From f39d9c91318569a1ab7507d46e15147f5fef659e Mon Sep 17 00:00:00 2001
From: Greg V <greg@unrelenting.technology>
Date: Wed, 14 Jul 2021 17:52:32 -0700
Subject: [PATCH] libkern: import strnstr from libc

Required for drm-kmod 5.6 (amdgpu).

Reviewed by:		bz, hselasky, nc
Differential Revision:	https://reviews.freebsd.org/D31131
---
 sys/conf/files    | 1 +
 sys/sys/libkern.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/sys/conf/files b/sys/conf/files
index 245bbcb01374..ee1e356d9f61 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -4099,6 +4099,7 @@ libkern/strncat.c		standard
 libkern/strncmp.c		standard
 libkern/strncpy.c		standard
 libkern/strnlen.c		standard
+libkern/strnstr.c		standard
 libkern/strrchr.c		standard
 libkern/strsep.c		standard
 libkern/strspn.c		standard
diff --git a/sys/sys/libkern.h b/sys/sys/libkern.h
index 37838c99ba0c..d8d3dce1b705 100644
--- a/sys/sys/libkern.h
+++ b/sys/sys/libkern.h
@@ -186,6 +186,7 @@ int	 strncasecmp(const char *, const char *, size_t);
 int	 strncmp(const char *, const char *, size_t);
 char	*strncpy(char * __restrict, const char * __restrict, size_t);
 size_t	 strnlen(const char *, size_t);
+char	*strnstr(const char *, const char *, size_t);
 char	*strrchr(const char *, int);
 char	*strsep(char **, const char *delim);
 size_t	 strspn(const char *, const char *);