1 | /*
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2 | * ls.c - List the contents of an ext2fs superblock
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3 | *
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4 | * Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
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5 | * Laboratoire MASI, Institut Blaise Pascal
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6 | * Universite Pierre et Marie Curie (Paris VI)
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7 | *
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8 | * Copyright (C) 1995, 1996, 1997 Theodore Ts'o <tytso@mit.edu>
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9 | *
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10 | * This file can be redistributed under the terms of the GNU Library General
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11 | * Public License
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12 | */
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13 |
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14 | #include <stdio.h>
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15 | #include <stdlib.h>
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16 | #include <sys/types.h>
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17 | #include <string.h>
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18 | #include <grp.h>
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19 | #include <pwd.h>
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20 | #include <time.h>
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21 |
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22 | #include "e2p.h"
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23 |
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24 | static void print_user(unsigned short uid, FILE *f)
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25 | {
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26 | struct passwd *pw = getpwuid(uid);
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27 | fprintf(f, "%u (user %s)\n", uid,
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28 | (pw == NULL ? "unknown" : pw->pw_name));
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29 | }
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30 |
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31 | static void print_group(unsigned short gid, FILE *f)
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32 | {
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33 | struct group *gr = getgrgid(gid);
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34 | fprintf(f, "%u (group %s)\n", gid,
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35 | (gr == NULL ? "unknown" : gr->gr_name));
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36 | }
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37 |
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38 | #define MONTH_INT (86400 * 30)
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39 | #define WEEK_INT (86400 * 7)
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40 | #define DAY_INT (86400)
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41 | #define HOUR_INT (60 * 60)
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42 | #define MINUTE_INT (60)
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43 |
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44 | static const char *interval_string(unsigned int secs)
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45 | {
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46 | static char buf[256], tmp[80];
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47 | int hr, min, num;
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48 |
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49 | buf[0] = 0;
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50 |
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51 | if (secs == 0)
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52 | return "<none>";
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53 |
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54 | if (secs >= MONTH_INT) {
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55 | num = secs / MONTH_INT;
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56 | secs -= num*MONTH_INT;
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57 | sprintf(buf, "%d month%s", num, (num>1) ? "s" : "");
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58 | }
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59 | if (secs >= WEEK_INT) {
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60 | num = secs / WEEK_INT;
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61 | secs -= num*WEEK_INT;
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62 | sprintf(tmp, "%s%d week%s", buf[0] ? ", " : "",
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63 | num, (num>1) ? "s" : "");
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64 | strcat(buf, tmp);
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65 | }
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66 | if (secs >= DAY_INT) {
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67 | num = secs / DAY_INT;
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68 | secs -= num*DAY_INT;
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69 | sprintf(tmp, "%s%d day%s", buf[0] ? ", " : "",
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70 | num, (num>1) ? "s" : "");
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71 | strcat(buf, tmp);
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72 | }
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73 | if (secs > 0) {
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74 | hr = secs / HOUR_INT;
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75 | secs -= hr*HOUR_INT;
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76 | min = secs / MINUTE_INT;
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77 | secs -= min*MINUTE_INT;
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78 | sprintf(tmp, "%s%d:%02d:%02d", buf[0] ? ", " : "",
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79 | hr, min, secs);
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80 | strcat(buf, tmp);
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81 | }
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82 | return buf;
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83 | }
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84 |
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85 | static void print_features(struct ext2_super_block * s, FILE *f)
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86 | {
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87 | #ifdef EXT2_DYNAMIC_REV
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88 | int i, j, printed=0;
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89 | __u32 *mask = &s->s_feature_compat, m;
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90 |
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91 | fprintf(f, "Filesystem features: ");
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92 | for (i=0; i <3; i++,mask++) {
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93 | for (j=0,m=1; j < 32; j++, m<<=1) {
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94 | if (*mask & m) {
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95 | fprintf(f, " %s", e2p_feature2string(i, m));
