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 * 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 24 static 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 36 static 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 54 static 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 95 static 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 } 115 116 static 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 } 140 141 static 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 } 166 167 168 #ifndef EXT2_INODE_SIZE 169 #define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode) 170 #endif 171 172 #ifndef EXT2_GOOD_OLD_REV 173 #define EXT2_GOOD_OLD_REV 0 174 #endif 175 176 void list_super2(struct ext2_super_block * sb, FILE *f) 177 { 178 int inode_blocks_per_group; 179 char buf[80], *str; 180 time_t tm; 181 182 inode_blocks_per_group = (((sb->s_inodes_per_group * 183 EXT2_INODE_SIZE(sb)) + 184 EXT2_BLOCK_SIZE(sb) - 1) / 185 EXT2_BLOCK_SIZE(sb)); 186 if (sb->s_volume_name[0]) { 187 memset(buf, 0, sizeof(buf)); 188 strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name)); 189 } else 190 strcpy(buf, "<none>"); 191 fprintf(f, "Filesystem volume name: %s\n", buf); 192 if (sb->s_last_mounted[0]) { 193 memset(buf, 0, sizeof(buf)); 194 strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted)); 195 } else 196 strcpy(buf, "<not available>"); 197 fprintf(f, "Last mounted on: %s\n", buf); 198 fprintf(f, "Filesystem UUID: %s\n", e2p_uuid2str(sb->s_uuid)); 199 fprintf(f, "Filesystem magic number: 0x%04X\n", sb->s_magic); 200 fprintf(f, "Filesystem revision #: %d", sb->s_rev_level); 201 if (sb->s_rev_level == EXT2_GOOD_OLD_REV) { 202 fprintf(f, " (original)\n"); 203 #ifdef EXT2_DYNAMIC_REV 204 } else if (sb->s_rev_level == EXT2_DYNAMIC_REV) { 205 fprintf(f, " (dynamic)\n"); 206 #endif 207 } else 208 fprintf(f, " (unknown)\n"); 209 print_features(sb, f); 210 print_super_flags(sb, f); 211 print_mntopts(sb, f); 212 fprintf(f, "Filesystem state: "); 213 print_fs_state (f, sb->s_state); 214 fprintf(f, "\n"); 215 fprintf(f, "Errors behavior: "); 216 print_fs_errors(f, sb->s_errors); 217 fprintf(f, "\n"); 218 str = e2p_os2string(sb->s_creator_os); 219 fprintf(f, "Filesystem OS type: %s\n", str); 220 free(str); 221 fprintf(f, "Inode count: %u\n", sb->s_inodes_count); 222 fprintf(f, "Block count: %u\n", sb->s_blocks_count); 223 fprintf(f, "Reserved block count: %u\n", sb->s_r_blocks_count); 224 fprintf(f, "Free blocks: %u\n", sb->s_free_blocks_count); 225 fprintf(f, "Free inodes: %u\n", sb->s_free_inodes_count); 226 fprintf(f, "First block: %u\n", sb->s_first_data_block); 227 fprintf(f, "Block size: %u\n", EXT2_BLOCK_SIZE(sb)); 228 fprintf(f, "Fragment size: %u\n", EXT2_FRAG_SIZE(sb)); 229 if (sb->s_reserved_gdt_blocks) 230 fprintf(f, "Reserved GDT blocks: %u\n", 231 sb->s_reserved_gdt_blocks); 232 fprintf(f, "Blocks per group: %u\n", sb->s_blocks_per_group); 233 fprintf(f, "Fragments per group: %u\n", sb->s_frags_per_group); 234 fprintf(f, "Inodes per group: %u\n", sb->s_inodes_per_group); 235 fprintf(f, "Inode blocks per group: %u\n", inode_blocks_per_group); 236 if (sb->s_raid_stride) 237 fprintf(f, "RAID stride: %u\n", 238 sb->s_raid_stride); 239 if (sb->s_raid_stripe_width) 240 fprintf(f, "RAID stripe width: %u\n", 241 sb->s_raid_stripe_width); 242 if (sb->s_first_meta_bg) 243 fprintf(f, "First meta block group: %u\n", 244 sb->s_first_meta_bg); 245 if (sb->s_mkfs_time) { 246 tm = sb->s_mkfs_time; 247 fprintf(f, "Filesystem created: %s", ctime(&tm)); 248 } 249 tm = sb->s_mtime; 250 fprintf(f, "Last mount time: %s", 251 sb->s_mtime ? ctime(&tm) : "n/a\n"); 252 tm = sb->s_wtime; 253 fprintf(f, "Last write time: %s", ctime(&tm)); 254 fprintf(f, "Mount count: %u\n", sb->s_mnt_count); 255 fprintf(f, "Maximum mount count: %d\n", sb->s_max_mnt_count); 256 tm = sb->s_lastcheck; 257 fprintf(f, "Last checked: %s", ctime(&tm)); 258 fprintf(f, "Check interval: %u (%s)\n", sb->s_checkinterval, 259 interval_string(sb->s_checkinterval)); 260 if (sb->s_checkinterval) 261 { 262 time_t next; 263 264 next = sb->s_lastcheck + sb->s_checkinterval; 265 fprintf(f, "Next check after: %s", ctime(&next)); 266 } 267 fprintf(f, "Reserved blocks uid: "); 268 print_user(sb->s_def_resuid, f); 269 fprintf(f, "Reserved blocks gid: "); 270 print_group(sb->s_def_resgid, f); 271 if (sb->s_rev_level >= EXT2_DYNAMIC_REV) { 272 fprintf(f, "First inode: %d\n", sb->s_first_ino); 273 fprintf(f, "Inode size: %d\n", sb->s_inode_size); 274 } 275 if (!e2p_is_null_uuid(sb->s_journal_uuid)) 276 fprintf(f, "Journal UUID: %s\n", 277 e2p_uuid2str(sb->s_journal_uuid)); 278 if (sb->s_journal_inum) 279 fprintf(f, "Journal inode: %u\n", 280 sb->s_journal_inum); 281 if (sb->s_journal_dev) 282 fprintf(f, "Journal device: 0x%04x\n", 283 sb->s_journal_dev); 284 if (sb->s_last_orphan) 285 fprintf(f, "First orphan inode: %u\n", 286 sb->s_last_orphan); 287 if ((sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) || 288 sb->s_def_hash_version) 289 fprintf(f, "Default directory hash: %s\n", 290 e2p_hash2string(sb->s_def_hash_version)); 291 if (!e2p_is_null_uuid(sb->s_hash_seed)) 292 fprintf(f, "Directory Hash Seed: %s\n", 293 e2p_uuid2str(sb->s_hash_seed)); 294 if (sb->s_jnl_backup_type) { 295 fprintf(f, "Journal backup: "); 296 switch (sb->s_jnl_backup_type) { 297 case 1: 298 fprintf(f, "inode blocks\n"); 299 break; 300 default: 301 fprintf(f, "type %u\n", sb->s_jnl_backup_type); 302 } 303 } 304 } 305 306 void list_super (struct ext2_super_block * s) 307 { 308 list_super2(s, stdout); 309 } 310 311
