prune: strategies for linked checkouts

diff --git a/cache.h b/cache.h
index bce1a7d44b67de5c320a60d6654b57170653f3fb..43c2e52585415cd1f2344c7bdf3ac442c8f2a1db 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -437,6 +437,7 @@ extern char *get_object_directory(void);
 extern char *get_index_file(void);
 extern char *get_graft_file(void);
 extern int set_git_dir(const char *path);
+extern int get_common_dir(struct strbuf *sb, const char *gitdir);
 extern const char *get_git_namespace(void);
 extern const char *strip_namespace(const char *namespaced_ref);
 extern const char *get_git_work_tree(void);
@@ -1498,6 +1499,8 @@ static inline ssize_t write_str_in_full(int fd, const char *str)
 {
        return write_in_full(fd, str, strlen(str));
 }
+__attribute__((format (printf, 3, 4)))
+extern int write_file(const char *path, int fatal, const char *fmt, ...);
 
 /* pager.c */
 extern void setup_pager(void);