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C++ DirectoryIterator::RemoveEntry方法代码示例

本文整理汇总了C++中DirectoryIterator::RemoveEntry方法的典型用法代码示例。如果您正苦于以下问题:C++ DirectoryIterator::RemoveEntry方法的具体用法?C++ DirectoryIterator::RemoveEntry怎么用?C++ DirectoryIterator::RemoveEntry使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在DirectoryIterator的用法示例。


在下文中一共展示了DirectoryIterator::RemoveEntry方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: transaction

static status_t
ext2_unlink(fs_volume* _volume, fs_vnode* _directory, const char* name)
{
	TRACE("ext2_unlink()\n");
	if (strcmp(name, ".") == 0 || strcmp(name, "..") == 0)
		return B_NOT_ALLOWED;

	Volume* volume = (Volume*)_volume->private_volume;
	Inode* directory = (Inode*)_directory->private_node;

	status_t status = directory->CheckPermissions(W_OK);
	if (status != B_OK)
		return status;

	TRACE("ext2_unlink(): Starting transaction\n");
	Transaction transaction(volume->GetJournal());

	directory->WriteLockInTransaction(transaction);

	TRACE("ext2_unlink(): Looking up for directory entry\n");
	HTree htree(volume, directory);
	DirectoryIterator* directoryIterator;

	status = htree.Lookup(name, &directoryIterator);
	if (status != B_OK)
		return status;

	ino_t id;
	status = directoryIterator->FindEntry(name, &id);
	if (status != B_OK)
		return status;

	Vnode vnode(volume, id);
	Inode* inode;
	status = vnode.Get(&inode);
	if (status != B_OK)
		return status;

	inode->WriteLockInTransaction(transaction);

	status = inode->Unlink(transaction);
	if (status != B_OK)
		return status;

	status = directoryIterator->RemoveEntry(transaction);
	if (status != B_OK)
		return status;

	entry_cache_remove(volume->ID(), directory->ID(), name);

	status = transaction.Done();
	if (status != B_OK)
		entry_cache_add(volume->ID(), directory->ID(), name, id);
	else
		notify_entry_removed(volume->ID(), directory->ID(), name, id);

	return status;
}
开发者ID:AmirAbrams,项目名称:haiku,代码行数:58,代码来源:kernel_interface.cpp


注:本文中的DirectoryIterator::RemoveEntry方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。