7 /* in object-store.h */
12 * Generate the filename to be used for a pack file with checksum "sha1" and
13 * extension "ext". The result is written into the strbuf "buf", overwriting
14 * any existing contents. A pointer to buf->buf is returned as a convenience.
16 * Example: odb_pack_name(out, sha1, "idx") => ".git/objects/pack/pack-1234..idx"
18 extern char *odb_pack_name(struct strbuf
*buf
, const unsigned char *sha1
, const char *ext
);
21 * Return the name of the (local) packfile with the specified sha1 in
22 * its name. The return value is a pointer to memory that is
23 * overwritten each time this function is called.
25 extern char *sha1_pack_name(const unsigned char *sha1
);
28 * Return the name of the (local) pack index file with the specified
29 * sha1 in its name. The return value is a pointer to memory that is
30 * overwritten each time this function is called.
32 extern char *sha1_pack_index_name(const unsigned char *sha1
);
34 extern struct packed_git
*parse_pack_index(unsigned char *sha1
, const char *idx_path
);
36 /* A hook to report invalid files in pack directory */
37 #define PACKDIR_FILE_PACK 1
38 #define PACKDIR_FILE_IDX 2
39 #define PACKDIR_FILE_GARBAGE 4
40 extern void (*report_garbage
)(unsigned seen_bits
, const char *path
);
42 extern void reprepare_packed_git(struct repository
*r
);
43 extern void install_packed_git(struct repository
*r
, struct packed_git
*pack
);
45 struct packed_git
*get_packed_git(struct repository
*r
);
46 struct list_head
*get_packed_git_mru(struct repository
*r
);
49 * Give a rough count of objects in the repository. This sacrifices accuracy
52 unsigned long approximate_object_count(void);
54 extern struct packed_git
*find_sha1_pack(const unsigned char *sha1
,
55 struct packed_git
*packs
);
57 extern void pack_report(void);
60 * mmap the index file for the specified packfile (if it is not
61 * already mmapped). Return 0 on success.
63 extern int open_pack_index(struct packed_git
*);
66 * munmap the index file for the specified packfile (if it is
69 extern void close_pack_index(struct packed_git
*);
71 extern unsigned char *use_pack(struct packed_git
*, struct pack_window
**, off_t
, unsigned long *);
72 extern void close_pack_windows(struct packed_git
*);
73 extern void close_pack(struct packed_git
*);
74 extern void close_all_packs(struct raw_object_store
*o
);
75 extern void unuse_pack(struct pack_window
**);
76 extern void clear_delta_base_cache(void);
77 extern struct packed_git
*add_packed_git(const char *path
, size_t path_len
, int local
);
80 * Make sure that a pointer access into an mmap'd index file is within bounds,
81 * and can provide at least 8 bytes of data.
83 * Note that this is only necessary for variable-length segments of the file
84 * (like the 64-bit extended offset table), as we compare the size to the
85 * fixed-length parts when we open the file.
87 extern void check_pack_index_ptr(const struct packed_git
*p
, const void *ptr
);
90 * Perform binary search on a pack-index for a given oid. Packfile is expected to
91 * have a valid pack-index.
93 * See 'bsearch_hash' for more information.
95 int bsearch_pack(const struct object_id
*oid
, const struct packed_git
*p
, uint32_t *result
);
98 * Return the SHA-1 of the nth object within the specified packfile.
99 * Open the index if it is not already open. The return value points
100 * at the SHA-1 within the mmapped index. Return NULL if there is an
103 extern const unsigned char *nth_packed_object_sha1(struct packed_git
*, uint32_t n
);
105 * Like nth_packed_object_sha1, but write the data into the object specified by
106 * the the first argument. Returns the first argument on success, and NULL on
109 extern const struct object_id
*nth_packed_object_oid(struct object_id
*, struct packed_git
*, uint32_t n
);
112 * Return the offset of the nth object within the specified packfile.
113 * The index must already be opened.
115 extern off_t
nth_packed_object_offset(const struct packed_git
*, uint32_t n
);
118 * If the object named sha1 is present in the specified packfile,
119 * return its offset within the packfile; otherwise, return 0.
121 extern off_t
find_pack_entry_one(const unsigned char *sha1
, struct packed_git
*);
123 extern int is_pack_valid(struct packed_git
*);
124 extern void *unpack_entry(struct repository
*r
, struct packed_git
*, off_t
, enum object_type
*, unsigned long *);
125 extern unsigned long unpack_object_header_buffer(const unsigned char *buf
, unsigned long len
, enum object_type
*type
, unsigned long *sizep
);
126 extern unsigned long get_size_from_delta(struct packed_git
*, struct pack_window
**, off_t
);
127 extern int unpack_object_header(struct packed_git
*, struct pack_window
**, off_t
*, unsigned long *);
129 extern void release_pack_memory(size_t);
131 /* global flag to enable extra checks when accessing packed objects */
132 extern int do_check_packed_object_crc
;
134 extern int packed_object_info(struct repository
*r
,
135 struct packed_git
*pack
,
136 off_t offset
, struct object_info
*);
138 extern void mark_bad_packed_object(struct packed_git
*p
, const unsigned char *sha1
);
139 extern const struct packed_git
*has_packed_and_bad(const unsigned char *sha1
);
142 * Iff a pack file in the given repository contains the object named by sha1,
143 * return true and store its location to e.
145 extern int find_pack_entry(struct repository
*r
, const struct object_id
*oid
, struct pack_entry
*e
);
147 extern int has_object_pack(const struct object_id
*oid
);
149 extern int has_pack_index(const unsigned char *sha1
);
152 * Return 1 if an object in a promisor packfile is or refers to the given
153 * object, 0 otherwise.
155 extern int is_promisor_object(const struct object_id
*oid
);