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714 lines
19 KiB
C
714 lines
19 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* tune2fs.c - Change the file system parameters on an ext2 file system
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*
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* Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
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* Laboratoire MASI, Institut Blaise Pascal
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* Universite Pierre et Marie Curie (Paris VI)
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*
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* Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Public
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* License.
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* %End-Header%
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*/
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/*
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* History:
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* 93/06/01 - Creation
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* 93/10/31 - Added the -c option to change the maximal mount counts
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* 93/12/14 - Added -l flag to list contents of superblock
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* M.J.E. Mol (marcel@duteca.et.tudelft.nl)
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* F.W. ten Wolde (franky@duteca.et.tudelft.nl)
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* 93/12/29 - Added the -e option to change errors behavior
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* 94/02/27 - Ported to use the ext2fs library
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* 94/03/06 - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
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*/
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#include <sys/types.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <getopt.h>
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#include "e2fsbb.h"
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#include "ext2fs/ext2_fs.h"
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#include "ext2fs/ext2fs.h"
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#include "uuid/uuid.h"
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#include "e2p/e2p.h"
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#include "ext2fs/kernel-jbd.h"
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#include "util.h"
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#include "blkid/blkid.h"
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#include "libbb.h"
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static char * device_name = NULL;
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static char * new_label, *new_last_mounted, *new_UUID;
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static char * io_options;
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static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
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static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
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static time_t last_check_time;
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static int print_label;
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static int max_mount_count, mount_count, mount_flags;
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static unsigned long interval, reserved_blocks;
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static unsigned reserved_ratio;
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static unsigned long resgid, resuid;
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static unsigned short errors;
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static int open_flag;
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static char *features_cmd;
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static char *mntopts_cmd;
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static int journal_size, journal_flags;
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static char *journal_device = NULL;
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static const char *please_fsck = "Please run e2fsck on the filesystem\n";
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static __u32 ok_features[3] = {
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EXT3_FEATURE_COMPAT_HAS_JOURNAL | EXT2_FEATURE_COMPAT_DIR_INDEX,
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EXT2_FEATURE_INCOMPAT_FILETYPE,
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EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
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};
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/*
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* Remove an external journal from the filesystem
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*/
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static void remove_journal_device(ext2_filsys fs)
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{
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char *journal_path;
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ext2_filsys jfs;
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char buf[1024];
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journal_superblock_t *jsb;
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int i, nr_users;
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errcode_t retval;
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int commit_remove_journal = 0;
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io_manager io_ptr;
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if (f_flag)
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commit_remove_journal = 1; /* force removal even if error */
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uuid_unparse(fs->super->s_journal_uuid, buf);
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journal_path = blkid_get_devname(NULL, "UUID", buf);
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if (!journal_path) {
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journal_path =
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ext2fs_find_block_device(fs->super->s_journal_dev);
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if (!journal_path)
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return;
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}
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io_ptr = unix_io_manager;
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retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
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EXT2_FLAG_JOURNAL_DEV_OK, 0,
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fs->blocksize, io_ptr, &jfs);
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if (retval) {
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bb_error_msg("Failed to open external journal");
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goto no_valid_journal;
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}
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if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
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bb_error_msg("%s is not a journal device", journal_path);
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goto no_valid_journal;
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}
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/* Get the journal superblock */
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if ((retval = io_channel_read_blk(jfs->io, 1, -1024, buf))) {
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bb_error_msg("Failed to read journal superblock");
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goto no_valid_journal;
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}
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jsb = (journal_superblock_t *) buf;
