September 2008 - Darwin-dev

Re: Safe Boot with Local-Root driver on Leopard?
by Soren Spies 02 Sep '08

02 Sep '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Aug 29, 2008, at 20:28, Duane Murphy wrote: Yeah, there are some known issues with Safe Boot and Boot!=Root. :( I need to do one more test to be sure, but it seems to be the link between everything. The final test I need to do is with the kext installed on a non-boot! =root system. I suspect that will clear up the problem. -- Soren Spies CoreOS::IOTeam _______________________________________________ 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 did some more testing and I think it's not the kext, but rather that I am safe booting on a boot!=root disk. This email sent to site_archiver(a)lists.apple.com

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Memory management and mmap
by Dave Keck 02 Sep '08

02 Sep '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:mime-version:content-type; bh=uu19sQqxFBh2dvOM3yabn59ebCOhSQy+R9UyTIS38oU=; b=l0sAB8fWHBW7/I6yqzHwOkSd6UhvZ8aigePoScNsXq3YUDYxg1pBaVtXDwuzp8h+cU NJ2GfWQx5fmlV5C0cp/HD7/LPIpEFd06pnBeEpYCMsiH8tqb0yTeKQY8oVZKQBJ/7eT3 UFEGNHqMaatPhArL1JYMaa1egzSukcN3C0PcY= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:mime-version:content-type; b=C7mTAzs3BCzqGQC+FzYrVRlTky+9F6HDCuzy+SKpj1orPcuJPGVsnaiVBNLkEXyCud sM0Bbnbq3EVYpLzLRpc46g2Wh3gk+sqMG7G9NrAvAYZ8vhTI5SiqXU7Zu3vGIPljcvBV bpf0favYVZbzXBClJKKWoGefAsCoejeWWOIrg= _______________________________________________ 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: change darwin ports
by Jonas Maebe 02 Sep '08

02 Sep '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On 02 Sep 2008, at 15:27, Otavio Rodrigues wrote: Is there any way to chage the ports darwin uses? I'm having troubles, since Windows Media Services uses the same ports. The Darwin Streaming Server list is here: http://lists.apple.com/mailman/listinfo/streaming-server-users Jonas _______________________________________________ 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: change darwin ports
by Jean-Daniel Dupas 02 Sep '08

02 Sep '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Le 2 sept. 08 à 16:27, Otavio Rodrigues a écrit : Hi, Is there any way to chage the ports darwin uses? I'm having troubles, since Windows Media Services uses the same ports. _______________________________________________ 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… thanks May I ask you what you think Darwin is ? To me, it's a Unix OS developped and used by Apple as the foundation for Mac OS X and iPhone OS. This email sent to site_archiver(a)lists.apple.com

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change darwin ports
by Otavio Rodrigues 02 Sep '08

02 Sep '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:mime-version:content-type:content-transfer-encoding :content-disposition; bh=CnL0hdvCAu1bM8nUclA3dMwRRqnnO1nLyYZZTPNnV4c=; b=hxHnATLId+BXEFutIOtNmvu/gxOMd/q09/1olWKuC1j7FIS68S8p6nWXR7LzXnzLAD AFno2td8AIxr4h41bmTc0ZpZn3b+/XdcNpCYULlle1sj1ttb6g9leY9m967zU03ZGVsU dAG0h4+ikJMRNK7gXrd9ZAlhuM7I0wIpwgfX4= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:mime-version:content-type :content-transfer-encoding:content-disposition; b=CXX+U1gL6TyLwwdCkxHSpsQ2HffZWJiN9cTm8xpVLrEYC6ZzR1LW46zlsYbUcyWfRc TWr2xUmkgBEJ6LTIchgIiqNq83O3zZaWvGXg460uHpFx25GMa3RIhTtXf31JNX4Mbarz OsdDZI1bKTZIImJPY0LDc87HtHyVBp6M9pY+I= Hi, Is there any way to chage the ports darwin uses? I'm having troubles, since Windows Media Services uses the same ports. thanks best regards otavio -- _______________________________________________ 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: select() and svn 1.5 [partially solved]
by Luke Daley 02 Sep '08

