mke2fs.c revision 5e804b72b66c04eb597fc9f6a45226eb8e71eccd
1/* 2 * mke2fs.c - Make a ext2fs filesystem. 3 * 4 * Copyright (C) 1994, 1995, 1996, 1997 Theodore Ts'o. 5 * 6 * %Begin-Header% 7 * This file may be redistributed under the terms of the GNU Public 8 * License. 9 * %End-Header% 10 */ 11 12/* Usage: mke2fs [options] device 13 * 14 * The device may be a block device or a image of one, but this isn't 15 * enforced (but it's not much fun on a character device :-). 16 */ 17 18#include <stdio.h> 19#include <string.h> 20#include <fcntl.h> 21#include <ctype.h> 22#include <time.h> 23#ifdef __linux__ 24#include <sys/utsname.h> 25#endif 26#ifdef HAVE_GETOPT_H 27#include <getopt.h> 28#else 29extern char *optarg; 30extern int optind; 31#endif 32#ifdef HAVE_UNISTD_H 33#include <unistd.h> 34#endif 35#ifdef HAVE_STDLIB_H 36#include <stdlib.h> 37#endif 38#ifdef HAVE_ERRNO_H 39#include <errno.h> 40#endif 41#ifdef HAVE_MNTENT_H 42#include <mntent.h> 43#endif 44#include <sys/ioctl.h> 45#include <sys/types.h> 46 47#include "ext2fs/ext2_fs.h" 48#include "et/com_err.h" 49#include "uuid/uuid.h" 50#include "e2p/e2p.h" 51#include "ext2fs/ext2fs.h" 52#include "util.h" 53#include "../version.h" 54#include "nls-enable.h" 55 56#define STRIDE_LENGTH 8 57 58#ifndef __sparc__ 59#define ZAP_BOOTBLOCK 60#endif 61 62extern int isatty(int); 63extern FILE *fpopen(const char *cmd, const char *mode); 64 65const char * program_name = "mke2fs"; 66const char * device_name /* = NULL */; 67 68/* Command line options */ 69int cflag; 70int verbose; 71int quiet; 72int super_only; 73int force; 74int noaction; 75int journal_size; 76int journal_flags; 77char *bad_blocks_filename; 78__u32 fs_stride; 79 80struct ext2_super_block param; 81char *creator_os; 82char *volume_label; 83char *mount_dir; 84char *journal_device; 85int sync_kludge; /* Set using the MKE2FS_SYNC env. option */ 86 87int sys_page_size = 4096; 88 89static void usage(void) 90{ 91 fprintf(stderr, _("Usage: %s [-c|-t|-l filename] [-b block-size] " 92 "[-f fragment-size]\n\t[-i bytes-per-inode] [-j] [-J journal-options]" 93 " [-N number-of-inodes]\n\t[-m reserved-blocks-percentage] " 94 "[-o creator-os] [-g blocks-per-group]\n\t[-L volume-label] " 95 "[-M last-mounted-directory] [-O feature[,...]]\n\t" 96 "[-r fs-revision] [-R raid_opts] [-qvSV] device [blocks-count]\n"), 97 program_name); 98 exit(1); 99} 100 101static int int_log2(int arg) 102{ 103 int l = 0; 104 105 arg >>= 1; 106 while (arg) { 107 l++; 108 arg >>= 1; 109 } 110 return l; 111} 112 113static int int_log10(unsigned int arg) 114{ 115 int l; 116 117 for (l=0; arg ; l++) 118 arg = arg / 10; 119 return l; 120} 121 122/* 123 * This function sets the default parameters for a filesystem 124 * 125 * The type is specified by the user. The size is the maximum size 126 * (in megabytes) for which a set of parameters applies, with a size 127 * of zero meaning that it is the default parameter for the type. 128 * Note that order is important in the table below. 129 */ 130#define DEF_MAX_BLOCKSIZE -1 131static char default_str[] = "default"; 132struct mke2fs_defaults { 133 const char *type; 134 int size; 135 int blocksize; 136 int inode_ratio; 137} settings[] = { 138 { default_str, 0, 4096, 8192 }, 139 { default_str, 512, 1024, 4096 }, 140 { default_str, 3, 1024, 8192 }, 141 { "journal", 0, 4096, 8192 }, 142 { "news", 0, 4096, 4096 }, 143 { "largefile", 0, DEF_MAX_BLOCKSIZE, 1024 * 1024 }, 144 { "largefile4", 0, DEF_MAX_BLOCKSIZE, 4096 * 1024 }, 145 { 0, 0, 0, 0}, 146}; 147 148static void set_fs_defaults(const char *fs_type, 149 struct ext2_super_block *super, 150 int blocksize, int *inode_ratio) 151{ 152 int megs; 153 int ratio = 0; 154 struct mke2fs_defaults *p; 155 156 megs = super->s_blocks_count * (EXT2_BLOCK_SIZE(super) / 1024) / 1024; 157 if (inode_ratio) 158 ratio = *inode_ratio; 159 if (!fs_type) 160 fs_type = default_str; 161 for (p = settings; p->type; p++) { 162 if ((strcmp(p->type, fs_type) != 0) && 163 (strcmp(p->type, default_str) != 0)) 164 continue; 165 if ((p->size != 0) && 166 (megs > p->size)) 167 continue; 168 if (ratio == 0) 169 *inode_ratio = p->inode_ratio < blocksize ? 170 blocksize : p->inode_ratio; 171 if (blocksize == 0) { 172 if (p->blocksize == DEF_MAX_BLOCKSIZE) 173 p->blocksize = sys_page_size; 174 super->s_log_frag_size = super->s_log_block_size = 175 int_log2(p->blocksize >> EXT2_MIN_BLOCK_LOG_SIZE); 176 } 177 } 178 if (blocksize == 0) 179 super->s_blocks_count /= EXT2_BLOCK_SIZE(super) / 1024; 180} 181 182/* 183 * Helper function for read_bb_file and test_disk 184 */ 185static void invalid_block(ext2_filsys fs, blk_t blk) 186{ 187 fprintf(stderr, _("Bad block %u out of range; ignored.