[SMB3] Add SMB3 protocol flags and structs for change notify
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Message ID CAH2r5mt+ogjdc9w+ppvu+GwWfojFOK_izStTkOgjs07bXVbO2A@mail.gmail.com
State New
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  • [SMB3] Add SMB3 protocol flags and structs for change notify
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Commit Message

Steve French May 5, 2019, 10:28 p.m. UTC
See MS-FSCC 2.6 and MS-SMB2 2.2.35

Comments

Steve French May 5, 2019, 11:13 p.m. UTC | #1
Minor update with feedback from Ronnie


On Sun, May 5, 2019 at 5:28 PM Steve French <smfrench@gmail.com> wrote:
>
> See MS-FSCC 2.6 and MS-SMB2 2.2.35
>
>
>
> --
> Thanks,
>
> Steve

Patch
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From afe5486a31330a181eb0fd1400d9d41242cbb51d Mon Sep 17 00:00:00 2001
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

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>
---
 fs/cifs/smb2pdu.h | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
index 868b0056808c..6bbfaec42263 100644
--- a/fs/cifs/smb2pdu.h
+++ b/fs/cifs/smb2pdu.h
@@ -1148,6 +1148,40 @@  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 {
+	__le16	StructureSize;
+	__le16	Flags;
+	__le32	OutputBufferLength;
+	__u64	PersistentFileId; /* opaque endianness */
+	__u64	VolatileFileId; /* opaque endianness */
+	__le32	CompletionFilter;
+	__u32	Reserved;
+} __packed;
+
+struct smb2_change_notify_rsp {
+	__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
-- 
2.20.1