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/**
* @file
*
* @brief Unmount this Instance of IMFS
* @ingroup IMFS
*/
/*
* 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.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include "imfs.h"
#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 ( !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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