2 * mke2fs.c - Make a ext2fs filesystem.
4 * Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
5 * 2003, 2004, 2005 by Theodore Ts'o.
8 * This file may be redistributed under the terms of the GNU Public
13 /* Usage: mke2fs [options] device
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 :-).
19 #define _XOPEN_SOURCE 600
42 #ifdef HAVE_SYS_IOCTL_H
43 #include <sys/ioctl.h>
47 #include <blkid/blkid.h>
49 #include "ext2fs/ext2_fs.h"
50 #include "ext2fs/ext2fsP.h"
51 #include "uuid/uuid.h"
53 #include "support/nls-enable.h"
54 #include "support/plausible.h"
55 #include "support/profile.h"
56 #include "support/prof_err.h"
57 #include "../version.h"
58 #include "support/quotaio.h"
60 #include "create_inode.h"
62 #define STRIDE_LENGTH 8
64 #define MAX_32_NUM ((((unsigned long long) 1) << 32) - 1)
70 #define DISCARD_STEP_MB (2048)
72 extern int isatty(int);
73 extern FILE *fpopen(const char *cmd, const char *mode);
75 const char * program_name = "mke2fs";
76 static const char * device_name /* = NULL */;
78 /* Command line options */
82 static int super_only;
83 static int discard = 1; /* attempt to discard device before fs creation */
87 static int num_backups = 2; /* number of backup bg's for sparse_super2 */
88 static uid_t root_uid;
89 static gid_t root_gid;
92 static int lazy_itable_init;
93 static int packed_meta_blocks;
95 static char *bad_blocks_filename = NULL;
96 static __u32 fs_stride;
97 /* Initialize usr/grp quotas by default */
98 static unsigned int quotatype_bits = (QUOTA_USR_BIT | QUOTA_GRP_BIT);
100 static blk64_t journal_location = ~0LL;
101 static int proceed_delay = -1;
102 static blk64_t dev_size;
104 static struct ext2_super_block fs_param;
105 static __u32 zero_buf[4];
106 static char *fs_uuid = NULL;
107 static char *creator_os;
108 static char *volume_label;
109 static char *mount_dir;
110 char *journal_device;
111 static int sync_kludge; /* Set using the MKE2FS_SYNC env. option */
113 const char *src_root_dir; /* Copy files from the specified directory */
114 static char *undo_file;
116 static int android_sparse_file; /* -E android_sparse */
118 static profile_t profile;
120 static int sys_page_size = 4096;
122 static int errors_behavior = 0;
124 static void usage(void)
126 fprintf(stderr, _("Usage: %s [-c|-l filename] [-b block-size] "
127 "[-C cluster-size]\n\t[-i bytes-per-inode] [-I inode-size] "
128 "[-J journal-options]\n"
129 "\t[-G flex-group-size] [-N number-of-inodes] "
130 "[-d root-directory]\n"
131 "\t[-m reserved-blocks-percentage] [-o creator-os]\n"
132 "\t[-g blocks-per-group] [-L volume-label] "
133 "[-M last-mounted-directory]\n\t[-O feature[,...]] "
134 "[-r fs-revision] [-E extended-option[,...]]\n"
135 "\t[-t fs-type] [-T usage-type ] [-U UUID] [-e errors_behavior]"
137 "\t[-jnqvDFSV] device [blocks-count]\n"),
142 static int int_log2(unsigned long long arg)
154 int int_log10(unsigned long long arg)
164 * Helper function for read_bb_file and test_disk
166 static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk)
168 fprintf(stderr, _("Bad block %u out of range; ignored.\n"), blk);
173 * Reads the bad blocks list from a file
175 static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
176 const char *bad_blocks_file)
181 f = fopen(bad_blocks_file, "r");
183 com_err("read_bad_blocks_file", errno,
184 _("while trying to open %s"), bad_blocks_file);
187 retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
190 com_err("ext2fs_read_bb_FILE", retval, "%s",
191 _("while reading in list of bad blocks from file"));
197 * Runs the badblocks program to test the disk
199 static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
205 sprintf(buf, "badblocks -b %d -X %s%s%s %llu", fs->blocksize,
206 quiet ? "" : "-s ", (cflag > 1) ? "-w " : "",
207 fs->device_name, ext2fs_blocks_count(fs->super)-1);
209 printf(_("Running command: %s\n"), buf);
212 com_err("popen", errno,
213 _("while trying to run '%s'"), buf);
216 retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
219 com_err("ext2fs_read_bb_FILE", retval, "%s",
220 _("while processing list of bad blocks from program"));
225 static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
229 unsigned must_be_good;
231 badblocks_iterate bb_iter;
241 * The primary superblock and group descriptors *must* be
242 * good; if not, abort.
244 must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
245 for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
246 if (ext2fs_badblocks_list_test(bb_list, i)) {
247 fprintf(stderr, _("Block %d in primary "
248 "superblock/group descriptor area bad.\n"), i);
249 fprintf(stderr, _("Blocks %u through %u must be good "
250 "in order to build a filesystem.\n"),
251 fs->super->s_first_data_block, must_be_good);
252 fputs(_("Aborting....\n"), stderr);
258 * See if any of the bad blocks are showing up in the backup
259 * superblocks and/or group descriptors. If so, issue a
260 * warning and adjust the block counts appropriately.
262 group_block = fs->super->s_first_data_block +
263 fs->super->s_blocks_per_group;
265 for (i = 1; i < fs->group_desc_count; i++) {
267 for (j=0; j < fs->desc_blocks+1; j++) {
268 if (ext2fs_badblocks_list_test(bb_list,
272 _("Warning: the backup superblock/group descriptors at block %u contain\n"
276 group = ext2fs_group_of_blk2(fs, group_block+j);
277 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
278 ext2fs_group_desc_csum_set(fs, group);
279 ext2fs_free_blocks_count_add(fs->super, 1);
282 group_block += fs->super->s_blocks_per_group;
286 * Mark all the bad blocks as used...
288 retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
290 com_err("ext2fs_badblocks_list_iterate_begin", retval, "%s",
291 _("while marking bad blocks as used"));
294 while (ext2fs_badblocks_list_iterate(bb_iter, &blk))
295 ext2fs_mark_block_bitmap2(fs->block_map, EXT2FS_B2C(fs, blk));
296 ext2fs_badblocks_list_iterate_end(bb_iter);
299 static void write_reserved_inodes(ext2_filsys fs)
303 struct ext2_inode *inode;
305 retval = ext2fs_get_memzero(EXT2_INODE_SIZE(fs->super), &inode);
307 com_err("inode_init", retval, _("while allocating memory"));
311 for (ino = 1; ino < EXT2_FIRST_INO(fs->super); ino++) {
312 retval = ext2fs_write_inode_full(fs, ino, inode,
313 EXT2_INODE_SIZE(fs->super));
315 com_err("ext2fs_write_inode_full", retval,
316 _("while writing reserved inodes"));
321 ext2fs_free_mem(&inode);
324 static errcode_t packed_allocate_tables(ext2_filsys fs)
330 for (i = 0; i < fs->group_desc_count; i++) {
331 retval = ext2fs_new_block2(fs, goal, NULL, &goal);
334 ext2fs_block_alloc_stats2(fs, goal, +1);
335 ext2fs_block_bitmap_loc_set(fs, i, goal);
337 for (i = 0; i < fs->group_desc_count; i++) {
338 retval = ext2fs_new_block2(fs, goal, NULL, &goal);
341 ext2fs_block_alloc_stats2(fs, goal, +1);
342 ext2fs_inode_bitmap_loc_set(fs, i, goal);
344 for (i = 0; i < fs->group_desc_count; i++) {
345 blk64_t end = ext2fs_blocks_count(fs->super) - 1;
346 retval = ext2fs_get_free_blocks2(fs, goal, end,
347 fs->inode_blocks_per_group,
348 fs->block_map, &goal);
351 ext2fs_block_alloc_stats_range(fs, goal,
352 fs->inode_blocks_per_group, +1);
353 ext2fs_inode_table_loc_set(fs, i, goal);
354 ext2fs_group_desc_csum_set(fs, i);
359 static void write_inode_tables(ext2_filsys fs, int lazy_flag, int itable_zeroed)
365 struct ext2fs_numeric_progress_struct progress;
367 ext2fs_numeric_progress_init(fs, &progress,
368 _("Writing inode tables: "),
369 fs->group_desc_count);
371 for (i = 0; i < fs->group_desc_count; i++) {
372 ext2fs_numeric_progress_update(fs, &progress, i);
374 blk = ext2fs_inode_table_loc(fs, i);
375 num = fs->inode_blocks_per_group;
378 num = ext2fs_div_ceil((fs->super->s_inodes_per_group -
379 ext2fs_bg_itable_unused(fs, i)) *
380 EXT2_INODE_SIZE(fs->super),
381 EXT2_BLOCK_SIZE(fs->super));
382 if (!lazy_flag || itable_zeroed) {
383 /* The kernel doesn't need to zero the itable blocks */
384 ext2fs_bg_flags_set(fs, i, EXT2_BG_INODE_ZEROED);
385 ext2fs_group_desc_csum_set(fs, i);
387 if (!itable_zeroed) {
388 retval = ext2fs_zero_blocks2(fs, blk, num, &blk, &num);
390 fprintf(stderr, _("\nCould not write %d "
391 "blocks in inode table starting at %llu: %s\n"),
392 num, blk, error_message(retval));
397 if (sync_kludge == 1)
398 io_channel_flush(fs->io);
399 else if ((i % sync_kludge) == 0)
400 io_channel_flush(fs->io);
403 ext2fs_numeric_progress_close(fs, &progress,
406 /* Reserved inodes must always have correct checksums */
407 if (ext2fs_has_feature_metadata_csum(fs->super))
408 write_reserved_inodes(fs);
411 static void create_root_dir(ext2_filsys fs)
414 struct ext2_inode inode;
416 retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
418 com_err("ext2fs_mkdir", retval, "%s",
419 _("while creating root dir"));
422 if (root_uid != 0 || root_gid != 0) {
423 retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
425 com_err("ext2fs_read_inode", retval, "%s",
426 _("while reading root inode"));
430 inode.i_uid = root_uid;
431 ext2fs_set_i_uid_high(inode, root_uid >> 16);
432 inode.i_gid = root_gid;
433 ext2fs_set_i_gid_high(inode, root_gid >> 16);
435 retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
437 com_err("ext2fs_write_inode", retval, "%s",
438 _("while setting root inode ownership"));
444 static void create_lost_and_found(ext2_filsys fs)
446 unsigned int lpf_size = 0;
449 const char *name = "lost+found";
453 retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
455 com_err("ext2fs_mkdir", retval, "%s",
456 _("while creating /lost+found"));
460 retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
462 com_err("ext2_lookup", retval, "%s",
463 _("while looking up /lost+found"));
467 for (i=1; i < EXT2_NDIR_BLOCKS; i++) {
