xshared: Merge and share parse_chain()

Have a common routine to perform chain name checks, combining all
variants' requirements.

Signed-off-by: Phil Sutter <phil@nwl.cc>

1 files changed, 1 insertions, 0 deletions

diff --git a/iptables/xshared.h b/iptables/xshared.h
index b59116ac..6d6acbca 100644
--- a/iptables/xshared.h
+++ b/iptables/xshared.h
@@ -235,6 +235,7 @@ char cmd2char(int option);
 void add_command(unsigned int *cmd, const int newcmd,
 		 const int othercmds, int invert);
 int parse_rulenumber(const char *rule);
+void parse_chain(const char *chainname);
 
 void generic_opt_check(int command, int options);
 char opt2char(int option);