3055fd53df
Implements streamign exec handling in both executors (i.e. universal and libcontainer). For creation of TTY, some incidental complexity leaked in. The universal executor uses github.com/kr/pty for creation of TTYs. On the other hand, libcontainer expects a console socket and for libcontainer to create the underlying console object on process start. The caller can then use `libcontainer.utils.RecvFd()` to get tty master end. I chose github.com/kr/pty for managing TTYs here. I tried `github.com/containerd/console` package (which is already imported), but the package did not work as expected on macOS.
44 lines
714 B
Go
44 lines
714 B
Go
// +build darwin dragonfly freebsd linux netbsd openbsd solaris
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package executor
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import (
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"fmt"
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"io"
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"os"
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"strings"
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"syscall"
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"github.com/kr/pty"
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"golang.org/x/sys/unix"
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)
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func sessionCmdAttr(tty *os.File) *syscall.SysProcAttr {
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return &syscall.SysProcAttr{
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Setsid: true,
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Setctty: true,
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Ctty: int(tty.Fd()),
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}
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}
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func setTTYSize(w io.Writer, height, width int32) error {
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f, ok := w.(*os.File)
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if !ok {
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return fmt.Errorf("attempted to resize a non-tty session")
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}
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return pty.Setsize(f, &pty.Winsize{
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Rows: uint16(height),
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Cols: uint16(width),
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})
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}
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func isUnixEIOErr(err error) bool {
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if err == nil {
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return false
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}
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return strings.Contains(err.Error(), unix.EIO.Error())
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}
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