March 2015 - Darwin-kernel - lists.apple.com

Xcode installation XNU from xnu-2050.18.24
by Prokash Sinha 11 Mar '15

11 Mar '15

On a VM when I try to install Xcode 4.3.3 on Lion (osx is at 10.7.5), It tries to install mobile device framework and fails to install Xcode. Anybody seen this ? Any workaround ? Pro _______________________________________________ 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: https://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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XNU from xnu-2050.18.24
by Prokash Sinha 11 Mar '15

11 Mar '15

> On 04 Mar 2015, at 06:34, Prokash Sinha <email@hidden> wrote: > > Hello, > > I’m new to building XNU. So I was following the instructions from Mac OSX and iOS internals book - page 300. What about: http://shantonu.blogspot.de/ Best regards Michael _______________________________________________ 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: https://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: Using XPC for Interprocess Communication
by Quinn "The Eskimo!" 11 Mar '15

11 Mar '15

On 10 Mar 2015, at 03:18, Arjun SM <arjun.sm(a)gmail.com> wrote: > Is it possible to give a provision such that only intended Clients can connect to my Server and not every independent process who knows the service name that is advertised in launchd.plist ? Not in the launchd space. One option is to get the pid from the XPC connection (via NSXPCConnection's processIdentifier property), build a code signing code ref from that (SecCodeCopyGuestWithAttributes), and check various code signing requirements from there (for example, you could check that it was signed by your Developer ID). It's not perfect though; if any of your code loads a plug-in, that would also get access. Ultimately this goal is very hard to reach on an open system like OS X. Share and Enjoy -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Relations, Developer Technical Support, Core OS/Hardware _______________________________________________ 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: https://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: Using XPC for Interprocess Communication
by Arjun SM 10 Mar '15

10 Mar '15

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Re: Using XPC for Interprocess Communication
by Quinn "The Eskimo!" 04 Mar '15

04 Mar '15

On 3 Mar 2015, at 22:48, Arjun SM <arjun.sm(a)gmail.com> wrote: > My Question is Can we use XPC API's independently of XPC Services not as a helper tool ? Yes. It's perfectly valid to create a launchd daemon or agent that vends an XPC service via the MachServices property of its launchd property list file. > Can I use XPC in this manner where in multiple independent process connects to my server and get serviced ? Yes. If you vend your service from a launchd agent, it'll only be available to clients in a particular login context. If you make it a launchd daemon, it'll be available to all clients (subject to sandboxing restrictions). In the latter case the clients will have to set XPC_CONNECTION_MACH_SERVICE_PRIVILEGED. Share and Enjoy -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Relations, Developer Technical Support, Core OS/Hardware _______________________________________________ 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: https://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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Using XPC for Interprocess Communication
by Arjun SM 04 Mar '15

04 Mar '15

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Re: Building XNU from xnu-2050.18.24
by Michael Tuexen 04 Mar '15

04 Mar '15

> On 04 Mar 2015, at 06:34, Prokash Sinha <prokash(a)garlic.com> wrote: > > Hello, > > I’m new to building XNU. So I was following the instructions from Mac OSX and iOS internals book - page 300. What about: http://shantonu.blogspot.de Best regards Michael > > I checked if gcc or cc exists or not. They exist in /usr/bin. Also I installed the Xcode. > > Since the instruction from the book says we need to build basically four prerequisites - > > 1) cxxfilt-11 /*11 being the latest I found online */ > > 2) DTrace > > 3) Kext_tools > > 4) bootstrap_cmds > > I started with cxxfilt. > > I don’t have /usr/include, so build fails for not finding stdio.h or other standard header file. > > If I include the include path from the Xcode’s sdks, then some files gets compiled, some fails. > > DTrace is not a problem I suppose. > > I could not find Kext_tools tar ball to bring down and build. > > So is there someone who can kindly point me to the right direction. > > It could be that my build tools are not installed properly? (But I tested simple c program being built using gcc or cc using cmd line ). > Could it be because of CLANG/LLVM getting into the way ? > > Thanks in advance! > -prokash > _______________________________________________ > 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: > https://lists.apple.com/mailman/options/darwin-kernel/michael.tuexen%40lurc… > > This email sent to michael.tuexen(a)lurchi.franken.de _______________________________________________ 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: https://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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Building XNU from xnu-2050.18.24
by Prokash Sinha 04 Mar '15

04 Mar '15

Hello, I’m new to building XNU. So I was following the instructions from Mac OSX and iOS internals book - page 300. I checked if gcc or cc exists or not. They exist in /usr/bin. Also I installed the Xcode. Since the instruction from the book says we need to build basically four prerequisites - 1) cxxfilt-11 /*11 being the latest I found online */ 2) DTrace 3) Kext_tools 4) bootstrap_cmds I started with cxxfilt. I don’t have /usr/include, so build fails for not finding stdio.h or other standard header file. If I include the include path from the Xcode’s sdks, then some files gets compiled, some fails. DTrace is not a problem I suppose. I could not find Kext_tools tar ball to bring down and build. So is there someone who can kindly point me to the right direction. It could be that my build tools are not installed properly? (But I tested simple c program being built using gcc or cc using cmd line ). Could it be because of CLANG/LLVM getting into the way ? Thanks in advance! -prokash _______________________________________________ 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: https://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: Identifying an XPC "parent" process
by Quinn "The Eskimo!" 04 Mar '15

04 Mar '15

On 2 Mar 2015, at 08:21, Andrew Keller <andrew(a)kellerfarm.com> wrote: > Activity Monitor clearly knows this information [...] I researched this a while back as part of a DTS incident. The system has a 'responsibility' mechanism that it uses to track these relationships. The API for this is not public. Share and Enjoy -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Relations, Developer Technical Support, Core OS/Hardware <snrx://Request/600057819> <rdar://problem/14860959> _______________________________________________ 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: https://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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Identifying an XPC "parent" process
by Andrew Keller 02 Mar '15

02 Mar '15

Hello all, I’m not sure if this is the correct list, but I figure I’ll start somewhere. I’m writing a program that collects activity statistics on other running programs (in particular, network usage statistics). At the moment, I’m working on the user interface. I’d like to display processes with a helpful human-understandable process name. For example, instead of “Safari Web Content”, I want “Safari”. One could imagine some heuristics that could massage the names into what I want, but I want something less fragile. Activity Monitor clearly knows this information, so the knowledge must exist somewhere. Long story short, I’m having trouble identifying the process that initiated an XPC service. Since XPC is governed by launchd, I figure it wouldn’t hurt to ask here. Does XPC have any touch points in the kernel? Might the kernel know this information? See also: http://stackoverflow.com/questions/24260518/how-does-osx-activity-monitor-m… Thanks, - Andrew _______________________________________________ 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: https://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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