[so] Tema5: Protectie ciudata

Sat, 12 Feb 2005 12:36:07 +0200

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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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<DIV><FONT face=3DArial size=3D2>Problema cam aiurea pe =
linux:</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Mapez o zona de memorie anonima cu mmap =
si=20
protectie NONE. Apoi setez un handler pe SIGSEGV cu =
sigaction.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Daca accesez zona de memorie imi intra =
in handler,=20
imi completeaza corect signum si info-&gt;si_signo, dar info-&gt;si_addr =
este pe=20
0, orice i-as face.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Chestia asta imi cam baga niste bete in =
roate...=20
Are cineva idee de la ce e?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Have FUN,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>FeeL E!</FONT></DIV></BODY></HTML>

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