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  * %Begin-Header%
  11  * This file may be redistributed under the terms of the GNU Library
  12  * General Public License, version 2.
  13  * %End-Header%
  14  */
  15
  16 #include "config.h"
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19 #include <sys/types.h>
  20 #include <string.h>
  21 #include <grp.h>
  22 #include <pwd.h>
  23 #include <time.h>
  24
  25 #include "e2p.h"
  26
  27 static void print_user (unsigned short uid, FILE *f)
  28 {
  29         struct passwd *pw;
  30
  31         fprintf(f, "%u ", uid);
  32         pw = getpwuid (uid);
  33         if (pw == NULL)
  34                 fprintf(f, "(user unknown)\n");
  35         else
  36                 fprintf(f, "(user %s)\n", pw->pw_name);
  37 }
  38
  39 static void print_group (unsigned short gid, FILE *f)
  40 {
  41         struct group *gr;
  42
  43         fprintf(f, "%u ", gid);
  44         gr = getgrgid (gid);
  45         if (gr == NULL)
  46                 fprintf(f, "(group unknown)\n");
  47         else
  48                 fprintf(f, "(group %s)\n", gr->gr_name);
  49 }
  50
  51 #define MONTH_INT (86400 * 30)
  52 #define WEEK_INT (86400 * 7)
  53 #define DAY_INT (86400)
  54 #define HOUR_INT (60 * 60)
  55 #define MINUTE_INT (60)
  56
  57 static const char *interval_string(unsigned int secs)
  58 {
  59         static char buf[256], tmp[80];
  60         int             hr, min, num;
  61
  62         buf[0] = 0;
  63
  64         if (secs == 0)
  65                 return "<none>";
  66
  67         if (secs >= MONTH_INT) {
  68                 num = secs / MONTH_INT;
  69                 secs -= num*MONTH_INT;
  70                 sprintf(buf, "%d month%s", num, (num>1) ? "s" : "");
  71         }
  72         if (secs >= WEEK_INT) {
  73                 num = secs / WEEK_INT;
  74                 secs -= num*WEEK_INT;
  75                 sprintf(tmp, "%s%d week%s", buf[0] ? ", " : "",
  76                         num, (num>1) ? "s" : "");
  77                 strcat(buf, tmp);
  78         }
  79         if (secs >= DAY_INT) {
  80                 num = secs / DAY_INT;
  81                 secs -= num*DAY_INT;
  82                 sprintf(tmp, "%s%d day%s", buf[0] ? ", " : "",
  83                         num, (num>1) ? "s" : "");
  84                 strcat(buf, tmp);
  85         }
  86         if (secs > 0) {
  87                 hr = secs / HOUR_INT;
  88                 secs -= hr*HOUR_INT;
  89                 min = secs / MINUTE_INT;
  90                 secs -= min*MINUTE_INT;
  91                 sprintf(tmp, "%s%d:%02d:%02d", buf[0] ? ", " : "",
  92                         hr, min, secs);
  93                 strcat(buf, tmp);
  94         }
  95         return buf;
  96 }
  97
  98 static void print_features(struct ext2_super_block * s, FILE *f)
  99 {
 100 #ifdef EXT2_DYNAMIC_REV
 101         int     i, j, printed=0;
 102         __u32   *mask = &s->s_feature_compat, m;
 103
 104         fprintf(f, "Filesystem features:     ");
 105         for (i=0; i <3; i++,mask++) {
 106                 for (j=0,m=1; j < 32; j++, m<<=1) {
 107                         if (*mask & m) {
 108                                 fprintf(f, " %s", e2p_feature2string(i, m));
 109                                 printed++;
 110                         }
 111                 }
 112         }
 113         if (printed == 0)
 114                 fprintf(f, " (none)");
 115         fprintf(f, "\n");
 116 #endif
 117 }
 118
 119 static void print_mntopts(struct ext2_super_block * s, FILE *f)
 120 {
 121 #ifdef EXT2_DYNAMIC_REV
 122         int     i, printed=0;
 123         __u32   mask = s->s_default_mount_opts, m;
 124
 125         fprintf(f, "Default mount options:   ");
 126         if (mask & EXT3_DEFM_JMODE) {
 127                 fprintf(f, " %s", e2p_mntopt2string(mask & EXT3_DEFM_JMODE));
 128                 printed++;
 129         }
