diff options
Diffstat (limited to 'cpukit/posix/src/psxtimercreate.c')
-rw-r--r-- | cpukit/posix/src/psxtimercreate.c | 56 |
1 files changed, 51 insertions, 5 deletions
diff --git a/cpukit/posix/src/psxtimercreate.c b/cpukit/posix/src/psxtimercreate.c index 2b5a10140f..907da01836 100644 --- a/cpukit/posix/src/psxtimercreate.c +++ b/cpukit/posix/src/psxtimercreate.c @@ -1,3 +1,5 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ + /** * @file * @@ -12,9 +14,26 @@ * COPYRIGHT (c) 1989-2007. * On-Line Applications Research Corporation (OAR). * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. */ #ifdef HAVE_CONFIG_H @@ -32,6 +51,31 @@ #include <rtems/seterr.h> #include <rtems/sysinit.h> +RTEMS_WEAK int _POSIX_Timer_Is_allowed( + clockid_t clock_id +) +{ + int rc = 0; + + /* + * Allow timer_create(CLOCK_REALTIME. ...) per POSIX by default + * on CLOCK_REALTIME or CLOCK_MONOTONIC. + * + * But per the FACE Technical Standard, POSIX timers should not be + * allowed on CLOCK_REALTIME for safety reasons. If the application + * configures that it wants the FACE behavior, then this method + * is overridden by <rtems/confdefs/timer.h>. + */ + + if ( clock_id != CLOCK_REALTIME ) { + if ( clock_id != CLOCK_MONOTONIC ) { + rc = EINVAL; + } + } + + return rc; +} + int timer_create( clockid_t clock_id, struct sigevent *__restrict evp, @@ -39,9 +83,11 @@ int timer_create( ) { POSIX_Timer_Control *ptimer; + int rc; - if ( clock_id != CLOCK_REALTIME && clock_id != CLOCK_MONOTONIC ) - rtems_set_errno_and_return_minus_one( EINVAL ); + rc = _POSIX_Timer_Is_allowed( clock_id ); + if ( rc != 0 ) + rtems_set_errno_and_return_minus_one( rc ); if ( !timerid ) rtems_set_errno_and_return_minus_one( EINVAL ); |