[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/io/getwd.c b/ap/libc/glibc/glibc-2.23/io/getwd.c
new file mode 100644
index 0000000..090bda4
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/io/getwd.c
@@ -0,0 +1,54 @@
+/* Obsolete function to get current working directory.
+ 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 <errno.h>
+#include <limits.h>
+#include <string.h>
+#include <unistd.h>
+
+
+char *
+getwd (char *buf)
+{
+#ifndef PATH_MAX
+#define PATH_MAX 1024
+#endif
+ char tmpbuf[PATH_MAX];
+
+ if (buf == NULL)
+ {
+ __set_errno (EINVAL);
+ return NULL;
+ }
+
+ if (__getcwd (tmpbuf, PATH_MAX) == NULL)
+ {
+ /* We use 1024 here since it should really be enough and because
+ this is a safe value. */
+ __strerror_r (errno, buf, 1024);
+ return NULL;
+ }
+
+ /* This is completely unsafe. Nobody can say how big the user
+ provided buffer is. Perhaps the application and the libc
+ disagree about the value of PATH_MAX. */
+ return strcpy (buf, tmpbuf);
+}
+
+link_warning (getwd,
+ "the `getwd' function is dangerous and should not be used.")