October 2003 - Darwin-kernel

physio() to UIO_SYSSPACE
by Sam Vaughan 07 Oct '03

07 Oct '03

physio() seems to be aware of the possibility that it might be called to do I/O to kernel memory, yet it sets the B_PHYS flag regardless. This means that when the request hits the I/O kit in dkreadwrite, IOMemoryDescriptor::withAddress() will get called with the user task instead of the kernel task. The result is a failure in IOGeneralMemoryDescriptor::prepare(). I'm currently circumventing this behaviour with a hack. If it's UIO_SYSSPACE I mark the buffer in some way, then when my strategy routine is called I check for the mark and clear the B_PHYS flag. This works, but I'm curious to know if there's a better way. Sam _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Anti-virus developers
by Quinn 06 Oct '03

06 Oct '03

Greetings All Are you developing an anti-virus product for Mac OS X? If so, please drop me a line. S+E -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Technical Support * Networking, Communications, Hardware _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: Help! Can't get kext to load at boot...
by Brian Tabone 04 Oct '03

04 Oct '03

Brad, What did the kernel write in /Library/Logs/panic.log? With that info, it may be easier to back track and see what might have happened. -Brian T On Saturday, October 4, 2003, at 06:19 PM, Brad Post wrote: Well I did exactly that, and it works ... Almost. I created the base classes using the IOKit example, and placed my start code in the ::start method and the stop code in the ::stop method. Things work if I load the kext manually and unload it manually. Also I can boot up with the kext in the Extensions folder and it loads correctly too. But, if I try and unload the kext manually after I have booted, the machine kernel panics... I'm at home, so I don't have access to my two machine setup, so I won't know more till I get to work, but do you guys have any ideas off the top of your head? Thanks. Brad From: Dean Reece <dean.reece(a)apple.com> Date: Fri, 3 Oct 2003 17:41:45 -0700 To: Brad Post <bpost(a)microsoft.com>, Nathan Slingerland <nslingerland(a)apple.com> Cc: darwin-kernel(a)lists.apple.com Subject: Re: Help! Can't get kext to load at boot... This technique is best used only for KEXTs that need to load prior to root being mounted. KEXTs that can wait until after root mounts and the system goes "multiuser" should be loaded by a startup item (or similar daemon-type-thing) using kextload. For kexts that only need to load because of some user action, they should be loaded via kextload from the appropriate code path. For example, filesystems are loaded at the point that mount is run. We really want to keep the kext space free of kexts that load just because they happen to be there. Also, it is worth pointing out that using this technique makes you into an IOKit kext, and so you'll need to make sure your XCode settings are correct and you'll have to create at least one C++ class (a subclass of IOService). The ::start() method is where you'll do the stuff that would have been in your module_start() function, and ::stop() is where your module_stop() functionality would go. The OSBundleRequired property is usually not required and you should not include it unless you need to. Cases where you would need this are if your kext must be loaded prior to root mounting, or if your kext must be loaded even during safe boot. The legal values are documented at http://developer.apple.com/documentation/Darwin/Conceptual/howto/ kext_tutorials/loading_kexts/loading_kexts.html Cheers, - Dean On Friday, October 3, 2003, at 04:51 PM, Nathan Slingerland wrote: Hi Brad, I believe the CHUD kexts have similar requirements to your kext - we want our kexts to be loaded at boot time (actually at some point we will change this so that they are loaded on demand so as not to waste wired memory, but for now...) but don't actually match to any hardware device. Our Info.plist contains the following relevant fields (especially note the IOProviderClass and IOResourceMatch fields). Note that you do not to specify the OSBundleRequired characteristic to get the kexts to load at boot time (this only ensures that they will load even in safe mode). The tutorial at http://developer.apple.com/documentation/Darwin/Conceptual/howto/ kext_tutorials/hello_iokit/hello_iokit.html talks about some of these fields in more detail. <key>IOKitPersonalities</key> <dict> <key>FirstPersonality</key> <dict> <key>CFBundleIdentifier</key> <string>com.apple.iokit.CHUDUtils</string> <key>IOClass</key> <string>CHUDUtils</string> <key>IOMatchCategory</key> <string>CHUDUtils</string> <key>IOProviderClass</key> <string>IOResources</string> <key>IOResourceMatch</key> <string>IOKit</string> <key>IOUserClientClass</key> <string>CHUDUtilsUserClient</string> </dict> </dict> <key>OSBundleLibraries</key> <dict> <key>com.apple.kernel.bsd</key> <string>6.0</string> <key>com.apple.kernel.iokit</key> <string>6.0</string> <key>com.apple.kernel.mach</key> <string>6.0</string> </dict> -- Nathan Slingerland Architecture and Performance Group Apple Computer, Inc. On Oct 3, 2003, at 4:25 PM, Brad Post wrote: I'm at my wits end. I have tried everything to get my kext to load at boot time and it's not working, so I am hoping someone can help me. I've got the following set in the Info.plist OSBundleLibraries com.apple.kernel.bsd = 1.1 com.apple.kernel.mach = 1.1 com.apple.kernel.libkern = 1.1 OSBundleRequired = Root I have tried using kextcache and it reports no errors, it's just after I reboot the kext doesn't. I have tried the simple generic kext as well and it doesn't work, so can someone help? I need to be able to support 10.2 and later, so I am still using Project Builder... Thanks. Brad _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored. _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored. _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored. _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: Help! Can't get kext to load at boot...
by Brad Post 04 Oct '03