468 /* Ensure that lost+found is at least 2 blocks, so we always
469 * test large empty blocks for big-block filesystems. */
470 if ((lpf_size += fs->blocksize) >= 16*1024 &&
471 lpf_size >= 2 * fs->blocksize)
473 retval = ext2fs_expand_dir(fs, ino);
475 com_err("ext2fs_expand_dir", retval, "%s",
476 _("while expanding /lost+found"));
482 static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
486 ext2fs_mark_inode_bitmap2(fs->inode_map, EXT2_BAD_INO);
487 ext2fs_inode_alloc_stats2(fs, EXT2_BAD_INO, +1, 0);
488 retval = ext2fs_update_bb_inode(fs, bb_list);
490 com_err("ext2fs_update_bb_inode", retval, "%s",
491 _("while setting bad block inode"));
497 static void reserve_inodes(ext2_filsys fs)
501 for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++)
502 ext2fs_inode_alloc_stats2(fs, i, +1, 0);
503 ext2fs_mark_ib_dirty(fs);
506 #define BSD_DISKMAGIC (0x82564557UL) /* The disk magic number */
507 #define BSD_MAGICDISK (0x57455682UL) /* The disk magic number reversed */
508 #define BSD_LABEL_OFFSET 64
510 static void zap_sector(ext2_filsys fs, int sect, int nsect)
516 buf = calloc(512, nsect);
518 printf(_("Out of memory erasing sectors %d-%d\n"),
519 sect, sect + nsect - 1);
524 /* Check for a BSD disklabel, and don't erase it if so */
525 retval = io_channel_read_blk64(fs->io, 0, -512, buf);
528 _("Warning: could not read block 0: %s\n"),
529 error_message(retval));
531 magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
532 if ((*magic == BSD_DISKMAGIC) ||
533 (*magic == BSD_MAGICDISK))
538 memset(buf, 0, 512*nsect);
539 io_channel_set_blksize(fs->io, 512);
540 retval = io_channel_write_blk64(fs->io, sect, -512*nsect, buf);
541 io_channel_set_blksize(fs->io, fs->blocksize);
544 fprintf(stderr, _("Warning: could not erase sector %d: %s\n"),
545 sect, error_message(retval));
548 static void create_journal_dev(ext2_filsys fs)
550 struct ext2fs_numeric_progress_struct progress;
553 blk64_t blk, err_blk;
554 int c, count, err_count;
556 retval = ext2fs_create_journal_superblock(fs,
557 ext2fs_blocks_count(fs->super), 0, &buf);
559 com_err("create_journal_dev", retval, "%s",
560 _("while initializing journal superblock"));
564 if (journal_flags & EXT2_MKJOURNAL_LAZYINIT)
565 goto write_superblock;
567 ext2fs_numeric_progress_init(fs, &progress,
568 _("Zeroing journal device: "),
569 ext2fs_blocks_count(fs->super));
571 count = ext2fs_blocks_count(fs->super);
577 retval = ext2fs_zero_blocks2(fs, blk, c, &err_blk, &err_count);
579 com_err("create_journal_dev", retval,
580 _("while zeroing journal device "
581 "(block %llu, count %d)"),
587 ext2fs_numeric_progress_update(fs, &progress, blk);
590 ext2fs_numeric_progress_close(fs, &progress, NULL);
592 retval = io_channel_write_blk64(fs->io,
593 fs->super->s_first_data_block+1,
595 (void) ext2fs_free_mem(&buf);
597 com_err("create_journal_dev", retval, "%s",
598 _("while writing journal superblock"));
603 static void show_stats(ext2_filsys fs)
605 struct ext2_super_block *s = fs->super;
613 printf(_("Creating filesystem with %llu %dk blocks and "
615 ext2fs_blocks_count(s), fs->blocksize >> 10,
620 if (ext2fs_blocks_count(&fs_param) != ext2fs_blocks_count(s))
621 fprintf(stderr, _("warning: %llu blocks unused.\n\n"),
622 ext2fs_blocks_count(&fs_param) - ext2fs_blocks_count(s));
624 memset(buf, 0, sizeof(buf));
625 strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name));
626 printf(_("Filesystem label=%s\n"), buf);
627 os = e2p_os2string(fs->super->s_creator_os);
629 printf(_("OS type: %s\n"), os);
631 printf(_("Block size=%u (log=%u)\n"), fs->blocksize,
632 s->s_log_block_size);
633 if (ext2fs_has_feature_bigalloc(fs->super))
634 printf(_("Cluster size=%u (log=%u)\n"),
635 fs->blocksize << fs->cluster_ratio_bits,
636 s->s_log_cluster_size);
638 printf(_("Fragment size=%u (log=%u)\n"), EXT2_CLUSTER_SIZE(s),
639 s->s_log_cluster_size);
640 printf(_("Stride=%u blocks, Stripe width=%u blocks\n"),
641 s->s_raid_stride, s->s_raid_stripe_width);
642 printf(_("%u inodes, %llu blocks\n"), s->s_inodes_count,
643 ext2fs_blocks_count(s));
644 printf(_("%llu blocks (%2.2f%%) reserved for the super user\n"),
645 ext2fs_r_blocks_count(s),
646 100.0 * ext2fs_r_blocks_count(s) / ext2fs_blocks_count(s));
647 printf(_("First data block=%u\n"), s->s_first_data_block);
648 if (root_uid != 0 || root_gid != 0)
649 printf(_("Root directory owner=%u:%u\n"), root_uid, root_gid);
650 if (s->s_reserved_gdt_blocks)
651 printf(_("Maximum filesystem blocks=%lu\n"),
652 (s->s_reserved_gdt_blocks + fs->desc_blocks) *
653 EXT2_DESC_PER_BLOCK(s) * s->s_blocks_per_group);
654 if (fs->group_desc_count > 1)
655 printf(_("%u block groups\n"), fs->group_desc_count);
657 printf(_("%u block group\n"), fs->group_desc_count);
658 if (ext2fs_has_feature_bigalloc(fs->super))
659 printf(_("%u blocks per group, %u clusters per group\n"),
660 s->s_blocks_per_group, s->s_clusters_per_group);
662 printf(_("%u blocks per group, %u fragments per group\n"),
663 s->s_blocks_per_group, s->s_clusters_per_group);
664 printf(_("%u inodes per group\n"), s->s_inodes_per_group);
667 if (fs->group_desc_count == 1) {
672 if (!e2p_is_null_uuid(s->s_uuid))
673 printf(_("Filesystem UUID: %s\n"), e2p_uuid2str(s->s_uuid));
674 printf("%s", _("Superblock backups stored on blocks: "));
675 group_block = s->s_first_data_block;
677 for (i = 1; i < fs->group_desc_count; i++) {
678 group_block += s->s_blocks_per_group;
679 if (!ext2fs_bg_has_super(fs, i))
683 need = int_log10(group_block) + 2;
684 if (need > col_left) {
689 printf("%llu", group_block);
695 * Returns true if making a file system for the Hurd, else 0
697 static int for_hurd(const char *os)
707 return (atoi(os) == EXT2_OS_HURD);
708 return (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0);
712 * Set the S_CREATOR_OS field. Return true if OS is known,
715 static int set_os(struct ext2_super_block *sb, char *os)
718 sb->s_creator_os = atoi (os);
719 else if (strcasecmp(os, "linux") == 0)
720 sb->s_creator_os = EXT2_OS_LINUX;
721 else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0)
722 sb->s_creator_os = EXT2_OS_HURD;
723 else if (strcasecmp(os, "freebsd") == 0)
724 sb->s_creator_os = EXT2_OS_FREEBSD;
725 else if (strcasecmp(os, "lites") == 0)
726 sb->s_creator_os = EXT2_OS_LITES;
732 #define PATH_SET "PATH=/sbin"
734 static void parse_extended_opts(struct ext2_super_block *param,
737 char *buf, *token, *next, *p, *arg, *badopt = 0;
742 char *encoding_flags = NULL;
747 fprintf(stderr, "%s",
748 _("Couldn't allocate memory to parse options!\n"));
752 for (token = buf; token && *token; token = next) {
753 p = strchr(token, ',');
759 arg = strchr(token, '=');
764 if (strcmp(token, "desc-size") == 0 ||
765 strcmp(token, "desc_size") == 0) {
768 if (!ext2fs_has_feature_64bit(&fs_param)) {
770 _("%s requires '-O 64bit'\n"), token);
774 if (param->s_reserved_gdt_blocks != 0) {
776 _("'%s' must be before 'resize=%u'\n"),
777 token, param->s_reserved_gdt_blocks);
786 desc_size = strtoul(arg, &p, 0);
787 if (*p || (desc_size & (desc_size - 1))) {
789 _("Invalid desc_size: '%s'\n"), arg);
793 param->s_desc_size = desc_size;
794 } else if (strcmp(token, "hash_seed") == 0) {
801 (unsigned char *)param->s_hash_seed) != 0) {
803 _("Invalid hash seed: %s\n"), arg);
807 } else if (strcmp(token, "offset") == 0) {
813 offset = strtoull(arg, &p, 0);
815 fprintf(stderr, _("Invalid offset: %s\n"),
820 } else if (strcmp(token, "mmp_update_interval") == 0) {
826 param->s_mmp_update_interval = strtoul(arg, &p, 0);
829 _("Invalid mmp_update_interval: %s\n"),
834 } else if (strcmp(token, "no_copy_xattrs") == 0) {
837 } else if (strcmp(token, "num_backup_sb") == 0) {
843 num_backups = strtoul(arg, &p, 0);
844 if (*p || num_backups > 2) {
846 _("Invalid # of backup "
847 "superblocks: %s\n"),
852 } else if (strcmp(token, "packed_meta_blocks") == 0) {
854 packed_meta_blocks = strtoul(arg, &p, 0);
856 packed_meta_blocks = 1;
857 if (packed_meta_blocks)
858 journal_location = 0;
859 } else if (strcmp(token, "stride") == 0) {
865 param->s_raid_stride = strtoul(arg, &p, 0);
868 _("Invalid stride parameter: %s\n"),
873 } else if (strcmp(token, "stripe-width") == 0 ||
874 strcmp(token, "stripe_width") == 0) {
880 param->s_raid_stripe_width = strtoul(arg, &p, 0);
883 _("Invalid stripe-width parameter: %s\n"),
888 } else if (!strcmp(token, "resize")) {
890 unsigned long bpg, rsv_groups;
891 unsigned long group_desc_count, desc_blocks;
892 unsigned int gdpb, blocksize;
901 resize = parse_num_blocks2(arg,
902 param->s_log_block_size);
906 _("Invalid resize parameter: %s\n"),
911 if (resize <= ext2fs_blocks_count(param)) {
912 fprintf(stderr, "%s",
913 _("The resize maximum must be greater "
914 "than the filesystem size.\n"));
919 blocksize = EXT2_BLOCK_SIZE(param);
920 bpg = param->s_blocks_per_group;
923 gdpb = EXT2_DESC_PER_BLOCK(param);
924 group_desc_count = (__u32) ext2fs_div64_ceil(
925 ext2fs_blocks_count(param), bpg);
926 desc_blocks = (group_desc_count +
928 rsv_groups = ext2fs_div64_ceil(resize, bpg);
929 rsv_gdb = ext2fs_div_ceil(rsv_groups, gdpb) -
931 if (rsv_gdb > (int) EXT2_ADDR_PER_BLOCK(param))
932 rsv_gdb = EXT2_ADDR_PER_BLOCK(param);
935 if (param->s_rev_level == EXT2_GOOD_OLD_REV) {
936 fprintf(stderr, "%s",
937 _("On-line resizing not supported with revision 0 filesystems\n"));
941 ext2fs_set_feature_resize_inode(param);
943 param->s_reserved_gdt_blocks = rsv_gdb;
945 } else if (!strcmp(token, "test_fs")) {
946 param->s_flags |= EXT2_FLAGS_TEST_FILESYS;
947 } else if (!strcmp(token, "lazy_itable_init")) {
949 lazy_itable_init = strtoul(arg, &p, 0);
951 lazy_itable_init = 1;
952 } else if (!strcmp(token, "lazy_journal_init")) {
954 journal_flags |= strtoul(arg, &p, 0) ?
