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HLE/SRV: Don't return the port handle if it isn't available when calling GetServiceHandle.

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This was incorrect behavior that somehow found its way to 3dbrew. The correct behavior is to sleep until the port becomes available again and then return a session to it.

This is currently unimplemented due to the inability to put a guest thread to sleep during HLE requests.

The correct behavior was reverse engineered by TuxSH a while ago but we never corrected the code in citra.
This commit is contained in:
Subv 2017-11-06 14:09:56 -05:00
parent d55a13c35d
commit afb6dd7747
1 changed files with 5 additions and 7 deletions
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12
src/core/hle/service/sm/srv.cpp
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@ -87,7 +87,7 @@ void SRV::GetServiceHandle(Kernel::HLERequestContext& ctx) {
size_t name_len = rp.Pop<u32>();
u32 flags = rp.Pop<u32>();
bool return_port_on_failure = (flags & 1) == 0;
bool wait_until_available = (flags & 1) == 0;
if (name_len > Service::kMaxPortSize) {
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
@ -115,12 +115,10 @@ void SRV::GetServiceHandle(Kernel::HLERequestContext& ctx) {
IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
rb.Push(session.Code());
rb.PushObjects(std::move(session).Unwrap());
} else if (session.Code() == Kernel::ERR_MAX_CONNECTIONS_REACHED && return_port_on_failure) {
LOG_WARNING(Service_SRV, "called service=%s -> ERR_MAX_CONNECTIONS_REACHED, *port*=%u",
name.c_str(), (*client_port)->GetObjectId());
IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
rb.Push(ERR_MAX_CONNECTIONS_REACHED);
rb.PushObjects(std::move(client_port).Unwrap());
} else if (session.Code() == Kernel::ERR_MAX_CONNECTIONS_REACHED && wait_until_available) {
LOG_WARNING(Service_SRV, "called service=%s -> ERR_MAX_CONNECTIONS_REACHED", name.c_str());
// TODO(Subv): Put the caller guest thread to sleep until this port becomes available again.
UNIMPLEMENTED_MSG("Unimplemented wait until port %s is available.", name.c_str());
} else {
LOG_ERROR(Service_SRV, "called service=%s -> error 0x%08X", name.c_str(),
session.Code().raw);