----- Original Message -----
From: "Dizzy" <[EMAIL PROTECTED]>
To: "Romanian Linux Users Group" <rlug@lists.lug.ro>
Sent: Thursday, July 12, 2007 6:22 PM
Subject: Re: [rlug] Sugestie alternativa MTA la qmail si sendmail ?
On Thursday 12 July 2007 18:10, Mihai Maties wrote:
> ce e ala djb-style? :D
Adica sa iei valori random bazandu-te pe PID-ul procesului curent... etc
Sau cum bine a zis-o chiar Linus Torvalds
(http://lkml.org/lkml/2004/6/6/9):
<--- cut here --->
qmail is a piece of crap. The source code is completely unreadable, and
it
seems to think that "getpid()" is a good source of random data. Don't ask
me why.
It literally does things like
random = now() + (getpid() << 16);
and since there isn't a single comment in the whole source tree, it's
pointless to wonder why. (In case you wonder, "now()" just does a
"time(NULL)" call - whee.).
I don't understand why people bother with it. It's not like Dan Bernstein
is so charming that it makes up for the deficiencies of his programs.
</--- cut here --->
Comentariul lui Linus e luat din context. Btw, nu e nimic gresit in a
folosi
getpid() pt random data. Depinde de nevoile de random. Daca ai nevoie de
random sa generezi chei de criptare pt nave spatiale probabil ca e cam
stupid
sa folosesti getpid() dar daca ai nevoie de o valoare relativ random
(poate
sa nu fie random) atunci e OK. Ba chiar e o metoda mai buna (ie mai
rapida)
decat chestii bazate /dev/(u)random.
Si sa nu-mi spui ca tu nu te-ai prins instant ce face "now()"...
Coding style-ul nu este unul foarte lizibil, pe de alta parte nici nu are
de
ce sa fie. Nu e open source software facut pt mentenanta si extindere, pt
a
atrage persoane interesate sa modifice. E facut doar ca sa-l inteleaga DJB
si
pt el banuiesc ca e OK asa cum e.
am un filing ca bernstein are codul lui comentat misto, iar pentru noi,
ceilalti, ni-l da intentionat fara comentarii. oricum, pana nu intri in cod
sa ii intelegi stilul, nu poti intelege frumusetea acestui cod. mie, mi-a
placut.
t.
--
Mihai RUSU Email: [EMAIL PROTECTED]
"Linux is obsolete" -- AST
_______________________________________________
RLUG mailing list
RLUG@lists.lug.ro
http://lists.lug.ro/mailman/listinfo/rlug
--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.5.476 / Virus Database: 269.10.4/897 - Release Date: 7/11/2007
9:57 PM
_______________________________________________
RLUG mailing list
RLUG@lists.lug.ro
http://lists.lug.ro/mailman/listinfo/rlug
