func getSubsystemPath(c *configs.Cgroup, subsystem string) (string, error) {
mountpoint, err := cgroups.FindCgroupMountpoint(subsystem)
if err != nil {
return "", err
}
initPath, err := cgroups.GetInitCgroupDir(subsystem)
if err != nil {
return "", err
}
slice := "system.slice"
if c.Slice != "" {
slice = c.Slice
}
return filepath.Join(mountpoint, initPath, slice, getUnitName(c)), nil
}
func (raw *data) path(subsystem string) (string, error) {
mnt, err := cgroups.FindCgroupMountpoint(subsystem)
// If we didn't mount the subsystem, there is no point we make the path.
if err != nil {
return "", err
}
// If the cgroup name/path is absolute do not look relative to the cgroup of the init process.
if filepath.IsAbs(raw.cgroup) {
return filepath.Join(raw.root, subsystem, raw.cgroup), nil
}
parent, err := raw.parent(subsystem, mnt)
if err != nil {
return "", err
}
return filepath.Join(parent, raw.cgroup), nil
}