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Annotation of 43BSDReno/lib/libc/gen/sigsetops.c, revision 1.1.1.1

1.1       root        1: /*-
                      2:  * Copyright (c) 1989 The Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted provided
                      6:  * that: (1) source distributions retain this entire copyright notice and
                      7:  * comment, and (2) distributions including binaries display the following
                      8:  * acknowledgement:  ``This product includes software developed by the
                      9:  * University of California, Berkeley and its contributors'' in the
                     10:  * documentation or other materials provided with the distribution and in
                     11:  * all advertising materials mentioning features or use of this software.
                     12:  * Neither the name of the University nor the names of its contributors may
                     13:  * be used to endorse or promote products derived from this software without
                     14:  * specific prior written permission.
                     15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     16:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     17:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     18:  *
                     19:  *     @(#)sigset.c    5.2 (Berkeley) 7/1/90
                     20:  */
                     21: 
                     22: #if defined(LIBC_SCCS) && !defined(lint)
                     23: static char sccsid[] = "@(#)sigset.c   5.2 (Berkeley) 7/1/90";
                     24: #endif /* LIBC_SCCS and not lint */
                     25: 
                     26: #include <sys/signal.h>
                     27: 
                     28: #undef sigemptyset
                     29: #undef sigfillset
                     30: #undef sigaddset
                     31: #undef sigdelset
                     32: #undef sigismember
                     33: 
                     34: sigemptyset(set)
                     35:        sigset_t *set;
                     36: {
                     37:        *set = 0;
                     38:        return (0);
                     39: }
                     40: 
                     41: sigfillset(set)
                     42:        sigset_t *set;
                     43: {
                     44:        *set = ~(sigset_t)0;
                     45:        return (0);
                     46: }
                     47: 
                     48: sigaddset(set, signo)
                     49:        sigset_t *set;
                     50:        int signo;
                     51: {
                     52:        *set |= sigmask(signo);
                     53:        return (0);
                     54: }
                     55: 
                     56: sigdelset(set, signo)
                     57:        sigset_t *set;
                     58:        int signo;
                     59: {
                     60:        *set &= ~sigmask(signo);
                     61:        return (0);
                     62: }
                     63: 
                     64: sigismember(set, signo)
                     65:        sigset_t *set;
                     66:        int signo;
                     67: {
                     68:        return ((*set & ~sigmask(signo)) != 0);
                     69: }

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