lib/libc/compat-43/sigcompat.c

   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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * $FreeBSD: src/lib/libc/compat-43/sigcompat.c,v 1.7 2000/01/27 23:06:04 jasone Exp $
  34  * $DragonFly: src/lib/libc/compat-43/sigcompat.c,v 1.3 2005/01/31 22:29:03 dillon Exp $
  35  */
  36
  37 #include "namespace.h"
  38 #include <sys/param.h>
  39 #include <signal.h>
  40 #include "un-namespace.h"
  41 #include "libc_private.h"
  42
  43 int
  44 sigvec(int signo, struct sigvec *sv, struct sigvec *osv)
  45 {
  46         struct sigaction sa, osa;
  47         struct sigaction *sap, *osap;
  48         int ret;
  49
  50         if (sv != NULL) {
  51                 sa.sa_handler = sv->sv_handler;
  52                 sa.sa_flags = sv->sv_flags ^ SV_INTERRUPT;
  53                 sigemptyset(&sa.sa_mask);
  54                 sa.sa_mask.__bits[0] = sv->sv_mask;
  55                 sap = &sa;
  56         } else
  57                 sap = NULL;
  58         osap = osv != NULL ? &osa : NULL;
  59         ret = _sigaction(signo, sap, osap);
  60         if (ret == 0 && osv != NULL) {
  61                 osv->sv_handler = osa.sa_handler;
  62                 osv->sv_flags = osa.sa_flags ^ SV_INTERRUPT;
  63                 osv->sv_mask = osa.sa_mask.__bits[0];
  64         }
  65         return (ret);
  66 }
  67
  68 int
  69 sigsetmask(int mask)
  70 {
  71         sigset_t set, oset;
  72         int n;
  73
  74         sigemptyset(&set);
  75         set.__bits[0] = mask;
  76         n = _sigprocmask(SIG_SETMASK, &set, &oset);
  77         if (n)
  78                 return (n);
  79         return (oset.__bits[0]);
  80 }
  81
  82 int
  83 sigblock(int mask)
  84 {
  85         sigset_t set, oset;
  86         int n;
  87
  88         sigemptyset(&set);
  89         set.__bits[0] = mask;
  90         n = _sigprocmask(SIG_BLOCK, &set, &oset);
  91         if (n)
  92                 return (n);
  93         return (oset.__bits[0]);
  94 }
  95
  96 int
  97 sigpause(int mask)
  98 {
  99         sigset_t set;
 100
 101         sigemptyset(&set);
 102         set.__bits[0] = mask;
 103         return (_sigsuspend(&set));
 104 }