[821] | 1 | /*
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| 2 | * tune2fs.c - Change the file system parameters on an ext2 file system
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| 3 | *
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| 4 | * Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
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| 5 | * Laboratoire MASI, Institut Blaise Pascal
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| 6 | * Universite Pierre et Marie Curie (Paris VI)
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| 7 | *
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| 8 | * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
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| 9 | *
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| 10 | * %Begin-Header%
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| 11 | * This file may be redistributed under the terms of the GNU Public
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| 12 | * License.
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| 13 | * %End-Header%
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| 14 | */
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| 15 |
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| 16 | /*
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| 17 | * History:
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| 18 | * 93/06/01 - Creation
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| 19 | * 93/10/31 - Added the -c option to change the maximal mount counts
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| 20 | * 93/12/14 - Added -l flag to list contents of superblock
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| 21 | * M.J.E. Mol (marcel@duteca.et.tudelft.nl)
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| 22 | * F.W. ten Wolde (franky@duteca.et.tudelft.nl)
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| 23 | * 93/12/29 - Added the -e option to change errors behavior
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| 24 | * 94/02/27 - Ported to use the ext2fs library
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| 25 | * 94/03/06 - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
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| 26 | */
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| 27 |
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| 28 | #include <sys/types.h>
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| 29 | #include <fcntl.h>
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| 30 | #include <stdio.h>
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| 31 | #include <stdlib.h>
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| 32 | #include <string.h>
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| 33 | #include <time.h>
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| 34 | #include <unistd.h>
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| 35 | #include <getopt.h>
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| 36 |
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| 37 | #include "e2fsbb.h"
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| 38 | #include "ext2fs/ext2_fs.h"
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| 39 | #include "ext2fs/ext2fs.h"
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| 40 | #include "uuid/uuid.h"
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| 41 | #include "e2p/e2p.h"
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| 42 | #include "ext2fs/kernel-jbd.h"
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| 43 | #include "util.h"
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| 44 | #include "blkid/blkid.h"
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| 45 |
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| 46 | #include "busybox.h"
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| 47 | #include "grp_.h"
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| 48 | #include "pwd_.h"
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| 49 |
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| 50 | static char * device_name = NULL;
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| 51 | static char * new_label, *new_last_mounted, *new_UUID;
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| 52 | static char * io_options;
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| 53 | static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
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| 54 | static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
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| 55 | static time_t last_check_time;
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| 56 | static int print_label;
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| 57 | static int max_mount_count, mount_count, mount_flags;
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| 58 | static unsigned long interval, reserved_ratio, reserved_blocks;
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| 59 | static unsigned long resgid, resuid;
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| 60 | static unsigned short errors;
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| 61 | static int open_flag;
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| 62 | static char *features_cmd;
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| 63 | static char *mntopts_cmd;
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| 64 |
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| 65 | static int journal_size, journal_flags;
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| 66 | static char *journal_device = NULL;
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| 67 |
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| 68 | static const char *please_fsck = "Please run e2fsck on the filesystem\n";
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| 69 |
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| 70 | static __u32 ok_features[3] = {
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| 71 | EXT3_FEATURE_COMPAT_HAS_JOURNAL | EXT2_FEATURE_COMPAT_DIR_INDEX,
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| 72 | EXT2_FEATURE_INCOMPAT_FILETYPE,
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| 73 | EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
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| 74 | };
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| 75 |
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| 76 | /*
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| 77 | * Remove an external journal from the filesystem
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| 78 | */
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| 79 | static void remove_journal_device(ext2_filsys fs)
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| 80 | {
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| 81 | char *journal_path;
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| 82 | ext2_filsys jfs;
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| 83 | char buf[1024];
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| 84 | journal_superblock_t *jsb;
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| 85 | int i, nr_users;
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| 86 | errcode_t retval;
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| 87 | int commit_remove_journal = 0;
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| 88 | io_manager io_ptr;
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| 89 |
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| 90 | if (f_flag)
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| 91 | commit_remove_journal = 1; /* force removal even if error */
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| 92 |
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| 93 | uuid_unparse(fs->super->s_journal_uuid, buf);
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| 94 | journal_path = blkid_get_devname(NULL, "UUID", buf);
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| 95 |
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| 96 | if (!journal_path) {
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| 97 | journal_path =
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| 98 | ext2fs_find_block_device(fs->super->s_journal_dev);
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| 99 | if (!journal_path)
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| 100 | return;
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| 101 | }
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| 102 |
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| 103 | io_ptr = unix_io_manager;
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| 104 | retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
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| 105 | EXT2_FLAG_JOURNAL_DEV_OK, 0,
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| 106 | fs->blocksize, io_ptr, &jfs);
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| 107 | if (retval) {
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| 108 | bb_error_msg("Failed to open external journal");
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| 109 | goto no_valid_journal;
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| 110 | }
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| 111 | if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
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| 112 | bb_error_msg("%s is not a journal device", journal_path);
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| 113 | goto no_valid_journal;
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| 114 | }
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| 115 |
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| 116 | /* Get the journal superblock */
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| 117 | if ((retval = io_channel_read_blk(jfs->io, 1, -1024, buf))) {
