thanks for sparing some time with my mail.

i want to add some cryptographic features to file system

i studied fs source code in linux.[ i mean what are functions in it.
what they will do..]

i thought that..
when vfs_write() calls the actual file system call ..

in that vfs_write() if i add a call to my encrypted function...
work is over...

is it correct???

iam working in redhat linux version 2.4
i find generic_file_write() function called by all every file system

is it that vfs_write() function

how to register new file system....
some documents on google telling that call "register_filesystem" how
to do that??