June 2003 - Darwin-kernel - lists.apple.com

Re: CVS Web on Apple's Darwin site?
by Stéphane Sudre 30 Jun '03

30 Jun '03

On vendredi, juin 27, 2003, at 20:17 Europe/Paris, Garth Cummings wrote: http://www.opensource.apple.com/darwinsource/ I thought there was only the latest version at this URL. I was wrong. Thanks for the hint. _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: kqueue and poll
by Felix Kronlage 28 Jun '03

28 Jun '03

On Sat, Jun 28, 2003 at 10:34:05AM -0700, Steve Dekorte wrote: > At WWDC I heard that kqueue and poll will be in Panther. Is this true? http://www.apple.com/server/macosx/pantherserver.html -fkr -- gpg-fingerprint: 076E 1E87 3E05 1C7F B1A0 8A48 0D31 9BD3 D9AC 74D0 |Felix Kronlage | whois -h whois.ripe.net FKR-RIPE | |http://www.hazardous.org/fkr/ | fkr(a){grummel.net|opendarwin.org} | [demime 0.98b removed an attachment of type application/pgp-signature] _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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kqueue and poll
by Steve Dekorte 28 Jun '03

28 Jun '03

At WWDC I heard that kqueue and poll will be in Panther. Is this true? Cheers, Steve "Statically typed languages are like American sports cars. They go fast, but only in a straight line" _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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RE: darwin-kernel digest, Vol 2 #317 - 5 msgs
by Herry Wiputra 28 Jun '03

28 Jun '03

Hi, I tried to use longjmp and setjmp function which is declared in ppc/setjmp.h, but when I tried to link my kext, I got undefined symbols for longjmp() and setjmp(). I can't find the definition of those functions anywhere in the source tree for 10.2.6 Has anyone see this problem before? Thanks, Herry _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: CVS Web on Apple's Darwin site?
by Garth Cummings 27 Jun '03

27 Jun '03

Hi Stiphane, On Friday, June 27, 2003, at 03:44 AM, Stiphane Sudre wrote: Is there still a CVS Web option on the Apple's Darwin site? I wanted to make a diff between 2 versions of uipc_socket.c in xnu/bsd/kern to see if something had changed between the Darwin version for Mac OS X 10.1 and the Darwin 6.x version but I can't find: - the old version on opendarwin - the CVS Web feature on Apple's Darwin site. You can mount the sources using WebDAV. From <http://developer.apple.com/darwin/projects/darwin/ >: "There are two ways to obtain Darwin software: Via the web Via a WebDAV volume For Mac OS X users: In the Finder select "Connect to Server" under the "Go" menu. Then enter the following in the "Address" field: http://www.opensource.apple.com/darwinsource/ The Darwin source will appear as a read-only volume on your desktop, which you can then browse just like any other volume." Once you have the volume mounted, you can run diff against its contents. HTH, --gc _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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problem with dlil_inject_pr_output
by Hale, Darrian J 27 Jun '03

27 Jun '03

I'm having a problem with the dlil_inject_pr_output function. At the base level, what I'm trying to do is intercept packets, copy them, and re-insert them via the dlil_inject_pr_input/output functions. In between the intercept and insert I will later add other features, but at this point I'm not changing the packet at all. When i intercept and re-inject incoming packets, I have no problems. However when i do the same process for outgoing packets, I have a couple of wierd problems: One is when I initiate a session from the OS X machine with my KEXT, an error occurs and the session terminates improperly. I watched the traffic using tcpdump and I get a SYN from the OS X machine, a SYN,ACK from the other machine, and the OS X machine responds to that with a RST. My other problem is when I initiate a session from a remote machine to the OS X machine with my KEXT, everything works until i terminate the session. With telnet, termination ends up in a loop where the OS X machine sends its final FIN, and the remote machine sends the ACK, then the OS X machine again sends that last FIN. The process that I use to re-inject packets is fairly straight forward. I copy the mbuf, sockaddr, frame type, and dest link address that are given to me via my filter_dl_output function. I use those copies and call the dlil_inject_pr_output function, then I return a -1 in the filter_dl_output function, so all the original data that I made copies of is freed. Both of these errors only occur when I intercept and re-inject packets on the output chain. I have verified that the problem is not in the input chain. The code for my filter_dl_output function is below: int slink_output(caddr_t cookie, struct mbuf **m, struct ifnet **ifp, struct sockaddr **dest, char *dest_linkaddr, char *frame_type) { char *ndla = NULL,*ipft = NULL; struct mbuf *mbf = NULL; struct sockaddr *nsa = NULL; if(*((uint16 *)frame_type) != IP_FRAME_TYPE) {// ignore non ip packets printf("slink_output: ignoring non-ip packet...\n"); return 0; } MALLOC(ndla,char *,MAC_ADDR_SIZE,M_CACHE,M_WAIT); if(ndla == NULL) { printf("slink_input: MALLOC, failure allocating space for dest_linkaddr...\n"); return SL_FAILURE; } bzero(ndla,MAC_ADDR_SIZE); bcopy(dest_linkaddr,ndla,MAC_ADDR_SIZE); MALLOC(ipft,char *,sizeof(uint16),M_CACHE,M_WAIT); if(ipft == NULL) { printf("slink_input: MALLOC, failure allocating space for frame_type...\n"); return SL_FAILURE; } bzero(ipft,sizeof(uint16)); bcopy(frame_type,ipft,sizeof(uint16)); MALLOC(nsa,struct sockaddr *,(*dest)->sa_len + 2,M_CACHE,M_WAIT); if(nsa == NULL) { printf("slink_input: MALLOC, failure allocating space for dest_sockaddr...\n"); return SL_FAILURE; } bzero(nsa,(*dest)->sa_len + 2); bcopy(*dest,nsa,(*dest)->sa_len + 2); mbf = m_copym(*m,0,M_COPYALL,M_WAIT); if((ret = dlil_inject_pr_output(mbf,nsa,FALSE,ipft,ndla,slink_hook_id)) != 0) printf("slink_output: dlil_inject_pr_output, failure, errno %d ...\n",ret); return -1; } _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: CVS Web on Apple's Darwin site?
by Stéphane Sudre 27 Jun '03

