diff options
Diffstat (limited to 'e2fsprogs')
| -rw-r--r-- | e2fsprogs/Config.in | 7 | ||||
| -rw-r--r-- | e2fsprogs/Makefile.in | 11 | ||||
| -rw-r--r-- | e2fsprogs/mke2fs.c | 1483 |
3 files changed, 1498 insertions, 3 deletions
diff --git a/e2fsprogs/Config.in b/e2fsprogs/Config.in index 0ffd51746..c4022bb89 100644 --- a/e2fsprogs/Config.in +++ b/e2fsprogs/Config.in @@ -17,6 +17,13 @@ config CONFIG_LSATTR help lsattr lists the file attributes on a second extended file system. +config CONFIG_MKE2FS + bool "mke2fs" + default n + help + mke2fs is used to create an ext2/ext3 filesystem. The normal compat + symlinks 'mkfs.ext2' and 'mkfs.ext3' are also provided. + config CONFIG_TUNE2FS bool "tune2fs (and e2label/findfs)" default n diff --git a/e2fsprogs/Makefile.in b/e2fsprogs/Makefile.in index 196172bcf..fa278a5cc 100644 --- a/e2fsprogs/Makefile.in +++ b/e2fsprogs/Makefile.in @@ -26,19 +26,23 @@ srcdir=$(top_srcdir)/e2fsprogs E2FSPROGS_CFLAGS := -I$(E2FSPROGS_DIR) -include $(E2FSPROGS_DIR)e2fsbb.h BLKID_SRC := cache.c dev.c devname.c devno.c getsize.c llseek.c probe.c \ - read.c resolve.c save.c tag.c + read.c resolve.c save.c tag.c resolve.c BLKID_SRCS := $(patsubst %,blkid/%, $(BLKID_SRC)) BLKID_OBJS := $(patsubst %.c,%.o, $(BLKID_SRCS)) E2P_SRC := fgetsetflags.c fgetsetversion.c pf.c iod.c mntopts.c \ - feature.c ls.c uuid.c pe.c ostype.c ps.c hashstr.c + feature.c ls.c uuid.c pe.c ostype.c ps.c hashstr.c \ + parse_num.c E2P_SRCS := $(patsubst %,e2p/%, $(E2P_SRC)) E2P_OBJS := $(patsubst %.c,%.o, $(E2P_SRCS)) EXT2FS_SRC := gen_bitmap.c bitops.c ismounted.c mkjournal.c unix_io.c \ llseek.c rw_bitmaps.c initialize.c bitmaps.c block.c \ ind_block.c inode.c freefs.c alloc_stats.c closefs.c \ - openfs.c io_manager.c finddev.c read_bb.c alloc.c badblocks.c + openfs.c io_manager.c finddev.c read_bb.c alloc.c badblocks.c \ + getsize.c getsectsize.c alloc_tables.c read_bb_file.c mkdir.c \ + bb_inode.c newdir.c alloc_sb.c lookup.c dirblock.c expanddir.c \ + dir_iterate.c link.c res_gdt.c EXT2FS_SRCS := $(patsubst %,ext2fs/%, $(EXT2FS_SRC)) EXT2FS_OBJS := $(patsubst %.c,%.o, $(EXT2FS_SRCS)) @@ -50,6 +54,7 @@ UUID_OBJS := $(patsubst %.c,%.o, $(UUID_SRCS)) E2FSPROGS-:= E2FSPROGS-$(CONFIG_CHATTR) += chattr.o $(E2P_OBJS) E2FSPROGS-$(CONFIG_LSATTR) += lsattr.o $(E2P_OBJS) +E2FSPROGS-$(CONFIG_MKE2FS) += mke2fs.o util.o $(E2P_OBJS) $(BLKID_OBJS) $(EXT2FS_OBJS) $(UUID_OBJS) E2FSPROGS-$(CONFIG_TUNE2FS) += tune2fs.o util.o $(E2P_OBJS) $(BLKID_OBJS) $(EXT2FS_OBJS) $(UUID_OBJS) libraries-y+=$(E2FSPROGS_DIR)$(E2FSPROGS_AR) diff --git a/e2fsprogs/mke2fs.c b/e2fsprogs/mke2fs.c new file mode 100644 index 000000000..6750867cf --- /dev/null +++ b/e2fsprogs/mke2fs.c @@ -0,0 +1,1483 @@ +/* + * mke2fs.c - Make a ext2fs filesystem. + * + * Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, + * 2003, 2004, 2005 by Theodore Ts'o. + * + * %Begin-Header% + * This file may be redistributed under the terms of the GNU Public + * License. + * %End-Header% + */ + +/* Usage: mke2fs [options] device + * + * The device may be a block device or a image of one, but this isn't + * enforced (but it's not much fun on a character device :-). + */ + +#include <stdio.h> +#include <string.h> +#include <fcntl.h> +#include <ctype.h> +#include <time.h> +#ifdef __linux__ +#include <sys/utsname.h> +#endif +#include <getopt.h> +#include <unistd.h> +#include <stdlib.h> +#include <errno.h> +#include <mntent.h> +#include <sys/ioctl.h> +#include <sys/types.h> + +#include "e2fsbb.h" +#include "ext2fs/ext2_fs.h" +#include "uuid/uuid.h" +#include "e2p/e2p.h" +#include "ext2fs/ext2fs.h" +#include "util.h" + +#define STRIDE_LENGTH 8 + +#ifndef __sparc__ +#define ZAP_BOOTBLOCK +#endif + +static const char * program_name = "mke2fs"; +static const char * device_name /* = NULL */; + +/* Command line options */ +static int cflag; +static int verbose; +static int quiet; +static int super_only; +static int force; +static int noaction; +static int journal_size; +static int journal_flags; +static char *bad_blocks_filename; +static __u32 fs_stride; + +static struct ext2_super_block param; +static char *creator_os; +static char *volume_label; +static char *mount_dir; +static char *journal_device; +static int sync_kludge; /* Set using the MKE2FS_SYNC env. option */ + +static int sys_page_size = 4096; +static int linux_version_code = 0; + +static int int_log2(int arg) +{ + int l = 0; + + arg >>= 1; + while (arg) { + l++; + arg >>= 1; + } + return l; +} + +static int int_log10(unsigned int arg) +{ + int l; + + for (l=0; arg ; l++) + arg = arg / 10; + return l; +} + +static int parse_version_number(const char *s) +{ + int major, minor, rev; + char *endptr; + const char *cp = s; + + if (!s) + return 0; + major = strtol(cp, &endptr, 10); + if (cp == endptr || *endptr != '.') + return 0; + cp = endptr + 1; + minor = strtol(cp, &endptr, 10); + if (cp == endptr || *endptr != '.') + return 0; + cp = endptr + 1; + rev = strtol(cp, &endptr, 10); + if (cp == endptr) + return 0; + return ((((major * 256) + minor) * 