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  * This file can be redistributed under the terms of the GNU Library General
   9  * Public License
  10  */
  11
  12 #include <sys/types.h>
  13 #include <grp.h>
  14 #include <pwd.h>
  15 #include <stdio.h>
  16 #include <time.h>
  17
  18 #include <linux/ext2_fs.h>
  19
  20 #include "e2p.h"
  21
  22 static void print_user (unsigned short uid)
  23 {
  24         struct passwd *pw;
  25
  26         printf ("%u ", uid);
  27         pw = getpwuid (uid);
  28         if (pw == NULL)
  29                 printf ("(user unknown)\n");
  30         else
  31                 printf ("(user %s)\n", pw->pw_name);
  32 }
  33
  34 static void print_group (unsigned short gid)
  35 {
  36         struct group *gr;
  37
  38         printf ("%u ", gid);
  39         gr = getgrgid (gid);
  40         if (gr == NULL)
  41                 printf ("(group unknown)\n");
  42         else
  43                 printf ("(group %s)\n", gr->gr_name);
  44 }
  45
  46 #ifndef EXT2_INODE_SIZE
  47 #define EXT2_INODE_SIZE(s) sizeof(struct ext2_inode)
  48 #endif
  49
  50 void list_super (struct ext2_super_block * s)
  51 {
  52         int inode_blocks_per_group;
  53
  54         inode_blocks_per_group = (((s->s_inodes_per_group *
  55                                     EXT2_INODE_SIZE(s)) +
  56                                    EXT2_BLOCK_SIZE(s) - 1) /
  57                                   EXT2_BLOCK_SIZE(s));
  58
  59         printf ("Filesystem magic number:  0x%04X\n", s->s_magic);
  60         printf ("Filesystem revision #:    %d\n", s->s_rev_level);
  61         printf ("Filesystem state:        ");
  62         print_fs_state (stdout, s->s_state);
  63         printf ("\n");
  64         printf ("Errors behavior:          ");
  65         print_fs_errors (stdout, s->s_errors);
  66         printf ("\n");
  67         printf ("Inode count:              %u\n", s->s_inodes_count);
  68         printf ("Block count:              %u\n", s->s_blocks_count);
  69         printf ("Reserved block count:     %u\n", s->s_r_blocks_count);
  70         printf ("Free blocks:              %u\n", s->s_free_blocks_count);
  71         printf ("Free inodes:              %u\n", s->s_free_inodes_count);
  72         printf ("First block:              %u\n", s->s_first_data_block);
  73         printf ("Block size:               %u\n", EXT2_BLOCK_SIZE(s));
  74         printf ("Fragment size:            %u\n", EXT2_FRAG_SIZE(s));
  75         printf ("Blocks per group:         %u\n", s->s_blocks_per_group);
  76         printf ("Fragments per group:      %u\n", s->s_frags_per_group);
  77         printf ("Inodes per group:         %u\n", s->s_inodes_per_group);
  78         printf ("Inode blocks per group:   %u\n", inode_blocks_per_group);
  79         printf ("Last mount time:          %s", ctime ((time_t *) &s->s_mtime));
  80         printf ("Last write time:          %s", ctime ((time_t *) &s->s_wtime));
  81         printf ("Mount count:              %u\n", s->s_mnt_count);
  82         printf ("Maximum mount count:      %d\n", s->s_max_mnt_count);
  83         printf ("Last checked:             %s", ctime ((time_t *) &s->s_lastcheck));
  84         printf ("Check interval:           %u\n", s->s_checkinterval);
  85         if (s->s_checkinterval)
  86         {
  87                 time_t next;
  88
  89                 next = s->s_lastcheck + s->s_checkinterval;
  90                 printf ("Next check after:         %s", ctime (&next));
  91         }
  92 #ifdef  EXT2_DEF_RESUID
  93         printf ("Reserved blocks uid:      ");
  94         print_user (s->s_def_resuid);
  95         printf ("Reserved blocks gid:      ");
  96         print_group (s->s_def_resgid);
  97 #endif
  98 #ifdef EXT2_DYNAMIC_REV
  99         if (s->s_rev_level >= EXT2_DYNAMIC_REV) {
 100                 printf("First inode:              %d\n", s->s_first_ino);
 101                 printf("Inode size:               %d\n", s->s_inode_size);
 102         }
 103 #endif
 104 }