04 Oct '03

Well I did exactly that, and it works ... Almost. I created the base classes using the IOKit example, and placed my start code in the ::start method and the stop code in the ::stop method. Things work if I load the kext manually and unload it manually. Also I can boot up with the kext in the Extensions folder and it loads correctly too. But, if I try and unload the kext manually after I have booted, the machine kernel panics... I'm at home, so I don't have access to my two machine setup, so I won't know more till I get to work, but do you guys have any ideas off the top of your head? Thanks. Brad > From: Dean Reece <dean.reece(a)apple.com> > Date: Fri, 3 Oct 2003 17:41:45 -0700 > To: Brad Post <bpost(a)microsoft.com>, Nathan Slingerland > <nslingerland(a)apple.com> > Cc: darwin-kernel(a)lists.apple.com > Subject: Re: Help! Can't get kext to load at boot... > > This technique is best used only for KEXTs that need to load prior to > root being mounted. KEXTs that can wait until after root mounts and > the system goes "multiuser" should be loaded by a startup item (or > similar daemon-type-thing) using kextload. For kexts that only need to > load because of some user action, they should be loaded via kextload > from the appropriate code path. For example, filesystems are loaded at > the point that mount is run. We really want to keep the kext space > free of kexts that load just because they happen to be there. > > Also, it is worth pointing out that using this technique makes you into > an IOKit kext, and so you'll need to make sure your XCode settings are > correct and you'll have to create at least one C++ class (a subclass of > IOService). The ::start() method is where you'll do the stuff that > would have been in your module_start() function, and ::stop() is where > your module_stop() functionality would go. > > The OSBundleRequired property is usually not required and you should > not include it unless you need to. Cases where you would need this are > if your kext must be loaded prior to root mounting, or if your kext > must be loaded even during safe boot. The legal values are documented > at > http://developer.apple.com/documentation/Darwin/Conceptual/howto/ > kext_tutorials/loading_kexts/loading_kexts.html > > Cheers, > - Dean > > > > On Friday, October 3, 2003, at 04:51 PM, Nathan Slingerland wrote: > >> Hi Brad, >> >> I believe the CHUD kexts have similar requirements to your kext - we >> want our kexts to be loaded at boot time (actually at some point we >> will change this so that they are loaded on demand so as not to waste >> wired memory, but for now...) but don't actually match to any hardware >> device. >> >> Our Info.plist contains the following relevant fields (especially note >> the IOProviderClass and IOResourceMatch fields). Note that you do not >> to specify the OSBundleRequired characteristic to get the kexts to >> load at boot time (this only ensures that they will load even in safe >> mode). The tutorial at >> http://developer.apple.com/documentation/Darwin/Conceptual/howto/ >> kext_tutorials/hello_iokit/hello_iokit.html talks about some of these >> fields in more detail. >> >> <key>IOKitPersonalities</key> >> <dict> >> <key>FirstPersonality</key> >> <dict> >> <key>CFBundleIdentifier</key> >> <string>com.apple.iokit.CHUDUtils</string> >> <key>IOClass</key> >> <string>CHUDUtils</string> >> <key>IOMatchCategory</key> >> <string>CHUDUtils</string> >> <key>IOProviderClass</key> >> <string>IOResources</string> >> <key>IOResourceMatch</key> >> <string>IOKit</string> >> <key>IOUserClientClass</key> >> <string>CHUDUtilsUserClient</string> >> </dict> >> </dict> >> <key>OSBundleLibraries</key> >> <dict> >> <key>com.apple.kernel.bsd</key> >> <string>6.0</string> >> <key>com.apple.kernel.iokit</key> >> <string>6.0</string> >> <key>com.apple.kernel.mach</key> >> <string>6.0</string> >> </dict> >> >> >> -- >> Nathan Slingerland >> Architecture and Performance Group >> Apple Computer, Inc. >> >> >> >> On Oct 3, 2003, at 4:25 PM, Brad Post wrote: >> >>> I'm at my wits end. I have tried everything to get my kext to load >>> at boot >>> time and it's not working, so I am hoping someone can help me. >>> >>> I've got the following set in the Info.plist >>> >>> OSBundleLibraries >>> com.apple.kernel.bsd = 1.1 >>> com.apple.kernel.mach = 1.1 >>> com.apple.kernel.libkern = 1.1 >>> >>> OSBundleRequired = Root >>> >>> I have tried using kextcache and it reports no errors, it's just >>> after I >>> reboot the kext doesn't. >>> >>> I have tried the simple generic kext as well and it doesn't work, so >>> can >>> someone help? >>> >>> I need to be able to support 10.2 and later, so I am still using >>> Project >>> Builder... >>> >>> Thanks. >>> >>> Brad >>> _______________________________________________ >>> darwin-kernel mailing list | darwin-kernel(a)lists.apple.com >>> Help/Unsubscribe/Archives: >>> http://www.lists.apple.com/mailman/listinfo/darwin-kernel >>> Do not post admin requests to the list. They will be ignored. >> _______________________________________________ >> darwin-kernel mailing list | darwin-kernel(a)lists.apple.com >> Help/Unsubscribe/Archives: >> http://www.lists.apple.com/mailman/listinfo/darwin-kernel >> Do not post admin requests to the list. They will be ignored. _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: Help! Can't get kext to load at boot...
by Dean Reece 04 Oct '03

