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- /*
- * Copyright (c) 1993 Regents of the University of California.
- * All rights reserved.
- *
- * 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.
- */
-
- #ifndef lint
- static char RCSid[] =
- "$Id: signal.c,v 6.1 1993/07/15 22:47:30 mcooper Exp mcooper $";
-
- static char sccsid[] = "@(#)signal.c";
-
- static char copyright[] =
- "@(#) Copyright (c) 1993 Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #include "defs.h"
-
- #if defined(NEED_SIGBLOCK)
- static int current_mask = 0;
-
- int sigblock(mask)
- int mask;
- {
- int sig;
- int m;
- int oldmask;
-
- oldmask = current_mask;
- for ( sig = 1, m = 1; sig <= MAXSIG; sig++, m <<= 1 ) {
- if (mask & m) {
- sighold(sig);
- current_mask |= m;
- }
- }
- return oldmask;
- }
- #endif /* NEED_SIGBLOCK */
-
- #if defined(NEED_SIGSETMASK)
- int sigsetmask(mask)
- int mask;
- {
- int sig;
- int m;
- int oldmask;
-
- oldmask = current_mask;
- for ( sig = 1, m = 1; sig <= MAXSIG; sig++, m <<= 1 ) {
- if (mask & m) {
- sighold(sig);
- current_mask |= m;
- }
- else {
- sigrelse(sig);
- current_mask &= ~m;
- }
- }
- return oldmask;
- }
- #endif /* NEED_SIGSETMASK */
-