+static int serve_ref(int fd_in, int fd_out)
+{
+ char ref[PATH_MAX];
+ unsigned char sha1[20];
+ int posn = 0;
+ signed char remote = 0;
+ do {
+ if (read(fd_in, ref + posn, 1) < 1)
+ return -1;
+ posn++;
+ } while (ref[posn - 1]);
+
+ if (verbose)
+ fprintf(stderr, "Serving %s\n", ref);
+
+ if (get_ref_sha1(ref, sha1))
+ remote = -1;
+ write(fd_out, &remote, 1);
+ if (remote)
+ return 0;
+ write(fd_out, sha1, 20);
+ return 0;
+}
+
+
+static void service(int fd_in, int fd_out) {