// +build linux
 // +build 386 arm

 package system
 
 import (

 	"golang.org/x/sys/unix"

 )
 
 // Setuid sets the uid of the calling thread to the specified uid.
 func Setuid(uid int) (err error) {

 	_, _, e1 := unix.RawSyscall(unix.SYS_SETUID32, uintptr(uid), 0, 0)

 	if e1 != 0 {
 		err = e1
 	}
 	return
 }
 
 // Setgid sets the gid of the calling thread to the specified gid.
 func Setgid(gid int) (err error) {

 	_, _, e1 := unix.RawSyscall(unix.SYS_SETGID32, uintptr(gid), 0, 0)

 	if e1 != 0 {
 		err = e1
 	}
 	return
 }