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kernel/svc: Implement svcGetProcessList

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This service function simply copies out a specified number of kernel
process IDs, while simultaneously reporting the total number of
processes.
This commit is contained in:
Lioncash 2019-03-20 15:03:52 -04:00
parent 628153cccd
commit cb2bce8006
4 changed files with 53 additions and 1 deletions
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39
src/core/hle/kernel/svc.cpp
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@ -1983,6 +1983,43 @@ static ResultCode SetResourceLimitLimitValue(Handle resource_limit, u32 resource
return RESULT_SUCCESS;
}
static ResultCode GetProcessList(u32* out_num_processes, VAddr out_process_ids,
u32 out_process_ids_size) {
LOG_DEBUG(Kernel_SVC, "called. out_process_ids=0x{:016X}, out_process_ids_size={}",
out_process_ids, out_process_ids_size);
// If the supplied size is negative or greater than INT32_MAX / sizeof(u64), bail.
if ((out_process_ids_size & 0xF0000000) != 0) {
LOG_ERROR(Kernel_SVC,
"Supplied size outside [0, 0x0FFFFFFF] range. out_process_ids_size={}",
out_process_ids_size);
return ERR_OUT_OF_RANGE;
}
const auto& kernel = Core::System::GetInstance().Kernel();
const auto& vm_manager = kernel.CurrentProcess()->VMManager();
const auto total_copy_size = out_process_ids_size * sizeof(u64);
if (out_process_ids_size > 0 &&
!vm_manager.IsWithinAddressSpace(out_process_ids, total_copy_size)) {
LOG_ERROR(Kernel_SVC, "Address range outside address space. begin=0x{:016X}, end=0x{:016X}",
out_process_ids, out_process_ids + total_copy_size);
return ERR_INVALID_ADDRESS_STATE;
}
const auto& process_list = kernel.GetProcessList();
const auto num_processes = process_list.size();
const auto copy_amount = std::min(std::size_t{out_process_ids_size}, num_processes);
for (std::size_t i = 0; i < copy_amount; ++i) {
Memory::Write64(out_process_ids, process_list[i]->GetProcessID());
out_process_ids += sizeof(u64);
}
*out_num_processes = static_cast<u32>(num_processes);
return RESULT_SUCCESS;
}
namespace {
struct FunctionDef {
using Func = void();
@ -2095,7 +2132,7 @@ static const FunctionDef SVC_Table[] = {
{0x62, nullptr, "TerminateDebugProcess"},
{0x63, nullptr, "GetDebugEvent"},
{0x64, nullptr, "ContinueDebugEvent"},
{0x65, nullptr, "GetProcessList"},
{0x65, SvcWrap<GetProcessList>, "GetProcessList"},
{0x66, nullptr, "GetThreadList"},
{0x67, nullptr, "GetDebugThreadContext"},
{0x68, nullptr, "SetDebugThreadContext"},