diff --git a/ChangeLog b/ChangeLog
index 36aeb85bb..d1d45db79 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -29,6 +29,10 @@
      [readconf.h scp.1 sftp.1 ssh.1 ssh.c ssh_config.5]
      implement session multiplexing in the client (the server has supported 
      this since 2.0); ok markus@
+   - djm@cvs.openbsd.org 2004/06/14 01:44:39
+     [channels.c clientloop.c misc.c misc.h packet.c ssh-agent.c ssh-keyscan.c]
+     [sshd.c]
+     set_nonblock() instead of fnctl(...,O_NONBLOCK); "looks sane" deraadt@
 
 20040603
  - (dtucker) [auth-pam.c] Don't use pam_* namespace for sshd's PAM functions.
@@ -1213,4 +1217,4 @@
    - (djm) Trim deprecated options from INSTALL. Mention UsePAM
    - (djm) Fix quote handling in sftp; Patch from admorten AT umich.edu
 
-$Id: ChangeLog,v 1.3382 2004/06/15 00:34:08 djm Exp $
+$Id: ChangeLog,v 1.3383 2004/06/15 00:35:30 djm Exp $
diff --git a/channels.c b/channels.c
index 1fb1092c8..97c1fd31b 100644
--- a/channels.c
+++ b/channels.c
@@ -39,7 +39,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: channels.c,v 1.204 2004/06/13 15:03:02 djm Exp $");
+RCSID("$OpenBSD: channels.c,v 1.205 2004/06/14 01:44:38 djm Exp $");
 
 #include "ssh.h"
 #include "ssh1.h"
@@ -2509,8 +2509,8 @@ connect_to(const char *host, u_short port)
 				verbose("socket: %.100s", strerror(errno));
 			continue;
 		}
-		if (fcntl(sock, F_SETFL, O_NONBLOCK) < 0)
-			fatal("connect_to: F_SETFL: %s", strerror(errno));
+		if (set_nonblock(sock) == -1)
+			fatal("%s: set_nonblock(%d)", __func__, sock);
 		if (connect(sock, ai->ai_addr, ai->ai_addrlen) < 0 &&
 		    errno != EINPROGRESS) {
 			error("connect_to %.100s port %s: %.100s", ntop, strport,
diff --git a/clientloop.c b/clientloop.c
index 6401588a9..eada56033 100644
--- a/clientloop.c
+++ b/clientloop.c
@@ -59,7 +59,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: clientloop.c,v 1.123 2004/06/13 15:03:02 djm Exp $");
+RCSID("$OpenBSD: clientloop.c,v 1.124 2004/06/14 01:44:38 djm Exp $");
 
 #include "ssh.h"
 #include "ssh1.h"
@@ -167,7 +167,7 @@ static void
 enter_non_blocking(void)
 {
 	in_non_blocking_mode = 1;
-	(void) fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);
+	set_nonblock(fileno(stdin));
 }
 
 /*
diff --git a/misc.c b/misc.c
index 1f320353e..1c43bc007 100644
--- a/misc.c
+++ b/misc.c
@@ -23,7 +23,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: misc.c,v 1.23 2003/10/28 09:08:06 markus Exp $");
+RCSID("$OpenBSD: misc.c,v 1.24 2004/06/14 01:44:39 djm Exp $");
 
 #include "misc.h"
 #include "log.h"
@@ -46,7 +46,7 @@ chop(char *s)
 }
 
 /* set/unset filedescriptor to non-blocking */
-void
+int
 set_nonblock(int fd)
 {
 	int val;
@@ -54,20 +54,23 @@ set_nonblock(int fd)
 	val = fcntl(fd, F_GETFL, 0);
 	if (val < 0) {
 		error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
-		return;
+		return (-1);
 	}
 	if (val & O_NONBLOCK) {
-		debug2("fd %d is O_NONBLOCK", fd);
-		return;
+		debug3("fd %d is O_NONBLOCK", fd);
+		return (0);
 	}
 	debug2("fd %d setting O_NONBLOCK", fd);
 	val |= O_NONBLOCK;
-	if (fcntl(fd, F_SETFL, val) == -1)
-		debug("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
-		    fd, strerror(errno));
+	if (fcntl(fd, F_SETFL, val) == -1) {
+		debug("fcntl(%d, F_SETFL, O_NONBLOCK): %s", fd,
+		    strerror(errno));
+		return (-1);
+	}
+	return (0);
 }
 
-void
+int
 unset_nonblock(int fd)
 {
 	int val;
@@ -75,17 +78,20 @@ unset_nonblock(int fd)
 	val = fcntl(fd, F_GETFL, 0);
 	if (val < 0) {
 		error("fcntl(%d, F_GETFL, 0): %s", fd, strerror(errno));
-		return;
+		return (-1);
 	}
 	if (!(val & O_NONBLOCK)) {
-		debug2("fd %d is not O_NONBLOCK", fd);
-		return;
+		debug3("fd %d is not O_NONBLOCK", fd);
+		return (0);
 	}
 	debug("fd %d clearing O_NONBLOCK", fd);
 	val &= ~O_NONBLOCK;
-	if (fcntl(fd, F_SETFL, val) == -1)
-		debug("fcntl(%d, F_SETFL, O_NONBLOCK): %s",
+	if (fcntl(fd, F_SETFL, val) == -1) {
+		debug("fcntl(%d, F_SETFL, ~O_NONBLOCK): %s",
 		    fd, strerror(errno));
+		return (-1);
+	}
+	return (0);
 }
 
