linux-kernel - Re: [mmotm] iscsi

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Date:	Fri, 21 Mar 2008 11:41:25 -0400
From:	Konrad Rzeszutek <konrad@...nok.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Randy Dunlap <randy.dunlap@...cle.com>,
	linux-kernel@...r.kernel.org, ketuzsezr@...nok.org
Subject: Re: [mmotm] iscsi_ibft build error

On Thu, Mar 20, 2008 at 03:45:55PM -0700, Andrew Morton wrote:
> On Wed, 19 Mar 2008 11:56:55 -0700
> Randy Dunlap <randy.dunlap@...cle.com> wrote:
> 
> > mmotm-2008-0318-1720/drivers/firmware/iscsi_ibft.c: In function 'ibft_show_attribute':
> > mmotm-2008-0318-1720/drivers/firmware/iscsi_ibft.c:521: error: implicit declaration of function 'capable'
> > mmotm-2008-0318-1720/drivers/firmware/iscsi_ibft.c:521: error: 'CAP_SYS_ADMIN' undeclared (first use in this function)
> > mmotm-2008-0318-1720/drivers/firmware/iscsi_ibft.c:521: error: (Each undeclared identifier is reported only once
> > mmotm-2008-0318-1720/drivers/firmware/iscsi_ibft.c:521: error: for each function it appears in.)
> > make[3]: *** [drivers/firmware/iscsi_ibft.o] Error 1
> > 
> 
> --- a/drivers/firmware/iscsi_ibft.c~scsi-add-iscsi-ibft-support-fix
> +++ a/drivers/firmware/iscsi_ibft.c
> @@ -65,6 +65,7 @@
>  
>  
>  #include <linux/blkdev.h>
> +#include <linux/capability.h>
>  #include <linux/ctype.h>
>  #include <linux/device.h>
>  #include <linux/err.h>
> 
> should do the trick.
> 
> Does this driver actually need to run capable(CAP_SYS_ADMIN)?  Can we not
> rely upon permissions of the reelvant sysfs file?

I followed what the efivars driver does. The permissions of the
files are secure (as they are in the efivars), so one layer
of protection could be suffice?
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