10Sstevel@tonic-gate /*
20Sstevel@tonic-gate * CDDL HEADER START
30Sstevel@tonic-gate *
40Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*6812Sraf * Common Development and Distribution License (the "License").
6*6812Sraf * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate *
80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate * See the License for the specific language governing permissions
110Sstevel@tonic-gate * and limitations under the License.
120Sstevel@tonic-gate *
130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate *
190Sstevel@tonic-gate * CDDL HEADER END
200Sstevel@tonic-gate */
21*6812Sraf
220Sstevel@tonic-gate /*
23*6812Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
240Sstevel@tonic-gate * Use is subject to license terms.
250Sstevel@tonic-gate */
260Sstevel@tonic-gate
270Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
280Sstevel@tonic-gate
29*6812Sraf #pragma weak _bsd_signal = bsd_signal
300Sstevel@tonic-gate
31*6812Sraf #include "lint.h"
320Sstevel@tonic-gate #include <sys/types.h>
330Sstevel@tonic-gate #include <errno.h>
340Sstevel@tonic-gate #include <signal.h>
350Sstevel@tonic-gate #include <wait.h>
360Sstevel@tonic-gate
370Sstevel@tonic-gate /*
380Sstevel@tonic-gate * Check for valid signal number
390Sstevel@tonic-gate */
400Sstevel@tonic-gate #define CHECK_SIG(s, code) \
410Sstevel@tonic-gate if ((s) <= 0 || (s) >= NSIG || (s) == SIGKILL || (s) == SIGSTOP) { \
420Sstevel@tonic-gate errno = EINVAL; \
430Sstevel@tonic-gate return (code); \
440Sstevel@tonic-gate }
450Sstevel@tonic-gate
460Sstevel@tonic-gate void (*
bsd_signal(int sig,void (* func)(int))470Sstevel@tonic-gate bsd_signal(int sig, void(*func)(int)))(int)
480Sstevel@tonic-gate {
490Sstevel@tonic-gate struct sigaction nact;
500Sstevel@tonic-gate struct sigaction oact;
510Sstevel@tonic-gate
520Sstevel@tonic-gate CHECK_SIG(sig, SIG_ERR);
530Sstevel@tonic-gate
540Sstevel@tonic-gate nact.sa_handler = func;
550Sstevel@tonic-gate nact.sa_flags = SA_RESTART;
560Sstevel@tonic-gate (void) sigemptyset(&nact.sa_mask);
570Sstevel@tonic-gate (void) sigaddset(&nact.sa_mask, sig);
580Sstevel@tonic-gate
590Sstevel@tonic-gate if (sigaction(sig, &nact, &oact) == -1)
600Sstevel@tonic-gate return (SIG_ERR);
610Sstevel@tonic-gate
620Sstevel@tonic-gate return (oact.sa_handler);
630Sstevel@tonic-gate }
64