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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

8
Kernel/Firmware/ACPI/Parser.cpp
View file

@ -39,19 +39,19 @@ UNMAP_AFTER_INIT NonnullRefPtr<ACPISysFSComponent> ACPISysFSComponent::create(St
return adopt_ref(*new (nothrow) ACPISysFSComponent(name, paddr, table_size));
}
KResultOr<size_t> ACPISysFSComponent::read_bytes(off_t offset, size_t count, UserOrKernelBuffer& buffer, OpenFileDescription*) const
ErrorOr<size_t> ACPISysFSComponent::read_bytes(off_t offset, size_t count, UserOrKernelBuffer& buffer, OpenFileDescription*) const
{
auto blob = TRY(try_to_generate_buffer());
if ((size_t)offset >= blob->size())
return KSuccess;
return 0;
ssize_t nread = min(static_cast<off_t>(blob->size() - offset), static_cast<off_t>(count));
TRY(buffer.write(blob->data() + offset, nread));
return nread;
}
KResultOr<NonnullOwnPtr<KBuffer>> ACPISysFSComponent::try_to_generate_buffer() const
ErrorOr<NonnullOwnPtr<KBuffer>> ACPISysFSComponent::try_to_generate_buffer() const
{
auto acpi_blob = Memory::map_typed<u8>((m_paddr), m_length);
return KBuffer::try_create_with_bytes(Span<u8> { acpi_blob.ptr(), m_length });
@ -64,7 +64,7 @@ UNMAP_AFTER_INIT ACPISysFSComponent::ACPISysFSComponent(String name, PhysicalAdd
{
}
UNMAP_AFTER_INIT KResultOr<NonnullRefPtr<ACPISysFSDirectory>> ACPISysFSDirectory::try_create(FirmwareSysFSDirectory& firmware_directory)
UNMAP_AFTER_INIT ErrorOr<NonnullRefPtr<ACPISysFSDirectory>> ACPISysFSDirectory::try_create(FirmwareSysFSDirectory& firmware_directory)
{
auto acpi_directory = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) ACPISysFSDirectory(firmware_directory)));
return acpi_directory;

6
Kernel/Firmware/ACPI/Parser.h
View file

@ -22,7 +22,7 @@ namespace Kernel::ACPI {
class ACPISysFSDirectory : public SysFSDirectory {
public:
static KResultOr<NonnullRefPtr<ACPISysFSDirectory>> try_create(FirmwareSysFSDirectory& firmware_directory);
static ErrorOr<NonnullRefPtr<ACPISysFSDirectory>> try_create(FirmwareSysFSDirectory& firmware_directory);
private:
explicit ACPISysFSDirectory(FirmwareSysFSDirectory& firmware_directory);
@ -32,10 +32,10 @@ class ACPISysFSComponent : public SysFSComponent {
public:
static NonnullRefPtr<ACPISysFSComponent> create(String name, PhysicalAddress, size_t table_size);
virtual KResultOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const override;
virtual ErrorOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const override;
protected:
KResultOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const;
ErrorOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const;
ACPISysFSComponent(String name, PhysicalAddress, size_t table_size);
PhysicalAddress m_paddr;

10
Kernel/Firmware/BIOS.cpp
View file

@ -29,12 +29,12 @@ UNMAP_AFTER_INIT BIOSSysFSComponent::BIOSSysFSComponent(StringView name)
{
}
KResultOr<size_t> BIOSSysFSComponent::read_bytes(off_t offset, size_t count, UserOrKernelBuffer& buffer, OpenFileDescription*) const
ErrorOr<size_t> BIOSSysFSComponent::read_bytes(off_t offset, size_t count, UserOrKernelBuffer& buffer, OpenFileDescription*) const
{
auto blob = TRY(try_to_generate_buffer());
if ((size_t)offset >= blob->size())
return KSuccess;
return 0;
ssize_t nread = min(static_cast<off_t>(blob->size() - offset), static_cast<off_t>(count));
TRY(buffer.write(blob->data() + offset, nread));
@ -48,7 +48,7 @@ UNMAP_AFTER_INIT DMIEntryPointExposedBlob::DMIEntryPointExposedBlob(PhysicalAddr
{
}
KResultOr<NonnullOwnPtr<KBuffer>> DMIEntryPointExposedBlob::try_to_generate_buffer() const
ErrorOr<NonnullOwnPtr<KBuffer>> DMIEntryPointExposedBlob::try_to_generate_buffer() const
{
auto dmi_blob = Memory::map_typed<u8>((m_dmi_entry_point), m_dmi_entry_point_length);
return KBuffer::try_create_with_bytes(Span<u8> { dmi_blob.ptr(), m_dmi_entry_point_length });
@ -66,7 +66,7 @@ UNMAP_AFTER_INIT SMBIOSExposedTable::SMBIOSExposedTable(PhysicalAddress smbios_s
{
}
KResultOr<NonnullOwnPtr<KBuffer>> SMBIOSExposedTable::try_to_generate_buffer() const
ErrorOr<NonnullOwnPtr<KBuffer>> SMBIOSExposedTable::try_to_generate_buffer() const
{
auto dmi_blob = Memory::map_typed<u8>((m_smbios_structure_table), m_smbios_structure_table_length);
return KBuffer::try_create_with_bytes(Span<u8> { dmi_blob.ptr(), m_smbios_structure_table_length });
@ -90,7 +90,7 @@ UNMAP_AFTER_INIT void BIOSSysFSDirectory::set_dmi_32_bit_entry_initialization_va
m_smbios_structure_table_length = smbios_entry.ptr()->legacy_structure.smboios_table_length;
}
UNMAP_AFTER_INIT KResultOr<NonnullRefPtr<BIOSSysFSDirectory>> BIOSSysFSDirectory::try_create(FirmwareSysFSDirectory& firmware_directory)
UNMAP_AFTER_INIT ErrorOr<NonnullRefPtr<BIOSSysFSDirectory>> BIOSSysFSDirectory::try_create(FirmwareSysFSDirectory& firmware_directory)
{
auto bios_directory = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) BIOSSysFSDirectory(firmware_directory)));
bios_directory->create_components();

