mirror of
https://github.com/netbirdio/gvisor.git
synced 2026-05-22 17:12:49 -07:00
Ayush Ranjan
9d41ac1ff0
unix.Errno is of type `uintptr`, which is an unsigned integer. It was being casted to `int`, which is a signed integer of the same size. This cast could overflow due to unsigned -> signed. Reported-by: syzbot+08e5bf6f25d7db4316b9@syzkaller.appspotmail.com PiperOrigin-RevId: 680668525
45 lines
1.2 KiB
Go
45 lines
1.2 KiB
Go
// Copyright 2021 The gVisor Authors.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
//go:build darwin
|
|
// +build darwin
|
|
|
|
package syserr
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
const maxErrno = 107
|
|
|
|
var darwinHostTranslations [maxErrno]*Error
|
|
|
|
func getHostTranslation(err unix.Errno) *Error {
|
|
if uint64(err) >= uint64(len(darwinHostTranslations)) {
|
|
return nil
|
|
}
|
|
return darwinHostTranslations[err]
|
|
}
|
|
|
|
// TODO(gvisor.dev/issue/1270): We currently only add translations for errors
|
|
// that exist both on Darwin and Linux.
|
|
func addHostTranslation(host unix.Errno, trans *Error) {
|
|
if darwinHostTranslations[host] != nil {
|
|
panic(fmt.Sprintf("duplicate translation for host errno %q (%d)", host.Error(), host))
|
|
}
|
|
darwinHostTranslations[host] = trans
|
|
}
|