gumjs: Add NativePointer#readVolatile() #738
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oleavr
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Jun 13, 2023
bindings/gumjs/gumquickmemory.c
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| @@ -192,6 +194,7 @@ static const JSCFunctionListEntry gumjs_memory_entries[] = | |||
| GUMJS_EXPORT_MEMORY_READ_WRITE ("Utf8String", UTF8_STRING), | |||
| GUMJS_EXPORT_MEMORY_READ_WRITE ("Utf16String", UTF16_STRING), | |||
| GUMJS_EXPORT_MEMORY_READ_WRITE ("AnsiString", ANSI_STRING), | |||
| JS_CFUNC_DEF ("readVolatileByteArray", 0, gum_quick_memory_read_volatile_array), | |||
For when memory is being read in a moment where another thread may potentially unmap it or change its protection. Since we're using gum_memory_read(), which results in a system call, we don't have to worry about OS-exceptions on invalid memory addresses. This makes this API particularly useful on newer versions of iOS, where Exceptor may not be functional.
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Adds Memory.readVolatileByteArray to quickjs/v8.
This uses
gum_memory_readinstead ofmemcpyused by Memory.readByteArray to prevent os-exceptions on invalid memory addresses