hwclock: disable time diff code; ntpd -S script: do not wait for completion

function                                             old     new   delta
rtcname                                                4       -      -4
run_script                                           278     273      -5
hwclock_main                                         466     439     -27
read_rtc                                              86      38     -48
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/3 up/down: 0/-84)             Total: -84 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/networking/ntpd.c b/networking/ntpd.c
index d23b2c984..038f2bded 100644
--- a/networking/ntpd.c
+++ b/networking/ntpd.c
@@ -709,7 +709,10 @@ static void run_script(const char *action)
          * last_update_offset, last_update_recv_time, discipline_jitter
          */
 
-        wait4pid(spawn(argv));
+        /* Don't want to wait: it may run hwclock --systohc, and that
+         * may take some time (seconds): */
+        /*wait4pid(spawn(argv));*/
+        spawn(argv);
         G.last_script_run = G.cur_time;
 
         unsetenv("stratum");
@@ -1805,7 +1808,8 @@ static NOINLINE void ntp_init(char **argv)
                 setpriority(PRIO_PROCESS, 0, -15);
 
         bb_signals((1 << SIGTERM) | (1 << SIGINT), record_signo);
-        bb_signals((1 << SIGPIPE) | (1 << SIGHUP), SIG_IGN);
+        /* Removed SIGHUP here: */
+        bb_signals((1 << SIGPIPE) | (1 << SIGCHLD), SIG_IGN);
 }
 
 int ntpd_main(int argc UNUSED_PARAM, char **argv) MAIN_EXTERNALLY_VISIBLE;