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Merge pull request #2796 from yuriks/hle-null-handles

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Kernel/IPC: Support translation of null handles
This commit is contained in:
bunnei 2017-06-22 21:59:25 -04:00 • committed by GitHub
commit 8223d18088
2 changed files with 36 additions and 8 deletions
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19
src/core/hle/kernel/hle_ipc.cpp
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@ -67,10 +67,13 @@ ResultCode HLERequestContext::PopulateFromIncomingCommandBuffer(const u32_le* sr
ASSERT(i + num_handles <= command_size); // TODO(yuriks): Return error ASSERT(i + num_handles <= command_size); // TODO(yuriks): Return error
for (u32 j = 0; j < num_handles; ++j) { for (u32 j = 0; j < num_handles; ++j) {
Handle handle = src_cmdbuf[i]; Handle handle = src_cmdbuf[i];
SharedPtr<Object> object = src_table.GetGeneric(handle); SharedPtr<Object> object = nullptr;
ASSERT(object != nullptr); // TODO(yuriks): Return error if (handle != 0) {
if (descriptor == IPC::DescriptorType::MoveHandle) { object = src_table.GetGeneric(handle);
src_table.Close(handle); ASSERT(object != nullptr); // TODO(yuriks): Return error
if (descriptor == IPC::DescriptorType::MoveHandle) {
src_table.Close(handle);
}
} }
cmd_buf[i++] = AddOutgoingHandle(std::move(object)); cmd_buf[i++] = AddOutgoingHandle(std::move(object));
@ -112,9 +115,11 @@ ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(u32_le* dst_cmdbuf, P
ASSERT(i + num_handles <= command_size); ASSERT(i + num_handles <= command_size);
for (u32 j = 0; j < num_handles; ++j) { for (u32 j = 0; j < num_handles; ++j) {
SharedPtr<Object> object = GetIncomingHandle(cmd_buf[i]); SharedPtr<Object> object = GetIncomingHandle(cmd_buf[i]);
Handle handle = 0;
// TODO(yuriks): Figure out the proper error handling for if this fails if (object != nullptr) {
Handle handle = dst_table.Create(object).Unwrap(); // TODO(yuriks): Figure out the proper error handling for if this fails
handle = dst_table.Create(object).Unwrap();
}
dst_cmdbuf[i++] = handle; dst_cmdbuf[i++] = handle;
} }
break; break;

25
src/tests/core/hle/kernel/hle_ipc.cpp
View file

@ -18,7 +18,7 @@ static SharedPtr<Object> MakeObject() {
return Event::Create(ResetType::OneShot); return Event::Create(ResetType::OneShot);
} }
TEST_CASE("HLERequestContext::PopoulateFromIncomingCommandBuffer", "[core][kernel]") { TEST_CASE("HLERequestContext::PopulateFromIncomingCommandBuffer", "[core][kernel]") {
auto session = std::get<SharedPtr<ServerSession>>(ServerSession::CreateSessionPair()); auto session = std::get<SharedPtr<ServerSession>>(ServerSession::CreateSessionPair());
HLERequestContext context(std::move(session)); HLERequestContext context(std::move(session));
@ -94,6 +94,18 @@ TEST_CASE("HLERequestContext::PopoulateFromIncomingCommandBuffer", "[core][kerne
REQUIRE(context.GetIncomingHandle(output[5]) == c); REQUIRE(context.GetIncomingHandle(output[5]) == c);
} }
SECTION("translates null handles") {
const u32_le input[]{
IPC::MakeHeader(0, 0, 2), IPC::MoveHandleDesc(1), 0,
};
auto result = context.PopulateFromIncomingCommandBuffer(input, *process, handle_table);
REQUIRE(result == RESULT_SUCCESS);
auto* output = context.CommandBuffer();
REQUIRE(context.GetIncomingHandle(output[2]) == nullptr);
}
SECTION("translates CallingPid descriptors") { SECTION("translates CallingPid descriptors") {
const u32_le input[]{ const u32_le input[]{
IPC::MakeHeader(0, 0, 2), IPC::CallingPidDesc(), 0x98989898, IPC::MakeHeader(0, 0, 2), IPC::CallingPidDesc(), 0x98989898,
@ -171,6 +183,17 @@ TEST_CASE("HLERequestContext::WriteToOutgoingCommandBuffer", "[core][kernel]") {
REQUIRE(handle_table.GetGeneric(output[4]) == b); REQUIRE(handle_table.GetGeneric(output[4]) == b);
} }
SECTION("translates null handles") {
input[0] = IPC::MakeHeader(0, 0, 2);
input[1] = IPC::MoveHandleDesc(1);
input[2] = context.AddOutgoingHandle(nullptr);
auto result = context.WriteToOutgoingCommandBuffer(output, *process, handle_table);
REQUIRE(result == RESULT_SUCCESS);
REQUIRE(output[2] == 0);
}
SECTION("translates multi-handle descriptors") { SECTION("translates multi-handle descriptors") {
auto a = MakeObject(); auto a = MakeObject();
auto b = MakeObject(); auto b = MakeObject();