Subject: Re: simple tpe implementation
To: None <elad@NetBSD.org>
From: YAMAMOTO Takashi <yamt@mwd.biglobe.ne.jp>
List: tech-kern
Date: 02/02/2007 08:22:16 
> +	/* XXX Must be owned by root. */
> +	if (va->va_uid != 0)
> +		return (EPERM);
> +
> +	/* Must not be writable by group or other. */
> +	if (va->va_mode & (S_IWGRP | S_IWOTH))
> +		return (EPERM);
> +
> +	return (0);

this kind of permission checks are filesystem dependent.
consider acls or remote filesystems.

YAMAMOTO Takashi