Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 77 insertions, 0 deletions

diff --git a/source3/locking/leases_util.c b/source3/locking/leases_util.c
new file mode 100644
index 0000000..9ae4081
--- /dev/null
+++ b/source3/locking/leases_util.c
@@ -0,0 +1,77 @@
+/*
+   Unix SMB/CIFS implementation.
+   Lease utility functions
+
+   Copyright (C) Jeremy Allison 2017.
+   Copyright (C) Stefan (metze) Metzmacher 2017.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#define DBGC_CLASS DBGC_LOCKING
+#include "includes.h"
+#include "../librpc/gen_ndr/open_files.h"
+#include "locking/proto.h"
+#include "smbd/globals.h"
+#include "locking/leases_db.h"
+
+uint32_t map_oplock_to_lease_type(uint16_t op_type)
+{
+	uint32_t ret;
+
+	switch(op_type) {
+	case BATCH_OPLOCK:
+	case BATCH_OPLOCK|EXCLUSIVE_OPLOCK:
+		ret = SMB2_LEASE_READ|SMB2_LEASE_WRITE|SMB2_LEASE_HANDLE;
+		break;
+	case EXCLUSIVE_OPLOCK:
+		ret = SMB2_LEASE_READ|SMB2_LEASE_WRITE;
+		break;
+	case LEVEL_II_OPLOCK:
+		ret = SMB2_LEASE_READ;
+		break;
+	default:
+		ret = SMB2_LEASE_NONE;
+		break;
+	}
+	return ret;
+}
+
+uint32_t fsp_lease_type(struct files_struct *fsp)
+{
+	NTSTATUS status;
+
+	if (fsp->oplock_type != LEASE_OPLOCK) {
+		uint32_t type = map_oplock_to_lease_type(fsp->oplock_type);
+		return type;
+	}
+
+	status = leases_db_get_current_state(
+		fsp_client_guid(fsp),
+		&fsp->lease->lease.lease_key,
+		&fsp->leases_db_seqnum,
+		&fsp->lease_type);
+	if (!NT_STATUS_IS_OK(status)) {
+		DBG_DEBUG("leases_db_get_current_state failed: %s\n",
+			  nt_errstr(status));
+		fsp->lease_type = 0; /* no lease */
+	}
+
+	return fsp->lease_type;
+}
+
+const struct GUID *fsp_client_guid(const files_struct *fsp)
+{
+	return &fsp->conn->sconn->client->global->client_guid;
+}