blob: e8d9d482dc2e265234443e927df41fd6821502e2 [file] [log] [blame]
Mike Frysingerde9f1f72005-04-22 02:33:37 +00001/*
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 <sys/types.h>
16#include <string.h>
17#include <grp.h>
18#include <pwd.h>
19#include <time.h>
20
21#include "e2p.h"
22
23static void print_user (unsigned short uid, FILE *f)
24{
25 struct passwd *pw;
26
27 fprintf(f, "%u ", uid);
28 pw = getpwuid (uid);
29 if (pw == NULL)
30 fprintf(f, "(user unknown)\n");
31 else
32 fprintf(f, "(user %s)\n", pw->pw_name);
33}
34
35static void print_group (unsigned short gid, FILE *f)
36{
37 struct group *gr;
38
39 fprintf(f, "%u ", gid);
40 gr = getgrgid (gid);
41 if (gr == NULL)
42 fprintf(f, "(group unknown)\n");
43 else
44 fprintf(f, "(group %s)\n", gr->gr_name);
45}
46
47#define MONTH_INT (86400 * 30)
48#define WEEK_INT (86400 * 7)
49#define DAY_INT (86400)
50#define HOUR_INT (60 * 60)
51#define MINUTE_INT (60)
52
53static const char *interval_string(unsigned int secs)
54{
55 static char buf[256], tmp[80];
56 int hr, min, num;
57
58 buf[0] = 0;
59
60 if (secs == 0)
61 return "<none>";
62
63 if (secs >= MONTH_INT) {
64 num = secs / MONTH_INT;
65 secs -= num*MONTH_INT;
66 sprintf(buf, "%d month%s", num, (num>1) ? "s" : "");
67 }
68 if (secs >= WEEK_INT) {
69 num = secs / WEEK_INT;
70 secs -= num*WEEK_INT;
71 sprintf(tmp, "%s%d week%s", buf[0] ? ", " : "",
72 num, (num>1) ? "s" : "");
73 strcat(buf, tmp);
74 }
75 if (secs >= DAY_INT) {
76 num = secs / DAY_INT;
77 secs -= num*DAY_INT;
78 sprintf(tmp, "%s%d day%s", buf[0] ? ", " : "",
79 num, (num>1) ? "s" : "");
80 strcat(buf, tmp);
81 }
82 if (secs > 0) {
83 hr = secs / HOUR_INT;
84 secs -= hr*HOUR_INT;
85 min = secs / MINUTE_INT;
86 secs -= min*MINUTE_INT;
87 sprintf(tmp, "%s%d:%02d:%02d", buf[0] ? ", " : "",
88 hr, min, secs);
89 strcat(buf, tmp);
90 }
91 return buf;
92}
93
94static void print_features(struct ext2_super_block * s, FILE *f)
95{
96#ifdef EXT2_DYNAMIC_REV
97 int i, j, printed=0;
98 __u32 *mask = &s->s_feature_compat, m;
99
100 fprintf(f, "Filesystem features: ");
101 for (i=0; i <3; i++,mask++) {
102 for (j=0,m=1; j < 32; j++, m<<=1) {
103 if (*mask & m) {
104 fprintf(f, " %s", e2p_feature2string(i, m));
105 printed++;
106 }
107 }
108 }
109 if (printed == 0)
110 fprintf(f, " (none)");
111 fprintf(f, "\n");
112#endif
113}
114
115static void print_mntopts(struct ext2_super_block * s, FILE *f)
116{
117#ifdef EXT2_DYNAMIC_REV
118 int i, printed=0;
119 __u32 mask = s->s_default_mount_opts, m;
120
121 fprintf(f, "Default mount options: ");
122 if (mask & EXT3_DEFM_JMODE) {
123 fprintf(f, " %s", e2p_mntopt2string(mask & EXT3_DEFM_JMODE));
124 printed++;
125 }
126 for (i=0,m=1; i < 32; i++, m<<=1) {
127 if (m & EXT3_DEFM_JMODE)
128 continue;
129 if (mask & m) {
130 fprintf(f, " %s", e2p_mntopt2string(m));
131 printed++;
132 }
133 }
134 if (printed == 0)
135 fprintf(f, " (none)");
136 fprintf(f, "\n");
137#endif
138}
139
140
141#ifndef EXT2_INODE_SIZE
142#define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
143#endif
144
145#ifndef EXT2_GOOD_OLD_REV
146#define EXT2_GOOD_OLD_REV 0
147#endif
148
149void list_super2(struct ext2_super_block * sb, FILE *f)
150{
151 int inode_blocks_per_group;
152 char buf[80], *str;
153 time_t tm;
154
155 inode_blocks_per_group = (((sb->s_inodes_per_group *
156 EXT2_INODE_SIZE(sb)) +
157 EXT2_BLOCK_SIZE(sb) - 1) /
158 EXT2_BLOCK_SIZE(sb));
159 if (sb->s_volume_name[0]) {
160 memset(buf, 0, sizeof(buf));
161 strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name));
162 } else
163 strcpy(buf, "<none>");
164 fprintf(f, "Filesystem volume name: %s\n", buf);
165 if (sb->s_last_mounted[0]) {
166 memset(buf, 0, sizeof(buf));
167 strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted));
168 } else
169 strcpy(buf, "<not available>");
170 fprintf(f, "Last mounted on: %s\n", buf);
