November 2006 - Darwin-kernel

Re: How to get the current process in kernel context?
by NAHieu 04 Nov '06

04 Nov '06

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:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=VdhebIMbRWLy993X0gs5bAz1hWpc5mJGq3QX8G5ye0fFbqygUyultUaA5prMTY7hfliWcql/ziUKsIPq8nC55WPIqnvHLxLjzH1nOepcZgbkoq/2BX/9/dTO+K+c6xSUPiSuwQgOWc2yHnfxaJyH4wAlaBoNi0aMEwmovSi+aAw= Nevermind, I found sys/proc.h. thanks H Hello, I want to get information about the process (such as its pathname) in the current kernel context. How can I do that in MacOSX? (I am on 10.4.8) Many thanks. H _______________________________________________ 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.… On 11/4/06, NAHieu <nahieu(a)gmail.com> wrote: This email sent to site_archiver(a)lists.apple.com

1 0

How to get the current process in kernel context?
by NAHieu 04 Nov '06

04 Nov '06

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:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=n+UM66V9Z+mn9D1SA2zVqA2WDe2lth2xzdzxeb+5ctA6IRF29gedugtJx28LG0AIuez+xQ5qvO1PzdK+QlOnuxqlc57QbhtCDl/QnmRW4EtcSRnlAVrygjk6+DqUKl/apHkvCsku5oaJcHpeFhhJG3FTxn8mChgRbYCbCUa90Zs= Hello, I want to get information about the process (such as its pathname) in the current kernel context. How can I do that in MacOSX? (I am on 10.4.8) Many thanks. H _______________________________________________ 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

1 0

Re: ctl_getenqueuespace?
by Terry Lambert 03 Nov '06

03 Nov '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On Nov 3, 2006, at 1:45 AM, Stephane wrote: It's incorrect in both the header and documentation: http://developer.apple.com/documentation/Darwin/Reference/KPI_Reference/ker… kern_control.h Bug report filed: (Problem ID: 4816011) --------- "Return Value You do not enqueue any data when you call this function... OK, this makes more sense. -- Terry _______________________________________________ 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.… On Nov 3, 2006, at 1:13 AM, Terry Lambert wrote: On Nov 2, 2006, at 6:09 AM, Stephane wrote: The "Return Value" description for the ctl_getenqueuespace API is wrong. It looks like to be a copy-paste from the enqueue calls. What is the correct description? It's an errno_t - I looked at both your linked documentation and the current releases source code, and it looks correct; why do you think it's incorrect? 0 - Data was enqueued to be read by the client. EINVAL - Invalid parameters." IMHO, this is a copy paste from the ctl_enqueuembuf description. FFR, the KPI documentation for this area is parsed out in "doc book" format from the header file, and the string "Return Value" is derived from the documentation element "@result". If you had referenced "@result in the header 'bsd/sys/kern_control.h' is wrong for ctl_getenqueuespace", the bug report would have ended up in the right place to get it fixed (which is the networking component, not the documentation component). I've moved things around with the bug report and renamed it, per the previous sentence. This email sent to site_archiver(a)lists.apple.com

1 0

Re: ctl_getenqueuespace?
by Stephane 03 Nov '06

03 Nov '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On Nov 3, 2006, at 1:13 AM, Terry Lambert wrote: On Nov 2, 2006, at 6:09 AM, Stephane wrote: It's incorrect in both the header and documentation: kern_control.h Bug report filed: (Problem ID: 4816011) --------- "Return Value You do not enqueue any data when you call this function... IMHO, this is a copy paste from the ctl_enqueuembuf description. _______________________________________________ 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 "Return Value" description for the ctl_getenqueuespace API is wrong. It looks like to be a copy-paste from the enqueue calls. http://developer.apple.com/documentation/Darwin/Reference/ KPI_Reference/kern_control/CompositePage.html#HeaderDoc_functions What is the correct description? It's an errno_t - I looked at both your linked documentation and the current releases source code, and it looks correct; why do you think it's incorrect? 0 - Data was enqueued to be read by the client. EINVAL - Invalid parameters." This email sent to site_archiver(a)lists.apple.com

1 0

Re: ctl_getenqueuespace?
by Terry Lambert 03 Nov '06

03 Nov '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On Nov 2, 2006, at 6:09 AM, Stephane wrote: It's incorrect in both the header and documentation: http://developer.apple.com/documentation/Darwin/Reference/KPI_Reference/ker… kern_control.h Bug report filed: (Problem ID: 4816011) --------- -- Terry _______________________________________________ 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 "Return Value" description for the ctl_getenqueuespace API is wrong. It looks like to be a copy-paste from the enqueue calls. What is the correct description? It's an errno_t - I looked at both your linked documentation and the current releases source code, and it looks correct; why do you think it's incorrect? This email sent to site_archiver(a)lists.apple.com

