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 <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_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT) 262 fprintf(f, "Group descriptor size: %u\n", sb->s_desc_size); 263 if (sb->s_reserved_gdt_blocks) 264 fprintf(f, "Reserved GDT blocks: %u\n", 265 sb->s_reserved_gdt_blocks); 266 fprintf(f, "Blocks per group: %u\n", sb->s_blocks_per_group); 267 if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_BIGALLOC) 268 fprintf(f, "Clusters per group: %u\n", 269 sb->s_clusters_per_group); 270 else 271 fprintf(f, "Fragments per group: %u\n", 272 sb->s_clusters_per_group); 273 fprintf(f, "Inodes per group: %u\n", sb->s_inodes_per_group); 274 fprintf(f, "Inode blocks per group: %u\n", inode_blocks_per_group); 275 if (sb->s_raid_stride) 276 fprintf(f, "RAID stride: %u\n", 277 sb->s_raid_stride); 278 if (sb->s_raid_stripe_width) 279 fprintf(f, "RAID stripe width: %u\n", 280 sb->s_raid_stripe_width); 281 if (sb->s_first_meta_bg) 282 fprintf(f, "First meta block group: %u\n", 283 sb->s_first_meta_bg); 284 if (sb->s_log_groups_per_flex) 285 fprintf(f, "Flex block group size: %u\n", 286 1 << sb->s_log_groups_per_flex); 287 if (sb->s_mkfs_time) { 288 tm = sb->s_mkfs_time; 289 fprintf(f, "Filesystem created: %s", ctime(&tm)); 290 } 291 tm = sb->s_mtime; 292 fprintf(f, "Last mount time: %s", 293 sb->s_mtime ? ctime(&tm) : "n/a\n"); 294 tm = sb->s_wtime; 295 fprintf(f, "Last write time: %s", ctime(&tm)); 296 fprintf(f, "Mount count: %u\n", sb->s_mnt_count); 297 fprintf(f, "Maximum mount count: %d\n", sb->s_max_mnt_count); 298 tm = sb->s_lastcheck; 299 fprintf(f, "Last checked: %s", ctime(&tm)); 300 fprintf(f, "Check interval: %u (%s)\n", sb->s_checkinterval, 301 interval_string(sb->s_checkinterval)); 302 if (sb->s_checkinterval) 303 { 304 time_t next; 305 306 next = sb->s_lastcheck + sb->s_checkinterval; 307 fprintf(f, "Next check after: %s", ctime(&next)); 308 } 309 #define POW2(x) ((__u64) 1 << (x)) 310 if (sb->s_kbytes_written) { 311 fprintf(f, "Lifetime writes: "); 312 if (sb->s_kbytes_written < POW2(13)) 313 fprintf(f, "%llu kB\n", sb->s_kbytes_written); 314 else if (sb->s_kbytes_written < POW2(23)) 315 fprintf(f, "%llu MB\n", 316 (sb->s_kbytes_written + POW2(9)) >> 10); 317 else if (sb->s_kbytes_written < POW2(33)) 318 fprintf(f, "%llu GB\n", 319 (sb->s_kbytes_written + POW2(19)) >> 20); 320 else if (sb->s_kbytes_written < POW2(43)) 321 fprintf(f, "%llu TB\n", 322 (sb->s_kbytes_written + POW2(29)) >> 30); 323 else 324 fprintf(f, "%llu PB\n", 325 (sb->s_kbytes_written + POW2(39)) >> 40); 326 } 327 fprintf(f, "Reserved blocks uid: "); 328 print_user(sb->s_def_resuid, f); 329 fprintf(f, "Reserved blocks gid: "); 330 print_group(sb->s_def_resgid, f); 331 if (sb->s_rev_level >= EXT2_DYNAMIC_REV) { 332 fprintf(f, "First inode: %d\n", sb->s_first_ino); 333 fprintf(f, "Inode size: %d\n", sb->s_inode_size); 334 if (sb->s_min_extra_isize) 335 fprintf(f, "Required extra isize: %d\n", 336 sb->s_min_extra_isize); 337 if (sb->s_want_extra_isize) 338 fprintf(f, "Desired extra isize: %d\n", 339 