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 <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
print_user(unsigned short uid,FILE * f)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
print_group(unsigned short gid,FILE * f)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
interval_string(unsigned int secs)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
print_features(struct ext2_super_block * s,FILE * f)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
print_mntopts(struct ext2_super_block * s,FILE * f)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
print_super_flags(struct ext2_super_block * s,FILE * f)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
e2p_blocks_count(struct ext2_super_block * super)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
e2p_r_blocks_count(struct ext2_super_block * super)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
e2p_free_blocks_count(struct ext2_super_block * super)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
list_super2(struct ext2_super_block * sb,FILE * f)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
list_super(struct ext2_super_block * s)430 void list_super (struct ext2_super_block * s)
431 {
432 list_super2(s, stdout);
433 }
434
435