git-push through git protocol

This allows pushing over the git:// protocol, and while it's not
authenticated, it could make sense from within a firewalled
setup where nobody but trusted internal people can reach the git
port.  git-daemon is possibly easier and faster to set up in the
kind of situation where you set up git instead of CVS inside a
company.

"git-receive-pack" is disabled by default, so you need to enable it
explicitly by starting git-daemon with the "--enable=receive-pack"
command line argument, or by having your config enable it automatically.
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
Signed-off-by: NJunio C Hamano <junkio@cox.net>

daemon.c

@@ -372,9 +372,16 @@ static int upload_archive(void)
 	return -1;
 }
 
+static int receive_pack(void)
+{
+	execl_git_cmd("receive-pack", ".", NULL);
+	return -1;
+}
+
 static struct daemon_service daemon_service[] = {
 	{ "upload-archive", "uploadarch", upload_archive, 0, 1 },
 	{ "upload-pack", "uploadpack", upload_pack, 1, 1 },
+	{ "receive-pack", "receivepack", receive_pack, 0, 1 },
 };
 
 static void enable_service(const char *name, int ena) {