Re: Bug#274860: Acknowledgement (kernel-image-2.6.8-1-686: CDROM_SEND_PACKET ioctls only work as root)

From: Jens Axboe
Date: Mon Oct 04 2004 - 09:29:53 EST


On Mon, Oct 04 2004, Luke Kenneth Casson Leighton wrote:
> On Mon, Oct 04, 2004 at 04:01:46PM +0200, Jens Axboe wrote:
> > On Mon, Oct 04 2004, Luke Kenneth Casson Leighton wrote:
> > > found it.
> > >
> > > it's a new piece of kernel code verify_command in
> > > drivers/block/scsi_ioctl.c, which checks for the capability
> > > CAP_SYS_RAWIO.
> > >
> > > ah, dammit.
> > >
> > > for k3b to work, you'd have to install it setuid root, call
> > > getcap(), remove all but the necessary capabilities (i.e. don't
> > > remove CAP_SYS_RAWIO), do a setfsuid() and setfsgid() and do
> > > a setcap().
> >
> > it works in 2.6.9-rcX.
>
> okay so someone has added the GET_CAPABILITY to verify_command in
> scsi_block.c there, yes?

GET_CONFIGURATION, yes. There have been a number of additions since
2.6.8.

--
Jens Axboe

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