*/
extern const char * const local_repo_env[];
-extern void setup_git_env(void);
+extern void setup_git_env(const char *git_dir);
/*
* Returns true iff we have a configured git repository (either via
/* For use with `write_locked_index()`. */
#define COMMIT_LOCK (1 << 0)
+#define SKIP_IF_UNCHANGED (1 << 1)
/*
* Write the index while holding an already-taken lock. Close the lock,
* With `COMMIT_LOCK`, the lock is always committed or rolled back.
* Without it, the lock is closed, but neither committed nor rolled
* back.
+ *
+ * If `SKIP_IF_UNCHANGED` is given and the index is unchanged, nothing
+ * is written (and the lock is rolled back if `COMMIT_LOCK` is given).
*/
extern int write_locked_index(struct index_state *, struct lock_file *lock, unsigned flags);
#define DATA_CHANGED 0x0020
#define TYPE_CHANGED 0x0040
-/*
- * Put in `buf` the name of the file in the local object database that
- * would be used to store a loose object with the specified sha1.
- */
-extern void sha1_file_name(struct strbuf *buf, const unsigned char *sha1);
-
/*
* Return an abbreviated sha1 unique within this repository's object database.
* The result will be at least `len` characters long, and will be NUL
*/
extern char *xdg_cache_home(const char *filename);
-extern void *read_sha1_file_extended(const unsigned char *sha1,
- enum object_type *type,
- unsigned long *size, int lookup_replace);
-static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
-{
- return read_sha1_file_extended(sha1, type, size, 1);
-}
-
-/*
- * This internal function is only declared here for the benefit of
- * lookup_replace_object(). Please do not call it directly.
- */
-extern const unsigned char *do_lookup_replace_object(const unsigned char *sha1);
-
-/*
- * If object sha1 should be replaced, return the replacement object's
- * name (replaced recursively, if necessary). The return value is
- * either sha1 or a pointer to a permanently-allocated value. When
- * object replacement is suppressed, always return sha1.
- */
-static inline const unsigned char *lookup_replace_object(const unsigned char *sha1)
-{
- if (!check_replace_refs)
- return sha1;
- return do_lookup_replace_object(sha1);
-}
-
-/* Read and unpack an object file into memory, write memory to an object file */
-extern int oid_object_info(const struct object_id *, unsigned long *);
-
-extern int hash_object_file(const void *buf, unsigned long len,
- const char *type, struct object_id *oid);
-
-extern int write_object_file(const void *buf, unsigned long len,
- const char *type, struct object_id *oid);
-
-extern int hash_object_file_literally(const void *buf, unsigned long len,
- const char *type, struct object_id *oid,
- unsigned flags);
-
-extern int pretend_object_file(void *, unsigned long, enum object_type,
- struct object_id *oid);
-
-extern int force_object_loose(const struct object_id *oid, time_t mtime);
-
extern int git_open_cloexec(const char *name, int flags);
#define git_open(name) git_open_cloexec(name, O_RDONLY)
-extern void *map_sha1_file(const unsigned char *sha1, unsigned long *size);
extern int unpack_sha1_header(git_zstream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz);
extern int parse_sha1_header(const char *hdr, unsigned long *sizep);
extern int finalize_object_file(const char *tmpfile, const char *filename);
-/*
- * Open the loose object at path, check its hash, and return the contents,
- * type, and size. If the object is a blob, then "contents" may return NULL,
- * to allow streaming of large blobs.
- *
- * Returns 0 on success, negative on error (details may be written to stderr).
- */
-int read_loose_object(const char *path,
- const struct object_id *expected_oid,
- enum object_type *type,
- unsigned long *size,
- void **contents);
-
-/*
- * Convenience for sha1_object_info_extended() with a NULL struct
- * object_info. OBJECT_INFO_SKIP_CACHED is automatically set; pass
- * nonzero flags to also set other flags.
- */
-extern int has_sha1_file_with_flags(const unsigned char *sha1, int flags);
-static inline int has_sha1_file(const unsigned char *sha1)
-{
- return has_sha1_file_with_flags(sha1, 0);
-}
-
-/* Same as the above, except for struct object_id. */
-extern int has_object_file(const struct object_id *oid);
-extern int has_object_file_with_flags(const struct object_id *oid, int flags);
-
-/*
- * Return true iff an alternate object database has a loose object
- * with the specified name. This function does not respect replace
- * references.
- */
-extern int has_loose_object_nonlocal(const unsigned char *sha1);
-
-extern void assert_oid_type(const struct object_id *oid, enum object_type expect);
-
/* Helper to check and "touch" a file */
extern int check_and_freshen_file(const char *fn, int freshen);
extern void schedule_dir_for_removal(const char *name, int len);
extern void remove_scheduled_dirs(void);
-extern struct alternate_object_database {
- struct alternate_object_database *next;
-
- /* see alt_scratch_buf() */
- struct strbuf scratch;
- size_t base_len;
-
- /*
- * Used to store the results of readdir(3) calls when searching
- * for unique abbreviated hashes. This cache is never
- * invalidated, thus it's racy and not necessarily accurate.