10
Kernel/Firmware/BIOS.h
View file

@ -62,10 +62,10 @@ Memory::MappedROM map_ebda();
class BIOSSysFSComponent : public SysFSComponent {
public:
virtual KResultOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const override;
virtual ErrorOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const override;
protected:
virtual KResultOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const = 0;
virtual ErrorOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const = 0;
explicit BIOSSysFSComponent(StringView name);
};
@ -75,7 +75,7 @@ public:
private:
DMIEntryPointExposedBlob(PhysicalAddress dmi_entry_point, size_t blob_size);
virtual KResultOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const override;
virtual ErrorOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const override;
PhysicalAddress m_dmi_entry_point;
size_t m_dmi_entry_point_length;
};
@ -86,7 +86,7 @@ public:
private:
SMBIOSExposedTable(PhysicalAddress dmi_entry_point, size_t blob_size);
virtual KResultOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const override;
virtual ErrorOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const override;
PhysicalAddress m_smbios_structure_table;
size_t m_smbios_structure_table_length;
@ -94,7 +94,7 @@ private:
class BIOSSysFSDirectory : public SysFSDirectory {
public:
static KResultOr<NonnullRefPtr<BIOSSysFSDirectory>> try_create(FirmwareSysFSDirectory&);
static ErrorOr<NonnullRefPtr<BIOSSysFSDirectory>> try_create(FirmwareSysFSDirectory&);
void create_components();

6
Kernel/Firmware/PowerStateSwitch.cpp
View file

@ -30,16 +30,16 @@ UNMAP_AFTER_INIT PowerStateSwitchNode::PowerStateSwitchNode(FirmwareSysFSDirecto
{
}
KResult PowerStateSwitchNode::truncate(u64 size)
ErrorOr<void> PowerStateSwitchNode::truncate(u64 size)
{
// Note: This node doesn't store any useful data anyway, so we can safely
// truncate this to zero (essentially ignoring the request without failing).
if (size != 0)
return EPERM;
return KSuccess;
return {};
}
KResultOr<size_t> PowerStateSwitchNode::write_bytes(off_t offset, size_t count, UserOrKernelBuffer const& data, OpenFileDescription*)
ErrorOr<size_t> PowerStateSwitchNode::write_bytes(off_t offset, size_t count, UserOrKernelBuffer const& data, OpenFileDescription*)
{
if (Checked<off_t>::addition_would_overflow(offset, count))
return EOVERFLOW;

6
Kernel/Firmware/PowerStateSwitch.h
View file

@ -24,9 +24,9 @@ class PowerStateSwitchNode final : public SysFSComponent {
public:
static NonnullRefPtr<PowerStateSwitchNode> must_create(FirmwareSysFSDirectory&);
virtual mode_t permissions() const override;
virtual KResultOr<size_t> write_bytes(off_t, size_t, UserOrKernelBuffer const&, OpenFileDescription*) override;
virtual KResult truncate(u64) override;
virtual KResult set_mtime(time_t) { return KSuccess; }
virtual ErrorOr<size_t> write_bytes(off_t, size_t, UserOrKernelBuffer const&, OpenFileDescription*) override;
virtual ErrorOr<void> truncate(u64) override;
virtual ErrorOr<void> set_mtime(time_t) { return {}; }
private:
PowerStateSwitchNode(FirmwareSysFSDirectory&);