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| 118 | bb_error_msg("Failed to read journal superblock");
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| 119 | goto no_valid_journal;
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| 120 | }
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| 121 |
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| 122 | jsb = (journal_superblock_t *) buf;
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| 123 | if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
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| 124 | (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
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| 125 | bb_error_msg("Journal superblock not found!");
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| 126 | goto no_valid_journal;
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| 127 | }
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| 128 |
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| 129 | /* Find the filesystem UUID */
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| 130 | nr_users = ntohl(jsb->s_nr_users);
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| 131 | for (i=0; i < nr_users; i++) {
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| 132 | if (memcmp(fs->super->s_uuid,
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| 133 | &jsb->s_users[i*16], 16) == 0)
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| 134 | break;
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| 135 | }
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| 136 | if (i >= nr_users) {
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| 137 | bb_error_msg("Filesystem's UUID not found on journal device");
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| 138 | commit_remove_journal = 1;
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| 139 | goto no_valid_journal;
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| 140 | }
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| 141 | nr_users--;
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| 142 | for (i=0; i < nr_users; i++)
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| 143 | memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16);
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| 144 | jsb->s_nr_users = htonl(nr_users);
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| 145 |
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| 146 | /* Write back the journal superblock */
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| 147 | if ((retval = io_channel_write_blk(jfs->io, 1, -1024, buf))) {
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| 148 | bb_error_msg("Failed to write journal superblock");
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| 149 | goto no_valid_journal;
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| 150 | }
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| 151 |
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| 152 | commit_remove_journal = 1;
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| 153 |
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| 154 | no_valid_journal:
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| 155 | if (commit_remove_journal == 0)
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| 156 | bb_error_msg_and_die("Journal NOT removed");
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| 157 | fs->super->s_journal_dev = 0;
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| 158 | uuid_clear(fs->super->s_journal_uuid);
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| 159 | ext2fs_mark_super_dirty(fs);
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| 160 | puts("Journal removed");
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| 161 | free(journal_path);
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| 162 | }
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| 163 |
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| 164 | /* Helper function for remove_journal_inode */
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| 165 | static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
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| 166 | int blockcnt EXT2FS_ATTR((unused)),
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| 167 | void *private EXT2FS_ATTR((unused)))
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| 168 | {
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| 169 | blk_t block;
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| 170 | int group;
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| 171 |
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| 172 | block = *blocknr;
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| 173 | ext2fs_unmark_block_bitmap(fs->block_map,block);
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| 174 | group = ext2fs_group_of_blk(fs, block);
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| 175 | fs->group_desc[group].bg_free_blocks_count++;
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| 176 | fs->super->s_free_blocks_count++;
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| 177 | return 0;
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| 178 | }
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| 179 |
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| 180 | /*
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| 181 | * Remove the journal inode from the filesystem
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| 182 | */
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| 183 | static void remove_journal_inode(ext2_filsys fs)
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| 184 | {
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| 185 | struct ext2_inode inode;
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| 186 | errcode_t retval;
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| 187 | ino_t ino = fs->super->s_journal_inum;
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| 188 | char *msg = "to read";
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| 189 | char *s = "journal inode";
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| 190 |
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| 191 | retval = ext2fs_read_inode(fs, ino, &inode);
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| 192 | if (retval)
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| 193 | goto REMOVE_JOURNAL_INODE_ERROR;
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| 194 | if (ino == EXT2_JOURNAL_INO) {
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| 195 | retval = ext2fs_read_bitmaps(fs);
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| 196 | if (retval) {
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| 197 | msg = "to read bitmaps";
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| 198 | s = "";
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| 199 | goto REMOVE_JOURNAL_INODE_ERROR;
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| 200 | }
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| 201 | retval = ext2fs_block_iterate(fs, ino, 0, NULL,
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| 202 | release_blocks_proc, NULL);
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| 203 | if (retval) {
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| 204 | msg = "clearing";
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| 205 | goto REMOVE_JOURNAL_INODE_ERROR;
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| 206 | }
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| 207 | memset(&inode, 0, sizeof(inode));
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| 208 | ext2fs_mark_bb_dirty(fs);
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| 209 | fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
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| 210 | } else
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| 211 | inode.i_flags &= ~EXT2_IMMUTABLE_FL;
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| 212 | retval = ext2fs_write_inode(fs, ino, &inode);
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| 213 | if (retval) {
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| 214 | msg = "writing";
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| 215 | REMOVE_JOURNAL_INODE_ERROR:
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| 216 | bb_error_msg_and_die("Failed %s %s", msg, s);
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| 217 | }
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| 218 | fs->super->s_journal_inum = 0;
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| 219 | ext2fs_mark_super_dirty(fs);
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| 220 | }
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| 221 |
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| 222 | /*
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| 223 | * Update the default mount options
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| 224 | */
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| 225 | static void update_mntopts(ext2_filsys fs, char *mntopts)
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| 226 | {
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| 227 | struct ext2_super_block *sb= fs->super;
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| 228 |
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| 229 | if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0))
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| 230 | bb_error_msg_and_die("Invalid mount option set: %s", mntopts);
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| 231 | ext2fs_mark_super_dirty(fs);
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| 232 | }
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| 233 |
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| 234 | /*
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| 235 | * Update the feature set as provided by the user.
