Hello! On Fri, May 28, 2021 at 3:10 PM Masami Hiramatsu <mhiramat@xxxxxxxxxx> wrote: > > Hi, [...] > > > This idea sounds good to me. I have tested it with MINCS container shell > script (https://github.com/mhiramat/mincs). > > However, I found different issue on init_eaccess() (or symlink lookup) > with this series. > > I'm using a busybox initramfs, and it makes /init as a symlink of "/sbin/init" > (absolute path) > > When CONFIG_INITRAMFS_USER_ROOT=n, it booted. But CONFIG_INITRAMFS_USER_ROOT=y, > it failed to boot because it failed to find /init. If I made the /init as > a symlink of "sbin/init" (relative path), it works. > > Would you have any idea? > Thanks for your report! I think it's because of the path lookup on '/'. With LOOKUP_DOWN set, the lookup for '/' of '/init' will follow the mount. However, during the follow link of '/sbin/init', the '/' of it will not be followed, because LOOKUP_DOWN only works one time. I'm not sure if this is an imperfection of 'path_lookupat()'. I'll fix it in the next series. Thanks! Menglong Dong
