bad blocks as used")); 282 exit(1); 283 } 284 while (ext2fs_badblocks_list_iterate(bb_iter, &blk)) 285 ext2fs_mark_block_bitmap(fs->block_map, blk); 286 ext2fs_badblocks_list_iterate_end(bb_iter); 287 } 288 289 /* 290 * These functions implement a generalized progress meter. 291 */ 292 struct progress_struct { 293 char format[20]; 294 char backup[80]; 295 __u32 max; 296 int skip_progress; 297 }; 298 299 static void progress_init(struct progress_struct *progress, 300 const char *label,__u32 max) 301 { 302 int i; 303 304 memset(progress, 0, sizeof(struct progress_struct)); 305 if (quiet) 306 return; 307 308 /* 309 * Figure out how many digits we need 310 */ 311 i = int_log10(max); 312 sprintf(progress->format, "%%%dd/%%%dld", i, i); 313 memset(progress->backup, '\b', sizeof(progress->backup)-1); 314 progress->backup[sizeof(progress->backup)-1] = 0; 315 if ((2*i)+1 < (int) sizeof(progress->backup)) 316 progress->backup[(2*i)+1] = 0; 317 progress->max = max; 318 319 progress->skip_progress = 0; 320 if (getenv("MKE2FS_SKIP_PROGRESS")) 321 progress->skip_progress++; 322 323 fputs(label, stdout); 324 fflush(stdout); 325 } 326 327 static void progress_update(struct progress_struct *progress, __u32 val) 328 { 329 if ((progress->format[0] == 0) || progress->skip_progress) 330 return; 331 printf(progress->format, val, progress->max); 332 fputs(progress->backup, stdout); 333 } 334 335 static void progress_close(struct progress_struct *progress) 336 { 337 if (progress->format[0] == 0) 338 return; 339 fputs(_("done \n"), stdout); 340 } 341 342 343 /* 344 * Helper function which zeros out _num_ blocks starting at _blk_. In 345 * case of an error, the details of the error is returned via _ret_blk_ 346 * and _ret_count_ if they are non-NULL pointers. Returns 0 on 347 * success, and an error code on an error. 348 * 349 * As a special case, if the first argument is NULL, then it will 350 * attempt to free the static zeroizing buffer. (This is to keep 351 * programs that check for memory leaks happy.) 352 */ 353 static errcode_t zero_blocks(ext2_filsys fs, blk_t blk, int num, 354 struct progress_struct *progress, 355 blk_t *ret_blk, int *ret_count) 356 { 357 int j, count, next_update, next_update_incr; 358 static char *buf; 359 errcode_t retval; 360 361 /* If fs is null, clean up the static buffer and return */ 362 if (!fs) { 363 if (buf) { 364 free(buf); 365 buf = 0; 366 } 367 return 0; 368 } 369 /* Allocate the zeroizing buffer if necessary */ 370 if (!buf) { 371 buf = malloc(fs->blocksize * STRIDE_LENGTH); 372 if (!buf) { 373 com_err("malloc", ENOMEM, 374 _("while allocating zeroizing buffer")); 375 exit(1); 376 } 377 memset(buf, 0, fs->blocksize * STRIDE_LENGTH); 378 } 379 /* OK, do the write loop */ 380 next_update = 0; 381 next_update_incr = num / 100; 382 if (next_update_incr < 1) 383 next_update_incr = 1; 384 for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) { 385 count = num - j; 386 if (count > STRIDE_LENGTH) 387 count = STRIDE_LENGTH; 388 retval = io_channel_write_blk(fs->io, blk, count, buf); 389 if (retval) { 390 if (ret_count) 391 *ret_count = count; 392 if (ret_blk) 393 *ret_blk = blk; 394 return retval; 395 } 396 if (progress && j > next_update) { 397 next_update += num / 100; 398 progress_update(progress, blk); 399 } 400 } 401 return 0; 402 } 403 404 static void write_inode_tables(ext2_filsys fs) 405 { 406 errcode_t retval; 407 blk_t blk; 408 dgrp_t i; 409 int num; 410 struct progress_struct progress; 411 int lazy_flag = 0; 412 413 if (quiet) 414 memset(&progress, 0, sizeof(progress)); 415 else 416 progress_init(&progress, _("Writing inode tables: "), 417 fs->group_desc_count); 418 419 if (EXT2_HAS_COMPAT_FEATURE(fs->super, 420 EXT2_FEATURE_COMPAT_LAZY_BG)) 421 lazy_flag = 1; 422 423 for (i = 0; i < fs->group_desc_count; i++) { 424 progress_update(&progress, i); 425 426 blk = fs->group_desc[i].bg_inode_table; 427 num = fs->inode_blocks_per_group; 428 429 if (!(lazy_flag && 430 (fs->group_desc[i].bg_flags & EXT2_BG_INODE_UNINIT))) { 431 retval = zero_blocks(fs, blk, num, 0, &blk, &num); 432 if (retval) { 433 fprintf(stderr, _("\nCould not write %d " 434 "blocks in inode table starting at %u: %s\n"), 435 num, blk, error_message(retval)); 436 exit(1); 437 } 438 } 439 if (sync_kludge) { 440 if (sync_kludge == 1) 441 sync(); 442 else if ((i % sync_kludge) == 0) 443 sync(); 444 } 445 } 446 zero_blocks(0, 0, 0, 0, 0, 0); 447 progress_close(&progress); 448 } 449 450 static void setup_lazy_bg(ext2_filsys fs) 451 { 452 dgrp_t i; 453 int blks; 454 struct ext2_super_block *sb = fs->super; 455 struct ext2_group_desc *bg = fs->group_desc; 456 457 if (EXT2_HAS_COMPAT_FEATURE(fs->super, 458 EXT2_FEATURE_COMPAT_LAZY_BG)) { 459 for (i = 0; i < fs->group_desc_count; i++, bg++) { 460 if ((i == 0) || 461 (i == fs->group_desc_count-1)) 462 continue; 463 if (bg->bg_free_inodes_count == 464 sb->s_inodes_per_group) { 465 bg->bg_free_inodes_count = 0; 466 bg->bg_flags |= EXT2_BG_INODE_UNINIT; 467 sb->s_free_inodes_count -= 468 sb->s_inodes_per_group; 469 } 470 blks = ext2fs_super_and_bgd_loc(fs, i, 0, 0, 0, 0); 471 if (bg->bg_free_blocks_count == blks) { 472 bg->bg_free_blocks_count = 0; 473 bg->bg_flags |= EXT2_BG_BLOCK_UNINIT; 474 sb->s_free_blocks_count -= blks; 475 } 476 } 477 } 478 } 479 480 481 static void create_root_dir(ext2_filsys fs) 482 { 483 errcode_t retval; 484 struct ext2_inode inode; 485 __u32 uid, gid; 486 487 retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0); 488 if (retval) { 489 com_err("ext2fs_mkdir", retval, _("while creating root dir")); 490 exit(1); 491 } 492 if (geteuid()) { 493 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode); 494 if (retval) { 495 com_err("ext2fs_read_inode", retval, 496 _("while reading root inode")); 497 exit(1); 498 } 499 uid = getuid(); 500 inode.i_uid = uid; 501 ext2fs_set_i_uid_high(inode, uid >> 16); 502 if (uid) { 503 gid = getgid(); 504 inode.i_gid = gid; 505 ext2fs_set_i_gid_high(inode, gid >> 16); 506 } 507 retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode); 508 if (retval) { 509 com_err("ext2fs_write_inode", retval, 510 _("while setting root inode ownership")); 511 exit(1); 512 } 513 } 514 } 515 516 static void create_lost_and_found(ext2_filsys fs) 517 { 518 errcode_t retval; 519 ext2_ino_t ino; 520 const char *name = "lost+found"; 521 int i; 522 int lpf_size = 0; 523 524 fs->umask = 077; 525 retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name); 526 if (retval) { 527 com_err("ext2fs_mkdir", retval, 528 _("while creating /lost+found")); 529 exit(1); 530 } 531 532 retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino); 533 if (retval) { 534 com_err("ext2_lookup", retval, 535 _("while looking up /lost+found")); 536 exit(1); 537 } 538 539 for (i=1; i < EXT2_NDIR_BLOCKS; i++) { 540 if ((lpf_size += fs->blocksize) >= 16*1024) 541 break; 542 retval = ext2fs_expand_dir(fs, ino); 543 if (retval) { 544 com_err("ext2fs_expand_dir", retval, 545 _("while expanding /lost+found")); 546 exit(1); 547 } 548 } 549 } 550 551 static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list) 552 { 553 errcode_t retval; 554 555 ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO); 556 fs->group_desc[0].bg_free_inodes_count--; 557 fs->super->s_free_inodes_count--; 558 retval = ext2fs_update_bb_inode(fs, bb_list); 559 if (retval) { 560 com_err("ext2fs_update_bb_inode", retval, 561 _("while setting bad block inode")); 562 exit(1); 563 } 564 565 } 566 567 static void reserve_inodes(ext2_filsys fs) 568 { 569 ext2_ino_t i; 570 int group; 571 572 for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) { 573 ext2fs_mark_inode_bitmap(fs->inode_map, i); 574 group = ext2fs_group_of_ino(fs, i); 575 fs->group_desc[group].bg_free_inodes_count--; 576 fs->super->s_free_inodes_count--; 577 } 578 ext2fs_mark_ib_dirty(fs); 579 } 580 581 #define BSD_DISKMAGIC (0x82564557UL) /* The disk magic number */ 582 #define BSD_MAGICDISK (0x57455682UL) /* The disk magic number reversed */ 583 #define BSD_LABEL_OFFSET 64 584 585 static void zap_sector(ext2_filsys fs, int sect, int nsect) 586 { 587 char *buf; 588 int retval; 589 unsigned int *magic; 590 591 buf = malloc(512*nsect); 592 if (!buf) { 593 printf(_("Out of memory erasing sectors %d-%d\n"), 594 sect, sect + nsect - 1); 595 exit(1); 596 } 597 598 if (sect == 0) { 599 /* Check for a BSD disklabel, and don't erase it if so */ 600 retval = io_channel_read_blk(fs->io, 0, -512, buf); 601 if (retval) 602 fprintf(stderr, 603 _("Warning: could not read block 0: %s\n"), 604 error_message(retval)); 605 else { 606 magic = (unsigned int *) (buf + BSD_LABEL_OFFSET); 607 if ((*magic == BSD_DISKMAGIC) || 608 (*magic == BSD_MAGICDISK)) 609 return; 610 } 611 } 612 613 memset(buf, 0, 512*nsect); 614 io_channel_set_blksize(fs->io, 512); 615 retval = io_channel_write_blk(fs->io, sect, -512*nsect, buf); 616 io_channel_set_blksize(fs->io, fs->blocksize); 617 free(buf); 618 if (retval) 619 fprintf(stderr, _("Warning: could not erase sector %d: %s\n"), 620 sect, error_message(retval)); 621 } 622 623 static void create_journal_dev(ext2_filsys fs) 624 { 625 struct progress_struct progress; 626 errcode_t retval; 627 char *buf; 628 blk_t blk; 629 int count; 630 631 retval = ext2fs_create_journal_superblock(fs, 632 fs->super->s_blocks_count, 0, &buf); 633 if (retval) { 634 com_err("create_journal_dev", retval, 635 _("while initializing journal superblock")); 636 exit(1); 637 } 638 if (quiet) 639 memset(&progress, 0, sizeof(progress)); 640 else 641 progress_init(&progress, _("Zeroing journal device: "), 642 fs->super->s_blocks_count); 643 644 retval = zero_blocks(fs, 0, fs->super->s_blocks_count, 645 &progress, &blk, &count); 646 if (retval) { 647 com_err("create_journal_dev", retval, 648 _("while zeroing journal device (block %u, count %d)"), 649 blk, count); 650 exit(1); 651 } 652 zero_blocks(0, 0, 0, 0, 0, 0); 653 654 retval = io_channel_write_blk(fs->io, 655 fs->super->s_first_data_block+1, 656 1, buf); 657 if (retval) { 658 com_err("create_journal_dev", retval, 659 _("while writing journal superblock")); 660 exit(1); 661 } 662 progress_close(&progress); 663 } 664 665 static void show_stats(ext2_filsys fs) 666 { 667 struct ext2_super_block *s = fs->super; 668 char buf[80]; 669 char *os; 670 blk_t group_block; 671 dgrp_t i; 672 int need, col_left; 673 674 if (fs_param.s_blocks_count != s->s_blocks_count) 675 fprintf(stderr, _("warning: %u blocks unused.