From 0b591f452e62032fe9f70610b1a671d620e5d724 Mon Sep 17 00:00:00 2001
From: Michael Meffie <mmeffie@sinenomine.net>
Date: Thu, 4 Nov 2010 09:26:25 -0400
Subject: [PATCH] avoid private stdio fields in waitkey

Use the stdio_ext functions provided by solaris and glibc
instead of directly accessing private stdio FILE structure
members. This is needed for 64-bit solaris builds and is more
portable in general since the FILE structure is meant to be
opaque.

This is a backport of commit aac929badb5e40a59ae77ae69fc43df8f6f376fc,
without the changes to remove duplicate code.

Reviewed-on: http://gerrit.openafs.org/3257
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: Jeffrey Altman <jaltman@openafs.org>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>
(cherry picked from commit aac929badb5e40a59ae77ae69fc43df8f6f376fc)

Change-Id: I2953fe9d27edb30365266b1f4372e5fd18baf06e
Reviewed-on: http://gerrit.openafs.org/9604
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>
---
 acinclude.m4      | 1 +
 src/butc/lwps.c   | 6 ++++++
 src/lwp/waitkey.c | 8 ++++++++
 3 files changed, 15 insertions(+)

diff --git a/acinclude.m4 b/acinclude.m4
index 141006618..a2209043f 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -1318,6 +1318,7 @@ AC_CHECK_HEADERS([ \
 	search.h \
 	security/pam_modules.h \
 	signal.h \
+	stdio_ext.h \
 	stdlib.h \
 	string.h \
 	strings.h \
diff --git a/src/butc/lwps.c b/src/butc/lwps.c
index 337849bbc..377a77fab 100644
--- a/src/butc/lwps.c
+++ b/src/butc/lwps.c
@@ -24,6 +24,9 @@
 #ifdef HAVE_STDINT_H
 # include <stdint.h>
 #endif
+#ifdef HAVE_STDIO_EXT_H
+#include <stdio_ext.h>
+#endif
 
 #include <afs/procmgmt.h>
 #include <rx/xdr.h>
@@ -387,6 +390,9 @@ WaitForKeystroke(int seconds)
 #ifdef AFS_LINUX20_ENV
     if (stdin->_IO_read_ptr < stdin->_IO_read_end)
 	return 1;
+#elif defined(HAVE_STDIO_EXT_H)
+    if (__fbufsize(stdin) > 0)
+	return 1;
 #else
     if (stdin->_cnt > 0)
 	return 1;
diff --git a/src/lwp/waitkey.c b/src/lwp/waitkey.c
index 98e93bcbb..a84546da0 100644
--- a/src/lwp/waitkey.c
+++ b/src/lwp/waitkey.c
@@ -24,6 +24,9 @@
 
 
 #include <stdio.h>
+#ifdef HAVE_STDIO_EXT_H
+#include <stdio_ext.h>
+#endif
 #include <sys/types.h>
 #ifdef AFS_NT40_ENV
 #include <time.h>
@@ -181,8 +184,13 @@ LWP_WaitForKeystroke(int seconds)
 	return 1;
 #endif
 #else
+#if defined(HAVE_STDIO_EXT_H)
+    if (__fbufsize(stdin) > 0)
+	return 1;
+#else /* HAVE_STDIO_EXT_H */
     if (stdin->_cnt > 0)
 	return 1;
+#endif /* HAVE_STDIO_EXT_H */
 #endif
 #endif
 
-- 
2.39.5