Method create_directory_impl

kernel/kernel/FS/Ext2/Inode.cpp:550–582

	}

	BAN::ErrorOr<void> Ext2Inode::create_directory_impl(BAN::StringView name, mode_t mode, uid_t uid, gid_t gid)
	{
		ASSERT(this->mode().ifdir());
		ASSERT(Mode(mode).ifdir());

		RWLockWRGuard _(m_lock);

		if (!find_inode_no_lock(name).is_error())
			return BAN::Error::from_errno(EEXIST);

		const uint32_t new_ino = TRY(m_fs.create_inode(initialize_new_inode_info(mode, uid, gid)));

		auto inode_or_error = m_fs.open_inode(new_ino);
		if (inode_or_error.is_error())
		{
			TRY(m_fs.delete_inode(new_ino));
			return inode_or_error.release_error();
		}

		auto inode = inode_or_error.release_value();

		// link . and ..
		if (auto ret = inode->link_inode_to_directory_no_lock(*inode, "."_sv); ret.is_error())
			return ({ TRY(inode->cleanup_from_fs_no_lock()); ret.release_error(); });
		if (auto ret = inode->link_inode_to_directory_no_lock(*this, ".."_sv); ret.is_error())
			return ({ TRY(inode->cleanup_from_fs_no_lock()); ret.release_error(); });

		// link to parent
		if (auto ret = link_inode_to_directory_no_lock(*inode, name); ret.is_error())
			return ({ TRY(inode->cleanup_from_fs_no_lock()); ret.release_error(); });

		return {};
	}

	BAN::ErrorOr<void> Ext2Inode::link_inode_impl(BAN::StringView name, BAN::RefPtr<Inode> inode)
	{