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if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
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(jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
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bb_error_msg("Journal superblock not found!");
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goto no_valid_journal;
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}
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/* Find the filesystem UUID */
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nr_users = ntohl(jsb->s_nr_users);
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for (i=0; i < nr_users; i++) {
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if (memcmp(fs->super->s_uuid,
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&jsb->s_users[i*16], 16) == 0)
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break;
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}
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if (i >= nr_users) {
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bb_error_msg("Filesystem's UUID not found on journal device");
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commit_remove_journal = 1;
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goto no_valid_journal;
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}
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nr_users--;
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for (i=0; i < nr_users; i++)
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memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16);
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jsb->s_nr_users = htonl(nr_users);
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/* Write back the journal superblock */
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if ((retval = io_channel_write_blk(jfs->io, 1, -1024, buf))) {
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bb_error_msg("Failed to write journal superblock");
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goto no_valid_journal;
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}
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commit_remove_journal = 1;
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no_valid_journal:
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if (commit_remove_journal == 0)
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bb_error_msg_and_die("Journal NOT removed");
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fs->super->s_journal_dev = 0;
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uuid_clear(fs->super->s_journal_uuid);
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ext2fs_mark_super_dirty(fs);
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puts("Journal removed");
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free(journal_path);
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}
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/* Helper function for remove_journal_inode */
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static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
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int blockcnt EXT2FS_ATTR((unused)),
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void *private EXT2FS_ATTR((unused)))
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{
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blk_t block;
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int group;
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block = *blocknr;
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ext2fs_unmark_block_bitmap(fs->block_map,block);
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group = ext2fs_group_of_blk(fs, block);
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fs->group_desc[group].bg_free_blocks_count++;
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fs->super->s_free_blocks_count++;
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return 0;
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}
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/*
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* Remove the journal inode from the filesystem
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*/
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static void remove_journal_inode(ext2_filsys fs)
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{
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struct ext2_inode inode;
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errcode_t retval;
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ino_t ino = fs->super->s_journal_inum;
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char *msg = "to read";
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char *s = "journal inode";
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retval = ext2fs_read_inode(fs, ino, &inode);
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if (retval)
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goto REMOVE_JOURNAL_INODE_ERROR;
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if (ino == EXT2_JOURNAL_INO) {
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retval = ext2fs_read_bitmaps(fs);
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if (retval) {
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msg = "to read bitmaps";
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s = "";
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goto REMOVE_JOURNAL_INODE_ERROR;
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}
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retval = ext2fs_block_iterate(fs, ino, 0, NULL,
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release_blocks_proc, NULL);
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if (retval) {
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msg = "clearing";
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goto REMOVE_JOURNAL_INODE_ERROR;
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}
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memset(&inode, 0, sizeof(inode));
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ext2fs_mark_bb_dirty(fs);
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fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
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} else
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inode.i_flags &= ~EXT2_IMMUTABLE_FL;
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retval = ext2fs_write_inode(fs, ino, &inode);
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if (retval) {
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msg = "writing";
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REMOVE_JOURNAL_INODE_ERROR:
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bb_error_msg_and_die("Failed %s %s", msg, s);
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}
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fs->super->s_journal_inum = 0;
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ext2fs_mark_super_dirty(fs);
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}
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/*
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* Update the default mount options
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*/
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static void update_mntopts(ext2_filsys fs, char *mntopts)
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{
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struct ext2_super_block *sb= fs->super;
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if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0))
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bb_error_msg_and_die("Invalid mount option set: %s", mntopts);
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ext2fs_mark_super_dirty(fs);
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}
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/*
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* Update the feature set as provided by the user.
