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| | NoCfiIcall (Functor function) |
| | Constructs this object.
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| |
| | NoCfiIcall () |
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| template<typename PointerType, typename = std::enable_if_t< std::is_same<typename std::remove_cv<PointerType>::type, void*>::value>> |
| | NoCfiIcall (PointerType function) |
| |
| void | SetPointer (Functor function) |
| | Updates the pointer to the function to be called.
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| |
| template<typename PointerType, typename = std::enable_if_t< std::is_same<typename std::remove_cv<PointerType>::type, void*>::value>> |
| void | SetPointer (PointerType function) |
| |
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template<typename... RunArgs> |
| decltype(auto) | operator() (RunArgs &&... args) const |
| | Calls the function without sanitization by cfi-icall.
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| |
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| operator bool () const |
| | Returns true if not nullptr.
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| |
template<typename Functor>
class crashpad::NoCfiIcall< Functor >
Disables cfi-icall for calls made through a function pointer.
Clang provides several Control-Flow-Integrity (CFI) sanitizers, among them, cfi-icall, which attempts to verify that the dynamic type of a function matches the static type of the function pointer used to call it.
https://clang.llvm.org/docs/ControlFlowIntegrity.html#indirect-function-call-checking
However, cfi-icall does not have enough information to check indirect calls to functions in other modules, such as through the pointers returned by dlsym(). In these cases, CFI aborts the program upon executing the indirect call.
This class encapsulates cross-DSO function pointers to disable cfi-icall precisely when calling these pointers.
1.13.2