Windows API访问区分大小写的路径(Windows上的Ubuntu上的Bash) [英] Windows API to access case-sensitive paths (Bash-on-Ubuntu-on-Windows)

问题描述

Windows上的Bash-on-Ubuntu支持区分大小写的文件路径.这意味着我可以创建两个文件或目录，它们的名称仅大写不同.我在访问这些文件时遇到了问题.

Bash-on-Ubuntu-on-Windows supports case-sensitive file paths. This means that I can create two files or directories with names only differing in capitalization. I have issues accessing those files, though.

运行

bash -c "touch Magic ; mkdir magic ; echo Secret! > magic/secret"

在该目录中创建一个文件名Magic，一个名为magic的目录和一个文件名secret.

Creates a file names Magic, a directory named magic and a file names secret in that directory.

bash -c "ls -lR"产生

.:
total 0
drwxrwxrwx 2 root root 0 Aug 23 10:37 magic
-rwxrwxrwx 1 root root 0 Aug 23 10:37 Magic

./magic:
total 0
-rwxrwxrwx 1 root root 8 Aug 23 10:37 secret

(我不确定为什么会得到root，因为它不是默认用户，但这似乎与我的问题无关.)

(I am not sure why I get root, as it is not the default user, but that does not seem relevant to my question.)

Windows资源管理器显示:

Windows Explorer shows:

现在，虽然bash可以轻松访问目录中的magic/secret文件，但是Windows似乎将目录和文件视为一个相同的文件.所以双击目录我得到一个目录名无效"错误

Now, while bash can easily access the magic/secret file in the directory, Windows seems to treat both the directory and the file as one and the same. So double-clicking the directory I get a "directory name invalid" error

当我打印出The directory name is invalid.时，使用cd的情况也一样.

Same goes for using cd, as I get The directory name is invalid. printed out.

是否有任何API允许我访问那些区分大小写的路径或创建它们?似乎常规Windows API在访问现有文件时会完全忽略字符大小写.

Are there any APIs that allow me to access those case-sensitive paths, or create them? It seems that regular Windows APIs ignore character case completely when accessing existing files.

推荐答案

区分大小写的路径可以在带有NTFS的Windows上使用，但需要一些额外的工作.

Case-sensitive paths can be used on Windows with NTFS, but it requires a bit of extra work.

首先，必须在系统范围内启用区分大小写功能.这是通过将HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\kernel\ dword:ObCaseInsensitive注册表值设置为0，然后重新启动系统来完成的. 我发现这部分这里.

First, case-sensitivity must be enabled system-wide. This is done by setting the HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\kernel\ dword:ObCaseInsensitive registry value to 0, then restarting the system. I found this part here.

一旦启用了区分大小写功能，就可以对区分大小写的路径使用CreateFile.为此，必须将FILE_FLAG_POSIX_SEMANTICS作为dwFlagsAndAttributes参数的一部分传递.从 msdn :

Once case-sensitivity is enabled, it is possible to use CreateFile to with case-sensitive paths. To do that, you have to pass the FILE_FLAG_POSIX_SEMANTICS as part of the dwFlagsAndAttributes parameter. From msdn:

将根据POSIX规则进行访问.对于支持该命名的文件系统，这包括允许多个文件的名称(仅大小写不同).

Access will occur according to POSIX rules. This includes allowing multiple files with names, differing only in case, for file systems that support that naming.

我在这个答案中找到了这部分.

I found this part in this answer.

通过设置注册表设置和CreateFile标志，我可以访问区分大小写的路径.

By setting the registry setting and the CreateFile flag, I was able to access case-sensitive paths.

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