March 2007 - Darwin-dev - lists.apple.com

Re: Library for OSBacktrace()?
by Rob McKeever 15 Mar '07

15 Mar '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com -Rob -- Rob McKeever, rmckeever(a)apple.com Developer Technical Support, CoreOS/Hardware Apple Computer -------------------------------- WWDC 2007 • June 11-15 • Moscone West • San Francisco, CA http://developer.apple.com/wwdc/ On Mar 15, 2007, at 2:08 PM, Jeffrey Johnson wrote: Hello, extern unsigned OSBacktrace(void **bt, unsigned maxAddrs) _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Unfortunately, OSBacktrace is part of the kernel. You can link against it if you are writing a kernel extension, but I don't think you are. For the curious, you can get the source for it from the xnu project in Darwin: xnu/libkern/gen/OSDebug.cpp. I did a quick scan and didn't see any obvious equivalent for userspace that is part of a standard framework. We have some debugging utility routines we're porting from linux that call backtrace(void **bt, int mx). We were encouraged when we found in /usr/include/libkern/OSDebug.h, but it comes up as an undefined symbol when we compile (we're using icc on this project, BTW). There's no man page, grepping the libraries in /usr/lib yielded no clues, and Googling brought up the darwin source, but no examples.... what library do we need to link against to use OSBacktrace()? Thanks Jeffrey Johnson Macintosh Development Wavefunction, Inc. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/rmckeever% 40apple.com This email sent to rmckeever(a)apple.com This email sent to site_archiver(a)lists.apple.com

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Re: Library for OSBacktrace()?
by Sean McBride 15 Mar '07

15 Mar '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Organization: Rogue Research On 3/15/07 5:08 PM, Jeffrey Johnson said: >Hello, > > We have some debugging utility routines we're porting from linux that >call backtrace(void **bt, int mx). We were encouraged when we found > >extern unsigned OSBacktrace(void **bt, unsigned maxAddrs) > > in /usr/include/libkern/OSDebug.h, but it comes up as an undefined >symbol when we compile (we're using icc on this project, BTW). > >There's no man page, grepping the libraries in /usr/lib yielded no >clues, and Googling brought up the darwin source, but no examples.... >what library do we need to link against to use OSBacktrace()? I don't know anything about OSBacktrace, but you may want to look at the MoreIsBetter sample code, specifically the MoreBacktrace.h file here: <http://developer.apple.com/samplecode/MoreIsBetter/listing46.html> Last I checked, it only supported PPC. Also, search the net/archives for "MoreBacktrace". -- ____________________________________________________________ Sean McBride, B. Eng sean(a)rogue-research.com Rogue Research www.rogue-research.com Mac Software Developer Montréal, Québec, Canada _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Library for OSBacktrace()?
by Jeffrey Johnson 15 Mar '07

15 Mar '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hello, We have some debugging utility routines we're porting from linux that call backtrace(void **bt, int mx). We were encouraged when we found extern unsigned OSBacktrace(void **bt, unsigned maxAddrs) in /usr/include/libkern/OSDebug.h, but it comes up as an undefined symbol when we compile (we're using icc on this project, BTW). There's no man page, grepping the libraries in /usr/lib yielded no clues, and Googling brought up the darwin source, but no examples.... what library do we need to link against to use OSBacktrace()? Thanks Jeffrey Johnson Macintosh Development Wavefunction, Inc. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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SO_NOADDRERR
by Paul Nelson 15 Mar '07

15 Mar '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Thread-index: AcdnFF4nnMl04NMHEdulGgAWy4i6sA== Thread-topic: SO_NOADDRERR User-agent: Microsoft-Entourage/11.3.3.061214 Can someone point me to documentation for this socket option? I've seen a note that says that sending on the socket will cause an error when the original source (local) address is no longer available. What about a recv or read call on the socket? Paul Nelson Thursby Software Systems, Inc. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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TCP/UDP sockets and hardware sleep
by Paul Nelson 14 Mar '07

14 Mar '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Thread-index: AcdmjaNU4ho1uNKAEduhfAAWy4i6sA== Thread-topic: TCP/UDP sockets and hardware sleep User-agent: Microsoft-Entourage/11.3.3.061214 I'm having trouble determining the best way to handle IP sockets when a Mac goes to sleep. Here is a very simple example: 0) Ethernet is connected to a wired network. Airport is turned on and has selected an access point. 1) connect a socket to a different computer - connection is made via built-in Ethernet 2) Notebook computer is put to sleep by closing the cover 3) Ethernet cable is removed 4) Computer wakes up (lid opened), joins a different wireless access point attached to a different network. 5) Software sends data on the connected socket. 6) Software performs a read on the socket Does a standard TCP/IP timeout cause the read call to fail? Is this guarranteed to happen? I'm observing that the read might not return. Paul Nelson Thursby Software Systems, Inc. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: aio.h
by lingwitt＠gmail.com 12 Mar '07

