lkml.org 
[lkml]   [2007]   [Aug]   [7]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateTue, 7 Aug 2007 06:47:16 -0700 (PDT)
FromJames Morris <>
SubjectRe: [PATCH 1/1] file capabilities: clear fcaps on inode change (v2)
On Mon, 6 Aug 2007, Serge E. Hallyn wrote:

> +	err = security_inode_killpriv(out->f_path.dentry, LSM_NEED_LOCK);
> +	if (err)
> +		return err;
> +
>  	err = should_remove_suid(out->f_path.dentry);
>  	if (unlikely(err)) {
>  		mutex_lock(&inode->i_mutex);

It seems hackish to pass a needlock arg to an API, and that that we'll end 
up with some conceptually similar call-outs for both caps and setuid.

How about encapsulating this stuff so that there's something like:


	err = should_remove_privs();
	if (err)
		remove_privs();
with

void remove_privs()
{
	mutex_lock();
	__remove_privs();
	mutex_unlock();
}
and then __remove_privs() handles the logic for all file privileges, 
including at this stage suid and the LSM call for file caps ?



- James
-- 
James Morris
<jmorris@namei.org>
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-08-07 13:51    [W:0.181 / U:0.260 seconds]
©2003-2008 Jasper Spaans