libsys: move __libsys_interposer consumers

These system call wrappers call interposed system calls in fairly
trivial ways.  Move them over to libsys so all __libsys_interposer
consumers end up in libsys.

Also move recvmmsg and sendmmsg as they are documented with recv and
send.

Reviewed by:	kib, emaste, imp
Pull Request:	https://github.com/freebsd/freebsd-src/pull/908

1 files changed, 51 insertions, 0 deletions

diff --git a/lib/libsys/wait.c b/lib/libsys/wait.c
new file mode 100644
index 000000000000..c400d07f9dd5
--- /dev/null
+++ b/lib/libsys/wait.c
@@ -0,0 +1,51 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * 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.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 "namespace.h"
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <sys/resource.h>
+#include "un-namespace.h"
+
+#include "libc_private.h"
+
+pid_t __wait(int *);
+
+pid_t
+__wait(int *istat)
+{
+	return (((pid_t (*)(pid_t, int *, int, struct rusage *))
+	    __libsys_interposing[INTERPOS_wait4])(WAIT_ANY, istat, 0, NULL));
+}
+
+__weak_reference(__wait, wait);
+__weak_reference(__wait, _wait);