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*/
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static void update_feature_set(ext2_filsys fs, char *features)
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{
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int sparse, old_sparse, filetype, old_filetype;
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int journal, old_journal, dxdir, old_dxdir;
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struct ext2_super_block *sb= fs->super;
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__u32 old_compat, old_incompat, old_ro_compat;
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old_compat = sb->s_feature_compat;
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old_ro_compat = sb->s_feature_ro_compat;
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old_incompat = sb->s_feature_incompat;
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old_sparse = sb->s_feature_ro_compat &
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EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
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old_filetype = sb->s_feature_incompat &
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EXT2_FEATURE_INCOMPAT_FILETYPE;
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old_journal = sb->s_feature_compat &
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EXT3_FEATURE_COMPAT_HAS_JOURNAL;
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old_dxdir = sb->s_feature_compat &
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EXT2_FEATURE_COMPAT_DIR_INDEX;
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if (e2p_edit_feature(features, &sb->s_feature_compat, ok_features))
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bb_error_msg_and_die("Invalid filesystem option set: %s", features);
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sparse = sb->s_feature_ro_compat &
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EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
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filetype = sb->s_feature_incompat &
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EXT2_FEATURE_INCOMPAT_FILETYPE;
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journal = sb->s_feature_compat &
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EXT3_FEATURE_COMPAT_HAS_JOURNAL;
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dxdir = sb->s_feature_compat &
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EXT2_FEATURE_COMPAT_DIR_INDEX;
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if (old_journal && !journal) {
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if ((mount_flags & EXT2_MF_MOUNTED) &&
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!(mount_flags & EXT2_MF_READONLY)) {
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bb_error_msg_and_die(
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"The has_journal flag may only be "
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"cleared when the filesystem is\n"
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"unmounted or mounted "
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"read-only");
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}
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if (sb->s_feature_incompat &
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EXT3_FEATURE_INCOMPAT_RECOVER) {
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bb_error_msg_and_die(
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"The needs_recovery flag is set. "
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"%s before clearing the has_journal flag.",
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please_fsck);
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}
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if (sb->s_journal_inum) {
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remove_journal_inode(fs);
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}
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if (sb->s_journal_dev) {
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remove_journal_device(fs);
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}
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}
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if (journal && !old_journal) {
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/*
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* If adding a journal flag, let the create journal
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* code below handle creating setting the flag and
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* creating the journal. We supply a default size if
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* necessary.
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*/
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if (!journal_size)
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journal_size = -1;
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sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
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}
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if (dxdir && !old_dxdir) {
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if (!sb->s_def_hash_version)
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sb->s_def_hash_version = EXT2_HASH_TEA;
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if (uuid_is_null((unsigned char *) sb->s_hash_seed))
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uuid_generate((unsigned char *) sb->s_hash_seed);
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}
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if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
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(sb->s_feature_compat || sb->s_feature_ro_compat ||
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sb->s_feature_incompat))
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ext2fs_update_dynamic_rev(fs);
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if ((sparse != old_sparse) ||
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(filetype != old_filetype)) {
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sb->s_state &= ~EXT2_VALID_FS;
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printf("\n%s\n", please_fsck);
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}
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if ((old_compat != sb->s_feature_compat) ||
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(old_ro_compat != sb->s_feature_ro_compat) ||
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(old_incompat != sb->s_feature_incompat))
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ext2fs_mark_super_dirty(fs);
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}
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/*
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* Add a journal to the filesystem.
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*/
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static void add_journal(ext2_filsys fs)
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{
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if (fs->super->s_feature_compat &
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EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
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bb_error_msg_and_die("The filesystem already has a journal");
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}
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if (journal_device) {
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make_journal_device(journal_device, fs, 0, 0);
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} else if (journal_size) {
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make_journal_blocks(fs, journal_size, journal_flags, 0);
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/*
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* If the filesystem wasn't mounted, we need to force
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* the block group descriptors out.
