zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libc/sysdeps/linux/common/setreuid.c b/ap/build/uClibc/libc/sysdeps/linux/common/setreuid.c
new file mode 100644
index 0000000..a9eea6d
--- /dev/null
+++ b/ap/build/uClibc/libc/sysdeps/linux/common/setreuid.c
@@ -0,0 +1,40 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * setreuid() 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_setreuid32)) || __WORDSIZE == 64
+# ifdef __NR_setreuid32
+# undef __NR_setreuid
+# define __NR_setreuid __NR_setreuid32
+# endif
+
+_syscall2(int, setreuid, uid_t, ruid, uid_t, euid)
+
+#else
+
+# define __NR___syscall_setreuid __NR_setreuid
+static __inline__ _syscall2(int, __syscall_setreuid,
+ __kernel_uid_t, ruid, __kernel_uid_t, euid)
+
+int setreuid(uid_t ruid, uid_t euid)
+{
+ if (((ruid + 1) > (uid_t) ((__kernel_uid_t) - 1U))
+ || ((euid + 1) > (uid_t) ((__kernel_uid_t) - 1U))) {
+ __set_errno(EINVAL);
+ return -1;
+ }
+ return (__syscall_setreuid(ruid, euid));
+}
+#endif
+
+libc_hidden_def(setreuid)