[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/sysdeps/posix/sigintr.c b/ap/libc/glibc/glibc-2.23/sysdeps/posix/sigintr.c
new file mode 100644
index 0000000..bce75b7
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/sysdeps/posix/sigintr.c
@@ -0,0 +1,54 @@
+/* Copyright (C) 1992-2016 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 <stddef.h>
+#include <signal.h>
+#include <errno.h>
+
+/* If INTERRUPT is nonzero, make signal SIG interrupt system calls
+ (causing them to fail with EINTR); if INTERRUPT is zero, make system
+ calls be restarted after signal SIG. */
+int
+siginterrupt (int sig, int interrupt)
+{
+#ifdef SA_RESTART
+ extern sigset_t _sigintr attribute_hidden; /* Defined in signal.c. */
+ struct sigaction action;
+
+ if (__sigaction (sig, (struct sigaction *) NULL, &action) < 0)
+ return -1;
+
+ if (interrupt)
+ {
+ __sigaddset (&_sigintr, sig);
+ action.sa_flags &= ~SA_RESTART;
+ }
+ else
+ {
+ __sigdelset (&_sigintr, sig);
+ action.sa_flags |= SA_RESTART;
+ }
+
+ if (__sigaction (sig, &action, (struct sigaction *) NULL) < 0)
+ return -1;
+
+ return 0;
+#else
+ __set_errno (ENOSYS);
+ return -1;
+#endif
+}