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Factor checks under separate feature flags. (#587)

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All the checks and mitigations have been placed under feature flags.
These can be controlled by defining

  SNMALLOC_CHECK_CLIENT_MITIGATIONS

This can take a term that represents the mitigations that should be enabled.
E.g.
  -DSNMALLOC_CHECK_CLIENT_MITIGATIONS=nochecks+random_pagemap

The CMake uses this to build numerous versions of the LD_PRELOAD library and
tests to allow individual features to be benchmarked.

Co-authored-by: Nathaniel Wesley Filardo <nfilardo@microsoft.com>
This commit is contained in:
Matthew Parkinson
2023-03-23 13:41:02 +00:00
committed by GitHub
parent 848db74cfc
commit ccca98a709
25 changed files with 753 additions and 435 deletions
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7
src/test/func/domestication/domestication.cc
View File

@@ -129,11 +129,8 @@ namespace snmalloc
int main()
{
# if defined(SNMALLOC_CHECK_CLIENT)
static constexpr bool pagemap_randomize = !aal_supports<StrictProvenance>;
# else
static constexpr bool pagemap_randomize = false;
# endif
static constexpr bool pagemap_randomize =
mitigations(random_pagemap) & !aal_supports<StrictProvenance>;
snmalloc::CustomConfig::Pagemap::concretePagemap.init<pagemap_randomize>();
snmalloc::CustomConfig::Authmap::init();

7
src/test/func/pagemap/pagemap.cc
View File

@@ -81,11 +81,8 @@ void test_pagemap(bool bounded)
}
else
{
#if defined(SNMALLOC_CHECK_CLIENT)
static constexpr bool pagemap_randomize = !aal_supports<StrictProvenance>;
#else
static constexpr bool pagemap_randomize = false;
#endif
static constexpr bool pagemap_randomize =
mitigations(random_pagemap) && !aal_supports<StrictProvenance>;
pagemap_test_unbound.init<pagemap_randomize>();
pagemap_test_unbound.register_range(low, high - low);