*
* Busybox'ed (2009) by Vladimir Dronnikov <dronnikov@gmail.com>
*
- * Licensed under GPLv2, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2, see file LICENSE in this source tree.
*/
+//config:config MKE2FS
+//config: bool "mke2fs (10 kb)"
+//config: default y
+//config: select PLATFORM_LINUX
+//config: help
+//config: Utility to create EXT2 filesystems.
+//config:
+//config:config MKFS_EXT2
+//config: bool "mkfs.ext2 (10 kb)"
+//config: default y
+//config: select PLATFORM_LINUX
+//config: help
+//config: Alias to "mke2fs".
+
+// APPLET_ODDNAME:name main location suid_type help
+//applet:IF_MKE2FS( APPLET_ODDNAME(mke2fs, mkfs_ext2, BB_DIR_SBIN, BB_SUID_DROP, mkfs_ext2))
+//applet:IF_MKFS_EXT2(APPLET_ODDNAME(mkfs.ext2, mkfs_ext2, BB_DIR_SBIN, BB_SUID_DROP, mkfs_ext2))
+////////:IF_MKFS_EXT3(APPLET_ODDNAME(mkfs.ext3, mkfs_ext2, BB_DIR_SBIN, BB_SUID_DROP, mkfs_ext2))
+
+//kbuild:lib-$(CONFIG_MKE2FS) += mkfs_ext2.o
+//kbuild:lib-$(CONFIG_MKFS_EXT2) += mkfs_ext2.o
+
+//usage:#define mkfs_ext2_trivial_usage
+//usage: "[-Fn] "
+/* //usage: "[-c|-l filename] " */
+//usage: "[-b BLK_SIZE] "
+/* //usage: "[-f fragment-size] [-g blocks-per-group] " */
+//usage: "[-i INODE_RATIO] [-I INODE_SIZE] "
+/* //usage: "[-j] [-J journal-options] [-N number-of-inodes] " */
+//usage: "[-m RESERVED_PERCENT] "
+/* //usage: "[-o creator-os] [-O feature[,...]] [-q] " */
+/* //usage: "[r fs-revision-level] [-E extended-options] [-v] [-F] " */
+//usage: "[-L LABEL] "
+/* //usage: "[-M last-mounted-directory] [-S] [-T filesystem-type] " */
+//usage: "BLOCKDEV [KBYTES]"
+//usage:#define mkfs_ext2_full_usage "\n\n"
+//usage: " -b BLK_SIZE Block size, bytes"
+/* //usage: "\n -c Check device for bad blocks" */
+/* //usage: "\n -E opts Set extended options" */
+/* //usage: "\n -f size Fragment size in bytes" */
+//usage: "\n -F Force"
+/* //usage: "\n -g N Number of blocks in a block group" */
+//usage: "\n -i RATIO Max number of files is filesystem_size / RATIO"
+//usage: "\n -I BYTES Inode size (min 128)"
+/* //usage: "\n -j Create a journal (ext3)" */
+/* //usage: "\n -J opts Set journal options (size/device)" */
+/* //usage: "\n -l file Read bad blocks list from file" */
+//usage: "\n -L LBL Volume label"
+//usage: "\n -m PERCENT Percent of blocks to reserve for admin"
+/* //usage: "\n -M dir Set last mounted directory" */
+//usage: "\n -n Dry run"
+/* //usage: "\n -N N Number of inodes to create" */
+/* //usage: "\n -o os Set the 'creator os' field" */
+/* //usage: "\n -O features Dir_index/filetype/has_journal/journal_dev/sparse_super" */
+/* //usage: "\n -q Quiet" */
+/* //usage: "\n -r rev Set filesystem revision" */
+/* //usage: "\n -S Write superblock and group descriptors only" */
+/* //usage: "\n -T fs-type Set usage type (news/largefile/largefile4)" */
+/* //usage: "\n -v Verbose" */
+
#include "libbb.h"
#include <linux/fs.h>
-#include <linux/ext2_fs.h>
-#include <sys/user.h> /* PAGE_SIZE */
-#ifndef PAGE_SIZE
-# define PAGE_SIZE 4096
-#endif
-#include "volume_id/volume_id_internal.h"
-
-#define ENABLE_FEATURE_MKFS_EXT2_RESERVED_GDT 0
