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);
}
static bool IMFS_eval_is_directory(
rtems_filesystem_eval_path_context_t *ctx,
void *arg
)
{
rtems_filesystem_location_info_t *currentloc =
rtems_filesystem_eval_path_get_currentloc( ctx );
IMFS_jnode_t *node = currentloc->node_access;
return IMFS_is_directory( node );
}
int IMFS_unmount( rtems_filesystem_mount_table_entry_t *mt_entry )
{
int rv = 0;
IMFS_jnode_t *node = mt_entry->mt_point_node->location.node_access;
if ( IMFS_is_directory( node ) ) {
if ( node->info.directory.mt_fs == mt_entry ) {
node->info.directory.mt_fs = NULL;
} else {
errno = EINVAL;
rv = -1;
}
} else {
errno = ENOTDIR;
rv = -1;
}
return rv;
}
