gh-81652: Add MAP_ALIGNED_SUPER FreeBSD and MAP_CONCEAL OpenBSD constants (gh-102191)

Author: yeojin-k9

Doc/library/mmap.rst

@@ -370,11 +370,19 @@ MAP_* Constants
           MAP_ANONYMOUS
           MAP_POPULATE
           MAP_STACK
+          MAP_ALIGNED_SUPER
+          MAP_CONCEAL
 
-    These are the various flags that can be passed to :meth:`mmap.mmap`. Note that some options might not be present on some systems.
+    These are the various flags that can be passed to :meth:`mmap.mmap`.  :data:`MAP_ALIGNED_SUPER`
+    is only available at FreeBSD and :data:`MAP_CONCEAL` is only available at OpenBSD.  Note
+    that some options might not be present on some systems.
 
     .. versionchanged:: 3.10
-       Added MAP_POPULATE constant.
+       Added :data:`MAP_POPULATE` constant.
 
     .. versionadded:: 3.11
-       Added MAP_STACK constant.
+       Added :data:`MAP_STACK` constant.
+
+    .. versionadded:: 3.12
+       Added :data:`MAP_ALIGNED_SUPER` constant.
+       Added :data:`MAP_CONCEAL` constant.

Misc/ACKS

@@ -930,6 +930,7 @@ Derek D. Kim
 Gihwan Kim
 Jan Kim
 Taek Joo Kim
+Yeojin Kim
 Sam Kimbrel
 Tomohiko Kinebuchi
 James King

Misc/NEWS.d/next/Library/2023-02-23-20-39-52.gh-issue-81652.Vxz0Mr.rst

@@ -0,0 +1,2 @@
+Add :data:`mmap.MAP_ALIGNED_SUPER` FreeBSD and :data:`mmap.MAP_CONCEAL`
+OpenBSD constants to :mod:`mmap`. Patch by Yeojin Kim.

Modules/mmapmodule.c

@@ -1603,6 +1603,12 @@ mmap_exec(PyObject *module)
     // Mostly a no-op on Linux and NetBSD, but useful on OpenBSD
     // for stack usage (even on x86 arch)
     ADD_INT_MACRO(module, MAP_STACK);
+#endif
+#ifdef MAP_ALIGNED_SUPER
+    ADD_INT_MACRO(module, MAP_ALIGNED_SUPER);
+#endif
+#ifdef MAP_CONCEAL
+    ADD_INT_MACRO(module, MAP_CONCEAL);
 #endif
     if (PyModule_AddIntConstant(module, "PAGESIZE", (long)my_getpagesize()) < 0 ) {
         return -1;