mke2fs.c revision da292aa9afe3ece2f6ab072ed88933b762ebdf4f
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 30extern char *optarg; 31extern 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 65extern int isatty(int); 66extern FILE *fpopen(const char *cmd, const char *mode); 67 68const char * program_name = "mke2fs"; 69const char * device_name /* = NULL */; 70 71/* Command line options */ 72int cflag; 73int verbose; 74int quiet; 75int super_only; 76int force; 77int noaction; 78int journal_size; 79int journal_flags; 80int lazy_itable_init; 81char *bad_blocks_filename; 82__u32 fs_stride; 83 84struct ext2_super_block fs_param; 85char *creator_os; 86char *volume_label; 87char *mount_dir; 88char *journal_device; 89int sync_kludge; /* Set using the MKE2FS_SYNC env. option */ 90 91profile_t profile; 92 93int sys_page_size = 4096; 94int linux_version_code = 0; 95 96static void usage(void) 97{ 98 fprintf(stderr, _("Usage: %s [-c|-l filename] [-b block-size] " 99 "[-f fragment-size]\n\t[-i bytes-per-inode] [-I inode-size] " 100 "[-J journal-options]\n" 101 "\t[-N number-of-inodes] [-m reserved-blocks-percentage] " 102 "[-o creator-os]\n\t[-g blocks-per-group] [-L volume-label] " 103 "[-M last-mounted-directory]\n\t[-O feature[,...]] " 104 "[-r fs-revision] [-E extended-option[,...]]\n" 105 "\t[-T fs-type] [-jnqvFSV] device [blocks-count]\n"), 106 program_name); 107 exit(1); 108} 109 110static int int_log2(int arg) 111{ 112 int l = 0; 113 114 arg >>= 1; 115 while (arg) { 116 l++; 117 arg >>= 1; 118 } 119 return l; 120} 121 122static int int_log10(unsigned int arg) 123{ 124 int l; 125 126 for (l=0; arg ; l++) 127 arg = arg / 10; 128 return l; 129} 130 131static int parse_version_number(const char *s) 132{ 133 int major, minor, rev; 134 char *endptr; 135 const char *cp = s; 136 137 if (!s) 138 return 0; 139 major = strtol(cp, &endptr, 10); 140 if (cp == endptr || *endptr != '.') 141 return 0; 142 cp = endptr + 1; 143 minor = strtol(cp, &endptr, 10); 144 if (cp == endptr || *endptr != '.') 145 return 0; 146 cp = endptr + 1; 147 rev = strtol(cp, &endptr, 10); 148 if (cp == endptr) 149 return 0; 150 return ((((major * 256) + minor) * 256) + rev); 151} 152 153/* 154 * Helper function for read_bb_file and test_disk 155 */ 156static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk) 157{ 158 fprintf(stderr, _("Bad block %u out of range; ignored.\n"), blk); 159 return; 160} 161 162/* 163 * Reads the bad blocks list from a file 164 */ 165static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list, 166 const char *bad_blocks_file) 167{ 168 FILE *f; 169 errcode_t retval; 170 171 f = fopen(bad_blocks_file, "r"); 172 if (!f) { 173 com_err("read_bad_blocks_file", errno, 174 _("while trying to open %s"), bad_blocks_file); 175 exit(1); 176 } 177 retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block); 178 fclose (f); 179 if (retval) { 180 com_err("ext2fs_read_bb_FILE", retval, 181 _("while reading in list of bad blocks from file")); 182 exit(1); 183 } 184} 185 186/* 187 * Runs the badblocks program to test the disk 188 */ 189static 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 215static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list) 216{ 217 dgrp_t i; 218 blk_t j; 219 unsigned must_be_good; 220 blk_t blk; 221 badblocks_iterate bb_iter; 222 errcode_t retval; 223 blk_t group_block; 224 int group; 225 int group_bad; 226 227 if (!bb_list) 228 return; 229 230 /* 231 * The primary superblock and group descriptors *must* be 232 * good; if not, abort. 233 */ 234 must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks; 235 for (i = fs->super->s_first_data_block; i <= must_be_good; i++) { 236 if (ext2fs_badblocks_list_test(bb_list, i)) { 237 fprintf(stderr, _("Block %d in primary " 238 "superblock/group descriptor area bad.\n"), i); 239 fprintf(stderr, _("Blocks %u through %u must be good " 240 "in order to build a filesystem.\n"), 241 fs->super->s_first_data_block, must_be_good); 242 fputs(_("Aborting....\n"), stderr); 243 exit(1); 244 } 245 } 246 247 /* 248 * See if any of the bad blocks are showing up in the backup 249 * superblocks and/or group descriptors. If so, issue a 250 * warning and adjust the block counts appropriately. 251 */ 252 group_block = fs->super->s_first_data_block + 253 fs->super->s_blocks_per_group; 254 255 for (i = 1; i < fs->group_desc_count; i++) { 256 group_bad = 0; 257 for (j=0; j < fs->desc_blocks+1; j++) { 258 if (ext2fs_badblocks_list_test(bb_list, 259 group_block + j)) { 260 if (!group_bad) 261 fprintf(stderr, 262_("Warning: the backup superblock/group descriptors at block %u contain\n" 263" bad blocks.\n\n"), 264 group_block); 265 group_bad++; 266 group = ext2fs_group_of_blk(fs, group_block+j); 267 fs->group_desc[group].bg_free_blocks_count++; 268 ext2fs_group_desc_csum_set(fs, group); 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 */ 292struct progress_struct { 293 char format[20]; 294 char backup[80]; 295 __u32 max; 296 int skip_progress; 297}; 298 299static 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 327static 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 335static 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 */ 353static 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 404static void write_inode_tables(ext2_filsys fs, int lazy_flag) 405{ 406 errcode_t retval; 407 blk_t blk; 408 dgrp_t i; 409 int num, ipb; 410 struct progress_struct progress; 411 412 if (quiet) 413 memset(&progress, 0, sizeof(progress)); 414 else 415 progress_init(&progress, _("Writing inode tables: "), 416 fs->group_desc_count); 417 418 for (i = 0; i < fs->group_desc_count; i++) { 419 progress_update(&progress, i); 420 421 blk = fs->group_desc[i].bg_inode_table; 422 num = fs->inode_blocks_per_group; 423 424 if (lazy_flag) { 425 ipb = fs->blocksize / EXT2_INODE_SIZE(fs->super); 426 printf("bg %i, num %d, ipb %d, unused %d ", 427 i, num, ipb, fs->group_desc[i].bg_itable_unused); 428 num = ((((fs->super->s_inodes_per_group - 429 fs->group_desc[i].bg_itable_unused) * 