mke2fs.c revision ebabf2ad6d19af5c674b624bafe619dedbc94403
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#define _XOPEN_SOURCE 600 /* for inclusion of PATH_MAX in Solaris */ 20 21#include <stdio.h> 22#include <string.h> 23#include <fcntl.h> 24#include <ctype.h> 25#include <time.h> 26#ifdef __linux__ 27#include <sys/utsname.h> 28#endif 29#ifdef HAVE_GETOPT_H 30#include <getopt.h> 31#else 32extern char *optarg; 33extern int optind; 34#endif 35#ifdef HAVE_UNISTD_H 36#include <unistd.h> 37#endif 38#ifdef HAVE_STDLIB_H 39#include <stdlib.h> 40#endif 41#ifdef HAVE_ERRNO_H 42#include <errno.h> 43#endif 44#ifdef HAVE_MNTENT_H 45#include <mntent.h> 46#endif 47#include <sys/ioctl.h> 48#include <sys/types.h> 49#include <libgen.h> 50#include <limits.h> 51 52#include "ext2fs/ext2_fs.h" 53#include "et/com_err.h" 54#include "uuid/uuid.h" 55#include "e2p/e2p.h" 56#include "ext2fs/ext2fs.h" 57#include "util.h" 58#include "profile.h" 59#include "prof_err.h" 60#include "../version.h" 61#include "nls-enable.h" 62 63#define STRIDE_LENGTH 8 64 65#ifndef __sparc__ 66#define ZAP_BOOTBLOCK 67#endif 68 69extern int isatty(int); 70extern FILE *fpopen(const char *cmd, const char *mode); 71 72const char * program_name = "mke2fs"; 73const char * device_name /* = NULL */; 74 75/* Command line options */ 76int cflag; 77int verbose; 78int quiet; 79int super_only; 80int force; 81int noaction; 82int journal_size; 83int journal_flags; 84int lazy_itable_init; 85char *bad_blocks_filename; 86__u32 fs_stride; 87 88struct ext2_super_block fs_param; 89char *creator_os; 90char *volume_label; 91char *mount_dir; 92char *journal_device; 93int sync_kludge; /* Set using the MKE2FS_SYNC env. option */ 94char **fs_types; 95 96profile_t profile; 97 98int sys_page_size = 4096; 99int linux_version_code = 0; 100 101static void usage(void) 102{ 103 fprintf(stderr, _("Usage: %s [-c|-l filename] [-b block-size] " 104 "[-f fragment-size]\n\t[-i bytes-per-inode] [-I inode-size] " 105 "[-J journal-options]\n" 106 "\t[-G meta group size] [-N number-of-inodes]\n" 107 "\t[-m reserved-blocks-percentage] [-o creator-os]\n" 108 "\t[-g blocks-per-group] [-L volume-label] " 109 "[-M last-mounted-directory]\n\t[-O feature[,...]] " 110 "[-r fs-revision] [-E extended-option[,...]]\n" 111 "\t[-T fs-type] [-jnqvFSV] device [blocks-count]\n"), 112 program_name); 113 exit(1); 114} 115 116static int int_log2(int arg) 117{ 118 int l = 0; 119 120 arg >>= 1; 121 while (arg) { 122 l++; 123 arg >>= 1; 124 } 125 return l; 126} 127 128static int int_log10(unsigned int arg) 129{ 130 int l; 131 132 for (l=0; arg ; l++) 133 arg = arg / 10; 134 return l; 135} 136 137static int parse_version_number(const char *s) 138{ 139 int major, minor, rev; 140 char *endptr; 141 const char *cp = s; 142 143 if (!s) 144 return 0; 145 major = strtol(cp, &endptr, 10); 146 if (cp == endptr || *endptr != '.') 147 return 0; 148 cp = endptr + 1; 149 minor = strtol(cp, &endptr, 10); 150 if (cp == endptr || *endptr != '.') 151 return 0; 152 cp = endptr + 1; 153 rev = strtol(cp, &endptr, 10); 154 if (cp == endptr) 155 return 0; 156 return ((((major * 256) + minor) * 256) + rev); 157} 158 159/* 160 * Helper function for read_bb_file and test_disk 161 */ 162static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk) 163{ 164 fprintf(stderr, _("Bad block %u out of range; ignored.\n"), blk); 165 return; 166} 167 168/* 169 * Reads the bad blocks list from a file 170 */ 171static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list, 172 const char *bad_blocks_file) 173{ 174 FILE *f; 175 errcode_t retval; 176 177 f = fopen(bad_blocks_file, "r"); 178 if (!f) { 179 com_err("read_bad_blocks_file", errno, 180 _("while trying to open %s"), bad_blocks_file); 181 exit(1); 182 } 183 retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block); 184 fclose (f); 185 if (retval) { 186 com_err("ext2fs_read_bb_FILE", retval, 187 _("while reading in list of bad blocks from file")); 188 exit(1); 189 } 190} 191 192/* 193 * Runs the badblocks program to test the disk 194 */ 195static void test_disk(ext2_filsys fs, badblocks_list *bb_list) 196{ 197 FILE *f; 198 errcode_t retval; 199 char buf[1024]; 200 201 sprintf(buf, "badblocks -b %d -X %s%s%s %u", fs->blocksize, 202 quiet ? "" : "-s ", (cflag > 1) ? "-w " : "", 203 fs->device_name, fs->super->s_blocks_count-1); 204 if (verbose) 205 printf(_("Running command: %s\n"), buf); 206 f = popen(buf, "r"); 207 if (!f) { 208 com_err("popen", errno, 209 _("while trying to run '%s'"), buf); 210 exit(1); 211 } 212 retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block); 213 pclose(f); 214 if (retval) { 215 com_err("ext2fs_read_bb_FILE", retval, 216 _("while processing list of bad blocks from program")); 217 exit(1); 218 } 219} 220 221static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list) 222{ 223 dgrp_t i; 224 blk_t j; 225 unsigned must_be_good; 226 blk_t blk; 227 badblocks_iterate bb_iter; 228 errcode_t retval; 229 blk_t group_block; 230 int group; 231 int group_bad; 232 233 if (!bb_list) 234 return; 235 236 /* 237 * The primary superblock and group descriptors *must* be 238 * good; if not, abort. 239 */ 240 must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks; 241 for (i = fs->super->s_first_data_block; i <= must_be_good; i++) { 242 if (ext2fs_badblocks_list_test(bb_list, i)) { 243 fprintf(stderr, _("Block %d in primary " 244 "superblock/group descriptor area bad.\n"), i); 245 fprintf(stderr, _("Blocks %u through %u must be good " 246 "in order to build a filesystem.\n"), 247 fs->super->s_first_data_block, must_be_good); 248 fputs(_("Aborting....\n"), stderr); 249 exit(1); 250 } 251 } 252 253 /* 254 * See if any of the bad blocks are showing up in the backup 255 * superblocks and/or group descriptors. If so, issue a 256 * warning and adjust the block counts appropriately. 257 */ 258 group_block = fs->super->s_first_data_block + 259 fs->super->s_blocks_per_group; 260 261 for (i = 1; i < fs->group_desc_count; i++) { 262 group_bad = 0; 263 for (j=0; j < fs->desc_blocks+1; j++) { 264 if (ext2fs_badblocks_list_test(bb_list, 265 group_block + j)) { 266 if (!group_bad) 267 fprintf(stderr, 268_("Warning: the backup superblock/group descriptors at block %u contain\n" 269" bad blocks.\n\n"), 270 group_block); 271 group_bad++; 272 group = ext2fs_group_of_blk(fs, group_block+j); 273 fs->group_desc[group].bg_free_blocks_count++; 274 ext2fs_group_desc_csum_set(fs, group); 275 fs->super->s_free_blocks_count++; 276 } 277 } 278 group_block += fs->super->s_blocks_per_group; 279 } 280 281 /* 282 * Mark all the bad blocks as used... 283 */ 284 retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter); 285 if (retval) { 286 com_err("ext2fs_badblocks_list_iterate_begin", retval, 287 _("while marking bad blocks as used")); 288 exit(1); 289 } 290 while (ext2fs_badblocks_list_iterate(bb_iter, &blk)) 291 ext2fs_mark_block_bitmap(fs->block_map, blk); 292 ext2fs_badblocks_list_iterate_end(bb_iter); 293} 294 295/* 296 * These functions implement a generalized progress meter. 