mke2fs.c revision 2ee4544d07af35a6a667400cca35657e37d55c3b
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 <strings.h> 24#include <fcntl.h> 25#include <ctype.h> 26#include <time.h> 27#ifdef __linux__ 28#include <sys/utsname.h> 29#endif 30#ifdef HAVE_GETOPT_H 31#include <getopt.h> 32#else 33extern char *optarg; 34extern int optind; 35#endif 36#ifdef HAVE_UNISTD_H 37#include <unistd.h> 38#endif 39#ifdef HAVE_STDLIB_H 40#include <stdlib.h> 41#endif 42#ifdef HAVE_ERRNO_H 43#include <errno.h> 44#endif 45#ifdef HAVE_MNTENT_H 46#include <mntent.h> 47#endif 48#include <sys/ioctl.h> 49#include <sys/types.h> 50#include <sys/stat.h> 51#include <libgen.h> 52#include <limits.h> 53#include <blkid/blkid.h> 54 55#include "ext2fs/ext2_fs.h" 56#include "et/com_err.h" 57#include "uuid/uuid.h" 58#include "e2p/e2p.h" 59#include "ext2fs/ext2fs.h" 60#include "util.h" 61#include "profile.h" 62#include "prof_err.h" 63#include "../version.h" 64#include "nls-enable.h" 65 66#define STRIDE_LENGTH 8 67 68#ifndef __sparc__ 69#define ZAP_BOOTBLOCK 70#endif 71 72extern int isatty(int); 73extern FILE *fpopen(const char *cmd, const char *mode); 74 75const char * program_name = "mke2fs"; 76const char * device_name /* = NULL */; 77 78/* Command line options */ 79int cflag; 80int verbose; 81int quiet; 82int super_only; 83int discard = 1; /* attempt to discard device before fs creation */ 84int force; 85int noaction; 86int journal_size; 87int journal_flags; 88int lazy_itable_init; 89char *bad_blocks_filename; 90__u32 fs_stride; 91 92struct ext2_super_block fs_param; 93char *fs_uuid = NULL; 94char *creator_os; 95char *volume_label; 96char *mount_dir; 97char *journal_device; 98int sync_kludge; /* Set using the MKE2FS_SYNC env. option */ 99char **fs_types; 100 101profile_t profile; 102 103int sys_page_size = 4096; 104int linux_version_code = 0; 105 106static void usage(void) 107{ 108 fprintf(stderr, _("Usage: %s [-c|-l filename] [-b block-size] " 109 "[-f fragment-size]\n\t[-i bytes-per-inode] [-I inode-size] " 110 "[-J journal-options]\n" 111 "\t[-G meta group size] [-N number-of-inodes]\n" 112 "\t[-m reserved-blocks-percentage] [-o creator-os]\n" 113 "\t[-g blocks-per-group] [-L volume-label] " 114 "[-M last-mounted-directory]\n\t[-O feature[,...]] " 115 "[-r fs-revision] [-E extended-option[,...]]\n" 116 "\t[-T fs-type] [-U UUID] [-jnqvFKSV] device [blocks-count]\n"), 117 program_name); 118 exit(1); 119} 120 121static int int_log2(int arg) 122{ 123 int l = 0; 124 125 arg >>= 1; 126 while (arg) { 127 l++; 128 arg >>= 1; 129 } 130 return l; 131} 132 133static int int_log10(unsigned int arg) 134{ 135 int l; 136 137 for (l=0; arg ; l++) 138 arg = arg / 10; 139 return l; 140} 141 142static int parse_version_number(const char *s) 143{ 144 int major, minor, rev; 145 char *endptr; 146 const char *cp = s; 147 148 if (!s) 149 return 0; 150 major = strtol(cp, &endptr, 10); 151 if (cp == endptr || *endptr != '.') 152 return 0; 153 cp = endptr + 1; 154 minor = strtol(cp, &endptr, 10); 155 if (cp == endptr || *endptr != '.') 156 return 0; 157 cp = endptr + 1; 158 rev = strtol(cp, &endptr, 10); 159 if (cp == endptr) 160 return 0; 161 return ((((major * 256) + minor) * 256) + rev); 162} 163 164/* 165 * Helper function for read_bb_file and test_disk 166 */ 167static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk) 168{ 169 fprintf(stderr, _("Bad block %u out of range; ignored.\n"), blk); 170 return; 171} 172 173/* 174 * Reads the bad blocks list from a file 175 */ 176static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list, 177 const char *bad_blocks_file) 178{ 179 FILE *f; 180 errcode_t retval; 181 182 f = fopen(bad_blocks_file, "r"); 183 if (!f) { 184 com_err("read_bad_blocks_file", errno, 185 _("while trying to open %s"), bad_blocks_file); 186 exit(1); 187 } 188 retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block); 189 fclose (f); 190 if (retval) { 191 com_err("ext2fs_read_bb_FILE", retval, 192 _("while reading in list of bad blocks from file")); 193 exit(1); 194 } 195} 196 197/* 198 * Runs the badblocks program to test the disk 199 */ 200static void test_disk(ext2_filsys fs, badblocks_list *bb_list) 201{ 202 FILE *f; 203 errcode_t retval; 204 char buf[1024]; 205 206 sprintf(buf, "badblocks -b %d -X %s%s%s %u", fs->blocksize, 207 quiet ? "" : "-s ", (cflag > 1) ? "-w " : "", 208 fs->device_name, fs->super->s_blocks_count-1); 209 if (verbose) 210 printf(_("Running command: %s\n"), buf); 211 f = popen(buf, "r"); 212 if (!f) { 213 com_err("popen", errno, 214 _("while trying to run '%s'"), buf); 215 exit(1); 216 } 217 retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block); 218 pclose(f); 219 if (retval) { 220 com_err("ext2fs_read_bb_FILE", retval, 221 _("while processing list of bad blocks from program")); 222 exit(1); 223 } 224} 225 226static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list) 227{ 228 dgrp_t i; 229 blk_t j; 230 unsigned must_be_good; 231 blk_t blk; 232 badblocks_iterate bb_iter; 233 errcode_t retval; 234 blk_t group_block; 235 int group; 236 int group_bad; 237 238 if (!bb_list) 239 return; 240 241 /* 242 * The primary superblock and group descriptors *must* be 243 * good; if not, abort. 244 */ 245 must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks; 246 for (i = fs->super->s_first_data_block; i <= must_be_good; i++) { 247 if (ext2fs_badblocks_list_test(bb_list, i)) { 248 fprintf(stderr, _("Block %d in primary " 249 "superblock/group descriptor area bad.\n"), i); 250 fprintf(stderr, _("Blocks %u through %u must be good " 251 "in order to build a filesystem.\n"), 252 fs->super->s_first_data_block, must_be_good); 253 fputs(_("Aborting....\n"), stderr); 254 exit(1); 255 } 256 } 257 258 /* 259 * See if any of the bad blocks are showing up in the backup 260 * superblocks and/or group descriptors. If so, issue a 261 * warning and adjust the block counts appropriately. 262 */ 263 group_block = fs->super->s_first_data_block + 264 fs->super->s_blocks_per_group; 265 266 for (i = 1; i < fs->group_desc_count; i++) { 267 group_bad = 0; 268 for (j=0; j < fs->desc_blocks+1; j++) { 269 if (ext2fs_badblocks_list_test(bb_list, 270 group_block + j)) { 271 if (!group_bad) 272 fprintf(stderr, 273_("Warning: the backup superblock/group descriptors at block %u contain\n" 274" bad blocks.\n\n"), 275 group_block); 276 group_bad++; 277 group = ext2fs_group_of_blk(fs, group_block+j); 278 fs->group_desc[group].bg_free_blocks_count++; 279 ext2fs_group_desc_csum_set(fs, group); 280 fs->super->s_free_blocks_count++; 281 } 282 } 283 group_block += fs->super->s_blocks_per_group; 284 } 285 286 /* 287 * Mark all the bad blocks as used... 288 */ 289 retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter); 290 if (retval) { 291 com_err("ext2fs_badblocks_list_iterate_begin", retval, 292 _("while marking bad blocks as used")); 293 exit(1); 294 } 295 while (ext2fs_badblocks_list_iterate(bb_iter, &blk)) 296 ext2fs_mark_block_bitmap(fs->block_map, blk); 297 ext2fs_badblocks_list_iterate_end(bb_iter); 298} 299 300/* 301 * These functions implement a generalized progress meter. 