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 <stdlib.h>
  16 #include <sys/types.h>
  17 #include <string.h>
  18 #include <grp.h>
  19 #include <pwd.h>
  20 #include <time.h>
  21
  22 #include "e2p.h"
  23
  24 static void print_user (unsigned short uid, FILE *f)
  25 {
  26         struct passwd *pw;
  27
  28         fprintf(f, "%u ", uid);
  29         pw = getpwuid (uid);
  30         if (pw == NULL)
  31                 fprintf(f, "(user unknown)\n");
  32         else
  33                 fprintf(f, "(user %s)\n", pw->pw_name);
  34 }
  35
  36 static void print_group (unsigned short gid, FILE *f)
  37 {
  38         struct group *gr;
  39
  40         fprintf(f, "%u ", gid);
  41         gr = getgrgid (gid);
  42         if (gr == NULL)
  43                 fprintf(f, "(group unknown)\n");
  44         else
  45                 fprintf(f, "(group %s)\n", gr->gr_name);
  46 }
  47
  48 #define MONTH_INT (86400 * 30)
  49 #define WEEK_INT (86400 * 7)
  50 #define DAY_INT (86400)
  51 #define HOUR_INT (60 * 60)
  52 #define MINUTE_INT (60)
  53
  54 static const char *interval_string(unsigned int secs)
  55 {
  56         static char buf[256], tmp[80];
  57         int             hr, min, num;
  58
  59         buf[0] = 0;
  60
  61         if (secs == 0)
  62                 return "<none>";
  63
  64         if (secs >= MONTH_INT) {
  65                 num = secs / MONTH_INT;
  66                 secs -= num*MONTH_INT;
  67                 sprintf(buf, "%d month%s", num, (num>1) ? "s" : "");
  68         }
  69         if (secs >= WEEK_INT) {
  70                 num = secs / WEEK_INT;
  71                 secs -= num*WEEK_INT;
  72                 sprintf(tmp, "%s%d week%s", buf[0] ? ", " : "",
  73                         num, (num>1) ? "s" : "");
  74                 strcat(buf, tmp);
  75         }
  76         if (secs >= DAY_INT) {
  77                 num = secs / DAY_INT;
  78                 secs -= num*DAY_INT;
  79                 sprintf(tmp, "%s%d day%s", buf[0] ? ", " : "",
  80                         num, (num>1) ? "s" : "");
  81                 strcat(buf, tmp);
  82         }
  83         if (secs > 0) {
  84                 hr = secs / HOUR_INT;
  85                 secs -= hr*HOUR_INT;
  86                 min = secs / MINUTE_INT;
  87                 secs -= min*MINUTE_INT;
  88                 sprintf(tmp, "%s%d:%02d:%02d", buf[0] ? ", " : "",
  89                         hr, min, secs);
  90                 strcat(buf, tmp);
  91         }
  92         return buf;
  93 }
  94
  95 static void print_features(struct ext2_super_block * s, FILE *f)
  96 {
  97 #ifdef EXT2_DYNAMIC_REV
  98         int     i, j, printed=0;
  99         __u32   *mask = &s->s_feature_compat, m;
 100
 101         fprintf(f, "Filesystem features:     ");
 102         for (i=0; i <3; i++,mask++) {
 103                 for (j=0,m=1; j < 32; j++, m<<=1) {
 104                         if (*mask & m) {
 105                                 fprintf(f, " %s", e2p_feature2string(i, m));
 106                                 printed++;
 107                         }
 108                 }
 109         }
 110         if (printed == 0)
 111                 fprintf(f, " (none)");
 112         fprintf(f, "\n");
 113 #endif
 114 }
 115
 116 static void print_mntopts(struct ext2_super_block * s, FILE *f)
 117 {
 118 #ifdef EXT2_DYNAMIC_REV
 119         int     i, printed=0;
 120         __u32   mask = s->s_default_mount_opts, m;
 121
 122         fprintf(f, "Default mount options:   ");
 123         if (mask & EXT3_DEFM_JMODE) {
 124                 fprintf(f, " %s", e2p_mntopt2string(mask & EXT3_DEFM_JMODE));
 125                 printed++;
 126         }
 127         for (i=0,m=1; i < 32; i++, m<<=1) {
 128                 if (m & EXT3_DEFM_JMODE)
 129                         continue;
 130                 if (mask & m) {
 131                         fprintf(f, " %s", e2p_mntopt2string(m));
 132                         printed++;
 133                 }
 134         }
 135         if (printed == 0)
 136                 fprintf(f, " (none)");
 137         fprintf(f, "\n");
 138 #endif
 139 }
 140
 141 static void print_super_flags(struct ext2_super_block * s, FILE *f)
