rule: add flag to display rule handle as comment

Knowing the rule handle is necessary to be able to delete a single
rule. It was not displayed till now in the output and it was thus
impossible to remove a single rule.
This patch modify the listing output to add a comment containing
the handle when the -a/--handle flag is provided.

Signed-off-by: Eric Leblond <eric@regit.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/rule.c b/src/rule.c
index 9d9eaee3..e77323d8 100644
--- a/src/rule.c
+++ b/src/rule.c
@@ -13,6 +13,7 @@
 #include <stdio.h>
 #include <stdint.h>
 #include <string.h>
+#include <inttypes.h>
 
 #include <statement.h>
 #include <rule.h>
@@ -136,6 +137,8 @@ void rule_print(const struct rule *rule)
 		printf(" ");
 		stmt->ops->print(stmt);
 	}
+	if (handle_output > 0)
+		printf(" # handle %" PRIu64, rule->handle.handle);
 	printf("\n");
 }