From: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Date: Tue, 5 Jun 2018 13:08:30 +0000 (+0200)
Subject: ip: display netns name instead of nsid
X-Git-Tag: v4.17.0~4
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9580bad7b993eb80479a5ee08d333c39995cd662;p=thirdparty%2Fiproute2.git

ip: display netns name instead of nsid

When iproute2 has a name for the nsid, let's display it. It's more
user friendly than a number.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---

diff --git a/ip/ip_common.h b/ip/ip_common.h
index 49eb7d7be..794478c54 100644
--- a/ip/ip_common.h
+++ b/ip/ip_common.h
@@ -60,6 +60,7 @@ void netns_map_init(void);
 void netns_nsid_socket_init(void);
 int print_nsid(const struct sockaddr_nl *who,
 	       struct nlmsghdr *n, void *arg);
+char *get_name_from_nsid(int nsid);
 int do_ipaddr(int argc, char **argv);
 int do_ipaddrlabel(int argc, char **argv);
 int do_iproute(int argc, char **argv);
diff --git a/ip/ipaddress.c b/ip/ipaddress.c
index c7c7e7df4..e4a1b985e 100644
--- a/ip/ipaddress.c
+++ b/ip/ipaddress.c
@@ -955,10 +955,16 @@ int print_linkinfo(const struct sockaddr_nl *who,
 		if (is_json_context()) {
 			print_int(PRINT_JSON, "link_netnsid", NULL, id);
 		} else {
-			if (id >= 0)
-				print_int(PRINT_FP, NULL,
-					  " link-netnsid %d", id);
-			else
+			if (id >= 0) {
+				char *name = get_name_from_nsid(id);
+
+				if (name)
+					print_string(PRINT_FP, NULL,
+						     " link-netns %s", name);
+				else
+					print_int(PRINT_FP, NULL,
+						  " link-netnsid %d", id);
+			} else
 				print_string(PRINT_FP, NULL,
 					     " link-netnsid %s", "unknown");
 		}
@@ -966,8 +972,12 @@ int print_linkinfo(const struct sockaddr_nl *who,
 
 	if (tb[IFLA_NEW_NETNSID]) {
 		int id = rta_getattr_u32(tb[IFLA_NEW_NETNSID]);
+		char *name = get_name_from_nsid(id);
 
-		print_int(PRINT_FP, NULL, " new-nsid %d", id);
+		if (name)
+			print_string(PRINT_FP, NULL, " new-netns %s", name);
+		else
+			print_int(PRINT_FP, NULL, " new-netnsid %d", id);
 	}
 	if (tb[IFLA_NEW_IFINDEX]) {
 		int id = rta_getattr_u32(tb[IFLA_NEW_IFINDEX]);
diff --git a/ip/ipnetns.c b/ip/ipnetns.c
index e06100f4a..30af9319f 100644
--- a/ip/ipnetns.c
+++ b/ip/ipnetns.c
@@ -169,6 +169,20 @@ static struct nsid_cache *netns_map_get_by_nsid(int nsid)
 	return NULL;
 }
 
+char *get_name_from_nsid(int nsid)
+{
+	struct nsid_cache *c;
+
+	netns_nsid_socket_init();
+	netns_map_init();
+
+	c = netns_map_get_by_nsid(nsid);
+	if (c)
+		return c->name;
+
+	return NULL;
+}
+
 static int netns_map_add(int nsid, const char *name)
 {
 	struct nsid_cache *c;