-#define ENABLE_FEATURE_MKFS_EXT2_DIR_INDEX 1
-
-// from e2fsprogs
-#define s_reserved_gdt_blocks s_padding1
-#define s_mkfs_time s_reserved[0]
-#define s_flags s_reserved[22]
-#define EXT2_HASH_HALF_MD4 1
-#define EXT2_FLAGS_SIGNED_HASH 0x0001
-
-// whiteout: for writable overlays
-//#define LINUX_S_IFWHT 0160000
-//#define EXT2_FEATURE_INCOMPAT_WHITEOUT 0x0020
-
-// storage helpers
-char BUG_wrong_field_size(void);
-#define STORE_LE(field, value) \
-do { \
- if (sizeof(field) == 4) \
- field = cpu_to_le32(value); \
- else if (sizeof(field) == 2) \
- field = cpu_to_le16(value); \
- else if (sizeof(field) == 1) \
- field = (value); \
- else \
- BUG_wrong_field_size(); \
-} while (0)
-
-#define FETCH_LE32(field) \
- (sizeof(field) == 4 ? cpu_to_le32(field) : BUG_wrong_field_size())
+#include "bb_e2fs_defs.h"
+
+#define ENABLE_FEATURE_MKFS_EXT2_RESERVED_GDT 0
+#define ENABLE_FEATURE_MKFS_EXT2_DIR_INDEX 1
+
+#define EXT2_HASH_HALF_MD4 1
+#define EXT2_FLAGS_SIGNED_HASH 0x0001
+#define EXT2_FLAGS_UNSIGNED_HASH 0x0002
// All fields are little-endian
struct ext2_dir {
{
uint32_t i;
-//bb_info_msg("ALLOC: [%u][%u][%u]: [%u-%u]:=[%x],[%x]", blocksize, start, end, start/8, blocksize - end/8 - 1, (1 << (start & 7)) - 1, (uint8_t)(0xFF00 >> (end & 7)));
+//bb_error_msg("ALLOC: [%u][%u][%u]: [%u-%u]:=[%x],[%x]", blocksize, start, end, start/8, blocksize - end/8 - 1, (1 << (start & 7)) - 1, (uint8_t)(0xFF00 >> (end & 7)));
memset(bitmap, 0, blocksize);
i = start / 8;
memset(bitmap, 0xFF, i);
}
}
-/* Standard mke2fs 1.41.9:
- * Usage: mke2fs [-c|-l filename] [-b block-size] [-f fragment-size]
- * [-i bytes-per-inode] [-I inode-size] [-J journal-options]
- * [-G meta group size] [-N number-of-inodes]
- * [-m reserved-blocks-percentage] [-o creator-os]
- * [-g blocks-per-group] [-L volume-label] [-M last-mounted-directory]
- * [-O feature[,...]] [-r fs-revision] [-E extended-option[,...]]
- * [-T fs-type] [-U UUID] [-jnqvFSV] device [blocks-count]
-*/
-// N.B. not commented below options are taken and silently ignored
+#define fd 3 /* predefined output descriptor */
+
+static void PUT(uint64_t off, void *buf, uint32_t size)
+{
+ //bb_error_msg("PUT[%llu]:[%u]", off, size);
+ xlseek(fd, off, SEEK_SET);
+ xwrite(fd, buf, size);
+}
+
+// 128 and 256-byte inodes:
+// 128-byte inode is described by struct ext2_inode.
+// 256-byte one just has these fields appended:
+// __u16 i_extra_isize;
+// __u16 i_pad1;
+// __u32 i_ctime_extra; /* extra Change time (nsec << 2 | epoch) */
+// __u32 i_mtime_extra; /* extra Modification time (nsec << 2 | epoch) */
+// __u32 i_atime_extra; /* extra Access time (nsec << 2 | epoch) */
+// __u32 i_crtime; /* File creation time */
+// __u32 i_crtime_extra; /* extra File creation time (nsec << 2 | epoch)*/
+// __u32 i_version_hi; /* high 32 bits for 64-bit version */
+// the rest is padding.
+//
+// linux/ext2_fs.h has "#define i_size_high i_dir_acl" which suggests that even
+// 128-byte inode is capable of describing large files (i_dir_acl is meaningful
+// only for directories, which never need i_size_high).