302 */ 303struct progress_struct { 304 char format[20]; 305 char backup[80]; 306 __u32 max; 307 int skip_progress; 308}; 309 310static void progress_init(struct progress_struct *progress, 311 const char *label,__u32 max) 312{ 313 int i; 314 315 memset(progress, 0, sizeof(struct progress_struct)); 316 if (quiet) 317 return; 318 319 /* 320 * Figure out how many digits we need 321 */ 322 i = int_log10(max); 323 sprintf(progress->format, "%%%dd/%%%dld", i, i); 324 memset(progress->backup, '\b', sizeof(progress->backup)-1); 325 progress->backup[sizeof(progress->backup)-1] = 0; 326 if ((2*i)+1 < (int) sizeof(progress->backup)) 327 progress->backup[(2*i)+1] = 0; 328 progress->max = max; 329 330 progress->skip_progress = 0; 331 if (getenv("MKE2FS_SKIP_PROGRESS")) 332 progress->skip_progress++; 333 334 fputs(label, stdout); 335 fflush(stdout); 336} 337 338static void progress_update(struct progress_struct *progress, __u32 val) 339{ 340 if ((progress->format[0] == 0) || progress->skip_progress) 341 return; 342 printf(progress->format, val, progress->max); 343 fputs(progress->backup, stdout); 344} 345 346static void progress_close(struct progress_struct *progress) 347{ 348 if (progress->format[0] == 0) 349 return; 350 fputs(_("done \n"), stdout); 351} 352 353static void write_inode_tables(ext2_filsys fs, int lazy_flag, int itable_zeroed) 354{ 355 errcode_t retval; 356 blk_t blk; 357 dgrp_t i; 358 int num, ipb; 359 struct progress_struct progress; 360 361 if (quiet) 362 memset(&progress, 0, sizeof(progress)); 363 else 364 progress_init(&progress, _("Writing inode tables: "), 365 fs->group_desc_count); 366 367 for (i = 0; i < fs->group_desc_count; i++) { 368 progress_update(&progress, i); 369 370 blk = fs->group_desc[i].bg_inode_table; 371 num = fs->inode_blocks_per_group; 372 373 if (lazy_flag) { 374 ipb = fs->blocksize / EXT2_INODE_SIZE(fs->super); 375 num = ((((fs->super->s_inodes_per_group - 376 fs->group_desc[i].bg_itable_unused) * 377 EXT2_INODE_SIZE(fs->super)) + 378 EXT2_BLOCK_SIZE(fs->super) - 1) / 379 EXT2_BLOCK_SIZE(fs->super)); 380 } 381 if (!lazy_flag || itable_zeroed) { 382 /* The kernel doesn't need to zero the itable blocks */ 383 fs->group_desc[i].bg_flags |= EXT2_BG_INODE_ZEROED; 384 ext2fs_group_desc_csum_set(fs, i); 385 } 386 retval = ext2fs_zero_blocks(fs, blk, num, &blk, &num); 387 if (retval) { 388 fprintf(stderr, _("\nCould not write %d " 389 "blocks in inode table starting at %u: %s\n"), 390 num, blk, error_message(retval)); 391 exit(1); 392 } 393 if (sync_kludge) { 394 if (sync_kludge == 1) 395 sync(); 396 else if ((i % sync_kludge) == 0) 397 sync(); 398 } 399 } 400 ext2fs_zero_blocks(0, 0, 0, 0, 0); 401 progress_close(&progress); 402} 403 404static void create_root_dir(ext2_filsys fs) 405{ 406 errcode_t retval; 407 struct ext2_inode inode; 408 __u32 uid, gid; 409 410 retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0); 411 if (retval) { 412 com_err("ext2fs_mkdir", retval, _("while creating root dir")); 413 exit(1); 414 } 415 if (geteuid()) { 416 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode); 417 if (retval) { 418 com_err("ext2fs_read_inode", retval, 419 _("while reading root inode")); 420 exit(1); 421 } 422 uid = getuid(); 423 inode.i_uid = uid; 424 ext2fs_set_i_uid_high(inode, uid >> 16); 425 if (uid) { 426 gid = getgid(); 427 inode.i_gid = gid; 428 ext2fs_set_i_gid_high(inode, gid >> 16); 429 } 430 retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode); 431 if (retval) { 432 com_err("ext2fs_write_inode", retval, 433 _("while setting root inode ownership")); 434 exit(1); 435 } 436 } 437} 438 439static void create_lost_and_found(ext2_filsys fs) 440{ 441 unsigned int lpf_size = 0; 442 errcode_t retval; 443 ext2_ino_t ino; 444 const char *name = "lost+found"; 445 int i; 446 447 fs->umask = 077; 448 retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name); 449 if (retval) { 450 com_err("ext2fs_mkdir", retval, 451 _("while creating /lost+found")); 452 exit(1); 453 } 454 455 retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino); 456 if (retval) { 457 com_err("ext2_lookup", retval, 458 _("while looking up /lost+found")); 459 exit(1); 460 } 461 462 for (i=1; i < EXT2_NDIR_BLOCKS; i++) { 463 /* Ensure that lost+found is at least 2 blocks, so we always 464 * test large empty blocks for big-block filesystems. */ 465 if ((lpf_size += fs->blocksize) >= 16*1024 && 466 lpf_size >= 2 * fs->blocksize) 467 break; 468 retval = ext2fs_expand_dir(fs, ino); 469 if (retval) { 470 com_err("ext2fs_expand_dir", retval, 471 _("while expanding /lost+found")); 472 exit(1); 473 } 474 } 475} 476 477static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list) 478{ 479 errcode_t retval; 480 481 ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO); 482 ext2fs_inode_alloc_stats2(fs, EXT2_BAD_INO, +1, 0); 483 retval = ext2fs_update_bb_inode(fs, bb_list); 484 if (retval) { 485 com_err("ext2fs_update_bb_inode", retval, 486 _("while setting bad block inode")); 487 exit(1); 488 } 489 490} 491 492static void reserve_inodes(ext2_filsys fs) 493{ 494 ext2_ino_t i; 495 496 for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) 497 ext2fs_inode_alloc_stats2(fs, i, +1, 0); 498 ext2fs_mark_ib_dirty(fs); 499} 500 501#define BSD_DISKMAGIC (0x82564557UL) /* The disk magic number */ 502#define BSD_MAGICDISK (0x57455682UL) /* The disk magic number reversed */ 503#define BSD_LABEL_OFFSET 64 504 505static void zap_sector(ext2_filsys fs, int sect, int nsect) 506{ 507 char *buf; 508 int retval; 509 unsigned int *magic; 510 511 buf = malloc(512*nsect); 512 if (!buf) { 513 printf(_("Out of memory erasing sectors %d-%d\n"), 514 sect, sect + nsect - 1); 515 exit(1); 516 } 517 518 if (sect == 0) { 519 /* Check for a BSD disklabel, and don't erase it if so */ 520 retval = io_channel_read_blk(fs->io, 0, -512, buf); 521 if (retval) 522 fprintf(stderr, 523 _("Warning: could not read block 0: %s\n"), 524 error_message(retval)); 525 else { 526 magic = (unsigned int *) (buf + BSD_LABEL_OFFSET); 527 if ((*magic == BSD_DISKMAGIC) || 528 (*magic == BSD_MAGICDISK)) 529 return; 530 } 531 } 532 533 memset(buf, 0, 512*nsect); 534 io_channel_set_blksize(fs->io, 512); 535 retval = io_channel_write_blk(fs->io, sect, -512*nsect, buf); 536 io_channel_set_blksize(fs->io, fs->blocksize); 537 free(buf); 538 if (retval) 539 fprintf(stderr, _("Warning: could not erase sector %d: %s\n"), 540 sect, error_message(retval)); 541} 542 543static void create_journal_dev(ext2_filsys fs) 544{ 545 struct progress_struct progress; 546 errcode_t retval; 547 char *buf; 548 blk_t blk, err_blk; 549 int c, count, err_count; 550 551 retval = ext2fs_create_journal_superblock(fs, 552 fs->super->s_blocks_count, 0, &buf); 553 if (retval) { 554 com_err("create_journal_dev", retval, 555 _("while initializing journal superblock")); 556 exit(1); 557 } 558 if (quiet) 559 memset(&progress, 0, sizeof(progress)); 560 else 561 progress_init(&progress, _("Zeroing journal device: "), 562 fs->super->s_blocks_count); 563 564 blk = 0; 565 count = fs->super->s_blocks_count; 566 while (count > 0) { 567 if (count > 1024) 568 c = 1024; 569 else 570 c = count; 571 retval = ext2fs_zero_blocks(fs, blk, c, &err_blk, &err_count); 572 if (retval) { 573 com_err("create_journal_dev", retval, 574 _("while zeroing journal device " 575 "(block %u, count %d)"), 576 err_blk, err_count); 577 exit(1); 578 } 579 blk += c; 580 count -= c; 581 progress_update(&progress, blk); 582 } 583 ext2fs_zero_blocks(0, 0, 0, 0, 0); 584 585 retval = io_channel_write_blk(fs->io, 586 fs->super->s_first_data_block+1, 587 1, buf); 588 if (retval) { 589 com_err("create_journal_dev", retval, 590 _("while writing journal superblock")); 591 exit(1); 592 } 593 progress_close(&progress); 594} 595 596static void show_stats(ext2_filsys fs) 597{ 598 struct ext2_super_block *s = fs->super; 599 char buf[80]; 600 char *os; 601 blk_t group_block; 602 dgrp_t i; 603 int need, col_left; 604 605 if (fs_param.s_blocks_count != s->s_blocks_count) 606 fprintf(stderr, _("warning: %u blocks unused.