955 EXT2_MKJOURNAL_LAZYINIT : 0;
957 journal_flags |= EXT2_MKJOURNAL_LAZYINIT;
958 } else if (!strcmp(token, "root_owner")) {
960 root_uid = strtoul(arg, &p, 0);
963 _("Invalid root_owner: '%s'\n"),
969 root_gid = strtoul(p, &p, 0);
972 _("Invalid root_owner: '%s'\n"),
981 } else if (!strcmp(token, "discard")) {
983 } else if (!strcmp(token, "nodiscard")) {
985 } else if (!strcmp(token, "quotatype")) {
994 ret = parse_quota_types(arg, "atype_bits, &errtok);
998 "Failed to parse quota type at %s", errtok);
1001 com_err(program_name, ret,
1002 "while parsing quota type");
1007 } else if (!strcmp(token, "android_sparse")) {
1008 android_sparse_file = 1;
1009 } else if (!strcmp(token, "encoding")) {
1015 encoding = e2p_str2encoding(arg);
1017 fprintf(stderr, _("Invalid encoding: %s"), arg);
1021 param->s_encoding = encoding;
1022 ext2fs_set_feature_casefold(param);
1023 } else if (!strcmp(token, "encoding_flags")) {
1028 encoding_flags = arg;
1035 fprintf(stderr, _("\nBad option(s) specified: %s\n\n"
1036 "Extended options are separated by commas, "
1037 "and may take an argument which\n"
1038 "\tis set off by an equals ('=') sign.\n\n"
1039 "Valid extended options are:\n"
1040 "\tmmp_update_interval=<interval>\n"
1041 "\tnum_backup_sb=<0|1|2>\n"
1042 "\tstride=<RAID per-disk data chunk in blocks>\n"
1043 "\tstripe-width=<RAID stride * data disks in blocks>\n"
1044 "\toffset=<offset to create the file system>\n"
1045 "\tresize=<resize maximum size in blocks>\n"
1046 "\tpacked_meta_blocks=<0 to disable, 1 to enable>\n"
1047 "\tlazy_itable_init=<0 to disable, 1 to enable>\n"
1048 "\tlazy_journal_init=<0 to disable, 1 to enable>\n"
1049 "\troot_owner=<uid of root dir>:<gid of root dir>\n"
1053 "\tencoding=<encoding>\n"
1054 "\tencoding_flags=<flags>\n"
1055 "\tquotatype=<quota type(s) to be enabled>\n\n"),
1056 badopt ? badopt : "");
1060 if (param->s_raid_stride &&
1061 (param->s_raid_stripe_width % param->s_raid_stride) != 0)
1062 fprintf(stderr, _("\nWarning: RAID stripe-width %u not an even "
1063 "multiple of stride %u.\n\n"),
1064 param->s_raid_stripe_width, param->s_raid_stride);
1066 if (ext2fs_has_feature_casefold(param)) {
1067 param->s_encoding_flags =
1068 e2p_get_encoding_flags(param->s_encoding);
1070 if (encoding_flags &&
1071 e2p_str2encoding_flags(param->s_encoding, encoding_flags,
1072 ¶m->s_encoding_flags)) {
1073 fprintf(stderr, _("error: Invalid encoding flag: %s\n"),
1078 } else if (encoding_flags) {
1079 fprintf(stderr, _("error: An encoding must be explicitly "
1080 "specified when passing encoding-flags\n"));
1088 static __u32 ok_features[3] = {
1090 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
1091 EXT2_FEATURE_COMPAT_RESIZE_INODE |
1092 EXT2_FEATURE_COMPAT_DIR_INDEX |
1093 EXT2_FEATURE_COMPAT_EXT_ATTR |
1094 EXT4_FEATURE_COMPAT_SPARSE_SUPER2,
1096 EXT2_FEATURE_INCOMPAT_FILETYPE|
1097 EXT3_FEATURE_INCOMPAT_EXTENTS|
1098 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
1099 EXT2_FEATURE_INCOMPAT_META_BG|
1100 EXT4_FEATURE_INCOMPAT_FLEX_BG|
1101 EXT4_FEATURE_INCOMPAT_EA_INODE|
1102 EXT4_FEATURE_INCOMPAT_MMP |
1103 EXT4_FEATURE_INCOMPAT_DIRDATA|
1104 EXT4_FEATURE_INCOMPAT_64BIT|
1105 EXT4_FEATURE_INCOMPAT_INLINE_DATA|
1106 EXT4_FEATURE_INCOMPAT_ENCRYPT |
1107 EXT4_FEATURE_INCOMPAT_CASEFOLD |
1108 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
1109 EXT4_FEATURE_INCOMPAT_LARGEDIR,
1111 EXT2_FEATURE_RO_COMPAT_LARGE_FILE|
1112 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
1113 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
1114 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
1115 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|
1116 EXT4_FEATURE_RO_COMPAT_GDT_CSUM|
1117 EXT4_FEATURE_RO_COMPAT_BIGALLOC|
1118 EXT4_FEATURE_RO_COMPAT_QUOTA|
1119 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|
1120 EXT4_FEATURE_RO_COMPAT_PROJECT|
1121 EXT4_FEATURE_RO_COMPAT_VERITY
1125 static void syntax_err_report(const char *filename, long err, int line_num)
1128 _("Syntax error in mke2fs config file (%s, line #%d)\n\t%s\n"),
1129 filename, line_num, error_message(err));
1133 static const char *config_fn[] = { ROOT_SYSCONFDIR "/mke2fs.conf", 0 };
1135 static void edit_feature(const char *str, __u32 *compat_array)
1140 if (e2p_edit_feature(str, compat_array, ok_features)) {
1141 fprintf(stderr, _("Invalid filesystem option set: %s\n"),
1147 static void edit_mntopts(const char *str, __u32 *mntopts)
1152 if (e2p_edit_mntopts(str, mntopts, ~0)) {
1153 fprintf(stderr, _("Invalid mount option set: %s\n"),
1165 static errcode_t init_list(struct str_list *sl)
1169 sl->list = malloc((sl->max+1) * sizeof(char *));
1176 static errcode_t push_string(struct str_list *sl, const char *str)
1180 if (sl->num >= sl->max) {
1182 new_list = realloc(sl->list, (sl->max+1) * sizeof(char *));
1185 sl->list = new_list;
1187 sl->list[sl->num] = malloc(strlen(str)+1);
1188 if (sl->list[sl->num] == 0)
1190 strcpy(sl->list[sl->num], str);
1192 sl->list[sl->num] = 0;
1196 static void print_str_list(char **list)
1200 for (cpp = list; *cpp; cpp++) {
1201 printf("'%s'", *cpp);
1203 fputs(", ", stdout);
1205 fputc('\n', stdout);
1209 * Return TRUE if the profile has the given subsection
1211 static int profile_has_subsection(profile_t prof, const char *section,
1212 const char *subsection)
1215 const char *names[4];
1220 names[1] = subsection;
1223 if (profile_iterator_create(prof, names,
1224 PROFILE_ITER_LIST_SECTION |
1225 PROFILE_ITER_RELATIONS_ONLY, &state))
1228 if ((profile_iterator(&state, &name, 0) == 0) && name) {
1233 profile_iterator_free(&state);
1237 static char **parse_fs_type(const char *fs_type,
1238 const char *usage_types,
1239 struct ext2_super_block *sb,
1240 blk64_t fs_blocks_count,
1243 const char *ext_type = 0;
1245 char *profile_type = 0;
1247 const char *size_type;
1248 struct str_list list;
1249 unsigned long long meg;
1250 int is_hurd = for_hurd(creator_os);
1252 if (init_list(&list))
1259 else if (!strcmp(program_name, "mke3fs"))
1261 else if (!strcmp(program_name, "mke4fs"))
1263 else if (progname) {
1264 ext_type = strrchr(progname, '/');
1268 ext_type = progname;
1270 if (!strncmp(ext_type, "mkfs.", 5)) {
1272 if (ext_type[0] == 0)
1279 profile_get_string(profile, "defaults", "fs_type", 0,
1280 "ext2", &profile_type);
1281 ext_type = profile_type;
1282 if (!strcmp(ext_type, "ext2") && (journal_size != 0))
1287 if (!profile_has_subsection(profile, "fs_types", ext_type) &&
1288 strcmp(ext_type, "ext2")) {
1289 printf(_("\nYour mke2fs.conf file does not define the "
1290 "%s filesystem type.\n"), ext_type);
1291 if (!strcmp(ext_type, "ext3") || !strcmp(ext_type, "ext4") ||
1292 !strcmp(ext_type, "ext4dev")) {
1293 printf("%s", _("You probably need to install an "
1294 "updated mke2fs.conf file.\n\n"));
1297 printf("%s", _("Aborting...\n"));
1302 meg = (1024 * 1024) / EXT2_BLOCK_SIZE(sb);
1303 if (fs_blocks_count < 3 * meg)
1304 size_type = "floppy";
1305 else if (fs_blocks_count < 512 * meg)
1306 size_type = "small";
1307 else if (fs_blocks_count < 4 * 1024 * 1024 * meg)
1308 size_type = "default";
1309 else if (fs_blocks_count < 16 * 1024 * 1024 * meg)
1315 usage_types = size_type;
1317 parse_str = malloc(strlen(usage_types)+1);
1323 strcpy(parse_str, usage_types);
1326 push_string(&list, ext_type);
1329 t = strchr(cp, ',');
1334 if (profile_has_subsection(profile, "fs_types", cp))
1335 push_string(&list, cp);
1336 else if (strcmp(cp, "default") != 0)
1338 _("\nWarning: the fs_type %s is not "
1339 "defined in mke2fs.conf\n\n"),
1350 push_string(&list, "hurd");
1354 char *get_string_from_profile(char **types, const char *opt,
1355 const char *def_val)
1360 for (i=0; types[i]; i++);
1361 for (i-=1; i >=0 ; i--) {
1362 profile_get_string(profile, "fs_types", types[i],
1367 profile_get_string(profile, "defaults", opt, 0, def_val, &ret);
1371 int get_int_from_profile(char **types, const char *opt, int def_val)
1376 profile_get_integer(profile, "defaults", opt, 0, def_val, &ret);
1377 for (cpp = types; *cpp; cpp++)
1378 profile_get_integer(profile, "fs_types", *cpp, opt, ret, &ret);
1382 static unsigned int get_uint_from_profile(char **types, const char *opt,
1383 unsigned int def_val)
1388 profile_get_uint(profile, "defaults", opt, 0, def_val, &ret);
1389 for (cpp = types; *cpp; cpp++)
1390 profile_get_uint(profile, "fs_types", *cpp, opt, ret, &ret);
1394 static double get_double_from_profile(char **types, const char *opt,
1400 profile_get_double(profile, "defaults", opt, 0, def_val, &ret);
1401 for (cpp = types; *cpp; cpp++)
1402 profile_get_double(profile, "fs_types", *cpp, opt, ret, &ret);
1406 int get_bool_from_profile(char **types, const char *opt, int def_val)
1411 profile_get_boolean(profile, "defaults", opt, 0, def_val, &ret);
1412 for (cpp = types; *cpp; cpp++)
1413 profile_get_boolean(profile, "fs_types", *cpp, opt, ret, &ret);
1417 extern const char *mke2fs_default_profile;
1418 static const char *default_files[] = { "<default>", 0 };
1420 #define OPTIMIZED_STRIPE_WIDTH 512
1421 #define OPTIMIZED_STRIDE 512
1423 #ifdef HAVE_BLKID_PROBE_GET_TOPOLOGY
1425 * Sets the geometry of a device (stripe/stride), and returns the
1426 * device's alignment offset, if any, or a negative error.
