s3: libsmb: Add SMB2 calls cli_smb2_get_reparse_point_fnum_send()/cli_smb2_get_reparse_point_fnum_recv().

Allow reparse points to be queried over SMB2.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13159

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>

1 files changed, 100 insertions, 0 deletions

diff --git a/source3/libsmb/cli_smb2_fnum.c b/source3/libsmb/cli_smb2_fnum.c
index c40d6dd3a45..2d87b58d730 100644
--- a/source3/libsmb/cli_smb2_fnum.c
+++ b/source3/libsmb/cli_smb2_fnum.c
@@ -4337,3 +4337,103 @@ NTSTATUS cli_smb2_set_reparse_point_fnum_recv(struct tevent_req *req)
 {
         return tevent_req_simple_recv_ntstatus(req);
 }
+
+struct cli_smb2_get_reparse_point_fnum_state {
+	struct cli_state *cli;
+	uint16_t fnum;
+	struct smb2_hnd *ph;
+	DATA_BLOB output_buffer;
+};
+
+static void cli_smb2_get_reparse_point_fnum_done(struct tevent_req *subreq);
+
+struct tevent_req *cli_smb2_get_reparse_point_fnum_send(
+				TALLOC_CTX *mem_ctx,
+				struct tevent_context *ev,
+				struct cli_state *cli,
+				uint16_t fnum)
+{
+	struct tevent_req *req, *subreq;
+	struct cli_smb2_set_reparse_point_fnum_state *state = NULL;
+	NTSTATUS status;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct cli_smb2_get_reparse_point_fnum_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) < PROTOCOL_SMB2_02) {
+		tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+		return tevent_req_post(req, ev);
+	}
+
+	state->cli = cli;
+	state->fnum = fnum;
+
+	status = map_fnum_to_smb2_handle(cli, fnum, &state->ph);
+	if (tevent_req_nterror(req, status)) {
+		return tevent_req_post(req, ev);
+	}
+
+	subreq = smb2cli_ioctl_send(state, ev, state->cli->conn,
+			state->cli->timeout,
+			state->cli->smb2.session,
+			state->cli->smb2.tcon,
+			state->ph->fid_persistent, /* in_fid_persistent */
+			state->ph->fid_volatile, /* in_fid_volatile */
+			FSCTL_GET_REPARSE_POINT,
+			0, /* in_max_input_length */
+			NULL,
+			64*1024,
+			NULL,
+			SMB2_IOCTL_FLAG_IS_FSCTL);
+
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq,
+				cli_smb2_get_reparse_point_fnum_done,
+				req);
+
+	return req;
+}
+
+static void cli_smb2_get_reparse_point_fnum_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct cli_smb2_get_reparse_point_fnum_state *state = tevent_req_data(
+		req, struct cli_smb2_get_reparse_point_fnum_state);
+	NTSTATUS status;
+
+	status = smb2cli_ioctl_recv(subreq, state,
+				NULL,
+				&state->output_buffer);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		state->cli->raw_status = status;
+		return;
+	}
+	tevent_req_done(req);
+}
+
+NTSTATUS cli_smb2_get_reparse_point_fnum_recv(struct tevent_req *req,
+				TALLOC_CTX *mem_ctx,
+				DATA_BLOB *output)
+{
+	struct cli_smb2_get_reparse_point_fnum_state *state = tevent_req_data(
+		req, struct cli_smb2_get_reparse_point_fnum_state);
+
+	if (tevent_req_is_nterror(req, &state->cli->raw_status)) {
+		tevent_req_received(req);
+		return state->cli->raw_status;
+	}
+	*output = data_blob_dup_talloc(mem_ctx, state->output_buffer);
+	if (output->data == NULL) {
+		tevent_req_received(req);
+		return NT_STATUS_NO_MEMORY;
+	}
+	tevent_req_received(req);
+	return NT_STATUS_OK;
+}