dpkg: Update on-disk database to use a multiarch compliant layout

The usage of the new layout is conditional to a prior database
upgrade that should write a version number greater than 0 in
<admindir>/info/format.

The file is parsed when needed from pkg_infodb_get_format().

Based-on-patch-by: Raphaël Hertzog <hertzog@debian.org>
Patch-sponsored-by: Linaro Limited

Signed-off-by: Guillem Jover <guillem@debian.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/infodb.h b/src/infodb.h
index 338b5bccd..fbba824f7 100644
--- a/src/infodb.h
+++ b/src/infodb.h
@@ -25,6 +25,16 @@
 
 #include <dpkg/dpkg-db.h>
 
+enum pkg_infodb_format {
+	pkg_infodb_format_unknown = -1,
+	pkg_infodb_format_legacy = 0,
+	pkg_infodb_format_multiarch = 1,
+};
+
+enum pkg_infodb_format pkg_infodb_get_format(void);
+void pkg_infodb_set_format(enum pkg_infodb_format format);
+bool pkg_infodb_is_upgrading(void);
+
 bool pkg_infodb_has_file(struct pkginfo *pkg, struct pkgbin *pkgbin,
                          const char *name);