June 2005 - Darwin-kernel - lists.apple.com

Re: xnu-792.1.5 leaner than Mac OS X 10.4.1
by John Davidorff Pell 03 Jun '05

03 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Ok, thanks. I just had never heard this before. Do you know, offhand, what is different? Is there a list somewhere? Thanx, JP On 2 Jun 2005, at 23:29, Kevin Van Vechten wrote: - Kevin On Jun 2, 2005, at 10:45 PM, John Davidorff Pell wrote: JP On 2 Jun 2005, at 12:52, Kevin Van Vechten wrote: This email sent to jpell.lists(a)mac.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… Obviously there's a difference that prompted you to ask if you could build the "full" version in the first place. My response is true, and I know because I post the source code archives. Is this true? I never knew that XNU was different between the editions. I do know that many kexts are binary only. Is this speculation or knowledge? Do you have references... No, it is not possible. Apple does not release the entire source code of the mach_kernel. However, there is rarely any practical difference, and I haven't personally encountered any problems using a Darwin kernel on Mac OS X. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/jpell.lists% 40mac.com This email sent to site_archiver(a)lists.apple.com

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Re: xnu-792.1.5 leaner than Mac OS X 10.4.1
by Kevin Van Vechten 03 Jun '05

03 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com - Kevin On Jun 2, 2005, at 10:45 PM, John Davidorff Pell wrote: JP On 2 Jun 2005, at 12:52, Kevin Van Vechten wrote: _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… Obviously there's a difference that prompted you to ask if you could build the "full" version in the first place. My response is true, and I know because I post the source code archives. Is this true? I never knew that XNU was different between the editions. I do know that many kexts are binary only. Is this speculation or knowledge? Do you have references... No, it is not possible. Apple does not release the entire source code of the mach_kernel. However, there is rarely any practical difference, and I haven't personally encountered any problems using a Darwin kernel on Mac OS X. This email sent to site_archiver(a)lists.apple.com

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xnu-792.1.5 link error
by mario park 02 Jun '05

