lib/libc/sys/sigqueue.c

   1 /* $NetBSD: sigqueue.c,v 1.2 2011/01/10 16:42:36 christos Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2011 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Christos Zoulas.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31 #include <sys/cdefs.h>
  32 #if defined(LIBC_SCCS) && !defined(lint)
  33 __RCSID("$NetBSD: sigqueue.c,v 1.2 2011/01/10 16:42:36 christos Exp $");
  34 #endif /* LIBC_SCCS and not lint */
  35
  36 #include "namespace.h"
  37 #include <sys/types.h>
  38 #include <sys/syscall.h>
  39 #include <string.h>
  40 #include <signal.h>
  41 #include <unistd.h>
  42
  43 /*
  44  * This is wrapper around sigqueueinfo(2), providing a sigqueue()
  45  * implementation for userland.
  46  */
  47 int
  48 sigqueue(pid_t pid, int signo, const union sigval value)
  49 {
  50         siginfo_t info;
  51
  52         (void)memset(&info, 0, sizeof(info));
  53
  54         info.si_signo = signo;
  55         info.si_code = SI_QUEUE;
  56         info.si_pid = getpid();
  57         info.si_uid = geteuid();
  58         info.si_value = value;
  59
  60         return sigqueueinfo(pid, &info);
  61 }