+//
+// Standard mke2fs creates a filesystem with 256-byte inodes if it is
+// bigger than 0.5GB.
+
+// Standard mke2fs 1.41.9:
+// Usage: mke2fs [-c|-l filename] [-b block-size] [-f fragment-size]
+// [-i bytes-per-inode] [-I inode-size] [-J journal-options]
+// [-G meta group size] [-N number-of-inodes]
+// [-m reserved-blocks-percentage] [-o creator-os]
+// [-g blocks-per-group] [-L volume-label] [-M last-mounted-directory]
+// [-O feature[,...]] [-r fs-revision] [-E extended-option[,...]]
+// [-T fs-type] [-U UUID] [-jnqvFSV] device [blocks-count]
+//
+// Options not commented below are taken but silently ignored:
enum {
OPT_c = 1 << 0,
OPT_l = 1 << 1,
OPT_b = 1 << 2, // block size, in bytes
OPT_f = 1 << 3,
OPT_i = 1 << 4, // bytes per inode
- OPT_I = 1 << 5,
+ OPT_I = 1 << 5, // custom inode size, in bytes
OPT_J = 1 << 6,
OPT_G = 1 << 7,
OPT_N = 1 << 8,
//OPT_V = 1 << 25, // -V version. bbox applets don't support that
};
-#define fd 3 /* predefined output descriptor */
-
-static void PUT(uint64_t off, void *buf, uint32_t size)
-{
-// bb_info_msg("PUT[%llu]:[%u]", off, size);
- xlseek(fd, off, SEEK_SET);
- xwrite(fd, buf, size);
-}
-
int mkfs_ext2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int mkfs_ext2_main(int argc UNUSED_PARAM, char **argv)
{
unsigned i, pos, n;
unsigned bs, bpi;
unsigned blocksize, blocksize_log2;
+ unsigned inodesize, user_inodesize;
unsigned reserved_percent = 5;
unsigned long long kilobytes;
uint32_t nblocks, nblocks_full;
uint32_t inode_table_blocks;
uint32_t lost_and_found_blocks;
time_t timestamp;
- unsigned opts;
const char *label = "";
struct stat st;
struct ext2_super_block *sb; // superblock
struct ext2_dir *dir;
uint8_t *buf;
- opt_complementary = "-1:b+:m+:i+";
- opts = getopt32(argv, "cl:b:f:i:I:J:G:N:m:o:g:L:M:O:r:E:T:U:jnqvFS",
- NULL, &bs, NULL, &bpi, NULL, NULL, NULL, NULL,
- &reserved_percent, NULL, NULL, &label, NULL, NULL, NULL, NULL, NULL, NULL);
+ // using global "option_mask32" instead of local "opts":
+ // we are register starved here
+ /*opts =*/ getopt32(argv, "cl:b:+f:i:+I:+J:G:N:m:+o:g:L:M:O:r:E:T:U:jnqvFS",
+ /*lbfi:*/ NULL, &bs, NULL, &bpi,
+ /*IJGN:*/ &user_inodesize, NULL, NULL, NULL,
+ /*mogL:*/ &reserved_percent, NULL, NULL, &label,
+ /*MOrE:*/ NULL, NULL, NULL, NULL,
+ /*TU:*/ NULL, NULL);
argv += optind; // argv[0] -- device
- // check the device is a block device
+ // open the device, check the device is a block device
xmove_fd(xopen(argv[0], O_WRONLY), fd);
- fstat(fd, &st);
- if (!S_ISBLK(st.st_mode) && !(opts & OPT_F))
- bb_error_msg_and_die("not a block device");
+ xfstat(fd, &st, argv[0]);
+ if (!S_ISBLK(st.st_mode) && !(option_mask32 & OPT_F))
+ bb_error_msg_and_die("%s: not a block device", argv[0]);
// check if it is mounted
// N.B. what if we format a file? find_mount_point will return false negative since
- // it is loop block device which mounted!
