Takanori Watanabe <[EMAIL PROTECTED]> wrote: > Hi, I had trouble with unionfs when it calles getcwd(3) when > I mount some directory on the directry in same file system,like > mount -t union /usr/home/foo/bar /usr/src/sys/ . > > I investigate the problem by inserting debug print in getcwd.c. > Then I found issuing __getcwd(2) in getcwd(3) failed, and > climb up filesystem tree as the next way. But it failed when > it reaches to mount point. It seems that st_dev and st_ino > member returns the same number as the underlying filesystem > so it failed to recognize mount point. So I tried the patch as > follows taken from nullfs. Are there any problem with this patch?
It looks fine to me. I know you definitely need to provide this behavior when doing a "wrapper" filesystem to behave like the system's stat() :) > Takanori Watanabe > <a href="http://www.planet.sci.kobe-u.ac.jp/~takawata/key.html";> > Public Key</a> > Key fingerprint = 2C 51 E2 78 2C E1 C5 2D 0F F1 20 A3 11 3A 62 2A > > > --- union_vnops.c~ Tue Oct 2 00:01:37 2001 > +++ union_vnops.c Mon Feb 25 22:44:51 2002 > @@ -957,6 +957,8 @@ > union_newsize(ap->a_vp, VNOVAL, vap->va_size); > } > > + ap->a_vap->va_fsid = ap->a_vp->v_mount->mnt_stat.f_fsid.val[0]; > + > if ((vap != ap->a_vap) && (vap->va_type == VDIR)) > ap->a_vap->va_nlink += vap->va_nlink; > return (0); -- Brian Fundakowski Feldman \'[ FreeBSD ]''''''''''\ <> [EMAIL PROTECTED] <> [EMAIL PROTECTED] \ The Power to Serve! \ Opinions expressed are my own. \,,,,,,,,,,,,,,,,,,,,,,\ To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
