[PATCH 3/4] RFC: Remove check for a 32-bit cookie in nfsd4_readdir()
From: Bernd Schubert <hidden>
Date: 2011-08-08 15:38:08
Also in:
linux-ext4, linux-fsdevel
Subsystem:
filesystems (vfs and infrastructure), kernel nfsd, sunrpc, and lockd servers, the rest · Maintainers:
Alexander Viro, Christian Brauner, Chuck Lever, Jeff Layton, Linus Torvalds
Fan Yong [off-list ref] noticed setting FMODE_32bithash wouldn't work with nfsd v4, as nfsd4_readdir() checks for 32 bit cookies. However, according to RFC 3530 cookies have a 64 bit type and cookies are also defined as u64 in 'struct nfsd4_readdir'. So remove the test for >32-bit values. Signed-off-by: Bernd Schubert <redacted> --- fs/nfsd/nfs4proc.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index e807776..9bf0a66 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c@@ -691,7 +691,7 @@ nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); - if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) || + if ((cookie == 1) || (cookie == 2) || (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) return nfserr_bad_cookie;