X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=generator%2Fgenerator_daemon.ml;h=7e18e35a78efa86351ed4bca6153984100b807af;hb=ce5a8978b54f409de4347f16f7065b063cb47cf1;hp=8c3a548661ab30df902a63065557b124a6825f66;hpb=33b638109ed66ea360b53b80b1f407b3a5f5ec39;p=libguestfs.git

diff --git a/generator/generator_daemon.ml b/generator/generator_daemon.ml
index 8c3a548..7e18e35 100644
--- a/generator/generator_daemon.ml
+++ b/generator/generator_daemon.ml
@@ -122,18 +122,29 @@ and generate_daemon_actions () =
       let is_filein =
         List.exists (function FileIn _ -> true | _ -> false) args in
 
-      (* Reject unknown optional arguments. *)
+      (* Reject unknown optional arguments.
+       * Note this code is included even for calls with no optional
+       * args because the caller must not pass optargs_bitmask != 0
+       * in that case.
+       *)
       if optargs <> [] then (
         let len = List.length optargs in
         let mask = Int64.lognot (Int64.pred (Int64.shift_left 1L len)) in
         pr "  if (optargs_bitmask & UINT64_C(0x%Lx)) {\n" mask;
         if is_filein then
-          pr "    if (cancel_receive () != -2)\n";
+          pr "    cancel_receive ();\n";
         pr "    reply_with_error (\"unknown option in optional arguments bitmask (this can happen if a program is compiled against a newer version of libguestfs, then run against an older version of the daemon)\");\n";
         pr "    goto done;\n";
         pr "  }\n";
-        pr "\n"
+      ) else (
+        pr "  if (optargs_bitmask != 0) {\n";
+        if is_filein then
+          pr "    cancel_receive ();\n";
+        pr "    reply_with_error (\"header optargs_bitmask field must be passed as 0 for calls that don't take optional arguments\");\n";
+        pr "    goto done;\n";
+        pr "  }\n";
       );
+      pr "\n";
 
       (* Decode arguments. *)
       if args <> [] || optargs <> [] then (
@@ -141,8 +152,8 @@ and generate_daemon_actions () =
         pr "\n";
         pr "  if (!xdr_guestfs_%s_args (xdr_in, &args)) {\n" name;
         if is_filein then
-          pr "    if (cancel_receive () != -2)\n";
-        pr "      reply_with_error (\"daemon failed to decode procedure arguments\");\n";
+          pr "    cancel_receive ();\n";
+        pr "    reply_with_error (\"daemon failed to decode procedure arguments\");\n";
         pr "    goto done;\n";
         pr "  }\n";
         let pr_args n =
@@ -153,8 +164,8 @@ and generate_daemon_actions () =
           pr "                sizeof (char *) * (args.%s.%s_len+1));\n" n n;
           pr "  if (%s == NULL) {\n" n;
           if is_filein then
-            pr "    if (cancel_receive () != -2)\n";
-          pr "      reply_with_perror (\"realloc\");\n";
+            pr "    cancel_receive ();\n";
+          pr "    reply_with_perror (\"realloc\");\n";
           pr "    goto done;\n";
           pr "  }\n";
           pr "  %s[args.%s.%s_len] = NULL;\n" n n n;