[3320] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * mke2fs.c - Make a ext2fs filesystem.
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| 4 | *
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| 5 | * Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
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| 6 | * 2003, 2004, 2005 by Theodore Ts'o.
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| 7 | *
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| 8 | * Licensed under GPLv2, see file LICENSE in this source tree.
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| 9 | */
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| 10 |
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| 11 | /* Usage: mke2fs [options] device
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| 12 | *
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| 13 | * The device may be a block device or a image of one, but this isn't
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| 14 | * enforced (but it's not much fun on a character device :-).
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| 15 | */
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| 16 |
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| 17 | #include <stdio.h>
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| 18 | #include <string.h>
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| 19 | #include <fcntl.h>
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| 20 | #include <ctype.h>
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| 21 | #include <time.h>
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| 22 | #include <getopt.h>
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| 23 | #include <unistd.h>
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| 24 | #include <stdlib.h>
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| 25 | #include <errno.h>
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| 26 | #include <mntent.h>
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| 27 | #include <sys/ioctl.h>
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| 28 | #include <sys/types.h>
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| 29 |
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| 30 | #include "e2fsbb.h"
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| 31 | #include "ext2fs/ext2_fs.h"
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| 32 | #include "uuid/uuid.h"
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| 33 | #include "e2p/e2p.h"
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| 34 | #include "ext2fs/ext2fs.h"
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| 35 | #include "util.h"
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| 36 |
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| 37 | #define STRIDE_LENGTH 8
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| 38 |
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| 39 | #ifndef __sparc__
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| 40 | #define ZAP_BOOTBLOCK
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| 41 | #endif
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| 42 |
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| 43 | static const char * device_name;
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| 44 |
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| 45 | /* Command line options */
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| 46 | static int cflag;
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| 47 | static int quiet;
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| 48 | static int super_only;
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| 49 | static int force;
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| 50 | static int noaction;
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| 51 | static int journal_size;
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| 52 | static int journal_flags;
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| 53 | static const char *bad_blocks_filename;
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| 54 | static __u32 fs_stride;
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| 55 |
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| 56 | static struct ext2_super_block param;
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| 57 | static char *creator_os;
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| 58 | static char *volume_label;
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| 59 | static char *mount_dir;
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| 60 | static char *journal_device = NULL;
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| 61 | static int sync_kludge; /* Set using the MKE2FS_SYNC env. option */
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| 62 |
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| 63 | static int sys_page_size = 4096;
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| 64 | static int linux_version_code = 0;
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| 65 |
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| 66 | static int int_log2(int arg)
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| 67 | {
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| 68 | int l = 0;
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| 69 |
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| 70 | arg >>= 1;
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| 71 | while (arg) {
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| 72 | l++;
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| 73 | arg >>= 1;
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| 74 | }
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| 75 | return l;
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| 76 | }
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| 77 |
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| 78 | static int int_log10(unsigned int arg)
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| 79 | {
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| 80 | int l;
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| 81 |
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| 82 | for (l = 0; arg; l++)
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| 83 | arg = arg / 10;
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| 84 | return l;
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| 85 | }
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| 86 |
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| 87 | /*
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| 88 | * This function sets the default parameters for a filesystem
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| 89 | *
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| 90 | * The type is specified by the user. The size is the maximum size
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| 91 | * (in megabytes) for which a set of parameters applies, with a size
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| 92 | * of zero meaning that it is the default parameter for the type.
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| 93 | * Note that order is important in the table below.
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| 94 | */
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| 95 | #define DEF_MAX_BLOCKSIZE -1
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| 96 | static const char default_str[] = "default";
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| 97 | struct mke2fs_defaults {
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| 98 | const char *type;
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| 99 | int size;
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| 100 | int blocksize;
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| 101 | int inode_ratio;
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| 102 | };
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| 103 |
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| 104 | static const struct mke2fs_defaults settings[] = {
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| 105 | { default_str, 0, 4096, 8192 },
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| 106 | { default_str, 512, 1024, 4096 },
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| 107 | { default_str, 3, 1024, 8192 },
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| 108 | { "journal", 0, 4096, 8192 },
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| 109 | { "news", 0, 4096, 4096 },
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| 110 | { "largefile", 0, 4096, 1024 * 1024 },
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| 111 | { "largefile4", 0, 4096, 4096 * 1024 },
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| 112 | { 0, 0, 0, 0},
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| 113 | };
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| 114 |
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| 115 | static void set_fs_defaults(const char *fs_type,
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| 116 | struct ext2_super_block *super,
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| 117 | int blocksize, int sector_size,
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| 118 | int *inode_ratio)
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| 119 | {
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| 120 | int megs;
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| 121 | int ratio = 0;
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| 122 | const struct mke2fs_defaults *p;
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| 123 | int use_bsize = 1024;
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| 124 |
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| 125 | megs = super->s_blocks_count * (EXT2_BLOCK_SIZE(super) / 1024) / 1024;
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| 126 | if (inode_ratio)
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| 127 | ratio = *inode_ratio;
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| 128 | if (!fs_type)
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| 129 | fs_type = default_str;
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| 130 | for (p = settings; p->type; p++) {
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| 131 | if ((strcmp(p->type, fs_type) != 0) &&
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| 132 | (strcmp(p->type, default_str) != 0))
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| 133 | continue;
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| 134 | if ((p->size != 0) && (megs > p->size))
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| 135 | continue;
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| 136 | if (ratio == 0)
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| 137 | *inode_ratio = p->inode_ratio < blocksize ?
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| 138 | blocksize : p->inode_ratio;
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| 139 | use_bsize = p->blocksize;
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| 140 | }
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| 141 | if (blocksize <= 0) {
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| 142 | if (use_bsize == DEF_MAX_BLOCKSIZE) {
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| 143 | use_bsize = sys_page_size;
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| 144 | if ((linux_version_code < (2*65536 + 6*256)) &&
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| 145 | (use_bsize > 4096))
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| 146 | use_bsize = 4096;
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| 147 | }
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| 148 | if (sector_size && use_bsize < sector_size)
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| 149 | use_bsize = sector_size;
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| 150 | if ((blocksize < 0) && (use_bsize < (-blocksize)))
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| 151 | use_bsize = -blocksize;
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| 152 | blocksize = use_bsize;
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| 153 | super->s_blocks_count /= blocksize / 1024;
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| 154 | }
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| 155 | super->s_log_frag_size = super->s_log_block_size =
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| 156 | int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
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| 157 | }
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| 158 |
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| 159 |
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| 160 | /*
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| 161 | * Helper function for read_bb_file and test_disk
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| 162 | */
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| 163 | static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk)
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| 164 | {
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| 165 | bb_error_msg("Bad block %u out of range; ignored", blk);
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| 166 | }
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| 167 |
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| 168 | /*
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| 169 | * Busybox stuff
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| 170 | */
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| 171 | static void mke2fs_error_msg_and_die(int retval, const char *fmt, ...) __attribute__ ((format (printf, 2, 3)));
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| 172 | static void mke2fs_error_msg_and_die(int retval, const char *fmt, ...)
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| 173 | {
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| 174 | va_list ap;
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| 175 |
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| 176 | if (retval) {
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| 177 | va_start(ap, fmt);
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| 178 | fprintf(stderr, "\nCould not ");
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| 179 | vfprintf(stderr, fmt, ap);
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| 180 | fprintf(stderr, "\n");
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| 181 | va_end(ap);
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| 182 | exit(EXIT_FAILURE);
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| 183 | }
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| 184 | }
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| 185 |
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| 186 | static void mke2fs_verbose(const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
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| 187 | static void mke2fs_verbose(const char *fmt, ...)
