June 2004 - Darwin-kernel - lists.apple.com

Re: Timers in my NKE
by Matt Jaffa 17 Jun '04

17 Jun '04

hmmm I found a pretty good method for accomplishing my purposes, unless it isn't a good way. use IOCreateThread to create the thread and run it, then inside the thread function I call IOSleep(timetosleep); then so the work after the thread wakes up. If I read correctly these are just wrappers for the mach_threads, and I guess IOKit knows threads better to me, so I will let that API take care of it, as long as this API is going to be staying along time. I don't really care if the thread wakes up anywhere from 1 to 10000 milliseconds off from what I told it to sleep, so this method should work for me, unless there is a suggested and recommended way. Matt On Jun 17, 2004, at 12:30 PM, Godfrey van der Linden wrote: G'day Justin, You are right it is #include <kern/thread_call.h> // And can be found in xnu/osfmk/kern It sort of depends on what you want to do with the timeou()t. But for regularly scheduled timeouts I prefer using thread_call_enter directly as it is lighter weight and closer to my requirements. Godfrey On Jun 17, , at 10:38, Justin Walker wrote: On Jun 17, 2004, at 10:11, Godfrey van der Linden wrote: Check out <xnu/kern/thread_call.h> Huh? I don't find such a file. What about a 'timeout()' call? _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored. _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: File Monitoring under Mac OS X
by Krishna Monian 17 Jun '04

17 Jun '04

I did get the patch. I am not too sure on the application procedure though (being new to the Mac). Could you give me some guidelines on the installation procedure. I am switching over to the FAM mailing list. I didn't realise that there was one. We can continue this discussion on it, as you said. Thanks Krishna --- Olivier Kaloudoff <kalou(a)kalou.net> wrote: > On Thu, 17 Jun 2004, Krishna Monian wrote: > > >Hi, > > > >I have been trying to get the FreeBSD port of FAM > to > >run on Mac OS X 10.3.4 (Panther). However, I > haven't > >had any luck so far. > > > >Could someone guide me on how I should go about > doing > >this. I am new to the Mac, so a detailed > description > >will be helpful. > > > >From what I have figured so far, I need to install > the > >mntent extension. I am not sure whether this is > >possible under the Mac or not. Help on this will > also > >be appreciated. > > The mntent problem can be fixed, as said in the > following > post: > > http://oss.sgi.com/archives/fam/2002-11/msg00013.html > > Can you try to apply this, and report success / > failure ? > > Maybe we should switch to the FAM mailing list ? > > > Olivier > _______________________________________________ > darwin-kernel mailing list | > darwin-kernel(a)lists.apple.com > Help/Unsubscribe/Archives: > http://www.lists.apple.com/mailman/listinfo/darwin-kernel > Do not post admin requests to the list. They will be > ignored. > > __________________________________ Do you Yahoo!? New and Improved Yahoo! Mail - Send 10MB messages! http://promotions.yahoo.com/new_mail _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: File Monitoring under Mac OS X
by Olivier Kaloudoff 17 Jun '04

17 Jun '04

On Thu, 17 Jun 2004, Krishna Monian wrote: >Hi, > >I have been trying to get the FreeBSD port of FAM to >run on Mac OS X 10.3.4 (Panther). However, I haven't >had any luck so far. > >Could someone guide me on how I should go about doing >this. I am new to the Mac, so a detailed description >will be helpful. > >From what I have figured so far, I need to install the >mntent extension. I am not sure whether this is >possible under the Mac or not. Help on this will also >be appreciated. The mntent problem can be fixed, as said in the following post: http://oss.sgi.com/archives/fam/2002-11/msg00013.html Can you try to apply this, and report success / failure ? Maybe we should switch to the FAM mailing list ? Olivier _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: File Monitoring under Mac OS X
by Krishna Monian 17 Jun '04

17 Jun '04

Hi, I have been trying to get the FreeBSD port of FAM to run on Mac OS X 10.3.4 (Panther). However, I haven't had any luck so far. Could someone guide me on how I should go about doing this. I am new to the Mac, so a detailed description will be helpful. >From what I have figured so far, I need to install the mntent extension. I am not sure whether this is possible under the Mac or not. Help on this will also be appreciated. Thanks in advance. Krishna Monian --- Olivier Kaloudoff <kalou(a)kalou.net> wrote: > >Hi All, > > Hi Sir Monian, > > >I am currently trying to write a file logger, which > >logs every single file access (read, write, delete) > on > >a specified volume. > > > >Could someone brief me on what would the best way > be > >to go about doing this. Would it have to be in > kernel > >mode or can it be done in user mode? > > You might take a look at SGI FAM, the File > Alteration Monitor, > that is already available for many flavors of unix, > including > *BSD. Some posts in the forums show that port for > osx has been > at least tried if not already succeeded; > > http://oss.sgi.com/projects/fam/ > > What is FAM? > > FAM, the File Alteration Monitor, provides an API > that applications can > use to be notified when specific files or > directories are changed. > > FAM comes in two parts: fam, the daemon that listens > for requests and > delivers notification, and libfam, a library that > client applications can > use to communicate with fam. > > FAM was originally written for IRIX in 1989 by Bruce > Karsh, and was > rewritten in 1995 by Bob Miller. This open-source > release of FAM builds > and runs on both Linux and IRIX, and is almost > identical to the version of > FAM that ships with IRIX 6.5.x. > > > > Maybe would be worth to join the port effort ? > > > > Regards, > > > > Olivier Kaloudoff > LUG Linux Azur > http://www.linux-azur.org > __________________________________ Do you Yahoo!? Read only the mail you want - Yahoo! Mail SpamGuard. http://promotions.yahoo.com/new_mail _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: Timers in my NKE
by Godfrey van der Linden 17 Jun '04

