lib/libc/compat/sys/compat_nanosleep.c

   1 /*      $NetBSD: compat_nanosleep.c,v 1.2 2009/01/11 02:46:26 christos Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2008 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  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *        This product includes software developed by the NetBSD
  21  *        Foundation, Inc. and its contributors.
  22  * 4. Neither the name of The NetBSD Foundation nor the names of its
  23  *    contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  36  * POSSIBILITY OF SUCH DAMAGE.
  37  */
  38 #include <sys/cdefs.h>
  39 #if defined(LIBC_SCCS) && !defined(lint)
  40 __RCSID("$NetBSD: compat_nanosleep.c,v 1.2 2009/01/11 02:46:26 christos Exp $");
  41 #endif /* LIBC_SCCS and not lint */
  42
  43 #include "namespace.h"
  44 #define __LIBC12_SOURCE__
  45 #include <time.h>
  46 #include <compat/include/time.h>
  47
  48 __warn_references(nanosleep,
  49     "warning: reference to compatibility nanosleep(); include <time.h> to generate correct reference")
  50
  51 #ifdef __weak_alias
  52 __weak_alias(nanosleep, _nanosleep)
  53 __weak_alias(_sys_nanosleep, _nanosleep)
  54 #endif
  55
  56 /*
  57  * Copy timeout to local variable and call the syscall.
  58  */
  59 int
  60 nanosleep(const struct timespec50 *ts50, struct timespec50 *rts50)
  61 {
  62         struct timespec ts, *tsp;
  63         struct timespec rts, *rtsp;
  64         int error;
  65
  66         rtsp = rts50 ? &rts : NULL;
  67         if (ts50)
  68                 timespec50_to_timespec(ts50, tsp = &ts);
  69         else
  70                 tsp = NULL;
  71         error = __nanosleep50(tsp, rtsp);
  72         if (error)
  73                 return error;
  74         if (rts50)
  75                 timespec_to_timespec50(rtsp, rts50);
  76         return 0;
  77 }