From 0281117233dd91f93d3cbc01ef64247933549b52 Mon Sep 17 00:00:00 2001
From: Jozsef Kadlecsik <kadlec@netfilter.org>
Date: Sun, 20 Dec 2020 14:11:06 +0100
Subject: Backward compatibility: handle renaming nla_strlcpy to nla_strscpy

Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org>
---
 configure.ac                                            | 10 ++++++++++
 kernel/include/linux/netfilter/ipset/ip_set_compat.h.in |  5 +++++
 2 files changed, 15 insertions(+)

diff --git a/configure.ac b/configure.ac
index 2f06590..c777eed 100644
--- a/configure.ac
+++ b/configure.ac
@@ -725,6 +725,16 @@ else
 	AC_SUBST(HAVE_LOCKDEP_NFNL_IS_HELD, undef)
 fi
 
+AC_MSG_CHECKING([kernel source for nla_strscpy() in netlink.h])
+if test -f $ksourcedir/include/net/netlink.h && \
+   $GREP -q ' nla_strscpy' $ksourcedir/include/net/netlink.h; then
+	AC_MSG_RESULT(yes)
+	AC_SUBST(HAVE_NLA_STRSCPY, define)
+else
+	AC_MSG_RESULT(no)
+	AC_SUBST(HAVE_NLA_STRSCPY, undef)
+fi
+
 AC_MSG_CHECKING([kernel source for strscpy() in string.h])
 if test -f $ksourcedir/include/linux/timer.h && \
    $GREP -q ' strscpy' $ksourcedir/include/linux/string.h; then
diff --git a/kernel/include/linux/netfilter/ipset/ip_set_compat.h.in b/kernel/include/linux/netfilter/ipset/ip_set_compat.h.in
index eecf330..96a4cf4 100644
--- a/kernel/include/linux/netfilter/ipset/ip_set_compat.h.in
+++ b/kernel/include/linux/netfilter/ipset/ip_set_compat.h.in
@@ -61,6 +61,7 @@
 #@HAVE_NLA_POLICY_EXACT_LEN@ HAVE_NLA_POLICY_EXACT_LEN
 #@HAVE_KVZALLOC@ HAVE_KVZALLOC
 #@HAVE_GFP_KERNEL_ACCOUNT@ HAVE_GFP_KERNEL_ACCOUNT
+#@HAVE_NLA_STRSCPY@ HAVE_NLA_STRSCPY
 
 #ifdef HAVE_EXPORT_SYMBOL_GPL_IN_MODULE_H
 #include <linux/module.h>
@@ -454,6 +455,10 @@ static inline ssize_t strscpy(char * dest, const char * src, size_t count)
 }
 #endif
 
+#ifndef HAVE_NLA_STRSCPY
+#define nla_strscpy	nla_strlcpy
+#endif
+
 #ifndef smp_mb__before_atomic
 #define smp_mb__before_atomic()	smp_mb()
 #define smp_mb__after_atomic()	smp_mb()
-- 
cgit v1.2.3