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

Retrieving hard disk serial number
by Dirk Stegemann 15 Jun '06

15 Jun '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hello, (originally posted at carbon-dev) Best regards, Dirk Stegemann ----- ioreg output for different machines: 3) MacBook Pro is similar to iMac Core Duo. _______________________________________________ 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'd like to retrieve the system volume's hard disk serial number. For drives which indeed support such a serial number it can be read using the ioreg tool. Although I'd prefer to read the hard disk serial number using an API (e.g. IOKit) instead of using a dedicated tool, I'm more concerned about the different paths I seem to have to go through the dictionaries to get different drives' serial numbers when the drives are attached by different busses (see ioreg output below). Also, the *keys* used to query the dictionary for the S/N differ, e.g. "device serial" vs. "Serial Number". Apple's System Profiler gets them all, but maybe it also uses different code to read the S/N from different devices? Is there a recommended / unified way to retrieve a hard drive's serial number? At least, are there known pitfalls? Thanks for pointers, links, sample code snippets, comments, or whatever you might consider useful! P.S.: I've read TN1103 (the old version from 1998 which points to an antiquated ATA demo sample, as well as the new version which doesn't include disk querying capabilities). Ideally, I'd like to follow that versions IOKit query mechanism to retrieve the hard disk serial number. 1) ----- PB G4 17" (2005) -----> | +-o pci@f4000000 <class IOPlatformDevice, registered, matched, active, busy 0, retain count 10> | | | { [...] | | | } | | | | | +-o AppleMacRiscPCI <class AppleMacRiscPCI, !registered, ! matched, active, busy 0, retain count 12> | | | { [...] | | | } | | | | | +-o ata-6@D <class IOPCIDevice, registered, matched, active, busy 0, retain count 14> | | | | { [...] | | | | } | | | | | | | +-o AppleKauaiATA <class AppleKauaiATA, registered, matched, active, busy 0, retain count 5> | | | | { [...] | | | | } | | | | | | | +-o ATADeviceNub@0 <class ATADeviceNub, registered, matched, active, busy 0, retain count 6> | | | | { | | | | "ata device type" = "ata" | | | | "unit number" = 0 | | | | "IOUnit" = 0 | | | | "socket type" = "internal" | | | | "device model" = "ST9100823A " | | | | "extended LBA capacity" = 195371568 | | | | "device serial" = " 3LGxxxxx" | | | | "device revision" = "3.06 " | | | | } <----- PB G4 17" (2005) ----- 2) ----- iMac Core Duo 17" (2006) -----> | | +-o SATA@1F,2 <class IOPCIDevice, registered, matched, active, busy 0, retain count 15> | | | | { [...] | | | | } | | | | | | | +-o AppleAHCI <class AppleAHCI, !registered, !matched, active, busy 0, retain count 8> | | | | { [...] | | | | } | | | | | | | +-o AppleAHCIPort@2 <class AppleAHCIPort, registered, matched, active, busy 0, retain count 9> | | | | { [...] | | | | } | | | | | | | +-o IOAHCIDevice@0 <class IOAHCIDevice, registered, matched, active, busy 0, retain count 7> | | | | { [...] | | | | } | | | | | | | +-o AppleAHCIDiskDriver <class AppleAHCIDiskDriver, registered, matched, active, busy 0, retain count 9> | | | | { | | | | "NCQ" = Yes | | | | "IOMaximumBlockCountWrite" = 65536 | | | | "Revision" = "3.42 " | | | | "CFBundleIdentifier" = "com.apple.iokit.IOAHCIBlockStorage" | | | | "IOClass" = "AppleAHCIDiskDriver" | | | | "IOPolledInterface" = "not serializable" | | | | "IOProbeScore" = 0 | | | | "SATA Features" = 14 | | | | "IOMatchCategory" = "IODefaultMatchCategory" | | | | "Physical Interconnect Location" = "Internal" | | | | "Serial Number" = " 5MTxxxxx" | | | | "Model" = "ST3160023AS " | | | | "Physical Interconnect" = "SATA" | | | | "IOMaximumBlockCountRead" = 65536 | | | | "IOProviderClass" = "IOAHCIDevice" | | | | "Queue Depth" = 32 | | | | } <----- iMac Core Duo 15" (2006) ----- This email sent to site_archiver(a)lists.apple.com