+ // it is loop block device which is mounted!
if (find_mount_point(argv[0], 0))
bb_error_msg_and_die("can't format mounted filesystem");
- // open the device, get size in kbytes
- if (argv[1]) {
- kilobytes = xatoull(argv[1]);
- } else {
- kilobytes = (uoff_t)xlseek(fd, 0, SEEK_END) / 1024;
- }
+ // get size in kbytes
+ kilobytes = get_volume_size_in_bytes(fd, argv[1], 1024, /*extend:*/ !(option_mask32 & OPT_n)) / 1024;
bytes_per_inode = 16384;
if (kilobytes < 512*1024)
bytes_per_inode = 4096;
if (kilobytes < 3*1024)
bytes_per_inode = 8192;
- if (opts & OPT_i)
+ if (option_mask32 & OPT_i)
bytes_per_inode = bpi;
- // Determine block size
+ // Determine block size and inode size
// block size is a multiple of 1024
+ // inode size is a multiple of 128
blocksize = 1024;
- if (kilobytes >= 512*1024) // mke2fs 1.41.9 compat
+ inodesize = sizeof(struct ext2_inode); // 128
+ if (kilobytes >= 512*1024) { // mke2fs 1.41.9 compat
blocksize = 4096;
+ inodesize = 256;
+ }
if (EXT2_MAX_BLOCK_SIZE > 4096) {
// kilobytes >> 22 == size in 4gigabyte chunks.
// if size >= 16k gigs, blocksize must be increased.
while ((kilobytes >> 22) >= blocksize)
blocksize *= 2;
}
- if (opts & OPT_b)
+ if (option_mask32 & OPT_b)
blocksize = bs;
if (blocksize < EXT2_MIN_BLOCK_SIZE
|| blocksize > EXT2_MAX_BLOCK_SIZE
) {
bb_error_msg_and_die("blocksize %u is bad", blocksize);
}
+ // Do we have custom inode size?
+ if (option_mask32 & OPT_I) {
+ if (user_inodesize < sizeof(*inode)
+ || user_inodesize > blocksize
+ || (user_inodesize & (user_inodesize - 1)) // not power of 2
+ ) {
+ bb_error_msg("-%c is bad", 'I');
+ } else {
+ inodesize = user_inodesize;
+ }
+ }
+
if ((int32_t)bytes_per_inode < blocksize)
bb_error_msg_and_die("-%c is bad", 'i');
// number of bits in one block, i.e. 8*blocksize
if (nblocks != kilobytes)
bb_error_msg_and_die("block count doesn't fit in 32 bits");
#define kilobytes kilobytes_unused_after_this
-//compat problem
-// if (blocksize < PAGE_SIZE)
-// nblocks &= ~((PAGE_SIZE >> blocksize_log2)-1);
// Experimentally, standard mke2fs won't work on images smaller than 60k
if (nblocks < 60)
bb_error_msg_and_die("need >= 60 blocks");
nreserved = (uint64_t)nblocks * reserved_percent / 100;
// N.B. killing e2fsprogs feature! Unused blocks don't account in calculations
- nblocks_full = nblocks;
+ nblocks_full = nblocks;
// If last block group is too small, nblocks may be decreased in order
// to discard it, and control returns here to recalculate some
{
// N.B. e2fsprogs does as follows!
- // ninodes is the total number of inodes (files) in the file system
- uint32_t ninodes = ((uint64_t) nblocks_full * blocksize) / bytes_per_inode;
uint32_t overhead, remainder;
+ // ninodes is the max number of inodes in this filesystem
+ uint32_t ninodes = ((uint64_t) nblocks_full * blocksize) / bytes_per_inode;
if (ninodes < EXT2_GOOD_OLD_FIRST_INO+1)
ninodes = EXT2_GOOD_OLD_FIRST_INO+1;
inodes_per_group = div_roundup(ninodes, ngroups);
// minimum number because the first EXT2_GOOD_OLD_FIRST_INO-1 are reserved
if (inodes_per_group < 16)
inodes_per_group = 16;
-
- // a block group can have no more than 8*blocksize inodes
+ // a block group can't have more inodes than blocks
if (inodes_per_group > blocks_per_group)
inodes_per_group = blocks_per_group;
// adjust inodes per group so they completely fill the inode table blocks in the descriptor
- inodes_per_group = (div_roundup(inodes_per_group * sizeof(*inode), blocksize) * blocksize) / sizeof(*inode);
+ inodes_per_group = (div_roundup(inodes_per_group * inodesize, blocksize) * blocksize) / inodesize;
// make sure the number of inodes per group is a multiple of 8
inodes_per_group &= ~7;
- inode_table_blocks = div_roundup(inodes_per_group * sizeof(*inode), blocksize);
+ inode_table_blocks = div_roundup(inodes_per_group * inodesize, blocksize);
// to be useful, lost+found should occupy at least 2 blocks (but not exceeding 16*1024 bytes),
// and at most EXT2_NDIR_BLOCKS. So reserve these blocks right now
////) {
//// bb_error_msg_and_die("way small device");
////}
+
// Standard mke2fs uses 50. Looks like a bug in our calculation
// of "remainder" or "overhead" - we don't match standard mke2fs
// when we transition from one group to two groups
// (a bit after 8M image size), but it works for two->three groups
// transition (at 16M).
