Added libio_sockets.c to hold support routines for networking code.

1 files changed, 58 insertions, 0 deletions

diff --git a/c/src/exec/libcsupport/src/libio_sockets.c b/c/src/exec/libcsupport/src/libio_sockets.c
new file mode 100644
index 0000000000..d0a9fbef13
--- /dev/null
+++ b/c/src/exec/libcsupport/src/libio_sockets.c
@@ -0,0 +1,58 @@
+/*
+ *  This file contains the support infrastructure used to manage the
+ *  table of integer style file descriptors used by the socket calls.
+ *
+ *  COPYRIGHT (c) 1989-1998.
+ *  On-Line Applications Research Corporation (OAR).
+ *  Copyright assigned to U.S. Government, 1994.
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+#include "libio_.h"                   /* libio_.h pulls in rtems */
+#include <rtems.h>
+
+#include <errno.h>
+
+
+/*
+ * Convert an RTEMS file descriptor to a BSD socket pointer.
+ */
+
+struct socket *rtems_bsdnet_fdToSocket(
+  int fd
+)
+{
+  rtems_libio_t *iop;
+
+  if ((unsigned32)fd >= rtems_libio_number_iops)
+      return NULL;
+  iop = &rtems_libio_iops[fd];
+  if ((iop->flags & LIBIO_FLAGS_HANDLER_MASK) != LIBIO_FLAGS_HANDLER_SOCK)
+      return NULL;
+  return iop->data1;
+}
+
+/*
+ * Create an RTEMS file descriptor for a socket
+ */
+
+int rtems_bsdnet_makeFdForSocket(
+  void *so
+)
+{
+  rtems_libio_t *iop;
+
+  iop = rtems_libio_allocate();
+  if (iop == 0) {
+      errno = ENFILE;
+      return -1;
+ }
+  iop->flags |= LIBIO_FLAGS_HANDLER_SOCK;
+  iop->data1 = so;
+  return iop - rtems_libio_iops;
+}