[configure.ac.orig monitor_fdpass.c] Enahnce msghdr tests to address

build problem on Irix reported by Dave Love <d.love@dl.ac.uk>. Back out
last monitor_fdpass.c changes that are no longer needed with new tests.
Patch tested on Irix by Jan-Frode Myklebust <janfrode@parallab.uib.no>

ChangeLog

@@ -1,3 +1,9 @@
+20020527
+ - (tim) [configure.ac.orig monitor_fdpass.c] Enahnce msghdr tests to address
+   build problem on Irix reported by Dave Love <d.love@dl.ac.uk>. Back out
+   last monitor_fdpass.c changes that are no longer needed with new tests.
+   Patch tested on Irix by Jan-Frode Myklebust <janfrode@parallab.uib.no>
+
 20020522
  - (djm) Fix spelling mistakes, spotted by Solar Designer i
    <solar@openwall.com>
@@ -671,4 +677,4 @@
  - (stevesk) entropy.c: typo in debug message
  - (djm) ssh-keygen -i needs seeded RNG; report from markus@
 
-$Id: ChangeLog,v 1.2141 2002/05/22 04:24:01 djm Exp $
+$Id: ChangeLog,v 1.2142 2002/05/28 00:37:32 tim Exp $

configure.ac

@@ -1,4 +1,4 @@
-# $Id: configure.ac,v 1.63 2002/05/22 01:02:15 djm Exp $
+# $Id: configure.ac,v 1.64 2002/05/28 00:37:33 tim Exp $
 
 AC_INIT
 AC_CONFIG_SRCDIR([ssh.c])
@@ -1499,15 +1499,23 @@ if test "x$ac_cv_have_pw_change_in_struct_passwd" = "xyes" ; then
 	AC_DEFINE(HAVE_PW_CHANGE_IN_PASSWD)
 fi
 
+dnl make sure we're using the real structure members and not defines
 AC_CACHE_CHECK([for msg_accrights field in struct msghdr],
 		ac_cv_have_accrights_in_msghdr, [
-	AC_TRY_COMPILE(
+	AC_TRY_RUN(
 		[
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/uio.h>
+int main() {
+#ifdef msg_accrights
+exit(1);
+#endif
+struct msghdr m;
+m.msg_accrights = 0;
+exit(0);
+}
 		],
-		[ struct msghdr m; m.msg_accrights = 0; ],
 		[ ac_cv_have_accrights_in_msghdr="yes" ],
 		[ ac_cv_have_accrights_in_msghdr="no" ]
 	)
@@ -1518,13 +1526,20 @@ fi
 
 AC_CACHE_CHECK([for msg_control field in struct msghdr],
 		ac_cv_have_control_in_msghdr, [
-	AC_TRY_COMPILE(
+	AC_TRY_RUN(
 		[
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/uio.h>
+int main() {
+#ifdef msg_control
+exit(1);
+#endif
+struct msghdr m;
+m.msg_control = 0;
+exit(0);
+}
 		],
-		[ struct msghdr m; m.msg_control = 0; ],
 		[ ac_cv_have_control_in_msghdr="yes" ],
 		[ ac_cv_have_control_in_msghdr="no" ]
 	)

monitor_fdpass.c

@@ -39,14 +39,13 @@ mm_send_fd(int socket, int fd)
 	struct iovec vec;
 	char ch = '\0';
 	int n;
-#if !defined(HAVE_ACCRIGHTS_IN_MSGHDR) || \
-	(defined(HAVE_ACCRIGHTS_IN_MSGHDR) && defined(HAVE_CONTROL_IN_MSGHDR))
+#ifndef HAVE_ACCRIGHTS_IN_MSGHDR
 	char tmp[CMSG_SPACE(sizeof(int))];
 	struct cmsghdr *cmsg;
 #endif
 
 	memset(&msg, 0, sizeof(msg));
-#if defined(HAVE_ACCRIGHTS_IN_MSGHDR) && !defined(HAVE_CONTROL_IN_MSGHDR)
+#ifdef HAVE_ACCRIGHTS_IN_MSGHDR
 	msg.msg_accrights = (caddr_t)&fd;
 	msg.msg_accrightslen = sizeof(fd);
 #else
@@ -84,8 +83,7 @@ mm_receive_fd(int socket)
 	struct iovec vec;
 	char ch;
 	int fd, n;
-#if !defined(HAVE_ACCRIGHTS_IN_MSGHDR) || \
-	(defined(HAVE_ACCRIGHTS_IN_MSGHDR) && defined(HAVE_CONTROL_IN_MSGHDR))
+#ifndef HAVE_ACCRIGHTS_IN_MSGHDR
 	char tmp[CMSG_SPACE(sizeof(int))];
 	struct cmsghdr *cmsg;
 #endif
@@ -95,7 +93,7 @@ mm_receive_fd(int socket)
 	vec.iov_len = 1;
 	msg.msg_iov = &vec;
 	msg.msg_iovlen = 1;
-#if defined(HAVE_ACCRIGHTS_IN_MSGHDR) && !defined(HAVE_CONTROL_IN_MSGHDR)
+#ifdef HAVE_ACCRIGHTS_IN_MSGHDR
 	msg.msg_accrights = (caddr_t)&fd;
 	msg.msg_accrightslen = sizeof(fd);
 #else
@@ -109,7 +107,7 @@ mm_receive_fd(int socket)
 		fatal("%s: recvmsg: expected received 1 got %d",
 		    __FUNCTION__, n);
 
-#if defined(HAVE_ACCRIGHTS_IN_MSGHDR) && !defined(HAVE_CONTROL_IN_MSGHDR)
+#ifdef HAVE_ACCRIGHTS_IN_MSGHDR
 	if (msg.msg_accrightslen != sizeof(fd))
 		fatal("%s: no fd", __FUNCTION__);
 #else