Currently get_free_space() is part of the ThunarVfsVolume interface, which is not very nice. It'd be better to move it to ThunarVfsInfo.
Committed with revision 19716. 2006-02-02 Benedikt Meurer <benny@xfce.org> * configure.in.in: Check for statvfs() and statfs(), and required header files. * thunar-vfs/thunar-vfs-info.{c,h}, thunar-vfs/thunar-vfs-volume.{c,h}, thunar-vfs/thunar-vfs-volume-bsd.c, thunar-vfs/thunar-vfs.symbols: Move the get_free_space() method from ThunarVfsVolume to ThunarVfsInfo so we can use it even if no volume manager implementation is avail- able for the target system. Bug #1420.