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e2fsprogs/misc/tune2fs.c

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/*
* tune2fs.c - Change the file system parameters on an ext2 file system
*
* Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
* Laboratoire MASI, Institut Blaise Pascal
* Universite Pierre et Marie Curie (Paris VI)
*
* Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
*
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Public
* License.
* %End-Header%
*/
/*
* History:
* 93/06/01 - Creation
* 93/10/31 - Added the -c option to change the maximal mount counts
* 93/12/14 - Added -l flag to list contents of superblock
* M.J.E. Mol (marcel@duteca.et.tudelft.nl)
* F.W. ten Wolde (franky@duteca.et.tudelft.nl)
* 93/12/29 - Added the -e option to change errors behavior
* 94/02/27 - Ported to use the ext2fs library
* 94/03/06 - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
*/
#define _XOPEN_SOURCE 500 /* for inclusion of strptime() */
#define _BSD_SOURCE /* for inclusion of strcasecmp() */
#include <fcntl.h>
#include <grp.h>
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#else
extern char *optarg;
extern int optind;
#endif
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <sys/types.h>
#include <libgen.h>
#include <limits.h>
#include "ext2fs/ext2_fs.h"
#include "ext2fs/ext2fs.h"
#include "et/com_err.h"
#include "uuid/uuid.h"
#include "e2p/e2p.h"
#include "jfs_user.h"
#include "util.h"
#include "blkid/blkid.h"
#include "../version.h"
#include "nls-enable.h"
const char * program_name = "tune2fs";
char * device_name;
char * new_label, *new_last_mounted, *new_UUID;
char * io_options;
static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
static int I_flag;
static time_t last_check_time;
static int print_label;
static int max_mount_count, mount_count, mount_flags;
static unsigned long interval, reserved_blocks;
static double reserved_ratio;
static unsigned long resgid, resuid;
static unsigned short errors;
static int open_flag;
static char *features_cmd;
static char *mntopts_cmd;
static int stride, stripe_width;
static int stride_set, stripe_width_set;
static char *extended_cmd;
static unsigned long new_inode_size;
int journal_size, journal_flags;
char *journal_device;
static struct list_head blk_move_list;
struct blk_move {
struct list_head list;
blk_t old_loc;
blk_t new_loc;
};
static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
void do_findfs(int argc, char **argv);
static void usage(void)
{
fprintf(stderr,
_("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
"[-g group]\n"
"\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
"\t[-m reserved_blocks_percent] "
"[-o [^]mount_options[,...]] \n"
"\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
"[-L volume_label]\n"
"\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
"\t[-E extended-option[,...]] [-T last_check_time] "
"[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
exit (1);
}
static __u32 ok_features[3] = {
/* Compat */
EXT3_FEATURE_COMPAT_HAS_JOURNAL |
EXT2_FEATURE_COMPAT_DIR_INDEX,
/* Incompat */
EXT2_FEATURE_INCOMPAT_FILETYPE |
EXT3_FEATURE_INCOMPAT_EXTENTS |
EXT4_FEATURE_INCOMPAT_FLEX_BG,
/* R/O compat */
EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
};
static __u32 clear_ok_features[3] = {
/* Compat */
EXT3_FEATURE_COMPAT_HAS_JOURNAL |
EXT2_FEATURE_COMPAT_RESIZE_INODE |
EXT2_FEATURE_COMPAT_DIR_INDEX,
/* Incompat */
EXT2_FEATURE_INCOMPAT_FILETYPE |
EXT4_FEATURE_INCOMPAT_FLEX_BG,
/* R/O compat */
EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
EXT4_FEATURE_RO_COMPAT_GDT_CSUM
};
/*
* Remove an external journal from the filesystem
*/
static void remove_journal_device(ext2_filsys fs)
{
char *journal_path;
ext2_filsys jfs;
char buf[1024];
journal_superblock_t *jsb;
int i, nr_users;
errcode_t retval;
int commit_remove_journal = 0;
io_manager io_ptr;
if (f_flag)
commit_remove_journal = 1; /* force removal even if error */
uuid_unparse(fs->super->s_journal_uuid, buf);
journal_path = blkid_get_devname(NULL, "UUID", buf);
if (!journal_path) {
journal_path =
ext2fs_find_block_device(fs->super->s_journal_dev);
if (!journal_path)
return;
}
#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_path, EXT2_FLAG_RW|
EXT2_FLAG_JOURNAL_DEV_OK, 0,
fs->blocksize, io_ptr, &jfs);
if (retval) {
com_err(program_name, retval,
_("while trying to open external journal"));
goto no_valid_journal;
}
if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
fprintf(stderr, _("%s is not a journal device.\n"),
journal_path);
goto no_valid_journal;
}
/* Get the journal superblock */
if ((retval = io_channel_read_blk(jfs->io, 1, -1024, buf))) {
com_err(program_name, retval,
_("while reading journal superblock"));
goto no_valid_journal;
}
