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Kernel: Implement MAP_PRIVATE file mappings

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mmap() now supports mapping files with MAP_PRIVATE.
This commit is contained in:
Bananymous
2023-09-29 17:23:42 +03:00
parent 4ee759aa3b
commit 7b1c573ad0
8 changed files with 202 additions and 15 deletions
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5
kernel/kernel/Memory/MemoryBackedRegion.cpp
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@@ -1,13 +1,14 @@
#include <kernel/LockGuard.h>
#include <kernel/Memory/Heap.h>
#include <kernel/Memory/MemoryBackedRegion.h>
#include <kernel/LockGuard.h>
namespace Kernel
{
BAN::ErrorOr<BAN::UniqPtr<MemoryBackedRegion>> MemoryBackedRegion::create(PageTable& page_table, size_t size, AddressRange address_range, Type type, PageTable::flags_t flags)
{
ASSERT(type == Type::PRIVATE);
if (type != Type::PRIVATE)
return BAN::Error::from_errno(ENOTSUP);
auto* region_ptr = new MemoryBackedRegion(page_table, size, type, flags);
if (region_ptr == nullptr)