unfs3: Add missing header files

These enable builds with additional warnings as errors

(From OE-Core rev: 2a04a5d5b732107316e0dd22fd59bf67b2e3572d)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/unfs3/unfs3/0001-fix-building-on-macOS.patch

@@ -0,0 +1,27 @@
+From 989b87ae46b3183a742031373fbb3e912ab9b666 Mon Sep 17 00:00:00 2001
+From: Andrey Filipenkov <decapitator@ukr.net>
+Date: Wed, 2 Nov 2022 13:38:40 +0300
+Subject: [PATCH] fix building on macOS
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+Upstream-Status: Backport [https://github.com/unfs3/unfs3/commit/989b87ae46b3183a742031373fbb3e912ab9b666]
+---
+ attr.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/attr.c b/attr.c
+index 6253e84..0ce9375 100644
+--- a/attr.c
++++ b/attr.c
+@@ -18,6 +18,8 @@
+ #include <utime.h>
+ #include <errno.h>
+ #include <dirent.h>
++#include <stdlib.h>
++#include <string.h>
+ 
+ #include "backend.h"
+ #include "nfs.h"
+-- 
+2.39.1
+

meta/recipes-devtools/unfs3/unfs3_git.bb

@@ -16,6 +16,7 @@ SRC_URI = "git://github.com/unfs3/unfs3.git;protocol=https;branch=master \
            file://0001-daemon.c-Fix-race-window-for-writing-of-the-pid-file.patch \
            file://0001-Alias-off64_t-to-off_t-on-linux-if-not-defined.patch \
            file://0001-locate.c-Include-attr.h.patch \
+           file://0001-fix-building-on-macOS.patch \
            "
 SRCREV = "c8f2d2cd4529955419bad0e163f88d47ff176b8d"
 UPSTREAM_CHECK_GITTAGREGEX = "unfs3\-(?P<pver>\d+(\.\d+)+)"