70 lines
2.4 KiB
Go
70 lines
2.4 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// +build darwin dragonfly freebsd linux netbsd openbsd solaris
|
|
|
|
// Package unix contains an interface to the low-level operating system
|
|
// primitives. OS details vary depending on the underlying system, and
|
|
// by default, godoc will display OS-specific documentation for the current
|
|
// system. If you want godoc to display OS documentation for another
|
|
// system, set $GOOS and $GOARCH to the desired system. For example, if
|
|
// you want to view documentation for freebsd/arm on linux/amd64, set $GOOS
|
|
// to freebsd and $GOARCH to arm.
|
|
// The primary use of this package is inside other packages that provide a more
|
|
// portable interface to the system, such as "os", "time" and "net". Use
|
|
// those packages rather than this one if you can.
|
|
// For details of the functions and data types in this package consult
|
|
// the manuals for the appropriate operating system.
|
|
// These calls return err == nil to indicate success; otherwise
|
|
// err represents an operating system error describing the failure and
|
|
// holds a value of type syscall.Errno.
|
|
package unix // import "golang.org/x/sys/unix"
|
|
|
|
// ByteSliceFromString returns a NUL-terminated slice of bytes
|
|
// containing the text of s. If s contains a NUL byte at any
|
|
// location, it returns (nil, EINVAL).
|
|
func ByteSliceFromString(s string) ([]byte, error) {
|
|
for i := 0; i < len(s); i++ {
|
|
if s[i] == 0 {
|
|
return nil, EINVAL
|
|
}
|
|
}
|
|
a := make([]byte, len(s)+1)
|
|
copy(a, s)
|
|
return a, nil
|
|
}
|
|
|
|
// BytePtrFromString returns a pointer to a NUL-terminated array of
|
|
// bytes containing the text of s. If s contains a NUL byte at any
|
|
// location, it returns (nil, EINVAL).
|
|
func BytePtrFromString(s string) (*byte, error) {
|
|
a, err := ByteSliceFromString(s)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &a[0], nil
|
|
}
|
|
|
|
// Single-word zero for use when we need a valid pointer to 0 bytes.
|
|
// See mkunix.pl.
|
|
var _zero uintptr
|
|
|
|
func (ts *Timespec) Unix() (sec int64, nsec int64) {
|
|
return int64(ts.Sec), int64(ts.Nsec)
|
|
}
|
|
|
|
func (tv *Timeval) Unix() (sec int64, nsec int64) {
|
|
return int64(tv.Sec), int64(tv.Usec) * 1000
|
|
}
|
|
|
|
func (ts *Timespec) Nano() int64 {
|
|
return int64(ts.Sec)*1e9 + int64(ts.Nsec)
|
|
}
|
|
|
|
func (tv *Timeval) Nano() int64 {
|
|
return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000
|
|
}
|
|
|
|
func TimevalToNsec(tv Timeval) int64 { return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3 }
|