 142 {
 143         int     flags_found = 0;
 144
 145         if (s->s_flags == 0)
 146                 return;
 147
 148         fputs("Filesystem flags:         ", f);
 149         if (s->s_flags & EXT2_FLAGS_SIGNED_HASH) {
 150                 fputs("signed_directory_hash ", f);
 151                 flags_found++;
 152         }
 153         if (s->s_flags & EXT2_FLAGS_UNSIGNED_HASH) {
 154                 fputs("unsigned_directory_hash ", f);
 155                 flags_found++;
 156         }
 157         if (s->s_flags & EXT2_FLAGS_TEST_FILESYS) {
 158                 fputs("test_filesystem ", f);
 159                 flags_found++;
 160         }
 161         if (flags_found)
 162                 fputs("\n", f);
 163         else
 164                 fputs("(none)\n", f);
 165 }
 166
 167
 168 #ifndef EXT2_INODE_SIZE
 169 #define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
 170 #endif
 171
 172 #ifndef EXT2_GOOD_OLD_REV
 173 #define EXT2_GOOD_OLD_REV 0
 174 #endif
 175
 176 void list_super2(struct ext2_super_block * sb, FILE *f)
 177 {
 178         int inode_blocks_per_group;
 179         char buf[80], *str;
 180         time_t  tm;
 181
 182         inode_blocks_per_group = (((sb->s_inodes_per_group *
 183                                     EXT2_INODE_SIZE(sb)) +
 184                                    EXT2_BLOCK_SIZE(sb) - 1) /
 185                                   EXT2_BLOCK_SIZE(sb));
 186         if (sb->s_volume_name[0]) {
 187                 memset(buf, 0, sizeof(buf));
 188                 strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name));
 189         } else
 190                 strcpy(buf, "<none>");
 191         fprintf(f, "Filesystem volume name:   %s\n", buf);
 192         if (sb->s_last_mounted[0]) {
 193                 memset(buf, 0, sizeof(buf));
 194                 strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted));
 195         } else
 196                 strcpy(buf, "<not available>");
 197         fprintf(f, "Last mounted on:          %s\n", buf);
 198         fprintf(f, "Filesystem UUID:          %s\n", e2p_uuid2str(sb->s_uuid));
 199         fprintf(f, "Filesystem magic number:  0x%04X\n", sb->s_magic);
 200         fprintf(f, "Filesystem revision #:    %d", sb->s_rev_level);
 201         if (sb->s_rev_level == EXT2_GOOD_OLD_REV) {
 202                 fprintf(f, " (original)\n");
 203 #ifdef EXT2_DYNAMIC_REV
 204         } else if (sb->s_rev_level == EXT2_DYNAMIC_REV) {
 205                 fprintf(f, " (dynamic)\n");
 206 #endif
 207         } else
 208                 fprintf(f, " (unknown)\n");
 209         print_features(sb, f);
 210         print_super_flags(sb, f);
 211         print_mntopts(sb, f);
 212         fprintf(f, "Filesystem state:        ");
 213         print_fs_state (f, sb->s_state);
 214         fprintf(f, "\n");
 215         fprintf(f, "Errors behavior:          ");
 216         print_fs_errors(f, sb->s_errors);
 217         fprintf(f, "\n");
 218         str = e2p_os2string(sb->s_creator_os);
 219         fprintf(f, "Filesystem OS type:       %s\n", str);
 220         free(str);
 221         fprintf(f, "Inode count:              %u\n", sb->s_inodes_count);
 222         fprintf(f, "Block count:              %u\n", sb->s_blocks_count);
 223         fprintf(f, "Reserved block count:     %u\n", sb->s_r_blocks_count);
 224         fprintf(f, "Free blocks:              %u\n", sb->s_free_blocks_count);
 225         fprintf(f, "Free inodes:              %u\n", sb->s_free_inodes_count);
 226         fprintf(f, "First block:              %u\n", sb->s_first_data_block);
 227         fprintf(f, "Block size:               %u\n", EXT2_BLOCK_SIZE(sb));
 228         fprintf(f, "Fragment size:            %u\n", EXT2_FRAG_SIZE(sb));
 229         if (sb->s_reserved_gdt_blocks)
 230                 fprintf(f, "Reserved GDT blocks:      %u\n",
 231                         sb->s_reserved_gdt_blocks);
 232         fprintf(f, "Blocks per group:         %u\n", sb->s_blocks_per_group);
 233         fprintf(f, "Fragments per group:      %u\n", sb->s_frags_per_group);
 234         fprintf(f, "Inodes per group:         %u\n", sb->s_inodes_per_group);