\n"), blk); 188 return; 189} 190 191/* 192 * Reads the bad blocks list from a file 193 */ 194static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list, 195 const char *bad_blocks_file) 196{ 197 FILE *f; 198 errcode_t retval; 199 200 f = fopen(bad_blocks_file, "r"); 201 if (!f) { 202 com_err("read_bad_blocks_file", errno, 203 _("while trying to open %s"), bad_blocks_file); 204 exit(1); 205 } 206 retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block); 207 fclose (f); 208 if (retval) { 209 com_err("ext2fs_read_bb_FILE", retval, 210 _("while reading in list of bad blocks from file")); 211 exit(1); 212 } 213} 214 215/* 216 * Runs the badblocks program to test the disk 217 */ 218static void test_disk(ext2_filsys fs, badblocks_list *bb_list) 219{ 220 FILE *f; 221 errcode_t retval; 222 char buf[1024]; 223 224 sprintf(buf, "badblocks -b %d %s%s%s %d", fs->blocksize, 225 quiet ? "" : "-s ", (cflag > 1) ? "-w " : "", 226 fs->device_name, fs->super->s_blocks_count); 227 if (verbose) 228 printf(_("Running command: %s\n"), buf); 229 f = popen(buf, "r"); 230 if (!f) { 231 com_err("popen", errno, 232 _("while trying run '%s'"), buf); 233 exit(1); 234 } 235 retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block); 236 pclose(f); 237 if (retval) { 238 com_err("ext2fs_read_bb_FILE", retval, 239 _("while processing list of bad blocks from program")); 240 exit(1); 241 } 242} 243 244static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list) 245{ 246 int i, j; 247 int must_be_good; 248 blk_t blk; 249 badblocks_iterate bb_iter; 250 errcode_t retval; 251 blk_t group_block; 252 int group; 253 int group_bad; 254 255 if (!bb_list) 256 return; 257 258 /* 259 * The primary superblock and group descriptors *must* be 260 * good; if not, abort. 261 */ 262 must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks; 263 for (i = fs->super->s_first_data_block; i <= must_be_good; i++) { 264 if (ext2fs_badblocks_list_test(bb_list, i)) { 265 fprintf(stderr, _("Block %d in primary " 266 "superblock/group descriptor area bad.\n"), i); 267 fprintf(stderr, _("Blocks %d through %d must be good " 268 "in order to build a filesystem.\n"), 269 fs->super->s_first_data_block, must_be_good); 270 fprintf(stderr, _("Aborting....\n")); 271 exit(1); 272 } 273 } 274 275 /* 276 * See if any of the bad blocks are showing up in the backup 277 * superblocks and/or group descriptors. If so, issue a 278 * warning and adjust the block counts appropriately. 279 */ 280 group_block = fs->super->s_first_data_block + 281 fs->super->s_blocks_per_group; 282 283 for (i = 1; i < fs->group_desc_count; i++) { 284 group_bad = 0; 285 for (j=0; j < fs->desc_blocks+1; j++) { 286 if (ext2fs_badblocks_list_test(bb_list, 287 group_block + j)) { 288 if (!group_bad) 289 fprintf(stderr, 290_("Warning: the backup superblock/group descriptors at block %d contain\n" 291" bad blocks.\n\n"), 292 group_block); 293 group_bad++; 294 group = ext2fs_group_of_blk(fs, group_block+j); 295 fs->group_desc[group].bg_free_blocks_count++; 296 fs->super->s_free_blocks_count++; 297 } 298 } 299 group_block += fs->super->s_blocks_per_group; 300 } 301 302 /* 303 * Mark all the bad blocks as used... 304 */ 305 retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter); 306 if (retval) { 307 com_err("ext2fs_badblocks_list_iterate_begin", retval, 308 _("while marking bad blocks as used")); 309 exit(1); 310 } 311 while (ext2fs_badblocks_list_iterate(bb_iter, &blk)) 312 ext2fs_mark_block_bitmap(fs->block_map, blk); 313 ext2fs_badblocks_list_iterate_end(bb_iter); 314} 315 316/* 317 * These functions implement a generalized progress meter. 318 */ 319struct progress_struct { 320 char format[20]; 321 char backup[80]; 322 __u32 max; 323}; 324 325static void progress_init(struct progress_struct *progress, 326 const char *label,__u32 max) 327{ 328 int i; 329 330 memset(progress, 0, sizeof(struct progress_struct)); 331 if (quiet) 332 return; 333 334 /* 335 * Figure out how many digits we need 336 */ 337 i = int_log10(max); 338 sprintf(progress->format, "%%%dd/%%%dld", i, i); 339 memset(progress->backup, '\b', sizeof(progress->backup)-1); 340 progress->backup[sizeof(progress->backup)-1] = 0; 341 if ((2*i)+1 < sizeof(progress->backup)) 342 progress->backup[(2*i)+1] = 0; 343 progress->max = max; 344 345 fputs(label, stdout); 346 fflush(stdout); 347} 348 349static void progress_update(struct progress_struct *progress, __u32 val) 350{ 351 if (progress->format[0] == 0) 352 return; 353 printf(progress->format, val, progress->max); 354 fputs(progress->backup, stdout); 355} 356 357static void progress_close(struct progress_struct *progress) 358{ 359 if (progress->format[0] == 0) 360 return; 361 fputs(_("done \n"), stdout); 362} 363 364 365/* 366 * Helper function which zeros out _num_ blocks starting at _blk_. In 367 * case of an error, the details of the error is returned via _ret_blk_ 368 * and _ret_count_ if they are non-NULL pointers. Returns 0 on 369 * success, and an error code on an error. 