Bent Terp wrote: > Hi all! > > Maybe I'm just being silly here, but I'm wondering if anybody has ever > used their computer for sharing files over USB. That is, the computer > pretends to be a USB mass storage device. > > This could be useful for connecting to media players and such that > support you plugging a USB harddrive or memory stick. > > Surely, somebody must have thought of this before :-D > the USB interface only supports one 'master' (a computer) and all other devices are 'slaves'. the master and slave controllers are quite different. you'd need a special dongle to do this. and, of course, for the specific application you mention, you'd be sharing a raw block device, not 'files'... most of those devices are expecting a FAT or FAT32 file system on the mass storage device, so you'd need to have a FAT(32) file system, either on a loopback file or a real disk partition, that you would unmount then share via this hypothetical SUB virtual block device.