lib/e2p/ls.c

   1 /*
   2  * ls.c                 - List the contents of an ext2fs superblock
   3  *
   4  * Copyright (C) 1992, 1993, 1994  Remy Card <card@masi.ibp.fr>
   5  *                                 Laboratoire MASI, Institut Blaise Pascal
   6  *                                 Universite Pierre et Marie Curie (Paris VI)
   7  *
   8  * Copyright (C) 1995, 1996, 1997  Theodore Ts'o <tytso@mit.edu>
   9  *
  10  * This file can be redistributed under the terms of the GNU Library General
  11  * Public License
  12  */
  13
  14 #include <stdio.h>
  15 #include <sys/types.h>
  16 #include <string.h>
  17 #include <grp.h>
  18 #include <pwd.h>
  19 #include <time.h>
  20
  21 #include "e2p.h"
  22
  23 static void print_user (unsigned short uid, FILE *f)
  24 {
  25         struct passwd *pw;
  26
  27         fprintf(f, "%u ", uid);
  28         pw = getpwuid (uid);
  29         if (pw == NULL)
  30                 fprintf(f, "(user unknown)\n");
  31         else
  32                 fprintf(f, "(user %s)\n", pw->pw_name);
  33 }
  34
  35 static void print_group (unsigned short gid, FILE *f)
  36 {
  37         struct group *gr;
  38
  39         fprintf(f, "%u ", gid);
  40         gr = getgrgid (gid);
  41         if (gr == NULL)
  42                 fprintf(f, "(group unknown)\n");
  43         else
  44                 fprintf(f, "(group %s)\n", gr->gr_name);
  45 }
  46
  47 #define MONTH_INT (86400 * 30)
  48 #define WEEK_INT (86400 * 7)
  49 #define DAY_INT (86400)
  50 #define HOUR_INT (60 * 60)
  51 #define MINUTE_INT (60)
  52
  53 static const char *interval_string(unsigned int secs)
  54 {
  55         static char buf[256], tmp[80];
  56         int             hr, min, num;
  57
  58         buf[0] = 0;
  59
  60         if (secs == 0)
  61                 return "<none>";
  62
  63         if (secs >= MONTH_INT) {
  64                 num = secs / MONTH_INT;
  65                 secs -= num*MONTH_INT;
  66                 sprintf(buf, "%d month%s", num, (num>1) ? "s" : "");
  67         }
  68         if (secs >= WEEK_INT) {
  69                 num = secs / WEEK_INT;
  70                 secs -= num*WEEK_INT;
  71                 sprintf(tmp, "%s%d week%s", buf[0] ? ", " : "",
  72                         num, (num>1) ? "s" : "");
  73                 strcat(buf, tmp);
  74         }
  75         if (secs >= DAY_INT) {
  76                 num = secs / DAY_INT;
  77                 secs -= num*DAY_INT;
  78                 sprintf(tmp, "%s%d day%s", buf[0] ? ", " : "",
  79                         num, (num>1) ? "s" : "");
  80                 strcat(buf, tmp);
  81         }
  82         if (secs > 0) {
  83                 hr = secs / HOUR_INT;
  84                 secs -= hr*HOUR_INT;
  85                 min = secs / MINUTE_INT;
  86                 secs -= min*MINUTE_INT;
  87                 sprintf(tmp, "%s%d:%02d:%02d", buf[0] ? ", " : "",
  88                         hr, min, secs);
  89                 strcat(buf, tmp);
  90         }
  91         return buf;
  92 }
  93
  94 static void print_features(struct ext2_super_block * s, FILE *f)
  95 {
  96 #ifdef EXT2_DYNAMIC_REV
  97         int     i, j, printed=0;
  98         __u32   *mask = &s->s_feature_compat, m;
  99
 100         fprintf(f, "Filesystem features:     ");
 101         for (i=0; i <3; i++,mask++) {
 102                 for (j=0,m=1; j < 32; j++, m<<=1) {
 103                         if (*mask & m) {
 104                                 fprintf(f, " %s", e2p_feature2string(i, m));
 105                                 printed++;
 106                         }
 107                 }
 108         }
 109         if (printed == 0)
 110                 fprintf(f, " (none)");
 111         fprintf(f, "\n");
 112 #endif
 113 }
 114
 115
 116
 117 #ifndef EXT2_INODE_SIZE
 118 #define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
 119 #endif
 120
 121 #ifndef EXT2_GOOD_OLD_REV
 122 #define EXT2_GOOD_OLD_REV 0
 123 #endif
 124
 125 void list_super2(struct ext2_super_block * sb, FILE *f)
 126 {
 127         int inode_blocks_per_group;
 128         char buf[80];
 129         const char *os;
 130         time_t  tm;
 131
 132         inode_blocks_per_group = (((sb->s_inodes_per_group *
 133                                     EXT2_INODE_SIZE(sb)) +
 134                                    EXT2_BLOCK_SIZE(sb) - 1) /
 135                                   EXT2_BLOCK_SIZE(sb));
 136         if (sb->s_volume_name[0]) {
 137                 memset(buf, 0, sizeof(buf));
 138                 strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name));
 139         } else
 140                 strcpy(buf, "<none>");
 141         fprintf(f, "Filesystem volume name:   %s\n", buf);
