1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __ARCHIVE_H
#define __ARCHIVE_H
#include <stdint.h>
/*
* Archive file layout:
*
* +----------------------------------+
* | root header |
* +----------------------------------+
* | file_header[0] |
* +----------------------------------+
* | file_header[1] |
* +----------------------------------+
* | ... |
* +----------------------------------+
* | file_header[count-1] |
* +----------------------------------+
* | file(0) content |
* +----------------------------------+
* | file(1) content |
* +----------------------------------+
* | ... |
* +----------------------------------+
* | file(count-1) content |
* +----------------------------------+
*/
#define VERSION 0
#define CBAR_MAGIC "CBAR"
#define NAME_LENGTH 32
/* Root header */
struct directory {
char magic[4];
uint32_t version; /* version of the header. little endian */
uint32_t size; /* total size of archive. little endian */
uint32_t count; /* number of files. little endian */
};
/* File header */
struct dentry {
/* file name. null-terminated if shorter than NAME_LENGTH */
char name[NAME_LENGTH];
/* file offset from the root header. little endian */
uint32_t offset;
/* file size. little endian */
uint32_t size;
};
static inline struct dentry *get_first_dentry(const struct directory *dir)
{
return (struct dentry *)(dir + 1);
}
static inline uint32_t get_first_offset(const struct directory *dir)
{
return sizeof(struct directory) + sizeof(struct dentry) * dir->count;
}
#endif
|