430 EXT2_INODE_SIZE(fs->super)) + 431 EXT2_BLOCK_SIZE(fs->super) - 1) / 432 EXT2_BLOCK_SIZE(fs->super)); 433 printf("new num %d\n", num); 434 } else { 435 /* The kernel doesn't need to zero the itable blocks */ 436 fs->group_desc[i].bg_flags |= EXT2_BG_INODE_ZEROED; 437 ext2fs_group_desc_csum_set(fs, i); 438 } 439 retval = zero_blocks(fs, blk, num, 0, &blk, &num); 440 if (retval) { 441 fprintf(stderr, _("\nCould not write %d " 442 "blocks in inode table starting at %u: %s\n"), 443 num, blk, error_message(retval)); 444 exit(1); 445 } 446 if (sync_kludge) { 447 if (sync_kludge == 1) 448 sync(); 449 else if ((i % sync_kludge) == 0) 450 sync(); 451 } 452 } 453 zero_blocks(0, 0, 0, 0, 0, 0); 454 progress_close(&progress); 455} 456 457static void create_root_dir(ext2_filsys fs) 458{ 459 errcode_t retval; 460 struct ext2_inode inode; 461 __u32 uid, gid; 462 463 retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0); 464 if (retval) { 465 com_err("ext2fs_mkdir", retval, _("while creating root dir")); 466 exit(1); 467 } 468 if (geteuid()) { 469 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode); 470 if (retval) { 471 com_err("ext2fs_read_inode", retval, 472 _("while reading root inode")); 473 exit(1); 474 } 475 uid = getuid(); 476 inode.i_uid = uid; 477 ext2fs_set_i_uid_high(inode, uid >> 16); 478 if (uid) { 479 gid = getgid(); 480 inode.i_gid = gid; 481 ext2fs_set_i_gid_high(inode, gid >> 16); 482 } 483 retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode); 484 if (retval) { 485 com_err("ext2fs_write_inode", retval, 486 _("while setting root inode ownership")); 487 exit(1); 488 } 489 } 490} 491 492static void create_lost_and_found(ext2_filsys fs) 493{ 494 unsigned int lpf_size = 0; 495 errcode_t retval; 496 ext2_ino_t ino; 497 const char *name = "lost+found"; 498 int i; 499 500 fs->umask = 077; 501 retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name); 502 if (retval) { 503 com_err("ext2fs_mkdir", retval, 504 _("while creating /lost+found")); 505 exit(1); 506 } 507 508 retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino); 509 if (retval) { 510 com_err("ext2_lookup", retval, 511 _("while looking up /lost+found")); 512 exit(1); 513 } 514 515 for (i=1; i < EXT2_NDIR_BLOCKS; i++) { 516 /* Ensure that lost+found is at least 2 blocks, so we always 517 * test large empty blocks for big-block filesystems. */ 518 if ((lpf_size += fs->blocksize) >= 16*1024 && 519 lpf_size >= 2 * fs->blocksize) 520 break; 521 retval = ext2fs_expand_dir(fs, ino); 522 if (retval) { 523 com_err("ext2fs_expand_dir", retval, 524 _("while expanding /lost+found")); 525 exit(1); 526 } 527 } 528} 529 530static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list) 531{ 532 errcode_t retval; 533 534 ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO); 535 ext2fs_inode_alloc_stats2(fs, EXT2_BAD_INO, +1, 0); 536 retval = ext2fs_update_bb_inode(fs, bb_list); 537 if (retval) { 538 com_err("ext2fs_update_bb_inode", retval, 539 _("while setting bad block inode")); 540 exit(1); 541 } 542 543} 544 545static void reserve_inodes(ext2_filsys fs) 546{ 547 ext2_ino_t i; 548 int group; 549 550 for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) 551 ext2fs_inode_alloc_stats2(fs, i, +1, 0); 552 ext2fs_mark_ib_dirty(fs); 553} 554 555#define BSD_DISKMAGIC (0x82564557UL) /* The disk magic number */ 556#define BSD_MAGICDISK (0x57455682UL) /* The disk magic number reversed */ 557#define BSD_LABEL_OFFSET 64 558 559static void zap_sector(ext2_filsys fs, int sect, int nsect) 560{ 561 char *buf; 562 int retval; 563 unsigned int *magic; 564 565 buf = malloc(512*nsect); 566 if (!buf) { 567 printf(_("Out of memory erasing sectors %d-%d\n"), 568 sect, sect + nsect - 1); 569 exit(1); 570 } 571 572 if (sect == 0) { 573 /* Check for a BSD disklabel, and don't erase it if so */ 574 retval = io_channel_read_blk(fs->io, 0, -512, buf); 575 if (retval) 576 fprintf(stderr, 577 _("Warning: could not read block 0: %s\n"), 578 error_message(retval)); 579 else { 580 magic = (unsigned int *) (buf + BSD_LABEL_OFFSET); 581 if ((*magic == BSD_DISKMAGIC) || 582 (*magic == BSD_MAGICDISK)) 583 return; 584 } 585 } 586 587 memset(buf, 0, 512*nsect); 588 io_channel_set_blksize(fs->io, 512); 589 retval = io_channel_write_blk(fs->io, sect, -512*nsect, buf); 590 io_channel_set_blksize(fs->io, fs->blocksize); 591 free(buf); 592 if (retval) 593 fprintf(stderr, _("Warning: could not erase sector %d: %s\n"), 594 sect, error_message(retval)); 595} 596 597static void create_journal_dev(ext2_filsys fs) 598{ 599 struct progress_struct progress; 600 errcode_t retval; 601 char *buf; 602 blk_t blk; 603 int count; 604 605 retval = ext2fs_create_journal_superblock(fs, 606 fs->super->s_blocks_count, 0, &buf); 607 if (retval) { 608 com_err("create_journal_dev", retval, 609 _("while initializing journal superblock")); 610 exit(1); 611 } 612 if (quiet) 613 memset(&progress, 0, sizeof(progress)); 614 else 615 progress_init(&progress, _("Zeroing journal device: "), 616 fs->super->s_blocks_count); 617 618 retval = zero_blocks(fs, 0, fs->super->s_blocks_count, 619 &progress, &blk, &count); 620 if (retval) { 621 com_err("create_journal_dev", retval, 622 _("while zeroing journal device (block %u, count %d)"), 623 blk, count); 624 exit(1); 625 } 626 zero_blocks(0, 0, 0, 0, 0, 0); 627 628 retval = io_channel_write_blk(fs->io, 629 fs->super->s_first_data_block+1, 630 1, buf); 631 if (retval) { 632 com_err("create_journal_dev", retval, 633 _("while writing journal superblock")); 634 exit(1); 635 } 636 progress_close(&progress); 637} 638 639static void show_stats(ext2_filsys fs) 640{ 641 struct ext2_super_block *s = fs->super; 642 char buf[80]; 643 char *os; 644 blk_t group_block; 645 dgrp_t i; 646 int need, col_left; 647 648 if (fs_param.s_blocks_count != s->s_blocks_count) 649 fprintf(stderr, _("warning: %u blocks unused.