jsb = (journal_superblock_t *) buf;
if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
(jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
fputs(_("Journal superblock not found!\n"), stderr);
goto no_valid_journal;
}
/* Find the filesystem UUID */
nr_users = ntohl(jsb->s_nr_users);
for (i=0; i < nr_users; i++) {
if (memcmp(fs->super->s_uuid,
&jsb->s_users[i*16], 16) == 0)
break;
}
if (i >= nr_users) {
fputs(_("Filesystem's UUID not found on journal device.\n"),
stderr);
commit_remove_journal = 1;
goto no_valid_journal;
}
nr_users--;
for (i=0; i < nr_users; i++)
memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16);
jsb->s_nr_users = htonl(nr_users);
/* Write back the journal superblock */
if ((retval = io_channel_write_blk(jfs->io, 1, -1024, buf))) {
com_err(program_name, retval,
"while writing journal superblock.");
goto no_valid_journal;
}
commit_remove_journal = 1;
no_valid_journal:
if (commit_remove_journal == 0) {
fputs(_("Journal NOT removed\n"), stderr);
exit(1);
}
fs->super->s_journal_dev = 0;
uuid_clear(fs->super->s_journal_uuid);
ext2fs_mark_super_dirty(fs);
fputs(_("Journal removed\n"), stdout);
free(journal_path);
}
/* Helper function for remove_journal_inode */
static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
int blockcnt EXT2FS_ATTR((unused)),
void *private EXT2FS_ATTR((unused)))
{
blk_t block;
int group;
block = *blocknr;
ext2fs_unmark_block_bitmap(fs->block_map,block);
group = ext2fs_group_of_blk(fs, block);
fs->group_desc[group].bg_free_blocks_count++;
ext2fs_group_desc_csum_set(fs, group);
fs->super->s_free_blocks_count++;
return 0;
}
/*
* Remove the journal inode from the filesystem
*/
static void remove_journal_inode(ext2_filsys fs)
{
struct ext2_inode inode;
errcode_t retval;
ino_t ino = fs->super->s_journal_inum;
retval = ext2fs_read_inode(fs, ino, &inode);
if (retval) {
com_err(program_name, retval,
_("while reading journal inode"));
exit(1);
}
if (ino == EXT2_JOURNAL_INO) {
retval = ext2fs_read_bitmaps(fs);
if (retval) {
com_err(program_name, retval,
_("while reading bitmaps"));
exit(1);
}
retval = ext2fs_block_iterate(fs, ino,
BLOCK_FLAG_READ_ONLY, NULL,
release_blocks_proc, NULL);
if (retval) {
com_err(program_name, retval,
_("while clearing journal inode"));
exit(1);
}
memset(&inode, 0, sizeof(inode));
ext2fs_mark_bb_dirty(fs);
fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
} else
inode.i_flags &= ~EXT2_IMMUTABLE_FL;
retval = ext2fs_write_inode(fs, ino, &inode);
if (retval) {
com_err(program_name, retval,
_("while writing journal inode"));
exit(1);
}
fs->super->s_journal_inum = 0;
ext2fs_mark_super_dirty(fs);
}
/*
* Update the default mount options
*/
static void update_mntopts(ext2_filsys fs, char *mntopts)
{
struct ext2_super_block *sb= fs->super;
if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
fprintf(stderr, _("Invalid mount option set: %s\n"),
mntopts);
exit(1);
}
ext2fs_mark_super_dirty(fs);
}
/*
* Update the feature set as provided by the user.
*/
static void update_feature_set(ext2_filsys fs, char *features)
{
struct ext2_super_block *sb= fs->super;
__u32 old_features[3];
int type_err;
unsigned int mask_err;
#define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
((&sb->s_feature_compat)[(type)] & (mask)))
#define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
!((&sb->s_feature_compat)[(type)] & (mask)))
#define FEATURE_CHANGED(type, mask) ((mask) & \
(old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
if (e2p_edit_feature2(features, &sb->s_feature_compat,
ok_features, clear_ok_features,
&type_err, &mask_err)) {
if (!mask_err)
fprintf(stderr,
_("Invalid filesystem option set: %s\n"),
features);
else if (type_err & E2P_FEATURE_NEGATE_FLAG)
fprintf(stderr, _("Clearing filesystem feature '%s' "
"not supported.\n"),
e2p_feature2string(type_err &
E2P_FEATURE_TYPE_MASK,
mask_err));
else
fprintf(stderr, _("Setting filesystem feature '%s' "
"not supported.\n"),
e2p_feature2string(type_err, mask_err));
exit(1);
}
if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
if ((mount_flags & EXT2_MF_MOUNTED) &&
!(mount_flags & EXT2_MF_READONLY)) {
fputs(_("The has_journal feature may only be "
"cleared when the filesystem is\n"
"unmounted or mounted "
"read-only.\n"), stderr);
exit(1);
}
if (sb->s_feature_incompat &
EXT3_FEATURE_INCOMPAT_RECOVER) {
fputs(_("The needs_recovery flag is set. "
"Please run e2fsck before clearing\n"
"the has_journal flag.\n"), stderr);
exit(1);
}
if (sb->s_journal_inum) {
remove_journal_inode(fs);
}
if (sb->s_journal_dev) {
remove_journal_device(fs);
}
}
if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
/*
* If adding a journal flag, let the create journal
* code below handle creating setting the flag and
* creating the journal. We supply a default size if
* necessary.
