work around write() returning ENOENT on Solaris 2.7

ChangeLog

+2005-12-08  "Mazin, Malvina" <Malvina.Mazin@kla-tencor.com>
+	* configure.ac, libvncserver/sockets.c: on Solaris 2.7, write may
+	  return ENOENT when it really means EAGAIN.
+
 2005-12-07  Giampiero Giancipoli <giampiero.giancipoli@fredreggiane.com>
 	* libvncclient/vncviewer.c: plug memory leaks
 

configure.ac

@@ -360,6 +360,14 @@ AM_CONDITIONAL(LINUX, test -c /dev/vcsa1)
 AC_CHECK_HEADER(ApplicationServices/ApplicationServices.h, HAVE_OSX="true")
 AM_CONDITIONAL(OSX, test "$HAVE_OSX" = "true")
 
+# On Solaris 2.7, write() returns ENOENT when it really means EAGAIN
+AH_TEMPLATE(ENOENT_WORKAROUND, [work around when write() returns ENOENT but does not mean it])
+case `(uname -sr) 2>/dev/null` in
+    "SunOS 5.7")
+	AC_DEFINE(ENOENT_WORKAROUND)
+    ;;
+esac
+
 # Check for rpm SOURCES path
 printf "checking for rpm sources path... "
 RPMSOURCEDIR="NOT-FOUND"

libvncclient/sockets.c

@@ -217,7 +217,11 @@ WriteToRFBServer(rfbClient* client, char *buf, int n)
     j = write(client->sock, buf + i, (n - i));
     if (j <= 0) {
       if (j < 0) {
-	if (errno == EWOULDBLOCK || errno == EAGAIN) {
+	if (errno == EWOULDBLOCK ||
+#ifdef LIBVNCSERVER_ENOENT_WORKAROUND
+		errno == ENOENT ||
+#endif
+		errno == EAGAIN) {
 	  FD_ZERO(&fds);
 	  FD_SET(client->sock,&fds);
 

libvncserver/sockets.c

@@ -447,6 +447,9 @@ rfbReadExactTimeout(rfbClientPtr cl, char* buf, int len, int timeout)
 	    if (errno == EINTR)
 		continue;
 
+#ifdef LIBVNCSERVER_ENOENT_WORKAROUND
+	    if (errno != ENOENT)
+#endif
             if (errno != EWOULDBLOCK && errno != EAGAIN) {
                 return n;
             }