\n\n"), 676 fs_param.s_blocks_count - s->s_blocks_count); 677 678 memset(buf, 0, sizeof(buf)); 679 strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name)); 680 printf(_("Filesystem label=%s\n"), buf); 681 fputs(_("OS type: "), stdout); 682 os = e2p_os2string(fs->super->s_creator_os); 683 fputs(os, stdout); 684 free(os); 685 printf("\n"); 686 printf(_("Block size=%u (log=%u)\n"), fs->blocksize, 687 s->s_log_block_size); 688 printf(_("Fragment size=%u (log=%u)\n"), fs->fragsize, 689 s->s_log_frag_size); 690 printf(_("%u inodes, %u blocks\n"), s->s_inodes_count, 691 s->s_blocks_count); 692 printf(_("%u blocks (%2.2f%%) reserved for the super user\n"), 693 s->s_r_blocks_count, 694 100.0 * s->s_r_blocks_count / s->s_blocks_count); 695 printf(_("First data block=%u\n"), s->s_first_data_block); 696 if (s->s_reserved_gdt_blocks) 697 printf(_("Maximum filesystem blocks=%lu\n"), 698 (s->s_reserved_gdt_blocks + fs->desc_blocks) * 699 (fs->blocksize / sizeof(struct ext2_group_desc)) * 700 s->s_blocks_per_group); 701 if (fs->group_desc_count > 1) 702 printf(_("%u block groups\n"), fs->group_desc_count); 703 else 704 printf(_("%u block group\n"), fs->group_desc_count); 705 printf(_("%u blocks per group, %u fragments per group\n"), 706 s->s_blocks_per_group, s->s_frags_per_group); 707 printf(_("%u inodes per group\n"), s->s_inodes_per_group); 708 709 if (fs->group_desc_count == 1) { 710 printf("\n"); 711 return; 712 } 713 714 printf(_("Superblock backups stored on blocks: ")); 715 group_block = s->s_first_data_block; 716 col_left = 0; 717 for (i = 1; i < fs->group_desc_count; i++) { 718 group_block += s->s_blocks_per_group; 719 if (!ext2fs_bg_has_super(fs, i)) 720 continue; 721 if (i != 1) 722 printf(", "); 723 need = int_log10(group_block) + 2; 724 if (need > col_left) { 725 printf("\n\t"); 726 col_left = 72; 727 } 728 col_left -= need; 729 printf("%u", group_block); 730 } 731 printf("\n\n"); 732 } 733 734 /* 735 * Set the S_CREATOR_OS field. Return true if OS is known, 736 * otherwise, 0. 737 */ 738 static int set_os(struct ext2_super_block *sb, char *os) 739 { 740 if (isdigit (*os)) 741 sb->s_creator_os = atoi (os); 742 else if (strcasecmp(os, "linux") == 0) 743 sb->s_creator_os = EXT2_OS_LINUX; 744 else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0) 745 sb->s_creator_os = EXT2_OS_HURD; 746 else if (strcasecmp(os, "masix") == 0) 747 sb->s_creator_os = EXT2_OS_MASIX; 748 else if (strcasecmp(os, "freebsd") == 0) 749 sb->s_creator_os = EXT2_OS_FREEBSD; 750 else if (strcasecmp(os, "lites") == 0) 751 sb->s_creator_os = EXT2_OS_LITES; 752 else 753 return 0; 754 return 1; 755 } 756 757 #define PATH_SET "PATH=/sbin" 758 759 static void parse_extended_opts(struct ext2_super_block *param, 760 const char *opts) 761 { 762 char *buf, *token, *next, *p, *arg, *badopt = ""; 763 int len; 764 int r_usage = 0; 765 766 len = strlen(opts); 767 buf = malloc(len+1); 768 if (!buf) { 769 fprintf(stderr, 770 _("Couldn't allocate memory to parse options!\n")); 771 exit(1); 772 } 773 strcpy(buf, opts); 774 for (token = buf; token && *token; token = next) { 775 p = strchr(token, ','); 776 next = 0; 777 if (p) { 778 *p = 0; 779 next = p+1; 780 } 781 arg = strchr(token, '='); 782 if (arg) { 783 *arg = 0; 784 arg++; 785 } 786 if (strcmp(token, "stride") == 0) { 787 if (!arg) { 788 r_usage++; 789 badopt = token; 790 continue; 791 } 792 param->s_raid_stride = strtoul(arg, &p, 0); 793 if (*p || (param->s_raid_stride == 0)) { 794 fprintf(stderr, 795 _("Invalid stride parameter: %s\n"), 796 arg); 797 r_usage++; 798 continue; 799 } 800 } else if (strcmp(token, "stripe-width") == 0 || 801 strcmp(token, "stripe_width") == 0) { 802 if (!arg) { 803 r_usage++; 804 badopt = token; 805 continue; 806 } 807 param->s_raid_stripe_width = strtoul(arg, &p, 0); 808 if (*p || (param->s_raid_stripe_width == 0)) { 809 fprintf(stderr, 810 _("Invalid stripe-width parameter: %s\n"), 811 arg); 812 r_usage++; 813 continue; 814 } 815 } else if (!strcmp(token, "resize")) { 816 unsigned long resize, bpg, rsv_groups; 817 unsigned long group_desc_count, desc_blocks; 818 unsigned int gdpb, blocksize; 819 int rsv_gdb; 820 821 if (!arg) { 822 r_usage++; 823 badopt = token; 824 continue; 825 } 826 827 resize = parse_num_blocks(arg, 828 param->s_log_block_size); 829 830 if (resize == 0) { 831 fprintf(stderr, 832 _("Invalid resize parameter: %s\n"), 833 arg); 834 r_usage++; 835 continue; 836 } 837 if (resize <= param->s_blocks_count) { 838 fprintf(stderr, 839 _("The resize maximum must be greater " 840 "than the filesystem size.\n")); 841 r_usage++; 842 continue; 843 } 844 845 blocksize = EXT2_BLOCK_SIZE(param); 846 bpg = param->s_blocks_per_group; 847 if (!bpg) 848 bpg = blocksize * 8; 849 gdpb = blocksize / sizeof(struct ext2_group_desc); 850 group_desc_count = 851 ext2fs_div_ceil(param->s_blocks_count, bpg); 852 desc_blocks = (group_desc_count + 853 gdpb - 1) / gdpb; 854 rsv_groups = ext2fs_div_ceil(resize, bpg); 855 rsv_gdb = ext2fs_div_ceil(rsv_groups, gdpb) - 856 desc_blocks; 857 if (rsv_gdb > (int) EXT2_ADDR_PER_BLOCK(param)) 858 rsv_gdb = EXT2_ADDR_PER_BLOCK(param); 859 860 if (rsv_gdb > 0) { 861 if (param->s_rev_level == EXT2_GOOD_OLD_REV) { 862 fprintf(stderr, 863 _("On-line resizing not supported with revision 0 filesystems\n")); 864 free(buf); 865 exit(1); 866 } 867 param->s_feature_compat |= 868 EXT2_FEATURE_COMPAT_RESIZE_INODE; 869 870 param->s_reserved_gdt_blocks = rsv_gdb; 871 } 872 } else if (!strcmp(token, "test_fs")) { 873 param->s_flags |= EXT2_FLAGS_TEST_FILESYS; 874 } else { 875 r_usage++; 876 badopt = token; 877 } 878 } 879 if (r_usage) { 880 fprintf(stderr, _("\nBad option(s) specified: %s\n\n" 881 "Extended options are separated by commas, " 882 "and may take an argument which\n" 883 "\tis set off by an equals ('=') sign.