Merge branch 'v4-0-test' of ssh://git.samba.org/data/git/samba into 4-0-abartlet

(This used to be commit 13a0941d3432dc7dae552048265ad1e762b781d4)

5 files changed, 145 insertions, 2 deletions

diff --git a/source4/libcli/raw/interfaces.h b/source4/libcli/raw/interfaces.h
index cf5a3aa25e..bad3743721 100644
--- a/source4/libcli/raw/interfaces.h
+++ b/source4/libcli/raw/interfaces.h
@@ -1862,7 +1862,8 @@ enum smb_lock_level {
 	RAW_LOCK_LOCK,
 	RAW_LOCK_UNLOCK,
 	RAW_LOCK_LOCKX,
-	RAW_LOCK_SMB2
+	RAW_LOCK_SMB2,
+	RAW_LOCK_SMB2_BREAK
 };
 
 /* the generic interface is defined to be equal to the lockingX interface */
@@ -1925,6 +1926,20 @@ union smb_lock {
 			uint16_t unknown1;
 		} out;
 	} smb2;
+
+	/* SMB2 Break */
+	struct smb2_break {
+		enum smb_lock_level level;
+		struct {
+			union smb_handle file;
+
+			/* static body buffer 24 (0x18) bytes */
+			uint8_t oplock_level;
+			uint8_t reserved;
+			uint32_t reserved2;
+			/* struct smb2_handle handle; */
+		} in, out;
+	} smb2_break;
 };
 
 
diff --git a/source4/libcli/smb2/break.c b/source4/libcli/smb2/break.c
new file mode 100644
index 0000000000..fe0cceb829
--- /dev/null
+++ b/source4/libcli/smb2/break.c
@@ -0,0 +1,74 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   SMB2 client oplock break handling
+
+   Copyright (C) Stefan Metzmacher 2008
+
+   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/>.
+*/
+
+#include "includes.h"
+#include "libcli/smb2/smb2.h"
+#include "libcli/smb2/smb2_calls.h"
+
+/*
+  send a break request
+*/
+struct smb2_request *smb2_break_send(struct smb2_tree *tree, struct smb2_break *io)
+{
+	struct smb2_request *req;
+
+	req = smb2_request_init_tree(tree, SMB2_OP_BREAK, 0x18, false, 0);
+	if (req == NULL) return NULL;
+
+	SCVAL(req->out.body, 0x02, io->in.oplock_level);
+	SCVAL(req->out.body, 0x03, io->in.reserved);
+	SIVAL(req->out.body, 0x04, io->in.reserved2);
+	smb2_push_handle(req->out.body+0x08, &io->in.file.handle);
+
+	smb2_transport_send(req);
+
+	return req;
+}
+
+
+/*
+  recv a break reply
+*/
+NTSTATUS smb2_break_recv(struct smb2_request *req, struct smb2_break *io)
+{
+	if (!smb2_request_receive(req) ||
+	    !smb2_request_is_ok(req)) {
+		return smb2_request_destroy(req);
+	}
+
+	SMB2_CHECK_PACKET_RECV(req, 0x18, false);
+
+	io->out.oplock_level	= CVAL(req->in.body, 0x02);
+	io->out.reserved	= CVAL(req->in.body, 0x03);
+	io->out.reserved2	= IVAL(req->in.body, 0x04);
+	smb2_pull_handle(req->in.body+0x08, &io->out.file.handle);
+
+	return smb2_request_destroy(req);
+}
+
+/*
+  sync flush request
+*/
+NTSTATUS smb2_break(struct smb2_tree *tree, struct smb2_break *io)
+{
+	struct smb2_request *req = smb2_break_send(tree, io);
+	return smb2_break_recv(req, io);
+}
diff --git a/source4/libcli/smb2/config.mk b/source4/libcli/smb2/config.mk
index e95997db54..18f6245a3e 100644
--- a/source4/libcli/smb2/config.mk
+++ b/source4/libcli/smb2/config.mk
@@ -6,5 +6,5 @@ LIBCLI_SMB2_OBJ_FILES = $(addprefix libcli/smb2/, \
 	transport.o request.o negprot.o session.o tcon.o \
 	create.o close.o connect.o getinfo.o write.o read.o \
 	setinfo.o find.o ioctl.o logoff.o tdis.o flush.o \
-	lock.o notify.o cancel.o keepalive.o)
+	lock.o notify.o cancel.o keepalive.o break.o)
 
diff --git a/source4/libcli/smb2/smb2.h b/source4/libcli/smb2/smb2.h
index 726df64090..ae66a6e0d3 100644
--- a/source4/libcli/smb2/smb2.h
+++ b/source4/libcli/smb2/smb2.h
@@ -21,6 +21,8 @@
 
 #include "libcli/raw/request.h"
 
+struct smb2_handle;
+
 struct smb2_options {
 	uint32_t timeout;
 };
@@ -58,6 +60,15 @@ struct smb2_transport {
 		void *private;
 		uint_t period;
 	} idle;
+
+	struct {
+		/* a oplock break request handler */
+		bool (*handler)(struct smb2_transport *transport,
+				const struct smb2_handle *handle,
+				uint8_t level, void *private_data);
+		/* private data passed to the oplock handler */
+		void *private_data;
+	} oplock;
 };
 
 
diff --git a/source4/libcli/smb2/transport.c b/source4/libcli/smb2/transport.c
index af19fcb0a9..8eb60a06f1 100644
--- a/source4/libcli/smb2/transport.c
+++ b/source4/libcli/smb2/transport.c
@@ -140,6 +140,44 @@ void smb2_transport_dead(struct smb2_transport *transport, NTSTATUS status)
 	}
 }
 
+static bool smb2_handle_oplock_break(struct smb2_transport *transport,
+				     const DATA_BLOB *blob)
+{
+	uint8_t *hdr;
+	uint16_t opcode;
+	uint64_t seqnum;
+
+	hdr = blob->data+NBT_HDR_SIZE;
+
+	if (blob->length < (SMB2_MIN_SIZE+0x18)) {
+		DEBUG(1,("Discarding smb2 oplock reply of size %u\n",
+			 blob->length));
+		return false;
+	}
+
+	opcode	= SVAL(hdr, SMB2_HDR_OPCODE);
+	seqnum	= BVAL(hdr, SMB2_HDR_MESSAGE_ID);
+
+	if ((opcode != SMB2_OP_BREAK) ||
+	    (seqnum != UINT64_MAX)) {
+		return false;
+	}
+
+	if (transport->oplock.handler) {
+		uint8_t *body = hdr+SMB2_HDR_BODY;
+		struct smb2_handle h;
+		uint8_t level;
+
+		level = CVAL(body, 0x02);
+		smb2_pull_handle(body+0x08, &h);
+
+		transport->oplock.handler(transport, &h, level,
+					  transport->oplock.private_data);
+	}
+
+	return true;
+}
+
 /*
   we have a full request in our receive buffer - match it to a pending request
   and process
@@ -167,6 +205,11 @@ static NTSTATUS smb2_transport_finish_recv(void *private, DATA_BLOB blob)
 		goto error;
 	}
 
+	if (smb2_handle_oplock_break(transport, &blob)) {
+		talloc_free(buffer);
+		return NT_STATUS_OK;
+	}
+
 	flags	= IVAL(hdr, SMB2_HDR_FLAGS);
 	seqnum	= BVAL(hdr, SMB2_HDR_MESSAGE_ID);