mirror of
https://github.com/git/git.git
synced 2024-11-24 10:26:17 +08:00
fcb6df3254
The codepath around object-info API has been taught to take the repository object (which in turn tells the API which object store the objects are to be located). * sb/oid-object-info: cache.h: allow oid_object_info to handle arbitrary repositories packfile: add repository argument to cache_or_unpack_entry packfile: add repository argument to unpack_entry packfile: add repository argument to read_object packfile: add repository argument to packed_object_info packfile: add repository argument to packed_to_object_type packfile: add repository argument to retry_bad_packed_offset cache.h: add repository argument to oid_object_info cache.h: add repository argument to oid_object_info_extended
170 lines
6.1 KiB
C
170 lines
6.1 KiB
C
#ifndef PACKFILE_H
|
|
#define PACKFILE_H
|
|
|
|
#include "oidset.h"
|
|
|
|
/*
|
|
* Generate the filename to be used for a pack file with checksum "sha1" and
|
|
* extension "ext". The result is written into the strbuf "buf", overwriting
|
|
* any existing contents. A pointer to buf->buf is returned as a convenience.
|
|
*
|
|
* Example: odb_pack_name(out, sha1, "idx") => ".git/objects/pack/pack-1234..idx"
|
|
*/
|
|
extern char *odb_pack_name(struct strbuf *buf, const unsigned char *sha1, const char *ext);
|
|
|
|
/*
|
|
* Return the name of the (local) packfile with the specified sha1 in
|
|
* its name. The return value is a pointer to memory that is
|
|
* overwritten each time this function is called.
|
|
*/
|
|
extern char *sha1_pack_name(const unsigned char *sha1);
|
|
|
|
/*
|
|
* Return the name of the (local) pack index file with the specified
|
|
* sha1 in its name. The return value is a pointer to memory that is
|
|
* overwritten each time this function is called.
|
|
*/
|
|
extern char *sha1_pack_index_name(const unsigned char *sha1);
|
|
|
|
extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
|
|
|
|
/* A hook to report invalid files in pack directory */
|
|
#define PACKDIR_FILE_PACK 1
|
|
#define PACKDIR_FILE_IDX 2
|
|
#define PACKDIR_FILE_GARBAGE 4
|
|
extern void (*report_garbage)(unsigned seen_bits, const char *path);
|
|
|
|
extern void reprepare_packed_git(struct repository *r);
|
|
extern void install_packed_git(struct repository *r, struct packed_git *pack);
|
|
|
|
struct packed_git *get_packed_git(struct repository *r);
|
|
struct list_head *get_packed_git_mru(struct repository *r);
|
|
|
|
/*
|
|
* Give a rough count of objects in the repository. This sacrifices accuracy
|
|
* for speed.
|
|
*/
|
|
unsigned long approximate_object_count(void);
|
|
|
|
extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
|
|
struct packed_git *packs);
|
|
|
|
extern void pack_report(void);
|
|
|
|
/*
|
|
* mmap the index file for the specified packfile (if it is not
|
|
* already mmapped). Return 0 on success.
|
|
*/
|
|
extern int open_pack_index(struct packed_git *);
|
|
|
|
/*
|
|
* munmap the index file for the specified packfile (if it is
|
|
* currently mmapped).
|
|
*/
|
|
extern void close_pack_index(struct packed_git *);
|
|
|
|
extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned long *);
|
|
extern void close_pack_windows(struct packed_git *);
|
|
extern void close_pack(struct packed_git *);
|
|
extern void close_all_packs(struct raw_object_store *o);
|
|
extern void unuse_pack(struct pack_window **);
|
|
extern void clear_delta_base_cache(void);
|
|
extern struct packed_git *add_packed_git(const char *path, size_t path_len, int local);
|
|
|
|
/*
|
|
* Make sure that a pointer access into an mmap'd index file is within bounds,
|
|
* and can provide at least 8 bytes of data.
