> > > Does the nodeid for the root directory have to be FUSE_ROOT_ID? > > > > Yeh, I think that's the case, otherwise FUSE_INIT would need to > > tell the kernel the root nodeid, because there is no lookup to > > return the root nodeid. > > > > > I guess > > > for ext4 that's not a big deal since ext2 inode #1 is the badblocks file > > > which cannot be accessed from userspace anyway. > > > > > > > As long as inode #1 is reserved it should be fine. > > just need to refine the rules of the one-to-one mapping with > > this exception. > > Or just make it so that passthrough_ino filesystems can specify the > rootdir inumber? > There is already a mount option 'rootmode' for st_mode of root inode so I suppose we could add the rootino mount option. Note that currently fuse_fill_super_common() instantiates the root inode before negotiating FUSE_INIT with the server. Thanks, Amir.
