1 files changed, 28 insertions, 8 deletions

diff --git a/runit/runsv.c b/runit/runsv.c
index baef6e13f..b35c26630 100644
--- a/runit/runsv.c
+++ b/runit/runsv.c
@@ -33,6 +33,34 @@ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "libbb.h"
 #include "runit_lib.h"
 
+#if ENABLE_MONOTONIC_SYSCALL
+#include <sys/syscall.h>
+
+/* libc has incredibly messy way of doing this,
+ * typically requiring -lrt. We just skip all this mess */
+static void gettimeofday_ns(struct timespec *ts)
+{
+        syscall(__NR_clock_gettime, CLOCK_REALTIME, ts);
+}
+#else
+static void gettimeofday_ns(struct timespec *ts)
+{
+        if (sizeof(struct timeval) == sizeof(struct timespec)
+         && sizeof(((struct timeval*)ts)->tv_usec) == sizeof(ts->tv_nsec)
+        ) {
+                /* Cheat */
+                gettimeofday((void*)ts, NULL);
+                ts->tv_nsec *= 1000;
+        } else {
+                extern void BUG_need_to_implement_gettimeofday_ns(void);
+                BUG_need_to_implement_gettimeofday_ns();
+        }
+}
+#endif
+
+/* Compare possibly overflowing unsigned counters */
+#define LESS(a,b) ((int)((unsigned)(b) - (unsigned)(a)) > 0)
+
 static int selfpipe[2];
 
 /* state */
@@ -126,14 +154,6 @@ static int rename_or_warn(const char *old, const char *new)
         return 0;
 }
 
-#define LESS(a,b) ((int)((unsigned)(b) - (unsigned)(a)) > 0)
-
-#include <sys/syscall.h>
-static void gettimeofday_ns(struct timespec *ts)
-{
-        syscall(__NR_clock_gettime, CLOCK_REALTIME, ts);
-}
-
 static void update_status(struct svdir *s)
 {
         ssize_t sz;