release/src/router/busybox/e2fsprogs/e2p/ls.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * ls.c                 - List the contents of an ext2fs superblock
   4  *
   5  * Copyright (C) 1992, 1993, 1994  Remy Card <card@masi.ibp.fr>
   6  *                                 Laboratoire MASI, Institut Blaise Pascal
   7  *                                 Universite Pierre et Marie Curie (Paris VI)
   8  *
   9  * Copyright (C) 1995, 1996, 1997  Theodore Ts'o <tytso@mit.edu>
  10  *
  11  * This file can be redistributed under the terms of the GNU Library General
  12  * Public License
  13  */
  14
  15 #include <stdio.h>
  16 #include <stdlib.h>
  17 #include <sys/types.h>
  18 #include <string.h>
  19 #include <grp.h>
  20 #include <pwd.h>
  21 #include <time.h>
  22
  23 #include "e2p.h"
  24 #include "../e2fs_lib.h"
  25
  26 static void print_user(unsigned short uid, FILE *f)
  27 {
  28         struct passwd *pw = getpwuid(uid);
  29         fprintf(f, "%u (user %s)\n", uid,
  30                         (pw == NULL ? "unknown" : pw->pw_name));
  31 }
  32
  33 static void print_group(unsigned short gid, FILE *f)
  34 {
  35         struct group *gr = getgrgid(gid);
  36         fprintf(f, "%u (group %s)\n", gid,
  37                         (gr == NULL ? "unknown" : gr->gr_name));
  38 }
  39
  40 #define MONTH_INT (86400 * 30)
  41 #define WEEK_INT (86400 * 7)
  42 #define DAY_INT (86400)
  43 #define HOUR_INT (60 * 60)
  44 #define MINUTE_INT (60)
  45
  46 static const char *interval_string(unsigned int secs)
  47 {
  48         static char buf[256], tmp[80];
  49         int             hr, min, num;
  50
  51         buf[0] = 0;
  52
  53         if (secs == 0)
  54                 return "<none>";
  55
  56         if (secs >= MONTH_INT) {
  57                 num = secs / MONTH_INT;
  58                 secs -= num*MONTH_INT;
  59                 sprintf(buf, "%d month%s", num, (num>1) ? "s" : "");
  60         }
  61         if (secs >= WEEK_INT) {
  62                 num = secs / WEEK_INT;
  63                 secs -= num*WEEK_INT;
  64                 sprintf(tmp, "%s%d week%s", buf[0] ? ", " : "",
  65                         num, (num>1) ? "s" : "");
  66                 strcat(buf, tmp);
  67         }
  68         if (secs >= DAY_INT) {
  69                 num = secs / DAY_INT;
  70                 secs -= num*DAY_INT;
  71                 sprintf(tmp, "%s%d day%s", buf[0] ? ", " : "",
  72                         num, (num>1) ? "s" : "");
  73                 strcat(buf, tmp);
  74         }
  75         if (secs > 0) {
  76                 hr = secs / HOUR_INT;
  77                 secs -= hr*HOUR_INT;
  78                 min = secs / MINUTE_INT;
  79                 secs -= min*MINUTE_INT;
  80                 sprintf(tmp, "%s%d:%02d:%02d", buf[0] ? ", " : "",
  81                         hr, min, secs);
  82                 strcat(buf, tmp);
  83         }
  84         return buf;
  85 }
  86
  87 static void print_features(struct ext2_super_block * s, FILE *f)
  88 {
  89 #ifdef EXT2_DYNAMIC_REV
  90         int     i, j, printed=0;
  91         __u32   *mask = &s->s_feature_compat, m;
  92
  93         fprintf(f, "Filesystem features:     ");
  94         for (i=0; i <3; i++,mask++) {
  95                 for (j=0,m=1; j < 32; j++, m<<=1) {
  96                         if (*mask & m) {
  97                                 fprintf(f, " %s", e2p_feature2string(i, m));
  98                                 printed++;
  99                         }
 100                 }
 101         }
 102         if (printed == 0)
 103                 fprintf(f, " (none)");
 104         fprintf(f, "\n");
 105 #endif
 106 }
 107
 108 static void print_mntopts(struct ext2_super_block * s, FILE *f)
 109 {
