tree-wide: remove Lennart's copyright lines

[elogind.git] / src / basic / list.h

diff --git a/src/basic/list.h b/src/basic/list.h
index 5962aa42113b5d425cd181241a7f17da9ef43439..643e0bea8887dffe74dce0e0fce596f00a48b40b 100644 (file)
--- a/src/basic/list.h
+++ b/src/basic/list.h
@@ -1,24 +1,6 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
 #pragma once
 
-/***
-  This file is part of systemd.
-
-  Copyright 2010 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
 /* The head of the linked list. Use this in the structure that shall
  * contain the head of the linked list */
 #define LIST_HEAD(t,name)                                               \
@@ -142,6 +124,8 @@
                 } else {                                                \
                         if ((_b->name##_prev = _a->name##_prev))        \
                                 _b->name##_prev->name##_next = _b;      \
+                        else                                            \
+                                *_head = _b;                            \
                         _b->name##_next = _a;                           \
                         _a->name##_prev = _b;                           \
                 }                                                       \
@@ -180,3 +164,6 @@
         for ((i) = (p)->name##_next ? (p)->name##_next : (head);        \
              (i) != (p);                                                \
              (i) = (i)->name##_next ? (i)->name##_next : (head))
+
+#define LIST_IS_EMPTY(head)                                             \
+        (!(head))