January 2006 - Darwin-dev - lists.apple.com

Re: Obtaining an IOSCSIMultimediaCommandsDevice instance
by Chris Sarcone 24 Jan '06

24 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Stephen -- -- Chris On Jan 24, 2006, at 3:46 PM, me(a)sbooth.org wrote: Hi Chris, Thanks for the response! Preferably user-level. If the latter, you might want to check out the sample code found in / Developer/Examples/IOKit/scsi/SCSITaskLib and consult Accessing Hardware From Applications (http://developer.apple.com/documentation/ DeviceDrivers/Conceptual/AccessingHardware/AH_Intro/ chapter_1_section_1.html). Stephen HTH, -- Chris On Jan 24, 2006, at 2:30 PM, me(a)sbooth.org wrote: I will start by saying the IOKit is pretty much a black box for me. I've done only basic tasks such as creating a dictionary and calling IOServiceGetMatchingServices for it. Unless I've missed something, the IOKit documentation is slightly less than stunning so I'm asking for help here. I want to create an IOSCSIMultimediaCommandsDevice for accessing an audio CD using MMC-2 commands. If I may rant for a moment, the superclass to IOSCSIMultimediaCommandsDevice is IOSCSIPrimaryCommandsDevice defined in "IOSCSIPrimaryCommandsDevice.h". I don't even have that header file in my 10.4u SDK! It's only in the 10.3.9 IOKit. To boot, that class' superclass is IOSCSIProtocolInterface which also appears only to exist in my 10.3.9 SDK. Anyway, IOSCSIMultimediaCommandsDevice is a subclass of IOService. Can anyone step me through how I would go about obtaining an instance of this class? _______________________________________________ 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… What type of raw commands are you trying to send? Have you looked at the list of CD ioctls OS X supports? You might want to start out with what you are trying to achieve. Are you trying to send commands from kernel-level code or user-level code? I've read these now (thanks for the pointer), and also consulted the example code, but I'm still confused. The problem for me is that this all seems geared towards CD/DVD authoring and authoring-capable devices. For my application authoring doesn't matter. All I "need" to do is send a small subset of the MMC-2 commands to the drive to access an audio CD. I have had some success creating an MMCDeviceInterface, but that really doesn't help me because I can't obtain exclusive access from SCSITaskDeviceInterface. Even if I could, I'm not sure how that would help me because I really don't want to send raw SCSI tasks. I still don't understand enough about IOServiceGetMatchingServices to know which key to pass in to try and get an IOSCSIMultimediaCommandsDevice. Thanks! _______________________________________________ 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/sarcone% 40apple.com This email sent to sarcone(a)apple.com This email sent to site_archiver(a)lists.apple.com

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Re: Obtaining an IOSCSIMultimediaCommandsDevice instance
by me＠sbooth.org 24 Jan '06

24 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Importance: Normal User-agent: SquirrelMail/1.4.5 Hi Chris, Thanks for the response! > You might want to start out with what you are trying to achieve. Are > you trying to send commands from kernel-level code or user-level code? Preferably user-level. > If the latter, you might want to check out the sample code found in / > Developer/Examples/IOKit/scsi/SCSITaskLib and consult Accessing > Hardware From Applications (http://developer.apple.com/documentation/ > DeviceDrivers/Conceptual/AccessingHardware/AH_Intro/ > chapter_1_section_1.html). I've read these now (thanks for the pointer), and also consulted the example code, but I'm still confused. The problem for me is that this all seems geared towards CD/DVD authoring and authoring-capable devices. For my application authoring doesn't matter. All I "need" to do is send a small subset of the MMC-2 commands to the drive to access an audio CD. I have had some success creating an MMCDeviceInterface, but that really doesn't help me because I can't obtain exclusive access from SCSITaskDeviceInterface. Even if I could, I'm not sure how that would help me because I really don't want to send raw SCSI tasks. I still don't understand enough about IOServiceGetMatchingServices to know which key to pass in to try and get an IOSCSIMultimediaCommandsDevice. Stephen > > HTH, > > -- Chris > > > On Jan 24, 2006, at 2:30 PM, me(a)sbooth.org wrote: > >> I will start by saying the IOKit is pretty much a black box for >> me. I've >> done only basic tasks such as creating a dictionary and calling >> IOServiceGetMatchingServices for it. Unless I've missed something, >> the >> IOKit documentation is slightly less than stunning so I'm asking >> for help >> here. >> >> I want to create an IOSCSIMultimediaCommandsDevice for accessing an >> audio >> CD using MMC-2 commands. >> >> If I may rant for a moment, the superclass to >> IOSCSIMultimediaCommandsDevice is IOSCSIPrimaryCommandsDevice >> defined in >> "IOSCSIPrimaryCommandsDevice.h". I don't even have that header >> file in my >> 10.4u SDK! It's only in the 10.3.9 IOKit. To boot, that class' >> superclass is IOSCSIProtocolInterface which also appears only to >> exist in >> my 10.3.9 SDK. >> >> Anyway, IOSCSIMultimediaCommandsDevice is a subclass of IOService. >> Can >> anyone step me through how I would go about obtaining an instance >> of this >> class? >> >> Thanks! >> _______________________________________________ >> 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/sarcone%40apple.com >> >> This email sent to sarcone(a)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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Re: Obtaining an IOSCSIMultimediaCommandsDevice instance
by Chris Sarcone 24 Jan '06

