This is a mail from Alexander. It seems his try didn't pass and he
asked me to forward.
Stipe
[EMAIL PROTECTED]
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Wapme Systems AG
Vogelsanger Weg 80
40470 Düsseldorf
Tel: +49-211-74845-0
Fax: +49-211-74845-299
E-Mail: [EMAIL PROTECTED]
Internet: http://www.wapme-systems.de
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Hi Stipe,
kannst du bitte die mail unten an die ML forwarden, da von mir scheint nicht
angekommen zu sein... Danke!
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Hi List,
just to keep you informed and to let you all to update your live Kannel's.
I have commited important bug fix for gw_gethostbyname function. Earlier we
have just copied a pointer to the new struct hostent , but unfortunately it's
not enough, because glibc use statically allocated buffers for pointers
stored within struct hostent. So we have a race condition, because next call
to gethostbyname function will overwrite this statically buffer and in worst
case we have SEGFAULT.
Here is the quote from `man gethostbyname`:
The functions gethostbyname() and gethostbyaddr() may return
pointers to static data, which may be overwritten by later calls.
Copying the struct hostent does not suffice, since it contains
pointers- a deep copy is required.
Commited version trying to use reentrant alternatives for gethostbyname,
unfortunately it's not a POSIX functions and every OS have a different call.
For now we have 3 types supported:
1) 6 params for call (Linux version)
2) 5 params for call (Solaris version)
3) no reentrant function at all , make a deep copy of hostent pointers.
gethostbyname_r with 3 params for call doesn't supported yet (deep copy
used), because I can't test it (implementation should be simple).
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Best regards / Mit besten Grüßen aus Düsseldorf
Dipl.-Ing.
Alexander Malysh
___________________________________________
Centrium GmbH
Vogelsanger Weg 80
40470 Düsseldorf
Fon: +49 (0211) 74 84 51 80
Fax: +49 (0211) 277 49 109
email: [EMAIL PROTECTED]
web: www.centrium.de
msn: [EMAIL PROTECTED]
icq: 98063111
___________________________________________
Please avoid sending me Word or PowerPoint attachments.
See http://www.fsf.org/philosophy/no-word-attachments.html
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