256) + rev); +} + + + +/* + * This function sets the default parameters for a filesystem + * + * The type is specified by the user. The size is the maximum size + * (in megabytes) for which a set of parameters applies, with a size + * of zero meaning that it is the default parameter for the type. + * Note that order is important in the table below. + */ +#define DEF_MAX_BLOCKSIZE -1 +static char default_str[] = "default"; +struct mke2fs_defaults { + const char *type; + int size; + int blocksize; + int inode_ratio; +} settings[] = { + { default_str, 0, 4096, 8192 }, + { default_str, 512, 1024, 4096 }, + { default_str, 3, 1024, 8192 }, + { "journal", 0, 4096, 8192 }, + { "news", 0, 4096, 4096 }, + { "largefile", 0, 4096, 1024 * 1024 }, + { "largefile4", 0, 4096, 4096 * 1024 }, + { 0, 0, 0, 0}, +}; + +static void set_fs_defaults(const char *fs_type, + struct ext2_super_block *super, + int blocksize, int sector_size, + int *inode_ratio) +{ + int megs; + int ratio = 0; + struct mke2fs_defaults *p; + int use_bsize = 1024; + + megs = super->s_blocks_count * (EXT2_BLOCK_SIZE(super) / 1024) / 1024; + if (inode_ratio) + ratio = *inode_ratio; + if (!fs_type) + fs_type = default_str; + for (p = settings; p->type; p++) { + if ((strcmp(p->type, fs_type) != 0) && + (strcmp(p->type, default_str) != 0)) + continue; + if ((p->size != 0) && (megs > p->size)) + continue; + if (ratio == 0) + *inode_ratio = p->inode_ratio < blocksize ? + blocksize : p->inode_ratio; + use_bsize = p->blocksize; + } + if (blocksize <= 0) { + if (use_bsize == DEF_MAX_BLOCKSIZE) { + use_bsize = sys_page_size; + if ((linux_version_code < (2*65536 + 6*256)) && + (use_bsize > 4096)) + use_bsize = 4096; + } + if (sector_size && use_bsize < sector_size) + use_bsize = sector_size; + if ((blocksize < 0) && (use_bsize < (-blocksize))) + use_bsize = -blocksize; + blocksize = use_bsize; + super->s_blocks_count /= blocksize / 1024; + } + super->s_log_frag_size = super->s_log_block_size = + int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE); +} + + +/* + * Helper function for read_bb_file and test_disk + */ +static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk) +{ + bb_error_msg("Bad block %u out of range; ignored", blk); + return; +} + +/* + * Reads the bad blocks list from a file + */ +static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list, + const char *bad_blocks_file) +{ + FILE *f; + errcode_t retval; + + f = fopen(bad_blocks_file, "r"); + if (!f) { + bb_perror_msg_and_die("Could not read bad blocks file %s", bad_blocks_file); + } + retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block); + fclose (f); + if (retval) { + bb_error_msg_and_die("Could not read bad blocks list"); + } +} + +/* + * Runs the badblocks program to test the disk + */ +static void test_disk(ext2_filsys fs, badblocks_list *bb_list) +{ + FILE *f; + errcode_t retval; + char buf[1024]; + + sprintf(buf, "badblocks -b %d %s%s%s %d", fs->blocksize, + quiet ? "" : "-s ", (cflag > 1) ? "-w " : "", + fs->device_name, fs->super->s_blocks_count); + if (verbose) + printf(_("Running command: %s\n"), buf); + f = popen(buf, "r"); + if (!f) { + bb_perror_msg_and_die("Could not run '%s'", buf); + } + retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block); + pclose(f); + if (retval) { + bb_error_msg_and_die( + "Could not get list of bad blocks from program"); + } +} + +static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list) +{ + dgrp_t i; + blk_t j; + unsigned must_be_good; + blk_t blk; + badblocks_iterate bb_iter; + errcode_t retval; + blk_t group_block; + int group; + int group_bad; + + if (!bb_list) + return; + + /* + * The primary superblock and group descriptors *must* be + * good; if not, abort. + */ + must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks; + for (i = fs->super->s_first_data_block; i <= must_be_good; i++) { + if (ext2fs_badblocks_list_test(bb_list, i)) { + bb_error_msg_and_die( + "Block %d in primary superblock/group descriptor area bad\n" + "Blocks %d through %d must be good in order to build a filesystem\n" + "Aborting ...", i, fs->super->s_first_data_block, must_be_good); + } + } + + /* + * See if any of the bad blocks are showing up in the backup + * superblocks and/or group descriptors. If so, issue a + * warning and adjust the block counts appropriately. + */ + group_block = fs->super->s_first_data_block + + fs->super->s_blocks_per_group; + + for (i = 1; i < fs->group_desc_count; i++) { + group_bad = 0; + for (j=0; j < fs->desc_blocks+1; j++) { + if (ext2fs_badblocks_list_test(bb_list, + group_block + j)) { + if (!group_bad) + bb_error_msg( + "Warning: the backup superblock/group descriptors at block %d contain\n" + " bad blocks\n", group_block); + group_bad++; + group = ext2fs_group_of_blk(fs, group_block+j); + fs->group_desc[group].bg_free_blocks_count++; + fs->super->s_free_blocks_count++; + } + } + group_block += fs->super->s_blocks_per_group; + } + + /* + * Mark all the bad blocks as used... + */ + retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter); + if (retval) { + bb_error_msg_and_die("while marking bad blocks as used"); + } + while (ext2fs_badblocks_list_iterate(bb_iter, &blk)) + ext2fs_mark_block_bitmap(fs->block_map, blk); + ext2fs_badblocks_list_iterate_end(bb_iter); +} + +/* + * These functions implement a generalized progress meter. + */ +struct progress_struct { + char format[20]; + char backup[80]; + __u32 max; + int skip_progress; +}; + +static void progress_init(struct progress_struct *progress, + const char *label,__u32 max) +{ + int i; + + memset(progress, 0, sizeof(struct progress_struct)); + if (quiet) + return; + + /* + * Figure out how many digits we need + */ + i = int_log10(max); + sprintf(progress->format, "%%%dd/%%%dld", i, i); + memset(progress->backup, '\b', sizeof(progress->backup)-1); + progress->backup[sizeof(progress->backup)-1] = 0; + if ((2*i)+1 < (int) sizeof(progress->backup)) + progress->backup[(2*i)+1] = 0; + progress->max = max; + + progress->skip_progress = 0; + if (getenv("MKE2FS_SKIP_PROGRESS")) + progress->skip_progress++; + + fputs(label, stdout); + fflush(stdout); +} + +static void progress_update(struct progress_struct *progress, __u32 val) +{ + if ((progress->format[0] == 0) || progress->skip_progress) + return; + printf(progress->format, val, progress->max); + fputs(progress->backup, stdout); +} + +static void progress_close(struct progress_struct *progress) +{ + if (progress->format[0] == 0) + return; + fputs(_("done \n"), stdout); +} + + +/* + * Helper function which zeros out _num_ blocks starting at _blk_. In + * case of an error, the details of the error is returned via _ret_blk_ + * and _ret_count_ if they are non-NULL pointers. Returns 0 on + * success, and an error code on an error. + * + * As a special case, if the first argument is NULL, then it will + * attempt to free the static zeroizing buffer. (This is to keep + * programs that check for memory leaks happy.) + */ +static errcode_t zero_blocks(ext2_filsys fs, blk_t blk, int num, + struct progress_struct *progress, + blk_t *ret_blk, int *ret_count) +{ + int j, count, next_update, next_update_incr; + static char *buf; + errcode_t retval; + + /* If fs is null, clean up the static buffer and return */ + if (!fs) { + if (buf) { + free(buf); + buf = 0; + } + return 0; + } + /* Allocate the zeroizing buffer if necessary */ + if (!buf) { + buf = xmalloc(fs->blocksize * STRIDE_LENGTH); + memset(buf, 0, fs->blocksize * STRIDE_LENGTH); + } + /* OK, do the write loop */ + next_update = 0; + next_update_incr = num / 100; + if (next_update_incr < 1) + next_update_incr = 1; + for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) { + count = num - j; + if (count > STRIDE_LENGTH) + count = STRIDE_LENGTH; + retval = io_channel_write_blk(fs->io, blk, count, buf); + if (retval) { + if (ret_count) + *ret_count = count; + if (ret_blk) + *ret_blk = blk; + return retval; + } + if (progress && j > next_update) { + next_update += num / 100; + progress_update(progress, blk); + } + } + return 0; +} + +static void write_inode_tables(ext2_filsys fs) +{ + errcode_t retval; + blk_t blk; + dgrp_t i; + int num; + struct progress_struct progress; + + if (quiet) + memset(&progress, 0, sizeof(progress)); + else + progress_init(&progress, _("Writing inode tables: "), + fs->group_desc_count); + + for (i = 0; i < fs->group_desc_count; i++) { + progress_update(&progress, i); + + blk = fs->group_desc[i].bg_inode_table; + num = fs->inode_blocks_per_group; + + retval = zero_blocks(fs, blk, num, 0, &blk, &num); + if (retval) { + bb_error_msg_and_die( + "\nCould not write %d blocks " + "in inode table starting at %d.", + num, blk); + } + if (sync_kludge) { + if (sync_kludge == 1) + sync(); + else if ((i % sync_kludge) == 0) + sync(); + } + } + zero_blocks(0, 0, 0, 0, 0, 0); + progress_close(&progress); +} + +static void create_root_dir(ext2_filsys fs) +{ + errcode_t retval; + struct ext2_inode inode; + + retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0); + if (retval) { + bb_error_msg_and_die("Could not create root dir"); + } + if (geteuid()) { + retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode); + if (retval) { + bb_error_msg_and_die("Could not read root inode"); + } + inode.i_uid = getuid(); + if (inode.i_uid) + inode.i_gid = getgid(); + retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode); + if (retval) { + bb_error_msg_and_die("Could not set root inode ownership"); + } + } +} + +static void create_lost_and_found(ext2_filsys fs) +{ + errcode_t retval; + ext2_ino_t ino; + const char *name = "lost+found"; + int i; + int lpf_size = 0; + + fs->umask = 077; + retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name); + if (retval) { + bb_error_msg_and_die("Could not create lost+found"); + } + + retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino); + if (retval) { + bb_error_msg_and_die("Could not look up lost+found"); + } + + for (i=1; i < EXT2_NDIR_BLOCKS; i++) { + if ((lpf_size += fs->blocksize) >= 16*1024) + break; + retval = ext2fs_expand_dir(fs, ino); + if (retval) { + bb_error_msg_and_die("Could