November 2004 - Darwin-dev - lists.apple.com

Re: HFS kernel panic
by Fritz Anderson 05 Nov '04

05 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com -- F On 4 Nov 2004, at 9:10 PM, Steve West wrote: ********* Fri Nov 5 12:51:35 2004 Kernel version: Darwin Kernel Version 7.5.0: Thu Aug 5 19:26:16 PDT 2004; root:xnu/xnu-517.7.21.obj~3/RELEASE_PPC ********* Steve This email sent to fritza(a)manoverboard.org -- Fritz Anderson Consulting Programmer Chicago, Illinois http://resume.manoverboard.org/ _______________________________________________ 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… Regardless of the outcome from the other suggestion(s) PLEASE take your report to <http://bugreport.apple.com/>, where it will get put into Apple's bug queue. Reporting to a mailing list doesn't do that. Experiencing the following panic when accessing certain files on the disk in my 17" powerbook. Attempting to fix permissions in the Disk Utility causes it, for example. Running DiskWarrior on another machine to fix my disk causes *that* machine to panic also. panic(cpu 0): hfs_lookup: bad ca_blocks (too small) Latest stack backtrace for cpu 0: Backtrace: 0x000836E4 0x00083BC8 0x0001EDA4 0x001D9E80 0x001DAA8C 0x000BE344 0x000BDD8C 0x000C7AC0 0x002452B4 0x00094200 0x412E3B5F Proceeding back via exception chain: Exception state (sv=0x1FF46780) PC=0x900144CC; MSR=0x0200F030; DAR=0x16D86008; DSISR=0x40000000; LR=0x910CF928; R1=0xBFFFEED0; XCP=0x00000030 (0xC00 - Sy stem call) _______________________________________________ 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/ fritza%40manoverboard.org This email sent to site_archiver(a)lists.apple.com

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Re: POSIX shm_unlink() problem
by Paul Ripke 05 Nov '04

05 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Friday, Nov 5, 2004, at 10:15 Australia/Sydney, Peter Lovell wrote: On Nov 4, 2004, at 5:26 PM, Jeff W. Boote wrote: Thanks, jeff The name argument points to a string naming a shared memory object. It is unspecified whether the name appears in the file system and is visible to other functions that take pathnames as arguments. The name argument conforms to the construction rules for a pathname. If name begins with the slash character, then processes calling shm_open() with the same value of name refer to the same shared memory object, as long as that name has not been removed. If name does not begin with the slash character, the effect is implementation- defined. The interpretation of slash characters other than the leading slash character in name is implementation-defined. Checking posix_shm.c in xnu, max name length is indeed 31, and there is a conditional piece of code that can enforce the leading slash. Not sure if this is enabled by default or not. Maybe so, but hopefully they fit within the bounds of the standards :) cheers, -- stix _______________________________________________ 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… I am having problems using shm_unlink() on Panther. Is anyone using this system call successfully on OS X? After failure, errno is set to EINVAL (which is not even one of the documented possible errors). I'm attaching a fairly simple test case that works on FreeBSD and Linux. My recollection is that the name must not have any slashes (i.e. it's a name and not a path). I think also that there's a 31-character > limit. Not quite. From <http://www.opengroup.org/onlinepubs/009695399/functions/shm_open.html>: It seems that every system has differing rules for name (sigh). This email sent to site_archiver(a)lists.apple.com

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Re: HFS kernel panic
by Tim Seufert 05 Nov '04

05 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Nov 4, 2004, at 7:10 PM, Steve West wrote: _______________________________________________ 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… Experiencing the following panic when accessing certain files on the disk in my 17" powerbook. Attempting to fix permissions in the Disk Utility causes it, for example. Running DiskWarrior on another machine to fix my disk causes *that* machine to panic also. Was the disk mounted when DiskWarrior was run? If so, you might want to unmount it using Disk Utility (as opposed to ejecting it), then try DW. It should be quite hard for the kernel HFS filesystem driver to panic if the disk is unmounted. :) This email sent to site_archiver(a)lists.apple.com

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HFS kernel panic
by Steve West 05 Nov '04

