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 #include "support/quotaio.h"
27
print_user(unsigned short uid,FILE * f)28 static void print_user (unsigned short uid, FILE *f)
29 {
30 struct passwd *pw;
31
32 fprintf(f, "%u ", uid);
33 pw = getpwuid (uid);
34 if (pw == NULL)
35 fprintf(f, "(user unknown)\n");
36 else
37 fprintf(f, "(user %s)\n", pw->pw_name);
38 }
39
print_group(unsigned short gid,FILE * f)40 static void print_group (unsigned short gid, FILE *f)
41 {
42 struct group *gr;
43
44 fprintf(f, "%u ", gid);
45 gr = getgrgid (gid);
46 if (gr == NULL)
47 fprintf(f, "(group unknown)\n");
48 else
49 fprintf(f, "(group %s)\n", gr->gr_name);
50 }
51
52 #define MONTH_INT (86400 * 30)
53 #define WEEK_INT (86400 * 7)
54 #define DAY_INT (86400)
55 #define HOUR_INT (60 * 60)
56 #define MINUTE_INT (60)
57
interval_string(unsigned int secs)58 static const char *interval_string(unsigned int secs)
59 {
60 static char buf[256], tmp[80];
61 int hr, min, num;
62
63 buf[0] = 0;
64
65 if (secs == 0)
66 return "<none>";
67
68 if (secs >= MONTH_INT) {
69 num = secs / MONTH_INT;
70 secs -= num*MONTH_INT;
71 sprintf(buf, "%d month%s", num, (num>1) ? "s" : "");
72 }
73 if (secs >= WEEK_INT) {
74 num = secs / WEEK_INT;
75 secs -= num*WEEK_INT;
76 sprintf(tmp, "%s%d week%s", buf[0] ? ", " : "",
77 num, (num>1) ? "s" : "");
78 strcat(buf, tmp);
79 }
80 if (secs >= DAY_INT) {
81 num = secs / DAY_INT;
82 secs -= num*DAY_INT;
83 sprintf(tmp, "%s%d day%s", buf[0] ? ", " : "",
84 num, (num>1) ? "s" : "");
85 strcat(buf, tmp);
86 }
87 if (secs > 0) {
88 hr = secs / HOUR_INT;
89 secs -= hr*HOUR_INT;
90 min = secs / MINUTE_INT;
91 secs -= min*MINUTE_INT;
92 sprintf(tmp, "%s%d:%02d:%02d", buf[0] ? ", " : "",
93 hr, min, secs);
94 strcat(buf, tmp);
95 }
96 return buf;
97 }
98
print_features(struct ext2_super_block * s,FILE * f)99 static void print_features(struct ext2_super_block * s, FILE *f)
100 {
101 #ifdef EXT2_DYNAMIC_REV
102 int i, j, printed=0;
103 __u32 *mask = &s->s_feature_compat, m;
104
105 fprintf(f, "Filesystem features: ");
106 for (i=0; i <3; i++,mask++) {
107 for (j=0,m=1; j < 32; j++, m<<=1) {
108 if (*mask & m) {
109 fprintf(f, " %s", e2p_feature2string(i, m));
110 printed++;
111 }
112 }
113 }
114 if (printed == 0)
115 fprintf(f, " (none)");
116 fprintf(f, "\n");
117 #endif
118 }
119
print_mntopts(struct ext2_super_block * s,FILE * f)120 static void print_mntopts(struct ext2_super_block * s, FILE *f)
121 {
122 #ifdef EXT2_DYNAMIC_REV
123 int i, printed=0;
124 __u32 mask = s->s_default_mount_opts, m;
125
126 fprintf(f, "Default mount options: ");
127 if (mask & EXT3_DEFM_JMODE) {
128 fprintf(f, " %s", e2p_mntopt2string(mask & EXT3_DEFM_JMODE));
129 printed++;
130 }
131 for (i=0,m=1; i < 32; i++, m<<=1) {
132 if (m & EXT3_DEFM_JMODE)
133 continue;
134 if (mask & m) {
135 fprintf(f, " %s", e2p_mntopt2string(m));
