#define LOCK_DIE_ON_ERROR 1
#define LOCK_NODEREF 2
extern int unable_to_lock_error(const char *path, int err);
+extern void unable_to_lock_message(const char *path, int err,
+ struct strbuf *buf);
extern NORETURN void unable_to_lock_index_die(const char *path, int err);
extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);
extern int hold_lock_file_for_append(struct lock_file *, const char *path, int);
* NULL. If more than MAXDEPTH recursive symbolic lookups are needed,
* give up and return NULL.
*
- * errno is sometimes set on errors, but not always.
+ * errno is set to something meaningful on error.
*/
extern const char *resolve_ref_unsafe(const char *ref, unsigned char *sha1, int reading, int *flag);
extern char *resolve_refdup(const char *ref, unsigned char *sha1, int reading, int *flag);