From: Steve French <stfrench@microsoft.com>
Date: Sun, 5 May 2019 17:25:12 -0500
Subject: [PATCH] smb3: Add protocol structs for change notify support
Git-commit: edf3ef3707c2321afdb4cde3eba756a687f3e8e7
Patch-mainline: v5.2-rc1
References: bsc#1144333
Add the SMB3 protocol flag definitions and structs for
change notify. Future patches will add the hooks to
allow it to be invoked from the client.
See MS-FSCC 2.6 and MS-SMB2 2.2.35
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Acked-by: Paulo Alcantara <palcantara@suse.de>
---
fs/cifs/smb2pdu.h | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
index aaf3f03c95d0..93dd3b431585 100644
--- a/fs/cifs/smb2pdu.h
+++ b/fs/cifs/smb2pdu.h
@@ -1145,6 +1145,42 @@ struct smb2_write_rsp {
__u8 Buffer[1];
} __packed;
+/* notify flags */
+#define SMB2_WATCH_TREE 0x0001
+
+/* notify completion filter flags. See MS-FSCC 2.6 and MS-SMB2 2.2.35 */
+#define FILE_NOTIFY_CHANGE_FILE_NAME 0x00000001
+#define FILE_NOTIFY_CHANGE_DIR_NAME 0x00000002
+#define FILE_NOTIFY_CHANGE_ATTRIBUTES 0x00000004
+#define FILE_NOTIFY_CHANGE_SIZE 0x00000008
+#define FILE_NOTIFY_CHANGE_LAST_WRITE 0x00000010
+#define FILE_NOTIFY_CHANGE_LAST_ACCESS 0x00000020
+#define FILE_NOTIFY_CHANGE_CREATION 0x00000040
+#define FILE_NOTIFY_CHANGE_EA 0x00000080
+#define FILE_NOTIFY_CHANGE_SECURITY 0x00000100
+#define FILE_NOTIFY_CHANGE_STREAM_NAME 0x00000200
+#define FILE_NOTIFY_CHANGE_STREAM_SIZE 0x00000400
+#define FILE_NOTIFY_CHANGE_STREAM_WRITE 0x00000800
+
+struct smb2_change_notify_req {
+ struct smb2_sync_hdr sync_hdr;
+ __le16 StructureSize;
+ __le16 Flags;
+ __le32 OutputBufferLength;
+ __u64 PersistentFileId; /* opaque endianness */
+ __u64 VolatileFileId; /* opaque endianness */
+ __le32 CompletionFilter;
+ __u32 Reserved;
+} __packed;
+
+struct smb2_change_notify_rsp {
+ struct smb2_sync_hdr sync_hdr;
+ __le16 StructureSize; /* Must be 9 */
+ __le16 OutputBufferOffset;
+ __le32 OutputBufferLength;
+ __u8 Buffer[1]; /* array of file notify structs */
+} __packed;
+
#define SMB2_LOCKFLAG_SHARED_LOCK 0x0001
#define SMB2_LOCKFLAG_EXCLUSIVE_LOCK 0x0002
#define SMB2_LOCKFLAG_UNLOCK 0x0004
--
2.22.0