05 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Microsoft-Entourage/10.1.4.030702.0 Experiencing the following panic when accessing certain files on the disk in my 17" powerbook. Attempting to fix permissions in the Disk Utility causes it, for example. Running DiskWarrior on another machine to fix my disk causes *that* machine to panic also. ********* Fri Nov 5 12:51:35 2004 panic(cpu 0): hfs_lookup: bad ca_blocks (too small) Latest stack backtrace for cpu 0: Backtrace: 0x000836E4 0x00083BC8 0x0001EDA4 0x001D9E80 0x001DAA8C 0x000BE344 0x000BDD8C 0x000C7AC0 0x002452B4 0x00094200 0x412E3B5F Proceeding back via exception chain: Exception state (sv=0x1FF46780) PC=0x900144CC; MSR=0x0200F030; DAR=0x16D86008; DSISR=0x40000000; LR=0x910CF928; R1=0xBFFFEED0; XCP=0x00000030 (0xC00 - Sy stem call) Kernel version: Darwin Kernel Version 7.5.0: Thu Aug 5 19:26:16 PDT 2004; root:xnu/xnu-517.7.21.obj~3/RELEASE_PPC ********* Steve _______________________________________________ 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: POSIX shm_unlink() problem
by Jeff W. Boote 05 Nov '04

05 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Mozilla Thunderbird 0.8 (Macintosh/20040913) jeff _______________________________________________ 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… Peter Lovell wrote: My recollection is that the name must not have any slashes (i.e. it's a name and not a path). I think also that there's a 31-character limit. It seems that every system has differing rules for name (sigh). I tried removing the slash and the problem persists. (If this were the problem, I would have expected an error on shm_open, not shm_unlink.) This email sent to site_archiver(a)lists.apple.com

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Re: POSIX shm_unlink() problem
by Peter Lovell 04 Nov '04

04 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Nov 4, 2004, at 5:26 PM, Jeff W. Boote wrote: Thanks, jeff It seems that every system has differing rules for name (sigh). Regards.....Peter _______________________________________________ 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… I am having problems using shm_unlink() on Panther. Is anyone using this system call successfully on OS X? After failure, errno is set to EINVAL (which is not even one of the documented possible errors). I'm attaching a fairly simple test case that works on FreeBSD and Linux. My recollection is that the name must not have any slashes (i.e. it's a name and not a path). I think also that there's a 31-character limit. This email sent to site_archiver(a)lists.apple.com

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POSIX shm_unlink() problem
by Jeff W. Boote 04 Nov '04

04 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Mozilla Thunderbird 0.8 (Macintosh/20040913) I'm attaching a fairly simple test case that works on FreeBSD and Linux. Thanks, jeff % gcc -g tstshm.c % ./a.out shm_unlink(): Invalid argument #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <errno.h> #include <sys/types.h> #include <fcntl.h> #include <sys/mman.h> #include <sys/wait.h> #include <sys/stat.h> main(){ int fd; pid_t pid; /* * linux doesn't like sub-paths, and FreeBSD likes "real" directory * permissions for shared mem names... */ #ifdef linux char memname[] = "/MEMNAME1"; #else char memname[] = "/tmp/MEMNAME9"; #endif char hipop[] = "Hello Parent Process"; char *tst; fd = shm_open(memname,O_RDWR|O_CREAT|O_EXCL,0666); if(fd < 0){ perror("shm_open():"); exit(1); } if(shm_unlink(memname) != 0){ perror("shm_unlink()"); exit(1); } pid = fork(); if(pid < 0){ perror("fork(): "); exit(1); } if(pid > 0){ /* * parent */ int wstatus=0; struct stat sbuf; /* * Wait for child to exit. */ WAIT_AGAIN: if(waitpid(pid,&wstatus,0) != pid){ if(errno == EINTR) goto WAIT_AGAIN; perror("waitpid(): "); exit(1); } if(!WIFEXITED(wstatus) || WEXITSTATUS(wstatus)){ perror("Child process exited in strange state."); exit(1); } /* * Determine size of the message child left behind. */ if(fstat(fd,&sbuf) != 0){ perror("fstat(): "); exit(1); } /* * Map the child message into 'tst'. */ tst = mmap(NULL,sbuf.st_size,PROT_READ|PROT_WRITE,MAP_SHARED,fd,0); if(tst == MAP_FAILED){ perror("Parent:mmap(): "); exit(1); } fprintf(stdout,"Parent read \"%s\"\n",tst); exit(0); } /* * child */ /* * Set the size of the shm segment. */ if(ftruncate(fd,sizeof(hipop)) != 0){ perror("ftruncate(): "); exit(1); } /* * Map it as a char * */ tst = mmap(NULL,sizeof(hipop),PROT_READ|PROT_WRITE,MAP_SHARED,fd,0); if(tst == MAP_FAILED){ perror("child:mmap(): "); exit(1); } /* * Leave a message in the shm for the parent process to read after * exit. */ strcpy(tst,hipop); exit(0); } _______________________________________________ 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 I am having problems using shm_unlink() on Panther. Is anyone using this system call successfully on OS X? After failure, errno is set to EINVAL (which is not even one of the documented possible errors).

