On Fri, Feb 21, 2003 at 11:15:19AM -0800, Bryan Henderson wrote: > > > > > >Supose my fs name is "ext2cryptfs" , will make change in make > >files to make a ext2cryptfs.o file and in super.c i gave proper > >name in register_filesystem call in function init now , > > > >here are two cases when it is loaded as module or fixed in kernel > >as permenent resident , then in later case where i need to chnage > >, from documents i got that i need to change vfs code but wher are > >those files > > > >... > > > >plz try to solve my trivial question > > I had a lot of trouble parsing this English, so forgive me if I'm not > understanding your question. The term "vfs code" is ambiguous -- people > use it to mean different things. But you say you changed super.c in your > filesystem driver from what it was in the ext2 filesystem driver that you > copied. That is all you need to do. There is no other code you have to > change to make your new filesystem type work. > > But if you are binding your filesystem driver into the base kernel rather > than loading it dynamically, there is something you have to do to get the > base kernel build to include your code and to get the base kernel > initialization code to initialize your filesystem driver. I don't know > exactly what that is, though. I've never done it. I understand the term "vfs code" as the generic code in fs directory itself (not subdirectories). IIRC In 2.4.x you should only need to change it's header. include/linux/fs.h needs to include headers *_fs_i.h and *_fs_sb.h. If you created ext2crypt_fs.h, ext2crypt_fs_i.h and ext2crypt_fs_sb.h (you need to, because you must have renamed public symbols), make fs.h to know about the later two. In 2.5.x you need no changes to any C code whatsoever. Then you need to tell makefile to build it. You need to add a tristate config option for your filesystem and add your directory and files to obj-$(<your-option>). (Just copy the things for CONFIG_EXT2_FS for your option.) ------------------------------------------------------------------------------- Jan 'Bulb' Hudec <bulb@ucw.cz> -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