*/
if (!journal_size)
journal_size = -1;
sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
}
if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
if (!sb->s_def_hash_version)
sb->s_def_hash_version = EXT2_HASH_TEA;
if (uuid_is_null((unsigned char *) sb->s_hash_seed))
uuid_generate((unsigned char *) sb->s_hash_seed);
}
if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
if (ext2fs_check_desc(fs)) {
fputs(_("Clearing the flex_bg flag would "
"cause the the filesystem to be\n"
"inconsistent.\n"), stderr);
exit(1);
}
}
if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
if ((mount_flags & EXT2_MF_MOUNTED) &&
!(mount_flags & EXT2_MF_READONLY)) {
fputs(_("The huge_file feature may only be "
"cleared when the filesystem is\n"
"unmounted or mounted "
"read-only.\n"), stderr);
exit(1);
}
}
if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
(sb->s_feature_compat || sb->s_feature_ro_compat ||
sb->s_feature_incompat))
ext2fs_update_dynamic_rev(fs);
if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
EXT4_FEATURE_RO_COMPAT_GDT_CSUM) ||
FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
EXT2_FEATURE_INCOMPAT_FILETYPE) ||
FEATURE_CHANGED(E2P_FEATURE_COMPAT,
EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
EXT2_FEATURE_RO_COMPAT_LARGE_FILE)) {
sb->s_state &= ~EXT2_VALID_FS;
printf("\n%s\n", _(please_fsck));
if (mount_flags & EXT2_MF_READONLY)
printf(_("(and reboot afterwards!)\n"));
}
if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
(old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
(old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
ext2fs_mark_super_dirty(fs);
}
/*
* Add a journal to the filesystem.
*/
static void add_journal(ext2_filsys fs)
{
unsigned long journal_blocks;
errcode_t retval;
ext2_filsys jfs;
io_manager io_ptr;
if (fs->super->s_feature_compat &
EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
fputs(_("The filesystem already has a journal.\n"), stderr);
goto err;
}
if (journal_device) {
check_plausibility(journal_device);
check_mount(journal_device, 0, _("journal"));
#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_RW|
EXT2_FLAG_JOURNAL_DEV_OK, 0,
fs->blocksize, io_ptr, &jfs);
if (retval) {
com_err(program_name, retval,
_("\n\twhile trying to open journal on %s\n"),
journal_device);
goto err;
}
printf(_("Creating journal on device %s: "),
journal_device);
fflush(stdout);
retval = ext2fs_add_journal_device(fs, jfs);
ext2fs_close(jfs);
if (retval) {
com_err (program_name, retval,
_("while adding filesystem to journal on %s"),
journal_device);
goto err;
}
fputs(_("done\n"), stdout);
} else if (journal_size) {
fputs(_("Creating journal inode: "), stdout);
fflush(stdout);
journal_blocks = figure_journal_size(journal_size, fs);
retval = ext2fs_add_journal_inode(fs, journal_blocks,
journal_flags);
if (retval) {
fprintf(stderr, "\n");
com_err(program_name, retval,
_("\n\twhile trying to create journal file"));
exit(1);
} else
fputs(_("done\n"), stdout);
/*
* If the filesystem wasn't mounted, we need to force
* the block group descriptors out.
