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/*
* IMFS Initialization
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include "imfs.h"
/*
* IMFS_fsunmount
*/
#define jnode_get_control( jnode ) \
(&jnode->info.directory.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;
/*
* Set this to null to indicate that it is being unmounted.
*/
temp_mt_entry->mt_fs_root->location.node_access = NULL;
do {
next = jnode->Parent;
loc.node_access = (void *)jnode;
IMFS_Set_handlers( &loc );
if ( jnode->type != IMFS_DIRECTORY || jnode_has_no_children( jnode ) ) {
result = IMFS_rmnod( NULL, &loc );
if (result != 0)
rtems_fatal_error_occurred(0xdeadbeef);
jnode = next;
}
if ( jnode != NULL ) {
if ( jnode->type == IMFS_DIRECTORY ) {
if ( jnode_has_children( jnode ) )
jnode = jnode_get_first_child( jnode );
}
}
} while (jnode != NULL);
}
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