297 */ 298struct progress_struct { 299 char format[20]; 300 char backup[80]; 301 __u32 max; 302 int skip_progress; 303}; 304 305static void progress_init(struct progress_struct *progress, 306 const char *label,__u32 max) 307{ 308 int i; 309 310 memset(progress, 0, sizeof(struct progress_struct)); 311 if (quiet) 312 return; 313 314 /* 315 * Figure out how many digits we need 316 */ 317 i = int_log10(max); 318 sprintf(progress->format, "%%%dd/%%%dld", i, i); 319 memset(progress->backup, '\b', sizeof(progress->backup)-1); 320 progress->backup[sizeof(progress->backup)-1] = 0; 321 if ((2*i)+1 < (int) sizeof(progress->backup)) 322 progress->backup[(2*i)+1] = 0; 323 progress->max = max; 324 325 progress->skip_progress = 0; 326 if (getenv("MKE2FS_SKIP_PROGRESS")) 327 progress->skip_progress++; 328 329 fputs(label, stdout); 330 fflush(stdout); 331} 332 333static void progress_update(struct progress_struct *progress, __u32 val) 334{ 335 if ((progress->format[0] == 0) || progress->skip_progress) 336 return; 337 printf(progress->format, val, progress->max); 338 fputs(progress->backup, stdout); 339} 340 341static void progress_close(struct progress_struct *progress) 342{ 343 if (progress->format[0] == 0) 344 return; 345 fputs(_("done \n"), stdout); 346} 347 348static void write_inode_tables(ext2_filsys fs, int lazy_flag) 349{ 350 errcode_t retval; 351 blk_t blk; 352 dgrp_t i; 353 int num, ipb; 354 struct progress_struct progress; 355 356 if (quiet) 357 memset(&progress, 0, sizeof(progress)); 358 else 359 progress_init(&progress, _("Writing inode tables: "), 360 fs->group_desc_count); 361 362 for (i = 0; i < fs->group_desc_count; i++) { 363 progress_update(&progress, i); 364 365 blk = fs->group_desc[i].bg_inode_table; 366 num = fs->inode_blocks_per_group; 367 368 if (lazy_flag) { 369 ipb = fs->blocksize / EXT2_INODE_SIZE(fs->super); 370 num = ((((fs->super->s_inodes_per_group - 371 fs->group_desc[i].bg_itable_unused) * 372 EXT2_INODE_SIZE(fs->super)) + 373 EXT2_BLOCK_SIZE(fs->super) - 1) / 374 EXT2_BLOCK_SIZE(fs->super)); 375 } else { 376 /* The kernel doesn't need to zero the itable blocks */ 377 fs->group_desc[i].bg_flags |= EXT2_BG_INODE_ZEROED; 378 ext2fs_group_desc_csum_set(fs, i); 379 } 380 retval = ext2fs_zero_blocks(fs, blk, num, &blk, &num); 381 if (retval) { 382 fprintf(stderr, _("\nCould not write %d " 383 "blocks in inode table starting at %u: %s\n"), 384 num, blk, error_message(retval)); 385 exit(1); 386 } 387 if (sync_kludge) { 388 if (sync_kludge == 1) 389 sync(); 390 else if ((i % sync_kludge) == 0) 391 sync(); 392 } 393 } 394 ext2fs_zero_blocks(0, 0, 0, 0, 0); 395 progress_close(&progress); 396} 397 398static void create_root_dir(ext2_filsys fs) 399{ 400 errcode_t retval; 401 struct ext2_inode inode; 402 __u32 uid, gid; 403 404 retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0); 405 if (retval) { 406 com_err("ext2fs_mkdir", retval, _("while creating root dir")); 407 exit(1); 408 } 409 if (geteuid()) { 410 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode); 411 if (retval) { 412 com_err("ext2fs_read_inode", retval, 413 _("while reading root inode")); 414 exit(1); 415 } 416 uid = getuid(); 417 inode.i_uid = uid; 418 ext2fs_set_i_uid_high(inode, uid >> 16); 419 if (uid) { 420 gid = getgid(); 421 inode.i_gid = gid; 422 ext2fs_set_i_gid_high(inode, gid >> 16); 423 } 424 retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode); 425 if (retval) { 426 com_err("ext2fs_write_inode", retval, 427 _("while setting root inode ownership")); 428 exit(1); 429 } 430 } 431} 432 433static void create_lost_and_found(ext2_filsys fs) 434{ 435 unsigned int lpf_size = 0; 436 errcode_t retval; 437 ext2_ino_t ino; 438 const char *name = "lost+found"; 439 int i; 440 441 fs->umask = 077; 442 retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name); 443 if (retval) { 444 com_err("ext2fs_mkdir", retval, 445 _("while creating /lost+found")); 446 exit(1); 447 } 448 449 retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino); 450 if (retval) { 451 com_err("ext2_lookup", retval, 452 _("while looking up /lost+found")); 453 exit(1); 454 } 455 456 for (i=1; i < EXT2_NDIR_BLOCKS; i++) { 457 /* Ensure that lost+found is at least 2 blocks, so we always 458 * test large empty blocks for big-block filesystems. */ 459 if ((lpf_size += fs->blocksize) >= 16*1024 && 460 lpf_size >= 2 * fs->blocksize) 461 break; 462 retval = ext2fs_expand_dir(fs, ino); 463 if (retval) { 464 com_err("ext2fs_expand_dir", retval, 465 _("while expanding /lost+found")); 466 exit(1); 467 } 468 } 469} 470 471static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list) 472{ 473 errcode_t retval; 474 475 ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO); 476 ext2fs_inode_alloc_stats2(fs, EXT2_BAD_INO, +1, 0); 477 retval = ext2fs_update_bb_inode(fs, bb_list); 478 if (retval) { 479 com_err("ext2fs_update_bb_inode", retval, 480 _("while setting bad block inode")); 481 exit(1); 482 } 483 484} 485 486static void reserve_inodes(ext2_filsys fs) 487{ 488 ext2_ino_t i; 489 490 for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) 491 ext2fs_inode_alloc_stats2(fs, i, +1, 0); 492 ext2fs_mark_ib_dirty(fs); 493} 494 495#define BSD_DISKMAGIC (0x82564557UL) /* The disk magic number */ 496#define BSD_MAGICDISK (0x57455682UL) /* The disk magic number reversed */ 497#define BSD_LABEL_OFFSET 64 498 499static void zap_sector(ext2_filsys fs, int sect, int nsect) 500{ 501 char *buf; 502 int retval; 503 unsigned int *magic; 504 505 buf = malloc(512*nsect); 506 if (!buf) { 507 printf(_("Out of memory erasing sectors %d-%d\n"), 508 sect, sect + nsect - 1); 509 exit(1); 510 } 511 512 if (sect == 0) { 513 /* Check for a BSD disklabel, and don't erase it if so */ 514 retval = io_channel_read_blk(fs->io, 0, -512, buf); 515 if (retval) 516 fprintf(stderr, 517 _("Warning: could not read block 0: %s\n"), 518 error_message(retval)); 519 else { 520 magic = (unsigned int *) (buf + BSD_LABEL_OFFSET); 521 if ((*magic == BSD_DISKMAGIC) || 522 (*magic == BSD_MAGICDISK)) 523 return; 524 } 525 } 526 527 memset(buf, 0, 512*nsect); 528 io_channel_set_blksize(fs->io, 512); 529 retval = io_channel_write_blk(fs->io, sect, -512*nsect, buf); 530 io_channel_set_blksize(fs->io, fs->blocksize); 531 free(buf); 532 if (retval) 533 fprintf(stderr, _("Warning: could not erase sector %d: %s\n"), 534 sect, error_message(retval)); 535} 536 537static void create_journal_dev(ext2_filsys fs) 538{ 539 struct progress_struct progress; 540 errcode_t retval; 541 char *buf; 542 blk_t blk, err_blk; 543 int c, count, err_count; 544 545 retval = ext2fs_create_journal_superblock(fs, 546 fs->super->s_blocks_count, 0, &buf); 547 if (retval) { 548 com_err("create_journal_dev", retval, 549 _("while initializing journal superblock")); 550 exit(1); 551 } 552 if (quiet) 553 memset(&progress, 0, sizeof(progress)); 554 else 555 progress_init(&progress, _("Zeroing