 130         for (i=0,m=1; i < 32; i++, m<<=1) {
 131                 if (m & EXT3_DEFM_JMODE)
 132                         continue;
 133                 if (mask & m) {
 134                         fprintf(f, " %s", e2p_mntopt2string(m));
 135                         printed++;
 136                 }
 137         }
 138         if (printed == 0)
 139                 fprintf(f, " (none)");
 140         fprintf(f, "\n");
 141 #endif
 142 }
 143
 144 static void print_super_flags(struct ext2_super_block * s, FILE *f)
 145 {
 146         int     flags_found = 0;
 147
 148         if (s->s_flags == 0)
 149                 return;
 150
 151         fputs("Filesystem flags:         ", f);
 152         if (s->s_flags & EXT2_FLAGS_SIGNED_HASH) {
 153                 fputs("signed_directory_hash ", f);
 154                 flags_found++;
 155         }
 156         if (s->s_flags & EXT2_FLAGS_UNSIGNED_HASH) {
 157                 fputs("unsigned_directory_hash ", f);
 158                 flags_found++;
 159         }
 160         if (s->s_flags & EXT2_FLAGS_TEST_FILESYS) {
 161                 fputs("test_filesystem ", f);
 162                 flags_found++;
 163         }
 164         if (flags_found)
 165                 fputs("\n", f);
 166         else
 167                 fputs("(none)\n", f);
 168 }
 169
 170 static __u64 e2p_blocks_count(struct ext2_super_block *super)
 171 {
 172         return super->s_blocks_count |
 173                 (super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT ?
 174                 (__u64) super->s_blocks_count_hi << 32 : 0);
 175 }
 176
 177 static __u64 e2p_r_blocks_count(struct ext2_super_block *super)
 178 {
 179         return super->s_r_blocks_count |
 180                 (super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT ?
 181                 (__u64) super->s_r_blocks_count_hi << 32 : 0);
 182 }
 183
 184 static __u64 e2p_free_blocks_count(struct ext2_super_block *super)
 185 {
 186         return super->s_free_blocks_count |
 187                 (super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT ?
 188                 (__u64) super->s_free_blocks_hi << 32 : 0);
 189 }
 190
 191 #ifndef EXT2_INODE_SIZE
 192 #define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
 193 #endif
 194
 195 #ifndef EXT2_GOOD_OLD_REV
 196 #define EXT2_GOOD_OLD_REV 0
 197 #endif
 198
 199 static const char *checksum_type(__u8 type)
 200 {
 201         switch (type) {
 202         case EXT2_CRC32C_CHKSUM:
 203                 return "crc32c";
 204         default:
 205                 return "unknown";
 206         }
 207 }
 208
 209 void list_super2(struct ext2_super_block * sb, FILE *f)
 210 {
 211         int inode_blocks_per_group;
 212         char buf[80], *str;
 213         time_t  tm;
 214
 215         inode_blocks_per_group = (((sb->s_inodes_per_group *
 216                                     EXT2_INODE_SIZE(sb)) +
 217                                    EXT2_BLOCK_SIZE(sb) - 1) /
 218                                   EXT2_BLOCK_SIZE(sb));
 219         if (sb->s_volume_name[0]) {
 220                 memset(buf, 0, sizeof(buf));
 221                 strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name));
 222         } else
 223                 strcpy(buf, "<none>");
 224         fprintf(f, "Filesystem volume name:   %s\n", buf);
 225         if (sb->s_last_mounted[0]) {
 226                 memset(buf, 0, sizeof(buf));
 227                 strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted));
 228         } else
 229                 strcpy(buf, "<not available>");
 230         fprintf(f, "Last mounted on:          %s\n", buf);
 231         fprintf(f, "Filesystem UUID:          %s\n", e2p_uuid2str(sb->s_uuid));
 232         fprintf(f, "Filesystem magic number:  0x%04X\n", sb->s_magic);
 233         fprintf(f, "Filesystem revision #:    %d", sb->s_rev_level);
 234         if (sb->s_rev_level == EXT2_GOOD_OLD_REV) {
 235                 fprintf(f, " (original)\n");
