diff options
Diffstat (limited to 'bin/1sh/libedit/sig.c')
| -rw-r--r-- | bin/1sh/libedit/sig.c | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/bin/1sh/libedit/sig.c b/bin/1sh/libedit/sig.c deleted file mode 100644 index 83742a3d..00000000 --- a/bin/1sh/libedit/sig.c +++ /dev/null @@ -1,205 +0,0 @@ -/* $NetBSD: sig.c,v 1.26 2016/05/09 21:46:56 christos Exp $ */ - -/*- - * 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. 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. - */ - -#include "config.h" -#if !defined(lint) && !defined(SCCSID) -#if 0 -static char sccsid[] = "@(#)sig.c 8.1 (Berkeley) 6/4/93"; -#else -__RCSID("$NetBSD: sig.c,v 1.26 2016/05/09 21:46:56 christos Exp $"); -#endif -#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 <errno.h> -#include <stdlib.h> - -#include "el.h" -#include "common.h" - -static EditLine *sel = NULL; - -static const int sighdl[] = { -#define _DO(a) (a), - ALLSIGS -#undef _DO - - 1 -}; - -static void sig_handler(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 - */ -static void -sig_handler(int signo) -{ - int i, save_errno; - sigset_t nset, oset; - - save_errno = errno; - (void) sigemptyset(&nset); - (void) sigaddset(&nset, signo); - (void) sigprocmask(SIG_BLOCK, &nset, &oset); - - sel->el_signal->sig_no = signo; - - switch (signo) { - case SIGCONT: - tty_rawmode(sel); - if (ed_redisplay(sel, 0) == CC_REFRESH) - re_refresh(sel); - terminal__flush(sel); - break; - - case SIGWINCH: - el_resize(sel); - break; - - default: - tty_cookedmode(sel); - break; - } - - for (i = 0; sighdl[i] != -1; i++) - if (signo == sighdl[i]) - break; - - (void) sigaction(signo, &sel->el_signal->sig_action[i], NULL); - sel->el_signal->sig_action[i].sa_handler = SIG_ERR; - sel->el_signal->sig_action[i].sa_flags = 0; - sigemptyset(&sel->el_signal->sig_action[i].sa_mask); - (void) sigprocmask(SIG_SETMASK, &oset, NULL); - (void) kill(0, signo); - errno = save_errno; -} - - -/* sig_init(): - * Initialize all signal stuff - */ -libedit_private int -sig_init(EditLine *el) -{ - size_t i; - sigset_t *nset, oset; - - el->el_signal = el_malloc(sizeof(*el->el_signal)); - if (el->el_signal == NULL) - return -1; - - nset = &el->el_signal->sig_set; - (void) sigemptyset(nset); -#define _DO(a) (void) sigaddset(nset, a); - ALLSIGS -#undef _DO - (void) sigprocmask(SIG_BLOCK, nset, &oset); - - for (i = 0; sighdl[i] != -1; i++) { - el->el_signal->sig_action[i].sa_handler = SIG_ERR; - el->el_signal->sig_action[i].sa_flags = 0; - sigemptyset(&el->el_signal->sig_action[i].sa_mask); - } - - (void) sigprocmask(SIG_SETMASK, &oset, NULL); - - return 0; -} - - -/* sig_end(): - * Clear all signal stuff - */ -libedit_private void -sig_end(EditLine *el) -{ - - el_free(el->el_signal); - el->el_signal = NULL; -} - - -/* sig_set(): - * set all the signal handlers - */ -libedit_private void -sig_set(EditLine *el) -{ - size_t i; - sigset_t oset; - struct sigaction osa, nsa; - - nsa.sa_handler = sig_handler; - nsa.sa_flags = 0; - sigemptyset(&nsa.sa_mask); - - (void) sigprocmask(SIG_BLOCK, &el->el_signal->sig_set, &oset); - - for (i = 0; sighdl[i] != -1; i++) { - /* This could happen if we get interrupted */ - if (sigaction(sighdl[i], &nsa, &osa) != -1 && - osa.sa_handler != sig_handler) - el->el_signal->sig_action[i] = osa; - } - sel = el; - (void) sigprocmask(SIG_SETMASK, &oset, NULL); -} - - -/* sig_clr(): - * clear all the signal handlers - */ -libedit_private void -sig_clr(EditLine *el) -{ - size_t i; - sigset_t oset; - - (void) sigprocmask(SIG_BLOCK, &el->el_signal->sig_set, &oset); - - for (i = 0; sighdl[i] != -1; i++) - if (el->el_signal->sig_action[i].sa_handler != SIG_ERR) - (void)sigaction(sighdl[i], - &el->el_signal->sig_action[i], NULL); - - sel = NULL; /* we are going to die if the handler is - * called */ - (void)sigprocmask(SIG_SETMASK, &oset, NULL); -} |