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