1 files changed, 149 insertions, 0 deletions
diff --git a/src/libgit2/odb.h b/src/libgit2/odb.h
new file mode 100644
index 000000000..5aa4cc84a
--- /dev/null
+++ b/src/libgit2/odb.h
@@ -0,0 +1,149 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_odb_h__
+#define INCLUDE_odb_h__
+
+#include "common.h"
+
+#include "git2/odb.h"
+#include "git2/oid.h"
+#include "git2/types.h"
+#include "git2/sys/commit_graph.h"
+
+#include "cache.h"
+#include "commit_graph.h"
+#include "filter.h"
+#include "posix.h"
+#include "vector.h"
+
+#define GIT_OBJECTS_DIR "objects/"
+#define GIT_OBJECT_DIR_MODE 0777
+#define GIT_OBJECT_FILE_MODE 0444
+
+#define GIT_ODB_DEFAULT_LOOSE_PRIORITY 1
+#define GIT_ODB_DEFAULT_PACKED_PRIORITY 2
+
+extern bool git_odb__strict_hash_verification;
+
+/* DO NOT EXPORT */
+typedef struct {
+	void *data;			/**< Raw, decompressed object data. */
+	size_t len;			/**< Total number of bytes in data. */
+	git_object_t type;		/**< Type of this object. */
+} git_rawobj;
+
+/* EXPORT */
+struct git_odb_object {
+	git_cached_obj cached;
+	void *buffer;
+};
+
+/* EXPORT */
+struct git_odb {
+	git_refcount rc;
+	git_mutex lock;  /* protects backends */
+	git_vector backends;
+	git_cache own_cache;
+	git_commit_graph *cgraph;
+	unsigned int do_fsync :1;
+};
+
+typedef enum {
+	GIT_ODB_CAP_FROM_OWNER = -1
+} git_odb_cap_t;
+
+/*
+ * Set the capabilities for the object database.
+ */
+int git_odb__set_caps(git_odb *odb, int caps);
+
+/*
+ * Add the default loose and packed backends for a database.
+ */
+int git_odb__add_default_backends(
+	git_odb *db, const char *objects_dir,
+	bool as_alternates, int alternate_depth);
+
+/*
+ * Hash a git_rawobj internally.
+ * The `git_rawobj` is supposed to be previously initialized
+ */
+int git_odb__hashobj(git_oid *id, git_rawobj *obj);
+
+/*
+ * Format the object header such as it would appear in the on-disk object
+ */
+int git_odb__format_object_header(size_t *out_len, char *hdr, size_t hdr_size, git_object_size_t obj_len, git_object_t obj_type);
+
+/*
+ * Hash an open file descriptor.
+ * This is a performance call when the contents of a fd need to be hashed,
+ * but the fd is already open and we have the size of the contents.
+ *
+ * Saves us some `stat` calls.
+ *
+ * The fd is never closed, not even on error. It must be opened and closed
+ * by the caller
+ */
+int git_odb__hashfd(git_oid *out, git_file fd, size_t size, git_object_t type);
+
+/*
+ * Hash an open file descriptor applying an array of filters
+ * Acts just like git_odb__hashfd with the addition of filters...
+ */
+int git_odb__hashfd_filtered(
+	git_oid *out, git_file fd, size_t len, git_object_t type, git_filter_list *fl);
+
+/*
+ * Hash a `path`, assuming it could be a POSIX symlink: if the path is a
+ * symlink, then the raw contents of the symlink will be hashed. Otherwise,
+ * this will fallback to `git_odb__hashfd`.
+ *
+ * The hash type for this call is always `GIT_OBJECT_BLOB` because
+ * symlinks may only point to blobs.
+ */
+int git_odb__hashlink(git_oid *out, const char *path);
+
+/**
+ * Generate a GIT_EMISMATCH error for the ODB.
+ */
+int git_odb__error_mismatch(
+	const git_oid *expected, const git_oid *actual);
+
+/*
+ * Generate a GIT_ENOTFOUND error for the ODB.
+ */
+int git_odb__error_notfound(
+	const char *message, const git_oid *oid, size_t oid_len);
+
+/*
+ * Generate a GIT_EAMBIGUOUS error for the ODB.
+ */
+int git_odb__error_ambiguous(const char *message);
+
+/*
+ * Attempt to read object header or just return whole object if it could
+ * not be read.
+ */
+int git_odb__read_header_or_object(
+	git_odb_object **out, size_t *len_p, git_object_t *type_p,
+	git_odb *db, const git_oid *id);
+
+/*
+ * Attempt to get the ODB's commit-graph file. This object is still owned by
+ * the ODB. If the repository does not contain a commit-graph, it will return
+ * GIT_ENOTFOUND.
+ */
+int git_odb__get_commit_graph_file(git_commit_graph_file **out, git_odb *odb);
+
+/* freshen an entry in the object database */
+int git_odb__freshen(git_odb *db, const git_oid *id);
+
+/* fully free the object; internal method, DO NOT EXPORT */
+void git_odb_object__free(void *object);
+
+#endif