\n\n" 884 "Valid extended options are:\n" 885 "\tstride=<RAID per-disk data chunk in blocks>\n" 886 "\tstripe-width=<RAID stride * data disks in blocks>\n" 887 "\tresize=<resize maximum size in blocks>\n\n" 888 "\ttest_fs\n"), 889 badopt); 890 free(buf); 891 exit(1); 892 } 893 if (param->s_raid_stride && 894 (param->s_raid_stripe_width % param->s_raid_stride) != 0) 895 fprintf(stderr, _("\nWarning: RAID stripe-width %u not an even " 896 "multiple of stride %u.\n\n"), 897 param->s_raid_stripe_width, param->s_raid_stride); 898 899 free(buf); 900 } 901 902 static __u32 ok_features[3] = { 903 /* Compat */ 904 EXT3_FEATURE_COMPAT_HAS_JOURNAL | 905 EXT2_FEATURE_COMPAT_RESIZE_INODE | 906 EXT2_FEATURE_COMPAT_DIR_INDEX | 907 EXT2_FEATURE_COMPAT_LAZY_BG | 908 EXT2_FEATURE_COMPAT_EXT_ATTR, 909 /* Incompat */ 910 EXT2_FEATURE_INCOMPAT_FILETYPE| 911 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV| 912 EXT2_FEATURE_INCOMPAT_META_BG, 913 /* R/O compat */ 914 EXT2_FEATURE_RO_COMPAT_LARGE_FILE| 915 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 916 }; 917 918 919 static void syntax_err_report(const char *filename, long err, int line_num) 920 { 921 fprintf(stderr, 922 _("Syntax error in mke2fs config file (%s, line #%d)\n\t%s\n"), 923 filename, line_num, error_message(err)); 924 exit(1); 925 } 926 927 #ifndef ROOT_SYSCONFDIR 928 #define ROOT_SYSCONFDIR "/etc" 929 #endif 930 static const char *config_fn[] = { ROOT_SYSCONFDIR "/mke2fs.conf", 0 }; 931 932 static void edit_feature(const char *str, __u32 *compat_array) 933 { 934 if (!str) 935 return; 936 937 if (e2p_edit_feature(str, compat_array, ok_features)) { 938 fprintf(stderr, _("Invalid filesystem option set: %s\n"), 939 str); 940 exit(1); 941 } 942 } 943 944 extern const char *mke2fs_default_profile; 945 static const char *default_files[] = { "<default>", 0 }; 946 947 static void PRS(int argc, char *argv[]) 948 { 949 int b, c; 950 int size; 951 char *tmp, *tmp2; 952 int blocksize = 0; 953 int inode_ratio = 0; 954 int inode_size = 0; 955 double reserved_ratio = 5.0; 956 int sector_size = 0; 957 int show_version_only = 0; 958 unsigned long long num_inodes = 0; /* unsigned long long to catch too-large input */ 959 errcode_t retval; 960 char * oldpath = getenv("PATH"); 961 char * extended_opts = 0; 962 const char * fs_type = 0; 963 blk_t dev_size; 964 #ifdef __linux__ 965 struct utsname ut; 966 #endif 967 long sysval; 968 int s_opt = -1, r_opt = -1; 969 char *fs_features = 0; 970 int use_bsize; 971 char *newpath; 972 int pathlen = sizeof(PATH_SET) + 1; 973 974 if (oldpath) 975 pathlen += strlen(oldpath); 976 newpath = malloc(pathlen); 977 strcpy(newpath, PATH_SET); 978 979 /* Update our PATH to include /sbin */ 980 if (oldpath) { 981 strcat (newpath, ":"); 982 strcat (newpath, oldpath); 983 } 984 putenv (newpath); 985 986 tmp = getenv("MKE2FS_SYNC"); 987 if (tmp) 988 sync_kludge = atoi(tmp); 989 990 /* Determine the system page size if possible */ 991 #ifdef HAVE_SYSCONF 992 #if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE)) 993 #define _SC_PAGESIZE _SC_PAGE_SIZE 994 #endif 995 #ifdef _SC_PAGESIZE 996 sysval = sysconf(_SC_PAGESIZE); 997 if (sysval > 0) 998 sys_page_size = sysval; 999 #endif /* _SC_PAGESIZE */ 1000 #endif /* HAVE_SYSCONF */ 1001 1002 if ((tmp = getenv("MKE2FS_CONFIG")) != NULL) 1003 config_fn[0] = tmp; 1004 profile_set_syntax_err_cb(syntax_err_report); 1005 retval = profile_init(config_fn, &profile); 1006 if (retval == ENOENT) { 1007 profile_init(default_files, &profile); 1008 profile_set_default(profile, mke2fs_default_profile); 1009 } 1010 1011 setbuf(stdout, NULL); 1012 setbuf(stderr, NULL); 1013 add_error_table(&et_ext2_error_table); 1014 add_error_table(&et_prof_error_table); 1015 memset(&fs_param, 0, sizeof(struct ext2_super_block)); 1016 fs_param.s_rev_level = 1; /* Create revision 1 filesystems now */ 1017 1018 #ifdef __linux__ 1019 if (uname(&ut)) { 1020 perror("uname"); 1021 exit(1); 1022 } 1023 linux_version_code = parse_version_number(ut.release); 1024 if (linux_version_code && linux_version_code < (2*65536 + 2*256)) 1025 fs_param.s_rev_level = 0; 1026 #endif 1027 1028 if (argc && *argv) { 1029 program_name = get_progname(*argv); 1030 1031 /* If called as mkfs.ext3, create a journal inode */ 1032 if (!strcmp(program_name, "mkfs.ext3")) 1033 journal_size = -1; 1034 } 1035 1036 while ((c = getopt (argc, argv, 1037 "b:cf:g:i:jl:m:no:qr:s:tvE:FI:J:L:M:N:O:R:ST:V")) != EOF) { 1038 switch (c) { 1039 case 'b': 1040 blocksize = strtol(optarg, &tmp, 0); 1041 b = (blocksize > 0) ? blocksize : -blocksize; 1042 if (b < EXT2_MIN_BLOCK_SIZE || 1043 b > EXT2_MAX_BLOCK_SIZE || *tmp) { 1044 com_err(program_name, 0, 1045 _("invalid block size - %s"), optarg); 1046 exit(1); 1047 } 1048 if (blocksize > 4096) 1049 fprintf(stderr, _("Warning: blocksize %d not " 1050 "usable on most systems.