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b87d025ac4
If we use a local type, it won't compare properly with errors from the rest of the standard library. Errors are the one type from syscall that propagates through the system, so it's important to have only one type for them. Will apply the corresponding change to the other packages once this is approved. Also delete some deprecated code. This is a new package; no need to carry the past. LGTM=rsc R=rsc CC=golang-codereviews https://golang.org/cl/126250043
68 lines
2.3 KiB
Go
68 lines
2.3 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build plan9
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// Package plan9 contains an interface to the low-level operating system
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// primitives. OS details vary depending on the underlying system, and
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// by default, godoc will display the OS-specific documentation for the current
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// system. If you want godoc to display documentation for another
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// system, set $GOOS and $GOARCH to the desired system. For example, if
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// you want to view documentation for freebsd/arm on linux/amd64, set $GOOS
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// to freebsd and $GOARCH to arm.
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// The primary use of this package is inside other packages that provide a more
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// portable interface to the system, such as "os", "time" and "net". Use
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// those packages rather than this one if you can.
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// For details of the functions and data types in this package consult
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// the manuals for the appropriate operating system.
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// These calls return err == nil to indicate success; otherwise
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// err represents an operating system error describing the failure and
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// holds a value of type syscall.ErrorString.
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package plan9
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// ByteSliceFromString returns a NUL-terminated slice of bytes
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// containing the text of s. If s contains a NUL byte at any
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// location, it returns (nil, EINVAL).
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func ByteSliceFromString(s string) ([]byte, error) {
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for i := 0; i < len(s); i++ {
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if s[i] == 0 {
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return nil, EINVAL
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}
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}
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a := make([]byte, len(s)+1)
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copy(a, s)
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return a, nil
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}
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// BytePtrFromString returns a pointer to a NUL-terminated array of
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// bytes containing the text of s. If s contains a NUL byte at any
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// location, it returns (nil, EINVAL).
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func BytePtrFromString(s string) (*byte, error) {
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a, err := ByteSliceFromString(s)
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if err != nil {
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return nil, err
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}
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return &a[0], nil
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}
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// Single-word zero for use when we need a valid pointer to 0 bytes.
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// See mksyscall.pl.
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var _zero uintptr
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func (ts *Timespec) Unix() (sec int64, nsec int64) {
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return int64(ts.Sec), int64(ts.Nsec)
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}
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func (tv *Timeval) Unix() (sec int64, nsec int64) {
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return int64(tv.Sec), int64(tv.Usec) * 1000
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}
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func (ts *Timespec) Nano() int64 {
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return int64(ts.Sec)*1e9 + int64(ts.Nsec)
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}
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func (tv *Timeval) Nano() int64 {
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return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000
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}
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