Index: sys/compat/linux/linux_misc.h
===================================================================
--- sys/compat/linux/linux_misc.h
+++ sys/compat/linux/linux_misc.h
@@ -111,10 +111,20 @@
 
 extern int stclohz;
 
-#define __WCLONE 0x80000000
+#define	LINUX_WNOHANG		0x00000001
+#define	LINUX_WUNTRACED		0x00000002
+#define	LINUX_WSTOPPED		LINUX_WUNTRACED
+#define	LINUX_WEXITED		0x00000004
+#define	LINUX_WCONTINUED	0x00000008
+#define	LINUX_WNOWAIT		0x01000000
+
+#define	__WNOTHREAD		0x20000000
+#define	__WALL			0x40000000
+#define	__WCLONE		0x80000000
 
 int linux_common_wait(struct thread *td, int pid, int *status,
 			int options, struct rusage *ru);
+void linux_to_bsd_waitopts(int options, int *bsdopts);
 int linux_set_upcall_kse(struct thread *td, register_t stack);
 int linux_set_cloned_tls(struct thread *td, void *desc);
 struct thread	*linux_tdfind(struct thread *, lwpid_t, pid_t);
Index: sys/compat/linux/linux_misc.c
===================================================================
--- sys/compat/linux/linux_misc.c
+++ sys/compat/linux/linux_misc.c
@@ -1993,3 +1993,23 @@
 
 	return (tdt);
 }
+
+void
+linux_to_bsd_waitopts(int options, int *bsdopts)
+{
+
+	if (options & LINUX_WNOHANG)
+		*bsdopts |= WNOHANG;
+	if (options & LINUX_WUNTRACED)
+		*bsdopts |= WUNTRACED;
+	if (options & LINUX_WEXITED)
+		*bsdopts |= WEXITED;
+	if (options & LINUX_WCONTINUED)
+		*bsdopts |= WCONTINUED;
+	if (options & LINUX_WNOWAIT)
+		*bsdopts |= WNOWAIT;
+
+	if (options & __WCLONE)
+		*bsdopts |= WLINUXCLONE;
+}
+