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/**
* @file
*/
/*
* Copyright (c) 2016 Gedare Bloom.
*
* 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 <sys/mman.h>
#include <errno.h>
#include <rtems/seterr.h>
#include <rtems/posix/shmimpl.h>
int shm_unlink( const char *name )
{
Objects_Get_by_name_error obj_err;
int err = 0;
POSIX_Shm_Control *shm;
shm = _POSIX_Shm_Get_by_name( name, 0, &obj_err );
switch ( obj_err ) {
case OBJECTS_GET_BY_NAME_INVALID_NAME:
err = ENOENT;
break;
case OBJECTS_GET_BY_NAME_NAME_TOO_LONG:
err = ENAMETOOLONG;
break;
case OBJECTS_GET_BY_NAME_NO_OBJECT:
default:
_Objects_Close( &_POSIX_Shm_Information, &shm->Object );
if ( shm->reference_count == 0 ) {
/* TODO: need to make sure this counts mmaps too! */
/* only remove the shm object if no references exist to it. */
_POSIX_Shm_Free( shm );
}
break;
}
if ( err != 0 )
rtems_set_errno_and_return_minus_one( err );
return 0;
}
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