136 printed++;
137 }
138 }
139 if (printed == 0)
140 fprintf(f, " (none)");
141 fprintf(f, "\n");
142 #endif
143 }
144
print_super_flags(struct ext2_super_block * s,FILE * f)145 static void print_super_flags(struct ext2_super_block * s, FILE *f)
146 {
147 int flags_found = 0;
148
149 if (s->s_flags == 0)
150 return;
151
152 fputs("Filesystem flags: ", f);
153 if (s->s_flags & EXT2_FLAGS_SIGNED_HASH) {
154 fputs("signed_directory_hash ", f);
155 flags_found++;
156 }
157 if (s->s_flags & EXT2_FLAGS_UNSIGNED_HASH) {
158 fputs("unsigned_directory_hash ", f);
159 flags_found++;
160 }
161 if (s->s_flags & EXT2_FLAGS_TEST_FILESYS) {
162 fputs("test_filesystem ", f);
163 flags_found++;
164 }
165 if (flags_found)
166 fputs("\n", f);
167 else
168 fputs("(none)\n", f);
169 }
170
e2p_blocks_count(struct ext2_super_block * super)171 static __u64 e2p_blocks_count(struct ext2_super_block *super)
172 {
173 return super->s_blocks_count |
174 (ext2fs_has_feature_64bit(super) ?
175 (__u64) super->s_blocks_count_hi << 32 : 0);
176 }
177
e2p_r_blocks_count(struct ext2_super_block * super)178 static __u64 e2p_r_blocks_count(struct ext2_super_block *super)
179 {
180 return super->s_r_blocks_count |
181 (ext2fs_has_feature_64bit(super) ?
182 (__u64) super->s_r_blocks_count_hi << 32 : 0);
183 }
184
e2p_free_blocks_count(struct ext2_super_block * super)185 static __u64 e2p_free_blocks_count(struct ext2_super_block *super)
186 {
187 return super->s_free_blocks_count |
188 (ext2fs_has_feature_64bit(super) ?
189 (__u64) super->s_free_blocks_hi << 32 : 0);
190 }
191
192 #ifndef EXT2_INODE_SIZE
193 #define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
194 #endif
195
196 #ifndef EXT2_GOOD_OLD_REV
197 #define EXT2_GOOD_OLD_REV 0
198 #endif
199
checksum_type(__u8 type)200 static const char *checksum_type(__u8 type)
201 {
202 switch (type) {
203 case EXT2_CRC32C_CHKSUM:
204 return "crc32c";
205 default:
206 return "unknown";
207 }
208 }
209
210 static const char *quota_prefix[MAXQUOTAS] = {
211 [USRQUOTA] = "User quota inode:",
212 [GRPQUOTA] = "Group quota inode:",
213 [PRJQUOTA] = "Project quota inode:",
214 };
215
216 /**
217 * Convert type of quota to written representation
218 */
quota_type2prefix(enum quota_type qtype)219 static const char *quota_type2prefix(enum quota_type qtype)
220 {
221 return quota_prefix[qtype];
222 }
223
list_super2(struct ext2_super_block * sb,FILE * f)224 void list_super2(struct ext2_super_block * sb, FILE *f)
225 {
226 int inode_blocks_per_group;
227 char buf[80], *str;
228 time_t tm;
229 enum quota_type qtype;
230
231 inode_blocks_per_group = (((sb->s_inodes_per_group *
232 EXT2_INODE_SIZE(sb)) +
233 EXT2_BLOCK_SIZE(sb) - 1) /
234 EXT2_BLOCK_SIZE(sb));
235 if (sb->s_volume_name[0]) {
236 memset(buf, 0, sizeof(buf));
237 strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name));
