--- /dev/null
+(* libguestfs
+ * Copyright (C) 2009-2010 Red Hat Inc.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *)
+
+(* Please read generator/README first. *)
+
+open Printf
+
+open Generator_types
+open Generator_utils
+open Generator_pr
+open Generator_docstrings
+open Generator_optgroups
+open Generator_actions
+open Generator_structs
+
+(* Generate the protocol (XDR) file, 'guestfs_protocol.x' and
+ * indirectly 'guestfs_protocol.h' and 'guestfs_protocol.c'.
+ *
+ * We have to use an underscore instead of a dash because otherwise
+ * rpcgen generates incorrect code.
+ *
+ * This header is NOT exported to clients, but see also generate_structs_h.
+ *)
+let generate_xdr () =
+ generate_header CStyle LGPLv2plus;
+
+ (* This has to be defined to get around a limitation in Sun's rpcgen. *)
+ pr "typedef string guestfs_str<>;\n";
+ pr "\n";
+
+ (* Internal structures. *)
+ List.iter (
+ function
+ | typ, cols ->
+ pr "struct guestfs_int_%s {\n" typ;
+ List.iter (function
+ | name, FChar -> pr " char %s;\n" name
+ | name, FString -> pr " string %s<>;\n" name
+ | name, FBuffer -> pr " opaque %s<>;\n" name
+ | name, FUUID -> pr " opaque %s[32];\n" name
+ | name, (FInt32|FUInt32) -> pr " int %s;\n" name
+ | name, (FInt64|FUInt64|FBytes) -> pr " hyper %s;\n" name
+ | name, FOptPercent -> pr " float %s;\n" name
+ ) cols;
+ pr "};\n";
+ pr "\n";
+ pr "typedef struct guestfs_int_%s guestfs_int_%s_list<>;\n" typ typ;
+ pr "\n";
+ ) structs;
+
+ List.iter (
+ fun (shortname, style, _, _, _, _, _) ->
+ let name = "guestfs_" ^ shortname in
+
+ (match snd style with
+ | [] -> ()
+ | args ->
+ pr "struct %s_args {\n" name;
+ List.iter (
+ function
+ | Pathname n | Device n | Dev_or_Path n | String n | Key n ->
+ pr " string %s<>;\n" n
+ | OptString n -> pr " guestfs_str *%s;\n" n
+ | StringList n | DeviceList n -> pr " guestfs_str %s<>;\n" n
+ | Bool n -> pr " bool %s;\n" n
+ | Int n -> pr " int %s;\n" n
+ | Int64 n -> pr " hyper %s;\n" n
+ | BufferIn n ->
+ pr " opaque %s<>;\n" n
+ | FileIn _ | FileOut _ -> ()
+ ) args;
+ pr "};\n\n"
+ );
+ (match fst style with
+ | RErr -> ()
+ | RInt n ->
+ pr "struct %s_ret {\n" name;
+ pr " int %s;\n" n;
+ pr "};\n\n"
+ | RInt64 n ->
+ pr "struct %s_ret {\n" name;
+ pr " hyper %s;\n" n;
+ pr "};\n\n"
+ | RBool n ->
+ pr "struct %s_ret {\n" name;
+ pr " bool %s;\n" n;
+ pr "};\n\n"
+ | RConstString _ | RConstOptString _ ->
+ failwithf "RConstString|RConstOptString cannot be used by daemon functions"
+ | RString n ->
+ pr "struct %s_ret {\n" name;
+ pr " string %s<>;\n" n;
+ pr "};\n\n"
+ | RStringList n ->
+ pr "struct %s_ret {\n" name;
+ pr " guestfs_str %s<>;\n" n;
+ pr "};\n\n"
+ | RStruct (n, typ) ->
+ pr "struct %s_ret {\n" name;
+ pr " guestfs_int_%s %s;\n" typ n;
+ pr "};\n\n"
+ | RStructList (n, typ) ->
+ pr "struct %s_ret {\n" name;
+ pr " guestfs_int_%s_list %s;\n" typ n;
+ pr "};\n\n"
+ | RHashtable n ->
+ pr "struct %s_ret {\n" name;
+ pr " guestfs_str %s<>;\n" n;
+ pr "};\n\n"
+ | RBufferOut n ->
+ pr "struct %s_ret {\n" name;
+ pr " opaque %s<>;\n" n;
+ pr "};\n\n"
+ );
+ ) daemon_functions;
+
+ (* Table of procedure numbers. *)
+ pr "enum guestfs_procedure {\n";
+ List.iter (
+ fun (shortname, _, proc_nr, _, _, _, _) ->
+ pr " GUESTFS_PROC_%s = %d,\n" (String.uppercase shortname) proc_nr
+ ) daemon_functions;
+ pr " GUESTFS_PROC_NR_PROCS\n";
+ pr "};\n";
+ pr "\n";
+
+ (* Having to choose a maximum message size is annoying for several
+ * reasons (it limits what we can do in the API), but it (a) makes
+ * the protocol a lot simpler, and (b) provides a bound on the size
+ * of the daemon which operates in limited memory space.
