69 lines
1.1 KiB
Go
69 lines
1.1 KiB
Go
// +build !windows
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package main
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import (
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gocontext "context"
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"io"
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"os"
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"sync"
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"github.com/containerd/fifo"
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"golang.org/x/sys/unix"
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)
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func prepareStdio(stdin, stdout, stderr string, console bool) (wg *sync.WaitGroup, err error) {
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wg = &sync.WaitGroup{}
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ctx := gocontext.Background()
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f, err := fifo.OpenFifo(ctx, stdin, unix.O_WRONLY|unix.O_CREAT|unix.O_NONBLOCK, 0700)
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if err != nil {
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return nil, err
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}
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defer func(c io.Closer) {
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if err != nil {
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c.Close()
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}
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}(f)
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go func(w io.WriteCloser) {
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io.Copy(w, os.Stdin)
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w.Close()
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}(f)
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f, err = fifo.OpenFifo(ctx, stdout, unix.O_RDONLY|unix.O_CREAT|unix.O_NONBLOCK, 0700)
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if err != nil {
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return nil, err
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}
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defer func(c io.Closer) {
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if err != nil {
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c.Close()
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}
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}(f)
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wg.Add(1)
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go func(r io.ReadCloser) {
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io.Copy(os.Stdout, r)
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r.Close()
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wg.Done()
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}(f)
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f, err = fifo.OpenFifo(ctx, stderr, unix.O_RDONLY|unix.O_CREAT|unix.O_NONBLOCK, 0700)
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if err != nil {
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return nil, err
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}
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defer func(c io.Closer) {
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if err != nil {
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c.Close()
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}
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}(f)
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if !console {
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wg.Add(1)
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go func(r io.ReadCloser) {
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io.Copy(os.Stderr, r)
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r.Close()
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wg.Done()
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}(f)
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}
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return wg, nil
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}
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