May 2005 - Darwin-dev - lists.apple.com

DiskArbitration API
by Jesper Papmehl 02 May '05

02 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hello! Thanks for any help! /Jesper Papmehl Propellerheads _______________________________________________ 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… We have an app that reads (removable) disks that uses a file system that Mac OS X doesn't recognize. We have been using the DiskArbitration API to make the OS ignore the disks as they are inserted, to prevent the "disk cannot be read" dialog from appearing. This has been working fine, until Tiger, where it stopped working because the DiskArbitration API has been completely redesigned. (Not that I'm complaining, I know that we have been using a private, unsupported API.) I have not been able to find any documentation for the new API (apart from the brief comments in the headers), and I'm having a bit of trouble getting started. What I want to do is to get notified whenever a disk is about to be mounted, and then tell the OS to ignore the disk. Does anyone know how to do this using the Tiger version of DiskArbitration? This email sent to site_archiver(a)lists.apple.com

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Re: pty-redir: Slave, Master, and how it all works
by John Davidorff Pell 02 May '05

02 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Oops. JP On 1 May 2005, at 23:24, John Davidorff Pell wrote: Howdy folks! Help! :-! JP _______________________________________________ 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… The URL that should have been [1] in my post is http:// homepage.mac.com/johnpell/pty-redir.pell.c I'm hoping somebody out there can help me. I've never worked on code that messes with pseudo-terminals, so I'm still fuzzy on the concepts involved. I'm trying to use pty-redir(1). For those of you who are not familiar with it, it basically attaches a program to /dev/ptyXX and then prints to stdout /dev/ttyXX. The idea is that someone can then attach to the tty and control the program on the pty. Its not working for me, however. In fact, I've never been able to get it to work. Here's what my goal is: I want to start a shell on a pty, then attach to the tty (using screen(1), for example), pop, have a shell. Screen(1) has the wonderful ability to attach to a specified tty! :-) Yay! Ok, that side is done, since I use screen(1) already. pty-redir(1) is intended to do the other side. The code I'm using is posted here [1]. The virgin 0.1 release exhibits the same problem, and 0.2 is debian specific. The code at [1] is a merger of the two. :-) If, per chance, this is not the best place to ask this question, please direct me elsewhere. This email sent to site_archiver(a)lists.apple.com

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pty-redir: Slave, Master, and how it all works
by John Davidorff Pell 02 May '05

02 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Howdy folks! Help! :-! JP _______________________________________________ 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 hoping somebody out there can help me. I've never worked on code that messes with pseudo-terminals, so I'm still fuzzy on the concepts involved. I'm trying to use pty-redir(1). For those of you who are not familiar with it, it basically attaches a program to /dev/ptyXX and then prints to stdout /dev/ttyXX. The idea is that someone can then attach to the tty and control the program on the pty. Its not working for me, however. In fact, I've never been able to get it to work. Here's what my goal is: I want to start a shell on a pty, then attach to the tty (using screen (1), for example), pop, have a shell. Screen(1) has the wonderful ability to attach to a specified tty! :-) Yay! Ok, that side is done, since I use screen(1) already. pty-redir(1) is intended to do the other side. The code I'm using is posted here [1]. The virgin 0.1 release exhibits the same problem, and 0.2 is debian specific. The code at [1] is a merger of the two. :-) If, per chance, this is not the best place to ask this question, please direct me elsewhere. This email sent to site_archiver(a)lists.apple.com

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Re: Tiger and libreadline
by Bill Northcott 02 May '05

02 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Fink has a patch line Bill Northcott _______________________________________________ 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 01/05/2005, at 6:56 PM, Martin Costabel wrote: Many GNU packages rely on libreadline. It seems that in Darwin there is a BSD libedit, which is symlinked as libreadline and has a corresponding readline.h. This breaks Octave and probably other builds. Yes, this is annoying, but it fits into the pattern of Apple first putting a broken version of a new open source package into OSX (there are quite a few historical examples for this). A correct version can probably be expected for the OSX release "Sabre-tooth cat" :-) The Tiger version is neither broken nor 'incorrect'. It does what it says on the tin. It is however the BSD version not the GNU version. If the GNU readline is installed in /usr/local, is there a preferred way to ensure that configure scripts pick it up? perl -pi -e 's|LIBREADLINE=\"-lreadline|LIBREADLINE=\"-L%p/lib - lreadline|g' mkoctfile in its octave package description for Tiger. Replace %p by /usr/ local in your case. Actually by default /usr/local/lib should be searched before /usr/lib and /usr/local/include before /usr/ include, so this shouldn't even be necessary in your case. At link time -lreadline will pick up the GNU version, but the problem is the in the configuration file. Also I believe I believe in fixing once and fixing properly, not maintaining a massive and growing database of patches like Fink. I think the answer is to use a use an autoconf macro like the one in R, which clearly differentiates between the BSD and GNU versions of readline. The current Octave macro will likely break on a number of other UNIXen. This email sent to site_archiver(a)lists.apple.com

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Re: Tiger and libreadline
by Martin Costabel 01 May '05

01 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Mozilla Thunderbird 1.0 (Macintosh/20041206) Many GNU packages rely on libreadline. Fink has a patch line -- Martin _______________________________________________ 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… Bill Northcott wrote: It seems that in Darwin there is a BSD libedit, which is symlinked as libreadline and has a corresponding readline.h. This breaks Octave and probably other builds. Yes, this is annoying, but it fits into the pattern of Apple first putting a broken version of a new open source package into OSX (there are quite a few historical examples for this). A correct version can probably be expected for the OSX release "Sabre-tooth cat" :-) If the GNU readline is installed in /usr/local, is there a preferred way to ensure that configure scripts pick it up? perl -pi -e 's|LIBREADLINE=\"-lreadline|LIBREADLINE=\"-L%p/lib -lreadline|g' mkoctfile in its octave package description for Tiger. Replace %p by /usr/local in your case. Actually by default /usr/local/lib should be searched before /usr/lib and /usr/local/include before /usr/include, so this shouldn't even be necessary in your case. This email sent to site_archiver(a)lists.apple.com

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Tiger and libreadline
by Bill Northcott 01 May '05

01 May '05

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Many GNU packages rely on libreadline. Bil Northcott _______________________________________________ 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… It seems that in Darwin there is a BSD libedit, which is symlinked as libreadline and has a corresponding readline.h. This breaks Octave and probably other builds. If the GNU readline is installed in /usr/local, is there a preferred way to ensure that configure scripts pick it up? This email sent to site_archiver(a)lists.apple.com

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