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authorJ. Bruce Fields <bfields@redhat.com>2011-10-10 17:44:19 -0400
committerJ. Bruce Fields <bfields@redhat.com>2011-10-11 12:15:15 -0400
commitb6d2f1ca3c1162f51098969e9c52fd099720416a (patch)
treebf8fa7abd3b601902ac034248a07b274b33e45fd /fs/nfsd
parenta084daf512bb66fa3c8e21c7027daea521179cd0 (diff)
downloadlinux-b6d2f1ca3c1162f51098969e9c52fd099720416a.tar.bz2
nfsd4: more robust ignoring of WANT bits in OPEN
Mask out the WANT bits right at the start instead of on each use. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4proc.c3
-rw-r--r--fs/nfsd/nfs4state.c5
2 files changed, 5 insertions, 3 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 4e41f65c7021..5b192a2512b6 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -315,6 +315,9 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
return nfserr_inval;
+ /* We don't yet support WANT bits: */
+ open->op_share_access &= NFS4_SHARE_ACCESS_MASK;
+
/*
* RFC5661 18.51.3
* Before RECLAIM_COMPLETE done, server should deny new lock
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 5f35f35a2da0..2042805da960 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2345,8 +2345,7 @@ static inline __be32 init_open_stateid(struct nfs4_ol_stateid *stp, struct nfs4_
stp->st_file = fp;
stp->st_access_bmap = 0;
stp->st_deny_bmap = 0;
- __set_bit(open->op_share_access & ~NFS4_SHARE_WANT_MASK,
- &stp->st_access_bmap);
+ __set_bit(open->op_share_access, &stp->st_access_bmap);
__set_bit(open->op_share_deny, &stp->st_deny_bmap);
stp->st_openstp = NULL;
return nfs_ok;
@@ -2690,7 +2689,7 @@ nfsd4_truncate(struct svc_rqst *rqstp, struct svc_fh *fh,
static __be32
nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *cur_fh, struct nfs4_ol_stateid *stp, struct nfsd4_open *open)
{
- u32 op_share_access = open->op_share_access & ~NFS4_SHARE_WANT_MASK;
+ u32 op_share_access = open->op_share_access;
bool new_access;
__be32 status;