Alexey Borzenkov schrieb: > On 5/1/07, "Martin v. Löwis" <[EMAIL PROTECTED]> wrote: >> > After doing some research I found that it seems to be impossible to >> > use CreateFile for a file that doesn't have SHARE_READ. >> So what about GetFileAttributesEx? What are the conditions under which >> I can successfully invoke it? > > Seems to have the same problems as with CreateFile(...):
That code only tests it for pagefile.sys. My question was about open handles in general. Both Calvin Spealman and I found that you cannot reproduce the problem when you, in Python 2.5.0, open a file, and then try to os.stat() it - even though, in Python 2.5.0, os.stat() will perform GetFileAttributesEx. So even though we opened the file with not passing any sharing flags, we could still do GetFileAttributesEx on it. I now studied the CRT sources, and it seems that if you use a regular open() call, the CRT will pass FILE_SHARE_READ | FILE_SHARE_WRITE to CreateFile. You would have to use _sopen in the CRT to create any kind of sharing conflict, and that isn't exposed in Python. So I guess we need continue using pagefile.sys as a test case. Regards, Martin _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com