posix/src/mprotect.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup POSIXAPI
0007  *
0008  * @brief Change Memory Protection
0009  *
0010  * 12.2.3 Change Memory Protection, P1003.1b-1996, p. 277.
0011  *
0012  * This is not a functional version of mprotect() but the SPARC backend
0013  * for at least gcc 2.8.1 plus gnat 3.13p and gcc 3.0.1 require it to
0014  * be there and return 0.
0015  *
0016  * As of gcc 4.2.2, the gcc SPARC backend doesn't appear to have a
0017  * way to call this for RTEMS anymore but it doesn't hurt to leave it.
0018  */
0019
0020 /*
0021  *  COPYRIGHT (c) 1989-2014.
0022  *  On-Line Applications Research Corporation (OAR).
0023  *
0024  * Redistribution and use in source and binary forms, with or without
0025  * modification, are permitted provided that the following conditions
0026  * are met:
0027  * 1. Redistributions of source code must retain the above copyright
0028  *    notice, this list of conditions and the following disclaimer.
0029  * 2. Redistributions in binary form must reproduce the above copyright
0030  *    notice, this list of conditions and the following disclaimer in the
0031  *    documentation and/or other materials provided with the distribution.
0032  *
0033  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0034  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0035  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0036  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0037  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0038  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0039  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0040  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0041  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0042  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0043  * POSSIBILITY OF SUCH DAMAGE.
0044  */
0045
0046 #ifdef HAVE_CONFIG_H
0047 #include "config.h"
0048 #endif
0049
0050 #include <unistd.h>
0051 #include <sys/mman.h>
0052
0053 int mprotect(
0054 #ifdef HAVE_MPROTECT_CONST
0055   const void *addr,
0056 #else
0057   void *addr,
0058 #endif
0059   size_t len,
0060   int prot
0061 )
0062 {
0063   (void) addr;
0064   (void) len;
0065   (void) prot;
0066   return 0;
0067 }