From: Dmitry V. Levin <ldv@altlinux.org>
Date: Wed, 14 Jan 2015 12:47:45 +0000 (+0000)
Subject: tests: skip sendmmsg/recvmmsg test if these syscalls are not implemented in kernel
X-Git-Tag: v4.10~191
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=95cbf6ebfdbf4739fb9c65d46487cb0210b539a4;p=strace

tests: skip sendmmsg/recvmmsg test if these syscalls are not implemented in kernel

* tests/mmsg.c: #include <errno.h>
(main): Return 77 if sendmmsg failed with ENOSYS.
---

diff --git a/tests/mmsg.c b/tests/mmsg.c
index 496111bf..fddd7d15 100644
--- a/tests/mmsg.c
+++ b/tests/mmsg.c
@@ -4,6 +4,7 @@
 #include <sys/socket.h>
 #include <unistd.h>
 #include <fcntl.h>
+#include <errno.h>
 #include <assert.h>
 
 int
@@ -61,7 +62,10 @@ main(void)
 	assert(dup2(sv[R], R) == R);
 	assert(close(sv[R]) == 0);
 
-	assert(sendmmsg(W, mmh, n_mmh, 0) == n_mmh);
+	int r = sendmmsg(W, mmh, n_mmh, 0);
+	if (r < 0 && errno == ENOSYS)
+		return 77;
+	assert((size_t)r == n_mmh);
 	assert(close(W) == 0);
 
 	assert(recvmmsg(R, mmh, n_mmh, 0, NULL) == n_mmh);