\n"), 1051 blocksize); 1052 if (blocksize > 0) 1053 fs_param.s_log_block_size = 1054 int_log2(blocksize >> 1055 EXT2_MIN_BLOCK_LOG_SIZE); 1056 break; 1057 case 'c': /* Check for bad blocks */ 1058 case 't': /* deprecated */ 1059 #ifndef NO_CHECK_BB 1060 cflag++; 1061 #else 1062 com_err(program_name, 0, _("check for bad blocks disabled")); 1063 exit(1); 1064 #endif 1065 break; 1066 case 'f': 1067 size = strtoul(optarg, &tmp, 0); 1068 if (size < EXT2_MIN_BLOCK_SIZE || 1069 size > EXT2_MAX_BLOCK_SIZE || *tmp) { 1070 com_err(program_name, 0, 1071 _("invalid fragment size - %s"), 1072 optarg); 1073 exit(1); 1074 } 1075 fs_param.s_log_frag_size = 1076 int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE); 1077 fprintf(stderr, _("Warning: fragments not supported. " 1078 "Ignoring -f option\n")); 1079 break; 1080 case 'g': 1081 fs_param.s_blocks_per_group = strtoul(optarg, &tmp, 0); 1082 if (*tmp) { 1083 com_err(program_name, 0, 1084 _("Illegal number for blocks per group")); 1085 exit(1); 1086 } 1087 if ((fs_param.s_blocks_per_group % 8) != 0) { 1088 com_err(program_name, 0, 1089 _("blocks per group must be multiple of 8")); 1090 exit(1); 1091 } 1092 break; 1093 case 'i': 1094 inode_ratio = strtoul(optarg, &tmp, 0); 1095 if (inode_ratio < EXT2_MIN_BLOCK_SIZE || 1096 inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024 || 1097 *tmp) { 1098 com_err(program_name, 0, 1099 _("invalid inode ratio %s (min %d/max %d)"), 1100 optarg, EXT2_MIN_BLOCK_SIZE, 1101 EXT2_MAX_BLOCK_SIZE); 1102 exit(1); 1103 } 1104 break; 1105 case 'J': 1106 parse_journal_opts(optarg); 1107 break; 1108 case 'j': 1109 if (!journal_size) 1110 journal_size = -1; 1111 break; 1112 case 'l': 1113 bad_blocks_filename = malloc(strlen(optarg)+1); 1114 if (!bad_blocks_filename) { 1115 com_err(program_name, ENOMEM, 1116 _("in malloc for bad_blocks_filename")); 1117 exit(1); 1118 } 1119 strcpy(bad_blocks_filename, optarg); 1120 break; 1121 case 'm': 1122 reserved_ratio = strtod(optarg, &tmp); 1123 if (reserved_ratio > 50 || *tmp) { 1124 com_err(program_name, 0, 1125 _("invalid reserved blocks percent - %s"), 1126 optarg); 1127 exit(1); 1128 } 1129 break; 1130 case 'n': 1131 noaction++; 1132 break; 1133 case 'o': 1134 creator_os = optarg; 1135 break; 1136 case 'q': 1137 quiet = 1; 1138 break; 1139 case 'r': 1140 r_opt = strtoul(optarg, &tmp, 0); 1141 if (*tmp) { 1142 com_err(program_name, 0, 1143 _("bad revision level - %s"), optarg); 1144 exit(1); 1145 } 1146 fs_param.s_rev_level = r_opt; 1147 break; 1148 case 's': /* deprecated */ 1149 s_opt = atoi(optarg); 1150 break; 1151 case 'I': 1152 inode_size = strtoul(optarg, &tmp, 0); 1153 if (*tmp) { 1154 com_err(program_name, 0, 1155 _("invalid inode size - %s"), optarg); 1156 exit(1); 1157 } 1158 break; 1159 case 'v': 1160 verbose = 1; 1161 break; 1162 case 'F': 1163 force++; 1164 break; 1165 case 'L': 1166 volume_label = optarg; 1167 break; 1168 case 'M': 1169 mount_dir = optarg; 1170 break; 1171 case 'N': 1172 num_inodes = strtoul(optarg, &tmp, 0); 1173 if (*tmp) { 1174 com_err(program_name, 0, 1175 _("bad num inodes - %s"), optarg); 1176 exit(1); 1177 } 1178 break; 1179 case 'O': 1180 fs_features = optarg; 1181 break; 1182 case 'E': 1183 case 'R': 1184 extended_opts = optarg; 1185 break; 1186 case 'S': 1187 super_only = 1; 1188 break; 1189 case 'T': 1190 fs_type = optarg; 1191 break; 1192 case 'V': 1193 /* Print version number and exit */ 1194 show_version_only++; 1195 break; 1196 default: 1197 usage(); 1198 } 1199 } 1200 if ((optind == argc) && !show_version_only) 1201 usage(); 1202 device_name = argv[optind++]; 1203 1204 if (!quiet || show_version_only) 1205 fprintf (stderr, "mke2fs %s (%s)\n", E2FSPROGS_VERSION, 1206 E2FSPROGS_DATE); 1207 1208 if (show_version_only) { 1209 fprintf(stderr, _("\tUsing %s\n"), 1210 error_message(EXT2_ET_BASE)); 1211 exit(0); 1212 } 1213 1214 /* 1215 * If there's no blocksize specified and there is a journal 1216 * device, use it to figure out the blocksize 1217 */ 1218 if (blocksize <= 0 && journal_device) { 1219 ext2_filsys jfs; 1220 io_manager io_ptr; 1221 1222 #ifdef CONFIG_TESTIO_DEBUG 1223 io_ptr = test_io_manager; 1224 test_io_backing_manager = unix_io_manager; 1225 #else 1226 io_ptr = unix_io_manager; 1227 #endif 1228 retval = ext2fs_open(journal_device, 1229 EXT2_FLAG_JOURNAL_DEV_OK, 0, 1230 0, io_ptr, &jfs); 1231 if (retval) { 1232 com_err(program_name, retval, 1233 _("while trying to open journal device %s\n"), 1234 journal_device); 1235 exit(1); 1236 } 1237 if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) { 1238 com_err(program_name, 0, 1239 _("Journal dev blocksize (%d) smaller than " 1240 "minimum blocksize %d\n"), jfs->blocksize, 1241 -blocksize); 1242 exit(1); 1243 } 1244 blocksize = jfs->blocksize; 1245 fs_param.s_log_block_size = 1246 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE); 1247 ext2fs_close(jfs); 1248 } 1249 1250 if (blocksize > sys_page_size) { 1251 if (!force) { 1252 com_err(program_name, 0, 1253 _("%d-byte blocks too big for system (max %d)"), 1254 blocksize, sys_page_size); 1255 proceed_question(); 1256 } 1257 fprintf(stderr, _("Warning: %d-byte blocks too big for system " 1258 "(max %d), forced to continue\n"), 1259 blocksize, sys_page_size); 1260 } 1261 if (optind < argc) { 1262 fs_param.s_blocks_count = parse_num_blocks(argv[optind++], 1263 fs_param.s_log_block_size); 1264 if (!fs_param.s_blocks_count) { 1265 com_err(program_name, 0, _("invalid blocks count - %s"), 1266 argv[optind - 1]); 1267 exit(1); 1268 } 1269 } 1270 if (optind < argc) 1271 usage(); 1272 1273 if (!force) 1274 check_plausibility(device_name); 1275 check_mount(device_name, force, _("filesystem")); 1276 1277 fs_param.s_log_frag_size = fs_param.s_log_block_size; 1278 1279 if (noaction && fs_param.s_blocks_count) { 1280 dev_size = fs_param.s_blocks_count; 1281 retval = 0; 1282 } else { 1283 retry: 1284 retval = ext2fs_get_device_size(device_name, 1285 EXT2_BLOCK_SIZE(&fs_param), 1286 &dev_size); 1287 if ((retval == EFBIG) && 1288 (blocksize == 0) && 1289 (fs_param.s_log_block_size == 0)) { 1290 fs_param.s_log_block_size = 2; 1291 blocksize = 4096; 1292 goto retry; 1293 } 1294 } 1295 1296 if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) { 1297 com_err(program_name, retval, 1298 _("while trying to determine filesystem size")); 1299 exit(1); 1300 } 1301 if (!fs_param.s_blocks_count) { 1302 if (retval == EXT2_ET_UNIMPLEMENTED) { 1303 com_err(program_name, 0, 1304 _("Couldn't determine device size; you " 1305 "must specify\nthe size of the " 1306 "filesystem\n")); 1307 exit(1); 1308 } else { 1309 if (dev_size == 0) { 1310 com_err(program_name, 0, 1311 _("Device size reported to be zero. " 1312 "Invalid partition specified, or\n\t" 1313 "partition table wasn't reread " 1314 "after running fdisk, due to\n\t" 1315 "a modified partition being busy " 1316 "and in use. You may need to reboot\n\t" 1317 "to re-read your partition table.\n" 1318 )); 1319 exit(1); 1320 } 1321 fs_param.s_blocks_count = dev_size; 1322 if (sys_page_size > EXT2_BLOCK_SIZE(&fs_param)) 1323 fs_param.s_blocks_count &= ~((sys_page_size / 1324 EXT2_BLOCK_SIZE(&fs_param))-1); 1325 } 1326 1327 } else if (!force && (fs_param.s_blocks_count > dev_size)) { 1328 com_err(program_name, 0, 1329 _("Filesystem larger than apparent device size.")); 1330 proceed_question(); 1331 } 1332 1333 if (!fs_type) { 1334 int megs = (__u64)fs_param.s_blocks_count * 1335 (EXT2_BLOCK_SIZE(&fs_param) / 1024) / 1024; 1336 1337 if (fs_param.s_feature_incompat & 1338 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) 1339 fs_type = "journal"; 1340 else if (megs <= 3) 1341 fs_type = "floppy"; 1342 else if (megs <= 512) 1343 fs_type = "small"; 1344 else 1345 fs_type = "default"; 1346 } 1347 1348 /* Figure out what features should be enabled */ 1349 1350 tmp = tmp2 = NULL; 1351 if (fs_param.s_rev_level != EXT2_GOOD_OLD_REV) { 1352 profile_get_string(profile, "defaults", "base_features", 0, 1353 "sparse_super,filetype,resize_inode,dir_index", 1354 &tmp); 1355 profile_get_string(profile, "fs_types", fs_type, 1356 "base_features", tmp, &tmp2); 1357 edit_feature(tmp2, &fs_param.s_feature_compat); 1358 free(tmp); 1359 free(tmp2); 1360 1361 tmp = tmp2 = NULL; 1362 profile_get_string(profile, "defaults", "default_features", 0, 1363 "", &tmp); 1364 profile_get_string(profile, "fs_types", fs_type, 1365 "default_features", tmp, &tmp2); 1366 } 1367 edit_feature(fs_features ? fs_features : tmp2, 1368 &fs_param.s_feature_compat); 1369 if (tmp) 1370 free(tmp); 1371 if (tmp2) 1372 free(tmp2); 1373 1374 if (r_opt == EXT2_GOOD_OLD_REV && 1375 (fs_param.s_feature_compat || fs_param.s_feature_incompat || 1376 fs_param.s_feature_incompat)) { 1377 fprintf(stderr, _("Filesystem features not supported " 1378 "with revision 0 filesystems\n")); 1379 exit(1); 1380 } 1381 1382 if (s_opt > 0) { 1383 if (r_opt == EXT2_GOOD_OLD_REV) { 1384 fprintf(stderr, _("Sparse superblocks not supported " 1385 "with revision 0 filesystems\n")); 1386 exit(1); 1387 } 1388 fs_param.s_feature_ro_compat |= 1389 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 1390 } else if (s_opt == 0) 1391 fs_param.s_feature_ro_compat &= 1392 ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 1393 1394 if (journal_size != 0) { 1395 if (r_opt == EXT2_GOOD_OLD_REV) { 1396 fprintf(stderr, _("Journals not supported " 1397 "with revision 0 filesystems\n")); 1398 exit(1); 1399 } 1400 fs_param.s_feature_compat |= 1401 EXT3_FEATURE_COMPAT_HAS_JOURNAL; 1402 } 1403 1404 if (fs_param.s_feature_incompat & 1405 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { 1406 reserved_ratio = 0; 1407 fs_param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV; 1408 fs_param.s_feature_compat = 0; 1409 fs_param.s_feature_ro_compat = 0; 1410 } 1411 1412 /* Set first meta blockgroup via an environment variable */ 1413 /* (this is mostly for debugging purposes) */ 1414 if ((fs_param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) && 1415 ((tmp = getenv("MKE2FS_FIRST_META_BG")))) 1416 fs_param.s_first_meta_bg = atoi(tmp); 1417 1418 /* Get the hardware sector size, if available */ 1419 retval = ext2fs_get_device_sectsize(device_name, §or_size); 1420 if (retval) { 1421 com_err(program_name, retval, 1422 _("while trying to determine hardware sector size")); 1423 exit(1); 1424 } 1425 1426 if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL) 1427 sector_size = atoi(tmp); 1428 1429 if (blocksize <= 0) { 1430 profile_get_integer(profile, "defaults", "blocksize", 0, 1431 4096, &use_bsize); 1432 profile_get_integer(profile, "fs_types", fs_type, 1433 "blocksize", use_bsize, &use_bsize); 1434 1435 if (use_bsize == -1) { 1436 use_bsize = sys_page_size; 1437 if ((linux_version_code < (2*65536 + 6*256)) && 1438 (use_bsize > 4096)) 1439 use_bsize = 4096; 1440 } 1441 if (sector_size && use_bsize < sector_size) 1442 use_bsize = sector_size; 1443 if ((blocksize < 0) && (use_bsize < (-blocksize))) 1444 use_bsize = -blocksize; 1445 blocksize = use_bsize; 1446 fs_param.s_blocks_count /= blocksize / 1024; 1447 } 1448 1449 if (inode_ratio == 0) { 1450 profile_get_integer(profile, "defaults", "inode_ratio", 0, 1451 8192, &inode_ratio); 1452 profile_get_integer(profile, "fs_types", fs_type, 1453 "inode_ratio", inode_ratio, 1454 &inode_ratio); 1455 1456 if (inode_ratio < blocksize) 1457 inode_ratio = blocksize; 1458 } 1459 1460 fs_param.s_log_frag_size = fs_param.s_log_block_size = 1461 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE); 1462 1463 blocksize = EXT2_BLOCK_SIZE(&fs_param); 1464 1465 if (extended_opts) 1466 parse_extended_opts(&fs_param, extended_opts); 1467 1468 /* Since sparse_super is the default, we would only have a problem 1469 * here if it was explicitly disabled. 