ProjFS

See example for more information

Get Start

One should create a struct MyProjFS that implements Sync, ProjFSDirEnum and ProjFSRead in order to get a instance.

// create root dir to be projected
std::fs::create_dir("root_dir").ok();
// create a virtualization instance of MyProjFS
// this function returned immediately, and you would like to hold the instance during the projection
let instance = start_proj_virtualization("root_dir", Box::new(MyProjFS::new())).unwrap();
std::thread::sleep(std::time::Duration::from_secs(std::u64::MAX));
// once the instance dropped, the projection stopped
drop(instance)

Features

See also mircosoft guide here Now we could provide callback functions

• PRJ_CANCEL_COMMAND_CB
• PRJ_END_DIRECTORY_ENUMERATION_CB
• PRJ_GET_DIRECTORY_ENUMERATION_CB
• PRJ_GET_FILE_DATA_CB (via ProjFSRead::read)
• PRJ_GET_PLACEHOLDER_INFO_CB (via ProjFSRead::get_metadata)
• PRJ_NOTIFICATION_CB
• PRJ_QUERY_FILE_NAME_CB
• PRJ_START_DIRECTORY_ENUMERATION_CB

Callback series PRJ_*_DIRECTORY_ENUMERATION_CB would be generate by ProjFSDirEnum::dir_iter and ProjFSDirEnum::dir_iter_cache.

Note

Make sure Projected File System is enabled on your machine

Enable-WindowsOptionalFeature -Online -FeatureName Client-ProjFS -NoRestart