posix_acl: uapi header split

Export the base definitions and the xattr representation of POSIX ACLs
to user space.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

include/linux/posix_acl.h

@@ -11,27 +11,7 @@
 #include <linux/bug.h>
 #include <linux/slab.h>
 #include <linux/rcupdate.h>
-
-#define ACL_UNDEFINED_ID	(-1)
-
-/* a_type field in acl_user_posix_entry_t */
-#define ACL_TYPE_ACCESS		(0x8000)
-#define ACL_TYPE_DEFAULT	(0x4000)
-
-/* e_tag entry in struct posix_acl_entry */
-#define ACL_USER_OBJ		(0x01)
-#define ACL_USER		(0x02)
-#define ACL_GROUP_OBJ		(0x04)
-#define ACL_GROUP		(0x08)
-#define ACL_MASK		(0x10)
-#define ACL_OTHER		(0x20)
-
-/* permissions in the e_perm field */
-#define ACL_READ		(0x04)
-#define ACL_WRITE		(0x02)
-#define ACL_EXECUTE		(0x01)
-//#define ACL_ADD		(0x08)
-//#define ACL_DELETE		(0x10)
+#include <uapi/linux/posix_acl.h>
 
 struct posix_acl_entry {
 	short			e_tag;

include/linux/posix_acl_xattr.h

@@ -10,25 +10,9 @@
 #define _POSIX_ACL_XATTR_H
 
 #include <uapi/linux/xattr.h>
+#include <uapi/linux/posix_acl_xattr.h>
 #include <linux/posix_acl.h>
 
-/* Supported ACL a_version fields */
-#define POSIX_ACL_XATTR_VERSION	0x0002
-
-/* An undefined entry e_id value */
-#define ACL_UNDEFINED_ID	(-1)
-
-struct posix_acl_xattr_entry {
-	__le16			e_tag;
-	__le16			e_perm;
-	__le32			e_id;
-};
-
-struct posix_acl_xattr_header {
-	__le32			a_version;
-};
-
-
 static inline size_t
 posix_acl_xattr_size(int count)
 {

include/uapi/linux/Kbuild

@@ -335,6 +335,8 @@ header-y += pkt_cls.h
 header-y += pkt_sched.h
 header-y += pmu.h
 header-y += poll.h
+header-y += posix_acl.h
+header-y += posix_acl_xattr.h
 header-y += posix_types.h
 header-y += ppdev.h
 header-y += ppp-comp.h

include/uapi/linux/posix_acl.h

+/*
+ * Copyright (C) 2002 Andreas Gruenbacher <a.gruenbacher@computer.org>
+ * Copyright (C) 2016 Red Hat, Inc.
+ *
+ * This file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This file is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ */
+
+#ifndef __UAPI_POSIX_ACL_H
+#define __UAPI_POSIX_ACL_H
+
+#define ACL_UNDEFINED_ID	(-1)
+
+/* a_type field in acl_user_posix_entry_t */
+#define ACL_TYPE_ACCESS		(0x8000)
+#define ACL_TYPE_DEFAULT	(0x4000)
+
+/* e_tag entry in struct posix_acl_entry */
+#define ACL_USER_OBJ		(0x01)
+#define ACL_USER		(0x02)
+#define ACL_GROUP_OBJ		(0x04)
+#define ACL_GROUP		(0x08)
+#define ACL_MASK		(0x10)
+#define ACL_OTHER		(0x20)
+
+/* permissions in the e_perm field */
+#define ACL_READ		(0x04)
+#define ACL_WRITE		(0x02)
+#define ACL_EXECUTE		(0x01)
+
+#endif  /* __UAPI_POSIX_ACL_H */

include/uapi/linux/posix_acl_xattr.h

+/*
+ * Copyright (C) 2002 Andreas Gruenbacher <a.gruenbacher@computer.org>
+ * Copyright (C) 2016 Red Hat, Inc.
+ *
+ * This file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This file is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ */
+
+#ifndef __UAPI_POSIX_ACL_XATTR_H
+#define __UAPI_POSIX_ACL_XATTR_H
+
+#include <linux/types.h>
+
+/* Supported ACL a_version fields */
+#define POSIX_ACL_XATTR_VERSION	0x0002
+
+/* An undefined entry e_id value */
+#define ACL_UNDEFINED_ID	(-1)
+
+struct posix_acl_xattr_entry {
+	__le16			e_tag;
+	__le16			e_perm;
+	__le32			e_id;
+};
+
+struct posix_acl_xattr_header {
+	__le32			a_version;
+};
+
+#endif	/* __UAPI_POSIX_ACL_XATTR_H */