On 08/09/2011 10:31 AM, J. Bruce Fields wrote: > On Mon, Aug 08, 2011 at 05:38:08PM +0200, Bernd Schubert wrote: >> Fan Yong <yong.fan@xxxxxxxxxxxxx> 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. > > Wow, thanks, I wonder where that check came from. Looks like it was > there since the very first nfsv4 commit. > Even for the "very first nfsv4 commit" it sounds like a stupid bug. Probably a copy/paste from V2 code. What about V3, does V3 code have this bug? Boaz > Applying. > > --b. > >> >> Signed-off-by: Bernd Schubert <bernd.schubert@xxxxxxxxxxxxxxxxxx> >> --- >> 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; >> >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html > -- > To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
