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 #include "support/quotaio.h"
  27
  28 static void print_user (unsigned short uid, FILE *f)
  29 {
  30         struct passwd *pw;
  31
  32         fprintf(f, "%u ", uid);
  33         pw = getpwuid (uid);
  34         if (pw == NULL)
  35                 fprintf(f, "(user unknown)\n");
  36         else
  37                 fprintf(f, "(user %s)\n", pw->pw_name);
  38 }
  39
  40 static void print_group (unsigned short gid, FILE *f)
  41 {
  42         struct group *gr;
  43
  44         fprintf(f, "%u ", gid);
  45         gr = getgrgid (gid);
  46         if (gr == NULL)
  47                 fprintf(f, "(group unknown)\n");
  48         else
  49                 fprintf(f, "(group %s)\n", gr->gr_name);
  50 }
  51
  52 #define MONTH_INT (86400 * 30)
  53 #define WEEK_INT (86400 * 7)
  54 #define DAY_INT (86400)
  55 #define HOUR_INT (60 * 60)
  56 #define MINUTE_INT (60)
  57
  58 static const char *interval_string(unsigned int secs)
  59 {
  60         static char buf[256], tmp[80];
  61         int             hr, min, num;
  62
  63         buf[0] = 0;
  64
  65         if (secs == 0)
  66                 return "<none>";
  67
  68         if (secs >= MONTH_INT) {
  69                 num = secs / MONTH_INT;
  70                 secs -= num*MONTH_INT;
  71                 sprintf(buf, "%d month%s", num, (num>1) ? "s" : "");
  72         }
  73         if (secs >= WEEK_INT) {
  74                 num = secs / WEEK_INT;
  75                 secs -= num*WEEK_INT;
  76                 sprintf(tmp, "%s%d week%s", buf[0] ? ", " : "",
  77                         num, (num>1) ? "s" : "");
  78                 strcat(buf, tmp);
  79         }
  80         if (secs >= DAY_INT) {
  81                 num = secs / DAY_INT;
  82                 secs -= num*DAY_INT;
  83                 sprintf(tmp, "%s%d day%s", buf[0] ? ", " : "",
  84                         num, (num>1) ? "s" : "");
  85                 strcat(buf, tmp);
  86         }
  87         if (secs > 0) {
  88                 hr = secs / HOUR_INT;
  89                 secs -= hr*HOUR_INT;
  90                 min = secs / MINUTE_INT;
  91                 secs -= min*MINUTE_INT;
  92                 sprintf(tmp, "%s%d:%02d:%02d", buf[0] ? ", " : "",
  93                         hr, min, secs);
  94                 strcat(buf, tmp);
  95         }
  96         return buf;
  97 }
  98
  99 static void print_features(struct ext2_super_block * s, FILE *f)
 100 {
 101 #ifdef EXT2_DYNAMIC_REV
 102         int     i, j, printed=0;
 103         __u32   *mask = &s->s_feature_compat, m;
 104
 105         fprintf(f, "Filesystem features:     ");
 106         for (i=0; i <3; i++,mask++) {
 107                 for (j=0,m=1; j < 32; j++, m<<=1) {
 108                         if (*mask & m) {
 109                                 fprintf(f, " %s", e2p_feature2string(i, m));
 110                                 printed++;
 111                         }
 112                 }
 113         }
 114         if (printed == 0)
 115                 fprintf(f, " (none)");
 116         fprintf(f, "\n");
 117 #endif
 118 }
 119
 120 static void print_mntopts(struct ext2_super_block * s, FILE *f)
 121 {
 122 #ifdef EXT2_DYNAMIC_REV
 123         int     i, printed=0;
 124         __u32   mask = s->s_default_mount_opts, m;
 125
 126         fprintf(f, "Default mount options:   ");
 127         if (mask & EXT3_DEFM_JMODE) {
 128                 fprintf(f, " %s", e2p_mntopt2string(mask & EXT3_DEFM_JMODE));
 129                 printed++;
 130         }
 131         for (i=0,m=1; i < 32; i++, m<<=1) {
 132                 if (m & EXT3_DEFM_JMODE)
 133                         continue;
 134                 if (mask & m) {
 135                         fprintf(f, " %s", e2p_mntopt2string(m));
 136                         printed++;
 137                 }
 138         }
 139         if (printed == 0)
