| // 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. |
| |
| //go:build !hurd && !linux |
| // +build !hurd,!linux |
| |
| 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" |
| } |
| } |
| } |