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e2fsprogs/misc/mke2fs.c

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/*
* 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
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#else
extern char *optarg;
extern int optind;
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_MNTENT_H
#include <mntent.h>
#endif
#include <sys/ioctl.h>
#include <sys/types.h>
#include "ext2fs/ext2_fs.h"
#include "et/com_err.h"
#include "uuid/uuid.h"
#include "e2p/e2p.h"
#include "ext2fs/ext2fs.h"
#include "util.h"
#include "profile.h"
#include "../version.h"
#include "nls-enable.h"
#define STRIDE_LENGTH 8
#ifndef __sparc__
#define ZAP_BOOTBLOCK
#endif
extern int isatty(int);
extern FILE *fpopen(const char *cmd, const char *mode);
const char * program_name = "mke2fs";
const char * device_name /* = NULL */;
/* Command line options */
int cflag;
int verbose;
int quiet;
int super_only;
int force;
int noaction;
int journal_size;
int journal_flags;
char *bad_blocks_filename;
__u32 fs_stride;
struct ext2_super_block fs_param;
char *creator_os;
char *volume_label;
char *mount_dir;
char *journal_device;
int sync_kludge; /* Set using the MKE2FS_SYNC env. option */
profile_t profile;
int sys_page_size = 4096;
int linux_version_code = 0;
static void usage(void)
{
fprintf(stderr, _("Usage: %s [-c|-t|-l filename] [-b block-size] "
"[-f fragment-size]\n\t[-i bytes-per-inode] [-j] [-J journal-options]"
" [-N number-of-inodes]\n\t[-m reserved-blocks-percentage] "
"[-o creator-os] [-g blocks-per-group]\n\t[-L volume-label] "
"[-M last-mounted-directory] [-O feature[,...]]\n\t"
"[-r fs-revision] [-R options] [-qvSV] device [blocks-count]\n"),
program_name);
exit(1);
}
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);
}
/*
* Helper function for read_bb_file and test_disk
*/
static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk)
{
fprintf(stderr, _("Bad block %u out of range; ignored.\n"), 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) {
com_err("read_bad_blocks_file", errno,
_("while trying to open %s"), bad_blocks_file);
exit(1);
}
retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
fclose (f);
if (retval) {
com_err("ext2fs_read_bb_FILE", retval,
_("while reading in list of bad blocks from file"));
exit(1);
}
}
/*
* 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 -X %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) {
com_err("popen", errno,
_("while trying to run '%s'"), buf);
exit(1);
}
retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
pclose(f);
if (retval) {
com_err("ext2fs_read_bb_FILE", retval,
_("while processing list of bad blocks from program"));
exit(1);
}
}
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)) {
fprintf(stderr, _("Block %d in primary "
"superblock/group descriptor area bad.\n"), i);
fprintf(stderr, _("Blocks %u through %d must be good "
"in order to build a filesystem.\n"),
fs->super->s_first_data_block, must_be_good);
fputs(_("Aborting....\n"), stderr);
exit(1);
}
}
/*
* 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)
fprintf(stderr,
_("Warning: the backup superblock/group descriptors at block %u contain\n"
" bad blocks.\n\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) {
com_err("ext2fs_badblocks_list_iterate_begin", retval,
_("while marking bad blocks as used"));
exit(1);
}
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 = malloc(fs->blocksize * STRIDE_LENGTH);
if (!buf) {
com_err("malloc", ENOMEM,
_("while allocating zeroizing buffer"));
exit(1);
}
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;
int lazy_flag = 0;
if (quiet)
memset(&progress, 0, sizeof(progress));
else
