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138 lines
5.1 KiB
138 lines
5.1 KiB
#ifndef PACKFILE_H |
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#define PACKFILE_H |
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/* |
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* Generate the filename to be used for a pack file with checksum "sha1" and |
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* extension "ext". The result is written into the strbuf "buf", overwriting |
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* any existing contents. A pointer to buf->buf is returned as a convenience. |
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* |
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* Example: odb_pack_name(out, sha1, "idx") => ".git/objects/pack/pack-1234..idx" |
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*/ |
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extern char *odb_pack_name(struct strbuf *buf, const unsigned char *sha1, const char *ext); |
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/* |
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* Return the name of the (local) packfile with the specified sha1 in |
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* its name. The return value is a pointer to memory that is |
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* overwritten each time this function is called. |
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*/ |
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extern char *sha1_pack_name(const unsigned char *sha1); |
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/* |
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* Return the name of the (local) pack index file with the specified |
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* sha1 in its name. The return value is a pointer to memory that is |
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* overwritten each time this function is called. |
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*/ |
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extern char *sha1_pack_index_name(const unsigned char *sha1); |
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extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path); |
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/* A hook to report invalid files in pack directory */ |
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#define PACKDIR_FILE_PACK 1 |
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#define PACKDIR_FILE_IDX 2 |
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#define PACKDIR_FILE_GARBAGE 4 |
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extern void (*report_garbage)(unsigned seen_bits, const char *path); |
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extern void prepare_packed_git(void); |
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extern void reprepare_packed_git(void); |
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extern void install_packed_git(struct packed_git *pack); |
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/* |
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* Give a rough count of objects in the repository. This sacrifices accuracy |
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* for speed. |
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*/ |
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unsigned long approximate_object_count(void); |
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extern struct packed_git *find_sha1_pack(const unsigned char *sha1, |
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struct packed_git *packs); |
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extern void pack_report(void); |
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/* |
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* mmap the index file for the specified packfile (if it is not |
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* already mmapped). Return 0 on success. |
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*/ |
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extern int open_pack_index(struct packed_git *); |
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/* |
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* munmap the index file for the specified packfile (if it is |
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* currently mmapped). |
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*/ |
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extern void close_pack_index(struct packed_git *); |
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extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned long *); |
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extern void close_pack_windows(struct packed_git *); |
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extern void close_all_packs(void); |
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extern void unuse_pack(struct pack_window **); |
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extern void clear_delta_base_cache(void); |
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extern struct packed_git *add_packed_git(const char *path, size_t path_len, int local); |
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/* |
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* Make sure that a pointer access into an mmap'd index file is within bounds, |
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* and can provide at least 8 bytes of data. |
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* |
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* Note that this is only necessary for variable-length segments of the file |
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* (like the 64-bit extended offset table), as we compare the size to the |
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* fixed-length parts when we open the file. |
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*/ |
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extern void check_pack_index_ptr(const struct packed_git *p, const void *ptr); |
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/* |
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* Return the SHA-1 of the nth object within the specified packfile. |
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* Open the index if it is not already open. The return value points |
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* at the SHA-1 within the mmapped index. Return NULL if there is an |
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* error. |
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*/ |
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extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t n); |
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/* |
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* Like nth_packed_object_sha1, but write the data into the object specified by |
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* the the first argument. Returns the first argument on success, and NULL on |
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* error. |
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*/ |
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extern const struct object_id *nth_packed_object_oid(struct object_id *, struct packed_git *, uint32_t n); |
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/* |
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* Return the offset of the nth object within the specified packfile. |
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* The index must already be opened. |
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*/ |
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extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t n); |
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/* |
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* If the object named sha1 is present in the specified packfile, |
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* return its offset within the packfile; otherwise, return 0. |
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*/ |
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extern off_t find_pack_entry_one(const unsigned char *sha1, struct packed_git *); |
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extern int is_pack_valid(struct packed_git *); |
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extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *); |
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extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep); |
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extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t); |
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extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *); |
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extern void release_pack_memory(size_t); |
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/* global flag to enable extra checks when accessing packed objects */ |
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extern int do_check_packed_object_crc; |
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extern int packed_object_info(struct packed_git *pack, off_t offset, struct object_info *); |
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extern void mark_bad_packed_object(struct packed_git *p, const unsigned char *sha1); |
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extern const struct packed_git *has_packed_and_bad(const unsigned char *sha1); |
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extern int find_pack_entry(const unsigned char *sha1, struct pack_entry *e); |
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extern int has_sha1_pack(const unsigned char *sha1); |
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extern int has_pack_index(const unsigned char *sha1); |
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/* |
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* Iterate over packed objects in both the local |
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* repository and any alternates repositories (unless the |
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* FOR_EACH_OBJECT_LOCAL_ONLY flag, defined in cache.h, is set). |
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*/ |
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typedef int each_packed_object_fn(const struct object_id *oid, |
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struct packed_git *pack, |
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uint32_t pos, |
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void *data); |
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extern int for_each_packed_object(each_packed_object_fn, void *, unsigned flags); |
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#endif
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