1 files changed, 89 insertions, 0 deletions
diff --git a/cpukit/libcsupport/src/libio_init.c b/cpukit/libcsupport/src/libio_init.c
new file mode 100644
index 0000000000..a6b99870a5
--- /dev/null
+++ b/cpukit/libcsupport/src/libio_init.c
@@ -0,0 +1,89 @@
+/*
+ *  This file contains the support infrastructure used to manage the
+ *  table of integer style file descriptors used by the low level
+ *  POSIX system calls like open(), read, fstat(), etc.
+ *
+ *  COPYRIGHT (c) 1989-2010.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  $Id$
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <rtems/libio_.h>               /* libio_.h pulls in rtems */
+#include <rtems.h>
+#include <rtems/assoc.h>                /* assoc.h not included by rtems.h */
+
+#include <stdio.h>                      /* O_RDONLY, et.al. */
+#include <fcntl.h>                      /* O_RDONLY, et.al. */
+#include <errno.h>
+
+#include <errno.h>
+#include <string.h>                     /* strcmp */
+#include <unistd.h>
+#include <stdlib.h>                     /* calloc() */
+
+#include <rtems/libio.h>                /* libio.h not pulled in by rtems */
+
+/*
+ *  File descriptor Table Information
+ */
+
+rtems_id           rtems_libio_semaphore;
+rtems_libio_t     *rtems_libio_iops;
+rtems_libio_t     *rtems_libio_iop_freelist;
+
+/*
+ *  rtems_libio_init
+ *
+ *  Called by BSP startup code to initialize the libio subsystem.
+ */
+
+void rtems_libio_init( void )
+{
+    rtems_status_code rc;
+    uint32_t i;
+    rtems_libio_t *iop;
+
+    if (rtems_libio_number_iops > 0)
+    {
+        rtems_libio_iops = (rtems_libio_t *) calloc(rtems_libio_number_iops,
+                                                    sizeof(rtems_libio_t));
+        if (rtems_libio_iops == NULL)
+            rtems_fatal_error_occurred(RTEMS_NO_MEMORY);
+
+        iop = rtems_libio_iop_freelist = rtems_libio_iops;
+        for (i = 0 ; (i + 1) < rtems_libio_number_iops ; i++, iop++)
+          iop->data1 = iop + 1;
+        iop->data1 = NULL;
+    }
+
+  /*
+   *  Create the binary semaphore used to provide mutual exclusion
+   *  on the IOP Table.
+   */
+
+  rc = rtems_semaphore_create(
+    RTEMS_LIBIO_SEM,
+    1,
+    RTEMS_BINARY_SEMAPHORE | RTEMS_INHERIT_PRIORITY | RTEMS_PRIORITY,
+    RTEMS_NO_PRIORITY,
+    &rtems_libio_semaphore
+  );
+  if ( rc != RTEMS_SUCCESSFUL )
+    rtems_fatal_error_occurred( rc );
+
+  /*
+   *  Initialize the base file system infrastructure.
+   */
+
+  if (rtems_fs_init_helper)
+     (* rtems_fs_init_helper)();
+}