238 } else
239 strcpy(buf, "<none>");
240 fprintf(f, "Filesystem volume name: %s\n", buf);
241 if (sb->s_last_mounted[0]) {
242 memset(buf, 0, sizeof(buf));
243 strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted));
244 } else
245 strcpy(buf, "<not available>");
246 fprintf(f, "Last mounted on: %s\n", buf);
247 fprintf(f, "Filesystem UUID: %s\n", e2p_uuid2str(sb->s_uuid));
248 fprintf(f, "Filesystem magic number: 0x%04X\n", sb->s_magic);
249 fprintf(f, "Filesystem revision #: %d", sb->s_rev_level);
250 if (sb->s_rev_level == EXT2_GOOD_OLD_REV) {
251 fprintf(f, " (original)\n");
252 #ifdef EXT2_DYNAMIC_REV
253 } else if (sb->s_rev_level == EXT2_DYNAMIC_REV) {
254 fprintf(f, " (dynamic)\n");
255 #endif
256 } else
257 fprintf(f, " (unknown)\n");
258 print_features(sb, f);
259 print_super_flags(sb, f);
260 print_mntopts(sb, f);
261 if (sb->s_mount_opts[0])
262 fprintf(f, "Mount options: %s\n", sb->s_mount_opts);
263 fprintf(f, "Filesystem state: ");
264 print_fs_state (f, sb->s_state);
265 fprintf(f, "\n");
266 fprintf(f, "Errors behavior: ");
267 print_fs_errors(f, sb->s_errors);
268 fprintf(f, "\n");
269 str = e2p_os2string(sb->s_creator_os);
270 fprintf(f, "Filesystem OS type: %s\n", str);
271 free(str);
272 fprintf(f, "Inode count: %u\n", sb->s_inodes_count);
273 fprintf(f, "Block count: %llu\n", e2p_blocks_count(sb));
274 fprintf(f, "Reserved block count: %llu\n", e2p_r_blocks_count(sb));
275 if (sb->s_overhead_blocks)
276 fprintf(f, "Overhead blocks: %u\n",
277 sb->s_overhead_blocks);
278 fprintf(f, "Free blocks: %llu\n", e2p_free_blocks_count(sb));
279 fprintf(f, "Free inodes: %u\n", sb->s_free_inodes_count);
280 fprintf(f, "First block: %u\n", sb->s_first_data_block);
281 fprintf(f, "Block size: %u\n", EXT2_BLOCK_SIZE(sb));
282 if (ext2fs_has_feature_bigalloc(sb))
283 fprintf(f, "Cluster size: %u\n",
284 EXT2_CLUSTER_SIZE(sb));
285 else
286 fprintf(f, "Fragment size: %u\n",
287 EXT2_CLUSTER_SIZE(sb));
288 if (ext2fs_has_feature_64bit(sb))
289 fprintf(f, "Group descriptor size: %u\n", sb->s_desc_size);
290 if (sb->s_reserved_gdt_blocks)
291 fprintf(f, "Reserved GDT blocks: %u\n",
292 sb->s_reserved_gdt_blocks);
293 fprintf(f, "Blocks per group: %u\n", sb->s_blocks_per_group);
294 if (ext2fs_has_feature_bigalloc(sb))
295 fprintf(f, "Clusters per group: %u\n",
296 sb->s_clusters_per_group);
297 else
298 fprintf(f, "Fragments per group: %u\n",
299 sb->s_clusters_per_group);
300 fprintf(f, "Inodes per group: %u\n", sb->s_inodes_per_group);
301 fprintf(f, "Inode blocks per group: %u\n", inode_blocks_per_group);
302 if (sb->s_raid_stride)
303 fprintf(f, "RAID stride: %u\n",
304 sb->s_raid_stride);
305 if (sb->s_raid_stripe_width)
306 fprintf(f, "RAID stripe width: %u\n",
307 sb->s_raid_stripe_width);
308 if (sb->s_first_meta_bg)
309 fprintf(f, "First meta block group: %u\n",
310 sb->s_first_meta_bg);
