1 /* 2 * ls.c - List the contents of an ext2fs superblock 3 * 4 * Copyright (C) 1992, 1993, 1994 Remy Card <card (at) 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 (at) 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 [PRJQUOTA] = "Project quota inode:", 214 }; 215 216 /** 217 * Convert type of quota to written representation 218 */ 219 static const char *quota_type2prefix(enum quota_type qtype) 220 { 221 return quota_prefix[qtype]; 222 } 223 224 void list_super2(struct ext2_super_block * sb, FILE *f) 225 { 226 int inode_blocks_per_group; 227 char buf[80], *str; 228 time_t tm; 229 enum quota_type qtype; 230 231 inode_blocks_per_group = (((sb->s_inodes_per_group * 232 EXT2_INODE_SIZE(sb)) + 233 EXT2_BLOCK_SIZE(sb) - 1) / 234 EXT2_BLOCK_SIZE(sb)); 235 if (sb->s_volume_name[0]) { 236 memset(buf, 0, sizeof(buf)); 237 strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name)); 238 } else 239 strcpy(buf, "<none>"); 240 fprintf(f, "Filesystem volume name: %s\n", buf); 241 if (sb->s_last_mounted[0]) { 242 memset(buf, 0, sizeof(buf)); 243 strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted)); 244 } else 245 strcpy(buf, "<not available>"); 246 fprintf(f, "Last mounted on: %s\n", buf); 247 fprintf(f, "Filesystem UUID: %s\n", e2p_uuid2str(sb->s_uuid)); 248 fprintf(f, "Filesystem magic number: 0x%04X\n", sb->s_magic); 249 fprintf(f, "Filesystem revision #: %d", sb->s_rev_level); 250 if (sb->s_rev_level == EXT2_GOOD_OLD_REV) { 251 fprintf(f, " (original)\n"); 252 #ifdef EXT2_DYNAMIC_REV 253 } else if (sb->s_rev_level == EXT2_DYNAMIC_REV) { 254 fprintf(f, " (dynamic)\n"); 255 #endif 256 } else 257 fprintf(f, " (unknown)\n"); 258 print_features(sb, f); 259 print_super_flags(sb, f); 260 print_mntopts(sb, f); 261 if (sb->s_mount_opts[0]) 262 fprintf(f, "Mount options: %s\n", sb->s_mount_opts); 263 fprintf(f, "Filesystem state: "); 264 print_fs_state (f, sb->s_state); 265 fprintf(f, "\n"); 266 fprintf(f, "Errors behavior: "); 267 print_fs_errors(f, sb->s_errors); 268 fprintf(f, "\n"); 269 str = e2p_os2string(sb->s_creator_os); 270 fprintf(f, "Filesystem OS type: %s\n", str); 271 free(str); 272 fprintf(f, "Inode count: %u\n", sb->s_inodes_count); 273 fprintf(f, "Block count: %llu\n", e2p_blocks_count(sb)); 274 fprintf(f, "Reserved block count: %llu\n", e2p_r_blocks_count(sb)); 275 if (sb->s_overhead_blocks) 276 fprintf(f, "Overhead blocks: %u\n", 277 sb->s_overhead_blocks); 278 fprintf(f, "Free blocks: %llu\n", e2p_free_blocks_count(sb)); 279 fprintf(f, "Free inodes: %u\n", sb->s_free_inodes_count); 280 fprintf(f, "First block: %u\n", sb->s_first_data_block); 281 fprintf(f, "Block size: %u\n", EXT2_BLOCK_SIZE(sb)); 282 if (ext2fs_has_feature_bigalloc(sb)) 283 fprintf(f, "Cluster size: %u\n", 284 EXT2_CLUSTER_SIZE(sb)); 285 else 286 fprintf(f, "Fragment size: %u\n", 287 EXT2_CLUSTER_SIZE(sb)); 288 if (ext2fs_has_feature_64bit(sb)) 289 fprintf(f, "Group descriptor size: %u\n", sb->s_desc_size); 290 if (sb->s_reserved_gdt_blocks) 291 fprintf(f, "Reserved GDT blocks: %u\n", 292 sb->s_reserved_gdt_blocks); 293 fprintf(f, "Blocks per group: %u\n", sb->s_blocks_per_group); 294 