Squashed commit of the following:

commit 3007df0d153ade6d328321dad8f88d63869159c8
Merge: 7557851 cd14d68
Author: Carl Pearson <pearson@illinois.edu>
Date:   Wed Sep 25 09:59:54 2019 -0500

    Merge branch 'master' into feature/aslr

commit 7557851508f0e1c2d75244267c5f78fb3d1ca303
Author: Carl Pearson <pearson@illinois.edu>
Date:   Tue Sep 24 07:50:15 2019 -0500

    wish list

commit 0bbbac31f354c16ae1942dbfe4683a66ec260498
Author: Carl Pearson <pearson@illinois.edu>
Date:   Tue Sep 24 07:49:36 2019 -0500

    ASLR documentation

commit f1ae37e057792696a739e30ecdbd09e071b8a7d4
Author: Carl Pearson <pearson@illinois.edu>
Date:   Tue Sep 24 07:45:54 2019 -0500

    add ASLR interface

include/perfect/aslr.hpp

@@ -0,0 +1,40 @@
+#pragma once
+
+#include <cerrno>
+#include <iostream>
+
+#ifdef __linux__
+#include "detail/os/linux.hpp"
+#endif
+#include "init.hpp"
+#include "result.hpp"
+
+namespace perfect {
+
+struct AslrState {
+#ifdef __linux__
+  unsigned long persona;
+#else
+#error "unsupported platform"
+#endif
+};
+
+Result get_aslr(AslrState &state) {
+  int persona;
+  PERFECT_SUCCESS_OR_RETURN(detail::get_personality(persona));
+  state.persona = persona;
+  return Result::SUCCESS;
+}
+
+Result set_aslr(const AslrState &state) {
+  return detail::set_personality(state.persona);
+}
+
+Result disable_aslr() {
+  int persona;
+  PERFECT_SUCCESS_OR_RETURN(detail::get_personality(persona));
+  persona |= ADDR_NO_RANDOMIZE;
+  return detail::set_personality(persona);
+}
+
+} // namespace perfect

include/perfect/detail/os/linux.hpp

@@ -12,6 +12,7 @@
 #include <sched.h>
 #include <sys/types.h>
 #include <unistd.h>
+#include <sys/personality.h>
 
 #include "perfect/result.hpp"
 
@@ -88,4 +89,24 @@ size_t cache_linesize() {
 #endif
 }
 
+namespace detail {
+Result get_personality(int &persona) {
+  int ret = personality(0xffffffff);
+  if (-1 == ret) {
+    return Result::UNKNOWN;
+  } else {
+    persona = ret;
+  }
+  return Result::SUCCESS;
+}
+
+Result set_personality(const int persona) {
+  int ret = personality(persona);
+  if (-1 == ret) {
+    return Result::UNKNOWN;
+  }
+  return Result::SUCCESS;
+}
+}
+
 } // namespace perfect