970b8d61a7
This brings in a fix for a cgroups setup race condition that we hit sometimes in the tests. Signed-off-by: Mrunal Patel <mrunalp@gmail.com>
37 lines
845 B
Go
37 lines
845 B
Go
package console
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"unsafe"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
const (
|
|
cmdTcGet = unix.TCGETS
|
|
cmdTcSet = unix.TCSETS
|
|
)
|
|
|
|
func ioctl(fd, flag, data uintptr) error {
|
|
if _, _, err := unix.Syscall(unix.SYS_IOCTL, fd, flag, data); err != 0 {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// unlockpt unlocks the slave pseudoterminal device corresponding to the master pseudoterminal referred to by f.
|
|
// unlockpt should be called before opening the slave side of a pty.
|
|
func unlockpt(f *os.File) error {
|
|
var u int32
|
|
return ioctl(f.Fd(), unix.TIOCSPTLCK, uintptr(unsafe.Pointer(&u)))
|
|
}
|
|
|
|
// ptsname retrieves the name of the first available pts for the given master.
|
|
func ptsname(f *os.File) (string, error) {
|
|
n, err := unix.IoctlGetInt(int(f.Fd()), unix.TIOCGPTN)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return fmt.Sprintf("/dev/pts/%d", n), nil
|
|
}
|