From 1ea6fb293a1e69e6fdd39e1d6b96a0af601d8542 Mon Sep 17 00:00:00 2001
From: Nathan Bossart <nathandbossart@gmail.com>
Date: Fri, 27 Jan 2023 21:16:34 -0800
Subject: [PATCH 2/4] move archive module exports to dedicated header

---
 contrib/basic_archive/basic_archive.c   |  2 +-
 src/backend/postmaster/pgarch.c         |  1 +
 src/backend/postmaster/shell_archive.c  |  2 +-
 src/backend/utils/misc/guc_tables.c     |  1 +
 src/include/postmaster/archive_module.h | 54 +++++++++++++++++++++++++
 src/include/postmaster/pgarch.h         | 39 ------------------
 6 files changed, 58 insertions(+), 41 deletions(-)
 create mode 100644 src/include/postmaster/archive_module.h

diff --git a/contrib/basic_archive/basic_archive.c b/contrib/basic_archive/basic_archive.c
index 3d29711a31..87bbb2174d 100644
--- a/contrib/basic_archive/basic_archive.c
+++ b/contrib/basic_archive/basic_archive.c
@@ -32,7 +32,7 @@
 
 #include "common/int.h"
 #include "miscadmin.h"
-#include "postmaster/pgarch.h"
+#include "postmaster/archive_module.h"
 #include "storage/copydir.h"
 #include "storage/fd.h"
 #include "utils/guc.h"
diff --git a/src/backend/postmaster/pgarch.c b/src/backend/postmaster/pgarch.c
index 36800127e8..eca02d5e74 100644
--- a/src/backend/postmaster/pgarch.c
+++ b/src/backend/postmaster/pgarch.c
@@ -34,6 +34,7 @@
 #include "lib/binaryheap.h"
 #include "libpq/pqsignal.h"
 #include "pgstat.h"
+#include "postmaster/archive_module.h"
 #include "postmaster/interrupt.h"
 #include "postmaster/pgarch.h"
 #include "storage/fd.h"
diff --git a/src/backend/postmaster/shell_archive.c b/src/backend/postmaster/shell_archive.c
index 806b81c3f2..b64297e3bb 100644
--- a/src/backend/postmaster/shell_archive.c
+++ b/src/backend/postmaster/shell_archive.c
@@ -20,7 +20,7 @@
 #include "access/xlog.h"
 #include "common/percentrepl.h"
 #include "pgstat.h"
-#include "postmaster/pgarch.h"
+#include "postmaster/archive_module.h"
 
 static bool shell_archive_configured(void);
 static bool shell_archive_file(const char *file, const char *path);
diff --git a/src/backend/utils/misc/guc_tables.c b/src/backend/utils/misc/guc_tables.c
index 4ac808ed22..5ebec364a2 100644
--- a/src/backend/utils/misc/guc_tables.c
+++ b/src/backend/utils/misc/guc_tables.c
@@ -52,6 +52,7 @@
 #include "parser/parse_expr.h"
 #include "parser/parser.h"
 #include "pgstat.h"
+#include "postmaster/archive_module.h"
 #include "postmaster/autovacuum.h"
 #include "postmaster/bgworker_internals.h"
 #include "postmaster/bgwriter.h"
diff --git a/src/include/postmaster/archive_module.h b/src/include/postmaster/archive_module.h
new file mode 100644
index 0000000000..099050c1ca
--- /dev/null
+++ b/src/include/postmaster/archive_module.h
@@ -0,0 +1,54 @@
+/*-------------------------------------------------------------------------
+ *
+ * archive_module.h
+ *		Exports for archive modules.
+ *
+ * Copyright (c) 2022-2023, PostgreSQL Global Development Group
+ *
+ * src/include/postmaster/archive_module.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef _ARCHIVE_MODULE_H
+#define _ARCHIVE_MODULE_H
+
+/*
+ * The value of the archive_library GUC.
+ */
+extern PGDLLIMPORT char *XLogArchiveLibrary;
+
+/*
+ * Archive module callbacks
+ *
+ * These callback functions should be defined by archive libraries and returned
+ * via _PG_archive_module_init().  ArchiveFileCB is the only required callback.
+ * For more information about the purpose of each callback, refer to the
+ * archive modules documentation.
+ */
+typedef bool (*ArchiveCheckConfiguredCB) (void);
+typedef bool (*ArchiveFileCB) (const char *file, const char *path);
+typedef void (*ArchiveShutdownCB) (void);
+
+typedef struct ArchiveModuleCallbacks
+{
+	ArchiveCheckConfiguredCB check_configured_cb;
+	ArchiveFileCB archive_file_cb;
+	ArchiveShutdownCB shutdown_cb;
+} ArchiveModuleCallbacks;
+
+/*
+ * Type of the shared library symbol _PG_archive_module_init that is looked
+ * up when loading an archive library.
+ */
+typedef void (*ArchiveModuleInit) (ArchiveModuleCallbacks *cb);
+
+extern PGDLLEXPORT void _PG_archive_module_init(ArchiveModuleCallbacks *cb);
+
+/*
+ * Since the logic for archiving via a shell command is in the core server
+ * and does not need to be loaded via a shared library, it has a special
+ * initialization function.
+ */
+extern void shell_archive_init(ArchiveModuleCallbacks *cb);
+
+#endif							/* _ARCHIVE_MODULE_H */
diff --git a/src/include/postmaster/pgarch.h b/src/include/postmaster/pgarch.h
index bcd51dfad6..3bd4fac71e 100644
--- a/src/include/postmaster/pgarch.h
+++ b/src/include/postmaster/pgarch.h
@@ -33,43 +33,4 @@ extern void PgArchiverMain(void) pg_attribute_noreturn();
 extern void PgArchWakeup(void);
 extern void PgArchForceDirScan(void);
 
-/*
- * The value of the archive_library GUC.
- */
-extern PGDLLIMPORT char *XLogArchiveLibrary;
-
-/*
- * Archive module callbacks
- *
- * These callback functions should be defined by archive libraries and returned
- * via _PG_archive_module_init().  ArchiveFileCB is the only required callback.
- * For more information about the purpose of each callback, refer to the
- * archive modules documentation.
- */
-typedef bool (*ArchiveCheckConfiguredCB) (void);
-typedef bool (*ArchiveFileCB) (const char *file, const char *path);
-typedef void (*ArchiveShutdownCB) (void);
-
-typedef struct ArchiveModuleCallbacks
-{
-	ArchiveCheckConfiguredCB check_configured_cb;
-	ArchiveFileCB archive_file_cb;
-	ArchiveShutdownCB shutdown_cb;
-} ArchiveModuleCallbacks;
-
-/*
- * Type of the shared library symbol _PG_archive_module_init that is looked
- * up when loading an archive library.
- */
-typedef void (*ArchiveModuleInit) (ArchiveModuleCallbacks *cb);
-
-extern PGDLLEXPORT void _PG_archive_module_init(ArchiveModuleCallbacks *cb);
-
-/*
- * Since the logic for archiving via a shell command is in the core server
- * and does not need to be loaded via a shared library, it has a special
- * initialization function.
- */
-extern void shell_archive_init(ArchiveModuleCallbacks *cb);
-
 #endif							/* _PGARCH_H */
-- 
2.25.1

