False positive from access("/proc/registry/...", F_OK)
Christian Franke
Christian.Franke@t-online.de
Sat Apr 30 07:01:00 GMT 2011
Corinna Vinschen wrote:
> On Apr 27 12:26, Christian Franke wrote:
>
>> Problem was likely introduced by fhandler_registry.cc change 1.52:
>>
>> fhandler_registry::exists ()
>> ...
>> if (!val_only)
>> hKey = open_key (path, KEY_READ, wow64, false);
>> - if (hKey != (HKEY) INVALID_HANDLE_VALUE)
>> + if (hKey != (HKEY) INVALID_HANDLE_VALUE || get_errno () == EACCES)
>> file_type = 1;
>> else
>>
>> open_key() returns INVALID_HANDLE_VALUE and EACCESS also if an upper
>> level key cannot be opened. The exists() function returns 1
>> (virt_directory) then, it should return 0 (virt_none).
>>
> I don't remember anymore why I did that and naturally I also didn't
> write a comment.
>
:-)
I presume this fixed the access-denied-on-last-component case:
"/proc/registry/HKEY_LOCAL_MACHINE/SECURITY" -> filetype = 1 (OK)
but unfortunately then the same info is returned for all ".../SECURITY/*".
> But what you say sounds right to me. Please create a patch.
>
>
I'll try next week. A fix likely needs to enhance open_key() such that
it returns info whether the access was denied on last component or not.
Christian
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