 140                 fprintf(f, " (none)");
 141         fprintf(f, "\n");
 142 #endif
 143 }
 144
 145 static void print_super_flags(struct ext2_super_block * s, FILE *f)
 146 {
 147         int     flags_found = 0;
 148
 149         if (s->s_flags == 0)
 150                 return;
 151
 152         fputs("Filesystem flags:         ", f);
 153         if (s->s_flags & EXT2_FLAGS_SIGNED_HASH) {
 154                 fputs("signed_directory_hash ", f);
 155                 flags_found++;
 156         }
 157         if (s->s_flags & EXT2_FLAGS_UNSIGNED_HASH) {
 158                 fputs("unsigned_directory_hash ", f);
 159                 flags_found++;
 160         }
 161         if (s->s_flags & EXT2_FLAGS_TEST_FILESYS) {
 162                 fputs("test_filesystem ", f);
 163                 flags_found++;
 164         }
 165         if (flags_found)
 166                 fputs("\n", f);
 167         else
 168                 fputs("(none)\n", f);
 169 }
 170
 171 static __u64 e2p_blocks_count(struct ext2_super_block *super)
 172 {
 173         return super->s_blocks_count |
 174                 (ext2fs_has_feature_64bit(super) ?
 175                 (__u64) super->s_blocks_count_hi << 32 : 0);
 176 }
 177
 178 static __u64 e2p_r_blocks_count(struct ext2_super_block *super)
 179 {
 180         return super->s_r_blocks_count |
 181                 (ext2fs_has_feature_64bit(super) ?
 182                 (__u64) super->s_r_blocks_count_hi << 32 : 0);
 183 }
 184
 185 static __u64 e2p_free_blocks_count(struct ext2_super_block *super)
 186 {
 187         return super->s_free_blocks_count |
 188                 (ext2fs_has_feature_64bit(super) ?
 189                 (__u64) super->s_free_blocks_hi << 32 : 0);
 190 }
 191
 192 #ifndef EXT2_INODE_SIZE
 193 #define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
 194 #endif
 195
 196 #ifndef EXT2_GOOD_OLD_REV
 197 #define EXT2_GOOD_OLD_REV 0
 198 #endif
 199
 200 static const char *checksum_type(__u8 type)
 201 {
 202         switch (type) {
 203         case EXT2_CRC32C_CHKSUM:
 204                 return "crc32c";
 205         default:
 206                 return "unknown";
 207         }
 208 }
 209
 210 static const char *quota_prefix[MAXQUOTAS] = {
 211         [USRQUOTA] = "User quota inode:",
 212         [GRPQUOTA] = "Group quota inode:",
 213 };
 214
 215 /**
 216  * Convert type of quota to written representation
 217  */
 218 static const char *quota_type2prefix(enum quota_type qtype)
 219 {
 220         return quota_prefix[qtype];
 221 }
 222
 223 void list_super2(struct ext2_super_block * sb, FILE *f)
 224 {
 225         int inode_blocks_per_group;
 226         char buf[80], *str;
 227         time_t  tm;
 228         enum quota_type qtype;
 229
 230         inode_blocks_per_group = (((sb->s_inodes_per_group *
 231                                     EXT2_INODE_SIZE(sb)) +
 232                                    EXT2_BLOCK_SIZE(sb) - 1) /
 233                                   EXT2_BLOCK_SIZE(sb));
 234         if (sb->s_volume_name[0]) {
 235                 memset(buf, 0, sizeof(buf));
 236                 strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name));
 237         } else
 238                 strcpy(buf, "<none>");
 239         fprintf(f, "Filesystem volume name:   %s\n", buf);
 240         if (sb->s_last_mounted[0]) {
 241                 memset(buf, 0, sizeof(buf));
 242                 strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted));
 243         } else
 244                 strcpy(buf, "<not available>");
 245         fprintf(f, "Last mounted on:          %s\n", buf);
 246         fprintf(f, "Filesystem UUID:          %s\n", e2p_uuid2str(sb->s_uuid));
 247         fprintf(f, "Filesystem magic number:  0x%04X\n", sb->s_magic);
 248         fprintf(f, "Filesystem revision #:    %d", sb->s_rev_level);
 249         if (sb->s_rev_level == EXT2_GOOD_OLD_REV) {
