From bea0037dbdd979603fb0b5be8b43f5478c1f6fec Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Fri, 19 Sep 2014 02:53:32 +0000
Subject: initial commit

---
 src/skaembutils/s6-sleep.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 src/skaembutils/s6-sleep.c

(limited to 'src/skaembutils/s6-sleep.c')

diff --git a/src/skaembutils/s6-sleep.c b/src/skaembutils/s6-sleep.c
new file mode 100644
index 0000000..ea25514
--- /dev/null
+++ b/src/skaembutils/s6-sleep.c
@@ -0,0 +1,46 @@
+/* ISC license. */
+
+#include <unistd.h>
+#include <skalibs/sgetopt.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/uint.h>
+#include <skalibs/tai.h>
+#include <skalibs/djbunix.h>
+#include <skalibs/iopause.h>
+
+#define USAGE "s6-sleep [ -m ] duration prog..."
+
+int main (int argc, char const *const *argv, char const *const *envp)
+{
+  unsigned int n ;
+  int milli = 0 ;
+  PROG = "s6-sleep" ;
+  {
+    subgetopt_t l = SUBGETOPT_ZERO ;
+    for (;;)
+    {
+      register int opt = subgetopt_r(argc, argv, "m", &l) ;
+      if (opt == -1) break ;
+      switch (opt)
+      {
+        case 'm': milli = 1 ; break ;
+        default : strerr_dieusage(100, USAGE) ;
+      }
+    }
+    argc -= l.ind ; argv += l.ind ;
+  }
+  if (!argc) strerr_dieusage(100, USAGE) ;
+  if (!uint0_scan(argv[0], &n)) strerr_dieusage(100, USAGE) ;
+
+  {
+    tain_t deadline ;
+    if (milli) tain_from_millisecs(&deadline, n) ;
+    else tain_uint(&deadline, n) ;
+    tain_now_g() ;
+    tain_add_g(&deadline, &deadline) ;
+    deepsleepuntil_g(&deadline) ;
+  }
+
+  pathexec0_run(argv+1, envp) ;
+  strerr_dieexec(111, argv[1]) ;
+}
-- 
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