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/*
/usr/src/ext2ed/group_com.c
A part of the extended file system 2 disk editor.
General user commands
First written on: April 17 1995
Copyright (C) 1995 Gadi Oxman
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ext2ed.h"
void type_ext2_group_desc___next (char *command_line)
{
long entry_offset=1;
char *ptr,buffer [80];
ptr=parse_word (command_line,buffer);
if (*ptr!=0) {
ptr=parse_word (ptr,buffer);
entry_offset=atol (buffer);
}
sprintf (buffer,"entry %ld",group_info.group_num+entry_offset);
dispatch (buffer);
}
void type_ext2_group_desc___prev (char *command_line)
{
long entry_offset=1;
char *ptr,buffer [80];
ptr=parse_word (command_line,buffer);
if (*ptr!=0) {
ptr=parse_word (ptr,buffer);
entry_offset=atol (buffer);
}
sprintf (buffer,"entry %ld",group_info.group_num-entry_offset);
dispatch (buffer);
}
void type_ext2_group_desc___entry (char *command_line)
{
long group_num;
char *ptr,buffer [80];
ptr=parse_word (command_line,buffer);
if (*ptr==0) {
wprintw (command_win,"Error - No argument specified\n");refresh_command_win ();return;
}
ptr=parse_word (ptr,buffer);
group_num=atol (buffer);
if (group_num < 0 || group_num >= file_system_info.groups_count) {
wprintw (command_win,"Error - Entry number out of bounds\n");refresh_command_win ();return;
}
device_offset=file_system_info.first_group_desc_offset+group_num*sizeof (struct ext2_group_desc);
sprintf (buffer,"setoffset %ld",device_offset);dispatch (buffer);
strcpy (buffer,"show");dispatch (buffer);
group_info.group_num=group_num;
}
void type_ext2_group_desc___gocopy (char *command_line)
{
unsigned long copy_num,offset;
char *ptr,buffer [80];
ptr=parse_word (command_line,buffer);
if (*ptr==0) {
wprintw (command_win,"Error - No argument specified\n");refresh_command_win ();return;
}
ptr=parse_word (ptr,buffer);
copy_num=atol (buffer);
offset=file_system_info.first_group_desc_offset+copy_num*file_system_info.super_block.s_blocks_per_group*file_system_info.block_size;
if (offset > file_system_info.file_system_size) {
wprintw (command_win,"Error - Copy number out of bounds\n");refresh_command_win ();return;
}
group_info.copy_num=copy_num;
device_offset=offset+group_info.group_num*sizeof (struct ext2_group_desc);
sprintf (buffer,"setoffset %ld",device_offset);dispatch (buffer);
strcpy (buffer,"show");dispatch (buffer);
}
void type_ext2_group_desc___show (char *command_line)
{
long group_num,temp;
temp=(device_offset-file_system_info.first_group_desc_offset) % (file_system_info.super_block.s_blocks_per_group*file_system_info.block_size);
group_num=temp/sizeof (struct ext2_group_desc);
show (command_line);
wmove (show_win,1,0);wprintw (show_win,"\n");wmove (show_win,2,0);
wprintw (show_win,"Group %ld of %ld ",group_num,file_system_info.groups_count-1);
wprintw (show_win,"in copy %ld ",group_info.copy_num);
if (group_info.copy_num==0) wprintw (show_win,"(Main copy)");
wprintw (show_win,"\n");refresh_show_win ();
if (group_num==0) {
wprintw (command_win,"Reached first group descriptor\n");
wrefresh (command_win);
}
if (group_num==file_system_info.groups_count-1) {
wprintw (command_win,"Reached last group descriptor\n");
wrefresh (command_win);
}
}
void type_ext2_group_desc___inode (char *command_line)
{
long inode_offset;
char buffer [80];
inode_offset=type_data.u.t_ext2_group_desc.bg_inode_table;
sprintf (buffer,"setoffset block %ld",inode_offset);dispatch (buffer);
sprintf (buffer,"settype ext2_inode");dispatch (buffer);
}
void type_ext2_group_desc___blockbitmap (char *command_line)
{
long block_bitmap_offset;
char buffer [80];
block_bitmap_info.entry_num=0;
block_bitmap_info.group_num=group_info.group_num;
block_bitmap_offset=type_data.u.t_ext2_group_desc.bg_block_bitmap;
sprintf (buffer,"setoffset block %ld",block_bitmap_offset);dispatch (buffer);
sprintf (buffer,"settype block_bitmap");dispatch (buffer);
}
void type_ext2_group_desc___inodebitmap (char *command_line)
{
long inode_bitmap_offset;
char buffer [80];
inode_bitmap_info.entry_num=0;
inode_bitmap_info.group_num=group_info.group_num;
inode_bitmap_offset=type_data.u.t_ext2_group_desc.bg_inode_bitmap;
sprintf (buffer,"setoffset block %ld",inode_bitmap_offset);dispatch (buffer);
sprintf (buffer,"settype inode_bitmap");dispatch (buffer);
}
void type_ext2_group_desc___setactivecopy (char *command_line)
{
struct ext2_group_desc gd;
gd=type_data.u.t_ext2_group_desc;
dispatch ("gocopy 0");
type_data.u.t_ext2_group_desc=gd;
dispatch ("show");
}
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