Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 1 | /* |
| 2 | |
| 3 | /usr/src/ext2ed/inodebitmap_com.c |
| 4 | |
| 5 | A part of the extended file system 2 disk editor. |
| 6 | |
| 7 | ------------------------- |
| 8 | Handles the inode bitmap. |
| 9 | ------------------------- |
| 10 | |
| 11 | Please refer to the documentation in blockbitmap_com.c - Those two files are almost equal. |
| 12 | |
| 13 | First written on: July 25 1995 |
| 14 | |
| 15 | Copyright (C) 1995 Gadi Oxman |
| 16 | |
| 17 | */ |
| 18 | |
Theodore Ts'o | d1154eb | 2011-09-18 17:34:37 -0400 | [diff] [blame] | 19 | #include "config.h" |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 20 | #include <stdio.h> |
| 21 | #include <stdlib.h> |
| 22 | #include <string.h> |
| 23 | |
| 24 | #include "ext2ed.h" |
| 25 | |
| 26 | |
| 27 | void type_ext2_inode_bitmap___entry (char *command_line) |
| 28 | |
| 29 | { |
| 30 | unsigned long entry_num; |
| 31 | char *ptr,buffer [80]; |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 32 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 33 | ptr=parse_word (command_line,buffer); |
| 34 | if (*ptr==0) { |
| 35 | wprintw (command_win,"Error - No argument specified\n");refresh_command_win ();return; |
| 36 | } |
| 37 | ptr=parse_word (ptr,buffer); |
| 38 | |
| 39 | entry_num=atol (buffer); |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 40 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 41 | if (entry_num >= file_system_info.super_block.s_inodes_per_group) { |
| 42 | wprintw (command_win,"Error - Entry number out of bounds\n");refresh_command_win ();return; |
| 43 | } |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 44 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 45 | inode_bitmap_info.entry_num=entry_num; |
| 46 | strcpy (buffer,"show");dispatch (buffer); |
| 47 | } |
| 48 | |
| 49 | void type_ext2_inode_bitmap___next (char *command_line) |
| 50 | |
| 51 | { |
| 52 | long entry_offset=1; |
| 53 | char *ptr,buffer [80]; |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 54 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 55 | ptr=parse_word (command_line,buffer); |
| 56 | if (*ptr!=0) { |
| 57 | ptr=parse_word (ptr,buffer); |
| 58 | entry_offset=atol (buffer); |
| 59 | } |
| 60 | |
| 61 | sprintf (buffer,"entry %ld",inode_bitmap_info.entry_num+entry_offset); |
| 62 | dispatch (buffer); |
| 63 | } |
| 64 | |
| 65 | void type_ext2_inode_bitmap___prev (char *command_line) |
| 66 | |
| 67 | { |
| 68 | long entry_offset=1; |
| 69 | char *ptr,buffer [80]; |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 70 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 71 | ptr=parse_word (command_line,buffer); |
| 72 | if (*ptr!=0) { |
| 73 | ptr=parse_word (ptr,buffer); |
| 74 | entry_offset=atol (buffer); |
| 75 | } |
| 76 | |
| 77 | sprintf (buffer,"entry %ld",inode_bitmap_info.entry_num-entry_offset); |
| 78 | dispatch (buffer); |
| 79 | } |
| 80 | |
| 81 | void type_ext2_inode_bitmap___allocate (char *command_line) |
| 82 | |
| 83 | { |
| 84 | long entry_num,num=1; |
| 85 | char *ptr,buffer [80]; |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 86 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 87 | ptr=parse_word (command_line,buffer); |
| 88 | if (*ptr!=0) { |
| 89 | ptr=parse_word (ptr,buffer); |
| 90 | num=atol (buffer); |
| 91 | } |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 92 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 93 | entry_num=inode_bitmap_info.entry_num; |
| 94 | if (num > file_system_info.super_block.s_inodes_per_group-entry_num) { |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 95 | wprintw (command_win,"Error - There aren't that much inodes in the group\n"); |
| 96 | refresh_command_win ();return; |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 97 | } |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 98 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 99 | while (num) { |
| 100 | allocate_inode (entry_num); |
| 101 | num--;entry_num++; |
| 102 | } |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 103 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 104 | dispatch ("show"); |
| 105 | } |
| 106 | |
| 107 | void type_ext2_inode_bitmap___deallocate (char *command_line) |
| 108 | |
| 109 | { |
| 110 | long entry_num,num=1; |
