#include "cache.h"
+#include "object-store.h"
 #include "commit.h"
 #include "tag.h"
 #include "diff.h"
 #include "pack-bitmap.h"
 #include "sha1-lookup.h"
 #include "pack-objects.h"
+#include "commit-reach.h"
 
 struct bitmapped_commit {
        struct commit *commit;
 
        struct progress *progress;
        int show_progress;
-       unsigned char pack_checksum[20];
+       unsigned char pack_checksum[GIT_MAX_RAWSZ];
 };
 
 static struct bitmap_writer writer;
                        break;
 
                default:
-                       real_type = oid_object_info(&entry->idx.oid, NULL);
+                       real_type = oid_object_info(to_pack->repo,
+                                                   &entry->idx.oid, NULL);
                        break;
                }
 
        if (writer.show_progress)
                writer.progress = start_progress("Building bitmaps", writer.selected_nr);
 
-       init_revisions(&revs, NULL);
+       repo_init_revisions(to_pack->repo, &revs, NULL);
        revs.tag_objects = 1;
        revs.tree_objects = 1;
        revs.blob_objects = 1;
 
 void bitmap_writer_reuse_bitmaps(struct packing_data *to_pack)
 {
-       if (prepare_bitmap_git() < 0)
+       struct bitmap_index *bitmap_git;
+       if (!(bitmap_git = prepare_bitmap_git(to_pack->repo)))
                return;
 
        writer.reused = kh_init_sha1();
-       rebuild_existing_bitmaps(to_pack, writer.reused, writer.show_progress);
+       rebuild_existing_bitmaps(bitmap_git, to_pack, writer.reused,
+                                writer.show_progress);
+       /*
+        * NEEDSWORK: rebuild_existing_bitmaps() makes writer.reused reference
+        * some bitmaps in bitmap_git, so we can't free the latter.
+        */
 }
 
 static struct ewah_bitmap *find_reused_bitmap(const unsigned char *sha1)
                        sha1_pos(stored->commit->object.oid.hash, index, index_nr, sha1_access);
 
                if (commit_pos < 0)
-                       die("BUG: trying to write commit not in index");
+                       BUG("trying to write commit not in index");
 
                hashwrite_be32(f, commit_pos);
                hashwrite_u8(f, stored->xor_offset);
        if (options & BITMAP_OPT_HASH_CACHE)
                write_hash_cache(f, index, index_nr);
 
-       hashclose(f, NULL, CSUM_FSYNC);
+       finalize_hashfile(f, NULL, CSUM_HASH_IN_STREAM | CSUM_FSYNC | CSUM_CLOSE);
 
        if (adjust_shared_perm(tmp_file.buf))
                die_errno("unable to make temporary bitmap file readable");