\n\n"), 607 fs_param.s_blocks_count - s->s_blocks_count); 608 609 memset(buf, 0, sizeof(buf)); 610 strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name)); 611 printf(_("Filesystem label=%s\n"), buf); 612 fputs(_("OS type: "), stdout); 613 os = e2p_os2string(fs->super->s_creator_os); 614 fputs(os, stdout); 615 free(os); 616 printf("\n"); 617 printf(_("Block size=%u (log=%u)\n"), fs->blocksize, 618 s->s_log_block_size); 619 printf(_("Fragment size=%u (log=%u)\n"), fs->fragsize, 620 s->s_log_frag_size); 621 printf(_("Stride=%u blocks, Stripe width=%u blocks\n"), 622 s->s_raid_stride, s->s_raid_stripe_width); 623 printf(_("%u inodes, %u blocks\n"), s->s_inodes_count, 624 s->s_blocks_count); 625 printf(_("%u blocks (%2.2f%%) reserved for the super user\n"), 626 s->s_r_blocks_count, 627 100.0 * s->s_r_blocks_count / s->s_blocks_count); 628 printf(_("First data block=%u\n"), s->s_first_data_block); 629 if (s->s_reserved_gdt_blocks) 630 printf(_("Maximum filesystem blocks=%lu\n"), 631 (s->s_reserved_gdt_blocks + fs->desc_blocks) * 632 EXT2_DESC_PER_BLOCK(s) * s->s_blocks_per_group); 633 if (fs->group_desc_count > 1) 634 printf(_("%u block groups\n"), fs->group_desc_count); 635 else 636 printf(_("%u block group\n"), fs->group_desc_count); 637 printf(_("%u blocks per group, %u fragments per group\n"), 638 s->s_blocks_per_group, s->s_frags_per_group); 639 printf(_("%u inodes per group\n"), s->s_inodes_per_group); 640 641 if (fs->group_desc_count == 1) { 642 printf("\n"); 643 return; 644 } 645 646 printf(_("Superblock backups stored on blocks: ")); 647 group_block = s->s_first_data_block; 648 col_left = 0; 649 for (i = 1; i < fs->group_desc_count; i++) { 650 group_block += s->s_blocks_per_group; 651 if (!ext2fs_bg_has_super(fs, i)) 652 continue; 653 if (i != 1) 654 printf(", "); 655 need = int_log10(group_block) + 2; 656 if (need > col_left) { 657 printf("\n\t"); 658 col_left = 72; 659 } 660 col_left -= need; 661 printf("%u", group_block); 662 } 663 printf("\n\n"); 664} 665 666/* 667 * Set the S_CREATOR_OS field. Return true if OS is known, 668 * otherwise, 0. 669 */ 670static int set_os(struct ext2_super_block *sb, char *os) 671{ 672 if (isdigit (*os)) 673 sb->s_creator_os = atoi (os); 674 else if (strcasecmp(os, "linux") == 0) 675 sb->s_creator_os = EXT2_OS_LINUX; 676 else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0) 677 sb->s_creator_os = EXT2_OS_HURD; 678 else if (strcasecmp(os, "freebsd") == 0) 679 sb->s_creator_os = EXT2_OS_FREEBSD; 680 else if (strcasecmp(os, "lites") == 0) 681 sb->s_creator_os = EXT2_OS_LITES; 682 else 683 return 0; 684 return 1; 685} 686 687#define PATH_SET "PATH=/sbin" 688 689static void parse_extended_opts(struct ext2_super_block *param, 690 const char *opts) 691{ 692 char *buf, *token, *next, *p, *arg, *badopt = 0; 693 int len; 694 int r_usage = 0; 695 696 len = strlen(opts); 697 buf = malloc(len+1); 698 if (!buf) { 699 fprintf(stderr, 700 _("Couldn't allocate memory to parse options!\n")); 701 exit(1); 702 } 703 strcpy(buf, opts); 704 for (token = buf; token && *token; token = next) { 705 p = strchr(token, ','); 706 next = 0; 707 if (p) { 708 *p = 0; 709 next = p+1; 710 } 711 arg = strchr(token, '='); 712 if (arg) { 713 *arg = 0; 714 arg++; 715 } 716 if (strcmp(token, "stride") == 0) { 717 if (!arg) { 718 r_usage++; 719 badopt = token; 720 continue; 721 } 722 param->s_raid_stride = strtoul(arg, &p, 0); 723 if (*p || (param->s_raid_stride == 0)) { 724 fprintf(stderr, 725 _("Invalid stride parameter: %s\n"), 726 arg); 727 r_usage++; 728 continue; 729 } 730 } else if (strcmp(token, "stripe-width") == 0 || 731 strcmp(token, "stripe_width") == 0) { 732 if (!arg) { 733 r_usage++; 734 badopt = token; 735 continue; 736 } 737 param->s_raid_stripe_width = strtoul(arg, &p, 0); 738 if (*p || (param->s_raid_stripe_width == 0)) { 739 fprintf(stderr, 740 _("Invalid stripe-width parameter: %s\n"), 741 arg); 742 r_usage++; 743 continue; 744 } 745 } else if (!strcmp(token, "resize")) { 746 unsigned long resize, bpg, rsv_groups; 747 unsigned long group_desc_count, desc_blocks; 748 unsigned int gdpb, blocksize; 749 int rsv_gdb; 750 751 if (!arg) { 752 r_usage++; 753 badopt = token; 754 continue; 755 } 756 757 resize = parse_num_blocks(arg, 758 param->s_log_block_size); 759 760 if (resize == 0) { 761 fprintf(stderr, 762 _("Invalid resize parameter: %s\n"), 763 arg); 764 r_usage++; 765 continue; 766 } 767 if (resize <= param->s_blocks_count) { 768 fprintf(stderr, 769 _("The resize maximum must be greater " 770 "than the filesystem size.\n")); 771 r_usage++; 772 continue; 773 } 774 775 blocksize = EXT2_BLOCK_SIZE(param); 776 bpg = param->s_blocks_per_group; 777 if (!bpg) 778 bpg = blocksize * 8; 779 gdpb = EXT2_DESC_PER_BLOCK(param); 780 group_desc_count = 781 ext2fs_div_ceil(param->s_blocks_count, bpg); 782 desc_blocks = (group_desc_count + 783 gdpb - 1) / gdpb; 784 rsv_groups = ext2fs_div_ceil(resize, bpg); 785 rsv_gdb = ext2fs_div_ceil(rsv_groups, gdpb) - 786 desc_blocks; 787 if (rsv_gdb > (int) EXT2_ADDR_PER_BLOCK(param)) 788 rsv_gdb = EXT2_ADDR_PER_BLOCK(param); 789 790 if (rsv_gdb > 0) { 791 if (param->s_rev_level == EXT2_GOOD_OLD_REV) { 792 fprintf(stderr, 793 _("On-line resizing not supported with revision 0 filesystems\n")); 794 free(buf); 795 exit(1); 796 } 797 param->s_feature_compat |= 798 EXT2_FEATURE_COMPAT_RESIZE_INODE; 799 800 param->s_reserved_gdt_blocks = rsv_gdb; 801 } 802 } else if (!strcmp(token, "test_fs")) { 803 param->s_flags |= EXT2_FLAGS_TEST_FILESYS; 804 } else if (!strcmp(token, "lazy_itable_init")) { 805 if (arg) 806 lazy_itable_init = strtoul(arg, &p, 0); 807 else 808 lazy_itable_init = 1; 809 } else if (!strcmp(token, "discard")) { 810 discard = 1; 811 } else if (!strcmp(token, "nodiscard")) { 812 discard = 0; 813 } else { 814 r_usage++; 815 badopt = token; 816 } 817 } 818 if (r_usage) { 819 fprintf(stderr, _("\nBad option(s) specified: %s\n\n" 820 "Extended options are separated by commas, " 821 "and may take an argument which\n" 822 "\tis set off by an equals ('=') sign.\n\n" 823 "Valid extended options are:\n" 824 "\tstride=<RAID per-disk data chunk in blocks>\n" 825 "\tstripe-width=<RAID stride * data disks in blocks>\n" 826 "\tresize=<resize maximum size in blocks>\n" 827 "\tlazy_itable_init=<0 to disable, 1 to enable>\n" 828 "\ttest_fs\n" 829 "\tdiscard\n" 830 "\tnodiscard\n\n"), 831 badopt ? badopt : ""); 832 free(buf); 833 exit(1); 834 } 835 if (param->s_raid_stride && 836 (param->s_raid_stripe_width % param->s_raid_stride) != 0) 837 fprintf(stderr, _("\nWarning: RAID stripe-width %u not an even " 838 "multiple of stride %u.\n\n"), 839 param->s_raid_stripe_width, param->s_raid_stride); 840 841 free(buf); 842} 843 844static __u32 ok_features[3] = { 845 /* Compat */ 846 EXT3_FEATURE_COMPAT_HAS_JOURNAL | 847 EXT2_FEATURE_COMPAT_RESIZE_INODE | 848 EXT2_FEATURE_COMPAT_DIR_INDEX | 849 EXT2_FEATURE_COMPAT_EXT_ATTR, 850 /* Incompat */ 851 EXT2_FEATURE_INCOMPAT_FILETYPE| 852 EXT3_FEATURE_INCOMPAT_EXTENTS| 853 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV| 854 EXT2_FEATURE_INCOMPAT_META_BG| 855 EXT4_FEATURE_INCOMPAT_FLEX_BG, 856 /* R/O compat */ 857 EXT2_FEATURE_RO_COMPAT_LARGE_FILE| 858 EXT4_FEATURE_RO_COMPAT_HUGE_FILE| 859 EXT4_FEATURE_RO_COMPAT_DIR_NLINK| 860 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE| 861 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| 862 EXT4_FEATURE_RO_COMPAT_GDT_CSUM 863}; 864 865 866static void syntax_err_report(const char *filename, long err, int line_num) 867{ 868 fprintf(stderr, 869 _("Syntax error in mke2fs config file (%s, line #%d)\n\t%s\n"), 870 filename, line_num, error_message(err)); 871 exit(1); 872} 873 874static const char *config_fn[] = { ROOT_SYSCONFDIR "/mke2fs.conf", 0 }; 875 876static void edit_feature(const char *str, __u32 *compat_array) 877{ 878 if (!str) 879 return; 880 881 if (e2p_edit_feature(str, compat_array, ok_features)) { 882 fprintf(stderr, _("Invalid filesystem option set: %s\n"), 883 str); 884 exit(1); 885 } 886} 887 888struct str_list { 889 char **list; 890 int num; 891 int max; 892}; 893 894static errcode_t init_list(struct str_list *sl) 895{ 896 sl->num = 0; 897 sl->max = 0; 898 sl->list = malloc((sl->max+1) * sizeof(char *)); 899 if (!sl->list) 900 return ENOMEM; 901 sl->list[0] = 0; 902 return 0; 903} 904 905static errcode_t push_string(struct str_list *sl, const char *str) 906{ 907 char **new_list; 908 909 if (sl->num >= sl->max) { 910 sl->max += 2; 911 new_list = realloc(sl->list, (sl->max+1) * sizeof(char *)); 912 if (!new_list) 913 return ENOMEM; 914 sl->list = new_list; 915 } 916 sl->list[sl->num] = malloc(strlen(str)+1); 917 if (sl->list[sl->num] == 0) 918 return ENOMEM; 919 strcpy(sl->list[sl->num], str); 920 sl->num++; 921 sl->list[sl->num] = 0; 922 return 0; 923} 924 925static void print_str_list(char **list) 926{ 927 char **cpp; 928 929 for (cpp = list; *cpp; cpp++) { 930 printf("'%s'", *cpp); 931 if (cpp[1]) 932 fputs(", ", stdout); 933 } 934 fputc('\n', stdout); 935} 936 937/* 938 * Return TRUE