 /* disable nagle on socket */
diff --git a/misc.h b/misc.h
index d4a23cba3..6a4eff136 100644
--- a/misc.h
+++ b/misc.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: misc.h,v 1.14 2004/05/08 00:21:31 djm Exp $	*/
+/*	$OpenBSD: misc.h,v 1.15 2004/06/14 01:44:39 djm Exp $	*/
 
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
@@ -16,8 +16,8 @@
 
 char	*chop(char *);
 char	*strdelim(char **);
-void	 set_nonblock(int);
-void	 unset_nonblock(int);
+int	 set_nonblock(int);
+int	 unset_nonblock(int);
 void	 set_nodelay(int);
 int	 a2port(const char *);
 char	*cleanhostname(char *);
diff --git a/packet.c b/packet.c
index fe3eea094..fca0075e7 100644
--- a/packet.c
+++ b/packet.c
@@ -37,7 +37,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: packet.c,v 1.113 2004/05/11 19:01:43 deraadt Exp $");
+RCSID("$OpenBSD: packet.c,v 1.114 2004/06/14 01:44:39 djm Exp $");
 
 #include "openbsd-compat/sys-queue.h"
 
@@ -319,13 +319,10 @@ void
 packet_set_nonblocking(void)
 {
 	/* Set the socket into non-blocking mode. */
-	if (fcntl(connection_in, F_SETFL, O_NONBLOCK) < 0)
-		error("fcntl O_NONBLOCK: %.100s", strerror(errno));
+	set_nonblock(connection_in);
 
-	if (connection_out != connection_in) {
-		if (fcntl(connection_out, F_SETFL, O_NONBLOCK) < 0)
-			error("fcntl O_NONBLOCK: %.100s", strerror(errno));
-	}
+	if (connection_out != connection_in)
+		set_nonblock(connection_out);
 }
 
 /* Returns the socket used for reading. */
diff --git a/ssh-agent.c b/ssh-agent.c
index a38322160..ea84f2196 100644
--- a/ssh-agent.c
+++ b/ssh-agent.c
@@ -35,7 +35,7 @@
 
 #include "includes.h"
 #include "openbsd-compat/sys-queue.h"
-RCSID("$OpenBSD: ssh-agent.c,v 1.118 2004/05/08 00:21:31 djm Exp $");
+RCSID("$OpenBSD: ssh-agent.c,v 1.119 2004/06/14 01:44:39 djm Exp $");
 
 #include <openssl/evp.h>
 #include <openssl/md5.h>
@@ -789,8 +789,7 @@ new_socket(sock_type type, int fd)
 {
 	u_int i, old_alloc, new_alloc;
 
-	if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0)
-		error("fcntl O_NONBLOCK: %s", strerror(errno));
+	set_nonblock(fd);
 
 	if (fd > max_fd)
 		max_fd = fd;
diff --git a/ssh-keyscan.c b/ssh-keyscan.c
index c4a2414b1..01615b5c3 100644
--- a/ssh-keyscan.c
+++ b/ssh-keyscan.c
@@ -7,7 +7,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: ssh-keyscan.c,v 1.48 2004/06/13 12:53:24 djm Exp $");
+RCSID("$OpenBSD: ssh-keyscan.c,v 1.49 2004/06/14 01:44:39 djm Exp $");
 
 #include "openbsd-compat/sys-queue.h"
 
@@ -397,8 +397,8 @@ tcpconnect(char *host)
 			error("socket: %s", strerror(errno));
 			continue;
 		}
-		if (fcntl(s, F_SETFL, O_NONBLOCK) < 0)
-			fatal("F_SETFL: %s", strerror(errno));
+		if (set_nonblock(s) == -1)
+			fatal("%s: set_nonblock(%d)", __func__, s);
 		if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0 &&
 		    errno != EINPROGRESS)
 			error("connect (`%s'): %s", host, strerror(errno));
diff --git a/sshd.c b/sshd.c
index 5f3878119..34379172f 100644
--- a/sshd.c
+++ b/sshd.c
@@ -42,7 +42,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: sshd.c,v 1.292 2004/06/13 12:53:24 djm Exp $");
+RCSID("$OpenBSD: sshd.c,v 1.293 2004/06/14 01:44:39 djm Exp $");
 
 #include <openssl/dh.h>
 #include <openssl/bn.h>
@@ -1140,8 +1140,7 @@ main(int ac, char **av)
 				verbose("socket: %.100s", strerror(errno));
 				continue;
 			}
-			if (fcntl(listen_sock, F_SETFL, O_NONBLOCK) < 0) {
-				error("listen_sock O_NONBLOCK: %s", strerror(errno));
+			if (set_nonblock(listen_sock) == -1) {
 				close(listen_sock);
 				continue;
 			}
@@ -1284,8 +1283,7 @@ main(int ac, char **av)
 						error("accept: %.100s", strerror(errno));
 					continue;
 				}
-				if (fcntl(newsock, F_SETFL, 0) < 0) {
-					error("newsock del O_NONBLOCK: %s", strerror(errno));
+				if (unset_nonblock(newsock) == -1) {
 					close(newsock);
 					continue;
 				}