issue about PIDs ?
Hi,all!
I got some kill PID issue. I think the data struct "ClientSessionStruct" connecting pppoe-server process and pppd process. So , when the server get a PADT, it can kill the child pppd process by according to the ClientSessionStruct's member pid. my problem:
I modified the pppoe-server code ,and let pppoe-server spawn a pppd. then let the server send SIGTEM to pppd(using kill(pppd 2's pid , SIGTEM)) not using the normal way(such as stopsession as the code written). the pppoe-server and pppd die both, why?
2008-05-21
Quoted 4 lines · cyx_mail
I modified the pppoe-server code ,and let pppoe-server spawn a pppd. then let the server send SIGTEM to
pppd(using kill(pppd 2's pid , SIGTEM))not using the normal way(such as stopsession as the code written). the pppoe-server and pppd die both, why?
I guess you mean SIGTERM. This matches my observation with pptpconfig. Workaround is to define a handler or ignore the SIGTERM signal in your pppoe-server code.
NetworkManager-pptp also specifically handles SIGTERM and SIGINT, presumably for the same reason.
Signature · 3 lines
James Cameron http://quozl.netrek.org/ HP Open Source, Volunteer http://opensource.hp.com/ PPTP Client Project, Release Engineer http://pptpclient.sourceforge.net/
Quoted 2 lines
Workaround is to define a handler or ignore the SIGTERM signal in your pppoe-server code.
you mean define a handler in pppd code? what function should call in the handler to bring the pppd down gracefully?
2008-05-22
·¢¼şÈË£º James Cameron
·¢ËÍʱ¼ä£º 2008-05-22 07:11:51
ÊÕ¼şÈË£º cyx_mail
³ËÍ£º linux-ppp
Ö÷Ì⣺ Re: issue about PIDs ?
Quoted 4 lines · cyx_mail
I modified the pppoe-server code ,and let pppoe-server spawn a pppd. then let the server send SIGTEM to
pppd(using kill(pppd 2's pid , SIGTEM))not using the normal way(such as stopsession as the code written). the pppoe-server and pppd die both, why?
I guess you mean SIGTERM. This matches my observation with pptpconfig. Workaround is to define a handler or ignore the SIGTERM signal in your pppoe-server code.
NetworkManager-pptp also specifically handles SIGTERM and SIGINT, presumably for the same reason.
Signature · 10 lines
James Cameron http://quozl.netrek.org/ HP Open Source, Volunteer http://opensource.hp.com/ PPTP Client Project, Release Engineer http://pptpclient.sourceforge.net/ -- To unsubscribe from this list: send the line "unsubscribe linux-ppp" in the body of a message to [email protected] __________ NOD32 3090 (20080509) Information __________ This message was checked by NOD32 antivirus system. http://www.nod32cn.com ÿôèº{.nÇ+‰·Ÿ®‰†+%ŠËÿ±éݶ¥Šwÿº{.nÇ+‰·¥Š{±şšiş)í…æèw* jg¬±¨ ¶‰š�Šİ¢jÿ¾«şG«�éÿ¢¸ ¢·¦j:+v‰¨ŠwèjØm¶Ÿÿşø ¯ù ®w¥şŠàşf£¢·hš�â�úÿ†Ù¥
Quoted 1 line · cyx_mail
you mean define a handler in pppd code?
No, in your pppoe-server code. Handle the SIGINT as if it is expected side-effect.
Quoted 2 lines
what function should call in the handler to bring the pppd down gracefully?
Sorry, I don't understand this question.
Signature · 3 lines
James Cameron http://quozl.netrek.org/ HP Open Source, Volunteer http://opensource.hp.com/ PPTP Client Project, Release Engineer http://pptpclient.sourceforge.net/
Quoted 4 lines
you mean define a handler in pppd code?
No, in your pppoe-server code. Handle the SIGINT as if it is expected side-effect.
so if I define a handler in pppd ,and kill pppd himself in the handler ? can solve this problem?
Quoted 4 lines
what function should call in the handler to bring the pppd down gracefully?
Sorry, I don't understand this question.
if I want to kill pppd himself in the handler that user defined in pppd, what function should I call to kill pppd himself safely?
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cyx
2008-05-22
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·¢¼şÈË£ºJames Cameron
·¢ËÍÈÕÆÚ£º2008-05-22 09:26:52
ÊÕ¼şÈË£ºcyx_mail
³ËÍ£º[email protected]; James Cameron
Ö÷Ì⣺Re: Re: issue about PIDs ?
Quoted 1 line · cyx_mail
you mean define a handler in pppd code?
No, in your pppoe-server code. Handle the SIGINT as if it is expected side-effect.
Quoted 2 lines
what function should call in the handler to bring the pppd down gracefully?
Sorry, I don't understand this question.
Signature · 15 lines
James Cameron http://quozl.netrek.org/ HP Open Source, Volunteer http://opensource.hp.com/ PPTP Client Project, Release Engineer http://pptpclient.sourceforge.net/ -- To unsubscribe from this list: send the line "unsubscribe linux-ppp" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html __________ NOD32 3090 (20080509) Information __________ This message was checked by NOD32 antivirus system. http://www.nod32cn.com ÿôèº{.nÇ+‰·Ÿ®‰†+%ŠËÿ±éݶ¥Šwÿº{.nÇ+‰·¥Š{±şšiş)í…æèw* jg¬±¨ ¶‰š�Šİ¢jÿ¾«şG«�éÿ¢¸ ¢·¦j:+v‰¨ŠwèjØm¶Ÿÿşø ¯ù ®w¥şŠàşf£¢·hš�â�úÿ†Ù¥
Quoted 2 lines · cyx_mail
so if I define a handler in pppd ,and kill pppd himself in the handler?
No, I said define a handler for SIGINT in the other program in the process group that you don't want terminated. Perhaps you'd like to have another try at defining the problem?
Quoted 2 lines
if I want to kill pppd himself in the handler that user defined in pppd, what function should I call to kill pppd himself safely?
I wasn't suggesting adding a handler to pppd, so I don't need to answer this question.
Signature · 3 lines
James Cameron http://quozl.netrek.org/ HP Open Source, Volunteer http://opensource.hp.com/ PPTP Client Project, Release Engineer http://pptpclient.sourceforge.net/