package system

import "github.com/opencontainers/runc/libcontainer/system"

Index ¶

• Constants
• func ClearKeepCaps() error
• func Execv(cmd string, args []string, env []string) error
• func GetClockTicks() int
• func GetParentNSeuid() int64
• func GetProcessStartTime(pid int) (string, error)
• func GetSubreaper() (int, error)
• func Lgetxattr(path string, attr string) ([]byte, error)
• func Prlimit(pid, resource int, limit unix.Rlimit) error
• func RunningInUserNS() bool
• func SetKeepCaps() error
• func SetParentDeathSignal(sig uintptr) error
• func SetSubreaper(i int) error
• func Setctty() error
• func Setgid(gid int) (err error)
• func Setuid(uid int) (err error)
• func UIDMapInUserNS(uidmap []user.IDMap) bool
• type ParentDeathSignal
• func GetParentDeathSignal() (ParentDeathSignal, error)
• func (p ParentDeathSignal) Restore() error
• func (p ParentDeathSignal) Set() error
• type Stat_t
• func Stat(pid int) (stat Stat_t, err error)
• type State
• func (s State) String() string

Constants ¶

const PR_SET_CHILD_SUBREAPER = 36

If arg2 is nonzero, set the "child subreaper" attribute of the calling process; if arg2 is zero, unset the attribute. When a process is marked as a child subreaper, all of the children that it creates, and their descendants, will be marked as having a subreaper. In effect, a subreaper fulfills the role of init(1) for its descendant processes. Upon termination of a process that is orphaned (i.e., its immediate parent has already terminated) and marked as having a subreaper, the nearest still living ancestor subreaper will receive a SIGCHLD signal and be able to wait(2) on the process to discover its termination status.

Functions ¶

func ClearKeepCaps ¶

func ClearKeepCaps() error

func Execv ¶

func Execv(cmd string, args []string, env []string) error

func GetClockTicks ¶

func GetClockTicks() int

func GetParentNSeuid ¶

func GetParentNSeuid() int64

GetParentNSeuid returns the euid within the parent user namespace

func GetProcessStartTime ¶

func GetProcessStartTime(pid int) (string, error)

GetProcessStartTime is deprecated. Use Stat(pid) and Stat_t.StartTime instead.

func GetSubreaper ¶

func GetSubreaper() (int, error)

GetSubreaper returns the subreaper setting for the calling process

func Lgetxattr ¶

func Lgetxattr(path string, attr string) ([]byte, error)

Returns a []byte slice if the xattr is set and nil otherwise Requires path and its attribute as arguments

func Prlimit ¶

func Prlimit(pid, resource int, limit unix.Rlimit) error

func RunningInUserNS ¶

func RunningInUserNS() bool

RunningInUserNS detects whether we are currently running in a user namespace. Originally copied from github.com/lxc/lxd/shared/util.go

func SetKeepCaps ¶

func SetKeepCaps() error

func SetParentDeathSignal ¶

func SetParentDeathSignal(sig uintptr) error

func SetSubreaper ¶

func SetSubreaper(i int) error

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

func Setctty ¶

func Setctty() error

func Setgid ¶

func Setgid(gid int) (err error)

Setgid sets the gid of the calling thread to the specified gid.

func Setuid ¶

func Setuid(uid int) (err error)

Setuid sets the uid of the calling thread to the specified uid.

func UIDMapInUserNS ¶

func UIDMapInUserNS(uidmap []user.IDMap) bool

Types ¶

type ParentDeathSignal ¶

type ParentDeathSignal int

func GetParentDeathSignal ¶

func GetParentDeathSignal() (ParentDeathSignal, error)

func (ParentDeathSignal) Restore ¶

func (p ParentDeathSignal) Restore() error

func (ParentDeathSignal) Set ¶

func (p ParentDeathSignal) Set() error

type Stat_t ¶

type Stat_t struct {
	// PID is the process ID.
	PID uint

	// Name is the command run by the process.
	Name string

	// State is the state of the process.
	State State

	// StartTime is the number of clock ticks after system boot (since
	// Linux 2.6).
	StartTime uint64
}

Stat_t represents the information from /proc/[pid]/stat, as described in proc(5) with names based on the /proc/[pid]/status fields.

func Stat ¶

func Stat(pid int) (stat Stat_t, err error)

Stat returns a Stat_t instance for the specified process.

type State ¶

type State rune

State is the status of a process.

const (
	Dead        State = 'X'
	DiskSleep   State = 'D'
	Running     State = 'R'
	Sleeping    State = 'S'
	Stopped     State = 'T'
	TracingStop State = 't'
	Zombie      State = 'Z'
)

func (State) String ¶

func (s State) String() string

String forms of the state from proc(5)'s documentation for /proc/[pid]/status' "State" field.

Source Files ¶

linux.go proc.go syscall_linux_64.go sysconfig.go xattrs_linux.go