[1765] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * ls.c - List the contents of an ext2fs superblock
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| 4 | *
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| 5 | * Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
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| 6 | * Laboratoire MASI, Institut Blaise Pascal
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| 7 | * Universite Pierre et Marie Curie (Paris VI)
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| 8 | *
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| 9 | * Copyright (C) 1995, 1996, 1997 Theodore Ts'o <tytso@mit.edu>
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| 10 | *
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| 11 | * This file can be redistributed under the terms of the GNU Library General
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| 12 | * Public License
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| 13 | */
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| 14 |
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| 15 | #include <stdio.h>
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| 16 | #include <stdlib.h>
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| 17 | #include <sys/types.h>
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| 18 | #include <string.h>
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| 19 | #include <grp.h>
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| 20 | #include <pwd.h>
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| 21 | #include <time.h>
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| 22 |
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| 23 | #include "e2p.h"
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| 24 |
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| 25 | static void print_user(unsigned short uid, FILE *f)
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| 26 | {
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| 27 | struct passwd *pw = getpwuid(uid);
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| 28 | fprintf(f, "%u (user %s)\n", uid,
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| 29 | (pw == NULL ? "unknown" : pw->pw_name));
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| 30 | }
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| 31 |
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| 32 | static void print_group(unsigned short gid, FILE *f)
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| 33 | {
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| 34 | struct group *gr = getgrgid(gid);
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| 35 | fprintf(f, "%u (group %s)\n", gid,
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| 36 | (gr == NULL ? "unknown" : gr->gr_name));
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| 37 | }
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| 38 |
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| 39 | #define MONTH_INT (86400 * 30)
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| 40 | #define WEEK_INT (86400 * 7)
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| 41 | #define DAY_INT (86400)
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| 42 | #define HOUR_INT (60 * 60)
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| 43 | #define MINUTE_INT (60)
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| 44 |
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| 45 | static const char *interval_string(unsigned int secs)
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| 46 | {
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| 47 | static char buf[256], tmp[80];
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| 48 | int hr, min, num;
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| 49 |
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| 50 | buf[0] = 0;
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| 51 |
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| 52 | if (secs == 0)
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| 53 | return "<none>";
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| 54 |
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| 55 | if (secs >= MONTH_INT) {
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| 56 | num = secs / MONTH_INT;
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| 57 | secs -= num*MONTH_INT;
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| 58 | sprintf(buf, "%d month%s", num, (num>1) ? "s" : "");
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| 59 | }
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| 60 | if (secs >= WEEK_INT) {
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| 61 | num = secs / WEEK_INT;
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| 62 | secs -= num*WEEK_INT;
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| 63 | sprintf(tmp, "%s%d week%s", buf[0] ? ", " : "",
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| 64 | num, (num>1) ? "s" : "");
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| 65 | strcat(buf, tmp);
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| 66 | }
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| 67 | if (secs >= DAY_INT) {
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| 68 | num = secs / DAY_INT;
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| 69 | secs -= num*DAY_INT;
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| 70 | sprintf(tmp, "%s%d day%s", buf[0] ? ", " : "",
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| 71 | num, (num>1) ? "s" : "");
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| 72 | strcat(buf, tmp);
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| 73 | }
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| 74 | if (secs > 0) {
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| 75 | hr = secs / HOUR_INT;
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| 76 | secs -= hr*HOUR_INT;
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| 77 | min = secs / MINUTE_INT;
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| 78 | secs -= min*MINUTE_INT;
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| 79 | sprintf(tmp, "%s%d:%02d:%02d", buf[0] ? ", " : "",
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| 80 | hr, min, secs);
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| 81 | strcat(buf, tmp);
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| 82 | }
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| 83 | return buf;
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| 84 | }
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| 85 |
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| 86 | static void print_features(struct ext2_super_block * s, FILE *f)
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| 87 | {
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| 88 | #ifdef EXT2_DYNAMIC_REV
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| 89 | int i, j, printed=0;
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| 90 | __u32 *mask = &s->s_feature_compat, m;
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| 91 |
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| 92 | fprintf(f, "Filesystem features: ");
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| 93 | for (i=0; i <3; i++,mask++) {
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| 94 | for (j=0,m=1; j < 32; j++, m<<=1) {
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| 95 | if (*mask & m) {
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| 96 | fprintf(f, " %s", e2p_feature2string(i, m));
