Add libc wrappers for the new sendmmsg and recvmmsg system calls.

Feedback tb@, miod@, jca@
OK jca@

1 files changed, 32 insertions, 0 deletions

diff --git a/lib/libc/sys/w_recvmmsg.c b/lib/libc/sys/w_recvmmsg.c
new file mode 100644
index 00000000000..e274c04dc16
--- /dev/null
+++ b/lib/libc/sys/w_recvmmsg.c
@@ -0,0 +1,32 @@
+/*	$OpenBSD: w_recvmmsg.c,v 1.1 2022/09/09 13:52:59 mbuhl Exp $ */
+/*
+ * Copyright (c) 2022 Moritz Buhl <mbuhl@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/socket.h>
+#include "cancel.h"
+
+int
+recvmmsg(int fd, struct mmsghdr *mmsg, unsigned int vlen, int flags,
+    struct timespec *ts)
+{
+	int ret;
+
+	ENTER_CANCEL_POINT(1);
+	ret = HIDDEN(recvmmsg)(fd, mmsg, vlen, flags, ts);
+	LEAVE_CANCEL_POINT(ret == -1);
+	return (ret);
+}
+DEF_CANCEL(recvmmsg);