02 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=k1tF3Wn+1IiPdTzZheisG4dgm4fX3ORAQBbN8nUsZqqj0iA2jPbshWC/TC0+31IqOQxLbWnmdeX23f5EnT+th7iSsPndS3ToEVko365zbV/R1x3DnaJfTjz6VCWeJsb1+np/fHjXxVmoR7YGTrQwfNi+85rpVKxG0AIO+O1Xr3g= hi, i'm trying to compile darwin kernel(xnu-792.1.5) on my tiger box. but got error on very last link stage. i don't know what's the problem. :( ---------------------------------------------------------------------------------------------------------------- [ building mach_kernel ] newvers.pl: Stamping version "8.1.0" into "/var/root/kerntool/xnu/BUILD/obj/RELEASE_PPC/version.c" ... 5 replacements /usr/bin/cc -c -static -g -nostdinc -nostdlib -no-cpp-precomp -fno-builtin -finline -fno-keep-inline-functions -msoft-float -fsigned-bitfields -arch ppc -Dppc -DPPC -D__PPC__ -DPAGE_SIZE_FIXED -O2 -mcpu=750 -mmultiple -fschedule-insns -DAPPLE -DNeXT -DKERNEL -DKERNEL_PRIVATE -DXNU_KERNEL_PRIVATE -DPRIVATE -D__MACHO__=1 -Dvolatile=__volatile -I. -I/var/root/kerntool/xnu/. -I/var/root/kerntool/xnu/BUILD/obj/EXPORT_HDRS/. -I/var/root/kerntool/xnu/BUILD/obj/EXPORT_HDRS/osfmk -I/var/root/kerntool/xnu/BUILD/obj/EXPORT_HDRS/bsd -I/var/root/kerntool/xnu/BUILD/obj/EXPORT_HDRS/iokit -I/var/root/kerntool/xnu/BUILD/obj/EXPORT_HDRS/pexpert -I/var/root/kerntool/xnu/BUILD/obj/EXPORT_HDRS/libkern -I/var/root/kerntool/xnu/BUILD/obj/EXPORT_HDRS/libsa -I/var/root/kerntool/xnu/BUILD/obj/EXTERN_HDRS -I/var/root/kerntool/xnu/EXTERNAL_HEADERS -I/var/root/kerntool/xnu/EXTERNAL_HEADERS/bsd /var/root/kerntool/xnu/BUILD/obj/RELEASE_PPC/version.c -o /var/root/kerntool/xnu/BUILD/obj/RELEASE_PPC/version.o /usr/bin/ld -static -force_cpusubtype_ALL -e __start -segalign 0x1000 -sectalign __TEXT __text 0x1000 -sectalign __DATA __common 0x1000 -sectalign __DATA __bss 0x1000 -sectcreate __PRELINK __text /dev/null -sectcreate __PRELINK __symtab /dev/null -sectcreate __PRELINK __info /dev/null -arch ppc -segaddr __VECTORS 0x0 -segaddr __HIB 0x7000 -segaddr __TEXT 0xe000 /var/root/kerntool/xnu/BUILD/obj/RELEASE_PPC/./osfmk/RELEASE/osfmk.o /var/root/kerntool/xnu/BUILD/obj/RELEASE_PPC/./bsd/RELEASE/bsd.o /var/root/kerntool/xnu/BUILD/obj/RELEASE_PPC/./iokit/RELEASE/iokit.o /var/root/kerntool/xnu/BUILD/obj/RELEASE_PPC/./pexpert/RELEASE/pexpert.o /var/root/kerntool/xnu/BUILD/obj/RELEASE_PPC/./libkern/RELEASE/libkern.o /var/root/kerntool/xnu/BUILD/obj/RELEASE_PPC/./libsa/RELEASE/libsa.o /var/root/kerntool/xnu/BUILD/obj/RELEASE_PPC/version.o -o /var/root/kerntool/xnu/BUILD/obj/RELEASE_PPC/./mach_kernel.sys -lcc_kext; \ /usr/bin/strip -S -x /var/root/kerntool/xnu/BUILD/obj/RELEASE_PPC/./mach_kernel.sys -o /var/root/kerntool/xnu/BUILD/obj/RELEASE_PPC/./mach_kernel; /usr/bin/ld: Undefined symbols: _getpagesize _mach_task_self_ make[2]: *** [do_build_mach_kernel] Error 1 make[1]: *** [build_all] Error 2 make: *** [all] Error 2 mario:~/kerntool/xnu root# cc --version cc (GCC) 3.3 20030304 (Apple Computer, Inc. build 1809) mario:~/kerntool/xnu root# c++ --version c++ (GCC) 3.3 20030304 (Apple Computer, Inc. build 1809) _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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IOAccelFindAccelerator
by Jens von der Heydt 02 Jun '05

02 Jun '05

site_archiver(a)lists.apple.com Delivered-To: Darwin-kernel(a)lists.apple.com User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.7) Gecko/20050414 Hi, Regards, Jens _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… I'm developing my own graphics driver, with IOFramebuffer and an adjusted CFPlugin for acceleration. I'm posting this question to this specific groups because I feel it's not a driver related question but more a kernel specific architecture question. I'm missing a deeper understanding on how the graphics system of OS X is started. My IOFramebuffer implementation gets loaded, starts working, through it's connection in the info.plist file, my IOCFPlugin for acceleration gets loaded, probed and started. I know that I had to run IOAccelFindAccelerator in the start method, but I don't know what this call is supposed to achieve at all. Could anybody please "enlighten" me there ? This email sent to site_archiver(a)lists.apple.com

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Re: xnu-792.1.5 leaner than Mac OS X 10.4.1
by Kevin Van Vechten 02 Jun '05

