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 |
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437 | if (quiet)
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438 | memset(&progress, 0, sizeof(progress));
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439 | else
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440 | progress_init(&progress, "Writing inode tables: ",
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441 | fs->group_desc_count);
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442 |
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443 | for (i = 0; i < fs->group_desc_count; i++) {
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444 | progress_update(&progress, i);
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445 |
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446 | blk = fs->group_desc[i].bg_inode_table;
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447 | num = fs->inode_blocks_per_group;
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448 |
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449 | retval = zero_blocks(fs, blk, num, 0, &blk, &num);
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450 | mke2fs_error_msg_and_die(retval,
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451 | "write %d blocks in inode table starting at %d.",
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452 | num, blk);
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453 | if (sync_kludge) {
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454 | if (sync_kludge == 1)
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455 | sync();
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456 | else if ((i % sync_kludge) == 0)
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457 | sync();
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458 | }
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459 | }
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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 | }
|
---|