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Kernel: Make file description lookup return KResultOr

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Instead of checking it at every call site (to generate EBADF), we make
file_description(fd) return a KResultOr<NonnullRefPtr<FileDescription>>.

This allows us to wrap all the calls in TRY(). :^)

The only place that got a little bit messier from this is sys$mount(),
and there's a whole bunch of things there in need of cleanup.
This commit is contained in:
Andreas Kling
2021-09-05 18:34:28 +02:00
parent 2d2ea05c97
commit a9204510a4
24 changed files with 62 additions and 155 deletions
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4
Kernel/ProcessSpecificExposed.cpp
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@@ -79,9 +79,7 @@ KResultOr<NonnullRefPtr<Inode>> Process::lookup_stacks_directory(const ProcFS& p
KResultOr<size_t> Process::procfs_get_file_description_link(unsigned fd, KBufferBuilder& builder) const
{
auto file_description = m_fds.file_description(fd);
if (!file_description)
return EBADF;
auto file_description = TRY(m_fds.file_description(fd));
auto data = file_description->absolute_path();
builder.append(data);
return data.length();