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| 97 | printed++;
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| 98 | }
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| 99 | }
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| 100 | }
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| 101 | if (printed == 0)
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| 102 | fprintf(f, " (none)");
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| 103 | fprintf(f, "\n");
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| 104 | #endif
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| 105 | }
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| 106 |
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| 107 | static void print_mntopts(struct ext2_super_block * s, FILE *f)
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| 108 | {
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| 109 | #ifdef EXT2_DYNAMIC_REV
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| 110 | int i, printed=0;
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| 111 | __u32 mask = s->s_default_mount_opts, m;
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| 112 |
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| 113 | fprintf(f, "Default mount options: ");
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| 114 | if (mask & EXT3_DEFM_JMODE) {
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| 115 | fprintf(f, " %s", e2p_mntopt2string(mask & EXT3_DEFM_JMODE));
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| 116 | printed++;
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| 117 | }
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| 118 | for (i=0,m=1; i < 32; i++, m<<=1) {
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| 119 | if (m & EXT3_DEFM_JMODE)
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| 120 | continue;
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| 121 | if (mask & m) {
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| 122 | fprintf(f, " %s", e2p_mntopt2string(m));
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| 123 | printed++;
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| 124 | }
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| 125 | }
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| 126 | if (printed == 0)
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| 127 | fprintf(f, " (none)");
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| 128 | fprintf(f, "\n");
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| 129 | #endif
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| 130 | }
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| 131 |
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| 132 |
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| 133 | #ifndef EXT2_INODE_SIZE
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| 134 | #define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
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| 135 | #endif
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| 136 |
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| 137 | #ifndef EXT2_GOOD_OLD_REV
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| 138 | #define EXT2_GOOD_OLD_REV 0
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| 139 | #endif
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| 140 |
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| 141 | void list_super2(struct ext2_super_block * sb, FILE *f)
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| 142 | {
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| 143 | int inode_blocks_per_group;
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| 144 | char buf[80], *str;
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| 145 | time_t tm;
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| 146 |
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| 147 | inode_blocks_per_group = (((sb->s_inodes_per_group *
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| 148 | EXT2_INODE_SIZE(sb)) +
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| 149 | EXT2_BLOCK_SIZE(sb) - 1) /
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| 150 | EXT2_BLOCK_SIZE(sb));
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| 151 | if (sb->s_volume_name[0]) {
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| 152 | memset(buf, 0, sizeof(buf));
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| 153 | strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name));
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| 154 | } else
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| 155 | strcpy(buf, "<none>");
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| 156 | fprintf(f, "Filesystem volume name: %s\n", buf);
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| 157 | if (sb->s_last_mounted[0]) {
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| 158 | memset(buf, 0, sizeof(buf));
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| 159 | strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted));
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| 160 | } else
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| 161 | strcpy(buf, "<not available>");
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| 162 | fprintf(f,
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| 163 | "Last mounted on: %s\n"
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| 164 | "Filesystem UUID: %s\n"
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| 165 | "Filesystem magic number: 0x%04X\n"
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| 166 | "Filesystem revision #: %d",
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| 167 | buf, e2p_uuid2str(sb->s_uuid), sb->s_magic, sb->s_rev_level);
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| 168 | if (sb->s_rev_level == EXT2_GOOD_OLD_REV) {
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| 169 | fprintf(f, " (original)\n");
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| 170 | #ifdef EXT2_DYNAMIC_REV
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| 171 | } else if (sb->s_rev_level == EXT2_DYNAMIC_REV) {
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| 172 | fprintf(f, " (dynamic)\n");
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| 173 | #endif
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| 174 | } else
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| 175 | fprintf(f, " (unknown)\n");
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| 176 | print_features(sb, f);
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| 177 | print_mntopts(sb, f);
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| 178 | fprintf(f, "Filesystem state: ");
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| 179 | print_fs_state (f, sb->s_state);
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| 180 | fprintf(f, "\nErrors behavior: ");
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| 181 | print_fs_errors(f, sb->s_errors);
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| 182 | str = e2p_os2string(sb->s_creator_os);
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| 183 | fprintf(f,
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| 184 | "\n"
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| 185 | "Filesystem OS type: %s\n"
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| 186 | "Inode count: %u\n"
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| 187 | "Block count: %u\n"
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| 188 | "Reserved block count: %u\n"
