January 2003 - Darwin-kernel

Re: socketvar.h
by Eric Long 03 Jan '03

03 Jan '03

> sockbuf is a kernel only structure, as should be evidenced by the > KERNEL define wrapper. You can't expect to define KERNEL and have > things work. Secondly, sockbuf is declared in the scope of the socket > structure. > > IOW, if you aren't writing a kernel extension, don't even attempt to > use the sockbuf (or socket) structure. I am writing a kernel extension. The #ifdef KERNEL thing is comes from what I saw in the source example I am drawing from. Regarding scope... This is the part that is a bit confusing to me. I never define a struct within a struct like this header does. How should a forward declaration for this be declared? I am able to work with the declare sockbuf* paramaeters in C implementation files with no complications. I don't know what the compiler is looking for when I try to do the same in a C++ file. Eric Long _______________________________________________ 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: socketvar.h
by Brian Bergstrand 03 Jan '03

03 Jan '03

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Friday, January 3, 2003, at 02:39 PM, Eric Long wrote: > This is probably simple, but I haven't encountered this problem before > and > its not clear to me why I'm getting this problem... > > I want to create a function that accepts as an argument a sockbuf*. > The > function is implemented in a C++ file, but is declared in a header > available > to call from a C file. > > And a C++ source file that looks something like this: > > extern "C" { > > #ifndef KERNEL > #define KERNEL > #include <sys/socketvar.h> > #undef KERNEL > #else > #include <sys/socketvar.h> > #endif > > When I attempt to build, I get error messages like this: > >> foo.h:10: forward declaration of `struct sockbuf' >> foo.cp:20: invalid use of undefined type `struct sockbuf' >> > > The puzzle is if I modify the above "example" to reference a socket > and not > a sockbuf, I get no compilation errors. > > How do declare these properly so I can just use a sockbuf? > > Thanks in advance, > > Eric Long > sockbuf is a kernel only structure, as should be evidenced by the KERNEL define wrapper. You can't expect to define KERNEL and have things work. Secondly, sockbuf is declared in the scope of the socket structure. IOW, if you aren't writing a kernel extension, don't even attempt to use the sockbuf (or socket) structure. Brian Bergstrand <http://www.classicalguitar.net/brian/> PGP Key ID: 0xB6C7B6A2 Punctuality is the virtue of the bored. - Evelyn Waug -----BEGIN PGP SIGNATURE----- Version: PGP 8.0 iQA/AwUBPhX6gnnR2Fu2x7aiEQJeMwCggDxUEUCpP1sCZ59NknVpExc8xz8Anig/ NSie6qkYZBEj8Lq0jXNwG9qt =LbYj -----END 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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socketvar.h
by Eric Long 03 Jan '03

03 Jan '03

This is probably simple, but I haven't encountered this problem before and its not clear to me why I'm getting this problem... I want to create a function that accepts as an argument a sockbuf*. The function is implemented in a C++ file, but is declared in a header available to call from a C file. So, I have a header that looks something like this: #ifdef __cplusplus extern "C" { #endif struct sockbuf; int foo( struct sockbuf *sb ); #ifdef __cplusplus } #endif And a C++ source file that looks something like this: extern "C" { #ifndef KERNEL #define KERNEL #include <sys/socketvar.h> #undef KERNEL #else #include <sys/socketvar.h> #endif int foo(struct sockbuf *sb ) { ...do something with sb } } // extern "C" When I attempt to build, I get error messages like this: > foo.h:10: forward declaration of `struct sockbuf' > foo.cp:20: invalid use of undefined type `struct sockbuf' > The puzzle is if I modify the above "example" to reference a socket and not a sockbuf, I get no compilation errors. How do declare these properly so I can just use a sockbuf? Thanks in advance, Eric Long _______________________________________________ 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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directory move kernel panic
by Brian Tabone 02 Jan '03