311 if (sb->s_log_groups_per_flex)
312 fprintf(f, "Flex block group size: %u\n",
313 1 << sb->s_log_groups_per_flex);
314 if (sb->s_mkfs_time) {
315 tm = sb->s_mkfs_time;
316 fprintf(f, "Filesystem created: %s", ctime(&tm));
317 }
318 tm = sb->s_mtime;
319 fprintf(f, "Last mount time: %s",
320 sb->s_mtime ? ctime(&tm) : "n/a\n");
321 tm = sb->s_wtime;
322 fprintf(f, "Last write time: %s", ctime(&tm));
323 fprintf(f, "Mount count: %u\n", sb->s_mnt_count);
324 fprintf(f, "Maximum mount count: %d\n", sb->s_max_mnt_count);
325 tm = sb->s_lastcheck;
326 fprintf(f, "Last checked: %s", ctime(&tm));
327 fprintf(f, "Check interval: %u (%s)\n", sb->s_checkinterval,
328 interval_string(sb->s_checkinterval));
329 if (sb->s_checkinterval)
330 {
331 time_t next;
332
333 next = sb->s_lastcheck + sb->s_checkinterval;
334 fprintf(f, "Next check after: %s", ctime(&next));
335 }
336 #define POW2(x) ((__u64) 1 << (x))
337 if (sb->s_kbytes_written) {
338 fprintf(f, "Lifetime writes: ");
339 if (sb->s_kbytes_written < POW2(13))
340 fprintf(f, "%llu kB\n", sb->s_kbytes_written);
341 else if (sb->s_kbytes_written < POW2(23))
342 fprintf(f, "%llu MB\n",
343 (sb->s_kbytes_written + POW2(9)) >> 10);
344 else if (sb->s_kbytes_written < POW2(33))
345 fprintf(f, "%llu GB\n",
346 (sb->s_kbytes_written + POW2(19)) >> 20);
347 else if (sb->s_kbytes_written < POW2(43))
348 fprintf(f, "%llu TB\n",
349 (sb->s_kbytes_written + POW2(29)) >> 30);
350 else
351 fprintf(f, "%llu PB\n",
352 (sb->s_kbytes_written + POW2(39)) >> 40);
353 }
354 fprintf(f, "Reserved blocks uid: ");
355 print_user(sb->s_def_resuid, f);
356 fprintf(f, "Reserved blocks gid: ");
357 print_group(sb->s_def_resgid, f);
358 if (sb->s_rev_level >= EXT2_DYNAMIC_REV) {
359 fprintf(f, "First inode: %d\n", sb->s_first_ino);
360 fprintf(f, "Inode size: %d\n", sb->s_inode_size);
361 if (sb->s_min_extra_isize)
362 fprintf(f, "Required extra isize: %d\n",
363 sb->s_min_extra_isize);
364 if (sb->s_want_extra_isize)
365 fprintf(f, "Desired extra isize: %d\n",
366 sb->s_want_extra_isize);
367 }
368 if (!e2p_is_null_uuid(sb->s_journal_uuid))
369 fprintf(f, "Journal UUID: %s\n",
370 e2p_uuid2str(sb->s_journal_uuid));
371 if (sb->s_journal_inum)
372 fprintf(f, "Journal inode: %u\n",
373 sb->s_journal_inum);
374 if (sb->s_journal_dev)
375 fprintf(f, "Journal device: 0x%04x\n",
376 sb->s_journal_dev);
377 if (sb->s_last_orphan)
378 fprintf(f, "First orphan inode: %u\n",
379 sb->s_last_orphan);
380 if (ext2fs_has_feature_dir_index(sb) ||
381 sb->s_def_hash_version)
382 fprintf(f, "Default directory hash: %s\n",
383 e2p_hash2string(sb->s_def_hash_version));
384 if (!e2p_is_null_uuid(sb->s_hash_seed))
385 fprintf(f, "Directory Hash Seed: %s\n",
386 e2p_uuid2str(sb->s_hash_seed));
387 if (sb->s_jnl_backup_type) {
388 fprintf(f, "Journal backup: ");
389 switch (sb->s_jnl_backup_type) {
