initial commit with rc for skalibs-2.0.0.0

1 files changed, 41 insertions, 0 deletions

diff --git a/src/libstddjb/iobuffer_kfromu.c b/src/libstddjb/iobuffer_kfromu.c
new file mode 100644
index 0000000..28785e6
--- /dev/null
+++ b/src/libstddjb/iobuffer_kfromu.c
@@ -0,0 +1,41 @@
+/* ISC license. */
+
+#include <skalibs/sysdeps.h>
+
+#ifdef SKALIBS_HASSPLICE
+
+#include <skalibs/nonposix.h>
+#include <fcntl.h>
+#include <sys/uio.h>
+#include <skalibs/buffer.h>
+#include <skalibs/iobuffer.h>
+#include <skalibs/siovec.h>
+
+int iobuffer_kfromu (iobufferk_ref k, iobufferu_ref u)
+{
+  struct iovec iov[2] ;
+  siovec_t v[2] ;
+  int r ;
+  buffer_rpeek(&u->b[0], v) ;
+  iovec_from_siovec(iov, v, 2) ;
+  r = vmsplice(k->p[1], iov, 2, 0) ;
+  if (r < 0) return 0 ;
+  k->n += r ;
+  buffer_rseek(&u->b[0], (unsigned int)r) ;
+  u->b[1].c.p = u->b[0].c.p ;
+  return iobufferu_isempty(u) ;
+}
+
+#else
+
+#include <errno.h>
+#include <skalibs/iobuffer.h>
+
+int iobuffer_kfromu (iobufferk_ref k, iobufferu_ref u)
+{
+  (void)k ;
+  (void)u ;
+  return (errno = ENOSYS, 0) ;
+}
+
+#endif