file system name
Returns a list of two elements, the first of which is the name of the filesystem to use for the file, and the second an arbitrary string representing the filesystem-specific nature or type of the location within that filesystem. If a filesystem only supports one type of file, the second element may be null. For example the native files have a first element 'native', and a second element which is a platform-specific type name for the file's system (e.g. 'NTFS', 'FAT', etc), or possibly the empty string if no further information is available or if this is not implemented. A generic virtual file system might return the list 'vfs ftp' to represent a file on a remote ftp site mounted as a virtual filesystem through an extension called 'vfs'. If the file does not belong to any filesystem, an error is generated.
See also: