iptables/SOURCES/0007-nft-Fix-command-name-in-ip6tables-error-message.patch

From a58c38e4c579f409669b5ab82d3b039528a129af Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Fri, 7 Aug 2020 13:48:28 +0200
Subject: [PATCH] nft: Fix command name in ip6tables error message

Upon errors, ip6tables-nft would prefix its error messages with
'iptables:' instead of 'ip6tables:'. Turns out the command name was
hard-coded, use 'progname' variable instead.
While being at it, merge the two mostly identical fprintf() calls into
one.

Signed-off-by: Phil Sutter <phil@nwl.cc>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
(cherry picked from commit 3be40dcfb5af1438b6abdbda45a1e3b59c104e13)
---
 iptables/xtables-standalone.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/iptables/xtables-standalone.c b/iptables/xtables-standalone.c
index dd6fb7919d2e1..7b71db62f1ea6 100644
--- a/iptables/xtables-standalone.c
+++ b/iptables/xtables-standalone.c
@@ -75,14 +75,10 @@ xtables_main(int family, const char *progname, int argc, char *argv[])
 	xtables_fini();
 
 	if (!ret) {
-		if (errno == EINVAL) {
-			fprintf(stderr, "iptables: %s. "
-					"Run `dmesg' for more information.\n",
-				nft_strerror(errno));
-		} else {
-			fprintf(stderr, "iptables: %s.\n",
-				nft_strerror(errno));
-		}
+		fprintf(stderr, "%s: %s.%s\n", progname, nft_strerror(errno),
+			(errno == EINVAL ?
+			 " Run `dmesg' for more information." : ""));
+
 		if (errno == EAGAIN)
 			exit(RESOURCE_PROBLEM);
 	}
-- 
2.40.0