From 1e3583475fbe6be46383866f3e061637f2f20c2a Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Fri, 25 Nov 2005 11:33:57 +0000
Subject: [PATCH] r11905: added SMB2_FLUSH as opcode 7. Thanks to metze and
 volker for help brainstorming this one. (This used to be commit
 a969ad592ae4cd8f7c66b1df4763fdc70328c967)

---
 source4/include/structs.h        |  1 +
 source4/libcli/smb2/config.mk    |  3 +-
 source4/libcli/smb2/flush.c      | 70 ++++++++++++++++++++++++++++++++
 source4/libcli/smb2/smb2.h       |  1 +
 source4/libcli/smb2/smb2_calls.h |  7 ++++
 source4/torture/smb2/connect.c   | 10 +++++
 6 files changed, 91 insertions(+), 1 deletion(-)
 create mode 100644 source4/libcli/smb2/flush.c

diff --git a/source4/include/structs.h b/source4/include/structs.h
index d5bc9de24a0..f593be6b842 100644
--- a/source4/include/structs.h
+++ b/source4/include/structs.h
@@ -357,4 +357,5 @@ struct smb2_read;
 struct smb2_write;
 struct smb2_find;
 struct smb2_trans;
+struct smb2_flush;
 struct smb2_handle;
diff --git a/source4/libcli/smb2/config.mk b/source4/libcli/smb2/config.mk
index ae203b952db..2af75cdcd99 100644
--- a/source4/libcli/smb2/config.mk
+++ b/source4/libcli/smb2/config.mk
@@ -15,5 +15,6 @@ OBJ_FILES = \
 	find.o \
 	trans.o \
 	logoff.o \
-	tdis.o
+	tdis.o \
+	flush.o
 REQUIRED_SUBSYSTEMS = LIBCLI_RAW LIBPACKET
diff --git a/source4/libcli/smb2/flush.c b/source4/libcli/smb2/flush.c
new file mode 100644
index 00000000000..f5d623c69c4
--- /dev/null
+++ b/source4/libcli/smb2/flush.c
@@ -0,0 +1,70 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   SMB2 client flush handling
+
+   Copyright (C) Andrew Tridgell 2005
+   
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "libcli/raw/libcliraw.h"
+#include "libcli/smb2/smb2.h"
+#include "libcli/smb2/smb2_calls.h"
+
+/*
+  send a flush request
+*/
+struct smb2_request *smb2_flush_send(struct smb2_tree *tree, struct smb2_flush *io)
+{
+	struct smb2_request *req;
+
+	req = smb2_request_init_tree(tree, SMB2_OP_FLUSH, 0x18, 0);
+	if (req == NULL) return NULL;
+
+	SSVAL(req->out.body, 0x02, 0); /* pad? */
+	SIVAL(req->out.body, 0x04, io->in.unknown);
+	smb2_push_handle(req->out.body+0x08, &io->in.handle);
+
+	smb2_transport_send(req);
+
+	return req;
+}
+
+
+/*
+  recv a flush reply
+*/
+NTSTATUS smb2_flush_recv(struct smb2_request *req, struct smb2_flush *io)
+{
+	if (!smb2_request_receive(req) || 
+	    smb2_request_is_error(req)) {
+		return smb2_request_destroy(req);
+	}
+
+	SMB2_CHECK_PACKET_RECV(req, 0x04, False);
+
+	return smb2_request_destroy(req);
+}
+
+/*
+  sync flush request
+*/
+NTSTATUS smb2_flush(struct smb2_tree *tree, struct smb2_flush *io)
+{
+	struct smb2_request *req = smb2_flush_send(tree, io);
+	return smb2_flush_recv(req, io);
+}
diff --git a/source4/libcli/smb2/smb2.h b/source4/libcli/smb2/smb2.h
index 3f17f994df5..6083fcb26e4 100644
--- a/source4/libcli/smb2/smb2.h
+++ b/source4/libcli/smb2/smb2.h
@@ -164,6 +164,7 @@ struct smb2_request {
 #define SMB2_OP_TDIS      0x04
 #define SMB2_OP_CREATE    0x05
 #define SMB2_OP_CLOSE     0x06
+#define SMB2_OP_FLUSH     0x07
 #define SMB2_OP_READ      0x08
 #define SMB2_OP_WRITE     0x09
 #define SMB2_OP_TRANS     0x0b
diff --git a/source4/libcli/smb2/smb2_calls.h b/source4/libcli/smb2/smb2_calls.h
index cd0e80f5ae8..03f65d947e4 100644
--- a/source4/libcli/smb2/smb2_calls.h
+++ b/source4/libcli/smb2/smb2_calls.h
@@ -356,3 +356,10 @@ struct smb2_trans {
 		DATA_BLOB out;
 	} out;
 };
+
+struct smb2_flush {
+	struct {
+		uint32_t unknown;
+		struct smb2_handle handle;
+	} in;
+};
diff --git a/source4/torture/smb2/connect.c b/source4/torture/smb2/connect.c
index a1215e3ae71..a4f4cb6ba40 100644
--- a/source4/torture/smb2/connect.c
+++ b/source4/torture/smb2/connect.c
@@ -69,6 +69,7 @@ static NTSTATUS torture_smb2_write(struct smb2_tree *tree, struct smb2_handle ha
 {
 	struct smb2_write w;
 	struct smb2_read r;
+	struct smb2_flush f;
 	NTSTATUS status;
 	DATA_BLOB data;
 	int i;
@@ -103,6 +104,15 @@ static NTSTATUS torture_smb2_write(struct smb2_tree *tree, struct smb2_handle ha
 
 	torture_smb2_all_info(tree, handle);
 
+	ZERO_STRUCT(f);
+	f.in.handle      = handle;
+
+	status = smb2_flush(tree, &f);
+	if (!NT_STATUS_IS_OK(status)) {
+		printf("flush failed - %s\n", nt_errstr(status));
+		return status;
+	}
+
 	ZERO_STRUCT(r);
 	r.in.length      = data.length;
 	r.in.offset      = 0;
-- 
2.34.1