02 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On Jun 3, 2005, at 11:22 AM, Jake Luck wrote: Comparing the result of xnu-792.1.5 vs. the retail 10.4.1 kernel -rw-r--r-- 1 jake wheel 4274104 May 26 18:32 /mach_kernel.mine -rw-r--r-- 1 root wheel 4313056 May 10 21:16 /mach_kernel So they are. - Kevin _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… - Is it possible to build a "full" Mac OS X kernel from the darwin source? No, it is not possible. Apple does not release the entire source code of the mach_kernel. However, there is rarely any practical difference, and I haven't personally encountered any problems using a Darwin kernel on Mac OS X. the following symbols were missing from the kernel built from the source: _IOHibernateSystemHasSlept _IOHibernateSystemInit _IOHibernateSystemPostWake _IOHibernateSystemSleep _IOHibernateSystemWake _WKdm_compress _WKdm_decompress __Z16IOPolledFileOpenPKcP24IOBufferMemoryDescriptorPP18IOPolledFileIOV arsPP6OSDataS8_ __Z17IOPolledFileCloseP18IOPolledFileIOVars _boffDur _boffFuzz _boffGo _boffIntrq _boffLock _boffLockInit _boffOn _boffSCnt _boffSEarly _boffSettingsInit _boffStim _boffSync _chudxnu_version _dboffDur _dboffFuzz _dboffSync _gIOHibernateCryptWakeVars _gIOHibernateCurrentHeader _gIOHibernateFreeTime _gIOHibernateGraphicsInfo _gIOHibernateMode _gIOHibernateRestoreStack _gIOHibernateRestoreStackEnd _gIOHibernateState _hashLookupTable _hibernate_kernel_entrypoint _hibernate_machine_entrypoint _hibernate_machine_init _hibernate_page_bitset _hibernate_page_bittst _hibernate_page_list_allocate _hibernate_page_list_count _hibernate_page_list_discard _hibernate_page_list_setall _hibernate_page_list_setall_machine _hibernate_processor_setup _hibernate_restore_phys_page _hibernate_set_page_state _hibernate_setup _hibernate_sum _hibernate_teardown _hibernate_vm_lock _hibernate_vm_unlock _hibernate_write_image _kern_close_file_for_direct_io _kern_open_file_for_direct_io _kern_write_file _mapping_hibernate_flush _memdSync _ml_mem_backoff_xfunc _svboffGo _svboffOn _svboffStim _svboffSync This email sent to site_archiver(a)lists.apple.com

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Re: Build kernel
by Garth Cummings 02 Jun '05

02 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Hi Sergey, On Jun 2, 2005, at 9:55 AM, Sergey Dolgopolov wrote: Regards, --gc __________________________________________________________________ Garth Cummings Apple Developer Technical Support gcummings(a)apple.com http://developer.apple.com/technicalsupport Spotlight on Innovation Worldwide Developers Conference 2005 June 6-10 in San Francisco http://developer.apple.com/wwdc _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com Hi! I download darwin source, but not understand how build/rebuild kernel? Where "make buildworld", "make buildkernel" as in FreeBSD? Whether is cvs to receive kernel update? I have a problem in definition of the USB device in Tiger 10.4.1/ Darwin 8.0.1 (in 10.4.0/8.0.0 USB device work fine) and I want rebuild a kernel. How i can make this? On Mac OS X, none of the USB support is in the kernel itself (xnu project). Instead it's in various kernel extensions, most of which are in the IOUSBFamily project. There is also a specific mailing list for USB issues: <http:// lists.apple.com/usb>. The Apple engineers who work on USB can be found on that list. smime.p7s

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Build kernel
by Sergey Dolgopolov 02 Jun '05

02 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.8) Gecko/20050511 Hi! I download darwin source, but not understand how build/rebuild kernel? Where "make buildworld", "make buildkernel" as in FreeBSD? Whether is cvs to receive kernel update? I have a problem in definition of the USB device in Tiger 10.4.1/Darwin 8.0.1 (in 10.4.0/8.0.0 USB device work fine) and I want rebuild a kernel. How i can make this? Thanks. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: 64-bit problem with VM statistics
by William Kucharski 02 Jun '05

