telnetd: Remove keep stdio feature

The Telnet service started via rtems_telnetd_start() had a keep stdio
feature.  This just created a task and executed the command function in
a loop.  For this kind of service we do not library support.  This can
be done by an application task on its own.  Remove this feature and
provide only the real Telnet server functionality.

Use syslog() for error and status messages.

Add test program for the Telnet server.

Close #3542.

1 files changed, 118 insertions, 0 deletions

diff --git a/testsuites/libtests/telnetd01/init.c b/testsuites/libtests/telnetd01/init.c
new file mode 100644
index 0000000000..f2243d9dd8
--- /dev/null
+++ b/testsuites/libtests/telnetd01/init.c
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2018 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+
+#include <rtems.h>
+#include <rtems/rtems_bsdnet.h>
+#include <rtems/telnetd.h>
+
+#include <tmacros.h>
+
+const char rtems_test_name[] = "TELNETD 1";
+
+struct rtems_bsdnet_config rtems_bsdnet_config;
+
+static void command(char *device_name, void *arg)
+{
+}
+
+static void test_command_null(void)
+{
+  static const rtems_telnetd_config_table config = {
+    .command = NULL
+  };
+  rtems_status_code sc;
+
+  sc = rtems_telnetd_start(&config);
+  rtems_test_assert(sc == RTEMS_INVALID_ADDRESS);
+}
+
+static void test_cannot_start_server_task(void)
+{
+  static const rtems_telnetd_config_table config = {
+    .command = command,
+    .priority = UINT32_MAX
+  };
+  rtems_status_code sc;
+
+  sc = rtems_telnetd_start(&config);
+  rtems_test_assert(sc == RTEMS_UNSATISFIED);
+}
+
+static void test_successful_start(void)
+{
+  static const rtems_telnetd_config_table config = {
+    .command = command,
+    .stack_size = RTEMS_MINIMUM_STACK_SIZE
+  };
+  rtems_status_code sc;
+
+  sc = rtems_telnetd_start(&config);
+  rtems_test_assert(sc == RTEMS_SUCCESSFUL);
+}
+
+static void test_already_started(void)
+{
+  static const rtems_telnetd_config_table config = {
+    .command = command
+  };
+  rtems_status_code sc;
+
+  sc = rtems_telnetd_start(&config);
+  rtems_test_assert(sc == RTEMS_RESOURCE_IN_USE);
+}
+
+static rtems_task Init(rtems_task_argument argument)
+{
+  int rv;
+
+  TEST_BEGIN();
+
+  rv = rtems_bsdnet_initialize_network();
+  rtems_test_assert(rv == 0);
+
+  test_command_null();
+  test_cannot_start_server_task();
+  test_successful_start();
+  test_already_started();
+
+  TEST_END();
+  rtems_test_exit(0);
+}
+
+#define CONFIGURE_INIT
+
+#define CONFIGURE_MICROSECONDS_PER_TICK 10000
+
+#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
+#define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER
+
+#define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 32
+
+#define CONFIGURE_MAXIMUM_TASKS 7
+
+#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
+
+#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
+
+#define CONFIGURE_INIT_TASK_ATTRIBUTES RTEMS_FLOATING_POINT
+
+#include <rtems/confdefs.h>