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 <stdio.h> 16 #include <stdlib.h> 17 #include <string.h> 18 19 #include "ext2ed.h" 20 21 void 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 37 void 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 53 void 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 79 void 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 } 105 106 107 void 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 } 133 134 void 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 } 144 145 void 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 } 158 159 void 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 } 172 173 void 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