 250                 fprintf(f, " (original)\n");
 251 #ifdef EXT2_DYNAMIC_REV
 252         } else if (sb->s_rev_level == EXT2_DYNAMIC_REV) {
 253                 fprintf(f, " (dynamic)\n");
 254 #endif
 255         } else
 256                 fprintf(f, " (unknown)\n");
 257         print_features(sb, f);
 258         print_super_flags(sb, f);
 259         print_mntopts(sb, f);
 260         if (sb->s_mount_opts[0])
 261                 fprintf(f, "Mount options:            %s\n", sb->s_mount_opts);
 262         fprintf(f, "Filesystem state:        ");
 263         print_fs_state (f, sb->s_state);
 264         fprintf(f, "\n");
 265         fprintf(f, "Errors behavior:          ");
 266         print_fs_errors(f, sb->s_errors);
 267         fprintf(f, "\n");
 268         str = e2p_os2string(sb->s_creator_os);
 269         fprintf(f, "Filesystem OS type:       %s\n", str);
 270         free(str);
 271         fprintf(f, "Inode count:              %u\n", sb->s_inodes_count);
 272         fprintf(f, "Block count:              %llu\n", e2p_blocks_count(sb));
 273         fprintf(f, "Reserved block count:     %llu\n", e2p_r_blocks_count(sb));
 274         if (sb->s_overhead_blocks)
 275                 fprintf(f, "Overhead blocks:          %u\n",
 276                         sb->s_overhead_blocks);
 277         fprintf(f, "Free blocks:              %llu\n", e2p_free_blocks_count(sb));
 278         fprintf(f, "Free inodes:              %u\n", sb->s_free_inodes_count);
 279         fprintf(f, "First block:              %u\n", sb->s_first_data_block);
 280         fprintf(f, "Block size:               %u\n", EXT2_BLOCK_SIZE(sb));
 281         if (ext2fs_has_feature_bigalloc(sb))
 282                 fprintf(f, "Cluster size:             %u\n",
 283                         EXT2_CLUSTER_SIZE(sb));
 284         else
 285                 fprintf(f, "Fragment size:            %u\n",
 286                         EXT2_CLUSTER_SIZE(sb));
 287         if (ext2fs_has_feature_64bit(sb))
 288                 fprintf(f, "Group descriptor size:    %u\n", sb->s_desc_size);
 289         if (sb->s_reserved_gdt_blocks)
 290                 fprintf(f, "Reserved GDT blocks:      %u\n",
 291                         sb->s_reserved_gdt_blocks);
 292         fprintf(f, "Blocks per group:         %u\n", sb->s_blocks_per_group);
 293         if (ext2fs_has_feature_bigalloc(sb))
 294                 fprintf(f, "Clusters per group:       %u\n",
 295                         sb->s_clusters_per_group);
 296         else
 297                 fprintf(f, "Fragments per group:      %u\n",
 298                         sb->s_clusters_per_group);
 299         fprintf(f, "Inodes per group:         %u\n", sb->s_inodes_per_group);
 300         fprintf(f, "Inode blocks per group:   %u\n", inode_blocks_per_group);
 301         if (sb->s_raid_stride)
 302                 fprintf(f, "RAID stride:              %u\n",
 303                         sb->s_raid_stride);
 304         if (sb->s_raid_stripe_width)
 305                 fprintf(f, "RAID stripe width:        %u\n",
 306                         sb->s_raid_stripe_width);
 307         if (sb->s_first_meta_bg)
 308                 fprintf(f, "First meta block group:   %u\n",
 309                         sb->s_first_meta_bg);
 310         if (sb->s_log_groups_per_flex)
 311                 fprintf(f, "Flex block group size:    %u\n",
 312                         1 << sb->s_log_groups_per_flex);
 313         if (sb->s_mkfs_time) {
 314                 tm = sb->s_mkfs_time;
 315                 fprintf(f, "Filesystem created:       %s", ctime(&tm));
 316         }
 317         tm = sb->s_mtime;
 318         fprintf(f, "Last mount time:          %s",
 319                 sb->s_mtime ? ctime(&tm) : "n/a\n");
 320         tm = sb->s_wtime;
 321         fprintf(f, "Last write time:          %s", ctime(&tm));
 322         fprintf(f, "Mount count:              %u\n", sb->s_mnt_count);
