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 // 29 // On Windows, it returns -1. 30 func Getuid() int { return syscall.Getuid() } 31 32 // Geteuid returns the numeric effective user id of the caller. 33 // 34 // On Windows, it returns -1. 35 func Geteuid() int { return syscall.Geteuid() } 36 37 // Getgid returns the numeric group id of the caller. 38 // 39 // On Windows, it returns -1. 40 func Getgid() int { return syscall.Getgid() } 41 42 // Getegid returns the numeric effective group id of the caller. 43 // 44 // On Windows, it returns -1. 45 func 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. 51 func 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. 59 // 60 // For portability, the status code should be in the range [0, 125]. 61 func Exit(code int) { 62 if code == 0 { 63 // Give race detector a chance to fail the program. 64 // Racy programs do not have the right to finish successfully. 65 runtime_beforeExit() 66 } 67 syscall.Exit(code) 68 } 69 70 func runtime_beforeExit() // implemented in runtime 71