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/*
* Copyright (C) 2023, Greg Manning <gmanning@rapitasystems.com>
*
* This hook, __pfnDliFailureHook2, is documented in the microsoft documentation here:
* https://learn.microsoft.com/en-us/cpp/build/reference/error-handling-and-notification
* It gets called when a delay-loaded DLL encounters various errors.
* We handle the specific case of a DLL looking for a "qemu.exe",
* and give it the running executable (regardless of what it is named).
*
* This work is licensed under the terms of the GNU LGPL, version 2 or later.
* See the COPYING.LIB file in the top-level directory.
*/
#include <windows.h>
#include <delayimp.h>
FARPROC WINAPI dll_failure_hook(unsigned dliNotify, PDelayLoadInfo pdli);
PfnDliHook __pfnDliFailureHook2 = dll_failure_hook;
FARPROC WINAPI dll_failure_hook(unsigned dliNotify, PDelayLoadInfo pdli) {
if (dliNotify == dliFailLoadLib) {
/* If the failing request was for qemu.exe, ... */
if (strcmp(pdli->szDll, "qemu.exe") == 0) {
/* Then pass back a pointer to the top level module. */
HMODULE top = GetModuleHandle(NULL);
return (FARPROC) top;
}
}
/* Otherwise we can't do anything special. */
return 0;
}
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