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*/
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if ((mount_flags & EXT2_MF_MOUNTED) == 0)
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fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
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}
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print_check_message(fs);
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}
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/*
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* Busybox stuff
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*/
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static char * x_blkid_get_devname(const char *token)
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{
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char * dev_name;
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if (!(dev_name = blkid_get_devname(NULL, token, NULL)))
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bb_error_msg_and_die("Unable to resolve '%s'", token);
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return dev_name;
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}
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#ifdef CONFIG_E2LABEL
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static void parse_e2label_options(int argc, char ** argv)
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{
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if ((argc < 2) || (argc > 3))
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bb_show_usage();
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io_options = strchr(argv[1], '?');
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if (io_options)
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*io_options++ = 0;
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device_name = x_blkid_get_devname(argv[1]);
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if (argc == 3) {
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open_flag = EXT2_FLAG_RW | EXT2_FLAG_JOURNAL_DEV_OK;
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L_flag = 1;
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new_label = argv[2];
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} else
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print_label++;
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}
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#else
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#define parse_e2label_options(x,y)
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#endif
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static time_t parse_time(char *str)
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{
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struct tm ts;
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if (strcmp(str, "now") == 0) {
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return time(0);
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}
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memset(&ts, 0, sizeof(ts));
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#ifdef HAVE_STRPTIME
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strptime(str, "%Y%m%d%H%M%S", &ts);
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#else
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sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
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&ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
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ts.tm_year -= 1900;
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ts.tm_mon -= 1;
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if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
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ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
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ts.tm_min > 59 || ts.tm_sec > 61)
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ts.tm_mday = 0;
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#endif
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if (ts.tm_mday == 0) {
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bb_error_msg_and_die("Cannot parse date/time specifier: %s", str);
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}
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return mktime(&ts);
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}
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static void parse_tune2fs_options(int argc, char **argv)
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{
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int c;
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char * tmp;
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printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
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while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:J:L:M:O:T:U:")) != EOF)
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switch (c)
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{
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case 'c':
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max_mount_count = xatou_range(optarg, 0, 16000);
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if (max_mount_count == 0)
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max_mount_count = -1;
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c_flag = 1;
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open_flag = EXT2_FLAG_RW;
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break;
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case 'C':
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mount_count = xatou_range(optarg, 0, 16000);
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C_flag = 1;
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open_flag = EXT2_FLAG_RW;
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break;
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case 'e':
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if (strcmp (optarg, "continue") == 0)
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errors = EXT2_ERRORS_CONTINUE;
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else if (strcmp (optarg, "remount-ro") == 0)
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errors = EXT2_ERRORS_RO;
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else if (strcmp (optarg, "panic") == 0)
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errors = EXT2_ERRORS_PANIC;
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else {
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bb_error_msg_and_die("bad error behavior - %s", optarg);
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}
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e_flag = 1;
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open_flag = EXT2_FLAG_RW;