if (remainder && (remainder < overhead + 50)) {
-//bb_info_msg("CHOP[%u]", remainder);
+//bb_error_msg("CHOP[%u]", remainder);
nblocks -= remainder;
goto retry;
}
, inodes_per_group * ngroups, nblocks
, nreserved, reserved_percent
, first_block
- , group_desc_blocks * (blocksize / sizeof(*gd)) * blocks_per_group
+ , group_desc_blocks * (blocksize / (unsigned)sizeof(*gd)) * blocks_per_group
, ngroups
, blocks_per_group, blocks_per_group
, inodes_per_group
}
bb_putchar('\n');
- if (opts & OPT_n) {
+ if (option_mask32 & OPT_n) {
if (ENABLE_FEATURE_CLEAN_UP)
close(fd);
return EXIT_SUCCESS;
// fill the superblock
sb = xzalloc(1024);
- STORE_LE(sb->s_rev_level, 1); // revision 1 filesystem
+ STORE_LE(sb->s_rev_level, EXT2_DYNAMIC_REV); // revision 1 filesystem
STORE_LE(sb->s_magic, EXT2_SUPER_MAGIC);
- STORE_LE(sb->s_inode_size, sizeof(*inode));
+ STORE_LE(sb->s_inode_size, inodesize);
+ // set "Required extra isize" and "Desired extra isize" fields to 28
+ if (inodesize != sizeof(*inode)) {
+ STORE_LE(sb->s_min_extra_isize, 0x001c);
+ STORE_LE(sb->s_want_extra_isize, 0x001c);
+ }
STORE_LE(sb->s_first_ino, EXT2_GOOD_OLD_FIRST_INO);
STORE_LE(sb->s_log_block_size, blocksize_log2 - EXT2_MIN_BLOCK_LOG_SIZE);
STORE_LE(sb->s_log_frag_size, blocksize_log2 - EXT2_MIN_BLOCK_LOG_SIZE);
STORE_LE(sb->s_mkfs_time, timestamp);
STORE_LE(sb->s_wtime, timestamp);
STORE_LE(sb->s_lastcheck, timestamp);
- // misc
+ // misc. Values are chosen to match mke2fs 1.41.9
STORE_LE(sb->s_state, 1); // TODO: what's 1?
STORE_LE(sb->s_creator_os, EXT2_OS_LINUX);
STORE_LE(sb->s_checkinterval, 24*60*60 * 180); // 180 days
STORE_LE(sb->s_errors, EXT2_ERRORS_DEFAULT);
+ // mke2fs 1.41.9 also sets EXT3_FEATURE_COMPAT_RESIZE_INODE
+ // and if >= 0.5GB, EXT3_FEATURE_RO_COMPAT_LARGE_FILE.
+ // we use values which match "mke2fs -O ^resize_inode":
+ // in this case 1.41.9 never sets EXT3_FEATURE_RO_COMPAT_LARGE_FILE.
