libgo/go/os/proc.go

   1 // Copyright 2009 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 // Process etc.
   6
   7 package os
   8
   9 import (
  10         "runtime"
  11         "syscall"
  12 )
  13
  14 // Args hold the command-line arguments, starting with the program name.
  15 var Args []string
  16
  17 func init() {
  18         if runtime.GOOS == "windows" {
  19                 // Initialized in exec_windows.go.
  20                 return
  21         }
  22         Args = runtime_args()
  23 }
  24
  25 func runtime_args() []string // in package runtime
  26
  27 // Getuid returns the numeric user id of the caller.
  28 func Getuid() int { return syscall.Getuid() }
  29
  30 // Geteuid returns the numeric effective user id of the caller.
  31 func Geteuid() int { return syscall.Geteuid() }
  32
  33 // Getgid returns the numeric group id of the caller.
  34 func Getgid() int { return syscall.Getgid() }
  35
  36 // Getegid returns the numeric effective group id of the caller.
  37 func Getegid() int { return syscall.Getegid() }
  38
  39 // Getgroups returns a list of the numeric ids of groups that the caller belongs to.
  40 func Getgroups() ([]int, error) {
  41         gids, e := syscall.Getgroups()
  42         return gids, NewSyscallError("getgroups", e)
  43 }
  44
  45 // Exit causes the current program to exit with the given status code.
  46 // Conventionally, code zero indicates success, non-zero an error.
  47 // The program terminates immediately; deferred functions are not run.
  48 func Exit(code int) {
  49         if code == 0 {
  50                 // Give race detector a chance to fail the program.
  51                 // Racy programs do not have the right to finish successfully.
  52                 runtime_beforeExit()
  53         }
  54         syscall.Exit(code)
  55 }
  56
  57 func runtime_beforeExit() // implemented in runtime