progress_init(&progress, _("Writing inode tables: "),
fs->group_desc_count);
if (EXT2_HAS_COMPAT_FEATURE(fs->super,
EXT2_FEATURE_COMPAT_LAZY_BG))
lazy_flag = 1;
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;
if (!(lazy_flag &&
(fs->group_desc[i].bg_flags & EXT2_BG_INODE_UNINIT))) {
retval = zero_blocks(fs, blk, num, 0, &blk, &num);
if (retval) {
fprintf(stderr, _("\nCould not write %d "
"blocks in inode table starting at %u: %s\n"),
num, blk, error_message(retval));
exit(1);
}
}
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 setup_lazy_bg(ext2_filsys fs)
{
dgrp_t i;
int blks;
struct ext2_super_block *sb = fs->super;
struct ext2_group_desc *bg = fs->group_desc;
if (EXT2_HAS_COMPAT_FEATURE(fs->super,
EXT2_FEATURE_COMPAT_LAZY_BG)) {
for (i = 0; i < fs->group_desc_count; i++, bg++) {
if ((i == 0) ||
(i == fs->group_desc_count-1))
continue;
if (bg->bg_free_inodes_count ==
sb->s_inodes_per_group) {
bg->bg_free_inodes_count = 0;
bg->bg_flags |= EXT2_BG_INODE_UNINIT;
sb->s_free_inodes_count -=
sb->s_inodes_per_group;
}
blks = ext2fs_super_and_bgd_loc(fs, i, 0, 0, 0, 0);
if (bg->bg_free_blocks_count == blks) {
bg->bg_free_blocks_count = 0;
bg->bg_flags |= EXT2_BG_BLOCK_UNINIT;
sb->s_free_blocks_count -= blks;
}
}
}
}
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) {
com_err("ext2fs_mkdir", retval, _("while creating root dir"));
exit(1);
}
if (geteuid()) {
retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
if (retval) {
com_err("ext2fs_read_inode", retval,
_("while reading root inode"));
exit(1);
}
inode.i_uid = getuid();
if (inode.i_uid)
inode.i_gid = getgid();
retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
if (retval) {
com_err("ext2fs_write_inode", retval,
_("while setting root inode ownership"));
exit(1);
}
}
}
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) {
com_err("ext2fs_mkdir", retval,
_("while creating /lost+found"));
exit(1);
}
retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
if (retval) {
com_err("ext2_lookup", retval,
_("while looking up /lost+found"));
exit(1);
}
for (i=1; i < EXT2_NDIR_BLOCKS; i++) {
if ((lpf_size += fs->blocksize) >= 16*1024)
break;
retval = ext2fs_expand_dir(fs, ino);
if (retval) {
com_err("ext2fs_expand_dir", retval,
_("while expanding /lost+found"));
exit(1);
}
}
}
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) {
com_err("ext2fs_update_bb_inode", retval,
_("while setting bad block inode"));
exit(1);
}
}
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)
fprintf(stderr,
_("Warning: could not read block 0: %s\n"),
error_message(retval));
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)
fprintf(stderr, _("Warning: could not erase sector %d: %s\n"),
sect, error_message(retval));
}
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) {
com_err("create_journal_dev", retval,
_("while initializing journal superblock"));
exit(1);
}
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) {
com_err("create_journal_dev", retval,
_("while zeroing journal device (block %u, count %d)"),
blk, count);
exit(1);
}
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) {
com_err("create_journal_dev", retval,
_("while writing journal superblock"));
exit(1);
}
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 (fs_param.s_blocks_count != s->s_blocks_count)
fprintf(stderr, _("warning: %u blocks unused.\n\n"),
fs_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 *param,
const char *opts)
{
char *buf, *token, *next, *p, *arg;
int len;
int r_usage = 0;
len = strlen(opts);
buf = malloc(len+1);
if (!buf) {
fprintf(stderr,
_("Couldn't allocate memory to parse options!\n"));
exit(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)) {
fprintf(stderr,
