4321f202f9
Loosely based on a patch by Svante Signell.
Reviewed-on: https://go-review.googlesource.com/c/161518
From-SVN: r268603
34 lines
917 B
Go
34 lines
917 B
Go
// errstr_glibc.go -- GNU/Linux and GNU/Hurd specific error strings.
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// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// We use this rather than errstr.go because on GNU/Linux sterror_r
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// returns a pointer to the error message, and may not use buf at all.
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// +build hurd linux
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package syscall
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import "unsafe"
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//sysnb strerror_r(errnum int, b []byte) (errstr *byte)
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//strerror_r(errnum _C_int, b *byte, len Size_t) *byte
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func Errstr(errnum int) string {
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a := make([]byte, 128)
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p := strerror_r(errnum, a)
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b := (*[1000]byte)(unsafe.Pointer(p))
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i := 0
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for b[i] != 0 {
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i++
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}
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// Lowercase first letter: Bad -> bad, but STREAM -> STREAM.
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if i > 1 && 'A' <= b[0] && b[0] <= 'Z' && 'a' <= b[1] && b[1] <= 'z' {
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c := b[0] + 'a' - 'A'
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return string(c) + string(b[1:i])
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}
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return string(b[:i])
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}
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