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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
Download patch file Download diff file Expand all files Collapse all files

51
Kernel/Devices/KCOVDevice.cpp
View file

@ -65,7 +65,7 @@ void KCOVDevice::free_process()
delete kcov_instance;
}
KResultOr<NonnullRefPtr<OpenFileDescription>> KCOVDevice::open(int options)
ErrorOr<NonnullRefPtr<OpenFileDescription>> KCOVDevice::open(int options)
{
auto pid = Process::current().pid();
if (proc_instance->get(pid).has_value())
@ -77,9 +77,8 @@ KResultOr<NonnullRefPtr<OpenFileDescription>> KCOVDevice::open(int options)
return File::open(options);
}
KResult KCOVDevice::ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg)
ErrorOr<void> KCOVDevice::ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg)
{
KResult return_value = KSuccess;
auto thread = Thread::current();
auto tid = thread->tid();
auto pid = thread->pid();
@ -90,48 +89,34 @@ KResult KCOVDevice::ioctl(OpenFileDescription&, unsigned request, Userspace<void
SpinlockLocker locker(kcov_instance->spinlock());
switch (request) {
case KCOV_SETBUFSIZE: {
if (kcov_instance->state() >= KCOVInstance::TRACING) {
return_value = EBUSY;
break;
}
return_value = kcov_instance->buffer_allocate((FlatPtr)arg.unsafe_userspace_ptr());
break;
}
case KCOV_ENABLE: {
if (kcov_instance->state() >= KCOVInstance::TRACING) {
return_value = EBUSY;
break;
}
if (!kcov_instance->has_buffer()) {
return_value = ENOBUFS;
break;
}
case KCOV_SETBUFSIZE:
if (kcov_instance->state() >= KCOVInstance::TRACING)
return EBUSY;
return kcov_instance->buffer_allocate((FlatPtr)arg.unsafe_userspace_ptr());
case KCOV_ENABLE:
if (kcov_instance->state() >= KCOVInstance::TRACING)
return EBUSY;
if (!kcov_instance->has_buffer())
return ENOBUFS;
VERIFY(kcov_instance->state() == KCOVInstance::OPENED);
kcov_instance->set_state(KCOVInstance::TRACING);
thread_instance->set(tid, kcov_instance);
break;
}
return {};
case KCOV_DISABLE: {
auto maybe_kcov_instance = thread_instance->get(tid);
if (!maybe_kcov_instance.has_value()) {
return_value = ENOENT;
break;
}
if (!maybe_kcov_instance.has_value())
return ENOENT;
VERIFY(kcov_instance->state() == KCOVInstance::TRACING);
kcov_instance->set_state(KCOVInstance::OPENED);
thread_instance->remove(tid);
break;
return {};
}
default: {
return_value = EINVAL;
default:
return EINVAL;
}
};
return return_value;
}
KResultOr<Memory::Region*> KCOVDevice::mmap(Process& process, OpenFileDescription&, Memory::VirtualRange const& range, u64 offset, int prot, bool shared)
ErrorOr<Memory::Region*> KCOVDevice::mmap(Process& process, OpenFileDescription&, Memory::VirtualRange const& range, u64 offset, int prot, bool shared)
{
auto pid = process.pid();
auto maybe_kcov_instance = proc_instance->get(pid);