1 files changed, 9 insertions, 0 deletions

diff --git a/libbb/time.c b/libbb/time.c
index 30b760f71..1cf2a050e 100644
--- a/libbb/time.c
+++ b/libbb/time.c
@@ -71,6 +71,15 @@ void FAST_FUNC parse_datestr(const char *date_str, struct tm *tm_time)
         }
 }
 
+time_t FAST_FUNC validate_tm_time(const char *date_str, struct tm *tm_time)
+{
+        time_t t = mktime(tm_time);
+        if (t == (time_t) -1L) {
+                bb_error_msg_and_die(bb_msg_invalid_date, date_str);
+        }
+        return t;
+}
+
 #if ENABLE_MONOTONIC_SYSCALL
 
 #include <sys/syscall.h>