1428 static int get_device_geometry(const char *file,
1429 struct ext2_super_block *param,
1430 unsigned int psector_size)
1433 unsigned int blocksize;
1436 unsigned long min_io;
1437 unsigned long opt_io;
1438 struct stat statbuf;
1440 /* Nothing to do for a regular file */
1441 if (!stat(file, &statbuf) && S_ISREG(statbuf.st_mode))
1444 pr = blkid_new_probe_from_filename(file);
1448 tp = blkid_probe_get_topology(pr);
1452 min_io = blkid_topology_get_minimum_io_size(tp);
1453 if (min_io > OPTIMIZED_STRIDE) {
1455 "detected raid stride %lu too large, use optimum %lu\n",
1456 min_io, OPTIMIZED_STRIDE);
1457 min_io = OPTIMIZED_STRIDE;
1459 opt_io = blkid_topology_get_optimal_io_size(tp);
1460 if (opt_io > OPTIMIZED_STRIPE_WIDTH) {
1462 "detected raid stripe width %lu too large, use optimum %lu\n",
1463 opt_io, OPTIMIZED_STRIPE_WIDTH);
1464 opt_io = OPTIMIZED_STRIPE_WIDTH;
1466 blocksize = EXT2_BLOCK_SIZE(param);
1467 if ((min_io == 0) && (psector_size > blocksize))
1468 min_io = psector_size;
1469 if ((opt_io == 0) && min_io)
1471 if ((opt_io == 0) && (psector_size > blocksize))
1472 opt_io = psector_size;
1474 /* setting stripe/stride to blocksize is pointless */
1475 if (min_io > blocksize)
1476 param->s_raid_stride = min_io / blocksize;
1477 if (opt_io > blocksize)
1478 param->s_raid_stripe_width = opt_io / blocksize;
1480 rc = blkid_topology_get_alignment_offset(tp);
1482 blkid_free_probe(pr);
1487 static void PRS(int argc, char *argv[])
1490 int cluster_size = 0;
1492 int explicit_fssize = 0;
1494 int inode_ratio = 0;
1496 unsigned long flex_bg_size = 0;
1497 double reserved_ratio = -1.0;
1498 int lsector_size = 0, psector_size = 0;
1499 int show_version_only = 0, is_device = 0;
1500 unsigned long long num_inodes = 0; /* unsigned long long to catch too-large input */
1502 char * oldpath = getenv("PATH");
1503 char * extended_opts = 0;
1505 char * usage_types = 0;
1507 * NOTE: A few words about fs_blocks_count and blocksize:
1509 * Initially, blocksize is set to zero, which implies 1024.
1510 * If -b is specified, blocksize is updated to the user's value.
1512 * Next, the device size or the user's "blocks" command line argument
1513 * is used to set fs_blocks_count; the units are blocksize.
1515 * Later, if blocksize hasn't been set and the profile specifies a
1516 * blocksize, then blocksize is updated and fs_blocks_count is scaled
1517 * appropriately. Note the change in units!
1519 * Finally, we complain about fs_blocks_count > 2^32 on a non-64bit fs.
1521 blk64_t fs_blocks_count = 0;
1523 int s_opt = -1, r_opt = -1;
1524 char *fs_features = 0;
1525 int fs_features_size = 0;
1528 int pathlen = sizeof(PATH_SET) + 1;
1531 pathlen += strlen(oldpath);
1532 newpath = malloc(pathlen);
1534 fprintf(stderr, "%s",
1535 _("Couldn't allocate memory for new PATH.\n"));
1538 strcpy(newpath, PATH_SET);
1540 /* Update our PATH to include /sbin */
1542 strcat (newpath, ":");
1543 strcat (newpath, oldpath);
1547 /* Determine the system page size if possible */
1549 #if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
1550 #define _SC_PAGESIZE _SC_PAGE_SIZE
1553 sysval = sysconf(_SC_PAGESIZE);
1555 sys_page_size = sysval;
1556 #endif /* _SC_PAGESIZE */
1557 #endif /* HAVE_SYSCONF */
1559 if ((tmp = getenv("MKE2FS_CONFIG")) != NULL)
1561 profile_set_syntax_err_cb(syntax_err_report);
1562 retval = profile_init(config_fn, &profile);
1563 if (retval == ENOENT) {
1564 retval = profile_init(default_files, &profile);
1567 retval = profile_set_default(profile, mke2fs_default_profile);
1570 } else if (retval) {
1572 fprintf(stderr, _("Couldn't init profile successfully"
1573 " (error: %ld).\n"), retval);
1577 setbuf(stdout, NULL);
1578 setbuf(stderr, NULL);
1579 add_error_table(&et_ext2_error_table);
1580 add_error_table(&et_prof_error_table);
1581 memset(&fs_param, 0, sizeof(struct ext2_super_block));
1582 fs_param.s_rev_level = 1; /* Create revision 1 filesystems now */
1584 if (ext2fs_is_before_linux_ver(2, 2, 0))
1585 fs_param.s_rev_level = 0;
1587 if (argc && *argv) {
1588 program_name = get_progname(*argv);
1590 /* If called as mkfs.ext3, create a journal inode */
1591 if (!strcmp(program_name, "mkfs.ext3") ||
1592 !strcmp(program_name, "mke3fs"))
1596 while ((c = getopt (argc, argv,
1597 "b:cd:e:g:i:jl:m:no:qr:s:t:vC:DE:FG:I:J:KL:M:N:O:R:ST:U:Vz:")) != EOF) {
1600 blocksize = parse_num_blocks2(optarg, -1);
1601 b = (blocksize > 0) ? blocksize : -blocksize;
1602 if (b < EXT2_MIN_BLOCK_SIZE ||
1603 b > EXT2_MAX_BLOCK_SIZE) {
1604 com_err(program_name, 0,
1605 _("invalid block size - %s"), optarg);
1608 if (blocksize > 4096)
1609 fprintf(stderr, _("Warning: blocksize %d not "
1610 "usable on most systems.\n"),
1613 fs_param.s_log_block_size =
1614 int_log2(blocksize >>
1615 EXT2_MIN_BLOCK_LOG_SIZE);
1617 case 'c': /* Check for bad blocks */
1621 cluster_size = parse_num_blocks2(optarg, -1);
1622 if (cluster_size <= EXT2_MIN_CLUSTER_SIZE ||
1623 cluster_size > EXT2_MAX_CLUSTER_SIZE) {
1624 com_err(program_name, 0,
1625 _("invalid cluster size - %s"),
1631 src_root_dir = optarg;
1637 com_err(program_name, 0, "%s",
1638 _("'-R' is deprecated, use '-E' instead"));
1641 extended_opts = optarg;
1644 if (strcmp(optarg, "continue") == 0)
1645 errors_behavior = EXT2_ERRORS_CONTINUE;
1646 else if (strcmp(optarg, "remount-ro") == 0)
1647 errors_behavior = EXT2_ERRORS_RO;
1648 else if (strcmp(optarg, "panic") == 0)
1649 errors_behavior = EXT2_ERRORS_PANIC;
1651 com_err(program_name, 0,
1652 _("bad error behavior - %s"),
1661 fs_param.s_blocks_per_group = strtoul(optarg, &tmp, 0);
1663 com_err(program_name, 0, "%s",
1664 _("Illegal number for blocks per group"));
1667 if ((fs_param.s_blocks_per_group % 8) != 0) {
1668 com_err(program_name, 0, "%s",
1669 _("blocks per group must be multiple of 8"));
1674 flex_bg_size = strtoul(optarg, &tmp, 0);
1676 com_err(program_name, 0, "%s",
1677 _("Illegal number for flex_bg size"));
1680 if (flex_bg_size < 1 ||
1681 (flex_bg_size & (flex_bg_size-1)) != 0) {
1682 com_err(program_name, 0, "%s",
1683 _("flex_bg size must be a power of 2"));
1686 if (flex_bg_size > MAX_32_NUM) {
1687 com_err(program_name, 0,
1688 _("flex_bg size (%lu) must be less than"
1689 " or equal to 2^31"), flex_bg_size);
1694 inode_ratio = parse_num_blocks(optarg, -1);
1695 if (inode_ratio < EXT2_MIN_BLOCK_SIZE ||
1696 inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024) {
1697 com_err(program_name, 0,
1698 _("invalid inode ratio %s (min %d/max %d)"),
1699 optarg, EXT2_MIN_BLOCK_SIZE,
1700 EXT2_MAX_BLOCK_SIZE * 1024);
1705 inode_size = strtoul(optarg, &tmp, 0);
1707 com_err(program_name, 0,
1708 _("invalid inode size - %s"), optarg);
1717 parse_journal_opts(optarg);
1720 fprintf(stderr, "%s",
1721 _("Warning: -K option is deprecated and "
1722 "should not be used anymore. Use "
1723 "\'-E nodiscard\' extended option "
1728 bad_blocks_filename = realloc(bad_blocks_filename,
1729 strlen(optarg) + 1);
1730 if (!bad_blocks_filename) {
1731 com_err(program_name, ENOMEM, "%s",
1732 _("in malloc for bad_blocks_filename"));
1735 strcpy(bad_blocks_filename, optarg);
1738 volume_label = optarg;
1739 if (strlen(volume_label) > EXT2_LABEL_LEN) {
1740 volume_label[EXT2_LABEL_LEN] = '\0';
1741 fprintf(stderr, _("Warning: label too long; will be truncated to '%s'\n\n"),
1746 reserved_ratio = strtod(optarg, &tmp);
1747 if ( *tmp || reserved_ratio > 50 ||
1748 reserved_ratio < 0) {
1749 com_err(program_name, 0,
1750 _("invalid reserved blocks percent - %s"),
1762 num_inodes = strtoul(optarg, &tmp, 0);
1764 com_err(program_name, 0,
1765 _("bad num inodes - %s"), optarg);
1770 creator_os = optarg;
1773 retval = ext2fs_resize_mem(fs_features_size,
1774 fs_features_size + 1 + strlen(optarg),
1777 com_err(program_name, retval,
1778 _("while allocating fs_feature string"));
1781 if (fs_features_size)
1782 strcat(fs_features, ",");
1785 strcat(fs_features, optarg);
1786 fs_features_size += 1 + strlen(optarg);
1792 r_opt = strtoul(optarg, &tmp, 0);
1794 com_err(program_name, 0,
1795 _("bad revision level - %s"), optarg);