17 Jun '04

G'day Justin, You are right it is #include <kern/thread_call.h> // And can be found in xnu/osfmk/kern It sort of depends on what you want to do with the timeou()t. But for regularly scheduled timeouts I prefer using thread_call_enter directly as it is lighter weight and closer to my requirements. Godfrey On Jun 17, , at 10:38, Justin Walker wrote: On Jun 17, 2004, at 10:11, Godfrey van der Linden wrote: Check out <xnu/kern/thread_call.h> Huh? I don't find such a file. What about a 'timeout()' call? _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: Timers in my NKE
by Godfrey van der Linden 17 Jun '04

17 Jun '04

Check out <xnu/kern/thread_call.h> Godfrey On Jun 16, , at 22:20, Matt Jaffa wrote: Hi, I am looking for a very simple way to implement a timer in my NKE, so after about 5 minutes fire a thread, that will do some stuff. Is there any documentation on this? The thread doesn't have to be real time priority Matt _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored. _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: File Monitoring under Mac OS X
by Olivier Kaloudoff 17 Jun '04

17 Jun '04

>Hi All, Hi Sir Monian, >I am currently trying to write a file logger, which >logs every single file access (read, write, delete) on >a specified volume. > >Could someone brief me on what would the best way be >to go about doing this. Would it have to be in kernel >mode or can it be done in user mode? You might take a look at SGI FAM, the File Alteration Monitor, that is already available for many flavors of unix, including *BSD. Some posts in the forums show that port for osx has been at least tried if not already succeeded; http://oss.sgi.com/projects/fam/ What is FAM? FAM, the File Alteration Monitor, provides an API that applications can use to be notified when specific files or directories are changed. FAM comes in two parts: fam, the daemon that listens for requests and delivers notification, and libfam, a library that client applications can use to communicate with fam. FAM was originally written for IRIX in 1989 by Bruce Karsh, and was rewritten in 1995 by Bob Miller. This open-source release of FAM builds and runs on both Linux and IRIX, and is almost identical to the version of FAM that ships with IRIX 6.5.x. Maybe would be worth to join the port effort ? Regards, Olivier Kaloudoff LUG Linux Azur http://www.linux-azur.org _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Timers in my NKE
by Matt Jaffa 17 Jun '04

17 Jun '04

Hi, I am looking for a very simple way to implement a timer in my NKE, so after about 5 minutes fire a thread, that will do some stuff. Is there any documentation on this? The thread doesn't have to be real time priority Matt _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: File Monitoring under Mac OS X
by Krishna Monian 17 Jun '04

17 Jun '04

Hi Garth, I need to log every single file that is accessed in a particular directory. It need not be accessed by the same process. Ideally I should be able to tell it to start logging a particular directory and every file that is accessed in that directory should be logged. ktrace seems to generate a huge amount of output and from what I have figured so far, it doesn't give you the filenames(full path) of the files accessed Thanks --- Garth Cummings <gcummings(a)apple.com> wrote: > Hi Krishna, > > On Jun 16, 2004, at 4:19 PM, Krishna Monian wrote: > > > Hi All, > > > > I am currently trying to write a file logger, > which > > logs every single file access (read, write, > delete) on > > a specified volume. > > > > Could someone brief me on what would the best way > be > > to go about doing this. Would it have to be in > kernel > > mode or can it be done in user mode? > > > > Is it in anyway similar to the SampleFilterScheme > > example posted on Apple's website. > > > http://developer.apple.com/samplecode/SampleFilterScheme/ > > > SampleFilterScheme.html > > No, because at that layer you only know that so many > bytes are being > read from or written to the disk starting at a given > block. There's no > file or volume information at the filter scheme > layer. > > How about using ktrace(1)? > > > > > Thanks > > Krishna Monian > > > __________________________________________________________________ > Garth Cummings > Apple Developer Technical Support > gcummings(a)apple.com > > The Platform. The People. The Possibilities. > Connect at WWDC 2004. > http://developer.apple.com/wwdc > > ATTACHMENT part 2 application/pkcs7-signature name=smime.p7s __________________________________ Do you Yahoo!? New and Improved Yahoo! Mail - 100MB free storage! http://promotions.yahoo.com/new_mail _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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Re: File Monitoring under Mac OS X
by Garth Cummings 16 Jun '04

16 Jun '04

Hi Krishna, On Jun 16, 2004, at 4:19 PM, Krishna Monian wrote: > Hi All, > > I am currently trying to write a file logger, which > logs every single file access (read, write, delete) on > a specified volume. > > Could someone brief me on what would the best way be > to go about doing this. Would it have to be in kernel > mode or can it be done in user mode? > > Is it in anyway similar to the SampleFilterScheme > example posted on Apple's website. > http://developer.apple.com/samplecode/SampleFilterScheme/ > SampleFilterScheme.html No, because at that layer you only know that so many bytes are being read from or written to the disk starting at a given block. There's no file or volume information at the filter scheme layer. How about using ktrace(1)? > > Thanks > Krishna Monian > __________________________________________________________________ Garth Cummings Apple Developer Technical Support gcummings(a)apple.com The Platform. The People. The Possibilities. Connect at WWDC 2004. http://developer.apple.com/wwdc [demime 0.98b removed an attachment of type application/pkcs7-signature which had a name of smime.p7s] _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

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