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Kernel/IPC: Support translation of null handles 

Missed this in my first implementation. Thanks to @wwylele for pointing
out that this was missing.
This commit is contained in:
Yuri Kunde Schlesner 2017-06-21 14:27:03 -07:00
parent c4f0927a62
commit f64d0b3f26
2 changed files with 35 additions and 7 deletions
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11
src/core/hle/kernel/hle_ipc.cpp
View File

@ -67,11 +67,14 @@ 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;
if (handle != 0) {
object = src_table.GetGeneric(handle);
ASSERT(object != nullptr); // TODO(yuriks): Return error ASSERT(object != nullptr); // TODO(yuriks): Return error
if (descriptor == IPC::DescriptorType::MoveHandle) { if (descriptor == IPC::DescriptorType::MoveHandle) {
src_table.Close(handle); 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;
if (object != nullptr) {
// TODO(yuriks): Figure out the proper error handling for if this fails // TODO(yuriks): Figure out the proper error handling for if this fails
Handle handle = dst_table.Create(object).Unwrap(); handle = dst_table.Create(object).Unwrap();
}
dst_cmdbuf[i++] = handle; dst_cmdbuf[i++] = handle;
} }
break; break;

23
src/tests/core/hle/kernel/hle_ipc.cpp
View File

@ -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();