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Kernel: Use KResultOr and TRY() for {Shared,Private}InodeVMObject

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This commit is contained in:
Andreas Kling 2021-09-06 12:58:03 +02:00
parent e3a716ceff
commit 6e3381ac32
8 changed files with 14 additions and 31 deletions
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7
Kernel/Syscalls/mmap.cpp
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@ -497,17 +497,14 @@ KResultOr<FlatPtr> Process::sys$mremap(Userspace<const Syscall::SC_mremap_params
auto old_offset = old_region->offset_in_vmobject();
NonnullRefPtr inode = static_cast<Memory::SharedInodeVMObject&>(old_region->vmobject()).inode();
auto new_vmobject = Memory::PrivateInodeVMObject::try_create_with_inode(inode);
if (!new_vmobject)
return ENOMEM;
auto new_vmobject = TRY(Memory::PrivateInodeVMObject::try_create_with_inode(inode));
auto old_name = old_region->take_name();
// Unmap without deallocating the VM range since we're going to reuse it.
old_region->unmap(Memory::Region::ShouldDeallocateVirtualRange::No);
address_space().deallocate_region(*old_region);
auto new_region = TRY(address_space().allocate_region_with_vmobject(range, new_vmobject.release_nonnull(), old_offset, old_name->view(), old_prot, false));
auto new_region = TRY(address_space().allocate_region_with_vmobject(range, move(new_vmobject), old_offset, old_name->view(), old_prot, false));
new_region->set_mmap(true);
return new_region->vaddr().get();
}