[unix-history] / usr / src / usr.bin / tset / reset.c

static char *sccsid = "@(#)reset.c	4.1 (Berkeley) %G%";
/*
 * reset - set the teletype mode bits to be sensible
 *
 * Kurt Shoens
 *
 * Very useful after crapping out in raw.
 * Modified by Mark Horton to know about tchars
 * and to not mess with peoples chars unless they are null.
 */
#include <sgtty.h>
#define chk(val, dft) (val==0 ? dft : val)

main()
{
	struct sgttyb buf;
	struct tchars tbuf;

	gtty(2, &buf);
	ioctl(2, TIOCGETC, &tbuf);
	buf.sg_flags &= ~(RAW|CBREAK|VTDELAY|ALLDELAY);
	buf.sg_flags |= XTABS|ECHO|CRMOD|ANYP;
	buf.sg_erase = chk(buf.sg_erase, '\08');	/* ^H */
	buf.sg_kill = chk(buf.sg_kill, '\30');		/* ^X */
	tbuf.t_intrc = chk(tbuf.t_intrc, '\177');	/* ^? */
	tbuf.t_quitc = chk(tbuf.t_quitc, '\34');	/* ^\ */
	tbuf.t_startc = chk(tbuf.t_startc, '\22');	/* ^Q */
	tbuf.t_stopc = chk(tbuf.t_stopc, '\24');	/* ^S */
	tbuf.t_eofc = chk(tbuf.t_eofc, '\4');		/* ^D */
	/* brkc is left alone */
	ioctl(2, TIOCSETN, &buf);
	ioctl(2, TIOCSETC, &tbuf);
}
Commit	Line	Data
2b7ef025 BJ	1	static char *sccsid = "@(#)reset.c 4.1 (Berkeley) %G%";
	2	/*
	3	* reset - set the teletype mode bits to be sensible
	4	*
	5	* Kurt Shoens
	6	*
	7	* Very useful after crapping out in raw.
	8	* Modified by Mark Horton to know about tchars
	9	* and to not mess with peoples chars unless they are null.
	10	*/
	11	#include <sgtty.h>
	12	#define chk(val, dft) (val==0 ? dft : val)
	13
	14	main()
	15	{
	16	struct sgttyb buf;
	17	struct tchars tbuf;
	18
	19	gtty(2, &buf);
	20	ioctl(2, TIOCGETC, &tbuf);
	21	buf.sg_flags &= ~(RAW\|CBREAK\|VTDELAY\|ALLDELAY);
	22	buf.sg_flags \|= XTABS\|ECHO\|CRMOD\|ANYP;
	23	buf.sg_erase = chk(buf.sg_erase, '\08'); /* ^H */
	24	buf.sg_kill = chk(buf.sg_kill, '\30'); /* ^X */
	25	tbuf.t_intrc = chk(tbuf.t_intrc, '\177'); /* ^? */
	26	tbuf.t_quitc = chk(tbuf.t_quitc, '\34'); /* ^\ */
	27	tbuf.t_startc = chk(tbuf.t_startc, '\22'); /* ^Q */
	28	tbuf.t_stopc = chk(tbuf.t_stopc, '\24'); /* ^S */
	29	tbuf.t_eofc = chk(tbuf.t_eofc, '\4'); /* ^D */
	30	/* brkc is left alone */
	31	ioctl(2, TIOCSETN, &buf);
	32	ioctl(2, TIOCSETC, &tbuf);
	33	}