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/*
* Copyright (c) 2001 Todd C. Miller <Todd.Miller@courtesan.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Sponsored in part by the Defense Advanced Research Projects
* Agency (DARPA) and Air Force Research Laboratory, Air Force
* Materiel Command, USAF, under agreement number F39502-99-1-0512.
*/
#include <signal.h>
#include <errno.h>
#include <compat.h>
#ifndef lint
static const char rcsid[] = "$Sudo: sigaction.c,v 1.5 2004/02/13 21:36:43 millert Exp $";
#endif /* lint */
int
sigaction(signo, sa, osa)
int signo;
const sigaction_t *sa;
sigaction_t *osa;
{
sigaction_t nsa;
int error;
/* We must reverse SV_INTERRUPT since it is the opposite of SA_RESTART */
if (sa) {
nsa = *sa;
nsa.sa_flags ^= SV_INTERRUPT;
sa = &nsa;
}
error = sigvec(signo, sa, osa);
if (!error && osa)
osa->sa_flags ^= SV_INTERRUPT; /* flip SV_INTERRUPT as above */
return(error);
}
int
sigemptyset(set)
sigset_t *set;
{
*set = 0;
return(0);
}
int
sigfillset(set)
sigset_t *set;
{
*set = ~0;;
return(0);
}
int
sigaddset(set, signo)
sigset_t *set;
int signo;
{
if (signo <= 0 || signo >= NSIG) {
errno = EINVAL;
return(-1);
}
SET(*set, sigmask(signo));
return(0);
}
int
sigdelset(set, signo)
sigset_t *set;
int signo;
{
if (signo <= 0 || signo >= NSIG) {
errno = EINVAL;
return(-1);
}
CLR(*set, sigmask(signo));
return(0);
}
int
sigismember(set, signo)
sigset_t *set;
int signo;
{
return(ISSET(*set, sigmask(signo)));
}
int
sigprocmask(how, set, oset)
int how;
const sigset_t *set;
sigset_t *oset;
{
int mask;
/* If 'set' is NULL the user just wants the current signal mask. */
if (set == 0)
mask = sigblock(0);
else
switch (how) {
case SIG_BLOCK:
mask = sigblock(*set);
break;
case SIG_UNBLOCK:
mask = sigsetmask(~*set);
break;
case SIG_SETMASK:
mask = sigsetmask(*set);
break;
default:
return(-1);
}
if (mask == -1)
return(-1);
if (oset)
*oset = mask;
return(0);
}
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