xref: /onnv-gate/usr/src/cmd/ssh/libopenbsd-compat/common/sigact.c (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*	$OpenBSD: sigaction.c,v 1.3 1999/06/27 08:14:21 millert Exp $	*/
2*0Sstevel@tonic-gate 
3*0Sstevel@tonic-gate /****************************************************************************
4*0Sstevel@tonic-gate  * Copyright (c) 1998 Free Software Foundation, Inc.                        *
5*0Sstevel@tonic-gate  *                                                                          *
6*0Sstevel@tonic-gate  * Permission is hereby granted, free of charge, to any person obtaining a  *
7*0Sstevel@tonic-gate  * copy of this software and associated documentation files (the            *
8*0Sstevel@tonic-gate  * "Software"), to deal in the Software without restriction, including      *
9*0Sstevel@tonic-gate  * without limitation the rights to use, copy, modify, merge, publish,      *
10*0Sstevel@tonic-gate  * distribute, distribute with modifications, sublicense, and/or sell       *
11*0Sstevel@tonic-gate  * copies of the Software, and to permit persons to whom the Software is    *
12*0Sstevel@tonic-gate  * furnished to do so, subject to the following conditions:                 *
13*0Sstevel@tonic-gate  *                                                                          *
14*0Sstevel@tonic-gate  * The above copyright notice and this permission notice shall be included  *
15*0Sstevel@tonic-gate  * in all copies or substantial portions of the Software.                   *
16*0Sstevel@tonic-gate  *                                                                          *
17*0Sstevel@tonic-gate  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
18*0Sstevel@tonic-gate  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
19*0Sstevel@tonic-gate  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
20*0Sstevel@tonic-gate  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
21*0Sstevel@tonic-gate  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
22*0Sstevel@tonic-gate  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
23*0Sstevel@tonic-gate  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
24*0Sstevel@tonic-gate  *                                                                          *
25*0Sstevel@tonic-gate  * Except as contained in this notice, the name(s) of the above copyright   *
26*0Sstevel@tonic-gate  * holders shall not be used in advertising or otherwise to promote the     *
27*0Sstevel@tonic-gate  * sale, use or other dealings in this Software without prior written       *
28*0Sstevel@tonic-gate  * authorization.                                                           *
29*0Sstevel@tonic-gate  ****************************************************************************/
30*0Sstevel@tonic-gate 
31*0Sstevel@tonic-gate /****************************************************************************
32*0Sstevel@tonic-gate  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
33*0Sstevel@tonic-gate  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
34*0Sstevel@tonic-gate  ****************************************************************************/
35*0Sstevel@tonic-gate 
36*0Sstevel@tonic-gate #include "includes.h"
37*0Sstevel@tonic-gate #include <signal.h>
38*0Sstevel@tonic-gate #include "sigact.h"
39*0Sstevel@tonic-gate 
40*0Sstevel@tonic-gate /* This file provides sigaction() emulation using sigvec() */
41*0Sstevel@tonic-gate /* Use only if this is non POSIX system */
42*0Sstevel@tonic-gate 
43*0Sstevel@tonic-gate #if !HAVE_SIGACTION && HAVE_SIGVEC
44*0Sstevel@tonic-gate 
45*0Sstevel@tonic-gate int
sigaction(int sig,struct sigaction * sigact,struct sigaction * osigact)46*0Sstevel@tonic-gate sigaction(int sig, struct sigaction *sigact, struct sigaction *osigact)
47*0Sstevel@tonic-gate {
48*0Sstevel@tonic-gate 	return sigvec(sig, &(sigact->sv), &(osigact->sv));
49*0Sstevel@tonic-gate }
50*0Sstevel@tonic-gate 
51*0Sstevel@tonic-gate int
sigemptyset(sigset_t * mask)52*0Sstevel@tonic-gate sigemptyset (sigset_t * mask)
53*0Sstevel@tonic-gate {
54*0Sstevel@tonic-gate 	*mask = 0;
55*0Sstevel@tonic-gate 	return 0;
56*0Sstevel@tonic-gate }
57*0Sstevel@tonic-gate 
58*0Sstevel@tonic-gate int
sigprocmask(int mode,sigset_t * mask,sigset_t * omask)59*0Sstevel@tonic-gate sigprocmask (int mode, sigset_t * mask, sigset_t * omask)
60*0Sstevel@tonic-gate {
61*0Sstevel@tonic-gate 	sigset_t current = sigsetmask(0);
62*0Sstevel@tonic-gate 
63*0Sstevel@tonic-gate 	if (omask) *omask = current;
64*0Sstevel@tonic-gate 
65*0Sstevel@tonic-gate 	if (mode==SIG_BLOCK)
66*0Sstevel@tonic-gate 		current |= *mask;
67*0Sstevel@tonic-gate 	else if (mode==SIG_UNBLOCK)
68*0Sstevel@tonic-gate 		current &= ~*mask;
69*0Sstevel@tonic-gate 	else if (mode==SIG_SETMASK)
70*0Sstevel@tonic-gate 	current = *mask;
71*0Sstevel@tonic-gate 
72*0Sstevel@tonic-gate 	sigsetmask(current);
73*0Sstevel@tonic-gate 	return 0;
74*0Sstevel@tonic-gate }
75*0Sstevel@tonic-gate 
76*0Sstevel@tonic-gate int
sigsuspend(sigset_t * mask)77*0Sstevel@tonic-gate sigsuspend (sigset_t * mask)
78*0Sstevel@tonic-gate {
79*0Sstevel@tonic-gate 	return sigpause(*mask);
80*0Sstevel@tonic-gate }
81*0Sstevel@tonic-gate 
82*0Sstevel@tonic-gate int
sigdelset(sigset_t * mask,int sig)83*0Sstevel@tonic-gate sigdelset (sigset_t * mask, int sig)
84*0Sstevel@tonic-gate {
85*0Sstevel@tonic-gate 	*mask &= ~sigmask(sig);
86*0Sstevel@tonic-gate 	return 0;
87*0Sstevel@tonic-gate }
88*0Sstevel@tonic-gate 
89*0Sstevel@tonic-gate int
sigaddset(sigset_t * mask,int sig)90*0Sstevel@tonic-gate sigaddset (sigset_t * mask, int sig)
91*0Sstevel@tonic-gate {
92*0Sstevel@tonic-gate 	*mask |= sigmask(sig);
93*0Sstevel@tonic-gate 	return 0;
94*0Sstevel@tonic-gate }
95*0Sstevel@tonic-gate 
96*0Sstevel@tonic-gate int
sigismember(sigset_t * mask,int sig)97*0Sstevel@tonic-gate sigismember (sigset_t * mask, int sig)
98*0Sstevel@tonic-gate {
99*0Sstevel@tonic-gate 	return (*mask & sigmask(sig)) != 0;
100*0Sstevel@tonic-gate }
101*0Sstevel@tonic-gate 
102*0Sstevel@tonic-gate #endif
103*0Sstevel@tonic-gate 
104*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
105