 142         if (sb->s_last_mounted[0]) {
 143                 memset(buf, 0, sizeof(buf));
 144                 strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted));
 145         } else
 146                 strcpy(buf, "<not available>");
 147         fprintf(f, "Last mounted on:          %s\n", buf);
 148         fprintf(f, "Filesystem UUID:          %s\n", e2p_uuid2str(sb->s_uuid));
 149         fprintf(f, "Filesystem magic number:  0x%04X\n", sb->s_magic);
 150         fprintf(f, "Filesystem revision #:    %d", sb->s_rev_level);
 151         if (sb->s_rev_level == EXT2_GOOD_OLD_REV) {
 152                 fprintf(f, " (original)\n");
 153 #ifdef EXT2_DYNAMIC_REV
 154         } else if (sb->s_rev_level == EXT2_DYNAMIC_REV) {
 155                 fprintf(f, " (dynamic)\n");
 156 #endif
 157         } else
 158                 fprintf(f, " (unknown)\n");
 159         print_features(sb, f);
 160         fprintf(f, "Filesystem state:        ");
 161         print_fs_state (f, sb->s_state);
 162         fprintf(f, "\n");
 163         fprintf(f, "Errors behavior:          ");
 164         print_fs_errors(f, sb->s_errors);
 165         fprintf(f, "\n");
 166         switch (sb->s_creator_os) {
 167             case EXT2_OS_LINUX: os = "Linux"; break;
 168             case EXT2_OS_HURD:  os = "GNU/Hurd"; break;
 169             case EXT2_OS_MASIX: os = "Masix"; break;
 170             default:            os = "unknown"; break;
 171         }
 172         fprintf(f, "Filesystem OS type:       %s\n", os);
 173         fprintf(f, "Inode count:              %u\n", sb->s_inodes_count);
 174         fprintf(f, "Block count:              %u\n", sb->s_blocks_count);
 175         fprintf(f, "Reserved block count:     %u\n", sb->s_r_blocks_count);
 176         fprintf(f, "Free blocks:              %u\n", sb->s_free_blocks_count);
 177         fprintf(f, "Free inodes:              %u\n", sb->s_free_inodes_count);
 178         fprintf(f, "First block:              %u\n", sb->s_first_data_block);
 179         fprintf(f, "Block size:               %u\n", EXT2_BLOCK_SIZE(sb));
 180         fprintf(f, "Fragment size:            %u\n", EXT2_FRAG_SIZE(sb));
 181         fprintf(f, "Blocks per group:         %u\n", sb->s_blocks_per_group);
 182         fprintf(f, "Fragments per group:      %u\n", sb->s_frags_per_group);
 183         fprintf(f, "Inodes per group:         %u\n", sb->s_inodes_per_group);
 184         fprintf(f, "Inode blocks per group:   %u\n", inode_blocks_per_group);
 185         tm = sb->s_mtime;
 186         fprintf(f, "Last mount time:          %s", ctime(&tm));
 187         tm = sb->s_wtime;
 188         fprintf(f, "Last write time:          %s", ctime(&tm));
 189         fprintf(f, "Mount count:              %u\n", sb->s_mnt_count);
 190         fprintf(f, "Maximum mount count:      %d\n", sb->s_max_mnt_count);
 191         tm = sb->s_lastcheck;
 192         fprintf(f, "Last checked:             %s", ctime(&tm));
 193         fprintf(f, "Check interval:           %u (%s)\n", sb->s_checkinterval,
 194                interval_string(sb->s_checkinterval));
 195         if (sb->s_checkinterval)
 196         {
 197                 time_t next;
 198
 199                 next = sb->s_lastcheck + sb->s_checkinterval;
 200                 fprintf(f, "Next check after:         %s", ctime(&next));
 201         }
 202         fprintf(f, "Reserved blocks uid:      ");
 203         print_user(sb->s_def_resuid, f);
 204         fprintf(f, "Reserved blocks gid:      ");
 205         print_group(sb->s_def_resgid, f);
 206         if (sb->s_rev_level >= EXT2_DYNAMIC_REV) {
 207                 fprintf(f, "First inode:              %d\n", sb->s_first_ino);
 208                 fprintf(f, "Inode size:           %d\n", sb->s_inode_size);
 209         }
 210         if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
 211                 fprintf(f, "Journal UUID:             %s\n",
 212                         e2p_uuid2str(sb->s_journal_uuid));
 213                 fprintf(f, "Journal inode:            %u\n", sb->s_journal_inum);
 214                 fprintf(f, "Journal device:               0x%04x\n", sb->s_journal_dev);
 215                 fprintf(f, "First orphan inode:       %u\n", sb->s_last_orphan);
 216         }
 217         if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) {
 218                 fprintf(f, "Default directory hash:   %s\n",
 219                         e2p_hash2string(sb->s_def_hash_version));
 220                 fprintf(f, "Directory Hash Seed:      %s\n",
 221                         e2p_uuid2str(sb->s_hash_seed));
 222         }
 223 }
 224
 225 void list_super (struct ext2_super_block * s)
 226 {
 227         list_super2(s, stdout);
 228 }
 229