Blocking a folder with contents for all other apps

[firelex]

Hello, all!
The problem is in the subj:
I have a folder with some subfolders and many files.
I need to block this folder from reading/writing of any files by all other apps.
And at the start of my prog I need to know if any of the files is already opened by another app.

 

[firelex]

Hey, guys! No ideas???

 

[mingis]

If your filesystem is NTFS, you can restrict access to certain files for certain users.

What about aplications... - may be open all the files using CreateFile() with no sharing - dwShareMode=0 or simply fopen() . You should get negative responce in case if the file is allready open.

 

[firelex]

I've thoght about opening all the files and hold them for the whole time of my prog working. But it isn't so comfortable. I don't know how many of those files I'll find.

And the second: I've tried the following:
I've opened a file with the windows editor and then started this code

        CFile file;
        if (!file.Open(path, CFile::modeWrite)) {
            error = TRUE;
        } else {
            file.Write("123", 3); 
        }
        file.Close();

it all worked fine!!!!!!! Editor didn't show anything, but after I re-opened the file it had at the beginning "123"!!!!

 

[mingis]

> Editor didn't show anything, but after I re-opened the file it had at the beginning "123"

You are right, it seems, that, for example, notepad closes input file after reading it to the buffer. But if the file is meanwhile opened by another application, it could not be saved from notepad, until that application closes it.

 

[firelex]

In any way I need to block all the files in the directory from writing, or at least to check, if any of them are opened by another app.