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Everywhere: Convert ByteBuffer factory methods from Optional -> ErrorOr

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Apologies for the enormous commit, but I don't see a way to split this
up nicely. In the vast majority of cases it's a simple change. A few
extra places can use TRY instead of manual error checking though. :^)
This commit is contained in:
Sam Atkins 2022-01-20 17:47:39 +00:00 • committed by Andreas Kling
parent 140f1d9e55
commit 45cf40653a
79 changed files with 202 additions and 274 deletions
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7
Kernel/Storage/StorageDevice.cpp
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@ -62,10 +62,7 @@ ErrorOr<size_t> StorageDevice::read(OpenFileDescription&, u64 offset, UserOrKern
off_t pos = whole_blocks * block_size();
if (remaining > 0) {
auto data_result = ByteBuffer::create_uninitialized(block_size());
if (!data_result.has_value())
return ENOMEM;
auto data = data_result.release_value();
auto data = TRY(ByteBuffer::create_uninitialized(block_size()));
auto data_buffer = UserOrKernelBuffer::for_kernel_buffer(data.data());
auto read_request = TRY(try_make_request<AsyncBlockDeviceRequest>(AsyncBlockDeviceRequest::Read, index + whole_blocks, 1, data_buffer, block_size()));
auto result = read_request->wait();
@ -133,7 +130,7 @@ ErrorOr<size_t> StorageDevice::write(OpenFileDescription&, u64 offset, const Use
// then write the whole block back to the disk.
if (remaining > 0) {
// FIXME: Do something sensible with this OOM scenario.
auto data = ByteBuffer::create_zeroed(block_size()).release_value();
auto data = ByteBuffer::create_zeroed(block_size()).release_value_but_fixme_should_propagate_errors();
auto data_buffer = UserOrKernelBuffer::for_kernel_buffer(data.data());
{