journal device: "), 556 fs->super->s_blocks_count); 557 558 blk = 0; 559 count = fs->super->s_blocks_count; 560 while (count > 0) { 561 if (count > 1024) 562 c = 1024; 563 else 564 c = count; 565 retval = ext2fs_zero_blocks(fs, blk, c, &err_blk, &err_count); 566 if (retval) { 567 com_err("create_journal_dev", retval, 568 _("while zeroing journal device " 569 "(block %u, count %d)"), 570 err_blk, err_count); 571 exit(1); 572 } 573 blk += c; 574 count -= c; 575 progress_update(&progress, blk); 576 } 577 ext2fs_zero_blocks(0, 0, 0, 0, 0); 578 579 retval = io_channel_write_blk(fs->io, 580 fs->super->s_first_data_block+1, 581 1, buf); 582 if (retval) { 583 com_err("create_journal_dev", retval, 584 _("while writing journal superblock")); 585 exit(1); 586 } 587 progress_close(&progress); 588} 589 590static void show_stats(ext2_filsys fs) 591{ 592 struct ext2_super_block *s = fs->super; 593 char buf[80]; 594 char *os; 595 blk_t group_block; 596 dgrp_t i; 597 int need, col_left; 598 599 if (fs_param.s_blocks_count != s->s_blocks_count) 600 fprintf(stderr, _("warning: %u blocks unused.\n\n"), 601 fs_param.s_blocks_count - s->s_blocks_count); 602 603 memset(buf, 0, sizeof(buf)); 604 strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name)); 605 printf(_("Filesystem label=%s\n"), buf); 606 fputs(_("OS type: "), stdout); 607 os = e2p_os2string(fs->super->s_creator_os); 608 fputs(os, stdout); 609 free(os); 610 printf("\n"); 611 printf(_("Block size=%u (log=%u)\n"), fs->blocksize, 612 s->s_log_block_size); 613 printf(_("Fragment size=%u (log=%u)\n"), fs->fragsize, 614 s->s_log_frag_size); 615 printf(_("%u inodes, %u blocks\n"), s->s_inodes_count, 616 s->s_blocks_count); 617 printf(_("%u blocks (%2.2f%%) reserved for the super user\n"), 618 s->s_r_blocks_count, 619 100.0 * s->s_r_blocks_count / s->s_blocks_count); 620 printf(_("First data block=%u\n"), s->s_first_data_block); 621 if (s->s_reserved_gdt_blocks) 622 printf(_("Maximum filesystem blocks=%lu\n"), 623 (s->s_reserved_gdt_blocks + fs->desc_blocks) * 624 EXT2_DESC_PER_BLOCK(s) * s->s_blocks_per_group); 625 if (fs->group_desc_count > 1) 626 printf(_("%u block groups\n"), fs->group_desc_count); 627 else 628 printf(_("%u block group\n"), fs->group_desc_count); 629 printf(_("%u blocks per group, %u fragments per group\n"), 630 s->s_blocks_per_group, s->s_frags_per_group); 631 printf(_("%u inodes per group\n"), s->s_inodes_per_group); 632 633 if (fs->group_desc_count == 1) { 634 printf("\n"); 635 return; 636 } 637 638 printf(_("Superblock backups stored on blocks: ")); 639 group_block = s->s_first_data_block; 640 col_left = 0; 641 for (i = 1; i < fs->group_desc_count; i++) { 642 group_block += s->s_blocks_per_group; 643 if (!ext2fs_bg_has_super(fs, i)) 644 continue; 645 if (i != 1) 646 printf(", "); 647 need = int_log10(group_block) + 2; 648 if (need > col_left) { 649 printf("\n\t"); 650 col_left = 72; 651 } 652 col_left -= need; 653 printf("%u", group_block); 654 } 655 printf("\n\n"); 656} 657 658/* 659 * Set the S_CREATOR_OS field. Return true if OS is known, 660 * otherwise, 0. 661 */ 662static int set_os(struct ext2_super_block *sb, char *os) 663{ 664 if (isdigit (*os)) 665 sb->s_creator_os = atoi (os); 666 else if (strcasecmp(os, "linux") == 0) 667 sb->s_creator_os = EXT2_OS_LINUX; 668 else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0) 669 sb->s_creator_os = EXT2_OS_HURD; 670 else if (strcasecmp(os, "freebsd") == 0) 671 sb->s_creator_os = EXT2_OS_FREEBSD; 672 else if (strcasecmp(os, "lites") == 0) 673 sb->s_creator_os = EXT2_OS_LITES; 674 else 675 return 0; 676 return 1; 677} 678 679#define PATH_SET "PATH=/sbin" 680 681static void parse_extended_opts(struct ext2_super_block *param, 682 const char *opts) 683{ 684 char *buf, *token, *next, *p, *arg, *badopt = 0; 685 int len; 686 int r_usage = 0; 687 688 len = strlen(opts); 689 buf = malloc(len+1); 690 if (!buf) { 691 fprintf(stderr, 692 _("Couldn't allocate memory to parse options!\n")); 693 exit(1); 694 } 695 strcpy(buf, opts); 696 for (token = buf; token && *token; token = next) { 697 p = strchr(token, ','); 698 next = 0; 699 if (p) { 700 *p = 0; 701 next = p+1; 702 } 703 arg = strchr(token, '='); 704 if (arg) { 705 *arg = 0; 706 arg++; 707 } 708 if (strcmp(token, "stride") == 0) { 709 if (!arg) { 710 r_usage++; 711 badopt = token; 712 continue; 713 } 714 param->s_raid_stride = strtoul(arg, &p, 0); 715 if (*p || (param->s_raid_stride == 0)) { 716 fprintf(stderr, 717 _("Invalid stride parameter: %s\n"), 718 arg); 719 r_usage++; 720 continue; 721 } 722 } else if (strcmp(token, "stripe-width") == 0 || 723 strcmp(token, "stripe_width") == 0) { 724 if (!arg) { 725 r_usage++; 726 badopt = token; 727 continue; 728 } 729 param->s_raid_stripe_width = strtoul(arg, &p, 0); 730 if (*p || (param->s_raid_stripe_width == 0)) { 731 fprintf(stderr, 732 _("Invalid stripe-width parameter: %s\n"), 733 arg); 734 r_usage++; 735 continue; 736 } 737 } else if (!strcmp(token, "resize")) { 738 unsigned long resize, bpg, rsv_groups; 739 unsigned long group_desc_count, desc_blocks; 740 unsigned int gdpb, blocksize; 741 int rsv_gdb; 742 743 if (!arg) { 744 r_usage++; 745 badopt = token; 746 continue; 747 } 748 749 resize = parse_num_blocks(arg, 750 param->s_log_block_size); 751 752 if (resize == 0) { 753 fprintf(stderr, 754 _("Invalid resize parameter: %s\n"), 755 arg); 756 r_usage++; 757 continue; 758 } 759 if (resize <= param->s_blocks_count) { 760 fprintf(stderr, 761 _("The resize maximum must be greater " 762 "than the filesystem size.\n")); 763 r_usage++; 764 continue; 765 } 766 767 blocksize = EXT2_BLOCK_SIZE(param); 768 bpg = param->s_blocks_per_group; 769 if (!bpg) 770 bpg = blocksize * 8; 771 gdpb = EXT2_DESC_PER_BLOCK(param); 772 group_desc_count = 773 ext2fs_div_ceil(param->s_blocks_count, bpg); 774 desc_blocks = (group_desc_count + 775 gdpb - 1) / gdpb; 776 rsv_groups = ext2fs_div_ceil(resize, bpg); 777 rsv_gdb = ext2fs_div_ceil(rsv_groups, gdpb) - 778 desc_blocks; 779 if (rsv_gdb > (int) EXT2_ADDR_PER_BLOCK(param)) 780 rsv_gdb = EXT2_ADDR_PER_BLOCK(param); 781 782 if (rsv_gdb > 0) { 783 if (param->s_rev_level == EXT2_GOOD_OLD_REV) { 784 fprintf(stderr, 785 _("On-line resizing not supported with revision 0 filesystems\n")); 786 free(buf); 787 exit(1); 788 } 789 param->s_feature_compat |= 790 EXT2_FEATURE_COMPAT_RESIZE_INODE; 791 792 param->s_reserved_gdt_blocks = rsv_gdb; 793 } 794 } else if (!strcmp(token, "test_fs")) { 795 param->s_flags |= EXT2_FLAGS_TEST_FILESYS; 796 } else if (!strcmp(token, "lazy_itable_init")) { 797 if (arg) 798 lazy_itable_init = strtoul(arg, &p, 0); 799 else 800 lazy_itable_init = 1; 801 } else { 802 r_usage++; 803 badopt = token; 804 } 805 } 806 if (r_usage) { 807 fprintf(stderr, _("\nBad option(s) specified: %s\n\n" 808 "Extended options are separated by commas, " 809 "and may take an argument which\n" 810 "\tis set off by an equals ('=') sign.