repart,homed: split out disk cleanup macros into generic header

src/shared/fdisk-util.h

@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#if HAVE_LIBFDISK
+
+#include <libfdisk.h>
+
+#include "macro.h"
+
+DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(struct fdisk_context*, fdisk_unref_context, NULL);
+DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(struct fdisk_partition*, fdisk_unref_partition, NULL);
+DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(struct fdisk_parttype*, fdisk_unref_parttype, NULL);
+DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(struct fdisk_table*, fdisk_unref_table, NULL);
+
+#endif

src/shared/meson.build

@@ -118,6 +118,7 @@ shared_sources = files('''
         exit-status.h
         extension-release.c
         extension-release.h
+        fdisk-util.h
         fdset.c
         fdset.h
         fileio-label.c