io, database: preserve [am]time for cached and fetched files

preserve [am]time for all packages and indexes. this fixes the caching
error that 'apk update' is after new index is generated, but before
the used mirror is synchronized. this caused local apkindex timestamp
to be newer than file in mirror, when in fact it was outdated index.

this also fixes fetched files to have build timestamp so that files
going to .iso or custom images have proper timestamps (rsync with
appropriate --modify-window now works)

1 files changed, 7 insertions, 0 deletions

diff --git a/src/apk_io.h b/src/apk_io.h
index 6e2e37c..b0e15a4 100644
--- a/src/apk_io.h
+++ b/src/apk_io.h
@@ -33,6 +33,11 @@ struct apk_xattr {
 };
 APK_ARRAY(apk_xattr_array, struct apk_xattr);
 
+struct apk_file_meta {
+	time_t mtime, atime;
+};
+void apk_file_meta_to_fd(int fd, struct apk_file_meta *meta);
+
 struct apk_file_info {
 	char *name;
 	char *link_target;
@@ -50,6 +55,7 @@ struct apk_file_info {
 };
 
 struct apk_istream {
+	void (*get_meta)(void *stream, struct apk_file_meta *meta);
 	ssize_t (*read)(void *stream, void *ptr, size_t size);
 	void (*close)(void *stream);
 };
@@ -59,6 +65,7 @@ struct apk_istream {
 
 struct apk_bstream {
 	unsigned int flags;
+	void (*get_meta)(void *stream, struct apk_file_meta *meta);
 	apk_blob_t (*read)(void *stream, apk_blob_t token);
 	void (*close)(void *stream, size_t *size);
 };