mirror of https://github.com/vitalif/e2fsprogs
269 lines
7.4 KiB
C
269 lines
7.4 KiB
C
/*
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* ls.c - List the contents of an ext2fs superblock
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*
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* Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
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* Laboratoire MASI, Institut Blaise Pascal
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* Universite Pierre et Marie Curie (Paris VI)
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*
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* Copyright (C) 1995, 1996, 1997 Theodore Ts'o <tytso@mit.edu>
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*
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* This file can be redistributed under the terms of the GNU Library General
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* Public License
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*/
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#include <stdio.h>
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#include <sys/types.h>
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#include <string.h>
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#include <grp.h>
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#include <pwd.h>
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#include <time.h>
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#include "e2p.h"
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static void print_user (unsigned short uid, FILE *f)
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{
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struct passwd *pw;
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fprintf(f, "%u ", uid);
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pw = getpwuid (uid);
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if (pw == NULL)
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fprintf(f, "(user unknown)\n");
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else
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fprintf(f, "(user %s)\n", pw->pw_name);
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}
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static void print_group (unsigned short gid, FILE *f)
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{
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struct group *gr;
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fprintf(f, "%u ", gid);
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gr = getgrgid (gid);
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if (gr == NULL)
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fprintf(f, "(group unknown)\n");
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else
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fprintf(f, "(group %s)\n", gr->gr_name);
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}
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#define MONTH_INT (86400 * 30)
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#define WEEK_INT (86400 * 7)
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#define DAY_INT (86400)
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#define HOUR_INT (60 * 60)
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#define MINUTE_INT (60)
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static const char *interval_string(unsigned int secs)
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{
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static char buf[256], tmp[80];
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int hr, min, num;
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buf[0] = 0;
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if (secs == 0)
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return "<none>";
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if (secs >= MONTH_INT) {
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num = secs / MONTH_INT;
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secs -= num*MONTH_INT;
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sprintf(buf, "%d month%s", num, (num>1) ? "s" : "");
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}
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if (secs >= WEEK_INT) {
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num = secs / WEEK_INT;
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secs -= num*WEEK_INT;
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sprintf(tmp, "%s%d week%s", buf[0] ? ", " : "",
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num, (num>1) ? "s" : "");
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strcat(buf, tmp);
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}
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if (secs >= DAY_INT) {
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num = secs / DAY_INT;
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secs -= num*DAY_INT;
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sprintf(tmp, "%s%d day%s", buf[0] ? ", " : "",
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num, (num>1) ? "s" : "");
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strcat(buf, tmp);
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}
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if (secs > 0) {
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hr = secs / HOUR_INT;
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secs -= hr*HOUR_INT;
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min = secs / MINUTE_INT;
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secs -= min*MINUTE_INT;
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sprintf(tmp, "%s%d:%02d:%02d", buf[0] ? ", " : "",
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hr, min, secs);
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strcat(buf, tmp);
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}
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return buf;
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}
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static void print_features(struct ext2_super_block * s, FILE *f)
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{
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#ifdef EXT2_DYNAMIC_REV
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int i, j, printed=0;
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__u32 *mask = &s->s_feature_compat, m;
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fprintf(f, "Filesystem features: ");
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for (i=0; i <3; i++,mask++) {
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for (j=0,m=1; j < 32; j++, m<<=1) {
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if (*mask & m) {
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fprintf(f, " %s", e2p_feature2string(i, m));
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printed++;
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}
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}
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}
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if (printed == 0)
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fprintf(f, " (none)");
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fprintf(f, "\n");
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#endif
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}
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static void print_mntopts(struct ext2_super_block * s, FILE *f)
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{
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#ifdef EXT2_DYNAMIC_REV
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int i, printed=0;
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__u32 mask = s->s_default_mount_opts, m;
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fprintf(f, "Default mount options: ");
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if (mask & EXT3_DEFM_JMODE) {
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fprintf(f, " %s", e2p_mntopt2string(mask & EXT3_DEFM_JMODE));
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printed++;
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}
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for (i=0,m=1; i < 32; i++, m<<=1) {
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if (m & EXT3_DEFM_JMODE)
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continue;
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if (mask & m) {
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fprintf(f, " %s", e2p_mntopt2string(m));
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printed++;
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}
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}
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if (printed == 0)
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fprintf(f, " (none)");
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fprintf(f, "\n");
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#endif
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}
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#ifndef EXT2_INODE_SIZE
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#define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
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#endif
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#ifndef EXT2_GOOD_OLD_REV
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#define EXT2_GOOD_OLD_REV 0
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#endif
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void list_super2(struct ext2_super_block * sb, FILE *f)
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{