 235         fprintf(f, "Inode blocks per group:   %u\n", inode_blocks_per_group);
 236         if (sb->s_raid_stride)
 237                 fprintf(f, "RAID stride:              %u\n",
 238                         sb->s_raid_stride);
 239         if (sb->s_raid_stripe_width)
 240                 fprintf(f, "RAID stripe width:        %u\n",
 241                         sb->s_raid_stripe_width);
 242         if (sb->s_first_meta_bg)
 243                 fprintf(f, "First meta block group:   %u\n",
 244                         sb->s_first_meta_bg);
 245         if (sb->s_log_groups_per_flex)
 246                 fprintf(f, "Flex block group size:    %u\n",
 247                         1 << sb->s_log_groups_per_flex);
 248         if (sb->s_mkfs_time) {
 249                 tm = sb->s_mkfs_time;
 250                 fprintf(f, "Filesystem created:       %s", ctime(&tm));
 251         }
 252         tm = sb->s_mtime;
 253         fprintf(f, "Last mount time:          %s",
 254                 sb->s_mtime ? ctime(&tm) : "n/a\n");
 255         tm = sb->s_wtime;
 256         fprintf(f, "Last write time:          %s", ctime(&tm));
 257         fprintf(f, "Mount count:              %u\n", sb->s_mnt_count);
 258         fprintf(f, "Maximum mount count:      %d\n", sb->s_max_mnt_count);
 259         tm = sb->s_lastcheck;
 260         fprintf(f, "Last checked:             %s", ctime(&tm));
 261         fprintf(f, "Check interval:           %u (%s)\n", sb->s_checkinterval,
 262                interval_string(sb->s_checkinterval));
 263         if (sb->s_checkinterval)
 264         {
 265                 time_t next;
 266
 267                 next = sb->s_lastcheck + sb->s_checkinterval;
 268                 fprintf(f, "Next check after:         %s", ctime(&next));
 269         }
 270         fprintf(f, "Reserved blocks uid:      ");
 271         print_user(sb->s_def_resuid, f);
 272         fprintf(f, "Reserved blocks gid:      ");
 273         print_group(sb->s_def_resgid, f);
 274         if (sb->s_rev_level >= EXT2_DYNAMIC_REV) {
 275                 fprintf(f, "First inode:              %d\n", sb->s_first_ino);
 276                 fprintf(f, "Inode size:           %d\n", sb->s_inode_size);
 277                 if (sb->s_min_extra_isize)
 278                         fprintf(f, "Required extra isize:     %d\n",
 279                                 sb->s_min_extra_isize);
 280                 if (sb->s_want_extra_isize)
 281                         fprintf(f, "Desired extra isize:      %d\n",
 282                                 sb->s_want_extra_isize);
 283         }
 284         if (!e2p_is_null_uuid(sb->s_journal_uuid))
 285                 fprintf(f, "Journal UUID:             %s\n",
 286                         e2p_uuid2str(sb->s_journal_uuid));
 287         if (sb->s_journal_inum)
 288                 fprintf(f, "Journal inode:            %u\n",
 289                         sb->s_journal_inum);
 290         if (sb->s_journal_dev)
 291                 fprintf(f, "Journal device:               0x%04x\n",
 292                         sb->s_journal_dev);
 293         if (sb->s_last_orphan)
 294                 fprintf(f, "First orphan inode:       %u\n",
 295                         sb->s_last_orphan);
 296         if ((sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) ||
 297             sb->s_def_hash_version)
 298                 fprintf(f, "Default directory hash:   %s\n",
 299                         e2p_hash2string(sb->s_def_hash_version));
 300         if (!e2p_is_null_uuid(sb->s_hash_seed))
 301                 fprintf(f, "Directory Hash Seed:      %s\n",
 302                         e2p_uuid2str(sb->s_hash_seed));
 303         if (sb->s_jnl_backup_type) {
 304                 fprintf(f, "Journal backup:           ");
 305                 switch (sb->s_jnl_backup_type) {
 306                 case 1:
 307                         fprintf(f, "inode blocks\n");
 308                         break;
 309                 default:
 310                         fprintf(f, "type %u\n", sb->s_jnl_backup_type);
 311                 }
 312         }
 313 }
 314
 315 void list_super (struct ext2_super_block * s)
 316 {
 317         list_super2(s, stdout);
 318 }
 319