[LTP] [PATCH v2] lib6/in6_2: don't assume that machine has 'eth0' interface name

* [LTP] [PATCH v2] lib6/in6_2: don't assume that machine has 'eth0' interface name
@ 2015-06-09 13:01 Alexey Kodanev
       [not found] ` <55805135.3040401@oracle.com>
  0 siblings, 1 reply; 3+ messages in thread
From: Alexey Kodanev @ 2015-06-09 13:01 UTC (permalink / raw)
  To: ltp-list; +Cc: vasily.isaenko

systemd can rename network interfaces. We should look at LHOST_IFACES
variable for pre-defined test interface names.

Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
---
v2: use sscanf() instead of strchr()
    allocate buffer on the stack

 testcases/network/lib6/in6_02.c |   19 +++++++++++++++++++
 1 files changed, 19 insertions(+), 0 deletions(-)

diff --git a/testcases/network/lib6/in6_02.c b/testcases/network/lib6/in6_02.c
index fea1827..7cb3626 100644
--- a/testcases/network/lib6/in6_02.c
+++ b/testcases/network/lib6/in6_02.c
@@ -255,4 +255,23 @@ void initest(void)
 void setup(void)
 {
 	TEST_PAUSE;
+
+	tst_resm(TINFO, "get interface name from LHOST_IFACES var");
+
+	char *ifnames = getenv("LHOST_IFACES");
+
+	if (!ifnames) {
+		tst_resm(TWARN, "LHOST_IFACES not defined, default to eth0");
+		return;
+	}
+
+	static char name[256];
+
+	sscanf(ifnames, "%255s", name);
+
+	if (!strcmp(name, n2i[1].name))
+		return;
+
+	tst_resm(TINFO, "change default 'eth0' name to '%s'", name);
+	n2i[1].name = name;
 }
-- 
1.7.1


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