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diff -up dhcp-4.2.5/client/dhclient.c.dns_client_cancelupdate dhcp-4.2.5/client/dhclient.c
--- dhcp-4.2.5/client/dhclient.c.dns_client_cancelupdate 2015-06-25 14:31:27.309035906 +0200
+++ dhcp-4.2.5/client/dhclient.c 2015-06-25 14:34:26.477642016 +0200
@@ -121,6 +121,8 @@ static int check_option_values(struct un
const char *ptr, size_t len);
static void setup_ib_interface(struct interface_info *ip);
+static void dhclient_ddns_cb_free(dhcp_ddns_cb_t *ddns_cb,
+ char* file, int line);
int
main(int argc, char **argv) {
@@ -4306,7 +4308,7 @@ client_dns_remove_action(dhcp_ddns_cb_t
}
/* If we are done or have an error clean up */
- ddns_cb_free(ddns_cb, MDL);
+ dhclient_ddns_cb_free(ddns_cb, MDL);
return;
}
@@ -4335,7 +4337,7 @@ client_dns_remove(struct client_state *c
result = client_dns_update(client, ddns_cb);
if (result != ISC_R_TIMEDOUT) {
- ddns_cb_free(ddns_cb, MDL);
+ dhclient_ddns_cb_free(ddns_cb, MDL);
}
}
}
@@ -4418,10 +4420,7 @@ client_dns_update_timeout (void *cp)
* the control block and should free it.
*/
if (status != ISC_R_TIMEDOUT) {
- if (client != NULL) {
- client->ddns_cb = NULL;
- }
- ddns_cb_free(ddns_cb, MDL);
+ dhclient_ddns_cb_free(ddns_cb, MDL);
}
}
@@ -4510,7 +4509,7 @@ client_dns_update_action(dhcp_ddns_cb_t
return;
}
- ddns_cb_free(ddns_cb, MDL);
+ dhclient_ddns_cb_free(ddns_cb, MDL);
return;
}
@@ -4873,3 +4872,17 @@ add_reject(struct packet *packet) {
*/
log_info("Server added to list of rejected servers.");
}
+
+/* Wrapper function around common ddns_cb_free function that ensures
+ * we set the client_state pointer to the control block to NULL. */
+static void
+dhclient_ddns_cb_free(dhcp_ddns_cb_t *ddns_cb, char* file, int line) {
+ if (ddns_cb) {
+ struct client_state *client = (struct client_state *)ddns_cb->lease;
+ if (client != NULL) {
+ client->ddns_cb = NULL;
+ }
+
+ ddns_cb_free(ddns_cb, file, line);
+ }
+}