ksmbd: don't grant a persistent handle if the share is not continuous availability

Commit Message

Namjae Jeon April 12, 2024, 1:04 a.m. UTC

If capabilities of the share is not SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY,
ksmbd should not grant a persistent handle to the client.

Signed-off-by: Namjae Jeon <[e-mail]>
---
 fs/smb/server/mgmt/tree_connect.h | 1 +
 fs/smb/server/smb2pdu.c           | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

Patch

diff --git a/fs/smb/server/mgmt/tree_connect.h b/fs/smb/server/mgmt/tree_connect.h
index 6377a70b811c..27de34200c83 100644
--- a/fs/smb/server/mgmt/tree_connect.h
+++ b/fs/smb/server/mgmt/tree_connect.h
@@ -34,6 +34,7 @@  struct ksmbd_tree_connect {
 	atomic_t			refcount;
 	wait_queue_head_t		refcount_q;
 	unsigned int			t_state;
+	unsigned int			t_cap;
 };
 
 struct ksmbd_tree_conn_status {
diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c
index 5723bbf372d7..1f1f06c5174e 100644
--- a/fs/smb/server/smb2pdu.c
+++ b/fs/smb/server/smb2pdu.c
@@ -3498,7 +3498,8 @@  int smb2_open(struct ksmbd_work *work)
 	memcpy(fp->client_guid, conn->ClientGUID, SMB2_CLIENT_GUID_SIZE);
 
 	if (dh_info.type == DURABLE_REQ_V2 || dh_info.type == DURABLE_REQ) {
-		if (dh_info.type == DURABLE_REQ_V2 && dh_info.persistent)
+		if (dh_info.type == DURABLE_REQ_V2 && dh_info.persistent &&
+		    tcon->t_cap & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
 			fp->is_persistent = true;
 		else
 			fp->is_durable = true;