January 2004 - Darwin-kernel

ClassicEnvironment
by Matt Jaffa 07 Jan '04

07 Jan '04

Hi all, Is it possible to find out all the running apps in classic environment. My KEXT is a dlil interface filter, it gets the current proc, however there is only on pid for a classic app, the TruBlueEnvironment. By using that is it possible to find out all the running apps under that, since a classic app running in TruBlueEnvironment does not have its own unix pid. Thanks 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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(no subject)
by Derrick Mitchell 06 Jan '04

06 Jan '04

how do you utilize dummynet in jaguar? -- http://www.fastmail.fm - Sent 0.000002 seconds ago _______________________________________________ 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: Getting a IOMemoryDescriptor from a struct uio?
by Quinn 05 Jan '04

05 Jan '04

At 11:41 -0700 2/1/04, Nathan T. Hjelm wrote: I am working on a device driver which simply creates a /dev entry a usb device but I am running into problems because in order to call Read or Write on an IOUSBPipe I need a IOMemoryDescriptor. I found some code on the google used in the IOStrorageFamily but it crashes my kernel on a call to write. It looks like you 'stole' this code from "IOMediaBSDClient.cpp", which makes a lot of sense. I guess the next thing I'd investigate is the crash itself, to see if you can track it backwards from there. S+E -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Technical Support * Networking, Communications, Hardware _______________________________________________ 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: Typo in /bsd/hfs/hfs_hotfiles.c
by Quinn 05 Jan '04

05 Jan '04

At 16:13 -0800 22/12/03, Chris Adams wrote: bsd/hfs/hfs_hotfiles.c line 1344 handles errors during the main loop in hotfiles_evict: printf("hotfiles_evict: err % relocating file\n", error, key->fileID); which looks like it should have been something more like: printf("hotfiles_evict: err %i relocating file %u\n", error, key->fileID); Please file this as a bug. This is the only way to guarantee that the right folks will look at it. <http://developer.apple.com/bugreporter/> That's just a minor concern, however, with the larger question about what causes these errors and how to fix the problem as there doesn't appear to be any documentation about this (or hotfiles in general). We're currently working on documentation for the on-disk representation of hotfiles. I recently reviewed a late draft so I hope to see a public version soon. Running fsck on one test system seems to take care of the problem (raising questions about what it changes on an otherwise clean, journaled filesystem) but that may also be coincidence. It does seem like it would be useful to remove a hotfile entry the first time an error is encountered to avoid continually spewing kernel messages. I have no idea what's causing this. It'd be interesting to know what the error number is. You probably should file a bug about the ongoing error spewage. S+E -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Technical Support * Networking, Communications, Hardware _______________________________________________ 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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Where can i find TCPLogger and tcplog examples
by Matt Jaffa 05 Jan '04

05 Jan '04

Hi, I have asked this question twice over the holiday season, but I think alot weren't answering because of the holiday season. Just wanted to quickly ask it again. Does anyone know where on the developer site is the TCPLogger and tcplog examples. I searched the archives and found links to where they should be, but they no longer work. So does anyone know a current link to both those programs that works? Thanks, 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: Where can I find VFS related code in darwin?
by Quinn 05 Jan '04

05 Jan '04

At 1:52 -0800 5/1/04, Ramble Leon wrote: The project require me to patch the vfs/vnode, but I cannot find the vfs/vnode related code... You need to get the xnu project from Darwin. <http://www.opensource.apple.com/darwinsource/Current/index.html> This requires an APSL <http://www.opensource.apple.com/apsl/> account. Once you have the xnu source, look in bsd/vfs, bsd/kern, and bsd/hfs (for the source for HFS Plus, the standard local file system). If you're planning to ship an actual product to customers, please take note of the warnings in DTS Q&A 1242 "Developing for VFS". <http://developer.apple.com/qa/qa2001/qa1242.html> S+E -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Technical Support * Networking, Communications, Hardware _______________________________________________ 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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Where can I find VFS related code in darwin?
by Ramble Leon 05 Jan '04

05 Jan '04

The project require me to patch the vfs/vnode, but I cannot find the vfs/vnode related code... __________________________________ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/ _______________________________________________ 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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pthread_cancel problem on MAC OSX
by Girish 05 Jan '04

