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moby--moby/term/termios_linux.go

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package term
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import (
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"syscall"
"unsafe"
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)
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// #include <termios.h>
// #include <sys/ioctl.h>
/*
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void MakeRaw(int fd) {
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struct termios t;
// FIXME: Handle errors?
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ioctl(fd, TCGETS, &t);
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t.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
t.c_oflag &= ~OPOST;
t.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN | ISIG);
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t.c_cflag &= ~(CSIZE | PARENB);
t.c_cflag |= CS8;
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ioctl(fd, TCSETS, &t);
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}
*/
import "C"
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const (
getTermios = syscall.TCGETS
setTermios = syscall.TCSETS
)
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// MakeRaw put the terminal connected to the given file descriptor into raw
// mode and returns the previous state of the terminal so that it can be
// restored.
func MakeRaw(fd int) (*State, error) {
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var oldState State
if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(fd), syscall.TCGETS, uintptr(unsafe.Pointer(&oldState.termios)), 0, 0, 0); err != 0 {
return nil, err
}
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C.MakeRaw(C.int(fd))
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return &oldState, nil
// FIXME: post on goland issues this: very same as the C function bug non-working
// newState := oldState.termios
// newState.Iflag &^= (IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON)
// newState.Oflag &^= OPOST
// newState.Lflag &^= (ECHO | syscall.ECHONL | ICANON | ISIG | IEXTEN)
// newState.Cflag &^= (CSIZE | syscall.PARENB)
// newState.Cflag |= CS8
// if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), syscall.TCSETS, uintptr(unsafe.Pointer(&newState))); err != 0 {
// return nil, err
// }
// return &oldState, nil
}