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/* $OpenBSD: sigaction.c,v 1.4 2001/01/22 18:01:48 millert Exp $ */
/****************************************************************************
* Copyright (c) 1998,2000 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
****************************************************************************/
/* OPENBSD ORIGINAL: lib/libcurses/base/sigaction.c */
#include "includes.h"
#include <errno.h>
#include <signal.h>
#include "sigact.h"
/* This file provides sigaction() emulation using sigvec() */
/* Use only if this is non POSIX system */
#if !HAVE_SIGACTION && HAVE_SIGVEC
int
sigaction(int sig, struct sigaction *sigact, struct sigaction *osigact)
{
return sigvec(sig, sigact ? &sigact->sv : NULL,
osigact ? &osigact->sv : NULL);
}
int
sigemptyset (sigset_t *mask)
{
if (!mask) {
errno = EINVAL;
return -1;
}
*mask = 0;
return 0;
}
int
sigprocmask (int mode, sigset_t *mask, sigset_t *omask)
{
sigset_t current = sigsetmask(0);
if (!mask) {
errno = EINVAL;
return -1;
}
if (omask)
*omask = current;
if (mode == SIG_BLOCK)
current |= *mask;
else if (mode == SIG_UNBLOCK)
current &= ~*mask;
else if (mode == SIG_SETMASK)
current = *mask;
sigsetmask(current);
return 0;
}
int
sigsuspend (sigset_t *mask)
{
if (!mask) {
errno = EINVAL;
return -1;
}
return sigpause(*mask);
}
int
sigdelset (sigset_t *mask, int sig)
{
if (!mask) {
errno = EINVAL;
return -1;
}
*mask &= ~sigmask(sig);
return 0;
}
int
sigaddset (sigset_t *mask, int sig)
{
if (!mask) {
errno = EINVAL;
return -1;
}
*mask |= sigmask(sig);
return 0;
}
int
sigismember (sigset_t *mask, int sig)
{
if (!mask) {
errno = EINVAL;
return -1;
}
return (*mask & sigmask(sig)) != 0;
}
#endif
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