Add infrastructure to support async SMB requests

(This used to be commit f5356825698a02df2d400b51dd95d1f857c83e81)

3 files changed, 93 insertions, 0 deletions

diff --git a/source3/include/async_smb.h b/source3/include/async_smb.h
new file mode 100644
index 0000000000..19408be74b
--- /dev/null
+++ b/source3/include/async_smb.h
@@ -0,0 +1,62 @@
+/*
+   Unix SMB/CIFS implementation.
+   Infrastructure for async SMB client requests
+   Copyright (C) Volker Lendecke 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"
+
+/*
+ * Create a fresh async smb request
+ */
+
+struct async_req *cli_request_new(TALLOC_CTX *mem_ctx,
+				  struct event_context *ev,
+				  struct cli_state *cli,
+				  uint8_t num_words, size_t num_bytes,
+				  struct cli_request **preq);
+
+/*
+ * Convenience function to get the SMB part out of an async_req
+ */
+
+struct cli_request *cli_request_get(struct async_req *req);
+
+/*
+ * Fetch an error out of a NBT packet
+ */
+
+NTSTATUS cli_pull_error(char *buf);
+
+/*
+ * Compatibility helper for the sync APIs: Fake NTSTATUS in cli->inbuf
+ */
+
+void cli_set_error(struct cli_state *cli, NTSTATUS status);
+
+/*
+ * Create a temporary event context for use in the sync helper functions
+ */
+
+struct cli_tmp_event *cli_tmp_event_ctx(TALLOC_CTX *mem_ctx,
+					struct cli_state *cli);
+
+/*
+ * Attach an event context permanently to a cli_struct
+ */
+
+NTSTATUS cli_add_event_ctx(struct cli_state *cli,
+			   struct event_context *event_ctx);
diff --git a/source3/include/client.h b/source3/include/client.h
index d29a2e7341..52dc513d65 100644
--- a/source3/include/client.h
+++ b/source3/include/client.h
@@ -192,6 +192,36 @@ struct cli_state {
 
 	bool force_dos_errors;
 	bool case_sensitive; /* False by default. */
+
+	struct event_context *event_ctx;
+	struct fd_event *fd_event;
+	char *evt_inbuf;
+
+	struct cli_request *outstanding_requests;
+};
+
+struct cli_request {
+	struct cli_request *prev, *next;
+	struct async_req *async;
+
+	struct cli_state *cli;
+
+	struct smb_trans_enc_state *enc_state;
+
+	uint16_t mid;
+
+	char *outbuf;
+	size_t sent;
+	char *inbuf;
+
+	union {
+		struct {
+			off_t ofs;
+			size_t size;
+			ssize_t received;
+			uint8_t *rcvbuf;
+		} read;
+	} data;
 };
 
 typedef struct file_info {
diff --git a/source3/include/includes.h b/source3/include/includes.h
index 8b94d7aed2..269baa5a9c 100644
--- a/source3/include/includes.h
+++ b/source3/include/includes.h
@@ -724,6 +724,7 @@ typedef char fstring[FSTRING_LEN];
 #include "talloc_stack.h"
 #include "memcache.h"
 #include "async_req.h"
+#include "async_smb.h"
 
 /* used in net.c */
 struct functable {