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38 lines
892 B
Go
38 lines
892 B
Go
//go:build windows
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package util
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import (
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"log"
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"os"
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"syscall"
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)
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var (
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kernel32 = syscall.MustLoadDLL("kernel32.dll")
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procSetStdHandle = kernel32.MustFindProc("SetStdHandle")
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)
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func setStdHandle(stdhandle int32, handle syscall.Handle) error {
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r0, _, e1 := syscall.Syscall(procSetStdHandle.Addr(), 2, uintptr(stdhandle), uintptr(handle), 0)
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if r0 == 0 {
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if e1 != 0 {
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return error(e1)
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}
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return syscall.EINVAL
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}
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return nil
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}
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// redirectStderr to the file passed in
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func init() {
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logFile, err := os.OpenFile("./fatal.log", os.O_CREATE|os.O_APPEND|os.O_RDWR, 0666)
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err = setStdHandle(syscall.STD_ERROR_HANDLE, syscall.Handle(logFile.Fd()))
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if err != nil {
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log.Fatalf("Failed to redirect stderr to file: %v", err)
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}
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// SetStdHandle does not affect prior references to stderr
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os.Stderr = logFile
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os.Stderr.WriteString("\n--------------------------------\n")
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}
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