On Tue, Oct 30, 2012 at 11:53 AM, Christiano F. Haesbaert
<[email protected]> wrote:
> On 30 October 2012 16:52, Christiano F. Haesbaert
> <[email protected]> wrote:
>> On 30 October 2012 16:45, Okan Demirmen <[email protected]> wrote:
>>> On Tue, Oct 30, 2012 at 10:32 AM, Christiano F. Haesbaert
>>> <[email protected]> wrote:
>>>> On 30 October 2012 15:03, Christiano F. Haesbaert
>>>> <[email protected]> wrote:
>>>>> On 30 October 2012 15:00, Mike Belopuhov <[email protected]> wrote:
>>>>>> On Tue, Oct 30, 2012 at 2:58 PM, Christiano F. Haesbaert
>>>>>> <[email protected]> wrote:
>>>>>>> On 30 October 2012 14:36, rustyBSD <[email protected]> wrote:
>>>>>>>> MMmhh...
>>>>>>>>
>>>>>>>> == /usr/src/usr.bin/mg/dired.c ==
>>>>>>>> Go look the line 729:
>>>>>>>>
>>>>>>>>     if ((fopen(dname,"r")) == NULL) {
>>>>>>>>         ...
>>>>>>>>
>>>>>>>> Now you can cry
>>>>>>>>
>>>>>>>
>>>>>>> What is your point ?
>>>>>>>
>>>>>>
>>>>>> you leak a FILE object and a descriptor.
>>>>>
>>>>> Aww jesus, completely missed it !
>>>>
>>>> So that was just to check permission:
>>>>
>>>> ==
>>>> http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/mg/dired.c.diff?r1=1.45;r2=1.46
>>>>
>>>> From the Loganaden Velvindron:
>>>>  Make dired more sane (and emacslike):
>>>>  *  Position cursor at first filename after ..
>>>>  *  Don't reposition cursor on reopening
>>>>  *  Check for permission before attempting to open directory
>>>>
>>>> I took forever to get this in. Thanks, Logan for being patient!
>>>> ==
>>>>
>>>> That should be an access(2) call.
>>>>
>>>
>>> or stat(2) due to tctu.
>>
>> I believe in that case it would be the same, since there is still a
>> window between stat(2)/access(2) and open(2).
>
> I mean, considering he would open/stat/close and open again.

I didn't actually look at the code; I just noticed the words
permission and access(2) and hit reply :)

Cheers.

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