171 fprintf(f, "Filesystem UUID: %s\n", e2p_uuid2str(sb->s_uuid));
172 fprintf(f, "Filesystem magic number: 0x%04X\n", sb->s_magic);
173 fprintf(f, "Filesystem revision #: %d", sb->s_rev_level);
174 if (sb->s_rev_level == EXT2_GOOD_OLD_REV) {
175 fprintf(f, " (original)\n");
176#ifdef EXT2_DYNAMIC_REV
177 } else if (sb->s_rev_level == EXT2_DYNAMIC_REV) {
178 fprintf(f, " (dynamic)\n");
179#endif
180 } else
181 fprintf(f, " (unknown)\n");
182 print_features(sb, f);
183 print_mntopts(sb, f);
184 fprintf(f, "Filesystem state: ");
185 print_fs_state (f, sb->s_state);
186 fprintf(f, "\n");
187 fprintf(f, "Errors behavior: ");
188 print_fs_errors(f, sb->s_errors);
189 fprintf(f, "\n");
190 str = e2p_os2string(sb->s_creator_os);
191 fprintf(f, "Filesystem OS type: %s\n", str);
192 free(str);
193 fprintf(f, "Inode count: %u\n", sb->s_inodes_count);
194 fprintf(f, "Block count: %u\n", sb->s_blocks_count);
195 fprintf(f, "Reserved block count: %u\n", sb->s_r_blocks_count);
196 fprintf(f, "Free blocks: %u\n", sb->s_free_blocks_count);
197 fprintf(f, "Free inodes: %u\n", sb->s_free_inodes_count);
198 fprintf(f, "First block: %u\n", sb->s_first_data_block);
199 fprintf(f, "Block size: %u\n", EXT2_BLOCK_SIZE(sb));
200 fprintf(f, "Fragment size: %u\n", EXT2_FRAG_SIZE(sb));
201 if (sb->s_reserved_gdt_blocks)
202 fprintf(f, "Reserved GDT blocks: %u\n",
203 sb->s_reserved_gdt_blocks);
204 fprintf(f, "Blocks per group: %u\n", sb->s_blocks_per_group);
205 fprintf(f, "Fragments per group: %u\n", sb->s_frags_per_group);
206 fprintf(f, "Inodes per group: %u\n", sb->s_inodes_per_group);
207 fprintf(f, "Inode blocks per group: %u\n", inode_blocks_per_group);
208 if (sb->s_first_meta_bg)
209 fprintf(f, "First meta block group: %u\n",
210 sb->s_first_meta_bg);
211 if (sb->s_mkfs_time) {
212 tm = sb->s_mkfs_time;
213 fprintf(f, "Filesystem created: %s", ctime(&tm));
214 }
215 tm = sb->s_mtime;
216 fprintf(f, "Last mount time: %s",
217 sb->s_mtime ? ctime(&tm) : "n/a\n");
218 tm = sb->s_wtime;
219 fprintf(f, "Last write time: %s", ctime(&tm));
220 fprintf(f, "Mount count: %u\n", sb->s_mnt_count);
221 fprintf(f, "Maximum mount count: %d\n", sb->s_max_mnt_count);
222 tm = sb->s_lastcheck;
223 fprintf(f, "Last checked: %s", ctime(&tm));
224 fprintf(f, "Check interval: %u (%s)\n", sb->s_checkinterval,
225 interval_string(sb->s_checkinterval));
226 if (sb->s_checkinterval)
227 {
228 time_t next;
229
230 next = sb->s_lastcheck + sb->s_checkinterval;
231 fprintf(f, "Next check after: %s", ctime(&next));
232 }
233 fprintf(f, "Reserved blocks uid: ");
234 print_user(sb->s_def_resuid, f);
235 fprintf(f, "Reserved blocks gid: ");
236 print_group(sb->s_def_resgid, f);
237 if (sb->s_rev_level >= EXT2_DYNAMIC_REV) {
238 fprintf(f, "First inode: %d\n", sb->s_first_ino);
239 fprintf(f, "Inode size: %d\n", sb->s_inode_size);
240 }
241 if (!e2p_is_null_uuid(sb->s_journal_uuid))
242 fprintf(f, "Journal UUID: %s\n",
243 e2p_uuid2str(sb->s_journal_uuid));
244 if (sb->s_journal_inum)
245 fprintf(f, "Journal inode: %u\n",
246 sb->s_journal_inum);
247 if (sb->s_journal_dev)
248 fprintf(f, "Journal device: 0x%04x\n",
249 sb->s_journal_dev);
250 if (sb->s_last_orphan)
251 fprintf(f, "First orphan inode: %u\n",
252 sb->s_last_orphan);
253 if ((sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) ||
254 sb->s_def_hash_version)
255 fprintf(f, "Default directory hash: %s\n",
256 e2p_hash2string(sb->s_def_hash_version));
257 if (!e2p_is_null_uuid(sb->s_hash_seed))
258 fprintf(f, "Directory Hash Seed: %s\n",
259 e2p_uuid2str(sb->s_hash_seed));
260 if (sb->s_jnl_backup_type) {
261 fprintf(f, "Journal backup: ");
262 switch (sb->s_jnl_backup_type) {
263 case 1:
264 fprintf(f, "inode blocks\n");
265 break;
266 default:
267 fprintf(f, "type %u\n", sb->s_jnl_backup_type);
268 }
269 }
270}
271
272void list_super (struct ext2_super_block * s)
273{
274 list_super2(s, stdout);
275}
276