*/
if ((mount_flags & EXT2_MF_MOUNTED) == 0)
fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
}
print_check_message(fs);
return;
err:
if (journal_device)
free(journal_device);
exit(1);
}
static void parse_e2label_options(int argc, char ** argv)
{
if ((argc < 2) || (argc > 3)) {
fputs(_("Usage: e2label device [newlabel]\n"), stderr);
exit(1);
}
io_options = strchr(argv[1], '?');
if (io_options)
*io_options++ = 0;
device_name = blkid_get_devname(NULL, argv[1], NULL);
if (!device_name) {
com_err("e2label", 0, _("Unable to resolve '%s'"),
argv[1]);
exit(1);
}
open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
if (argc == 3) {
open_flag |= EXT2_FLAG_RW;
L_flag = 1;
new_label = argv[2];
} else
print_label++;
}
static time_t parse_time(char *str)
{
struct tm ts;
if (strcmp(str, "now") == 0) {
return (time(0));
}
memset(&ts, 0, sizeof(ts));
#ifdef HAVE_STRPTIME
strptime(str, "%Y%m%d%H%M%S", &ts);
#else
sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
&ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
ts.tm_year -= 1900;
ts.tm_mon -= 1;
if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
ts.tm_min > 59 || ts.tm_sec > 61)
ts.tm_mday = 0;
#endif
if (ts.tm_mday == 0) {
com_err(program_name, 0,
_("Couldn't parse date/time specifier: %s"),
str);
usage();
}
ts.tm_isdst = -1;
return (mktime(&ts));
}
static void parse_tune2fs_options(int argc, char **argv)
{
int c;
char * tmp;
struct group * gr;
struct passwd * pw;
open_flag = 0;
printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:")) != EOF)
switch (c)
{
case 'c':
max_mount_count = strtol (optarg, &tmp, 0);
if (*tmp || max_mount_count > 16000) {
com_err (program_name, 0,
_("bad mounts count - %s"),
optarg);
usage();
}
if (max_mount_count == 0)
max_mount_count = -1;
c_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 'C':
mount_count = strtoul (optarg, &tmp, 0);
if (*tmp || mount_count > 16000) {
com_err (program_name, 0,
_("bad mounts count - %s"),
optarg);
usage();
}
C_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 'e':
if (strcmp (optarg, "continue") == 0)
errors = EXT2_ERRORS_CONTINUE;
else if (strcmp (optarg, "remount-ro") == 0)
errors = EXT2_ERRORS_RO;
else if (strcmp (optarg, "panic") == 0)
errors = EXT2_ERRORS_PANIC;
else {
com_err (program_name, 0,
_("bad error behavior - %s"),
optarg);
usage();
}
e_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 'E':
extended_cmd = optarg;
open_flag |= EXT2_FLAG_RW;
break;
case 'f': /* Force */
f_flag = 1;
break;
case 'g':
resgid = strtoul (optarg, &tmp, 0);
if (*tmp) {
gr = getgrnam (optarg);
if (gr == NULL)
tmp = optarg;
else {
resgid = gr->gr_gid;
*tmp =0;
}
}
if (*tmp) {
com_err (program_name, 0,
_("bad gid/group name - %s"),
optarg);
usage();
}
g_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 'i':
interval = strtoul (optarg, &tmp, 0);
switch (*tmp) {
case 's':
tmp++;
break;
case '\0':
case 'd':
case 'D': /* days */
interval *= 86400;
if (*tmp != '\0')
tmp++;
break;
case 'm':
case 'M': /* months! */
interval *= 86400 * 30;
tmp++;
break;
case 'w':
case 'W': /* weeks */
interval *= 86400 * 7;
tmp++;
break;
}
if (*tmp) {
com_err (program_name, 0,
_("bad interval - %s"), optarg);
usage();
}
i_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 'j':
if (!journal_size)
journal_size = -1;
open_flag = EXT2_FLAG_RW;
break;
case 'J':
parse_journal_opts(optarg);
open_flag = EXT2_FLAG_RW;
break;
case 'l':
l_flag = 1;
break;
case 'L':
new_label = optarg;
L_flag = 1;
open_flag |= EXT2_FLAG_RW |
EXT2_FLAG_JOURNAL_DEV_OK;
break;
case 'm':
reserved_ratio = strtod(optarg, &tmp);
if (*tmp || reserved_ratio > 50) {
com_err (program_name, 0,
_("bad reserved block ratio - %s"),
optarg);
usage();
}
m_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 'M':
new_last_mounted = optarg;
M_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 'o':
if (mntopts_cmd) {
com_err (program_name, 0,
_("-o may only be specified once"));
usage();
}
mntopts_cmd = optarg;
open_flag = EXT2_FLAG_RW;
break;
case 'O':
if (features_cmd) {
com_err (program_name, 0,
_("-O may only be specified once"));
usage();
}
features_cmd = optarg;
open_flag = EXT2_FLAG_RW;
break;
case 'r':
reserved_blocks = strtoul (optarg, &tmp, 0);
if (*tmp) {
com_err (program_name, 0,
_("bad reserved blocks count - %s"),
optarg);
usage();
}
r_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 's': /* Deprecated */
s_flag = atoi(optarg);
open_flag = EXT2_FLAG_RW;
break;
case 'T':
T_flag = 1;
last_check_time = parse_time(optarg);
open_flag = EXT2_FLAG_RW;
break;
case 'u':
resuid = strtoul (optarg, &tmp, 0);
if (*tmp) {
pw = getpwnam (optarg);
if (pw == NULL)
tmp = optarg;
else {
resuid = pw->pw_uid;
*tmp = 0;
}
}
if (*tmp) {
com_err (program_name, 0,
_("bad uid/user name - %s"),
optarg);
usage();
}
u_flag = 1;
open_flag = EXT2_FLAG_RW;
break;
case 'U':
new_UUID = optarg;
U_flag = 1;
open_flag = EXT2_FLAG_RW |
EXT2_FLAG_JOURNAL_DEV_OK;
break;
case 'I':
new_inode_size = strtoul (optarg, &tmp, 0);