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break;
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case 'f': /* Force */
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f_flag = 1;
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break;
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case 'g':
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resgid = bb_strtoul(optarg, NULL, 10);
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if (errno)
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resgid = xgroup2gid(optarg);
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g_flag = 1;
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open_flag = EXT2_FLAG_RW;
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break;
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case 'i':
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interval = strtoul(optarg, &tmp, 0);
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switch (*tmp) {
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case 's':
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tmp++;
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break;
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case '\0':
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case 'd':
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case 'D': /* days */
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interval *= 86400;
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if (*tmp != '\0')
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tmp++;
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break;
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case 'm':
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case 'M': /* months! */
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interval *= 86400 * 30;
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tmp++;
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break;
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case 'w':
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case 'W': /* weeks */
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interval *= 86400 * 7;
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tmp++;
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break;
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}
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if (*tmp || interval > (365 * 86400)) {
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bb_error_msg_and_die("bad interval - %s", optarg);
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}
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i_flag = 1;
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open_flag = EXT2_FLAG_RW;
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break;
|
|
case 'j':
|
|
if (!journal_size)
|
|
journal_size = -1;
|
|
open_flag = EXT2_FLAG_RW;
|
|
break;
|
|
case 'J':
|
|
parse_journal_opts(&journal_device, &journal_flags, &journal_size, 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 = xatou_range(optarg, 0, 50);
|
|
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) {
|
|
bb_error_msg_and_die("-o may only be specified once");
|
|
}
|
|
mntopts_cmd = optarg;
|
|
open_flag = EXT2_FLAG_RW;
|
|
break;
|
|
|
|
case 'O':
|
|
if (features_cmd) {
|
|
bb_error_msg_and_die("-O may only be specified once");
|
|
}
|
|
features_cmd = optarg;
|
|
open_flag = EXT2_FLAG_RW;
|
|
break;
|
|
case 'r':
|
|
reserved_blocks = xatoul(optarg);
|
|
r_flag = 1;
|
|
open_flag = EXT2_FLAG_RW;
|
|
break;
|
|
case 's':
|
|
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 = bb_strtoul(optarg, NULL, 10);
|
|
if (errno)
|
|
resuid = xuname2uid(optarg);
|
|
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;
|
|
default:
|
|
bb_show_usage();
|
|
}
|
|
if (optind < argc - 1 || optind == argc)
|
|
bb_show_usage();
|
|
if (!open_flag && !l_flag)
|
|
bb_show_usage();
|
|
io_options = strchr(argv[optind], '?');
|
|
if (io_options)
|
|
*io_options++ = 0;
|
|
device_name = x_blkid_get_devname(argv[optind]);
|
|
}
|
|
|
|
static void tune2fs_clean_up(void)
|
|
{
|
|
if (ENABLE_FEATURE_CLEAN_UP && device_name) free(device_name);
|
|
if (ENABLE_FEATURE_CLEAN_UP && journal_device) free(journal_device);
|
|
}
|
|
|
|
int tune2fs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int tune2fs_main(int argc, char **argv)
|
|
{
|
|
errcode_t retval;
|
|
ext2_filsys fs;
|
|
struct ext2_super_block *sb;
|
|
io_manager io_ptr;
|
|
|
|
if (ENABLE_FEATURE_CLEAN_UP)
|
|
atexit(tune2fs_clean_up);
|
|
|
|
if (ENABLE_E2LABEL && (applet_name[0] == 'e')) /* e2label */
|
|
parse_e2label_options(argc, argv);
|
|
else
|
|
parse_tune2fs_options(argc, argv); /* tune2fs */
|
|
|
|
io_ptr = unix_io_manager;
|
|
retval = ext2fs_open2(device_name, io_options, open_flag,
|
|
0, 0, io_ptr, &fs);
|
|
if (retval)
|
|
bb_error_msg_and_die("No valid superblock on %s", device_name);
|
|
sb = fs->super;
|
|
if (print_label) {
|
|
/* For e2label emulation */
|
|
printf("%.*s\n", (int) sizeof(sb->s_volume_name),
|
|
sb->s_volume_name);
|
|
return 0;
|
|
}
|
|
retval = ext2fs_check_if_mounted(device_name, &mount_flags);
|
|
if (retval)
|
|
bb_error_msg_and_die("cannot determine if %s is mounted", device_name);
|
|
/* 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 check %lu seconds\n", interval);
|
|
}
|
|
if (m_flag) {
|
|
sb->s_r_blocks_count = (sb->s_blocks_count / 100)
|
|
* reserved_ratio;
|
|
ext2fs_mark_super_dirty(fs);
|
|
printf("Setting reserved blocks percentage to %u (%u blocks)\n",
|
|
reserved_ratio, sb->s_r_blocks_count);
|
|
}
|
|
if (r_flag) {
|
|
if (reserved_blocks >= sb->s_blocks_count/2)
|
|
bb_error_msg_and_die("reserved blocks count is too big (%lu)", reserved_blocks);
|
|
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)
|
|
bb_error_msg("\nThe filesystem already has sparse superblocks");
|
|
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) {
|
|
if (!(sb->s_feature_ro_compat &
|
|
EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER))
|
|
bb_error_msg("\nThe filesystem already has sparse superblocks disabled");
|
|
else {
|
|
sb->s_feature_ro_compat &=
|
|
~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
|
|
sb->s_state &= ~EXT2_VALID_FS;
|
|
fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
|
|
ext2fs_mark_super_dirty(fs);
|
|
printf("\nSparse superblock flag cleared. %s", please_fsck);
|
|
}
|
|
}
|
|
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))
|
|
bb_error_msg("Warning: label too long, truncating");
|
|
memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
|
|
safe_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));
|
|
safe_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 (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)) {
|
|
bb_error_msg_and_die("Invalid UUID format");
|
|
}
|
|
ext2fs_mark_super_dirty(fs);
|
|
}
|
|
|
|
if (l_flag)
|
|
list_super (sb);
|
|
return (ext2fs_close (fs) ? 1 : 0);
|
|
}
|