1 files changed, 31 insertions, 0 deletions
diff --git a/src/skaembutils/s6-clock.c b/src/skaembutils/s6-clock.c
new file mode 100644
index 0000000..822500a
--- /dev/null
+++ b/src/skaembutils/s6-clock.c
@@ -0,0 +1,31 @@
+/* ISC license. */
+
+#include <skalibs/allreadwrite.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/tai.h>
+
+#define USAGE "s6-clock [ tai64nlabel ]"
+
+static int getit (void)
+{
+  char fmt[TIMESTAMP+1] ;
+  timestamp(fmt) ;
+  fmt[TIMESTAMP] = '\n' ;
+  if (allwrite(1, fmt, TIMESTAMP+1) < TIMESTAMP+1)
+    strerr_diefu1sys(111, "write to stdout") ;
+  return 0 ;
+}
+
+static int setit (char const *h)
+{
+  tain_t a ;
+  if (!timestamp_scan(h, &a)) strerr_dieusage(100, USAGE) ;
+  if (!tain_setnow(&a)) strerr_diefu1sys(111, "taia_setnow") ;
+  return 0 ;
+}
+
+int main (int argc, char const *const *argv)
+{
+  PROG = "s6-clock" ;
+  return (argc < 2) ? getit() : setit(argv[1]) ;
+}