24 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hi -- HTH, -- Chris On Jan 24, 2006, at 2:30 PM, me(a)sbooth.org wrote: Thanks! _______________________________________________ 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/sarcone%40apple.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… You might want to start out with what you are trying to achieve. Are you trying to send commands from kernel-level code or user-level code? If the latter, you might want to check out the sample code found in / Developer/Examples/IOKit/scsi/SCSITaskLib and consult Accessing Hardware From Applications (http://developer.apple.com/documentation/ DeviceDrivers/Conceptual/AccessingHardware/AH_Intro/ chapter_1_section_1.html). I will start by saying the IOKit is pretty much a black box for me. I've done only basic tasks such as creating a dictionary and calling IOServiceGetMatchingServices for it. Unless I've missed something, the IOKit documentation is slightly less than stunning so I'm asking for help here. I want to create an IOSCSIMultimediaCommandsDevice for accessing an audio CD using MMC-2 commands. If I may rant for a moment, the superclass to IOSCSIMultimediaCommandsDevice is IOSCSIPrimaryCommandsDevice defined in "IOSCSIPrimaryCommandsDevice.h". I don't even have that header file in my 10.4u SDK! It's only in the 10.3.9 IOKit. To boot, that class' superclass is IOSCSIProtocolInterface which also appears only to exist in my 10.3.9 SDK. Anyway, IOSCSIMultimediaCommandsDevice is a subclass of IOService. Can anyone step me through how I would go about obtaining an instance of this class? This email sent to sarcone(a)apple.com This email sent to site_archiver(a)lists.apple.com

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Obtaining an IOSCSIMultimediaCommandsDevice instance
by me＠sbooth.org 24 Jan '06

24 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Importance: Normal User-agent: SquirrelMail/1.4.5 I will start by saying the IOKit is pretty much a black box for me. I've done only basic tasks such as creating a dictionary and calling IOServiceGetMatchingServices for it. Unless I've missed something, the IOKit documentation is slightly less than stunning so I'm asking for help here. I want to create an IOSCSIMultimediaCommandsDevice for accessing an audio CD using MMC-2 commands. If I may rant for a moment, the superclass to IOSCSIMultimediaCommandsDevice is IOSCSIPrimaryCommandsDevice defined in "IOSCSIPrimaryCommandsDevice.h". I don't even have that header file in my 10.4u SDK! It's only in the 10.3.9 IOKit. To boot, that class' superclass is IOSCSIProtocolInterface which also appears only to exist in my 10.3.9 SDK. Anyway, IOSCSIMultimediaCommandsDevice is a subclass of IOService. Can anyone step me through how I would go about obtaining an instance of this class? Thanks! _______________________________________________ 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: intercepting system calls?
by Erik Paulson 24 Jan '06

24 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Mutt/1.4.2.1i On Mon, Jan 23, 2006 at 02:01:20PM -0800, Mike Smith wrote: > > Ok; here's where we got a bit of a disconnect. The runtime environment > on Mac OS (which is primarily what Darwin lives to support) is a lot > more > complicated than that on something like Linux (unless you bring KDE > into the picture, and even then...). > > It's not sufficient in the general sense to redirect a single > application; there > are quite a large number of situations in which work is done for an > application > by proxy, and to have that happen correctly the proxy has to have > relevant > context. > I'm not trying to support every possible application, just a few. Most of what I want to run will be things like legacy FORTRAN and C console programs. I don't want to run iTunes :) > Now, arguably you can redirect the proxy requests, but now you're > talking > about handling distributed shared memory as well, and don't forget the > heavy use of Mach-style messaging. > Again, I don't expect to see a lot of those. I'm perfectly willing to abort a program when it runs and tries to execute a system call that I'm not prepared to handle. <...> > >Such an unprivileged interface doesn't appear to exist, short of some > >sort of binary rewriting or single stepping. > > You can achieve this with the dynamic linker interfaces already > mentioned. > With the caveat that the dynamic linker gives no feedback when I miss an interface. Trapping system calls means that I can see every byte that goes in and out of a processes address space. -Erik _______________________________________________ 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: How to list all files opened by a process on the Mac OS X?
by Alexander von Below 24 Jan '06

