zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libc/sysdeps/linux/common/fchmodat.c b/ap/build/uClibc/libc/sysdeps/linux/common/fchmodat.c
new file mode 100644
index 0000000..8224a52
--- /dev/null
+++ b/ap/build/uClibc/libc/sysdeps/linux/common/fchmodat.c
@@ -0,0 +1,37 @@
+/*
+ * fchmodat() for uClibc
+ *
+ * Copyright (C) 2009 Analog Devices Inc.
+ * Copyright (C) 2012 Mike Frysinger
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <fcntl.h>
+#include <sys/syscall.h>
+#include <sys/stat.h>
+
+#ifdef __NR_fchmodat
+/*
+ * The kernel takes 3 args, but userland takes 4.
+ * We have to process all the flags ourselves.
+ */
+int fchmodat(int fd, const char *file, mode_t mode, int flag)
+{
+ /* We only support one flag atm ... */
+ if (flag & ~AT_SYMLINK_NOFOLLOW) {
+ __set_errno(EINVAL);
+ return -1;
+ }
+
+ /* ... but Linux doesn't support perms on symlinks. */
+ if (flag & AT_SYMLINK_NOFOLLOW) {
+ __set_errno(ENOTSUP);
+ return -1;
+ }
+
+ return INLINE_SYSCALL(fchmodat, 3, fd, file, mode);
+}
+#else
+/* should add emulation with fchmod() and /proc/self/fd/ ... */
+#endif