1 #ifndef PACK_H
2 #define PACK_H
4 /*
5 * The packed object type is stored in 3 bits.
6 * The type value 0 is a reserved prefix if ever there is more than 7
7 * object types, or any future format extensions.
8 */
9 enum object_type {
10 OBJ_EXT = 0,
11 OBJ_COMMIT = 1,
12 OBJ_TREE = 2,
13 OBJ_BLOB = 3,
14 OBJ_TAG = 4,
15 /* 5/6 for future expansion */
16 OBJ_DELTA = 7,
17 };
19 /*
20 * Packed object header
21 */
22 #define PACK_SIGNATURE 0x5041434b /* "PACK" */
23 #define PACK_VERSION 2
24 #define pack_version_ok(v) ((v) == htonl(2) || (v) == htonl(3))
25 struct pack_header {
26 unsigned int hdr_signature;
27 unsigned int hdr_version;
28 unsigned int hdr_entries;
29 };
31 extern int verify_pack(struct packed_git *, int);
32 extern int check_reuse_pack_delta(struct packed_git *, unsigned long,
33 unsigned char *, unsigned long *,
34 enum object_type *);
35 #endif