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| 236 | */
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| 237 | static void update_feature_set(ext2_filsys fs, char *features)
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| 238 | {
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| 239 | int sparse, old_sparse, filetype, old_filetype;
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| 240 | int journal, old_journal, dxdir, old_dxdir;
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| 241 | struct ext2_super_block *sb= fs->super;
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| 242 | __u32 old_compat, old_incompat, old_ro_compat;
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| 243 |
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| 244 | old_compat = sb->s_feature_compat;
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| 245 | old_ro_compat = sb->s_feature_ro_compat;
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| 246 | old_incompat = sb->s_feature_incompat;
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| 247 |
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| 248 | old_sparse = sb->s_feature_ro_compat &
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| 249 | EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
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| 250 | old_filetype = sb->s_feature_incompat &
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| 251 | EXT2_FEATURE_INCOMPAT_FILETYPE;
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| 252 | old_journal = sb->s_feature_compat &
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| 253 | EXT3_FEATURE_COMPAT_HAS_JOURNAL;
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| 254 | old_dxdir = sb->s_feature_compat &
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| 255 | EXT2_FEATURE_COMPAT_DIR_INDEX;
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| 256 | if (e2p_edit_feature(features, &sb->s_feature_compat, ok_features))
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| 257 | bb_error_msg_and_die("Invalid filesystem option set: %s", features);
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| 258 | sparse = sb->s_feature_ro_compat &
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| 259 | EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
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| 260 | filetype = sb->s_feature_incompat &
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| 261 | EXT2_FEATURE_INCOMPAT_FILETYPE;
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| 262 | journal = sb->s_feature_compat &
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| 263 | EXT3_FEATURE_COMPAT_HAS_JOURNAL;
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| 264 | dxdir = sb->s_feature_compat &
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| 265 | EXT2_FEATURE_COMPAT_DIR_INDEX;
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| 266 | if (old_journal && !journal) {
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| 267 | if ((mount_flags & EXT2_MF_MOUNTED) &&
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| 268 | !(mount_flags & EXT2_MF_READONLY)) {
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| 269 | bb_error_msg_and_die(
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| 270 | "The has_journal flag may only be "
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| 271 | "cleared when the filesystem is\n"
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| 272 | "unmounted or mounted "
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| 273 | "read-only");
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| 274 | }
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| 275 | if (sb->s_feature_incompat &
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| 276 | EXT3_FEATURE_INCOMPAT_RECOVER) {
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| 277 | bb_error_msg_and_die(
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| 278 | "The needs_recovery flag is set. "
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| 279 | "%s before clearing the has_journal flag.",
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| 280 | please_fsck);
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| 281 | }
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| 282 | if (sb->s_journal_inum) {
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| 283 | remove_journal_inode(fs);
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| 284 | }
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| 285 | if (sb->s_journal_dev) {
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| 286 | remove_journal_device(fs);
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| 287 | }
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| 288 | }
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| 289 | if (journal && !old_journal) {
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| 290 | /*
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| 291 | * If adding a journal flag, let the create journal
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| 292 | * code below handle creating setting the flag and
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| 293 | * creating the journal. We supply a default size if
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| 294 | * necessary.