\n\n" 811 "Valid extended options are:\n" 812 "\tstride=<RAID per-disk data chunk in blocks>\n" 813 "\tstripe-width=<RAID stride * data disks in blocks>\n" 814 "\tresize=<resize maximum size in blocks>\n" 815 "\tlazy_itable_init=<0 to disable, 1 to enable>\n" 816 "\ttest_fs\n\n"), 817 badopt ? badopt : ""); 818 free(buf); 819 exit(1); 820 } 821 if (param->s_raid_stride && 822 (param->s_raid_stripe_width % param->s_raid_stride) != 0) 823 fprintf(stderr, _("\nWarning: RAID stripe-width %u not an even " 824 "multiple of stride %u.\n\n"), 825 param->s_raid_stripe_width, param->s_raid_stride); 826 827 free(buf); 828} 829 830static __u32 ok_features[3] = { 831 /* Compat */ 832 EXT3_FEATURE_COMPAT_HAS_JOURNAL | 833 EXT2_FEATURE_COMPAT_RESIZE_INODE | 834 EXT2_FEATURE_COMPAT_DIR_INDEX | 835 EXT2_FEATURE_COMPAT_EXT_ATTR, 836 /* Incompat */ 837 EXT2_FEATURE_INCOMPAT_FILETYPE| 838 EXT3_FEATURE_INCOMPAT_EXTENTS| 839 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV| 840 EXT2_FEATURE_INCOMPAT_META_BG| 841 EXT4_FEATURE_INCOMPAT_FLEX_BG, 842 /* R/O compat */ 843 EXT2_FEATURE_RO_COMPAT_LARGE_FILE| 844 EXT4_FEATURE_RO_COMPAT_HUGE_FILE| 845 EXT4_FEATURE_RO_COMPAT_DIR_NLINK| 846 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE| 847 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| 848 EXT4_FEATURE_RO_COMPAT_GDT_CSUM 849}; 850 851 852static void syntax_err_report(const char *filename, long err, int line_num) 853{ 854 fprintf(stderr, 855 _("Syntax error in mke2fs config file (%s, line #%d)\n\t%s\n"), 856 filename, line_num, error_message(err)); 857 exit(1); 858} 859 860static const char *config_fn[] = { ROOT_SYSCONFDIR "/mke2fs.conf", 0 }; 861 862static void edit_feature(const char *str, __u32 *compat_array) 863{ 864 if (!str) 865 return; 866 867 if (e2p_edit_feature(str, compat_array, ok_features)) { 868 fprintf(stderr, _("Invalid filesystem option set: %s\n"), 869 str); 870 exit(1); 871 } 872} 873 874struct str_list { 875 char **list; 876 int num; 877 int max; 878}; 879 880static errcode_t init_list(struct str_list *sl) 881{ 882 sl->num = 0; 883 sl->max = 0; 884 sl->list = malloc((sl->max+1) * sizeof(char *)); 885 if (!sl->list) 886 return ENOMEM; 887 sl->list[0] = 0; 888 return 0; 889} 890 891static errcode_t push_string(struct str_list *sl, const char *str) 892{ 893 char **new_list; 894 895 if (sl->num >= sl->max) { 896 sl->max += 2; 897 new_list = realloc(sl->list, (sl->max+1) * sizeof(char *)); 898 if (!new_list) 899 return ENOMEM; 900 sl->list = new_list; 901 } 902 sl->list[sl->num] = malloc(strlen(str)+1); 903 if (sl->list[sl->num] == 0) 904 return ENOMEM; 905 strcpy(sl->list[sl->num], str); 906 sl->num++; 907 sl->list[sl->num] = 0; 908 return 0; 909} 910 911static void print_str_list(char **list) 912{ 913 char **cpp; 914 915 for (cpp = list; *cpp; cpp++) { 916 printf("'%s'", *cpp); 917 if (cpp[1]) 918 fputs(", ", stdout); 919 } 920 fputc('\n', stdout); 921} 922 923static char **parse_fs_type(const char *fs_type, 924 const char *usage_types, 925 struct ext2_super_block *fs_param, 926 char *progname) 927{ 928 const char *ext_type = 0; 929 char *parse_str; 930 char *profile_type = 0; 931 char *cp, *t; 932 const char *size_type; 933 struct str_list list; 934 unsigned long meg; 935 int is_hurd = 0; 936 937 if (init_list(&list)) 938 return 0; 939 940 if (creator_os && (!strcasecmp(creator_os, "GNU") || 941 !strcasecmp(creator_os, "hurd"))) 942 is_hurd = 1; 943 944 if (fs_type) 945 ext_type = fs_type; 946 else if (is_hurd) 947 ext_type = "ext2"; 948 else if (progname) { 949 ext_type = strrchr(progname, '/'); 950 if (ext_type) 951 ext_type++; 952 else 953 ext_type = progname; 954 955 if (!strncmp(ext_type, "mkfs.", 5)) { 956 ext_type += 5; 957 if (ext_type[0] == 0) 958 ext_type = 0; 959 } else 960 ext_type = 0; 961 } 962 963 if (!ext_type) { 964 profile_get_string(profile, "defaults", "fs_type", 0, 965 "ext2", &profile_type); 966 ext_type = profile_type; 967 if (!strcmp(ext_type, "ext2") && (journal_size != 0)) 968 ext_type = "ext3"; 969 } 970 971 meg = (1024 * 1024) / EXT2_BLOCK_SIZE(fs_param); 972 if (fs_param->s_blocks_count < 3 * meg) 973 size_type = "floppy"; 974 else if (fs_param->s_blocks_count < 512 * meg) 975 size_type = "small"; 976 else 977 size_type = "default"; 978 979 if (!usage_types) 980 usage_types = size_type; 981 982 parse_str = malloc(usage_types ? strlen(usage_types)+1 : 1); 983 if (!parse_str) { 984 free(list.list); 985 return 0; 986 } 987 if (usage_types) 988 strcpy(parse_str, usage_types); 989 else 990 *parse_str = '\0'; 991 992 if (ext_type) 993 push_string(&list, ext_type); 994 cp = parse_str; 995 while (1) { 996 t = strchr(cp, ','); 997 if (t) 998 *t = '\0'; 999 1000 if (*cp) 1001 push_string(&list, cp); 1002 if (t) 1003 cp = t+1; 1004 else { 1005 cp = ""; 1006 break; 1007 } 1008 } 1009 free(parse_str); 1010 if (profile_type) 1011 free(profile_type); 1012 if (is_hurd) 1013 push_string(&list, "hurd"); 1014 return (list.list); 1015} 1016 1017static char *get_string_from_profile(char **fs_types, const char *opt, 1018 const char *def_val) 1019{ 1020 char *ret = 0; 1021 int i; 1022 1023 for (i=0; fs_types[i]; i++); 1024 for (i-=1; i >=0 ; i--) { 1025 profile_get_string(profile, "fs_types", fs_types[i], 1026 opt, 0, &ret); 1027 if (ret) 1028 return ret; 1029 } 1030 profile_get_string(profile, "defaults", opt, 0, def_val, &ret); 1031 return (ret); 1032} 1033 1034static int get_int_from_profile(char **fs_types, const char *opt, int def_val) 1035{ 1036 int ret; 1037 char **cpp; 1038 1039 profile_get_integer(profile, "defaults", opt, 0, def_val, &ret); 1040 for (cpp = fs_types; *cpp; cpp++) 1041 profile_get_integer(profile, "fs_types", *cpp, opt, ret, &ret); 1042 return ret; 1043} 1044 1045static int get_bool_from_profile(char **fs_types, const char *opt, int def_val) 1046{ 1047 int ret; 1048 char **cpp; 1049 1050 profile_get_boolean(profile, "defaults", opt, 0, def_val, &ret); 1051 for (cpp = fs_types; *cpp; cpp++) 1052 profile_get_boolean(profile, "fs_types", *cpp, opt, ret, &ret); 1053 return ret; 1054} 1055 1056extern const char *mke2fs_default_profile; 1057static const char *default_files[] = { "<default>", 0 }; 1058 1059static void PRS(int argc, char *argv[]) 1060{ 1061 int b, c; 1062 int size; 1063 char *tmp, **cpp; 1064 int blocksize = 0; 1065 int inode_ratio = 0; 1066 int inode_size = 0; 1067 unsigned long flex_bg_size = 0; 1068 double reserved_ratio = 5.0; 1069 int sector_size = 0; 1070 int show_version_only = 0; 1071 unsigned long long num_inodes = 0; /* unsigned long long to catch too-large input */ 1072 errcode_t retval; 1073 char * oldpath = getenv("PATH"); 1074 char * extended_opts = 0; 1075 const char * fs_type = 0; 1076 const char * usage_types = 0; 1077 blk_t dev_size; 1078#ifdef __linux__ 1079 struct utsname ut; 1080#endif 1081 long sysval; 1082 int s_opt = -1, r_opt = -1; 1083 char *fs_features = 0; 1084 int use_bsize; 1085 char *newpath; 1086 int pathlen = sizeof(PATH_SET) + 1; 1087 1088 if (oldpath) 1089 pathlen += strlen(oldpath); 1090 