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// errstr.go -- Error strings.

// 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.

package syscall

//sysnb strerror_r(errnum int, buf []byte) (err error)

//strerror_r(errnum int, buf *byte, buflen Size_t) int

func Errstr(errnum int) string {

        for len := 128; ; len *= 2 {

                b := make([]byte, len)

                err := strerror_r(errnum, b)

                if err == nil {

                        i := 0

                        for b[i] != 0 {

                                i++

                        }

                        return string(b[:i])

                }

                if err != ERANGE {

                        return "Errstr failure"

                }

        }

}