2 files changed, 12 insertions, 0 deletions
diff --git a/src/utils.c b/src/utils.c
index 332c73587..f23f8c1fa 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -268,3 +268,13 @@ void xpthread_cond_destroy(pthread_cond_t *cond)
 	if ((err = pthread_cond_destroy(cond)))
 		FATAL("failed to destroy cond: %s\n", strerror(err));
 }
+
+int prefixcmp(const char *str, const char *prefix)
+{
+	for (; ; str++, prefix++)
+		if (!*prefix)
+			return 0;
+		else if (*str != *prefix)
+			return (unsigned char)*prefix - (unsigned char)*str;
+}
+
diff --git a/src/utils.h b/src/utils.h
index 77e143702..a6e26d191 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -103,4 +103,6 @@ void xpthread_mutex_destroy(pthread_mutex_t *mutex);
 
 void xpthread_cond_destroy(pthread_cond_t *cond);
 
+int prefixcmp(const char *str, const char *prefix);
+
 #endif