1 files changed, 49 insertions, 0 deletions
diff --git a/src/libstddjb/iobufferk_fill.c b/src/libstddjb/iobufferk_fill.c
new file mode 100644
index 0000000..50ac403
--- /dev/null
+++ b/src/libstddjb/iobufferk_fill.c
@@ -0,0 +1,49 @@
+/* ISC license. */
+
+#include <skalibs/sysdeps.h>
+
+#ifdef SKALIBS_HASSPLICE
+
+#include <skalibs/nonposix.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <skalibs/iobuffer.h>
+
+static int iobufferk_tee (iobufferk_ref k)
+{
+  register int r = tee(k->fd[0], k->fd[1], IOBUFFERK_SIZE - k->n, k->nb & 1 ? SPLICE_F_NONBLOCK : 0) ;
+  if (r > 0) k->n += r ;
+  return r ;
+}
+
+static int iobufferk_splice (iobufferk_ref k)
+{
+  register int r = splice(k->fd[0], 0, k->fd[1], 0, IOBUFFERK_SIZE, k->nb ? SPLICE_F_NONBLOCK : 0) ;
+  if (r > 0) k->n += r ;
+  if ((r < 0) && (errno == EINVAL)) errno = ENOSYS ;
+  return r ;
+}
+
+static int iobufferk_fill_3 (iobufferk_ref k)
+{
+  register int r = splice(k->fd[0], 0, k->p[1], 0, IOBUFFERK_SIZE - k->n, k->nb & 1 ? SPLICE_F_NONBLOCK : 0) ;
+  if (r > 0) k->n += r ;
+  if ((r < 0) && (errno == EINVAL)) errno = ENOSYS ;
+  return r ;
+}
+
+iobufferk_io_func_t_ref const iobufferk_fill_f[4] =
+{
+  &iobufferk_tee, &iobufferk_splice, &iobufferk_splice, &iobufferk_fill_3
+} ;
+
+#else
+
+#include <skalibs/iobuffer.h>
+
+iobufferk_io_func_t_ref const iobufferk_fill_f[4] =
+{
+  &iobufferk_nosys, &iobufferk_nosys, &iobufferk_nosys, &iobufferk_nosys
+} ;
+
+#endif