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Merge 55c9e2d790 into merged_master (Bitcoin PR bitcoin/bitcoin#24378)

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James Dorfman 2024-09-17 18:40:39 +00:00
commit 0d5e99e733
6 changed files with 71 additions and 3 deletions
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39
src/test/fuzz/util.cpp
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@ -155,6 +155,45 @@ int FuzzedSock::Connect(const sockaddr*, socklen_t) const
return 0;
}
int FuzzedSock::Bind(const sockaddr*, socklen_t) const
{
// Have a permanent error at bind_errnos[0] because when the fuzzed data is exhausted
// SetFuzzedErrNo() will always set the global errno to bind_errnos[0]. We want to
// avoid this method returning -1 and setting errno to a temporary error (like EAGAIN)
// repeatedly because proper code should retry on temporary errors, leading to an
// infinite loop.
constexpr std::array bind_errnos{
EACCES,
EADDRINUSE,
EADDRNOTAVAIL,
EAGAIN,
};
if (m_fuzzed_data_provider.ConsumeBool()) {
SetFuzzedErrNo(m_fuzzed_data_provider, bind_errnos);
return -1;
}
return 0;
}
int FuzzedSock::Listen(int) const
{
// Have a permanent error at listen_errnos[0] because when the fuzzed data is exhausted
// SetFuzzedErrNo() will always set the global errno to listen_errnos[0]. We want to
// avoid this method returning -1 and setting errno to a temporary error (like EAGAIN)
// repeatedly because proper code should retry on temporary errors, leading to an
// infinite loop.
constexpr std::array listen_errnos{
EADDRINUSE,
EINVAL,
EOPNOTSUPP,
};
if (m_fuzzed_data_provider.ConsumeBool()) {
SetFuzzedErrNo(m_fuzzed_data_provider, listen_errnos);
return -1;
}
return 0;
}
std::unique_ptr<Sock> FuzzedSock::Accept(sockaddr* addr, socklen_t* addr_len) const
{
constexpr std::array accept_errnos{