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
type_ext2_group_desc___next(char * command_line)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
type_ext2_group_desc___prev(char * command_line)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
type_ext2_group_desc___entry(char * command_line)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
type_ext2_group_desc___gocopy(char * command_line)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
type_ext2_group_desc___show(char * command_line)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
type_ext2_group_desc___inode(char * command_line)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
type_ext2_group_desc___blockbitmap(char * command_line)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
type_ext2_group_desc___inodebitmap(char * command_line)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
type_ext2_group_desc___setactivecopy(char * command_line)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 }
184