ext2ed/group_com.c

   1 /*
   2
   3 /usr/src/ext2ed/group_com.c
   4
   5 A part of the extended file system 2 disk editor.
   6
   7 General user commands
   8
   9 First written on: April 17 1995
  10
  11 Copyright (C) 1995 Gadi Oxman
  12
  13 */
  14
  15 #include "config.h"
  16 #include <stdio.h>
  17 #include <stdlib.h>
  18 #include <string.h>
  19
  20 #include "ext2ed.h"
  21
  22 void type_ext2_group_desc___next (char *command_line)
  23
  24 {
  25         long entry_offset=1;
  26         char *ptr,buffer [80];
  27
  28         ptr=parse_word (command_line,buffer);
  29         if (*ptr!=0) {
  30                 ptr=parse_word (ptr,buffer);
  31                 entry_offset=atol (buffer);
  32         }
  33
  34         sprintf (buffer,"entry %ld",group_info.group_num+entry_offset);
  35         dispatch (buffer);
  36 }
  37
  38 void type_ext2_group_desc___prev (char *command_line)
  39
  40 {
  41         long entry_offset=1;
  42         char *ptr,buffer [80];
  43
  44         ptr=parse_word (command_line,buffer);
  45         if (*ptr!=0) {
  46                 ptr=parse_word (ptr,buffer);
  47                 entry_offset=atol (buffer);
  48         }
  49
  50         sprintf (buffer,"entry %ld",group_info.group_num-entry_offset);
  51         dispatch (buffer);
  52 }
  53
  54 void type_ext2_group_desc___entry (char *command_line)
  55
  56 {
  57         long group_num;
  58         char *ptr,buffer [80];
  59
  60         ptr=parse_word (command_line,buffer);
  61         if (*ptr==0) {
  62                 wprintw (command_win,"Error - No argument specified\n");refresh_command_win ();return;
  63         }
  64         ptr=parse_word (ptr,buffer);
  65
  66         group_num=atol (buffer);
  67
  68         if (group_num < 0 || group_num >= file_system_info.groups_count) {
  69                 wprintw (command_win,"Error - Entry number out of bounds\n");refresh_command_win ();return;
  70         }
  71
  72         device_offset=file_system_info.first_group_desc_offset+group_num*sizeof (struct ext2_group_desc);
  73
  74         sprintf (buffer,"setoffset %ld",device_offset);dispatch (buffer);
  75         strcpy (buffer,"show");dispatch (buffer);
  76         group_info.group_num=group_num;
  77 }
  78
  79
  80 void type_ext2_group_desc___gocopy (char *command_line)
  81
  82 {
  83         unsigned long copy_num,offset;
  84         char *ptr,buffer [80];
  85
  86         ptr=parse_word (command_line,buffer);
  87         if (*ptr==0) {
  88                 wprintw (command_win,"Error - No argument specified\n");refresh_command_win ();return;
  89         }
  90         ptr=parse_word (ptr,buffer);
  91
  92         copy_num=atol (buffer);
  93
  94         offset=file_system_info.first_group_desc_offset+copy_num*file_system_info.super_block.s_blocks_per_group*file_system_info.block_size;
  95
  96         if (offset > file_system_info.file_system_size) {
  97                 wprintw (command_win,"Error - Copy number out of bounds\n");refresh_command_win ();return;
  98         }
  99
 100         group_info.copy_num=copy_num;
 101         device_offset=offset+group_info.group_num*sizeof (struct ext2_group_desc);
 102
 103         sprintf (buffer,"setoffset %ld",device_offset);dispatch (buffer);
 104         strcpy (buffer,"show");dispatch (buffer);
 105 }
 106
 107
 108 void type_ext2_group_desc___show (char *command_line)
 109
 110 {
 111         long group_num,temp;
 112
 113         temp=(device_offset-file_system_info.first_group_desc_offset) % (file_system_info.super_block.s_blocks_per_group*file_system_info.block_size);
 114         group_num=temp/sizeof (struct ext2_group_desc);
 115
 116         show (command_line);
 117
 118         wmove (show_win,1,0);wprintw (show_win,"\n");wmove (show_win,2,0);
 119         wprintw (show_win,"Group %ld of %ld ",group_num,file_system_info.groups_count-1);
 120         wprintw (show_win,"in copy %ld ",group_info.copy_num);
 121         if (group_info.copy_num==0) wprintw (show_win,"(Main copy)");
 122         wprintw (show_win,"\n");refresh_show_win ();
 123
 124         if (group_num==0) {
 125                 wprintw (command_win,"Reached first group descriptor\n");
 126                 wrefresh (command_win);
 127         }
 128
 129         if (group_num==file_system_info.groups_count-1) {
 130                 wprintw (command_win,"Reached last group descriptor\n");
 131                 wrefresh (command_win);
 132         }
 133 }
 134
 135 void type_ext2_group_desc___inode (char *command_line)
 136
 137 {
 138         long inode_offset;
 139         char buffer [80];
 140
 141         inode_offset=type_data.u.t_ext2_group_desc.bg_inode_table;
 142         sprintf (buffer,"setoffset block %ld",inode_offset);dispatch (buffer);
 143         sprintf (buffer,"settype ext2_inode");dispatch (buffer);
 144 }
 145
 146 void type_ext2_group_desc___blockbitmap (char *command_line)
 147
 148 {
 149         long block_bitmap_offset;
 150         char buffer [80];
 151
 152         block_bitmap_info.entry_num=0;
 153         block_bitmap_info.group_num=group_info.group_num;
 154
 155         block_bitmap_offset=type_data.u.t_ext2_group_desc.bg_block_bitmap;
 156         sprintf (buffer,"setoffset block %ld",block_bitmap_offset);dispatch (buffer);
 157         sprintf (buffer,"settype block_bitmap");dispatch (buffer);
 158 }
 159
 160 void type_ext2_group_desc___inodebitmap (char *command_line)
 161
 162 {
 163         long inode_bitmap_offset;
 164         char buffer [80];
 165
 166         inode_bitmap_info.entry_num=0;
 167         inode_bitmap_info.group_num=group_info.group_num;
 168
 169         inode_bitmap_offset=type_data.u.t_ext2_group_desc.bg_inode_bitmap;
 170         sprintf (buffer,"setoffset block %ld",inode_bitmap_offset);dispatch (buffer);
 171         sprintf (buffer,"settype inode_bitmap");dispatch (buffer);
 172 }
 173
 174 void type_ext2_group_desc___setactivecopy (char *command_line)
 175
 176 {
 177         struct ext2_group_desc gd;
 178
 179         gd=type_data.u.t_ext2_group_desc;
 180         dispatch ("gocopy 0");
 181         type_data.u.t_ext2_group_desc=gd;
 182         dispatch ("show");
 183 }