\n\n"), 650 fs_param.s_blocks_count - s->s_blocks_count); 651 652 memset(buf, 0, sizeof(buf)); 653 strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name)); 654 printf(_("Filesystem label=%s\n"), buf); 655 fputs(_("OS type: "), stdout); 656 os = e2p_os2string(fs->super->s_creator_os); 657 fputs(os, stdout); 658 free(os); 659 printf("\n"); 660 printf(_("Block size=%u (log=%u)\n"), fs->blocksize, 661 s->s_log_block_size); 662 printf(_("Fragment size=%u (log=%u)\n"), fs->fragsize, 663 s->s_log_frag_size); 664 printf(_("%u inodes, %u blocks\n"), s->s_inodes_count, 665 s->s_blocks_count); 666 printf(_("%u blocks (%2.2f%%) reserved for the super user\n"), 667 s->s_r_blocks_count, 668 100.0 * s->s_r_blocks_count / s->s_blocks_count); 669 printf(_("First data block=%u\n"), s->s_first_data_block); 670 if (s->s_reserved_gdt_blocks) 671 printf(_("Maximum filesystem blocks=%lu\n"), 672 (s->s_reserved_gdt_blocks + fs->desc_blocks) * 673 EXT2_DESC_PER_BLOCK(s) * s->s_blocks_per_group); 674 if (fs->group_desc_count > 1) 675 printf(_("%u block groups\n"), fs->group_desc_count); 676 else 677 printf(_("%u block group\n"), fs->group_desc_count); 678 printf(_("%u blocks per group, %u fragments per group\n"), 679 s->s_blocks_per_group, s->s_frags_per_group); 680 printf(_("%u inodes per group\n"), s->s_inodes_per_group); 681 682 if (fs->group_desc_count == 1) { 683 printf("\n"); 684 return; 685 } 686 687 printf(_("Superblock backups stored on blocks: ")); 688 group_block = s->s_first_data_block; 689 col_left = 0; 690 for (i = 1; i < fs->group_desc_count; i++) { 691 group_block += s->s_blocks_per_group; 692 if (!ext2fs_bg_has_super(fs, i)) 693 continue; 694 if (i != 1) 695 printf(", "); 696 need = int_log10(group_block) + 2; 697 if (need > col_left) { 698 printf("\n\t"); 699 col_left = 72; 700 } 701 col_left -= need; 702 printf("%u", group_block); 703 } 704 printf("\n\n"); 705} 706 707/* 708 * Set the S_CREATOR_OS field. Return true if OS is known, 709 * otherwise, 0. 710 */ 711static int set_os(struct ext2_super_block *sb, char *os) 712{ 713 if (isdigit (*os)) 714 sb->s_creator_os = atoi (os); 715 else if (strcasecmp(os, "linux") == 0) 716 sb->s_creator_os = EXT2_OS_LINUX; 717 else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0) 718 sb->s_creator_os = EXT2_OS_HURD; 719 else if (strcasecmp(os, "freebsd") == 0) 720 sb->s_creator_os = EXT2_OS_FREEBSD; 721 else if (strcasecmp(os, "lites") == 0) 722 sb->s_creator_os = EXT2_OS_LITES; 723 else 724 return 0; 725 return 1; 726} 727 728#define PATH_SET "PATH=/sbin" 729 730static void parse_extended_opts(struct ext2_super_block *param, 731 const char *opts) 732{ 733 char *buf, *token, *next, *p, *arg, *badopt = 0; 734 int len; 735 int r_usage = 0; 736 737 len = strlen(opts); 738 buf = malloc(len+1); 739 if (!buf) { 740 fprintf(stderr, 741 _("Couldn't allocate memory to parse options!\n")); 742 exit(1); 743 } 744 strcpy(buf, opts); 745 for (token = buf; token && *token; token = next) { 746 p = strchr(token, ','); 747 next = 0; 748 if (p) { 749 *p = 0; 750 next = p+1; 751 } 752 arg = strchr(token, '='); 753 if (arg) { 754 *arg = 0; 755 arg++; 756 } 757 if (strcmp(token, "stride") == 0) { 758 if (!arg) { 759 r_usage++; 760 badopt = token; 761 continue; 762 } 763 param->s_raid_stride = strtoul(arg, &p, 0); 764 if (*p || (param->s_raid_stride == 0)) { 765 fprintf(stderr, 766 _("Invalid stride parameter: %s\n"), 767 arg); 768 r_usage++; 769 continue; 770 } 771 } else if (strcmp(token, "stripe-width") == 0 || 772 strcmp(token, "stripe_width") == 0) { 773 if (!arg) { 774 r_usage++; 775 badopt = token; 776 continue; 777 } 778 param->s_raid_stripe_width = strtoul(arg, &p, 0); 779 if (*p || (param->s_raid_stripe_width == 0)) { 780 fprintf(stderr, 781 _("Invalid stripe-width parameter: %s\n"), 782 arg); 783 r_usage++; 784 continue; 785 } 786 } else if (!strcmp(token, "resize")) { 787 unsigned long resize, bpg, rsv_groups; 788 unsigned long group_desc_count, desc_blocks; 789 unsigned int gdpb, blocksize; 790 int rsv_gdb; 791 792 if (!arg) { 793 r_usage++; 794 badopt = token; 795 continue; 796 } 797 798 resize = parse_num_blocks(arg, 799 param->s_log_block_size); 800 801 if (resize == 0) { 802 fprintf(stderr, 803 _("Invalid resize parameter: %s\n"), 804 arg); 805 r_usage++; 806 continue; 807 } 808 if (resize <= param->s_blocks_count) { 809 fprintf(stderr, 810 _("The resize maximum must be greater " 811 "than the filesystem size.\n")); 812 r_usage++; 813 continue; 814 } 815 816 blocksize = EXT2_BLOCK_SIZE(param); 817 bpg = param->s_blocks_per_group; 818 if (!bpg) 819 bpg = blocksize * 8; 820 gdpb = EXT2_DESC_PER_BLOCK(param); 821 group_desc_count = 822 ext2fs_div_ceil(param->s_blocks_count, bpg); 823 desc_blocks = (group_desc_count + 824 gdpb - 1) / gdpb; 825 rsv_groups = ext2fs_div_ceil(resize, bpg); 826 rsv_gdb = ext2fs_div_ceil(rsv_groups, gdpb) - 827 desc_blocks; 828 if (rsv_gdb > (int) EXT2_ADDR_PER_BLOCK(param)) 829 rsv_gdb = EXT2_ADDR_PER_BLOCK(param); 830 831 if (rsv_gdb > 0) { 832 if (param->s_rev_level == EXT2_GOOD_OLD_REV) { 833 fprintf(stderr, 834 _("On-line resizing not supported with revision 0 filesystems\n")); 835 free(buf); 836 exit(1); 837 } 838 param->s_feature_compat |= 839 EXT2_FEATURE_COMPAT_RESIZE_INODE; 840 841 param->s_reserved_gdt_blocks = rsv_gdb; 842 } 843 } else if (!strcmp(token, "test_fs")) { 844 param->s_flags |= EXT2_FLAGS_TEST_FILESYS; 845 } else if (!strcmp(token, "lazy_itable_init")) { 846 if (!arg) { 847 r_usage++; 848 badopt = token; 849 continue; 850 } 851 lazy_itable_init = strtoul(arg, &p, 0); 852 } else { 853 r_usage++; 854 badopt = token; 855 } 856 } 857 if (r_usage) { 858 fprintf(stderr, _("\nBad option(s) specified: %s\n\n" 859 "Extended options are separated by commas, " 860 "and may take an argument which\n" 861 "\tis set off by an equals ('=') sign.\n\n" 862 "Valid extended options are:\n" 863 "\tstride=<RAID per-disk data chunk in blocks>\n" 864 "\tstripe-width=<RAID stride * data disks in blocks>\n" 865 "\tresize=<resize maximum size in blocks>\n" 866 "\tlazy_itable_init=<0 to disable, 1 to enable>\n" 867 "\ttest_fs\n\n"), 868 badopt ? badopt : ""); 869 free(buf); 870 exit(1); 871 } 872 if (param->s_raid_stride && 873 (param->s_raid_stripe_width % param->s_raid_stride) != 0) 874 fprintf(stderr, _("\nWarning: RAID stripe-width %u not an even " 875 "multiple of stride %u.