#define MIDX_WRITE_BITMAP_HASH_CACHE (1 << 3)
const unsigned char *get_midx_checksum(struct multi_pack_index *m);
-char *get_midx_filename(const char *object_dir);
-char *get_midx_rev_filename(struct multi_pack_index *m);
+void get_midx_filename(struct strbuf *out, const char *object_dir);
+void get_midx_rev_filename(struct strbuf *out, struct multi_pack_index *m);
struct multi_pack_index *load_multi_pack_index(const char *object_dir, int local);
int prepare_midx_pack(struct repository *r, struct multi_pack_index *m, uint32_t pack_int_id);