05 Jan '04

Hi Darwin Devloper, I am doing some assignments related to thread in user space.After doing lots of R & D, I came to know that "pthread_cancel()" is not working properly.The same program is working fine on Linux. Program is as follows... #include <stdio.h> #include <unistd.h> #include <stdlib.h> #include <pthread.h> #define SUCCESS 0 #define TRUE 1 // Thread function declaration void * run(void *); // Program to check for pthread cancel int main(int argc,char * argv[]) { pthread_t thread; int retval; // Create thread which will fall in infinite loop retval = pthread_create(&thread,NULL,run,NULL); if ( retval != SUCCESS ) { perror("Thread Creation Failed...\n"); exit(EXIT_FAILURE); } sleep(3); // Cancel Thread fprintf(stdout,"Canceling thread...\n"); retval = pthread_cancel(thread); if ( retval != SUCCESS ) { perror("Thread Caneclation Failed...\n"); exit(EXIT_FAILURE); } // Wait for Thread to join fprintf(stdout,"Waiting for Thread to Finish...\n"); retval = pthread_join(thread,NULL); if ( retval != SUCCESS ) { perror("Thread Joining Failed...\n"); exit(EXIT_FAILURE); } exit(EXIT_SUCCESS); } // Thread function void * run(void * arg) { int retval; // Set thread cancel state retval = pthread_setcancelstate(PTHREAD_CANCEL_ENABLE,NULL); if ( retval != SUCCESS ) { perror("Thread pthread_setcancelstate Failed...\n"); exit(EXIT_FAILURE); } // Set thread cancel type retval = pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED,NULL); if ( retval != SUCCESS ) { perror("Thread pthread_setcanceltype failed..."); exit(EXIT_FAILURE); } // Infinite loop fprintf(stdout,"Thread Function is running...\n"); while ( TRUE ) { sleep(1); } } Regards Girish V. Dudhe (S P Software,Pune,India) __________________________________ Do you Yahoo!? Find out what made the Top Yahoo! Searches of 2003 http://search.yahoo.com/top2003 _______________________________________________ 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: Problems building xnu-517 or xnu-517.3.7
by Felix Kronlage 03 Jan '04

03 Jan '04

On Fri, Jan 02, 2004 at 07:29:57AM -0800, Timothy Standing wrote: > When I try and build xnu-517, I end up with the build ending with > the following error: [...] > /bin/sh: line 1: /usr/local/bin/kextsymboltool: No such file or > directory you lack parts of the toolchain. Shantonu made a tarball with the binaries needed. You can grab all necessary parts here[1]. > When I try and build xnu-517.3.7, I get the following errors [..] of course you still need [1], but also I suggest applying the diff found at [2], since otherwise the code won't compile either. -fkr [1] http://opendarwin.org/~ssen/xnu-tools-darwin-7.0.tar.gz [1] http://opendarwin.org/~fkr/xnu/make-xnu-517.3.7-compile.diff -- gpg-fingerprint: 076E 1E87 3E05 1C7F B1A0 8A48 0D31 9BD3 D9AC 74D0 Felix Kronlage | FKR-RIPE | http://www.hazardous.org/fkr/ fkr(a){grummel.net|opendarwin.org} | http://opendarwin.org/~fkr/ [demime 0.98b removed an attachment of type application/pgp-signature] _______________________________________________ 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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Getting a IOMemoryDescriptor from a struct uio?
by Nathan T. Hjelm 02 Jan '04

02 Jan '04

I am working on a device driver which simply creates a /dev entry a usb device but I am running into problems because in order to call Read or Write on an IOUSBPipe I need a IOMemoryDescriptor. I found some code on the google used in the IOStrorageFamily but it crashes my kernel on a call to write. extern "C" task_t get_aiotask(void); inline task_t get_user_task(void) { task_t utask; utask = get_aiotask(); if (utask == TASK_NULL) return current_task(); else return utask; } IOMemoryDescriptor *uio_to_MD (struct uio *uio) { return IOMemoryDescriptor::withRanges( (IOVirtualRange *) uio->uio_iov, (UInt32) uio->uio_iovcnt, (uio->uio_rw == UIO_READ ) ? kIODirectionIn : kIODirectionOut, (uio->uio_segflg != UIO_SYSSPACE) ? get_user_task() : kernel_task, true ); } I use the IOMemoryDescriptor here: ::write(dev_t dev, struct uio *uio, int ioflag) { IOUSBPipe *out = fInterface->GetPipeObj (2); IOMemoryDescriptor *mem = uio_to_MD(uio); out->Write (mem, 1, 5000, mem->getLength()); return mem->getLength(); } I know everything but the IOMemoryDescriptor is correct because I can write a buffer if I create it in this function. Am I doing something wrong? thanks, -Nathan _______________________________________________ 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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