62 lines
1.2 KiB
Go
62 lines
1.2 KiB
Go
// +build linux
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package fs
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import (
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"fmt"
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"strings"
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"time"
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"github.com/opencontainers/runc/libcontainer/cgroups"
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"github.com/opencontainers/runc/libcontainer/configs"
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)
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type FreezerGroup struct {
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}
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func (s *FreezerGroup) Name() string {
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return "freezer"
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}
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func (s *FreezerGroup) Apply(d *cgroupData) error {
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_, err := d.join("freezer")
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if err != nil && !cgroups.IsNotFound(err) {
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return err
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}
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return nil
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}
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func (s *FreezerGroup) Set(path string, cgroup *configs.Cgroup) error {
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switch cgroup.Resources.Freezer {
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case configs.Frozen, configs.Thawed:
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if err := writeFile(path, "freezer.state", string(cgroup.Resources.Freezer)); err != nil {
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return err
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}
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for {
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state, err := readFile(path, "freezer.state")
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if err != nil {
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return err
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}
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if strings.TrimSpace(state) == string(cgroup.Resources.Freezer) {
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break
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}
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time.Sleep(1 * time.Millisecond)
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}
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case configs.Undefined:
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return nil
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default:
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return fmt.Errorf("Invalid argument '%s' to freezer.state", string(cgroup.Resources.Freezer))
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}
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return nil
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}
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func (s *FreezerGroup) Remove(d *cgroupData) error {
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return removePath(d.path("freezer"))
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}
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func (s *FreezerGroup) GetStats(path string, stats *cgroups.Stats) error {
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return nil
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}
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