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96 | printed++;
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97 | }
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98 | }
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99 | }
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100 | if (printed == 0)
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101 | fprintf(f, " (none)");
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102 | fprintf(f, "\n");
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103 | #endif
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104 | }
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105 |
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106 | static void print_mntopts(struct ext2_super_block * s, FILE *f)
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107 | {
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108 | #ifdef EXT2_DYNAMIC_REV
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109 | int i, printed=0;
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110 | __u32 mask = s->s_default_mount_opts, m;
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111 |
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112 | fprintf(f, "Default mount options: ");
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113 | if (mask & EXT3_DEFM_JMODE) {
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114 | fprintf(f, " %s", e2p_mntopt2string(mask & EXT3_DEFM_JMODE));
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115 | printed++;
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116 | }
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117 | for (i=0,m=1; i < 32; i++, m<<=1) {
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118 | if (m & EXT3_DEFM_JMODE)
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119 | continue;
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120 | if (mask & m) {
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121 | fprintf(f, " %s", e2p_mntopt2string(m));
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122 | printed++;
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123 | }
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124 | }
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125 | if (printed == 0)
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126 | fprintf(f, " (none)");
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127 | fprintf(f, "\n");
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128 | #endif
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129 | }
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130 |
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131 |
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132 | #ifndef EXT2_INODE_SIZE
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133 | #define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
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134 | #endif
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135 |
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136 | #ifndef EXT2_GOOD_OLD_REV
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137 | #define EXT2_GOOD_OLD_REV 0
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138 | #endif
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139 |
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140 | void list_super2(struct ext2_super_block * sb, FILE *f)
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141 | {
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142 | int inode_blocks_per_group;
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143 | char buf[80], *str;
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144 | time_t tm;
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145 |
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146 | inode_blocks_per_group = (((sb->s_inodes_per_group *
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147 | EXT2_INODE_SIZE(sb)) +
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148 | EXT2_BLOCK_SIZE(sb) - 1) /
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149 | EXT2_BLOCK_SIZE(sb));
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150 | if (sb->s_volume_name[0]) {
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151 | memset(buf, 0, sizeof(buf));
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152 | strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name));
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153 | } else
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154 | strcpy(buf, "<none>");
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155 | fprintf(f, "Filesystem volume name: %s\n", buf);
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156 | if (sb->s_last_mounted[0]) {
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157 | memset(buf, 0, sizeof(buf));
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158 | strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted));
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159 | } else
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160 | strcpy(buf, "<not available>");
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161 | fprintf(f,
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162 | "Last mounted on: %s\n"
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163 | "Filesystem UUID: %s\n"
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164 | "Filesystem magic number: 0x%04X\n"
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165 | "Filesystem revision #: %d",
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166 | buf, e2p_uuid2str(sb->s_uuid), sb->s_magic, sb->s_rev_level);
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167 | if (sb->s_rev_level == EXT2_GOOD_OLD_REV) {
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168 | fprintf(f, " (original)\n");
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169 | #ifdef EXT2_DYNAMIC_REV
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170 | } else if (sb->s_rev_level == EXT2_DYNAMIC_REV) {
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171 | fprintf(f, " (dynamic)\n");
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172 | #endif
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173 | } else
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174 | fprintf(f, " (unknown)\n");
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175 | print_features(sb, f);
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176 | print_mntopts(sb, f);
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177 | fprintf(f, "Filesystem state: ");
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178 | print_fs_state (f, sb->s_state);
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179 | fprintf(f, "\nErrors behavior: ");
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180 | print_fs_errors(f, sb->s_errors);
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181 | str = e2p_os2string(sb->s_creator_os);
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182 | fprintf(f,
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183 | "\n"
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184 | "Filesystem OS type: %s\n"
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185 | "Inode count: %u\n"
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186 | "Block count: %u\n"
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187 | "Reserved block count: %u\n"
