+extern int write_cache(int newfd, struct cache_entry **cache, int entries);
+extern int cache_name_pos(const char *name, int namelen);
+extern int add_cache_entry(struct cache_entry *ce);
+extern int remove_file_from_cache(char *path);
+extern int cache_match_stat(struct cache_entry *ce, struct stat *st);
+
+#define MTIME_CHANGED 0x0001
+#define CTIME_CHANGED 0x0002
+#define OWNER_CHANGED 0x0004
+#define MODE_CHANGED 0x0008
+#define INODE_CHANGED 0x0010
+#define DATA_CHANGED 0x0020