blob: a889b4029c0794cd42546a2b53387534fa1e404a (
plain) (
tree)
|
|
/**
* @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.
*/
#ifdef 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;
_Objects_Allocator_lock();
shm = _POSIX_Shm_Get_by_name( name, 0, &obj_err );
if ( shm ) {
_Objects_Namespace_remove_string(
&_POSIX_Shm_Information,
&shm->Object
);
if ( shm->reference_count == 0 ) {
/* Only remove the shm object if no references exist to it. Otherwise,
* the shm object will be freed later in _POSIX_Shm_Attempt_delete */
_POSIX_Shm_Free( shm );
}
} else {
switch ( obj_err ) {
case OBJECTS_GET_BY_NAME_NAME_TOO_LONG:
err = ENAMETOOLONG;
break;
case OBJECTS_GET_BY_NAME_INVALID_NAME:
case OBJECTS_GET_BY_NAME_NO_OBJECT:
default:
err = ENOENT;
break;
}
}
_Objects_Allocator_unlock();
if ( err != 0 )
rtems_set_errno_and_return_minus_one( err );
return 0;
}
|