X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=pack.h;h=694e0c56f0b67c1ae9b7a94a243aca7b8859e50c;hb=b63af9b340dd831840c70103c9f609940a910031;hp=08e120dca664f43f8c12a2ce59cb28a67315500a;hpb=fead2836a16829fba427635f92d7df9acf771a55;p=git.git

diff --git a/pack.h b/pack.h
index 08e120dc..694e0c56 100644
--- a/pack.h
+++ b/pack.h
@@ -1,23 +1,35 @@
 #ifndef PACK_H
 #define PACK_H
 
+/*
+ * The packed object type is stored in 3 bits.
+ * The type value 0 is a reserved prefix if ever there is more than 7
+ * object types, or any future format extensions.
+ */
 enum object_type {
-	OBJ_NONE,
-	OBJ_COMMIT,
-	OBJ_TREE,
-	OBJ_BLOB,
-	OBJ_TAG,
-	OBJ_DELTA,
+	OBJ_EXT = 0,
+	OBJ_COMMIT = 1,
+	OBJ_TREE = 2,
+	OBJ_BLOB = 3,
+	OBJ_TAG = 4,
+	/* 5/6 for future expansion */
+	OBJ_DELTA = 7,
 };
 
 /*
  * Packed object header
  */
 #define PACK_SIGNATURE 0x5041434b	/* "PACK" */
+#define PACK_VERSION 2
+#define pack_version_ok(v) ((v) == htonl(2) || (v) == htonl(3))
 struct pack_header {
 	unsigned int hdr_signature;
 	unsigned int hdr_version;
 	unsigned int hdr_entries;
 };
 
+extern int verify_pack(struct packed_git *, int);
+extern int check_reuse_pack_delta(struct packed_git *, unsigned long,
+				  unsigned char *, unsigned long *,
+				  enum object_type *);
 #endif