mirror of https://github.com/docker/docs.git
33 lines
885 B
Go
33 lines
885 B
Go
package term
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import (
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"syscall"
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"unsafe"
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)
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const (
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getTermios = syscall.TIOCGETA
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setTermios = syscall.TIOCSETA
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)
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// MakeRaw put the terminal connected to the given file descriptor into raw
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// mode and returns the previous state of the terminal so that it can be
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// restored.
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func MakeRaw(fd int) (*State, error) {
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var oldState State
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if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), uintptr(getTermios), uintptr(unsafe.Pointer(&oldState.termios)), 0, 0, 0); err != 0 {
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return nil, err
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}
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newState := oldState.termios
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newState.Iflag &^= ISTRIP | INLCR | IGNCR | IXON | IXOFF
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newState.Iflag |= ICRNL
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newState.Oflag |= ONLCR
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newState.Lflag &^= ECHO | ICANON | ISIG
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if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), uintptr(setTermios), uintptr(unsafe.Pointer(&newState)), 0, 0, 0); err != 0 {
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return nil, err
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}
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return &oldState, nil
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}
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