 236 #ifdef EXT2_DYNAMIC_REV
 237         } else if (sb->s_rev_level == EXT2_DYNAMIC_REV) {
 238                 fprintf(f, " (dynamic)\n");
 239 #endif
 240         } else
 241                 fprintf(f, " (unknown)\n");
 242         print_features(sb, f);
 243         print_super_flags(sb, f);
 244         print_mntopts(sb, f);
 245         if (sb->s_mount_opts[0])
 246                 fprintf(f, "Mount options:            %s\n", sb->s_mount_opts);
 247         fprintf(f, "Filesystem state:        ");
 248         print_fs_state (f, sb->s_state);
 249         fprintf(f, "\n");
 250         fprintf(f, "Errors behavior:          ");
 251         print_fs_errors(f, sb->s_errors);
 252         fprintf(f, "\n");
 253         str = e2p_os2string(sb->s_creator_os);
 254         fprintf(f, "Filesystem OS type:       %s\n", str);
 255         free(str);
 256         fprintf(f, "Inode count:              %u\n", sb->s_inodes_count);
 257         fprintf(f, "Block count:              %llu\n", e2p_blocks_count(sb));
 258         fprintf(f, "Reserved block count:     %llu\n", e2p_r_blocks_count(sb));
 259         if (sb->s_overhead_blocks)
 260                 fprintf(f, "Overhead blocks:          %u\n",
 261                         sb->s_overhead_blocks);
 262         fprintf(f, "Free blocks:              %llu\n", e2p_free_blocks_count(sb));
 263         fprintf(f, "Free inodes:              %u\n", sb->s_free_inodes_count);
 264         fprintf(f, "First block:              %u\n", sb->s_first_data_block);
 265         fprintf(f, "Block size:               %u\n", EXT2_BLOCK_SIZE(sb));
 266         if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_BIGALLOC)
 267                 fprintf(f, "Cluster size:             %u\n",
 268                         EXT2_CLUSTER_SIZE(sb));
 269         else
 270                 fprintf(f, "Fragment size:            %u\n",
 271                         EXT2_CLUSTER_SIZE(sb));
 272         if (sb->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT)
 273                 fprintf(f, "Group descriptor size:    %u\n", sb->s_desc_size);
 274         if (sb->s_reserved_gdt_blocks)
 275                 fprintf(f, "Reserved GDT blocks:      %u\n",
 276                         sb->s_reserved_gdt_blocks);
 277         fprintf(f, "Blocks per group:         %u\n", sb->s_blocks_per_group);
 278         if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_BIGALLOC)
 279                 fprintf(f, "Clusters per group:       %u\n",
 280                         sb->s_clusters_per_group);
 281         else
 282                 fprintf(f, "Fragments per group:      %u\n",
 283                         sb->s_clusters_per_group);
 284         fprintf(f, "Inodes per group:         %u\n", sb->s_inodes_per_group);
 285         fprintf(f, "Inode blocks per group:   %u\n", inode_blocks_per_group);
 286         if (sb->s_raid_stride)
 287                 fprintf(f, "RAID stride:              %u\n",
 288                         sb->s_raid_stride);
 289         if (sb->s_raid_stripe_width)
 290                 fprintf(f, "RAID stripe width:        %u\n",
 291                         sb->s_raid_stripe_width);
 292         if (sb->s_first_meta_bg)
 293                 fprintf(f, "First meta block group:   %u\n",
 294                         sb->s_first_meta_bg);
 295         if (sb->s_log_groups_per_flex)
 296                 fprintf(f, "Flex block group size:    %u\n",
 297                         1 << sb->s_log_groups_per_flex);
 298         if (sb->s_mkfs_time) {
 299                 tm = sb->s_mkfs_time;
 300                 fprintf(f, "Filesystem created:       %s", ctime(&tm));
 301         }
 302         tm = sb->s_mtime;
 303         fprintf(f, "Last mount time:          %s",
 304                 sb->s_mtime ? ctime(&tm) : "n/a\n");
 305         tm = sb->s_wtime;
 306         fprintf(f, "Last write time:          %s", ctime(&tm));
 307         fprintf(f, "Mount count:              %u\n", sb->s_mnt_count);