if the profile has the given subsection 939 */ 940static int profile_has_subsection(profile_t profile, const char *section, 941 const char *subsection) 942{ 943 void *state; 944 const char *names[4]; 945 char *name; 946 int ret = 0; 947 948 names[0] = section; 949 names[1] = subsection; 950 names[2] = 0; 951 952 if (profile_iterator_create(profile, names, 953 PROFILE_ITER_LIST_SECTION | 954 PROFILE_ITER_RELATIONS_ONLY, &state)) 955 return 0; 956 957 if ((profile_iterator(&state, &name, 0) == 0) && name) { 958 free(name); 959 ret = 1; 960 } 961 962 profile_iterator_free(&state); 963 return ret; 964} 965 966static char **parse_fs_type(const char *fs_type, 967 const char *usage_types, 968 struct ext2_super_block *fs_param, 969 char *progname) 970{ 971 const char *ext_type = 0; 972 char *parse_str; 973 char *profile_type = 0; 974 char *cp, *t; 975 const char *size_type; 976 struct str_list list; 977 unsigned long meg; 978 int is_hurd = 0; 979 980 if (init_list(&list)) 981 return 0; 982 983 if (creator_os && (!strcasecmp(creator_os, "GNU") || 984 !strcasecmp(creator_os, "hurd"))) 985 is_hurd = 1; 986 987 if (fs_type) 988 ext_type = fs_type; 989 else if (is_hurd) 990 ext_type = "ext2"; 991 else if (!strcmp(program_name, "mke3fs")) 992 ext_type = "ext3"; 993 else if (progname) { 994 ext_type = strrchr(progname, '/'); 995 if (ext_type) 996 ext_type++; 997 else 998 ext_type = progname; 999 1000 if (!strncmp(ext_type, "mkfs.", 5)) { 1001 ext_type += 5; 1002 if (ext_type[0] == 0) 1003 ext_type = 0; 1004 } else 1005 ext_type = 0; 1006 } 1007 1008 if (!ext_type) { 1009 profile_get_string(profile, "defaults", "fs_type", 0, 1010 "ext2", &profile_type); 1011 ext_type = profile_type; 1012 if (!strcmp(ext_type, "ext2") && (journal_size != 0)) 1013 ext_type = "ext3"; 1014 } 1015 1016 1017 if (!profile_has_subsection(profile, "fs_types", ext_type) && 1018 strcmp(ext_type, "ext2")) { 1019 printf(_("\nYour mke2fs.conf file does not define the " 1020 "%s filesystem type.\n"), ext_type); 1021 if (!strcmp(ext_type, "ext3") || !strcmp(ext_type, "ext4") || 1022 !strcmp(ext_type, "ext4dev")) { 1023 printf(_("You probably need to install an updated " 1024 "mke2fs.conf file.\n\n")); 1025 } 1026 if (!force) { 1027 printf(_("Aborting...\n")); 1028 exit(1); 1029 } 1030 } 1031 1032 meg = (1024 * 1024) / EXT2_BLOCK_SIZE(fs_param); 1033 if (fs_param->s_blocks_count < 3 * meg) 1034 size_type = "floppy"; 1035 else if (fs_param->s_blocks_count < 512 * meg) 1036 size_type = "small"; 1037 else 1038 size_type = "default"; 1039 1040 if (!usage_types) 1041 usage_types = size_type; 1042 1043 parse_str = malloc(usage_types ? strlen(usage_types)+1 : 1); 1044 if (!parse_str) { 1045 free(list.list); 1046 return 0; 1047 } 1048 if (usage_types) 1049 strcpy(parse_str, usage_types); 1050 else 1051 *parse_str = '\0'; 1052 1053 if (ext_type) 1054 push_string(&list, ext_type); 1055 cp = parse_str; 1056 while (1) { 1057 t = strchr(cp, ','); 1058 if (t) 1059 *t = '\0'; 1060 1061 if (*cp) { 1062 if (!profile_has_subsection(profile, "fs_types", cp)) 1063 fprintf(stderr, 1064 _("\nWarning: the fs_type %s is not " 1065 "defined in /etc/mke2fs.conf\n\n"), 1066 cp); 1067 else 1068 push_string(&list, cp); 1069 } 1070 if (t) 1071 cp = t+1; 1072 else { 1073 cp = ""; 1074 break; 1075 } 1076 } 1077 free(parse_str); 1078 free(profile_type); 1079 if (is_hurd) 1080 push_string(&list, "hurd"); 1081 return (list.list); 1082} 1083 1084static char *get_string_from_profile(char **fs_types, const char *opt, 1085 const char *def_val) 1086{ 1087 char *ret = 0; 1088 int i; 1089 1090 for (i=0; fs_types[i]; i++); 1091 for (i-=1; i >=0 ; i--) { 1092 profile_get_string(profile, "fs_types", fs_types[i], 1093 opt, 0, &ret); 1094 if (ret) 1095 return ret; 1096 } 1097 profile_get_string(profile, "defaults", opt, 0, def_val, &ret); 1098 return (ret); 1099} 1100 1101static int get_int_from_profile(char **fs_types, const char *opt, int def_val) 1102{ 1103 int ret; 1104 char **cpp; 1105 1106 profile_get_integer(profile, "defaults", opt, 0, def_val, &ret); 1107 for (cpp = fs_types; *cpp; cpp++) 1108 profile_get_integer(profile, "fs_types", *cpp, opt, ret, &ret); 1109 return ret; 1110} 1111 1112static int get_bool_from_profile(char **fs_types, const char *opt, int def_val) 1113{ 1114 int ret; 1115 char **cpp; 1116 1117 profile_get_boolean(profile, "defaults", opt, 0, def_val, &ret); 1118 for (cpp = fs_types; *cpp; cpp++) 1119 profile_get_boolean(profile, "fs_types", *cpp, opt, ret, &ret); 1120 return ret; 1121} 1122 1123extern const char *mke2fs_default_profile; 1124static const char *default_files[] = { "<default>", 0 }; 1125 1126#ifdef HAVE_BLKID_PROBE_GET_TOPOLOGY 1127/* 1128 * Sets the geometry of a device (stripe/stride), and returns the 1129 * device's alignment offset, if any, or a negative error. 1130 */ 1131static int get_device_geometry(const char *file, 1132 struct ext2_super_block *fs_param, 1133 int psector_size) 1134{ 1135 int rc = -1; 1136 int blocksize; 1137 blkid_probe pr; 1138 blkid_topology tp; 1139 unsigned long min_io; 1140 unsigned long opt_io; 1141 struct stat statbuf; 1142 1143 /* Nothing to do for a regular file */ 1144 if (!stat(file, &statbuf) && S_ISREG(statbuf.st_mode)) 1145 return 0; 1146 1147 pr = blkid_new_probe_from_filename(file); 1148 if (!pr) 1149 goto out; 1150 1151 tp = blkid_probe_get_topology(pr); 1152 if (!tp) 1153 goto out; 1154 1155 min_io = blkid_topology_get_minimum_io_size(tp); 1156 opt_io = blkid_topology_get_optimal_io_size(tp); 1157 blocksize = EXT2_BLOCK_SIZE(fs_param); 1158 if ((min_io == 0) && (psector_size > blocksize)) 1159 min_io = psector_size; 1160 if ((opt_io == 0) && min_io) 1161 opt_io = min_io; 1162 if ((opt_io == 0) && (psector_size > blocksize)) 1163 opt_io = psector_size; 1164 1165 fs_param->s_raid_stride = min_io / blocksize; 1166 fs_param->s_raid_stripe_width = opt_io / blocksize; 1167 1168 rc = blkid_topology_get_alignment_offset(tp); 1169out: 1170 blkid_free_probe(pr); 1171 return rc; 1172} 1173#endif 1174 1175static void PRS(int argc, char *argv[]) 1176{ 1177 int b, c; 1178 int size; 1179 char *tmp, **cpp; 1180 int blocksize = 0; 1181 int inode_ratio = 0; 1182 int inode_size = 0; 1183 unsigned long flex_bg_size = 0; 1184 double reserved_ratio = 5.0; 1185 int lsector_size = 0, psector_size = 0; 1186 int show_version_only = 0; 1187 unsigned long long num_inodes = 0; /* unsigned long long to catch too-large input */ 1188 errcode_t retval; 1189 char * oldpath = getenv("PATH"); 1190 char * extended_opts = 0; 1191 const char * fs_type = 0; 1192 const char * usage_types = 0; 1193 blk_t dev_size; 1194#ifdef __linux__ 1195 struct utsname ut; 1196#endif 1197 long sysval; 1198 int s_opt = -1, r_opt = -1; 1199 char *fs_features = 0; 1200 int use_bsize; 1201 char *newpath; 1202 int pathlen = sizeof(PATH_SET) + 1; 1203 1204 if (oldpath) 1205 pathlen += strlen(oldpath); 1206 newpath = malloc(pathlen); 1207 strcpy(newpath, PATH_SET); 1208 1209 /* Update our PATH to include /sbin */ 1210 if (oldpath) { 1211 strcat (newpath, ":"); 1212 strcat (newpath, oldpath); 1213 } 1214 putenv (newpath); 1215 1216 tmp = getenv("MKE2FS_SYNC"); 1217 if (tmp) 1218 sync_kludge = atoi(tmp); 1219 1220 /* Determine the system page size if possible */ 1221#ifdef HAVE_SYSCONF 1222#if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE)) 1223#define _SC_PAGESIZE _SC_PAGE_SIZE 1224#endif 1225#ifdef _SC_PAGESIZE 1226 sysval = sysconf(_SC_PAGESIZE); 1227 if (sysval > 0) 1228 sys_page_size = sysval; 1229#endif /* _SC_PAGESIZE */ 1230#endif /* HAVE_SYSCONF */ 1231 1232 if ((tmp = getenv("MKE2FS_CONFIG")) != NULL) 1233 config_fn[0] = tmp; 1234 profile_set_syntax_err_cb(syntax_err_report); 1235 retval = profile_init(config_fn, &profile); 1236 if (retval == ENOENT) { 1237 profile_init(default_files, &profile); 1238 profile_set_default(profile, mke2fs_default_profile); 1239 } 1240 1241 setbuf(stdout, NULL); 1242 setbuf(stderr, NULL); 1243 add_error_table(&et_ext2_error_table); 1244 add_error_table(&et_prof_error_table); 1245 memset(&fs_param, 0, sizeof(struct ext2_super_block)); 1246 fs_param.s_rev_level = 1; /* Create revision 1 filesystems now */ 1247 1248#ifdef __linux__ 1249 if (uname(&ut)) { 1250 perror("uname"); 1251 exit(1); 1252 } 1253 linux_version_code = parse_version_number(ut.release); 1254 if (linux_version_code && linux_version_code < (2*65536 + 2*256)) 1255 fs_param.s_rev_level = 0; 1256#endif 1257 1258 if (argc && *argv) { 1259 program_name = get_progname(*argv); 1260 1261 /* If called as mkfs.ext3, create a journal inode */ 1262 if (!strcmp(program_name, "mkfs.ext3") || 1263 !strcmp(program_name, "mke3fs")) 1264 journal_size = -1; 1265 } 1266 1267 while ((c = getopt (argc, argv, 1268 "b:cf:g:G:i:jl:m:no:qr:s:t:vE:FI:J:KL:M:N:O:R:ST:U:V")) != EOF) { 1269 switch (c) { 1270 case 'b': 1271 blocksize = strtol(optarg, &tmp, 0); 1272 b = (blocksize > 0) ? blocksize : -blocksize; 1273 if (b < EXT2_MIN_BLOCK_SIZE || 1274 b > EXT2_MAX_BLOCK_SIZE || *tmp) { 1275 com_err(program_name, 0, 1276 _("invalid block size - %s"), optarg); 1277 exit(1); 1278 } 1279 if (blocksize > 4096) 1280 fprintf(stderr, _("Warning: blocksize %d not " 1281 "usable on most systems.