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
169
170 #ifndef EXT2_INODE_SIZE
171 #define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
172 #endif
173
174 #ifndef EXT2_GOOD_OLD_REV
175 #define EXT2_GOOD_OLD_REV 0
176 #endif
177
list_super2(struct ext2_super_block * sb,FILE * f)178 void list_super2(struct ext2_super_block * sb, FILE *f)
179 {
180 int inode_blocks_per_group;
181 char buf[80], *str;
182 time_t tm;
183
184 inode_blocks_per_group = (((sb->s_inodes_per_group *
185 EXT2_INODE_SIZE(sb)) +
186 EXT2_BLOCK_SIZE(sb) - 1) /
187 EXT2_BLOCK_SIZE(sb));
188 if (sb->s_volume_name[0]) {
189 memset(buf, 0, sizeof(buf));
190 strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name));
191 } else
192 strcpy(buf, "<none>");
193 fprintf(f, "Filesystem volume name: %s\n", buf);
194 if (sb->s_last_mounted[0]) {
195 memset(buf, 0, sizeof(buf));
196 strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted));
197 } else
198 strcpy(buf, "<not available>");
199 fprintf(f, "Last mounted on: %s\n", buf);
200 fprintf(f, "Filesystem UUID: %s\n", e2p_uuid2str(sb->s_uuid));
201 fprintf(f, "Filesystem magic number: 0x%04X\n", sb->s_magic);
202 fprintf(f, "Filesystem revision #: %d", sb->s_rev_level);
203 if (sb->s_rev_level == EXT2_GOOD_OLD_REV) {
204 fprintf(f, " (original)\n");
205 #ifdef EXT2_DYNAMIC_REV
206 } else if (sb->s_rev_level == EXT2_DYNAMIC_REV) {
207 fprintf(f, " (dynamic)\n");
208 #endif
209 } else
210 fprintf(f, " (unknown)\n");
211 print_features(sb, f);
212 print_super_flags(sb, f);
213 print_mntopts(sb, f);
214 if (sb->s_mount_opts[0])
215 fprintf(f, "Mount options: %s\n", sb->s_mount_opts);
216 fprintf(f, "Filesystem state: ");
217 print_fs_state (f, sb->s_state);
218 fprintf(f, "\n");
219 fprintf(f, "Errors behavior: ");
220 print_fs_errors(f, sb->s_errors);
221 fprintf(f, "\n");
222 str = e2p_os2string(sb->s_creator_os);
223 fprintf(f, "Filesystem OS type: %s\n", str);
224 free(str);
225 fprintf(f, "Inode count: %u\n", sb->s_inodes_count);
226 fprintf(f, "Block count: %u\n", sb->s_blocks_count);
227 fprintf(f, "Reserved block count: %u\n", sb->s_r_blocks_count);
228 fprintf(f, "Free blocks: %u\n", sb->s_free_blocks_count);
229 fprintf(f, "Free inodes: %u\n", sb->s_free_inodes_count);
230 fprintf(f, "First block: %u\n", sb->s_first_data_block);
231 fprintf(f, "Block size: %u\n", EXT2_BLOCK_SIZE(sb));
232 fprintf(f, "Fragment size: %u\n", EXT2_FRAG_SIZE(sb));
233 if (sb->s_reserved_gdt_blocks)
234 fprintf(f, "Reserved GDT blocks: %u\n",
235 sb->s_reserved_gdt_blocks);
236 fprintf(f, "Blocks per group: %u\n", sb->s_blocks_per_group);
237 fprintf(f, "Fragments per group: %u\n", sb->s_frags_per_group);
238 fprintf(f, "Inodes per group: %u\n", sb->s_inodes_per_group);
239 fprintf(f, "Inode blocks per group: %u\n", inode_blocks_per_group);
240 if (sb->s_raid_stride)
241 fprintf(f, "RAID stride: %u\n",
242 sb->s_raid_stride);
243 if (sb->s_raid_stripe_width)
244 fprintf(f, "RAID stripe width: %u\n",
245 sb->s_raid_stripe_width);
246 if (sb->s_first_meta_bg)
247 fprintf(f, "First meta block group: %u\n",
248 sb->s_first_meta_bg);
249 if (sb->s_log_groups_per_flex)
250 fprintf(f, "Flex block group size: %u\n",
251 1 << sb->s_log_groups_per_flex);
252 if (sb->s_mkfs_time) {
253 tm = sb->s_mkfs_time;
254 fprintf(f, "Filesystem created: %s", ctime(&tm));
255 }
256 tm = sb->s_mtime;
257 fprintf(f, "Last mount time: %s",
258 sb->s_mtime ? ctime(&tm) : "n/a\n");
259 tm = sb->s_wtime;
260 fprintf(f, "Last write time: %s", ctime(&tm));
261 fprintf(f, "Mount count: %u\n", sb->s_mnt_count);
262 fprintf(f, "Maximum mount count: %d\n", sb->s_max_mnt_count);
263 tm = sb->s_lastcheck;
264 fprintf(f, "Last checked: %s", ctime(&tm));
265 fprintf(f, "Check interval: %u (%s)\n", sb->s_checkinterval,
266 interval_string(sb->s_checkinterval));
267 if (sb->s_checkinterval)
268 {
