fs-metawrap: Set FS_METADATA_OBJECTID on fs_get_nlinks()

This fixes obox + fs-posix to work with lazy_expunge_only_last_instance=yes

diff --git a/src/lib-fs/fs-metawrap.c b/src/lib-fs/fs-metawrap.c
index 8d0084e5c7d784e5c5b91773127f3dc333a657fb..039eda0b993b248c9d8d386d44b7d17bbb71437e 100644 (file)
--- a/src/lib-fs/fs-metawrap.c
+++ b/src/lib-fs/fs-metawrap.c
@@ -479,6 +479,20 @@ static int fs_metawrap_copy(struct fs_file *_src, struct fs_file *_dest)
                return fs_default_copy(_src, _dest);
 }
 
+static int fs_metawrap_get_nlinks(struct fs_file *file, nlink_t *nlinks_r)
+{
+       if (fs_get_nlinks(file->parent, nlinks_r) < 0)
+               return -1;
+
+       /* Used by obox & fs-posix to set MAIL_FETCH_REFCOUNT_ID for
+          lazy_expunge: */
+       const char *object_id =
+               fs_lookup_loaded_metadata(file->parent, FS_METADATA_OBJECTID);
+       if (object_id != NULL)
+               fs_default_set_metadata(file, FS_METADATA_OBJECTID, object_id);
+       return 0;
+}
+
 const struct fs fs_class_metawrap = {
        .name = "metawrap",
        .v = {
@@ -514,6 +528,6 @@ const struct fs fs_class_metawrap = {
                .iter_next = fs_wrapper_iter_next,
                .iter_deinit = fs_wrapper_iter_deinit,
                .switch_ioloop = NULL,
-               .get_nlinks = fs_wrapper_get_nlinks,
+               .get_nlinks = fs_metawrap_get_nlinks,
        }
 };