370 * 371 * As a special case, if the first argument is NULL, then it will 372 * attempt to free the static zeroizing buffer. (This is to keep 373 * programs that check for memory leaks happy.) 374 */ 375static errcode_t zero_blocks(ext2_filsys fs, blk_t blk, int num, 376 struct progress_struct *progress, 377 blk_t *ret_blk, int *ret_count) 378{ 379 int j, count, next_update, next_update_incr; 380 static char *buf; 381 errcode_t retval; 382 383 /* If fs is null, clean up the static buffer and return */ 384 if (!fs) { 385 if (buf) { 386 free(buf); 387 buf = 0; 388 } 389 return 0; 390 } 391 /* Allocate the zeroizing buffer if necessary */ 392 if (!buf) { 393 buf = malloc(fs->blocksize * STRIDE_LENGTH); 394 if (!buf) { 395 com_err("malloc", ENOMEM, 396 _("while allocating zeroizing buffer")); 397 exit(1); 398 } 399 memset(buf, 0, fs->blocksize * STRIDE_LENGTH); 400 } 401 /* OK, do the write loop */ 402 next_update = 0; 403 next_update_incr = num / 100; 404 if (next_update_incr < 1) 405 next_update_incr = 1; 406 for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) { 407 count = num - j; 408 if (count > STRIDE_LENGTH) 409 count = STRIDE_LENGTH; 410 retval = io_channel_write_blk(fs->io, blk, count, buf); 411 if (retval) { 412 if (ret_count) 413 *ret_count = count; 414 if (ret_blk) 415 *ret_blk = blk; 416 return retval; 417 } 418 if (progress && j > next_update) { 419 next_update += num / 100; 420 progress_update(progress, blk); 421 } 422 } 423 return 0; 424} 425 426static void write_inode_tables(ext2_filsys fs) 427{ 428 errcode_t retval; 429 blk_t blk; 430 int i, num; 431 struct progress_struct progress; 432 433 if (quiet) 434 memset(&progress, 0, sizeof(progress)); 435 else 436 progress_init(&progress, _("Writing inode tables: "), 437 fs->group_desc_count); 438 439 for (i = 0; i < fs->group_desc_count; i++) { 440 progress_update(&progress, i); 441 442 blk = fs->group_desc[i].bg_inode_table; 443 num = fs->inode_blocks_per_group; 444 445 retval = zero_blocks(fs, blk, num, 0, &blk, &num); 446 if (retval) { 447 fprintf(stderr, _("\nCould not write %d blocks " 448 "in inode table starting at %d: %s\n"), 449 num, blk, error_message(retval)); 450 exit(1); 451 } 452 if (sync_kludge) { 453 if (sync_kludge == 1) 454 sync(); 455 else if ((i % sync_kludge) == 0) 456 sync(); 457 } 458 } 459 zero_blocks(0, 0, 0, 0, 0, 0); 460 progress_close(&progress); 461} 462 463static void create_root_dir(ext2_filsys fs) 464{ 465 errcode_t retval; 466 struct ext2_inode inode; 467 468 retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0); 469 if (retval) { 470 com_err("ext2fs_mkdir", retval, _("while creating root dir")); 471 exit(1); 472 } 473 if (geteuid()) { 474 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode); 475 if (retval) { 476 com_err("ext2fs_read_inode", retval, 477 _("while reading root inode")); 478 exit(1); 479 } 480 inode.i_uid = getuid(); 481 if (inode.i_uid) 482 inode.i_gid = getgid(); 483 retval = ext2fs_write_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 errcode_t retval; 495 ext2_ino_t ino; 496 const char *name = "lost+found"; 497 int i; 498 int lpf_size = 0; 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 if ((lpf_size += fs->blocksize) >= 16*1024) 517 break; 518 retval = ext2fs_expand_dir(fs, ino); 519 if (retval) { 520 com_err("ext2fs_expand_dir", retval, 521 _("while expanding /lost+found")); 522 exit(1); 523 } 524 } 525} 526 527static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list) 528{ 529 errcode_t retval; 530 531 ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO); 532 fs->group_desc[0].bg_free_inodes_count--; 533 fs->super->s_free_inodes_count--; 534 retval = ext2fs_update_bb_inode(fs, bb_list); 535 if (retval) { 536 com_err("ext2fs_update_bb_inode", retval, 537 _("while setting bad block inode")); 538 exit(1); 539 } 540 541} 542 543static void reserve_inodes(ext2_filsys fs) 544{ 545 ext2_ino_t i; 546 int group; 547 548 for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) { 549 ext2fs_mark_inode_bitmap(fs->inode_map, i); 550 group = ext2fs_group_of_ino(fs, i); 551 fs->group_desc[group].bg_free_inodes_count--; 552 fs->super->s_free_inodes_count--; 553 } 554 ext2fs_mark_ib_dirty(fs); 555} 556 557#define BSD_DISKMAGIC (0x82564557UL) /* The disk magic number */ 558#define BSD_MAGICDISK (0x57455682UL) /* The disk magic number reversed */ 559#define BSD_LABEL_OFFSET 64 560 561static void zap_sector(ext2_filsys fs, int sect, int nsect) 562{ 563 char *buf; 564 int retval; 565 unsigned int *magic; 566 567 buf = malloc(512*nsect); 568 if (!buf) { 569 printf(_("Out of memory erasing sectors %d-%d\n"), 570 sect, sect + nsect - 1); 571 exit(1); 572 } 573 574 if (sect == 0) { 575 /* Check for a BSD disklabel, and don't erase it if so */ 576 retval = io_channel_read_blk(fs->io, 0, -512, buf); 577 if (retval) 578 fprintf(stderr, 579 _("Warning: could not read block 0: %s\n"), 580 error_message(retval)); 581 else { 582 magic = (unsigned int *) (buf + BSD_LABEL_OFFSET); 583 if ((*magic == BSD_DISKMAGIC) || 584 (*magic == BSD_MAGICDISK)) 585 return; 586 } 587 } 588 589 memset(buf, 0, 512*nsect); 590 io_channel_set_blksize(fs->io, 512); 591 retval = io_channel_write_blk(fs->io, sect, -512*nsect, buf); 592 io_channel_set_blksize(fs->io, fs->blocksize); 593 free(buf); 594 if (retval) 595 fprintf(stderr, _("Warning: could not erase sector %d: %s\n"), 596 sect, error_message(retval)); 597} 598 599static void create_journal_dev(ext2_filsys fs) 600{ 601 struct progress_struct progress; 602 errcode_t retval; 603 char *buf; 604 blk_t blk; 605 int count; 606 607 retval = ext2fs_create_journal_superblock(fs, 608 fs->super->s_blocks_count, 0, &buf); 609 if (retval) { 610 com_err("create_journal_dev", retval, 611 _("while initializing journal superblock")); 612 exit(1); 613 } 614 if (quiet) 615 memset(&progress, 0, sizeof(progress)); 616 else 617 progress_init(&progress, _("Zeroing journal device: "), 618 fs->super->s_blocks_count); 619 620 retval = zero_blocks(fs, 0, fs->super->s_blocks_count, 621 &progress, &blk, &count); 622 if (retval) { 623 com_err("create_journal_dev", retval, 624 _("while zeroing journal device (block %u, count %d)"), 625 blk, count); 626 exit(1); 627 } 628 zero_blocks(0, 0, 0, 0, 0, 0); 629 630 retval = io_channel_write_blk(fs->io, 631 fs->super->s_first_data_block+1, 632 1, buf); 633 if (retval) { 634 com_err("create_journal_dev", retval, 635 _("while writing journal superblock")); 636 exit(1); 637 } 638 progress_close(&progress); 639} 640 641static void show_stats(ext2_filsys fs) 642{ 643 struct ext2_super_block *s = fs->super; 644 char buf[80]; 645 blk_t group_block; 646 int i, need, col_left; 647 648 if (param.s_blocks_count != s->s_blocks_count) 649 fprintf(stderr, _("warning: %d blocks unused.\n\n"), 650 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 printf(_("OS type: ")); 656 switch (fs->super->s_creator_os) { 657 case EXT2_OS_LINUX: printf ("Linux"); break; 658 case EXT2_OS_HURD: printf ("GNU/Hurd"); break; 659 case EXT2_OS_MASIX: printf ("Masix"); break; 660 default: printf (_("(unknown os)")); 661 } 662 printf("\n"); 663 printf(_("Block size=%u (log=%u)\n"), fs->blocksize, 664 s->s_log_block_size); 665 printf(_("Fragment size=%u (log=%u)\n"), fs->fragsize, 666 s->s_log_frag_size); 667 printf(_("%u inodes, %u blocks\n"), s->s_inodes_count, 668 s->s_blocks_count); 669 printf(_("%u blocks (%2.2f%%) reserved for the super user\n"), 670 s->s_r_blocks_count, 671 100.0 * s->s_r_blocks_count / s->s_blocks_count); 672 printf(_("First data block=%u\n"), s->s_first_data_block); 673 if (fs->group_desc_count > 1) 674 printf(_("%u block groups\n"), fs->group_desc_count); 675 else 676 printf(_("%u block group\n"), fs->group_desc_count); 677 printf(_("%u blocks per group, %u fragments per group\n"), 678 s->s_blocks_per_group, s->s_frags_per_group); 679 printf(_("%u inodes per group\n"), s->s_inodes_per_group); 680 681 if (fs->group_desc_count == 1) { 682 printf("\n"); 683 return; 684 } 685 686 printf(_("Superblock backups stored on blocks: ")); 687 group_block = s->s_first_data_block; 688 col_left = 0; 689 for (i = 1; i < fs->group_desc_count; i++) { 690 group_block += s->s_blocks_per_group; 691 if (!ext2fs_bg_has_super(fs, i)) 692 continue; 693 if (i != 1) 694 printf(", "); 695 need = int_log10(group_block) + 2; 696 if (need > col_left) { 697 printf("\n\t"); 698 col_left = 72; 699 } 700 col_left -= need; 701 printf("%u", group_block); 702 } 703 printf("\n\n"); 704} 705 706/* 707 * Set the S_CREATOR_OS field. Return true if OS is known, 708 * otherwise, 0. 709 */ 710static int set_os(struct ext2_super_block *sb, char *os) 711{ 712 if (isdigit (*os)) 713 sb->s_creator_os = atoi (os); 714 else if (strcasecmp(os, "linux") == 0) 715 sb->s_creator_os = EXT2_OS_LINUX; 716 else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0) 717 sb->s_creator_os = EXT2_OS_HURD; 718 else if (strcasecmp(os, "masix") == 0) 719 sb->s_creator_os = EXT2_OS_MASIX; 720 else 721 return 0; 722 return 1; 723} 724 725#define PATH_SET "PATH=/sbin" 726 727static void parse_raid_opts(const char *opts) 728{ 729 char *buf, *token, *next, *p, *arg; 730 int len; 731 int raid_usage = 0; 732 733 len = strlen(opts); 734 buf = malloc(len+1); 735 if (!buf) { 736 fprintf(stderr, _("Couldn't allocate memory to parse " 737 "raid options!