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Kernel: Allow cloning of mmapped framebuffer regions

This commit is contained in:
Bananymous 2023-12-14 10:54:06 +02:00
parent 0f1c740fe8
commit 6cd5763361
1 changed files with 8 additions and 2 deletions
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10
kernel/kernel/Device/FramebufferDevice.cpp
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@ -233,8 +233,14 @@ namespace Kernel
virtual BAN::ErrorOr<BAN::UniqPtr<MemoryRegion>> clone(PageTable& new_page_table) override virtual BAN::ErrorOr<BAN::UniqPtr<MemoryRegion>> clone(PageTable& new_page_table) override
{ {
(void)new_page_table; auto* region_ptr = new FramebufferMemoryRegion(new_page_table, m_size, m_type, m_flags, m_framebuffer);
return BAN::Error::from_errno(ENOTSUP); if (region_ptr == nullptr)
return BAN::Error::from_errno(ENOMEM);
auto region = BAN::UniqPtr<FramebufferMemoryRegion>::adopt(region_ptr);
TRY(region->initialize({ m_vaddr, m_vaddr + BAN::Math::div_round_up(m_size, PAGE_SIZE) * PAGE_SIZE }));
return BAN::UniqPtr<MemoryRegion>(BAN::move(region));
} }
protected: protected: