[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/hurd/getdport.c b/ap/libc/glibc/glibc-2.23/hurd/getdport.c
new file mode 100644
index 0000000..53e5a66
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/hurd/getdport.c
@@ -0,0 +1,58 @@
+/* Copyright (C) 1991-2016 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>
+
+/* This is initialized in dtable.c when that gets linked in.
+ If dtable.c is not linked in, it will be zero. */
+static file_t (*_default_hurd_getdport_fn) (int fd) = 0;
+weak_alias (_default_hurd_getdport_fn, _hurd_getdport_fn)
+
+file_t
+__getdport (int fd)
+{
+ if (_hurd_getdport_fn)
+ /* dtable.c has defined the function to fetch a port from the real file
+ descriptor table. */
+ return (*_hurd_getdport_fn) (fd);
+
+ /* getdport is the only use of file descriptors,
+ so we don't bother allocating a real table. */
+
+ if (_hurd_init_dtable == NULL)
+ {
+ /* Never had a descriptor table. */
+ errno = EBADF;
+ return MACH_PORT_NULL;
+ }
+
+ if (fd < 0 || (unsigned int) fd > _hurd_init_dtablesize ||
+ _hurd_init_dtable[fd] == MACH_PORT_NULL)
+ {
+ errno = EBADF;
+ return MACH_PORT_NULL;
+ }
+ else
+ {
+ __mach_port_mod_refs (__mach_task_self (), _hurd_init_dtable[fd],
+ MACH_PORT_RIGHT_SEND, 1);
+ return _hurd_init_dtable[fd];
+ }
+}
+
+weak_alias (__getdport, getdport)