newpath = malloc(pathlen); 1091 strcpy(newpath, PATH_SET); 1092 1093 /* Update our PATH to include /sbin */ 1094 if (oldpath) { 1095 strcat (newpath, ":"); 1096 strcat (newpath, oldpath); 1097 } 1098 putenv (newpath); 1099 1100 tmp = getenv("MKE2FS_SYNC"); 1101 if (tmp) 1102 sync_kludge = atoi(tmp); 1103 1104 /* Determine the system page size if possible */ 1105#ifdef HAVE_SYSCONF 1106#if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE)) 1107#define _SC_PAGESIZE _SC_PAGE_SIZE 1108#endif 1109#ifdef _SC_PAGESIZE 1110 sysval = sysconf(_SC_PAGESIZE); 1111 if (sysval > 0) 1112 sys_page_size = sysval; 1113#endif /* _SC_PAGESIZE */ 1114#endif /* HAVE_SYSCONF */ 1115 1116 if ((tmp = getenv("MKE2FS_CONFIG")) != NULL) 1117 config_fn[0] = tmp; 1118 profile_set_syntax_err_cb(syntax_err_report); 1119 retval = profile_init(config_fn, &profile); 1120 if (retval == ENOENT) { 1121 profile_init(default_files, &profile); 1122 profile_set_default(profile, mke2fs_default_profile); 1123 } 1124 1125 setbuf(stdout, NULL); 1126 setbuf(stderr, NULL); 1127 add_error_table(&et_ext2_error_table); 1128 add_error_table(&et_prof_error_table); 1129 memset(&fs_param, 0, sizeof(struct ext2_super_block)); 1130 fs_param.s_rev_level = 1; /* Create revision 1 filesystems now */ 1131 1132#ifdef __linux__ 1133 if (uname(&ut)) { 1134 perror("uname"); 1135 exit(1); 1136 } 1137 linux_version_code = parse_version_number(ut.release); 1138 if (linux_version_code && linux_version_code < (2*65536 + 2*256)) 1139 fs_param.s_rev_level = 0; 1140#endif 1141 1142 if (argc && *argv) { 1143 program_name = get_progname(*argv); 1144 1145 /* If called as mkfs.ext3, create a journal inode */ 1146 if (!strcmp(program_name, "mkfs.ext3")) 1147 journal_size = -1; 1148 } 1149 1150 while ((c = getopt (argc, argv, 1151 "b:cf:g:G:i:jl:m:no:qr:s:t:vE:FI:J:L:M:N:O:R:ST:V")) != EOF) { 1152 switch (c) { 1153 case 'b': 1154 blocksize = strtol(optarg, &tmp, 0); 1155 b = (blocksize > 0) ? blocksize : -blocksize; 1156 if (b < EXT2_MIN_BLOCK_SIZE || 1157 b > EXT2_MAX_BLOCK_SIZE || *tmp) { 1158 com_err(program_name, 0, 1159 _("invalid block size - %s"), optarg); 1160 exit(1); 1161 } 1162 if (blocksize > 4096) 1163 fprintf(stderr, _("Warning: blocksize %d not " 1164 "usable on most systems.\n"), 1165 blocksize); 1166 if (blocksize > 0) 1167 fs_param.s_log_block_size = 1168 int_log2(blocksize >> 1169 EXT2_MIN_BLOCK_LOG_SIZE); 1170 break; 1171 case 'c': /* Check for bad blocks */ 1172 cflag++; 1173 break; 1174 case 'f': 1175 size = strtoul(optarg, &tmp, 0); 1176 if (size < EXT2_MIN_BLOCK_SIZE || 1177 size > EXT2_MAX_BLOCK_SIZE || *tmp) { 1178 com_err(program_name, 0, 1179 _("invalid fragment size - %s"), 1180 optarg); 1181 exit(1); 1182 } 1183 fs_param.s_log_frag_size = 1184 int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE); 1185 fprintf(stderr, _("Warning: fragments not supported. " 1186 "Ignoring -f option\n")); 1187 break; 1188 case 'g': 1189 fs_param.s_blocks_per_group = strtoul(optarg, &tmp, 0); 1190 if (*tmp) { 1191 com_err(program_name, 0, 1192 _("Illegal number for blocks per group")); 1193 exit(1); 1194 } 1195 if ((fs_param.s_blocks_per_group % 8) != 0) { 1196 com_err(program_name, 0, 1197 _("blocks per group must be multiple of 8")); 1198 exit(1); 1199 } 1200 break; 1201 case 'G': 1202 flex_bg_size = strtoul(optarg, &tmp, 0); 1203 if (*tmp) { 1204 com_err(program_name, 0, 1205 _("Illegal number for flex_bg size")); 1206 exit(1); 1207 } 1208 if (flex_bg_size < 2 || 1209 (flex_bg_size & (flex_bg_size-1)) != 0) { 1210 com_err(program_name, 0, 1211 _("flex_bg size must be a power of 2")); 1212 exit(1); 1213 } 1214 break; 1215 case 'i': 1216 inode_ratio = strtoul(optarg, &tmp, 0); 1217 if (inode_ratio < EXT2_MIN_BLOCK_SIZE || 1218 inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024 || 1219 *tmp) { 1220 com_err(program_name, 0, 1221 _("invalid inode ratio %s (min %d/max %d)"), 1222 optarg, EXT2_MIN_BLOCK_SIZE, 1223 EXT2_MAX_BLOCK_SIZE); 1224 exit(1); 1225 } 1226 break; 1227 case 'J': 1228 parse_journal_opts(optarg); 1229 break; 1230 case 'j': 1231 if (!journal_size) 1232 journal_size = -1; 1233 break; 1234 case 'l': 1235 bad_blocks_filename = malloc(strlen(optarg)+1); 1236 if (!bad_blocks_filename) { 1237 com_err(program_name, ENOMEM, 1238 _("in malloc for bad_blocks_filename")); 1239 exit(1); 1240 } 1241 strcpy(bad_blocks_filename, optarg); 1242 break; 1243 case 'm': 1244 reserved_ratio = strtod(optarg, &tmp); 1245 if (reserved_ratio > 50 || *tmp) { 1246 com_err(program_name, 0, 1247 _("invalid reserved blocks percent - %s"), 1248 optarg); 1249 exit(1); 1250 } 1251 break; 1252 case 'n': 1253 noaction++; 1254 break; 1255 case 'o': 1256 creator_os = optarg; 1257 break; 1258 case 'q': 1259 quiet = 1; 1260 break; 1261 case 'r': 1262 r_opt = strtoul(optarg, &tmp, 0); 1263 if (*tmp) { 1264 com_err(program_name, 0, 1265 _("bad revision level - %s"), optarg); 1266 exit(1); 1267 } 1268 fs_param.s_rev_level = r_opt; 1269 break; 1270 case 's': /* deprecated */ 1271 s_opt = atoi(optarg); 1272 break; 1273 case 'I': 1274 inode_size = strtoul(optarg, &tmp, 0); 1275 if (*tmp) { 1276 com_err(program_name, 0, 1277 _("invalid inode size - %s"), optarg); 1278 exit(1); 1279 } 1280 break; 1281 case 'v': 1282 verbose = 1; 1283 break; 1284 case 'F': 1285 force++; 1286 break; 1287 case 'L': 1288 volume_label = optarg; 1289 break; 1290 case 'M': 1291 mount_dir = optarg; 1292 break; 1293 case 'N': 1294 num_inodes = strtoul(optarg, &tmp, 0); 1295 if (*tmp) { 1296 com_err(program_name, 0, 1297 _("bad num inodes - %s"), optarg); 1298 exit(1); 1299 } 1300 break; 1301 case 'O': 1302 fs_features = optarg; 1303 break; 1304 case 'E': 1305 case 'R': 1306 extended_opts = optarg; 1307 break; 1308 case 'S': 1309 super_only = 1; 1310 break; 1311 case 't': 1312 fs_type = optarg; 1313 break; 1314 case 'T': 1315 usage_types = optarg; 1316 break; 1317 case 'V': 1318 /* Print version number and exit */ 1319 show_version_only++; 1320 break; 1321 default: 1322 usage(); 1323 } 1324 } 1325 if ((optind == argc) && !show_version_only) 1326 usage(); 1327 device_name = argv[optind++]; 1328 1329 if (!quiet || show_version_only) 1330 fprintf (stderr, "mke2fs %s (%s)\n", E2FSPROGS_VERSION, 1331 E2FSPROGS_DATE); 1332 1333 if (show_version_only) { 1334 fprintf(stderr, _("\tUsing %s\n"), 1335 error_message(EXT2_ET_BASE)); 1336 exit(0); 1337 } 1338 1339 /* 1340 * If there's no blocksize specified and there is a journal 1341 * device, use it to figure out the blocksize 1342 */ 1343 if (blocksize <= 0 && journal_device) { 1344 ext2_filsys jfs; 1345 io_manager io_ptr; 1346 1347#ifdef CONFIG_TESTIO_DEBUG 1348 io_ptr = test_io_manager; 1349 test_io_backing_manager = unix_io_manager; 1350#else 1351 io_ptr = unix_io_manager; 1352#endif 1353 retval = ext2fs_open(journal_device, 1354 EXT2_FLAG_JOURNAL_DEV_OK, 0, 1355 0, io_ptr, &jfs); 1356 if (retval) { 1357 com_err(program_name, retval, 1358 _("while trying to open journal device %s\n"), 1359 