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