- * That's fine for its purpose; don't use it for tasks requiring
- * greater accuracy!
- */
- char loose_objects_subdir_seen[256];
- struct oid_array loose_objects_cache;
-
- char path[FLEX_ARRAY];
-} *alt_odb_list;
-extern void prepare_alt_odb(void);
-extern char *compute_alternate_path(const char *path, struct strbuf *err);
-typedef int alt_odb_fn(struct alternate_object_database *, void *);
-extern int foreach_alt_odb(alt_odb_fn, void*);
-
-/*
- * Allocate a "struct alternate_object_database" but do _not_ actually
- * add it to the list of alternates.
- */
-struct alternate_object_database *alloc_alt_odb(const char *dir);
-
-/*
- * Add the directory to the on-disk alternates file; the new entry will also
- * take effect in the current process.
- */
-extern void add_to_alternates_file(const char *dir);
-
-/*
- * Add the directory to the in-memory list of alternates (along with any
- * recursive alternates it points to), but do not modify the on-disk alternates
- * file.
- */
-extern void add_to_alternates_memory(const char *dir);
-
-/*
- * Returns a scratch strbuf pre-filled with the alternate object directory,
- * including a trailing slash, which can be used to access paths in the
- * alternate. Always use this over direct access to alt->scratch, as it
- * cleans up any previous use of the scratch buffer.
- */
-extern struct strbuf *alt_scratch_buf(struct alternate_object_database *alt);
-
struct pack_window {
struct pack_window *next;
unsigned char *base;
unsigned int inuse_cnt;
};
-extern struct packed_git {
- struct packed_git *next;
- struct list_head mru;
- struct pack_window *windows;
- off_t pack_size;
- const void *index_data;
- size_t index_size;
- uint32_t num_objects;
- uint32_t num_bad_objects;
- unsigned char *bad_object_sha1;
- int index_version;
- time_t mtime;
- int pack_fd;
- unsigned pack_local:1,
- pack_keep:1,
- freshened:1,
- do_not_close:1,
- pack_promisor:1;
- unsigned char sha1[20];
- struct revindex_entry *revindex;
- /* something like ".git/objects/pack/xxxxx.pack" */
- char pack_name[FLEX_ARRAY]; /* more */
-} *packed_git;
-
-/*
- * A most-recently-used ordered version of the packed_git list.
- */
-extern struct list_head packed_git_mru;
-
struct pack_entry {
off_t offset;
unsigned char sha1[20];
#define FOR_EACH_OBJECT_LOCAL_ONLY 0x1
extern int for_each_loose_object(each_loose_object_fn, void *, unsigned flags);
-struct object_info {
- /* Request */
- enum object_type *typep;
- unsigned long *sizep;
- off_t *disk_sizep;
- unsigned char *delta_base_sha1;
- struct strbuf *type_name;
- void **contentp;
-
- /* Response */
- enum {
- OI_CACHED,
- OI_LOOSE,
- OI_PACKED,
- OI_DBCACHED
- } whence;
- union {
- /*
- * struct {
- * ... Nothing to expose in this case
- * } cached;
- * struct {
- * ... Nothing to expose in this case
- * } loose;
- */
- struct {
- struct packed_git *pack;
- off_t offset;
- unsigned int is_delta;
- } packed;
- } u;
-};
-
-/*
- * Initializer for a "struct object_info" that wants no items. You may
- * also memset() the memory to all-zeroes.
- */
-#define OBJECT_INFO_INIT {NULL}
-
-/* Invoke lookup_replace_object() on the given hash */
-#define OBJECT_INFO_LOOKUP_REPLACE 1
-/* Allow reading from a loose object file of unknown/bogus type */
-#define OBJECT_INFO_ALLOW_UNKNOWN_TYPE 2
-/* Do not check cached storage */
-#define OBJECT_INFO_SKIP_CACHED 4
-/* Do not retry packed storage after checking packed and loose storage */
-#define OBJECT_INFO_QUICK 8
-extern int oid_object_info_extended(const struct object_id *, struct object_info *, unsigned flags);
-
/*
* Set this to 0 to prevent sha1_object_info_extended() from fetching missing
* blobs. This has a difference only if extensions.partialClone is set.
int decode_85(char *dst, const char *line, int linelen);
void encode_85(char *buf, const unsigned char *data, int bytes);
-/* alloc.c */
-extern void *alloc_blob_node(void);
-extern void *alloc_tree_node(void);
-extern void *alloc_commit_node(void);
-extern void *alloc_tag_node(void);
-extern void *alloc_object_node(void);
-extern void alloc_report(void);
-extern unsigned int alloc_commit_index(void);
-
/* pkt-line.c */
void packet_trace_identity(const char *prog);