ext2ed/super_com.c

   1 /*
   2
   3 /usr/src/ext2ed/super_com.c
   4
   5 A part of the extended file system 2 disk editor.
   6
   7 ----------------------
   8 Handles the superblock
   9 ----------------------
  10
  11 First written on: April 9 1995
  12
  13 Copyright (C) 1995 Gadi Oxman
  14
  15 */
  16
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19 #include <string.h>
  20 #include <time.h>
  21
  22 #include "ext2ed.h"
  23
  24 void type_ext2_super_block___show (char *command_line)
  25
  26 {
  27         struct ext2_super_block *super;
  28         super=&type_data.u.t_ext2_super_block;
  29
  30         show (command_line);
  31
  32         if (super->s_blocks_count != 0) {
  33                 wmove (show_pad,2,40);wprintw (show_pad,"%2.2f%%",100*(float) super->s_r_blocks_count/ (float) super->s_blocks_count);
  34                 wmove (show_pad,3,40);wprintw (show_pad,"%2.2f%%",100*(float) super->s_free_blocks_count/ (float) super->s_blocks_count);
  35         }
  36
  37         if (super->s_inodes_count != 0) {
  38                 wmove (show_pad,4,40);wprintw (show_pad,"%2.2f%%",100*(float) super->s_free_inodes_count/ (float) super->s_inodes_count);
  39         }
  40
  41         wmove (show_pad,6,40);
  42         switch (super->s_log_block_size) {
  43                 case 0: wprintw (show_pad,"1024 bytes");break;
  44                 case 1: wprintw (show_pad,"2048 bytes");break;
  45                 case 2: wprintw (show_pad,"4096 bytes");break;
  46         }
  47         wmove (show_pad,11,40);wprintw (show_pad,"%s",ctime ((time_t *) &type_data.u.t_ext2_super_block.s_mtime));
  48         wmove (show_pad,12,40);wprintw (show_pad,"%s",ctime ((time_t *) &type_data.u.t_ext2_super_block.s_wtime));
  49         wmove (show_pad,19,40);wprintw (show_pad,"%s",ctime ((time_t *) &type_data.u.t_ext2_super_block.s_lastcheck));
  50         wmove (show_pad,15,40);
  51
  52         switch (type_data.u.t_ext2_super_block.s_magic) {
  53                 case EXT2_SUPER_MAGIC:
  54                         wprintw (show_pad,"ext2 >= 0.2B");
  55                         break;
  56                 case EXT2_PRE_02B_MAGIC:
  57                         wprintw (show_pad,"ext2 < 0.2B (not supported)");
  58                         break;
  59                 default:
  60                         wprintw (show_pad,"Unknown");
  61                         break;
  62         }
  63
  64         wmove (show_pad,16,40);
  65         if (type_data.u.t_ext2_super_block.s_state & 0x1)
  66                 wprintw (show_pad,"clean ");
  67         else
  68                 wprintw (show_pad,"not clean ");
  69
  70         if (type_data.u.t_ext2_super_block.s_state & 0x2)
  71                 wprintw (show_pad,"with errors ");
  72         else
  73                 wprintw (show_pad,"with no errors");
  74
  75         wmove (show_pad,17,40);
  76
  77         switch (type_data.u.t_ext2_super_block.s_errors) {
  78                 case EXT2_ERRORS_CONTINUE:
  79                         wprintw (show_pad,"Continue");
  80                         break;
  81                 case EXT2_ERRORS_RO:
  82                         wprintw (show_pad,"Remount read only");
  83                         break;
  84                 case EXT2_ERRORS_PANIC:
  85                         wprintw (show_pad,"Issue kernel panic");
  86                         break;
  87                 default:
  88                         wprintw (show_pad,"Unknown");
  89                         break;
  90         }
  91
  92         wmove (show_pad,21,40);
  93
  94         switch (type_data.u.t_ext2_super_block.s_creator_os) {
  95
  96                 case EXT2_OS_LINUX:
  97                         wprintw (show_pad,"Linux :-)");
  98                         break;
  99
 100                 case EXT2_OS_HURD:
 101                         wprintw (show_pad,"Hurd");
 102                         break;
 103
 104                 default:
 105                         wprintw (show_pad,"Unknown");
 106                         break;
 107         }
 108
 109         refresh_show_pad ();
 110
 111         wmove (show_win,1,0);wprintw (show_win,"\n");wmove (show_win,2,0);
 112         wprintw (show_win,"Superblock copy %ld ",super_info.copy_num);
 113         if (super_info.copy_num==0)
 114                 wprintw (show_win,"(main copy)");
 115         wprintw (show_win,"\n");
 116         refresh_show_win ();
 117 }
 118
 119 void type_ext2_super_block___gocopy (char *command_line)
 120
 121 {
 122         unsigned long copy_num,offset;
 123         char *ptr,buffer [80];
 124
 125         ptr=parse_word (command_line,buffer);
 126         if (*ptr==0) {
 127                 wprintw (command_win,"Error - No argument specified\n");refresh_command_win ();return;
 128         }
 129         ptr=parse_word (ptr,buffer);
 130
 131         copy_num=atol (buffer);
 132
 133         offset=file_system_info.super_block_offset+copy_num*file_system_info.no_blocks_in_group*file_system_info.block_size;
 134
 135         if (offset > file_system_info.file_system_size) {
 136                 wprintw (command_win,"Error - Copy number out of bounds\n");refresh_command_win ();return;
 137         }
 138
 139         super_info.copy_num=copy_num;
 140         device_offset=offset;
 141
 142         sprintf (buffer,"setoffset %ld",device_offset);dispatch (buffer);
 143         strcpy (buffer,"show");dispatch (buffer);
 144 }
 145
 146 void type_ext2_super_block___setactivecopy (char *command_line)
 147
 148 {
 149         struct ext2_super_block sb;
 150
 151         sb=type_data.u.t_ext2_super_block;
 152         dispatch ("gocopy 0");
 153         type_data.u.t_ext2_super_block=sb;
 154         dispatch ("show");
 155 }