tree 06e906264998299b528443d21f8e7c3fbd18c27d
parent edbae5e0b21d915015fa87c16690171ca71b79bf
author David Ahern <dsa@cumulusnetworks.com> 1483662142 -0800
committer Stephen Hemminger <stephen@networkplumber.org> 1483992788 -0800

ip vrf: Improve cgroup2 error messages

Currently, if a non-root user attempts to run ip vrf exec a non-helpful
error is returned:

$ ip vrf exec mgmt bash
Failed to mount cgroup2. Are CGROUPS enabled in your kernel?

Only show the CGROUPS kernel hint for the ENODEV error and for the
rest show the strerror for the errno. So now:

$ ip/ip vrf exec mgmt bash
Failed to mount cgroup2: Operation not permitted

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>