1798 if (r_opt > EXT2_MAX_SUPP_REV) {
1799 com_err(program_name, EXT2_ET_REV_TOO_HIGH,
1800 _("while trying to create revision %d"), r_opt);
1803 fs_param.s_rev_level = r_opt;
1805 case 's': /* deprecated */
1806 s_opt = atoi(optarg);
1813 com_err(program_name, 0, "%s",
1814 _("The -t option may only be used once"));
1817 fs_type = strdup(optarg);
1821 com_err(program_name, 0, "%s",
1822 _("The -T option may only be used once"));
1825 usage_types = strdup(optarg);
1834 /* Print version number and exit */
1835 show_version_only++;
1844 if ((optind == argc) && !show_version_only)
1846 device_name = argv[optind++];
1848 if (!quiet || show_version_only)
1849 fprintf (stderr, "mke2fs %s (%s)\n", E2FSPROGS_VERSION,
1852 if (show_version_only) {
1853 fprintf(stderr, _("\tUsing %s\n"),
1854 error_message(EXT2_ET_BASE));
1859 * If there's no blocksize specified and there is a journal
1860 * device, use it to figure out the blocksize
1862 if (blocksize <= 0 && journal_device) {
1866 #ifdef CONFIG_TESTIO_DEBUG
1867 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1868 io_ptr = test_io_manager;
1869 test_io_backing_manager = unix_io_manager;
1872 io_ptr = unix_io_manager;
1873 retval = ext2fs_open(journal_device,
1874 EXT2_FLAG_JOURNAL_DEV_OK, 0,
1877 com_err(program_name, retval,
1878 _("while trying to open journal device %s\n"),
1882 if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) {
1883 com_err(program_name, 0,
1884 _("Journal dev blocksize (%d) smaller than "
1885 "minimum blocksize %d\n"), jfs->blocksize,
1889 blocksize = jfs->blocksize;
1890 printf(_("Using journal device's blocksize: %d\n"), blocksize);
1891 fs_param.s_log_block_size =
1892 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
1893 ext2fs_close_free(&jfs);
1896 if (optind < argc) {
1897 fs_blocks_count = parse_num_blocks2(argv[optind++],
1898 fs_param.s_log_block_size);
1899 if (!fs_blocks_count) {
1900 com_err(program_name, 0,
1901 _("invalid blocks '%s' on device '%s'"),
1902 argv[optind - 1], device_name);
1909 profile_get_integer(profile, "options", "sync_kludge", 0, 0,
1911 tmp = getenv("MKE2FS_SYNC");
1913 sync_kludge = atoi(tmp);
1915 profile_get_integer(profile, "options", "proceed_delay", 0, 0,
1918 /* The isatty() test is so we don't break existing scripts */
1919 flags = CREATE_FILE;
1920 if (isatty(0) && isatty(1) && !offset)
1921 flags |= CHECK_FS_EXIST;
1923 flags |= VERBOSE_CREATE;
1924 if (fs_blocks_count == 0)
1927 explicit_fssize = 1;
1928 if (!check_plausibility(device_name, flags, &is_device) && !force)
1929 proceed_question(proceed_delay);
1931 check_mount(device_name, force, _("filesystem"));
1933 /* Determine the size of the device (if possible) */
1934 if (noaction && fs_blocks_count) {
1935 dev_size = fs_blocks_count;
1939 retval = ext2fs_get_device_size2(device_name,
1940 EXT2_BLOCK_SIZE(&fs_param),
1943 retval = ext2fs_get_device_size(device_name,
1944 EXT2_BLOCK_SIZE(&fs_param),
1947 if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) {
1948 com_err(program_name, retval, "%s",
1949 _("while trying to determine filesystem size"));
1952 if (!fs_blocks_count) {
1953 if (retval == EXT2_ET_UNIMPLEMENTED) {
1954 com_err(program_name, 0, "%s",
1955 _("Couldn't determine device size; you "
1956 "must specify\nthe size of the "
1960 if (dev_size == 0) {
1961 com_err(program_name, 0, "%s",
1962 _("Device size reported to be zero. "
1963 "Invalid partition specified, or\n\t"
1964 "partition table wasn't reread "
1965 "after running fdisk, due to\n\t"
1966 "a modified partition being busy "
1967 "and in use. You may need to reboot\n\t"
1968 "to re-read your partition table.\n"
1972 fs_blocks_count = dev_size;
1973 if (sys_page_size > EXT2_BLOCK_SIZE(&fs_param))
1974 fs_blocks_count &= ~((blk64_t) ((sys_page_size /
1975 EXT2_BLOCK_SIZE(&fs_param))-1));
1977 } else if (!force && is_device && (fs_blocks_count > dev_size)) {
1978 com_err(program_name, 0, "%s",
1979 _("Filesystem larger than apparent device size."));
1980 proceed_question(proceed_delay);
1984 profile_get_string(profile, "devices", device_name,
1985 "fs_type", 0, &fs_type);
1987 profile_get_string(profile, "devices", device_name,
1988 "usage_types", 0, &usage_types);
1991 * We have the file system (or device) size, so we can now
1992 * determine the appropriate file system types so the fs can
1993 * be appropriately configured.
1995 fs_types = parse_fs_type(fs_type, usage_types, &fs_param,
1996 fs_blocks_count, argv[0]);
1998 fprintf(stderr, "%s", _("Failed to parse fs types list\n"));
2002 /* Figure out what features should be enabled */
2005 if (fs_param.s_rev_level != EXT2_GOOD_OLD_REV) {
2006 tmp = get_string_from_profile(fs_types, "base_features",
2007 "sparse_super,large_file,filetype,resize_inode,dir_index");
2008 edit_feature(tmp, &fs_param.s_feature_compat);
2011 /* And which mount options as well */
2012 tmp = get_string_from_profile(fs_types, "default_mntopts",
2014 edit_mntopts(tmp, &fs_param.s_default_mount_opts);
2018 for (cpp = fs_types; *cpp; cpp++) {
2020 profile_get_string(profile, "fs_types", *cpp,
2021 "features", "", &tmp);
2023 edit_feature(tmp, &fs_param.s_feature_compat);
2027 tmp = get_string_from_profile(fs_types, "default_features",
2030 /* Mask off features which aren't supported by the Hurd */
2031 if (for_hurd(creator_os)) {
2032 ext2fs_clear_feature_filetype(&fs_param);
2033 ext2fs_clear_feature_huge_file(&fs_param);
2034 ext2fs_clear_feature_metadata_csum(&fs_param);
2035 ext2fs_clear_feature_ea_inode(&fs_param);
2036 ext2fs_clear_feature_casefold(&fs_param);
2038 edit_feature(fs_features ? fs_features : tmp,
2039 &fs_param.s_feature_compat);
2042 (void) ext2fs_free_mem(&fs_features);
2044 * If the user specified features incompatible with the Hurd, complain
2046 if (for_hurd(creator_os)) {
2047 if (ext2fs_has_feature_filetype(&fs_param)) {
2048 fprintf(stderr, "%s", _("The HURD does not support the "
2049 "filetype feature.\n"));
2052 if (ext2fs_has_feature_huge_file(&fs_param)) {
2053 fprintf(stderr, "%s", _("The HURD does not support the "
2054 "huge_file feature.\n"));
2057 if (ext2fs_has_feature_metadata_csum(&fs_param)) {
2058 fprintf(stderr, "%s", _("The HURD does not support the "
2059 "metadata_csum feature.\n"));
2062 if (ext2fs_has_feature_ea_inode(&fs_param)) {
2063 fprintf(stderr, "%s", _("The HURD does not support the "
2064 "ea_inode feature.\n"));
2069 /* Get the hardware sector sizes, if available */
2070 retval = ext2fs_get_device_sectsize(device_name, &lsector_size);
2072 com_err(program_name, retval, "%s",
2073 _("while trying to determine hardware sector size"));
2076 retval = ext2fs_get_device_phys_sectsize(device_name, &psector_size);
2078 com_err(program_name, retval, "%s",
2079 _("while trying to determine physical sector size"));
2083 tmp = getenv("MKE2FS_DEVICE_SECTSIZE");
2085 lsector_size = atoi(tmp);
2086 tmp = getenv("MKE2FS_DEVICE_PHYS_SECTSIZE");
2088 psector_size = atoi(tmp);
2090 /* Older kernels may not have physical/logical distinction */
2092 psector_size = lsector_size;
2094 if (blocksize <= 0) {
2095 use_bsize = get_int_from_profile(fs_types, "blocksize", 4096);
2097 if (use_bsize == -1) {
2098 use_bsize = sys_page_size;
2099 if (ext2fs_is_before_linux_ver(2, 6, 0) &&
2103 if (lsector_size && use_bsize < lsector_size)
2104 use_bsize = lsector_size;
2105 if ((blocksize < 0) && (use_bsize < (-blocksize)))
2106 use_bsize = -blocksize;
2107 blocksize = use_bsize;
2108 fs_blocks_count /= (blocksize / 1024);
2110 if (blocksize < lsector_size) { /* Impossible */
2111 com_err(program_name, EINVAL, "%s",
2112 _("while setting blocksize; too small "
2115 } else if ((blocksize < psector_size) &&
2116 (psector_size <= sys_page_size)) { /* Suboptimal */
2117 fprintf(stderr, _("Warning: specified blocksize %d is "
2118 "less than device physical sectorsize %d\n"),
2119 blocksize, psector_size);
2123 fs_param.s_log_block_size =
2124 int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
2127 * We now need to do a sanity check of fs_blocks_count for
2128 * 32-bit vs 64-bit block number support.