\n\n"), 876 param->s_raid_stripe_width, param->s_raid_stride); 877 878 free(buf); 879} 880 881static __u32 ok_features[3] = { 882 /* Compat */ 883 EXT3_FEATURE_COMPAT_HAS_JOURNAL | 884 EXT2_FEATURE_COMPAT_RESIZE_INODE | 885 EXT2_FEATURE_COMPAT_DIR_INDEX | 886 EXT2_FEATURE_COMPAT_EXT_ATTR, 887 /* Incompat */ 888 EXT2_FEATURE_INCOMPAT_FILETYPE| 889 EXT3_FEATURE_INCOMPAT_EXTENTS| 890 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV| 891 EXT2_FEATURE_INCOMPAT_META_BG| 892 EXT4_FEATURE_INCOMPAT_FLEX_BG, 893 /* R/O compat */ 894 EXT2_FEATURE_RO_COMPAT_LARGE_FILE| 895 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| 896 EXT4_FEATURE_RO_COMPAT_GDT_CSUM 897}; 898 899 900static void syntax_err_report(const char *filename, long err, int line_num) 901{ 902 fprintf(stderr, 903 _("Syntax error in mke2fs config file (%s, line #%d)\n\t%s\n"), 904 filename, line_num, error_message(err)); 905 exit(1); 906} 907 908static const char *config_fn[] = { ROOT_SYSCONFDIR "/mke2fs.conf", 0 }; 909 910static void edit_feature(const char *str, __u32 *compat_array) 911{ 912 if (!str) 913 return; 914 915 if (e2p_edit_feature(str, compat_array, ok_features)) { 916 fprintf(stderr, _("Invalid filesystem option set: %s\n"), 917 str); 918 exit(1); 919 } 920} 921 922struct str_list { 923 char **list; 924 int num; 925 int max; 926}; 927 928static errcode_t init_list(struct str_list *sl) 929{ 930 sl->num = 0; 931 sl->max = 0; 932 sl->list = malloc((sl->max+1) * sizeof(char *)); 933 if (!sl->list) 934 return ENOMEM; 935 sl->list[0] = 0; 936 return 0; 937} 938 939static errcode_t push_string(struct str_list *sl, const char *str) 940{ 941 char **new_list; 942 943 if (sl->num >= sl->max) { 944 sl->max += 2; 945 new_list = realloc(sl->list, (sl->max+1) * sizeof(char *)); 946 if (!new_list) 947 return ENOMEM; 948 sl->list = new_list; 949 } 950 sl->list[sl->num] = malloc(strlen(str)+1); 951 if (sl->list[sl->num] == 0) 952 return ENOMEM; 953 strcpy(sl->list[sl->num], str); 954 sl->num++; 955 sl->list[sl->num] = 0; 956 return 0; 957} 958 959static void print_str_list(char **list) 960{ 961 char **cpp; 962 963 for (cpp = list; *cpp; cpp++) { 964 printf("'%s'", *cpp); 965 if (cpp[1]) 966 fputs(", ", stdout); 967 } 968 fputc('\n', stdout); 969} 970 971static char **parse_fs_type(const char *fs_type, 972 const char *usage_types, 973 struct ext2_super_block *fs_param, 974 char *progname) 975{ 976 const char *ext_type = 0; 977 char *parse_str; 978 char *profile_type = 0; 979 char *cp, *t; 980 const char *size_type; 981 struct str_list list; 982 int state = 0; 983 unsigned long meg; 984 985 if (init_list(&list)) 986 return 0; 987 988 if (fs_type) 989 ext_type = fs_type; 990 else if (progname) { 991 ext_type = strrchr(progname, '/'); 992 if (ext_type) 993 ext_type++; 994 else 995 ext_type = progname; 996 997 if (!strncmp(ext_type, "mkfs.", 5)) { 998 ext_type += 5; 999 if (ext_type[0] == 0) 1000 ext_type = 0; 1001 } else 1002 ext_type = 0; 1003 } 1004 1005 if (!ext_type) { 1006 profile_get_string(profile, "defaults", "fs_type", 0, 1007 "ext2", &profile_type); 1008 ext_type = profile_type; 1009 if (!strcmp(ext_type, "ext2") && (journal_size != 0)) 1010 ext_type = "ext3"; 1011 } 1012 1013 meg = (1024 * 1024) / EXT2_BLOCK_SIZE(fs_param); 1014 if (fs_param->s_blocks_count < 3 * meg) 1015 size_type = "floppy"; 1016 else if (fs_param->s_blocks_count < 512 * meg) 1017 size_type = "small"; 1018 else 1019 size_type = "default"; 1020 1021 if (!usage_types) 1022 usage_types = size_type; 1023 1024 parse_str = malloc(usage_types ? strlen(usage_types)+1 : 1); 1025 if (!parse_str) { 1026 free(list.list); 1027 return 0; 1028 } 1029 if (usage_types) 1030 strcpy(parse_str, usage_types); 1031 else 1032 *parse_str = '\0'; 1033 1034 if (ext_type) 1035 push_string(&list, ext_type); 1036 cp = parse_str; 1037 while (1) { 1038 t = strchr(cp, ','); 1039 if (t) 1040 *t = '\0'; 1041 1042 if (*cp) 1043 push_string(&list, cp); 1044 if (t) 1045 cp = t+1; 1046 else { 1047 cp = ""; 1048 break; 1049 } 1050 } 1051 free(parse_str); 1052 if (profile_type) 1053 free(profile_type); 1054 return (list.list); 1055} 1056 1057static char *get_string_from_profile(char **fs_types, const char *opt, 1058 const char *def_val) 1059{ 1060 char *ret = 0; 1061 char **cpp; 1062 int i; 1063 1064 for (i=0; fs_types[i]; i++); 1065 for (i-=1; i >=0 ; i--) { 1066 profile_get_string(profile, "fs_types", fs_types[i], 1067 opt, 0, &ret); 1068 if (ret) 1069 return ret; 1070 } 1071 profile_get_string(profile, "defaults", opt, 0, def_val, &ret); 1072 return (ret); 1073} 1074 1075static int get_int_from_profile(char **fs_types, const char *opt, int def_val) 1076{ 1077 int ret; 1078 char **cpp; 1079 1080 profile_get_integer(profile, "defaults", opt, 0, def_val, &ret); 1081 for (cpp = fs_types; *cpp; cpp++) 1082 profile_get_integer(profile, "fs_types", *cpp, opt, ret, &ret); 1083 return ret; 1084} 1085 1086static int get_bool_from_profile(char **fs_types, const char *opt, int def_val) 1087{ 1088 int ret; 1089 char **cpp; 1090 1091 profile_get_boolean(profile, "defaults", opt, 0, def_val, &ret); 1092 for (cpp = fs_types; *cpp; cpp++) 1093 profile_get_boolean(profile, "fs_types", *cpp, opt, ret, &ret); 1094 return ret; 1095} 1096 1097extern const char *mke2fs_default_profile; 1098static const char *default_files[] = { "<default>", 0 }; 1099 1100static void PRS(int argc, char *argv[]) 1101{ 1102 int b, c; 1103 int size; 1104 char *tmp, *tmp2; 1105 int blocksize = 0; 1106 int inode_ratio = 0; 1107 int inode_size = 0; 1108 double reserved_ratio = 5.0; 1109 int sector_size = 0; 1110 int show_version_only = 0; 1111 unsigned long long num_inodes = 0; /* unsigned long long to catch too-large input */ 1112 errcode_t retval; 1113 char * oldpath = getenv("PATH"); 1114 char * extended_opts = 0; 1115 const char * fs_type = 0; 1116 const char * usage_types = 0; 1117 char **fs_types; 1118 