[pso] [tema5](windows) add firewall rule

[Laura Cristina]

:D
So:
1. Am folosit spinlock pentru modificarea listei de reguli si numarului de
reguli
2. Adaugare de reguli si incrementare numar reguli fac doar in functia
add_reg. Stergere de reguli si decrementare numar reguli fac in functiile
del_reg si destroy_list.
3. Lock si unlock pe acel spinlock fac doar in locurile mentionate la
punctul 2
4. Actiuni blocante? Cred ca nu
5.Codul:
        KeAcquireSpinLock(&lock,&irql);
        PushEntryList(&my_list,&ple->list);
        numar_reg++;
        KeReleaseSpinLock(&lock,irql);
6. Am facut initializarea spinlock-ului in DriverEntry:
KeInitializeSpinLock(&lock);

Bonus: dc scot incrementarea numarului de reguli din spinlock nu se mai
blocheaza acolo, dar se blocheaza la "no of rules"

2008/6/4 Razvan Deaconescu <razvan.deaconescu at cs.pub.ro>:

> On Wed, 2008-06-04 at 20:04 +0300, Laura Cristina wrote:
> > Mi-a mers si cu DbgPrint, doar sa se bloca intr-un spinlock cand
> > incrementam numarul de reguli si adaugam regula si cumva nu mai afisa
> > si mesajele.. de ce se moare in spinlock?
>
> Laura incearca sa pui niste intrebari mai clare. Ultimele posturi ale
> tale au fost la modul "de ce nu merge?". Nu suntem oracole. Ofera-ne
> niste detalii despre situatia in care nu-ti merge.
>
> De forma:
>
> ---
> * am folosit un spinlock pentru accesul la lista de reguli dinamice
> * adaugarea de elemente dinamice o fac doar in functia a si b
> * lock, respectiv unlock pe spinlock efectuez doar in functiile cutare
> * am urmarit codul si nu fac actiuni blocante (care oricum ar fi generat
> oops)
> * aici este linia de cod in care fac lock pe spinlock: ...
> * initializarea o fac in DriverEntry in modul urmatorul: ...
>
> Stie cineva care ar putea fi problema?
> ---
>
> Also, folositi bottom/interleaved posting. E greu sa urmarim firul unei
> discutii daca se foloseste top-posting[1][2]
>
> Ca sa nu ofer doar feedback negativ ;-), subiectul mesajului este
> excelent: [tema](OS) problema
>
> Multumesc,
> Razvan
>
> [1]
> A: Because we read from top to bottom, left to right.
> Q: Why should I start my reply below the quoted text?
>
> A: Because it messes up the order in which people normally read text.
> Q: Why is top-posting such a bad thing?
>
> A: The lost context.
> Q: What makes top-posted replies harder to read than bottom-posted?
>
> A: Yes.
> Q: Should I trim down the quoted part of an email to which I'm replying?
>
> [2] http://www.idallen.com/topposting.html
>
>
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-- 
Ruse Laura 344C3
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