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 7package os 8 9import ( 10 "runtime" 11 "syscall" 12) 13 14// Args hold the command-line arguments, starting with the program name. 15var Args []string 16 17func init() { 18 if runtime.GOOS == "windows" { 19 // Initialized in exec_windows.go. 20 return 21 } 22 Args = runtime_args() 23} 24 25func runtime_args() []string // in package runtime 26 27// Getuid returns the numeric user id of the caller. 28// 29// On Windows, it returns -1. 30func Getuid() int { return syscall.Getuid() } 31 32// Geteuid returns the numeric effective user id of the caller. 33// 34// On Windows, it returns -1. 35func Geteuid() int { return syscall.Geteuid() } 36 37// Getgid returns the numeric group id of the caller. 38// 39// On Windows, it returns -1. 40func Getgid() int { return syscall.Getgid() } 41 42// Getegid returns the numeric effective group id of the caller. 43// 44// On Windows, it returns -1. 45func Getegid() int { return syscall.Getegid() } 46 47// Getgroups returns a list of the numeric ids of groups that the caller belongs to. 48// 49// On Windows, it returns syscall.EWINDOWS. See the os/user package 50// for a possible alternative. 51func Getgroups() ([]int, error) { 52 gids, e := syscall.Getgroups() 53 return gids, NewSyscallError("getgroups", e) 54} 55 56// Exit causes the current program to exit with the given status code. 57// Conventionally, code zero indicates success, non-zero an error. 58// The program terminates immediately; deferred functions are not run. 59func Exit(code int) { 60 if code == 0 { 61 // Give race detector a chance to fail the program. 62 // Racy programs do not have the right to finish successfully. 63 runtime_beforeExit() 64 } 65 syscall.Exit(code) 66} 67 68func runtime_beforeExit() // implemented in runtime 69