import initial fat mke2fs

5 files changed, 1536 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(&param, 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,
+					    &param.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(&param),
+						&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(&param))
+				param.s_blocks_count &= ~((sys_page_size /
+							   EXT2_BLOCK_SIZE(&param))-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, &sector_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, &param, blocksize, sector_size, &inode_ratio);
+	blocksize = EXT2_BLOCK_SIZE(&param);
+	
+	if (extended_opts)
+		parse_extended_opts(&param, 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(&param) ||
+		    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, &param,
+				   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;
+}
diff --git a/include/applets.h b/include/applets.h
index d6e767dbf..e0b18085a 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -395,9 +395,16 @@
 #ifdef CONFIG_MKDIR
 	APPLET(mkdir, mkdir_main, _BB_DIR_BIN, _BB_SUID_NEVER)
 #endif
+#ifdef CONFIG_MKE2FS
+	APPLET(mke2fs, mke2fs_main, _BB_DIR_SBIN, _BB_SUID_NEVER)
+#endif
 #ifdef CONFIG_MKFIFO
 	APPLET(mkfifo, mkfifo_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
 #endif
+#ifdef CONFIG_MKE2FS
+	APPLET_NOUSAGE("mkfs.ext2", mke2fs_main, _BB_DIR_SBIN, _BB_SUID_NEVER)
+	APPLET_NOUSAGE("mkfs.ext3", mke2fs_main, _BB_DIR_SBIN, _BB_SUID_NEVER)
+#endif
 #ifdef CONFIG_MKFS_MINIX
 	APPLET_ODDNAME("mkfs.minix", mkfs_minix_main, _BB_DIR_SBIN, _BB_SUID_NEVER, mkfs_minix)
 #endif
diff --git a/include/usage.h b/include/usage.h
index 1ab728f26..5fb9858bc 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -1705,6 +1705,37 @@
 	"/tmp/foo/bar/baz: No such file or directory\n" \
 	"$ mkdir -p /tmp/foo/bar/baz\n"
 
+#define mke2fs_trivial_usage \
+	"[-c|-l filename] [-b block-size] [-f fragment-size] [-g blocks-per-group] " \
+	"[-i bytes-per-inode] [-j] [-J journal-options] [-N number-of-inodes] [-n] " \
+	"[-m reserved-blocks-percentage] [-o creator-os] [-O feature[,...]] [-q] " \
+	"[r fs-revision-level] [-E extended-options] [-v] [-F] [-L volume-label] " \
+	"[-M last-mounted-directory] [-S] [-T filesystem-type] " \
+	"device [blocks-count]"
+#define mke2fs_full_usage \
+	"\t-b size\tblock size in bytes\n" \
+	"\t-c\tcheck for bad blocks before creating\n" \
+	"\t-E opts\tset extended options\n" \
+	"\t-f size\tfragment size in bytes\n" \
+	"\t-F\tforce (ignore sanity checks)\n" \
+	"\t-g num\tnumber of blocks in a block group\n" \
+	"\t-i ratio\tthe bytes/inode ratio\n" \
+	"\t-j\tcreate a journal (ext3)\n" \
+	"\t-J opts\tset journal options (size/device)\n" \
+	"\t-l file\tread bad blocks list from file\n" \
+	"\t-L lbl\tset the volume label\n" \
+	"\t-m percent\tpercent of fs blocks to reserve for admin\n" \
+	"\t-M dir\tset last mounted directory\n" \
+	"\t-n\tdo not actually create anything\n" \
+	"\t-N num\tnumber of inodes to create\n" \
+	"\t-o os\tset the 'creator os' field\n" \
+	"\t-O features\tdir_index/filetype/has_journal/journal_dev/sparse_super\n" \
+	"\t-q\tquiet execution\n" \
+	"\t-r rev\tset filesystem revision\n" \
+	"\t-S\twrite superblock and group descriptors only\n" \
+	"\t-T fs-type\tset usage type (news/largefile/largefile4)\n" \
+	"\t-v\tverbose execution"
+
 #define mkfifo_trivial_usage \
 	"[OPTIONS] name"
 #define mkfifo_full_usage \