libbb: introduce and use xgettimeofday(), do not truncate 64-bit time_t in shells

function                                             old     new   delta
xgettimeofday                                          -      11     +11
get_local_var_value                                  280     281      +1
svlogd_main                                         1323    1322      -1
change_epoch                                          67      66      -1
timestamp_and_log                                    461     458      -3
hwclock_main                                         301     298      -3
fmt_time_bernstein_25                                135     132      -3
step_time                                            331     326      -5
script_main                                         1207    1202      -5
machtime                                              34      28      -6
curtime                                               61      54      -7
ts_main                                              423     415      -8
nmeter_main                                          761     751     -10
gettime1900d                                          67      46     -21
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/12 up/down: 12/-73)           Total: -61 bytes

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

1 files changed, 4 insertions, 4 deletions

diff --git a/util-linux/hwclock.c b/util-linux/hwclock.c
index 25db7cdad..723b09589 100644
--- a/util-linux/hwclock.c
+++ b/util-linux/hwclock.c
@@ -79,7 +79,7 @@ static time_t read_rtc(const char **pp_rtcname, struct timeval *sys_tv, int utc)
                 int before = tm_time.tm_sec;
                 while (1) {
                         rtc_read_tm(&tm_time, fd);
-                        gettimeofday(sys_tv, NULL);
+                        xgettimeofday(sys_tv);
                         if (before != (int)tm_time.tm_sec)
                                 break;
                 }
@@ -205,7 +205,7 @@ static void from_sys_clock(const char **pp_rtcname, int utc)
         int rtc;
 
         rtc = rtc_xopen(pp_rtcname, O_WRONLY);
-        gettimeofday(&tv, NULL);
+        xgettimeofday(&tv);
         /* Prepare tm_time */
         if (sizeof(time_t) == sizeof(tv.tv_sec)) {
                 if (utc)
@@ -253,7 +253,7 @@ static void from_sys_clock(const char **pp_rtcname, int utc)
                 unsigned rem_usec;
                 time_t t;
 
-                gettimeofday(&tv, NULL);
+                xgettimeofday(&tv);
 
                 t = tv.tv_sec;
                 rem_usec = 1000000 - tv.tv_usec;
@@ -274,7 +274,7 @@ static void from_sys_clock(const char **pp_rtcname, int utc)
                 }
 
                 /* gmtime/localtime took some time, re-get cur time */
-                gettimeofday(&tv, NULL);
+                xgettimeofday(&tv);
 
                 if (tv.tv_sec < t /* we are still in old second */
                  || (tv.tv_sec == t && tv.tv_usec < adj) /* not too far into next second */