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

Something in my code causes Intel wireless association to die.
by Terry Simons 27 Mar '07

27 Mar '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com I'm not sure what's causing this... but it definitely looks like a bug. Has anyone seen this before? Any lurkers privy to the inner workings of the Atheros Airport driver? - Terry _______________________________________________ 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… My application, which appears to work fine on PowerPC Macs, causes the wireless card on Intel macs (MacBook Pro for sure) to lose association. I'm using BPF and calling network IOCTLs... so I'm pretty sure it's something in there, but I haven't been able to locate the exact issue yet. This email sent to site_archiver(a)lists.apple.com

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Help on attching multiple physical network interfaces to a single virtual network interface
by Anees Alappat 27 Mar '07

27 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:message-id:date:from:to:subject:mime-version:content-type; b=p08DZvitt0PRU1d/sOTAveebB41TVRKzAFMvKVI9GKpAQm4LQGKi5d5mEzlrlMetn1WBT5gSRCVcq+XJVgAhmXG+btpvYxCMIpPPWMd6QVhiGGUlSR+TGxOV5530i79hW88eaKv7si1/y9mR4pHhJHZfm3xQhoXVcs0el9ZGQus= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:mime-version:content-type; b=MHx/S7Alz7UsDdP8hSS7oRCCv9W3s3OmB0DF+gScNI7NfqAAhHJQlPrgYPM8PY5nhQ+cPUWJ/Z+3vCdtH/it0AzrKyIFjPTnpG9limZTHMqLwmIltS4f3tygxqS8p71/bPoNewFNE1ENQUJcoi4MqNPqSkvLt2WmCbNrN95PRMs= _______________________________________________ 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: utility / source to unpack MS .cab files on OSX / Darwin?
by stephen joseph butler 27 Mar '07

27 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:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=FG1HmVJsQlDJfMOTcfFlflGkmKsN7TMf7l+yCPQGc7cjWnT1IcZkbBN85jzDc8khj0dG+JN6FG/zg7T/8uX/vD01NTZsWEbXUMagMEiap7LUyVR8BH9Fi/VI4K0yF+0ffqp0/UxPdqp/5rHYAuGklicAAw17f/O9JsHumiJ1sWA= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=iyN3WX46PO3hcDhxrO7vF4T74Ym7Oa++ltY4xr3YCW6Z+ucjSIYw6rsxIHWjpIhDHKAWnCjvIV4u4NCp2tvHYZ9WJ1a4PsHSZjP9Dhf6iJwsEvB8iGxoDBfTnsh0K2wSKk9c5D4UH27ja/7YffWjzGJUE9EDtr8id3cAQo3U5UU= I'm involved in porting a utility that unpacks a vendor-specific file from Win32 to Mac OSX. Aside from providing POSIX implementations of all of the Win32 calls it makes (file system mostly) as well as accounting for differences in C++ under VS.NET 2005 and C++ under gcc 4, this utility also has to unpack Microsoft .cab files, which are present in the vendor-specific file. Does anyone know of a utility or piece of source that can unpack a MS .cab file under OSX / *nix? http://www.kyz.uklinux.net/cabextract.php There's a Fink package for it: http://pdb.finkproject.org/pdb/package.php/cabextract _______________________________________________ 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… On 3/27/07, jmzorko(a)mac.com <jmzorko(a)mac.com> wrote: This email sent to site_archiver(a)lists.apple.com

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utility / source to unpack MS .cab files on OSX / Darwin?
by jmzorko＠mac.com 27 Mar '07

27 Mar '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hello, all ... Regards, John Falling You - exploring the beauty of voice and sound http://www.fallingyou.com _______________________________________________ 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… I'm involved in porting a utility that unpacks a vendor-specific file from Win32 to Mac OSX. Aside from providing POSIX implementations of all of the Win32 calls it makes (file system mostly) as well as accounting for differences in C++ under VS.NET 2005 and C++ under gcc 4, this utility also has to unpack Microsoft .cab files, which are present in the vendor-specific file. Does anyone know of a utility or piece of source that can unpack a MS .cab file under OSX / *nix? This email sent to site_archiver(a)lists.apple.com

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Followup to execv failure with multi-user application
by Darren Mason 26 Mar '07

26 Mar '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Thunderbird 1.5.0.10 (Windows/20070221) Darren Mason _______________________________________________ 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… I have solved the problem I detailed in my previous post. By signaling the other instances of the application to shut down all their threads, I was able to run execv successfully. I don't know why another instance's threads should cause a problem, but at least this solved it. This email sent to site_archiver(a)lists.apple.com

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IODisplayGetFloatParameter returns kIOReturnUnsupported
by Bernard Meers 26 Mar '07

26 Mar '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com _______________________________________________ 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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Execv failure with multi-user application
by Darren Mason 25 Mar '07

