From d4ed2ed7fa36a2637f6f3b352ee2875abaf27092 Mon Sep 17 00:00:00 2001
From: Luca Dariz <luca@orpolo.org>
Date: Mon, 6 Jan 2025 14:46:49 +0100
Subject: header: add definitions for RPC presence and IDs

This allows to check at compilation time for some rpc (as done for
example in glibc for thread_set/get_name() and host_page_size()).
Also the IDs can be useful for testing purposes, or when assembling
messages manually.
Message-ID: <20250106134649.391487-1-luca@orpolo.org>
---
 header.c     | 14 ++++++++++++++
 mig_string.h |  1 +
 string.c     | 11 +++++++++++
 3 files changed, 26 insertions(+)

diff --git a/header.c b/header.c
index 8190376..4781e86 100644
--- a/header.c
+++ b/header.c
@@ -82,13 +82,20 @@ WriteEpilog(FILE *file, const char *protect)
 static void
 WriteUserRoutine(FILE *file, const routine_t *rt)
 {
+    char *defName = strupper(rt->rtUserName);
     fprintf(file, "\n");
     fprintf(file, "/* %s %s */\n", rtRoutineKindToStr(rt->rtKind), rt->rtName);
+    fprintf(file, "#define MIG_RPC_HAVE_%s\n", defName);
+    fprintf(file, "#define MIG_RPC_REQUEST_ID_%s %d\n",
+            defName, rt->rtNumber + SubsystemBase);
+    fprintf(file, "#define MIG_RPC_REPLY_ID_%s %d\n",
+            defName, rt->rtNumber + SubsystemBase + 100);
     WriteMigExternal(file);
     fprintf(file, "%s %s\n", ReturnTypeStr(rt), rt->rtUserName);
     fprintf(file, "(\n");
     WriteList(file, rt->rtArgs, WriteUserVarDecl, akbUserArg, ",\n", "\n");
     fprintf(file, ");\n");
+    strfree(defName);
 }
 
 void
@@ -137,14 +144,21 @@ WriteRoutineList(FILE *file, const statement_t *stats)
 static void
 WriteServerRoutine(FILE *file, const routine_t *rt)
 {
+    char *defName = strupper(rt->rtServerName);
     fprintf(file, "\n");
     fprintf(file, "/* %s %s */\n", rtRoutineKindToStr(rt->rtKind), rt->rtName);
+    fprintf(file, "#define MIG_RPC_HAVE_%s\n", defName);
+    fprintf(file, "#define MIG_RPC_REQUEST_ID_%s %d\n",
+            defName, rt->rtNumber + SubsystemBase);
+    fprintf(file, "#define MIG_RPC_REPLY_ID_%s %d\n",
+            defName, rt->rtNumber + SubsystemBase + 100);
     WriteMigExternal(file);
     fprintf(file, "%s %s\n", ReturnTypeStr(rt), rt->rtServerName);
     fprintf(file, "(\n");
     WriteList(file, rt->rtArgs, WriteServerVarDecl,
 	      akbServerArg, ",\n", "\n");
     fprintf(file, ");\n");
+    strfree(defName);
 }
 
 void
diff --git a/mig_string.h b/mig_string.h
index 920171c..fc1dd72 100644
--- a/mig_string.h
+++ b/mig_string.h
@@ -44,5 +44,6 @@ extern void strfree(string_t string);
 
 extern const char *strbool(bool v);
 extern const char *strstring(const_string_t string);
+extern char *strupper(const_string_t string);
 
 #endif	/* _MIG_STRING_H */
diff --git a/string.c b/string.c
index e182948..eeaaba2 100644
--- a/string.c
+++ b/string.c
@@ -27,6 +27,7 @@
 #include <sys/types.h>
 #include <stdbool.h>
 #include <stdlib.h>
+#include <ctype.h>
 
 #include "error.h"
 #include "mig_string.h"
@@ -77,3 +78,13 @@ strstring(const_string_t string)
     else
 	return string;
 }
+
+char *
+strupper(const_string_t string)
+{
+    string_t upper = strmake(string);
+
+    for (int i=0; i<strlen(upper); i++)
+        upper[i] = toupper(upper[i]);
+    return upper;
+}
-- 
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