linux-kernel - Re: [Patch 1/2] selinux: ajust rules for ATTR

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Date:	Wed, 19 Aug 2009 02:26:47 +0900
From:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
To:	Amerigo Wang <amwang@...hat.com>
Cc:	Stephen Smalley <sds@...ho.nsa.gov>, linux-kernel@...r.kernel.org,
	esandeen@...hat.com, eteo@...hat.com, eparis@...hat.com,
	linux-fsdevel@...r.kernel.org, akpm@...ux-foundation.org,
	viro@...iv.linux.org.uk
Subject: Re: [Patch 1/2] selinux: ajust rules for ATTR_FORCE

[My ISP still seems to be stopping email server :-/]

>>> So if I read this correctly, (ATTR_FORCE| ATTR_KILL_SUID|ATTR_MODE) will 
>>> not return here, since 'ia_valid' will be ATTR_FORCE finally.
>>> 
>>> I think you forgot to clear ATTR_FORCE here...
>> 
>> Whoops, good catch. Fortunately, it doesn't seem to have actual problem,
>> but it's bug obviously, and sorry for that. Fixed patch was attached.
> 
> You can add my:
> Acked-by:  Stephen Smalley <sds@...ho.nsa.gov>

Thanks.

Amerigo, could you handle that patch with his ack for the remaining work?

BTW, I think [Patch 2/2] of

-	newattrs.ia_valid |= should_remove_suid(dentry);
+	ret = should_remove_suid(dentry);
+	newattrs.ia_valid |= ret;
+	if (ret)
+		newattrs.ia_valid |= ATTR_FORCE;

should be

	killsuid = should_remove_suid(dentry);
	if (killsuid)
		newattrs.ia_valid |= killsuid | ATTR_FORCE;

or something (someone pointed out it) on earlier thread, IIRC.

Thanks.
-- 
OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
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