2130 if (fs_blocks_count > MAX_32_NUM) {
2131 if (!ext2fs_has_feature_64bit(&fs_param) &&
2132 get_bool_from_profile(fs_types, "auto_64-bit_support", 0))
2133 ext2fs_set_feature_64bit(&fs_param);
2135 if (ext2fs_has_feature_64bit(&fs_param)) {
2136 ext2fs_clear_feature_resize_inode(&fs_param);
2139 _("%s: Size of device (0x%llx blocks) %s "
2140 "too big to be expressed\n\t"
2141 "in 32 bits using a blocksize of %d.\n"),
2142 program_name, fs_blocks_count, device_name,
2143 EXT2_BLOCK_SIZE(&fs_param));
2149 * Guard against group descriptor count overflowing... Mostly to avoid
2150 * strange results for absurdly large devices. This is in log2:
2151 * (blocksize) * (bits per byte) * (maximum number of block groups)
2153 if (fs_blocks_count >
2154 (1ULL << (EXT2_BLOCK_SIZE_BITS(&fs_param) + 3 + 32)) - 1) {
2155 fprintf(stderr, _("%s: Size of device (0x%llx blocks) %s "
2156 "too big to create\n\t"
2157 "a filesystem using a blocksize of %d.\n"),
2158 program_name, fs_blocks_count, device_name,
2159 EXT2_BLOCK_SIZE(&fs_param));
2163 ext2fs_blocks_count_set(&fs_param, fs_blocks_count);
2165 if (ext2fs_has_feature_journal_dev(&fs_param)) {
2168 for (i=0; fs_types[i]; i++) {
2172 fs_types[0] = strdup("journal");
2177 fputs(_("fs_types for mke2fs.conf resolution: "), stdout);
2178 print_str_list(fs_types);
2181 if (r_opt == EXT2_GOOD_OLD_REV &&
2182 (fs_param.s_feature_compat || fs_param.s_feature_incompat ||
2183 fs_param.s_feature_ro_compat)) {
2184 fprintf(stderr, "%s", _("Filesystem features not supported "
2185 "with revision 0 filesystems\n"));
2190 if (r_opt == EXT2_GOOD_OLD_REV) {
2191 fprintf(stderr, "%s",
2192 _("Sparse superblocks not supported "
2193 "with revision 0 filesystems\n"));
2196 ext2fs_set_feature_sparse_super(&fs_param);
2197 } else if (s_opt == 0)
2198 ext2fs_clear_feature_sparse_super(&fs_param);
2200 if (journal_size != 0) {
2201 if (r_opt == EXT2_GOOD_OLD_REV) {
2202 fprintf(stderr, "%s", _("Journals not supported with "
2203 "revision 0 filesystems\n"));
2206 ext2fs_set_feature_journal(&fs_param);
2209 /* Get reserved_ratio from profile if not specified on cmd line. */
2210 if (reserved_ratio < 0.0) {
2211 reserved_ratio = get_double_from_profile(
2212 fs_types, "reserved_ratio", 5.0);
2213 if (reserved_ratio > 50 || reserved_ratio < 0) {
2214 com_err(program_name, 0,
2215 _("invalid reserved blocks percent - %lf"),
2221 if (ext2fs_has_feature_journal_dev(&fs_param)) {
2223 fs_param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
2224 fs_param.s_feature_compat = 0;
2225 fs_param.s_feature_ro_compat &=
2226 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM;
2229 /* Check the user's mkfs options for 64bit */
2230 if (fs_blocks_count > MAX_32_NUM &&
2231 !ext2fs_has_feature_extents(&fs_param)) {
2232 printf("%s", _("Extents MUST be enabled for filesystems with "
2233 "over 2^32 blocks. Use '-O extents' to fix.\n"));
2237 /* Set first meta blockgroup via an environment variable */
2238 /* (this is mostly for debugging purposes) */
2239 if (ext2fs_has_feature_meta_bg(&fs_param) &&
2240 (tmp = getenv("MKE2FS_FIRST_META_BG")))
2241 fs_param.s_first_meta_bg = atoi(tmp);
2242 if (ext2fs_has_feature_bigalloc(&fs_param)) {
2244 cluster_size = get_int_from_profile(fs_types,
2247 fs_param.s_log_cluster_size =
2248 int_log2(cluster_size >> EXT2_MIN_CLUSTER_LOG_SIZE);
2249 if (fs_param.s_log_cluster_size &&
2250 fs_param.s_log_cluster_size < fs_param.s_log_block_size) {
2251 com_err(program_name, 0, "%s",
2252 _("The cluster size may not be "
2253 "smaller than the block size.\n"));
2256 } else if (cluster_size) {
2257 com_err(program_name, 0, "%s",
2258 _("specifying a cluster size requires the "
2259 "bigalloc feature"));
2262 fs_param.s_log_cluster_size = fs_param.s_log_block_size;
2264 if (inode_ratio == 0) {
2265 inode_ratio = get_int_from_profile(fs_types, "inode_ratio",
2267 if (inode_ratio < blocksize)
2268 inode_ratio = blocksize;
2269 if (inode_ratio < EXT2_CLUSTER_SIZE(&fs_param))
2270 inode_ratio = EXT2_CLUSTER_SIZE(&fs_param);
2273 #ifdef HAVE_BLKID_PROBE_GET_TOPOLOGY
2274 retval = get_device_geometry(device_name, &fs_param,
2275 (unsigned int) psector_size);
2278 _("warning: Unable to get device geometry for %s\n"),
2280 } else if (retval) {
2281 printf(_("%s alignment is offset by %lu bytes.\n"),
2282 device_name, retval);
2283 printf(_("This may result in very poor performance, "
2284 "(re)-partitioning suggested.\n"));
2288 num_backups = get_int_from_profile(fs_types, "num_backup_sb", 2);
2290 blocksize = EXT2_BLOCK_SIZE(&fs_param);
2293 * Initialize s_desc_size so that the parse_extended_opts()
2294 * can correctly handle "-E resize=NNN" if the 64-bit option
2297 if (ext2fs_has_feature_64bit(&fs_param))
2298 fs_param.s_desc_size = EXT2_MIN_DESC_SIZE_64BIT;
2300 /* This check should happen beyond the last assignment to blocksize */
2301 if (blocksize > sys_page_size) {
2303 com_err(program_name, 0,
2304 _("%d-byte blocks too big for system (max %d)"),
2305 blocksize, sys_page_size);
2306 proceed_question(proceed_delay);
2308 fprintf(stderr, _("Warning: %d-byte blocks too big for system "
2309 "(max %d), forced to continue\n"),
2310 blocksize, sys_page_size);
2313 /* Metadata checksumming wasn't totally stable before 3.18. */
2314 if (ext2fs_is_before_linux_ver(3, 18, 0) &&
2315 ext2fs_has_feature_metadata_csum(&fs_param))
2316 fprintf(stderr, _("Suggestion: Use Linux kernel >= 3.18 for "
2317 "improved stability of the metadata and journal "
2318 "checksum features.\n"));
2321 * On newer kernels we do have lazy_itable_init support. So pick the
2322 * right default in case ext4 module is not loaded.
2324 if (ext2fs_is_before_linux_ver(2, 6, 37))
2325 lazy_itable_init = 0;
2327 lazy_itable_init = 1;
2329 if (access("/sys/fs/ext4/features/lazy_itable_init", R_OK) == 0)
2330 lazy_itable_init = 1;
2332 lazy_itable_init = get_bool_from_profile(fs_types,
2335 discard = get_bool_from_profile(fs_types, "discard" , discard);
2336 journal_flags |= get_bool_from_profile(fs_types,
2337 "lazy_journal_init", 0) ?
2338 EXT2_MKJOURNAL_LAZYINIT : 0;
2339 journal_flags |= EXT2_MKJOURNAL_NO_MNT_CHECK;
2341 if (!journal_location_string)
2342 journal_location_string = get_string_from_profile(fs_types,
2343 "journal_location", "");
2344 if ((journal_location == ~0ULL) && journal_location_string &&
2345 *journal_location_string)
2346 journal_location = parse_num_blocks2(journal_location_string,
2347 fs_param.s_log_block_size);
2348 free(journal_location_string);
2350 packed_meta_blocks = get_bool_from_profile(fs_types,
2351 "packed_meta_blocks", 0);
2352 if (packed_meta_blocks)
2353 journal_location = 0;
2355 if (ext2fs_has_feature_casefold(&fs_param)) {
2356 char *ef, *en = get_string_from_profile(fs_types,
2357 "encoding", "utf8");
2358 int encoding = e2p_str2encoding(en);
2361 com_err(program_name, 0,
2362 _("Unknown filename encoding from profile: %s"),
2367 fs_param.s_encoding = encoding;
2368 ef = get_string_from_profile(fs_types, "encoding_flags", NULL);
2370 if (e2p_str2encoding_flags(encoding, ef,
2371 &fs_param.s_encoding_flags) < 0) {
2372 com_err(program_name, 0,
2373 _("Unknown encoding flags from profile: %s"), ef);
2378 fs_param.s_encoding_flags =
2379 e2p_get_encoding_flags(encoding);
2382 /* Get options from profile */
2383 for (cpp = fs_types; *cpp; cpp++) {
2385 profile_get_string(profile, "fs_types", *cpp, "options", "", &tmp);
2387 parse_extended_opts(&fs_param, tmp);
2392 parse_extended_opts(&fs_param, extended_opts);
2394 if (explicit_fssize == 0 && offset > 0) {
2395 fs_blocks_count -= offset / EXT2_BLOCK_SIZE(&fs_param);
2396 ext2fs_blocks_count_set(&fs_param, fs_blocks_count);
2398 _("\nWarning: offset specified without an "
2399 "explicit file system size.\n"
2400 "Creating a file system with %llu blocks "
2402 "not be what you want.\n\n"),
2403 (unsigned long long) fs_blocks_count);
2406 if (quotatype_bits & QUOTA_PRJ_BIT)
2407 ext2fs_set_feature_project(&fs_param);
2409 if (ext2fs_has_feature_project(&fs_param)) {
2410 quotatype_bits |= QUOTA_PRJ_BIT;
2411 if (inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
2412 com_err(program_name, 0,
2413 _("%d byte inodes are too small for "
2418 if (inode_size == 0) {
2419 inode_size = get_int_from_profile(fs_types,
2421 if (inode_size <= EXT2_GOOD_OLD_INODE_SIZE*2)
2422 inode_size = EXT2_GOOD_OLD_INODE_SIZE*2;
2426 if (ext2fs_has_feature_casefold(&fs_param) &&
2427 ext2fs_has_feature_encrypt(&fs_param)) {
2428 com_err(program_name, 0, "%s",
2429 _("The encrypt and casefold features are not "
2430 "compatible.\nThey can not be both enabled "
2431 "simultaneously.\n"));
2435 /* Don't allow user to set both metadata_csum and uninit_bg bits. */
2436 if (ext2fs_has_feature_metadata_csum(&fs_param) &&
2437 ext2fs_has_feature_gdt_csum(&fs_param))
2438 ext2fs_clear_feature_gdt_csum(&fs_param);
2440 /* Can't support bigalloc feature without extents feature */
2441 if (ext2fs_has_feature_bigalloc(&fs_param) &&
2442 !ext2fs_has_feature_extents(&fs_param)) {
2443 com_err(program_name, 0, "%s",
2444 _("Can't support bigalloc feature without "
2445 "extents feature"));
2449 if (ext2fs_has_feature_meta_bg(&fs_param) &&
2450 ext2fs_has_feature_resize_inode(&fs_param)) {
2451 fprintf(stderr, "%s", _("The resize_inode and meta_bg "
2452 "features are not compatible.\n"
2453 "They can not be both enabled "
2454 "simultaneously.\n"));
2458 if (!quiet && ext2fs_has_feature_bigalloc(&fs_param))
2459 fprintf(stderr, "%s", _("\nWarning: the bigalloc feature is "
2460 "still under development\n"
2461 "See https://ext4.wiki.kernel.org/"
2462 "index.php/Bigalloc for more information\n\n"));
2465 * Since sparse_super is the default, we would only have a problem
2466 * here if it was explicitly disabled.
2468 if (ext2fs_has_feature_resize_inode(&fs_param) &&
2469 !ext2fs_has_feature_sparse_super(&fs_param)) {
2470 com_err(program_name, 0, "%s",
2471 _("reserved online resize blocks not supported "
2472 "on non-sparse filesystem"));
2476 if (fs_param.s_blocks_per_group) {
2477 if (fs_param.s_blocks_per_group < 256 ||
2478 fs_param.s_blocks_per_group > 8 * (unsigned) blocksize) {
2479 com_err(program_name, 0, "%s",
2480 _("blocks per group count out of range"));
2486 * If the bigalloc feature is enabled, then the -g option will
2487 * specify the number of clusters per group.
2489 if (ext2fs_has_feature_bigalloc(&fs_param)) {
2490 fs_param.s_clusters_per_group = fs_param.s_blocks_per_group;
2491 fs_param.s_blocks_per_group = 0;
2494 if (inode_size == 0)
2495 inode_size = get_int_from_profile(fs_types, "inode_size", 0);
2496 if (!flex_bg_size && ext2fs_has_feature_flex_bg(&fs_param))
2497 flex_bg_size = get_uint_from_profile(fs_types,
2498 "flex_bg_size", 16);
2500 if (!ext2fs_has_feature_flex_bg(&fs_param)) {
2501 com_err(program_name, 0, "%s",
2502 _("Flex_bg feature not enabled, so "
2503 "flex_bg size may not be specified"));
2506 fs_param.s_log_groups_per_flex = int_log2(flex_bg_size);
2509 if (inode_size && fs_param.s_rev_level >= EXT2_DYNAMIC_REV) {
2510 if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
2511 inode_size > EXT2_BLOCK_SIZE(&fs_param) ||
2512 inode_size & (inode_size - 1)) {
2513 com_err(program_name, 0,
2514 _("invalid inode size %d (min %d/max %d)"),
2515 inode_size, EXT2_GOOD_OLD_INODE_SIZE,
2519 fs_param.s_inode_size = inode_size;
2523 * If inode size is 128 and inline data is enabled, we need
2524 * to notify users that inline data will never be useful.
