/usr/share/gocode/src/github.com/opencontainers/runc/libcontainer/cgroups/fs/devices.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 62 63 64 65 66 67 68 69 70 71 72 73 | // +build linux
package fs
import (
"github.com/opencontainers/runc/libcontainer/cgroups"
"github.com/opencontainers/runc/libcontainer/configs"
)
type DevicesGroup struct {
}
func (s *DevicesGroup) Name() string {
return "devices"
}
func (s *DevicesGroup) Apply(d *cgroupData) error {
_, err := d.join("devices")
if err != nil {
// We will return error even it's `not found` error, devices
// cgroup is hard requirement for container's security.
return err
}
return nil
}
func (s *DevicesGroup) Set(path string, cgroup *configs.Cgroup) error {
devices := cgroup.Resources.Devices
if len(devices) > 0 {
for _, dev := range devices {
file := "devices.deny"
if dev.Allow {
file = "devices.allow"
}
if err := writeFile(path, file, dev.CgroupString()); err != nil {
return err
}
}
return nil
}
if !cgroup.Resources.AllowAllDevices {
if err := writeFile(path, "devices.deny", "a"); err != nil {
return err
}
for _, dev := range cgroup.Resources.AllowedDevices {
if err := writeFile(path, "devices.allow", dev.CgroupString()); err != nil {
return err
}
}
return nil
}
if err := writeFile(path, "devices.allow", "a"); err != nil {
return err
}
for _, dev := range cgroup.Resources.DeniedDevices {
if err := writeFile(path, "devices.deny", dev.CgroupString()); err != nil {
return err
}
}
return nil
}
func (s *DevicesGroup) Remove(d *cgroupData) error {
return removePath(d.path("devices"))
}
func (s *DevicesGroup) GetStats(path string, stats *cgroups.Stats) error {
return nil
}
|