| #ifndef TREE_WALK_H | 
 | #define TREE_WALK_H | 
 |  | 
 | struct tree_desc { | 
 | 	const void *buf; | 
 | 	unsigned long size; | 
 | }; | 
 |  | 
 | struct name_entry { | 
 | 	const unsigned char *sha1; | 
 | 	const char *path; | 
 | 	unsigned int mode; | 
 | 	int pathlen; | 
 | }; | 
 |  | 
 | void update_tree_entry(struct tree_desc *); | 
 | const unsigned char *tree_entry_extract(struct tree_desc *, const char **, unsigned int *); | 
 |  | 
 | /* Helper function that does both of the above and returns true for success */ | 
 | int tree_entry(struct tree_desc *, struct name_entry *); | 
 |  | 
 | void *fill_tree_descriptor(struct tree_desc *desc, const unsigned char *sha1); | 
 |  | 
 | typedef void (*traverse_callback_t)(int n, unsigned long mask, struct name_entry *entry, const char *base); | 
 |  | 
 | void traverse_trees(int n, struct tree_desc *t, const char *base, traverse_callback_t callback); | 
 |  | 
 | int get_tree_entry(const unsigned char *, const char *, unsigned char *, unsigned *); | 
 |  | 
 | #endif |