June 2007 - Darwin-dev - lists.apple.com

Re: Firewire remote debugging
by Alexander von Below 06 Jun '07

06 Jun '07

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can I get the symbol's size from a Mach-O file?
by 周章林 06 Jun '07

06 Jun '07

site_archiver(a)lists.apple.com Delivered-To: Darwin-dev(a)lists.apple.com Dkim-signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:mime-version:content-type; b=OjO2H0WKcG8wWD5GJP+GAxTeLUvaeMfdzQos9oO2jCO67g07gUOWZsIUHeBrqLhjn2PHX8jPTnQf0HmQOE2BVFLtIo51hzoftMjv5Rgh5PT8uDYdJVN118wrvt7pniohginQL+vhP34NqCDQJI4JPhAFm9F/StQ1JATFCgxhkwE= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:mime-version:content-type; b=WxJSLLObNIiMieXz1PHHZfcuR692y1Hn+R8Pc/f2YXGmDbUGp+vlyJaK3L8doA7TqBSj8j6TJ3/ZXnzqIXMBZPq/n9PY/UMcYaNA91XK/7KcA/JRsG5Vszhb8obah4pEg5ZhzTVUI3PcfAklzPEPpjKpPrC48WTMdnwTDdIj2FQ= _______________________________________________ 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: How to be an apple developer without a Mac?
by Ian H Stewart 05 Jun '07

05 Jun '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com I have an old PowerBook G4 Ti if you want make an offer. It is in great working condition, though the palm rest does have paint issues. Ian On Jun 4, 2007, at 11:24 AM 6/4/07, Corey O'Connor wrote: Another approach, depending on the type of development need to be done is ask to have remote access on someone else's machine. I say "depending on type of development", since if you are only doing command line development, then it is easy to provide a work area without obstructing the main user, and I have already done that for a developer, though proving UI access requires that the main user is not needing the current to use their system at that point in time. While I haven't personally tried this, the manual for OSXvnc (http://www.redstonesoftware.com/products/vine/server/index.html) mentions it supports multiple simultaneous GUI logins. One for each user. Sounds like the basic idea is that each user must be logged in at the same time with Fast User Switching enabled. Then the OS X gui still operates, and thus VNC, even though the user might be in the background and not the active GUI session. -- -Corey O'Connor _______________________________________________ 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/ian%40nyro.com This email sent to ian(a)nyro.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… On 6/4/07, Andre-John Mas <ajmas(a)sympatico.ca> wrote: This email sent to site_archiver(a)lists.apple.com

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RE: /usr/bin/install
by Bernd Jagla 05 Jun '07

05 Jun '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Thread-index: AcenZ4p4yCM6TNHGSe6O3gPwddytnwABk/nQ Hi Martin, Interesting..., but ulimit -s shows 8192. Any other idea? Thanks a lot Bernd |-----Original Message----- |From: Martin Costabel [mailto:costabel@wanadoo.fr] |Sent: Tuesday, June 05, 2007 7:49 AM |To: Bernd Jagla |Cc: darwin-dev(a)lists.apple.com |Subject: Re: /usr/bin/install | |Bernd Jagla wrote: |> Hi, |> |> |> |> I want to use /usr/bin/install but I get a Bus error instead when |> issuing install -c file1 file2 |> |> There is a EXC_BAD_ACCESS exception, KERNEL_PROTECTION_FAILURE. | |One standard possibility to make /usr/bin/install crash is to limit your |stacksize to something like 1 MB. People who were around at the time of |MacOSX 10.1 or earlier sometimes have | | limit stack 1000 | |or the bash equivalent ulimit -s 1000 in their shell startup scripts, |because at that time the default was 512 kB (now 8 MB). Check your |limits with "limit -s" (tcsh) or "ulimit -s" (bash). | |-- |Martin _______________________________________________ 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: /usr/bin/install
by Martin Costabel 05 Jun '07

05 Jun '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Thunderbird 1.5.0.12 (Macintosh/20070509) Hi, limit stack 1000 -- Martin _______________________________________________ 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… Bernd Jagla wrote: I want to use /usr/bin/install but I get a Bus error instead when issuing install –c file1 file2 There is a EXC_BAD_ACCESS exception, KERNEL_PROTECTION_FAILURE. One standard possibility to make /usr/bin/install crash is to limit your stacksize to something like 1 MB. People who were around at the time of MacOSX 10.1 or earlier sometimes have or the bash equivalent ulimit -s 1000 in their shell startup scripts, because at that time the default was 512 kB (now 8 MB). Check your limits with "limit -s" (tcsh) or "ulimit -s" (bash). This email sent to site_archiver(a)lists.apple.com

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Re: NKE - Socket filter - get local address problem.
by Erez Kaplan 05 Jun '07