journal_device); 1360 exit(1); 1361 } 1362 if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) { 1363 com_err(program_name, 0, 1364 _("Journal dev blocksize (%d) smaller than " 1365 "minimum blocksize %d\n"), jfs->blocksize, 1366 -blocksize); 1367 exit(1); 1368 } 1369 blocksize = jfs->blocksize; 1370 printf(_("Using journal device's blocksize: %d\n"), blocksize); 1371 fs_param.s_log_block_size = 1372 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE); 1373 ext2fs_close(jfs); 1374 } 1375 1376 if (blocksize > sys_page_size) { 1377 if (!force) { 1378 com_err(program_name, 0, 1379 _("%d-byte blocks too big for system (max %d)"), 1380 blocksize, sys_page_size); 1381 proceed_question(); 1382 } 1383 fprintf(stderr, _("Warning: %d-byte blocks too big for system " 1384 "(max %d), forced to continue\n"), 1385 blocksize, sys_page_size); 1386 } 1387 if (optind < argc) { 1388 fs_param.s_blocks_count = parse_num_blocks(argv[optind++], 1389 fs_param.s_log_block_size); 1390 if (!fs_param.s_blocks_count) { 1391 com_err(program_name, 0, _("invalid blocks count - %s"), 1392 argv[optind - 1]); 1393 exit(1); 1394 } 1395 } 1396 if (optind < argc) 1397 usage(); 1398 1399 if (!force) 1400 check_plausibility(device_name); 1401 check_mount(device_name, force, _("filesystem")); 1402 1403 fs_param.s_log_frag_size = fs_param.s_log_block_size; 1404 1405 if (noaction && fs_param.s_blocks_count) { 1406 dev_size = fs_param.s_blocks_count; 1407 retval = 0; 1408 } else { 1409 retry: 1410 retval = ext2fs_get_device_size(device_name, 1411 EXT2_BLOCK_SIZE(&fs_param), 1412 &dev_size); 1413 if ((retval == EFBIG) && 1414 (blocksize == 0) && 1415 (fs_param.s_log_block_size == 0)) { 1416 fs_param.s_log_block_size = 2; 1417 blocksize = 4096; 1418 goto retry; 1419 } 1420 } 1421 1422 if (retval == EFBIG) { 1423 fprintf(stderr, _("%s: Size of device %s too big " 1424 "to be expressed in 32 bits\n\t" 1425 "using a blocksize of %d.\n"), 1426 program_name, device_name, EXT2_BLOCK_SIZE(&fs_param)); 1427 exit(1); 1428 } 1429 if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) { 1430 com_err(program_name, retval, 1431 _("while trying to determine filesystem size")); 1432 exit(1); 1433 } 1434 if (!fs_param.s_blocks_count) { 1435 if (retval == EXT2_ET_UNIMPLEMENTED) { 1436 com_err(program_name, 0, 1437 _("Couldn't determine device size; you " 1438 "must specify\nthe size of the " 1439 "filesystem\n")); 1440 exit(1); 1441 } else { 1442 if (dev_size == 0) { 1443 com_err(program_name, 0, 1444 _("Device size reported to be zero. " 1445 "Invalid partition specified, or\n\t" 1446 "partition table wasn't reread " 1447 "after running fdisk, due to\n\t" 1448 "a modified partition being busy " 1449 "and in use. You may need to reboot\n\t" 1450 "to re-read your partition table.\n" 1451 )); 1452 exit(1); 1453 } 1454 fs_param.s_blocks_count = dev_size; 1455 if (sys_page_size > EXT2_BLOCK_SIZE(&fs_param)) 1456 fs_param.s_blocks_count &= ~((sys_page_size / 1457 EXT2_BLOCK_SIZE(&fs_param))-1); 1458 } 1459 1460 } else if (!force && (fs_param.s_blocks_count > dev_size)) { 1461 com_err(program_name, 0, 1462 _("Filesystem larger than apparent device size.")); 1463 proceed_question(); 1464 } 1465 1466 fs_types = parse_fs_type(fs_type, usage_types, &fs_param, argv[0]); 1467 if (!fs_types) { 1468 fprintf(stderr, _("Failed to parse fs types list\n")); 1469 exit(1); 1470 } 1471 1472 /* Figure out what features should be enabled */ 1473 1474 tmp = NULL; 1475 if (fs_param.s_rev_level != EXT2_GOOD_OLD_REV) { 1476 tmp = get_string_from_profile(fs_types, "base_features", 1477 "sparse_super,filetype,resize_inode,dir_index"); 1478 edit_feature(tmp, &fs_param.s_feature_compat); 1479 free(tmp); 1480 1481 for (cpp = fs_types; *cpp; cpp++) { 1482 tmp = NULL; 1483 profile_get_string(profile, "fs_types", *cpp, 1484 "features", "", &tmp); 1485 if (tmp && *tmp) 1486 edit_feature(tmp, &fs_param.s_feature_compat); 1487 if (tmp) 1488 free(tmp); 1489 } 1490 tmp = get_string_from_profile(fs_types, "default_features", 1491 ""); 1492 } 1493 edit_feature(fs_features ? fs_features : tmp, 1494 &fs_param.s_feature_compat); 1495 if (tmp) 1496 free(tmp); 1497 1498 if (fs_param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { 1499 fs_types[0] = strdup("journal"); 1500 fs_types[1] = 0; 1501 } 1502 1503 if (verbose) { 1504 fputs(_("fs_types for mke2fs.conf resolution: "), stdout); 1505 print_str_list(fs_types); 1506 } 1507 1508 if (r_opt == EXT2_GOOD_OLD_REV && 1509 (fs_param.s_feature_compat || fs_param.s_feature_incompat || 1510 fs_param.s_feature_incompat)) { 1511 fprintf(stderr, _("Filesystem features not supported " 1512 "with revision 0 filesystems\n")); 1513 exit(1); 1514 } 1515 1516 if (s_opt > 0) { 1517 if (r_opt == EXT2_GOOD_OLD_REV) { 1518 fprintf(stderr, _("Sparse superblocks not supported " 1519 "with revision 0 filesystems\n")); 1520 exit(1); 1521 } 1522 fs_param.s_feature_ro_compat |= 1523 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 1524 } else if (s_opt == 0) 1525 fs_param.s_feature_ro_compat &= 1526 ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 1527 1528 if (journal_size != 0) { 1529 if (r_opt == EXT2_GOOD_OLD_REV) { 1530 fprintf(stderr, _("Journals not supported " 1531 "with revision 0 filesystems\n")); 1532 exit(1); 1533 } 1534 fs_param.s_feature_compat |= 1535 EXT3_FEATURE_COMPAT_HAS_JOURNAL; 1536 } 1537 1538 if (fs_param.s_feature_incompat & 1539 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { 1540 reserved_ratio = 0; 1541 fs_param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV; 1542 fs_param.s_feature_compat = 0; 1543 fs_param.s_feature_ro_compat = 0; 1544 } 1545 1546 if ((fs_param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) && 1547 (fs_param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE)) { 1548 fprintf(stderr, _("The resize_inode and meta_bg features " 1549 "are not compatible.\n" 1550 "They can not be both enabled " 1551 "simultaneously.