04 Oct '03

This technique is best used only for KEXTs that need to load prior to root being mounted. KEXTs that can wait until after root mounts and the system goes "multiuser" should be loaded by a startup item (or similar daemon-type-thing) using kextload. For kexts that only need to load because of some user action, they should be loaded via kextload from the appropriate code path. For example, filesystems are loaded at the point that mount is run. We really want to keep the kext space free of kexts that load just because they happen to be there. Also, it is worth pointing out that using this technique makes you into an IOKit kext, and so you'll need to make sure your XCode settings are correct and you'll have to create at least one C++ class (a subclass of IOService). The ::start() method is where you'll do the stuff that would have been in your module_start() function, and ::stop() is where your module_stop() functionality would go. The OSBundleRequired property is usually not required and you should not include it unless you need to. Cases where you would need this are if your kext must be loaded prior to root mounting, or if your kext must be loaded even during safe boot. The legal values are documented at http://developer.apple.com/documentation/Darwin/Conceptual/howto/ kext_tutorials/loading_kexts/loading_kexts.html Cheers, - Dean On Friday, October 3, 2003, at 04:51 PM, Nathan Slingerland wrote: Hi Brad, I believe the CHUD kexts have similar requirements to your kext - we want our kexts to be loaded at boot time (actually at some point we will change this so that they are loaded on demand so as not to waste wired memory, but for now...) but don't actually match to any hardware device. Our Info.plist contains the following relevant fields (especially note the IOProviderClass and IOResourceMatch fields). Note that you do not to specify the OSBundleRequired characteristic to get the kexts to load at boot time (this only ensures that they will load even in safe mode). The tutorial at http://developer.apple.com/documentation/Darwin/Conceptual/howto/ kext_tutorials/hello_iokit/hello_iokit.html talks about some of these fields in more detail. <key>IOKitPersonalities</key> <dict> <key>FirstPersonality</key> <dict> <key>CFBundleIdentifier</key> <string>com.apple.iokit.CHUDUtils</string> <key>IOClass</key> <string>CHUDUtils</string> <key>IOMatchCategory</key> <string>CHUDUtils</string> <key>IOProviderClass</key> <string>IOResources</string> <key>IOResourceMatch</key> <string>IOKit</string> <key>IOUserClientClass</key> <string>CHUDUtilsUserClient</string> </dict> </dict> <key>OSBundleLibraries</key> <dict> <key>com.apple.kernel.bsd</key> <string>6.0</string> <key>com.apple.kernel.iokit</key> <string>6.0</string> <key>com.apple.kernel.mach</key> <string>6.0</string> </dict> -- Nathan Slingerland Architecture and Performance Group Apple Computer, Inc. On Oct 3, 2003, at 4:25 PM, Brad Post wrote: I'm at my wits end. I have tried everything to get my kext to load at boot time and it's not working, so