if (ext2fs_has_feature_bigalloc(sb)) 295 fprintf(f, "Clusters per group: %u\n", 296 sb->s_clusters_per_group); 297 else 298 fprintf(f, "Fragments per group: %u\n", 299 sb->s_clusters_per_group); 300 fprintf(f, "Inodes per group: %u\n", sb->s_inodes_per_group); 301 fprintf(f, "Inode blocks per group: %u\n", inode_blocks_per_group); 302 if (sb->s_raid_stride) 303 fprintf(f, "RAID stride: %u\n", 304 sb->s_raid_stride); 305 if (sb->s_raid_stripe_width) 306 fprintf(f, "RAID stripe width: %u\n", 307 sb->s_raid_stripe_width); 308 if (sb->s_first_meta_bg) 309 fprintf(f, "First meta block group: %u\n", 310 sb->s_first_meta_bg); 311 if (sb->s_log_groups_per_flex) 312 fprintf(f, "Flex block group size: %u\n", 313 1 << sb->s_log_groups_per_flex); 314 if (sb->s_mkfs_time) { 315 tm = sb->s_mkfs_time; 316 fprintf(f, "Filesystem created: %s", ctime(&tm)); 317 } 318 tm = sb->s_mtime; 319 fprintf(f, "Last mount time: %s", 320 sb->s_mtime ? ctime(&tm) : "n/a\n"); 321 tm = sb->s_wtime; 322 fprintf(f, "Last write time: %s", ctime(&tm)); 323 fprintf(f, "Mount count: %u\n", sb->s_mnt_count); 324 fprintf(f, "Maximum mount count: %d\n", sb->s_max_mnt_count); 325 tm = sb->s_lastcheck; 326 fprintf(f, "Last checked: %s", ctime(&tm)); 327 fprintf(f, "Check interval: %u (%s)\n", sb->s_checkinterval, 328 interval_string(sb->s_checkinterval)); 329 if (sb->s_checkinterval) 330 { 331 time_t next; 332 333 next = sb->s_lastcheck + sb->s_checkinterval; 334 fprintf(f, "Next check after: %s", ctime(&next)); 335 } 336 #define POW2(x) ((__u64) 1 << (x)) 337 if (sb->s_kbytes_written) { 338 fprintf(f, "Lifetime writes: "); 339 if (sb->s_kbytes_written < POW2(13)) 340 fprintf(f, "%llu kB\n", sb->s_kbytes_written); 341 else if (sb->s_kbytes_written < POW2(23)) 342 fprintf(f, "%llu MB\n", 343 (sb->s_kbytes_written + POW2(9)) >> 10); 344 else if (sb->s_kbytes_written < POW2(33)) 345 fprintf(f, "%llu GB\n", 346 (sb->s_kbytes_written + POW2(19)) >> 20); 347 else if (sb->s_kbytes_written < POW2(43)) 348 fprintf(f, "%llu TB\n", 349 (sb->s_kbytes_written + POW2(29)) >> 30); 350 else 351 fprintf(f, "%llu PB\n", 352 (sb->s_kbytes_written + POW2(39)) >> 40); 353 } 354 fprintf(f, "Reserved blocks uid: "); 355 print_user(sb->s_def_resuid, f); 356 fprintf(f, "Reserved blocks gid: "); 357 print_group(sb->s_def_resgid, f); 358 if (sb->s_rev_level >= EXT2_DYNAMIC_REV) { 359 fprintf(f, "First inode: %d\n", sb->s_first_ino); 360 fprintf(f, "Inode size: %d\n", sb->s_inode_size); 361 if (sb->s_min_extra_isize) 362 fprintf(f, "Required extra isize: %d\n", 363 sb->s_min_extra_isize); 364 if (sb->s_want_extra_isize) 365 fprintf(f, "Desired extra isize: %d\n", 366 sb->s_want_extra_isize); 367 } 368 if (!e2p_is_null_uuid(sb->s_journal_uuid)) 369 fprintf(f, "Journal UUID: %s\n", 370 e2p_uuid2str(sb->s_journal_uuid)); 371 if (sb->s_journal_inum) 372 fprintf(f, "Journal inode: %u\n", 373 sb->s_journal_inum); 374 if (sb->s_journal_dev) 375 fprintf(f, "Journal device: 0x%04x\n", 376 sb->s_journal_dev); 377 if (sb->s_last_orphan) 378 fprintf(f, "First orphan inode: %u\n", 379 sb->s_last_orphan); 380 if (ext2fs_has_feature_dir_index(sb) || 381 