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| 188 | {
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| 189 | va_list ap;
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| 190 |
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| 191 | if (!quiet) {
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| 192 | va_start(ap, fmt);
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| 193 | vfprintf(stdout, fmt, ap);
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| 194 | fflush(stdout);
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| 195 | va_end(ap);
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| 196 | }
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| 197 | }
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| 198 |
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| 199 | static void mke2fs_verbose_done(void)
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| 200 | {
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| 201 | mke2fs_verbose("done\n");
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| 202 | }
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| 203 |
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| 204 | static void mke2fs_warning_msg(int retval, char *fmt, ... ) __attribute__ ((format (printf, 2, 3)));
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| 205 | static void mke2fs_warning_msg(int retval, char *fmt, ... )
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| 206 | {
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| 207 | va_list ap;
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| 208 |
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| 209 | if (retval) {
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| 210 | va_start(ap, fmt);
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| 211 | fprintf(stderr, "\nWarning: ");
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| 212 | vfprintf(stderr, fmt, ap);
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| 213 | fprintf(stderr, "\n");
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| 214 | va_end(ap);
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| 215 | }
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| 216 | }
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| 217 |
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| 218 | /*
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| 219 | * Reads the bad blocks list from a file
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| 220 | */
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| 221 | static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
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| 222 | const char *bad_blocks_file)
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| 223 | {
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| 224 | FILE *f;
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| 225 | errcode_t retval;
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| 226 |
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| 227 | f = xfopen_for_read(bad_blocks_file);
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| 228 | retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
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| 229 | fclose (f);
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| 230 | mke2fs_error_msg_and_die(retval, "read bad blocks from list");
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| 231 | }
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| 232 |
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| 233 | /*
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| 234 | * Runs the badblocks program to test the disk
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| 235 | */
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| 236 | static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
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| 237 | {
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| 238 | FILE *f;
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| 239 | errcode_t retval;
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| 240 | char buf[1024];
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| 241 |
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| 242 | sprintf(buf, "badblocks -b %d %s%s%s %d", fs->blocksize,
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| 243 | quiet ? "" : "-s ", (cflag > 1) ? "-w " : "",
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| 244 | fs->device_name, fs->super->s_blocks_count);
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| 245 | mke2fs_verbose("Running command: %s\n", buf);
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| 246 | f = popen(buf, "r");
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| 247 | if (!f) {
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| 248 | bb_perror_msg_and_die("can't run '%s'", buf);
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| 249 | }
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| 250 | retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
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| 251 | pclose(f);
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| 252 | mke2fs_error_msg_and_die(retval, "read bad blocks from program");
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| 253 | }
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| 254 |
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| 255 | static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
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| 256 | {
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| 257 | dgrp_t i;
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| 258 | blk_t j;
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| 259 | unsigned must_be_good;
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| 260 | blk_t blk;
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| 261 | badblocks_iterate bb_iter;
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| 262 | errcode_t retval;
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| 263 | blk_t group_block;
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| 264 | int group;
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| 265 | int group_bad;
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| 266 |
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| 267 | if (!bb_list)
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| 268 | return;
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| 269 |
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| 270 | /*
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| 271 | * The primary superblock and group descriptors *must* be
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| 272 | * good; if not, abort.
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| 273 | */
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| 274 | must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
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| 275 | for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
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| 276 | if (ext2fs_badblocks_list_test(bb_list, i)) {
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| 277 | bb_error_msg_and_die(
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| 278 | "Block %d in primary superblock/group descriptor area bad\n"
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| 279 | "Blocks %d through %d must be good in order to build a filesystem\n"
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| 280 | "Aborting ...", i, fs->super->s_first_data_block, must_be_good);
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| 281 | }
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| 282 | }
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| 283 |
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| 284 | /*
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| 285 | * See if any of the bad blocks are showing up in the backup
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| 286 | * superblocks and/or group descriptors. If so, issue a
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| 287 | * warning and adjust the block counts appropriately.
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| 288 | */
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| 289 | group_block = fs->super->s_first_data_block +
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| 290 | fs->super->s_blocks_per_group;
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| 291 |
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| 292 | for (i = 1; i < fs->group_desc_count; i++) {
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| 293 | group_bad = 0;
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| 294 | for (j=0; j < fs->desc_blocks+1; j++) {
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| 295 | if (ext2fs_badblocks_list_test(bb_list,
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| 296 | group_block + j)) {
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| 297 | mke2fs_warning_msg(!group_bad,
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| 298 | "the backup superblock/group descriptors at block %d contain\n"
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| 299 | "bad blocks\n", group_block);
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| 300 | group_bad++;
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| 301 | group = ext2fs_group_of_blk(fs, group_block+j);
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| 302 | fs->group_desc[group].bg_free_blocks_count++;
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| 303 | fs->super->s_free_blocks_count++;
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| 304 | }
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| 305 | }
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| 306 | group_block += fs->super->s_blocks_per_group;
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| 307 | }
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| 308 |
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| 309 | /*
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| 310 | * Mark all the bad blocks as used...
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| 311 | */
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| 312 | retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
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| 313 | mke2fs_error_msg_and_die(retval, "mark bad blocks as used");
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| 314 |
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| 315 | while (ext2fs_badblocks_list_iterate(bb_iter, &blk))
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| 316 | ext2fs_mark_block_bitmap(fs->block_map, blk);
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| 317 | ext2fs_badblocks_list_iterate_end(bb_iter);
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| 318 | }
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| 319 |
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| 320 | /*
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| 321 | * These functions implement a generalized progress meter.
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| 322 | */
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| 323 | struct progress_struct {
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| 324 | char format[20];
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| 325 | char backup[80];
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| 326 | __u32 max;
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| 327 | int skip_progress;
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| 328 | };
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| 329 |
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| 330 | static void progress_init(struct progress_struct *progress,
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| 331 | const char *label,__u32 max)
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| 332 | {
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| 333 | int i;
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| 334 |
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| 335 | memset(progress, 0, sizeof(struct progress_struct));
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| 336 | if (quiet)
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| 337 | return;
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| 338 |
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| 339 | /*
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| 340 | * Figure out how many digits we need
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| 341 | */
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| 342 | i = int_log10(max);
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| 343 | sprintf(progress->format, "%%%dd/%%%dld", i, i);
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| 344 | memset(progress->backup, '\b', sizeof(progress->backup)-1);
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| 345 | progress->backup[sizeof(progress->backup)-1] = 0;
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| 346 | if ((2*i)+1 < (int) sizeof(progress->backup))
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| 347 | progress->backup[(2*i)+1] = 0;
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| 348 | progress->max = max;
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| 349 |
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| 350 | progress->skip_progress = 0;
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| 351 | if (getenv("MKE2FS_SKIP_PROGRESS"))
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| 352 | progress->skip_progress++;
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| 353 |
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| 354 | fputs(label, stdout);
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| 355 | fflush(stdout);
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| 356 | }
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| 357 |
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| 358 | static void progress_update(struct progress_struct *progress, __u32 val)
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| 359 | {
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| 360 | if ((progress->format[0] == 0) || progress->skip_progress)
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| 361 | return;
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| 362 | printf(progress->format, val, progress->max);
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| 363 | fputs(progress->backup, stdout);
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| 364 | }
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| 365 |
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| 366 | static void progress_close(struct progress_struct *progress)
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| 367 | {
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| 368 | if (progress->format[0] == 0)
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| 369 | return;
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| 370 | printf("%-28s\n", "done");
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| 371 | }
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| 372 |
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| 373 |
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| 374 | /*
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| 375 | * Helper function which zeros out _num_ blocks starting at _blk_. In
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| 376 | * case of an error, the details of the error is returned via _ret_blk_
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| 377 | * and _ret_count_ if they are non-NULL pointers. Returns 0 on
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| 378 | * success, and an error code on an error.
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| 379 | *
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| 380 | * As a special case, if the first argument is NULL, then it will
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| 381 | * attempt to free the static zeroizing buffer. (This is to keep
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| 382 | * programs that check for memory leaks happy.)
