zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libc/sysdeps/linux/common/setgid.c b/ap/build/uClibc/libc/sysdeps/linux/common/setgid.c
new file mode 100644
index 0000000..88341ba
--- /dev/null
+++ b/ap/build/uClibc/libc/sysdeps/linux/common/setgid.c
@@ -0,0 +1,35 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * setgid() 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_setgid32)) || __WORDSIZE == 64
+# ifdef __NR_setgid32
+# undef __NR_setgid
+# define __NR_setgid __NR_setgid32
+# endif
+
+_syscall1(int, setgid, gid_t, gid)
+
+#else
+
+# define __NR___syscall_setgid __NR_setgid
+static __inline__ _syscall1(int, __syscall_setgid, __kernel_gid_t, gid)
+
+int setgid(gid_t gid)
+{
+ if (gid == (gid_t) ~ 0 || gid != (gid_t) ((__kernel_gid_t) gid)) {
+ __set_errno(EINVAL);
+ return -1;
+ }
+ return (__syscall_setgid(gid));
+}
+#endif