 323         fprintf(f, "Maximum mount count:      %d\n", sb->s_max_mnt_count);
 324         tm = sb->s_lastcheck;
 325         fprintf(f, "Last checked:             %s", ctime(&tm));
 326         fprintf(f, "Check interval:           %u (%s)\n", sb->s_checkinterval,
 327                interval_string(sb->s_checkinterval));
 328         if (sb->s_checkinterval)
 329         {
 330                 time_t next;
 331
 332                 next = sb->s_lastcheck + sb->s_checkinterval;
 333                 fprintf(f, "Next check after:         %s", ctime(&next));
 334         }
 335 #define POW2(x) ((__u64) 1 << (x))
 336         if (sb->s_kbytes_written) {
 337                 fprintf(f, "Lifetime writes:          ");
 338                 if (sb->s_kbytes_written < POW2(13))
 339                         fprintf(f, "%llu kB\n", sb->s_kbytes_written);
 340                 else if (sb->s_kbytes_written < POW2(23))
 341                         fprintf(f, "%llu MB\n",
 342                                 (sb->s_kbytes_written + POW2(9)) >> 10);
 343                 else if (sb->s_kbytes_written < POW2(33))
 344                         fprintf(f, "%llu GB\n",
 345                                 (sb->s_kbytes_written + POW2(19)) >> 20);
 346                 else if (sb->s_kbytes_written < POW2(43))
 347                         fprintf(f, "%llu TB\n",
 348                                 (sb->s_kbytes_written + POW2(29)) >> 30);
 349                 else
 350                         fprintf(f, "%llu PB\n",
 351                                 (sb->s_kbytes_written + POW2(39)) >> 40);
 352         }
 353         fprintf(f, "Reserved blocks uid:      ");
 354         print_user(sb->s_def_resuid, f);
 355         fprintf(f, "Reserved blocks gid:      ");
 356         print_group(sb->s_def_resgid, f);
 357         if (sb->s_rev_level >= EXT2_DYNAMIC_REV) {
 358                 fprintf(f, "First inode:              %d\n", sb->s_first_ino);
 359                 fprintf(f, "Inode size:           %d\n", sb->s_inode_size);
 360                 if (sb->s_min_extra_isize)
 361                         fprintf(f, "Required extra isize:     %d\n",
 362                                 sb->s_min_extra_isize);
 363                 if (sb->s_want_extra_isize)
 364                         fprintf(f, "Desired extra isize:      %d\n",
 365                                 sb->s_want_extra_isize);
 366         }
 367         if (!e2p_is_null_uuid(sb->s_journal_uuid))
 368                 fprintf(f, "Journal UUID:             %s\n",
 369                         e2p_uuid2str(sb->s_journal_uuid));
 370         if (sb->s_journal_inum)
 371                 fprintf(f, "Journal inode:            %u\n",
 372                         sb->s_journal_inum);
 373         if (sb->s_journal_dev)
 374                 fprintf(f, "Journal device:               0x%04x\n",
 375                         sb->s_journal_dev);
 376         if (sb->s_last_orphan)
 377                 fprintf(f, "First orphan inode:       %u\n",
 378                         sb->s_last_orphan);
 379         if (ext2fs_has_feature_dir_index(sb) ||
 380             sb->s_def_hash_version)
 381                 fprintf(f, "Default directory hash:   %s\n",
 382                         e2p_hash2string(sb->s_def_hash_version));
 383         if (!e2p_is_null_uuid(sb->s_hash_seed))
 384                 fprintf(f, "Directory Hash Seed:      %s\n",
 385                         e2p_uuid2str(sb->s_hash_seed));
 386         if (sb->s_jnl_backup_type) {
 387                 fprintf(f, "Journal backup:           ");
 388                 switch (sb->s_jnl_backup_type) {
 389                 case 1:
 390                         fprintf(f, "inode blocks\n");
 391                         break;
 392                 default:
 393                         fprintf(f, "type %u\n", sb->s_jnl_backup_type);
 394                 }
 395         }
 396         if (sb->s_backup_bgs[0] || sb->s_backup_bgs[1]) {
