ls.c revision 0180a05e7449ba3ba6b15f7a5c372f712331cb89
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 * This file can be redistributed under the terms of the GNU Library General 11 * Public License 12 */ 13 14#include <stdio.h> 15#include <stdlib.h> 16#include <sys/types.h> 17#include <string.h> 18#include <grp.h> 19#include <pwd.h> 20#include <time.h> 21 22#include "e2p.h" 23 24static void print_user (unsigned short uid, FILE *f) 25{ 26 struct passwd *pw; 27 28 fprintf(f, "%u ", uid); 29 pw = getpwuid (uid); 30 if (pw == NULL) 31 fprintf(f, "(user unknown)\n"); 32 else 33 fprintf(f, "(user %s)\n", pw->pw_name); 34} 35 36static void print_group (unsigned short gid, FILE *f) 37{ 38 struct group *gr; 39 40 fprintf(f, "%u ", gid); 41 gr = getgrgid (gid); 42 if (gr == NULL) 43 fprintf(f, "(group unknown)\n"); 44 else 45 fprintf(f, "(group %s)\n", gr->gr_name); 46} 47 48#define MONTH_INT (86400 * 30) 49#define WEEK_INT (86400 * 7) 50#define DAY_INT (86400) 51#define HOUR_INT (60 * 60) 52#define MINUTE_INT (60) 53 54static const char *interval_string(unsigned int secs) 55{ 56 static char buf[256], tmp[80]; 57 int hr, min, num; 58 59 buf[0] = 0; 60 61 if (secs == 0) 62 return "<none>"; 63 64 if (secs >= MONTH_INT) { 65 num = secs / MONTH_INT; 66 secs -= num*MONTH_INT; 67 sprintf(buf, "%d month%s", num, (num>1) ? "s" : ""); 68 } 69 if (secs >= WEEK_INT) { 70 num = secs / WEEK_INT; 71 secs -= num*WEEK_INT; 72 sprintf(tmp, "%s%d week%s", buf[0] ? ", " : "", 73 num, (num>1) ? "s" : ""); 74 strcat(buf, tmp); 75 } 76 if (secs >= DAY_INT) { 77 num = secs / DAY_INT; 78 secs -= num*DAY_INT; 79 sprintf(tmp, "%s%d day%s", buf[0] ? ", " : "", 80 num, (num>1) ? "s" : ""); 81 strcat(buf, tmp); 82 } 83 if (secs > 0) { 84 hr = secs / HOUR_INT; 85 secs -= hr*HOUR_INT; 86 min = secs / MINUTE_INT; 87 secs -= min*MINUTE_INT; 88 sprintf(tmp, "%s%d:%02d:%02d", buf[0] ? ", " : "", 89 hr, min, secs); 90 strcat(buf, tmp); 91 } 92 return buf; 93} 94 95static void print_features(struct ext2_super_block * s, FILE *f) 96{ 97#ifdef EXT2_DYNAMIC_REV 98 int i, j, printed=0; 99 __u32 *mask = &s->s_feature_compat, m; 100 101 fprintf(f, "Filesystem features: "); 102 for (i=0; i <3; i++,mask++) { 103 for (j=0,m=1; j < 32; j++, m<<=1) { 104 if (*mask & m) { 105 fprintf(f, " %s", e2p_feature2string(i, m)); 106 printed++; 107 } 108 } 109 } 110 if (printed == 0) 111 fprintf(f, " (none)"); 112 fprintf(f, "\n"); 113#endif 114} 115 116static void print_mntopts(struct ext2_super_block * s, FILE *f) 117{ 118#ifdef EXT2_DYNAMIC_REV 119 int i, printed=0; 120 __u32 mask = s->s_default_mount_opts, m; 121 122 fprintf(f, "Default mount options: "); 123 if (mask & EXT3_DEFM_JMODE) { 124 fprintf(f, " %s", e2p_mntopt2string(mask & EXT3_DEFM_JMODE)); 125 printed++; 126 } 127 for (i=0,m=1; i < 32; i++, m<<=1) { 128 if (m & EXT3_DEFM_JMODE) 129 continue; 130 if (mask & m) { 131 fprintf(f, " %s", e2p_mntopt2string(m)); 132 printed++; 133 } 134 } 135 if (printed == 0) 136 fprintf(f, " (none)"); 137 fprintf(f, "\n"); 138#endif 139} 140 141static void print_super_flags(struct ext2_super_block * s, FILE *f) 142{ 143 int flags_found = 0; 144 145 if (s->s_flags == 0) 146 return; 147 148 fputs("Filesystem flags: ", f); 149 if (s->s_flags & EXT2_FLAGS_SIGNED_HASH) { 150 fputs("signed_directory_hash ", f); 151 flags_found++; 152 } 153 if (s->s_flags & EXT2_FLAGS_UNSIGNED_HASH) { 154 fputs("unsigned_directory_hash ", f); 155 flags_found++; 156 } 157 if (s->s_flags & EXT2_FLAGS_TEST_FILESYS) { 158 fputs("test_filesystem ", f); 159 flags_found++; 160 } 161 if (flags_found) 162 fputs("\n", f); 163 else 164 fputs("(none)\n", f); 165} 166 167static __u64 e2p_blocks_count(struct ext2_super_block *super) 168{ 169 return super->s_blocks_count | 170 (super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT ? 