Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 170 insertions, 0 deletions

diff --git a/source3/libsmb/clioplock.c b/source3/libsmb/clioplock.c
new file mode 100644
index 0000000..01c98f1
--- /dev/null
+++ b/source3/libsmb/clioplock.c
@@ -0,0 +1,170 @@
+/*
+   Unix SMB/CIFS implementation.
+   SMB client oplock functions
+   Copyright (C) Andrew Tridgell 2001
+
+   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 "../lib/util/tevent_ntstatus.h"
+#include "async_smb.h"
+#include "libsmb/libsmb.h"
+#include "../libcli/smb/smbXcli_base.h"
+
+struct cli_smb_oplock_break_waiter_state {
+	uint16_t fnum;
+	uint8_t level;
+};
+
+static void cli_smb_oplock_break_waiter_done(struct tevent_req *subreq);
+
+struct tevent_req *cli_smb_oplock_break_waiter_send(TALLOC_CTX *mem_ctx,
+						    struct tevent_context *ev,
+						    struct cli_state *cli)
+{
+	struct tevent_req *req, *subreq;
+	struct cli_smb_oplock_break_waiter_state *state;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct cli_smb_oplock_break_waiter_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	/*
+	 * Create a fake SMB request that we will never send out. This is only
+	 * used to be set into the pending queue with the right mid.
+	 */
+	subreq = smb1cli_req_create(mem_ctx, ev, cli->conn, 0, 0, 0, 0, 0, 0,
+				    0, NULL, NULL, 0, NULL, 0, NULL);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	smb1cli_req_set_mid(subreq, 0xffff);
+
+	if (!smbXcli_req_set_pending(subreq)) {
+		tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, cli_smb_oplock_break_waiter_done, req);
+	return req;
+}
+
+static void cli_smb_oplock_break_waiter_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct cli_smb_oplock_break_waiter_state *state = tevent_req_data(
+		req, struct cli_smb_oplock_break_waiter_state);
+	struct iovec *iov;
+	uint8_t wct;
+	uint16_t *vwv;
+	NTSTATUS status;
+
+	status = smb1cli_req_recv(subreq, state,
+				  &iov, /* piov */
+				  NULL, /* phdr */
+				  &wct,
+				  &vwv,
+				  NULL, /* pvwv_offset */
+				  NULL, /* pnum_bytes */
+				  NULL, /* pbytes */
+				  NULL, /* pbytes_offset */
+				  NULL, /* pinbuf */
+				  NULL, 0); /* expected */
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		tevent_req_nterror(req, status);
+		return;
+	}
+	if (wct < 8) {
+		tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+		return;
+	}
+	state->fnum = SVAL(vwv+2, 0);
+	state->level = CVAL(vwv+3, 1);
+	tevent_req_done(req);
+}
+
+NTSTATUS cli_smb_oplock_break_waiter_recv(struct tevent_req *req,
+					  uint16_t *pfnum,
+					  uint8_t *plevel)
+{
+	struct cli_smb_oplock_break_waiter_state *state = tevent_req_data(
+		req, struct cli_smb_oplock_break_waiter_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		return status;
+	}
+	*pfnum = state->fnum;
+	*plevel = state->level;
+	return NT_STATUS_OK;
+}
+
+/****************************************************************************
+send an ack for an oplock break request
+****************************************************************************/
+
+struct cli_oplock_ack_state {
+	uint8_t dummy;
+};
+
+static void cli_oplock_ack_done(struct tevent_req *subreq);
+
+struct tevent_req *cli_oplock_ack_send(TALLOC_CTX *mem_ctx,
+				       struct tevent_context *ev,
+				       struct cli_state *cli,
+				       uint16_t fnum, uint8_t level)
+{
+	struct tevent_req *req, *subreq;
+	struct cli_oplock_ack_state *state;
+
+	req = tevent_req_create(mem_ctx, &state, struct cli_oplock_ack_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	subreq = cli_lockingx_send(
+		state,				/* mem_ctx */
+		ev,				/* tevent_context */
+		cli,				/* cli */
+		fnum,				/* fnum */
+		LOCKING_ANDX_OPLOCK_RELEASE,	/* typeoflock */
+		level,				/* newoplocklevel */
+		0,				/* timeout */
+		0,				/* num_unlocks */
+		NULL,				/* unlocks */
+		0,				/* num_locks */
+		NULL);				/* locks */
+
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, cli_oplock_ack_done, req);
+	return req;
+}
+
+static void cli_oplock_ack_done(struct tevent_req *subreq)
+{
+	NTSTATUS status = cli_lockingx_recv(subreq);
+	tevent_req_simple_finish_ntstatus(subreq, status);
+}
+
+NTSTATUS cli_oplock_ack_recv(struct tevent_req *req)
+{
+	return tevent_req_simple_recv_ntstatus(req);
+}
+