system

Documentation

Index

• Constants
• func ClearKeepCaps() error
• func Execv(cmd string, args []string, env []string) error
• func GetClockTicks() int
• func GetProcessStartTime(pid int) (string, error)
• func Lgetxattr(path string, attr string) ([]byte, error)
• func Llistxattr(path string, dest []byte) (size int, err error)
• func Lsetxattr(path string, attr string, data []byte, flags int) error
• func Prctl(option int, arg2, arg3, arg4, arg5 uintptr) (err error)
• func Prlimit(pid, resource int, limit syscall.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 Setns(fd uintptr, flags uintptr) error
• func Setuid(uid int) (err error)
• func SysSetns() uint32
• type ParentDeathSignal
  • func GetParentDeathSignal() (ParentDeathSignal, error)
  • func (p ParentDeathSignal) Restore() error
  • func (p ParentDeathSignal) Set() error

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 GetProcessStartTime

func GetProcessStartTime(pid int) (string, error)

look in /proc to find the process start time so that we can verify that this pid has started after ourself

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 Llistxattr

func Llistxattr(path string, dest []byte) (size int, err error)

Returns the size of xattrs and nil error Requires path, takes allocated []byte or nil as last argument

func Lsetxattr

func Lsetxattr(path string, attr string, data []byte, flags int) error

func Prctl

func Prctl(option int, arg2, arg3, arg4, arg5 uintptr) (err error)

func Prlimit

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

func RunningInUserNS

func RunningInUserNS() bool

RunningInUserNS detects whether we are currently running in a user namespace. 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 Setns

func Setns(fd uintptr, flags uintptr) error

func Setuid

func Setuid(uid int) (err error)

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

func SysSetns

func SysSetns() uint32

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