Create new xattrfs attribute and fs_getattr_all_xattr_fs() interface

Create a new attribute and fs_getattr_all_xattr_fs() interface that will
be used for all the filesystems that support xattr

policy/modules/kernel/filesystem.if

@@ -106,6 +106,64 @@ interface(`fs_exec_noxattr',`
 	can_exec($1, noxattrfs)
 ')
 
+########################################
+## <summary>
+##	Transform specified type into a filesystem
+##	type which has extended attribute
+##	support.
+## </summary>
+## <param name="domain">
+##	<summary>
+##	Domain allowed access.
+##	</summary>
+## </param>
+#
+interface(`fs_xattr_type',`
+	gen_require(`
+		attribute xattrfs;
+	')
+
+	fs_type($1)
+
+	typeattribute $1 xattrfs;
+')
+
+########################################
+## <summary>
+##	Get the attributes of all the
+##	filesystems which have extended
+##	attributes.
+##	This includes pseudo filesystems.
+## </summary>
+## <desc>
+##	<p>
+##	Allow the specified domain to
+##	get the attributes of a filesystems
+##	which have extended attributes.
+##	Example attributes:
+##	</p>
+##	<ul>
+##		<li>Type of the file system (e.g., tmpfs)</li>
+##		<li>Size of the file system</li>
+##		<li>Available space on the file system</li>
+##	</ul>
+## </desc>
+## <param name="domain">
+##	<summary>
+##	Domain allowed access.
+##	</summary>
+## </param>
+## <infoflow type="read" weight="5"/>
+## <rolecap/>
+#
+interface(`fs_getattr_all_xattr_fs',`
+	gen_require(`
+		attribute xattrfs;
+	')
+
+	allow $1 xattrfs:filesystem getattr;
+')
+
 ########################################
 ## <summary>
 ##	Mount a persistent filesystem which

policy/modules/kernel/filesystem.te

@@ -8,6 +8,7 @@ policy_module(filesystem, 1.18.0)
 attribute filesystem_type;
 attribute filesystem_unconfined_type;
 attribute noxattrfs;
+attribute xattrfs;
 
 ##############################
 #