1994-05-27 05:00:24 +00:00
|
|
|
/*-
|
|
|
|
* Copyright (c) 1992, 1993
|
|
|
|
* The Regents of the University of California. All rights reserved.
|
|
|
|
*
|
|
|
|
* This code is derived from software contributed to Berkeley by
|
|
|
|
* Christos Zoulas of Cornell University.
|
|
|
|
*
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
* modification, are permitted provided that the following conditions
|
|
|
|
* are met:
|
|
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer.
|
|
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
|
|
* documentation and/or other materials provided with the distribution.
|
|
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
|
|
* must display the following acknowledgement:
|
|
|
|
* This product includes software developed by the University of
|
|
|
|
* California, Berkeley and its contributors.
|
|
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
|
|
* may be used to endorse or promote products derived from this software
|
|
|
|
* without specific prior written permission.
|
|
|
|
*
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
|
|
* SUCH DAMAGE.
|
|
|
|
*/
|
|
|
|
|
2001-09-30 21:21:36 +00:00
|
|
|
#include <sys/cdefs.h>
|
|
|
|
__FBSDID("$FreeBSD$");
|
1994-05-27 05:00:24 +00:00
|
|
|
#if !defined(lint) && !defined(SCCSID)
|
|
|
|
static char sccsid[] = "@(#)sig.c 8.1 (Berkeley) 6/4/93";
|
|
|
|
#endif /* not lint && not SCCSID */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* sig.c: Signal handling stuff.
|
|
|
|
* our policy is to trap all signals, set a good state
|
|
|
|
* and pass the ball to our caller.
|
|
|
|
*/
|
|
|
|
#include "sys.h"
|
|
|
|
#include "el.h"
|
|
|
|
#include <stdlib.h>
|
|
|
|
|
|
|
|
private EditLine *sel = NULL;
|
|
|
|
|
|
|
|
private int sighdl[] = {
|
|
|
|
#define _DO(a) (a),
|
|
|
|
ALLSIGS
|
|
|
|
#undef _DO
|
|
|
|
-1
|
|
|
|
};
|
|
|
|
|
|
|
|
private void sig_handler __P((int));
|
|
|
|
|
|
|
|
/* sig_handler():
|
|
|
|
* This is the handler called for all signals
|
|
|
|
* XXX: we cannot pass any data so we just store the old editline
|
|
|
|
* state in a private variable
|
|
|
|
*/
|
|
|
|
private void
|
|
|
|
sig_handler(signo)
|
|
|
|
int signo;
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
sigset_t nset, oset;
|
|
|
|
|
|
|
|
(void) sigemptyset(&nset);
|
|
|
|
(void) sigaddset(&nset, signo);
|
|
|
|
(void) sigprocmask(SIG_BLOCK, &nset, &oset);
|
|
|
|
|
|
|
|
switch (signo) {
|
|
|
|
case SIGCONT:
|
|
|
|
tty_rawmode(sel);
|
|
|
|
if (ed_redisplay(sel, 0) == CC_REFRESH)
|
|
|
|
re_refresh(sel);
|
|
|
|
term__flush();
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SIGWINCH:
|
|
|
|
el_resize(sel);
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
tty_cookedmode(sel);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
1995-05-30 05:51:47 +00:00
|
|
|
for (i = 0; sighdl[i] != -1; i++)
|
1994-05-27 05:00:24 +00:00
|
|
|
if (signo == sighdl[i])
