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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup IMFS
*
* @brief Unmount this Instance of IMFS
*/
/*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* 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>
#define jnode_get_control( jnode ) \
(&((IMFS_directory_t *) jnode)->Entries)
#define jnode_has_no_children( jnode ) \
rtems_chain_is_empty( jnode_get_control( jnode ) )
#define jnode_has_children( jnode ) \
( ! jnode_has_no_children( jnode ) )
#define jnode_get_first_child( jnode ) \
((IMFS_jnode_t *)( rtems_chain_head( jnode_get_control( jnode ) )->next))
void IMFS_fsunmount(
rtems_filesystem_mount_table_entry_t *temp_mt_entry
)
{
IMFS_jnode_t *jnode;
IMFS_jnode_t *next;
rtems_filesystem_location_info_t loc;
int result = 0;
/*
* Traverse tree that starts at the mt_fs_root and deallocate memory
* associated memory space
*/
loc = temp_mt_entry->mt_fs_root->location;
jnode = (IMFS_jnode_t *)loc.node_access;
do {
next = jnode->Parent;
loc.node_access = (void *)jnode;
IMFS_Set_handlers( &loc );
if ( !IMFS_is_directory( jnode ) || jnode_has_no_children( jnode ) ) {
result = IMFS_rmnod( NULL, &loc );
if ( result != 0 )
rtems_fatal_error_occurred( 0xdeadbeef );
IMFS_node_destroy( jnode );
jnode = next;
}
if ( jnode != NULL ) {
if ( IMFS_is_directory( jnode ) ) {
if ( jnode_has_children( jnode ) )
jnode = jnode_get_first_child( jnode );
}
}
} while (jnode != NULL);
}
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