| 111 | char *ptr,buffer [80]; |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 112 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 113 | ptr=parse_word (command_line,buffer); |
| 114 | if (*ptr!=0) { |
| 115 | ptr=parse_word (ptr,buffer); |
| 116 | num=atol (buffer); |
| 117 | } |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 118 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 119 | entry_num=inode_bitmap_info.entry_num; |
| 120 | if (num > file_system_info.super_block.s_inodes_per_group-entry_num) { |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 121 | wprintw (command_win,"Error - There aren't that much inodes in the group\n"); |
| 122 | refresh_command_win ();return; |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 123 | } |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 124 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 125 | while (num) { |
| 126 | deallocate_inode (entry_num); |
| 127 | num--;entry_num++; |
| 128 | } |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 129 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 130 | dispatch ("show"); |
| 131 | } |
| 132 | |
| 133 | |
| 134 | void allocate_inode (long entry_num) |
| 135 | |
| 136 | { |
| 137 | unsigned char bit_mask=1; |
| 138 | int byte_offset,j; |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 139 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 140 | byte_offset=entry_num/8; |
| 141 | for (j=0;j<entry_num%8;j++) |
| 142 | bit_mask*=2; |
| 143 | type_data.u.buffer [byte_offset] |= bit_mask; |
| 144 | } |
| 145 | |
| 146 | void deallocate_inode (long entry_num) |
| 147 | |
| 148 | { |
| 149 | unsigned char bit_mask=1; |
| 150 | int byte_offset,j; |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 151 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 152 | byte_offset=entry_num/8; |
| 153 | for (j=0;j<entry_num%8;j++) |
| 154 | bit_mask*=2; |
| 155 | bit_mask^=0xff; |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 156 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 157 | type_data.u.buffer [byte_offset] &= bit_mask; |
| 158 | } |
| 159 | |
| 160 | void type_ext2_inode_bitmap___show (char *command_line) |
| 161 | |
| 162 | { |
| 163 | int i,j; |
| 164 | unsigned char *ptr; |
| 165 | unsigned long inode_num,entry_num; |
| 166 | |
| 167 | ptr=type_data.u.buffer; |
| 168 | show_pad_info.line=0;show_pad_info.max_line=-1; |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 169 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 170 | wmove (show_pad,0,0); |
| 171 | for (i=0,entry_num=0;i<file_system_info.super_block.s_inodes_per_group/8;i++,ptr++) { |
| 172 | for (j=1;j<=128;j*=2) { |
| 173 | if (entry_num==inode_bitmap_info.entry_num) { |
| 174 | wattrset (show_pad,A_REVERSE); |
| 175 | show_pad_info.line=show_pad_info.max_line-show_pad_info.display_lines/2; |
| 176 | } |
| 177 | |
| 178 | if ((*ptr) & j) |
| 179 | wprintw (show_pad,"1"); |
| 180 | else |
| 181 | wprintw (show_pad,"0"); |
| 182 | |
| 183 | if (entry_num==inode_bitmap_info.entry_num) |
| 184 | wattrset (show_pad,A_NORMAL); |
| 185 | |
| 186 | entry_num++; |
| 187 | } |
| 188 | wprintw (show_pad," "); |
| 189 | if (i%8==7) { |
| 190 | wprintw (show_pad,"\n"); |
| 191 | show_pad_info.max_line++; |
| 192 | } |
| 193 | } |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 194 | |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 195 | if (i%8!=7) { |
| 196 | wprintw (show_pad,"\n"); |
| 197 | show_pad_info.max_line++; |
| 198 | } |
| 199 | |
Theodore Ts'o | efc6f62 | 2008-08-27 23:07:54 -0400 | [diff] [blame] | 200 | refresh_show_pad (); |
Theodore Ts'o | 583a1ce | 2002-05-11 13:00:22 -0400 | [diff] [blame] | 201 | show_info (); |
| 202 | wmove (show_win,1,0);wprintw (show_win,"Inode bitmap of block group %ld\n",inode_bitmap_info.group_num); |
| 203 | |
| 204 | inode_num=1+inode_bitmap_info.entry_num+inode_bitmap_info.group_num*file_system_info.super_block.s_inodes_per_group; |
| 205 | wprintw (show_win,"Status of inode %ld - ",inode_num); |
| 206 | ptr=type_data.u.buffer+inode_bitmap_info.entry_num/8; |
| 207 | j=1; |
| 208 | for (i=inode_bitmap_info.entry_num % 8;i>0;i--) |
| 209 | j*=2; |
| 210 | if ((*ptr) & j) |
| 211 | wprintw (show_win,"Allocated\n"); |
| 212 | else |
| 213 | wprintw (show_win,"Free\n"); |
| 214 | refresh_show_win (); |
| 215 | } |