\n")); 738 exit(1); 739 } 740 strcpy(buf, opts); 741 for (token = buf; token && *token; token = next) { 742 p = strchr(token, ','); 743 next = 0; 744 if (p) { 745 *p = 0; 746 next = p+1; 747 } 748 arg = strchr(token, '='); 749 if (arg) { 750 *arg = 0; 751 arg++; 752 } 753 if (strcmp(token, "stride") == 0) { 754 if (!arg) { 755 raid_usage++; 756 continue; 757 } 758 fs_stride = strtoul(arg, &p, 0); 759 if (*p || (fs_stride == 0)) { 760 fprintf(stderr, 761 _("Invalid stride parameter.\n")); 762 raid_usage++; 763 continue; 764 } 765 } else 766 raid_usage++; 767 } 768 if (raid_usage) { 769 fprintf(stderr, _("\nBad raid options specified.\n\n" 770 "Raid options are separated by commas, " 771 "and may take an argument which\n" 772 "\tis set off by an equals ('=') sign.\n\n" 773 "Valid raid options are:\n" 774 "\tstride=<stride length in blocks>\n\n")); 775 exit(1); 776 } 777} 778 779static __u32 ok_features[3] = { 780 EXT3_FEATURE_COMPAT_HAS_JOURNAL | 781 EXT2_FEATURE_COMPAT_DIR_INDEX, /* Compat */ 782 EXT2_FEATURE_INCOMPAT_FILETYPE| /* Incompat */ 783 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV| 784 EXT2_FEATURE_INCOMPAT_META_BG, 785 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER /* R/O compat */ 786}; 787 788 789static void PRS(int argc, char *argv[]) 790{ 791 int c; 792 int size; 793 char * tmp; 794 int blocksize = 0; 795 int inode_ratio = 0; 796 int inode_size = 0; 797 int reserved_ratio = 5; 798 ext2_ino_t num_inodes = 0; 799 errcode_t retval; 800 char * oldpath = getenv("PATH"); 801 char * raid_opts = 0; 802 const char * fs_type = 0; 803 int default_features = 1; 804 blk_t dev_size; 805#ifdef __linux__ 806 struct utsname ut; 807#endif 808 long sysval; 809 810 /* Update our PATH to include /sbin */ 811 if (oldpath) { 812 char *newpath; 813 814 newpath = malloc(sizeof (PATH_SET) + 1 + strlen (oldpath)); 815 strcpy (newpath, PATH_SET); 816 strcat (newpath, ":"); 817 strcat (newpath, oldpath); 818 putenv (newpath); 819 } else 820 putenv (PATH_SET); 821 822 tmp = getenv("MKE2FS_SYNC"); 823 if (tmp) 824 sync_kludge = atoi(tmp); 825 826 /* Determine the system page size if possible */ 827#ifdef HAVE_SYSCONF 828#if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE)) 829#define _SC_PAGESIZE _SC_PAGE_SIZE 830#endif 831#ifdef _SC_PAGESIZE 832 sysval = sysconf(_SC_PAGESIZE); 833 if (sysval > 0) 834 sys_page_size = sysval; 835#endif /* _SC_PAGESIZE */ 836#endif /* HAVE_SYSCONF */ 837 838 setbuf(stdout, NULL); 839 setbuf(stderr, NULL); 840 initialize_ext2_error_table(); 841 memset(¶m, 0, sizeof(struct ext2_super_block)); 842 param.s_rev_level = 1; /* Create revision 1 filesystems now */ 843 param.s_feature_incompat |= EXT2_FEATURE_INCOMPAT_FILETYPE; 844 param.s_feature_ro_compat |= EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 845#if 0 846 param.s_feature_compat |= EXT2_FEATURE_COMPAT_DIR_INDEX; 847#endif 848 849#ifdef __linux__ 850 if (uname(&ut)) { 851 perror("uname"); 852 exit(1); 853 } 854 if ((ut.release[0] == '1') || 855 (ut.release[0] == '2' && ut.release[1] == '.' && 856 ut.release[2] < '2' && ut.release[3] == '.')) { 857 param.s_rev_level = 0; 858 param.s_feature_incompat = 0; 859 param.s_feature_compat = 0; 860 param.s_feature_ro_compat = 0; 861 } 862#endif 863 fprintf (stderr, "mke2fs %s (%s)\n", 864 E2FSPROGS_VERSION, E2FSPROGS_DATE); 865 866 if (argc && *argv) { 867 program_name = get_progname(*argv); 868 869 /* If called as mkfs.ext3, create a journal inode */ 870 if (!strcmp(program_name, "mkfs.ext3")) 871 journal_size = -1; 872 } 873 874 while ((c = getopt (argc, argv, 875 "b:cf:g:i:jl:m:no:qr:R:s:tvI:J:ST:FL:M:N:O:V")) != EOF) 876 switch (c) { 877 case 'b': 878 blocksize = strtoul(optarg, &tmp, 0); 879 if (blocksize < EXT2_MIN_BLOCK_SIZE || 880 blocksize > EXT2_MAX_BLOCK_SIZE || *tmp) { 881 com_err(program_name, 0, 882 _("bad block size - %s"), optarg); 883 exit(1); 884 } 885 if (blocksize > 4096) 886 fprintf(stderr, _("Warning: blocksize %d not " 887 "usable on most systems.