reexec

func Command ¶

func Command(args ...string) *exec.Cmd

Command returns *exec.Cmd which has Path as current binary. Also it setting SysProcAttr.Pdeathsig to SIGTERM. This will use the in-memory version (/proc/self/exe) of the current binary, it is thus safe to delete or replace the on-disk binary (os.Args[0]).

As SysProcAttr.Pdeathsig is set, the signal will be sent to the process when the OS thread which created the process dies. It is the caller's responsibility to ensure that the creating thread is not terminated prematurely. See https://go.dev/issue/27505 for more details.

func Init ¶

func Init() bool

Init is called as the first part of the exec process and returns true if an initialization function was called.

func Register ¶

func Register(name string, initializer func())

Register adds an initialization func under the specified name

func Self ¶

func Self() string

Self returns the path to the current process's binary. Returns "/proc/self/exe".