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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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4
Kernel/FileSystem/AnonymousFile.cpp
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@ -42,10 +42,10 @@ AnonymousFile::~AnonymousFile()
KResultOr<Region*> AnonymousFile::mmap(Process& process, FileDescription&, VirtualAddress preferred_vaddr, size_t offset, size_t size, int prot, bool shared)
{
if (offset != 0)
return KResult(-EINVAL);
return EINVAL;
if (size != m_vmobject->size())
return KResult(-EINVAL);
return EINVAL;
return process.allocate_region_with_vmobject(preferred_vaddr, size, m_vmobject, offset, {}, prot, shared);
}