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Map pages in read-only ELF sections as non-writable.

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This is so cool! :^) Now you'll crash if you try to write into your
.text or .rodata segments.
This commit is contained in:
Andreas Kling 2018-11-03 11:36:45 +01:00
parent aa6d06b47e
commit da13c9a264
4 changed files with 26 additions and 6 deletions
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4
Kernel/MemoryManager.h
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@ -38,7 +38,7 @@ private:
};
struct Region : public Retainable<Region> {
Region(LinearAddress, size_t, RetainPtr<Zone>&&, String&&);
Region(LinearAddress, size_t, RetainPtr<Zone>&&, String&&, bool r, bool w);
~Region();
RetainPtr<Region> clone();
@ -46,6 +46,8 @@ struct Region : public Retainable<Region> {
size_t size { 0 };
RetainPtr<Zone> zone;
String name;
bool is_readable { true };
bool is_writable { true };
};
#define MM MemoryManager::the()