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Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>

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We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace!
This was a slightly tedious refactoring that took a long time, so it's
not unlikely that some bugs crept in.

Nevertheless, it does pass basic functionality testing, and it's just
real nice to finally see the same pattern in all contexts. :^)
This commit is contained in:
Andreas Kling 2021-11-08 00:51:39 +01:00
parent 7ee10c6926
commit 79fa9765ca
262 changed files with 2415 additions and 2600 deletions
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12
Kernel/Thread.cpp
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@ -38,7 +38,7 @@ SpinlockProtected<Thread::GlobalList>& Thread::all_instances()
return *s_list;
}
KResultOr<NonnullRefPtr<Thread>> Thread::try_create(NonnullRefPtr<Process> process)
ErrorOr<NonnullRefPtr<Thread>> Thread::try_create(NonnullRefPtr<Process> process)
{
auto kernel_stack_region = TRY(MM.allocate_kernel_region(default_kernel_stack_size, {}, Memory::Region::Access::ReadWrite, AllocationStrategy::AllocateNow));
kernel_stack_region->set_stack(true);
@ -805,7 +805,7 @@ static void push_value_on_user_stack(FlatPtr& stack, FlatPtr data)
{
stack -= sizeof(FlatPtr);
auto result = copy_to_user((FlatPtr*)stack, &data);
VERIFY(result.is_success());
VERIFY(!result.is_error());
}
void Thread::resume_from_stopped()
@ -1027,7 +1027,7 @@ RegisterState& Thread::get_register_dump_from_stack()
return *trap->regs;
}
KResultOr<NonnullRefPtr<Thread>> Thread::try_clone(Process& process)
ErrorOr<NonnullRefPtr<Thread>> Thread::try_clone(Process& process)
{
auto clone = TRY(Thread::try_create(process));
auto signal_action_data_span = m_signal_action_data.span();
@ -1184,11 +1184,11 @@ size_t Thread::thread_specific_region_size() const
return align_up_to(process().m_master_tls_size, thread_specific_region_alignment()) + sizeof(ThreadSpecificData);
}
KResult Thread::make_thread_specific_region(Badge<Process>)
ErrorOr<void> Thread::make_thread_specific_region(Badge<Process>)
{
// The process may not require a TLS region, or allocate TLS later with sys$allocate_tls (which is what dynamically loaded programs do)
if (!process().m_master_tls_region)
return KSuccess;
return {};
auto range = TRY(process().address_space().try_allocate_range({}, thread_specific_region_size()));
auto* region = TRY(process().address_space().allocate_region(range, "Thread-specific", PROT_READ | PROT_WRITE));
@ -1204,7 +1204,7 @@ KResult Thread::make_thread_specific_region(Badge<Process>)
if (process().m_master_tls_size)
memcpy(thread_local_storage, process().m_master_tls_region.unsafe_ptr()->vaddr().as_ptr(), process().m_master_tls_size);
return KSuccess;
return {};
}
RefPtr<Thread> Thread::from_tid(ThreadID tid)