1 files changed, 48 insertions, 0 deletions
diff --git a/src/libstddjb/iobufferk_isworking.c b/src/libstddjb/iobufferk_isworking.c
new file mode 100644
index 0000000..f02b7e0
--- /dev/null
+++ b/src/libstddjb/iobufferk_isworking.c
@@ -0,0 +1,48 @@
+/* ISC license. */
+
+#include <skalibs/sysdeps.h>
+
+#ifdef SKALIBS_HASSPLICE
+
+#include <skalibs/nonposix.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <skalibs/iobuffer.h>
+
+int iobufferk_isworking (iobufferk_ref k)
+{
+ /* for now splice() with a length of 0 returns 0 no matter what, so this */
+ /* test is useless. splice() should test the underlying filesystems even */
+ /* if the length is 0. */
+
+# if 0
+
+  register int e = errno ;
+  if (splice(k->fd[0], 0, k->p[1], 0, 0, 0) < 0) goto no ;
+  if (splice(k->p[0], 0, k->fd[1], 0, 0, 0) < 0) goto no ;
+  errno = e ;
+  return 1 ;
+ no:
+  errno = e ;
+  return 0 ;
+
+# else
+
+  (void)k ;
+  return 1 ;
+
+# endif
+}
+
+#else
+
+#include <skalibs/iobuffer.h>
+
+int iobufferk_isworking (iobufferk_ref k)
+{
+  (void)k ;
+  return 0 ;
+}
+
+#endif
+