From: James Jones <jejones3141@gmail.com>
Date: Tue, 5 Jan 2021 16:15:12 +0000 (-0600)
Subject: Add FR_DBUFF_COPY() analogous to FR_SBUFF_COPY() (#3834)
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1fee3512bd587e0ec372f599dc51a4dffa2a2d2c;p=thirdparty%2Ffreeradius-server.git

Add FR_DBUFF_COPY() analogous to FR_SBUFF_COPY() (#3834)
---

diff --git a/src/lib/util/dbuff.h b/src/lib/util/dbuff.h
index 67e408a713f..2c485f3263d 100644
--- a/src/lib/util/dbuff.h
+++ b/src/lib/util/dbuff.h
@@ -205,6 +205,25 @@ do { \
 	.parent 	= (_dbuff) \
 }
 
+/** Let the dbuff be advanced by operations on its child
+ *
+ *
+ * @param[in] _dbuff	to make an ephemeral copy of.
+ */
+#define FR_DBUFF_COPY(_dbuff) (fr_dbuff_t) \
+{ \
+	.buff		= (_dbuff)->buff, \
+	.start		= (_dbuff)->p, \
+	.end		= (_dbuff)->end, \
+	.p		= (_dbuff)->p, \
+	.is_const 	= (_dbuff)->is_const, \
+	.adv_parent 	= true, \
+	.shifted	= (_dbuff)->shifted, \
+	.extend		= (_dbuff)->extend, \
+	.uctx		= (_dbuff)->uctx, \
+	.parent 	= (_dbuff) \
+}
+
 /** @cond */
 
 /** Reserve _reserve bytes in the dbuff when passing it to another function