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| 383 | */
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| 384 | static errcode_t zero_blocks(ext2_filsys fs, blk_t blk, int num,
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| 385 | struct progress_struct *progress,
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| 386 | blk_t *ret_blk, int *ret_count)
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| 387 | {
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| 388 | int j, count, next_update, next_update_incr;
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| 389 | static char *buf;
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| 390 | errcode_t retval;
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| 391 |
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| 392 | /* If fs is null, clean up the static buffer and return */
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| 393 | if (!fs) {
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| 394 | if (buf) {
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| 395 | free(buf);
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| 396 | buf = 0;
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| 397 | }
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| 398 | return 0;
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| 399 | }
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| 400 | /* Allocate the zeroizing buffer if necessary */
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| 401 | if (!buf) {
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| 402 | buf = xzalloc(fs->blocksize * STRIDE_LENGTH);
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| 403 | }
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| 404 | /* OK, do the write loop */
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| 405 | next_update = 0;
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| 406 | next_update_incr = num / 100;
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| 407 | if (next_update_incr < 1)
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| 408 | next_update_incr = 1;
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| 409 | for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) {
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| 410 | count = num - j;
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| 411 | if (count > STRIDE_LENGTH)
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| 412 | count = STRIDE_LENGTH;
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| 413 | retval = io_channel_write_blk(fs->io, blk, count, buf);
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| 414 | if (retval) {
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| 415 | if (ret_count)
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| 416 | *ret_count = count;
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| 417 | if (ret_blk)
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| 418 | *ret_blk = blk;
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| 419 | return retval;
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| 420 | }
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| 421 | if (progress && j > next_update) {
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| 422 | next_update += num / 100;
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| 423 | progress_update(progress, blk);
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| 424 | }
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| 425 | }
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| 426 | return 0;
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| 427 | }
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| 428 |
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| 429 | static void write_inode_tables(ext2_filsys fs)
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| 430 | {
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| 431 | errcode_t retval;
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| 432 | blk_t blk;
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| 433 | dgrp_t i;
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| 434 | int num;
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| 435 | struct progress_struct progress;
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| 436 |
|
---|
| 437 | if (quiet)
|
---|
| 438 | memset(&progress, 0, sizeof(progress));
|
---|
| 439 | else
|
---|
| 440 | progress_init(&progress, "Writing inode tables: ",
|
---|
| 441 | fs->group_desc_count);
|
---|
| 442 |
|
---|
| 443 | for (i = 0; i < fs->group_desc_count; i++) {
|
---|
| 444 | progress_update(&progress, i);
|
---|
| 445 |
|
---|
| 446 | blk = fs->group_desc[i].bg_inode_table;
|
---|
| 447 | num = fs->inode_blocks_per_group;
|
---|
| 448 |
|
---|
| 449 | retval = zero_blocks(fs, blk, num, 0, &blk, &num);
|
---|
| 450 | mke2fs_error_msg_and_die(retval,
|
---|
| 451 | "write %d blocks in inode table starting at %d.",
|
---|
| 452 | num, blk);
|
---|
| 453 | if (sync_kludge) {
|
---|
| 454 | if (sync_kludge == 1)
|
---|
| 455 | sync();
|
---|
| 456 | else if ((i % sync_kludge) == 0)
|
---|
| 457 | sync();
|
---|
| 458 | }
|
---|
| 459 | }
|
---|
| 460 | zero_blocks(0, 0, 0, 0, 0, 0);
|
---|
| 461 | progress_close(&progress);
|
---|
| 462 | }
|
---|
| 463 |
|
---|
| 464 | static void create_root_dir(ext2_filsys fs)
|
---|
| 465 | {
|
---|
| 466 | errcode_t retval;
|
---|
| 467 | struct ext2_inode inode;
|
---|
| 468 |
|
---|
| 469 | retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
|
---|
| 470 | mke2fs_error_msg_and_die(retval, "create root dir");
|
---|
| 471 | if (geteuid()) {
|
---|
| 472 | retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
|
---|
| 473 | mke2fs_error_msg_and_die(retval, "read root inode");
|
---|
| 474 | inode.i_uid = getuid();
|
---|
| 475 | if (inode.i_uid)
|
---|
| 476 | inode.i_gid = getgid();
|
---|
| 477 | retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
|
---|
| 478 | mke2fs_error_msg_and_die(retval, "set root inode ownership");
|
---|
| 479 | }
|
---|
| 480 | }
|
---|
| 481 |
|
---|
| 482 | static void create_lost_and_found(ext2_filsys fs)
|
---|
| 483 | {
|
---|
| 484 | errcode_t retval;
|
---|
| 485 | ext2_ino_t ino;
|
---|
| 486 | const char *name = "lost+found";
|
---|
| 487 | int i = 1;
|
---|
| 488 | char *msg = "create";
|
---|
| 489 | int lpf_size = 0;
|
---|
| 490 |
|
---|
| 491 | fs->umask = 077;
|
---|
| 492 | retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
|
---|
| 493 | if (retval) {
|
---|
| 494 | goto CREATE_LOST_AND_FOUND_ERROR;
|
---|
| 495 | }
|
---|
| 496 |
|
---|
| 497 | retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
|
---|
| 498 | if (retval) {
|
---|
| 499 | msg = "lookup";
|
---|
| 500 | goto CREATE_LOST_AND_FOUND_ERROR;
|
---|
| 501 | }
|
---|
| 502 |
|
---|
| 503 | for (; i < EXT2_NDIR_BLOCKS; i++) {
|
---|
