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busybox: ntpd: indefinitely try to resolve peer addresses (#10361) 

SVN-Revision: 28794
owl
Jo-Philipp Wich 2011-11-07 01:45:04 +00:00
parent 8189bd9260
commit ef98919ff0
2 changed files with 49 additions and 1 deletions
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2
package/busybox/Makefile
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@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=busybox
PKG_VERSION:=1.19.3
PKG_RELEASE:=1
PKG_RELEASE:=2
PKG_FLAGS:=essential
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2

48
package/busybox/patches/610-ntpd_delayed_resolve.patch Normal file
View File

@ -0,0 +1,48 @@
--- a/networking/ntpd.c
+++ b/networking/ntpd.c
@@ -216,6 +216,7 @@ typedef struct {
typedef struct {
len_and_sockaddr *p_lsa;
char *p_dotted;
+ char *p_hostname;
/* when to send new query (if p_fd == -1)
* or when receive times out (if p_fd >= 0): */
int p_fd;
@@ -646,8 +647,9 @@ add_peers(char *s)
peer_t *p;
p = xzalloc(sizeof(*p));
- p->p_lsa = xhost2sockaddr(s, 123);
- p->p_dotted = xmalloc_sockaddr2dotted_noport(&p->p_lsa->u.sa);
+ p->p_hostname = s;
+ p->p_lsa = NULL;
+ p->p_dotted = NULL;
p->p_fd = -1;
p->p_xmt_msg.m_status = MODE_CLIENT | (NTP_VERSION << 3);
p->next_action_time = G.cur_time; /* = set_next(p, 0); */
@@ -696,6 +698,25 @@ send_query_to_peer(peer_t *p)
*
* Uncomment this and use strace to see it in action:
*/
+
+ /* See if the peer hostname already resolved yet, if not, retry to resolv and return on failure */
+ if (!p->p_lsa)
+ {
+ p->p_lsa = host2sockaddr(p->p_hostname, 123);
+
+ if (p->p_lsa)
+ {
+ p->p_dotted = xmalloc_sockaddr2dotted_noport(&p->p_lsa->u.sa);
+ VERB1 bb_error_msg("resolved peer %s to %s", p->p_hostname, p->p_dotted);
+ }
+ else
+ {
+ set_next(p, RETRY_INTERVAL);
+ VERB1 bb_error_msg("could not resolve peer %s, skipping", p->p_hostname);
+ return;
+ }
+ }
+
#define PROBE_LOCAL_ADDR /* { len_and_sockaddr lsa; lsa.len = LSA_SIZEOF_SA; getsockname(p->query.fd, &lsa.u.sa, &lsa.len); } */
if (p->p_fd == -1) {