From: Ralph Boehme <slow@samba.org>
Date: Fri, 28 Nov 2025 11:12:52 +0000 (+0100)
Subject: smbd: restrict pure R leases on directories on CA shares
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=bcb806490703630fdc97c3e8730d391cb889f383;p=thirdparty%2Fsamba.git

smbd: restrict pure R leases on directories on CA shares

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Anoop C S <anoopcs@samba.org>
---

diff --git a/source3/smbd/open.c b/source3/smbd/open.c
index cac28775030..8ba54553aad 100644
--- a/source3/smbd/open.c
+++ b/source3/smbd/open.c
@@ -2683,6 +2683,17 @@ grant:
 		 * ignores the SMB2_LEASE_WRITE bit.
 		 */
 		granted &= ~SMB2_LEASE_WRITE;
+		if (fsp->conn->tcon->capabilities &
+		    SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
+		{
+			/*
+			 * Windows doesn't grant "pure" R leases in SO mode on
+			 * directories, we apply this restriction in CA mode. As
+			 * we also don't grant H leases in CA mode, set granted
+			 * to 0.
+			 */
+			granted = 0;
+		}
 	}
 
 	if (oplock_request == LEASE_OPLOCK) {