129 lines
3.3 KiB
C
129 lines
3.3 KiB
C
/* $NetBSD: sigcompat.c,v 1.11 2003/08/07 16:42:40 agc Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1989, 1993
|
|
* The 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. 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
#if 0
|
|
static char sccsid[] = "@(#)sigcompat.c 8.1 (Berkeley) 6/2/93";
|
|
#else
|
|
__RCSID("$NetBSD: sigcompat.c,v 1.11 2003/08/07 16:42:40 agc Exp $");
|
|
#endif
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <signal.h>
|
|
|
|
static __inline void sv2sa __P((struct sigaction *, const struct sigvec *));
|
|
static __inline void sa2sv __P((struct sigvec *, const struct sigaction *));
|
|
|
|
static __inline void
|
|
sv2sa(sa, sv)
|
|
struct sigaction *sa;
|
|
const struct sigvec *sv;
|
|
{
|
|
sigemptyset(&sa->sa_mask);
|
|
sa->sa_mask.__bits[0] = sv->sv_mask;
|
|
sa->sa_handler = sv->sv_handler;
|
|
sa->sa_flags = sv->sv_flags ^ SV_INTERRUPT; /* !SA_INTERRUPT */
|
|
}
|
|
|
|
static __inline void
|
|
sa2sv(sv, sa)
|
|
struct sigvec *sv;
|
|
const struct sigaction *sa;
|
|
{
|
|
sv->sv_mask = sa->sa_mask.__bits[0];
|
|
sv->sv_handler = sa->sa_handler;
|
|
sv->sv_flags = sa->sa_flags ^ SV_INTERRUPT; /* !SA_INTERRUPT */
|
|
}
|
|
|
|
int
|
|
sigvec(signo, nsv, osv)
|
|
int signo;
|
|
struct sigvec *nsv, *osv;
|
|
{
|
|
int ret;
|
|
struct sigaction osa, nsa;
|
|
|
|
if (nsv)
|
|
sv2sa(&nsa, nsv);
|
|
|
|
ret = sigaction(signo, nsv ? &nsa : NULL, osv ? &osa : NULL);
|
|
|
|
if (ret == 0 && osv)
|
|
sa2sv(osv, &osa);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
int
|
|
sigsetmask(mask)
|
|
int mask;
|
|
{
|
|
sigset_t nmask, omask;
|
|
int n;
|
|
|
|
sigemptyset(&nmask);
|
|
nmask.__bits[0] = mask;
|
|
|
|
n = sigprocmask(SIG_SETMASK, &nmask, &omask);
|
|
if (n)
|
|
return (n);
|
|
return (omask.__bits[0]);
|
|
}
|
|
|
|
int
|
|
sigblock(mask)
|
|
int mask;
|
|
{
|
|
sigset_t nmask, omask;
|
|
int n;
|
|
|
|
sigemptyset(&nmask);
|
|
nmask.__bits[0] = mask;
|
|
|
|
n = sigprocmask(SIG_BLOCK, &nmask, &omask);
|
|
if (n)
|
|
return (n);
|
|
return (omask.__bits[0]);
|
|
}
|
|
|
|
int
|
|
sigpause(mask)
|
|
int mask;
|
|
{
|
|
sigset_t nmask;
|
|
|
|
sigemptyset(&nmask);
|
|
nmask.__bits[0] = mask;
|
|
return (sigsuspend(&nmask));
|
|
}
|