+#include <linux/xattr.h>
+
+extern struct xattr_handler devpts_xattr_security_handler;
+
+static struct xattr_handler *devpts_xattr_handlers[] = {
+#ifdef CONFIG_DEVPTS_FS_SECURITY
+ &devpts_xattr_security_handler,
+#endif
+ NULL
+};
+
+static int devpts_permission(struct inode *inode, int mask, struct nameidata *nd)
+{
+ int ret = -EACCES;
+
+ if (vx_check(inode->i_xid, VX_IDENT))
+ ret = generic_permission(inode, mask, NULL);
+ return ret;
+}
+
+static struct inode_operations devpts_file_inode_operations = {
+#ifdef CONFIG_DEVPTS_FS_XATTR
+ .setxattr = generic_setxattr,
+ .getxattr = generic_getxattr,
+ .listxattr = generic_listxattr,
+ .removexattr = generic_removexattr,
+#endif
+ .permission = devpts_permission,
+};