not expand lost+found"); + } + } +} + +static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list) +{ + errcode_t retval; + + ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO); + fs->group_desc[0].bg_free_inodes_count--; + fs->super->s_free_inodes_count--; + retval = ext2fs_update_bb_inode(fs, bb_list); + if (retval) { + bb_error_msg_and_die("Could not set bad block inode"); + } + +} + +static void reserve_inodes(ext2_filsys fs) +{ + ext2_ino_t i; + int group; + + for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) { + ext2fs_mark_inode_bitmap(fs->inode_map, i); + group = ext2fs_group_of_ino(fs, i); + fs->group_desc[group].bg_free_inodes_count--; + fs->super->s_free_inodes_count--; + } + ext2fs_mark_ib_dirty(fs); +} + +#define BSD_DISKMAGIC (0x82564557UL) /* The disk magic number */ +#define BSD_MAGICDISK (0x57455682UL) /* The disk magic number reversed */ +#define BSD_LABEL_OFFSET 64 + +static void zap_sector(ext2_filsys fs, int sect, int nsect) +{ + char *buf; + int retval; + unsigned int *magic; + + buf = malloc(512*nsect); + if (!buf) { + printf(_("Out of memory erasing sectors %d-%d\n"), + sect, sect + nsect - 1); + exit(1); + } + + if (sect == 0) { + /* Check for a BSD disklabel, and don't erase it if so */ + retval = io_channel_read_blk(fs->io, 0, -512, buf); + if (retval) + bb_error_msg("Warning: could not read block 0"); + else { + magic = (unsigned int *) (buf + BSD_LABEL_OFFSET); + if ((*magic == BSD_DISKMAGIC) || + (*magic == BSD_MAGICDISK)) + return; + } + } + + memset(buf, 0, 512*nsect); + io_channel_set_blksize(fs->io, 512); + retval = io_channel_write_blk(fs->io, sect, -512*nsect, buf); + io_channel_set_blksize(fs->io, fs->blocksize); + free(buf); + if (retval) + bb_error_msg("Warning: could not erase sector %d", sect); +} + +static void create_journal_dev(ext2_filsys fs) +{ + struct progress_struct progress; + errcode_t retval; + char *buf; + blk_t blk; + int count; + + retval = ext2fs_create_journal_superblock(fs, + fs->super->s_blocks_count, 0, &buf); + if (retval) { + bb_error_msg_and_die("Could not init journal superblock"); + } + if (quiet) + memset(&progress, 0, sizeof(progress)); + else + progress_init(&progress, _("Zeroing journal device: "), + fs->super->s_blocks_count); + + retval = zero_blocks(fs, 0, fs->super->s_blocks_count, + &progress, &blk, &count); + if (retval) { + bb_error_msg_and_die("Could not zero journal device (block %u, count %d)", + blk, count); + } + zero_blocks(0, 0, 0, 0, 0, 0); + + retval = io_channel_write_blk(fs->io, + fs->super->s_first_data_block+1, + 1, buf); + if (retval) { + bb_error_msg_and_die("Could not write journal superblock"); + } + progress_close(&progress); +} + +static void show_stats(ext2_filsys fs) +{ + struct ext2_super_block *s = fs->super; + char buf[80]; + char *os; + blk_t group_block; + dgrp_t i; + int need, col_left; + + if (param.s_blocks_count != s->s_blocks_count) + bb_error_msg("warning: %d blocks unused\n", + param.s_blocks_count - s->s_blocks_count); + + memset(buf, 0, sizeof(buf)); + strncpy(buf, s->s_volume_name, sizeof(s->s_volume_name)); + printf("Filesystem label=%s\n", buf); + fputs(_("OS type: "), stdout); + os = e2p_os2string(fs->super->s_creator_os); + fputs(os, stdout); + free(os); + printf("\n"); + printf(_("Block size=%u (log=%u)\n"), fs->blocksize, + s->s_log_block_size); + printf(_("Fragment size=%u (log=%u)\n"), fs->fragsize, + s->s_log_frag_size); + printf(_("%u inodes, %u blocks\n"), s->s_inodes_count, + s->s_blocks_count); + printf(_("%u blocks (%2.2f%%) reserved for the super user\n"), + s->s_r_blocks_count, + 100.0 * s->s_r_blocks_count / s->s_blocks_count); + printf(_("First data block=%u\n"), s->s_first_data_block); + if (s->s_reserved_gdt_blocks) + printf(_("Maximum filesystem blocks=%lu\n"), + (s->s_reserved_gdt_blocks + fs->desc_blocks) * + (fs->blocksize / sizeof(struct ext2_group_desc)) * + s->s_blocks_per_group); + if (fs->group_desc_count > 1) + printf(_("%u block groups\n"), fs->group_desc_count); + else + printf(_("%u block group\n"), fs->group_desc_count); + printf(_("%u blocks per group, %u fragments per group\n"), + s->s_blocks_per_group, s->s_frags_per_group); + printf(_("%u inodes per group\n"), s->s_inodes_per_group); + + if (fs->group_desc_count == 1) { + printf("\n"); + return; + } + + printf(_("Superblock backups stored on blocks: ")); + group_block = s->s_first_data_block; + col_left = 0; + for (i = 1; i < fs->group_desc_count; i++) { + group_block += s->s_blocks_per_group; + if (!ext2fs_bg_has_super(fs, i)) + continue; + if (i != 1) + printf(", "); + need = int_log10(group_block) + 2; + if (need > col_left) { + printf("\n\t"); + col_left = 72; + } + col_left -= need; + printf("%u", group_block); + } + printf("\n\n"); +} + +/* + * Set the S_CREATOR_OS field. Return true if OS is known, + * otherwise, 0. + */ +static int set_os(struct ext2_super_block *sb, char *os) +{ + if (isdigit (*os)) + sb->s_creator_os = atoi (os); + else if (strcasecmp(os, "linux") == 0) + sb->s_creator_os = EXT2_OS_LINUX; + else