POSIX getlogin_r/LOGIN_NAME_MAX/TTY_NAME_MAX.

Bug: N/A
Test: ran tests
Change-Id: I97c8ecc82fb09c3fa4bb5e6f000d46f04f3d1702
diff --git a/libc/libc.arm64.map b/libc/libc.arm64.map
index bf0341a..ed1e82c 100644
--- a/libc/libc.arm64.map
+++ b/libc/libc.arm64.map
@@ -1238,6 +1238,11 @@
     wctrans_l; # introduced=26
 } LIBC_N;
 
+LIBC_P {
+  global:
+    getlogin_r; # future
+} LIBC_O;
+
 LIBC_PRIVATE {
   global:
     android_getaddrinfofornet;
@@ -1249,7 +1254,7 @@
     free_malloc_leak_info;
     get_malloc_leak_info;
     gMallocLeakZygoteChild;
-} LIBC_O;
+} LIBC_P;
 
 LIBC_DEPRECATED {
   global:
@@ -1271,4 +1276,4 @@
     malloc_disable;
     malloc_enable;
     malloc_iterate;
-} LIBC_O;
+} LIBC_P;