From the docs:

Components access names and paths via the following roles:

fileName (string)
filePath (string)
fileUrl (url) (since Qt 5.15)
fileBaseName (string)
fileSuffix (string)
fileSize (qlonglong)
fileModified (date)
fileAccessed (date)
fileIsDir (bool)

I found a use case for wanting to know whether the file is writeable.  So I suppose we could expose QFileDevice::Permissions as a qml-accessible flags role, or else have an invokable hasPermission(flg) or something like that.  There should be a nice way...