\n"), 888 blocksize); 889 param.s_log_block_size = 890 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE); 891 break; 892 case 'c': /* Check for bad blocks */ 893 case 't': /* deprecated */ 894 cflag++; 895 break; 896 case 'f': 897 size = strtoul(optarg, &tmp, 0); 898 if (size < EXT2_MIN_BLOCK_SIZE || 899 size > EXT2_MAX_BLOCK_SIZE || *tmp) { 900 com_err(program_name, 0, 901 _("bad fragment size - %s"), 902 optarg); 903 exit(1); 904 } 905 param.s_log_frag_size = 906 int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE); 907 fprintf(stderr, _("Warning: fragments not supported. " 908 "Ignoring -f option\n")); 909 break; 910 case 'g': 911 param.s_blocks_per_group = strtoul(optarg, &tmp, 0); 912 if (*tmp) { 913 com_err(program_name, 0, 914 _("Illegal number for blocks per group")); 915 exit(1); 916 } 917 if ((param.s_blocks_per_group % 8) != 0) { 918 com_err(program_name, 0, 919 _("blocks per group must be multiple of 8")); 920 exit(1); 921 } 922 break; 923 case 'i': 924 inode_ratio = strtoul(optarg, &tmp, 0); 925 if (inode_ratio < EXT2_MIN_BLOCK_SIZE || 926 inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024 || 927 *tmp) { 928 com_err(program_name, 0, 929 _("bad inode ratio %s (min %d/max %d"), 930 optarg, EXT2_MIN_BLOCK_SIZE, 931 EXT2_MAX_BLOCK_SIZE); 932 exit(1); 933 } 934 break; 935 case 'J': 936 parse_journal_opts(optarg); 937 break; 938 case 'j': 939 param.s_feature_compat |= 940 EXT3_FEATURE_COMPAT_HAS_JOURNAL; 941 if (!journal_size) 942 journal_size = -1; 943 break; 944 case 'l': 945 bad_blocks_filename = malloc(strlen(optarg)+1); 946 if (!bad_blocks_filename) { 947 com_err(program_name, ENOMEM, 948 _("in malloc for bad_blocks_filename")); 949 exit(1); 950 } 951 strcpy(bad_blocks_filename, optarg); 952 break; 953 case 'm': 954 reserved_ratio = strtoul(optarg, &tmp, 0); 955 if (reserved_ratio > 50 || *tmp) { 956 com_err(program_name, 0, 957 _("bad reserved blocks percent - %s"), 958 optarg); 959 exit(1); 960 } 961 break; 962 case 'n': 963 noaction++; 964 break; 965 case 'o': 966 creator_os = optarg; 967 break; 968 case 'r': 969 param.s_rev_level = atoi(optarg); 970 if (param.s_rev_level == EXT2_GOOD_OLD_REV) { 971 param.s_feature_incompat = 0; 972 param.s_feature_compat = 0; 973 param.s_feature_ro_compat = 0; 974 } 975 break; 976 case 's': /* deprecated */ 977 if (atoi(optarg)) 978 param.s_feature_ro_compat |= 979 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 980 else 981 param.s_feature_ro_compat &= 982 ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 983 break; 984#ifdef EXT2_DYNAMIC_REV 985 case 'I': 986 inode_size = strtoul(optarg, &tmp, 0); 987 if (*tmp) { 988 com_err(program_name, 0, 989 _("bad inode size - %s"), optarg); 990 exit(1); 991 } 992 break; 993#endif 994 case 'N': 995 num_inodes = atoi(optarg); 996 break; 997 case 'v': 998 verbose = 1; 999 break; 1000 case 'q': 1001 quiet = 1; 1002 break; 1003 case 'F': 1004 force = 1; 1005 break; 1006 case 'L': 1007 volume_label = optarg; 1008 break; 1009 case 'M': 1010 mount_dir = optarg; 1011 break; 1012 case 'O': 1013 if (!strcmp(optarg, "none") || default_features) { 1014 param.s_feature_compat = 0; 1015 param.s_feature_incompat = 0; 1016 param.s_feature_ro_compat = 0; 1017 default_features = 0; 1018 } 1019 if (!strcmp(optarg, "none")) 1020 break; 1021 if (e2p_edit_feature(optarg, 1022 ¶m.s_feature_compat, 1023 ok_features)) { 1024 fprintf(stderr, 1025 _("Invalid filesystem option set: %s\n"), optarg); 1026 exit(1); 1027 } 1028 break; 1029 case 'R': 1030 raid_opts = optarg; 1031 break; 1032 case 'S': 1033 super_only = 1; 1034 break; 1035 case 'T': 1036 fs_type = optarg; 1037 break; 1038 case 'V': 1039 /* Print version number and exit */ 1040 fprintf(stderr, _("\tUsing %s\n"), 1041 error_message(EXT2_ET_BASE)); 1042 exit(0); 1043 default: 1044 usage(); 1045 } 1046 if (optind == argc) 1047 usage(); 1048 device_name = argv[optind]; 1049 optind++; 1050 if (optind < argc) { 1051 unsigned long tmp2 = strtoul(argv[optind++], &tmp, 0); 1052 1053 if ((*tmp) || (tmp2 > 0xfffffffful)) { 1054 com_err(program_name, 0, _("bad blocks count - %s"), 1055 argv[optind - 1]); 1056 exit(1); 1057 } 1058 param.s_blocks_count = tmp2; 1059 } 1060 if (optind < argc) 1061 usage(); 1062 1063 if (raid_opts) 1064 parse_raid_opts(raid_opts); 1065 1066 /* 1067 * If there's no blocksize specified and there is a journal 1068 * device, use it to figure out the blocksize 1069 */ 1070 if (blocksize == 0 && journal_device) { 1071 ext2_filsys jfs; 1072 1073 retval = ext2fs_open(journal_device, 1074 EXT2_FLAG_JOURNAL_DEV_OK, 0, 1075 0, unix_io_manager, &jfs); 1076 if (retval) { 1077 com_err(program_name, retval, 1078 _("while trying to open journal device %s\n"), 1079 journal_device); 1080 exit(1); 1081 } 1082 blocksize = jfs->blocksize; 1083 param.s_log_block_size = 1084 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE); 1085 ext2fs_close(jfs); 1086 } 1087 1088 if (blocksize > sys_page_size) { 1089 if (!force) { 1090 com_err(program_name, 0, 1091 _("%d-byte blocks too big for system (max %d)"), 1092 blocksize, sys_page_size); 1093 proceed_question(); 1094 } 1095 fprintf(stderr, _("Warning: %d-byte blocks too big for system " 1096 "(max %d), forced to continue\n"), 1097 blocksize, sys_page_size); 1098 } 1099 1100 if (param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { 1101 if (!fs_type) 1102 fs_type = "journal"; 1103 reserved_ratio = 0; 1104 