Hi All, This is similar to a post by a John sometime in Aug-2010. He was trying to run Xorg in an lxc which required access to /dev/mem. Am trying to run a custom/proprietary application that needs the same (access to /dev/mem).
I have a privileged container - as in I've created the container as root on my device and start it as root. (root is the usually only user on embedded devices, unlike PC) I have been trying to ‘expose’ the /dev/mem device to my container because the application I run there needs it. However, am unable to do so - I always end up with a “Operation not permitted” error when I try to open /dev/mem. The following are the different things I tried 1) lxc-cgroup.devices.allow = c 1 1 in the conf file (and doing a "mknod /dev/mem c 1 1" on the container) 2) lxc-device -n <name> -- add /dev/mem to a running container (this causes /dev/mem to appear in the container without having to run any extra commands such as mknod. But opening it still fails) 3) lxc.aa_profile = unconfined (along with steps 1 & 2) Please advise what I can do to make /dev/mem accessible in lxc. A simple test am doing prior to running my actual application, is something like "head /dev/mem" in the container and check that it displays anything (other than Operation not permitted error). Thank you very much. Ganesh S. ps: Since this is my first mail to this group, please excuse if something is not right
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