blk_t dev_size; 1119#ifdef __linux__ 1120 struct utsname ut; 1121#endif 1122 long sysval; 1123 int s_opt = -1, r_opt = -1; 1124 char *fs_features = 0; 1125 int use_bsize; 1126 char *newpath; 1127 int pathlen = sizeof(PATH_SET) + 1; 1128 1129 if (oldpath) 1130 pathlen += strlen(oldpath); 1131 newpath = malloc(pathlen); 1132 strcpy(newpath, PATH_SET); 1133 1134 /* Update our PATH to include /sbin */ 1135 if (oldpath) { 1136 strcat (newpath, ":"); 1137 strcat (newpath, oldpath); 1138 } 1139 putenv (newpath); 1140 1141 tmp = getenv("MKE2FS_SYNC"); 1142 if (tmp) 1143 sync_kludge = atoi(tmp); 1144 1145 /* Determine the system page size if possible */ 1146#ifdef HAVE_SYSCONF 1147#if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE)) 1148#define _SC_PAGESIZE _SC_PAGE_SIZE 1149#endif 1150#ifdef _SC_PAGESIZE 1151 sysval = sysconf(_SC_PAGESIZE); 1152 if (sysval > 0) 1153 sys_page_size = sysval; 1154#endif /* _SC_PAGESIZE */ 1155#endif /* HAVE_SYSCONF */ 1156 1157 if ((tmp = getenv("MKE2FS_CONFIG")) != NULL) 1158 config_fn[0] = tmp; 1159 profile_set_syntax_err_cb(syntax_err_report); 1160 retval = profile_init(config_fn, &profile); 1161 if (retval == ENOENT) { 1162 profile_init(default_files, &profile); 1163 profile_set_default(profile, mke2fs_default_profile); 1164 } 1165 1166 setbuf(stdout, NULL); 1167 setbuf(stderr, NULL); 1168 add_error_table(&et_ext2_error_table); 1169 add_error_table(&et_prof_error_table); 1170 memset(&fs_param, 0, sizeof(struct ext2_super_block)); 1171 fs_param.s_rev_level = 1; /* Create revision 1 filesystems now */ 1172 1173#ifdef __linux__ 1174 if (uname(&ut)) { 1175 perror("uname"); 1176 exit(1); 1177 } 1178 linux_version_code = parse_version_number(ut.release); 1179 if (linux_version_code && linux_version_code < (2*65536 + 2*256)) 1180 fs_param.s_rev_level = 0; 1181#endif 1182 1183 if (argc && *argv) { 1184 program_name = get_progname(*argv); 1185 1186 /* If called as mkfs.ext3, create a journal inode */ 1187 if (!strcmp(program_name, "mkfs.ext3")) 1188 journal_size = -1; 1189 } 1190 1191 while ((c = getopt (argc, argv, 1192 "b:cf:g:i:jl:m:no:qr:s:t:vE:FI:J:L:M:N:O:R:ST:V")) != EOF) { 1193 switch (c) { 1194 case 'b': 1195 blocksize = strtol(optarg, &tmp, 0); 1196 b = (blocksize > 0) ? blocksize : -blocksize; 1197 if (b < EXT2_MIN_BLOCK_SIZE || 1198 b > EXT2_MAX_BLOCK_SIZE || *tmp) { 1199 com_err(program_name, 0, 1200 _("invalid block size - %s"), optarg); 1201 exit(1); 1202 } 1203 if (blocksize > 4096) 1204 fprintf(stderr, _("Warning: blocksize %d not " 1205 "usable on most systems.\n"), 1206 blocksize); 1207 if (blocksize > 0) 1208 fs_param.s_log_block_size = 1209 int_log2(blocksize >> 1210 EXT2_MIN_BLOCK_LOG_SIZE); 1211 break; 1212 case 'c': /* Check for bad blocks */ 1213 cflag++; 1214 break; 1215 case 'f': 1216 size = strtoul(optarg, &tmp, 0); 1217 if (size < EXT2_MIN_BLOCK_SIZE || 1218 size > EXT2_MAX_BLOCK_SIZE || *tmp) { 1219 com_err(program_name, 0, 1220 _("invalid fragment size - %s"), 1221 optarg); 1222 exit(1); 1223 } 1224 fs_param.s_log_frag_size = 1225 int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE); 1226 fprintf(stderr, _("Warning: fragments not supported. " 1227 "Ignoring -f option\n")); 1228 break; 1229 case 'g': 1230 fs_param.s_blocks_per_group = strtoul(optarg, &tmp, 0); 1231 if (*tmp) { 1232 com_err(program_name, 0, 1233 _("Illegal number for blocks per group")); 1234 exit(1); 1235 } 1236 if ((fs_param.s_blocks_per_group % 8) != 0) { 1237 com_err(program_name, 0, 1238 _("blocks per group must be multiple of 8")); 1239 exit(1); 1240 } 1241 break; 1242 case 'i': 1243 inode_ratio = strtoul(optarg, &tmp, 0); 1244 if (inode_ratio < EXT2_MIN_BLOCK_SIZE || 1245 inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024 || 1246 *tmp) { 1247 com_err(program_name, 0, 1248 _("invalid inode ratio %s (min %d/max %d)"), 1249 optarg, EXT2_MIN_BLOCK_SIZE, 1250 EXT2_MAX_BLOCK_SIZE); 1251 exit(1); 1252 } 1253 break; 1254 case 'J': 1255 parse_journal_opts(optarg); 1256 break; 1257 case 'j': 1258 if (!journal_size) 1259 journal_size = -1; 1260 break; 1261 case 'l': 1262 bad_blocks_filename = malloc(strlen(optarg)+1); 1263 if (!bad_blocks_filename) { 1264 com_err(program_name, ENOMEM, 1265 _("in malloc for bad_blocks_filename")); 1266 exit(1); 1267 } 1268 strcpy(bad_blocks_filename, optarg); 1269 break; 1270 case 'm': 1271 reserved_ratio = strtod(optarg, &tmp); 1272 if (reserved_ratio > 50 || *tmp) { 1273 com_err(program_name, 0, 1274 _("invalid reserved blocks percent - %s"), 1275 optarg); 1276 exit(1); 1277 } 1278 break; 1279 case 'n': 1280 noaction++; 1281 break; 1282 case 'o': 1283 creator_os = optarg; 1284 break; 1285 case 'q': 1286 quiet = 1; 1287 break; 1288 case 'r': 1289 r_opt = strtoul(optarg, &tmp, 0); 1290 if (*tmp) { 1291 com_err(program_name, 0, 1292 _("bad revision level - %s"), optarg); 1293 exit(1); 1294 } 1295 fs_param.s_rev_level = r_opt; 1296 break; 1297 case 's': /* deprecated */ 1298 s_opt = atoi(optarg); 1299 break; 1300 case 'I': 1301 inode_size = strtoul(optarg, &tmp, 0); 1302 if (*tmp) { 1303 com_err(program_name, 0, 1304 _("invalid inode size - %s"), optarg); 1305 exit(1); 1306 } 1307 break; 1308 case 'v': 1309 verbose = 1; 1310 break; 1311 case 'F': 1312 force++; 1313 break; 1314 case 'L': 1315 volume_label = optarg; 1316 break; 1317 case 'M': 1318 mount_dir = optarg; 1319 break; 1320 case 'N': 1321 num_inodes = strtoul(optarg, &tmp, 0); 1322 if (*tmp) { 1323 com_err(program_name, 0, 1324 _("bad num inodes - %s"), optarg); 1325 exit(1); 1326 } 1327 break; 1328 case 'O': 1329 fs_features = optarg; 1330 break; 1331 case 'E': 1332 case 'R': 1333 extended_opts = optarg; 1334 break; 1335 case 'S': 1336 super_only = 1; 1337 break; 1338 case 't': 1339 fs_type = optarg; 1340 break; 1341 case 'T': 1342 usage_types = optarg; 1343 break; 1344 case 'V': 1345 /* Print version number and exit */ 1346 show_version_only++; 1347 break; 1348 default: 1349 usage(); 1350 } 1351 } 1352 if ((optind == argc) && !show_version_only) 1353 usage(); 1354 device_name = argv[optind++]; 