From c917694803ba8dac4563857b5b81528f960235bc Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 14 May 2012 22:41:17 +0200
Subject: [PATCH] sd-login: update header docs a bit (cherry picked from
 commit ee1f44bd9a63e776810a31bd8394e8d481b6c34d)

---
 src/systemd/sd-login.h |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/systemd/sd-login.h b/src/systemd/sd-login.h
index 6e99cfc..315700e 100644
--- a/src/systemd/sd-login.h
+++ b/src/systemd/sd-login.h
@@ -34,7 +34,9 @@ extern "C" {
  * Instead of returning an empty string array or empty uid array, we
  * may return NULL.
  *
- * Free the data we return with libc free().
+ * Free the data the library returns with libc free(). String arrays
+ * are NULL terminated and you need to free the array itself in
+ * addition to the strings contained.
  *
  * We return error codes as negative errno, kernel-style. 0 or
  * positive on success.