/*
* ls.c - List the contents of an ext2fs superblock
*
* Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
* Laboratoire MASI, Institut Blaise Pascal
* Universite Pierre et Marie Curie (Paris VI)
*
* Copyright (C) 1995, 1996, 1997 Theodore Ts'o <tytso@mit.edu>
*
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Library
* General Public License, version 2.
* %End-Header%
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <string.h>
#include <grp.h>
#include <pwd.h>
#include <time.h>
#include "e2p.h"
static void print_user (unsigned short uid, FILE *f)
{
struct passwd *pw;
fprintf(f, "%u ", uid);
pw = getpwuid (uid);
if (pw == NULL)
fprintf(f, "(user unknown)\n");
else
fprintf(f, "(user %s)\n", pw->pw_name);
}
static void print_group (unsigned short gid, FILE *f)
{
struct group *gr;
fprintf(f, "%u ", gid);
gr = getgrgid (gid);
if (gr == NULL)
fprintf(f, "(group unknown)\n");
else
fprintf(f, "(group %s)\n", gr->gr_name);
}
#define MONTH_INT (86400 * 30)
#define WEEK_INT (86400 * 7)
#define DAY_INT (86400)
#define HOUR_INT (60 * 60)
#define MINUTE_INT (60)
static const char *interval_string(unsigned int secs)
{
static char buf[256], tmp[80];
int hr, min, num;
buf[0] = 0;
if (secs == 0)
return "<none>";
if (secs >= MONTH_INT) {
num = secs / MONTH_INT;
secs -= num*MONTH_INT;
sprintf(buf, "%d month%s", num, (num>1) ? "s" : "");
}
if (secs >= WEEK_INT) {
num = secs / WEEK_INT;
secs -= num*WEEK_INT;
sprintf(tmp, "%s%d week%s", buf[0] ? ", " : "",
num, (num>1) ? "s" : "");
strcat(buf, tmp);
}
if (secs >= DAY_INT) {
num = secs / DAY_INT;
secs -= num*DAY_INT;
sprintf(tmp, "%s%d day%s", buf[0] ? ", " : "",
num, (num>1) ? "s" : "");
strcat(buf, tmp);
}
if (secs > 0) {
hr = secs / HOUR_INT;
secs -= hr*HOUR_INT;
min = secs / MINUTE_INT;
secs -= min*MINUTE_INT;
sprintf(tmp, "%s%d:%02d:%02d", buf[0] ? ", " : "",
hr, min, secs);
strcat(buf, tmp);
}
return buf;
}
static void print_features(struct ext2_super_block * s, FILE *f)
{
#ifdef EXT2_DYNAMIC_REV
int i, j, printed=0;
__u32 *mask = &s->s_feature_compat, m;
fprintf(f, "Filesystem features: ");
for (i=0; i <3; i++,mask++) {
for (j=0,m=1; j < 32; j++, m<<=1) {
if (*mask & m) {
fprintf(f, " %s", e2p_feature2string(i, m));
printed++;
}
}
}
if (printed == 0)
fprintf(f, " (none)");
fprintf(f, "\n");
#endif
}
static void print_mntopts(struct ext2_super_block * s, FILE *f)
{
#ifdef EXT2_DYNAMIC_REV
int i, printed=0;
__u32 mask = s->s_default_mount_opts, m;
fprintf(f, "Default mount options: ");
if (mask & EXT3_DEFM_JMODE) {
fprintf(f, " %s", e2p_mntopt2string(mask & EXT3_DEFM_JMODE));
printed++;
}
for (i=0,m=1; i < 32; i++, m<<=1) {
if (m & EXT3_DEFM_JMODE)
continue;
if (mask & m) {
fprintf(f, " %s", e2p_mntopt2string(m));
printed++;
}
}
if (printed == 0)
fprintf(f, " (none)");
fprintf(f, "\n");
#endif
}
static void print_super_flags(struct ext2_super_block * s, FILE *f)
{
int flags_found = 0;
if (s->s_flags == 0)
return;
fputs("Filesystem flags: ", f);
if (s->s_flags & EXT2_FLAGS_SIGNED_HASH) {
fputs("signed_directory_hash ", f);
flags_found++;
}
if (s->s_flags & EXT2_FLAGS_UNSIGNED_HASH) {
fputs("unsigned_directory_hash ", f);
flags_found++;
}
if (s->s_flags & EXT2_FLAGS_TEST_FILESYS) {
fputs("test_filesystem ", f);
flags_found++;
}
if (flags_found)
fputs("\n", f);
else
fputs("(none)\n", f);
}
static __u64 e2p_blocks_count(struct ext2_super_block *super)
{
return super->s_blocks_count |
(super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT ?
