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kern: improve kdebug attach semantics

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Michael Scire 2021-09-17 18:10:05 -07:00 • committed by SciresM
parent 4c73c461f1
commit 2b91956051
8 changed files with 369 additions and 135 deletions
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34
libraries/libmesosphere/source/svc/kern_svc_process.cpp
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@ -36,27 +36,35 @@ namespace ams::kern::svc {
R_UNLESS(obj.IsNotNull(), svc::ResultInvalidHandle());
/* Get the process from the object. */
KProcess *process = nullptr;
if (KProcess *p = obj->DynamicCast<KProcess *>(); p != nullptr) {
if (KProcess *process = obj->DynamicCast<KProcess *>(); process != nullptr) {
/* The object is a process, so we can use it directly. */
process = p;
/* Make sure the target process exists. */
R_UNLESS(process != nullptr, svc::ResultInvalidHandle());
/* Get the process id. */
*out_process_id = process->GetId();
} else if (KThread *t = obj->DynamicCast<KThread *>(); t != nullptr) {
/* The object is a thread, so we want to use its parent. */
process = reinterpret_cast<KThread *>(obj.GetPointerUnsafe())->GetOwnerProcess();
KProcess *process = t->GetOwnerProcess();
/* Make sure the target process exists. */
R_UNLESS(process != nullptr, svc::ResultInvalidHandle());
/* Get the process id. */
*out_process_id = process->GetId();
} else if (KDebug *d = obj->DynamicCast<KDebug *>(); d != nullptr) {
/* The object is a debug, so we want to use the process it's attached to. */
obj = d->GetProcess();
if (obj.IsNotNull()) {
process = static_cast<KProcess *>(obj.GetPointerUnsafe());
}
/* Make sure the target process exists. */
R_UNLESS(d->IsAttached(), svc::ResultInvalidHandle());
R_UNLESS(d->OpenProcess(), svc::ResultInvalidHandle());
ON_SCOPE_EXIT { d->CloseProcess(); };
/* Get the process id. */
*out_process_id = d->GetProcessUnsafe()->GetProcessId();
}
/* Make sure the target process exists. */
R_UNLESS(process != nullptr, svc::ResultInvalidHandle());
/* Get the process id. */
*out_process_id = process->GetId();
return ResultSuccess();
}