1 0

Re: streaming QT using RTSP
by Justin C. Walker 15 Jun '06

15 Jun '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Jun 15, 2006, at 24:38 , Bonifar M S wrote: Regards, Justin -- Justin C. Walker, Curmudgeon-At-Large Institute for the Absorption of Federal Funds -------- Men are from Earth. Women are from Earth. Deal with it. -------- _______________________________________________ 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… hi all,i want to stream QT movies using plain RTSP; any pointers in this direction? I dont want to involve RTP in this. I had been reading RTSP RFC 2326 since two weeks now. It does say that RTSP is independent of RTP but fails to tell in details how we can do it. Any help would be great. Thanks in advance. Your best bet is to find one of the Apple lists that deals with this stuff. The Darwin-dev list is for discussions of development issues on the Darwin OS. See <http://lists.apple.com> for descriptions of the lists hosted by Apple. This email sent to site_archiver(a)lists.apple.com

1 0

Re: cpufrequency
by Dirk Schelfhout 15 Jun '06

15 Jun '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

1 0

Re: cpufrequency
by Dirk Schelfhout 15 Jun '06

15 Jun '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On 15 Jun 2006, at 04:19, André-John Mas wrote: Andre _______________________________________________ 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… Rather than trying to target the CPU frequency, have you considered housing your computer in such a way that it reduce the type of emissions causing the problems? At least a suitable housing could be applied to any computer you buy and would save you from trying to deal with them case be case. I have bought professional shielding material, which is properly grounded and completely encloses the imac. except for where the cables get out. This is the part that drives me completely nuts. :-( It doesn't help. ( I bought it from AARONIA AG , www.elektrosmog.de ) ( 100 dB attenuation ) Do you know what emission type affects you? Energy comes in many forms and knowing which one effects you and how should help you find the best shielding for your computer, and other hardware. As I mentioned before, cell phones , blue tooth and wifi give me the same problems. But I can happily stand next to a micro wave oven. :-) The imac is the worst though. _______________________________________________ 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/dirkschelfhout% 40mac.com This email sent to dirkschelfhout(a)mac.com This email sent to site_archiver(a)lists.apple.com

1 0

Re: cpufrequency
by Dirk Schelfhout 15 Jun '06

15 Jun '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… I tried this and yes it helps some. ( used this on the DTK system ) but the cable I bought isn't compatible with the mini-DVI connector. ( on the imac ) ( nor was it with the DTK system, so I had to buy a new video card just to test it ) But I want wathever affects me to be completely not there. Since you mention a 23-inch display, how about using a looong DVI cable and moving the CPU some distance away. Wastes the built-in display but at least you'd be able to work. offhand I don't remember the length limit for DVI but it should be enough to help (especially as radiation power drops off with square of distance). Cheers.....Peter This email sent to site_archiver(a)lists.apple.com

