| /* vi: set sw=4 ts=4: */ |
| /* |
| * 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> |
| * |
| * This file can be redistributed under the terms of the GNU Library General |
| * Public License |
| */ |
| |
| #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 = getpwuid(uid); |
| fprintf(f, "%u (user %s)\n", uid, |
| (pw == NULL ? "unknown" : pw->pw_name)); |
| } |
| |
| static void print_group(unsigned short gid, FILE *f) |
| { |
| struct group *gr = getgrgid(gid); |
| fprintf(f, "%u (group %s)\n", gid, |
| (gr == NULL ? "unknown" : 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 |
| } |
| |
| |
| #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" |
| "Filesystem UUID: %s\n" |
| "Filesystem magic number: 0x%04X\n" |
| "Filesystem revision #: %d", |
| buf, e2p_uuid2str(sb->s_uuid), sb->s_magic, 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_mntopts(sb, f); |
| fprintf(f, "Filesystem state: "); |
| print_fs_state (f, sb->s_state); |
| fprintf(f, "\nErrors behavior: "); |
| print_fs_errors(f, sb->s_errors); |
| str = e2p_os2string(sb->s_creator_os); |
| fprintf(f, |
| "\n" |
| "Filesystem OS type: %s\n" |
| "Inode count: %u\n" |
| "Block count: %u\n" |
| "Reserved block count: %u\n" |
| "Free blocks: %u\n" |
| "Free inodes: %u\n" |
| "First block: %u\n" |
| "Block size: %u\n" |
| "Fragment size: %u\n", |
| str, sb->s_inodes_count, sb->s_blocks_count, sb->s_r_blocks_count, |
| sb->s_free_blocks_count, sb->s_free_inodes_count, |
| sb->s_first_data_block, EXT2_BLOCK_SIZE(sb), EXT2_FRAG_SIZE(sb)); |
| free(str); |
| 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" |
| "Fragments per group: %u\n" |
| "Inodes per group: %u\n" |
| "Inode blocks per group: %u\n", |
| sb->s_blocks_per_group, sb->s_frags_per_group, |
| sb->s_inodes_per_group, inode_blocks_per_group); |
| if (sb->s_first_meta_bg) |
| fprintf(f, "First meta block group: %u\n", |
| sb->s_first_meta_bg); |
| 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" |
| "Mount count: %u\n" |
| "Maximum mount count: %d\n", |
| ctime(&tm), sb->s_mnt_count, sb->s_max_mnt_count); |
| tm = sb->s_lastcheck; |
| fprintf(f, |
| "Last checked: %s" |
| "Check interval: %u (%s)\n", |
| ctime(&tm), |
| 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)); |
| } |
| 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" |
| "Inode size: %d\n", |
| sb->s_first_ino, sb->s_inode_size); |
| } |
| 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: "); |
| if (sb->s_jnl_backup_type == 1) |
| fprintf(f, "inode blocks\n"); |
| else |
| fprintf(f, "type %u\n", sb->s_jnl_backup_type); |
| } |
| } |