param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV; 1105 param.s_feature_compat = 0; 1106 param.s_feature_ro_compat = 0; 1107 } 1108 if (param.s_rev_level == EXT2_GOOD_OLD_REV && 1109 (param.s_feature_compat || param.s_feature_ro_compat || 1110 param.s_feature_incompat)) 1111 param.s_rev_level = 1; /* Create a revision 1 filesystem */ 1112 1113 if (!force) 1114 check_plausibility(device_name); 1115 check_mount(device_name, force, _("filesystem")); 1116 1117 param.s_log_frag_size = param.s_log_block_size; 1118 1119 if (noaction && param.s_blocks_count) { 1120 dev_size = param.s_blocks_count; 1121 retval = 0; 1122 } else 1123 retval = ext2fs_get_device_size(device_name, 1124 EXT2_BLOCK_SIZE(¶m), 1125 &dev_size); 1126 if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) { 1127 com_err(program_name, retval, 1128 _("while trying to determine filesystem size")); 1129 exit(1); 1130 } 1131 if (!param.s_blocks_count) { 1132 if (retval == EXT2_ET_UNIMPLEMENTED) { 1133 com_err(program_name, 0, 1134 _("Couldn't determine device size; you " 1135 "must specify\nthe size of the " 1136 "filesystem\n")); 1137 exit(1); 1138 } else { 1139 if (dev_size == 0) { 1140 com_err(program_name, 0, 1141 _("Device size reported to be zero. " 1142 "Invalid partition specified, or\n\t" 1143 "partition table wasn't reread " 1144 "after running fdisk, due to\n\t" 1145 "a modified partition being busy " 1146 "and in use. You may need to reboot\n\t" 1147 "to re-read your partition table.\n" 1148 )); 1149 exit(1); 1150 } 1151 param.s_blocks_count = dev_size; 1152 } 1153 1154 } else if (!force && (param.s_blocks_count > dev_size)) { 1155 com_err(program_name, 0, 1156 _("Filesystem larger than apparent filesystem size.")); 1157 proceed_question(); 1158 } 1159 1160 /* 1161 * If the user asked for HAS_JOURNAL, then make sure a journal 1162 * gets created. 1163 */ 1164 if ((param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) && 1165 !journal_size) 1166 journal_size = -1; 1167 1168 /* Set first meta blockgroup via an environment variable */ 1169 /* (this is mostly for debugging purposes) */ 1170 if ((param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) && 1171 ((tmp = getenv("MKE2FS_FIRST_META_BG")))) 1172 param.s_first_meta_bg = atoi(tmp); 1173 1174 set_fs_defaults(fs_type, ¶m, blocksize, &inode_ratio); 1175 1176 if (param.s_blocks_per_group) { 1177 if (param.s_blocks_per_group < 256 || 1178 param.s_blocks_per_group > 8 * EXT2_BLOCK_SIZE(¶m)) { 1179 com_err(program_name, 0, 1180 _("blocks per group count out of range")); 1181 exit(1); 1182 } 1183 } 1184 1185 if (inode_size) { 1186 if (inode_size < EXT2_GOOD_OLD_INODE_SIZE || 1187 inode_size > EXT2_BLOCK_SIZE(¶m) || 1188 inode_size & (inode_size - 1)) { 1189 com_err(program_name, 0, 1190 _("bad inode size %d (min %d/max %d)"), 1191 inode_size, EXT2_GOOD_OLD_INODE_SIZE, 1192 EXT2_BLOCK_SIZE(¶m)); 1193 exit(1); 1194 } 1195 if (inode_size != EXT2_GOOD_OLD_INODE_SIZE) 1196 fprintf(stderr, _("Warning: %d-byte inodes not usable " 1197 "on most systems\n"), 1198 inode_size); 1199 param.s_inode_size = inode_size; 1200 } 1201 1202 /* 1203 * Calculate number of inodes based on the inode ratio 1204 */ 1205 param.s_inodes_count = num_inodes ? num_inodes : 1206 ((__u64) param.s_blocks_count * EXT2_BLOCK_SIZE(¶m)) 1207 / inode_ratio; 1208 1209 /* 1210 * Calculate number of blocks to reserve 1211 */ 1212 param.s_r_blocks_count = (param.s_blocks_count * reserved_ratio) / 100; 1213 1214} 1215 1216int main (int argc, char *argv[]) 1217{ 1218 errcode_t retval = 0; 1219 ext2_filsys fs; 1220 badblocks_list bb_list = 0; 1221 int journal_blocks; 1222 int i, val; 1223 1224#ifdef ENABLE_NLS 1225 setlocale(LC_MESSAGES, ""); 1226 setlocale(LC_CTYPE, ""); 1227 bindtextdomain(NLS_CAT_NAME, LOCALEDIR); 1228 textdomain(NLS_CAT_NAME); 1229#endif 1230 PRS(argc, argv); 1231 1232 /* 1233 * Initialize the superblock.... 1234 */ 1235 retval = ext2fs_initialize(device_name, 0, ¶m, 1236 unix_io_manager, &fs); 1237 if (retval) { 1238 com_err(device_name, retval, _("while setting up superblock")); 1239 exit(1); 1240 } 1241 1242 /* 1243 * Wipe out the old on-disk superblock 1244 */ 1245 if (!noaction) 1246 zap_sector(fs, 2, 6); 1247 1248 /* 1249 * Generate a UUID for it... 1250 */ 1251 uuid_generate(fs->super->s_uuid); 1252 1253 /* 1254 * Initialize the directory index variables 1255 */ 1256 fs->super->s_def_hash_version = EXT2_HASH_TEA; 1257 uuid_generate((unsigned char *) fs->super->s_hash_seed); 1258 1259 /* 1260 * Add "jitter" to the superblock's check interval so that we 1261 * don't check all the filesystems at the same time. We use a 1262 * kludgy hack of using the UUID to derive a random jitter value. 