25 Mar '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Thunderbird 1.5.0.10 (Windows/20070221) Thanks in advance, Darren Mason _______________________________________________ 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 might have been answered somewhere else, but I couldn't find anything that detailed my exact problem. I'm working on an application that each user runs their own instance of as an agent, but they coordinate when updating using named semaphores. At first I had a problem using exevc to launch the updater application, getting ENOTSUP back before I found out that it just meant that there was a thread still running. This was easy enough to solve, but now I've come across the same issue if *another* user is running an instance of the application. Is this supposed to happen, and if so under what conditions? Could this be caused by the named semaphore handles? I'm calling sem_close on them but not sem_unlink because that would break the coordination mechanism. This email sent to site_archiver(a)lists.apple.com

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Re: retrieving results of system() call from stdout?
by Michael Smith 23 Mar '07

23 Mar '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Mar 23, 2007, at 12:03 PM, darwin-dev-request(a)lists.apple.com wrote: i'm writing a C++ GUI app that makes use of the command line to do somthing. say i've got a command line utility "foo" that takes a whatever and ouputs a modifided whatever, but while it's processing it gives feedback like: foo working: 20% foo working: 37% foo working: 49% foo working: 63% foo working: 75% You would typically do something like this: int sout_pipe[2]; int serr_pipe[2]; int child_pid; /* create pipes and mark them non-close-on-exec */ pipe(sout_pipe); fcntl(sout_pipe[1], F_SETFD, fcntl(sout_pipe[1], F_GETFD) & ~1); pipe(serr_pipe); fcntl(serr_pipe[1], F_SETFD, fcntl(serr_pipe[1], F_GETFD) & ~1); /* go our separate ways */ child_pid = fork(); /* in the child process, re-arrange stdout/err and run the tool */ if (child_pid == 0) { close(0); close(1); dup2(sout_pipe[1], 1); close(2); dup2(serr_pipe[2], 2); execl(absolute_path_to_tool, arguments...) } = Mike _______________________________________________ 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… etc etc. how can i: 1) make system() return immediately (it t as simple as putting a "&" at the end of the string?) 2) *read* from stdout or get notified when a new string is pushed to it? 3) *read* from stderr to see if something bad happened? Canonically, the best way to do this is to fork a child process with descriptors set appropriately. The use of system/popen is generally discouraged. Once you've fired off the tool, you can use select/poll on the descriptors sout_pipe[0] (for the tool's standard out) and serr_pipe [0] (for the tool's error output). Inside the tool, if you are using standard I/O you would typically want to either set line buffering (assuming you want to use line delimiters to separate messages), or explicitly flush in order to avoid synchronisation issues. Obviously you can use the same trick to pass commands to the tool on standard in. It's also important to reap the tool with one of the wait(2) family of calls. See the documentation for fork(2), pipe(2), exec(3) and dup2(2) for more information. I also strongly encourage you to pick up a copy of W. Richard Stevens' "Advanced Programming in the Unix Environment". This email sent to site_archiver(a)lists.apple.com

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Re: Gah! Any real world Open Directory examples?
by David Nedrow 23 Mar '07

23 Mar '07

site_archiver(a)lists.apple.com Delivered-To: Darwin-dev(a)lists.apple.com On Mar 23, 2007, at 12:18, Jason Townsend wrote: If all you need is the shell, you could consider using getpwnam(). char *shell; struct passwd * userRec; userRec = getpwnam(username); shell = strdup(userRec.pw_shell); That's not a bad idea. Thanks. -David _______________________________________________ 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: Gah! Any real world Open Directory examples?
by Jason Townsend 23 Mar '07

23 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:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=CIyb5Ytsfhm4Tg7P0nCuCQeeQMKBqFVyJpA6gDPx8oo+KRHifOxDU1cYEpExpr55P2ilbofBdj8gPYIE8arNiFN0eSbExW/BZBrIsYakyikeIvrvpPpxFlUWN1/bbhlnyGgTen3zX89xNViR0fUXZsTg/Pa6nD6LDsMKVS4CXbI= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=kvYCFOMJWtRnFIeJPbf431uu0mI728Fxy9kT5cWP+xwG/KZfZ2qX8TcwV0cnvEqXRZSly0lG5z2Xeaa3pWwMXuve5Rx+58rU6CI/+LqwZv/dkqN9fdbXN/vJ4l4gKMtLiSujIZVnEZ56yfTHeDHtsTwwgb+cfbWIG3Ci875le70= If all you need is the shell, you could consider using getpwnam(). char *shell; struct passwd * userRec; userRec = getpwnam(username); shell = strdup(userRec.pw_shell); This will properly consult any Open Directory domains on the search policy. -Jason I have a relatively simple need for Open Directory (DirectoryService). I just need to get the current user's shell via NetInfo. The Apple API references are less than optimal, and the examples incomplete. Does anyone out there have a working ds* method for getting a record via NetInfo? I don't have any problem getting connected, etc., just the actual query is baffling me. Thanks in advance, _______________________________________________ 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… On 3/23/07, David Nedrow <dnedrow(a)mac.com> wrote: -David This email sent to site_archiver(a)lists.apple.com

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