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188 | "Free blocks: %u\n"
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189 | "Free inodes: %u\n"
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190 | "First block: %u\n"
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191 | "Block size: %u\n"
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192 | "Fragment size: %u\n",
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193 | str, sb->s_inodes_count, sb->s_blocks_count, sb->s_r_blocks_count,
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194 | sb->s_free_blocks_count, sb->s_free_inodes_count,
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195 | sb->s_first_data_block, EXT2_BLOCK_SIZE(sb), EXT2_FRAG_SIZE(sb));
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196 | free(str);
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197 | if (sb->s_reserved_gdt_blocks)
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198 | fprintf(f, "Reserved GDT blocks: %u\n",
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199 | sb->s_reserved_gdt_blocks);
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200 | fprintf(f,
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201 | "Blocks per group: %u\n"
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202 | "Fragments per group: %u\n"
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203 | "Inodes per group: %u\n"
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204 | "Inode blocks per group: %u\n",
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205 | sb->s_blocks_per_group, sb->s_frags_per_group,
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206 | sb->s_inodes_per_group, inode_blocks_per_group);
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207 | if (sb->s_first_meta_bg)
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208 | fprintf(f, "First meta block group: %u\n",
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209 | sb->s_first_meta_bg);
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210 | if (sb->s_mkfs_time) {
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211 | tm = sb->s_mkfs_time;
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212 | fprintf(f, "Filesystem created: %s", ctime(&tm));
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213 | }
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214 | tm = sb->s_mtime;
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215 | fprintf(f, "Last mount time: %s",
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216 | sb->s_mtime ? ctime(&tm) : "n/a\n");
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217 | tm = sb->s_wtime;
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218 | fprintf(f,
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219 | "Last write time: %s"
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220 | "Mount count: %u\n"
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221 | "Maximum mount count: %d\n",
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222 | ctime(&tm), sb->s_mnt_count, sb->s_max_mnt_count);
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223 | tm = sb->s_lastcheck;
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224 | fprintf(f,
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225 | "Last checked: %s"
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226 | "Check interval: %u (%s)\n",
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227 | ctime(&tm),
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228 | sb->s_checkinterval, interval_string(sb->s_checkinterval));
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229 | if (sb->s_checkinterval)
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230 | {
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231 | time_t next;
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232 |
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233 | next = sb->s_lastcheck + sb->s_checkinterval;
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234 | fprintf(f, "Next check after: %s", ctime(&next));
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235 | }
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236 | fprintf(f, "Reserved blocks uid: ");
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237 | print_user(sb->s_def_resuid, f);
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238 | fprintf(f, "Reserved blocks gid: ");
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239 | print_group(sb->s_def_resgid, f);
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240 | if (sb->s_rev_level >= EXT2_DYNAMIC_REV) {
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241 | fprintf(f,
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242 | "First inode: %d\n"
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243 | "Inode size: %d\n",
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244 | sb->s_first_ino, sb->s_inode_size);
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245 | }
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246 | if (!e2p_is_null_uuid(sb->s_journal_uuid))
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247 | fprintf(f, "Journal UUID: %s\n",
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248 | e2p_uuid2str(sb->s_journal_uuid));
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249 | if (sb->s_journal_inum)
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250 | fprintf(f, "Journal inode: %u\n",
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251 | sb->s_journal_inum);
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252 | if (sb->s_journal_dev)
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253 | fprintf(f, "Journal device: 0x%04x\n",
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254 | sb->s_journal_dev);
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255 | if (sb->s_last_orphan)
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256 | fprintf(f, "First orphan inode: %u\n",
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257 | sb->s_last_orphan);
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258 | if ((sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) ||
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259 | sb->s_def_hash_version)
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260 | fprintf(f, "Default directory hash: %s\n",
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261 | e2p_hash2string(sb->s_def_hash_version));
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262 | if (!e2p_is_null_uuid(sb->s_hash_seed))
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263 | fprintf(f, "Directory Hash Seed: %s\n",
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264 | e2p_uuid2str(sb->s_hash_seed));
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265 | if (sb->s_jnl_backup_type) {
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266 | fprintf(f, "Journal backup: ");
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267 | if (sb->s_jnl_backup_type == 1)
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268 | fprintf(f, "inode blocks\n");
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269 | else
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270 | fprintf(f, "type %u\n", sb->s_jnl_backup_type);
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271 | }
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272 | }
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