138 lines
2.6 KiB
C
138 lines
2.6 KiB
C
/*
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* Copyright (c) 2001-2005 Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Sponsored in part by the Defense Advanced Research Projects
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* Agency (DARPA) and Air Force Research Laboratory, Air Force
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* Materiel Command, USAF, under agreement number F39502-99-1-0512.
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*/
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#include <signal.h>
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#include <errno.h>
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#include <compat.h>
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int
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sigaction(signo, sa, osa)
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int signo;
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const sigaction_t *sa;
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sigaction_t *osa;
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{
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sigaction_t nsa;
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int error;
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/* We must reverse SV_INTERRUPT since it is the opposite of SA_RESTART */
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if (sa) {
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nsa = *sa;
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nsa.sa_flags ^= SV_INTERRUPT;
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sa = &nsa;
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}
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error = sigvec(signo, sa, osa);
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if (!error && osa)
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osa->sa_flags ^= SV_INTERRUPT; /* flip SV_INTERRUPT as above */
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return(error);
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}
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int
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sigemptyset(set)
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sigset_t *set;
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{
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*set = 0;
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return(0);
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}
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int
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sigfillset(set)
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sigset_t *set;
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{
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*set = ~0;;
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return(0);
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}
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int
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sigaddset(set, signo)
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sigset_t *set;
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int signo;
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{
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if (signo <= 0 || signo >= NSIG) {
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errno = EINVAL;
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return(-1);
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}
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SET(*set, sigmask(signo));
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return(0);
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}
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int
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sigdelset(set, signo)
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sigset_t *set;
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int signo;
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{
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if (signo <= 0 || signo >= NSIG) {
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errno = EINVAL;
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return(-1);
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}
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CLR(*set, sigmask(signo));
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return(0);
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}
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int
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sigismember(set, signo)
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sigset_t *set;
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int signo;
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{
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return(ISSET(*set, sigmask(signo)));
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}
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int
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sigprocmask(how, set, oset)
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int how;
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const sigset_t *set;
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sigset_t *oset;
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{
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int mask;
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/* If 'set' is NULL the user just wants the current signal mask. */
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if (set == 0)
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mask = sigblock(0);
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else
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switch (how) {
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case SIG_BLOCK:
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mask = sigblock(*set);
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break;
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case SIG_UNBLOCK:
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mask = sigsetmask(~*set);
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break;
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case SIG_SETMASK:
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mask = sigsetmask(*set);
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break;
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default:
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return(-1);
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}
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if (mask == -1)
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return(-1);
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if (oset)
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*oset = mask;
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return(0);
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}
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