January 2003 - Darwin-kernel

Re: Kernel -> user boundary
by George André 27 Jan '03

27 Jan '03

Hi Godfrey, My problem starts inside msdosfs.kext, which is my kext. I've changed this kext to rename certain files when created. The only time I can do that unambiguously is at close() time (when the filesystem receives close op). Using NDINIT/namei/VOP_RENAME works ok and does what it's supposed to, but the problems come from the following chown/chmod syscalls from the Finder. Finder does that last on a file drag & copy operation. Problem is that since I've changed the name, chown and chmod fail inside their kernel implementations and never get down to me... Thus, our friend the Finder puts up a nice dialog about not finding the files. One of my solutions is to send the path name to the user process and it will do the rename itself and thus defer this task. I'm currently working on this approach: the user proc allocates mem with vm_allocate(), the it uses mach_make_memory_entry_64() and then sends the ipc_port_t to the kext thru mount args. (user proc is actually spawned by mount_msdos). This allocated memory is then vm_mapped by the kext and there you go... memory sharing. Is this approach something that will work, or am I out chasing rabbits? Thanks, George. Godfrey van der Linden wrote: At 21:09 +0100 03-1-27, George Andri wrote: Hi there, I am aware of user -> kernel boundary crossing, like Mach IPC, RPC, syscall, sysctl and ioctl. But I'm interested ina kernel -> user *initiated* connection, is there anything outthere? I have a kext that needs to initiate communication with an user process. I can alternatively let the user process initiate the connection in one of the above ways and then pass a data pool pointer, but that would be a lot harder. IS there anything I can do or use to initiate a kernel -> user crossing without user parts help? Not really. Do you have a user land app that you are talking to? If so it is pretty easy to emulate a kernel initiated event. What do you want to happen in user land when the kernel hits something. I guess what I'm asking is what problem are you actually trying to solve. Godfrey van der Linden _______________________________________________ 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: Kernel -> user boundary
by Godfrey van der Linden 27 Jan '03

27 Jan '03

At 21:09 +0100 03-1-27, George Andri wrote: Hi there, I am aware of user -> kernel boundary crossing, like Mach IPC, RPC, syscall, sysctl and ioctl. But I'm interested ina kernel -> user *initiated* connection, is there anything outthere? I have a kext that needs to initiate communication with an user process. I can alternatively let the user process initiate the connection in one of the above ways and then pass a data pool pointer, but that would be a lot harder. IS there anything I can do or use to initiate a kernel -> user crossing without user parts help? Not really. Do you have a user land app that you are talking to? If so it is pretty easy to emulate a kernel initiated event. What do you want to happen in user land when the kernel hits something. I guess what I'm asking is what problem are you actually trying to solve. Godfrey van der Linden _______________________________________________ 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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Kernel -> user boundary
by George André 27 Jan '03

27 Jan '03

Hi there, I am aware of user -> kernel boundary crossing, like Mach IPC, RPC, syscall, sysctl and ioctl. But I'm interested ina kernel -> user *initiated* connection, is there anything outthere? I have a kext that needs to initiate communication with an user process. I can alternatively let the user process initiate the connection in one of the above ways and then pass a data pool pointer, but that would be a lot harder. IS there anything I can do or use to initiate a kernel -> user crossing without user parts help? Thanks, George. _______________________________________________ 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: libwine
by Allen K. Smith 26 Jan '03

26 Jan '03

libwine != wine http://www.winehq.org/docs/winelib-user/winelib-introduction.shtml On Sunday, January 26, 2003, at 01:05 PM, Brian_Tabone wrote: WINE only works on X86 architectures, it does not convert X86 opcodes to anything else, but instead provides libraries that emulate windows API's so that X86 Windows binaries can run on an X86 UNIX platform (AKA Linux, FreeBSD etc). So, while WINE may compile and work on X86 Darwin, it wont be able to do any good for you on PowerPC based Mac OSX. On Sunday, January 26, 2003, at 02:09 PM, Alex Reynolds wrote: On Sunday, January 26, 2003, at 01:00 AM, darwin-kernel-request(a)lists.apple.com wrote: Message: 3 From: "Allen K. Smith" <lazlor(a)bigboy.lotaris.org> To: Justin Walker <justin(a)mac.com>, darwin-kernel(a)lists.apple.com Subject: Re: WinSock vs BSD Sockets API Date: Sat, 25 Jan 2003 19:31:31 -0800 libwine might have something you can use. Is it possible to compile WINE under darwin? I haven't been able to compile any distributions. -Alex _______________________________________________ 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. _______________________________________________ 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: libwine
by Brian_Tabone 26 Jan '03