 308         fprintf(f, "Maximum mount count:      %d\n", sb->s_max_mnt_count);
 309         tm = sb->s_lastcheck;
 310         fprintf(f, "Last checked:             %s", ctime(&tm));
 311         fprintf(f, "Check interval:           %u (%s)\n", sb->s_checkinterval,
 312                interval_string(sb->s_checkinterval));
 313         if (sb->s_checkinterval)
 314         {
 315                 time_t next;
 316
 317                 next = sb->s_lastcheck + sb->s_checkinterval;
 318                 fprintf(f, "Next check after:         %s", ctime(&next));
 319         }
 320 #define POW2(x) ((__u64) 1 << (x))
 321         if (sb->s_kbytes_written) {
 322                 fprintf(f, "Lifetime writes:          ");
 323                 if (sb->s_kbytes_written < POW2(13))
 324                         fprintf(f, "%llu kB\n", sb->s_kbytes_written);
 325                 else if (sb->s_kbytes_written < POW2(23))
 326                         fprintf(f, "%llu MB\n",
 327                                 (sb->s_kbytes_written + POW2(9)) >> 10);
 328                 else if (sb->s_kbytes_written < POW2(33))
 329                         fprintf(f, "%llu GB\n",
 330                                 (sb->s_kbytes_written + POW2(19)) >> 20);
 331                 else if (sb->s_kbytes_written < POW2(43))
 332                         fprintf(f, "%llu TB\n",
 333                                 (sb->s_kbytes_written + POW2(29)) >> 30);
 334                 else
 335                         fprintf(f, "%llu PB\n",
 336                                 (sb->s_kbytes_written + POW2(39)) >> 40);
 337         }
 338         fprintf(f, "Reserved blocks uid:      ");
 339         print_user(sb->s_def_resuid, f);
 340         fprintf(f, "Reserved blocks gid:      ");
 341         print_group(sb->s_def_resgid, f);
 342         if (sb->s_rev_level >= EXT2_DYNAMIC_REV) {
 343                 fprintf(f, "First inode:              %d\n", sb->s_first_ino);
 344                 fprintf(f, "Inode size:           %d\n", sb->s_inode_size);
 345                 if (sb->s_min_extra_isize)
 346                         fprintf(f, "Required extra isize:     %d\n",
 347                                 sb->s_min_extra_isize);
 348                 if (sb->s_want_extra_isize)
 349                         fprintf(f, "Desired extra isize:      %d\n",
 350                                 sb->s_want_extra_isize);
 351         }
 352         if (!e2p_is_null_uuid(sb->s_journal_uuid))
 353                 fprintf(f, "Journal UUID:             %s\n",
 354                         e2p_uuid2str(sb->s_journal_uuid));
 355         if (sb->s_journal_inum)
 356                 fprintf(f, "Journal inode:            %u\n",
 357                         sb->s_journal_inum);
 358         if (sb->s_journal_dev)
 359                 fprintf(f, "Journal device:               0x%04x\n",
 360                         sb->s_journal_dev);
 361         if (sb->s_last_orphan)
 362                 fprintf(f, "First orphan inode:       %u\n",
 363                         sb->s_last_orphan);
 364         if ((sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) ||
 365             sb->s_def_hash_version)
 366                 fprintf(f, "Default directory hash:   %s\n",
 367                         e2p_hash2string(sb->s_def_hash_version));
 368         if (!e2p_is_null_uuid(sb->s_hash_seed))
 369                 fprintf(f, "Directory Hash Seed:      %s\n",
 370                         e2p_uuid2str(sb->s_hash_seed));
 371         if (sb->s_jnl_backup_type) {
 372                 fprintf(f, "Journal backup:           ");
 373                 switch (sb->s_jnl_backup_type) {
 374                 case 1:
 375                         fprintf(f, "inode blocks\n");
 376                         break;
 377                 default:
 378                         fprintf(f, "type %u\n", sb->s_jnl_backup_type);
 379                 }
 380         }
 381         if (sb->s_backup_bgs[0] || sb->s_backup_bgs[1]) {