27 Jun '03

On vendredi, juin 27, 2003, at 14:00 Europe/Paris, Felix Kronlage wrote: On Fri, Jun 27, 2003 at 12:44:46PM +0200, Stiphane Sudre wrote: I wanted to make a diff between 2 versions of uipc_socket.c in xnu/bsd/kern to see if something had changed between the Darwin version for Mac OS X 10.1 and the Darwin 6.x version but I can't find: - the old version on opendarwin this should be the 10.1.5 source: http://www.opendarwin.org/cgi-bin/cvsweb.cgi/src/xnu/ ?only_with_tag=OD_APPLE_10_1_5 Thanks. Let's just hope that there was no major modification between 10.1.0 and 10.1.5. _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: CVS Web on Apple's Darwin site?
by Felix Kronlage 27 Jun '03

27 Jun '03

On Fri, Jun 27, 2003 at 12:44:46PM +0200, Stiphane Sudre wrote: > I wanted to make a diff between 2 versions of uipc_socket.c in > xnu/bsd/kern to see if something had changed between the Darwin version > for Mac OS X 10.1 and the Darwin 6.x version but I can't find: > - the old version on opendarwin this should be the 10.1.5 source: http://www.opendarwin.org/cgi-bin/cvsweb.cgi/src/xnu/?only_with_tag=OD_APPL… 10_1_5 -fkr -- gpg-fingerprint: 076E 1E87 3E05 1C7F B1A0 8A48 0D31 9BD3 D9AC 74D0 |Felix Kronlage | whois -h whois.ripe.net FKR-RIPE | |http://www.hazardous.org/fkr/ | fkr(a){grummel.net|opendarwin.org} | [demime 0.98b removed an attachment of type application/pgp-signature] _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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CVS Web on Apple's Darwin site?
by Stéphane Sudre 27 Jun '03

27 Jun '03

Is there still a CVS Web option on the Apple's Darwin site? I wanted to make a diff between 2 versions of uipc_socket.c in xnu/bsd/kern to see if something had changed between the Darwin version for Mac OS X 10.1 and the Darwin 6.x version but I can't find: - the old version on opendarwin - the CVS Web feature on Apple's Darwin site. _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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RE: panic in thread_invoke
by Herry Wiputra 23 Jun '03

23 Jun '03

Yes, you're right. I'm holding a simple lock within the wrapper for kernel_thread. Thanks for your help Jim and Brian. Regards, Herry > -----Original Message----- > From: Jim Magee [mailto:jmagee@apple.com] > Sent: Saturday, June 21, 2003 07:57 > To: Herry Wiputra > Cc: darwin-kernel(a)lists.apple.com > Subject: Re: panic in thread_invoke > > > > On Friday, June 20, 2003, at 12:04 AM, Herry Wiputra wrote: > > I am having a problem with my kext keep panicing in > thread_invoke(). > > > > The exact error message is > > panic: thread_invoke: preemption_level 1 > > You are either sleeping with preemption disabled explicitly, or > implicitly (by holding a real simple lock when you sleep). > > > In my code, I have a function which already hold a network funnel, > > then enter this while loop in which it will sleep until an event > > happen and spawn a new thread to handle some computation. > > > > The new thread will also try to grab the network_funnel and will > > release it when it returns. > > > > My kext kept panicing on the second loop, after it spawns > a new thread > > and sleep again waiting for an event to happen. > > > > Does anyone ever comes across this issue before?? > > I'd have to see the exact code to provide any more feedback > than above. > But look for a simple lock that you forget to unlock > before sleeping. > > --Jim _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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