1 0

ctl_getenqueuespace?
by Stephane 02 Nov '06

02 Nov '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com It's incorrect in both the header and documentation: kern_control.h Bug report filed: (Problem ID: 4816011) --------- What is the correct description? _______________________________________________ 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 "Return Value" description for the ctl_getenqueuespace API is wrong. It looks like to be a copy-paste from the enqueue calls. http://developer.apple.com/documentation/Darwin/Reference/ KPI_Reference/kern_control/CompositePage.html#HeaderDoc_functions This email sent to site_archiver(a)lists.apple.com

1 0

Re: cp creates directory with different permissions -- then reverts them
by Quinn 02 Nov '06

02 Nov '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com This also looks very easy: Since items with names beginning in the dot "." are hidden, simply prefix the item's name with a "." while you are scribbling, and then when you're done scribbling, rename it, removing the "." prefix. S+E -- 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: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… At 18:09 -0400 1/11/06, Jerry Krinock wrote: Should that do it, or am I oversimplifying? Historically the Finder has tracked file system objects by their CNID (for Mac folks, think "dir ID or file ID"; for UNIX folks, think "inode"), which undermines this approach because the rename is not creating a new FS object but changing metadata (the name) on an existing FS object. However, my guess is that this would work with the Mac OS X Finder, which is much more name centric. Still, the only way to be sure is to try. It's still better, IMHO, to do your work in an entirely different location if that's possible. Traditional Mac OS semantics allow you to ask for a temporary directory on any volume (that is, FSFindFolder takes a "on which volume" parameter). There's no guarantee you'll get one (for example, you typically won't get one on a server volume), but it's best to ask and then fall back to working in the same directory as the destination. Another nice attribute of using a temporary directory is that, if something goes wrong, the junk is left in the temporary directory, where it can be easily identified and cleaned up. This email sent to site_archiver(a)lists.apple.com

1 0

Re: cp creates directory with different permissions -- then reverts them
by Michael Smith 02 Nov '06

02 Nov '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On Nov 1, 2006, at 2:09 PM, Jerry Krinock wrote: on 06/10/31 5:40, Quinn at eskimo1(a)apple.com wrote: One approach I've seen for this is to do the scribbling (writing, copying, changing of permissions, etc.) somewhere hidden on the same file system and then when that's finished move the item to the Finder-visible location. None of these seem like showstoppers to me... = Mike _______________________________________________ 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 13:50 -0500 30/10/06, Michael Cashwell wrote: In general, this is the best approach. This also looks very easy: Since items with names beginning in the dot "." are hidden, simply prefix the item's name with a "." while you are scribbling, and then when you're done scribbling, rename it, removing the "." prefix. Should that do it, or am I oversimplifying? The only arguments against this approach that I can think of at this hour are: - some filesystems (but not many, to be honest) can't deal with any sort of lengthy filename starting with a dot. - from a robustness perspective, having a single place where you write temp files means that if your app crashes and restarts, you can reap stray temporary items on a per-volume basis, rather than leaving invisible turds lying all over the volume - other systems (Windows) will see these files if the directory is exported This email sent to site_archiver(a)lists.apple.com

1 0

Re: Getting the current PID inside kext?
by Quinn 02 Nov '06

02 Nov '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Yes. S+E -- 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: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… At 10:37 -0800 31/10/06, Rick Mann wrote: Since FILEOP are guaranteed to have a valid current process, this should be okay, right? This email sent to site_archiver(a)lists.apple.com

1 0

Re: cp creates directory with different permissions -- then reverts them
by Jerry Krinock 01 Nov '06

01 Nov '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Thread-index: Acb+Cs0NC5diJGn+EduNFgAWy6NyrA== Thread-topic: cp creates directory with different permissions -- then reverts them User-agent: Microsoft-Entourage/11.2.5.060620 on 06/10/31 5:40, Quinn at eskimo1(a)apple.com wrote: > At 13:50 -0500 30/10/06, Michael Cashwell wrote: >> One approach I've seen for this is to do the scribbling (writing, >> copying, changing of permissions, etc.) somewhere hidden on the same >> file system and then when that's finished move the item to the >> Finder-visible location. > > In general, this is the best approach. This also looks very easy: Since items with names beginning in the dot "." are hidden, simply prefix the item's name with a "." while you are scribbling, and then when you're done scribbling, rename it, removing the "." prefix. Should that do it, or am I oversimplifying? Jerry _______________________________________________ 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

1 0