From 71c58411d4e85d46c3033d9064750fe22d21a0a8 Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Fri, 14 Jan 2011 17:36:16 +0100
Subject: Describe cause of select() failure

---
 src/dirax.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/dirax.c b/src/dirax.c
index f811d394..aa748649 100644
--- a/src/dirax.c
+++ b/src/dirax.c
@@ -24,6 +24,7 @@
 #include <fcntl.h>
 #include <assert.h>
 #include <sys/ioctl.h>
+#include <errno.h>
 
 #if HAVE_FORKPTY_LINUX
 #include <pty.h>
@@ -497,7 +498,8 @@ void run_dirax(struct image *image)
 		sval = select(dirax->pty+1, &fds, NULL, NULL, &tv);
 
 		if ( sval == -1 ) {
-			ERROR("select() failed.\n");
+			int err = errno;
+			ERROR("select() failed: %s\n", strerror(err));
 			rval = 1;
 		} else if ( sval != 0 ) {
 			rval = dirax_readable(image, dirax);
-- 
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