26 Jan '03

WINE only works on X86 architectures, it does not convert X86 opcodes to anything else, but instead provides libraries that emulate windows API's so that X86 Windows binaries can run on an X86 UNIX platform (AKA Linux, FreeBSD etc). So, while WINE may compile and work on X86 Darwin, it wont be able to do any good for you on PowerPC based Mac OSX. On Sunday, January 26, 2003, at 02:09 PM, Alex Reynolds wrote: On Sunday, January 26, 2003, at 01:00 AM, darwin-kernel-request(a)lists.apple.com wrote: Message: 3 From: "Allen K. Smith" <lazlor(a)bigboy.lotaris.org> To: Justin Walker <justin(a)mac.com>, darwin-kernel(a)lists.apple.com Subject: Re: WinSock vs BSD Sockets API Date: Sat, 25 Jan 2003 19:31:31 -0800 libwine might have something you can use. Is it possible to compile WINE under darwin? I haven't been able to compile any distributions. -Alex _______________________________________________ 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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libwine
by Alex Reynolds 26 Jan '03

26 Jan '03

On Sunday, January 26, 2003, at 01:00 AM, darwin-kernel-request(a)lists.apple.com wrote: Message: 3 From: "Allen K. Smith" <lazlor(a)bigboy.lotaris.org> To: Justin Walker <justin(a)mac.com>, darwin-kernel(a)lists.apple.com Subject: Re: WinSock vs BSD Sockets API Date: Sat, 25 Jan 2003 19:31:31 -0800 libwine might have something you can use. Is it possible to compile WINE under darwin? I haven't been able to compile any distributions. -Alex _______________________________________________ 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: WinSock vs BSD Sockets API
by Allen K. Smith 26 Jan '03

26 Jan '03

libwine might have something you can use. On 01/25/2003 05:51 pm, Justin Walker wrote: > None that I'm aware of. It's possible that "V1" of WinSock would work > more or less unchanged, but "V2" is off in a different direction. > > Regards, > > Justin > > On Saturday, Jan 25, 2003, at 17:43 US/Pacific, Alex Reynolds wrote: > > A question: > > > > I have code from a Windows proxy application which makes heavy use of > > Windows Sockets API calls (referencing winsock.h and winsock2.h). > > > > Are there any libraries I can add which bridge WinSock to BSD Sockets > > API calls, so that I would be able to build this application under OS > > X? > > > > Regards, > > Alex > > _______________________________________________ > > 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: WinSock vs BSD Sockets API
by Justin Walker 26 Jan '03

26 Jan '03

None that I'm aware of. It's possible that "V1" of WinSock would work more or less unchanged, but "V2" is off in a different direction. Regards, Justin On Saturday, Jan 25, 2003, at 17:43 US/Pacific, Alex Reynolds wrote: A question: I have code from a Windows proxy application which makes heavy use of Windows Sockets API calls (referencing winsock.h and winsock2.h). Are there any libraries I can add which bridge WinSock to BSD Sockets API calls, so that I would be able to build this application under OS X? Regards, Alex _______________________________________________ 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. -- Justin C. Walker, Curmudgeon-At-Large * Institute for General Semantics | It's not whether you win or lose... | It's whether *I* win or lose. *--------------------------------------*-------------------------------* _______________________________________________ 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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WinSock vs BSD Sockets API
by Alex Reynolds 26 Jan '03

26 Jan '03

A question: I have code from a Windows proxy application which makes heavy use of Windows Sockets API calls (referencing winsock.h and winsock2.h). Are there any libraries I can add which bridge WinSock to BSD Sockets API calls, so that I would be able to build this application under OS X? Regards, Alex _______________________________________________ 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: Building the kernel 6.0.2
by Jeff Jenkins 21 Jan '03

21 Jan '03

On Monday, January 20, 2003, at 08:30 AM, Quinn wrote: At 20:42 -0800 16/1/03, Jeff Jenkins wrote: BTW, are the sources found in xnu the same as those provided in a Mac OS X install? No. I mean, if I build mach_kernel will it work if I replace the mach_kernel that is provided as part of Mac OS X? Yes. There are very minor differences between the sources that Apple uses to build production Mac OS X kernels and the Darwin sources. The differences are sufficiently minor that X boots just fine using a Darwin-built kernel. In fact, I do this regularly when debugging (while I have access to Apple's sources, it's better if I can get away with using only public resources when helping third party developers). Any thoughts on what CVS tag will get me sources that approximates what 10.2.3 is built on? The only tag I can get to build is Apple-344. All newer stuff has files missing...messy... Rah! 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. _______________________________________________ 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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