On Mon, Aug 24, 2020 at 10:44:57PM +0300, Jarkko Sakkinen wrote: > On Fri, Aug 21, 2020 at 04:38:47PM -0300, Jason Gunthorpe wrote: > > On Thu, Aug 20, 2020 at 09:14:44AM -0700, James Bottomley wrote: > > > > > > eg we can't do it because we can't access /dev/tpm for permissions or > > > > something. > > > > > > I already said that: we can't it's root.root 0600 currently. All the > > > TSSs seem to change at least /dev/tpmrm to tpm.tpm 0660 but we can't do > > > that in the kernel because there's no fixed tpm uid/gid. > > > > Permissions is a pretty good reason to add a sysfs file. > > > > Jason > > I'm not sure why suid/sgid utility to read pcrs would be worse. suid would be more complex than this patch - most things ever made suid seem to have security bugs :\ Jason