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| 295 | */
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| 296 | if (!journal_size)
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| 297 | journal_size = -1;
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| 298 | sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
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| 299 | }
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| 300 | if (dxdir && !old_dxdir) {
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| 301 | if (!sb->s_def_hash_version)
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| 302 | sb->s_def_hash_version = EXT2_HASH_TEA;
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| 303 | if (uuid_is_null((unsigned char *) sb->s_hash_seed))
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| 304 | uuid_generate((unsigned char *) sb->s_hash_seed);
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| 305 | }
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| 306 |
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| 307 | if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
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| 308 | (sb->s_feature_compat || sb->s_feature_ro_compat ||
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| 309 | sb->s_feature_incompat))
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| 310 | ext2fs_update_dynamic_rev(fs);
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| 311 | if ((sparse != old_sparse) ||
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| 312 | (filetype != old_filetype)) {
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| 313 | sb->s_state &= ~EXT2_VALID_FS;
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| 314 | printf("\n%s\n", please_fsck);
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| 315 | }
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| 316 | if ((old_compat != sb->s_feature_compat) ||
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| 317 | (old_ro_compat != sb->s_feature_ro_compat) ||
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| 318 | (old_incompat != sb->s_feature_incompat))
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| 319 | ext2fs_mark_super_dirty(fs);
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| 320 | }
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| 321 |
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| 322 | /*
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| 323 | * Add a journal to the filesystem.
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| 324 | */
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| 325 | static void add_journal(ext2_filsys fs)
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| 326 | {
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| 327 | if (fs->super->s_feature_compat &
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| 328 | EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
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| 329 | bb_error_msg_and_die("The filesystem already has a journal");
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| 330 | }
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| 331 | if (journal_device) {
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| 332 | make_journal_device(journal_device, fs, 0, 0);
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| 333 | } else if (journal_size) {
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| 334 | make_journal_blocks(fs, journal_size, journal_flags, 0);
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| 335 | /*
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| 336 | * If the filesystem wasn't mounted, we need to force
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| 337 | * the block group descriptors out.
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| 338 | */
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| 339 | if ((mount_flags & EXT2_MF_MOUNTED) == 0)
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| 340 | fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
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| 341 | }
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| 342 | print_check_message(fs);
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| 343 | return;
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| 344 | }
