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Code Issues Releases Activity

kern: implement port debug

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This commit is contained in:
Michael Scire 2020-12-10 01:44:27 -08:00
parent 8a4bf6a0a8
commit 0acd79c8c2
6 changed files with 132 additions and 6 deletions
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4
libraries/libmesosphere/include/mesosphere/kern_k_client_port.hpp
View file

@ -42,6 +42,10 @@ namespace ams::kern {
constexpr const KPort *GetParent() const { return this->parent; }
ALWAYS_INLINE s32 GetNumSessions() const { return this->num_sessions; }
ALWAYS_INLINE s32 GetPeakSessions() const { return this->peak_sessions; }
ALWAYS_INLINE s32 GetMaxSessions() const { return this->max_sessions; }
bool IsLight() const;
/* Overridden virtual functions. */

3
libraries/libmesosphere/include/mesosphere/kern_k_dump_object.hpp
View file

@ -31,4 +31,7 @@ namespace ams::kern::KDumpObject {
void DumpProcess();
void DumpProcess(u64 process_id);
void DumpPort();
void DumpPort(u64 process_id);
}

2
libraries/libmesosphere/include/mesosphere/kern_k_session.hpp
View file

@ -71,6 +71,8 @@ namespace ams::kern {
KServerSession &GetServerSession() { return this->server; }
const KClientSession &GetClientSession() const { return this->client; }
const KServerSession &GetServerSession() const { return this->server; }
const KClientPort *GetParent() const { return this->port; }
};
}

109
libraries/libmesosphere/source/kern_k_dump_object.cpp
View file

@ -129,6 +129,81 @@ namespace ams::kern::KDumpObject {
MESOSPHERE_RELEASE_LOG("Process ID=%3lu index=%3zu State=%d (%s)\n", process->GetId(), process->GetSlabIndex(), process->GetState(), process->GetName());
}
void DumpPort(const KProcess::ListAccessor &accessor, KProcess *process) {
MESOSPHERE_RELEASE_LOG("Dump Port Process ID=%lu (%s)\n", process->GetId(), process->GetName());
const auto end = accessor.end();
const auto &handle_table = process->GetHandleTable();
const size_t max_handles = handle_table.GetMaxCount();
for (size_t i = 0; i < max_handles; ++i) {
/* Get the object + handle. */
ams::svc::Handle handle = ams::svc::InvalidHandle;
KScopedAutoObject obj = handle_table.GetObjectByIndex(std::addressof(handle), i);
if (obj.IsNull()) {
continue;
}
/* Process the object as a port. */
if (auto *server = obj->DynamicCast<KServerPort *>(); server != nullptr) {
const KClientPort *client = std::addressof(server->GetParent()->GetClientPort());
const uintptr_t port_name = server->GetParent()->GetName();
/* Get the port name. */
char name[9] = {};
{
/* Find the client port process. */
KScopedAutoObject<KProcess> client_port_process;
{
for (auto it = accessor.begin(); it != end && client_port_process.IsNull(); ++it) {
KProcess *cur = static_cast<KProcess *>(std::addressof(*it));
for (size_t j = 0; j < cur->GetHandleTable().GetMaxCount(); ++j) {
ams::svc::Handle cur_h = ams::svc::InvalidHandle;
KScopedAutoObject cur_o = cur->GetHandleTable().GetObjectByIndex(std::addressof(cur_h), j);
if (cur_o.IsNotNull()) {
if (cur_o.GetPointerUnsafe() == client) {
client_port_process = cur;
break;
}
}
}
}
}
/* Read the port name. */
if (client_port_process.IsNotNull()) {
if (R_FAILED(client_port_process->GetPageTable().CopyMemoryFromLinearToKernel(KProcessAddress(name), 8, port_name, KMemoryState_None, KMemoryState_None, KMemoryPermission_UserRead, KMemoryAttribute_None, KMemoryAttribute_None))) {
std::memset(name, 0, sizeof(name));
}
for (size_t i = 0; i < 8 && name[i] != 0; i++) {
if (name[i] > 0x7F) {
std::memset(name, 0, sizeof(name));
break;
}
}
}
MESOSPHERE_RELEASE_LOG("%-9s: Handle %08x Obj=%p Cur=%3d Max=%3d Peak=%3d\n", name, handle, obj.GetPointerUnsafe(), client->GetNumSessions(), client->GetMaxSessions(), client->GetPeakSessions());
/* Identify any sessions. */
{
for (auto it = accessor.begin(); it != end && client_port_process.IsNull(); ++it) {
KProcess *cur = static_cast<KProcess *>(std::addressof(*it));
for (size_t j = 0; j < cur->GetHandleTable().GetMaxCount(); ++j) {
ams::svc::Handle cur_h = ams::svc::InvalidHandle;
KScopedAutoObject cur_o = cur->GetHandleTable().GetObjectByIndex(std::addressof(cur_h), j);
if (cur_o.IsNull()) {
continue;
}
if (auto *session = cur_o->DynamicCast<KClientSession *>(); session != nullptr && session->GetParent()->GetParent() == client) {
MESOSPHERE_RELEASE_LOG(" Client %p Server %p %-12s: PID=%3lu\n", session, std::addressof(session->GetParent()->GetServerSession()), cur->GetName(), cur->GetId());
}
}
}
}
}
}
}
}
}
void DumpThread() {
@ -258,4 +333,38 @@ namespace ams::kern::KDumpObject {
MESOSPHERE_RELEASE_LOG("\n");
}
void DumpPort() {
MESOSPHERE_RELEASE_LOG("Dump Port\n");
{
/* Lock the list. */
KProcess::ListAccessor accessor;
const auto end = accessor.end();
/* Dump each process. */
for (auto it = accessor.begin(); it != end; ++it) {
DumpPort(accessor, static_cast<KProcess *>(std::addressof(*it)));
}
}
MESOSPHERE_RELEASE_LOG("\n");
}
void DumpPort(u64 process_id) {
MESOSPHERE_RELEASE_LOG("Dump Port\n");
{
/* Find and dump the target process. */
if (KProcess *process = KProcess::GetProcessFromId(process_id); process != nullptr) {
ON_SCOPE_EXIT { process->Close(); };
/* Lock the list. */
KProcess::ListAccessor accessor;
DumpPort(accessor, process);
}
}
MESOSPHERE_RELEASE_LOG("\n");
}
}

7
libraries/libmesosphere/source/svc/kern_svc_kernel_debug.cpp
View file

@ -73,6 +73,13 @@ namespace ams::kern::svc {
}
}
break;
case ams::svc::KernelDebugType_Port:
if (arg0 == static_cast<u64>(-1)) {
KDumpObject::DumpPort();
} else {
KDumpObject::DumpPort(arg0);
}
break;
default:
break;
}

1
libraries/libvapours/include/vapours/svc/svc_types_common.hpp
View file

@ -478,6 +478,7 @@ namespace ams::svc {
KernelDebugType_Process = 7,
KernelDebugType_SuspendProcess = 8,
KernelDebugType_ResumeProcess = 9,
KernelDebugType_Port = 10,
};
enum KernelTraceState : u32 {