269 time_t next;
270
271 next = sb->s_lastcheck + sb->s_checkinterval;
272 fprintf(f, "Next check after: %s", ctime(&next));
273 }
274 #define POW2(x) ((__u64) 1 << (x))
275 if (sb->s_kbytes_written) {
276 fprintf(f, "Lifetime writes: ");
277 if (sb->s_kbytes_written < POW2(13))
278 fprintf(f, "%llu kB\n", sb->s_kbytes_written);
279 else if (sb->s_kbytes_written < POW2(23))
280 fprintf(f, "%llu MB\n",
281 (sb->s_kbytes_written + POW2(9)) >> 10);
282 else if (sb->s_kbytes_written < POW2(33))
283 fprintf(f, "%llu GB\n",
284 (sb->s_kbytes_written + POW2(19)) >> 20);
285 else if (sb->s_kbytes_written < POW2(43))
286 fprintf(f, "%llu TB\n",
287 (sb->s_kbytes_written + POW2(29)) >> 30);
288 else
289 fprintf(f, "%llu PB\n",
290 (sb->s_kbytes_written + POW2(39)) >> 40);
291 }
292 fprintf(f, "Reserved blocks uid: ");
293 print_user(sb->s_def_resuid, f);
294 fprintf(f, "Reserved blocks gid: ");
295 print_group(sb->s_def_resgid, f);
296 if (sb->s_rev_level >= EXT2_DYNAMIC_REV) {
297 fprintf(f, "First inode: %d\n", sb->s_first_ino);
298 fprintf(f, "Inode size: %d\n", sb->s_inode_size);
299 if (sb->s_min_extra_isize)
300 fprintf(f, "Required extra isize: %d\n",
301 sb->s_min_extra_isize);
302 if (sb->s_want_extra_isize)
303 fprintf(f, "Desired extra isize: %d\n",
304 sb->s_want_extra_isize);
305 }
306 if (!e2p_is_null_uuid(sb->s_journal_uuid))
307 fprintf(f, "Journal UUID: %s\n",
308 e2p_uuid2str(sb->s_journal_uuid));
309 if (sb->s_journal_inum)
310 fprintf(f, "Journal inode: %u\n",
311 sb->s_journal_inum);
312 if (sb->s_journal_dev)
313 fprintf(f, "Journal device: 0x%04x\n",
314 sb->s_journal_dev);
315 if (sb->s_last_orphan)
316 fprintf(f, "First orphan inode: %u\n",
317 sb->s_last_orphan);
318 if ((sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) ||
319 sb->s_def_hash_version)
320 fprintf(f, "Default directory hash: %s\n",
321 e2p_hash2string(sb->s_def_hash_version));
322 if (!e2p_is_null_uuid(sb->s_hash_seed))
323 fprintf(f, "Directory Hash Seed: %s\n",
324 e2p_uuid2str(sb->s_hash_seed));
325 if (sb->s_jnl_backup_type) {
326 fprintf(f, "Journal backup: ");
327 switch (sb->s_jnl_backup_type) {
328 case 1:
329 fprintf(f, "inode blocks\n");
330 break;
331 default:
332 fprintf(f, "type %u\n", sb->s_jnl_backup_type);
333 }
334 }
335 if (sb->s_snapshot_inum) {
336 fprintf(f, "Snapshot inode: %u\n",
337 sb->s_snapshot_inum);
338 fprintf(f, "Snapshot ID: %u\n",
339 sb->s_snapshot_id);
340 fprintf(f, "Snapshot reserved blocks: %llu\n",
341 sb->s_snapshot_r_blocks_count);
342 }
343 if (sb->s_snapshot_list)
344 fprintf(f, "Snapshot list head: %u\n",
345 sb->s_snapshot_list);
346 if (sb->s_error_count)
347 fprintf(f, "FS Error count: %u\n",
348 sb->s_error_count);
349 if (sb->s_first_error_time) {
350 tm = sb->s_first_error_time;
351 fprintf(f, "First error time: %s", ctime(&tm));
352 memset(buf, 0, sizeof(buf));
353 strncpy(buf, sb->s_first_error_func,
354 sizeof(sb->s_first_error_func));
355 fprintf(f, "First error function: %s\n", buf);
356 fprintf(f, "First error line #: %u\n",
357 sb->s_first_error_line);
358 fprintf(f, "First error inode #: %u\n",
359 sb->s_first_error_ino);
360 fprintf(f, "First error block #: %llu\n",
361 sb->s_first_error_block);
362 }
363 if (sb->s_last_error_time) {
364 tm = sb->s_last_error_time;
365 fprintf(f, "Last error time: %s", ctime(&tm));
366 memset(buf, 0, sizeof(buf));
367 strncpy(buf, sb->s_last_error_func,
368 sizeof(sb->s_last_error_func));
369 fprintf(f, "Last error function: %s\n", buf);
370 fprintf(f, "Last error line #: %u\n",
371 sb->s_last_error_line);
372 fprintf(f, "Last error inode #: %u\n",
373 sb->s_last_error_ino);
374 fprintf(f, "Last error block #: %llu\n",
375 sb->s_last_error_block);
376 }
377 }
378
list_super(struct ext2_super_block * s)379 void list_super (struct ext2_super_block * s)
380 {
381 list_super2(s, stdout);
382 }
383
384