24 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Glad you asked! Thanks a lot Alex = 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… Am 24.01.2006 um 21:51 schrieb Mike Smith: To start with, why are you interested in this information? What do you expect to do with it? I would like to know which files of a certain pattern (say: Extension) are opened by other processes, and I am interested in the full path. Not much else really, maybe the process ID that has opened it. Preferably I would like to do it without root privileges, because I am actually only interested in processes owned by the current user. Right now, I am calling lsof from my code, and just parse the output. This seems like a pretty wasteful way of achieving what I need. It would be great to know if there even is a smarter way of doing this. I did succeed in getting a file list from sysctl, but was unsuccessful in reading the corresponding vnodes (I assume that I was I need to obtain the full path) This email sent to site_archiver(a)lists.apple.com

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Re: How to list all files opened by a process on the Mac OS X?
by Mike Smith 24 Jan '06

24 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Jan 24, 2006, at 12:02 PM, darwin-dev-request(a)lists.apple.com wrote: From: Alexander von Below <below(a)mac.com> Subject: Re: How to list all files opened by a process on the Mac OS X? To: Chen Ben <ben.sleeper(a)gmail.com> Cc: darwin-dev(a)lists.apple.com Message-ID: <4DFC1D4D-5E52-46EE-9100-25F7DA379F18(a)mac.com> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Hello, I am currently working on this, too, and sysctl sounds to be a good way to got with CTL_KERN and KERN_FILE. You might want to look at this example: http://gobsd.com/code/freebsd/lib/libkvm/kvm_file.c Something that scared me was this post: http://lists.apple.com/ archives/darwin-kernel/2004/Mar/msg00034.html but I will try if that still is the case Bye Alex Am 25.12.2005 um 17:32 schrieb Chen Ben: Hi all! How can I list all open files of one process? I have used sysctl to list many process infomations, but I cannot find a way to get something like the vnode or file descripters of one process. = 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… What should I do? To start with, why are you interested in this information? What do you expect to do with it? This email sent to site_archiver(a)lists.apple.com

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Re: assembly instrcutions asm/io.h alternative
by Mike Smith 24 Jan '06

24 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Jan 24, 2006, at 12:02 PM, darwin-dev-request(a)lists.apple.com wrote: From: rohit dhamija <rohit.dhamija(a)gmail.com> Subject: assembly instrcutions asm/io.h alternative To: darwin-dev(a)lists.apple.com Message-ID: <855b43e90601232336o2a2ed9d1l7719416829be822b(a)mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1" Hi, Working on Mac OS 10.4 = 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… I am porting a win32 based C file to Mac platform and using gcc to compile, the file includes some assembly level instructions and includes #include <asm/io.h> file. But there is not such asm folder in /usr/include Is there any alternative to io.h file in Mac OS ? Although the same file exists in Linux OS. Any suggestions/comments are welcome. Typically inclusion of this file indicates that the code in question thinks it can access hardware directly. User-space hardware access is not permitted under Darwin; without knowing exactly what the code in question is trying to do, there is no possible way to help you. Please, when opening a new topic on this list, make *sure* that you give as much detail as you can on what it is you are trying to do, and why. This email sent to site_archiver(a)lists.apple.com

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Re: How to list all files opened by a process on the Mac OS X?
by Derick Centeno 24 Jan '06

24 Jan '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com $ lsof > openfiles Then open it with your favorite editor, say vim. Good luck ... On Dec 25, 2005, at 11:58 AM, Jerald Dawson wrote: lsof will give you this information. See man lsof for more info. -j On Dec 25, 2005, at 10:32 AM, Chen Ben wrote: Hi all! How can I list all open files of one process? I have used sysctl to list many process infomations, but I cannot find a way to get something like the vnode or file descripters of one process. What should I do? _______________________________________________ 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… When I used lsof it provided a listiing of over 250 lines! I would recommend the simple expedient of saving the output of lsof to a file. Example: Thanks -- Ben Chen, Apple Technology Lab of Software Engineering School, Tongji University This email sent to site_archiver(a)lists.apple.com

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Re: How to list all files opened by a process on the Mac OS X?
by Alexander von Below 24 Jan '06

24 Jan '06

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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