selftests/bpf: don't hardcode iptables/nc path in test_tcpnotify_user

system() is calling shell which should find the appropriate full path
via $PATH. On some systems, full path to iptables and/or nc might be
different that we one we have hardcoded.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

diff --git a/tools/testing/selftests/bpf/test_tcpnotify_user.c b/tools/testing/selftests/bpf/test_tcpnotify_user.c
index 4e43537..86152d9 100644 (file)
--- a/tools/testing/selftests/bpf/test_tcpnotify_user.c
+++ b/tools/testing/selftests/bpf/test_tcpnotify_user.c
@@ -148,17 +148,17 @@ int main(int argc, char **argv)
        pthread_create(&tid, NULL, poller_thread, (void *)&pmu_fd);
 
        sprintf(test_script,
-               "/usr/sbin/iptables -A INPUT -p tcp --dport %d -j DROP",
+               "iptables -A INPUT -p tcp --dport %d -j DROP",
                TESTPORT);
        system(test_script);
 
        sprintf(test_script,
-               "/usr/bin/nc 127.0.0.1 %d < /etc/passwd > /dev/null 2>&1 ",
+               "nc 127.0.0.1 %d < /etc/passwd > /dev/null 2>&1 ",
                TESTPORT);
        system(test_script);
 
        sprintf(test_script,
-               "/usr/sbin/iptables -D INPUT -p tcp --dport %d -j DROP",
+               "iptables -D INPUT -p tcp --dport %d -j DROP",
                TESTPORT);
        system(test_script);