Reset timeval to default value when tv_sec parameter become invalid.

Change-Id: I43fe8f9c252734aecb73a85776030d09ac51684b

diff --git a/toys/pending/dhcpd.c b/toys/pending/dhcpd.c
index 213a941..9f1f9ad 100644 (file)
--- a/toys/pending/dhcpd.c
+++ b/toys/pending/dhcpd.c
@@ -1707,6 +1707,13 @@ void dhcpd_main(void)
 
     int maxfd = (sigfd.rd > gstate.listensock)? sigfd.rd : gstate.listensock;
     dbg("select waiting ....\n");
+    if (tv.tv_sec < 0) {
+      dbg("timestmp: %u waited: %u tv_sec: %u, reset tv_sec to default value\n", timestmp, waited, tv.tv_sec);
+      waited = 0;
+      tv.tv_sec = gconfig.auto_time - waited;
+      tv.tv_usec = 0;
+    }
+
     retval = select(maxfd + 1, &rfds, NULL, NULL, (gconfig.auto_time?&tv:NULL));
     if (retval < 0) {
       if (errno == EINTR) {
@@ -2035,6 +2042,7 @@ void dhcpd_main(void)
               msgtype = DHCPNAK;
               optptr = set_optval(optptr, DHCP_OPT_MESSAGE_TYPE, &msgtype, 1);
               send_packet(1);
+              dbg("Send Message Type : DHCPNAK\n");
               break;
             }
             get_optval((uint8_t*) &gstate.rcvd.rcvd_pkt.options,
@@ -2045,6 +2053,7 @@ void dhcpd_main(void)
             optptr = set_optval(optptr, DHCP_OPT_LEASE_TIME, &reqested_lease, 4);
             optptr = set_reqparam(optptr, gstate.rqopt);
             send_packet(1);
+            dbg("Send Message Type : DHCPOFFER\n");
             break;
           case DHCPREQUEST:
             msgtype = DHCPACK;
@@ -2063,6 +2072,7 @@ void dhcpd_main(void)
               msgtype = DHCPNAK;
               optptr = set_optval(optptr, DHCP_OPT_MESSAGE_TYPE, &msgtype, 1);
               send_packet(1);
+              dbg("Send Message Type : DHCPNAK\n");
               break;
             }
             get_reqparam(&gstate.rqopt);
@@ -2072,6 +2082,7 @@ void dhcpd_main(void)
             optptr = set_optval(optptr, DHCP_OPT_LEASE_TIME, &reqested_lease, 4);
             optptr = set_reqparam(optptr, gstate.rqopt);
             send_packet(1);
+            dbg("Send Message Type : DHCPACK\n");
             write_leasefile();
             break;
           case DHCPDECLINE:// FALL THROUGH