[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/nptl/pthread_sigmask.c b/ap/libc/glibc/glibc-2.23/nptl/pthread_sigmask.c
new file mode 100644
index 0000000..b87f7fc
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/nptl/pthread_sigmask.c
@@ -0,0 +1,36 @@
+/* Examine and change blocked signals for a thread. Generic POSIX version.
+ Copyright (C) 2014-2016 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 <signal.h>
+#include <pthreadP.h>
+
+#if defined SIGCANCEL || defined SIGTIMER || defined SIGSETXID
+# error "This implementation assumes no internal-only signal numbers."
+#endif
+
+int
+pthread_sigmask (int how, const sigset_t *newmask, sigset_t *oldmask)
+{
+ /* Here we assume that sigprocmask actually does everything right.
+ The only difference is the return value protocol. */
+ int result = sigprocmask (how, newmask, oldmask);
+ if (result < 0)
+ result = errno;
+ return result;
+}