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/**
* @file
*
* @brief Initializing of an Unnamed Semaphore
* @ingroup POSIXAPI
*/
/*
* 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.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdarg.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <semaphore.h>
#include <limits.h>
#include <rtems/system.h>
#include <rtems/posix/semaphoreimpl.h>
#include <rtems/seterr.h>
/*
* 11.2.1 Initialize an Unnamed Semaphore, P1003.1b-1993, p.219
*/
int sem_init(
sem_t *sem,
int pshared,
unsigned int value
)
{
int status;
POSIX_Semaphore_Control *the_semaphore;
if ( sem == NULL ) {
rtems_set_errno_and_return_minus_one( EINVAL );
}
if ( value > SEM_VALUE_MAX ) {
rtems_set_errno_and_return_minus_one( EINVAL );
}
_Objects_Allocator_lock();
status = _POSIX_Semaphore_Create_support(
NULL,
0,
pshared,
value,
&the_semaphore
);
_Objects_Allocator_unlock();
if ( status != -1 )
*sem = the_semaphore->Object.id;
return status;
}
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