int memfile_check_rmnod( IMFS_jnode_t *the_jnode ){
/*
* The file cannot be open and the link must be less than 1 to free.
*/
if ( !rtems_libio_is_file_open( the_jnode ) && (the_jnode->st_nlink < 1) ) {
/*
* Is the rtems_filesystem_current is this node?
*/
if ( rtems_filesystem_current.node_access == the_jnode )
rtems_filesystem_current.node_access = NULL;
/*
* Free memory associated with a memory file.
*/
if (the_jnode->type != IMFS_LINEAR_FILE)
IMFS_memfile_remove( the_jnode );
free( the_jnode );
}
return 0;
}
void IMFS_check_node_remove( IMFS_jnode_t *jnode )
{
if ( !rtems_libio_is_file_open( jnode ) && jnode->st_nlink < 1 ) {
if ( rtems_filesystem_current.node_access == jnode )
rtems_filesystem_current.node_access = NULL;
switch ( jnode->type ) {
case IMFS_MEMORY_FILE:
IMFS_memfile_remove( jnode );
break;
case IMFS_SYM_LINK:
free( jnode->info.sym_link.name );
break;
default:
break;
}
free( jnode );
}
}
int imfs_dir_rmnod(
rtems_filesystem_location_info_t *parent_pathloc, /* IN */
rtems_filesystem_location_info_t *pathloc /* IN */
)
{
IMFS_jnode_t *the_jnode;
the_jnode = (IMFS_jnode_t *) pathloc->node_access;
/*
* You cannot remove a node that still has children
*/
if ( ! rtems_chain_is_empty( &the_jnode->info.directory.Entries ) )
rtems_set_errno_and_return_minus_one( ENOTEMPTY );
/*
* You cannot remove the file system root node.
*/
if ( pathloc->mt_entry->mt_fs_root.node_access == pathloc->node_access )
rtems_set_errno_and_return_minus_one( EBUSY );
/*
* You cannot remove a mountpoint.
*/
if ( the_jnode->info.directory.mt_fs != NULL )
rtems_set_errno_and_return_minus_one( EBUSY );
/*
* Take the node out of the parent's chain that contains this node
*/
if ( the_jnode->Parent != NULL ) {
rtems_chain_extract( (rtems_chain_node *) the_jnode );
the_jnode->Parent = NULL;
}
/*
* Decrement the link counter and see if we can free the space.
*/
the_jnode->st_nlink--;
IMFS_update_ctime( the_jnode );
/*
* The file cannot be open and the link must be less than 1 to free.
*/
if ( !rtems_libio_is_file_open( the_jnode ) && (the_jnode->st_nlink < 1) ) {
/*
* Is the rtems_filesystem_current is this node?
*/
if ( rtems_filesystem_current.node_access == pathloc->node_access )
rtems_filesystem_current.node_access = NULL;
/*
* Free memory associated with a memory file.
*/
free( the_jnode );
}
return 0;
}