diff --git a/ap/lib/libssl/openssl-1.1.1o/crypto/uid.c b/ap/lib/libssl/openssl-1.1.1o/crypto/uid.c
new file mode 100644
index 0000000..a9eae36
--- /dev/null
+++ b/ap/lib/libssl/openssl-1.1.1o/crypto/uid.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2001-2021 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <openssl/crypto.h>
+#include <openssl/opensslconf.h>
+
+#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_UEFI)
+
+int OPENSSL_issetugid(void)
+{
+    return 0;
+}
+
+#elif defined(__OpenBSD__) || (defined(__FreeBSD__) && __FreeBSD__ > 2) || defined(__DragonFly__) || (defined(__GLIBC__) && defined(__FreeBSD_kernel__))
+
+# include OPENSSL_UNISTD
+
+int OPENSSL_issetugid(void)
+{
+    return issetugid();
+}
+
+#else
+
+# include OPENSSL_UNISTD
+# include <sys/types.h>
+
+# if defined(__GLIBC__) && defined(__GLIBC_PREREQ)
+#  if __GLIBC_PREREQ(2, 16)
+#   include <sys/auxv.h>
+#   define OSSL_IMPLEMENT_GETAUXVAL
+#  endif
+# elif defined(__ANDROID_API__)
+/* see https://developer.android.google.cn/ndk/guides/cpu-features */
+#  if __ANDROID_API__ >= 18
+#   include <sys/auxv.h>
+#   define OSSL_IMPLEMENT_GETAUXVAL
+#  endif
+# endif
+
+int OPENSSL_issetugid(void)
+{
+# ifdef OSSL_IMPLEMENT_GETAUXVAL
+    return getauxval(AT_SECURE) != 0;
+# else
+    return getuid() != geteuid() || getgid() != getegid();
+# endif
+}
+#endif