66ff12e5f7
* vendor: bump libcontainer and docker to remove Sirupsen imports * vendor: fix bad vendoring of archive package * vendor: fix api changes to cgroups in executor * vendor: fix docker api changes * vendor: update github.com/Azure/go-ansiterm to use non capitalized logrus import
34 lines
820 B
Go
34 lines
820 B
Go
package console
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import (
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"fmt"
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"os"
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"unsafe"
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"golang.org/x/sys/unix"
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)
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const (
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cmdTcGet = unix.TCGETS
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cmdTcSet = unix.TCSETS
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)
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// unlockpt unlocks the slave pseudoterminal device corresponding to the master pseudoterminal referred to by f.
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// unlockpt should be called before opening the slave side of a pty.
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func unlockpt(f *os.File) error {
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var u int32
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if _, _, err := unix.Syscall(unix.SYS_IOCTL, f.Fd(), unix.TIOCSPTLCK, uintptr(unsafe.Pointer(&u))); err != 0 {
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return err
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}
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return nil
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}
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// ptsname retrieves the name of the first available pts for the given master.
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func ptsname(f *os.File) (string, error) {
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var u uint32
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if _, _, err := unix.Syscall(unix.SYS_IOCTL, f.Fd(), unix.TIOCGPTN, uintptr(unsafe.Pointer(&u))); err != 0 {
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return "", err
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}
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return fmt.Sprintf("/dev/pts/%d", u), nil
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}
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