| 504 | if ((lpf_size += fs->blocksize) >= 16*1024)
|
---|
| 505 | break;
|
---|
| 506 | retval = ext2fs_expand_dir(fs, ino);
|
---|
| 507 | msg = "expand";
|
---|
| 508 | CREATE_LOST_AND_FOUND_ERROR:
|
---|
| 509 | mke2fs_error_msg_and_die(retval, "%s %s", msg, name);
|
---|
| 510 | }
|
---|
| 511 | }
|
---|
| 512 |
|
---|
| 513 | static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
|
---|
| 514 | {
|
---|
| 515 | errcode_t retval;
|
---|
| 516 |
|
---|
| 517 | ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO);
|
---|
| 518 | fs->group_desc[0].bg_free_inodes_count--;
|
---|
| 519 | fs->super->s_free_inodes_count--;
|
---|
| 520 | retval = ext2fs_update_bb_inode(fs, bb_list);
|
---|
| 521 | mke2fs_error_msg_and_die(retval, "set bad block inode");
|
---|
| 522 | }
|
---|
| 523 |
|
---|
| 524 | static void reserve_inodes(ext2_filsys fs)
|
---|
| 525 | {
|
---|
| 526 | ext2_ino_t i;
|
---|
| 527 | int group;
|
---|
| 528 |
|
---|
| 529 | for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) {
|
---|
| 530 | ext2fs_mark_inode_bitmap(fs->inode_map, i);
|
---|
| 531 | group = ext2fs_group_of_ino(fs, i);
|
---|
| 532 | fs->group_desc[group].bg_free_inodes_count--;
|
---|
| 533 | fs->super->s_free_inodes_count--;
|
---|
| 534 | }
|
---|
| 535 | ext2fs_mark_ib_dirty(fs);
|
---|
| 536 | }
|
---|
| 537 |
|
---|
| 538 | #define BSD_DISKMAGIC (0x82564557UL) /* The disk magic number */
|
---|
| 539 | #define BSD_MAGICDISK (0x57455682UL) /* The disk magic number reversed */
|
---|
| 540 | #define BSD_LABEL_OFFSET 64
|
---|
| 541 |
|
---|
| 542 | static void zap_sector(ext2_filsys fs, int sect, int nsect)
|
---|
| 543 | {
|
---|
| 544 | char *buf;
|
---|
| 545 | char *fmt = "could not %s %d";
|
---|
| 546 | int retval;
|
---|
| 547 | unsigned int *magic;
|
---|
| 548 |
|
---|
| 549 | buf = xmalloc(512*nsect);
|
---|
| 550 |
|
---|
| 551 | if (sect == 0) {
|
---|
| 552 | /* Check for a BSD disklabel, and don't erase it if so */
|
---|
| 553 | retval = io_channel_read_blk(fs->io, 0, -512, buf);
|
---|
| 554 | if (retval)
|
---|
| 555 | mke2fs_warning_msg(retval, fmt, "read block", 0);
|
---|
| 556 | else {
|
---|
| 557 | magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
|
---|
| 558 | if ((*magic == BSD_DISKMAGIC) ||
|
---|
| 559 | (*magic == BSD_MAGICDISK))
|
---|
| 560 | return;
|
---|
| 561 | }
|
---|
| 562 | }
|
---|
| 563 |
|
---|
| 564 | memset(buf, 0, 512*nsect);
|
---|
| 565 | io_channel_set_blksize(fs->io, 512);
|
---|
| 566 | retval = io_channel_write_blk(fs->io, sect, -512*nsect, buf);
|
---|
| 567 | io_channel_set_blksize(fs->io, fs->blocksize);
|
---|
| 568 | free(buf);
|
---|
| 569 | mke2fs_warning_msg(retval, fmt, "erase sector", sect);
|
---|
| 570 | }
|
---|
| 571 |
|
---|
| 572 | static void create_journal_dev(ext2_filsys fs)
|
---|
| 573 | {
|
---|
| 574 | struct progress_struct progress;
|
---|
| 575 | errcode_t retval;
|
---|
| 576 | char *buf;
|
---|
| 577 | char *fmt = "%s journal superblock";
|
---|
| 578 | blk_t blk;
|
---|
| 579 | int count;
|
---|
| 580 |
|
---|
| 581 | retval = ext2fs_create_journal_superblock(fs,
|
---|
| 582 | fs->super->s_blocks_count, 0, &buf);
|
---|
| 583 | mke2fs_error_msg_and_die(retval, fmt, "init");
|
---|
| 584 | if (quiet)
|
---|
| 585 | memset(&progress, 0, sizeof(progress));
|
---|
| 586 | else
|
---|
| 587 | progress_init(&progress, "Zeroing journal device: ",
|
---|
| 588 | fs->super->s_blocks_count);
|
---|
| 589 |
|
---|
| 590 | retval = zero_blocks(fs, 0, fs->super->s_blocks_count,
|
---|
| 591 | &progress, &blk, &count);
|
---|
| 592 | mke2fs_error_msg_and_die(retval, "zero journal device (block %u, count %d)",
|
---|
| 593 | blk, count);
|
---|
| 594 | zero_blocks(0, 0, 0, 0, 0, 0);
|
---|
| 595 |
|
---|
| 596 | retval = io_channel_write_blk(fs->io,
|
---|
| 597 | fs->super->s_first_data_block+1,
|
---|
| 598 | 1, buf);
|
---|
| 599 | mke2fs_error_msg_and_die(retval, fmt, "write");
|
---|
| 600 | progress_close(&progress);
|
---|
| 601 | }
|
---|
| 602 |
|
---|
| 603 | static void show_stats(ext2_filsys fs)
|
---|
| 604 | {
|
---|
| 605 | struct ext2_super_block *s = fs->super;
|
---|
| 606 | char *os;
|
---|
| 607 | blk_t group_block;
|
---|
| 608 | dgrp_t i;
|
---|
| 609 | int need, col_left;
|
---|
| 610 |
|
---|
| 611 | mke2fs_warning_msg((param.s_blocks_count != s->s_blocks_count),
|
---|
| 612 | "%d blocks unused\n", param.s_blocks_count - s->s_blocks_count);
|
---|
| 613 | os = e2p_os2string(fs->super->s_creator_os);
|
---|
| 614 | printf( "Filesystem label=%.*s\n"
|
---|
| 615 | "OS type: %s\n"
|
---|
| 616 | "Block size=%u (log=%u)\n"
|
---|
| 617 | "Fragment size=%u (log=%u)\n"
|
---|
| 618 | "%u inodes, %u blocks\n"
|
---|
| 619 | "%u blocks (%2.2f%%) reserved for the super user\n"
|
---|
| 620 | "First data block=%u\n",
|
---|
| 621 | (int) sizeof(s->s_volume_name),
|
---|
| 622 | s->s_volume_name,
|
---|
| 623 | os,
|
---|
| 624 | fs->blocksize, s->s_log_block_size,
|
---|
| 625 | fs->fragsize, s->s_log_frag_size,
|
---|
| 626 | s->s_inodes_count, s->s_blocks_count,
|
---|
| 627 | s->s_r_blocks_count, 100.0 * s->s_r_blocks_count / s->s_blocks_count,
|
---|
| 628 | s->s_first_data_block);
|
---|
| 629 | free(os);
|
---|
| 630 | if (s->s_reserved_gdt_blocks) {
|
---|
| 631 | printf("Maximum filesystem blocks=%lu\n",
|
---|
| 632 | (s->s_reserved_gdt_blocks + fs->desc_blocks) *
|
---|
| 633 | (fs->blocksize / sizeof(struct ext2_group_desc)) *
|
---|
| 634 | s->s_blocks_per_group);
|
---|
| 635 | }
|
---|
| 636 | printf( "%u block group%s\n"
|
---|
| 637 | "%u blocks per group, %u fragments per group\n"
|
---|
| 638 | "%u inodes per group\n",
|
---|
| 639 | fs->group_desc_count, (fs->group_desc_count > 1) ? "s" : "",
|
---|
| 640 | s->s_blocks_per_group, s->s_frags_per_group,
|
---|
| 641 | s->s_inodes_per_group);
|
---|
| 642 | if (fs->group_desc_count == 1) {
|
---|
| 643 | bb_putchar('\n');
|
---|
| 644 | return;
|
---|
| 645 | }
|
---|
| 646 |
|
---|
| 647 | printf("Superblock backups stored on blocks: ");
|
---|
| 648 | group_block = s->s_first_data_block;
|
---|
| 649 | col_left = 0;
|
---|
| 650 | for (i = 1; i < fs->group_desc_count; i++) {
|
---|
| 651 | group_block += s->s_blocks_per_group;
|
---|
| 652 | if (!ext2fs_bg_has_super(fs, i))
|
---|
| 653 | continue;
|
---|
| 654 | if (i != 1)
|
---|
| 655 | printf(", ");
|
---|
| 656 | need = int_log10(group_block) + 2;
|
---|
| 657 | if (need > col_left) {
|
---|
| 658 | printf("\n\t");
|
---|
| 659 | col_left = 72;
|
---|
| 660 | }
|
---|
| 661 | col_left -= need;
|
---|
| 662 | printf("%u", group_block);
|
---|
| 663 | }
|
---|
| 664 | puts("\n");
|
---|
| 665 | }
|
---|
| 666 |
|
---|
| 667 | /*
|
---|
| 668 | * Set the S_CREATOR_OS field. Return true if OS is known,
|
---|
| 669 | * otherwise, 0.
|
---|
| 670 | */
|
---|
| 671 | static int set_os(struct ext2_super_block *sb, char *os)
|
---|
| 672 | {
|
---|
| 673 | if (isdigit (*os)) {
|
---|
| 674 | sb->s_creator_os = atoi(os);