 110 #ifdef EXT2_DYNAMIC_REV
 111         int     i, printed=0;
 112         __u32   mask = s->s_default_mount_opts, m;
 113
 114         fprintf(f, "Default mount options:   ");
 115         if (mask & EXT3_DEFM_JMODE) {
 116                 fprintf(f, " %s", e2p_mntopt2string(mask & EXT3_DEFM_JMODE));
 117                 printed++;
 118         }
 119         for (i=0,m=1; i < 32; i++, m<<=1) {
 120                 if (m & EXT3_DEFM_JMODE)
 121                         continue;
 122                 if (mask & m) {
 123                         fprintf(f, " %s", e2p_mntopt2string(m));
 124                         printed++;
 125                 }
 126         }
 127         if (printed == 0)
 128                 fprintf(f, " (none)");
 129         fprintf(f, "\n");
 130 #endif
 131 }
 132
 133
 134 #ifndef EXT2_INODE_SIZE
 135 #define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
 136 #endif
 137
 138 #ifndef EXT2_GOOD_OLD_REV
 139 #define EXT2_GOOD_OLD_REV 0
 140 #endif
 141
 142 void list_super2(struct ext2_super_block * sb, FILE *f)
 143 {
 144         int inode_blocks_per_group;
 145         char buf[80], uuid_buf[37], *str;
 146         time_t  tm;
 147
 148         inode_blocks_per_group = (((sb->s_inodes_per_group *
 149                                     EXT2_INODE_SIZE(sb)) +
 150                                    EXT2_BLOCK_SIZE(sb) - 1) /
 151                                   EXT2_BLOCK_SIZE(sb));
 152         if (sb->s_volume_name[0]) {
 153                 memset(buf, 0, sizeof(buf));
 154                 strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name));
 155         } else
 156                 strcpy(buf, "<none>");
 157         fprintf(f, "Filesystem volume name:   %s\n", buf);
 158         if (sb->s_last_mounted[0]) {
 159                 memset(buf, 0, sizeof(buf));
 160                 strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted));
 161         } else
 162                 strcpy(buf, "<not available>");
 163         fprintf(f,
 164                 "Last mounted on:          %s\n"
 165                 "Filesystem UUID:          %s\n"
 166                 "Filesystem magic number:  0x%04X\n"
 167                 "Filesystem revision #:    %d",
 168                 buf, unparse_uuid(sb->s_uuid, uuid_buf), sb->s_magic, sb->s_rev_level);
 169         if (sb->s_rev_level == EXT2_GOOD_OLD_REV) {
 170                 fprintf(f, " (original)\n");
 171 #ifdef EXT2_DYNAMIC_REV
 172         } else if (sb->s_rev_level == EXT2_DYNAMIC_REV) {
 173                 fprintf(f, " (dynamic)\n");
 174 #endif
 175         } else
 176                 fprintf(f, " (unknown)\n");
 177         print_features(sb, f);
 178         print_mntopts(sb, f);
 179         fprintf(f, "Filesystem state:        ");
 180         print_fs_state (f, sb->s_state);
 181         fprintf(f, "\nErrors behavior:          ");
 182         print_fs_errors(f, sb->s_errors);
 183         str = e2p_os2string(sb->s_creator_os);
 184         fprintf(f,
 185                 "\n"
 186                 "Filesystem OS type:       %s\n"
 187                 "Inode count:              %u\n"
 188                 "Block count:              %u\n"
 189                 "Reserved block count:     %u\n"
 190                 "Free blocks:              %u\n"
 191                 "Free inodes:              %u\n"
 192                 "First block:              %u\n"
 193                 "Block size:               %u\n"
 194                 "Fragment size:            %u\n",
 195                 str, sb->s_inodes_count, sb->s_blocks_count, sb->s_r_blocks_count,
 196                 sb->s_free_blocks_count, sb->s_free_inodes_count,
 197                 sb->s_first_data_block, EXT2_BLOCK_SIZE(sb), EXT2_FRAG_SIZE(sb));
 198         free(str);
