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// +build windows 6 7// Package windows contains an interface to the low-level operating system 8// primitives. OS details vary depending on the underlying system, and 9// by default, godoc will display the OS-specific documentation for the current 10// system. If you want godoc to display syscall documentation for another 11// system, set $GOOS and $GOARCH to the desired system. For example, if 12// you want to view documentation for freebsd/arm on linux/amd64, set $GOOS 13// to freebsd and $GOARCH to arm. 14// 15// The primary use of this package is inside other packages that provide a more 16// portable interface to the system, such as "os", "time" and "net". Use 17// those packages rather than this one if you can. 18// 19// For details of the functions and data types in this package consult 20// the manuals for the appropriate operating system. 21// 22// These calls return err == nil to indicate success; otherwise 23// err represents an operating system error describing the failure and 24// holds a value of type syscall.Errno. 25package windows // import "golang.org/x/sys/windows" 26 27import ( 28 "syscall" 29) 30 31// ByteSliceFromString returns a NUL-terminated slice of bytes 32// containing the text of s. If s contains a NUL byte at any 33// location, it returns (nil, syscall.EINVAL). 34func ByteSliceFromString(s string) ([]byte, error) { 35 for i := 0; i < len(s); i++ { 36 if s[i] == 0 { 37 return nil, syscall.EINVAL 38 } 39 } 40 a := make([]byte, len(s)+1) 41 copy(a, s) 42 return a, nil 43} 44 45// BytePtrFromString returns a pointer to a NUL-terminated array of 46// bytes containing the text of s. If s contains a NUL byte at any 47// location, it returns (nil, syscall.EINVAL). 48func BytePtrFromString(s string) (*byte, error) { 49 a, err := ByteSliceFromString(s) 50 if err != nil { 51 return nil, err 52 } 53 return &a[0], nil 54} 55 56// Single-word zero for use when we need a valid pointer to 0 bytes. 57// See mksyscall.pl. 58var _zero uintptr 59 60func (ts *Timespec) Unix() (sec int64, nsec int64) { 61 return int64(ts.Sec), int64(ts.Nsec) 62} 63 64func (tv *Timeval) Unix() (sec int64, nsec int64) { 65 return int64(tv.Sec), int64(tv.Usec) * 1000 66} 67 68func (ts *Timespec) Nano() int64 { 69 return int64(ts.Sec)*1e9 + int64(ts.Nsec) 70} 71 72func (tv *Timeval) Nano() int64 { 73 return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000 74} 75