[PATCH] ypbind: replace gethostbyname() with getaddrinfo()

Replace legacy gethostbyname() usage in yp_restricted_mode()
with getaddrinfo(), preserving IPv4-only semantics.
This avoids use of struct hostent and modernizes the
name resolution API.

Signed-off-by: Ashwani Kumar Kamal <[email protected]>
---
 usr.sbin/ypbind/ypbind.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/usr.sbin/ypbind/ypbind.c b/usr.sbin/ypbind/ypbind.c
index 6ed45eeb8dc6..8a6da584f5d1 100644
--- a/usr.sbin/ypbind/ypbind.c
+++ b/usr.sbin/ypbind/ypbind.c
@@ -993,7 +993,7 @@ verify(struct in_addr addr)
 void
 yp_restricted_mode(char *args)
 {
-	struct hostent *h;
+	struct addrinfo hints, *res;
 	int i = 0;
 	char *s;
 
@@ -1004,10 +1004,13 @@ yp_restricted_mode(char *args)
 
 	/* Get the addresses of the servers. */
 	while ((s = strsep(&args, ",")) != NULL && i < RESTRICTED_SERVERS) {
-		if ((h = gethostbyname(s)) == NULL)
+		memset(&hints, 0, sizeof(hints));
+		hints.ai_family = AF_INET;
+		if (getaddrinfo(s, NULL, &hints, &res) != 0)
 			return;
-		bcopy (h->h_addr_list[0], &restricted_addrs[i],
+		bcopy (&((struct sockaddr_in *)res->ai_addr)->sin_addr, &restricted_addrs[i],
 		    sizeof(struct in_addr));
+		freeaddrinfo(res);
 		i++;
 	}
 
-- 
2.53.0