|
---|
| 675 | return 1;
|
---|
| 676 | }
|
---|
| 677 |
|
---|
| 678 | if ((sb->s_creator_os = e2p_string2os(os)) >= 0) {
|
---|
| 679 | return 1;
|
---|
| 680 | } else if (!strcasecmp("GNU", os)) {
|
---|
| 681 | sb->s_creator_os = EXT2_OS_HURD;
|
---|
| 682 | return 1;
|
---|
| 683 | }
|
---|
| 684 | return 0;
|
---|
| 685 | }
|
---|
| 686 |
|
---|
| 687 | static void parse_extended_opts(struct ext2_super_block *sb_param,
|
---|
| 688 | const char *opts)
|
---|
| 689 | {
|
---|
| 690 | char *buf, *token, *next, *p, *arg;
|
---|
| 691 | int r_usage = 0;
|
---|
| 692 |
|
---|
| 693 | buf = xstrdup(opts);
|
---|
| 694 | for (token = buf; token && *token; token = next) {
|
---|
| 695 | p = strchr(token, ',');
|
---|
| 696 | next = 0;
|
---|
| 697 | if (p) {
|
---|
| 698 | *p = 0;
|
---|
| 699 | next = p+1;
|
---|
| 700 | }
|
---|
| 701 | arg = strchr(token, '=');
|
---|
| 702 | if (arg) {
|
---|
| 703 | *arg = 0;
|
---|
| 704 | arg++;
|
---|
| 705 | }
|
---|
| 706 | if (strcmp(token, "stride") == 0) {
|
---|
| 707 | if (!arg) {
|
---|
| 708 | r_usage++;
|
---|
| 709 | continue;
|
---|
| 710 | }
|
---|
| 711 | fs_stride = strtoul(arg, &p, 0);
|
---|
| 712 | if (*p || (fs_stride == 0)) {
|
---|
| 713 | bb_error_msg("Invalid stride parameter: %s", arg);
|
---|
| 714 | r_usage++;
|
---|
| 715 | continue;
|
---|
| 716 | }
|
---|
| 717 | } else if (!strcmp(token, "resize")) {
|
---|
| 718 | unsigned long resize, bpg, rsv_groups;
|
---|
| 719 | unsigned long group_desc_count, desc_blocks;
|
---|
| 720 | unsigned int gdpb, blocksize;
|
---|
| 721 | int rsv_gdb;
|
---|
| 722 |
|
---|
| 723 | if (!arg) {
|
---|
| 724 | r_usage++;
|
---|
| 725 | continue;
|
---|
| 726 | }
|
---|
| 727 |
|
---|
| 728 | resize = parse_num_blocks(arg,
|
---|
| 729 | sb_param->s_log_block_size);
|
---|
| 730 |
|
---|
| 731 | if (resize == 0) {
|
---|
| 732 | bb_error_msg("Invalid resize parameter: %s", arg);
|
---|
| 733 | r_usage++;
|
---|
| 734 | continue;
|
---|
| 735 | }
|
---|
| 736 | if (resize <= sb_param->s_blocks_count) {
|
---|
| 737 | bb_error_msg("The resize maximum must be greater "
|
---|
| 738 | "than the filesystem size");
|
---|
| 739 | r_usage++;
|
---|
| 740 | continue;
|
---|
| 741 | }
|
---|
| 742 |
|
---|
| 743 | blocksize = EXT2_BLOCK_SIZE(sb_param);
|
---|
| 744 | bpg = sb_param->s_blocks_per_group;
|
---|
| 745 | if (!bpg)
|
---|
| 746 | bpg = blocksize * 8;
|
---|
| 747 | gdpb = blocksize / sizeof(struct ext2_group_desc);
|
---|
| 748 | group_desc_count = (sb_param->s_blocks_count +
|
---|
| 749 | bpg - 1) / bpg;
|
---|
| 750 | desc_blocks = (group_desc_count +
|
---|
| 751 | gdpb - 1) / gdpb;
|
---|
| 752 | rsv_groups = (resize + bpg - 1) / bpg;
|
---|
| 753 | rsv_gdb = (rsv_groups + gdpb - 1) / gdpb -
|
---|
| 754 | desc_blocks;
|
---|
| 755 | if (rsv_gdb > EXT2_ADDR_PER_BLOCK(sb_param))
|
---|
| 756 | rsv_gdb = EXT2_ADDR_PER_BLOCK(sb_param);
|
---|
| 757 |
|
---|
| 758 | if (rsv_gdb > 0) {
|
---|
| 759 | sb_param->s_feature_compat |=
|
---|
| 760 | EXT2_FEATURE_COMPAT_RESIZE_INODE;
|
---|
| 761 |
|
---|
| 762 | sb_param->s_reserved_gdt_blocks = rsv_gdb;
|
---|
| 763 | }
|
---|
| 764 | } else
|
---|
| 765 | r_usage++;
|
---|
| 766 | }
|
---|
| 767 | if (r_usage) {
|
---|
| 768 | bb_error_msg_and_die(
|
---|
| 769 | "\nBad options specified.\n\n"
|
---|
| 770 | "Extended options are separated by commas, "
|
---|
| 771 | "and may take an argument which\n"
|
---|
| 772 | "\tis set off by an equals ('=') sign.\n\n"
|
---|
| 773 | "Valid extended options are:\n"
|
---|
| 774 | "\tstride=<stride length in blocks>\n"
|
---|
| 775 | "\tresize=<resize maximum size in blocks>\n");
|
---|
| 776 | }
|
---|
| 777 | }
|
---|
| 778 |
|
---|
| 779 | static __u32 ok_features[3] = {
|
---|
| 780 | EXT3_FEATURE_COMPAT_HAS_JOURNAL |
|
---|
| 781 | EXT2_FEATURE_COMPAT_RESIZE_INODE |
|
---|
| 782 | EXT2_FEATURE_COMPAT_DIR_INDEX, /* Compat */
|
---|
| 783 | EXT2_FEATURE_INCOMPAT_FILETYPE| /* Incompat */
|
---|
| 784 | EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
|
---|
| 785 | EXT2_FEATURE_INCOMPAT_META_BG,
|
---|
| 786 | EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER /* R/O compat */
|
---|
| 787 | };
|
---|
| 788 |
|
---|
| 789 | static int PRS(int argc, char **argv)
|
---|
| 790 | {
|
---|
| 791 | int c;
|
---|
| 792 | int size;
|
---|
| 793 | char * tmp;
|
---|
| 794 | int blocksize = 0;
|
---|
| 795 | int inode_ratio = 0;
|
---|
| 796 | int inode_size = 0;
|
---|
| 797 | int reserved_ratio = 5;
|
---|
| 798 | int sector_size = 0;
|
---|
| 799 | int show_version_only = 0;
|
---|
| 800 | ext2_ino_t num_inodes = 0;
|
---|
| 801 | errcode_t retval;
|
---|
| 802 | char * extended_opts = NULL;
|
---|
| 803 | const char * fs_type = NULL;
|
---|
| 804 | blk_t dev_size;
|
---|
| 805 | long sysval;
|
---|
| 806 |
|
---|
| 807 | /* Update our PATH to include /sbin */
|
---|
| 808 | e2fs_set_sbin_path();
|
---|
| 809 |
|
---|
| 810 | tmp = getenv("MKE2FS_SYNC");
|
---|
| 811 | if (tmp)
|
---|
| 812 | sync_kludge = atoi(tmp);
|
---|
| 813 |
|
---|
| 814 | /* Determine the system page size if possible */
|
---|
| 815 | #if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
|
---|
| 816 | #define _SC_PAGESIZE _SC_PAGE_SIZE
|
---|
| 817 | #endif
|
---|
| 818 | #ifdef _SC_PAGESIZE
|
---|
| 819 | sysval = sysconf(_SC_PAGESIZE);
|
---|
| 820 | if (sysval > 0)
|
---|
| 821 | sys_page_size = sysval;
|
---|
| 822 | #endif /* _SC_PAGESIZE */
|
---|
| 823 |
|
---|
| 824 | setbuf(stdout, NULL);
|
---|
| 825 | setbuf(stderr, NULL);
|
---|
| 826 | memset(¶m, 0, sizeof(struct ext2_super_block));
|
---|
| 827 | param.s_rev_level = 1; /* Create revision 1 filesystems now */
|
---|
| 828 | param.s_feature_incompat |= EXT2_FEATURE_INCOMPAT_FILETYPE;
|
---|
| 829 | param.s_feature_ro_compat |= EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
|
---|
| 830 |
|
---|
| 831 | #ifdef __linux__
|
---|
| 832 | linux_version_code = get_linux_version_code();
|
---|
| 833 | if (linux_version_code && linux_version_code < KERNEL_VERSION(2,2,0)) {
|
---|
| 834 | param.s_rev_level = 0;
|
---|
| 835 | param.s_feature_incompat = 0;
|
---|
| 836 | param.s_feature_compat = 0;
|
---|
| 837 | param.s_feature_ro_compat = 0;
|
---|
| 838 | }
|
---|
| 839 | #endif
|
---|
| 840 |
|
---|
| 841 | /* If called as mkfs.ext3, create a journal inode */
|
---|
| 842 | if (last_char_is(applet_name, '3'))
|
---|
| 843 | journal_size = -1;
|
---|
| 844 |
|
---|
| 845 | while ((c = getopt (argc, argv,
|
---|
| 846 | "b:cE:f:g:i:jl:m:no:qr:R:s:tvI:J:ST:FL:M:N:O:V")) != EOF) {
|
---|
| 847 | switch (c) {
|
---|
| 848 | case 'b':
|
---|
| 849 | blocksize = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE);
|
---|
| 850 | mke2fs_warning_msg((blocksize > 4096),
|
---|
| 851 | "blocksize %d not usable on most systems",
|
---|
| 852 | blocksize);
|
---|
| 853 | param.s_log_block_size =
|
---|
| 854 | int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
|
---|
| 855 | break;
