81 lines
1.7 KiB
Go
81 lines
1.7 KiB
Go
// +build linux
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package fs
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import (
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"github.com/opencontainers/runc/libcontainer/cgroups"
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"github.com/opencontainers/runc/libcontainer/configs"
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"github.com/opencontainers/runc/libcontainer/system"
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)
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type DevicesGroup struct {
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}
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func (s *DevicesGroup) Name() string {
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return "devices"
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}
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func (s *DevicesGroup) Apply(d *cgroupData) error {
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_, err := d.join("devices")
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if err != nil {
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// We will return error even it's `not found` error, devices
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// cgroup is hard requirement for container's security.
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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 *DevicesGroup) Set(path string, cgroup *configs.Cgroup) error {
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if system.RunningInUserNS() {
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return nil
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}
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devices := cgroup.Resources.Devices
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if len(devices) > 0 {
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for _, dev := range devices {
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file := "devices.deny"
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if dev.Allow {
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file = "devices.allow"
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}
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if err := writeFile(path, file, dev.CgroupString()); err != nil {
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return err
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}
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}
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return nil
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}
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if cgroup.Resources.AllowAllDevices != nil {
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if *cgroup.Resources.AllowAllDevices == false {
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if err := writeFile(path, "devices.deny", "a"); err != nil {
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return err
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}
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for _, dev := range cgroup.Resources.AllowedDevices {
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if err := writeFile(path, "devices.allow", dev.CgroupString()); err != nil {
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return err
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}
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}
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return nil
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}
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if err := writeFile(path, "devices.allow", "a"); err != nil {
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return err
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}
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}
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for _, dev := range cgroup.Resources.DeniedDevices {
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if err := writeFile(path, "devices.deny", dev.CgroupString()); err != nil {
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return err
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}
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}
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return nil
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}
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func (s *DevicesGroup) Remove(d *cgroupData) error {
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return removePath(d.path("devices"))
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}
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func (s *DevicesGroup) GetStats(path string, stats *cgroups.Stats) error {
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return nil
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}
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