zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libc/sysdeps/linux/common/signalfd.c b/ap/build/uClibc/libc/sysdeps/linux/common/signalfd.c
new file mode 100644
index 0000000..a0c995a
--- /dev/null
+++ b/ap/build/uClibc/libc/sysdeps/linux/common/signalfd.c
@@ -0,0 +1,37 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * signalfd() for uClibc
+ *
+ * Copyright (C) 2008 Bernhard Reutner-Fischer <uclibc@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+#include <signal.h>
+#include <sys/signalfd.h>
+
+#if defined __NR_signalfd4
+#define __NR___syscall_signalfd4 __NR_signalfd4
+static __inline__ _syscall4(int, __syscall_signalfd4, int, fd,
+ const sigset_t *, mask, size_t, sizemask, int, flags)
+#elif defined __NR_signalfd
+#define __NR___syscall_signalfd __NR_signalfd
+static __inline__ _syscall3(int, __syscall_signalfd, int, fd,
+ const sigset_t *, mask, size_t, sizemask)
+#endif
+
+#if defined __NR_signalfd4 || defined __NR_signalfd
+int signalfd (int fd, const sigset_t *mask, int flags)
+{
+#if defined __NR___syscall_signalfd4
+ return __syscall_signalfd4(fd, mask, _NSIG / 8, flags);
+#elif defined __NR___syscall_signalfd
+ if (flags != 0) {
+ __set_errno(EINVAL);
+ return -1;
+ }
+ return __syscall_signalfd(fd, mask, _NSIG / 8);
+#endif
+}
+#endif