_("Invalid stride parameter: %s\n"),
arg);
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,
param->s_log_block_size);
if (resize == 0) {
fprintf(stderr,
_("Invalid resize parameter: %s\n"),
arg);
r_usage++;
continue;
}
if (resize <= param->s_blocks_count) {
fprintf(stderr,
_("The resize maximum must be greater "
"than the filesystem size.\n"));
r_usage++;
continue;
}
blocksize = EXT2_BLOCK_SIZE(param);
bpg = param->s_blocks_per_group;
if (!bpg)
bpg = blocksize * 8;
gdpb = blocksize / sizeof(struct ext2_group_desc);
group_desc_count = (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 > (int) EXT2_ADDR_PER_BLOCK(param))
rsv_gdb = EXT2_ADDR_PER_BLOCK(param);
if (rsv_gdb > 0) {
param->s_feature_compat |=
EXT2_FEATURE_COMPAT_RESIZE_INODE;
param->s_reserved_gdt_blocks = rsv_gdb;
}
} else
r_usage++;
}
if (r_usage) {
fprintf(stderr, _("\nBad options specified.\n\n"
"Extended options are separated by commas, "
"and may take an argument which\n"
"\tis set off by an equals ('=') sign.\n\n"
"Valid extended options are:\n"
"\tstride=<stride length in blocks>\n"
"\tresize=<resize maximum size in blocks>\n\n"));
exit(1);
}
}
static __u32 ok_features[3] = {
EXT3_FEATURE_COMPAT_HAS_JOURNAL |
EXT2_FEATURE_COMPAT_RESIZE_INODE |
EXT2_FEATURE_COMPAT_DIR_INDEX |
EXT2_FEATURE_COMPAT_LAZY_BG, /* 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 syntax_err_report(const char *filename, long err, int line_num)
{
fprintf(stderr,
_("Syntax error in mke2fs config file (%s, line #%d)\n\t%s\n"),
filename, line_num, error_message(err));
exit(1);
}
static const char *config_fn[] = { "/etc/mke2fs.conf", 0 };
static void edit_feature(const char *str, __u32 *compat_array)
{
if (!str)
return;
if (e2p_edit_feature(str, compat_array, ok_features)) {
fprintf(stderr, _("Invalid filesystem option set: %s\n"),
str);
exit(1);
}
}
static void PRS(int argc, char *argv[])
{
int b, c;
int size;
char *tmp, *tmp2;
int blocksize = 0;
int inode_ratio = 0;
int inode_size = 0;
double reserved_ratio = 5.0;
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;
int s_opt = -1, r_opt = -1;
char *fs_features = 0;
int use_bsize;
/* 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 */
#ifdef HAVE_SYSCONF
#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 */
#endif /* HAVE_SYSCONF */
if ((tmp = getenv("MKE2FS_CONFIG")) != NULL)
config_fn[0] = tmp;
profile_set_syntax_err_cb(syntax_err_report);
profile_init(config_fn, &profile);
setbuf(stdout, NULL);
setbuf(stderr, NULL);
initialize_ext2_error_table();
memset(&fs_param, 0, sizeof(struct ext2_super_block));
fs_param.s_rev_level = 1; /* Create revision 1 filesystems now */
#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))
fs_param.s_rev_level = 0;
#endif
if (argc && *argv) {
program_name = get_progname(*argv);
/* If called as mkfs.ext3, create a journal inode */
if (!strcmp(program_name, "mkfs.ext3"))
journal_size = -1;
}
while ((c = getopt (argc, argv,
"b:cf:g:i:jl:m:no:qr:s:tvE:FI:J:L:M:N:O:R:ST: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) {
com_err(program_name, 0,
_("invalid block size - %s"), optarg);
exit(1);
}
if (blocksize > 4096)
fprintf(stderr, _("Warning: blocksize %d not "
"usable on most systems.\n"),
blocksize);
if (blocksize > 0)
fs_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) {
com_err(program_name, 0,
_("invalid fragment size - %s"),
optarg);
exit(1);
}
fs_param.s_log_frag_size =
int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
fprintf(stderr, _("Warning: fragments not supported. "
"Ignoring -f option\n"));
break;
case 'g':
fs_param.s_blocks_per_group = strtoul(optarg, &tmp, 0);
if (*tmp) {
com_err(program_name, 0,
_("Illegal number for blocks per group"));
