#ifndef OBJECT_STORE_H
#define OBJECT_STORE_H
-extern struct alternate_object_database {
+#include "cache.h"
+#include "oidmap.h"
+#include "list.h"
+#include "sha1-array.h"
+#include "strbuf.h"
+
+struct alternate_object_database {
struct alternate_object_database *next;
/* see alt_scratch_buf() */
char loose_objects_subdir_seen[256];
struct oid_array loose_objects_cache;
+ /*
+ * Path to the alternative object store. If this is a relative path,
+ * it is relative to the current working directory.
+ */
char path[FLEX_ARRAY];
-} *alt_odb_list;
-void prepare_alt_odb(void);
+};
+void prepare_alt_odb(struct repository *r);
char *compute_alternate_path(const char *path, struct strbuf *err);
typedef int alt_odb_fn(struct alternate_object_database *, void *);
int foreach_alt_odb(alt_odb_fn, void*);
*/
struct strbuf *alt_scratch_buf(struct alternate_object_database *alt);
+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;
+ int index; /* for builtin/pack-objects.c */
+ unsigned pack_local:1,
+ pack_keep:1,
+ pack_keep_in_core: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 */
+};
+
struct raw_object_store {
/*
* Path to the repository's object store.
/* Path to extra alternate object database if not NULL */
char *alternate_db;
+
+ struct alternate_object_database *alt_odb_list;
+ struct alternate_object_database **alt_odb_tail;
+
+ /*
+ * Objects that should be substituted by other objects
+ * (see git-replace(1)).
+ */
+ struct oidmap *replace_map;
+
+ struct commit_graph *commit_graph;
+ unsigned commit_graph_attempted : 1; /* if loading has been attempted */
+
+ /*
+ * private data
+ *
+ * should only be accessed directly by packfile.c
+ */
+
+ struct packed_git *packed_git;
+ /* A most-recently-used ordered version of the packed_git list. */
+ struct list_head packed_git_mru;
+
+ /*
+ * A fast, rough count of the number of objects in the repository.
+ * These two fields are not meant for direct access. Use
+ * approximate_object_count() instead.
+ */
+ unsigned long approximate_object_count;
+ unsigned approximate_object_count_valid : 1;
+
+ /*
+ * Whether packed_git has already been populated with this repository's
+ * packs.
+ */
+ unsigned packed_git_initialized : 1;
};
struct raw_object_store *raw_object_store_new(void);
void raw_object_store_clear(struct raw_object_store *o);
+/*
+ * 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.
+ */
+void sha1_file_name(struct repository *r, struct strbuf *buf, const unsigned char *sha1);
+
+void *map_sha1_file(struct repository *r, const unsigned char *sha1, unsigned long *size);
+
+extern void *read_object_file_extended(const struct object_id *oid,
+ enum object_type *type,
+ unsigned long *size, int lookup_replace);
+static inline void *read_object_file(const struct object_id *oid, enum object_type *type, unsigned long *size)
+{
+ return read_object_file_extended(oid, type, size, 1);
+}
+
+/* Read and unpack an object file into memory, write memory to an object file */
+int oid_object_info(struct repository *r, 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);
+
+/*
+ * 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 struct object_id *);
+
+extern void assert_oid_type(const struct object_id *oid, enum object_type expect);
+
+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
+/* Do not check loose object */
+#define OBJECT_INFO_IGNORE_LOOSE 16
+
+int oid_object_info_extended(struct repository *r,
+ const struct object_id *,
+ struct object_info *, unsigned flags);
+
+/*
+ * Iterate over the files in the loose-object parts of the object
+ * directory "path", triggering the following callbacks:
+ *
+ * - loose_object is called for each loose object we find.
+ *
+ * - loose_cruft is called for any files that do not appear to be
+ * loose objects. Note that we only look in the loose object
+ * directories "objects/[0-9a-f]{2}/", so we will not report
+ * "objects/foobar" as cruft.
+ *
+ * - loose_subdir is called for each top-level hashed subdirectory
+ * of the object directory (e.g., "$OBJDIR/f0"). It is called
+ * after the objects in the directory are processed.
+ *
+ * Any callback that is NULL will be ignored. Callbacks returning non-zero
+ * will end the iteration.
+ *
+ * In the "buf" variant, "path" is a strbuf which will also be used as a
+ * scratch buffer, but restored to its original contents before
+ * the function returns.
+ */
+typedef int each_loose_object_fn(const struct object_id *oid,
+ const char *path,
+ void *data);
+typedef int each_loose_cruft_fn(const char *basename,
+ const char *path,
+ void *data);
+typedef int each_loose_subdir_fn(unsigned int nr,
+ const char *path,
+ void *data);
+int for_each_file_in_obj_subdir(unsigned int subdir_nr,
+ struct strbuf *path,
+ each_loose_object_fn obj_cb,
+ each_loose_cruft_fn cruft_cb,
+ each_loose_subdir_fn subdir_cb,
+ void *data);
+int for_each_loose_file_in_objdir(const char *path,
+ each_loose_object_fn obj_cb,
+ each_loose_cruft_fn cruft_cb,
+ each_loose_subdir_fn subdir_cb,
+ void *data);
+int for_each_loose_file_in_objdir_buf(struct strbuf *path,
+ each_loose_object_fn obj_cb,
+ each_loose_cruft_fn cruft_cb,
+ each_loose_subdir_fn subdir_cb,
+ void *data);
+
+/* Flags for for_each_*_object() below. */
+enum for_each_object_flags {
+ /* Iterate only over local objects, not alternates. */
+ FOR_EACH_OBJECT_LOCAL_ONLY = (1<<0),
+
+ /* Only iterate over packs obtained from the promisor remote. */
+ FOR_EACH_OBJECT_PROMISOR_ONLY = (1<<1),
+
+ /*
+ * Visit objects within a pack in packfile order rather than .idx order
+ */
+ FOR_EACH_OBJECT_PACK_ORDER = (1<<2),
+};
+
+/*
+ * Iterate over all accessible loose objects without respect to
+ * reachability. By default, this includes both local and alternate objects.
+ * The order in which objects are visited is unspecified.
+ *
+ * Any flags specific to packs are ignored.
+ */
+int for_each_loose_object(each_loose_object_fn, void *,
+ enum for_each_object_flags flags);
+
+/*
+ * Iterate over all accessible packed objects without respect to reachability.
+ * By default, this includes both local and alternate packs.
+ *
+ * Note that some objects may appear twice if they are found in multiple packs.
+ * Each pack is visited in an unspecified order. By default, objects within a
+ * pack are visited in pack-idx order (i.e., sorted by oid).
+ */
+typedef int each_packed_object_fn(const struct object_id *oid,
+ struct packed_git *pack,
+ uint32_t pos,
+ void *data);
+int for_each_object_in_pack(struct packed_git *p,
+ each_packed_object_fn, void *data,
+ enum for_each_object_flags flags);
+int for_each_packed_object(each_packed_object_fn, void *,
+ enum for_each_object_flags flags);
+
#endif /* OBJECT_STORE_H */