ls.c revision 0f5eba7501f467f757792ee449d16c9259b994fd
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 27static 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 39static 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 57static 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 98static 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 119static 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 144static 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 170static __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 177static __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 184static __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 199void list_super2(struct ext2_super_block * sb, FILE *f) 200{ 201 int inode_blocks_per_group; 202 char buf[80], *str; 203 time_t tm; 204 205 inode_blocks_per_group = (((sb->s_inodes_per_group * 206 EXT2_INODE_SIZE(sb)) + 207 EXT2_BLOCK_SIZE(sb) - 1) / 208 EXT2_BLOCK_SIZE(sb)); 209 if (sb->s_volume_name[0]) { 210 memset(buf, 0, sizeof(buf)); 211 strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name)); 212 } else 213 strcpy(buf, "<none>"); 214 fprintf(f, "Filesystem volume name: %s\n", buf); 215 if (sb->s_last_mounted[0]) { 216 memset(buf, 0, sizeof(buf)); 217 strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted)); 218 } else 219 strcpy(buf, "<not available>"); 220 fprintf(f, "Last mounted on: %s\n", buf); 221 fprintf(f, "Filesystem UUID: %s\n", e2p_uuid2str(sb->s_uuid)); 222 fprintf(f, "Filesystem magic number: 0x%04X\n", sb->s_magic); 223 fprintf(f, "Filesystem revision #: %d", sb->s_rev_level); 224 if (sb->s_rev_level == EXT2_GOOD_OLD_REV) { 225 fprintf(f, " (original)\n"); 226#ifdef EXT2_DYNAMIC_REV 227 } else if (sb->s_rev_level == EXT2_DYNAMIC_REV) { 228 fprintf(f, " (dynamic)\n"); 229#endif 230 } else 231 fprintf(f, " (unknown)\n"); 232 print_features(sb, f); 233 print_super_flags(sb, f); 234 print_mntopts(sb, f); 235 if (sb->s_mount_opts[0]) 236 fprintf(f, "Mount options: %s\n", sb->s_mount_opts); 237 fprintf(f, "Filesystem state: "); 238 print_fs_state (f, sb->s_state); 239 fprintf(f, "\n"); 240 fprintf(f, "Errors behavior: "); 241 print_fs_errors(f, sb->s_errors); 242 fprintf(f, "\n"); 243 str = e2p_os2string(sb->s_creator_os); 244 fprintf(f, "Filesystem OS type: %s\n", str); 245 free(str); 246 fprintf(f, "Inode count: %u\n", sb->s_inodes_count); 247 fprintf(f, "Block count: %llu\n", e2p_blocks_count(sb)); 248 fprintf(f, "Reserved block count: %llu\n", e2p_r_blocks_count(sb)); 249 if (sb->s_overhead_blocks) 250 fprintf(f, "Overhead blocks: %u\n", 251 sb->s_overhead_blocks); 252 fprintf(f, "Free blocks: %llu\n", e2p_free_blocks_count(sb)); 253 fprintf(f, "Free inodes: %u\n", sb->s_free_inodes_count); 254 fprintf(f, "First block: %u\n", sb->s_first_data_block); 255 fprintf(f, "Block size: %u\n", EXT2_BLOCK_SIZE(sb)); 256 if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_BIGALLOC) 257 fprintf(f, "Cluster size: %u\n", 258 EXT2_CLUSTER_SIZE(sb)); 259 else 