exit(1);
}
if ((fs_param.s_blocks_per_group % 8) != 0) {
com_err(program_name, 0,
_("blocks per group must be multiple of 8"));
exit(1);
}
break;
case 'i':
inode_ratio = strtoul(optarg, &tmp, 0);
if (inode_ratio < EXT2_MIN_BLOCK_SIZE ||
inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024 ||
*tmp) {
com_err(program_name, 0,
_("invalid inode ratio %s (min %d/max %d)"),
optarg, EXT2_MIN_BLOCK_SIZE,
EXT2_MAX_BLOCK_SIZE);
exit(1);
}
break;
case 'J':
parse_journal_opts(optarg);
break;
case 'j':
if (!journal_size)
journal_size = -1;
break;
case 'l':
bad_blocks_filename = malloc(strlen(optarg)+1);
if (!bad_blocks_filename) {
com_err(program_name, ENOMEM,
_("in malloc for bad_blocks_filename"));
exit(1);
}
strcpy(bad_blocks_filename, optarg);
break;
case 'm':
reserved_ratio = strtod(optarg, &tmp);
if (reserved_ratio > 50 || *tmp) {
com_err(program_name, 0,
_("invalid reserved blocks percent - %s"),
optarg);
exit(1);
}
break;
case 'n':
noaction++;
break;
case 'o':
creator_os = optarg;
break;
case 'q':
quiet = 1;
break;
case 'r':
r_opt = strtoul(optarg, &tmp, 0);
if (*tmp) {
com_err(program_name, 0,
_("bad revision level - %s"), optarg);
exit(1);
}
fs_param.s_rev_level = r_opt;
break;
case 's': /* deprecated */
s_opt = atoi(optarg);
break;
#ifdef EXT2_DYNAMIC_REV
case 'I':
inode_size = strtoul(optarg, &tmp, 0);
if (*tmp) {
com_err(program_name, 0,
_("invalid inode size - %s"), optarg);
exit(1);
}
break;
#endif
case 'v':
verbose = 1;
break;
case 'F':
force = 1;
break;
case 'L':
volume_label = optarg;
break;
case 'M':
mount_dir = optarg;
break;
case 'N':
num_inodes = strtoul(optarg, &tmp, 0);
if (*tmp) {
com_err(program_name, 0,
_("bad num inodes - %s"), optarg);
exit(1);
}
break;
case 'O':
fs_features = 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:
usage();
}
}
if ((optind == argc) && !show_version_only)
usage();
device_name = argv[optind++];
if (!quiet || show_version_only)
fprintf (stderr, "mke2fs %s (%s)\n", E2FSPROGS_VERSION,
E2FSPROGS_DATE);
if (show_version_only) {
fprintf(stderr, _("\tUsing %s\n"),
error_message(EXT2_ET_BASE));
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) {
com_err(program_name, retval,
_("while trying to open journal device %s\n"),
journal_device);
exit(1);
}
if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) {
com_err(program_name, 0,
_("Journal dev blocksize (%d) smaller than "
"minimum blocksize %d\n"), jfs->blocksize,
-blocksize);
exit(1);
}
blocksize = jfs->blocksize;
fs_param.s_log_block_size =
int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
ext2fs_close(jfs);
}
if (blocksize > sys_page_size) {
if (!force) {
com_err(program_name, 0,
_("%d-byte blocks too big for system (max %d)"),
blocksize, sys_page_size);
proceed_question();
}
fprintf(stderr, _("Warning: %d-byte blocks too big for system "
"(max %d), forced to continue\n"),
blocksize, sys_page_size);
}
if (optind < argc) {
fs_param.s_blocks_count = parse_num_blocks(argv[optind++],
fs_param.s_log_block_size);
if (!fs_param.s_blocks_count) {
com_err(program_name, 0, _("invalid blocks count - %s"),
argv[optind - 1]);
exit(1);
}
}
if (optind < argc)
usage();
if (!force)
check_plausibility(device_name);
check_mount(device_name, force, _("filesystem"));
fs_param.s_log_frag_size = fs_param.s_log_block_size;
if (noaction && fs_param.s_blocks_count) {
dev_size = fs_param.s_blocks_count;
retval = 0;
} else {
retry:
retval = ext2fs_get_device_size(device_name,
EXT2_BLOCK_SIZE(&fs_param),
&dev_size);
if ((retval == EFBIG) &&
(blocksize == 0) &&
(fs_param.s_log_block_size == 0)) {
fs_param.s_log_block_size = 2;
blocksize = 4096;
goto retry;
}
}
if (retval && (retval != EXT2_ET_UNIMPLEMENTED)) {
