Prex Home / Browse Source - Prex Version: 0.9.0

root/usr/lib/posix/signal/sigcompat.c

DEFINITIONS

1. sigvec
2. sigsetmask
3. sigblock
4. sigpause

   1 /*
   2  * Copyright (c) 1989, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  30 #include <sys/param.h>
  31 #include <signal.h>
  33 int
sigvec(signo, sv, osv)
  35         int signo;
  36         struct sigvec *sv, *osv;
  37 {
  38         int ret;
  40         if (sv)
sv->sv_flags ^= SV_INTERRUPT;   /* !SA_INTERRUPT */
ret = sigaction(signo, (struct sigaction *)sv, (struct sigaction *)osv);
  43         if (ret == 0 && osv)
osv->sv_flags ^= SV_INTERRUPT;  /* !SA_INTERRUPT */
  45         return (ret);
  46 }
  48 int
sigsetmask(mask)
  50         int mask;
  51 {
  52         int omask, n;
n = sigprocmask(SIG_SETMASK, (sigset_t *) &mask, (sigset_t *) &omask);
  55         if (n)
  56                 return (n);
  57         return (omask);
  58 }
  60 int
sigblock(mask)
  62         int mask;
  63 {
  64         int omask, n;
n = sigprocmask(SIG_BLOCK, (sigset_t *) &mask, (sigset_t *) &omask);
  67         if (n)
  68                 return (n);
  69         return (omask);
  70 }
  72 int
sigpause(mask)
  74         int mask;
  75 {
  76         return (sigsuspend((sigset_t *)&mask));
  77 }