You might be able to make this work if you make your device indicate that it has removeable media. Then, whenever you post an update, you will need to force a media-change indication.
That will probably work for Windows, and for Linux will only work for devices which are accessed without mounting (i.e. via mtools or somesuch). With a mounted filesystem, you're pretty much stuck. Matt On Mon, Dec 03, 2007 at 03:38:09PM -0800, Brad Schick wrote: > Looking for some input on the following problem that I realized isn't > really usb specific: > > My goal is to display an html page that resides on a usb mass-storage > device and changes over time. The mass-storage device will be > read-only from the host OS, but needs to self modify its own data. The > end-user will view an html page that periodically refreshes itself and > hopefully changes over time. My concern is how caching in the host OS > may hide these changes. > > The usb device's MCU is very small and doesn't have space for a FAT > driver. To modify its data I was planning to just poke changes > directly to hard-coded offsets (the files can be pre-allocated since > data is not created, just modified). Perhaps I could also poke the FAT > file date, but would that be enough to cause Linux to reload the file? > Or will the kernel assume all changes to local file-systems must pass > through the kernel and miss even that? > > Maybe there is a better approach? One big limitation is that nothing > can be installed on the host. And I'll have to figure out Windows > eventually as well. > > Thanks, > -Brad > > ------------------------------------------------------------------------- > SF.Net email is sponsored by: The Future of Linux Business White Paper > from Novell. From the desktop to the data center, Linux is going > mainstream. Let it simplify your IT future. > http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 > _______________________________________________ > Linux-usb-users@lists.sourceforge.net > To unsubscribe, use the last form field at: > https://lists.sourceforge.net/lists/listinfo/linux-usb-users -- Matthew Dharm Home: [EMAIL PROTECTED] Maintainer, Linux USB Mass Storage Driver Oh great modem, why hast thou forsaken me? -- Dust Puppy User Friendly, 3/2/1998
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