(__u64) super->s_blocks_count_hi << 32 : 0);
}
static __u64 e2p_r_blocks_count(struct ext2_super_block *super)
{
return super->s_r_blocks_count |
(super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT ?
(__u64) super->s_r_blocks_count_hi << 32 : 0);
}
static __u64 e2p_free_blocks_count(struct ext2_super_block *super)
{
return super->s_free_blocks_count |
(super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT ?
(__u64) super->s_free_blocks_hi << 32 : 0);
}
#ifndef EXT2_INODE_SIZE
#define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
#endif
#ifndef EXT2_GOOD_OLD_REV
#define EXT2_GOOD_OLD_REV 0
#endif
void list_super2(struct ext2_super_block * sb, FILE *f)
{
int inode_blocks_per_group;
char buf[80], *str;
time_t tm;
inode_blocks_per_group = (((sb->s_inodes_per_group *
EXT2_INODE_SIZE(sb)) +
EXT2_BLOCK_SIZE(sb) - 1) /
EXT2_BLOCK_SIZE(sb));
if (sb->s_volume_name[0]) {
memset(buf, 0, sizeof(buf));
strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name));
} else
strcpy(buf, "<none>");
fprintf(f, "Filesystem volume name: %s\n", buf);
if (sb->s_last_mounted[0]) {
memset(buf, 0, sizeof(buf));
strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted));
} else
strcpy(buf, "<not available>");
fprintf(f, "Last mounted on: %s\n", buf);
fprintf(f, "Filesystem UUID: %s\n", e2p_uuid2str(sb->s_uuid));
fprintf(f, "Filesystem magic number: 0x%04X\n", sb->s_magic);
fprintf(f, "Filesystem revision #: %d", sb->s_rev_level);
if (sb->s_rev_level == EXT2_GOOD_OLD_REV) {
fprintf(f, " (original)\n");
#ifdef EXT2_DYNAMIC_REV
} else if (sb->s_rev_level == EXT2_DYNAMIC_REV) {
fprintf(f, " (dynamic)\n");
#endif
} else
fprintf(f, " (unknown)\n");
print_features(sb, f);
print_super_flags(sb, f);
print_mntopts(sb, f);
if (sb->s_mount_opts[0])
fprintf(f, "Mount options: %s\n", sb->s_mount_opts);
fprintf(f, "Filesystem state: ");
print_fs_state (f, sb->s_state);
fprintf(f, "\n");
fprintf(f, "Errors behavior: ");
print_fs_errors(f, sb->s_errors);
fprintf(f, "\n");
str = e2p_os2string(sb->s_creator_os);
fprintf(f, "Filesystem OS type: %s\n", str);
free(str);
fprintf(f, "Inode count: %u\n", sb->s_inodes_count);
fprintf(f, "Block count: %llu\n", e2p_blocks_count(sb));
fprintf(f, "Reserved block count: %llu\n", e2p_r_blocks_count(sb));
if (sb->s_overhead_blocks)
fprintf(f, "Overhead blocks: %u\n",
sb->s_overhead_blocks);
fprintf(f, "Free blocks: %llu\n", e2p_free_blocks_count(sb));
fprintf(f, "Free inodes: %u\n", sb->s_free_inodes_count);
fprintf(f, "First block: %u\n", sb->s_first_data_block);
fprintf(f, "Block size: %u\n", EXT2_BLOCK_SIZE(sb));
if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_BIGALLOC)
fprintf(f, "Cluster size: %u\n",
EXT2_CLUSTER_SIZE(sb));
else
