+static inline void *xcalloc(size_t nmemb, size_t size)
+{
+ void *ret = calloc(nmemb, size);
+ if (!ret)
+ die("Out of memory, calloc failed");
+ return ret;
+}
+
+struct checkout {
+ const char *base_dir;
+ int base_dir_len;
+ unsigned force:1,
+ quiet:1,
+ not_new:1,
+ refresh_cache:1;
+};
+
+extern int checkout_entry(struct cache_entry *ce, struct checkout *state);
+
+extern struct alternate_object_database {
+ char *base;
+ char *name;
+} *alt_odb;
+extern void prepare_alt_odb(void);
+
+extern struct packed_git {
+ struct packed_git *next;
+ unsigned long index_size;
+ unsigned long pack_size;
+ unsigned int *index_base;
+ void *pack_base;
+ unsigned int pack_last_used;
+ unsigned int pack_use_cnt;
+ char pack_name[0]; /* something like ".git/objects/pack/xxxxx.pack" */
+} *packed_git;
+extern void prepare_packed_git(void);
+extern int use_packed_git(struct packed_git *);
+extern void unuse_packed_git(struct packed_git *);
+extern struct packed_git *add_packed_git(char *, int);
+extern int num_packed_objects(const struct packed_git *p);
+extern int nth_packed_object_sha1(const struct packed_git *, int, unsigned char*);
+