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int inode_blocks_per_group;
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char buf[80];
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const char *os;
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time_t tm;
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inode_blocks_per_group = (((sb->s_inodes_per_group *
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EXT2_INODE_SIZE(sb)) +
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EXT2_BLOCK_SIZE(sb) - 1) /
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EXT2_BLOCK_SIZE(sb));
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if (sb->s_volume_name[0]) {
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memset(buf, 0, sizeof(buf));
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strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name));
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} else
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strcpy(buf, "<none>");
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fprintf(f, "Filesystem volume name: %s\n", buf);
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if (sb->s_last_mounted[0]) {
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memset(buf, 0, sizeof(buf));
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strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted));
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} else
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strcpy(buf, "<not available>");
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fprintf(f, "Last mounted on: %s\n", buf);
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fprintf(f, "Filesystem UUID: %s\n", e2p_uuid2str(sb->s_uuid));
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fprintf(f, "Filesystem magic number: 0x%04X\n", sb->s_magic);
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fprintf(f, "Filesystem revision #: %d", sb->s_rev_level);
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if (sb->s_rev_level == EXT2_GOOD_OLD_REV) {
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fprintf(f, " (original)\n");
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#ifdef EXT2_DYNAMIC_REV
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} else if (sb->s_rev_level == EXT2_DYNAMIC_REV) {
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fprintf(f, " (dynamic)\n");
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#endif
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} else
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fprintf(f, " (unknown)\n");
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print_features(sb, f);
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print_mntopts(sb, f);
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fprintf(f, "Filesystem state: ");
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print_fs_state (f, sb->s_state);
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fprintf(f, "\n");
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fprintf(f, "Errors behavior: ");
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print_fs_errors(f, sb->s_errors);
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fprintf(f, "\n");
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switch (sb->s_creator_os) {
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case EXT2_OS_LINUX: os = "Linux"; break;
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case EXT2_OS_HURD: os = "GNU/Hurd"; break;
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case EXT2_OS_MASIX: os = "Masix"; break;
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default: os = "unknown"; break;
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}
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fprintf(f, "Filesystem OS type: %s\n", os);
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fprintf(f, "Inode count: %u\n", sb->s_inodes_count);
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fprintf(f, "Block count: %u\n", sb->s_blocks_count);
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fprintf(f, "Reserved block count: %u\n", sb->s_r_blocks_count);
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fprintf(f, "Free blocks: %u\n", sb->s_free_blocks_count);
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fprintf(f, "Free inodes: %u\n", sb->s_free_inodes_count);
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fprintf(f, "First block: %u\n", sb->s_first_data_block);
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fprintf(f, "Block size: %u\n", EXT2_BLOCK_SIZE(sb));
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fprintf(f, "Fragment size: %u\n", EXT2_FRAG_SIZE(sb));
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fprintf(f, "Blocks per group: %u\n", sb->s_blocks_per_group);
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fprintf(f, "Fragments per group: %u\n", sb->s_frags_per_group);
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fprintf(f, "Inodes per group: %u\n", sb->s_inodes_per_group);
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fprintf(f, "Inode blocks per group: %u\n", inode_blocks_per_group);
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if (sb->s_first_meta_bg)
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fprintf(f, "First meta block group: %u\n",
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sb->s_first_meta_bg);
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if (sb->s_mkfs_time) {
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tm = sb->s_mkfs_time;
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fprintf(f, "Filesystem created: %s", ctime(&tm));
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}
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tm = sb->s_mtime;
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fprintf(f, "Last mount time: %s",
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sb->s_mtime ? ctime(&tm) : "n/a\n");
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tm = sb->s_wtime;
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fprintf(f, "Last write time: %s", ctime(&tm));
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fprintf(f, "Mount count: %u\n", sb->s_mnt_count);
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fprintf(f, "Maximum mount count: %d\n", sb->s_max_mnt_count);
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tm = sb->s_lastcheck;
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fprintf(f, "Last checked: %s", ctime(&tm));
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fprintf(f, "Check interval: %u (%s)\n", sb->s_checkinterval,
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interval_string(sb->s_checkinterval));
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if (sb->s_checkinterval)
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{
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time_t next;
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next = sb->s_lastcheck + sb->s_checkinterval;
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fprintf(f, "Next check after: %s", ctime(&next));
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}
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fprintf(f, "Reserved blocks uid: ");
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print_user(sb->s_def_resuid, f);
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fprintf(f, "Reserved blocks gid: ");
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print_group(sb->s_def_resgid, f);
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if (sb->s_rev_level >= EXT2_DYNAMIC_REV) {
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fprintf(f, "First inode: %d\n", sb->s_first_ino);
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fprintf(f, "Inode size: %d\n", sb->s_inode_size);
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}
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if (!e2p_is_null_uuid(sb->s_journal_uuid))
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fprintf(f, "Journal UUID: %s\n",
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e2p_uuid2str(sb->s_journal_uuid));
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if (sb->s_journal_inum)
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fprintf(f, "Journal inode: %u\n",
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sb->s_journal_inum);
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if (sb->s_journal_dev)
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fprintf(f, "Journal device: 0x%04x\n",
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sb->s_journal_dev);
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if (sb->s_last_orphan)
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fprintf(f, "First orphan inode: %u\n",
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sb->s_last_orphan);
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if ((sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) ||
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sb->s_def_hash_version)
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fprintf(f, "Default directory hash: %s\n",
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e2p_hash2string(sb->s_def_hash_version));
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if (!e2p_is_null_uuid(sb->s_hash_seed))
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fprintf(f, "Directory Hash Seed: %s\n",
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e2p_uuid2str(sb->s_hash_seed));
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}
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void list_super (struct ext2_super_block * s)
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{
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list_super2(s, stdout);
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}
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