\n"), 1282 blocksize); 1283 if (blocksize > 0) 1284 fs_param.s_log_block_size = 1285 int_log2(blocksize >> 1286 EXT2_MIN_BLOCK_LOG_SIZE); 1287 break; 1288 case 'c': /* Check for bad blocks */ 1289 cflag++; 1290 break; 1291 case 'f': 1292 size = strtoul(optarg, &tmp, 0); 1293 if (size < EXT2_MIN_BLOCK_SIZE || 1294 size > EXT2_MAX_BLOCK_SIZE || *tmp) { 1295 com_err(program_name, 0, 1296 _("invalid fragment size - %s"), 1297 optarg); 1298 exit(1); 1299 } 1300 fs_param.s_log_frag_size = 1301 int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE); 1302 fprintf(stderr, _("Warning: fragments not supported. " 1303 "Ignoring -f option\n")); 1304 break; 1305 case 'g': 1306 fs_param.s_blocks_per_group = strtoul(optarg, &tmp, 0); 1307 if (*tmp) { 1308 com_err(program_name, 0, 1309 _("Illegal number for blocks per group")); 1310 exit(1); 1311 } 1312 if ((fs_param.s_blocks_per_group % 8) != 0) { 1313 com_err(program_name, 0, 1314 _("blocks per group must be multiple of 8")); 1315 exit(1); 1316 } 1317 break; 1318 case 'G': 1319 flex_bg_size = strtoul(optarg, &tmp, 0); 1320 if (*tmp) { 1321 com_err(program_name, 0, 1322 _("Illegal number for flex_bg size")); 1323 exit(1); 1324 } 1325 if (flex_bg_size < 1 || 1326 (flex_bg_size & (flex_bg_size-1)) != 0) { 1327 com_err(program_name, 0, 1328 _("flex_bg size must be a power of 2")); 1329 exit(1); 1330 } 1331 break; 1332 case 'i': 1333 inode_ratio = strtoul(optarg, &tmp, 0); 1334 if (inode_ratio < EXT2_MIN_BLOCK_SIZE || 1335 inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024 || 1336 *tmp) { 1337 com_err(program_name, 0, 1338 _("invalid inode ratio %s (min %d/max %d)"), 1339 optarg, EXT2_MIN_BLOCK_SIZE, 1340 EXT2_MAX_BLOCK_SIZE * 1024); 1341 exit(1); 1342 } 1343 break; 1344 case 'J': 1345 parse_journal_opts(optarg); 1346 break; 1347 case 'K': 1348 fprintf(stderr, _("Warning: -K option is deprecated and " 1349 "should not be used anymore. Use " 1350 "\'-E nodiscard\' extended option " 1351 "instead!\n")); 1352 discard = 0; 1353 break; 1354 case 'j': 1355 if (!journal_size) 1356 journal_size = -1; 1357 break; 1358 case 'l': 1359 bad_blocks_filename = malloc(strlen(optarg)+1); 1360 if (!bad_blocks_filename) { 1361 com_err(program_name, ENOMEM, 1362 _("in malloc for bad_blocks_filename")); 1363 exit(1); 1364 } 1365 strcpy(bad_blocks_filename, optarg); 1366 break; 1367 case 'm': 1368 reserved_ratio = strtod(optarg, &tmp); 1369 if ( *tmp || reserved_ratio > 50 || 1370 reserved_ratio < 0) { 1371 com_err(program_name, 0, 1372 _("invalid reserved blocks percent - %s"), 1373 optarg); 1374 exit(1); 1375 } 1376 break; 1377 case 'n': 1378 noaction++; 1379 break; 1380 case 'o': 1381 creator_os = optarg; 1382 break; 1383 case 'q': 1384 quiet = 1; 1385 break; 1386 case 'r': 1387 r_opt = strtoul(optarg, &tmp, 0); 1388 if (*tmp) { 1389 com_err(program_name, 0, 1390 _("bad revision level - %s"), optarg); 1391 exit(1); 1392 } 1393 fs_param.s_rev_level = r_opt; 1394 break; 1395 case 's': /* deprecated */ 1396 s_opt = atoi(optarg); 1397 break; 1398 case 'I': 1399 inode_size = strtoul(optarg, &tmp, 0); 1400 if (*tmp) { 1401 com_err(program_name, 0, 1402 _("invalid inode size - %s"), optarg); 1403 exit(1); 1404 } 1405 break; 1406 case 'v': 1407 verbose = 1; 1408 break; 1409 case 'F': 1410 force++; 1411 break; 1412 case 'L': 1413 volume_label = optarg; 1414 break; 1415 case 'M': 1416 mount_dir = optarg; 1417 break; 1418 case 'N': 1419 num_inodes = strtoul(optarg, &tmp, 0); 1420 if (*tmp) { 1421 com_err(program_name, 0, 1422 _("bad num inodes - %s"), optarg); 1423 exit(1); 1424 } 1425 break; 1426 case 'O': 1427 fs_features = optarg; 1428 break; 1429 case 'E': 1430 case 'R': 1431 extended_opts = optarg; 1432 break; 1433 case 'S': 1434 super_only = 1; 1435 break; 1436 case 't': 1437 fs_type = optarg; 1438 break; 1439 case 'T': 1440 usage_types = optarg; 1441 break; 1442 case 'U': 1443 fs_uuid = optarg; 1444 break; 1445 case 'V': 1446 /* Print version number and exit */ 1447 show_version_only++; 1448 break; 1449 default: 1450 usage(); 1451 } 1452 } 1453 if ((optind == argc) && !show_version_only) 1454 usage(); 1455 device_name = argv[optind++]; 1456 1457 if (!quiet || show_version_only) 1458 fprintf (stderr, "mke2fs %s (%s)\n", E2FSPROGS_VERSION, 1459 E2FSPROGS_DATE); 1460 1461 if (show_version_only) { 1462 fprintf(stderr, _("\tUsing %s\n"), 1463 error_message(EXT2_ET_BASE)); 1464 exit(0); 1465 } 1466 1467 /* 1468 * If there's no blocksize specified and there is a journal 1469 * device, use it to figure out the blocksize 1470 */ 1471 if (blocksize <= 0 && journal_device) { 1472 ext2_filsys jfs; 1473 io_manager io_ptr; 1474 1475#ifdef CONFIG_TESTIO_DEBUG 1476 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) { 1477 io_ptr = test_io_manager; 1478 test_io_backing_manager = unix_io_manager; 1479 } else 1480#endif 1481 io_ptr = unix_io_manager; 1482 retval = ext2fs_open(journal_device, 1483 EXT2_FLAG_JOURNAL_DEV_OK, 0, 1484 0, io_ptr, &jfs); 1485 if (retval) { 1486 com_err(program_name, retval, 1487 _("while trying to open journal device %s\n"), 1488 journal_device); 1489 exit(1); 1490 } 1491 if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) { 1492 com_err(program_name, 0, 1493 _("Journal dev blocksize (%d) smaller than " 1494 "minimum blocksize %d\n"), jfs->blocksize, 1495 -blocksize); 1496 exit(1); 1497 } 1498 blocksize = jfs->blocksize; 1499 printf(_("Using journal device's blocksize: %d\n"), blocksize); 1500 fs_param.s_log_block_size = 1501 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE); 1502 ext2fs_close(jfs); 1503 } 1504 1505 if (blocksize > sys_page_size) { 1506 if (!force) { 1507 com_err(program_name, 0, 1508 _("%d-byte blocks too big for system (max %d)"), 1509 blocksize, sys_page_size); 1510 proceed_question(); 1511 } 1512 fprintf(stderr, _("Warning: %d-byte blocks too big for system " 1513 "(max %d), forced to continue\n"), 1514 blocksize, sys_page_size); 1515 } 1516 if (optind < argc) { 1517 fs_param.s_blocks_count = parse_num_blocks(argv[optind++], 1518 fs_param.s_log_block_size); 1519 if (!fs_param.s_blocks_count) { 1520 com_err(program_name, 0, 1521 _("invalid blocks count '%s' on device '%s'"), 1522 argv[optind - 1], device_name); 1523 exit(1); 1524 } 1525 } 1526 if (optind < argc) 1527 usage(); 1528 1529 if (!force) 1530 check_plausibility(device_name); 1531 check_mount(device_name, force, _("filesystem")); 1532 1533 fs_param.s_log_frag_size = fs_param.s_log_block_size; 1534 1535 if (noaction && fs_param.s_blocks_count) { 1536 dev_size = fs_param.s_blocks_count; 1537 retval = 0; 1538 } else { 1539 retry: 1540 retval = ext2fs_get_device_size(device_name, 1541 EXT2_BLOCK_SIZE(&fs_param), 1542 &dev_size); 1543 if ((retval == EFBIG) && 1544 (blocksize == 0) && 1545 (fs_param.s_log_block_size == 0)) { 1546 fs_param.s_log_block_size = 2; 1547 blocksize = 4096; 1548 goto retry; 1549 } 1550 } 1551 1552 if (retval == EFBIG) { 1553 blk64_t big_dev_size; 1554 1555 if (blocksize < 4096) { 1556 fs_param.s_log_block_size = 2; 1557 blocksize = 4096; 1558 } 1559 retval = ext2fs_get_device_size2(device_name, 1560 EXT2_BLOCK_SIZE(&fs_param), &big_dev_size); 1561 if (retval) 1562 goto get_size_failure; 1563 if (big_dev_size == (1ULL << 32)) { 1564 dev_size = (blk_t) (big_dev_size - 1); 1565 goto got_size; 1566 } 1567 fprintf(stderr, _("%s: Size of device %s too big " 1568 "to be expressed in 32 bits\n\t" 1569 "using a blocksize of %d.