Bug#732117: mount under strace -f

[ael <law_ence.dev@ntlworld.com>]

On Sun, Dec 15, 2013 at 01:51:40PM -0500, Phillip Susi wrote:
> No, it's being called with a 4096 byte buffer size.  The problem seems
> to be here:
> 
> mount("/dev/loop0", "/loopmnt1", "iso9660", MS_MGC_VAL, NULL) = -1
> EACCES (Permission denied)
> 
> Root shouldn't be denied permission to mount.  Maybe you're using
> selinux or an apparmor profile or something?  I don't really know
> exactly how those work but the problem seems to be on the kernel side.

I have libselinux1 installed as a dependency going back to core-utils
but I am not making any explicit use of it.

Also I can mount, for example, a usbstick:
 # mount /dev/disk/by-label/something /loopmnt1
without problems.

A further data point: I have tried under a self compiled stock kernel:

Linux exact 3.13.0-rc4_exact-293734-g319e2e3 #380 Tue Dec 17 16:42:27 GMT 2013 i686 GNU/Linux

Same results. So it seems that it is not a particular kernel.

ael