在Windows网络上以接近MAX_PATH的长度访问文件 [英] Accessing files across the windows network with near MAX_PATH length

问题描述

我正在使用C ++并通过网络访问UNC路径.此路径略大于MAX_PATH.因此我无法获取文件句柄.

I'm using C++ and accessing a UNC path across the network. This path is slightly greater than MAX_PATH. So I cannot obtain a file handle.

但是，如果我在有问题的计算机上运行程序，则路径不大于MAX_PATH.这样我就可以获得文件句柄.如果我将文件重命名为更少的字符(减去计算机名称的长度)，则可以访问该文件.

But if I run the program on the computer in question, the path is not greater than MAX_PATH. So I can get a file handle. If I rename the file to have less characters (minus length of computer name) I can access the file.

即使知道UNC路径中的计算机名已超过MAX_PATH限制，也可以通过网络访问此文件吗?

Can this file be accessed across the network even know the computer name in the UNC path puts it over the MAX_PATH limit?

推荐答案

我记得有一些功能，例如在路径的开头使用\\?\来绕过MAX_PATH限制.这是MSDN上的参考:

I recall that there is some feature like using \\?\ at the start of the path to get around the MAX_PATH limit. Here is a reference on MSDN:

http://msdn.microsoft.com/en -us/library/aa365247(VS.85).aspx

对于远程计算机，您将使用路径名称，例如:\\?\unc\server\share\path\file. \\?\unc\是特殊前缀，不用作实际文件名的一部分.

For remote machines, you would use a path name such as: \\?\unc\server\share\path\file. The \\?\unc\ is the special prefix and is not used as part of the actual filename.

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