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Kernel+LibC: Turn errno codes into a strongly typed enum

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..and allow implicit creation of KResult and KResultOr from ErrnoCode.
This means that kernel functions that return those types can finally
do "return EINVAL;" and it will just work.

There's a handful of functions that still deal with signed integers
that should be converted to return KResults.
This commit is contained in:
Andreas Kling 2021-01-20 23:11:17 +01:00
parent e279b45aed
commit 19d3f8cab7
48 changed files with 591 additions and 506 deletions
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8
Kernel/Devices/SB16.cpp
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@ -236,11 +236,11 @@ KResultOr<size_t> SB16::write(FileDescription&, size_t, const UserOrKernelBuffer
if (!m_dma_region) {
auto page = MM.allocate_supervisor_physical_page();
if (!page)
return KResult(-ENOMEM);
return ENOMEM;
auto vmobject = AnonymousVMObject::create_with_physical_page(*page);
m_dma_region = MM.allocate_kernel_region_with_vmobject(*vmobject, PAGE_SIZE, "SB16 DMA buffer", Region::Access::Write);
if (!m_dma_region)
return KResult(-ENOMEM);
return ENOMEM;
}
#ifdef SB16_DEBUG
@ -249,7 +249,7 @@ KResultOr<size_t> SB16::write(FileDescription&, size_t, const UserOrKernelBuffer
ASSERT(length <= PAGE_SIZE);
const int BLOCK_SIZE = 32 * 1024;
if (length > BLOCK_SIZE) {
return KResult(-ENOSPC);
return ENOSPC;
}
u8 mode = (u8)SampleFormat::Signed | (u8)SampleFormat::Stereo;
@ -257,7 +257,7 @@ KResultOr<size_t> SB16::write(FileDescription&, size_t, const UserOrKernelBuffer
const int sample_rate = 44100;
set_sample_rate(sample_rate);
if (!data.read(m_dma_region->vaddr().as_ptr(), length))
return KResult(-EFAULT);
return EFAULT;
dma_start(length);
// 16-bit single-cycle output.