fprintf(f, "Fragment size: %u\n",
EXT2_CLUSTER_SIZE(sb));
if (sb->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT)
fprintf(f, "Group descriptor size: %u\n", sb->s_desc_size);
if (sb->s_reserved_gdt_blocks)
fprintf(f, "Reserved GDT blocks: %u\n",
sb->s_reserved_gdt_blocks);
fprintf(f, "Blocks per group: %u\n", sb->s_blocks_per_group);
if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_BIGALLOC)
fprintf(f, "Clusters per group: %u\n",
sb->s_clusters_per_group);
else
fprintf(f, "Fragments per group: %u\n",
sb->s_clusters_per_group);
fprintf(f, "Inodes per group: %u\n", sb->s_inodes_per_group);
fprintf(f, "Inode blocks per group: %u\n", inode_blocks_per_group);
if (sb->s_raid_stride)
fprintf(f, "RAID stride: %u\n",
sb->s_raid_stride);
if (sb->s_raid_stripe_width)
fprintf(f, "RAID stripe width: %u\n",
sb->s_raid_stripe_width);
if (sb->s_first_meta_bg)
fprintf(f, "First meta block group: %u\n",
sb->s_first_meta_bg);
if (sb->s_log_groups_per_flex)
fprintf(f, "Flex block group size: %u\n",
1 << sb->s_log_groups_per_flex);
if (sb->s_mkfs_time) {
tm = sb->s_mkfs_time;
fprintf(f, "Filesystem created: %s", ctime(&tm));
}
tm = sb->s_mtime;
fprintf(f, "Last mount time: %s",
sb->s_mtime ? ctime(&tm) : "n/a\n");
tm = sb->s_wtime;
fprintf(f, "Last write time: %s", ctime(&tm));
fprintf(f, "Mount count: %u\n", sb->s_mnt_count);
fprintf(f, "Maximum mount count: %d\n", sb->s_max_mnt_count);
tm = sb->s_lastcheck;
fprintf(f, "Last checked: %s", ctime(&tm));
fprintf(f, "Check interval: %u (%s)\n", sb->s_checkinterval,
interval_string(sb->s_checkinterval));
if (sb->s_checkinterval)
{
time_t next;
next = sb->s_lastcheck + sb->s_checkinterval;
fprintf(f, "Next check after: %s", ctime(&next));
}
#define POW2(x) ((__u64) 1 << (x))
if (sb->s_kbytes_written) {
fprintf(f, "Lifetime writes: ");
if (sb->s_kbytes_written < POW2(13))
fprintf(f, "%llu kB\n", sb->s_kbytes_written);
else if (sb->s_kbytes_written < POW2(23))
fprintf(f, "%llu MB\n",
(sb->s_kbytes_written + POW2(9)) >> 10);
else if (sb->s_kbytes_written < POW2(33))
fprintf(f, "%llu GB\n",
(sb->s_kbytes_written + POW2(19)) >> 20);
else if (sb->s_kbytes_written < POW2(43))
fprintf(f, "%llu TB\n",
(sb->s_kbytes_written + POW2(29)) >> 30);
else
fprintf(f, "%llu PB\n",
(sb->s_kbytes_written + POW2(39)) >> 40);
}
fprintf(f, "Reserved blocks uid: ");
print_user(sb->s_def_resuid, f);
fprintf(f, "Reserved blocks gid: ");
print_group(sb->s_def_resgid, f);
if (sb->s_rev_level >= EXT2_DYNAMIC_REV) {
fprintf(f, "First inode: %d\n", sb->s_first_ino);
fprintf(f, "Inode size: %d\n", sb->s_inode_size);
if (sb->s_min_extra_isize)
fprintf(f, "Required extra isize: %d\n",
sb->s_min_extra_isize);
if (sb->s_want_extra_isize)
fprintf(f, "Desired extra isize: %d\n",
