tests: add a test for decoding and dumping of recvmmsg/sendmmsg
* configure (AC_CHECK_FUNCS): Add sendmmsg.
* tests/mmsg.c: New file.
* tests/mmsg.expected: New file.
* tests/mmsg.test: New test.
* tests/.gitignore: Add mmsg.
* tests/Makefile.am (CHECK_PROGRAMS): Add mmsg.
(TESTS): Add mmsg.test.
(EXTRA_DIST): Add mmsg.expected.
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
diff --git a/tests/mmsg.c b/tests/mmsg.c
new file mode 100644
index 0000000..496111b
--- /dev/null
+++ b/tests/mmsg.c
@@ -0,0 +1,74 @@
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include <sys/socket.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <assert.h>
+
+int
+main(void)
+{
+#if defined(HAVE_SENDMMSG) && defined(HAVE_STRUCT_MMSGHDR)
+ const int R = 0, W = 1;
+ int fd;
+ int sv[2];
+ char one[] = "one";
+ char two[] = "two";
+ char three[] = "three";
+
+ struct iovec iov[] = {
+ {
+ .iov_base = one,
+ .iov_len = sizeof(one) - 1
+ }, {
+ .iov_base = two,
+ .iov_len = sizeof(two) - 1
+ }, {
+ .iov_base = three,
+ .iov_len = sizeof(three) - 1
+ }
+ };
+
+ struct mmsghdr mmh[] = {
+ {
+ .msg_hdr = {
+ .msg_iov = iov + 0,
+ .msg_iovlen = 2,
+ }
+ }, {
+ .msg_hdr = {
+ .msg_iov = iov + 2,
+ .msg_iovlen = 1,
+ }
+ }
+ };
+#define n_mmh (sizeof(mmh)/sizeof(mmh[0]))
+
+ /*
+ * Following open/dup2/close calls make the output of strace
+ * more predictable, so we can just compare the output and
+ * expected output (mmsg.expected) for testing purposes.
+ */
+ while ((fd = open("/dev/null", O_RDWR)) < 3)
+ assert(fd >= 0);
+ (void) close(3);
+
+ assert(socketpair(AF_UNIX, SOCK_DGRAM, 0, sv) == 0);
+
+ assert(dup2(sv[W], W) == W);
+ assert(close(sv[W]) == 0);
+ assert(dup2(sv[R], R) == R);
+ assert(close(sv[R]) == 0);
+
+ assert(sendmmsg(W, mmh, n_mmh, 0) == n_mmh);
+ assert(close(W) == 0);
+
+ assert(recvmmsg(R, mmh, n_mmh, 0, NULL) == n_mmh);
+ assert(close(R) == 0);
+
+ return 0;
+#else
+ return 77;
+#endif
+}