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.
5 // +build darwin dragonfly freebsd linux netbsd openbsd solaris
7 // Package unix 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 OS-specific documentation for the current
10 // system. If you want godoc to display OS 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 // The primary use of this package is inside other packages that provide a more
15 // portable interface to the system, such as "os", "time" and "net". Use
16 // those packages rather than this one if you can.
17 // For details of the functions and data types in this package consult
18 // the manuals for the appropriate operating system.
19 // These calls return err == nil to indicate success; otherwise
20 // err represents an operating system error describing the failure and
21 // holds a value of type syscall.Errno.
22 package unix // import "golang.org/x/sys/unix"
24 // ByteSliceFromString returns a NUL-terminated slice of bytes
25 // containing the text of s. If s contains a NUL byte at any
26 // location, it returns (nil, EINVAL).
27 func ByteSliceFromString(s string) ([]byte, error) {
28 for i := 0; i < len(s); i++ {
33 a := make([]byte, len(s)+1)
38 // BytePtrFromString returns a pointer to a NUL-terminated array of
39 // bytes containing the text of s. If s contains a NUL byte at any
40 // location, it returns (nil, EINVAL).
41 func BytePtrFromString(s string) (*byte, error) {
42 a, err := ByteSliceFromString(s)
49 // Single-word zero for use when we need a valid pointer to 0 bytes.
53 func (ts *Timespec) Unix() (sec int64, nsec int64) {
54 return int64(ts.Sec), int64(ts.Nsec)
57 func (tv *Timeval) Unix() (sec int64, nsec int64) {
58 return int64(tv.Sec), int64(tv.Usec) * 1000
61 func (ts *Timespec) Nano() int64 {
62 return int64(ts.Sec)*1e9 + int64(ts.Nsec)
65 func (tv *Timeval) Nano() int64 {
66 return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000
69 func TimevalToNsec(tv Timeval) int64 { return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3 }