if (strcasecmp(os, "GNU") == 0 || strcasecmp(os, "hurd") == 0) + sb->s_creator_os = EXT2_OS_HURD; + else if (strcasecmp(os, "masix") == 0) + sb->s_creator_os = EXT2_OS_MASIX; + else if (strcasecmp(os, "freebsd") == 0) + sb->s_creator_os = EXT2_OS_FREEBSD; + else if (strcasecmp(os, "lites") == 0) + sb->s_creator_os = EXT2_OS_LITES; + else + return 0; + + return 1; +} + +#define PATH_SET "PATH=/sbin" + +static void parse_extended_opts(struct ext2_super_block *sb_param, + const char *opts) +{ + char *buf, *token, *next, *p, *arg; + int len; + int r_usage = 0; + + len = strlen(opts); + buf = xmalloc(len+1); + strcpy(buf, opts); + for (token = buf; token && *token; token = next) { + p = strchr(token, ','); + next = 0; + if (p) { + *p = 0; + next = p+1; + } + arg = strchr(token, '='); + if (arg) { + *arg = 0; + arg++; + } + if (strcmp(token, "stride") == 0) { + if (!arg) { + r_usage++; + continue; + } + fs_stride = strtoul(arg, &p, 0); + if (*p || (fs_stride == 0)) { + bb_error_msg("Invalid stride parameter"); + r_usage++; + continue; + } + } else if (!strcmp(token, "resize")) { + unsigned long resize, bpg, rsv_groups; + unsigned long group_desc_count, desc_blocks; + unsigned int gdpb, blocksize; + int rsv_gdb; + + if (!arg) { + r_usage++; + continue; + } + + resize = parse_num_blocks(arg, + sb_param->s_log_block_size); + + if (resize == 0) { + bb_error_msg("Invalid resize parameter: %s", arg); + r_usage++; + continue; + } + if (resize <= sb_param->s_blocks_count) { + bb_error_msg("The resize maximum must be greater than the filesystem size"); + r_usage++; + continue; + } + + blocksize = EXT2_BLOCK_SIZE(sb_param); + bpg = sb_param->s_blocks_per_group; + if (!bpg) + bpg = blocksize * 8; + gdpb = blocksize / sizeof(struct ext2_group_desc); + group_desc_count = (sb_param->s_blocks_count + + bpg - 1) / bpg; + desc_blocks = (group_desc_count + + gdpb - 1) / gdpb; + rsv_groups = (resize + bpg - 1) / bpg; + rsv_gdb = (rsv_groups + gdpb - 1) / gdpb - + desc_blocks; + if (rsv_gdb > EXT2_ADDR_PER_BLOCK(sb_param)) + rsv_gdb = EXT2_ADDR_PER_BLOCK(sb_param); + + if (rsv_gdb > 0) { + sb_param->s_feature_compat |= + EXT2_FEATURE_COMPAT_RESIZE_INODE; + + sb_param->s_reserved_gdt_blocks = rsv_gdb; + } + } else + r_usage++; + } + if (r_usage) { + bb_error_msg_and_die( + "\nBad options specified.\n\n" + "Options are separated by commas, " + "and may take an argument which\n" + "\tis set off by an equals ('=') sign.\n\n" + "Valid raid options are:\n" + "\tstride=<stride length in blocks>\n" + "\tresize=<resize maximum size in blocks>\n"); + } +} + +static __u32 ok_features[3] = { + EXT3_FEATURE_COMPAT_HAS_JOURNAL | + EXT2_FEATURE_COMPAT_RESIZE_INODE | + EXT2_FEATURE_COMPAT_DIR_INDEX, /* Compat */ + EXT2_FEATURE_INCOMPAT_FILETYPE| /* Incompat */ + EXT3_FEATURE_INCOMPAT_JOURNAL_DEV| + EXT2_FEATURE_INCOMPAT_META_BG, + EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER /* R/O compat */ +}; + + +static void PRS(int argc, char *argv[]) +{ + int b, c; + int size; + char * tmp; + int blocksize = 0; + int inode_ratio = 0; + int inode_size = 0; + int reserved_ratio = 5; + int sector_size = 0; + int show_version_only = 0; + ext2_ino_t num_inodes = 0; + errcode_t retval; + char * oldpath = getenv("PATH"); + char * extended_opts = 0; + const char * fs_type = 0; + blk_t dev_size; +#ifdef __linux__ + struct utsname ut; +#endif + long sysval; + + /* Update our PATH to include /sbin */ + if (oldpath) { + char *newpath; + + newpath = malloc(sizeof (PATH_SET) + 1 + strlen (oldpath)); + strcpy (newpath, PATH_SET); + strcat (newpath, ":"); + strcat (newpath, oldpath); + putenv (newpath); + } else + putenv (PATH_SET); + + tmp = getenv("MKE2FS_SYNC"); + if (tmp) + sync_kludge = atoi(tmp); + + /* Determine the system page size if possible */ +#if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE)) +#define _SC_PAGESIZE _SC_PAGE_SIZE +#endif +#ifdef _SC_PAGESIZE + sysval = sysconf(_SC_PAGESIZE); + if (sysval > 0) + sys_page_size = sysval; +#endif /* _SC_PAGESIZE */ + + setbuf(stdout, NULL); + setbuf(stderr, NULL); + memset(¶m, 0, sizeof(struct ext2_super_block)); + param.s_rev_level = 1; /* Create revision 1 filesystems now */ + param.s_feature_incompat |= EXT2_FEATURE_INCOMPAT_FILETYPE; + param.s_feature_ro_compat |= EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; +#if 0 + param.s_feature_compat |= EXT2_FEATURE_COMPAT_DIR_INDEX; +#endif + +#ifdef __linux__ + if (uname(&ut)) { + perror("uname"); + exit(1); + } + linux_version_code = parse_version_number(ut.release); + if (linux_version_code && linux_version_code < (2*65536 + 2*256)) { + param.s_rev_level = 0; + param.s_feature_incompat = 0; + param.s_feature_compat = 0; + param.s_feature_ro_compat = 0; + } +#endif + + if (argc && *argv) { + program_name = basename(*argv); + + /* If called as mkfs.ext3, create a journal inode */ + if (!strcmp(*argv + strlen(*argv) - 9, "mkfs.ext3")) + journal_size = -1; + } + + while ((c = getopt (argc, argv, + "b:cE:f:g:i:jl:m:no:qr:R:s:tvI:J:ST:FL:M:N:O:V")) != EOF) { + switch (c) { + case 'b': + blocksize = strtol(optarg, &tmp, 0); + b = (blocksize > 0) ? blocksize : -blocksize; + if (b < EXT2_MIN_BLOCK_SIZE || + b > EXT2_MAX_BLOCK_SIZE || *tmp) { + bb_error_msg_and_die("bad block size - %s", optarg); + } + if (blocksize > 4096) + bb_error_msg( + "Warning: blocksize %d not usable on most systems", + blocksize); + if (blocksize > 0) + param.s_log_block_size = + int_log2(blocksize >> + EXT2_MIN_BLOCK_LOG_SIZE); + break; + case 'c': /* Check for bad blocks */ + case 't': /* deprecated */ + cflag++; + break; + case 'f': + size = strtoul(optarg, &tmp, 0); + if (size < EXT2_MIN_BLOCK_SIZE || + size > EXT2_MAX_BLOCK_SIZE || *tmp) { + bb_error_msg_and_die("bad fragment size - %s", optarg); + } + param.s_log_frag_size = + int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE); + bb_error_msg( + "Warning: fragments not supported. " + "Ignoring -f option"); + break; + case 'g': + param.s_blocks_per_group = strtoul(optarg, &tmp, 0); + if (*tmp) { + bb_error_msg_and_die("Illegal number for blocks per group"); + } + if ((param.s_blocks_per_group % 8) != 0) { + bb_error_msg_and_die("blocks per group must be multiple of 8"); + } + break; + case 'i': + inode_ratio = strtoul(optarg, &tmp, 0); + if (inode_ratio < EXT2_MIN_BLOCK_SIZE || + inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024 || + *tmp) { + bb_error_msg_and_die("bad inode ratio %s (min %d/max %d", + optarg, EXT2_MIN_BLOCK_SIZE, + EXT2_MAX_BLOCK_SIZE); + } + break; + case 'J': + parse_journal_opts(&journal_device, &journal_flags, &journal_size, optarg); + break; + case 'j': + param.s_feature_compat |= + EXT3_FEATURE_COMPAT_HAS_JOURNAL; + if (!journal_size) + journal_size = -1; + break; + case 'l': + bad_blocks_filename = xmalloc(strlen(optarg)+1); + strcpy(bad_blocks_filename, optarg); + break; + case 'm': + reserved_ratio = strtoul(optarg, &tmp, 0); + if (reserved_ratio > 50 || *tmp) { + bb_error_msg_and_die("bad reserved blocks percent - %s", optarg); + } + break; + case 'n': + noaction++; + break; + case 'o': + creator_os = optarg; + break; + case 'r': + param.s_rev_level = atoi(optarg); + if (param.s_rev_level == EXT2_GOOD_OLD_REV) { + param.s_feature_incompat = 0; + param.s_feature_compat = 0; + param.s_feature_ro_compat = 0; + } + break; + case 's': /* deprecated */ + if (atoi(optarg)) + param.s_feature_ro_compat |= + EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; + else + param.s_feature_ro_compat &= + ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER; + break; +#ifdef EXT2_DYNAMIC_REV + case 'I': + inode_size = strtoul(optarg, &tmp, 0); + if (*tmp) { + bb_error_msg_and_die("bad inode size - %s", optarg); + } + break; +#endif + case 'N': + num_inodes = atoi(optarg); + break; + case 'v': + verbose = 1; + break; + case 'q': + quiet = 1; + break; + case 'F': + force = 1; + break; + case 'L': + volume_label = optarg; + break; + case 'M': + mount_dir = optarg; + break; + case 'O': + if (!strcmp(optarg, "none")) { + param.s_feature_compat = 0; + param.s_feature_incompat = 0; + param.s_feature_ro_compat = 0; + break; + } + if (e2p_edit_feature(optarg, + ¶m.s_feature_compat, + ok_features)) { + bb_error_msg_and_die("Invalid filesystem option set: %s", optarg); + } + break; + case 'E': + case 'R': + extended_opts = optarg; + break; + case 'S': + super_only = 1; + break; + case 'T': + fs_type = optarg; + break; + case 'V': + /* Print version number and exit */ + show_version_only++; + break; + default: + bb_show_usage(); + } + } + if ((optind == argc) && !show_version_only) + bb_show_usage(); + device_name = argv[optind++]; + + if (!quiet || show_version_only) + bb_error_msg("mke2fs %s (%s)", E2FSPROGS_VERSION, + E2FSPROGS_DATE); + + if (show_version_only) { + exit(0); + } + + /* + * If there's no blocksize specified and there is a journal + * device, use it to figure out the blocksize + */ + if (blocksize <= 0 && journal_device) { + ext2_filsys jfs; + io_manager io_ptr; + +#ifdef CONFIG_TESTIO_DEBUG + io_ptr = test_io_manager; + test_io_backing_manager = unix_io_manager; +#else + io_ptr = unix_io_manager; +#endif + retval = ext2fs_open(journal_device, + EXT2_FLAG_JOURNAL_DEV_OK, 0, + 0, io_ptr, &jfs); + if (retval) { + bb_error_msg_and_die("Could not open journal device %s", journal_device); + } + if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) { + bb_error_msg_and_die( + "Journal dev blocksize (%d) smaller than " + "minimum blocksize %d\n", jfs->blocksize, + -blocksize); + } + blocksize = jfs->blocksize; + param.s_log_block_size = + int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE); + ext2fs_close(jfs); + } + + if (blocksize > sys_page_size) { + if (!force) { + bb_error_msg("%d-byte blocks too big for system (max %d)", + blocksize, sys_page_size); + proceed_question(); + } + bb_error_msg( + "Warning: %d-byte blocks too big for system " + "(max %d), forced to continue", + blocksize, sys_page_size); + } + if ((blocksize > 4096) && + (param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) + bb_error_msg( + "\nWarning: some 2.4 