CIFS: Handle SMB2 lock flags
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index b1dedf8..e4a59d1f 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -537,7 +537,15 @@
return rc;
}
+static bool
+smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
+{
+ return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
+ ob1->fid.volatile_fid == ob2->fid.volatile_fid;
+}
+
struct smb_version_operations smb21_operations = {
+ .compare_fids = smb2_compare_fids,
.setup_request = smb2_setup_request,
.setup_async_request = smb2_setup_async_request,
.check_receive = smb2_check_receive,
@@ -598,6 +606,10 @@
struct smb_version_values smb21_values = {
.version_string = SMB21_VERSION_STRING,
+ .large_lock_type = 0,
+ .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
+ .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
+ .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
.header_size = sizeof(struct smb2_hdr),
.max_header_size = MAX_SMB2_HDR_SIZE,
.read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
index 3c8e99e..d2d132e 100644
--- a/fs/cifs/smb2pdu.h
+++ b/fs/cifs/smb2pdu.h
@@ -526,6 +526,11 @@
__u8 Buffer[1];
} __packed;
+#define SMB2_LOCKFLAG_SHARED_LOCK 0x0001
+#define SMB2_LOCKFLAG_EXCLUSIVE_LOCK 0x0002
+#define SMB2_LOCKFLAG_UNLOCK 0x0004
+#define SMB2_LOCKFLAG_FAIL_IMMEDIATELY 0x0010
+
struct smb2_echo_req {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 4 */
