travis-ci: create the cache directory early in the build process

diff --git a/lockfile.h b/lockfile.h
index d26ad27b2b2df207872cb20ce9cc0299ee0aff8e..572064939c718281b56abda7757bb21d35f42de3 100644 (file)
--- a/lockfile.h
+++ b/lockfile.h
@@ -129,10 +129,16 @@ struct lock_file {
 /*
  * If a lock is already taken for the file, `die()` with an error
  * message. If this flag is not specified, trying to lock a file that
- * is already locked returns -1 to the caller.
+ * is already locked silently returns -1 to the caller, or ...
  */
 #define LOCK_DIE_ON_ERROR 1
 
+/*
+ * ... this flag can be passed instead to return -1 and give the usual
+ * error message upon an error.
+ */
+#define LOCK_REPORT_ON_ERROR 4
+
 /*
  * Usually symbolic links in the destination path are resolved. This
  * means that (1) the lockfile is created by adding ".lock" to the
@@ -169,6 +175,14 @@ static inline int hold_lock_file_for_update(
        return hold_lock_file_for_update_timeout(lk, path, flags, 0);
 }
 
+/*
+ * Return a nonzero value iff `lk` is currently locked.
+ */
+static inline int is_lock_file_locked(struct lock_file *lk)
+{
+       return is_tempfile_active(&lk->tempfile);
+}
+
 /*
  * Append an appropriate error message to `buf` following the failure
  * of `hold_lock_file_for_update()` to lock `path`. `err` should be the