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Re: [PATCH 2/2] file capabilities: turn on by default
From: Randy Dunlap <randy.dunlap_at_nospam>Date: Mon Sep 22 2008 - 21:09:55 GMT
To: "Serge E. Hallyn" <serue@us.ibm.com>
Serge E. Hallyn wrote:
> Quoting Randy Dunlap (randy.dunlap@oracle.com):
>> On Mon, 22 Sep 2008 13:49:01 -0500 Serge E. Hallyn wrote:
>>
>>> Now that file capabilities can be turned off at boot, go ahead
>>> and compile them into the kernel by default by making
>>> CONFIG_SECURITY_FILE_CAPABILITIES=y the default.
>> Hi,
>>
>> How much code does this add to everyone's kernel?
>
> Here are the sizes I get with Linus' plain tree and patched
> with both of these patches:
>
> master with file capabilities: 6241626
> master w/o file capabilities: 6241595
>
> patched with file capabilities: 6241782
> patched w/o file capabilities: 6241595
>
> So actually I don't like the added size.
>
>>> Note that the boot flag no_file_caps must be specified to turn
>>> file capabilities off, as by default they are on. So the
>>> default behavior is in fact changed.
>> If most people want this enable, using 'no_file_caps' makes
>> some sense. OTOH, if most people don't want/use it, then
>> having a 'file_caps_on' option would make more sense.
>>
>> Do you have any (unbiased :) ideas about this?
>
> I'll sit this one out I guess :)
BTW, I like Stephen's suggestion of using file_caps=0/1 instead of no_file_caps. -- ~Randy -- To unsubscribe from this list: send the line "unsubscribe linux-security-module" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html