1355 1356 if (!quiet || show_version_only) 1357 fprintf (stderr, "mke2fs %s (%s)\n", E2FSPROGS_VERSION, 1358 E2FSPROGS_DATE); 1359 1360 if (show_version_only) { 1361 fprintf(stderr, _("\tUsing %s\n"), 1362 error_message(EXT2_ET_BASE)); 1363 exit(0); 1364 } 1365 1366 /* 1367 * If there's no blocksize specified and there is a journal 1368 * device, use it to figure out the blocksize 1369 */ 1370 if (blocksize <= 0 && journal_device) { 1371 ext2_filsys jfs; 1372 io_manager io_ptr; 1373 1374#ifdef CONFIG_TESTIO_DEBUG 1375 io_ptr = test_io_manager; 1376 test_io_backing_manager = unix_io_manager; 1377#else 1378 io_ptr = unix_io_manager; 1379#endif 1380 retval = ext2fs_open(journal_device, 1381 EXT2_FLAG_JOURNAL_DEV_OK, 0, 1382 0, io_ptr, &jfs); 1383 if (retval) { 1384 com_err(program_name, retval, 1385 _("while trying to open journal device %s\n"), 1386 journal_device); 1387 exit(1); 1388 } 1389 if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) { 1390 com_err(program_name, 0, 1391 _("Journal dev blocksize (%d) smaller than " 1392 "minimum blocksize %d\n"), jfs->blocksize, 1393 -blocksize); 1394 exit(1); 1395 } 1396 blocksize = jfs->blocksize; 1397 fs_param.s_log_block_size = 1398 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE); 1399 ext2fs_close(jfs); 1400 } 1401 1402 if (blocksize > sys_page_size) { 1403 if (!force) { 1404 com_err(program_name, 0, 1405 _("%d-byte blocks too big for system (max %d)"), 1406 blocksize, sys_page_size); 1407 proceed_question(); 1408 } 1409 fprintf(stderr, _("Warning: %d-byte blocks too big for system " 1410 "(max %d), forced to continue\n"), 1411 blocksize, sys_page_size); 1412 } 1413 if (optind < argc) { 1414 fs_param.s_blocks_count = parse_num_blocks(argv[optind++], 1415 fs_param.s_log_block_size); 1416 if (!fs_param.s_blocks_count) { 1417 com_err(program_name, 0, _("invalid blocks count - %s"), 1418 argv[optind - 1]); 1419 exit(1); 1420 } 1421 } 1422 if (optind < argc) 1423 usage(); 1424 1425 if (!force) 1426 check_plausibility(device_name); 1427 check_mount(device_name, force, _("filesystem")); 1428 1429 fs_param.s_log_frag_size = fs_param.s_log_block_size; 1430 1431 if (noaction && fs_param.s_blocks_count) { 1432 dev_size = fs_param.s_blocks_count; 1433 retval = 0; 1434 } else { 1435 retry: 1436 retval = ext2fs_get_device_size(device_name, 1437 EXT2_BLOCK_SIZE(&fs_param), 1438 &dev_size); 1439 if ((retval == EFBIG) && 1440 (blocksize == 0) && 1441 (fs_param.s_log_block_size == 0)) { 1442 fs_param.s_log_block_size = 2; 1443 blocksize = 4096; 1444 goto retry; 1445 } 1446 } 1447 1448 if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) { 1449 com_err(program_name, retval, 1450 _("while trying to determine filesystem size")); 1451 exit(1); 1452 } 1453 if (!fs_param.s_blocks_count) { 1454 if (retval == EXT2_ET_UNIMPLEMENTED) { 1455 com_err(program_name, 0, 1456 _("Couldn't determine device size; you " 1457 "must specify\nthe size of the " 1458 "filesystem\n")); 1459 exit(1); 1460 } else { 1461 if (dev_size == 0) { 1462 com_err(program_name, 0, 1463 _("Device size reported to be zero. " 1464 "Invalid partition specified, or\n\t" 1465 "partition table wasn't reread " 1466 "after running fdisk, due to\n\t" 1467 "a modified partition being busy " 1468 "and in use. You may need to reboot\n\t" 1469 "to re-read your partition table.\n" 1470 )); 1471 exit(1); 1472 } 1473 fs_param.s_blocks_count = dev_size; 1474 if (sys_page_size > EXT2_BLOCK_SIZE(&fs_param)) 1475 fs_param.s_blocks_count &= ~((sys_page_size / 1476 EXT2_BLOCK_SIZE(&fs_param))-1); 1477 } 1478 1479 } else if (!force && (fs_param.s_blocks_count > dev_size)) { 1480 com_err(program_name, 0, 1481 _("Filesystem larger than apparent device size.")); 1482 proceed_question(); 1483 } 1484 1485 fs_types = parse_fs_type(fs_type, usage_types, &fs_param, argv[0]); 1486 if (!fs_types) { 1487 fprintf(stderr, _("Failed to parse fs types list\n")); 1488 exit(1); 1489 } 1490 if (verbose) { 1491 fputs("Fs_types for mke2fs.conf resolution: ", stdout); 1492 print_str_list(fs_types); 1493 } 1494 1495 if (!fs_type) { 1496 int megs = (__u64)fs_param.s_blocks_count * 1497 (EXT2_BLOCK_SIZE(&fs_param) / 1024) / 1024; 1498 1499 if (fs_param.s_feature_incompat & 1500 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) 1501 fs_type = "journal"; 1502 else if (megs <= 3) 1503 fs_type = "floppy"; 1504 else if (megs <= 512) 1505 fs_type = "small"; 1506 else 1507 fs_type = "default"; 1508 } 1509 1510 /* Figure out what features should be enabled */ 1511 1512 tmp = NULL; 1513 if (fs_param.s_rev_level != EXT2_GOOD_OLD_REV) { 1514 char **cpp; 1515 1516 tmp = get_string_from_profile(fs_types, "base_features", 1517 "sparse_super,filetype,resize_inode,dir_index"); 1518 edit_feature(tmp, &fs_param.s_feature_compat); 1519 free(tmp); 1520 1521 for (cpp = fs_types; *cpp; cpp++) { 1522 tmp = NULL; 1523 profile_get_string(profile, "fs_types", *cpp, 1524 "features", "", &tmp); 1525 if (tmp && *tmp) 1526 edit_feature(tmp, &fs_param.s_feature_compat); 1527 if (tmp) 1528 free(tmp); 1529 } 1530 tmp = get_string_from_profile(fs_types, "default_features", 1531 ""); 1532 } 1533 edit_feature(fs_features ? fs_features : tmp, 1534 &fs_param.s_feature_compat); 1535 if (tmp) 1536 free(tmp); 1537 1538 if (r_opt == EXT2_GOOD_OLD_REV && 1539 (fs_param.s_feature_compat || fs_param.s_feature_incompat || 1540 fs_param.s_feature_incompat)) { 1541 fprintf(stderr, _("Filesystem features not supported " 1542 "with revision 0 filesystems\n")); 1543 exit(1); 1544 } 1545 1546 if (s_opt > 0) { 1547 if (r_opt == EXT2_GOOD_OLD_REV) { 1548 fprintf(stderr, _("Sparse superblocks not supported " 1549 "with revision 0 filesystems\n")); 1550 exit(1); 1551 } 1552 fs_param.s_feature_ro_compat |= 1553 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 1554 } else if (s_opt == 0) 1555 fs_param.s_feature_ro_compat &= 1556 ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 1557 1558 if (journal_size != 0) { 1559 if (r_opt == EXT2_GOOD_OLD_REV) { 1560 fprintf(stderr, _("Journals not supported " 1561 "with revision 0 filesystems\n")); 1562 exit(1); 1563 } 1564 fs_param.s_feature_compat |= 1565 EXT3_FEATURE_COMPAT_HAS_JOURNAL; 1566 } 1567 1568 if (fs_param.s_feature_incompat & 1569 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { 1570 reserved_ratio = 0; 1571 fs_param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV; 1572 fs_param.s_feature_compat = 0; 1573 fs_param.s_feature_ro_compat = 0; 1574 } 1575 1576 if ((fs_param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) && 1577 (fs_param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE)) { 1578 fprintf(stderr, _("The resize_inode and meta_bg features " 1579 "are not compatible.