mirror of
https://github.com/freebsd/freebsd-src
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65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
/* $OpenBSD: tty.c,v 1.3 2015/09/05 09:49:24 jsg Exp $ */
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/*
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* Copyright (c) 2013, Otto Moerbeek <otto@drijf.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <errno.h>
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#include <signal.h>
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#include <histedit.h>
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#include <termios.h>
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#include "extern.h"
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struct termios ttysaved, ttyedit;
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static int
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settty(struct termios *t)
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{
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int ret;
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while ((ret = tcsetattr(0, TCSADRAIN, t)) == -1 && errno == EINTR)
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continue;
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return ret;
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}
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int
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gettty(struct termios *t)
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{
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int ret;
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while ((ret = tcgetattr(0, t)) == -1 && errno == EINTR)
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continue;
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return ret;
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}
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/* ARGSUSED */
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void
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tstpcont(int sig)
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{
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int save_errno = errno;
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if (sig == SIGTSTP) {
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signal(SIGCONT, tstpcont);
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gettty(&ttyedit);
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settty(&ttysaved);
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} else {
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signal(SIGTSTP, tstpcont);
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settty(&ttyedit);
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}
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signal(sig, SIG_DFL);
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kill(0, sig);
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errno = save_errno;
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}
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