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/**
* @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.
*
* 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 <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;
}
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