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/*
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 * turn raw (no echo, etc.) on and off.
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 * ptyfs is gone, so don't even try tcsetattr, etc.
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 */
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#define _POSIX_SOURCE
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#define _RESEARCH_SOURCE
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#include <sys/types.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <libv.h>
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static int ctlfd = -1;
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/* fd is ignored */
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tty_echooff(int)
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{
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	if(ctlfd >= 0)
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		return 0;
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	ctlfd = open("/dev/consctl", O_WRONLY);
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	if(ctlfd < 0)
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		return -1;
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	write(ctlfd, "rawon", 5);
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	return 0;
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}
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tty_echoon(int)
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{
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	if(ctlfd >= 0){
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		write(ctlfd, "rawoff", 6);
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		close(ctlfd);
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		ctlfd = -1;
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		return 0;
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	}
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	return -1;
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}