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[50.108.86.94]) by smtp.gmail.com with ESMTPSA id e66sm1194267itd.22.2016.09.22.10.40.07 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 22 Sep 2016 10:40:07 -0700 (PDT) From: Trond Myklebust To: anna.schumaker@netapp.com Cc: linux-nfs@vger.kernel.org, Oleg Drokin Subject: [PATCH v7 31/31] NFSv4.1: Even if the stateid is OK, we may need to recover the open modes Date: Thu, 22 Sep 2016 13:39:21 -0400 Message-Id: <1474565961-21303-32-git-send-email-trond.myklebust@primarydata.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1474565961-21303-31-git-send-email-trond.myklebust@primarydata.com> References: <1474565961-21303-1-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-2-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-3-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-4-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-5-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-6-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-7-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-8-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-9-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-10-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-11-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-12-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-13-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-14-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-15-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-16-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-17-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-18-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-19-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-20-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-21-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-22-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-23-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-24-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-25-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-26-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-27-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-28-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-29-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-30-git-send-email-trond.myklebust@primarydata.com> <1474565961-21303-31-git-send-email-trond.myklebust@primarydata.com> Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP TEST_STATEID only tells you that you have a valid open stateid. It doesn't tell the client anything about whether or not it holds the required share locks. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 30 +++++++++++++++++++++--------- 1 file changed, 21 insertions(+), 9 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 72858f900abf..7b8054db5e0f 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1387,6 +1387,17 @@ static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) nfs4_state_set_mode_locked(state, state->state | fmode); } +static bool nfs_open_stateid_recover_openmode(struct nfs4_state *state) +{ + if (state->n_rdonly && !test_bit(NFS_O_RDONLY_STATE, &state->flags)) + return true; + if (state->n_wronly && !test_bit(NFS_O_WRONLY_STATE, &state->flags)) + return true; + if (state->n_rdwr && !test_bit(NFS_O_RDWR_STATE, &state->flags)) + return true; + return false; +} + static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) { struct nfs_client *clp = state->owner->so_server->nfs_client; @@ -2589,16 +2600,13 @@ static int nfs41_check_open_stateid(struct nfs4_state *state) int status; if (test_bit(NFS_OPEN_STATE, &state->flags) == 0) { - if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) - return NFS_OK; + if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) { + if (nfs4_have_delegation(state->inode, state->state)) + return NFS_OK; + return -NFS4ERR_OPENMODE; + } return -NFS4ERR_BAD_STATEID; } - /* If a state reset has been done, test_stateid is unneeded */ - if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && - (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && - (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) - return -NFS4ERR_BAD_STATEID; - status = nfs41_test_and_free_expired_stateid(server, stateid, cred); trace_nfs4_test_open_stateid(state, NULL, status); if (status == -NFS4ERR_EXPIRED || status == -NFS4ERR_BAD_STATEID) { @@ -2608,7 +2616,11 @@ static int nfs41_check_open_stateid(struct nfs4_state *state) clear_bit(NFS_OPEN_STATE, &state->flags); stateid->type = NFS4_INVALID_STATEID_TYPE; } - return status; + if (status != NFS_OK) + return status; + if (nfs_open_stateid_recover_openmode(state)) + return -NFS4ERR_OPENMODE; + return NFS_OK; } static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)