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