if (*tmp) {
com_err (program_name, 0,
_("bad inode size - %s"),
optarg);
usage();
}
if (!((new_inode_size &
(new_inode_size - 1)) == 0)) {
com_err (program_name, 0,
_("Inode size must be a "
"power of two- %s"),
optarg);
usage();
}
open_flag = EXT2_FLAG_RW;
I_flag = 1;
break;
default:
usage();
}
if (optind < argc - 1 || optind == argc)
usage();
if (!open_flag && !l_flag)
usage();
io_options = strchr(argv[optind], '?');
if (io_options)
*io_options++ = 0;
device_name = blkid_get_devname(NULL, argv[optind], NULL);
if (!device_name) {
com_err("tune2fs", 0, _("Unable to resolve '%s'"),
argv[optind]);
exit(1);
}
}
void do_findfs(int argc, char **argv)
{
char *dev;
if ((argc != 2) ||
(strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
exit(2);
}
dev = blkid_get_devname(NULL, argv[1], NULL);
if (!dev) {
com_err("findfs", 0, _("Unable to resolve '%s'"),
argv[1]);
exit(1);
}
puts(dev);
exit(0);
}
static void parse_extended_opts(ext2_filsys fs, 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, "test_fs")) {
fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
printf("Setting test filesystem flag\n");
ext2fs_mark_super_dirty(fs);
} else if (!strcmp(token, "^test_fs")) {
fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
printf("Clearing test filesystem flag\n");
ext2fs_mark_super_dirty(fs);
} else if (strcmp(token, "stride") == 0) {
if (!arg) {
r_usage++;
continue;
}
stride = strtoul(arg, &p, 0);
if (*p || (stride == 0)) {
fprintf(stderr,
_("Invalid RAID stride: %s\n"),
arg);
r_usage++;
continue;
}
stride_set = 1;
} else if (strcmp(token, "stripe-width") == 0 ||
strcmp(token, "stripe_width") == 0) {
if (!arg) {
r_usage++;
continue;
}
stripe_width = strtoul(arg, &p, 0);
if (*p || (stripe_width == 0)) {
fprintf(stderr,
_("Invalid RAID stripe-width: %s\n"),
arg);
r_usage++;
continue;
}
stripe_width_set = 1;
} 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=<RAID per-disk chunk size in blocks>\n"
"\tstripe-width=<RAID stride*data disks in blocks>\n"
"\ttest_fs\n"
"\t^test_fs\n"));
free(buf);
exit(1);
}
free(buf);
}
static int get_move_bitmap(ext2_filsys fs, int new_ino_blks_per_grp,
ext2fs_block_bitmap bmap)
{
dgrp_t i;
blk_t j, needed_blocks = 0;
blk_t start_blk, end_blk;
for (i = 0; i < fs->group_desc_count; i++) {
start_blk = fs->group_desc[i].bg_inode_table +
fs->inode_blocks_per_group;
end_blk = fs->group_desc[i].bg_inode_table +
new_ino_blks_per_grp;
for (j = start_blk; j < end_blk; j++) {
if (ext2fs_test_block_bitmap(fs->block_map, j)) {
/* FIXME!!
* What happens if the block is marked
* as a bad block
*/
ext2fs_mark_block_bitmap(bmap, j);
needed_blocks++;
} else {
/*
* We are going to use this block for
* inode table. So mark them used.
*/
ext2fs_mark_block_bitmap(fs->block_map, j);
}
}
}
if (needed_blocks > fs->super->s_free_blocks_count ) {
return ENOSPC;
}
return 0;
}
static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
{
char *buf;
errcode_t retval;
blk_t blk, new_blk;
struct blk_move *bmv;
retval = ext2fs_get_mem(fs->blocksize, &buf);
if (retval)
return retval;
for (blk = fs->super->s_first_data_block;
blk < fs->super->s_blocks_count; blk++) {
if (!ext2fs_test_block_bitmap(bmap, blk))
continue;
retval = ext2fs_new_block(fs, blk, NULL, &new_blk);
if (retval)
goto err_out;
/* Mark this block as allocated */
ext2fs_mark_block_bitmap(fs->block_map, new_blk);
/* Add it to block move list */
retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
if (retval)
goto err_out;
bmv->old_loc = blk;
bmv->new_loc = new_blk;
list_add(&(bmv->list), &blk_move_list);
retval = io_channel_read_blk(fs->io, blk, 1, buf);
if (retval)
goto err_out;
retval = io_channel_write_blk(fs->io, new_blk, 1, buf);
if (retval)
goto err_out;
}
err_out:
ext2fs_free_mem(&buf);
return retval;
}
static blk_t transalate_block(blk_t blk)
{
struct list_head *entry;
struct blk_move *bmv;
list_for_each(entry, &blk_move_list) {
bmv = list_entry(entry, struct blk_move, list);
if (bmv->old_loc == blk)
return bmv->new_loc;
}
return 0;
}
static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
blk_t *block_nr,
e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
blk_t ref_block EXT2FS_ATTR((unused)),
int ref_offset EXT2FS_ATTR((unused)),
void *priv_data EXT2FS_ATTR((unused)))
{
int ret = 0;
blk_t new_blk;
new_blk = transalate_block(*block_nr);
if (new_blk) {
*block_nr = new_blk;
/*
* This will force the ext2fs_write_inode in the iterator
*/
ret |= BLOCK_CHANGED;
}
return ret;
}
static int inode_scan_and_fix(ext2_filsys fs)
{
errcode_t retval = 0;
ext2_ino_t ino;
blk_t blk;
char *block_buf = 0;
struct ext2_inode inode;
ext2_inode_scan scan = NULL;
retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
if (retval)
return retval;
retval = ext2fs_open_inode_scan(fs, 0, &scan);
if (retval)
goto err_out;
while (1) {
retval = ext2fs_get_next_inode(scan, &ino, &inode);
if (retval)
goto err_out;
if (!ino)
break;
if (inode.i_links_count == 0)
continue; /* inode not in use */
/* FIXME!!
