lib/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;
  26
  27         fprintf(f, "%u ", uid);
  28         pw = getpwuid (uid);
  29         if (pw == NULL)
  30                 fprintf(f, "(user unknown)\n");
  31         else
  32                 fprintf(f, "(user %s)\n", pw->pw_name);
  33 }
  34
  35 static void print_group (unsigned short gid, FILE *f)
  36 {
  37         struct group *gr;
  38
  39         fprintf(f, "%u ", gid);
  40         gr = getgrgid (gid);
  41         if (gr == NULL)
  42                 fprintf(f, "(group unknown)\n");
  43         else
  44                 fprintf(f, "(group %s)\n", gr->gr_name);
  45 }
  46
  47 #define MONTH_INT (86400 * 30)
  48 #define WEEK_INT (86400 * 7)
  49 #define DAY_INT (86400)
  50 #define HOUR_INT (60 * 60)
  51 #define MINUTE_INT (60)
  52
  53 static const char *interval_string(unsigned int secs)
  54 {
  55         static char buf[256], tmp[80];
  56         int             hr, min, num;
  57
  58         buf[0] = 0;
  59
  60         if (secs == 0)
  61                 return "<none>";
  62
  63         if (secs >= MONTH_INT) {
  64                 num = secs / MONTH_INT;
  65                 secs -= num*MONTH_INT;
  66                 sprintf(buf, "%d month%s", num, (num>1) ? "s" : "");
  67         }
  68         if (secs >= WEEK_INT) {
  69                 num = secs / WEEK_INT;
  70                 secs -= num*WEEK_INT;
  71                 sprintf(tmp, "%s%d week%s", buf[0] ? ", " : "",
  72                         num, (num>1) ? "s" : "");
  73                 strcat(buf, tmp);
  74         }
  75         if (secs >= DAY_INT) {
  76                 num = secs / DAY_INT;
  77                 secs -= num*DAY_INT;
  78                 sprintf(tmp, "%s%d day%s", buf[0] ? ", " : "",
  79                         num, (num>1) ? "s" : "");
  80                 strcat(buf, tmp);
  81         }
  82         if (secs > 0) {
  83                 hr = secs / HOUR_INT;
  84                 secs -= hr*HOUR_INT;
  85                 min = secs / MINUTE_INT;
  86                 secs -= min*MINUTE_INT;
  87                 sprintf(tmp, "%s%d:%02d:%02d", buf[0] ? ", " : "",
  88                         hr, min, secs);
  89                 strcat(buf, tmp);
  90         }
  91         return buf;
  92 }
  93
  94 static void print_features(struct ext2_super_block * s, FILE *f)
  95 {
  96 #ifdef EXT2_DYNAMIC_REV
  97         int     i, j, printed=0;
  98         __u32   *mask = &s->s_feature_compat, m;
  99
 100         fprintf(f, "Filesystem features:     ");
 101         for (i=0; i <3; i++,mask++) {
 102                 for (j=0,m=1; j < 32; j++, m<<=1) {
 103                         if (*mask & m) {
 104                                 fprintf(f, " %s", e2p_feature2string(i, m));
 105                                 printed++;
 106                         }
 107                 }
 108         }
 109         if (printed == 0)
 110                 fprintf(f, " (none)");
 111         fprintf(f, "\n");
 112 #endif
 113 }
 114
 115 static void print_mntopts(struct ext2_super_block * s, FILE *f)
 116 {
 117 #ifdef EXT2_DYNAMIC_REV
 118         int     i, printed=0;
 119         __u32   mask = s->s_default_mount_opts, m;
 120
 121         fprintf(f, "Default mount options:   ");
 122         if (mask & EXT3_DEFM_JMODE) {
 123                 fprintf(f, " %s", e2p_mntopt2string(mask & EXT3_DEFM_JMODE));
 124                 printed++;
 125         }
 126         for (i=0,m=1; i < 32; i++, m<<=1) {
 127                 if (m & EXT3_DEFM_JMODE)
 128                         continue;
 129                 if (mask & m) {
 130                         fprintf(f, " %s", e2p_mntopt2string(m));
 131                         printed++;
 132                 }
 133         }
 134         if (printed == 0)
 135                 fprintf(f, " (none)");
 136         fprintf(f, "\n");
 137 #endif
 138 }
 139
 140
 141 #ifndef EXT2_INODE_SIZE
 142 #define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
 143 #endif
 144
 145 #ifndef EXT2_GOOD_OLD_REV
 146 #define EXT2_GOOD_OLD_REV 0
 147 #endif
 148
 149 void list_super2(struct ext2_super_block * sb, FILE *f)
 150 {
 151         int inode_blocks_per_group;
 152         char buf[80], *str;
 153         time_t  tm;
 154
 155         inode_blocks_per_group = (((sb->s_inodes_per_group *
 156                                     EXT2_INODE_SIZE(sb)) +
 157                                    EXT2_BLOCK_SIZE(sb) - 1) /
 158                                   EXT2_BLOCK_SIZE(sb));
 159         if (sb->s_volume_name[0]) {
 160                 memset(buf, 0, sizeof(buf));
 161                 strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name));
 162         } else
 163                 strcpy(buf, "<none>");
 164         fprintf(f, "Filesystem volume name:   %s\n", buf);
 165         if (sb->s_last_mounted[0]) {
 166                 memset(buf, 0, sizeof(buf));
 167                 strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted));
 168         } else
 169                 strcpy(buf, "<not available>");
 170         fprintf(f, "Last mounted on:          %s\n", buf);
 171         fprintf(f, "Filesystem UUID:          %s\n", e2p_uuid2str(sb->s_uuid));
 172         fprintf(f, "Filesystem magic number:  0x%04X\n", sb->s_magic);
