IMFS: yet another trouble.

[Jake Janovetz]

Well, first of all, this is how I used TFTP for the first little
while.  It's read-only, but it provides a similar interface.
Writing a simple FTP client and using that as the low-level
could also work.  I don't know how much simpler it would be than
NFS, though.

    Jake


On Fri, Dec 01, 2000 at 09:14:40AM -0500, Rosimildo da Silva wrote:
> Hi all,
> 
> Once we are talking about file systems, I am wondering if a simple 
> low level interface to emulate a remote FS stored in a file exist. 
> I know about NFS, but that is too complicated and large for embedded 
> systems.
> 
> The idea is define a low level API that is equivalent to the one of a
> flash, i.e 
> ( read, write, erase, capacity ). 
> 
> The idea is to have the "real" device emulated as a file in a remote
> machine 
> with a hard driver or any other non-volatile device, and have the image
> stored 
> there, and remote devices that need some persistency, would talk to this
> remote
> server using TCP/IP sockets.
> 
> On top of this API, you would plug logical file systems such as IMFS.
> 
> 
> The api:
> 
> struct device_descriptor
> {
>    int 	   sock_handle;
>    size_t  capacity;
> 
>    ...
> 
> };
> 
>   int llfs_connect( const char *remote_host, device_descriptor *dd );
> 
>   int llfs_write( char *buffer, size_t size, size_t offset );
>   int llfs_read( char *buffer, size_t size, size_t offset );
>   int llfs_erase( char *buffer, size_t size, size_t offset );
> 
>   int llfs_close( device_descriptor *dd );
> 
> 
> On the host side, a utility to add, remove, view, and delete files
> stored
> into the binary image would need to be developed.
> 
> Does such a beast exist ?
> 
> 
> -- 
> Rosimildo da Silva            rdasilva at connectel.com 
> ConnectTel, Inc.              Austin, TX -- USA      
> Phone : 512-338-1111          Fax : 512-918-0449     
> Company Page:  http://www.connecttel.com             
> Home Page:     http://members.nbci.com/rosimildo/