\n" 1580 "They can not be both enabled " 1581 "simultaneously.\n")); 1582 exit(1); 1583 } 1584 1585 /* Set first meta blockgroup via an environment variable */ 1586 /* (this is mostly for debugging purposes) */ 1587 if ((fs_param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) && 1588 ((tmp = getenv("MKE2FS_FIRST_META_BG")))) 1589 fs_param.s_first_meta_bg = atoi(tmp); 1590 1591 /* Get the hardware sector size, if available */ 1592 retval = ext2fs_get_device_sectsize(device_name, §or_size); 1593 if (retval) { 1594 com_err(program_name, retval, 1595 _("while trying to determine hardware sector size")); 1596 exit(1); 1597 } 1598 1599 if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL) 1600 sector_size = atoi(tmp); 1601 1602 if (blocksize <= 0) { 1603 use_bsize = get_int_from_profile(fs_types, "blocksize", 4096); 1604 1605 if (use_bsize == -1) { 1606 use_bsize = sys_page_size; 1607 if ((linux_version_code < (2*65536 + 6*256)) && 1608 (use_bsize > 4096)) 1609 use_bsize = 4096; 1610 } 1611 if (sector_size && use_bsize < sector_size) 1612 use_bsize = sector_size; 1613 if ((blocksize < 0) && (use_bsize < (-blocksize))) 1614 use_bsize = -blocksize; 1615 blocksize = use_bsize; 1616 fs_param.s_blocks_count /= blocksize / 1024; 1617 } 1618 1619 if (inode_ratio == 0) { 1620 inode_ratio = get_int_from_profile(fs_types, "inode_ratio", 1621 8192); 1622 if (inode_ratio < blocksize) 1623 inode_ratio = blocksize; 1624 } 1625 1626 fs_param.s_log_frag_size = fs_param.s_log_block_size = 1627 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE); 1628 1629 blocksize = EXT2_BLOCK_SIZE(&fs_param); 1630 1631 lazy_itable_init = get_bool_from_profile(fs_types, 1632 "lazy_itable_init", 0); 1633 1634 if (extended_opts) 1635 parse_extended_opts(&fs_param, extended_opts); 1636 1637 /* Since sparse_super is the default, we would only have a problem 1638 * here if it was explicitly disabled. 1639 */ 1640 if ((fs_param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) && 1641 !(fs_param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) { 1642 com_err(program_name, 0, 1643 _("reserved online resize blocks not supported " 1644 "on non-sparse filesystem")); 1645 exit(1); 1646 } 1647 1648 if (fs_param.s_blocks_per_group) { 1649 if (fs_param.s_blocks_per_group < 256 || 1650 fs_param.s_blocks_per_group > 8 * (unsigned) blocksize) { 1651 com_err(program_name, 0, 1652 _("blocks per group count out of range")); 1653 exit(1); 1654 } 1655 } 1656 1657 if (inode_size == 0) 1658 inode_size = get_int_from_profile(fs_types, "inode_size", 0); 1659 1660 if (inode_size && fs_param.s_rev_level >= EXT2_DYNAMIC_REV) { 1661 if (inode_size < EXT2_GOOD_OLD_INODE_SIZE || 1662 inode_size > EXT2_BLOCK_SIZE(&fs_param) || 1663 inode_size & (inode_size - 1)) { 1664 com_err(program_name, 0, 1665 _("invalid inode size %d (min %d/max %d)"), 1666 inode_size, EXT2_GOOD_OLD_INODE_SIZE, 1667 blocksize); 1668 exit(1); 1669 } 1670 fs_param.s_inode_size = inode_size; 1671 } 1672 1673 /* Make sure number of inodes specified will fit in 32 bits */ 1674 if (num_inodes == 0) { 1675 unsigned long long n; 1676 n = (unsigned long long) fs_param.s_blocks_count * blocksize / inode_ratio; 1677 if (n > ~0U) { 1678 com_err(program_name, 0, 1679 _("too many inodes (%llu), raise inode ratio?"), n); 1680 exit(1); 1681 } 1682 } else if (num_inodes > ~0U) { 1683 com_err(program_name, 0, 1684 _("too many inodes (%llu), specify < 2^32 inodes"), 1685 num_inodes); 1686 exit(1); 1687 } 1688 /* 1689 * Calculate number of inodes based on the inode ratio 1690 */ 1691 fs_param.s_inodes_count = num_inodes ? num_inodes : 1692 ((__u64) fs_param.s_blocks_count * blocksize) 1693 / inode_ratio; 1694 1695 if ((((long long)fs_param.s_inodes_count) * 1696 (inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE)) >= 1697 (((long long)fs_param.s_blocks_count) * 1698 EXT2_BLOCK_SIZE(&fs_param))) { 1699 com_err(program_name, 0, _("inode_size (%u) * inodes_count " 1700 "(%u) too big for a\n\t" 1701 "filesystem with %lu blocks, " 1702 "specify higher inode_ratio (-i)\n\t" 1703 "or lower inode count (-N).\n"), 1704 inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE, 1705 fs_param.s_inodes_count, 1706 (unsigned long) fs_param.s_blocks_count); 1707 exit(1); 1708 } 1709 1710 /* 1711 * Calculate number of blocks to reserve 1712 */ 1713 fs_param.s_r_blocks_count = e2p_percent(reserved_ratio, 1714 fs_param.s_blocks_count); 1715} 1716 1717int main (int argc, char *argv[]) 1718{ 1719 errcode_t retval = 0; 1720 ext2_filsys fs; 1721 badblocks_list bb_list = 0; 1722 unsigned int journal_blocks; 1723 unsigned int i; 1724 int val; 1725 io_manager io_ptr; 1726 1727#ifdef ENABLE_NLS 1728 setlocale(LC_MESSAGES, ""); 1729 setlocale(LC_CTYPE, ""); 1730 bindtextdomain(NLS_CAT_NAME, LOCALEDIR); 1731 textdomain(NLS_CAT_NAME); 1732#endif 1733 PRS(argc, argv); 1734 1735#ifdef CONFIG_TESTIO_DEBUG 1736 io_ptr = test_io_manager; 1737 test_io_backing_manager = unix_io_manager; 1738#else 1739 io_ptr = unix_io_manager; 1740#endif 1741 1742 /* 1743 * Initialize the superblock.... 