sapi/src/extensioncreate.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup RTEMSImplClassicUserExt
0007  *
0008  * @brief This source file contains the implementation of
0009  *   rtems_extension_create() and the User Extensions Manager system
0010  *   initialization.
0011  */
0012
0013 /*
0014  *  COPYRIGHT (c) 1989-2007.
0015  *  On-Line Applications Research Corporation (OAR).
0016  *
0017  * Redistribution and use in source and binary forms, with or without
0018  * modification, are permitted provided that the following conditions
0019  * are met:
0020  * 1. Redistributions of source code must retain the above copyright
0021  *    notice, this list of conditions and the following disclaimer.
0022  * 2. Redistributions in binary form must reproduce the above copyright
0023  *    notice, this list of conditions and the following disclaimer in the
0024  *    documentation and/or other materials provided with the distribution.
0025  *
0026  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0027  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0028  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0029  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0030  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0031  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0032  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0033  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0034  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0035  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0036  * POSSIBILITY OF SUCH DAMAGE.
0037  */
0038
0039 #ifdef HAVE_CONFIG_H
0040 #include "config.h"
0041 #endif
0042
0043 #include <rtems/extensionimpl.h>
0044 #include <rtems/rtems/support.h>
0045 #include <rtems/score/userextimpl.h>
0046 #include <rtems/sysinit.h>
0047
0048 rtems_status_code rtems_extension_create(
0049   rtems_name                    name,
0050   const rtems_extensions_table *extension_table,
0051   rtems_id                     *id
0052 )
0053 {
0054   Extension_Control *the_extension;
0055
0056   if ( !rtems_is_name_valid( name ) ) {
0057     return RTEMS_INVALID_NAME;
0058   }
0059
0060   if ( extension_table == NULL ) {
0061     return RTEMS_INVALID_ADDRESS;
0062   }
0063
0064   if ( id == NULL ) {
0065     return RTEMS_INVALID_ADDRESS;
0066   }
0067
0068   the_extension = _Extension_Allocate();
0069
0070   if ( the_extension == NULL ) {
0071     _Objects_Allocator_unlock();
0072     return RTEMS_TOO_MANY;
0073   }
0074
0075   _User_extensions_Add_set_with_table( &the_extension->Extension, extension_table );
0076
0077   *id = _Objects_Open_u32(
0078     &_Extension_Information,
0079     &the_extension->Object,
0080     name
0081   );
0082   _Objects_Allocator_unlock();
0083   return RTEMS_SUCCESSFUL;
0084 }
0085
0086 static void _Extension_Manager_initialization( void )
0087 {
0088   _Objects_Initialize_information( &_Extension_Information);
0089 }
0090
0091 RTEMS_SYSINIT_ITEM(
0092   _Extension_Manager_initialization,
0093   RTEMS_SYSINIT_USER_EXTENSIONS,
0094   RTEMS_SYSINIT_ORDER_MIDDLE
0095 );