171 (__u64) super->s_blocks_count_hi << 32 : 0); 172} 173 174static __u64 e2p_r_blocks_count(struct ext2_super_block *super) 175{ 176 return super->s_r_blocks_count | 177 (super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT ? 178 (__u64) super->s_r_blocks_count_hi << 32 : 0); 179} 180 181static __u64 e2p_free_blocks_count(struct ext2_super_block *super) 182{ 183 return super->s_free_blocks_count | 184 (super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT ? 185 (__u64) super->s_free_blocks_hi << 32 : 0); 186} 187 188#ifndef EXT2_INODE_SIZE 189#define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode) 190#endif 191 192#ifndef EXT2_GOOD_OLD_REV 193#define EXT2_GOOD_OLD_REV 0 194#endif 195 196void list_super2(struct ext2_super_block * sb, FILE *f) 197{ 198 int inode_blocks_per_group; 199 char buf[80], *str; 200 time_t tm; 201 202 inode_blocks_per_group = (((sb->s_inodes_per_group * 203 EXT2_INODE_SIZE(sb)) + 204 EXT2_BLOCK_SIZE(sb) - 1) / 205 EXT2_BLOCK_SIZE(sb)); 206 if (sb->s_volume_name[0]) { 207 memset(buf, 0, sizeof(buf)); 208 strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name)); 209 } else 210 strcpy(buf, "<none>"); 211 fprintf(f, "Filesystem volume name: %s\n", buf); 212 if (sb->s_last_mounted[0]) { 213 memset(buf, 0, sizeof(buf)); 214 strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted)); 215 } else 216 strcpy(buf, "<not available>"); 217 fprintf(f, "Last mounted on: %s\n", buf); 218 fprintf(f, "Filesystem UUID: %s\n", e2p_uuid2str(sb->s_uuid)); 219 fprintf(f, "Filesystem magic number: 0x%04X\n", sb->s_magic); 220 fprintf(f, "Filesystem revision #: %d", sb->s_rev_level); 221 if (sb->s_rev_level == EXT2_GOOD_OLD_REV) { 222 fprintf(f, " (original)\n"); 223#ifdef EXT2_DYNAMIC_REV 224 } else if (sb->s_rev_level == EXT2_DYNAMIC_REV) { 225 fprintf(f, " (dynamic)\n"); 226#endif 227 } else 228 fprintf(f, " (unknown)\n"); 229 print_features(sb, f); 230 print_super_flags(sb, f); 231 print_mntopts(sb, f); 232 fprintf(f, "Filesystem state: "); 233 print_fs_state (f, sb->s_state); 234 fprintf(f, "\n"); 235 fprintf(f, "Errors behavior: "); 236 print_fs_errors(f, sb->s_errors); 237 fprintf(f, "\n"); 238 str = e2p_os2string(sb->s_creator_os); 239 fprintf(f, "Filesystem OS type: %s\n", str); 240 free(str); 241 fprintf(f, "Inode count: %u\n", sb->s_inodes_count); 242 fprintf(f, "Block count: %llu\n", e2p_blocks_count(sb)); 243 fprintf(f, "Reserved block count: %llu\n", e2p_r_blocks_count(sb)); 244 fprintf(f, "Free blocks: %llu\n", e2p_free_blocks_count(sb)); 245 fprintf(f, "Free inodes: %u\n", sb->s_free_inodes_count); 246 fprintf(f, "First block: %u\n", sb->s_first_data_block); 247 fprintf(f, "Block size: %u\n", EXT2_BLOCK_SIZE(sb)); 248 fprintf(f, "Fragment size: %u\n", EXT2_FRAG_SIZE(sb)); 249 if (sb->s_reserved_gdt_blocks) 250 fprintf(f, "Reserved GDT blocks: %u\n", 251 sb->s_reserved_gdt_blocks); 252 fprintf(f, "Blocks per group: %u\n", sb->s_blocks_per_group); 253 fprintf(f, "Fragments per group: %u\n", sb->s_frags_per_group); 254 fprintf(f, "Inodes per group: %u\n", sb->s_inodes_per_group); 255 fprintf(f, "Inode