|
|
*
|
|
* Note that this is only necessary for variable-length segments of the file
|
|
* (like the 64-bit extended offset table), as we compare the size to the
|
|
* fixed-length parts when we open the file.
|
|
*/
|
|
extern void check_pack_index_ptr(const struct packed_git *p, const void *ptr);
|
|
|
|
/*
|
|
* Perform binary search on a pack-index for a given oid. Packfile is expected to
|
|
* have a valid pack-index.
|
|
*
|
|
* See 'bsearch_hash' for more information.
|
|
*/
|
|
int bsearch_pack(const struct object_id *oid, const struct packed_git *p, uint32_t *result);
|
|
|
|
/*
|
|
* Return the SHA-1 of the nth object within the specified packfile.
|
|
* Open the index if it is not already open. The return value points
|
|
* at the SHA-1 within the mmapped index. Return NULL if there is an
|
|
* error.
|
|
*/
|
|
extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t n);
|
|
/*
|
|
* Like nth_packed_object_sha1, but write the data into the object specified by
|
|
* the the first argument. Returns the first argument on success, and NULL on
|
|
* error.
|
|
*/
|
|
extern const struct object_id *nth_packed_object_oid(struct object_id *, struct packed_git *, uint32_t n);
|
|
|
|
/*
|
|
* Return the offset of the nth object within the specified packfile.
|
|
* The index must already be opened.
|
|
*/
|
|
extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t n);
|
|
|
|
/*
|
|
* If the object named sha1 is present in the specified packfile,
|
|
* return its offset within the packfile; otherwise, return 0.
|
|
*/
|
|
extern off_t find_pack_entry_one(const unsigned char *sha1, struct packed_git *);
|
|
|
|
extern int is_pack_valid(struct packed_git *);
|
|
extern void *unpack_entry(struct repository *r, struct packed_git *, off_t, enum object_type *, unsigned long *);
|
|
extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
|
|
extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
|
|
extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *);
|
|
|
|
extern void release_pack_memory(size_t);
|
|
|
|
/* global flag to enable extra checks when accessing packed objects */
|
|
extern int do_check_packed_object_crc;
|
|
|
|
extern int packed_object_info(struct repository *r,
|
|
struct packed_git *pack,
|
|
off_t offset, struct object_info *);
|
|
|
|
extern void mark_bad_packed_object(struct packed_git *p, const unsigned char *sha1);
|
|
extern const struct packed_git *has_packed_and_bad(const unsigned char *sha1);
|
|
|
|
/*
|
|
* Iff a pack file in the given repository contains the object named by sha1,
|
|
* return true and store its location to e.
|
|
*/
|
|
extern int find_pack_entry(struct repository *r, const unsigned char *sha1, struct pack_entry *e);
|
|
|
|
extern int has_sha1_pack(const unsigned char *sha1);
|
|
|
|
extern int has_pack_index(const unsigned char *sha1);
|
|
|
|
/*
|
|
* Only iterate over packs obtained from the promisor remote.
|
|
*/
|
|
#define FOR_EACH_OBJECT_PROMISOR_ONLY 2
|
|
|
|
/*
|
|
* Iterate over packed objects in both the local
|
|
* repository and any alternates repositories (unless the
|
|
* FOR_EACH_OBJECT_LOCAL_ONLY flag, defined in cache.h, is set).
|
|
*/
|
|
typedef int each_packed_object_fn(const struct object_id *oid,
|
|
struct packed_git *pack,
|
|
uint32_t pos,
|
|
void *data);
|
|
extern int for_each_object_in_pack(struct packed_git *p, each_packed_object_fn, void *data);
|
|
extern int for_each_packed_object(each_packed_object_fn, void *, unsigned flags);
|
|
|
|
/*
|
|
* Return 1 if an object in a promisor packfile is or refers to the given
|
|
* object, 0 otherwise.
|
|
*/
|
|
extern int is_promisor_object(const struct object_id *oid);
|
|
|
|
#endif
|