\n"), 1570 program_name, device_name, EXT2_BLOCK_SIZE(&fs_param)); 1571 exit(1); 1572 } 1573get_size_failure: 1574 if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) { 1575 com_err(program_name, retval, 1576 _("while trying to determine filesystem size")); 1577 exit(1); 1578 } 1579got_size: 1580 if (!fs_param.s_blocks_count) { 1581 if (retval == EXT2_ET_UNIMPLEMENTED) { 1582 com_err(program_name, 0, 1583 _("Couldn't determine device size; you " 1584 "must specify\nthe size of the " 1585 "filesystem\n")); 1586 exit(1); 1587 } else { 1588 if (dev_size == 0) { 1589 com_err(program_name, 0, 1590 _("Device size reported to be zero. " 1591 "Invalid partition specified, or\n\t" 1592 "partition table wasn't reread " 1593 "after running fdisk, due to\n\t" 1594 "a modified partition being busy " 1595 "and in use. You may need to reboot\n\t" 1596 "to re-read your partition table.\n" 1597 )); 1598 exit(1); 1599 } 1600 fs_param.s_blocks_count = dev_size; 1601 if (sys_page_size > EXT2_BLOCK_SIZE(&fs_param)) 1602 fs_param.s_blocks_count &= ~((sys_page_size / 1603 EXT2_BLOCK_SIZE(&fs_param))-1); 1604 } 1605 1606 } else if (!force && (fs_param.s_blocks_count > dev_size)) { 1607 com_err(program_name, 0, 1608 _("Filesystem larger than apparent device size.")); 1609 proceed_question(); 1610 } 1611 1612 fs_types = parse_fs_type(fs_type, usage_types, &fs_param, argv[0]); 1613 if (!fs_types) { 1614 fprintf(stderr, _("Failed to parse fs types list\n")); 1615 exit(1); 1616 } 1617 1618 /* Figure out what features should be enabled */ 1619 1620 tmp = NULL; 1621 if (fs_param.s_rev_level != EXT2_GOOD_OLD_REV) { 1622 tmp = get_string_from_profile(fs_types, "base_features", 1623 "sparse_super,filetype,resize_inode,dir_index"); 1624 edit_feature(tmp, &fs_param.s_feature_compat); 1625 free(tmp); 1626 1627 for (cpp = fs_types; *cpp; cpp++) { 1628 tmp = NULL; 1629 profile_get_string(profile, "fs_types", *cpp, 1630 "features", "", &tmp); 1631 if (tmp && *tmp) 1632 edit_feature(tmp, &fs_param.s_feature_compat); 1633 free(tmp); 1634 } 1635 tmp = get_string_from_profile(fs_types, "default_features", 1636 ""); 1637 } 1638 edit_feature(fs_features ? fs_features : tmp, 1639 &fs_param.s_feature_compat); 1640 free(tmp); 1641 1642 if (fs_param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { 1643 fs_types[0] = strdup("journal"); 1644 fs_types[1] = 0; 1645 } 1646 1647 if (verbose) { 1648 fputs(_("fs_types for mke2fs.conf resolution: "), stdout); 1649 print_str_list(fs_types); 1650 } 1651 1652 if (r_opt == EXT2_GOOD_OLD_REV && 1653 (fs_param.s_feature_compat || fs_param.s_feature_incompat || 1654 fs_param.s_feature_ro_compat)) { 1655 fprintf(stderr, _("Filesystem features not supported " 1656 "with revision 0 filesystems\n")); 1657 exit(1); 1658 } 1659 1660 if (s_opt > 0) { 1661 if (r_opt == EXT2_GOOD_OLD_REV) { 1662 fprintf(stderr, _("Sparse superblocks not supported " 1663 "with revision 0 filesystems\n")); 1664 exit(1); 1665 } 1666 fs_param.s_feature_ro_compat |= 1667 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 1668 } else if (s_opt == 0) 1669 fs_param.s_feature_ro_compat &= 1670 ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; 1671 1672 if (journal_size != 0) { 1673 if (r_opt == EXT2_GOOD_OLD_REV) { 1674 fprintf(stderr, _("Journals not supported " 1675 "with revision 0 filesystems\n")); 1676 exit(1); 1677 } 1678 fs_param.s_feature_compat |= 1679 EXT3_FEATURE_COMPAT_HAS_JOURNAL; 1680 } 1681 1682 if (fs_param.s_feature_incompat & 1683 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { 1684 reserved_ratio = 0; 1685 fs_param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV; 1686 fs_param.s_feature_compat = 0; 1687 fs_param.s_feature_ro_compat = 0; 1688 } 1689 1690 if ((fs_param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) && 1691 (fs_param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE)) { 1692 fprintf(stderr, _("The resize_inode and meta_bg features " 1693 "are not compatible.\n" 1694 "They can not be both enabled " 1695 "simultaneously.\n")); 1696 exit(1); 1697 } 1698 1699 /* Set first meta blockgroup via an environment variable */ 1700 /* (this is mostly for debugging purposes) */ 1701 if ((fs_param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) && 1702 ((tmp = getenv("MKE2FS_FIRST_META_BG")))) 1703 fs_param.s_first_meta_bg = atoi(tmp); 1704 1705 /* Get the hardware sector sizes, if available */ 1706 retval = ext2fs_get_device_sectsize(device_name, &lsector_size); 1707 if (retval) { 1708 com_err(program_name, retval, 1709 _("while trying to determine hardware sector size")); 1710 exit(1); 1711 } 1712 retval = ext2fs_get_device_phys_sectsize(device_name, &psector_size); 1713 if (retval) { 1714 com_err(program_name, retval, 1715 _("while trying to determine physical sector size")); 1716 exit(1); 1717 } 1718 1719 if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL) 1720 lsector_size = atoi(tmp); 1721 if ((tmp = getenv("MKE2FS_DEVICE_PHYS_SECTSIZE")) != NULL) 1722 psector_size = atoi(tmp); 1723 1724 /* Older kernels may not have physical/logical distinction */ 1725 if (!psector_size) 1726 psector_size = lsector_size; 1727 1728 if (blocksize <= 0) { 1729 use_bsize = get_int_from_profile(fs_types, "blocksize", 4096); 1730 1731 if (use_bsize == -1) { 1732 use_bsize = sys_page_size; 1733 if ((linux_version_code < (2*65536 + 6*256)) && 1734 (use_bsize > 4096)) 1735 use_bsize = 4096; 1736 } 1737 if (lsector_size && use_bsize < lsector_size) 1738 use_bsize = lsector_size; 1739 if ((blocksize < 0) && (use_bsize < (-blocksize))) 1740 use_bsize = -blocksize; 1741 blocksize = use_bsize; 1742 fs_param.s_blocks_count /= blocksize / 1024; 1743 } else { 1744 if (blocksize < lsector_size) { /* Impossible */ 1745 com_err(program_name, EINVAL, 1746 _("while setting blocksize; too small " 1747 "for device\n")); 1748 exit(1); 1749 } else if ((blocksize < psector_size) && 1750 (psector_size <= sys_page_size)) { /* Suboptimal */ 1751 fprintf(stderr, _("Warning: specified blocksize %d is " 1752 "less than device physical sectorsize %d\n"), 1753 blocksize, psector_size); 1754 } 1755 } 1756 1757 if (inode_ratio == 0) { 1758 inode_ratio = get_int_from_profile(fs_types, "inode_ratio", 1759 8192); 1760 if (inode_ratio < blocksize) 1761 inode_ratio = blocksize; 1762 } 1763 1764 fs_param.s_log_frag_size = fs_param.s_log_block_size = 1765 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE); 1766 1767#ifdef HAVE_BLKID_PROBE_GET_TOPOLOGY 1768 retval = get_device_geometry(device_name, &fs_param, psector_size); 1769 if (retval < 0) { 1770 fprintf(stderr, 1771 _("warning: Unable to get device geometry for %s\n"), 1772 device_name); 1773 } else if (retval) { 1774 printf(_("%s alignment is offset by %lu bytes.\n"), 1775 device_name, retval); 1776 printf(_("This may result in very poor performance, " 1777 "(re)-partitioning suggested.\n")); 1778 } 1779#endif 1780 1781 blocksize = EXT2_BLOCK_SIZE(&fs_param); 1782 1783 lazy_itable_init = 0; 1784 if (access("/sys/fs/ext4/features/lazy_itable_init", R_OK) == 0) 1785 lazy_itable_init = 1; 1786 1787 lazy_itable_init = get_bool_from_profile(fs_types, 1788 "lazy_itable_init", 1789 lazy_itable_init); 1790 discard = get_bool_from_profile(fs_types, "discard" , discard); 1791 1792 /* Get options from profile */ 1793 for (cpp = fs_types; *cpp; cpp++) { 1794 tmp = NULL; 1795 profile_get_string(profile, "fs_types", *cpp, "options", "", &tmp); 1796 if (tmp && *tmp) 1797 parse_extended_opts(&fs_param, tmp); 1798 free(tmp); 1799 } 1800 1801 if (extended_opts) 1802 parse_extended_opts(&fs_param, extended_opts); 1803 1804 /* Since sparse_super is the default, we would only have a problem 1805 * here if it was explicitly disabled. 