I am hoping someone can help me. I've got the following set in the Info.plist OSBundleLibraries com.apple.kernel.bsd = 1.1 com.apple.kernel.mach = 1.1 com.apple.kernel.libkern = 1.1 OSBundleRequired = Root I have tried using kextcache and it reports no errors, it's just after I reboot the kext doesn't. I have tried the simple generic kext as well and it doesn't work, so can someone help? I need to be able to support 10.2 and later, so I am still using Project Builder... Thanks. Brad _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored. _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored. _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: Help! Can't get kext to load at boot...
by Nathan Slingerland 03 Oct '03

03 Oct '03

Hi Brad, I believe the CHUD kexts have similar requirements to your kext - we want our kexts to be loaded at boot time (actually at some point we will change this so that they are loaded on demand so as not to waste wired memory, but for now...) but don't actually match to any hardware device. Our Info.plist contains the following relevant fields (especially note the IOProviderClass and IOResourceMatch fields). Note that you do not to specify the OSBundleRequired characteristic to get the kexts to load at boot time (this only ensures that they will load even in safe mode). The tutorial at http://developer.apple.com/documentation/Darwin/Conceptual/howto/ kext_tutorials/hello_iokit/hello_iokit.html talks about some of these fields in more detail. <key>IOKitPersonalities</key> <dict> <key>FirstPersonality</key> <dict> <key>CFBundleIdentifier</key> <string>com.apple.iokit.CHUDUtils</string> <key>IOClass</key> <string>CHUDUtils</string> <key>IOMatchCategory</key> <string>CHUDUtils</string> <key>IOProviderClass</key> <string>IOResources</string> <key>IOResourceMatch</key> <string>IOKit</string> <key>IOUserClientClass</key> <string>CHUDUtilsUserClient</string> </dict> </dict> <key>OSBundleLibraries</key> <dict> <key>com.apple.kernel.bsd</key> <string>6.0</string> <key>com.apple.kernel.iokit</key> <string>6.0</string> <key>com.apple.kernel.mach</key> <string>6.0</string> </dict> -- Nathan Slingerland Architecture and Performance Group Apple Computer, Inc. On Oct 3, 2003, at 4:25 PM, Brad Post wrote: I'm at my wits end. I have tried everything to get my kext to load at boot time and it's not working, so I am hoping someone can help me. I've got the following set in the Info.plist OSBundleLibraries com.apple.kernel.bsd = 1.1 com.apple.kernel.mach = 1.1 com.apple.kernel.libkern = 1.1 OSBundleRequired = Root I have tried using kextcache and it reports no errors, it's just after I reboot the kext doesn't. I have tried the simple generic kext as well and it doesn't work, so can someone help? I need to be able to support 10.2 and later, so I am still using Project Builder... Thanks. Brad _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored. _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: Help! Can't get kext to load at boot...
by Dean Reece 03 Oct '03

