X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Flist.h;h=96d6237974726693512b71cbc12c12e9df7bcf4e;hb=b32ff512191bf873266ee8067f6f6c8a30c96a5e;hp=47f275a019403c873d0d52341f7ab93fdb120d48;hpb=c2f1db8f83618e60dcded8303d14656d7d26b436;p=elogind.git

diff --git a/src/shared/list.h b/src/shared/list.h
index 47f275a01..96d623797 100644
--- a/src/shared/list.h
+++ b/src/shared/list.h
@@ -123,3 +123,10 @@
 
 #define LIST_FOREACH_AFTER(name,i,p)                                    \
         for ((i) = (p)->name##_next; (i); (i) = (i)->name##_next)
+
+/* Loop starting from p->next until p->prev.
+   p can be adjusted meanwhile. */
+#define LIST_LOOP_BUT_ONE(name,i,head,p)                                \
+        for ((i) = (p)->name##_next ? (p)->name##_next : (head);        \
+             (i) != (p);                                                \
+             (i) = (i)->name##_next ? (i)->name##_next : (head))