/* 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); } }