 397                 fprintf(f, "Backup block groups:      ");
 398                 if (sb->s_backup_bgs[0])
 399                         fprintf(f, "%u ", sb->s_backup_bgs[0]);
 400                 if (sb->s_backup_bgs[1])
 401                         fprintf(f, "%u ", sb->s_backup_bgs[1]);
 402                 fputc('\n', f);
 403         }
 404         if (sb->s_snapshot_inum) {
 405                 fprintf(f, "Snapshot inode:           %u\n",
 406                         sb->s_snapshot_inum);
 407                 fprintf(f, "Snapshot ID:              %u\n",
 408                         sb->s_snapshot_id);
 409                 fprintf(f, "Snapshot reserved blocks: %llu\n",
 410                         sb->s_snapshot_r_blocks_count);
 411         }
 412         if (sb->s_snapshot_list)
 413                 fprintf(f, "Snapshot list head:       %u\n",
 414                         sb->s_snapshot_list);
 415         if (sb->s_error_count)
 416                 fprintf(f, "FS Error count:           %u\n",
 417                         sb->s_error_count);
 418         if (sb->s_first_error_time) {
 419                 tm = sb->s_first_error_time;
 420                 fprintf(f, "First error time:         %s", ctime(&tm));
 421                 memset(buf, 0, sizeof(buf));
 422                 strncpy(buf, (char *)sb->s_first_error_func,
 423                         sizeof(sb->s_first_error_func));
 424                 fprintf(f, "First error function:     %s\n", buf);
 425                 fprintf(f, "First error line #:       %u\n",
 426                         sb->s_first_error_line);
 427                 fprintf(f, "First error inode #:      %u\n",
 428                         sb->s_first_error_ino);
 429                 fprintf(f, "First error block #:      %llu\n",
 430                         sb->s_first_error_block);
 431         }
 432         if (sb->s_last_error_time) {
 433                 tm = sb->s_last_error_time;
 434                 fprintf(f, "Last error time:          %s", ctime(&tm));
 435                 memset(buf, 0, sizeof(buf));
 436                 strncpy(buf, (char *)sb->s_last_error_func,
 437                         sizeof(sb->s_last_error_func));
 438                 fprintf(f, "Last error function:      %s\n", buf);
 439                 fprintf(f, "Last error line #:        %u\n",
 440                         sb->s_last_error_line);
 441                 fprintf(f, "Last error inode #:       %u\n",
 442                         sb->s_last_error_ino);
 443                 fprintf(f, "Last error block #:       %llu\n",
 444                         sb->s_last_error_block);
 445         }
 446         if (ext2fs_has_feature_mmp(sb)) {
 447                 fprintf(f, "MMP block number:         %llu\n",
 448                         (long long)sb->s_mmp_block);
 449                 fprintf(f, "MMP update interval:      %u\n",
 450                         sb->s_mmp_update_interval);
 451         }
 452         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
 453                 if (*quota_sb_inump(sb, qtype) != 0)
 454                         fprintf(f, "%-26s%u\n",
 455                                 quota_type2prefix(qtype),
 456                                 *quota_sb_inump(sb, qtype));
 457         }
 458
 459         if (ext2fs_has_feature_metadata_csum(sb)) {
 460                 fprintf(f, "Checksum type:            %s\n",
 461                         checksum_type(sb->s_checksum_type));
 462                 fprintf(f, "Checksum:                 0x%08x\n",
 463                         sb->s_checksum);
 464         }
 465         if (!e2p_is_null_uuid(sb->s_encrypt_pw_salt))
 466                 fprintf(f, "Encryption PW Salt:       %s\n",
 467                         e2p_uuid2str(sb->s_encrypt_pw_salt));
 468 }
 469
 470 void list_super (struct ext2_super_block * s)
 471 {
 472         list_super2(s, stdout);
 473 }
 474