Commit 7c8791edac3 ("xtables-monitor: fix build with older glibc")
changed the code to use GNU style tcphdr fields. Unfortunately, musl
libc requires _GNU_SOURCE definition to expose these fields.
Fix the following build failure:
xtables-monitor.c: In function ‘trace_print_packet’:
xtables-monitor.c:406:43: error: ‘const struct tcphdr’ has no member named ‘source’
printf("SPORT=%d DPORT=%d ", ntohs(tcph->source), ntohs(tcph->dest));
^~
xtables-monitor.c:406:64: error: ‘const struct tcphdr’ has no member named ‘dest’
printf("SPORT=%d DPORT=%d ", ntohs(tcph->source), ntohs(tcph->dest));
^~
...
Cc: Florian Westphal <fw@xxxxxxxxx>
Signed-off-by: Baruch Siach <baruch@xxxxxxxxxx>
---
iptables/xtables-monitor.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/iptables/xtables-monitor.c b/iptables/xtables-monitor.c
index 5d1611122df5..f835c5e503e0 100644
--- a/iptables/xtables-monitor.c
+++ b/iptables/xtables-monitor.c
@@ -9,6 +9,7 @@
* This software has been sponsored by Sophos Astaro <http://www.sophos.com>
*/
+#define _GNU_SOURCE
#include <stdlib.h>
#include <time.h>
#include <string.h>
--
2.19.1
