Re: [PATCH] coredump - as root not only if euid switched

From: Peter Waechtler
Date: Thu Apr 22 2004 - 04:42:23 EST

On Thursday, April 22, 2004, at 10:55AM, Andrew Morton <akpm@xxxxxxxx> wrote:

>Peter Waechtler <pwaechtler@xxxxxxx> wrote:
>> But I agree that sys_unlink should be the fast call and dumping core
>> is the exception :)
>> would fastcall do_unlink() help? I guess the arg is then passed in a
>> register
>I've never been able to measure any size or space benefit for fastcall, and
>we do it via compiler options kernel-wide nowadays.
>The above will work fine. You can probably just open-code it at the place
>where you're unlinking the file.
>(why are you trying to unlink the old file anyway?)

For security measure :O
I tried on solaris: touch the core file as user, open it and wait, dump core
as root -> nope, couldn't read the damn core - it was unlinked and created!
So do I want.
I will sent the new patch from home.

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