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Userland: Add LibSystem and funnel all syscalls through it
This achieves two things: - Programs can now intentionally perform arbitrary syscalls by calling syscall(). This allows us to work on things like syscall fuzzing. - It restricts the ability of userspace to make syscalls to a single 4KB page of code. In order to call the kernel directly, an attacker must now locate this page and call through it.
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47 changed files with 164 additions and 47 deletions
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@ -504,7 +504,6 @@ inline uintptr_t invoke(Function function, T1 arg1, T2 arg2, T3 arg3)
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#define __ENUMERATE_SYSCALL(x) using Syscall::SC_##x;
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ENUMERATE_SYSCALLS(__ENUMERATE_SYSCALL)
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#undef __ENUMERATE_SYSCALL
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#define syscall Syscall::invoke
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}
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