STORE_LE(sb->s_feature_compat, EXT2_FEATURE_COMPAT_SUPP
| (EXT2_FEATURE_COMPAT_RESIZE_INO * ENABLE_FEATURE_MKFS_EXT2_RESERVED_GDT)
| (EXT2_FEATURE_COMPAT_DIR_INDEX * ENABLE_FEATURE_MKFS_EXT2_DIR_INDEX)
);
- // e2fsck from 1.41.9 doesn't like EXT2_FEATURE_INCOMPAT_WHITEOUT
- STORE_LE(sb->s_feature_incompat, EXT2_FEATURE_INCOMPAT_FILETYPE);// | EXT2_FEATURE_INCOMPAT_WHITEOUT;
+ STORE_LE(sb->s_feature_incompat, EXT2_FEATURE_INCOMPAT_FILETYPE);
STORE_LE(sb->s_feature_ro_compat, EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER);
- STORE_LE(sb->s_flags, EXT2_FLAGS_SIGNED_HASH * ENABLE_FEATURE_MKFS_EXT2_DIR_INDEX);
+ STORE_LE(sb->s_flags, EXT2_FLAGS_UNSIGNED_HASH * ENABLE_FEATURE_MKFS_EXT2_DIR_INDEX);
generate_uuid(sb->s_uuid);
if (ENABLE_FEATURE_MKFS_EXT2_DIR_INDEX) {
STORE_LE(sb->s_def_hash_version, EXT2_HASH_HALF_MD4);
free_blocks = (n < blocks_per_group ? n : blocks_per_group) - overhead;
// mark preallocated blocks as allocated
-//bb_info_msg("ALLOC: [%u][%u][%u]", blocksize, overhead, blocks_per_group - (free_blocks + overhead));
+//bb_error_msg("ALLOC: [%u][%u][%u]", blocksize, overhead, blocks_per_group - (free_blocks + overhead));
allocate(buf, blocksize,
// reserve "overhead" blocks
overhead,
// zero boot sectors
memset(buf, 0, blocksize);
- PUT(0, buf, 1024); // N.B. 1024 <= blocksize, so buf[0..1023] contains zeros
+ // Disabled: standard mke2fs doesn't do this, and
+ // on SPARC this destroys Sun disklabel.
+ // Users who need/want zeroing can easily do it with dd.
+ //PUT(0, buf, 1024); // N.B. 1024 <= blocksize, so buf[0..1023] contains zeros
+
// zero inode tables
for (i = 0; i < ngroups; ++i)
for (n = 0; n < inode_table_blocks; ++n)
// dump root dir inode
STORE_LE(inode->i_links_count, 3); // "/.", "/..", "/lost+found/.." point to this inode
STORE_LE(inode->i_block[0], FETCH_LE32(gd[0].bg_inode_table) + inode_table_blocks);
- PUT(((uint64_t)FETCH_LE32(gd[0].bg_inode_table) * blocksize) + (EXT2_ROOT_INO-1) * sizeof(*inode),
- buf, sizeof(*inode));
+ PUT(((uint64_t)FETCH_LE32(gd[0].bg_inode_table) * blocksize) + (EXT2_ROOT_INO-1) * inodesize,
+ buf, inodesize);
// dump lost+found dir inode
STORE_LE(inode->i_links_count, 2); // both "/lost+found" and "/lost+found/." point to this inode
n = FETCH_LE32(inode->i_block[0]) + 1;
for (i = 0; i < lost_and_found_blocks; ++i)
STORE_LE(inode->i_block[i], i + n); // use next block
-//bb_info_msg("LAST BLOCK USED[%u]", i + n);
- PUT(((uint64_t)FETCH_LE32(gd[0].bg_inode_table) * blocksize) + (EXT2_GOOD_OLD_FIRST_INO-1) * sizeof(*inode),
- buf, sizeof(*inode));
+//bb_error_msg("LAST BLOCK USED[%u]", i + n);
+ PUT(((uint64_t)FETCH_LE32(gd[0].bg_inode_table) * blocksize) + (EXT2_GOOD_OLD_FIRST_INO-1) * inodesize,
+ buf, inodesize);
- // zero the blocks for "/lost+found"
+ // dump directories
memset(buf, 0, blocksize);
+ dir = (struct ext2_dir *)buf;
+
+ // dump 2nd+ blocks of "/lost+found"
+ STORE_LE(dir->rec_len1, blocksize); // e2fsck 1.41.4 compat (1.41.9 does not need this)
for (i = 1; i < lost_and_found_blocks; ++i)
PUT((uint64_t)(FETCH_LE32(gd[0].bg_inode_table) + inode_table_blocks + 1+i) * blocksize,
buf, blocksize);
- // dump directories
- dir = (struct ext2_dir *)buf;
-
- // dump lost+found dir block
+ // dump 1st block of "/lost+found"
STORE_LE(dir->inode1, EXT2_GOOD_OLD_FIRST_INO);
STORE_LE(dir->rec_len1, 12);
STORE_LE(dir->name_len1, 1);
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