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| 345 |
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| 346 | /*
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| 347 | * Busybox stuff
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| 348 | */
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| 349 | static char * x_blkid_get_devname(const char *token)
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| 350 | {
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| 351 | char * dev_name;
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| 352 |
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| 353 | if (!(dev_name = blkid_get_devname(NULL, token, NULL)))
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| 354 | bb_error_msg_and_die("Unable to resolve '%s'", token);
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| 355 | return dev_name;
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| 356 | }
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| 357 |
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| 358 | #ifdef CONFIG_E2LABEL
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| 359 | static void parse_e2label_options(int argc, char ** argv)
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| 360 | {
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| 361 | if ((argc < 2) || (argc > 3))
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| 362 | bb_show_usage();
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| 363 | io_options = strchr(argv[1], '?');
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| 364 | if (io_options)
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| 365 | *io_options++ = 0;
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| 366 | device_name = x_blkid_get_devname(argv[1]);
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| 367 | if (argc == 3) {
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| 368 | open_flag = EXT2_FLAG_RW | EXT2_FLAG_JOURNAL_DEV_OK;
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| 369 | L_flag = 1;
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| 370 | new_label = argv[2];
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| 371 | } else
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| 372 | print_label++;
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| 373 | }
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| 374 | #else
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| 375 | #define parse_e2label_options(x,y)
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| 376 | #endif
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| 377 |
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| 378 | static time_t parse_time(char *str)
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| 379 | {
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| 380 | struct tm ts;
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| 381 |
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| 382 | if (strcmp(str, "now") == 0) {
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| 383 | return (time(0));
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| 384 | }
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| 385 | memset(&ts, 0, sizeof(ts));
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| 386 | #ifdef HAVE_STRPTIME
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| 387 | strptime(str, "%Y%m%d%H%M%S", &ts);
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| 388 | #else
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| 389 | sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
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| 390 | &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
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| 391 | ts.tm_year -= 1900;
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| 392 | ts.tm_mon -= 1;
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| 393 | if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
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| 394 | ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
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| 395 | ts.tm_min > 59 || ts.tm_sec > 61)
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| 396 | ts.tm_mday = 0;
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| 397 | #endif
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| 398 | if (ts.tm_mday == 0) {
