Runc needs to copy certain files from the top of the cgroup cpuset hierarchy
into the container's cpuset cgroup directory. Currently, runc determines
which directory is the top of the hierarchy by using the parent dir of
the first entry in /proc/self/mountinfo of type cgroup.
This creates problems when cgroup subsystems are mounted arbitrarily in
different dirs on the host.
Now, we use the most deeply nested mountpoint that contains the
container's cpuset cgroup directory.
Signed-off-by: Konstantinos Karampogias <konstantinos.karampogias@swisscom.com>
Signed-off-by: Will Martin <wmartin@pivotal.io>
Prior to this change a cgroup with a `:` character in it's path was not
parsed correctly (as occurs on some instances of systemd cgroups under
some versions of systemd, e.g. 225 with accounting).
This fixes that issue and adds a test.
Signed-off-by: Euan Kemp <euank@coreos.com>
GetMounts is very cpu-expensive. I'll change other funcs in this package
to reuse code from GetCgroupMounts later.
Signed-off-by: Alexander Morozov <lk4d4@docker.com>
Craig Furman
Mrunal Patel
Euan Kemp
rajasec
Alexander Morozov