* If we end up modifying the journal inode
* the sb->s_jnl_blocks will differ. But a
* subsequent e2fsck fixes that.
* Do we need to fix this ??
*/
if (inode.i_file_acl) {
blk = transalate_block(inode.i_file_acl);
if (!blk)
continue;
inode.i_file_acl = blk;
/*
* Write the inode to disk so that inode table
* resizing can work
*/
retval = ext2fs_write_inode(fs, ino, &inode);
if (retval)
goto err_out;
}
if (!ext2fs_inode_has_valid_blocks(&inode))
continue;
retval = ext2fs_block_iterate2(fs, ino, 0,
block_buf, process_block,
0);
if (retval)
goto err_out;
}
err_out:
ext2fs_free_mem(&block_buf);
return retval;
}
static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
{
dgrp_t i;
blk_t blk;
errcode_t retval;
int new_ino_blks_per_grp;
unsigned int j;
char *old_itable = NULL, *new_itable = NULL;
char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
unsigned long old_ino_size;
int old_itable_size, new_itable_size;
old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
old_ino_size = EXT2_INODE_SIZE(fs->super);
new_ino_blks_per_grp = ext2fs_div_ceil(
EXT2_INODES_PER_GROUP(fs->super) *
new_ino_size,
fs->blocksize);
new_itable_size = new_ino_blks_per_grp * fs->blocksize;
retval = ext2fs_get_mem(old_itable_size, &old_itable);
if (retval)
return retval;
retval = ext2fs_get_mem(new_itable_size, &new_itable);
if (retval)
goto err_out;
tmp_old_itable = old_itable;
tmp_new_itable = new_itable;
for (i = 0; i < fs->group_desc_count; i++) {
blk = fs->group_desc[i].bg_inode_table;
retval = io_channel_read_blk(fs->io, blk,
fs->inode_blocks_per_group, old_itable);
if (retval)
goto err_out;
for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
memcpy(new_itable, old_itable, old_ino_size);
memset(new_itable+old_ino_size, 0,
new_ino_size - old_ino_size);
new_itable += new_ino_size;
old_itable += old_ino_size;
}
/* reset the pointer */
old_itable = tmp_old_itable;
new_itable = tmp_new_itable;
retval = io_channel_write_blk(fs->io, blk,
new_ino_blks_per_grp, new_itable);
if (retval)
goto err_out;
}
/* Update the meta data */
fs->inode_blocks_per_group = new_ino_blks_per_grp;
fs->super->s_inode_size = new_ino_size;
err_out:
if (old_itable)
ext2fs_free_mem(&old_itable);
if (new_itable)
ext2fs_free_mem(&new_itable);
return retval;
}
static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
{
blk_t blk;
ext2_ino_t ino;
unsigned int group = 0;
unsigned int count = 0;
int total_free = 0;
int group_free = 0;
/*
* First calculate the block statistics
*/
for (blk = fs->super->s_first_data_block;
blk < fs->super->s_blocks_count; blk++) {
if (!ext2fs_fast_test_block_bitmap(fs->block_map, blk)) {
group_free++;
total_free++;
}
count++;
if ((count == fs->super->s_blocks_per_group) ||
(blk == fs->super->s_blocks_count-1)) {
fs->group_desc[group++].bg_free_blocks_count =
group_free;
count = 0;
group_free = 0;
}
}
fs->super->s_free_blocks_count = total_free;
/*
* Next, calculate the inode statistics
*/
group_free = 0;
total_free = 0;
count = 0;
group = 0;
/* Protect loop from wrap-around if s_inodes_count maxed */
for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
if (!ext2fs_fast_test_inode_bitmap(fs->inode_map, ino)) {
group_free++;
total_free++;
}
count++;
if ((count == fs->super->s_inodes_per_group) ||
(ino == fs->super->s_inodes_count)) {
fs->group_desc[group++].bg_free_inodes_count =
group_free;
count = 0;
group_free = 0;
}
}
fs->super->s_free_inodes_count = total_free;
ext2fs_mark_super_dirty(fs);
return 0;
}
#define list_for_each_safe(pos, pnext, head) \
for (pos = (head)->next, pnext = pos->next; pos != (head); \
pos = pnext, pnext = pos->next)
static void free_blk_move_list(void)
{
struct list_head *entry, *tmp;
struct blk_move *bmv;
list_for_each_safe(entry, tmp, &blk_move_list) {
bmv = list_entry(entry, struct blk_move, list);
list_del(entry);
ext2fs_free_mem(&bmv);
}
return ;
}
static int resize_inode(ext2_filsys fs, unsigned long new_size)
{
errcode_t retval;
int new_ino_blks_per_grp;
ext2fs_block_bitmap bmap;
if (new_size <= EXT2_INODE_SIZE(fs->super)) {
fprintf(stderr, _("New inode size too small\n"));
return EXT2_ET_INVALID_ARGUMENT;
}
ext2fs_read_inode_bitmap(fs);
ext2fs_read_block_bitmap(fs);
INIT_LIST_HEAD(&blk_move_list);
new_ino_blks_per_grp = ext2fs_div_ceil(
EXT2_INODES_PER_GROUP(fs->super)*
new_size,
fs->blocksize);
/* We may change the file system.
