[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/sysdeps/posix/sigsetmask.c b/ap/libc/glibc/glibc-2.23/sysdeps/posix/sigsetmask.c
new file mode 100644
index 0000000..bb16262
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/sysdeps/posix/sigsetmask.c
@@ -0,0 +1,38 @@
+/* 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 <signal.h>
+
+#include <sigset-cvt-mask.h>
+
+/* Set the mask of blocked signals to MASK, returning the old mask. */
+int
+__sigsetmask (int mask)
+{
+ sigset_t set, oset;
+
+ if (sigset_set_old_mask (&set, mask) < 0)
+ return -1;
+
+ if (__sigprocmask (SIG_SETMASK, &set, &oset) < 0)
+ return -1;
+
+ return sigset_get_old_mask (&oset);
+}
+
+weak_alias (__sigsetmask, sigsetmask)