zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libc/sysdeps/linux/common/setuid.c b/ap/build/uClibc/libc/sysdeps/linux/common/setuid.c
new file mode 100644
index 0000000..7fd8c65
--- /dev/null
+++ b/ap/build/uClibc/libc/sysdeps/linux/common/setuid.c
@@ -0,0 +1,35 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * setuid() for uClibc
+ *
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+#include <unistd.h>
+#include <bits/wordsize.h>
+
+#if (__WORDSIZE == 32 && defined(__NR_setuid32)) || __WORDSIZE == 64
+# ifdef __NR_setuid32
+# undef __NR_setuid
+# define __NR_setuid __NR_setuid32
+# endif
+
+_syscall1(int, setuid, uid_t, uid)
+
+#else
+
+# define __NR___syscall_setuid __NR_setuid
+static __inline__ _syscall1(int, __syscall_setuid, __kernel_uid_t, uid)
+
+int setuid(uid_t uid)
+{
+ if (uid == (uid_t) ~ 0 || uid != (uid_t) ((__kernel_uid_t) uid)) {
+ __set_errno(EINVAL);
+ return -1;
+ }
+ return (__syscall_setuid(uid));
+}
+#endif