sb->s_want_extra_isize); 340 } 341 if (!e2p_is_null_uuid(sb->s_journal_uuid)) 342 fprintf(f, "Journal UUID: %s\n", 343 e2p_uuid2str(sb->s_journal_uuid)); 344 if (sb->s_journal_inum) 345 fprintf(f, "Journal inode: %u\n", 346 sb->s_journal_inum); 347 if (sb->s_journal_dev) 348 fprintf(f, "Journal device: 0x%04x\n", 349 sb->s_journal_dev); 350 if (sb->s_last_orphan) 351 fprintf(f, "First orphan inode: %u\n", 352 sb->s_last_orphan); 353 if ((sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) || 354 sb->s_def_hash_version) 355 fprintf(f, "Default directory hash: %s\n", 356 e2p_hash2string(sb->s_def_hash_version)); 357 if (!e2p_is_null_uuid(sb->s_hash_seed)) 358 fprintf(f, "Directory Hash Seed: %s\n", 359 e2p_uuid2str(sb->s_hash_seed)); 360 if (sb->s_jnl_backup_type) { 361 fprintf(f, "Journal backup: "); 362 switch (sb->s_jnl_backup_type) { 363 case 1: 364 fprintf(f, "inode blocks\n"); 365 break; 366 default: 367 fprintf(f, "type %u\n", sb->s_jnl_backup_type); 368 } 369 } 370 if (sb->s_snapshot_inum) { 371 fprintf(f, "Snapshot inode: %u\n", 372 sb->s_snapshot_inum); 373 fprintf(f, "Snapshot ID: %u\n", 374 sb->s_snapshot_id); 375 fprintf(f, "Snapshot reserved blocks: %llu\n", 376 sb->s_snapshot_r_blocks_count); 377 } 378 if (sb->s_snapshot_list) 379 fprintf(f, "Snapshot list head: %u\n", 380 sb->s_snapshot_list); 381 if (sb->s_error_count) 382 fprintf(f, "FS Error count: %u\n", 383 sb->s_error_count); 384 if (sb->s_first_error_time) { 385 tm = sb->s_first_error_time; 386 fprintf(f, "First error time: %s", ctime(&tm)); 387 memset(buf, 0, sizeof(buf)); 388 strncpy(buf, (char *)sb->s_first_error_func, 389 sizeof(sb->s_first_error_func)); 390 fprintf(f, "First error function: %s\n", buf); 391 fprintf(f, "First error line #: %u\n", 392 sb->s_first_error_line); 393 fprintf(f, "First error inode #: %u\n", 394 sb->s_first_error_ino); 395 fprintf(f, "First error block #: %llu\n", 396 sb->s_first_error_block); 397 } 398 if (sb->s_last_error_time) { 399 tm = sb->s_last_error_time; 400 fprintf(f, "Last error time: %s", ctime(&tm)); 401 memset(buf, 0, sizeof(buf)); 402 strncpy(buf, (char *)sb->s_last_error_func, 403 sizeof(sb->s_last_error_func)); 404 fprintf(f, "Last error function: %s\n", buf); 405 fprintf(f, "Last error line #: %u\n", 406 sb->s_last_error_line); 407 fprintf(f, "Last error inode #: %u\n", 408 sb->s_last_error_ino); 409 fprintf(f, "Last error block #: %llu\n", 410 sb->s_last_error_block); 411 } 412 if (sb->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) { 413 fprintf(f, "MMP block number: %llu\n", 414 (long long)sb->s_mmp_block); 415 fprintf(f, "MMP update interval: %u\n", 416 sb->s_mmp_update_interval); 417 } 418 if (sb->s_usr_quota_inum) 419 fprintf(f, "User quota inode: %u\n", 420 sb->s_usr_quota_inum); 421 if (sb->s_grp_quota_inum) 422 fprintf(f, "Group quota inode: %u\n", 423 sb->s_grp_quota_inum); 424 425 if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) 426 fprintf(f, "Checksum: 0x%08x\n", 427 sb->s_checksum); 428 } 429 430 void list_super (struct ext2_super_block * s) 431 { 432 list_super2(s, stdout); 433 } 434 435
