/usr/share/gocode/src/github.com/opencontainers/runc/libcontainer/cgroups/fs/freezer.go is in golang-github-opencontainers-runc-dev 0.0.8+dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | // +build linux
package fs
import (
"fmt"
"strings"
"time"
"github.com/opencontainers/runc/libcontainer/cgroups"
"github.com/opencontainers/runc/libcontainer/configs"
)
type FreezerGroup struct {
}
func (s *FreezerGroup) Name() string {
return "freezer"
}
func (s *FreezerGroup) Apply(d *cgroupData) error {
_, err := d.join("freezer")
if err != nil && !cgroups.IsNotFound(err) {
return err
}
return nil
}
func (s *FreezerGroup) Set(path string, cgroup *configs.Cgroup) error {
switch cgroup.Resources.Freezer {
case configs.Frozen, configs.Thawed:
if err := writeFile(path, "freezer.state", string(cgroup.Resources.Freezer)); err != nil {
return err
}
for {
state, err := readFile(path, "freezer.state")
if err != nil {
return err
}
if strings.TrimSpace(state) == string(cgroup.Resources.Freezer) {
break
}
time.Sleep(1 * time.Millisecond)
}
case configs.Undefined:
return nil
default:
return fmt.Errorf("Invalid argument '%s' to freezer.state", string(cgroup.Resources.Freezer))
}
return nil
}
func (s *FreezerGroup) Remove(d *cgroupData) error {
return removePath(d.path("freezer"))
}
func (s *FreezerGroup) GetStats(path string, stats *cgroups.Stats) error {
return nil
}
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