posix/src/clocksettime.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup POSIXAPI
0007  *
0008  * @brief Set Time of Clock
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 <time.h>
0042
0043 #include <rtems/score/todimpl.h>
0044 #include <rtems/seterr.h>
0045
0046 /*
0047  *  14.2.1 Clocks, P1003.1b-1993, p. 263
0048  */
0049
0050 int clock_settime(
0051   clockid_t              clock_id,
0052   const struct timespec *tp
0053 )
0054 {
0055   Status_Control status;
0056
0057   if ( !tp )
0058     rtems_set_errno_and_return_minus_one( EINVAL );
0059
0060   if ( clock_id == CLOCK_REALTIME ) {
0061     ISR_lock_Context lock_context;
0062
0063     status = _TOD_Is_valid_new_time_of_day( tp );
0064     if ( status != STATUS_SUCCESSFUL ) {
0065       rtems_set_errno_and_return_minus_one( STATUS_GET_POSIX( status ) );
0066     }
0067
0068     _TOD_Lock();
0069     _TOD_Acquire( &lock_context );
0070       status = _TOD_Set( tp, &lock_context );
0071     _TOD_Unlock();
0072
0073     if ( status != STATUS_SUCCESSFUL ) {
0074       rtems_set_errno_and_return_minus_one( STATUS_GET_POSIX( status ) );
0075     }
0076   }
0077 #ifdef _POSIX_CPUTIME
0078   else if ( clock_id == CLOCK_PROCESS_CPUTIME_ID ) {
0079     rtems_set_errno_and_return_minus_one( ENOSYS );
0080   }
0081 #endif
0082 #ifdef _POSIX_THREAD_CPUTIME
0083   else if ( clock_id == CLOCK_THREAD_CPUTIME_ID ) {
0084     rtems_set_errno_and_return_minus_one( ENOSYS );
0085   }
0086 #endif
0087   else {
0088     rtems_set_errno_and_return_minus_one( EINVAL );
0089   }
0090
0091   return 0;
0092 }