260 fprintf(f, "Fragment size: %u\n", 261 EXT2_CLUSTER_SIZE(sb)); 262 if (sb->s_reserved_gdt_blocks) 263 fprintf(f, "Reserved GDT blocks: %u\n", 264 sb->s_reserved_gdt_blocks); 265 fprintf(f, "Blocks per group: %u\n", sb->s_blocks_per_group); 266 if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_BIGALLOC) 267 fprintf(f, "Clusters per group: %u\n", 268 sb->s_clusters_per_group); 269 else 270 fprintf(f, "Fragments per group: %u\n", 271 sb->s_clusters_per_group); 272 fprintf(f, "Inodes per group: %u\n", sb->s_inodes_per_group); 273 fprintf(f, "Inode blocks per group: %u\n", inode_blocks_per_group); 274 if (sb->s_raid_stride) 275 fprintf(f, "RAID stride: %u\n", 276 sb->s_raid_stride); 277 if (sb->s_raid_stripe_width) 278 fprintf(f, "RAID stripe width: %u\n", 279 sb->s_raid_stripe_width); 280 if (sb->s_first_meta_bg) 281 fprintf(f, "First meta block group: %u\n", 282 sb->s_first_meta_bg); 283 if (sb->s_log_groups_per_flex) 284 fprintf(f, "Flex block group size: %u\n", 285 1 << sb->s_log_groups_per_flex); 286 if (sb->s_mkfs_time) { 287 tm = sb->s_mkfs_time; 288 fprintf(f, "Filesystem created: %s", ctime(&tm)); 289 } 290 tm = sb->s_mtime; 291 fprintf(f, "Last mount time: %s", 292 sb->s_mtime ? ctime(&tm) : "n/a\n"); 293 tm = sb->s_wtime; 294 fprintf(f, "Last write time: %s", ctime(&tm)); 295 fprintf(f, "Mount count: %u\n", sb->s_mnt_count); 296 fprintf(f, "Maximum mount count: %d\n", sb->s_max_mnt_count); 297 tm = sb->s_lastcheck; 298 fprintf(f, "Last checked: %s", ctime(&tm)); 299 fprintf(f, "Check interval: %u (%s)\n", sb->s_checkinterval, 300 interval_string(sb->s_checkinterval)); 301 if (sb->s_checkinterval) 302 { 303 time_t next; 304 305 next = sb->s_lastcheck + sb->s_checkinterval; 306 fprintf(f, "Next check after: %s", ctime(&next)); 307 } 308#define POW2(x) ((__u64) 1 << (x)) 309 if (sb->s_kbytes_written) { 310 fprintf(f, "Lifetime writes: "); 311 if (sb->s_kbytes_written < POW2(13)) 312 fprintf(f, "%llu kB\n", sb->s_kbytes_written); 313 else if (sb->s_kbytes_written < POW2(23)) 314 fprintf(f, "%llu MB\n", 315 (sb->s_kbytes_written + POW2(9)) >> 10); 316 else if (sb->s_kbytes_written < POW2(33)) 317 fprintf(f, "%llu GB\n", 318 (sb->s_kbytes_written + POW2(19)) >> 20); 319 else if (sb->s_kbytes_written < POW2(43)) 320 fprintf(f, "%llu TB\n", 321 (sb->s_kbytes_written + POW2(29)) >> 30); 322 else 323 fprintf(f, "%llu PB\n", 324 (sb->s_kbytes_written + POW2(39)) >> 40); 325 } 326 fprintf(f, "Reserved blocks uid: "); 327 print_user(sb->s_def_resuid, f); 328 fprintf(f, "Reserved blocks gid: "); 329 print_group(sb->s_def_resgid, f); 330 if (sb->s_rev_level >= EXT2_DYNAMIC_REV) { 331 fprintf(f, "First inode: %d\n", sb->s_first_ino); 332 fprintf(f, "Inode size: %d\n", sb->s_inode_size); 333 if (sb->s_min_extra_isize) 334 fprintf(f, "Required extra isize: %d\n", 335 sb->s_min_extra_isize); 336 if (sb->s_want_extra_isize) 337 fprintf(f, "Desired extra isize: %d\n", 338 sb->s_want_extra_isize); 339 } 340 if (!e2p_is_null_uuid(sb->s_journal_uuid)) 341 