1470 */ 1471 if ((fs_param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) && 1472 !(fs_param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) { 1473 com_err(program_name, 0, 1474 _("reserved online resize blocks not supported " 1475 "on non-sparse filesystem")); 1476 exit(1); 1477 } 1478 1479 if (fs_param.s_blocks_per_group) { 1480 if (fs_param.s_blocks_per_group < 256 || 1481 fs_param.s_blocks_per_group > 8 * (unsigned) blocksize) { 1482 com_err(program_name, 0, 1483 _("blocks per group count out of range")); 1484 exit(1); 1485 } 1486 } 1487 1488 if (!force && fs_param.s_blocks_count >= ((unsigned) 1 << 31)) { 1489 com_err(program_name, 0, 1490 _("Filesystem too large. No more than 2**31-1 blocks\n" 1491 "\t (8TB using a blocksize of 4k) are currently supported.")); 1492 exit(1); 1493 } 1494 1495 if ((blocksize > 4096) && 1496 (fs_param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) 1497 fprintf(stderr, _("\nWarning: some 2.4 kernels do not support " 1498 "blocksizes greater than 4096\n\tusing ext3. " 1499 "Use -b 4096 if this is an issue for you.\n\n")); 1500 1501 if (inode_size == 0) { 1502 profile_get_integer(profile, "defaults", "inode_size", NULL, 1503 0, &inode_size); 1504 profile_get_integer(profile, "fs_types", fs_type, 1505 "inode_size", inode_size, 1506 &inode_size); 1507 } 1508 1509 if (inode_size && fs_param.s_rev_level >= EXT2_DYNAMIC_REV) { 1510 if (inode_size < EXT2_GOOD_OLD_INODE_SIZE || 1511 inode_size > EXT2_BLOCK_SIZE(&fs_param) || 1512 inode_size & (inode_size - 1)) { 1513 com_err(program_name, 0, 1514 _("invalid inode size %d (min %d/max %d)"), 1515 inode_size, EXT2_GOOD_OLD_INODE_SIZE, 1516 blocksize); 1517 exit(1); 1518 } 1519 if (inode_size != EXT2_GOOD_OLD_INODE_SIZE) 1520 fprintf(stderr, _("Warning: %d-byte inodes not usable " 1521 "on older systems\n"), 1522 inode_size); 1523 fs_param.s_inode_size = inode_size; 1524 } 1525 1526 /* Make sure number of inodes specified will fit in 32 bits */ 1527 if (num_inodes == 0) { 1528 unsigned long long n; 1529 n = (unsigned long long) fs_param.s_blocks_count * blocksize / inode_ratio; 1530 if (n > ~0U) { 1531 com_err(program_name, 0, 1532 _("too many inodes (%llu), raise inode ratio?"), n); 1533 exit(1); 1534 } 1535 } else if (num_inodes > ~0U) { 1536 com_err(program_name, 0, 1537 _("too many inodes (%llu), specify < 2^32 inodes"), 1538 num_inodes); 1539 exit(1); 1540 } 1541 /* 1542 * Calculate number of inodes based on the inode ratio 1543 */ 1544 fs_param.s_inodes_count = num_inodes ? num_inodes : 1545 ((__u64) fs_param.s_blocks_count * blocksize) 1546 / inode_ratio; 1547 1548 if ((((long long)fs_param.s_inodes_count) * 1549 (inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE)) >= 1550 (((long long)fs_param.s_blocks_count) * 1551 EXT2_BLOCK_SIZE(&fs_param))) { 1552 com_err(program_name, 0, _("inode_size (%u) * inodes_count " 1553 "(%u) too big for a\n\t" 1554 "filesystem with %lu blocks, " 1555 "specify higher inode_ratio (-i)\n\t" 1556 "or lower inode count (-N).\n"), 1557 inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE, 1558 fs_param.s_inodes_count, 1559 (unsigned long) fs_param.s_blocks_count); 1560 exit(1); 1561 } 1562 1563 /* 1564 * Calculate number of blocks to reserve 1565 */ 1566 fs_param.s_r_blocks_count = e2p_percent(reserved_ratio, 1567 fs_param.s_blocks_count); 1568 } 1569 1570 int main (int argc, char *argv[]) 1571 { 1572 errcode_t retval = 0; 1573 ext2_filsys fs; 1574 badblocks_list bb_list = 0; 1575 int journal_blocks; 1576 unsigned int i; 1577 int val; 1578 io_manager io_ptr; 1579 1580 #ifdef ENABLE_NLS 1581 setlocale(LC_MESSAGES, ""); 1582 setlocale(LC_CTYPE, ""); 1583 bindtextdomain(NLS_CAT_NAME, LOCALEDIR); 1584 textdomain(NLS_CAT_NAME); 1585 #endif 1586 PRS(argc, argv); 1587 1588 #ifdef CONFIG_TESTIO_DEBUG 1589 io_ptr = test_io_manager; 1590 test_io_backing_manager = unix_io_manager; 1591 #else 1592 io_ptr = unix_io_manager; 1593 #endif 1594 1595 /* 1596 * Initialize the superblock.... 1597 */ 1598 retval = ext2fs_initialize(device_name, EXT2_FLAG_EXCLUSIVE, &fs_param, 1599 io_ptr, &fs); 1600 if (retval) { 1601 com_err(device_name, retval, _("while setting up superblock")); 1602 exit(1); 1603 } 1604 1605 if (fs_param.s_flags & EXT2_FLAGS_TEST_FILESYS) 1606 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS; 1607 1608 /* 1609 * Wipe out the old on-disk superblock 1610 */ 1611 if (!noaction) 1612 zap_sector(fs, 2, 6); 1613 1614 /* 1615 * Generate a UUID for it... 1616 */ 1617 uuid_generate(fs->super->s_uuid); 1618 1619 /* 1620 * Initialize the directory index variables 1621 */ 1622 fs->super->s_def_hash_version = EXT2_HASH_TEA; 1623 uuid_generate((unsigned char *) fs->super->s_hash_seed); 1624 1625 /* 1626 * Add "jitter" to the superblock's check interval so that we 1627 * don't check all the filesystems at the same time. We use a 1628 * kludgy hack of using the UUID to derive a random jitter value. 