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[v7,26/31] NFSv4: Don't test open_stateid unless it is set

Message ID 1474565961-21303-27-git-send-email-trond.myklebust@primarydata.com (mailing list archive)
State New, archived
Headers show

Commit Message

Trond Myklebust Sept. 22, 2016, 5:39 p.m. UTC 
We need to test the NFS_OPEN_STATE flag for whether or not the
open_stateid is valid.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
---
 fs/nfs/nfs4proc.c | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 552bea2af811..995b646c9aea 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2587,6 +2587,11 @@  static int nfs41_check_open_stateid(struct nfs4_state *state)
 	struct rpc_cred *cred = state->owner->so_cred;
 	int status;
 
+	if (test_bit(NFS_OPEN_STATE, &state->flags) == 0) {
+		if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
+			return NFS_OK;
+		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) &&