1263 */ 1264 for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++) 1265 val += fs->super->s_uuid[i]; 1266 fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT; 1267 1268 /* 1269 * Override the creator OS, if applicable 1270 */ 1271 if (creator_os && !set_os(fs->super, creator_os)) { 1272 com_err (program_name, 0, _("unknown os - %s"), creator_os); 1273 exit(1); 1274 } 1275 1276 /* 1277 * For the Hurd, we will turn off filetype since it doesn't 1278 * support it. 1279 */ 1280 if (fs->super->s_creator_os == EXT2_OS_HURD) 1281 fs->super->s_feature_incompat &= 1282 ~EXT2_FEATURE_INCOMPAT_FILETYPE; 1283 1284 /* 1285 * Set the volume label... 1286 */ 1287 if (volume_label) { 1288 memset(fs->super->s_volume_name, 0, 1289 sizeof(fs->super->s_volume_name)); 1290 strncpy(fs->super->s_volume_name, volume_label, 1291 sizeof(fs->super->s_volume_name)); 1292 } 1293 1294 /* 1295 * Set the last mount directory 1296 */ 1297 if (mount_dir) { 1298 memset(fs->super->s_last_mounted, 0, 1299 sizeof(fs->super->s_last_mounted)); 1300 strncpy(fs->super->s_last_mounted, mount_dir, 1301 sizeof(fs->super->s_last_mounted)); 1302 } 1303 1304 if (!quiet || noaction) 1305 show_stats(fs); 1306 1307 if (noaction) 1308 exit(0); 1309 1310 if (fs->super->s_feature_incompat & 1311 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { 1312 create_journal_dev(fs); 1313 exit(ext2fs_close(fs) ? 1 : 0); 1314 } 1315 1316 if (bad_blocks_filename) 1317 read_bb_file(fs, &bb_list, bad_blocks_filename); 1318 if (cflag) 1319 test_disk(fs, &bb_list); 1320 1321 handle_bad_blocks(fs, bb_list); 1322 fs->stride = fs_stride; 1323 retval = ext2fs_allocate_tables(fs); 1324 if (retval) { 1325 com_err(program_name, retval, 1326 _("while trying to allocate filesystem tables")); 1327 exit(1); 1328 } 1329 if (super_only) { 1330 fs->super->s_state |= EXT2_ERROR_FS; 1331 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY); 1332 } else { 1333 /* rsv must be a power of two (64kB is MD RAID sb alignment) */ 1334 int rsv = 65536 / fs->blocksize; 1335 unsigned long blocks = fs->super->s_blocks_count; 1336 unsigned long start; 1337 blk_t ret_blk; 1338 1339#ifdef ZAP_BOOTBLOCK 1340 zap_sector(fs, 0, 2); 1341#endif 1342 1343 /* 1344 * Wipe out any old MD RAID (or other) metadata at the end 1345 * of the device. This will also verify that the device is 1346 * as large as we think. Be careful with very small devices. 1347 */ 1348 start = (blocks & ~(rsv - 1)); 1349 if (start > rsv) 1350 start -= rsv; 1351 if (start > 0) 1352 retval = zero_blocks(fs, start, blocks - start, 1353 NULL, &ret_blk, NULL); 1354 1355 if (retval) { 1356 com_err(program_name, retval, 1357 _("while zeroing block %u at end of filesystem"), 1358 ret_blk); 1359 } 1360 write_inode_tables(fs); 1361 create_root_dir(fs); 1362 create_lost_and_found(fs); 1363 reserve_inodes(fs); 1364 create_bad_block_inode(fs, bb_list); 1365 } 1366 1367 if (journal_device) { 1368 ext2_filsys jfs; 1369 1370 if (!force) 1371 check_plausibility(journal_device); 1372 check_mount(journal_device, force, _("journal")); 1373 1374 retval = ext2fs_open(journal_device, EXT2_FLAG_RW| 1375 EXT2_FLAG_JOURNAL_DEV_OK, 0, 1376 fs->blocksize, unix_io_manager, &jfs); 1377 if (retval) { 1378 com_err(program_name, retval, 1379 _("while trying to open journal device %s\n"), 1380 journal_device); 1381 exit(1); 1382 } 1383 if (!quiet) { 1384 printf(_("Adding journal to device %s: "), 1385 journal_device); 1386 fflush(stdout); 1387 } 1388 retval = ext2fs_add_journal_device(fs, jfs); 1389 if(retval) { 1390 com_err (program_name, retval, 1391 _("\n\twhile trying to add journal to device %s"), 1392 journal_device); 1393 exit(1); 1394 } 1395 if (!quiet) 1396 printf(_("done\n")); 1397 ext2fs_close(jfs); 1398 free(journal_device); 1399 } else if (journal_size) { 1400 journal_blocks = figure_journal_size(journal_size, fs); 1401 1402 if (!journal_blocks) { 1403 fs->super->s_feature_compat &= 1404 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 1405 goto no_journal; 1406 } 1407 if (!quiet) { 1408 printf(_("Creating journal (%d blocks): "), 1409 journal_blocks); 1410 fflush(stdout); 1411 } 1412 retval = ext2fs_add_journal_inode(fs, journal_blocks, 1413 journal_flags); 1414 if (retval) { 1415 com_err (program_name, retval, 1416 _("\n\twhile trying to create journal")); 1417 exit(1); 1418 } 1419 if (!quiet) 1420 printf(_("done\n")); 1421 } 1422no_journal: 1423 1424 if (!quiet) 1425 printf(_("Writing superblocks and " 1426 "filesystem accounting information: ")); 1427 retval = ext2fs_flush(fs); 1428 if (retval) { 1429 fprintf(stderr, 1430 _("\nWarning, had trouble writing out superblocks.")); 1431 } 1432 if (!quiet) { 1433 printf(_("done\n\n")); 1434 print_check_message(fs); 1435 } 1436 val = ext2fs_close(fs); 1437 return (retval || val) ? 1 : 0; 1438} 1439