* Mark the file system as invalid so that
* the user is prompted to run fsck.
*/
fs->super->s_state &= ~EXT2_VALID_FS;
retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
&bmap);
if (retval)
return retval;
retval = get_move_bitmap(fs, new_ino_blks_per_grp, bmap);
if (retval)
goto err_out;
retval = move_block(fs, bmap);
if (retval)
goto err_out;
retval = inode_scan_and_fix(fs);
if (retval)
goto err_out;
retval = expand_inode_table(fs, new_size);
if (retval)
goto err_out;
ext2fs_calculate_summary_stats(fs);
fs->super->s_state |= EXT2_VALID_FS;
/* mark super block and block bitmap as dirty */
ext2fs_mark_super_dirty(fs);
ext2fs_mark_bb_dirty(fs);
err_out:
free_blk_move_list();
ext2fs_free_block_bitmap(bmap);
return retval;
}
static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
{
errcode_t retval = 0;
const char *tdb_dir;
char tdb_file[PATH_MAX];
char *dev_name, *tmp_name;
#if 0 /* FIXME!! */
/*
* Configuration via a conf file would be
* nice
*/
profile_get_string(profile, "scratch_files",
"directory", 0, 0,
&tdb_dir);
#endif
tmp_name = strdup(name);
dev_name = basename(tmp_name);
tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
if (!tdb_dir)
tdb_dir="/var/lib/e2fsprogs";
if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
access(tdb_dir, W_OK))
return 0;
sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
if (!access(tdb_file, F_OK)) {
if (unlink(tdb_file) < 0) {
retval = errno;
com_err(program_name, retval,
_("while trying to delete %s"),
tdb_file);
return retval;
}
}
set_undo_io_backing_manager(*io_ptr);
*io_ptr = undo_io_manager;
set_undo_io_backup_file(tdb_file);
printf(_("To undo the tune2fs operations please run "
"the command\n undoe2fs %s %s\n\n"),
tdb_file, name);
free(tmp_name);
return retval;
}
int main (int argc, char ** argv)
{
errcode_t retval;
ext2_filsys fs;
struct ext2_super_block *sb;
io_manager io_ptr;
#ifdef ENABLE_NLS
setlocale(LC_MESSAGES, "");
setlocale(LC_CTYPE, "");
bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
textdomain(NLS_CAT_NAME);
#endif
if (argc && *argv)
program_name = *argv;
add_error_table(&et_ext2_error_table);
if (strcmp(get_progname(argv[0]), "findfs") == 0)
do_findfs(argc, argv);
if (strcmp(get_progname(argv[0]), "e2label") == 0)
parse_e2label_options(argc, argv);
else
parse_tune2fs_options(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
if (I_flag) {
/*
* If inode resize is requested use the
* Undo I/O manager
*/
retval = tune2fs_setup_tdb(device_name, &io_ptr);
if (retval)
exit(1);
}
retval = ext2fs_open2(device_name, io_options, open_flag,
0, 0, io_ptr, &fs);
if (retval) {
com_err (program_name, retval, _("while trying to open %s"),
device_name);
fprintf(stderr,
_("Couldn't find valid filesystem superblock.\n"));
exit(1);
}
sb = fs->super;
fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
if (print_label) {
/* For e2label emulation */
printf("%.*s\n", (int) sizeof(sb->s_volume_name),
sb->s_volume_name);
remove_error_table(&et_ext2_error_table);
exit(0);
}
retval = ext2fs_check_if_mounted(device_name, &mount_flags);
if (retval) {
com_err("ext2fs_check_if_mount", retval,
_("while determining whether %s is mounted."),
device_name);
exit(1);
}
/* Normally we only need to write out the superblock */
fs->flags |= EXT2_FLAG_SUPER_ONLY;
if (c_flag) {
sb->s_max_mnt_count = max_mount_count;
ext2fs_mark_super_dirty(fs);
printf (_("Setting maximal mount count to %d\n"),
max_mount_count);
}
if (C_flag) {
sb->s_mnt_count = mount_count;
ext2fs_mark_super_dirty(fs);
printf (_("Setting current mount count to %d\n"), mount_count);
}
if (e_flag) {
sb->s_errors = errors;
ext2fs_mark_super_dirty(fs);
printf (_("Setting error behavior to %d\n"), errors);
