/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup IMFS
*
* @brief IMFS Node Support
*/
/*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* Modifications to support reference counting in the file system are
* Copyright (c) 2012 embedded brains GmbH.
*
* 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
#include "config.h"
#endif
#include <rtems/imfs.h>
IMFS_jnode_t *IMFS_initialize_node(
IMFS_jnode_t *node,
const IMFS_node_control *node_control,
const char *name,
size_t namelen,
mode_t mode,
void *arg
)
{
time_t now;
if ( namelen > IMFS_NAME_MAX ) {
errno = ENAMETOOLONG;
return NULL;
}
/*
* Fill in the basic information
*/
node->name = name;
node->namelen = namelen;
node->reference_count = 1;
node->st_nlink = 1;
node->control = node_control;
/*
* Fill in the mode and permission information for the jnode structure.
*/
node->st_mode = mode;
node->st_uid = geteuid();
node->st_gid = getegid();
/*
* Now set all the times.
*/
now = _IMFS_get_time();
node->stat_atime = now;
node->stat_mtime = now;
node->stat_ctime = now;
return (*node_control->node_initialize)( node, arg );
}
int IMFS_node_clone( rtems_filesystem_location_info_t *loc )
{
IMFS_jnode_t *node = loc->node_access;
++node->reference_count;
return 0;
}
void IMFS_node_destroy( IMFS_jnode_t *node )
{
IMFS_assert( node->reference_count == 0 );
(*node->control->node_destroy)( node );
}
void IMFS_node_free( const rtems_filesystem_location_info_t *loc )
{
IMFS_jnode_t *node = loc->node_access;
--node->reference_count;
if ( node->reference_count == 0 ) {
IMFS_node_destroy( node );
}
}
IMFS_jnode_t *IMFS_node_remove_default(
IMFS_jnode_t *node
)
{
return node;
}
void IMFS_do_nothing_destroy( IMFS_jnode_t *node )
{
(void) node;
}