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package cgroups
import (
"io/ioutil"
"os"
"path/filepath"
)
func init() {
defaultFilePerm = 0666
}
func newMock() (*mockCgroup, error) {
root, err := ioutil.TempDir("", "cgroups")
if err != nil {
return nil, err
}
subsystems, err := defaults(root)
if err != nil {
return nil, err
}
for _, s := range subsystems {
if err := os.MkdirAll(filepath.Join(root, string(s.Name())), defaultDirPerm); err != nil {
return nil, err
}
}
// make cpuset root files
for _, v := range []struct {
name string
value []byte
}{
{
name: "cpuset.cpus",
value: []byte("0-3"),
},
{
name: "cpuset.mems",
value: []byte("0-3"),
},
} {
if err := ioutil.WriteFile(filepath.Join(root, "cpuset", v.name), v.value, defaultFilePerm); err != nil {
return nil, err
}
}
return &mockCgroup{
root: root,
subsystems: subsystems,
}, nil
}
type mockCgroup struct {
root string
subsystems []Subsystem
}
func (m *mockCgroup) delete() error {
return os.RemoveAll(m.root)
}
func (m *mockCgroup) hierarchy() ([]Subsystem, error) {
return m.subsystems, nil
}
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