fprintf(f, "Journal UUID: %s\n", 342 e2p_uuid2str(sb->s_journal_uuid)); 343 if (sb->s_journal_inum) 344 fprintf(f, "Journal inode: %u\n", 345 sb->s_journal_inum); 346 if (sb->s_journal_dev) 347 fprintf(f, "Journal device: 0x%04x\n", 348 sb->s_journal_dev); 349 if (sb->s_last_orphan) 350 fprintf(f, "First orphan inode: %u\n", 351 sb->s_last_orphan); 352 if ((sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) || 353 sb->s_def_hash_version) 354 fprintf(f, "Default directory hash: %s\n", 355 e2p_hash2string(sb->s_def_hash_version)); 356 if (!e2p_is_null_uuid(sb->s_hash_seed)) 357 fprintf(f, "Directory Hash Seed: %s\n", 358 e2p_uuid2str(sb->s_hash_seed)); 359 if (sb->s_jnl_backup_type) { 360 fprintf(f, "Journal backup: "); 361 switch (sb->s_jnl_backup_type) { 362 case 1: 363 fprintf(f, "inode blocks\n"); 364 break; 365 default: 366 fprintf(f, "type %u\n", sb->s_jnl_backup_type); 367 } 368 } 369 if (sb->s_snapshot_inum) { 370 fprintf(f, "Snapshot inode: %u\n", 371 sb->s_snapshot_inum); 372 fprintf(f, "Snapshot ID: %u\n", 373 sb->s_snapshot_id); 374 fprintf(f, "Snapshot reserved blocks: %llu\n", 375 sb->s_snapshot_r_blocks_count); 376 } 377 if (sb->s_snapshot_list) 378 fprintf(f, "Snapshot list head: %u\n", 379 sb->s_snapshot_list); 380 if (sb->s_error_count) 381 fprintf(f, "FS Error count: %u\n", 382 sb->s_error_count); 383 if (sb->s_first_error_time) { 384 tm = sb->s_first_error_time; 385 fprintf(f, "First error time: %s", ctime(&tm)); 386 memset(buf, 0, sizeof(buf)); 387 strncpy(buf, (char *)sb->s_first_error_func, 388 sizeof(sb->s_first_error_func)); 389 fprintf(f, "First error function: %s\n", buf); 390 fprintf(f, "First error line #: %u\n", 391 sb->s_first_error_line); 392 fprintf(f, "First error inode #: %u\n", 393 sb->s_first_error_ino); 394 fprintf(f, "First error block #: %llu\n", 395 sb->s_first_error_block); 396 } 397 if (sb->s_last_error_time) { 398 tm = sb->s_last_error_time; 399 fprintf(f, "Last error time: %s", ctime(&tm)); 400 memset(buf, 0, sizeof(buf)); 401 strncpy(buf, (char *)sb->s_last_error_func, 402 sizeof(sb->s_last_error_func)); 403 fprintf(f, "Last error function: %s\n", buf); 404 fprintf(f, "Last error line #: %u\n", 405 sb->s_last_error_line); 406 fprintf(f, "Last error inode #: %u\n", 407 sb->s_last_error_ino); 408 fprintf(f, "Last error block #: %llu\n", 409 sb->s_last_error_block); 410 } 411 if (sb->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) { 412 fprintf(f, "MMP block number: %llu\n", 413 (long long)sb->s_mmp_block); 414 fprintf(f, "MMP update interval: %u\n", 415 sb->s_mmp_update_interval); 416 } 417 if (sb->s_usr_quota_inum) 418 fprintf(f, "User quota inode: %u\n", 419 sb->s_usr_quota_inum); 420 if (sb->s_grp_quota_inum) 421 fprintf(f, "Group quota inode: %u\n", 422 sb->s_grp_quota_inum); 423 424 if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) 425 fprintf(f, "Checksum: 0x%08x\n", 426 sb->s_checksum); 427} 428 429void list_super (struct ext2_super_block * s) 430{ 431 list_super2(s, stdout); 432} 433 434