package sys

import "github.com/containerd/containerd/sys"

Package sys provides access to the Get Child and Set Child prctl flags. See http://man7.org/linux/man-pages/man2/prctl.2.html

Index ¶

• Constants
• func CreateUnixSocket(path string) (net.Listener, error)
• func EpollCreate1(flag int) (int, error)
• func EpollCtl(epfd int, op int, fd int, event *unix.EpollEvent) error
• func EpollWait(epfd int, events []unix.EpollEvent, msec int) (int, error)
• func GetLocalListener(path string, uid, gid int) (net.Listener, error)
• func GetOpenFds(pid int) (int, error)
• func GetSubreaper() (int, error)
• func GetSystemCPUUsage() (uint64, error)
• func SetOOMScore(pid, score int) error
• func SetSubreaper(i int) error
• func StatAtime(st *syscall.Stat_t) syscall.Timespec
• func StatCtime(st *syscall.Stat_t) syscall.Timespec
• func StatMtime(st *syscall.Stat_t) syscall.Timespec
• type Exit
• func Reap(wait bool) (exits []Exit, err error)

Constants ¶

const OOMScoreMaxKillable = -999

OOMScoreMaxKillable is the maximum score keeping the process killable by the oom killer

Functions ¶

func CreateUnixSocket ¶

func CreateUnixSocket(path string) (net.Listener, error)

CreateUnixSocket creates a unix socket and returns the listener

func EpollCreate1 ¶

func EpollCreate1(flag int) (int, error)

EpollCreate1 directly calls unix.EpollCreate1

func EpollCtl ¶

func EpollCtl(epfd int, op int, fd int, event *unix.EpollEvent) error

EpollCtl directly calls unix.EpollCtl

func EpollWait ¶

func EpollWait(epfd int, events []unix.EpollEvent, msec int) (int, error)

EpollWait directly calls unix.EpollWait

func GetLocalListener ¶

func GetLocalListener(path string, uid, gid int) (net.Listener, error)

GetLocalListener returns a listerner out of a unix socket.

func GetOpenFds ¶

func GetOpenFds(pid int) (int, error)

GetOpenFds returns the number of open fds for the process provided by pid

func GetSubreaper ¶

func GetSubreaper() (int, error)

GetSubreaper returns the subreaper setting for the calling process

func GetSystemCPUUsage ¶

func GetSystemCPUUsage() (uint64, error)

GetSystemCPUUsage returns the host system's cpu usage in nanoseconds. An error is returned if the format of the underlying file does not match.

Uses /proc/stat defined by POSIX. Looks for the cpu statistics line and then sums up the first seven fields provided. See `man 5 proc` for details on specific field information.

func SetOOMScore ¶

func SetOOMScore(pid, score int) error

SetOOMScore sets the oom score for the provided pid

func SetSubreaper ¶

func SetSubreaper(i int) error

SetSubreaper sets the value i as the subreaper setting for the calling process

func StatAtime ¶

func StatAtime(st *syscall.Stat_t) syscall.Timespec

func StatCtime ¶

func StatCtime(st *syscall.Stat_t) syscall.Timespec

func StatMtime ¶

func StatMtime(st *syscall.Stat_t) syscall.Timespec

Types ¶

type Exit ¶

type Exit struct {
	Pid    int
	Status int
}

Exit is the wait4 information from an exited process

func Reap ¶

func Reap(wait bool) (exits []Exit, err error)

Reap reaps all child processes for the calling process and returns their exit information

Source Files ¶

epoll.go fds.go oom_unix.go prctl.go proc.go reaper.go socket_unix.go stat_unix.go