 382                 fprintf(f, "Backup block groups:      ");
 383                 if (sb->s_backup_bgs[0])
 384                         fprintf(f, "%u ", sb->s_backup_bgs[0]);
 385                 if (sb->s_backup_bgs[1])
 386                         fprintf(f, "%u ", sb->s_backup_bgs[1]);
 387                 fputc('\n', f);
 388         }
 389         if (sb->s_snapshot_inum) {
 390                 fprintf(f, "Snapshot inode:           %u\n",
 391                         sb->s_snapshot_inum);
 392                 fprintf(f, "Snapshot ID:              %u\n",
 393                         sb->s_snapshot_id);
 394                 fprintf(f, "Snapshot reserved blocks: %llu\n",
 395                         sb->s_snapshot_r_blocks_count);
 396         }
 397         if (sb->s_snapshot_list)
 398                 fprintf(f, "Snapshot list head:       %u\n",
 399                         sb->s_snapshot_list);
 400         if (sb->s_error_count)
 401                 fprintf(f, "FS Error count:           %u\n",
 402                         sb->s_error_count);
 403         if (sb->s_first_error_time) {
 404                 tm = sb->s_first_error_time;
 405                 fprintf(f, "First error time:         %s", ctime(&tm));
 406                 memset(buf, 0, sizeof(buf));
 407                 strncpy(buf, (char *)sb->s_first_error_func,
 408                         sizeof(sb->s_first_error_func));
 409                 fprintf(f, "First error function:     %s\n", buf);
 410                 fprintf(f, "First error line #:       %u\n",
 411                         sb->s_first_error_line);
 412                 fprintf(f, "First error inode #:      %u\n",
 413                         sb->s_first_error_ino);
 414                 fprintf(f, "First error block #:      %llu\n",
 415                         sb->s_first_error_block);
 416         }
 417         if (sb->s_last_error_time) {
 418                 tm = sb->s_last_error_time;
 419                 fprintf(f, "Last error time:          %s", ctime(&tm));
 420                 memset(buf, 0, sizeof(buf));
 421                 strncpy(buf, (char *)sb->s_last_error_func,
 422                         sizeof(sb->s_last_error_func));
 423                 fprintf(f, "Last error function:      %s\n", buf);
 424                 fprintf(f, "Last error line #:        %u\n",
 425                         sb->s_last_error_line);
 426                 fprintf(f, "Last error inode #:       %u\n",
 427                         sb->s_last_error_ino);
 428                 fprintf(f, "Last error block #:       %llu\n",
 429                         sb->s_last_error_block);
 430         }
 431         if (sb->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) {
 432                 fprintf(f, "MMP block number:         %llu\n",
 433                         (long long)sb->s_mmp_block);
 434                 fprintf(f, "MMP update interval:      %u\n",
 435                         sb->s_mmp_update_interval);
 436         }
 437         if (sb->s_usr_quota_inum)
 438                 fprintf(f, "User quota inode:         %u\n",
 439                         sb->s_usr_quota_inum);
 440         if (sb->s_grp_quota_inum)
 441                 fprintf(f, "Group quota inode:        %u\n",
 442                         sb->s_grp_quota_inum);
 443
 444         if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) {
 445                 fprintf(f, "Checksum type:            %s\n",
 446                         checksum_type(sb->s_checksum_type));
 447                 fprintf(f, "Checksum:                 0x%08x\n",
 448                         sb->s_checksum);
 449         }
 450         if (!e2p_is_null_uuid(sb->s_encrypt_pw_salt))
 451                 fprintf(f, "Encryption PW Salt:       %s\n",
 452                         e2p_uuid2str(sb->s_encrypt_pw_salt));
 453 }
 454
 455 void list_super (struct ext2_super_block * s)
 456 {
 457         list_super2(s, stdout);
 458 }
 459