1806 */ 1807 if ((fs_param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) && 1808 !(fs_param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) { 1809 com_err(program_name, 0, 1810 _("reserved online resize blocks not supported " 1811 "on non-sparse filesystem")); 1812 exit(1); 1813 } 1814 1815 if (fs_param.s_blocks_per_group) { 1816 if (fs_param.s_blocks_per_group < 256 || 1817 fs_param.s_blocks_per_group > 8 * (unsigned) blocksize) { 1818 com_err(program_name, 0, 1819 _("blocks per group count out of range")); 1820 exit(1); 1821 } 1822 } 1823 1824 if (inode_size == 0) 1825 inode_size = get_int_from_profile(fs_types, "inode_size", 0); 1826 if (!flex_bg_size && (fs_param.s_feature_incompat & 1827 EXT4_FEATURE_INCOMPAT_FLEX_BG)) 1828 flex_bg_size = get_int_from_profile(fs_types, 1829 "flex_bg_size", 16); 1830 if (flex_bg_size) { 1831 if (!(fs_param.s_feature_incompat & 1832 EXT4_FEATURE_INCOMPAT_FLEX_BG)) { 1833 com_err(program_name, 0, 1834 _("Flex_bg feature not enabled, so " 1835 "flex_bg size may not be specified")); 1836 exit(1); 1837 } 1838 fs_param.s_log_groups_per_flex = int_log2(flex_bg_size); 1839 } 1840 1841 if (inode_size && fs_param.s_rev_level >= EXT2_DYNAMIC_REV) { 1842 if (inode_size < EXT2_GOOD_OLD_INODE_SIZE || 1843 inode_size > EXT2_BLOCK_SIZE(&fs_param) || 1844 inode_size & (inode_size - 1)) { 1845 com_err(program_name, 0, 1846 _("invalid inode size %d (min %d/max %d)"), 1847 inode_size, EXT2_GOOD_OLD_INODE_SIZE, 1848 blocksize); 1849 exit(1); 1850 } 1851 fs_param.s_inode_size = inode_size; 1852 } 1853 1854 /* Make sure number of inodes specified will fit in 32 bits */ 1855 if (num_inodes == 0) { 1856 unsigned long long n; 1857 n = (unsigned long long) fs_param.s_blocks_count * blocksize / inode_ratio; 1858 if (n > ~0U) { 1859 com_err(program_name, 0, 1860 _("too many inodes (%llu), raise inode ratio?"), n); 1861 exit(1); 1862 } 1863 } else if (num_inodes > ~0U) { 1864 com_err(program_name, 0, 1865 _("too many inodes (%llu), specify < 2^32 inodes"), 1866 num_inodes); 1867 exit(1); 1868 } 1869 /* 1870 * Calculate number of inodes based on the inode ratio 1871 */ 1872 fs_param.s_inodes_count = num_inodes ? num_inodes : 1873 ((__u64) fs_param.s_blocks_count * blocksize) 1874 / inode_ratio; 1875 1876 if ((((long long)fs_param.s_inodes_count) * 1877 (inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE)) >= 1878 (((long long)fs_param.s_blocks_count) * 1879 EXT2_BLOCK_SIZE(&fs_param))) { 1880 com_err(program_name, 0, _("inode_size (%u) * inodes_count " 1881 "(%u) too big for a\n\t" 1882 "filesystem with %lu blocks, " 1883 "specify higher inode_ratio (-i)\n\t" 1884 "or lower inode count (-N).\n"), 1885 inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE, 1886 fs_param.s_inodes_count, 1887 (unsigned long) fs_param.s_blocks_count); 1888 exit(1); 1889 } 1890 1891 /* 1892 * Calculate number of blocks to reserve 1893 */ 1894 fs_param.s_r_blocks_count = (unsigned int) (reserved_ratio * 1895 fs_param.s_blocks_count / 100.0); 1896} 1897 1898static int should_do_undo(const char *name) 1899{ 1900 errcode_t retval; 1901 io_channel channel; 1902 __u16 s_magic; 1903 struct ext2_super_block super; 1904 io_manager manager = unix_io_manager; 1905 int csum_flag, force_undo; 1906 1907 csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(&fs_param, 1908 EXT4_FEATURE_RO_COMPAT_GDT_CSUM); 1909 force_undo = get_int_from_profile(fs_types, "force_undo", 0); 1910 if (!force_undo && (!csum_flag || !lazy_itable_init)) 1911 return 0; 1912 1913 retval = manager->open(name, IO_FLAG_EXCLUSIVE, &channel); 1914 if (retval) { 1915 /* 1916 * We don't handle error cases instead we 1917 * declare that the file system doesn't exist 1918 * and let the rest of mke2fs take care of 1919 * error 1920 */ 1921 retval = 0; 1922 goto open_err_out; 1923 } 1924 1925 io_channel_set_blksize(channel, SUPERBLOCK_OFFSET); 1926 retval = io_channel_read_blk(channel, 1, -SUPERBLOCK_SIZE, &super); 1927 if (retval) { 1928 retval = 0; 1929 goto err_out; 1930 } 1931 1932#if defined(WORDS_BIGENDIAN) 1933 s_magic = ext2fs_swab16(super.s_magic); 1934#else 1935 s_magic = super.s_magic; 1936#endif 1937 1938 if (s_magic == EXT2_SUPER_MAGIC) 1939 retval = 1; 1940 1941err_out: 1942 io_channel_close(channel); 1943 1944open_err_out: 1945 1946 return retval; 1947} 1948 1949static int mke2fs_setup_tdb(const char *name, io_manager *io_ptr) 1950{ 1951 errcode_t retval = 0; 1952 char *tdb_dir, *tdb_file; 1953 char *device_name, *tmp_name; 1954 1955 /* 1956 * Configuration via a conf file would be 1957 * nice 1958 */ 1959 tdb_dir = getenv("E2FSPROGS_UNDO_DIR"); 1960 if (!tdb_dir) 1961 profile_get_string(profile, "defaults", 1962 "undo_dir", 0, "/var/lib/e2fsprogs", 1963 &tdb_dir); 1964 1965 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) || 1966 access(tdb_dir, W_OK)) 1967 return 0; 1968 1969 tmp_name = strdup(name); 1970 if (!tmp_name) { 1971 alloc_fn_fail: 1972 com_err(program_name, ENOMEM, 1973 _("Couldn't allocate memory for tdb filename\n")); 1974 return ENOMEM; 1975 } 1976 device_name = basename(tmp_name); 1977 tdb_file = malloc(strlen(tdb_dir) + 8 + strlen(device_name) + 7 + 1); 1978 if (!tdb_file) 1979 goto alloc_fn_fail; 1980 sprintf(tdb_file, "%s/mke2fs-%s.e2undo", tdb_dir, device_name); 1981 1982 if (!access(tdb_file, F_OK)) { 1983 if (unlink(tdb_file) < 0) { 1984 retval = errno; 1985 com_err(program_name, retval, 1986 _("while trying to delete %s"), 1987 tdb_file); 1988 free(tdb_file); 1989 return retval; 1990 } 1991 } 1992 1993 set_undo_io_backing_manager(*io_ptr); 1994 *io_ptr = undo_io_manager; 1995 set_undo_io_backup_file(tdb_file); 1996 printf(_("Overwriting existing filesystem; this can be undone " 1997 "using the command:\n" 1998 " e2undo %s %s\n\n"), tdb_file, name); 1999 2000 free(tdb_file); 2001 free(tmp_name); 2002 return retval; 2003} 2004 2005#ifdef __linux__ 2006 2007#ifndef BLKDISCARD 2008#define BLKDISCARD _IO(0x12,119) 2009#endif 2010 2011#ifndef BLKDISCARDZEROES 2012#define BLKDISCARDZEROES _IO(0x12,124) 2013#endif 2014 2015/* 2016 * Return zero if the discard succeeds, and -1 if the discard fails. 2017 */ 2018static int mke2fs_discard_blocks(ext2_filsys fs) 2019{ 2020 int fd; 2021 int ret; 2022 int blocksize; 2023 __u64 blocks; 2024 __uint64_t range[2]; 2025 2026 blocks = fs->super->s_blocks_count; 2027 blocksize = EXT2_BLOCK_SIZE(fs->super); 2028 range[0] = 0; 2029 range[1] = blocks * blocksize; 2030 2031 fd = open64(fs->device_name, O_RDWR); 2032 2033 if (fd > 0) { 2034 ret = ioctl(fd, BLKDISCARD, &range); 2035 if (verbose) { 2036 printf(_("Calling BLKDISCARD from %llu to %llu "), 2037 (unsigned long long) range[0], 2038 (unsigned long long) range[1]); 2039 if (ret) 2040 printf(_("failed.\n")); 2041 else 2042 printf(_("succeeded.\n")); 2043 } 2044 close(fd); 2045 } 2046 return ret; 2047} 2048 2049static int mke2fs_discard_zeroes_data(ext2_filsys fs) 2050{ 2051 int fd; 2052 int ret; 2053 int discard_zeroes_data = 0; 2054 2055 fd = open64(fs->device_name, O_RDWR); 2056 2057 if (fd > 0) { 2058 ioctl(fd, BLKDISCARDZEROES, &discard_zeroes_data); 2059 close(fd); 2060 } 2061 return discard_zeroes_data; 2062} 2063#else 2064#define mke2fs_discard_blocks(fs) 1 2065#define mke2fs_discard_zeroes_data(fs) 0 2066#endif 2067 2068int main (int argc, char *argv[]) 2069{ 2070 errcode_t retval = 0; 2071 ext2_filsys fs; 2072 badblocks_list bb_list = 0; 2073 unsigned int journal_blocks; 2074 unsigned int i; 2075 int val, hash_alg; 2076 io_manager io_ptr; 2077 char tdb_string[40]; 2078 char *hash_alg_str; 2079 int itable_zeroed = 0; 2080 2081#ifdef ENABLE_NLS 2082 setlocale(LC_MESSAGES, ""); 2083 setlocale(LC_CTYPE, ""); 2084 bindtextdomain(NLS_CAT_NAME, LOCALEDIR); 2085 textdomain(NLS_CAT_NAME); 2086#endif 2087 PRS(argc, argv); 2088 2089#ifdef CONFIG_TESTIO_DEBUG 2090 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) { 2091 io_ptr = test_io_manager; 2092 test_io_backing_manager = unix_io_manager; 2093 } else 2094#endif 2095 io_ptr = unix_io_manager; 2096 2097 if (should_do_undo(device_name)) { 2098 retval = mke2fs_setup_tdb(device_name, &io_ptr); 2099 if (retval) 2100 exit(1); 2101 } 2102 2103 /* 2104 * Initialize the superblock.... 