1629 */ 1630 for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++) 1631 val += fs->super->s_uuid[i]; 1632 fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT; 1633 1634 /* 1635 * Override the creator OS, if applicable 1636 */ 1637 if (creator_os && !set_os(fs->super, creator_os)) { 1638 com_err (program_name, 0, _("unknown os - %s"), creator_os); 1639 exit(1); 1640 } 1641 1642 /* 1643 * For the Hurd, we will turn off filetype since it doesn't 1644 * support it. 1645 */ 1646 if (fs->super->s_creator_os == EXT2_OS_HURD) 1647 fs->super->s_feature_incompat &= 1648 ~EXT2_FEATURE_INCOMPAT_FILETYPE; 1649 1650 /* 1651 * Set the volume label... 1652 */ 1653 if (volume_label) { 1654 memset(fs->super->s_volume_name, 0, 1655 sizeof(fs->super->s_volume_name)); 1656 strncpy(fs->super->s_volume_name, volume_label, 1657 sizeof(fs->super->s_volume_name)); 1658 } 1659 1660 /* 1661 * Set the last mount directory 1662 */ 1663 if (mount_dir) { 1664 memset(fs->super->s_last_mounted, 0, 1665 sizeof(fs->super->s_last_mounted)); 1666 strncpy(fs->super->s_last_mounted, mount_dir, 1667 sizeof(fs->super->s_last_mounted)); 1668 } 1669 1670 if (!quiet || noaction) 1671 show_stats(fs); 1672 1673 if (noaction) 1674 exit(0); 1675 1676 if (fs->super->s_feature_incompat & 1677 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { 1678 create_journal_dev(fs); 1679 exit(ext2fs_close(fs) ? 1 : 0); 1680 } 1681 1682 if (bad_blocks_filename) 1683 read_bb_file(fs, &bb_list, bad_blocks_filename); 1684 1685 #ifndef NO_CHECK_BB 1686 if (cflag) 1687 test_disk(fs, &bb_list); 1688 #endif 1689 1690 handle_bad_blocks(fs, bb_list); 1691 fs->stride = fs_stride = fs->super->s_raid_stride; 1692 retval = ext2fs_allocate_tables(fs); 1693 if (retval) { 1694 com_err(program_name, retval, 1695 _("while trying to allocate filesystem tables")); 1696 exit(1); 1697 } 1698 if (super_only) { 1699 fs->super->s_state |= EXT2_ERROR_FS; 1700 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY); 1701 } else { 1702 /* rsv must be a power of two (64kB is MD RAID sb alignment) */ 1703 unsigned int rsv = 65536 / fs->blocksize; 1704 unsigned long blocks = fs->super->s_blocks_count; 1705 unsigned long start; 1706 blk_t ret_blk; 1707 1708 #ifdef ZAP_BOOTBLOCK 1709 zap_sector(fs, 0, 2); 1710 #endif 1711 1712 /* 1713 * Wipe out any old MD RAID (or other) metadata at the end 1714 * of the device. This will also verify that the device is 1715 * as large as we think. Be careful with very small devices. 1716 */ 1717 start = (blocks & ~(rsv - 1)); 1718 if (start > rsv) 1719 start -= rsv; 1720 if (start > 0) 1721 retval = zero_blocks(fs, start, blocks - start, 1722 NULL, &ret_blk, NULL); 1723 1724 if (retval) { 1725 com_err(program_name, retval, 1726 _("while zeroing block %u at end of filesystem"), 1727 ret_blk); 1728 } 1729 setup_lazy_bg(fs); 1730 write_inode_tables(fs); 1731 create_root_dir(fs); 1732 create_lost_and_found(fs); 1733 reserve_inodes(fs); 1734 create_bad_block_inode(fs, bb_list); 1735 if (fs->super->s_feature_compat & 1736 EXT2_FEATURE_COMPAT_RESIZE_INODE) { 1737 retval = ext2fs_create_resize_inode(fs); 1738 if (retval) { 1739 com_err("ext2fs_create_resize_inode", retval, 1740 _("while reserving blocks for online resize")); 1741 exit(1); 1742 } 1743 } 1744 } 1745 1746 if (journal_device) { 1747 ext2_filsys jfs; 1748 1749 if (!force) 1750 check_plausibility(journal_device); 1751 check_mount(journal_device, force, _("journal")); 1752 1753 retval = ext2fs_open(journal_device, EXT2_FLAG_RW| 1754 EXT2_FLAG_JOURNAL_DEV_OK, 0, 1755 fs->blocksize, unix_io_manager, &jfs); 1756 if (retval) { 1757 com_err(program_name, retval, 1758 _("while trying to open journal device %s\n"), 1759 journal_device); 1760 exit(1); 1761 } 1762 if (!quiet) { 1763 printf(_("Adding journal to device %s: "), 1764 journal_device); 1765 fflush(stdout); 1766 } 1767 retval = ext2fs_add_journal_device(fs, jfs); 1768 if(retval) { 1769 com_err (program_name, retval, 1770 _("\n\twhile trying to add journal to device %s"), 1771 journal_device); 1772 exit(1); 1773 } 1774 if (!quiet) 1775 printf(_("done\n")); 1776 ext2fs_close(jfs); 1777 free(journal_device); 1778 } else if ((journal_size) || 1779 (fs_param.s_feature_compat & 1780 EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 1781 journal_blocks = figure_journal_size(journal_size, fs); 1782 1783 if (!journal_blocks) { 1784 fs->super->s_feature_compat &= 1785 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 1786 goto no_journal; 1787 } 1788 if (!quiet) { 1789 printf(_("Creating journal (%d blocks): "), 1790 journal_blocks); 1791 fflush(stdout); 1792 } 1793 retval = ext2fs_add_journal_inode(fs, journal_blocks, 1794 journal_flags); 1795 if (retval) { 1796 com_err (program_name, retval, 1797 _("\n\twhile trying to create journal")); 1798 exit(1); 1799 } 1800 if (!quiet) 1801 printf(_("done\n")); 1802 } 1803 no_journal: 1804 1805 if (!quiet) 1806 printf(_("Writing superblocks and " 1807 "filesystem accounting information: ")); 1808 retval = ext2fs_flush(fs); 1809 if (retval) { 1810 fprintf(stderr, 1811 _("\nWarning, had trouble writing out superblocks.")); 1812 } 1813 if (!quiet) { 1814 printf(_("done\n\n")); 1815 if (!getenv("MKE2FS_SKIP_CHECK_MSG")) 1816 print_check_message(fs); 1817 } 1818 val = ext2fs_close(fs); 1819 remove_error_table(&et_ext2_error_table); 1820 remove_error_table(&et_prof_error_table); 1821 return (retval || val) ? 1 : 0; 1822 } 1823
