47 lines
1.3 KiB
Go
47 lines
1.3 KiB
Go
// Copyright 2018 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build linux
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package syserr
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import (
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"fmt"
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"syscall"
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)
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const maxErrno = 134
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type linuxHostTranslation struct {
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err *Error
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ok bool
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}
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var linuxHostTranslations [maxErrno]linuxHostTranslation
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// FromHost translates a syscall.Errno to a corresponding Error value.
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func FromHost(err syscall.Errno) *Error {
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if err < 0 || int(err) >= len(linuxHostTranslations) || !linuxHostTranslations[err].ok {
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panic(fmt.Sprintf("unknown host errno %q (%d)", err.Error(), err))
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}
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return linuxHostTranslations[err].err
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}
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func addLinuxHostTranslation(host syscall.Errno, trans *Error) {
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if linuxHostTranslations[host].ok {
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panic(fmt.Sprintf("duplicate translation for host errno %q (%d)", host.Error(), host))
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}
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linuxHostTranslations[host] = linuxHostTranslation{err: trans, ok: true}
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}
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