package v1

import "github.com/coreos/rkt/common/cgroup/v1"

Index ¶

• func CreateCgroups(m fs.Mounter, root string, enabledCgroups map[int][]string, mountContext string) error
• func GetCgroupPathByPid(pid int, controller string) (string, error)
• func GetControllerDirs(cgroups map[int][]string) []string
• func GetEnabledCgroups() (map[int][]string, error)
• func GetOwnCgroupPath(controller string) (string, error)
• func IsControllerMounted(c string) (bool, error)
• func JoinSubcgroup(controller string, subcgroup string) error
• func RemountCgroups(m fs.Mounter, root string, enabledCgroups map[int][]string, subcgroup string, readWrite bool) error

Functions ¶

func CreateCgroups ¶

func CreateCgroups(m fs.Mounter, root string, enabledCgroups map[int][]string, mountContext string) error

CreateCgroups mounts the v1 cgroup controllers hierarchy in /sys/fs/cgroup under root

func GetCgroupPathByPid ¶

func GetCgroupPathByPid(pid int, controller string) (string, error)

GetCgroupPathByPid returns the cgroup path of the process with the given pid and given controller.

func GetControllerDirs ¶

func GetControllerDirs(cgroups map[int][]string) []string

GetControllerDirs takes a map with the enabled cgroup controllers grouped by hierarchy and returns the directory names as they should be in /sys/fs/cgroup

func GetEnabledCgroups ¶

func GetEnabledCgroups() (map[int][]string, error)

GetEnabledCgroups returns a map with the enabled cgroup controllers grouped by hierarchy

func GetOwnCgroupPath ¶

func GetOwnCgroupPath(controller string) (string, error)

GetOwnCgroupPath returns the cgroup path of this process in controller hierarchy

func IsControllerMounted ¶

func IsControllerMounted(c string) (bool, error)

IsControllerMounted returns whether a controller is mounted by checking that cgroup.procs is accessible

func JoinSubcgroup ¶

func JoinSubcgroup(controller string, subcgroup string) error

JoinSubcgroup makes the calling process join the subcgroup hierarchy on a particular controller

func RemountCgroups ¶

func RemountCgroups(m fs.Mounter, root string, enabledCgroups map[int][]string, subcgroup string, readWrite bool) error

RemountCgroups remounts the v1 cgroup hierarchy under root. It mounts /sys/fs/cgroup/[controller] read-only, but leaves needed knobs in the pod's subcgroup read-write, such that systemd inside stage1 can apply isolators to them. It leaves /sys read-write if the given readWrite parameter is true. When this is done, <stage1>/sys/fs/cgroup/<controller> should be RO, and <stage1>/sys/fs/cgroup/<cotroller>/.../machine-rkt/.../system.slice should be RW

Source Files ¶

cgroup.go