--- vfs.c.orig	2013-07-17 19:56:28.243919876 -0700
+++ vfs.c	2013-07-17 19:57:58.805916306 -0700
@@ -436,6 +436,9 @@
 		req->unread_bytes = 0;
 		/* Ensure the socket is blocking. */
 		old_flags = fcntl(sockfd, F_GETFL, 0);
+		if (old_flags == -1) {
+			return (ssize_t)-1;
+		}
 		if (set_blocking(sockfd, true) == -1) {
 			return (ssize_t)-1;
 		}
@@ -480,6 +483,9 @@
 		req->unread_bytes = 0;
 		/* Ensure the socket is blocking. */
 		old_flags = fcntl(sockfd, F_GETFL, 0);
+		if (old_flags == -1) {
+			return (ssize_t)-1;
+		}
 		if (set_blocking(sockfd, true) == -1) {
 			return (ssize_t)-1;
 		}