From 95b9ecf9958becff4c5bad2dfb59a37cb9bb6f05 Mon Sep 17 00:00:00 2001
From: Erik van der Kouwe <erik@minix3.org>
Date: Thu, 2 Jul 2015 19:01:58 +0200
Subject: [PATCH] test48: Introduce USENETWORK variable.

This patch introduces USENETWORK environment variable to determine whether to
use the network or not, instead of the unreliable ping test; set to 'yes' to
enable network usage.

Change-Id: I9e26fa95b5b990fd94f5978db8de0dd73496d314
---
 minix/tests/run      |  1 +
 minix/tests/test48.c | 21 ++++++++++-----------
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/minix/tests/run b/minix/tests/run
index d46a3c3c5..7bc938aa2 100755
--- a/minix/tests/run
+++ b/minix/tests/run
@@ -16,6 +16,7 @@ failed=`expr 0`			# count number of tests that failed
 skipped=`expr 0`		# count number of tests that were skipped
 total=`expr 0`			# total number of tests tried
 badones=			# list of tests that failed
+export USENETWORK		# set to "yes" for test48 to use the network
 
 # In the lists below, shell scripts should be listed without ".sh" suffix
 
diff --git a/minix/tests/test48.c b/minix/tests/test48.c
index 7f994898c..697bd9459 100644
--- a/minix/tests/test48.c
+++ b/minix/tests/test48.c
@@ -577,17 +577,18 @@ static void test_getnameinfo_all(void)
 
 static int can_use_network(void)
 {
-	int status;
+	const char *usenet;
 
-	/* try to ping minix3.org */
-	status = system("ping -w 5 www.minix3.org > /dev/null 2>&1");
-	if (status == 127)
-	{
-		printf("cannot execute ping\n");
-		err();
-	}
+	/* set $USENETWORK to "yes" or "no" to indicate whether
+	 * an internet connection is to be expected; defaults to "no"
+	 */
+	usenet = getenv("USENETWORK");
+	if (!usenet || !*usenet) return 0; /* default: disable network */
+	if (strcmp(usenet, "yes") == 0) return 1; /* network enabled */
+	if (strcmp(usenet, "no") == 0) return 0; /* network disabled */
 
-	return status == 0;
+	fprintf(stderr, "warning: invalid $USENETWORK value: %s\n", usenet);
+	return 0;
 }
 
 int main(void)
@@ -597,8 +598,6 @@ int main(void)
 	start(48);
 
 	use_network = can_use_network();
-	if (!use_network)
-		printf("Warning: no network\n");
 	test_getaddrinfo_all(use_network);
 	test_getnameinfo_all();