在 Windows/mingw 上，`fcntl(fd, F_GETFL) 的等价物是什么？O_ACCMODE`？
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On Windows/mingw, what is the equivalent of `fcntl(fd, F_GETFL) | O_ACCMODE`?
提问by Adrian
I am compiling a program on Windows with Mingw. How can I get the access mode for an open file descriptor?
我正在用 Mingw 在 Windows 上编译一个程序。如何获取打开的文件描述符的访问模式？
采纳答案by sqykly
According to Win32.hlp, the API supplies the function BOOL GetFileInformationByHandle(HANDLE hFile, LPBY_HANDLE_FILE_INFORMATION lpFileInformation)in KERNEL32. LPBY_HANDLE_FILE_INFORMATIONis a BY_HANDLE_FILE_INFORMATION*, where BY_HANDLE_FILE_INFORMATIONis as follows:
根据 Win32.hlp，API 提供BOOL GetFileInformationByHandle(HANDLE hFile, LPBY_HANDLE_FILE_INFORMATION lpFileInformation)KERNEL32 中的函数。 LPBY_HANDLE_FILE_INFORMATION是 a BY_HANDLE_FILE_INFORMATION*，其中BY_HANDLE_FILE_INFORMATION如下：
typedef struct _BY_HANDLE_FILE_INFORMATION { // bhfi
DWORD dwFileAttributes;
FILETIME ftCreationTime;
FILETIME ftLastAccessTime;
FILETIME ftLastWriteTime;
DWORD dwVolumeSerialNumber;
DWORD nFileSizeHigh;
DWORD nFileSizeLow;
DWORD nNumberOfLinks;
DWORD nFileIndexHigh;
DWORD nFileIndexLow;
} BY_HANDLE_FILE_INFORMATION;
After calling said function, if it returns true, the BY_HANDLE_FILE_INFORMATIONcontains data pertinent to your file. dwFileAttributesmay contain the FILE_ATTRIBUTE_READ_ONLYflag.
调用上述函数后，如果返回 true，则BY_HANDLE_FILE_INFORMATION包含与您的文件相关的数据。 dwFileAttributes可能包含FILE_ATTRIBUTE_READ_ONLY标志。
If you want more than that, there is also:
如果您想要更多，还有：
BOOL GetKernelObjectSecurity(
HANDLE Handle, // handle of object to query
SECURITY_INFORMATION RequestedInformation, // requested information
PSECURITY_DESCRIPTOR pSecurityDescriptor, // address of security descriptor
DWORD nLength, // size of buffer for security descriptor
LPDWORD lpnLengthNeeded // address of required size of buffer
);
The API reference is necessarily vague on what a SECURITY_DESCRIPTORis, but you can call a bunch of other functions using its address as a parameter to get specific properties. The SECURITY_INFORMATIONis just a DWORDconstant specifying which of these functions you plan to call. You can find more info at http://msdn.microsoft.com/en-us/library/aa446641%28VS.85%29.aspx
API 参考对于 aSECURITY_DESCRIPTOR是什么肯定含糊不清，但是您可以使用其地址作为参数调用一堆其他函数来获取特定属性。这SECURITY_INFORMATION只是一个DWORD常量，指定您计划调用这些函数中的哪一个。您可以在http://msdn.microsoft.com/en-us/library/aa446641%28VS.85%29.aspx 上找到更多信息
Edit - the second code section keeps coming out looking screwy, but the link to the API reference will lead you where you need to go if you dig around a bit.
编辑 - 第二个代码部分看起来很奇怪，但是如果您稍微深入研究，指向 API 参考的链接将引导您到达需要去的地方。
回答by Pibben
As far as I can tell, you cant.
据我所知，你不能。
https://web.archive.org/web/20161107234935/http://www.zemris.fer.hr/predmeti/os1/misc/Unix2Win.htmis a good guide for unix-to-windows porting.
https://web.archive.org/web/20161107234935/http://www.zemris.fer.hr/predmeti/os1/misc/Unix2Win.htm是 unix-to-windows 移植的好指南。
Maybe you could use the Cygwin POSIX "emulation"?
也许您可以使用 Cygwin POSIX“仿真”？