com_err(program_name, retval,
_("while trying to determine filesystem size"));
exit(1);
}
if (!fs_param.s_blocks_count) {
if (retval == EXT2_ET_UNIMPLEMENTED) {
com_err(program_name, 0,
_("Couldn't determine device size; you "
"must specify\nthe size of the "
"filesystem\n"));
exit(1);
} else {
if (dev_size == 0) {
com_err(program_name, 0,
_("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"
));
exit(1);
}
fs_param.s_blocks_count = dev_size;
if (sys_page_size > EXT2_BLOCK_SIZE(&fs_param))
fs_param.s_blocks_count &= ~((sys_page_size /
EXT2_BLOCK_SIZE(&fs_param))-1);
}
} else if (!force && (fs_param.s_blocks_count > dev_size)) {
com_err(program_name, 0,
_("Filesystem larger than apparent device size."));
proceed_question();
}
if (!fs_type) {
int megs = fs_param.s_blocks_count *
(EXT2_BLOCK_SIZE(&fs_param) / 1024) / 1024;
if (megs <= 3)
fs_type = "floppy";
else if (megs <= 512)
fs_type = "small";
else
fs_type = "default";
}
/* Figure out what features should be enabled */
if (r_opt == EXT2_GOOD_OLD_REV && fs_features) {
fprintf(stderr, _("Filesystem features not supported "
"with revision 0 filesystems\n"));
exit(1);
}
profile_get_string(profile, "defaults", "base_features", 0,
"filetype,sparse_super", &tmp);
profile_get_string(profile, "fs_types", fs_type, "base_features",
tmp, &tmp2);
edit_feature(tmp2, &fs_param.s_feature_compat);
free(tmp);
free(tmp2);
profile_get_string(profile, "defaults", "default_features", 0,
"", &tmp);
profile_get_string(profile, "fs_types", fs_type,
"default_features", tmp, &tmp2);
edit_feature(fs_features ? fs_features : tmp2,
&fs_param.s_feature_compat);
free(tmp);
free(tmp2);
if (s_opt > 0)
fs_param.s_feature_ro_compat |=
EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
else if (s_opt == 0)
fs_param.s_feature_ro_compat &=
~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
if (journal_size != 0)
fs_param.s_feature_compat |=
EXT3_FEATURE_COMPAT_HAS_JOURNAL;
if (fs_param.s_feature_incompat &
EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
if (!fs_type)
fs_type = "journal";
reserved_ratio = 0;
fs_param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
fs_param.s_feature_compat = 0;
fs_param.s_feature_ro_compat = 0;
}
if (fs_param.s_rev_level == EXT2_GOOD_OLD_REV) {
fs_param.s_feature_incompat = 0;
fs_param.s_feature_compat = 0;
fs_param.s_feature_ro_compat = 0;
}
/* Set first meta blockgroup via an environment variable */
/* (this is mostly for debugging purposes) */
if ((fs_param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
((tmp = getenv("MKE2FS_FIRST_META_BG"))))
fs_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) {
com_err(program_name, retval,
_("while trying to determine hardware sector size"));
exit(1);
}
if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL)
sector_size = atoi(tmp);
if (blocksize <= 0) {
profile_get_integer(profile, "defaults", "blocksize", 0,
1024, &use_bsize);
profile_get_integer(profile, "fs_types", fs_type,
"blocksize", use_bsize, &use_bsize);
if (use_bsize == -1) {
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;
fs_param.s_blocks_count /= blocksize / 1024;
}
if (inode_ratio == 0) {
profile_get_integer(profile, "defaults", "inode_ratio", 0,
8192, &inode_ratio);
profile_get_integer(profile, "fs_types", fs_type,
"inode_ratio", inode_ratio,
&inode_ratio);
if (inode_ratio < blocksize)
inode_ratio = blocksize;
}
fs_param.s_log_frag_size = fs_param.s_log_block_size =
int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
blocksize = EXT2_BLOCK_SIZE(&fs_param);
if (extended_opts)
parse_extended_opts(&fs_param, extended_opts);
/* Since sparse_super is the default, we would only have a problem
* here if it was explicitly disabled.