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Re: Porting newbie seeks help with a couple of things
by Dan Markarian 04 Nov '04

04 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hi Mike, We do not support the same ioctl requests. See <sys/disk.h>. See DKIOCSYNCHRONIZECACHE. Dan On 2 Nov 2004, at 1:49 PM, Michael Dupuis wrote: Greetings, ioctl(dev, HDIO_GET_IDENTITY, &id) Thanks in advance for any help getting this stuff running on OS X. Mike _______________________________________________ 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/markarian%40apple.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… HDIO_GET_IDENTITY flush the disk I've been tasked to port a project from Linux to Mac OS X, and am in the process of doing that now. I've run into a few things that I'm not sure about. It's been a long time since I've been in the 'innards' of a Unix platform, and I'm usually a GUI/Framework guy, not a driver/disk developer. My first question is about the correct way to port from Linux ioctl requests to Darwin (OS X). What I have on Linux right now is a call like this: where HDIO_GET_ENTITY and id, which is a hd_driveid struct, are defined in /linux/hdreg.h. If I copy this file from a Linux box, things will compile, but I'm guessing that the request definition and struct might be used differently on the Mac. Is there any info on the correct way to make this change from Linux? I haven't had much searching. My second question is similar: I need to be able to flush the disk (device) and the Linux code does this using ioctl(fd, HDIO_DRIVE_CMD, &flushcmd) where flushcmd is defined: const unsigned char flushcmd[4] = {0xe7,0,0,0} and HDIO_DRIVE_CMD is defined in hdreg.h. Again, with by including the linux header file, things will compile, but I'm not sure they are working. Is there any place I can look to make sure I'm doing this correctly? This email sent to markarian(a)apple.com This email sent to site_archiver(a)lists.apple.com

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Re: ldd on Darwin / OSX?
by jmzorko＠mac.com 03 Nov '04

03 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Clark, How do I do the equivalent of the *nix "ldd" command on Darwin / Mac OSX? Thanks very much! Regards, Falling You - exploring the beauty of voice and sound New album, "Touch", available now http://www.magnatune.com/artists/falling_you _______________________________________________ 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… otool -L <executable> John, whose .bash_profile full of aliases is becoming one of his most valued treasures :-) This email sent to site_archiver(a)lists.apple.com

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Re: ldd on Darwin / OSX?
by Clark Cox 03 Nov '04

03 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:references; b=ivTpT43JanGhI2MzV47kDxhVhxOUHpr8cjTQ1ZMQcspNlwPZa9yweCK4qWXlqox8WDq7f+0mVurDadsgRg0wzquPUjnJvn4bo3CnOneRyoj0CQz+aEVHc27nyzYL4eirxeWU+iOO2vNp66xjwb6VFjVCuypoMk3/2jrUFCGsAWE= On Tue, 2 Nov 2004 18:13:12 -0800, jmzorko(a)mac.com <jmzorko(a)mac.com> wrote: > > Hello, all ... > > How do I do the equivalent of the *nix "ldd" command on Darwin / Mac > OSX? otool -L <executable> -- Clark S. Cox III clarkcox3(a)gmail.com http://www.livejournal.com/users/clarkcox3/ http://homepage.mac.com/clarkcox3/ _______________________________________________ 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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