1 0

streaming QT using RTSP
by Bonifar M S 15 Jun '06

15 Jun '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

1 0

Re: Listing serial ports
by Chris Ridd 15 Jun '06

15 Jun '06

site_archiver(a)lists.apple.com Delivered-To: Darwin-dev(a)lists.apple.com Thread-index: AcaQP/QkMtg/VPwzEdqcVgARJHlZbA== Thread-topic: Listing serial ports User-agent: Microsoft-Entourage/11.2.4.060510 On 15/6/06 3:54, André-John Mas <ajmas(a)sympatico.ca> wrote: > Hi, > > What is the right way to list serial ports, as to get user-friendly > display names. I am currently using this following implementation of > the javax.comm API: > > http://www.rxtx.org/ > > Though it returns very unix like /dev/cu.* and /dev/tty.* entries. > If I can I would be tempted to update it so that something more > suitable to displaying to a user is implemented. Use the IOKit. There's some code showing how to dynamically detect serial USB devices being connected and disconnected at <http://www.cocoadev.com/index.pl?StillCannotUnderstandIORegistry> (note not the first code snippet, the second one which has DeviceAddedCallback and DeviceRemovedCallback.) It works really nicely, and you hardly have to understand IOKit to use it (which is the best part :-) That page references an Apple document which may help (and references some Apple sample code): <http://developer.apple.com/documentation/DeviceDrivers/Conceptual/WorkingWS erial/index.html> Cheers, Chris _______________________________________________ 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

1 0

Listing serial ports
by André-John Mas 15 Jun '06

15 Jun '06

site_archiver(a)lists.apple.com Delivered-To: Darwin-dev(a)lists.apple.com Hi, What is the right way to list serial ports, as to get user-friendly display names. I am currently using this following implementation of the javax.comm API: http://www.rxtx.org/ Though it returns very unix like /dev/cu.* and /dev/tty.* entries. If I can I would be tempted to update it so that something more suitable to displaying to a user is implemented. Andre _______________________________________________ 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

1 0

Re: cpufrequency
by André-John Mas 15 Jun '06

15 Jun '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Andre _______________________________________________ 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… Rather than trying to target the CPU frequency, have you considered housing your computer in such a way that it reduce the type of emissions causing the problems? At least a suitable housing could be applied to any computer you buy and would save you from trying to deal with them case be case. Do you know what emission type affects you? Energy comes in many forms and knowing which one effects you and how should help you find the best shielding for your computer, and other hardware. This email sent to site_archiver(a)lists.apple.com

1 0

Re: cpufrequency
by Michael Smith 15 Jun '06

15 Jun '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com If that doesn't work I'll have to sell it and buy a pc that can drive the monitor. ( I believe on pc's you can set it in the bios. That's what a pc friend told me ) = 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… On Jun 14, 2006, at 12:48 PM, Dirk Schelfhout <dirkschelfhout(a)mac.com> wrote: I'll put some more effort in trying to install linux on it. Speaking as one of the "mole people" (thanks, Ethan 8) alluded to here, I can tell you that this won't necessarily help you very much. What range of frequencies do you believe affects you? The currently shipping Core Duo systems have a useful frequency range of about 1.5-2.16GHz; there is little or nothing to be saved in terms of power by running them below 1.5GHz so nobody supports this. It is not currently possible to jam Mac OS X on Intel Macintoshes into a 'lower' freqency range; some systems run at a fixed maximum frequency while others are frequency-agile. In either case, the system attempts to deliver maximum performance, and reducing the operating frequency is not consistent with that. Very few PC systems support this, and on most of those Windows will ignore the BIOS settings. You may find an alternative system that doesn't give you a headache, but it won't be because you've managed to make it run slower. It is perhaps worth noting, in passing, that the CPU frequency is among the least likely to be directly or indirectly radiated by your Mac. To begin with, it has one of the shortest wavelengths, meaning that it is attenuated by a great many things including the chassis and your skull. Then, there is the fact that it is entirely generated and contained within the CPU, meaning that it is comprehensively shielded by the die substrate, heatsink and PCB power planes beneath the socket. The power supply to the CPU is extremely heavily decoupled, meaning that clock radiation from power lines is suppressed as well. There are a number of other timing domains with much more viable radiation capabilities (various I/O busses, LCD panel scan, power supplies, LCD inverter etc.) although bear in mind that these systems are extensively shielded with an eye to minimising external radiation, and none of these domains are affected by changing the speed of the CPU. Equivalent timing domains are likely to be similar or identical on any modern Intel- or AMD-based system. This email sent to site_archiver(a)lists.apple.com

1 0