From 27ffe564a769f15e4970da024e548003afc8eb07 Mon Sep 17 00:00:00 2001
From: leitner <leitner>
Date: Fri, 24 Oct 2003 18:57:46 +0000
Subject: [PATCH] set flag only if setting to non-blocking worked

---
 io/io_nonblock.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/io/io_nonblock.c b/io/io_nonblock.c
index 3866018..69e1cfb 100644
--- a/io/io_nonblock.c
+++ b/io/io_nonblock.c
@@ -5,6 +5,6 @@
 
 void io_nonblock(int64 d) {
   io_entry* e=array_get(&io_fds,sizeof(io_entry),d);
-  fcntl(d,F_SETFL,fcntl(d,F_GETFL,0) | O_NDELAY);
-  if (e) e->nonblock=1;
+  if (fcntl(d,F_SETFL,fcntl(d,F_GETFL,0) | O_NDELAY)==0)
+    if (e) e->nonblock=1;
 }