\n")); 1552 exit(1); 1553 } 1554 1555 /* Set first meta blockgroup via an environment variable */ 1556 /* (this is mostly for debugging purposes) */ 1557 if ((fs_param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) && 1558 ((tmp = getenv("MKE2FS_FIRST_META_BG")))) 1559 fs_param.s_first_meta_bg = atoi(tmp); 1560 1561 /* Get the hardware sector size, if available */ 1562 retval = ext2fs_get_device_sectsize(device_name, §or_size); 1563 if (retval) { 1564 com_err(program_name, retval, 1565 _("while trying to determine hardware sector size")); 1566 exit(1); 1567 } 1568 1569 if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL) 1570 sector_size = atoi(tmp); 1571 1572 if (blocksize <= 0) { 1573 use_bsize = get_int_from_profile(fs_types, "blocksize", 4096); 1574 1575 if (use_bsize == -1) { 1576 use_bsize = sys_page_size; 1577 if ((linux_version_code < (2*65536 + 6*256)) && 1578 (use_bsize > 4096)) 1579 use_bsize = 4096; 1580 } 1581 if (sector_size && use_bsize < sector_size) 1582 use_bsize = sector_size; 1583 if ((blocksize < 0) && (use_bsize < (-blocksize))) 1584 use_bsize = -blocksize; 1585 blocksize = use_bsize; 1586 fs_param.s_blocks_count /= blocksize / 1024; 1587 } 1588 1589 if (inode_ratio == 0) { 1590 inode_ratio = get_int_from_profile(fs_types, "inode_ratio", 1591 8192); 1592 if (inode_ratio < blocksize) 1593 inode_ratio = blocksize; 1594 } 1595 1596 fs_param.s_log_frag_size = fs_param.s_log_block_size = 1597 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE); 1598 1599 blocksize = EXT2_BLOCK_SIZE(&fs_param); 1600 1601 lazy_itable_init = get_bool_from_profile(fs_types, 1602 "lazy_itable_init", 0); 1603 1604 /* Get options from profile */ 1605 for (cpp = fs_types; *cpp; cpp++) { 1606 tmp = NULL; 1607 profile_get_string(profile, "fs_types", *cpp, "options", "", &tmp); 1608 if (tmp && *tmp) 1609 parse_extended_opts(&fs_param, tmp); 1610 if (tmp) 1611 free(tmp); 1612 } 1613 1614 if (extended_opts) 1615 parse_extended_opts(&fs_param, extended_opts); 1616 1617 /* Since sparse_super is the default, we would only have a problem 1618 * here if it was explicitly disabled. 1619 */ 1620 if ((fs_param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) && 1621 !(fs_param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) { 1622 com_err(program_name, 0, 1623 _("reserved online resize blocks not supported " 1624 "on non-sparse filesystem")); 1625 exit(1); 1626 } 1627 1628 if (fs_param.s_blocks_per_group) { 1629 if (fs_param.s_blocks_per_group < 256 || 1630 fs_param.s_blocks_per_group > 8 * (unsigned) blocksize) { 1631 com_err(program_name, 0, 1632 _("blocks per group count out of range")); 1633 exit(1); 1634 } 1635 } 1636 1637 if (inode_size == 0) 1638 inode_size = get_int_from_profile(fs_types, "inode_size", 0); 1639 if (!flex_bg_size && (fs_param.s_feature_incompat & 1640 EXT4_FEATURE_INCOMPAT_FLEX_BG)) 1641 flex_bg_size = get_int_from_profile(fs_types, 1642 "flex_bg_size", 16); 1643 if (flex_bg_size) { 1644 if (!(fs_param.s_feature_incompat & 1645 EXT4_FEATURE_INCOMPAT_FLEX_BG)) { 1646 com_err(program_name, 0, 1647 _("Flex_bg feature not enabled, so " 1648 "flex_bg size may not be specified")); 1649 exit(1); 1650 } 1651 fs_param.s_log_groups_per_flex = int_log2(flex_bg_size); 1652 } 1653 1654 if (inode_size && fs_param.s_rev_level >= EXT2_DYNAMIC_REV) { 1655 if (inode_size < EXT2_GOOD_OLD_INODE_SIZE || 1656 inode_size > EXT2_BLOCK_SIZE(&fs_param) || 1657 inode_size & (inode_size - 1)) { 1658 com_err(program_name, 0, 1659 _("invalid inode size %d (min %d/max %d)"), 1660 inode_size, EXT2_GOOD_OLD_INODE_SIZE, 1661 blocksize); 1662 exit(1); 1663 } 1664 fs_param.s_inode_size = inode_size; 1665 } 1666 1667 /* Make sure number of inodes specified will fit in 32 bits */ 1668 if (num_inodes == 0) { 1669 unsigned long long n; 1670 n = (unsigned long long) fs_param.s_blocks_count * blocksize / inode_ratio; 1671 if (n > ~0U) { 1672 com_err(program_name, 0, 1673 _("too many inodes (%llu), raise inode ratio?"), n); 1674 exit(1); 1675 } 1676 } else if (num_inodes > ~0U) { 1677 com_err(program_name, 0, 1678 _("too many inodes (%llu), specify < 2^32 inodes"), 1679 num_inodes); 1680 exit(1); 1681 } 1682 /* 1683 * Calculate number of inodes based on the inode ratio 1684 */ 1685 fs_param.s_inodes_count = num_inodes ? num_inodes : 1686 ((__u64) fs_param.s_blocks_count * blocksize) 1687 / inode_ratio; 1688 1689 if ((((long long)fs_param.s_inodes_count) * 1690 (inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE)) >= 1691 (((long long)fs_param.s_blocks_count) * 1692 EXT2_BLOCK_SIZE(&fs_param))) { 1693 com_err(program_name, 0, _("inode_size (%u) * inodes_count " 1694 "(%u) too big for a\n\t" 1695 "filesystem with %lu blocks, " 1696 "specify higher inode_ratio (-i)\n\t" 1697 "or lower inode count (-N).\n"), 1698 inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE, 1699 fs_param.s_inodes_count, 1700 (unsigned long) fs_param.s_blocks_count); 1701 exit(1); 1702 } 1703 1704 /* 1705 * Calculate number of blocks to reserve 1706 */ 1707 fs_param.s_r_blocks_count = (unsigned int) (reserved_ratio * 1708 fs_param.s_blocks_count / 100.0); 1709} 1710 1711static int should_do_undo(const char *name) 1712{ 1713 errcode_t retval; 1714 io_channel channel; 1715 __u16 s_magic; 1716 struct ext2_super_block super; 1717 io_manager manager = unix_io_manager; 1718 int csum_flag, force_undo; 1719 1720 csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(&fs_param, 1721 EXT4_FEATURE_RO_COMPAT_GDT_CSUM); 1722 force_undo = get_int_from_profile(fs_types, "force_undo", 0); 1723 if (!force_undo && (!csum_flag || !lazy_itable_init)) 1724 return 0; 1725 1726 retval = manager->open(name, IO_FLAG_EXCLUSIVE, &channel); 1727 if (retval) { 1728 /* 1729 * We don't handle error cases instead we 1730 * declare that the file system doesn't exist 1731 * and let the rest of mke2fs take care of 1732 * error 1733 */ 1734 retval = 0; 1735 goto open_err_out; 1736 } 1737 1738 io_channel_set_blksize(channel, SUPERBLOCK_OFFSET); 1739 retval = io_channel_read_blk(channel, 1, -SUPERBLOCK_SIZE, &super); 1740 if (retval) { 1741 retval = 0; 1742 goto err_out; 1743 } 1744 1745#if defined(WORDS_BIGENDIAN) 1746 s_magic = ext2fs_swab16(super.s_magic); 1747#else 1748 s_magic = super.s_magic; 1749#endif 1750 1751 if (s_magic == EXT2_SUPER_MAGIC) 1752 retval = 1; 1753 1754err_out: 1755 io_channel_close(channel); 1756 1757open_err_out: 1758 1759 return retval; 1760} 1761 1762static int mke2fs_setup_tdb(const char *name, io_manager *io_ptr) 1763{ 1764 errcode_t retval = 0; 1765 char *tdb_dir, tdb_file[PATH_MAX]; 1766 char *device_name, *tmp_name; 1767 1768 /* 1769 * Configuration via a conf file would be 1770 * nice 1771 */ 1772 tdb_dir = getenv("E2FSPROGS_UNDO_DIR"); 1773 if (!tdb_dir) 1774 profile_get_string(profile, "defaults", 1775 "undo_dir", 0, "/var/lib/e2fsprogs", 1776 &tdb_dir); 1777 1778 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) || 1779 access(tdb_dir, W_OK)) 1780 return 0; 1781 1782 tmp_name = strdup(name); 1783 device_name = basename(tmp_name); 1784 sprintf(tdb_file, "%s/mke2fs-%s.e2undo", tdb_dir, device_name); 1785 1786 if (!access(tdb_file, F_OK)) { 1787 if (unlink(tdb_file) < 0) { 1788 retval = errno; 1789 com_err(program_name, retval, 1790 _("while trying to delete %s"), 1791 tdb_file); 1792 return retval; 1793 } 1794 } 1795 1796 set_undo_io_backing_manager(*io_ptr); 1797 *io_ptr = undo_io_manager; 1798 set_undo_io_backup_file(tdb_file); 1799 printf(_("Overwriting existing filesystem; this can be undone " 1800 "using the command:\n" 1801 " e2undo %s %s\n\n"), tdb_file, name); 1802 1803 free(tmp_name); 1804 return retval; 1805} 1806 1807int main (int argc, char *argv[]) 1808{ 1809 errcode_t retval = 0; 1810 ext2_filsys fs; 1811 badblocks_list bb_list = 0; 1812 unsigned int journal_blocks; 1813 unsigned int i; 1814 int val; 1815 io_manager io_ptr; 1816 char tdb_string[40]; 1817 1818#ifdef ENABLE_NLS 1819 setlocale(LC_MESSAGES, ""); 1820 setlocale(LC_CTYPE, ""); 1821 bindtextdomain(NLS_CAT_NAME, LOCALEDIR); 1822 textdomain(NLS_CAT_NAME); 1823#endif 1824 PRS(argc, argv); 1825 1826#ifdef CONFIG_TESTIO_DEBUG 1827 io_ptr = test_io_manager; 1828 test_io_backing_manager = unix_io_manager; 1829#else 1830 io_ptr = unix_io_manager; 1831#endif 1832 1833 if (should_do_undo(device_name)) { 1834 retval = mke2fs_setup_tdb(device_name, &io_ptr); 1835 if (retval) 1836 exit(1); 1837 } 1838 1839 /* 1840 * Initialize the superblock.... 