Method open

src/test/fuzz/util.cpp:251–290

}

FILE* FuzzedFileProvider::open()
{
    SetFuzzedErrNo(m_fuzzed_data_provider);
    if (m_fuzzed_data_provider.ConsumeBool()) {
        return nullptr;
    }
    std::string mode;
    CallOneOf(
        m_fuzzed_data_provider,
        [&] {
            mode = "r";
        },
        [&] {
            mode = "r+";
        },
        [&] {
            mode = "w";
        },
        [&] {
            mode = "w+";
        },
        [&] {
            mode = "a";
        },
        [&] {
            mode = "a+";
        });
#if defined _GNU_SOURCE && (defined(__linux__) || defined(__FreeBSD__))
    const cookie_io_functions_t io_hooks = {
        FuzzedFileProvider::read,
        FuzzedFileProvider::write,
        FuzzedFileProvider::seek,
        FuzzedFileProvider::close,
    };
    return fopencookie(this, mode.c_str(), io_hooks);
#else
    (void)mode;
    return nullptr;
#endif
}

ssize_t FuzzedFileProvider::read(void* cookie, char* buf, size_t size)
{