gvfs is a backends for the gio framework in GLib
Gvfs is a userspace virtual filesystem implementation for GIO (a library available in GLib). It comes with a set of backends, including trash support, SFTP, SMB, HTTP, DAV, and many others. Gvfs also contains modules for GIO that implement volume monitors and persistent metadata storage.
acquired package info from repodata DB: repodata/1878cc60a19e65efc93d1a539275c5a6799b0acbd7796ee105712c44cae47ab4-primary.sqlite.bz2
The GNOME Virtual File System provides an abstraction to common file system operations like reading, writing and copying files, listing directories and so on. It also provides support for reading and writing files on windows shares (SMB) to applications using GNOME VFS. GNOME-VFS is extensible and usable from any application on the GNOME desktop.