 199         if (sb->s_reserved_gdt_blocks)
 200                 fprintf(f, "Reserved GDT blocks:      %u\n",
 201                         sb->s_reserved_gdt_blocks);
 202         fprintf(f,
 203                 "Blocks per group:         %u\n"
 204                 "Fragments per group:      %u\n"
 205                 "Inodes per group:         %u\n"
 206                 "Inode blocks per group:   %u\n",
 207                 sb->s_blocks_per_group, sb->s_frags_per_group,
 208                 sb->s_inodes_per_group, inode_blocks_per_group);
 209         if (sb->s_first_meta_bg)
 210                 fprintf(f, "First meta block group:   %u\n",
 211                         sb->s_first_meta_bg);
 212         if (sb->s_mkfs_time) {
 213                 tm = sb->s_mkfs_time;
 214                 fprintf(f, "Filesystem created:       %s", ctime(&tm));
 215         }
 216         tm = sb->s_mtime;
 217         fprintf(f, "Last mount time:          %s",
 218                 sb->s_mtime ? ctime(&tm) : "n/a\n");
 219         tm = sb->s_wtime;
 220         fprintf(f,
 221                 "Last write time:          %s"
 222                 "Mount count:              %u\n"
 223                 "Maximum mount count:      %d\n",
 224                 ctime(&tm), sb->s_mnt_count, sb->s_max_mnt_count);
 225         tm = sb->s_lastcheck;
 226         fprintf(f,
 227                 "Last checked:             %s"
 228                 "Check interval:           %u (%s)\n",
 229                 ctime(&tm),
 230                 sb->s_checkinterval, interval_string(sb->s_checkinterval));
 231         if (sb->s_checkinterval)
 232         {
 233                 time_t next;
 234
 235                 next = sb->s_lastcheck + sb->s_checkinterval;
 236                 fprintf(f, "Next check after:         %s", ctime(&next));
 237         }
 238         fprintf(f, "Reserved blocks uid:      ");
 239         print_user(sb->s_def_resuid, f);
 240         fprintf(f, "Reserved blocks gid:      ");
 241         print_group(sb->s_def_resgid, f);
 242         if (sb->s_rev_level >= EXT2_DYNAMIC_REV) {
 243                 fprintf(f,
 244                         "First inode:              %d\n"
 245                         "Inode size:              %d\n",
 246                         sb->s_first_ino, sb->s_inode_size);
 247         }
 248         if (!uuid_is_null(sb->s_journal_uuid))
 249                 fprintf(f, "Journal UUID:             %s\n",
 250                         unparse_uuid(sb->s_journal_uuid, uuid_buf));
 251         if (sb->s_journal_inum)
 252                 fprintf(f, "Journal inode:            %u\n",
 253                         sb->s_journal_inum);
 254         if (sb->s_journal_dev)
 255                 fprintf(f, "Journal device:               0x%04x\n",
 256                         sb->s_journal_dev);
 257         if (sb->s_last_orphan)
 258                 fprintf(f, "First orphan inode:       %u\n",
 259                         sb->s_last_orphan);
 260         if ((sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) ||
 261             sb->s_def_hash_version)
 262                 fprintf(f, "Default directory hash:   %s\n",
 263                         e2p_hash2string(sb->s_def_hash_version));
 264         if (!uuid_is_null(sb->s_hash_seed))
 265                 fprintf(f, "Directory Hash Seed:      %s\n",
 266                         unparse_uuid((unsigned char *)sb->s_hash_seed, uuid_buf));
 267         if (sb->s_jnl_backup_type) {
 268                 fprintf(f, "Journal backup:           ");
 269                 if (sb->s_jnl_backup_type == 1)
 270                         fprintf(f, "inode blocks\n");
 271                 else
 272                         fprintf(f, "type %u\n", sb->s_jnl_backup_type);
 273         }
 274 }