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/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2019-2020 WireGuard LLC. All Rights Reserved.
*/
package manager
import (
"os"
"strconv"
"golang.org/x/sys/windows"
)
func makeInheritableAndGetStr(f *os.File) (str string, err error) {
sc, err := f.SyscallConn()
if err != nil {
return
}
err2 := sc.Control(func(fd uintptr) {
err = windows.SetHandleInformation(windows.Handle(fd), windows.HANDLE_FLAG_INHERIT, windows.HANDLE_FLAG_INHERIT)
str = strconv.FormatUint(uint64(fd), 10)
})
if err2 != nil {
err = err2
}
return
}
func inheritableEvents() (ourEvents *os.File, theirEvents *os.File, theirEventStr string, err error) {
theirEvents, ourEvents, err = os.Pipe()
if err != nil {
return
}
theirEventStr, err = makeInheritableAndGetStr(theirEvents)
if err != nil {
theirEvents.Close()
ourEvents.Close()
return
}
return
}
func inheritableSocketpairEmulation() (ourReader *os.File, theirReader *os.File, theirReaderStr string, ourWriter *os.File, theirWriter *os.File, theirWriterStr string, err error) {
ourReader, theirWriter, err = os.Pipe()
if err != nil {
return
}
theirWriterStr, err = makeInheritableAndGetStr(theirWriter)
if err != nil {
ourReader.Close()
theirWriter.Close()
return
}
theirReader, ourWriter, err = os.Pipe()
if err != nil {
ourReader.Close()
theirWriter.Close()
return
}
theirReaderStr, err = makeInheritableAndGetStr(theirReader)
if err != nil {
ourReader.Close()
theirWriter.Close()
theirReader.Close()
ourWriter.Close()
return
}
return
}
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