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Commit | Line | Data |
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583a1ce5 TT |
1 | /* |
2 | ||
3 | /usr/src/ext2ed/ext2_com.c | |
4 | ||
5 | A part of the extended file system 2 disk editor. | |
6 | ||
7 | -------------------------------------- | |
8 | Extended-2 filesystem General commands | |
9 | -------------------------------------- | |
10 | ||
11 | The commands here will be registered when we are editing an ext2 filesystem | |
12 | ||
13 | First written on: July 28 1995 | |
14 | ||
15 | Copyright (C) 1995 Gadi Oxman | |
16 | ||
17 | */ | |
18 | ||
d1154eb4 | 19 | #include "config.h" |
583a1ce5 TT |
20 | #include <stdio.h> |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | ||
24 | #include "ext2ed.h" | |
25 | ||
26 | void type_ext2___super (char *command_line) | |
27 | ||
28 | /* | |
29 | ||
30 | We are moving to the superblock - Just use setoffset and settype. The offset was gathered in the | |
31 | initialization phase (but is constant - 1024). | |
32 | ||
33 | */ | |
34 | ||
35 | { | |
36 | char buffer [80]; | |
efc6f628 | 37 | |
583a1ce5 TT |
38 | super_info.copy_num=0; |
39 | sprintf (buffer,"setoffset %ld",file_system_info.super_block_offset);dispatch (buffer); | |
40 | sprintf (buffer,"settype ext2_super_block");dispatch (buffer); | |
41 | } | |
42 | ||
43 | void type_ext2___cd (char *command_line) | |
44 | ||
45 | /* | |
46 | ||
47 | A global cd command - The path should start with /. | |
48 | ||
49 | We implement it through dispatching to our primitive functions. | |
50 | ||
51 | */ | |
52 | ||
53 | { | |
54 | char temp [80],buffer [80],*ptr; | |
efc6f628 | 55 | |
583a1ce5 TT |
56 | ptr=parse_word (command_line,buffer); |
57 | if (*ptr==0) { | |
58 | wprintw (command_win,"Error - No argument specified\n");refresh_command_win ();return; | |
59 | } | |
60 | ptr=parse_word (ptr,buffer); | |
efc6f628 | 61 | |
583a1ce5 TT |
62 | if (buffer [0] != '/') { |
63 | wprintw (command_win,"Error - Use a full pathname (begin with '/')\n");refresh_command_win ();return; | |
64 | } | |
65 | ||
66 | /* Note the various dispatches below - They should be intuitive if you know the ext2 filesystem structure */ | |
67 | ||
68 | dispatch ("super");dispatch ("group");dispatch ("inode");dispatch ("next");dispatch ("dir"); | |
69 | if (buffer [1] != 0) { | |
70 | sprintf (temp,"cd %s",buffer+1);dispatch (temp); | |
71 | } | |
72 | } | |
73 | ||
74 | void type_ext2___group (char *command_line) | |
75 | ||
76 | /* | |
77 | ||
78 | We go to the group descriptors. | |
79 | First, we go to the first group descriptor in the main copy. | |
80 | Then, we use the group's entry command to pass to another group. | |
81 | ||
82 | */ | |
83 | ||
84 | { | |
85 | long group_num=0; | |
86 | char *ptr,buffer [80]; | |
efc6f628 | 87 | |
583a1ce5 TT |
88 | ptr=parse_word (command_line,buffer); |
89 | if (*ptr!=0) { | |
90 | ptr=parse_word (ptr,buffer); | |
91 | group_num=atol (buffer); | |
92 | } | |
93 | ||
94 | group_info.copy_num=0;group_info.group_num=0; | |
95 | sprintf (buffer,"setoffset %ld",file_system_info.first_group_desc_offset);dispatch (buffer); | |
96 | sprintf (buffer,"settype ext2_group_desc");dispatch (buffer); | |
97 | sprintf (buffer,"entry %ld",group_num);dispatch (buffer); | |
98 | } |