390 case 1:
391 fprintf(f, "inode blocks\n");
392 break;
393 default:
394 fprintf(f, "type %u\n", sb->s_jnl_backup_type);
395 }
396 }
397 if (sb->s_backup_bgs[0] || sb->s_backup_bgs[1]) {
398 fprintf(f, "Backup block groups: ");
399 if (sb->s_backup_bgs[0])
400 fprintf(f, "%u ", sb->s_backup_bgs[0]);
401 if (sb->s_backup_bgs[1])
402 fprintf(f, "%u ", sb->s_backup_bgs[1]);
403 fputc('\n', f);
404 }
405 if (sb->s_snapshot_inum) {
406 fprintf(f, "Snapshot inode: %u\n",
407 sb->s_snapshot_inum);
408 fprintf(f, "Snapshot ID: %u\n",
409 sb->s_snapshot_id);
410 fprintf(f, "Snapshot reserved blocks: %llu\n",
411 sb->s_snapshot_r_blocks_count);
412 }
413 if (sb->s_snapshot_list)
414 fprintf(f, "Snapshot list head: %u\n",
415 sb->s_snapshot_list);
416 if (sb->s_error_count)
417 fprintf(f, "FS Error count: %u\n",
418 sb->s_error_count);
419 if (sb->s_first_error_time) {
420 tm = sb->s_first_error_time;
421 fprintf(f, "First error time: %s", ctime(&tm));
422 memset(buf, 0, sizeof(buf));
423 strncpy(buf, (char *)sb->s_first_error_func,
424 sizeof(sb->s_first_error_func));
425 fprintf(f, "First error function: %s\n", buf);
426 fprintf(f, "First error line #: %u\n",
427 sb->s_first_error_line);
428 fprintf(f, "First error inode #: %u\n",
429 sb->s_first_error_ino);
430 fprintf(f, "First error block #: %llu\n",
431 sb->s_first_error_block);
432 }
433 if (sb->s_last_error_time) {
434 tm = sb->s_last_error_time;
435 fprintf(f, "Last error time: %s", ctime(&tm));
436 memset(buf, 0, sizeof(buf));
437 strncpy(buf, (char *)sb->s_last_error_func,
438 sizeof(sb->s_last_error_func));
439 fprintf(f, "Last error function: %s\n", buf);
440 fprintf(f, "Last error line #: %u\n",
441 sb->s_last_error_line);
442 fprintf(f, "Last error inode #: %u\n",
443 sb->s_last_error_ino);
444 fprintf(f, "Last error block #: %llu\n",
445 sb->s_last_error_block);
446 }
447 if (ext2fs_has_feature_mmp(sb)) {
448 fprintf(f, "MMP block number: %llu\n",
449 (long long)sb->s_mmp_block);
450 fprintf(f, "MMP update interval: %u\n",
451 sb->s_mmp_update_interval);
452 }
453 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
454 if (*quota_sb_inump(sb, qtype) != 0)
455 fprintf(f, "%-26s%u\n",
456 quota_type2prefix(qtype),
457 *quota_sb_inump(sb, qtype));
458 }
459
460 if (ext2fs_has_feature_metadata_csum(sb)) {
461 fprintf(f, "Checksum type: %s\n",
462 checksum_type(sb->s_checksum_type));
463 fprintf(f, "Checksum: 0x%08x\n",
464 sb->s_checksum);
465 }
466 if (!e2p_is_null_uuid(sb->s_encrypt_pw_salt))
467 fprintf(f, "Encryption PW Salt: %s\n",
468 e2p_uuid2str(sb->s_encrypt_pw_salt));
469
470 if (ext2fs_has_feature_csum_seed(sb))
471 fprintf(f, "Checksum seed: 0x%08x\n",
472 sb->s_checksum_seed);
473 }
474
list_super(struct ext2_super_block * s)475 void list_super (struct ext2_super_block * s)
476 {
477 list_super2(s, stdout);
478 }
479
480