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| 189 | "Free blocks: %u\n"
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| 190 | "Free inodes: %u\n"
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| 191 | "First block: %u\n"
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| 192 | "Block size: %u\n"
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| 193 | "Fragment size: %u\n",
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| 194 | str, sb->s_inodes_count, sb->s_blocks_count, sb->s_r_blocks_count,
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| 195 | sb->s_free_blocks_count, sb->s_free_inodes_count,
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| 196 | sb->s_first_data_block, EXT2_BLOCK_SIZE(sb), EXT2_FRAG_SIZE(sb));
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| 197 | free(str);
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| 198 | if (sb->s_reserved_gdt_blocks)
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| 199 | fprintf(f, "Reserved GDT blocks: %u\n",
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| 200 | sb->s_reserved_gdt_blocks);
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| 201 | fprintf(f,
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| 202 | "Blocks per group: %u\n"
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| 203 | "Fragments per group: %u\n"
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| 204 | "Inodes per group: %u\n"
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| 205 | "Inode blocks per group: %u\n",
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| 206 | sb->s_blocks_per_group, sb->s_frags_per_group,
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| 207 | sb->s_inodes_per_group, inode_blocks_per_group);
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| 208 | if (sb->s_first_meta_bg)
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| 209 | fprintf(f, "First meta block group: %u\n",
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| 210 | sb->s_first_meta_bg);
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| 211 | if (sb->s_mkfs_time) {
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| 212 | tm = sb->s_mkfs_time;
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| 213 | fprintf(f, "Filesystem created: %s", ctime(&tm));
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| 214 | }
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| 215 | tm = sb->s_mtime;
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| 216 | fprintf(f, "Last mount time: %s",
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| 217 | sb->s_mtime ? ctime(&tm) : "n/a\n");
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| 218 | tm = sb->s_wtime;
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| 219 | fprintf(f,
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| 220 | "Last write time: %s"
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| 221 | "Mount count: %u\n"
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| 222 | "Maximum mount count: %d\n",
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| 223 | ctime(&tm), sb->s_mnt_count, sb->s_max_mnt_count);
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| 224 | tm = sb->s_lastcheck;
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| 225 | fprintf(f,
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| 226 | "Last checked: %s"
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| 227 | "Check interval: %u (%s)\n",
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| 228 | ctime(&tm),
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| 229 | sb->s_checkinterval, interval_string(sb->s_checkinterval));
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| 230 | if (sb->s_checkinterval)
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| 231 | {
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| 232 | time_t next;
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| 233 |
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| 234 | next = sb->s_lastcheck + sb->s_checkinterval;
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| 235 | fprintf(f, "Next check after: %s", ctime(&next));
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| 236 | }
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| 237 | fprintf(f, "Reserved blocks uid: ");
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| 238 | print_user(sb->s_def_resuid, f);
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| 239 | fprintf(f, "Reserved blocks gid: ");
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| 240 | print_group(sb->s_def_resgid, f);
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| 241 | if (sb->s_rev_level >= EXT2_DYNAMIC_REV) {
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| 242 | fprintf(f,
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| 243 | "First inode: %d\n"
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| 244 | "Inode size: %d\n",
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| 245 | sb->s_first_ino, sb->s_inode_size);
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| 246 | }
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| 247 | if (!e2p_is_null_uuid(sb->s_journal_uuid))
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| 248 | fprintf(f, "Journal UUID: %s\n",
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| 249 | e2p_uuid2str(sb->s_journal_uuid));
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| 250 | if (sb->s_journal_inum)
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| 251 | fprintf(f, "Journal inode: %u\n",
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| 252 | sb->s_journal_inum);
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| 253 | if (sb->s_journal_dev)
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| 254 | fprintf(f, "Journal device: 0x%04x\n",
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| 255 | sb->s_journal_dev);
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| 256 | if (sb->s_last_orphan)
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| 257 | fprintf(f, "First orphan inode: %u\n",
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| 258 | sb->s_last_orphan);
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| 259 | if ((sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) ||
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| 260 | sb->s_def_hash_version)
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| 261 | fprintf(f, "Default directory hash: %s\n",
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| 262 | e2p_hash2string(sb->s_def_hash_version));
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| 263 | if (!e2p_is_null_uuid(sb->s_hash_seed))
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| 264 | fprintf(f, "Directory Hash Seed: %s\n",
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| 265 | e2p_uuid2str(sb->s_hash_seed));
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| 266 | if (sb->s_jnl_backup_type) {
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| 267 | fprintf(f, "Journal backup: ");
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| 268 | if (sb->s_jnl_backup_type == 1)
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| 269 | fprintf(f, "inode blocks\n");
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| 270 | else
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| 271 | fprintf(f, "type %u\n", sb->s_jnl_backup_type);
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| 272 | }
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| 273 | }
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