02 Jan '03

Recently on Slashdot, there was a mention of a Kernel panic that occured when any user attempted to move a directory one level up when the parent dir had the same name as the dir being moved. For reference, the link is :http://apple.slashdot.org/article.pl?sid=02/11/29/1346224&mode=thread&tid=179 I am wondering if anyone could point me to the changed files relating to this panic and its fix in 10.2.3. I searched but could not find reference to it in the archives for this group. -Sincerely, Brian Tabone _______________________________________________ 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: Matching CVS tag and my current kernel
by Michael Kress 02 Jan '03

02 Jan '03

Apple-344-2 builds kernel version 6.1, so my question stands. On Wednesday, January 1, 2003, at 08:12 PM, Michael Kress wrote: Same occurs for Apple-344-12. When I checkout Apple-344 everything is okay, and I can build the kernel, but I get Darwin Kernel Version 6.0. I haven't yet tried Apple-344-2 since I'd expect that I still wouldn't get the kernel version I want. What do I have to do to match my current kernel version or is that not possible? _______________________________________________ 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: Matching CVS tag and my current kernel
by Justin C. Walker 02 Jan '03

02 Jan '03

Looks like things might be a tad out of control at Darwin central. From the look of the log, there are too many cooks actively spoiling the broth: RCS file: /cvs/Darwin/src/notlive/xnu/Makefile,v Working file: Makefile head: 1.2 branch: locks: strict access list: symbolic names: APPLE-Security-Update-2002-11-21: 1.2 APPLE-10-2-2: 1.2 xnu-344-12-2: 1.2 Apple-344-2: 1.1.1.5 xnu-10: 1.1.1.5 Apple-344: 1.1.1.5 FWIW, what I do is to check out 'xnu', to get a few files in a CVS tree. Then do 'cvs log' on one of those files, and figure out from the list of tags what might work. In this case, looks like you have a few choices :-}. I'd give either 344-12-2 or the APPLE-10-2-2 versions a shot. Sadly, there appears to be some glitches in the movement from the Apple-internal to darwin-external 'xnu' trees. Regards, Justin On Wednesday, January 1, 2003, at 08:12 PM, Michael Kress wrote: I'm trying to match my current kernel with a CVS version and things aren't proceeding as I'd expected. I'm at OS X 10.2.2. [doodle:~] micalk% uname -v Darwin Kernel Version 6.2: Tue Nov 5 22:00:03 PST 2002; root:xnu/xnu-344.12.2.obj~1/RELEASE_PPC [doodle:~] micalk% cvs -z3 checkout -r Apple-344-12-2 xnu ? xnu/BUILD cvs [server aborted]: no such tag Apple-344-12-2 Same occurs for Apple-344-12. When I checkout Apple-344 everything is okay, and I can build the kernel, but I get Darwin Kernel Version 6.0. I haven't yet tried Apple-344-2 since I'd expect that I still wouldn't get the kernel version I want. What do I have to do to match my current kernel version or is that not possible? Michael Kress _______________________________________________ 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 | When LuteFisk is outlawed | Only outlaws will have | LuteFisk *--------------------------------------*-------------------------------* _______________________________________________ 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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Matching CVS tag and my current kernel
by Michael Kress 02 Jan '03

02 Jan '03

I'm trying to match my current kernel with a CVS version and things aren't proceeding as I'd expected. I'm at OS X 10.2.2. [doodle:~] micalk% uname -v Darwin Kernel Version 6.2: Tue Nov 5 22:00:03 PST 2002; root:xnu/xnu-344.12.2.obj~1/RELEASE_PPC [doodle:~] micalk% cvs -z3 checkout -r Apple-344-12-2 xnu ? xnu/BUILD cvs [server aborted]: no such tag Apple-344-12-2 Same occurs for Apple-344-12. When I checkout Apple-344 everything is okay, and I can build the kernel, but I get Darwin Kernel Version 6.0. I haven't yet tried Apple-344-2 since I'd expect that I still wouldn't get the kernel version I want. What do I have to do to match my current kernel version or is that not possible? Michael Kress _______________________________________________ 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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