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IPv4: Non-blocking IPv4 sockets should return -EAGAIN in recvfrom()

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...if there are no packets in the receive queue.
This commit is contained in:
Andreas Kling 2019-11-04 13:41:36 +01:00
parent 43a6c70c2a
commit ecd23ce1a1
1 changed files with 3 additions and 0 deletions
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3
Kernel/Net/IPv4Socket.cpp
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@ -222,6 +222,9 @@ ssize_t IPv4Socket::recvfrom(FileDescription& description, void* buffer, size_t
ReceivedPacket packet; ReceivedPacket packet;
{ {
LOCKER(lock()); LOCKER(lock());
if (m_receive_queue.is_empty() && !description.is_blocking())
return -EAGAIN;
if (!m_receive_queue.is_empty()) { if (!m_receive_queue.is_empty()) {
packet = m_receive_queue.take_first(); packet = m_receive_queue.take_first();
m_can_read = !m_receive_queue.is_empty(); m_can_read = !m_receive_queue.is_empty();