|
|
|
|
break;
|
|
|
|
|
|
|
|
(void) signal(signo, sel->el_signal[i]);
|
|
|
|
(void) sigprocmask(SIG_SETMASK, &oset, NULL);
|
|
|
|
(void) kill(0, signo);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* sig_init():
|
|
|
|
* Initialize all signal stuff
|
|
|
|
*/
|
|
|
|
protected int
|
|
|
|
sig_init(el)
|
|
|
|
EditLine *el;
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
sigset_t nset, oset;
|
|
|
|
|
|
|
|
(void) sigemptyset(&nset);
|
2000-07-26 23:46:28 +00:00
|
|
|
#define _DO(a) (void) sigaddset(&nset, a);
|
1994-05-27 05:00:24 +00:00
|
|
|
ALLSIGS
|
|
|
|
#undef _DO
|
|
|
|
(void) sigprocmask(SIG_BLOCK, &nset, &oset);
|
|
|
|
|
|
|
|
#define SIGSIZE (sizeof(sighdl) / sizeof(sighdl[0]) * sizeof(sig_t))
|
|
|
|
|
|
|
|
el->el_signal = (sig_t *) el_malloc(SIGSIZE);
|
1995-05-30 05:51:47 +00:00
|
|
|
for (i = 0; sighdl[i] != -1; i++)
|
1997-06-25 08:14:24 +00:00
|
|
|
el->el_signal[i] = SIG_ERR;
|
1994-05-27 05:00:24 +00:00
|
|
|
|
|
|
|
(void) sigprocmask(SIG_SETMASK, &oset, NULL);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* sig_end():
|
|
|
|
* Clear all signal stuff
|
|
|
|
*/
|
|
|
|
protected void
|
|
|
|
sig_end(el)
|
|
|
|
EditLine *el;
|
|
|
|
{
|
|
|
|
el_free((ptr_t) el->el_signal);
|
|
|
|
el->el_signal = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* sig_set():
|
|
|
|
* set all the signal handlers
|
|
|
|
*/
|
|
|
|
protected void
|
|
|
|
sig_set(el)
|
|
|
|
EditLine *el;
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
sigset_t nset, oset;
|
|
|
|
|
|
|
|
(void) sigemptyset(&nset);
|
2000-07-26 23:46:28 +00:00
|
|
|
#define _DO(a) (void) sigaddset(&nset, a);
|
1994-05-27 05:00:24 +00:00
|
|
|
ALLSIGS
|
|
|
|
#undef _DO
|
|
|
|
(void) sigprocmask(SIG_BLOCK, &nset, &oset);
|
|
|
|
|
|
|
|
for (i = 0; sighdl[i] != -1; i++) {
|
|
|
|
sig_t s;
|
|
|
|
/* This could happen if we get interrupted */
|
|
|
|
if ((s = signal(sighdl[i], sig_handler)) != sig_handler)
|
|
|
|
el->el_signal[i] = s;
|
|
|
|
}
|
|
|
|
sel = el;
|
|
|
|
(void) sigprocmask(SIG_SETMASK, &oset, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* sig_clr():
|
|
|
|
* clear all the signal handlers
|
|
|
|
*/
|
|
|
|
protected void
|
|
|
|
sig_clr(el)
|
|
|
|
EditLine *el;
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
sigset_t nset, oset;
|
|
|
|
|
|
|
|
(void) sigemptyset(&nset);
|
2000-07-26 23:46:28 +00:00
|
|
|
#define _DO(a) (void) sigaddset(&nset, a);
|
1994-05-27 05:00:24 +00:00
|
|
|
ALLSIGS
|
|
|
|
#undef _DO
|
|
|
|
(void) sigprocmask(SIG_BLOCK, &nset, &oset);
|
|
|
|
|
1995-05-30 05:51:47 +00:00
|
|
|
for (i = 0; sighdl[i] != -1; i++)
|
1997-06-25 08:14:24 +00:00
|
|
|
if (el->el_signal[i] != SIG_ERR)
|
1994-05-27 05:00:24 +00:00
|
|
|
(void) signal(sighdl[i], el->el_signal[i]);
|
|
|
|
|
|
|
|
sel = NULL; /* we are going to die if the handler is called */
|
|
|
|
(void) sigprocmask(SIG_SETMASK, &oset, NULL);
|
|
|
|
}
|