Makefile, conf, passt: Drop passt4netns references, explicit argc check

Nobody currently calls this as passt4netns, that was the name I used
before 'pasta', drop any reference before it's too late.

While at it, explicitly check that argc is bigger than or equal to
one, just as a defensive measure: argv[0] being NULL is not an issue
anyway.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/passt.c b/passt.c
index b5086d8..67ad1c7 100644
--- a/passt.c
+++ b/passt.c
@@ -322,16 +322,21 @@ int main(int argc, char **argv)
 	sigaction(SIGTERM, &sa, NULL);
 	sigaction(SIGQUIT, &sa, NULL);
 
-	if (strstr(argv[0], "pasta") || strstr(argv[0], "passt4netns")) {
+	if (argc < 1)
+		exit(EXIT_FAILURE);
+
+	if (strstr(argv[0], "pasta")) {
 		sa.sa_handler = pasta_child_handler;
 		sigaction(SIGCHLD, &sa, NULL);
 		signal(SIGPIPE, SIG_IGN);
 
 		c.mode = MODE_PASTA;
 		log_name = "pasta";
-	} else {
+	} else if (strstr(argv[0], "passt")) {
 		c.mode = MODE_PASST;
 		log_name = "passt";
+	} else {
+		exit(EXIT_FAILURE);
 	}
 
 	if (madvise(pkt_buf, TAP_BUF_BYTES, MADV_HUGEPAGE))