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crypto/rand: enable rand.Reader on plan9

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R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6297044
This commit is contained in:
Markus Sonderegger 2012-06-06 16:05:47 -04:00 committed by Russ Cox
parent fe80cf0f15
commit 3476c23124
1 changed files with 15 additions and 5 deletions
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20
src/pkg/crypto/rand/rand_unix.go
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin freebsd linux netbsd openbsd
// +build darwin freebsd linux netbsd openbsd plan9
// Unix cryptographically secure pseudorandom number
// generator.
@ -15,6 +15,7 @@ import (
"crypto/cipher"
"io"
"os"
"runtime"
"sync"
"time"
)
@ -22,7 +23,13 @@ import (
// Easy implementation: read from /dev/urandom.
// This is sufficient on Linux, OS X, and FreeBSD.
func init() { Reader = &devReader{name: "/dev/urandom"} }
func init() {
if runtime.GOOS == "plan9" {
Reader = newReader(nil)
} else {
Reader = &devReader{name: "/dev/urandom"}
}
}
// A devReader satisfies reads by reading the file named name.
type devReader struct {
@ -39,14 +46,17 @@ func (r *devReader) Read(b []byte) (n int, err error) {
if f == nil {
return 0, err
}
r.f = bufio.NewReader(f)
if runtime.GOOS == "plan9" {
r.f = f
} else {
r.f = bufio.NewReader(f)
}
}
return r.f.Read(b)
}
// Alternate pseudo-random implementation for use on
// systems without a reliable /dev/urandom. So far we
// haven't needed it.
// systems without a reliable /dev/urandom.
// newReader returns a new pseudorandom generator that
// seeds itself by reading from entropy. If entropy == nil,