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// 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.
//go:build linux || netbsd
package os
import (
"errors"
"runtime"
)
func executable() (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"
}
path, err := Readlink(procfn)
// When the executable has been deleted then Readlink returns a
// path appended with " (deleted)".
return stringsTrimSuffix(path, " (deleted)"), err
}
// stringsTrimSuffix is the same as strings.TrimSuffix.
func stringsTrimSuffix(s, suffix string) string {
if len(s) >= len(suffix) && s[len(s)-len(suffix):] == suffix {
return s[:len(s)-len(suffix)]
}
return s
}
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