02 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com I found your problem, and it's an interesting one. vm_size_t mac_pagesize; [ ... ] host_page_size(host_port, &mac_pagesize); The issue is that /usr/include/mach/ppc/vm_types.h defines vm_size_t as: #if defined(__ppc__) /* * For 32-bit PowerPC ABIs, the scalable types were * always based upon natural_t (unsigned int). * Because of potential legacy issues with name mangling, * we cannot use the stdint uintptr_t type. */ typedef natural_t vm_offset_t; typedef natural_t vm_size_t; #else /* __ppc64__ */ /* * For 64-bit PowerPC ABIs, we have no legacy name mangling * issues, so we use the stdint types for scaling these * types to the same size as a pointer. */ typedef uintptr_t vm_offset_t; typedef uintptr_t vm_size_t; #endif host_page_size(host_port, &mac_pagesize); the Darwin kernel does this: kern_return_t host_page_size( host_t host, vm_size_t *out_page_size) { if (host == HOST_NULL) return(KERN_INVALID_ARGUMENT); *out_page_size = PAGE_SIZE; return(KERN_SUCCESS); } Thus, two workarounds would be: William Kucharski kucharsk(a)mac.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… The problem lies here in your code and the fact that you have your project set to be compiled in 64-bit mode for G5s: What this means is if __ppc__ is defined, vm_size_t will be an unsigned int (size 4 bytes); if __ppc64__ is defined, vm_size_t will be a unintptr_t (size 4 bytes on PPC32, 8 bytes on PPC64.) The problem is that the kernel is NOT a 64-bit executable, and as such is not compiled with __ppc64__ set, so when you make this call from a 64-bit executable: I think you probably see the issue here; since the kernel thinks a vm_size_t is a four byte quantity but your 64-bit app thinks it's an eight byte quantity, the kernel will fill in the upper four bytes of the eight byte variable with the system page size and leave the rest of the eight byte variable untouched. Thus when the kernel tries to return 0x1000 (4096), your 64-bit app will instead see it as 0x100000000000, or 17592186044416 (!). Now your earlier wacky number of 281299054850211840 bytes doesn't really calculate out properly, as given this error you would then get 281299054850211840/17592186044416 = 15990 pages, or only 62M free, not the 4.4G or so you were theoretically expecting; if mac_pagesize were an automatic I'd blame garbage left over in the "low" four bytes of the variable, but since it's a global it was initialized as 0 so there IS no garbage in the low four bytes. 1) Compile 32-bit only 2) Declare mac_pagesize as a natural_t or unsigned int rather than a vm_size_t. (Obviously this would mean that mac_pagesize wouldn't agree with the man pages, but you've got to do what works.) This is why my earlier attempt worked fine; I didn't specify that gcc should specifically compile my app as a 64-bit application. The question is, what SHOULD happen in this case, and should there be an ADC tech note warning of this issue? According to the Darwin 64-bit conversion guide (<http:// developer.apple.com/documentation/Darwin/Conceptual/64bitPorting/ index.html>), "Only libSystem and the Accelerate framework are available to 64-bit developers. Higher level frameworks are 32-bit only." But is a call to host_page_size() really considered a "higher level framework?" I don't know the answer to that, so I'll leave it to the Apple folks who frequent this list to sort out (Quinn would probably be the expert here.) This email sent to site_archiver(a)lists.apple.com

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Re: kauth and creds in Darwin 8
by Sam Vaughan 02 Jun '05

02 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On 02/06/2005, at 5:18 AM, Mike Smith wrote: On May 25, 2005, at 9:48 PM, Sam Vaughan wrote: Sam, Hi Mike, crget(): kauth_cred_create(kauth_cred_get()) crfree(c): kauth_cred_rele(c) crdup(c): kauth_cred_create(c) crhold(c): kauth_cred_ref(c) I've already requested that the Radar bug I raised be closed. Thanks, Sam _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… crget(), crfree(), crdup() etc. have all been removed from the Darwin 8 kernel. The equivalent functions appear to be kauth_cred_alloc(), kauth_cred_rele(), kauth_cred_dup() etc. but they aren't exported. I assume that the kauth KPI is still a work in progress, especially considering there are declarations like kauth_cred_unref() in sys/kauth.h for which there's no kernel implementation. What are you trying to do with credentials? Many of the old abuses of the credential system are no longer possible (or necessary in many cases). I should have grepped the exported symbols for kauth_cred. It turns out that although kauth_cred_alloc and kauth_cred_dup aren't exported, a whole lot of other cred functions are. I'm pretty sure I've got what I need now with the following substitutions: As for the reason behind all this, CXFS uses credentials to manage permissions on RPCs issued by nodes with membership in the cluster. That code is common to all platforms, so I simply needed to create 10.4 replacements for the OS-specific stubs we already had in 10.3. This email sent to site_archiver(a)lists.apple.com

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Re: 64-bit problem with VM statistics
by Peter Bierman 01 Jun '05

01 Jun '05

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com What do you intend to do with the number when you have it? It is a meaningless number. There are rarely hard values like "there is 45 MB of free RAM." -pmb _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… At 2:28 PM -0500 5/31/05, Tony Scaminaci wrote: The following calculation of free memory (in bytes) Some amount larger than the "unused" RAM can usually be used without performance degradation. Some amount larger than the "phsyical" RAM can be usually used with a slight performance impact. This email sent to site_archiver(a)lists.apple.com

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