blocks per group: %u\n", inode_blocks_per_group); 256 if (sb->s_raid_stride) 257 fprintf(f, "RAID stride: %u\n", 258 sb->s_raid_stride); 259 if (sb->s_raid_stripe_width) 260 fprintf(f, "RAID stripe width: %u\n", 261 sb->s_raid_stripe_width); 262 if (sb->s_first_meta_bg) 263 fprintf(f, "First meta block group: %u\n", 264 sb->s_first_meta_bg); 265 if (sb->s_log_groups_per_flex) 266 fprintf(f, "Flex block group size: %u\n", 267 1 << sb->s_log_groups_per_flex); 268 if (sb->s_mkfs_time) { 269 tm = sb->s_mkfs_time; 270 fprintf(f, "Filesystem created: %s", ctime(&tm)); 271 } 272 tm = sb->s_mtime; 273 fprintf(f, "Last mount time: %s", 274 sb->s_mtime ? ctime(&tm) : "n/a\n"); 275 tm = sb->s_wtime; 276 fprintf(f, "Last write time: %s", ctime(&tm)); 277 fprintf(f, "Mount count: %u\n", sb->s_mnt_count); 278 fprintf(f, "Maximum mount count: %d\n", sb->s_max_mnt_count); 279 tm = sb->s_lastcheck; 280 fprintf(f, "Last checked: %s", ctime(&tm)); 281 fprintf(f, "Check interval: %u (%s)\n", sb->s_checkinterval, 282 interval_string(sb->s_checkinterval)); 283 if (sb->s_checkinterval) 284 { 285 time_t next; 286 287 next = sb->s_lastcheck + sb->s_checkinterval; 288 fprintf(f, "Next check after: %s", ctime(&next)); 289 } 290#define POW2(x) ((__u64) 1 << (x)) 291 if (sb->s_kbytes_written) { 292 fprintf(f, "Lifetime writes: "); 293 if (sb->s_kbytes_written < POW2(13)) 294 fprintf(f, "%llu kB\n", sb->s_kbytes_written); 295 else if (sb->s_kbytes_written < POW2(23)) 296 fprintf(f, "%llu MB\n", 297 (sb->s_kbytes_written + POW2(9)) >> 10); 298 else if (sb->s_kbytes_written < POW2(33)) 299 fprintf(f, "%llu GB\n", 300 (sb->s_kbytes_written + POW2(19)) >> 20); 301 else if (sb->s_kbytes_written < POW2(43)) 302 fprintf(f, "%llu TB\n", 303 (sb->s_kbytes_written + POW2(29)) >> 30); 304 else 305 fprintf(f, "%llu PB\n", 306 (sb->s_kbytes_written + POW2(39)) >> 40); 307 } 308 fprintf(f, "Reserved blocks uid: "); 309 print_user(sb->s_def_resuid, f); 310 fprintf(f, "Reserved blocks gid: "); 311 print_group(sb->s_def_resgid, f); 312 if (sb->s_rev_level >= EXT2_DYNAMIC_REV) { 313 fprintf(f, "First inode: %d\n", sb->s_first_ino); 314 fprintf(f, "Inode size: %d\n", sb->s_inode_size); 315 if (sb->s_min_extra_isize) 316 fprintf(f, "Required extra isize: %d\n", 317 sb->s_min_extra_isize); 318 if (sb->s_want_extra_isize) 319 fprintf(f, "Desired extra isize: %d\n", 320 sb->s_want_extra_isize); 321 } 322 if (!e2p_is_null_uuid(sb->s_journal_uuid)) 323 fprintf(f, "Journal UUID: %s\n", 324 e2p_uuid2str(sb->s_journal_uuid)); 325 if (sb->s_journal_inum) 326 fprintf(f, "Journal inode: %u\n", 327 sb->s_journal_inum); 328 if (sb->s_journal_dev) 329 fprintf(f, "Journal device: 0x%04x\n", 330 sb->s_journal_dev); 331 if (sb->s_last_orphan) 332 fprintf(f, "First orphan inode: %u\n", 333 sb->s_last_orphan); 334 if ((sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) || 335 sb->s_def_hash_version) 336 fprintf(f, "Default directory hash: %s\n", 337 e2p_hash2string(sb->s_def_hash_version)); 338 if (!e2p_is_null_uuid(sb->s_hash_seed)) 339 fprintf(f, "Directory Hash Seed: %s\n", 340 e2p_uuid2str(sb->s_hash_seed)); 341 if (sb->s_jnl_backup_type) { 342 fprintf(f, "Journal backup: "); 343 switch (sb->s_jnl_backup_type) { 344 case 1: 345 fprintf(f, "inode blocks\n"); 346 break; 347 default: 348 fprintf(f, "type %u\n", sb->s_jnl_backup_type); 349 } 350 } 351} 352 353void list_super (struct ext2_super_block * s) 354{ 355 list_super2(s, stdout); 356} 357 358