2526 if (ext2fs_has_feature_inline_data(&fs_param) &&
2527 fs_param.s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
2528 com_err(program_name, 0,
2529 _("%d byte inodes are too small for inline data; "
2530 "specify larger size"),
2531 fs_param.s_inode_size);
2535 /* Make sure number of inodes specified will fit in 32 bits */
2536 if (num_inodes == 0) {
2537 unsigned long long n;
2538 n = ext2fs_blocks_count(&fs_param) * blocksize / inode_ratio;
2539 if (n > MAX_32_NUM) {
2540 num_inodes = MAX_32_NUM;
2541 if (!ext2fs_has_feature_64bit(&fs_param))
2542 com_err(program_name, 0,
2543 _("too many inodes (%llu), reduced to "
2544 "%llu"), n, MAX_32_NUM);
2546 } else if (num_inodes > MAX_32_NUM) {
2547 com_err(program_name, 0,
2548 _("too many inodes (%llu), specify < 2^32 inodes"),
2553 * Calculate number of inodes based on the inode ratio
2555 fs_param.s_inodes_count = num_inodes ? num_inodes :
2556 (ext2fs_blocks_count(&fs_param) * blocksize) / inode_ratio;
2558 if ((((unsigned long long)fs_param.s_inodes_count) *
2559 (inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE)) >=
2560 ((ext2fs_blocks_count(&fs_param)) *
2561 EXT2_BLOCK_SIZE(&fs_param))) {
2562 com_err(program_name, 0, _("inode_size (%u) * inodes_count "
2563 "(%u) too big for a\n\t"
2564 "filesystem with %llu blocks, "
2565 "specify higher inode_ratio (-i)\n\t"
2566 "or lower inode count (-N).\n"),
2567 inode_size ? inode_size : EXT2_GOOD_OLD_INODE_SIZE,
2568 fs_param.s_inodes_count,
2569 (unsigned long long) ext2fs_blocks_count(&fs_param));
2574 * Calculate number of blocks to reserve
2576 ext2fs_r_blocks_count_set(&fs_param, reserved_ratio *
2577 ext2fs_blocks_count(&fs_param) / 100.0);
2579 if (ext2fs_has_feature_sparse_super2(&fs_param)) {
2580 if (num_backups >= 1)
2581 fs_param.s_backup_bgs[0] = 1;
2582 if (num_backups >= 2)
2583 fs_param.s_backup_bgs[1] = ~0;
2590 static int should_do_undo(const char *name)
2595 struct ext2_super_block super;
2596 io_manager manager = unix_io_manager;
2597 int csum_flag, force_undo;
2599 csum_flag = ext2fs_has_feature_metadata_csum(&fs_param) ||
2600 ext2fs_has_feature_gdt_csum(&fs_param);
2601 force_undo = get_int_from_profile(fs_types, "force_undo", 0);
2602 if (!force_undo && (!csum_flag || !lazy_itable_init))
2605 retval = manager->open(name, IO_FLAG_EXCLUSIVE, &channel);
2608 * We don't handle error cases instead we
2609 * declare that the file system doesn't exist
2610 * and let the rest of mke2fs take care of
2617 io_channel_set_blksize(channel, SUPERBLOCK_OFFSET);
2618 retval = io_channel_read_blk64(channel, 1, -SUPERBLOCK_SIZE, &super);
2624 #if defined(WORDS_BIGENDIAN)
2625 s_magic = ext2fs_swab16(super.s_magic);
2627 s_magic = super.s_magic;
2630 if (s_magic == EXT2_SUPER_MAGIC)
2634 io_channel_close(channel);
2641 static int mke2fs_setup_tdb(const char *name, io_manager *io_ptr)
2643 errcode_t retval = ENOMEM;
2644 char *tdb_dir = NULL, *tdb_file = NULL;
2645 char *dev_name, *tmp_name;
2646 int free_tdb_dir = 0;
2648 /* (re)open a specific undo file */
2649 if (undo_file && undo_file[0] != 0) {
2650 retval = set_undo_io_backing_manager(*io_ptr);
2653 *io_ptr = undo_io_manager;
2654 retval = set_undo_io_backup_file(undo_file);
2657 printf(_("Overwriting existing filesystem; this can be undone "
2658 "using the command:\n"
2659 " e2undo %s %s\n\n"), undo_file, name);
2664 * Configuration via a conf file would be
2667 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2669 profile_get_string(profile, "defaults",
2670 "undo_dir", 0, "/var/lib/e2fsprogs",
2675 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2676 access(tdb_dir, W_OK)) {
2682 tmp_name = strdup(name);
2685 dev_name = basename(tmp_name);
2686 tdb_file = malloc(strlen(tdb_dir) + 8 + strlen(dev_name) + 7 + 1);
2691 sprintf(tdb_file, "%s/mke2fs-%s.e2undo", tdb_dir, dev_name);
2694 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2696 com_err(program_name, retval,
2697 _("while trying to delete %s"), tdb_file);
2701 retval = set_undo_io_backing_manager(*io_ptr);
2704 *io_ptr = undo_io_manager;
2705 retval = set_undo_io_backup_file(tdb_file);
2708 printf(_("Overwriting existing filesystem; this can be undone "
2709 "using the command:\n"
2710 " e2undo %s %s\n\n"), tdb_file, name);
2722 com_err(program_name, retval, "%s",
2723 _("while trying to setup undo file\n"));
2727 static int mke2fs_discard_device(ext2_filsys fs)
2729 struct ext2fs_numeric_progress_struct progress;
2730 blk64_t blocks = ext2fs_blocks_count(fs->super);
2731 blk64_t count = DISCARD_STEP_MB;
2736 * Let's try if discard really works on the device, so
2737 * we do not print numeric progress resulting in failure
2740 retval = io_channel_discard(fs->io, 0, fs->blocksize);
2743 cur = fs->blocksize;
2745 count *= (1024 * 1024);
2746 count /= fs->blocksize;
2748 ext2fs_numeric_progress_init(fs, &progress,
2749 _("Discarding device blocks: "),
2751 while (cur < blocks) {
2752 ext2fs_numeric_progress_update(fs, &progress, cur);
2754 if (cur + count > blocks)
2755 count = blocks - cur;
2757 retval = io_channel_discard(fs->io, cur, count);
2764 ext2fs_numeric_progress_close(fs, &progress,
2767 printf("%s\n",error_message(retval));
2769 ext2fs_numeric_progress_close(fs, &progress,
2775 static void fix_cluster_bg_counts(ext2_filsys fs)
2777 blk64_t block, num_blocks, last_block, next;
2778 blk64_t tot_free = 0;
2783 num_blocks = ext2fs_blocks_count(fs->super);
2784 last_block = ext2fs_group_last_block2(fs, group);
2785 block = fs->super->s_first_data_block;
2786 while (block < num_blocks) {
2787 retval = ext2fs_find_first_zero_block_bitmap2(fs->block_map,
2788 block, last_block, &next);
2792 block = last_block + 1;
2796 retval = ext2fs_find_first_set_block_bitmap2(fs->block_map,
2797 block, last_block, &next);
2799 next = last_block + 1;
2800 grp_free += EXT2FS_NUM_B2C(fs, next - block);
2801 tot_free += next - block;
2804 if (block > last_block) {
2806 ext2fs_bg_free_blocks_count_set(fs, group, grp_free);
2807 ext2fs_group_desc_csum_set(fs, group);
2810 last_block = ext2fs_group_last_block2(fs, group);
2813 ext2fs_free_blocks_count_set(fs->super, tot_free);
2816 static int create_quota_inodes(ext2_filsys fs)
2821 retval = quota_init_context(&qctx, fs, quotatype_bits);
2823 com_err(program_name, retval,
2824 _("while initializing quota context"));
2827 quota_compute_usage(qctx);
2828 retval = quota_write_inode(qctx, quotatype_bits);
2830 com_err(program_name, retval,
2831 _("while writing quota inodes"));
2834 quota_release_context(&qctx);
2839 static errcode_t set_error_behavior(ext2_filsys fs)
2842 short errors = fs->super->s_errors;
2844 arg = get_string_from_profile(fs_types, "errors", NULL);
2848 if (strcmp(arg, "continue") == 0)
2849 errors = EXT2_ERRORS_CONTINUE;
2850 else if (strcmp(arg, "remount-ro") == 0)
2851 errors = EXT2_ERRORS_RO;
2852 else if (strcmp(arg, "panic") == 0)
2853 errors = EXT2_ERRORS_PANIC;
2855 com_err(program_name, 0,
2856 _("bad error behavior in profile - %s"),
2859 return EXT2_ET_INVALID_ARGUMENT;
2864 if (errors_behavior)
2865 errors = errors_behavior;
2867 fs->super->s_errors = errors;
2871 int main (int argc, char *argv[])
2873 errcode_t retval = 0;
2875 badblocks_list bb_list = 0;
2876 unsigned int journal_blocks = 0;
2877 unsigned int i, checkinterval;
2883 char opt_string[40];
2885 int itable_zeroed = 0;
2888 setlocale(LC_MESSAGES, "");
2889 setlocale(LC_CTYPE, "");
2890 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2891 textdomain(NLS_CAT_NAME);
2892 set_com_err_gettext(gettext);
2896 #ifdef CONFIG_TESTIO_DEBUG
2897 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
2898 io_ptr = test_io_manager;
2899 test_io_backing_manager = unix_io_manager;
2902 io_ptr = unix_io_manager;
2904 if (undo_file != NULL || should_do_undo(device_name)) {
2905 retval = mke2fs_setup_tdb(device_name, &io_ptr);
2911 * Initialize the superblock....
2913 flags = EXT2_FLAG_EXCLUSIVE;
2915 flags |= EXT2_FLAG_DIRECT_IO;
2916 profile_get_boolean(profile, "options", "old_bitmaps", 0, 0,
2919 flags |= EXT2_FLAG_64BITS;
2921 * By default, we print how many inode tables or block groups
2922 * or whatever we've written so far. The quiet flag disables
2923 * this, along with a lot of other output.
2926 flags |= EXT2_FLAG_PRINT_PROGRESS;
2927 if (android_sparse_file) {
2928 char *android_sparse_params = malloc(strlen(device_name) + 48);
2930 if (!android_sparse_params) {
2931 com_err(program_name, ENOMEM, "%s",
2932 _("in malloc for android_sparse_params"));
2935 sprintf(android_sparse_params, "(%s):%u:%u",
2936 device_name, fs_param.s_blocks_count,
2937 1024 << fs_param.s_log_block_size);
2938 retval = ext2fs_initialize(android_sparse_params, flags,
2939 &fs_param, sparse_io_manager, &fs);
2940 free(android_sparse_params);
2942 retval = ext2fs_initialize(device_name, flags, &fs_param,
2945 com_err(device_name, retval, "%s",
2946 _("while setting up superblock"));
2949 fs->progress_ops = &ext2fs_numeric_progress_ops;
2951 /* Set the error behavior */
2952 retval = set_error_behavior(fs);
2956 /* Check the user's mkfs options for metadata checksumming */
2958 !ext2fs_has_feature_journal_dev(fs->super) &&
2959 ext2fs_has_feature_metadata_csum(fs->super)) {
2960 if (!ext2fs_has_feature_extents(fs->super))
2962 _("Extents are not enabled. The file extent "
2963 "tree can be checksummed, whereas block maps "
2964 "cannot. Not enabling extents reduces the "
2965 "coverage of metadata checksumming. "
2966 "Pass -O extents to rectify.\n"));
2967 if (!ext2fs_has_feature_64bit(fs->super))
2969 _("64-bit filesystem support is not enabled. "
2970 "The larger fields afforded by this feature "
2971 "enable full-strength checksumming. "
2972 "Pass -O 64bit to rectify.\n"));
2975 if (ext2fs_has_feature_csum_seed(fs->super) &&
2976 !ext2fs_has_feature_metadata_csum(fs->super)) {
2977 printf("%s", _("The metadata_csum_seed feature "
2978 "requires the metadata_csum feature.\n"));
2982 if (ext2fs_has_feature_inline_data(fs->super) &&
2983 ext2fs_has_feature_dirdata(fs->super)) {
2984 printf("%s", _("The dirdata feature can not enabled "
2985 "with inline data feature.\n"));
2989 /* Calculate journal blocks */
2990 if (!journal_device && ((journal_size) ||
2991 ext2fs_has_feature_journal(&fs_param)))
2992 journal_blocks = figure_journal_size(journal_size, fs);
2994 sprintf(opt_string, "tdb_data_size=%d", fs->blocksize <= 4096 ?
