33 lines
765 B
Go
33 lines
765 B
Go
// 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 Errno)
|
|
//strerror_r(errnum _C_int, buf *byte, buflen Size_t) _C_int
|
|
|
|
func Errstr(errnum int) string {
|
|
for len := 128; ; len *= 2 {
|
|
b := make([]byte, len)
|
|
errno := strerror_r(errnum, b)
|
|
if errno == 0 {
|
|
i := 0
|
|
for b[i] != 0 {
|
|
i++
|
|
}
|
|
// Lowercase first letter: Bad -> bad, but
|
|
// STREAM -> STREAM.
|
|
if i > 1 && 'A' <= b[0] && b[0] <= 'Z' && 'a' <= b[1] && b[1] <= 'z' {
|
|
b[0] += 'a' - 'A'
|
|
}
|
|
return string(b[:i])
|
|
}
|
|
if errno != ERANGE {
|
|
return "errstr failure"
|
|
}
|
|
}
|
|
}
|