zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libc/sysdeps/linux/common/setresuid.c b/ap/build/uClibc/libc/sysdeps/linux/common/setresuid.c
new file mode 100644
index 0000000..022ccfe
--- /dev/null
+++ b/ap/build/uClibc/libc/sysdeps/linux/common/setresuid.c
@@ -0,0 +1,41 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * setresuid() 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>
+#if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__
+#include <unistd.h>
+
+#if defined(__NR_setresuid32)
+# undef __NR_setresuid
+# define __NR_setresuid __NR_setresuid32
+
+_syscall3(int, setresuid, uid_t, ruid, uid_t, euid, uid_t, suid)
+libc_hidden_def(setresuid)
+
+#elif defined(__NR_setresuid)
+
+# define __NR___syscall_setresuid __NR_setresuid
+static __inline__ _syscall3(int, __syscall_setresuid,
+ __kernel_uid_t, rgid, __kernel_uid_t, egid, __kernel_uid_t, sgid)
+
+int setresuid(uid_t ruid, uid_t euid, uid_t suid)
+{
+ if (((ruid + 1) > (uid_t) ((__kernel_uid_t) - 1U))
+ || ((euid + 1) > (uid_t) ((__kernel_uid_t) - 1U))
+ || ((suid + 1) > (uid_t) ((__kernel_uid_t) - 1U))) {
+ __set_errno(EINVAL);
+ return -1;
+ }
+ return (__syscall_setresuid(ruid, euid, suid));
+}
+libc_hidden_def(setresuid)
+
+#endif
+
+#endif