 173         fprintf(f, "Filesystem revision #:    %d", sb->s_rev_level);
 174         if (sb->s_rev_level == EXT2_GOOD_OLD_REV) {
 175                 fprintf(f, " (original)\n");
 176 #ifdef EXT2_DYNAMIC_REV
 177         } else if (sb->s_rev_level == EXT2_DYNAMIC_REV) {
 178                 fprintf(f, " (dynamic)\n");
 179 #endif
 180         } else
 181                 fprintf(f, " (unknown)\n");
 182         print_features(sb, f);
 183         print_mntopts(sb, f);
 184         fprintf(f, "Filesystem state:        ");
 185         print_fs_state (f, sb->s_state);
 186         fprintf(f, "\n");
 187         fprintf(f, "Errors behavior:          ");
 188         print_fs_errors(f, sb->s_errors);
 189         fprintf(f, "\n");
 190         str = e2p_os2string(sb->s_creator_os);
 191         fprintf(f, "Filesystem OS type:       %s\n", str);
 192         free(str);
 193         fprintf(f, "Inode count:              %u\n", sb->s_inodes_count);
 194         fprintf(f, "Block count:              %u\n", sb->s_blocks_count);
 195         fprintf(f, "Reserved block count:     %u\n", sb->s_r_blocks_count);
 196         fprintf(f, "Free blocks:              %u\n", sb->s_free_blocks_count);
 197         fprintf(f, "Free inodes:              %u\n", sb->s_free_inodes_count);
 198         fprintf(f, "First block:              %u\n", sb->s_first_data_block);
 199         fprintf(f, "Block size:               %u\n", EXT2_BLOCK_SIZE(sb));
 200         fprintf(f, "Fragment size:            %u\n", EXT2_FRAG_SIZE(sb));
 201         if (sb->s_reserved_gdt_blocks)
 202                 fprintf(f, "Reserved GDT blocks:      %u\n",
 203                         sb->s_reserved_gdt_blocks);
 204         fprintf(f, "Blocks per group:         %u\n", sb->s_blocks_per_group);
 205         fprintf(f, "Fragments per group:      %u\n", sb->s_frags_per_group);
 206         fprintf(f, "Inodes per group:         %u\n", sb->s_inodes_per_group);
 207         fprintf(f, "Inode blocks per group:   %u\n", inode_blocks_per_group);
 208         if (sb->s_first_meta_bg)
 209                 fprintf(f, "First meta block group:   %u\n",
 210                         sb->s_first_meta_bg);
 211         if (sb->s_mkfs_time) {
 212                 tm = sb->s_mkfs_time;
 213                 fprintf(f, "Filesystem created:       %s", ctime(&tm));
 214         }
 215         tm = sb->s_mtime;
 216         fprintf(f, "Last mount time:          %s",
 217                 sb->s_mtime ? ctime(&tm) : "n/a\n");
 218         tm = sb->s_wtime;
 219         fprintf(f, "Last write time:          %s", ctime(&tm));
 220         fprintf(f, "Mount count:              %u\n", sb->s_mnt_count);
 221         fprintf(f, "Maximum mount count:      %d\n", sb->s_max_mnt_count);
 222         tm = sb->s_lastcheck;
 223         fprintf(f, "Last checked:             %s", ctime(&tm));
 224         fprintf(f, "Check interval:           %u (%s)\n", sb->s_checkinterval,
 225                interval_string(sb->s_checkinterval));
 226         if (sb->s_checkinterval)
 227         {
 228                 time_t next;
 229
 230                 next = sb->s_lastcheck + sb->s_checkinterval;
 231                 fprintf(f, "Next check after:         %s", ctime(&next));
 232         }
 233         fprintf(f, "Reserved blocks uid:      ");
 234         print_user(sb->s_def_resuid, f);
 235         fprintf(f, "Reserved blocks gid:      ");
 236         print_group(sb->s_def_resgid, f);
 237         if (sb->s_rev_level >= EXT2_DYNAMIC_REV) {
 238                 fprintf(f, "First inode:              %d\n", sb->s_first_ino);
 239                 fprintf(f, "Inode size:           %d\n", sb->s_inode_size);
 240         }
 241         if (!e2p_is_null_uuid(sb->s_journal_uuid))
 242                 fprintf(f, "Journal UUID:             %s\n",
 243                         e2p_uuid2str(sb->s_journal_uuid));
 244         if (sb->s_journal_inum)
 245                 fprintf(f, "Journal inode:            %u\n",
 246                         sb->s_journal_inum);
 247         if (sb->s_journal_dev)
 248                 fprintf(f, "Journal device:               0x%04x\n",
 249                         sb->s_journal_dev);
 250         if (sb->s_last_orphan)
 251                 fprintf(f, "First orphan inode:       %u\n",
 252                         sb->s_last_orphan);
 253         if ((sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) ||
 254             sb->s_def_hash_version)
 255                 fprintf(f, "Default directory hash:   %s\n",
 256                         e2p_hash2string(sb->s_def_hash_version));
 257         if (!e2p_is_null_uuid(sb->s_hash_seed))
 258                 fprintf(f, "Directory Hash Seed:      %s\n",
 259                         e2p_uuid2str(sb->s_hash_seed));
 260         if (sb->s_jnl_backup_type) {
 261                 fprintf(f, "Journal backup:           ");
 262                 switch (sb->s_jnl_backup_type) {
 263                 case 1:
 264                         fprintf(f, "inode blocks\n");
 265                         break;
 266                 default:
 267                         fprintf(f, "type %u\n", sb->s_jnl_backup_type);
 268                 }
 269         }
 270 }
 271
 272 void list_super (struct ext2_super_block * s)
 273 {
 274         list_super2(s, stdout);
 275 }
 276