From: NeilBrown <neilb@cse.unsw.edu.au>
This patch makes "find" work when traversing nohide exports on NFSv3. The
READDIRPLUS reply needs to not return a file handle for the ".." entry when
the directory is a server side mountpoint, which would be the directory
itself, otherwise the client remembers the wrong file handle and gets
confused.
Signed-off-by: Greg Banks <gnb@melbourne.sgi.com>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/fs/nfsd/nfs3xdr.c | 5 +++++
1 files changed, 5 insertions(+)
diff -puN fs/nfsd/nfs3xdr.c~nfsd--sgi-921857-find-broken-with-nohide-on-nfsv3 fs/nfsd/nfs3xdr.c
--- 25/fs/nfsd/nfs3xdr.c~nfsd--sgi-921857-find-broken-with-nohide-on-nfsv3 2005-02-07 19:19:03.000000000 -0800
+++ 25-akpm/fs/nfsd/nfs3xdr.c 2005-02-07 19:19:03.000000000 -0800
@@ -801,6 +801,11 @@ compose_entry_fh(struct nfsd3_readdirres
if (isdotent(name, namlen)) {
if (namlen == 2) {
dchild = dget_parent(dparent);
+ if (dchild == dparent) {
+ /* filesystem root - cannot return filehandle for ".." */
+ dput(dchild);
+ return 1;
+ }
} else
dchild = dget(dparent);
} else
_