03 Oct '03

Brad, KEXTs only load on demand, meaning that something has to ask for them. The properties you've mentioned below are correct to make a driver available at boot time, but without something asking for it, it won't actually load & start. At boot-time, the only thing that currently generates KEXT load requests is I/O Kit via it's matching logic. If your kext is not an I/O Kit kext, then there really isn't anything you can do to get it to load prior to root being mounted. Hope this helps, - Dean On Friday, October 3, 2003, at 04:25 PM, Brad Post wrote: I'm at my wits end. I have tried everything to get my kext to load at boot time and it's not working, so I am hoping someone can help me. I've got the following set in the Info.plist OSBundleLibraries com.apple.kernel.bsd = 1.1 com.apple.kernel.mach = 1.1 com.apple.kernel.libkern = 1.1 OSBundleRequired = Root I have tried using kextcache and it reports no errors, it's just after I reboot the kext doesn't. I have tried the simple generic kext as well and it doesn't work, so can someone help? I need to be able to support 10.2 and later, so I am still using Project Builder... Thanks. Brad _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored. _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: Help! Can't get kext to load at boot...
by Brian Bergstrand 03 Oct '03

03 Oct '03

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Only IOKit kext's load automatically. So called "plain" or BSD kext's must be manually loaded. This is usually done by an application, but can also be done in a Startup Item script via kextload. HTH. On Friday, October 3, 2003, at 06:25 PM, Brad Post wrote: > I'm at my wits end. I have tried everything to get my kext to load at > boot > time and it's not working, so I am hoping someone can help me. > > I've got the following set in the Info.plist > > OSBundleLibraries > com.apple.kernel.bsd = 1.1 > com.apple.kernel.mach = 1.1 > com.apple.kernel.libkern = 1.1 > > OSBundleRequired = Root > > I have tried using kextcache and it reports no errors, it's just after > I > reboot the kext doesn't. > > I have tried the simple generic kext as well and it doesn't work, so > can > someone help? > > I need to be able to support 10.2 and later, so I am still using > Project > Builder... > > Thanks. > Brian Bergstrand <http://www.classicalguitar.net/brian/> PGP Key: <http://www.classicalguitar.net/brian/misc/public_key.txt> To err is human, but to really foul things up requires a computer. - Farmers' Almanac, 1978 -----BEGIN PGP SIGNATURE----- Version: PGP 8.0.2 iQA/AwUBP337zHnR2Fu2x7aiEQIkJwCeIN2lFuKMkCwj/XuyXhU4bmQk/PcAn0Fz aN6G9hoNlE94utrdYjKlFQc9 =EkTf -----END PGP SIGNATURE----- _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Help! Can't get kext to load at boot...
by Brad Post 03 Oct '03

03 Oct '03

I'm at my wits end. I have tried everything to get my kext to load at boot time and it's not working, so I am hoping someone can help me. I've got the following set in the Info.plist OSBundleLibraries com.apple.kernel.bsd = 1.1 com.apple.kernel.mach = 1.1 com.apple.kernel.libkern = 1.1 OSBundleRequired = Root I have tried using kextcache and it reports no errors, it's just after I reboot the kext doesn't. I have tried the simple generic kext as well and it doesn't work, so can someone help? I need to be able to support 10.2 and later, so I am still using Project Builder... Thanks. Brad _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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