pack: move clear_delta_base_cache(), packed_object_info(), unpack_entry()
[git/git.git] / packfile.h
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1#ifndef PACKFILE_H
2#define PACKFILE_H
3
4/*
5 * Generate the filename to be used for a pack file with checksum "sha1" and
6 * extension "ext". The result is written into the strbuf "buf", overwriting
7 * any existing contents. A pointer to buf->buf is returned as a convenience.
8 *
9 * Example: odb_pack_name(out, sha1, "idx") => ".git/objects/pack/pack-1234..idx"
10 */
11extern char *odb_pack_name(struct strbuf *buf, const unsigned char *sha1, const char *ext);
12
13/*
14 * Return the name of the (local) packfile with the specified sha1 in
15 * its name. The return value is a pointer to memory that is
16 * overwritten each time this function is called.
17 */
18extern char *sha1_pack_name(const unsigned char *sha1);
19
20/*
21 * Return the name of the (local) pack index file with the specified
22 * sha1 in its name. The return value is a pointer to memory that is
23 * overwritten each time this function is called.
24 */
25extern char *sha1_pack_index_name(const unsigned char *sha1);
26
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27extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
28
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29/* A hook to report invalid files in pack directory */
30#define PACKDIR_FILE_PACK 1
31#define PACKDIR_FILE_IDX 2
32#define PACKDIR_FILE_GARBAGE 4
33extern void (*report_garbage)(unsigned seen_bits, const char *path);
34
35extern void prepare_packed_git(void);
36extern void reprepare_packed_git(void);
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37extern void install_packed_git(struct packed_git *pack);
38
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39/*
40 * Give a rough count of objects in the repository. This sacrifices accuracy
41 * for speed.
42 */
43unsigned long approximate_object_count(void);
44
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45extern void pack_report(void);
46
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47/*
48 * mmap the index file for the specified packfile (if it is not
49 * already mmapped). Return 0 on success.
50 */
51extern int open_pack_index(struct packed_git *);
52
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53/*
54 * munmap the index file for the specified packfile (if it is
55 * currently mmapped).
56 */
57extern void close_pack_index(struct packed_git *);
58
84f80ad5 59extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned long *);
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60extern void close_pack_windows(struct packed_git *);
61extern void close_all_packs(void);
97de1803 62extern void unuse_pack(struct pack_window **);
f1d8130b 63extern void clear_delta_base_cache(void);
9a428653 64extern struct packed_git *add_packed_git(const char *path, size_t path_len, int local);
3836d88a 65
f1d8130b 66extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
32b42e15 67extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
7b3aa75d 68extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
3588dd6e 69extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *);
32b42e15 70
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71extern void release_pack_memory(size_t);
72
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73extern int open_packed_git(struct packed_git *p);
74
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75/* global flag to enable extra checks when accessing packed objects */
76extern int do_check_packed_object_crc;
77
78extern int packed_object_info(struct packed_git *pack, off_t offset, struct object_info *);
79
80extern void mark_bad_packed_object(struct packed_git *p, const unsigned char *sha1);
81extern const struct packed_git *has_packed_and_bad(const unsigned char *sha1);
82
4f39cd82 83#endif