02 Sep '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On 02/09/2008, at 11:38 PM, Jean-Daniel Dupas wrote: Le 2 sept. 08 à 14:58, Luke Daley a écrit : On 02/09/2008, at 10:18 PM, Jean-Daniel Dupas wrote: » nm /usr/lib/libSystem.dylib | grep __syscall 000441d0 t ___syscall #include <libc.h> #include <mach-o/nlist.h> typedef int (*__syscall_t)(quad_t number, ...); return 0; } Wow, scary :) Looking at nlist.h… struct nlist { union { #ifndef __LP64__ char *n_name; /* for use when in-core */ #endif int32_t n_strx; /* index into the string table */ } n_un; uint8_t n_type; /* type flag, see below */ uint8_t n_sect; /* section number or NO_SECT */ int16_t n_desc; /* see <mach-o/stab.h> */ uint32_t n_value; /* value of this symbol (or stab offset) */ }; Does that mean that n_name doesn't exist on 64 bit architectures? -- LD. _______________________________________________ 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's very clearly there, why can't my code find it? Because it is an internal symbol and it is not exported (note the lower case 't' in front of the symbol name). Hrm. I have to call it, what do I do? As you are already using interposition, another feature that should be avoid will not hurt ;-) int main(int argc, const char * argv[]) { struct nlist nl[1]; bzero(&nl, sizeof(struct nlist) * 2); nl[0].n_un.n_name = (char *)"___syscall"; if (nlist("/usr/lib/libSystem.dylib", nl) < 0 || nl[0].n_type == N_UNDF) { fprintf(stderr, "nlist(%s, %s) failed\n", "/usr/lib/libSystem.dylib", nl[0].n_un.n_name); return -1; } __syscall_t fcn = (__syscall_t)nl[0].n_value; See man nlist(3) for details. I think there might be a problem with it though. I get "error: ‘union <anonymous>’ has no member named ‘n_name’" This email sent to site_archiver(a)lists.apple.com

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Re: select() and svn 1.5 [partially solved]
by Jean-Daniel Dupas 02 Sep '08

02 Sep '08

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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Re: select() and svn 1.5 [partially solved]
by Luke Daley 02 Sep '08

02 Sep '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On 02/09/2008, at 10:18 PM, Jean-Daniel Dupas wrote: » nm /usr/lib/libSystem.dylib | grep __syscall 000441d0 t ___syscall Hrm. I have to call it, what do I do? -- LD. _______________________________________________ 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's very clearly there, why can't my code find it? Because it is an internal symbol and it is not exported (note the lower case 't' in front of the symbol name). This email sent to site_archiver(a)lists.apple.com

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Re: Valgrind alternative?
by Brian Bergstrand 02 Sep '08

02 Sep '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Sep 2, 2008, at 2:09 PM, Jesus wrote: apple-valgrind-app my-exec [my options] Thank you, http://clang.llvm.org/StaticAnalysisUsage.html Works pretty well on the few apps I've run it on. On Sep 2, 2008, at 1:11 PM, Jesus wrote: I have also read that someone has ported valgrind: http://www.squarefree.com/2007/09/19/valgrind-coming-to-mac/ : Is that true? Brian Bergstrand <http://www.bergstrand.org/brian/> PGP Key ID: 0xB6C7B6A2 Brian Bergstrand <http://www.bergstrand.org/brian/> PGP Key ID: 0xB6C7B6A2 _______________________________________________ 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's been almost a year since that blog post and 10 months since Leopard was released. You asked for alternatives and for now it looks like CLANG is as close as you can get. I think scan-build is not a good alternative. I am looking for something like: and then to get a report with all the memory leaks, all the buffer over-flow, etc. It is not just a leak detector, it also informs you the line of code where something wrong happend, where the memory was reserved, what kind of violation, etc .. On Tue, Sep 2, 2008 at 12:45 PM, Brian Bergstrand <brian(a)classicalguitar.net > wrote: Apple has its own static analyzer from the LLVM project. CLANG: I read some old posts about valgrind. It seems that Apple is not interested in porting this application and it is also difficult to port by the valgrind team. Is there any sensible alternative to find memory leak, or memory corruptions, etc for console applications? Instruments and Shark do not fit properly for this purpose. This email sent to site_archiver(a)lists.apple.com

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Re: select() and svn 1.5 [partially solved]
by Jean-Daniel Dupas 02 Sep '08

02 Sep '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Le 2 sept. 08 à 13:46, Luke Daley a écrit : On 01/09/2008, at 3:22 AM, Jordan K. Hubbard wrote: When in doubt… RTFM I can't believe I missed that. Anywho, still doesn't solve it completely because now I get … Undefined symbols: "___syscall", referenced from: I am building for only x86_64 at this point. » nm /usr/lib/libSystem.dylib | grep __syscall 000441d0 t ___syscall _______________________________________________ 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… Well, clearly the 64 bit interpositioning case is the one that is biting you, and if you've already clarified that all the select() variants are STILL converging on your interpositioning routines even in the 64 bit ABI case, then I guess you need to look very carefully at your interpositioning code and see if you have any 32 vs 64 bit size issues anywhere, that's the only thing I can think of (getting a 64 bit value in and truncating it to 32 bits then passing it on to a syscall which expects 64 bits would do it). » man syscall … The __syscall form should be used when one or more of the parameters is a 64-bit argument to ensure that argument alignment is correct … It's very clearly there, why can't my code find it? Because it is an internal symbol and it is not exported (note the lower case 't' in front of the symbol name). This email sent to site_archiver(a)lists.apple.com

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