compat43.subproj/sigcompat.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1989, 1993
  24  *      The Regents of the University of California.  All rights reserved.
  25  *
  26  * Redistribution and use in source and binary forms, with or without
  27  * modification, are permitted provided that the following conditions
  28  * are met:
  29  * 1. Redistributions of source code must retain the above copyright
  30  *    notice, this list of conditions and the following disclaimer.
  31  * 2. Redistributions in binary form must reproduce the above copyright
  32  *    notice, this list of conditions and the following disclaimer in the
  33  *    documentation and/or other materials provided with the distribution.
  34  * 3. All advertising materials mentioning features or use of this software
  35  *    must display the following acknowledgement:
  36  *      This product includes software developed by the University of
  37  *      California, Berkeley and its contributors.
  38  * 4. Neither the name of the University nor the names of its contributors
  39  *    may be used to endorse or promote products derived from this software
  40  *    without specific prior written permission.
  41  *
  42  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  43  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  44  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  45  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  46  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  47  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  48  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  49  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  50  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  51  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  52  * SUCH DAMAGE.
  53  */
  54
  55
  56 #include <sys/param.h>
  57 #include <signal.h>
  58
  59 static int sigvec__(signo, sv, osv, bind)
  60         int signo;
  61         struct sigvec *sv, *osv;
  62         int bind;
  63 {
  64         int ret;
  65
  66         if (sv)
  67                 sv->sv_flags ^= SV_INTERRUPT;   /* !SA_INTERRUPT */
  68 #if defined(__DYNAMIC__)
  69         if (bind) {
  70 #endif
  71             ret = sigaction(signo, (struct sigaction *)sv, (struct sigaction *)osv);
  72 #if defined(__DYNAMIC__)
  73         } else {
  74             ret = _sigaction_nobind(signo, (struct sigaction *)sv, (struct sigaction *)osv);
  75         }
  76 #endif
  77         if (ret == 0 && osv)
  78                 osv->sv_flags ^= SV_INTERRUPT;  /* !SA_INTERRUPT */
  79         return (ret);
  80 }
  81
  82 int sigvec(signo, sv, osv)
  83         int signo;
  84         struct sigvec *sv, *osv;
  85 {
  86     return sigvec__(signo, sv, osv, 1);
  87 }
  88
  89 #if defined(__DYNAMIC__)
  90 int _sigvec_nobind(signo, sv, osv)
  91         int signo;
  92         struct sigvec *sv, *osv;
  93 {
  94     return sigvec__(signo, sv, osv, 0);
  95 }
  96 #endif
  97
  98 int sigsetmask(mask)
  99         int mask;
 100 {
 101         int omask, n;
 102
 103         n = sigprocmask(SIG_SETMASK, (sigset_t *) &mask, (sigset_t *) &omask);
 104         if (n)
 105                 return (n);
 106         return (omask);
 107 }
 108
 109 int sigblock(mask)
 110         int mask;
 111 {
 112         int omask, n;
 113
 114         n = sigprocmask(SIG_BLOCK, (sigset_t *) &mask, (sigset_t *) &omask);
 115         if (n)
 116                 return (n);
 117         return (omask);
 118 }
 119
 120 int sigpause(mask)
 121         int mask;
 122 {
 123         return (sigsuspend((sigset_t *)&mask));
 124 }