sb->s_def_hash_version) 382 fprintf(f, "Default directory hash: %s\n", 383 e2p_hash2string(sb->s_def_hash_version)); 384 if (!e2p_is_null_uuid(sb->s_hash_seed)) 385 fprintf(f, "Directory Hash Seed: %s\n", 386 e2p_uuid2str(sb->s_hash_seed)); 387 if (sb->s_jnl_backup_type) { 388 fprintf(f, "Journal backup: "); 389 switch (sb->s_jnl_backup_type) { 390 case 1: 391 fprintf(f, "inode blocks\n"); 392 break; 393 default: 394 fprintf(f, "type %u\n", sb->s_jnl_backup_type); 395 } 396 } 397 if (sb->s_backup_bgs[0] || sb->s_backup_bgs[1]) { 398 fprintf(f, "Backup block groups: "); 399 if (sb->s_backup_bgs[0]) 400 fprintf(f, "%u ", sb->s_backup_bgs[0]); 401 if (sb->s_backup_bgs[1]) 402 fprintf(f, "%u ", sb->s_backup_bgs[1]); 403 fputc('\n', f); 404 } 405 if (sb->s_snapshot_inum) { 406 fprintf(f, "Snapshot inode: %u\n", 407 sb->s_snapshot_inum); 408 fprintf(f, "Snapshot ID: %u\n", 409 sb->s_snapshot_id); 410 fprintf(f, "Snapshot reserved blocks: %llu\n", 411 sb->s_snapshot_r_blocks_count); 412 } 413 if (sb->s_snapshot_list) 414 fprintf(f, "Snapshot list head: %u\n", 415 sb->s_snapshot_list); 416 if (sb->s_error_count) 417 fprintf(f, "FS Error count: %u\n", 418 sb->s_error_count); 419 if (sb->s_first_error_time) { 420 tm = sb->s_first_error_time; 421 fprintf(f, "First error time: %s", ctime(&tm)); 422 memset(buf, 0, sizeof(buf)); 423 strncpy(buf, (char *)sb->s_first_error_func, 424 sizeof(sb->s_first_error_func)); 425 fprintf(f, "First error function: %s\n", buf); 426 fprintf(f, "First error line #: %u\n", 427 sb->s_first_error_line); 428 fprintf(f, "First error inode #: %u\n", 429 sb->s_first_error_ino); 430 fprintf(f, "First error block #: %llu\n", 431 sb->s_first_error_block); 432 } 433 if (sb->s_last_error_time) { 434 tm = sb->s_last_error_time; 435 fprintf(f, "Last error time: %s", ctime(&tm)); 436 memset(buf, 0, sizeof(buf)); 437 strncpy(buf, (char *)sb->s_last_error_func, 438 sizeof(sb->s_last_error_func)); 439 fprintf(f, "Last error function: %s\n", buf); 440 fprintf(f, "Last error line #: %u\n", 441 sb->s_last_error_line); 442 fprintf(f, "Last error inode #: %u\n", 443 sb->s_last_error_ino); 444 fprintf(f, "Last error block #: %llu\n", 445 sb->s_last_error_block); 446 } 447 if (ext2fs_has_feature_mmp(sb)) { 448 fprintf(f, "MMP block number: %llu\n", 449 (long long)sb->s_mmp_block); 450 fprintf(f, "MMP update interval: %u\n", 451 sb->s_mmp_update_interval); 452 } 453 for (qtype = 0; qtype < MAXQUOTAS; qtype++) { 454 if (*quota_sb_inump(sb, qtype) != 0) 455 fprintf(f, "%-26s%u\n", 456 quota_type2prefix(qtype), 457 *quota_sb_inump(sb, qtype)); 458 } 459 460 if (ext2fs_has_feature_metadata_csum(sb)) { 461 fprintf(f, "Checksum type: %s\n", 462 checksum_type(sb->s_checksum_type)); 463 fprintf(f, "Checksum: 0x%08x\n", 464 sb->s_checksum); 465 } 466 if (!e2p_is_null_uuid(sb->s_encrypt_pw_salt)) 467 fprintf(f, "Encryption PW Salt: %s\n", 468 e2p_uuid2str(sb->s_encrypt_pw_salt)); 469 470 if (ext2fs_has_feature_csum_seed(sb)) 471 fprintf(f, "Checksum seed: 0x%08x\n", 472 sb->s_checksum_seed); 473 } 474 475 void list_super (struct ext2_super_block * s) 476 { 477 list_super2(s, stdout); 478 } 479 480