|
---|
| 399 | bb_error_msg_and_die("Couldn't parse date/time specifier: %s", str);
|
---|
| 400 | }
|
---|
| 401 | return (mktime(&ts));
|
---|
| 402 | }
|
---|
| 403 |
|
---|
| 404 | static void parse_tune2fs_options(int argc, char **argv)
|
---|
| 405 | {
|
---|
| 406 | int c;
|
---|
| 407 | char * tmp;
|
---|
| 408 |
|
---|
| 409 | printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
|
---|
| 410 | while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:J:L:M:O:T:U:")) != EOF)
|
---|
| 411 | switch (c)
|
---|
| 412 | {
|
---|
| 413 | case 'c':
|
---|
| 414 | if (safe_strtoi(optarg, &max_mount_count) || max_mount_count > 16000) {
|
---|
| 415 | goto MOUNTS_COUNT_ERROR;
|
---|
| 416 | }
|
---|
| 417 | if (max_mount_count == 0)
|
---|
| 418 | max_mount_count = -1;
|
---|
| 419 | c_flag = 1;
|
---|
| 420 | open_flag = EXT2_FLAG_RW;
|
---|
| 421 | break;
|
---|
| 422 | case 'C':
|
---|
| 423 | if (safe_strtoi(optarg, &mount_count) || mount_count > 16000) {
|
---|
| 424 | MOUNTS_COUNT_ERROR:
|
---|
| 425 | bb_error_msg_and_die("bad mounts count - %s", optarg);
|
---|
| 426 | }
|
---|
| 427 | C_flag = 1;
|
---|
| 428 | open_flag = EXT2_FLAG_RW;
|
---|
| 429 | break;
|
---|
| 430 | case 'e':
|
---|
| 431 | if (strcmp (optarg, "continue") == 0)
|
---|
| 432 | errors = EXT2_ERRORS_CONTINUE;
|
---|
| 433 | else if (strcmp (optarg, "remount-ro") == 0)
|
---|
| 434 | errors = EXT2_ERRORS_RO;
|
---|
| 435 | else if (strcmp (optarg, "panic") == 0)
|
---|
| 436 | errors = EXT2_ERRORS_PANIC;
|
---|
| 437 | else {
|
---|
| 438 | bb_error_msg_and_die("bad error behavior - %s", optarg);
|
---|
| 439 | }
|
---|
| 440 | e_flag = 1;
|
---|
| 441 | open_flag = EXT2_FLAG_RW;
|
---|
| 442 | break;
|
---|
| 443 | case 'f': /* Force */
|
---|
| 444 | f_flag = 1;
|
---|
| 445 | break;
|
---|
| 446 | case 'g':
|
---|
| 447 | if (safe_strtoul(optarg, &resgid))
|
---|
| 448 | resgid = bb_xgetgrnam(optarg);
|
---|
| 449 | g_flag = 1;
|
---|
| 450 | open_flag = EXT2_FLAG_RW;
|
---|
| 451 | break;
|
---|
| 452 | case 'i':
|
---|
| 453 | interval = strtoul (optarg, &tmp, 0);
|
---|
| 454 | switch (*tmp) {
|
---|
| 455 | case 's':
|
---|
| 456 | tmp++;
|
---|
| 457 | break;
|
---|
| 458 | case '\0':
|
---|
| 459 | case 'd':
|
---|
| 460 | case 'D': /* days */
|
---|
| 461 | interval *= 86400;
|
---|
| 462 | if (*tmp != '\0')
|
---|
| 463 | tmp++;
|
---|
| 464 | break;
|
---|
| 465 | case 'm':
|
---|
| 466 | case 'M': /* months! */
|
---|
| 467 | interval *= 86400 * 30;
|
---|
| 468 | tmp++;
|
---|
| 469 | break;
|
---|
| 470 | case 'w':
|
---|
| 471 | case 'W': /* weeks */
|
---|
| 472 | interval *= 86400 * 7;
|
---|
| 473 | tmp++;
|
---|
| 474 | break;
|
---|
| 475 | }
|
---|
| 476 | if (*tmp || interval > (365 * 86400)) {
|
---|
| 477 | bb_error_msg_and_die("bad interval - %s", optarg);
|
---|
| 478 | }
|
---|
| 479 | i_flag = 1;
|
---|
| 480 | open_flag = EXT2_FLAG_RW;
|
---|
| 481 | break;
|
---|
| 482 | case 'j':
|
---|
| 483 | if (!journal_size)
|
---|
| 484 | journal_size = -1;
|
---|
| 485 | open_flag = EXT2_FLAG_RW;
|
---|
| 486 | break;
|
---|
| 487 | case 'J':
|
---|
| 488 | parse_journal_opts(&journal_device, &journal_flags, &journal_size, optarg);
|
---|
| 489 | open_flag = EXT2_FLAG_RW;
|
---|
| 490 | break;
|
---|
| 491 | case 'l':
|
---|
| 492 | l_flag = 1;
|
---|
| 493 | break;
|
---|
| 494 | case 'L':
|
---|
| 495 | new_label = optarg;
|
---|
| 496 | L_flag = 1;
|
---|
| 497 | open_flag = EXT2_FLAG_RW |
|
---|
| 498 | EXT2_FLAG_JOURNAL_DEV_OK;
|
---|
| 499 | break;
|
---|
| 500 | case 'm':
|
---|
| 501 | if(safe_strtoul(optarg, &reserved_ratio) || reserved_ratio > 50) {
|
---|
| 502 | bb_error_msg_and_die("bad reserved block ratio - %s", optarg);
|
---|
| 503 | }
|
---|
| 504 | m_flag = 1;
|
---|
| 505 | open_flag = EXT2_FLAG_RW;
|
---|
| 506 | break;
|
---|
| 507 | case 'M':
|
---|
| 508 | new_last_mounted = optarg;
|
---|
| 509 | M_flag = 1;
|
---|
| 510 | open_flag = EXT2_FLAG_RW;
|
---|
| 511 | break;
|
---|
| 512 | case 'o':
|
---|
| 513 | if (mntopts_cmd) {
|
---|
| 514 | bb_error_msg_and_die("-o may only be specified once");
|
---|
| 515 | }
|
---|
| 516 | mntopts_cmd = optarg;
|
---|
| 517 | open_flag = EXT2_FLAG_RW;
|
---|
| 518 | break;
|
---|
| 519 |
|
---|
| 520 | case 'O':
|
---|
| 521 | if (features_cmd) {
|
---|
| 522 | bb_error_msg_and_die("-O may only be specified once");
|
---|
| 523 | }
|
---|
| 524 | features_cmd = optarg;
|
---|
