netdev - [PATCH] libipt_ULOG.c - include strings.h for the definition of ffs()

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Message-Id: <20200421081507.108023-1-zenczykowski@gmail.com>
Date:   Tue, 21 Apr 2020 01:15:07 -0700
From:   Maciej Żenczykowski <zenczykowski@...il.com>
To:     Maciej Żenczykowski <maze@...gle.com>,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Florian Westphal <fw@...len.de>
Cc:     Linux Network Development Mailing List <netdev@...r.kernel.org>,
        Netfilter Development Mailing List 
        <netfilter-devel@...r.kernel.org>
Subject: [PATCH] libipt_ULOG.c - include strings.h for the definition of ffs()

From: Maciej Żenczykowski <maze@...gle.com>

This resolves compiler warnings:

extensions/libext4_srcs/gen/gensrcs/external/iptables/extensions/libipt_ULOG.c:89:32: error: implicit declaration of function 'ffs' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
  printf(" --ulog-nlgroup %d", ffs(loginfo->nl_group));
                               ^
extensions/libext4_srcs/gen/gensrcs/external/iptables/extensions/libipt_ULOG.c:105:9: error: implicit declaration of function 'ffs' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
  ffs(loginfo->nl_group));
  ^

Test: builds with less warnings
Signed-off-by: Maciej Żenczykowski <maze@...gle.com>
---
 extensions/libipt_ULOG.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/extensions/libipt_ULOG.c b/extensions/libipt_ULOG.c
index fafb220b..5163eea3 100644
--- a/extensions/libipt_ULOG.c
+++ b/extensions/libipt_ULOG.c
@@ -11,6 +11,7 @@
  */
 #include <stdio.h>
 #include <string.h>
+#include <strings.h>
 #include <xtables.h>
 /* For 64bit kernel / 32bit userspace */
 #include <linux/netfilter_ipv4/ipt_ULOG.h>
-- 
2.26.1.301.g55bc3eb7cb9-goog