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Fixed some bugs in BREAK handling. If BRKINT is set, then always flush

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the queues and generate a SIGINT.  Previously, this wasn't done if ISIG
was clear or the VINTR character was disabled, and it was done by
converting the BREAK to a VINTR character and sometimes bogusly echoing
this character.

Found by:	NIST-PCTS
This commit is contained in:
Bruce Evans 1996-11-29 15:23:42 +00:00
parent c02039bc20
commit 7542ee31b8
1 changed files with 8 additions and 7 deletions
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15
sys/kern/tty.c
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@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)tty.c 8.8 (Berkeley) 1/21/94
* $Id: tty.c,v 1.84 1996/08/31 16:52:26 bde Exp $
* $Id: tty.c,v 1.85 1996/11/29 15:06:09 bde Exp $
*/
/*-
@ -326,14 +326,15 @@ ttyinput(c, tp)
err = (ISSET(c, TTY_ERRORMASK));
if (err) {
CLR(c, TTY_ERRORMASK);
if (ISSET(err, TTY_BI)) { /* Break. */
if (ISSET(err, TTY_BI)) {
if (ISSET(iflag, IGNBRK))
return (0);
else if (ISSET(iflag, BRKINT) &&
ISSET(lflag, ISIG) &&
(cc[VINTR] != _POSIX_VDISABLE))
c = cc[VINTR];
else if (ISSET(iflag, PARMRK))
if (ISSET(iflag, BRKINT)) {
ttyflush(tp, FREAD | FWRITE);
pgsignal(tp->t_pgrp, SIGINT, 1);
goto endcase;
}
if (ISSET(iflag, PARMRK))
goto parmrk;
} else if ((ISSET(err, TTY_PE) && ISSET(iflag, INPCK))
|| ISSET(err, TTY_FE)) {