CODEWITHSUNDEEP
c++cwindowswinapi
irsis
irsis

Reputation: 1054

Windows API to fetch file attributes if path contains Symbolic link?

I used _stat64(const char *path, struct __stat64 *buffer); API to get the file/directory stats but this API fails if input path contains a symbolic link.

GetFileAttributes() and GetFileAttributesEx() APIs too fail if file path contains a symbolic link. But as mentioned at MSDN, If the path points to a symbolic link, these two functions returns attributes for the symbolic link. Even _stat64() works if path points to symbolic link.

Is there any way to get the states/attribues of file/directory if path contains [not points to] a symbolic link ?

For instance - how to get attributes of "test" directory if input path is "D:\temp\symbolic_link\test"

[Edit1] Since eryksun's comment made sense. I tried GetFileAttributesEx() and _stat64() again. It worked but this time I had granted the full permissions to target directory and symbolic link both. It appeared to be permission issue. If I pass "D:\temp\symbolic_link" then I get attributes/stats of symbolic link and if I pass "D:\temp\symbolic_link\test" then I get attributes/stats of test directory which is expected.

Upvotes: 5

Views: 3378

Answers (1)

Géza Török
Géza Török

Reputation: 1407

None of the MSDN pages say anything related to your issue, but you may want to obtain the real path of your file by doing something like this:

void realpath(const char *filename, wchar_t *pathbuf, int size)
{
    OFSTRUCT of;
    HANDLE file = (HANDLE)OpenFile(filename,&of,OF_READ);
    GetFinalPathNameByHandle(file,pathbuf,size,FILE_NAME_OPENED);
    CloseHandle(file);
}

This will fill pathbuf with the reparsed path name of your file (up to the length of size).

I hope this helps.

Upvotes: 5

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