7 * Generate the filename to be used for a pack file with checksum "sha1" and
8 * extension "ext". The result is written into the strbuf "buf", overwriting
9 * any existing contents. A pointer to buf->buf is returned as a convenience.
11 * Example: odb_pack_name(out, sha1, "idx") => ".git/objects/pack/pack-1234..idx"
13 extern char *odb_pack_name(struct strbuf *buf, const unsigned char *sha1, const char *ext);
16 * Return the name of the (local) packfile with the specified sha1 in
17 * its name. The return value is a pointer to memory that is
18 * overwritten each time this function is called.
20 extern char *sha1_pack_name(const unsigned char *sha1);
23 * Return the name of the (local) pack index file with the specified
24 * sha1 in its name. The return value is a pointer to memory that is
25 * overwritten each time this function is called.
27 extern char *sha1_pack_index_name(const unsigned char *sha1);
29 extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
31 typedef void each_file_in_pack_dir_fn(const char *full_path, size_t full_path_len,
32 const char *file_pach, void *data);
33 void for_each_file_in_pack_dir(const char *objdir,
34 each_file_in_pack_dir_fn fn,
37 /* A hook to report invalid files in pack directory */
38 #define PACKDIR_FILE_PACK 1
39 #define PACKDIR_FILE_IDX 2
40 #define PACKDIR_FILE_GARBAGE 4
41 extern void (*report_garbage)(unsigned seen_bits, const char *path);
43 extern void reprepare_packed_git(struct repository *r);
44 extern void install_packed_git(struct repository *r, struct packed_git *pack);
46 struct packed_git *get_packed_git(struct repository *r);
47 struct list_head *get_packed_git_mru(struct repository *r);
50 * Give a rough count of objects in the repository. This sacrifices accuracy
53 unsigned long approximate_object_count(void);
55 extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
56 struct packed_git *packs);
58 extern void pack_report(void);
61 * mmap the index file for the specified packfile (if it is not
62 * already mmapped). Return 0 on success.
64 extern int open_pack_index(struct packed_git *);
67 * munmap the index file for the specified packfile (if it is
70 extern void close_pack_index(struct packed_git *);
72 extern uint32_t get_pack_fanout(struct packed_git *p, uint32_t value);
74 extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned long *);
75 extern void close_pack_windows(struct packed_git *);
76 extern void close_pack(struct packed_git *);
77 extern void close_all_packs(struct raw_object_store *o);
78 extern void unuse_pack(struct pack_window **);
79 extern void clear_delta_base_cache(void);
80 extern struct packed_git *add_packed_git(const char *path, size_t path_len, int local);
83 * Make sure that a pointer access into an mmap'd index file is within bounds,
84 * and can provide at least 8 bytes of data.
86 * Note that this is only necessary for variable-length segments of the file
87 * (like the 64-bit extended offset table), as we compare the size to the
88 * fixed-length parts when we open the file.
90 extern void check_pack_index_ptr(const struct packed_git *p, const void *ptr);
93 * Perform binary search on a pack-index for a given oid. Packfile is expected to
94 * have a valid pack-index.
96 * See 'bsearch_hash' for more information.
98 int bsearch_pack(const struct object_id *oid, const struct packed_git *p, uint32_t *result);
101 * Return the SHA-1 of the nth object within the specified packfile.
102 * Open the index if it is not already open. The return value points
103 * at the SHA-1 within the mmapped index. Return NULL if there is an
106 extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t n);
108 * Like nth_packed_object_sha1, but write the data into the object specified by
109 * the the first argument. Returns the first argument on success, and NULL on
112 extern const struct object_id *nth_packed_object_oid(struct object_id *, struct packed_git *, uint32_t n);
115 * Return the offset of the nth object within the specified packfile.
116 * The index must already be opened.
118 extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t n);
121 * If the object named sha1 is present in the specified packfile,
122 * return its offset within the packfile; otherwise, return 0.
124 extern off_t find_pack_entry_one(const unsigned char *sha1, struct packed_git *);
126 extern int is_pack_valid(struct packed_git *);
127 extern void *unpack_entry(struct repository *r, struct packed_git *, off_t, enum object_type *, unsigned long *);
128 extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
129 extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
130 extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *);
132 extern void release_pack_memory(size_t);
134 /* global flag to enable extra checks when accessing packed objects */
135 extern int do_check_packed_object_crc;
137 extern int packed_object_info(struct repository *r,
138 struct packed_git *pack,
139 off_t offset, struct object_info *);
141 extern void mark_bad_packed_object(struct packed_git *p, const unsigned char *sha1);
142 extern const struct packed_git *has_packed_and_bad(const unsigned char *sha1);
145 * Iff a pack file in the given repository contains the object named by sha1,
146 * return true and store its location to e.
148 extern int find_pack_entry(struct repository *r, const struct object_id *oid, struct pack_entry *e);
150 extern int has_object_pack(const struct object_id *oid);
152 extern int has_pack_index(const unsigned char *sha1);
155 * Only iterate over packs obtained from the promisor remote.
157 #define FOR_EACH_OBJECT_PROMISOR_ONLY 2
160 * Iterate over packed objects in both the local
161 * repository and any alternates repositories (unless the
162 * FOR_EACH_OBJECT_LOCAL_ONLY flag, defined in cache.h, is set).
164 typedef int each_packed_object_fn(const struct object_id *oid,
165 struct packed_git *pack,
168 extern int for_each_object_in_pack(struct packed_git *p, each_packed_object_fn, void *data);
169 extern int for_each_packed_object(each_packed_object_fn, void *, unsigned flags);
172 * Return 1 if an object in a promisor packfile is or refers to the given
173 * object, 0 otherwise.
175 extern int is_promisor_object(const struct object_id *oid);