sb->s_want_extra_isize);
}
if (!e2p_is_null_uuid(sb->s_journal_uuid))
fprintf(f, "Journal UUID: %s\n",
e2p_uuid2str(sb->s_journal_uuid));
if (sb->s_journal_inum)
fprintf(f, "Journal inode: %u\n",
sb->s_journal_inum);
if (sb->s_journal_dev)
fprintf(f, "Journal device: 0x%04x\n",
sb->s_journal_dev);
if (sb->s_last_orphan)
fprintf(f, "First orphan inode: %u\n",
sb->s_last_orphan);
if ((sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) ||
sb->s_def_hash_version)
fprintf(f, "Default directory hash: %s\n",
e2p_hash2string(sb->s_def_hash_version));
if (!e2p_is_null_uuid(sb->s_hash_seed))
fprintf(f, "Directory Hash Seed: %s\n",
e2p_uuid2str(sb->s_hash_seed));
if (sb->s_jnl_backup_type) {
fprintf(f, "Journal backup: ");
switch (sb->s_jnl_backup_type) {
case 1:
fprintf(f, "inode blocks\n");
break;
default:
fprintf(f, "type %u\n", sb->s_jnl_backup_type);
}
}
if (sb->s_snapshot_inum) {
fprintf(f, "Snapshot inode: %u\n",
sb->s_snapshot_inum);
fprintf(f, "Snapshot ID: %u\n",
sb->s_snapshot_id);
fprintf(f, "Snapshot reserved blocks: %llu\n",
sb->s_snapshot_r_blocks_count);
}
if (sb->s_snapshot_list)
fprintf(f, "Snapshot list head: %u\n",
sb->s_snapshot_list);
if (sb->s_error_count)
fprintf(f, "FS Error count: %u\n",
sb->s_error_count);
if (sb->s_first_error_time) {
tm = sb->s_first_error_time;
fprintf(f, "First error time: %s", ctime(&tm));
memset(buf, 0, sizeof(buf));
strncpy(buf, (char *)sb->s_first_error_func,
sizeof(sb->s_first_error_func));
fprintf(f, "First error function: %s\n", buf);
fprintf(f, "First error line #: %u\n",
sb->s_first_error_line);
fprintf(f, "First error inode #: %u\n",
sb->s_first_error_ino);
fprintf(f, "First error block #: %llu\n",
sb->s_first_error_block);
}
if (sb->s_last_error_time) {
tm = sb->s_last_error_time;
fprintf(f, "Last error time: %s", ctime(&tm));
memset(buf, 0, sizeof(buf));
strncpy(buf, (char *)sb->s_last_error_func,
sizeof(sb->s_last_error_func));
fprintf(f, "Last error function: %s\n", buf);
fprintf(f, "Last error line #: %u\n",
sb->s_last_error_line);
fprintf(f, "Last error inode #: %u\n",
sb->s_last_error_ino);
fprintf(f, "Last error block #: %llu\n",
sb->s_last_error_block);
}
if (sb->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) {
fprintf(f, "MMP block number: %llu\n",
(long long)sb->s_mmp_block);
fprintf(f, "MMP update interval: %u\n",
sb->s_mmp_update_interval);
}
if (sb->s_usr_quota_inum)
fprintf(f, "User quota inode: %u\n",
sb->s_usr_quota_inum);
if (sb->s_grp_quota_inum)
fprintf(f, "Group quota inode: %u\n",
sb->s_grp_quota_inum);
if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
fprintf(f, "Checksum: 0x%08x\n",
sb->s_checksum);
}
void list_super (struct ext2_super_block * s)
{
list_super2(s, stdout);
}