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go/src/os/executable_procfs.go
Ian Lance Taylor c60d6c0b43 os: on OpenBSD implement Executable using Args[0]
OpenBSD no longer has procfs.

Based on a patch by Matthieu Sarter.

Fixes #19453.

Change-Id: Ia09d16f8a1cbef2f8cc1c5f49e9c61ec7d026a40
Reviewed-on: https://go-review.googlesource.com/46004
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-06-17 03:32:59 +00:00

35 lines
865 B
Go

// Copyright 2016 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 linux netbsd dragonfly nacl
package os
import (
"errors"
"runtime"
)
// We query the executable path at init time to avoid the problem of
// readlink returns a path appended with " (deleted)" when the original
// binary gets deleted.
var executablePath, executablePathErr = func() (string, error) {
var procfn string
switch runtime.GOOS {
default:
return "", errors.New("Executable not implemented for " + runtime.GOOS)
case "linux", "android":
procfn = "/proc/self/exe"
case "netbsd":
procfn = "/proc/curproc/exe"
case "dragonfly":
procfn = "/proc/curproc/file"
}
return Readlink(procfn)
}()
func executable() (string, error) {
return executablePath, executablePathErr
}