}
if (g_flag) {
sb->s_def_resgid = resgid;
ext2fs_mark_super_dirty(fs);
printf (_("Setting reserved blocks gid to %lu\n"), resgid);
}
if (i_flag) {
sb->s_checkinterval = interval;
ext2fs_mark_super_dirty(fs);
printf (_("Setting interval between checks to %lu seconds\n"), interval);
}
if (m_flag) {
sb->s_r_blocks_count = (unsigned int) (reserved_ratio *
sb->s_blocks_count / 100.0);
ext2fs_mark_super_dirty(fs);
printf (_("Setting reserved blocks percentage to %g%% (%u blocks)\n"),
reserved_ratio, sb->s_r_blocks_count);
}
if (r_flag) {
if (reserved_blocks >= sb->s_blocks_count/2) {
com_err (program_name, 0,
_("reserved blocks count is too big (%lu)"),
reserved_blocks);
exit (1);
}
sb->s_r_blocks_count = reserved_blocks;
ext2fs_mark_super_dirty(fs);
printf (_("Setting reserved blocks count to %lu\n"),
reserved_blocks);
}
if (s_flag == 1) {
if (sb->s_feature_ro_compat &
EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
fputs(_("\nThe filesystem already has sparse "
"superblocks.\n"), stderr);
else {
sb->s_feature_ro_compat |=
EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
sb->s_state &= ~EXT2_VALID_FS;
ext2fs_mark_super_dirty(fs);
printf(_("\nSparse superblock flag set. %s"),
_(please_fsck));
}
}
if (s_flag == 0) {
fputs(_("\nClearing the sparse superflag not supported.\n"),
stderr);
exit(1);
}
if (T_flag) {
sb->s_lastcheck = last_check_time;
ext2fs_mark_super_dirty(fs);
printf(_("Setting time filesystem last checked to %s\n"),
ctime(&last_check_time));
}
if (u_flag) {
sb->s_def_resuid = resuid;
ext2fs_mark_super_dirty(fs);
printf (_("Setting reserved blocks uid to %lu\n"), resuid);
}
if (L_flag) {
if (strlen(new_label) > sizeof(sb->s_volume_name))
fputs(_("Warning: label too long, truncating.\n"),
stderr);
memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
strncpy(sb->s_volume_name, new_label,
sizeof(sb->s_volume_name));
ext2fs_mark_super_dirty(fs);
}
if (M_flag) {
memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
strncpy(sb->s_last_mounted, new_last_mounted,
sizeof(sb->s_last_mounted));
ext2fs_mark_super_dirty(fs);
}
if (mntopts_cmd)
update_mntopts(fs, mntopts_cmd);
if (features_cmd)
update_feature_set(fs, features_cmd);
if (extended_cmd)
parse_extended_opts(fs, extended_cmd);
if (journal_size || journal_device)
add_journal(fs);
if (U_flag) {
if ((strcasecmp(new_UUID, "null") == 0) ||
(strcasecmp(new_UUID, "clear") == 0)) {
uuid_clear(sb->s_uuid);
} else if (strcasecmp(new_UUID, "time") == 0) {
uuid_generate_time(sb->s_uuid);
} else if (strcasecmp(new_UUID, "random") == 0) {
uuid_generate(sb->s_uuid);
} else if (uuid_parse(new_UUID, sb->s_uuid)) {
com_err(program_name, 0, _("Invalid UUID format\n"));
exit(1);
}
ext2fs_mark_super_dirty(fs);
}
if (I_flag) {
if (mount_flags & EXT2_MF_MOUNTED) {
fputs(_("The inode size may only be "
"changed when the filesystem is "
"unmounted.\n"), stderr);
exit(1);
}
/*
* We want to update group descriptor also
* with the new free inode count
*/
fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
if (resize_inode(fs, new_inode_size)) {
fputs(_("Error in resizing the inode size.\n"
"Run undoe2fs to undo the "
"file system changes. \n"), stderr);
} else {
printf (_("Setting inode size %lu\n"),
new_inode_size);
}
}
if (l_flag)
list_super (sb);
if (stride_set) {
sb->s_raid_stride = stride;
ext2fs_mark_super_dirty(fs);
printf(_("Setting stride size to %d\n"), stride);
}
if (stripe_width_set) {
sb->s_raid_stripe_width = stripe_width;
ext2fs_mark_super_dirty(fs);
printf(_("Setting stripe width to %d\n"), stripe_width);
}
remove_error_table(&et_ext2_error_table);
return (ext2fs_close (fs) ? 1 : 0);
}
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