From 3445f2f9f244d28847011b406ff49c43ae88834a Mon Sep 17 00:00:00 2001
From: dchagin <dchagin@FreeBSD.org>
Date: Sun, 24 May 2015 15:00:27 +0000
Subject: [PATCH] Add a function for converting wait options.

Differential Revision:	https://reviews.freebsd.org/D1045
Reviewed by:	trasz
---
 sys/compat/linux/linux_misc.c | 19 +++++++++++++++++++
 sys/compat/linux/linux_misc.h | 13 ++++++++++++-
 2 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/sys/compat/linux/linux_misc.c b/sys/compat/linux/linux_misc.c
index df0c449a219b..e3b619c50cda 100644
--- a/sys/compat/linux/linux_misc.c
+++ b/sys/compat/linux/linux_misc.c
@@ -2008,3 +2008,22 @@ linux_tdfind(struct thread *td, lwpid_t tid, pid_t pid)
 
 	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;
+}
diff --git a/sys/compat/linux/linux_misc.h b/sys/compat/linux/linux_misc.h
index e86afcd88213..be2da813f856 100644
--- a/sys/compat/linux/linux_misc.h
+++ b/sys/compat/linux/linux_misc.h
@@ -113,10 +113,21 @@ struct l_new_utsname {
 
 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);