|
---|
| 856 | case 'c': /* Check for bad blocks */
|
---|
| 857 | case 't': /* deprecated */
|
---|
| 858 | cflag++;
|
---|
| 859 | break;
|
---|
| 860 | case 'f':
|
---|
| 861 | size = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE);
|
---|
| 862 | param.s_log_frag_size =
|
---|
| 863 | int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
|
---|
| 864 | mke2fs_warning_msg(1, "fragments not supported. Ignoring -f option");
|
---|
| 865 | break;
|
---|
| 866 | case 'g':
|
---|
| 867 | param.s_blocks_per_group = xatou32(optarg);
|
---|
| 868 | if ((param.s_blocks_per_group % 8) != 0) {
|
---|
| 869 | bb_error_msg_and_die("blocks per group must be multiple of 8");
|
---|
| 870 | }
|
---|
| 871 | break;
|
---|
| 872 | case 'i':
|
---|
| 873 | /* Huh? is "* 1024" correct? */
|
---|
| 874 | inode_ratio = xatou_range(optarg, EXT2_MIN_BLOCK_SIZE, EXT2_MAX_BLOCK_SIZE * 1024);
|
---|
| 875 | break;
|
---|
| 876 | case 'J':
|
---|
| 877 | parse_journal_opts(&journal_device, &journal_flags, &journal_size, optarg);
|
---|
| 878 | break;
|
---|
| 879 | case 'j':
|
---|
| 880 | param.s_feature_compat |=
|
---|
| 881 | EXT3_FEATURE_COMPAT_HAS_JOURNAL;
|
---|
| 882 | if (!journal_size)
|
---|
| 883 | journal_size = -1;
|
---|
| 884 | break;
|
---|
| 885 | case 'l':
|
---|
| 886 | bad_blocks_filename = optarg;
|
---|
| 887 | break;
|
---|
| 888 | case 'm':
|
---|
| 889 | reserved_ratio = xatou_range(optarg, 0, 50);
|
---|
| 890 | break;
|
---|
| 891 | case 'n':
|
---|
| 892 | noaction++;
|
---|
| 893 | break;
|
---|
| 894 | case 'o':
|
---|
| 895 | creator_os = optarg;
|
---|
| 896 | break;
|
---|
| 897 | case 'r':
|
---|
| 898 | param.s_rev_level = xatoi_positive(optarg);
|
---|
| 899 | if (param.s_rev_level == EXT2_GOOD_OLD_REV) {
|
---|
| 900 | param.s_feature_incompat = 0;
|
---|
| 901 | param.s_feature_compat = 0;
|
---|
| 902 | param.s_feature_ro_compat = 0;
|
---|
| 903 | }
|
---|
| 904 | break;
|
---|
| 905 | case 's': /* deprecated */
|
---|
| 906 | if (xatou(optarg))
|
---|
| 907 | param.s_feature_ro_compat |=
|
---|
| 908 | EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
|
---|
| 909 | else
|
---|
| 910 | param.s_feature_ro_compat &=
|
---|
| 911 | ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
|
---|
| 912 | break;
|
---|
| 913 | #ifdef EXT2_DYNAMIC_REV
|
---|
| 914 | case 'I':
|
---|
| 915 | inode_size = xatoi_positive(optarg);
|
---|
| 916 | break;
|
---|
| 917 | #endif
|
---|
| 918 | case 'N':
|
---|
| 919 | num_inodes = xatoi_positive(optarg);
|
---|
| 920 | break;
|
---|
| 921 | case 'v':
|
---|
| 922 | quiet = 0;
|
---|
| 923 | break;
|
---|
| 924 | case 'q':
|
---|
| 925 | quiet = 1;
|
---|
| 926 | break;
|
---|
| 927 | case 'F':
|
---|
| 928 | force = 1;
|
---|
| 929 | break;
|
---|
| 930 | case 'L':
|
---|
| 931 | volume_label = optarg;
|
---|
| 932 | break;
|
---|
| 933 | case 'M':
|
---|
| 934 | mount_dir = optarg;
|
---|
| 935 | break;
|
---|
| 936 | case 'O':
|
---|
| 937 | if (!strcmp(optarg, "none")) {
|
---|
| 938 | param.s_feature_compat = 0;
|
---|
| 939 | param.s_feature_incompat = 0;
|
---|
| 940 | param.s_feature_ro_compat = 0;
|
---|
| 941 | break;
|
---|
| 942 | }
|
---|
| 943 | if (e2p_edit_feature(optarg,
|
---|
| 944 | ¶m.s_feature_compat,
|
---|
| 945 | ok_features)) {
|
---|
| 946 | bb_error_msg_and_die("Invalid filesystem option set: %s", optarg);
|
---|
| 947 | }
|
---|
| 948 | break;
|
---|
| 949 | case 'E':
|
---|
| 950 | case 'R':
|
---|
| 951 | extended_opts = optarg;
|
---|
| 952 | break;
|
---|
| 953 | case 'S':
|
---|
| 954 | super_only = 1;
|
---|
| 955 | break;
|
---|
| 956 | case 'T':
|
---|
| 957 | fs_type = optarg;
|
---|
| 958 | break;
|
---|
| 959 | case 'V':
|
---|
| 960 | /* Print version number and exit */
|
---|
| 961 | show_version_only = 1;
|
---|
| 962 | quiet = 0;
|
---|
| 963 | break;
|
---|
| 964 | default:
|
---|
| 965 | bb_show_usage();
|
---|
| 966 | }
|
---|
| 967 | }
|
---|
| 968 | if ((optind == argc) /*&& !show_version_only*/)
|
---|
| 969 | bb_show_usage();
|
---|
| 970 | device_name = argv[optind++];
|
---|
| 971 |
|
---|
| 972 | mke2fs_verbose("mke2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
|
---|
| 973 |
|
---|
| 974 | if (show_version_only) {
|
---|
| 975 | return 0;
|
---|
| 976 | }
|
---|
| 977 |
|
---|
| 978 | /*
|
---|
| 979 | * If there's no blocksize specified and there is a journal
|
---|
| 980 | * device, use it to figure out the blocksize
|
---|
| 981 | */
|
---|
| 982 | if (blocksize <= 0 && journal_device) {
|
---|
| 983 | ext2_filsys jfs;
|
---|
| 984 | io_manager io_ptr;
|
---|
| 985 |
|
---|
| 986 | #ifdef CONFIG_TESTIO_DEBUG
|
---|
| 987 | io_ptr = test_io_manager;
|
---|
| 988 | test_io_backing_manager = unix_io_manager;
|
---|
| 989 | #else
|
---|
| 990 | io_ptr = unix_io_manager;
|
---|
| 991 | #endif
|
---|
| 992 | retval = ext2fs_open(journal_device,
|
---|
| 993 | EXT2_FLAG_JOURNAL_DEV_OK, 0,
|
---|
| 994 | 0, io_ptr, &jfs);
|
---|
| 995 | mke2fs_error_msg_and_die(retval, "open journal device %s", journal_device);
|
---|
| 996 | if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) {
|
---|
| 997 | bb_error_msg_and_die(
|
---|
| 998 | "Journal dev blocksize (%d) smaller than "
|
---|
| 999 | "minimum blocksize %d\n", jfs->blocksize,
|
---|
| 1000 | -blocksize);
|
---|
| 1001 | }
|
---|
| 1002 | blocksize = jfs->blocksize;
|
---|
| 1003 | param.s_log_block_size =
|
---|
| 1004 | int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
|
---|
| 1005 | ext2fs_close(jfs);
|
---|
| 1006 | }
|
---|
| 1007 |
|
---|
| 1008 | if (blocksize > sys_page_size) {
|
---|
| 1009 | mke2fs_warning_msg(1, "%d-byte blocks too big for system (max %d)",
|
---|
| 1010 | blocksize, sys_page_size);
|
---|
| 1011 | if (!force) {
|
---|
| 1012 | proceed_question();
|
---|
| 1013 | }
|
---|
| 1014 | bb_error_msg("Forced to continue");
|
---|
| 1015 | }
|
---|
| 1016 | mke2fs_warning_msg(((blocksize > 4096) &&
|
---|
| 1017 | (param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)),
|
---|
| 1018 | "some 2.4 kernels do not support "
|
---|
| 1019 | "blocksizes greater than 4096 using ext3.\n"
|
---|
| 1020 | "Use -b 4096 if this is an issue for you\n");
|
---|
| 1021 |
|
---|
| 1022 | if (optind < argc) {
|
---|
| 1023 | param.s_blocks_count = parse_num_blocks(argv[optind++],
|
---|
| 1024 | param.s_log_block_size);
|
---|
| 1025 | mke2fs_error_msg_and_die(!param.s_blocks_count, "invalid blocks count - %s", argv[optind - 1]);
|
---|
| 1026 | }
|
---|
| 1027 | if (optind < argc)
|
---|
| 1028 | bb_show_usage();
|
---|
| 1029 |
|
---|
| 1030 | if (param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
|
---|
| 1031 | if (!fs_type)
|
---|
| 1032 | fs_type = "journal";
|
---|
| 1033 | reserved_ratio = 0;
|
---|
| 1034 | param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
|
---|
| 1035 | param.s_feature_compat = 0;
|
---|
| 1036 | param.s_feature_ro_compat = 0;
|
---|
| 1037 | }
|
---|