12 Mar '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:mime-version:in-reply-to:references:content-type:message-id:from:subject:date:to:x-mailer; b=gJnUmypSsQ63n4RDdMm0ltRRLM3js+0OIf177ndxwvHYiH+0xnwZlNWzzsL9+uhJTmWu/ODCQr6l0cjdKfej+zAFaTnDaMTeKQh+1kZ89qmF3ZOQ7PFiBJdKTSrsExDMH/b8M1OChUQ6/gmmgFhm7DUYR9ngPPAfV1yjAm/fRi8= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:mime-version:in-reply-to:references:content-type:message-id:from:subject:date:to:x-mailer; b=nCyBTeoUICRpOl5GLynh9P0S5u9T2BLjWYhWnc9VfuC87wo5yoAmV9QzrHzUQuorRDlp4PILAltY5KpHgJHsh20/ZJWRd/S7bItNAACojQGFCC/lZ0KsQt2s4f8FS+brOJI+uvA+cHw2UZrZT+8qEKeg5uXDqJ+JbvRiy/vSLNk= _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: aio.h
by Paul Ripke 12 Mar '07

12 Mar '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Mail-followup-to: "darwin-dev(a)lists.apple.com list" <darwin-dev(a)lists.apple.com> User-agent: Mutt/1.4.2.1i On Sat, Feb 24, 2007 at 09:30:38AM -0800, Justin C. Walker wrote: > > On Feb 23, 2007, at 23:56 , lingwitt(a)gmail.com wrote: > > >While building lighttpd 1.5.0, I kept getting complaints about /usr/ > >include/sys/aio.h > >After some investigation, I made sure > > > > /usr/include/sys/types.h > > > >was included before > > > > /usr/include/sys/aio.h > > > >and the problems went away. > > > > > >Considering aio.h uses the types > >defined in types.h, shouldn't the latter > >be included in the former? > > You could, as Conrad suggests, file a bug. This subject (whether to > include the includes that an include file needs in the include file > itself (:-})) is subject for much debate, and has been, over the > years. It's one where reasonable men can agree to participate in > long, pointless, flame-wars. I know, old email... anyway, just checked SUSv3, which says: "Inclusion of the <aio.h> header may make visible symbols defined in the headers <fcntl.h>, <signal.h>, <sys/types.h>, and <time.h>." I guess that might be one vote to include <sys/types.h> from <aio.h>. Except Darwin has <sys/aio.h>, not <aio.h>. Argh. -- Paul Ripke _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: Getting the IP addresses for my interfaces
by Justin C. Walker 11 Mar '07

11 Mar '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Mar 11, 2007, at 09:20 , Mark Gilbert wrote: Folks. Justin -- Justin C. Walker, Curmudgeon-At-Large Institute for the Enhancement of the Director's Income -------- Experience is what you get when you don't get what you want. -------- _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Sorry for what appears to be a really simple Question, but I can't find a simple answer I want to find out the IP address assigned to my en0 ethernet interface, programatically. Both Steve and Vincent provided good answers, but since you have a program that does what you want, why not check its source to see how it was done? If that doesn't help, 'netstat' and 'ifconfig' both do similar things. But wait! There's more: the 'what' command might help as well: $ what /usr/sbin/ipconfig /usr/sbin/ipconfig PROGRAM:ipconfig PROJECT:bootp-133 DEVELOPER:root BUILT:Wed Mar 23 23:45:02 PST 2005 $ what /usr/sbin/netstat /usr/sbin/netstat Copyright (c) 1983, 1988, 1993 PROGRAM:netstat PROJECT:network_cmds-245.15 DEVELOPER:root BUILT:Tue Aug 15 22:03:39 PDT 2006 $ what /sbin/ifconfig /sbin/ifconfig Copyright (c) 1983, 1993 PROGRAM:ifconfig PROJECT:network_cmds-245 DEVELOPER:root BUILT:Sun Mar 20 19:35:49 PST 2005 so you can track these to their lairs and lay them open to inspection :-}. Admittedly, this doesn't always provide the projects, but you can hope :-} This email sent to site_archiver(a)lists.apple.com

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Re: Getting the IP addresses for my interfaces
by Vincent Lubet 11 Mar '07

11 Mar '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Mar 11, 2007, at 9:20 AM, Mark Gilbert wrote: Folks. Use getifaddrs(3) Vincent _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Sorry for what appears to be a really simple Question, but I can't find a simple answer I want to find out the IP address assigned to my en0 ethernet interface, programatically. The equivalent to calling "ipconfig getifaddr en0" from the command line. I have toyed with interacting with the ipconfig tool, but I am sure there must be a much easier route somewhere in the sockets API. Any suggestions on the easiest route ? This email sent to site_archiver(a)lists.apple.com

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Re: Getting the IP addresses for my interfaces
by Steve Sisak 11 Mar '07

11 Mar '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Check the archives of macnetworkprog(a)lists.apple.com Comes up every couple months -- s/b sample code there as well. HTH, -Steve _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… At 4:20 PM +0000 3/11/07, Mark Gilbert wrote: I want to find out the IP address assigned to my en0 ethernet interface, programatically. This email sent to site_archiver(a)lists.apple.com

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