On Mon, 2009-02-09 at 14:54 +0100, Alberich de megres wrote: > Hello, > > I'm making my firsts steps with vfs and filesystem playground. > > I created a very simple fs, for wich i have a rude mkfs and its > fill_super function on kernel side. fill_super finish ok, and loadas > the super block for my filesystem, but when i make mount -t testfs > /dev/sdb1 /mnt/tfs i got the following message: "mount: not a > directory" fill_super() needs to at least allocate an inode and dentry for the root inode and assign sb->s_root to point to the root dentry. > And here comes my question: what vfs is supposed to do since it loads > sb and tries to list dir content? and what functions vfs needs at > least to mount my fs? ( just load it, and display an empty dir with > ls, not creating files etc... ) > The root inode needs to have file operations (i_fop) that include a readdir() method and probably one for llseek() (generic_file_llseek should be sufficient). If you haven't already found it, you probably want to take a look at http://www.geocities.com/ravikiran_uvs/articles/rkfs.html Shaggy -- David Kleikamp IBM Linux Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