kernels do not support " + "blocksizes greater than 4096 \n\tusing ext3." + " Use -b 4096 if this is an issue for you\n"); + + if (optind < argc) { + param.s_blocks_count = parse_num_blocks(argv[optind++], + param.s_log_block_size); + if (!param.s_blocks_count) { + bb_error_msg_and_die("bad blocks count - %s", argv[optind - 1]); + } + } + if (optind < argc) + bb_show_usage(); + + if (param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { + if (!fs_type) + fs_type = "journal"; + reserved_ratio = 0; + param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV; + param.s_feature_compat = 0; + param.s_feature_ro_compat = 0; + } + if (param.s_rev_level == EXT2_GOOD_OLD_REV && + (param.s_feature_compat || param.s_feature_ro_compat || + param.s_feature_incompat)) + param.s_rev_level = 1; /* Create a revision 1 filesystem */ + + if (!force) + check_plausibility(device_name); + check_mount(device_name, force, _("filesystem")); + + param.s_log_frag_size = param.s_log_block_size; + + if (noaction && param.s_blocks_count) { + dev_size = param.s_blocks_count; + retval = 0; + } else { + retry: + retval = ext2fs_get_device_size(device_name, + EXT2_BLOCK_SIZE(¶m), + &dev_size); + if ((retval == EFBIG) && + (blocksize == 0) && + (param.s_log_block_size == 0)) { + param.s_log_block_size = 2; + blocksize = 4096; + goto retry; + } + } + + if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) { + bb_error_msg_and_die("Could not determine filesystem size"); + } + if (!param.s_blocks_count) { + if (retval == EXT2_ET_UNIMPLEMENTED) { + bb_error_msg_and_die( + "Couldn't determine device size; you " + "must specify\nthe size of the " + "filesystem"); + } else { + if (dev_size == 0) { + bb_error_msg_and_die( + "Device size reported to be zero. " + "Invalid partition specified, or\n\t" + "partition table wasn't reread " + "after running fdisk, due to\n\t" + "a modified partition being busy " + "and in use. You may need to reboot\n\t" + "to re-read your partition table.\n" + ); + } + param.s_blocks_count = dev_size; + if (sys_page_size > EXT2_BLOCK_SIZE(¶m)) + param.s_blocks_count &= ~((sys_page_size / + EXT2_BLOCK_SIZE(¶m))-1); + } + + } else if (!force && (param.s_blocks_count > dev_size)) { + bb_error_msg("Filesystem larger than apparent device size"); + proceed_question(); + } + + /* + * If the user asked for HAS_JOURNAL, then make sure a journal + * gets created. + */ + if ((param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) && + !journal_size) + journal_size = -1; + + /* Set first meta blockgroup via an environment variable */ + /* (this is mostly for debugging purposes) */ + if ((param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) && + ((tmp = getenv("MKE2FS_FIRST_META_BG")))) + param.s_first_meta_bg = atoi(tmp); + + /* Get the hardware sector size, if available */ + retval = ext2fs_get_device_sectsize(device_name, §or_size); + if (retval) { + bb_error_msg_and_die("Could not determine hardware sector size"); + } + + if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL) + sector_size = atoi(tmp); + + set_fs_defaults(fs_type, ¶m, blocksize, sector_size, &inode_ratio); + blocksize = EXT2_BLOCK_SIZE(¶m); + + if (extended_opts) + parse_extended_opts(¶m, extended_opts); + + /* Since sparse_super is the default, we would only have a problem + * here if it was explicitly disabled. + */ + if ((param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) && + !(param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) { + bb_error_msg_and_die("reserved online resize blocks not supported " + "on non-sparse filesystem"); + } + + if (param.s_blocks_per_group) { + if (param.s_blocks_per_group < 256 || + param.s_blocks_per_group > 8 * (unsigned) blocksize) { + bb_error_msg_and_die("blocks per group count out of range"); + } + } + + if (inode_size) { + if (inode_size < EXT2_GOOD_OLD_INODE_SIZE || + inode_size > EXT2_BLOCK_SIZE(¶m) || + inode_size & (inode_size - 1)) { + bb_error_msg_and_die("bad inode size %d (min %d/max %d)", + inode_size, EXT2_GOOD_OLD_INODE_SIZE, + blocksize); + } + if (inode_size != EXT2_GOOD_OLD_INODE_SIZE) + bb_error_msg( + "Warning: %d-byte inodes not usable on most systems", + inode_size); + param.s_inode_size = inode_size; + } + + /* + * Calculate number of inodes based on the inode ratio + */ + param.s_inodes_count = num_inodes ? num_inodes : + ((__u64) param.s_blocks_count * blocksize) + / inode_ratio; + + /* + * Calculate number of blocks to reserve + */ + param.s_r_blocks_count = (param.s_blocks_count * reserved_ratio) / 100; +} + +int mke2fs_main (int argc, char *argv[]) +{ + errcode_t retval = 0; + ext2_filsys fs; + badblocks_list bb_list = 0; + int journal_blocks; + unsigned int i; + int val; + io_manager io_ptr; + +#ifdef ENABLE_NLS + setlocale(LC_MESSAGES, ""); + setlocale(LC_CTYPE, ""); + bindtextdomain(NLS_CAT_NAME, LOCALEDIR); + textdomain(NLS_CAT_NAME); +#endif + PRS(argc, argv); + +#ifdef CONFIG_TESTIO_DEBUG + io_ptr = test_io_manager; + test_io_backing_manager = unix_io_manager; +#else + io_ptr = unix_io_manager; +#endif + + /* + * Initialize the superblock.... + */ + retval = ext2fs_initialize(device_name, 0, ¶m, + io_ptr, &fs); + if (retval) { + bb_error_msg_and_die("Could not set up superblock"); + } + + /* + * Wipe out the old on-disk superblock + */ + if (!noaction) + zap_sector(fs, 2, 6); + + /* + * Generate a UUID for it... + */ + uuid_generate(fs->super->s_uuid); + + /* + * Initialize the directory index variables + */ + fs->super->s_def_hash_version = EXT2_HASH_TEA; + uuid_generate((unsigned char *) fs->super->s_hash_seed); + + /* + * Add "jitter" to the superblock's check interval so that we + * don't check all the filesystems at the same time. We use a + * kludgy hack of using the UUID to derive a random jitter value. + */ + for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++) + val += fs->super->s_uuid[i]; + fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT; + + /* + * Override the creator OS, if applicable + */ + if (creator_os && !set_os(fs->super, creator_os)) { + bb_error_msg_and_die("unknown os - %s", creator_os); + } + + /* + * For the Hurd, we will turn off filetype since it doesn't + * support it. + */ + if (fs->super->s_creator_os == EXT2_OS_HURD) + fs->super->s_feature_incompat &= + ~EXT2_FEATURE_INCOMPAT_FILETYPE; + + /* + * Set the volume label... + */ + if (volume_label) { + memset(fs->super->s_volume_name, 0, + sizeof(fs->super->s_volume_name)); + strncpy(fs->super->s_volume_name, volume_label, + sizeof(fs->super->s_volume_name)); + } + + /* + * Set the last mount directory + */ + if (mount_dir) { + memset(fs->super->s_last_mounted, 0, + sizeof(fs->super->s_last_mounted)); + strncpy(fs->super->s_last_mounted, mount_dir, + sizeof(fs->super->s_last_mounted)); + } + + if (!quiet || noaction) + show_stats(fs); + + if (noaction) + exit(0); + + if (fs->super->s_feature_incompat & + EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { + create_journal_dev(fs); + exit(ext2fs_close(fs) ? 1 : 0); + } + + if (bad_blocks_filename) + read_bb_file(fs, &bb_list, bad_blocks_filename); + if (cflag) + test_disk(fs, &bb_list); + + handle_bad_blocks(fs, bb_list); + fs->stride = fs_stride; + retval = ext2fs_allocate_tables(fs); + if (retval) { + bb_error_msg_and_die("Could not allocate filesystem tables"); + } + if (super_only) { + fs->super->s_state |= EXT2_ERROR_FS; + fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY); + } else { + /* rsv must be a power of two (64kB is MD RAID sb alignment) */ + unsigned int rsv = 65536 / fs->blocksize; + unsigned long blocks = fs->super->s_blocks_count; + unsigned long start; + blk_t ret_blk; + +#ifdef ZAP_BOOTBLOCK + zap_sector(fs, 0, 2); +#endif + + /* + * Wipe out any old MD RAID (or other) metadata at the end + * of the device. This will also verify that the device is + * as large as we think. Be careful with very small devices. + */ + start = (blocks & ~(rsv - 1)); + if (start > rsv) + start -= rsv; + if (start > 0) + retval = zero_blocks(fs, start, blocks - start, + NULL, &ret_blk, NULL); + + if (retval) { + bb_error_msg("Could not zero block %u at end of filesystem", ret_blk); + } + write_inode_tables(fs); + create_root_dir(fs); + create_lost_and_found(fs); + reserve_inodes(fs); + create_bad_block_inode(fs, bb_list); + if (fs->super->s_feature_compat & + EXT2_FEATURE_COMPAT_RESIZE_INODE) { + retval = ext2fs_create_resize_inode(fs); + if (retval) { + bb_error_msg_and_die("Could not reserve blocks for online resize"); + } + } + } + + if (journal_device) { + ext2_filsys jfs; + + if (!force) + check_plausibility(journal_device); + check_mount(journal_device, force, _("journal")); + + retval = ext2fs_open(journal_device, EXT2_FLAG_RW| + EXT2_FLAG_JOURNAL_DEV_OK, 0, + fs->blocksize, unix_io_manager, &jfs); + if (retval) { + bb_error_msg_and_die("Could not open journal device %s", journal_device); + } + if (!quiet) { + printf("Adding journal to device %s: ", journal_device); + fflush(stdout); + } + retval = ext2fs_add_journal_device(fs, jfs); + if(retval) { + bb_error_msg_and_die("Could not add journal to device %s", journal_device); + } + if (!quiet) + printf("done\n"); + ext2fs_close(jfs); + free(journal_device); + } else if (journal_size) { + journal_blocks = figure_journal_size(journal_size, fs); + + if (!journal_blocks) { + fs->super->s_feature_compat &= + ~EXT3_FEATURE_COMPAT_HAS_JOURNAL; + goto no_journal; + } + if (!quiet) { + printf("Creating journal (%d blocks): ", + journal_blocks); + fflush(stdout); + } + retval = ext2fs_add_journal_inode(fs, journal_blocks, + journal_flags); + if (retval) { + bb_error_msg_and_die("Could not create journal"); + } + if (!quiet) + printf("done\n"); + } +no_journal: + + if (!quiet) + printf("Writing superblocks and " + "filesystem accounting information: "); + retval = ext2fs_flush(fs); + if (retval) { + bb_error_msg("\nWarning, had trouble writing out superblocks"); + } + if (!quiet) { + printf("done\n\n"); + if (!getenv("MKE2FS_SKIP_CHECK_MSG")) + print_check_message(fs); + } + val = ext2fs_close(fs); + return (retval || val) ? 1 : 0; +} |