1841 */ 1842 retval = ext2fs_initialize(device_name, EXT2_FLAG_EXCLUSIVE, &fs_param, 1843 io_ptr, &fs); 1844 if (retval) { 1845 com_err(device_name, retval, _("while setting up superblock")); 1846 exit(1); 1847 } 1848 sprintf(tdb_string, "tdb_data_size=%d", fs->blocksize <= 4096 ? 1849 32768 : fs->blocksize * 8); 1850 io_channel_set_options(fs->io, tdb_string); 1851 1852 if (fs_param.s_flags & EXT2_FLAGS_TEST_FILESYS) 1853 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS; 1854 1855 /* 1856 * Wipe out the old on-disk superblock 1857 */ 1858 if (!noaction) 1859 zap_sector(fs, 2, 6); 1860 1861 /* 1862 * Generate a UUID for it... 1863 */ 1864 uuid_generate(fs->super->s_uuid); 1865 1866 /* 1867 * Initialize the directory index variables 1868 */ 1869 fs->super->s_def_hash_version = EXT2_HASH_TEA; 1870 uuid_generate((unsigned char *) fs->super->s_hash_seed); 1871 1872 /* 1873 * Add "jitter" to the superblock's check interval so that we 1874 * don't check all the filesystems at the same time. We use a 1875 * kludgy hack of using the UUID to derive a random jitter value. 1876 */ 1877 for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++) 1878 val += fs->super->s_uuid[i]; 1879 fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT; 1880 1881 /* 1882 * Override the creator OS, if applicable 1883 */ 1884 if (creator_os && !set_os(fs->super, creator_os)) { 1885 com_err (program_name, 0, _("unknown os - %s"), creator_os); 1886 exit(1); 1887 } 1888 1889 /* 1890 * For the Hurd, we will turn off filetype since it doesn't 1891 * support it. 1892 */ 1893 if (fs->super->s_creator_os == EXT2_OS_HURD) 1894 fs->super->s_feature_incompat &= 1895 ~EXT2_FEATURE_INCOMPAT_FILETYPE; 1896 1897 /* 1898 * Set the volume label... 1899 */ 1900 if (volume_label) { 1901 memset(fs->super->s_volume_name, 0, 1902 sizeof(fs->super->s_volume_name)); 1903 strncpy(fs->super->s_volume_name, volume_label, 1904 sizeof(fs->super->s_volume_name)); 1905 } 1906 1907 /* 1908 * Set the last mount directory 1909 */ 1910 if (mount_dir) { 1911 memset(fs->super->s_last_mounted, 0, 1912 sizeof(fs->super->s_last_mounted)); 1913 strncpy(fs->super->s_last_mounted, mount_dir, 1914 sizeof(fs->super->s_last_mounted)); 1915 } 1916 1917 if (!quiet || noaction) 1918 show_stats(fs); 1919 1920 if (noaction) 1921 exit(0); 1922 1923 if (fs->super->s_feature_incompat & 1924 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { 1925 create_journal_dev(fs); 1926 exit(ext2fs_close(fs) ? 1 : 0); 1927 } 1928 1929 if (bad_blocks_filename) 1930 read_bb_file(fs, &bb_list, bad_blocks_filename); 1931 if (cflag) 1932 test_disk(fs, &bb_list); 1933 1934 handle_bad_blocks(fs, bb_list); 1935 fs->stride = fs_stride = fs->super->s_raid_stride; 1936 retval = ext2fs_allocate_tables(fs); 1937 if (retval) { 1938 com_err(program_name, retval, 1939 _("while trying to allocate filesystem tables")); 1940 exit(1); 1941 } 1942 if (super_only) { 1943 fs->super->s_state |= EXT2_ERROR_FS; 1944 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY); 1945 } else { 1946 /* rsv must be a power of two (64kB is MD RAID sb alignment) */ 1947 unsigned int rsv = 65536 / fs->blocksize; 1948 unsigned long blocks = fs->super->s_blocks_count; 1949 unsigned long start; 1950 blk_t ret_blk; 1951 1952#ifdef ZAP_BOOTBLOCK 1953 zap_sector(fs, 0, 2); 1954#endif 1955 1956 /* 1957 * Wipe out any old MD RAID (or other) metadata at the end 1958 * of the device. This will also verify that the device is 1959 * as large as we think. Be careful with very small devices. 1960 */ 1961 start = (blocks & ~(rsv - 1)); 1962 if (start > rsv) 1963 start -= rsv; 1964 if (start > 0) 1965 retval = ext2fs_zero_blocks(fs, start, blocks - start, 1966 &ret_blk, NULL); 1967 1968 if (retval) { 1969 com_err(program_name, retval, 1970 _("while zeroing block %u at end of filesystem"), 1971 ret_blk); 1972 } 1973 write_inode_tables(fs, lazy_itable_init); 1974 create_root_dir(fs); 1975 create_lost_and_found(fs); 1976 reserve_inodes(fs); 1977 create_bad_block_inode(fs, bb_list); 1978 if (fs->super->s_feature_compat & 1979 EXT2_FEATURE_COMPAT_RESIZE_INODE) { 1980 retval = ext2fs_create_resize_inode(fs); 1981 if (retval) { 1982 com_err("ext2fs_create_resize_inode", retval, 1983 _("while reserving blocks for online resize")); 1984 exit(1); 1985 } 1986 } 1987 } 1988 1989 if (journal_device) { 1990 ext2_filsys jfs; 1991 1992 if (!force) 1993 check_plausibility(journal_device); 1994 check_mount(journal_device, force, _("journal")); 1995 1996 retval = ext2fs_open(journal_device, EXT2_FLAG_RW| 1997 EXT2_FLAG_JOURNAL_DEV_OK, 0, 1998 fs->blocksize, unix_io_manager, &jfs); 1999 if (retval) { 2000 com_err(program_name, retval, 2001 _("while trying to open journal device %s\n"), 2002 journal_device); 2003 exit(1); 2004 } 2005 if (!quiet) { 2006 printf(_("Adding journal to device %s: "), 2007 journal_device); 2008 fflush(stdout); 2009 } 2010 retval = ext2fs_add_journal_device(fs, jfs); 2011 if(retval) { 2012 com_err (program_name, retval, 2013 _("\n\twhile trying to add journal to device %s"), 2014 journal_device); 2015 exit(1); 2016 } 2017 if (!quiet) 2018 printf(_("done\n")); 2019 ext2fs_close(jfs); 2020 free(journal_device); 2021 } else if ((journal_size) || 2022 (fs_param.s_feature_compat & 2023 EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 2024 journal_blocks = figure_journal_size(journal_size, fs); 2025 2026 if (!journal_blocks) { 2027 fs->super->s_feature_compat &= 2028 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 2029 goto no_journal; 2030 } 2031 if (!quiet) { 2032 printf(_("Creating journal (%u blocks): "), 2033 journal_blocks); 2034 fflush(stdout); 2035 } 2036 retval = ext2fs_add_journal_inode(fs, journal_blocks, 2037 journal_flags); 2038 if (retval) { 2039 com_err (program_name, retval, 2040 _("\n\twhile trying to create journal")); 2041 exit(1); 2042 } 2043 if (!quiet) 2044 printf(_("done\n")); 2045 } 2046no_journal: 2047 2048 if (!quiet) 2049 printf(_("Writing superblocks and " 2050 "filesystem accounting information: ")); 2051 retval = ext2fs_flush(fs); 2052 if (retval) { 2053 fprintf(stderr, 2054 _("\nWarning, had trouble writing out superblocks.")); 2055 } 2056 if (!quiet) { 2057 printf(_("done\n\n")); 2058 if (!getenv("MKE2FS_SKIP_CHECK_MSG")) 2059 print_check_message(fs); 2060 } 2061 val = ext2fs_close(fs); 2062 remove_error_table(&et_ext2_error_table); 2063 remove_error_table(&et_prof_error_table); 2064 profile_release(profile); 2065 return (retval || val) ? 1 : 0; 2066} 2067