mirror of
https://github.com/genuinetools/reg.git
synced 2024-08-21 06:10:23 -04:00
79 lines
1.6 KiB
Go
79 lines
1.6 KiB
Go
// +build linux
|
|
|
|
package fs
|
|
|
|
import (
|
|
"github.com/opencontainers/runc/libcontainer/cgroups"
|
|
"github.com/opencontainers/runc/libcontainer/configs"
|
|
"github.com/opencontainers/runc/libcontainer/system"
|
|
)
|
|
|
|
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 {
|
|
if system.RunningInUserNS() {
|
|
return nil
|
|
}
|
|
|
|
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
|
|
}
|