bsd: Add getaddrinfom, gai_strerror, ipv6_addr, if_nametoindex and BSD programs

- These additions let the net services repo build with the legacy
  stack

1 files changed, 86 insertions, 0 deletions

diff --git a/rtems/rtems-kernel-program.c b/rtems/rtems-kernel-program.c
new file mode 100644
index 0000000..6dd8028
--- /dev/null
+++ b/rtems/rtems-kernel-program.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2022 On-Line Applications Research Corporation (OAR)
+ * Written by Kinsey Moore <kinsey.moore@oarcorp.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <machine/rtems-bsd-kernel-space.h>
+#include <machine/rtems-bsd-thread.h>
+
+#include <sys/types.h>
+#include <sys/kernel.h>
+
+#include <stdio.h>
+
+#include <rtems/extension.h>
+#include <rtems/score/percpu.h>
+#include <rtems/score/thread.h>
+#include <rtems/sysinit.h>
+
+static size_t rtems_bsd_extension_index;
+
+static const rtems_extensions_table rtems_bsd_extensions = {};
+
+/*
+ * This must only be run after the system has become multithreading such as in
+ * Init(). This must not be run as part of normal RTEMS initialization as part
+ * of a SYSINIT call.
+ */
+void rtems_bsd_compat_initialize(void)
+{
+  rtems_id ext_id;
+  rtems_status_code sc;
+
+  sc = rtems_extension_create(
+    BSD_TASK_NAME,
+    &rtems_bsd_extensions,
+    &ext_id
+  );
+  if (sc != RTEMS_SUCCESSFUL) {
+    printf("%s: cannot create extension\n",  __func__);
+    rtems_task_suspend(RTEMS_SELF);
+    rtems_fatal_error_occurred(0xdeadbeef);
+  }
+
+  rtems_bsd_extension_index = rtems_object_id_get_index(ext_id);
+}
+
+static struct rtems_bsd_program_control **
+rtems_bsd_get_bsd_extension_ptr(void)
+{
+  Thread_Control *executing = _Thread_Get_executing();
+  return ( struct rtems_bsd_program_control ** )&executing->extensions[rtems_bsd_extension_index];
+}
+
+struct rtems_bsd_program_control *
+rtems_bsd_program_get_control_or_null(void)
+{
+  return *rtems_bsd_get_bsd_extension_ptr();
+}
+
+int
+rtems_bsd_program_set_control(struct rtems_bsd_program_control *prog_ctrl)
+{
+  *rtems_bsd_get_bsd_extension_ptr() = prog_ctrl;
+  return 0;
+}