diff mbox

[v3,4/4] NFSv4: Fail the truncate() if the lock/open stateid is invalid

Message ID 1394028452-15956-5-git-send-email-trond.myklebust@primarydata.com (mailing list archive)
State New, archived
Headers show

Commit Message

Trond Myklebust March 5, 2014, 2:07 p.m. UTC
If the open stateid could not be recovered, or the file locks were lost,
then we should fail the truncate() operation altogether.

Reported-by: Andy Adamson <andros@netapp.com>
Link: http://lkml.kernel.org/r/1393954269-3974-1-git-send-email-andros@netapp.com
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
---
 fs/nfs/nfs4proc.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)
diff mbox

Patch

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 4778c55d0336..bc60a0f81019 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2398,13 +2398,16 @@  static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
 
 	if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) {
 		/* Use that stateid */
-	} else if (truncate && state != NULL && nfs4_valid_open_stateid(state)) {
+	} else if (truncate && state != NULL) {
 		struct nfs_lockowner lockowner = {
 			.l_owner = current->files,
 			.l_pid = current->tgid,
 		};
-		nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE,
-				&lockowner);
+		if (!nfs4_valid_open_stateid(state))
+			return -EBADF;
+		if (nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE,
+				&lockowner) < 0)
+			return -EBADF;
 	} else
 		nfs4_stateid_copy(&arg.stateid, &zero_stateid);