Annotation of src/usr.bin/rdist/signal.c, Revision 1.2
1.1 dm 1: /*
2: * Copyright (c) 1993 Regents of the University of California.
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. All advertising materials mentioning features or use of this software
14: * must display the following acknowledgement:
15: * This product includes software developed by the University of
16: * California, Berkeley and its contributors.
17: * 4. Neither the name of the University nor the names of its contributors
18: * may be used to endorse or promote products derived from this software
19: * without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
32: */
33:
34: #ifndef lint
35: static char RCSid[] =
36: "$Id: signal.c,v 6.1 1993/07/15 22:47:30 mcooper Exp mcooper $";
37:
38: static char sccsid[] = "@(#)signal.c";
39:
40: static char copyright[] =
41: "@(#) Copyright (c) 1993 Regents of the University of California.\n\
42: All rights reserved.\n";
43: #endif /* not lint */
44:
45: #include "defs.h"
46:
47: #if defined(NEED_SIGBLOCK)
48: static int current_mask = 0;
49:
50: int sigblock(mask)
51: int mask;
52: {
53: int sig;
54: int m;
55: int oldmask;
56:
57: oldmask = current_mask;
58: for ( sig = 1, m = 1; sig <= MAXSIG; sig++, m <<= 1 ) {
59: if (mask & m) {
60: sighold(sig);
61: current_mask |= m;
62: }
63: }
64: return oldmask;
65: }
66: #endif /* NEED_SIGBLOCK */
67:
68: #if defined(NEED_SIGSETMASK)
69: int sigsetmask(mask)
70: int mask;
71: {
72: int sig;
73: int m;
74: int oldmask;
75:
76: oldmask = current_mask;
77: for ( sig = 1, m = 1; sig <= MAXSIG; sig++, m <<= 1 ) {
78: if (mask & m) {
79: sighold(sig);
80: current_mask |= m;
81: }
82: else {
83: sigrelse(sig);
84: current_mask &= ~m;
85: }
86: }
87: return oldmask;
88: }
89: #endif /* NEED_SIGSETMASK */