Merge solaris bugfix in from r4161

git-svn-id: http://www.varnish-cache.org/svn/branches/2.0@4162 d4fa192b-c00b-0410-8231-f00ffab90ce4

lib/libvarnish/tcp.c

@@ -56,6 +56,11 @@
 
 #include "libvarnish.h"
 
+/* Solaris can't use the ioctl" */
+#ifdef __sun
+#include <fcntl.h>
+#endif
+
 /*--------------------------------------------------------------------*/
 
 void
@@ -126,6 +131,9 @@ TCP_filter_http(int sock)
  * us to do two syscalls, one to get and one to set, the latter of
  * which mucks about a bit before it ends up calling ioctl(FIONBIO),
  * at least on FreeBSD.
+ *
+ * On some platforms we need to use fcntl because the ioctl is unreliable
+ * The one that we know this is the case for is solaris.
  */
 
 void
@@ -133,8 +141,13 @@ TCP_blocking(int sock)
 {
 	int i;
 
+#ifdef __sun
+	i = fcntl (sock, F_GETFL,0);
+	fcntl(sock, F_SETFL, i & ~O_NONBLOCK);
+#else
 	i = 0;
 	AZ(ioctl(sock, FIONBIO, &i));
+#endif
 }
 
 void
@@ -142,8 +155,13 @@ TCP_nonblocking(int sock)
 {
 	int i;
 
+#ifdef __sun
+	i = fcntl (sock, F_GETFL,0);
+	fcntl(sock, F_SETFL, i | O_NONBLOCK);
+#else
 	i = 1;
 	AZ(ioctl(sock, FIONBIO, &i));
+#endif
 }
 
 /*--------------------------------------------------------------------