package/utils/busybox/patches/610-ntpd_delayed_resolve.patch

   1 --- a/networking/ntpd.c
   2 +++ b/networking/ntpd.c
   3 @@ -216,6 +216,7 @@ typedef struct {
   4  typedef struct {
   5         len_and_sockaddr *p_lsa;
   6         char             *p_dotted;
   7 +       char             *p_hostname;
   8         /* when to send new query (if p_fd == -1)
   9          * or when receive times out (if p_fd >= 0): */
  10         int              p_fd;
  11 @@ -646,8 +647,9 @@ add_peers(char *s)
  12         peer_t *p;
  13
  14         p = xzalloc(sizeof(*p));
  15 -       p->p_lsa = xhost2sockaddr(s, 123);
  16 -       p->p_dotted = xmalloc_sockaddr2dotted_noport(&p->p_lsa->u.sa);
  17 +       p->p_hostname = s;
  18 +       p->p_lsa = NULL;
  19 +       p->p_dotted = NULL;
  20         p->p_fd = -1;
  21         p->p_xmt_msg.m_status = MODE_CLIENT | (NTP_VERSION << 3);
  22         p->next_action_time = G.cur_time; /* = set_next(p, 0); */
  23 @@ -696,6 +698,25 @@ send_query_to_peer(peer_t *p)
  24          *
  25          * Uncomment this and use strace to see it in action:
  26          */
  27 +
  28 +       /* See if the peer hostname already resolved yet, if not, retry to resolv and return on failure */
  29 +       if (!p->p_lsa)
  30 +       {
  31 +               p->p_lsa = host2sockaddr(p->p_hostname, 123);
  32 +
  33 +               if (p->p_lsa)
  34 +               {
  35 +                       p->p_dotted = xmalloc_sockaddr2dotted_noport(&p->p_lsa->u.sa);
  36 +                       VERB1 bb_error_msg("resolved peer %s to %s", p->p_hostname, p->p_dotted);
  37 +               }
  38 +               else
  39 +               {
  40 +                       set_next(p, RETRY_INTERVAL);
  41 +                       VERB1 bb_error_msg("could not resolve peer %s, skipping", p->p_hostname);
  42 +                       return;
  43 +               }
  44 +       }
  45 +
  46  #define PROBE_LOCAL_ADDR /* { len_and_sockaddr lsa; lsa.len = LSA_SIZEOF_SA; getsockname(p->query.fd, &lsa.u.sa, &lsa.len); } */
  47
  48         if (p->p_fd == -1) {