| 1038 | if (param.s_rev_level == EXT2_GOOD_OLD_REV &&
|
---|
| 1039 | (param.s_feature_compat || param.s_feature_ro_compat ||
|
---|
| 1040 | param.s_feature_incompat))
|
---|
| 1041 | param.s_rev_level = 1; /* Create a revision 1 filesystem */
|
---|
| 1042 |
|
---|
| 1043 | check_plausibility(device_name , force);
|
---|
| 1044 | check_mount(device_name, force, "filesystem");
|
---|
| 1045 |
|
---|
| 1046 | param.s_log_frag_size = param.s_log_block_size;
|
---|
| 1047 |
|
---|
| 1048 | if (noaction && param.s_blocks_count) {
|
---|
| 1049 | dev_size = param.s_blocks_count;
|
---|
| 1050 | retval = 0;
|
---|
| 1051 | } else {
|
---|
| 1052 | retry:
|
---|
| 1053 | retval = ext2fs_get_device_size(device_name,
|
---|
| 1054 | EXT2_BLOCK_SIZE(¶m),
|
---|
| 1055 | &dev_size);
|
---|
| 1056 | if ((retval == EFBIG) &&
|
---|
| 1057 | (blocksize == 0) &&
|
---|
| 1058 | (param.s_log_block_size == 0)) {
|
---|
| 1059 | param.s_log_block_size = 2;
|
---|
| 1060 | blocksize = 4096;
|
---|
| 1061 | goto retry;
|
---|
| 1062 | }
|
---|
| 1063 | }
|
---|
| 1064 |
|
---|
| 1065 | mke2fs_error_msg_and_die((retval && (retval != EXT2_ET_UNIMPLEMENTED)),"determine filesystem size");
|
---|
| 1066 |
|
---|
| 1067 | if (!param.s_blocks_count) {
|
---|
| 1068 | if (retval == EXT2_ET_UNIMPLEMENTED) {
|
---|
| 1069 | mke2fs_error_msg_and_die(1,
|
---|
| 1070 | "determine device size; you "
|
---|
| 1071 | "must specify\nthe size of the "
|
---|
| 1072 | "filesystem");
|
---|
| 1073 | } else {
|
---|
| 1074 | if (dev_size == 0) {
|
---|
| 1075 | bb_error_msg_and_die(
|
---|
| 1076 | "Device size reported to be zero. "
|
---|
| 1077 | "Invalid partition specified, or\n\t"
|
---|
| 1078 | "partition table wasn't reread "
|
---|
| 1079 | "after running fdisk, due to\n\t"
|
---|
| 1080 | "a modified partition being busy "
|
---|
| 1081 | "and in use. You may need to reboot\n\t"
|
---|
| 1082 | "to re-read your partition table.\n"
|
---|
| 1083 | );
|
---|
| 1084 | }
|
---|
| 1085 | param.s_blocks_count = dev_size;
|
---|
| 1086 | if (sys_page_size > EXT2_BLOCK_SIZE(¶m))
|
---|
| 1087 | param.s_blocks_count &= ~((sys_page_size /
|
---|
| 1088 | EXT2_BLOCK_SIZE(¶m))-1);
|
---|
| 1089 | }
|
---|
| 1090 |
|
---|
| 1091 | } else if (!force && (param.s_blocks_count > dev_size)) {
|
---|
| 1092 | bb_error_msg("Filesystem larger than apparent device size");
|
---|
| 1093 | proceed_question();
|
---|
| 1094 | }
|
---|
| 1095 |
|
---|
| 1096 | /*
|
---|
| 1097 | * If the user asked for HAS_JOURNAL, then make sure a journal
|
---|
| 1098 | * gets created.
|
---|
| 1099 | */
|
---|
| 1100 | if ((param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
|
---|
| 1101 | !journal_size)
|
---|
| 1102 | journal_size = -1;
|
---|
| 1103 |
|
---|
| 1104 | /* Set first meta blockgroup via an environment variable */
|
---|
| 1105 | /* (this is mostly for debugging purposes) */
|
---|
| 1106 | if ((param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
|
---|
| 1107 | ((tmp = getenv("MKE2FS_FIRST_META_BG"))))
|
---|
| 1108 | param.s_first_meta_bg = atoi(tmp);
|
---|
| 1109 |
|
---|
| 1110 | /* Get the hardware sector size, if available */
|
---|
| 1111 | retval = ext2fs_get_device_sectsize(device_name, §or_size);
|
---|
| 1112 | mke2fs_error_msg_and_die(retval, "determine hardware sector size");
|
---|
| 1113 |
|
---|
| 1114 | if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL)
|
---|
| 1115 | sector_size = atoi(tmp);
|
---|
| 1116 |
|
---|
| 1117 | set_fs_defaults(fs_type, ¶m, blocksize, sector_size, &inode_ratio);
|
---|
| 1118 | blocksize = EXT2_BLOCK_SIZE(¶m);
|
---|
| 1119 |
|
---|
| 1120 | if (extended_opts)
|
---|
| 1121 | parse_extended_opts(¶m, extended_opts);
|
---|
| 1122 |
|
---|
| 1123 | /* Since sparse_super is the default, we would only have a problem
|
---|
| 1124 | * here if it was explicitly disabled.
|
---|
| 1125 | */
|
---|
| 1126 | if ((param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) &&
|
---|
| 1127 | !(param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
|
---|
| 1128 | bb_error_msg_and_die("reserved online resize blocks not supported "
|
---|
| 1129 | "on non-sparse filesystem");
|
---|
| 1130 | }
|
---|
| 1131 |
|
---|
| 1132 | if (param.s_blocks_per_group) {
|
---|
| 1133 | if (param.s_blocks_per_group < 256 ||
|
---|
| 1134 | param.s_blocks_per_group > 8 * (unsigned) blocksize) {
|
---|
| 1135 | bb_error_msg_and_die("blocks per group count out of range");
|
---|
| 1136 | }
|
---|
| 1137 | }
|
---|
| 1138 |
|
---|
| 1139 | if (!force && param.s_blocks_count >= (1 << 31)) {
|
---|
| 1140 | bb_error_msg_and_die("Filesystem too large. No more than 2**31-1 blocks\n"
|
---|
| 1141 | "\t (8TB using a blocksize of 4k) are currently supported.");
|
---|
| 1142 | }
|
---|
| 1143 |
|
---|
| 1144 | if (inode_size) {
|
---|
| 1145 | if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
|
---|
| 1146 | inode_size > EXT2_BLOCK_SIZE(¶m) ||
|
---|
| 1147 | inode_size & (inode_size - 1)) {
|
---|
| 1148 | bb_error_msg_and_die("invalid inode size %d (min %d/max %d)",
|
---|
| 1149 | inode_size, EXT2_GOOD_OLD_INODE_SIZE,
|
---|
| 1150 | blocksize);
|
---|
| 1151 | }
|
---|
| 1152 | mke2fs_warning_msg((inode_size != EXT2_GOOD_OLD_INODE_SIZE),
|
---|
| 1153 | "%d-byte inodes not usable on most systems",
|
---|
| 1154 | inode_size);
|
---|
| 1155 | param.s_inode_size = inode_size;
|
---|
| 1156 | }
|
---|
| 1157 |
|
---|
| 1158 | /*
|
---|
| 1159 | * Calculate number of inodes based on the inode ratio
|
---|
| 1160 | */
|
---|
| 1161 | param.s_inodes_count = num_inodes ? num_inodes :
|
---|
| 1162 | ((__u64) param.s_blocks_count * blocksize)
|
---|
| 1163 | / inode_ratio;
|
---|
| 1164 |
|
---|
| 1165 | /*
|
---|
| 1166 | * Calculate number of blocks to reserve
|
---|
| 1167 | */
|
---|
| 1168 | param.s_r_blocks_count = (param.s_blocks_count * reserved_ratio) / 100;
|
---|
| 1169 | return 1;
|
---|
| 1170 | }
|
---|
| 1171 |
|
---|
| 1172 | static void mke2fs_clean_up(void)
|
---|
| 1173 | {
|
---|
| 1174 | if (ENABLE_FEATURE_CLEAN_UP && journal_device) free(journal_device);
|
---|
| 1175 | }
|
---|
| 1176 |
|
---|
| 1177 | int mke2fs_main (int argc, char **argv);
|
---|
| 1178 | int mke2fs_main (int argc, char **argv)
|
---|
| 1179 | {
|
---|
| 1180 | errcode_t retval;
|
---|
| 1181 | ext2_filsys fs;
|
---|
| 1182 | badblocks_list bb_list = 0;
|
---|
| 1183 | unsigned int i;
|
---|
| 1184 | int val;
|
---|
| 1185 | io_manager io_ptr;
|
---|
| 1186 |
|
---|
| 1187 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
| 1188 | atexit(mke2fs_clean_up);
|
---|
| 1189 | if (!PRS(argc, argv))
|
---|
| 1190 | return 0;
|
---|
| 1191 |
|
---|
| 1192 | #ifdef CONFIG_TESTIO_DEBUG
|
---|
| 1193 | io_ptr = test_io_manager;
|
---|
| 1194 | test_io_backing_manager = unix_io_manager;
|
---|
| 1195 | #else
|
---|
| 1196 | io_ptr = unix_io_manager;
|
---|
| 1197 | #endif
|
---|
| 1198 |
|
---|
| 1199 | /*
|
---|
| 1200 | * Initialize the superblock....