2995 32768 : fs->blocksize * 8);
2996 io_channel_set_options(fs->io, opt_string);
2998 sprintf(opt_string, "offset=%llu", offset);
2999 io_channel_set_options(fs->io, opt_string);
3002 /* Can't undo discard ... */
3003 if (!noaction && discard && dev_size && (io_ptr != undo_io_manager)) {
3004 retval = mke2fs_discard_device(fs);
3005 if (!retval && io_channel_discard_zeroes_data(fs->io)) {
3008 _("Discard succeeded and will return "
3009 "0s - skipping inode table wipe\n"));
3010 lazy_itable_init = 1;
3016 if (fs_param.s_flags & EXT2_FLAGS_TEST_FILESYS)
3017 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
3019 if (ext2fs_has_feature_flex_bg(&fs_param) ||
3020 ext2fs_has_feature_huge_file(&fs_param) ||
3021 ext2fs_has_feature_gdt_csum(&fs_param) ||
3022 ext2fs_has_feature_dir_nlink(&fs_param) ||
3023 ext2fs_has_feature_metadata_csum(&fs_param) ||
3024 ext2fs_has_feature_extra_isize(&fs_param))
3025 fs->super->s_kbytes_written = 1;
3028 * Wipe out the old on-disk superblock
3031 zap_sector(fs, 2, 6);
3034 * Parse or generate a UUID for the filesystem
3037 if ((strcasecmp(fs_uuid, "null") == 0) ||
3038 (strcasecmp(fs_uuid, "clear") == 0)) {
3039 uuid_clear(fs->super->s_uuid);
3040 } else if (strcasecmp(fs_uuid, "time") == 0) {
3041 uuid_generate_time(fs->super->s_uuid);
3042 } else if (strcasecmp(fs_uuid, "random") == 0) {
3043 uuid_generate(fs->super->s_uuid);
3044 } else if (uuid_parse(fs_uuid, fs->super->s_uuid) != 0) {
3045 com_err(device_name, 0, "could not parse UUID: %s\n",
3050 uuid_generate(fs->super->s_uuid);
3052 if (ext2fs_has_feature_csum_seed(fs->super))
3053 fs->super->s_checksum_seed = ext2fs_crc32c_le(~0,
3054 fs->super->s_uuid, sizeof(fs->super->s_uuid));
3056 ext2fs_init_csum_seed(fs);
3059 * Initialize the directory index variables
3061 hash_alg_str = get_string_from_profile(fs_types, "hash_alg",
3063 hash_alg = e2p_string2hash(hash_alg_str);
3065 fs->super->s_def_hash_version = (hash_alg >= 0) ? hash_alg :
3068 if (memcmp(fs_param.s_hash_seed, zero_buf,
3069 sizeof(fs_param.s_hash_seed)) != 0) {
3070 memcpy(fs->super->s_hash_seed, fs_param.s_hash_seed,
3071 sizeof(fs->super->s_hash_seed));
3073 uuid_generate((unsigned char *) fs->super->s_hash_seed);
3076 * Periodic checks can be enabled/disabled via config file.
3077 * Note we override the kernel include file's idea of what the default
3078 * check interval (never) should be. It's a good idea to check at
3079 * least *occasionally*, specially since servers will never rarely get
3080 * to reboot, since Linux is so robust these days. :-)
3082 * 180 days (six months) seems like a good value.
3084 #ifdef EXT2_DFL_CHECKINTERVAL
3085 #undef EXT2_DFL_CHECKINTERVAL
3087 #define EXT2_DFL_CHECKINTERVAL (86400L * 180L)
3089 if (get_bool_from_profile(fs_types, "enable_periodic_fsck", 0)) {
3090 fs->super->s_checkinterval = EXT2_DFL_CHECKINTERVAL;
3091 fs->super->s_max_mnt_count = EXT2_DFL_MAX_MNT_COUNT;
3093 * Add "jitter" to the superblock's check interval so that we
3094 * don't check all the filesystems at the same time. We use a
3095 * kludgy hack of using the UUID to derive a random jitter value
3097 for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++)
3098 val += fs->super->s_uuid[i];
3099 fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
3101 fs->super->s_max_mnt_count = -1;
3104 * Override the creator OS, if applicable
3106 if (creator_os && !set_os(fs->super, creator_os)) {
3107 com_err (program_name, 0, _("unknown os - %s"), creator_os);
3112 * For the Hurd, we will turn off filetype since it doesn't
3115 if (fs->super->s_creator_os == EXT2_OS_HURD)
3116 ext2fs_clear_feature_filetype(fs->super);
3119 * Set the volume label...
3122 memset(fs->super->s_volume_name, 0,
3123 sizeof(fs->super->s_volume_name));
3124 strncpy(fs->super->s_volume_name, volume_label,
3125 sizeof(fs->super->s_volume_name));
3129 * Set the last mount directory
3132 memset(fs->super->s_last_mounted, 0,
3133 sizeof(fs->super->s_last_mounted));
3134 strncpy(fs->super->s_last_mounted, mount_dir,
3135 sizeof(fs->super->s_last_mounted));
3138 /* Set current default encryption algorithms for data and
3139 * filename encryption */
3140 if (ext2fs_has_feature_encrypt(fs->super)) {
3141 fs->super->s_encrypt_algos[0] =
3142 EXT4_ENCRYPTION_MODE_AES_256_XTS;
3143 fs->super->s_encrypt_algos[1] =
3144 EXT4_ENCRYPTION_MODE_AES_256_CTS;
3147 if (ext2fs_has_feature_metadata_csum(fs->super))
3148 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
3150 if (!quiet || noaction)
3156 if (ext2fs_has_feature_journal_dev(fs->super)) {
3157 create_journal_dev(fs);
3159 exit(ext2fs_close_free(&fs) ? 1 : 0);
3162 if (bad_blocks_filename)
3163 read_bb_file(fs, &bb_list, bad_blocks_filename);
3165 test_disk(fs, &bb_list);
3166 handle_bad_blocks(fs, bb_list);
3168 fs->stride = fs_stride = fs->super->s_raid_stride;
3170 printf("%s", _("Allocating group tables: "));
3171 if (ext2fs_has_feature_flex_bg(fs->super) &&
3173 retval = packed_allocate_tables(fs);
3175 retval = ext2fs_allocate_tables(fs);
3177 com_err(program_name, retval, "%s",
3178 _("while trying to allocate filesystem tables"));
3182 printf("%s", _("done \n"));
3184 retval = ext2fs_convert_subcluster_bitmap(fs, &fs->block_map);
3186 com_err(program_name, retval, "%s",
3187 _("\n\twhile converting subcluster bitmap"));
3192 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
3193 printf(_("%s may be further corrupted by superblock rewrite\n"),
3196 proceed_question(proceed_delay);
3197 fs->super->s_state |= EXT2_ERROR_FS;
3198 fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
3200 * The command "mke2fs -S" is used to recover
3201 * corrupted file systems, so do not mark any of the
3202 * inodes as unused; we want e2fsck to consider all
3203 * inodes as potentially containing recoverable data.
3205 if (ext2fs_has_group_desc_csum(fs)) {
3206 for (i = 0; i < fs->group_desc_count; i++)
3207 ext2fs_bg_itable_unused_set(fs, i, 0);
3210 /* rsv must be a power of two (64kB is MD RAID sb alignment) */
3211 blk64_t rsv = 65536 / fs->blocksize;
3212 blk64_t blocks = ext2fs_blocks_count(fs->super);
3216 #ifdef ZAP_BOOTBLOCK
3217 zap_sector(fs, 0, 2);
3221 * Wipe out any old MD RAID (or other) metadata at the end
3222 * of the device. This will also verify that the device is
3223 * as large as we think. Be careful with very small devices.
3225 start = (blocks & ~(rsv - 1));
3229 retval = ext2fs_zero_blocks2(fs, start, blocks - start,
3233 com_err(program_name, retval,
3234 _("while zeroing block %llu at end of filesystem"),
3237 write_inode_tables(fs, lazy_itable_init, itable_zeroed);
3238 create_root_dir(fs);
3239 create_lost_and_found(fs);
3241 create_bad_block_inode(fs, bb_list);
3242 if (ext2fs_has_feature_resize_inode(fs->super)) {
3243 retval = ext2fs_create_resize_inode(fs);
3245 com_err("ext2fs_create_resize_inode", retval,
3247 _("while reserving blocks for online resize"));
3253 if (journal_device) {
3256 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
3258 proceed_question(proceed_delay);
3259 check_mount(journal_device, force, _("journal"));
3261 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
3262 EXT2_FLAG_JOURNAL_DEV_OK, 0,
3263 fs->blocksize, unix_io_manager, &jfs);
3265 com_err(program_name, retval,
3266 _("while trying to open journal device %s\n"),
3271 printf(_("Adding journal to device %s: "),
3275 retval = ext2fs_add_journal_device(fs, jfs);
3277 com_err (program_name, retval,
3278 _("\n\twhile trying to add journal to device %s"),
3283 printf("%s", _("done\n"));
3284 ext2fs_close_free(&jfs);
3285 free(journal_device);
3286 } else if ((journal_size) ||
3287 ext2fs_has_feature_journal(&fs_param)) {
3289 printf("%s", _("Skipping journal creation in super-only mode\n"));
3290 fs->super->s_journal_inum = EXT2_JOURNAL_INO;
3294 if (!journal_blocks) {
3295 ext2fs_clear_feature_journal(fs->super);
3299 printf(_("Creating journal (%u blocks): "),
3303 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
3307 com_err(program_name, retval, "%s",
3308 _("\n\twhile trying to create journal"));
3312 printf("%s", _("done\n"));
3316 ext2fs_has_feature_mmp(fs->super)) {
3317 retval = ext2fs_mmp_init(fs);
3319 fprintf(stderr, "%s",
3320 _("\nError while enabling multiple "
3321 "mount protection feature."));
3325 printf(_("Multiple mount protection is enabled "
3326 "with update interval %d seconds.\n"),
3327 fs->super->s_mmp_update_interval);
3330 if (ext2fs_has_feature_bigalloc(&fs_param))
3331 fix_cluster_bg_counts(fs);
3332 if (ext2fs_has_feature_quota(&fs_param))
3333 create_quota_inodes(fs);
3335 retval = mk_hugefiles(fs, device_name);
3337 com_err(program_name, retval, "while creating huge files");
3338 /* Copy files from the specified directory */
3341 printf("%s", _("Copying files into the device: "));
3343 retval = populate_fs(fs, EXT2_ROOT_INO, src_root_dir,
3346 com_err(program_name, retval, "%s",
3347 _("while populating file system"));
3350 printf("%s", _("done\n"));
3354 printf("%s", _("Writing superblocks and "
3355 "filesystem accounting information: "));
3356 checkinterval = fs->super->s_checkinterval;
3357 max_mnt_count = fs->super->s_max_mnt_count;
3358 retval = ext2fs_close_free(&fs);
3360 com_err(program_name, retval, "%s",
3361 _("while writing out and closing file system"));
3363 } else if (!quiet) {
3364 printf("%s", _("done\n\n"));
3365 if (!getenv("MKE2FS_SKIP_CHECK_MSG"))
3366 print_check_message(max_mnt_count, checkinterval);
3369 remove_error_table(&et_ext2_error_table);
3370 remove_error_table(&et_prof_error_table);
3371 profile_release(profile);
3372 for (i=0; fs_types[i]; i++)