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982799f7a0
This works by defining a set of weak symbols in dynamic linker whose value would be provided by it. This has the same effect as preloading library that magically knows right addresses of functions shared between dynamic linker and LibC. We were previously passing the same information by rewriting values based on hardcoded library name, so the new approach seems a little nicer to me.
21 lines
536 B
C++
21 lines
536 B
C++
/*
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* Copyright (c) 2021, Gunnar Beutner <gunnar@beutner.name>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <assert.h>
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#include <link.h>
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extern "C" {
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using DlIteratePhdrCallbackFunction = int (*)(struct dl_phdr_info*, size_t, void*);
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using DlIteratePhdrFunction = int (*)(DlIteratePhdrCallbackFunction, void*);
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[[gnu::weak]] DlIteratePhdrFunction __dl_iterate_phdr;
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int dl_iterate_phdr(int (*callback)(struct dl_phdr_info* info, size_t size, void* data), void* data)
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{
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return __dl_iterate_phdr(callback, data);
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}
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}
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