*/
if ((fs_param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) &&
!(fs_param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
com_err(program_name, 0,
_("reserved online resize blocks not supported "
"on non-sparse filesystem"));
exit(1);
}
if (fs_param.s_blocks_per_group) {
if (fs_param.s_blocks_per_group < 256 ||
fs_param.s_blocks_per_group > 8 * (unsigned) blocksize) {
com_err(program_name, 0,
_("blocks per group count out of range"));
exit(1);
}
}
if (!force && fs_param.s_blocks_count >= (1 << 31)) {
com_err(program_name, 0,
_("Filesystem too large. No more than 2**31-1 blocks\n"
"\t (8TB using a blocksize of 4k) are currently supported."));
exit(1);
}
if ((blocksize > 4096) &&
(fs_param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL))
fprintf(stderr, _("\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\n"));
if (inode_size) {
if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
inode_size > EXT2_BLOCK_SIZE(&fs_param) ||
inode_size & (inode_size - 1)) {
com_err(program_name, 0,
_("invalid inode size %d (min %d/max %d)"),
inode_size, EXT2_GOOD_OLD_INODE_SIZE,
blocksize);
exit(1);
}
if (inode_size != EXT2_GOOD_OLD_INODE_SIZE)
fprintf(stderr, _("Warning: %d-byte inodes not usable "
"on most systems\n"),
inode_size);
fs_param.s_inode_size = inode_size;
}
/*
* Calculate number of inodes based on the inode ratio
*/
fs_param.s_inodes_count = num_inodes ? num_inodes :
((__u64) fs_param.s_blocks_count * blocksize)
/ inode_ratio;
/*
* Calculate number of blocks to reserve
*/
fs_param.s_r_blocks_count = (fs_param.s_blocks_count * reserved_ratio)
/ 100;
}
int 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, EXT2_FLAG_EXCLUSIVE, &fs_param,
io_ptr, &fs);
if (retval) {
com_err(device_name, retval, _("while setting up superblock"));
exit(1);
}
/*
* 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)) {
com_err (program_name, 0, _("unknown os - %s"), creator_os);
exit(1);
}
/*
* 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) {
com_err(program_name, retval,
_("while trying to allocate filesystem tables"));
exit(1);
}
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) {
com_err(program_name, retval,
_("while zeroing block %u at end of filesystem"),
ret_blk);
}
setup_lazy_bg(fs);
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) {
com_err("ext2fs_create_resize_inode", retval,
_("while reserving blocks for online resize"));
exit(1);
}
}
}
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) {
com_err(program_name, retval,
_("while trying to open journal device %s\n"),
journal_device);
exit(1);
}
if (!quiet) {
printf(_("Adding journal to device %s: "),
journal_device);
fflush(stdout);
}
retval = ext2fs_add_journal_device(fs, jfs);
if(retval) {
com_err (program_name, retval,
_("\n\twhile trying to add journal to device %s"),
journal_device);
exit(1);
}
if (!quiet)
printf(_("done\n"));
ext2fs_close(jfs);
free(journal_device);
} else if ((journal_size) ||
(fs_param.s_feature_compat &
EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
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) {
com_err (program_name, retval,
_("\n\twhile trying to create journal"));
exit(1);
}
if (!quiet)
printf(_("done\n"));
}
no_journal:
if (!quiet)
printf(_("Writing superblocks and "
"filesystem accounting information: "));
retval = ext2fs_flush(fs);
if (retval) {
fprintf(stderr,
_("\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;
}
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