1 files changed, 52 insertions, 0 deletions
diff --git a/lib/libc/gen/kqueue1.c b/lib/libc/gen/kqueue1.c
new file mode 100644
index 000000000000..b27a8f63019e
--- /dev/null
+++ b/lib/libc/gen/kqueue1.c
@@ -0,0 +1,52 @@
+/*-
+ * Copyright (c) 2023 The FreeBSD Foundation
+ *
+ * This software were developed by Konstantin Belousov <kib@FreeBSD.org>
+ * under sponsorship from the FreeBSD Foundation.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/event.h>
+#include <errno.h>
+#include <fcntl.h>
+
+/*
+ * Provide some NetBSD compatibility.  They support a set of O_*
+ * flags, we only carry O_CLOEXEC, and accept but ignore O_NONBLOCK.
+ */
+int
+kqueue1(int openflags)
+{
+	u_int flags;
+
+	if ((openflags & ~(O_CLOEXEC | O_NONBLOCK)) != 0) {
+		errno = EINVAL;
+		return (-1);
+	}
+
+	flags = 0;
+	if ((openflags & O_CLOEXEC) != 0)
+		flags |= KQUEUE_CLOEXEC;
+	return (kqueuex(flags));
+}