[so] Tema5: Protectie ciudata

[zvirid traian]

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int dif = (int)(info->si_addr - (void*)adr_v);

da un printf inainte si dupa ca sa fi sigur ca esti in handler

unde adr_v e adresa intoarsa de mmap.

Claudiu-Florin FILIMON <fili@mymail.ro> wrote:
Problema cam aiurea pe linux:
Mapez o zona de memorie anonima cu mmap si protectie NONE. Apoi setez un handler pe SIGSEGV cu sigaction.
Daca accesez zona de memorie imi intra in handler, imi completeaza corect signum si info->si_signo, dar info->si_addr este pe 0, orice i-as face.
Chestia asta imi cam baga niste bete in roate... Are cineva idee de la ce e?
 
Have FUN,
FeeL E!


		
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<P>&nbsp;</P>
<P>int dif = (int)(info-&gt;si_addr - (void*)adr_v);</P>
<P>da un printf inainte si dupa ca sa fi sigur ca esti in handler</P>
<P>unde adr_v e adresa intoarsa de mmap.</FONT><BR><BR><B><I>Claudiu-Florin FILIMON &lt;fili@mymail.ro&gt;</I></B> wrote:</P>
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<DIV><FONT face=Arial size=2>Problema cam aiurea pe linux:</FONT></DIV>
<DIV><FONT face=Arial size=2>Mapez o zona de memorie anonima cu mmap si protectie NONE. Apoi setez un handler pe SIGSEGV cu sigaction.</FONT></DIV>
<DIV><FONT face=Arial size=2>Daca accesez zona de memorie imi intra in handler, imi completeaza corect signum si info-&gt;si_signo, dar info-&gt;si_addr este pe 0, orice i-as face.</FONT></DIV>
<DIV><FONT face=Arial size=2>Chestia asta imi cam baga niste bete in roate... Are cineva idee de la ce e?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>Have FUN,</FONT></DIV>
<DIV><FONT face=Arial size=2>FeeL E!</FONT></DIV></BLOCKQUOTE></DIV><p>
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