2105 */ 2106 retval = ext2fs_initialize(device_name, EXT2_FLAG_EXCLUSIVE, &fs_param, 2107 io_ptr, &fs); 2108 if (retval) { 2109 com_err(device_name, retval, _("while setting up superblock")); 2110 exit(1); 2111 } 2112 2113 /* Can't undo discard ... */ 2114 if (discard && (io_ptr != undo_io_manager)) { 2115 retval = mke2fs_discard_blocks(fs); 2116 2117 if (!retval && mke2fs_discard_zeroes_data(fs)) { 2118 if (verbose) 2119 printf(_("Discard succeeded and will return 0s " 2120 " - skipping inode table wipe\n")); 2121 lazy_itable_init = 1; 2122 itable_zeroed = 1; 2123 } 2124 } 2125 2126 sprintf(tdb_string, "tdb_data_size=%d", fs->blocksize <= 4096 ? 2127 32768 : fs->blocksize * 8); 2128 io_channel_set_options(fs->io, tdb_string); 2129 2130 if (fs_param.s_flags & EXT2_FLAGS_TEST_FILESYS) 2131 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS; 2132 2133 if ((fs_param.s_feature_incompat & 2134 (EXT3_FEATURE_INCOMPAT_EXTENTS|EXT4_FEATURE_INCOMPAT_FLEX_BG)) || 2135 (fs_param.s_feature_ro_compat & 2136 (EXT4_FEATURE_RO_COMPAT_HUGE_FILE|EXT4_FEATURE_RO_COMPAT_GDT_CSUM| 2137 EXT4_FEATURE_RO_COMPAT_DIR_NLINK| 2138 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE))) 2139 fs->super->s_kbytes_written = 1; 2140 2141 /* 2142 * Wipe out the old on-disk superblock 2143 */ 2144 if (!noaction) 2145 zap_sector(fs, 2, 6); 2146 2147 /* 2148 * Parse or generate a UUID for the filesystem 2149 */ 2150 if (fs_uuid) { 2151 if (uuid_parse(fs_uuid, fs->super->s_uuid) !=0) { 2152 com_err(device_name, 0, "could not parse UUID: %s\n", 2153 fs_uuid); 2154 exit(1); 2155 } 2156 } else 2157 uuid_generate(fs->super->s_uuid); 2158 2159 /* 2160 * Initialize the directory index variables 2161 */ 2162 hash_alg_str = get_string_from_profile(fs_types, "hash_alg", 2163 "half_md4"); 2164 hash_alg = e2p_string2hash(hash_alg_str); 2165 fs->super->s_def_hash_version = (hash_alg >= 0) ? hash_alg : 2166 EXT2_HASH_HALF_MD4; 2167 uuid_generate((unsigned char *) fs->super->s_hash_seed); 2168 2169 /* 2170 * Add "jitter" to the superblock's check interval so that we 2171 * don't check all the filesystems at the same time. We use a 2172 * kludgy hack of using the UUID to derive a random jitter value. 2173 */ 2174 for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++) 2175 val += fs->super->s_uuid[i]; 2176 fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT; 2177 2178 /* 2179 * Override the creator OS, if applicable 2180 */ 2181 if (creator_os && !set_os(fs->super, creator_os)) { 2182 com_err (program_name, 0, _("unknown os - %s"), creator_os); 2183 exit(1); 2184 } 2185 2186 /* 2187 * For the Hurd, we will turn off filetype since it doesn't 2188 * support it. 2189 */ 2190 if (fs->super->s_creator_os == EXT2_OS_HURD) 2191 fs->super->s_feature_incompat &= 2192 ~EXT2_FEATURE_INCOMPAT_FILETYPE; 2193 2194 /* 2195 * Set the volume label... 2196 */ 2197 if (volume_label) { 2198 memset(fs->super->s_volume_name, 0, 2199 sizeof(fs->super->s_volume_name)); 2200 strncpy(fs->super->s_volume_name, volume_label, 2201 sizeof(fs->super->s_volume_name)); 2202 } 2203 2204 /* 2205 * Set the last mount directory 2206 */ 2207 if (mount_dir) { 2208 memset(fs->super->s_last_mounted, 0, 2209 sizeof(fs->super->s_last_mounted)); 2210 strncpy(fs->super->s_last_mounted, mount_dir, 2211 sizeof(fs->super->s_last_mounted)); 2212 } 2213 2214 if (!quiet || noaction) 2215 show_stats(fs); 2216 2217 if (noaction) 2218 exit(0); 2219 2220 if (fs->super->s_feature_incompat & 2221 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { 2222 create_journal_dev(fs); 2223 exit(ext2fs_close(fs) ? 1 : 0); 2224 } 2225 2226 if (bad_blocks_filename) 2227 read_bb_file(fs, &bb_list, bad_blocks_filename); 2228 if (cflag) 2229 test_disk(fs, &bb_list); 2230 2231 handle_bad_blocks(fs, bb_list); 2232 fs->stride = fs_stride = fs->super->s_raid_stride; 2233 retval = ext2fs_allocate_tables(fs); 2234 if (retval) { 2235 com_err(program_name, retval, 2236 _("while trying to allocate filesystem tables")); 2237 exit(1); 2238 } 2239 if (super_only) { 2240 fs->super->s_state |= EXT2_ERROR_FS; 2241 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY); 2242 } else { 2243 /* rsv must be a power of two (64kB is MD RAID sb alignment) */ 2244 unsigned int rsv = 65536 / fs->blocksize; 2245 unsigned long blocks = fs->super->s_blocks_count; 2246 unsigned long start; 2247 blk_t ret_blk; 2248 2249#ifdef ZAP_BOOTBLOCK 2250 zap_sector(fs, 0, 2); 2251#endif 2252 2253 /* 2254 * Wipe out any old MD RAID (or other) metadata at the end 2255 * of the device. This will also verify that the device is 2256 * as large as we think. Be careful with very small devices. 2257 */ 2258 start = (blocks & ~(rsv - 1)); 2259 if (start > rsv) 2260 start -= rsv; 2261 if (start > 0) 2262 retval = ext2fs_zero_blocks(fs, start, blocks - start, 2263 &ret_blk, NULL); 2264 2265 if (retval) { 2266 com_err(program_name, retval, 2267 _("while zeroing block %u at end of filesystem"), 2268 ret_blk); 2269 } 2270 write_inode_tables(fs, lazy_itable_init, itable_zeroed); 2271 create_root_dir(fs); 2272 create_lost_and_found(fs); 2273 reserve_inodes(fs); 2274 create_bad_block_inode(fs, bb_list); 2275 if (fs->super->s_feature_compat & 2276 EXT2_FEATURE_COMPAT_RESIZE_INODE) { 2277 retval = ext2fs_create_resize_inode(fs); 2278 if (retval) { 2279 com_err("ext2fs_create_resize_inode", retval, 2280 _("while reserving blocks for online resize")); 2281 exit(1); 2282 } 2283 } 2284 } 2285 2286 if (journal_device) { 2287 ext2_filsys jfs; 2288 2289 if (!force) 2290 check_plausibility(journal_device); 2291 check_mount(journal_device, force, _("journal")); 2292 2293 retval = ext2fs_open(journal_device, EXT2_FLAG_RW| 2294 EXT2_FLAG_JOURNAL_DEV_OK, 0, 2295 fs->blocksize, unix_io_manager, &jfs); 2296 if (retval) { 2297 com_err(program_name, retval, 2298 _("while trying to open journal device %s\n"), 2299 journal_device); 2300 exit(1); 2301 } 2302 if (!quiet) { 2303 printf(_("Adding journal to device %s: "), 2304 journal_device); 2305 fflush(stdout); 2306 } 2307 retval = ext2fs_add_journal_device(fs, jfs); 2308 if(retval) { 2309 com_err (program_name, retval, 2310 _("\n\twhile trying to add journal to device %s"), 2311 journal_device); 2312 exit(1); 2313 } 2314 if (!quiet) 2315 printf(_("done\n")); 2316 ext2fs_close(jfs); 2317 free(journal_device); 2318 } else if ((journal_size) || 2319 (fs_param.s_feature_compat & 2320 EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { 2321 journal_blocks = figure_journal_size(journal_size, fs); 2322 2323 if (super_only) { 2324 printf(_("Skipping journal creation in super-only mode\n")); 2325 fs->super->s_journal_inum = EXT2_JOURNAL_INO; 2326 goto no_journal; 2327 } 2328 2329 if (!journal_blocks) { 2330 fs->super->s_feature_compat &= 2331 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; 2332 goto no_journal; 2333 } 2334 if (!quiet) { 2335 printf(_("Creating journal (%u blocks): "), 2336 journal_blocks); 2337 fflush(stdout); 2338 } 2339 retval = ext2fs_add_journal_inode(fs, journal_blocks, 2340 journal_flags); 2341 if (retval) { 2342 com_err (program_name, retval, 2343 _("\n\twhile trying to create journal")); 2344 exit(1); 2345 } 2346 if (!quiet) 2347 printf(_("done\n")); 2348 } 2349no_journal: 2350 2351 if (!quiet) 2352 printf(_("Writing superblocks and " 2353 "filesystem accounting information: ")); 2354 retval = ext2fs_flush(fs); 2355 if (retval) { 2356 fprintf(stderr, 2357 _("\nWarning, had trouble writing out superblocks.")); 2358 } 2359 if (!quiet) { 2360 printf(_("done\n\n")); 2361 if (!getenv("MKE2FS_SKIP_CHECK_MSG")) 2362 print_check_message(fs); 2363 } 2364 val = ext2fs_close(fs); 2365 remove_error_table(&et_ext2_error_table); 2366 remove_error_table(&et_prof_error_table); 2367 profile_release(profile); 2368 return (retval || val) ? 1 : 0; 2369} 2370