1 files changed, 12 insertions, 4 deletions
diff --git a/util.h b/util.h
index f65e9f5..4fd5962 100644
--- a/util.h
+++ b/util.h
@@ -15,6 +15,7 @@
 #include <dirent.h>
 #include <fcntl.h>
 #include <fnmatch.h>
+#include <regex.h>
 #include <stdbool.h>
 #include <sys/stat.h>
 
@@ -30,10 +31,6 @@
 #	define FNM_CASEFOLD FNM_IGNORECASE
 #endif
 
-#ifndef O_DIRECTORY
-#	define O_DIRECTORY 0
-#endif
-
 #ifndef S_ISDOOR
 #	define S_ISDOOR(mode) false
 #endif
@@ -80,4 +77,15 @@ int redirect(int fd, const char *path, int flags, ...);
  */
 int dup_cloexec(int fd);
 
+/**
+ * Dynamically allocate a regex error message.
+ *
+ * @param err
+ *         The error code to stringify.
+ * @param regex
+ *         The (partially) compiled regex.
+ * @return A human-readable description of the error, allocated with malloc().
+ */
+char *xregerror(int err, const regex_t *regex);
+
 #endif // BFS_UTIL_H