e2fsprogs/e2p/ls.c

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