1744 */ 1745 retval = ext2fs_initialize(device_name, EXT2_FLAG_EXCLUSIVE, &fs_param, 1746 io_ptr, &fs); 1747 if (retval) { 1748 com_err(device_name, retval, _("while setting up superblock")); 1749 exit(1); 1750 } 1751 1752 if (fs_param.s_flags & EXT2_FLAGS_TEST_FILESYS) 1753 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS; 1754 1755 /* 1756 * Wipe out the old on-disk superblock 1757 */ 1758 if (!noaction) 1759 zap_sector(fs, 2, 6); 1760 1761 /* 1762 * Generate a UUID for it... 1763 */ 1764 uuid_generate(fs->super->s_uuid); 1765 1766 /* 1767 * Initialize the directory index variables 1768 */ 1769 fs->super->s_def_hash_version = EXT2_HASH_TEA; 1770 uuid_generate((unsigned char *) fs->super->s_hash_seed); 1771 1772 /* 1773 * Add "jitter" to the superblock's check interval so that we 1774 * don't check all the filesystems at the same time. We use a 1775 * kludgy hack of using the UUID to derive a random jitter value. 1776 */ 1777 for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++) 1778 val += fs->super->s_uuid[i]; 1779 fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT; 1780 1781 /* 1782 * Override the creator OS, if applicable 1783 */ 1784 if (creator_os && !set_os(fs->super, creator_os)) { 1785 com_err (program_name, 0, _("unknown os - %s"), creator_os); 1786 exit(1); 1787 } 1788 1789 /* 1790 * For the Hurd, we will turn off filetype since it doesn't 1791 * support it. 1792 */ 1793 if (fs->super->s_creator_os == EXT2_OS_HURD) 1794 fs->super->s_feature_incompat &= 1795 ~EXT2_FEATURE_INCOMPAT_FILETYPE; 1796 1797 /* 1798 * Set the volume label... 1799 */ 1800 if (volume_label) { 1801 memset(fs->super->s_volume_name, 0, 1802 sizeof(fs->super->s_volume_name)); 1803 strncpy(fs->super->s_volume_name, volume_label, 1804 sizeof(fs->super->s_volume_name)); 1805 } 1806 1807 /* 1808 * Set the last mount directory 1809 */ 1810 if (mount_dir) { 1811 memset(fs->super->s_last_mounted, 0, 1812 sizeof(fs->super->s_last_mounted)); 1813 strncpy(fs->super->s_last_mounted, mount_dir, 1814 sizeof(fs->super->s_last_mounted)); 1815 } 1816 1817 if (!quiet || noaction) 1818 show_stats(fs); 1819 1820 if (noaction) 1821 exit(0); 1822 1823 if (fs->super->s_feature_incompat & 1824 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { 1825 create_journal_dev(fs); 1826 exit(ext2fs_close(fs) ? 1 : 0); 1827 } 1828 1829 if (bad_blocks_filename) 1830 read_bb_file(fs, &bb_list, bad_blocks_filename); 1831 if (cflag) 1832 test_disk(fs, &bb_list); 1833 1834 handle_bad_blocks(fs, bb_list); 1835 fs->stride = fs_stride = fs->super->s_raid_stride; 1836 retval = ext2fs_allocate_tables(fs); 1837 if (retval) { 1838 com_err(program_name, retval, 1839 _("while trying to allocate filesystem tables")); 1840 exit(1); 1841 } 1842 if (super_only) { 1843 fs->super->s_state |= EXT2_ERROR_FS; 1844 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY); 1845 } else { 1846 /* rsv must be a power of two (64kB is MD RAID sb alignment) */ 1847 unsigned int rsv = 65536 / fs->blocksize; 1848 unsigned long blocks = fs->super->s_blocks_count; 1849 unsigned long start; 1850 blk_t ret_blk; 1851 1852#ifdef ZAP_BOOTBLOCK 1853 zap_sector(fs, 0, 2); 1854#endif 1855 1856 /* 1857 * Wipe out any old MD RAID (or other) metadata at the end 1858 * of the device. This will also verify that the device is 1859 * as large as we think. Be careful with very small devices. 1860 */ 1861 start = (blocks & ~(rsv - 1)); 1862 if (start > rsv) 1863 start -= rsv; 1864 if (start > 0) 1865 retval = zero_blocks(fs, start, blocks - start, 1866 NULL, &ret_blk, NULL); 1867 1868 if (retval) { 1869 com_err(program_name, retval, 1870 _("while zeroing block %u at end of filesystem"), 1871 ret_blk); 1872 } 1873 write_inode_tables(fs, lazy_itable_init); 1874 create_root_dir(fs); 1875 create_lost_and_found(fs); 1876 reserve_inodes(fs); 1877 create_bad_block_inode(fs, bb_list); 1878 if (fs->super->s_feature_compat & 1879 EXT2_FEATURE_COMPAT_RESIZE_INODE) { 1880 retval = ext2fs_create_resize_inode(fs); 1881 if (retval) { 1882 com_err("ext2fs_create_resize_inode", retval, 1883 _("while reserving blocks for online resize")); 1884 exit(1); 1885 } 1886 } 1887 } 1888 1889 if (journal_device) { 1890 ext2_filsys jfs; 1891 1892 if (!force) 1893 check_plausibility(journal_device); 1894 check_mount(journal_device, force, _("journal")); 1895 1896 retval = ext2fs_open(journal_device, EXT2_FLAG_RW| 1897 EXT2_FLAG_JOURNAL_DEV_OK, 0, 1898 fs->blocksize, unix_io_manager, &jfs); 1899 if (retval) { 1900 com_err(program_name, retval, 1901 _("while trying to open journal device %s\n"), 1902 journal_device); 1903 exit(1); 1904 } 1905 if (!quiet) { 1906 printf(_("Adding journal to device %s: "), 1907 journal_device); 1908 fflush(stdout); 1909 } 1910 retval = ext2fs_add_journal_device(fs, jfs); 1911 if(retval) { 1912 com_err (program_name, retval, 1913 _("\n\twhile trying to add journal to device %s"), 1914 journal_device); 1915 exit(1); 1916 } 1917 if (!quiet) 1918 printf(_("done\n")); 1919 ext2fs_close(jfs); 1920 free(journal_device); 1921 } else if ((journal_size) || 1922 (fs_param.s_feature_compat & 1923 EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 1924 journal_blocks = figure_journal_size(journal_size, fs); 1925 1926 if (!journal_blocks) { 1927 fs->super->s_feature_compat &= 1928 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 1929 goto no_journal; 1930 } 1931 if (!quiet) { 1932 printf(_("Creating journal (%u blocks): "), 1933 journal_blocks); 1934 fflush(stdout); 1935 } 1936 retval = ext2fs_add_journal_inode(fs, journal_blocks, 1937 journal_flags); 1938 if (retval) { 1939 com_err (program_name, retval, 1940 _("\n\twhile trying to create journal")); 1941 exit(1); 1942 } 1943 if (!quiet) 1944 printf(_("done\n")); 1945 } 1946no_journal: 1947 1948 if (!quiet) 1949 printf(_("Writing superblocks and " 1950 "filesystem accounting information: ")); 1951 retval = ext2fs_flush(fs); 1952 if (retval) { 1953 fprintf(stderr, 1954 _("\nWarning, had trouble writing out superblocks.")); 1955 } 1956 if (!quiet) { 1957 printf(_("done\n\n")); 1958 if (!getenv("MKE2FS_SKIP_CHECK_MSG")) 1959 print_check_message(fs); 1960 } 1961 val = ext2fs_close(fs); 1962 remove_error_table(&et_ext2_error_table); 1963 remove_error_table(&et_prof_error_table); 1964 profile_release(profile); 1965 return (retval || val) ? 1 : 0; 1966} 1967