posix/src/mutexattrsetprotocol.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup POSIXAPI
0007  *
0008  * @brief Mutex Initialization Scheduling Attributes
0009  */
0010
0011 /*
0012  *  COPYRIGHT (c) 1989-2007.
0013  *  On-Line Applications Research Corporation (OAR).
0014  *
0015  * Redistribution and use in source and binary forms, with or without
0016  * modification, are permitted provided that the following conditions
0017  * are met:
0018  * 1. Redistributions of source code must retain the above copyright
0019  *    notice, this list of conditions and the following disclaimer.
0020  * 2. Redistributions in binary form must reproduce the above copyright
0021  *    notice, this list of conditions and the following disclaimer in the
0022  *    documentation and/or other materials provided with the distribution.
0023  *
0024  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0025  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0026  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0027  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0028  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0029  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0030  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0031  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0032  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0033  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0034  * POSSIBILITY OF SUCH DAMAGE.
0035  */
0036
0037 #ifdef HAVE_CONFIG_H
0038 #include "config.h"
0039 #endif
0040
0041 #include <errno.h>
0042 #include <pthread.h>
0043
0044 #include <rtems/score/coremuteximpl.h>
0045 #include <rtems/score/watchdog.h>
0046 #include <rtems/posix/muteximpl.h>
0047
0048 /*
0049  *  13.6.1 Mutex Initialization Scheduling Attributes, P1003.1c/Draft 10, p. 128
0050  */
0051
0052 int pthread_mutexattr_setprotocol(
0053   pthread_mutexattr_t   *attr,
0054   int                    protocol
0055 )
0056 {
0057   if ( !attr || !attr->is_initialized )
0058     return EINVAL;
0059
0060   switch ( protocol ) {
0061     case PTHREAD_PRIO_NONE:
0062     case PTHREAD_PRIO_INHERIT:
0063     case PTHREAD_PRIO_PROTECT:
0064       attr->protocol = protocol;
0065       return 0;
0066
0067     default:
0068       return EINVAL;
0069   }
0070 }