On Tuesday 17 May 2005 03:01, Jeff Dike wrote: > ... commenting on bits and pieces of this thread... > > On Tue, May 17, 2005 at 12:17:38AM +0100, Nix wrote: > > eee-ick. That'll really collide nastily with glibc's assumption that > > errno is located in thread-local storage, I fear. > > It's sort of necessary (or some nasty trick is) because UML (re)maps its > code and text shareable into a number of different address spaces (each > UML process address space). errno can't be shared since different UML > threads running (system calls) simultaneously would tromp it. The > obvious thing to try to do is lock access to errno by putting a lock around > every system call. This is more horrible than what I decided to do > instead (locating errno in a per-thread private page). I'm going to inline the syscalls with _syscallN but disabling errno entirely, as I did for the SKAS test program (see on my site), by redefining syscall_return. > > (Um, why is UML linking against libpcap? Or don't I want to know?) > > There's a UML network transport which converts libpcap into UML eth0. You > install a sniffer into a UML filesystem, boot it up, give it access to > your network's traffic, and away you go. > > Jeff > > > ------------------------------------------------------- > This SF.Net email is sponsored by Oracle Space Sweepstakes > Want to be the first software developer in space? > Enter now for the Oracle Space Sweepstakes! > http://ads.osdn.com/?ad_id=7412&alloc_id=16344&op=click > _______________________________________________ > User-mode-linux-user mailing list > User-mode-linux-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
-- Paolo Giarrusso, aka Blaisorblade Skype user "PaoloGiarrusso" Linux registered user n. 292729 http://www.user-mode-linux.org/~blaisorblade ------------------------------------------------------- This SF.Net email is sponsored by Oracle Space Sweepstakes Want to be the first software developer in space? Enter now for the Oracle Space Sweepstakes! http://ads.osdn.com/?ad_id=7412&alloc_id=16344&op=click _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