| 525 | open_flag = EXT2_FLAG_RW;
|
---|
| 526 | break;
|
---|
| 527 | case 'r':
|
---|
| 528 | if(safe_strtoul(optarg, &reserved_blocks)) {
|
---|
| 529 | bb_error_msg_and_die("bad reserved blocks count - %s", optarg);
|
---|
| 530 | }
|
---|
| 531 | r_flag = 1;
|
---|
| 532 | open_flag = EXT2_FLAG_RW;
|
---|
| 533 | break;
|
---|
| 534 | case 's':
|
---|
| 535 | s_flag = atoi(optarg);
|
---|
| 536 | open_flag = EXT2_FLAG_RW;
|
---|
| 537 | break;
|
---|
| 538 | case 'T':
|
---|
| 539 | T_flag = 1;
|
---|
| 540 | last_check_time = parse_time(optarg);
|
---|
| 541 | open_flag = EXT2_FLAG_RW;
|
---|
| 542 | break;
|
---|
| 543 | case 'u':
|
---|
| 544 | if (safe_strtoul(optarg, &resuid))
|
---|
| 545 | resuid = bb_xgetpwnam(optarg);
|
---|
| 546 | u_flag = 1;
|
---|
| 547 | open_flag = EXT2_FLAG_RW;
|
---|
| 548 | break;
|
---|
| 549 | case 'U':
|
---|
| 550 | new_UUID = optarg;
|
---|
| 551 | U_flag = 1;
|
---|
| 552 | open_flag = EXT2_FLAG_RW |
|
---|
| 553 | EXT2_FLAG_JOURNAL_DEV_OK;
|
---|
| 554 | break;
|
---|
| 555 | default:
|
---|
| 556 | bb_show_usage();
|
---|
| 557 | }
|
---|
| 558 | if (optind < argc - 1 || optind == argc)
|
---|
| 559 | bb_show_usage();
|
---|
| 560 | if (!open_flag && !l_flag)
|
---|
| 561 | bb_show_usage();
|
---|
| 562 | io_options = strchr(argv[optind], '?');
|
---|
| 563 | if (io_options)
|
---|
| 564 | *io_options++ = 0;
|
---|
| 565 | device_name = x_blkid_get_devname(argv[optind]);
|
---|
| 566 | }
|
---|
| 567 |
|
---|
| 568 | #ifdef CONFIG_FINDFS
|
---|
| 569 | static ATTRIBUTE_NORETURN void do_findfs(int argc, char **argv)
|
---|
| 570 | {
|
---|
| 571 | if ((argc != 2) ||
|
---|
| 572 | (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5)))
|
---|
| 573 | bb_show_usage();
|
---|
| 574 | device_name = x_blkid_get_devname(argv[1]);
|
---|
| 575 | puts(device_name);
|
---|
| 576 | exit(0);
|
---|
| 577 | }
|
---|
| 578 | #else
|
---|
| 579 | #define do_findfs(x, y)
|
---|
| 580 | #endif
|
---|
| 581 |
|
---|
| 582 | static void tune2fs_clean_up(void)
|
---|
| 583 | {
|
---|
| 584 | if (ENABLE_FEATURE_CLEAN_UP && device_name) free(device_name);
|
---|
| 585 | if (ENABLE_FEATURE_CLEAN_UP && journal_device) free(journal_device);
|
---|
| 586 | }
|
---|
| 587 |
|
---|
| 588 | int tune2fs_main(int argc, char **argv)
|
---|
| 589 | {
|
---|
| 590 | errcode_t retval;
|
---|
| 591 | ext2_filsys fs;
|
---|
| 592 | struct ext2_super_block *sb;
|
---|
| 593 | io_manager io_ptr;
|
---|
| 594 |
|
---|
| 595 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
| 596 | atexit(tune2fs_clean_up);
|
---|
| 597 |
|
---|
| 598 | if (ENABLE_FINDFS && (bb_applet_name[0] == 'f')) /* findfs */
|
---|
| 599 | do_findfs(argc, argv); /* no return */
|
---|
| 600 | else if (ENABLE_E2LABEL && (bb_applet_name[0] == 'e')) /* e2label */
|
---|
| 601 | parse_e2label_options(argc, argv);
|
---|
| 602 | else
|
---|
| 603 | parse_tune2fs_options(argc, argv); /* tune2fs */
|
---|
| 604 |
|
---|
| 605 | io_ptr = unix_io_manager;
|
---|
| 606 | retval = ext2fs_open2(device_name, io_options, open_flag,
|
---|
| 607 | 0, 0, io_ptr, &fs);
|
---|
| 608 | if (retval)
|
---|
| 609 | bb_error_msg_and_die("No valid superblock on %s", device_name);
|
---|
| 610 | sb = fs->super;
|
---|
| 611 | if (print_label) {
|
---|
| 612 | /* For e2label emulation */
|
---|
| 613 | printf("%.*s\n", (int) sizeof(sb->s_volume_name),
|
---|
| 614 | sb->s_volume_name);
|
---|
| 615 | return 0;
|
---|
| 616 | }
|
---|
| 617 | retval = ext2fs_check_if_mounted(device_name, &mount_flags);
|
---|
| 618 | if (retval)
|
---|
| 619 | bb_error_msg_and_die("Could not determine if %s is mounted", device_name);
|
---|
| 620 | /* Normally we only need to write out the superblock */
|
---|
| 621 | fs->flags |= EXT2_FLAG_SUPER_ONLY;
|
---|
| 622 |
|
---|
| 623 | if (c_flag) {
|
---|
| 624 | sb->s_max_mnt_count = max_mount_count;
|
---|
| 625 | ext2fs_mark_super_dirty(fs);
|
---|
| 626 | printf("Setting maximal mount count to %d\n", max_mount_count);
|
---|
| 627 | }
|
---|
| 628 | if (C_flag) {
|
---|
| 629 | sb->s_mnt_count = mount_count;
|
---|
| 630 | ext2fs_mark_super_dirty(fs);
|
---|
| 631 | printf("Setting current mount count to %d\n", mount_count);
|
---|
| 632 | }
|
---|
| 633 | if (e_flag) {
|
---|
| 634 | sb->s_errors = errors;
|
---|
| 635 | ext2fs_mark_super_dirty(fs);
|
---|
| 636 | printf("Setting error behavior to %d\n", errors);
|
---|
| 637 | }
|
---|
| 638 | if (g_flag) {
|
---|
