[Feature][ZXW-33]merge ZXW 0428 version

Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/hurd/ports-get.c b/ap/libc/glibc/glibc-2.23/hurd/ports-get.c
new file mode 100644
index 0000000..fb34fe6
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/hurd/ports-get.c
@@ -0,0 +1,45 @@
+/* Copyright (C) 1994-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <hurd.h>
+
+static error_t
+getbootstrap (mach_port_t *result)
+{
+  return __task_get_special_port (__mach_task_self (),
+				  TASK_BOOTSTRAP_PORT,
+				  result);
+}
+
+error_t (*_hurd_ports_getters[INIT_PORT_MAX]) (mach_port_t *result) =
+  {
+    [INIT_PORT_BOOTSTRAP] = getbootstrap,
+  };
+
+error_t
+_hurd_ports_get (unsigned int which, mach_port_t *result)
+{
+  if (which >= _hurd_nports)
+    return EINVAL;
+  if (which >= INIT_PORT_MAX || _hurd_ports_getters[which] == NULL)
+    return HURD_PORT_USE (&_hurd_ports[which],
+			  (*result = port) == MACH_PORT_NULL ? 0
+			  : __mach_port_mod_refs (__mach_task_self (),
+						  port, MACH_PORT_RIGHT_SEND,
+						  +1));
+  return (*_hurd_ports_getters[which]) (result);
+}