|
---|
| 1201 | */
|
---|
| 1202 | retval = ext2fs_initialize(device_name, 0, ¶m,
|
---|
| 1203 | io_ptr, &fs);
|
---|
| 1204 | mke2fs_error_msg_and_die(retval, "set up superblock");
|
---|
| 1205 |
|
---|
| 1206 | /*
|
---|
| 1207 | * Wipe out the old on-disk superblock
|
---|
| 1208 | */
|
---|
| 1209 | if (!noaction)
|
---|
| 1210 | zap_sector(fs, 2, 6);
|
---|
| 1211 |
|
---|
| 1212 | /*
|
---|
| 1213 | * Generate a UUID for it...
|
---|
| 1214 | */
|
---|
| 1215 | uuid_generate(fs->super->s_uuid);
|
---|
| 1216 |
|
---|
| 1217 | /*
|
---|
| 1218 | * Initialize the directory index variables
|
---|
| 1219 | */
|
---|
| 1220 | fs->super->s_def_hash_version = EXT2_HASH_TEA;
|
---|
| 1221 | uuid_generate((unsigned char *) fs->super->s_hash_seed);
|
---|
| 1222 |
|
---|
| 1223 | /*
|
---|
| 1224 | * Add "jitter" to the superblock's check interval so that we
|
---|
| 1225 | * don't check all the filesystems at the same time. We use a
|
---|
| 1226 | * kludgy hack of using the UUID to derive a random jitter value.
|
---|
| 1227 | */
|
---|
| 1228 | for (i = 0, val = 0; i < sizeof(fs->super->s_uuid); i++)
|
---|
| 1229 | val += fs->super->s_uuid[i];
|
---|
| 1230 | fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
|
---|
| 1231 |
|
---|
| 1232 | /*
|
---|
| 1233 | * Override the creator OS, if applicable
|
---|
| 1234 | */
|
---|
| 1235 | if (creator_os && !set_os(fs->super, creator_os)) {
|
---|
| 1236 | bb_error_msg_and_die("unknown os - %s", creator_os);
|
---|
| 1237 | }
|
---|
| 1238 |
|
---|
| 1239 | /*
|
---|
| 1240 | * For the Hurd, we will turn off filetype since it doesn't
|
---|
| 1241 | * support it.
|
---|
| 1242 | */
|
---|
| 1243 | if (fs->super->s_creator_os == EXT2_OS_HURD)
|
---|
| 1244 | fs->super->s_feature_incompat &=
|
---|
| 1245 | ~EXT2_FEATURE_INCOMPAT_FILETYPE;
|
---|
| 1246 |
|
---|
| 1247 | /*
|
---|
| 1248 | * Set the volume label...
|
---|
| 1249 | */
|
---|
| 1250 | if (volume_label) {
|
---|
| 1251 | snprintf(fs->super->s_volume_name, sizeof(fs->super->s_volume_name), "%s", volume_label);
|
---|
| 1252 | }
|
---|
| 1253 |
|
---|
| 1254 | /*
|
---|
| 1255 | * Set the last mount directory
|
---|
| 1256 | */
|
---|
| 1257 | if (mount_dir) {
|
---|
| 1258 | snprintf(fs->super->s_last_mounted, sizeof(fs->super->s_last_mounted), "%s", mount_dir);
|
---|
| 1259 | }
|
---|
| 1260 |
|
---|
| 1261 | if (!quiet || noaction)
|
---|
| 1262 | show_stats(fs);
|
---|
| 1263 |
|
---|
| 1264 | if (noaction)
|
---|
| 1265 | return 0;
|
---|
| 1266 |
|
---|
| 1267 | if (fs->super->s_feature_incompat &
|
---|
| 1268 | EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
|
---|
| 1269 | create_journal_dev(fs);
|
---|
| 1270 | return (ext2fs_close(fs) ? 1 : 0);
|
---|
| 1271 | }
|
---|
| 1272 |
|
---|
| 1273 | if (bad_blocks_filename)
|
---|
| 1274 | read_bb_file(fs, &bb_list, bad_blocks_filename);
|
---|
| 1275 | if (cflag)
|
---|
| 1276 | test_disk(fs, &bb_list);
|
---|
| 1277 |
|
---|
| 1278 | handle_bad_blocks(fs, bb_list);
|
---|
| 1279 | fs->stride = fs_stride;
|
---|
| 1280 | retval = ext2fs_allocate_tables(fs);
|
---|
| 1281 | mke2fs_error_msg_and_die(retval, "allocate filesystem tables");
|
---|
| 1282 | if (super_only) {
|
---|
| 1283 | fs->super->s_state |= EXT2_ERROR_FS;
|
---|
| 1284 | fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
|
---|
| 1285 | } else {
|
---|
| 1286 | /* rsv must be a power of two (64kB is MD RAID sb alignment) */
|
---|
| 1287 | unsigned int rsv = 65536 / fs->blocksize;
|
---|
| 1288 | unsigned long blocks = fs->super->s_blocks_count;
|
---|
| 1289 | unsigned long start;
|
---|
| 1290 | blk_t ret_blk;
|
---|
| 1291 |
|
---|
| 1292 | #ifdef ZAP_BOOTBLOCK
|
---|
| 1293 | zap_sector(fs, 0, 2);
|
---|
| 1294 | #endif
|
---|
| 1295 |
|
---|
| 1296 | /*
|
---|
| 1297 | * Wipe out any old MD RAID (or other) metadata at the end
|
---|
| 1298 | * of the device. This will also verify that the device is
|
---|
| 1299 | * as large as we think. Be careful with very small devices.
|
---|
| 1300 | */
|
---|
| 1301 | start = (blocks & ~(rsv - 1));
|
---|
| 1302 | if (start > rsv)
|
---|
| 1303 | start -= rsv;
|
---|
| 1304 | if (start > 0)
|
---|
| 1305 | retval = zero_blocks(fs, start, blocks - start,
|
---|
| 1306 | NULL, &ret_blk, NULL);
|
---|
| 1307 |
|
---|
| 1308 | mke2fs_warning_msg(retval, "can't zero block %u at end of filesystem", ret_blk);
|
---|
| 1309 | write_inode_tables(fs);
|
---|
| 1310 | create_root_dir(fs);
|
---|
| 1311 | create_lost_and_found(fs);
|
---|
| 1312 | reserve_inodes(fs);
|
---|
| 1313 | create_bad_block_inode(fs, bb_list);
|
---|
| 1314 | if (fs->super->s_feature_compat &
|
---|
| 1315 | EXT2_FEATURE_COMPAT_RESIZE_INODE) {
|
---|
| 1316 | retval = ext2fs_create_resize_inode(fs);
|
---|
| 1317 | mke2fs_error_msg_and_die(retval, "reserve blocks for online resize");
|
---|
| 1318 | }
|
---|
| 1319 | }
|
---|
| 1320 |
|
---|
| 1321 | if (journal_device) {
|
---|
| 1322 | make_journal_device(journal_device, fs, quiet, force);
|
---|
| 1323 | } else if (journal_size) {
|
---|
| 1324 | make_journal_blocks(fs, journal_size, journal_flags, quiet);
|
---|
| 1325 | }
|
---|
| 1326 |
|
---|
| 1327 | mke2fs_verbose("Writing superblocks and filesystem accounting information: ");
|
---|
| 1328 | retval = ext2fs_flush(fs);
|
---|
| 1329 | mke2fs_warning_msg(retval, "had trouble writing out superblocks");
|
---|
| 1330 | mke2fs_verbose_done();
|
---|
| 1331 | if (!quiet && !getenv("MKE2FS_SKIP_CHECK_MSG"))
|
---|
| 1332 | print_check_message(fs);
|
---|
| 1333 | val = ext2fs_close(fs);
|
---|
| 1334 | return (retval || val) ? 1 : 0;
|
---|
| 1335 | }
|
---|