Remove stime() function calls

stime() has been deprecated in glibc 2.31 and replaced with
clock_settime(). Let's replace the stime() function calls with
clock_settime() in preperation.

function                                             old     new   delta
rdate_main                                           197     224     +27
clock_settime                                          -      27     +27
date_main                                            926     941     +15
stime                                                 37       -     -37
------------------------------------------------------------------------------
(add/remove: 2/2 grow/shrink: 2/0 up/down: 69/-37)             Total: 32 bytes

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

coreutils/date.c

@@ -276,6 +276,9 @@ int date_main(int argc UNUSED_PARAM, char **argv)
 		time(&ts.tv_sec);
 #endif
 	}
+#if !ENABLE_FEATURE_DATE_NANO
+	ts.tv_nsec = 0;
+#endif
 	localtime_r(&ts.tv_sec, &tm_time);
 
 	/* If date string is given, update tm_time, and maybe set date */
@@ -298,9 +301,10 @@ int date_main(int argc UNUSED_PARAM, char **argv)
 		if (date_str[0] != '@')
 			tm_time.tm_isdst = -1;
 		ts.tv_sec = validate_tm_time(date_str, &tm_time);
+		ts.tv_nsec = 0;
 
 		/* if setting time, set it */
-		if ((opt & OPT_SET) && stime(&ts.tv_sec) < 0) {
+		if ((opt & OPT_SET) && clock_settime(CLOCK_REALTIME, &ts) < 0) {
 			bb_simple_perror_msg("can't set date");
 		}
 	}

libbb/missing_syscalls.c

@@ -15,14 +15,6 @@ pid_t getsid(pid_t pid)
 	return syscall(__NR_getsid, pid);
 }
 
-int stime(const time_t *t)
-{
-	struct timeval tv;
-	tv.tv_sec = *t;
-	tv.tv_usec = 0;
-	return settimeofday(&tv, NULL);
-}
-
 int sethostname(const char *name, size_t len)
 {
 	return syscall(__NR_sethostname, name, len);

util-linux/rdate.c

@@ -95,9 +95,13 @@ int rdate_main(int argc UNUSED_PARAM, char **argv)
 	if (!(flags & 2)) { /* no -p (-s may be present) */
 		if (time(NULL) == remote_time)
 			bb_simple_error_msg("current time matches remote time");
-		else
-			if (stime(&remote_time) < 0)
+		else {
+			struct timespec ts;
+			ts.tv_sec = remote_time;
+			ts.tv_nsec = 0;
+			if (clock_settime(CLOCK_REALTIME, &ts) < 0)
 				bb_simple_perror_msg_and_die("can't set time of day");
+		}
 	}
 
 	if (flags != 1) /* not lone -s */