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Kernel: Convert KBuffer::copy() => KBuffer::try_copy()

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This was a weird KBuffer API that assumed failure was impossible.
This patch converts it to a modern KResultOr<NonnullOwnPtr<KBuffer>> API
and updates the two clients to the new style.
This commit is contained in:
Andreas Kling 2021-09-07 15:36:39 +02:00
parent 250b52d6e5
commit b300f9aa2f
5 changed files with 49 additions and 28 deletions
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7
Kernel/KBuffer.h
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@ -122,9 +122,12 @@ public:
return adopt_nonnull_own_or_enomem(new (nothrow) KBuffer(impl.release_nonnull()));
}
[[nodiscard]] static KBuffer copy(const void* data, size_t size, Memory::Region::Access access = Memory::Region::Access::ReadWrite, StringView name = "KBuffer")
static KResultOr<NonnullOwnPtr<KBuffer>> try_copy(const void* data, size_t size, Memory::Region::Access access = Memory::Region::Access::ReadWrite, StringView name = "KBuffer")
{
return KBuffer(KBufferImpl::copy(data, size, access, name));
auto impl = KBufferImpl::copy(data, size, access, name);
if (!impl)
return ENOMEM;
return adopt_nonnull_own_or_enomem(new (nothrow) KBuffer(impl.release_nonnull()));
}
[[nodiscard]] bool is_null() const { return !m_impl; }