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 } 184
