On Thu, 2006-01-26 at 15:45 +0530, Sunil Agham wrote: <snip> > i used ramfs code, i then defined open and readdir functions and added > printk, i compliled it as a module,inserted to kernel and mounted it. What do you mean? How did you define open and readdir in ramfs? Did you define your own calls? If so, did you replace the pointers in the operation vectors? > and when i invoked "ls" at mount point, its not invoking open, > readdir > can anyone please help me . The ls command calls the getdents (or getdents64) system call. Check the code for sys_getdents() in fs/readdir.c. This system call calls vfs_readdir, which calls file->f_op->readdir(). If you look at ramfs_get_inode(), if it is creating a directory, it sets inode->i_fop to simple_dir_operations, which defines both open and readdir. Feel free to ask any more questions you have on kernelnewbies, but your question had nothing to do with the unionfs developers, so I don't know why you sent it there... Good luck. Avishay Traeger http://www.fsl.cs.sunysb.edu/~avishay/ -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