05 Jun '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Ryan, Erez On Jun 5, 2007, at 6:16 AM, Ryan McGann wrote: Ryan On Jun 3, 2007, at 9:36 PM, Erez Kaplan wrote: Ryan, I have full code control over "my userland application". Erez On Jun 3, 2007, at 11:30 PM, Ryan McGann wrote: HOWEVER - I am unable to obtain the local address at this point. I have used err = sock_getsockname(so, (struct sockaddr *) &local, (int)&len); but I keep getting <0.0.0.0> as a result. Erez, Ryan _______________________________________________ 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… Great, I will try both options. For the time being I forced a bind zero from my user-land application on the outgoing connection, so I now get the local port in the connect_out callback of the kernel. The way this is usually performed is to use a sysctl or a kern_ctl socket that connects to your kernel extension. If you are unfamiliar with kern_ctl sockets, in userspace they work just like regular sockets; you create them like socket( AF_INET, SOCK_DGRAM, SYSPROTO_CONTROL ); You can then write data to them, or simply call setsockopt() on it to communicate with your kernel extension. We implemented a special setsockopt that tells our kernel extension the userland process ID; e.g. pid_t thePID = getpid(); setsockopt( kernsock, SYSPROTO_CONTROL, kSetControllerProcessID, &thePID, sizeof( thePID ) ); In your kernel extension you can determine the process ID of the process that is making the connect() using proc_selfpid(). If the process ID returned by proc_selfpid is your userland process ID, then you can ignore the connect() request. Alternatively, you can send the local port number down using the setsockopt. My NKE kext needs to ignore redirection if request is from "my userland application". i.e redirect all applications accept mine. optionally is there another call back where I can examine both addresses and change the <to> prior to bind? The problem is that the kernel performs an implicit bind when the socket is connected if no local name is assigned to the socket already. Your NKE connect_out callback is being called when the client application calls connect() (inside the syscall basically), so unless the client application performs a bind() first (which is rarely done for outbound connects) the socket will not have a local address assigned to it. The kernel will assign one later during the actual connect. You can obtain the local address later inside of sf_notify, when you get a notification that the socket has gone into the connected state, but not before (as far as I know). In short, there is no way to both redirect the socket (which can only be done in the connect_out callback) and use the source ip:port. Can you explain why you need the source ip:port? This email sent to site_archiver(a)lists.apple.com

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Re: NKE - Socket filter - get local address problem.
by Ryan McGann 05 Jun '07

05 Jun '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Ryan On Jun 3, 2007, at 9:36 PM, Erez Kaplan wrote: Ryan, I have full code control over "my userland application". Erez On Jun 3, 2007, at 11:30 PM, Ryan McGann wrote: HOWEVER - I am unable to obtain the local address at this point. I have used err = sock_getsockname(so, (struct sockaddr *) &local, (int)&len); but I keep getting <0.0.0.0> as a result. Erez, Ryan _______________________________________________ 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… The way this is usually performed is to use a sysctl or a kern_ctl socket that connects to your kernel extension. If you are unfamiliar with kern_ctl sockets, in userspace they work just like regular sockets; you create them like socket( AF_INET, SOCK_DGRAM, SYSPROTO_CONTROL ); You can then write data to them, or simply call setsockopt() on it to communicate with your kernel extension. We implemented a special setsockopt that tells our kernel extension the userland process ID; e.g. pid_t thePID = getpid(); setsockopt( kernsock, SYSPROTO_CONTROL, kSetControllerProcessID, &thePID, sizeof( thePID ) ); In your kernel extension you can determine the process ID of the process that is making the connect() using proc_selfpid(). If the process ID returned by proc_selfpid is your userland process ID, then you can ignore the connect() request. Alternatively, you can send the local port number down using the setsockopt. My NKE kext needs to ignore redirection if request is from "my userland application". i.e redirect all applications accept mine. optionally is there another call back where I can examine both addresses and change the <to> prior to bind? The problem is that the kernel performs an implicit bind when the socket is connected if no local name is assigned to the socket already. Your NKE connect_out callback is being called when the client application calls connect() (inside the syscall basically), so unless the client application performs a bind() first (which is rarely done for outbound connects) the socket will not have a local address assigned to it. The kernel will assign one later during the actual connect. You can obtain the local address later inside of sf_notify, when you get a notification that the socket has gone into the connected state, but not before (as far as I know). In short, there is no way to both redirect the socket (which can only be done in the connect_out callback) and use the source ip:port. Can you explain why you need the source ip:port? This email sent to site_archiver(a)lists.apple.com

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/usr/bin/install
by Bernd Jagla 04 Jun '07

04 Jun '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Thread-index: AcenAfHYKL1uZS5OQneMm8U+BjjE3Q== _______________________________________________ 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: How to be an apple developer without a Mac?
by Alexander von Below 04 Jun '07

04 Jun '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Am 05.06.2007 um 00:41 schrieb Graham J Lee: Alex _______________________________________________ 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… The Apple compatibility labs, if you live within spitting distance of Cupertino. /not at all a waste of money to us foreign ADC types 1) Not for the original poster. The $499 will buy him a real Mac on eBay 2) For us foreign types: You can schedule an ssh or ARD session at the compatibility lab! So if you do not depend on hardware, the ADC Compatibility lab can be "virtually all yours" This email sent to site_archiver(a)lists.apple.com

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Re: How to be an apple developer without a Mac?
by Graham J Lee 04 Jun '07

04 Jun '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On 4 Jun 2007, at 18:34, Terry Simons wrote: Cheers, Graham. _______________________________________________ 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… Sourceforge used to have test systems that people could access to test their sourceforge projects on, but I think they did away with this. Perhaps there is another organization out there with something similar. The Apple compatibility labs, if you live within spitting distance of Cupertino. /not at all a waste of money to us foreign ADC types This email sent to site_archiver(a)lists.apple.com

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