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C/C++ Source or Header  |  1995-08-24  |  4KB  |  160 lines
  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.         case EXT2_OS_MASIX:
  105.             wprintw (show_pad,"Masix");
  106.             break;
  107.  
  108.         default:
  109.             wprintw (show_pad,"Unknown");
  110.             break;
  111.     }
  112.     
  113.     refresh_show_pad ();
  114.  
  115.     wmove (show_win,1,0);wprintw (show_win,"\n");wmove (show_win,2,0);
  116.     wprintw (show_win,"Superblock copy %ld ",super_info.copy_num);
  117.     if (super_info.copy_num==0)
  118.         wprintw (show_win,"(main copy)");
  119.     wprintw (show_win,"\n");
  120.     refresh_show_win ();
  121. }
  122.  
  123. void type_ext2_super_block___gocopy (char *command_line)
  124.  
  125. {
  126.     unsigned long copy_num,offset;
  127.     char *ptr,buffer [80];
  128.     
  129.     ptr=parse_word (command_line,buffer);
  130.     if (*ptr==0) {
  131.         wprintw (command_win,"Error - No argument specified\n");refresh_command_win ();return;
  132.     }
  133.     ptr=parse_word (ptr,buffer);
  134.  
  135.     copy_num=atol (buffer);
  136.     
  137.     offset=file_system_info.super_block_offset+copy_num*file_system_info.no_blocks_in_group*file_system_info.block_size;
  138.     
  139.     if (offset > file_system_info.file_system_size) {
  140.         wprintw (command_win,"Error - Copy number out of bounds\n");refresh_command_win ();return;
  141.     }    
  142.  
  143.     super_info.copy_num=copy_num;
  144.     device_offset=offset;
  145.  
  146.     sprintf (buffer,"setoffset %ld",device_offset);dispatch (buffer);
  147.     strcpy (buffer,"show");dispatch (buffer);
  148. }
  149.  
  150. void type_ext2_super_block___setactivecopy (char *command_line)
  151.  
  152. {
  153.     struct ext2_super_block sb;
  154.     
  155.     sb=type_data.u.t_ext2_super_block;
  156.     dispatch ("gocopy 0");
  157.     type_data.u.t_ext2_super_block=sb;
  158.     dispatch ("show");
  159. }
  160.