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
print_user(unsigned short uid,FILE * f)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
print_group(unsigned short gid,FILE * f)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
interval_string(unsigned int secs)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
print_features(struct ext2_super_block * s,FILE * f)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
print_mntopts(struct ext2_super_block * s,FILE * f)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
print_super_flags(struct ext2_super_block * s,FILE * f)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
list_super2(struct ext2_super_block * sb,FILE * f)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_log_groups_per_flex)
246 fprintf(f, "Flex block group size: %u\n",
247 1 << sb->s_log_groups_per_flex);
248 if (sb->s_mkfs_time) {
249 tm = sb->s_mkfs_time;
250 fprintf(f, "Filesystem created: %s", ctime(&tm));
251 }
252 tm = sb->s_mtime;
253 fprintf(f, "Last mount time: %s",
254 sb->s_mtime ? ctime(&tm) : "n/a\n");
255 tm = sb->s_wtime;
256 fprintf(f, "Last write time: %s", ctime(&tm));
257 fprintf(f, "Mount count: %u\n", sb->s_mnt_count);
258 fprintf(f, "Maximum mount count: %d\n", sb->s_max_mnt_count);
259 tm = sb->s_lastcheck;
260 fprintf(f, "Last checked: %s", ctime(&tm));
261 fprintf(f, "Check interval: %u (%s)\n", sb->s_checkinterval,
262 interval_string(sb->s_checkinterval));
263 if (sb->s_checkinterval)
264 {
265 time_t next;
266
267 next = sb->s_lastcheck + sb->s_checkinterval;
268 fprintf(f, "Next check after: %s", ctime(&next));
269 }
270 #define POW2(x) ((__u64) 1 << (x))
271 if (sb->s_kbytes_written) {
272 fprintf(f, "Lifetime writes: ");
273 if (sb->s_kbytes_written < POW2(13))
274 fprintf(f, "%llu kB\n", sb->s_kbytes_written);
275 else if (sb->s_kbytes_written < POW2(23))
276 fprintf(f, "%llu MB\n",
277 (sb->s_kbytes_written + POW2(9)) >> 10);
278 else if (sb->s_kbytes_written < POW2(33))
279 fprintf(f, "%llu GB\n",
280 (sb->s_kbytes_written + POW2(19)) >> 20);
281 else if (sb->s_kbytes_written < POW2(43))
282 fprintf(f, "%llu TB\n",
283 (sb->s_kbytes_written + POW2(29)) >> 30);
284 else
285 fprintf(f, "%llu PB\n",
286 (sb->s_kbytes_written + POW2(39)) >> 40);
287 }
288 fprintf(f, "Reserved blocks uid: ");
289 print_user(sb->s_def_resuid, f);
290 fprintf(f, "Reserved blocks gid: ");
291 print_group(sb->s_def_resgid, f);
292 if (sb->s_rev_level >= EXT2_DYNAMIC_REV) {
293 fprintf(f, "First inode: %d\n", sb->s_first_ino);
294 fprintf(f, "Inode size: %d\n", sb->s_inode_size);
295 if (sb->s_min_extra_isize)
296 fprintf(f, "Required extra isize: %d\n",
297 sb->s_min_extra_isize);
298 if (sb->s_want_extra_isize)
299 fprintf(f, "Desired extra isize: %d\n",
300 sb->s_want_extra_isize);
301 }
302 if (!e2p_is_null_uuid(sb->s_journal_uuid))
303 fprintf(f, "Journal UUID: %s\n",
304 e2p_uuid2str(sb->s_journal_uuid));
305 if (sb->s_journal_inum)
306 fprintf(f, "Journal inode: %u\n",
307 sb->s_journal_inum);
308 if (sb->s_journal_dev)
309 fprintf(f, "Journal device: 0x%04x\n",
310 sb->s_journal_dev);
311 if (sb->s_last_orphan)
312 fprintf(f, "First orphan inode: %u\n",
313 sb->s_last_orphan);
314 if ((sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) ||
315 sb->s_def_hash_version)
316 fprintf(f, "Default directory hash: %s\n",
317 e2p_hash2string(sb->s_def_hash_version));
318 if (!e2p_is_null_uuid(sb->s_hash_seed))
319 fprintf(f, "Directory Hash Seed: %s\n",
320 e2p_uuid2str(sb->s_hash_seed));
321 if (sb->s_jnl_backup_type) {
322 fprintf(f, "Journal backup: ");
323 switch (sb->s_jnl_backup_type) {
324 case 1:
325 fprintf(f, "inode blocks\n");
326 break;
327 default:
328 fprintf(f, "type %u\n", sb->s_jnl_backup_type);
329 }
330 }
331 }
332
list_super(struct ext2_super_block * s)333 void list_super (struct ext2_super_block * s)
334 {
335 list_super2(s, stdout);
336 }
337
338