+ *)
+ pr "const GUESTFS_MESSAGE_MAX = %d;\n" (4 * 1024 * 1024);
+ pr "\n";
+
+ (* Message header, etc. *)
+ pr "\
+/* The communication protocol is now documented in the guestfs(3)
+ * manpage.
+ */
+
+const GUESTFS_PROGRAM = 0x2000F5F5;
+const GUESTFS_PROTOCOL_VERSION = 2;
+
+/* These constants must be larger than any possible message length. */
+const GUESTFS_LAUNCH_FLAG = 0xf5f55ff5;
+const GUESTFS_CANCEL_FLAG = 0xffffeeee;
+const GUESTFS_PROGRESS_FLAG = 0xffff5555;
+
+enum guestfs_message_direction {
+ GUESTFS_DIRECTION_CALL = 0, /* client -> daemon */
+ GUESTFS_DIRECTION_REPLY = 1 /* daemon -> client */
+};
+
+enum guestfs_message_status {
+ GUESTFS_STATUS_OK = 0,
+ GUESTFS_STATUS_ERROR = 1
+};
+
+";
+
+ pr "const GUESTFS_ERROR_LEN = %d;\n" (64 * 1024);
+ pr "\n";
+
+ pr "\
+struct guestfs_message_error {
+ int linux_errno; /* Linux errno if available. */
+ string error_message<GUESTFS_ERROR_LEN>;
+};
+
+struct guestfs_message_header {
+ unsigned prog; /* GUESTFS_PROGRAM */
+ unsigned vers; /* GUESTFS_PROTOCOL_VERSION */
+ guestfs_procedure proc; /* GUESTFS_PROC_x */
+ guestfs_message_direction direction;
+ unsigned serial; /* message serial number */
+ guestfs_message_status status;
+};
+
+const GUESTFS_MAX_CHUNK_SIZE = 8192;
+
+struct guestfs_chunk {
+ int cancel; /* if non-zero, transfer is cancelled */
+ /* data size is 0 bytes if the transfer has finished successfully */
+ opaque data<GUESTFS_MAX_CHUNK_SIZE>;
+};
+
+/* Progress notifications. Daemon self-limits these messages to
+ * at most one per second. The daemon can send these messages
+ * at any time, and the caller should discard unexpected messages.
+ * 'position' and 'total' have undefined units; however they may
+ * have meaning for some calls.
+ *
+ * NB. guestfs___recv_from_daemon assumes the XDR-encoded
+ * structure is 24 bytes long.
+ */
+struct guestfs_progress {
+ guestfs_procedure proc; /* @0: GUESTFS_PROC_x */
+ unsigned serial; /* @4: message serial number */
+ unsigned hyper position; /* @8: 0 <= position <= total */
+ unsigned hyper total; /* @16: total size of operation */
+ /* @24: size of structure */
+};
+"
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