1 files changed, 44 insertions, 0 deletions
diff --git a/src/libstddjb/iopause_ppoll.c b/src/libstddjb/iopause_ppoll.c
new file mode 100644
index 0000000..b181d0a
--- /dev/null
+++ b/src/libstddjb/iopause_ppoll.c
@@ -0,0 +1,44 @@
+/* ISC license. */
+
+#include <skalibs/sysdeps.h>
+
+#ifdef SKALIBS_HASPPOLL
+
+#define _GNU_SOURCE
+#include <errno.h>
+#include <time.h>
+#include <poll.h>
+#include <skalibs/tai.h>
+#include <skalibs/iopause.h>
+
+int iopause_ppoll (iopause_fd *x, unsigned int len, tain_t const *deadline, tain_t const *stamp)
+{
+  struct timespec ts = { .tv_sec = 0, .tv_nsec = 0 } ;
+  if (deadline && tain_less(stamp, deadline))
+  {
+    tain_t delta ;
+    tain_sub(&delta, deadline, stamp) ;
+    if (!timespec_from_tain_relative(&ts, &delta))
+    {
+      if (errno != ERANGE) return -1 ;
+      else deadline = 0 ;
+    }
+  }
+  return ppoll(x, len, deadline ? &ts : 0, 0) ;
+}
+
+#else
+
+#include <errno.h>
+#include <skalibs/iopause.h>
+
+int iopause_ppoll (iopause_fd *x, unsigned int len, tain_t const *deadline, tain_t const *stamp)
+{
+  (void)x ;
+  (void)len ;
+  (void)deadline ;
+  (void)stamp ;
+  return (errno = ENOSYS, -1) ;
+}
+
+#endif