[PATCH] add inetd mode to git daemon

[Alexey Nezhdanov <snake@penza-gsm.ru>]

Adds --inetd command line argument that makes server run in inetd mode.

Signed-off-by: Alexey Nezhdanov <snake@penza-gsm.ru>
---

diff --git a/daemon.c b/daemon.c
--- a/daemon.c
+++ b/daemon.c
@@ -3,7 +3,7 @@
 #include <sys/socket.h>
 #include <netinet/in.h>
 
-static const char daemon_usage[] = "git-daemon [--port=n]";
+static const char daemon_usage[] = "git-daemon [--inetd | --port=n]";
 
 static int upload(char *dir, int dirlen)
 {
@@ -37,11 +37,21 @@ static int execute(char *line, int len)
 	return -1;
 }
 
-static void handle(int incoming, struct sockaddr_in *addr, int addrlen)
+static int handle_stdio()
 {
 	static char line[1000];
 	int len;
 
+	len = packet_read_line(0, line, sizeof(line));
+
+	if (len && line[len-1] == '\n')
+		line[--len] = 0;
+
+	return execute(line, len);
+}
+
+static void handle(int incoming, struct sockaddr_in *addr, int addrlen)
+{
 	if (fork()) {
 		close(incoming);
 		return;
@@ -50,12 +60,8 @@ static void handle(int incoming, struct 
 	dup2(incoming, 0);
 	dup2(incoming, 1);
 	close(incoming);
-	len = packet_read_line(0, line, sizeof(line));
-
-	if (len && line[len-1] == '\n')
-		line[--len] = 0;
 
-	exit(execute(line, len));
+	exit(handle_stdio());
 }
 
 static int serve(int port)
@@ -97,6 +103,7 @@ int main(int argc, char **argv)
 {
 	int port = DEFAULT_GIT_PORT;
 	int i;
+	int inetd_mode = 0;
 
 	for (i = 1; i < argc; i++) {
 		char *arg = argv[i];
@@ -110,8 +117,17 @@ int main(int argc, char **argv)
 				continue;
 			}
 		}
+
+		if (!strncmp(arg, "--inetd", 7)) {
+			inetd_mode = 1;
+			continue;
+		}
+
 		usage(daemon_usage);
 	}
 
-	return serve(port);
+	if (inetd_mode)
+		return handle_stdio();
+	else
+		return serve(port);
 }