| 639 | sb->s_def_resgid = resgid;
|
---|
| 640 | ext2fs_mark_super_dirty(fs);
|
---|
| 641 | printf("Setting reserved blocks gid to %lu\n", resgid);
|
---|
| 642 | }
|
---|
| 643 | if (i_flag) {
|
---|
| 644 | sb->s_checkinterval = interval;
|
---|
| 645 | ext2fs_mark_super_dirty(fs);
|
---|
| 646 | printf("Setting interval between check %lu seconds\n", interval);
|
---|
| 647 | }
|
---|
| 648 | if (m_flag) {
|
---|
| 649 | sb->s_r_blocks_count = (sb->s_blocks_count / 100)
|
---|
| 650 | * reserved_ratio;
|
---|
| 651 | ext2fs_mark_super_dirty(fs);
|
---|
| 652 | printf("Setting reserved blocks percentage to %lu (%u blocks)\n",
|
---|
| 653 | reserved_ratio, sb->s_r_blocks_count);
|
---|
| 654 | }
|
---|
| 655 | if (r_flag) {
|
---|
| 656 | if (reserved_blocks >= sb->s_blocks_count/2)
|
---|
| 657 | bb_error_msg_and_die("reserved blocks count is too big (%lu)", reserved_blocks);
|
---|
| 658 | sb->s_r_blocks_count = reserved_blocks;
|
---|
| 659 | ext2fs_mark_super_dirty(fs);
|
---|
| 660 | printf("Setting reserved blocks count to %lu\n", reserved_blocks);
|
---|
| 661 | }
|
---|
| 662 | if (s_flag == 1) {
|
---|
| 663 | if (sb->s_feature_ro_compat &
|
---|
| 664 | EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
|
---|
| 665 | bb_error_msg("\nThe filesystem already has sparse superblocks\n");
|
---|
| 666 | else {
|
---|
| 667 | sb->s_feature_ro_compat |=
|
---|
| 668 | EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
|
---|
| 669 | sb->s_state &= ~EXT2_VALID_FS;
|
---|
| 670 | ext2fs_mark_super_dirty(fs);
|
---|
| 671 | printf("\nSparse superblock flag set. %s", please_fsck);
|
---|
| 672 | }
|
---|
| 673 | }
|
---|
| 674 | if (s_flag == 0) {
|
---|
| 675 | if (!(sb->s_feature_ro_compat &
|
---|
| 676 | EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER))
|
---|
| 677 | bb_error_msg("\nThe filesystem already has sparse superblocks disabled\n");
|
---|
| 678 | else {
|
---|
| 679 | sb->s_feature_ro_compat &=
|
---|
| 680 | ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
|
---|
| 681 | sb->s_state &= ~EXT2_VALID_FS;
|
---|
| 682 | fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
|
---|
| 683 | ext2fs_mark_super_dirty(fs);
|
---|
| 684 | printf("\nSparse superblock flag cleared. %s", please_fsck);
|
---|
| 685 | }
|
---|
| 686 | }
|
---|
| 687 | if (T_flag) {
|
---|
| 688 | sb->s_lastcheck = last_check_time;
|
---|
| 689 | ext2fs_mark_super_dirty(fs);
|
---|
| 690 | printf("Setting time filesystem last checked to %s\n",
|
---|
| 691 | ctime(&last_check_time));
|
---|
| 692 | }
|
---|
| 693 | if (u_flag) {
|
---|
| 694 | sb->s_def_resuid = resuid;
|
---|
| 695 | ext2fs_mark_super_dirty(fs);
|
---|
| 696 | printf("Setting reserved blocks uid to %lu\n", resuid);
|
---|
| 697 | }
|
---|
| 698 | if (L_flag) {
|
---|
| 699 | if (strlen(new_label) > sizeof(sb->s_volume_name))
|
---|
| 700 | bb_error_msg("Warning: label too long, truncating\n");
|
---|
| 701 | memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
|
---|
| 702 | safe_strncpy(sb->s_volume_name, new_label,
|
---|
| 703 | sizeof(sb->s_volume_name));
|
---|
| 704 | ext2fs_mark_super_dirty(fs);
|
---|
| 705 | }
|
---|
| 706 | if (M_flag) {
|
---|
| 707 | memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
|
---|
| 708 | safe_strncpy(sb->s_last_mounted, new_last_mounted,
|
---|
| 709 | sizeof(sb->s_last_mounted));
|
---|
| 710 | ext2fs_mark_super_dirty(fs);
|
---|
| 711 | }
|
---|
| 712 | if (mntopts_cmd)
|
---|
| 713 | update_mntopts(fs, mntopts_cmd);
|
---|
| 714 | if (features_cmd)
|
---|
| 715 | update_feature_set(fs, features_cmd);
|
---|
| 716 | if (journal_size || journal_device)
|
---|
| 717 | add_journal(fs);
|
---|
| 718 |
|
---|
| 719 | if (U_flag) {
|
---|
| 720 | if ((strcasecmp(new_UUID, "null") == 0) ||
|
---|
| 721 | (strcasecmp(new_UUID, "clear") == 0)) {
|
---|
| 722 | uuid_clear(sb->s_uuid);
|
---|
| 723 | } else if (strcasecmp(new_UUID, "time") == 0) {
|
---|
| 724 | uuid_generate_time(sb->s_uuid);
|
---|
| 725 | } else if (strcasecmp(new_UUID, "random") == 0) {
|
---|
| 726 | uuid_generate(sb->s_uuid);
|
---|
| 727 | } else if (uuid_parse(new_UUID, sb->s_uuid)) {
|
---|
| 728 | bb_error_msg_and_die("Invalid UUID format");
|
---|
| 729 | }
|
---|
| 730 | ext2fs_mark_super_dirty(fs);
|
---|
| 731 | }
|
---|
| 732 |
|
---|
| 733 | if (l_flag)
|
---|
| 734 | list_super (sb);
|
---|
| 735 | return (ext2fs_close (fs) ? 1 : 0);
|
---|
| 736 | }
|
---|