Date: Fri, 25 Aug 2006 10:47:55 +0200 From: Divacky Roman <xdivac02@stud.fit.vutbr.cz> To: Intron is my alias on the Internet <mag@intron.ac> Cc: freebsd-emulation@freebsd.org, freebsd-current@freebsd.org Subject: Re: Linuxulator: Unbreak Mozilla, Firefox and RealPlayer Message-ID: <20060825084755.GA93151@stud.fit.vutbr.cz> In-Reply-To: <courier.44EE6A8A.00008655@intron.ac> References: <courier.44EE6A8A.00008655@intron.ac>
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On Fri, Aug 25, 2006 at 11:12:10AM +0800, Intron is my alias on the Internet wrote: > Debugging is somewhat MUCH MORE DIFFICULT than rewriting. > > Here is the minimum patch that can only unbreak Mozilla 1.7.12 (GTK 1), > Firefox 1.0.7 and RealPlayer 10.0.7.785 (playing video) > (sysctl compat.linux.osrelease=2.6.16). > > It doesn't mean problems of clone(2) have been fixed. Actually, clone(2), > set_thread_area(2) and get_thread_area(2) are mis-interpreted. > > Adobe Reader 7.0.8 hasn't been completely unbroken yet. Problems around > it seem to be more complicated. > > My patch (against /sys/i386/linux/linux_machdep.c of CVS revision 1.53): > > http://ftp.intron.ac/tmp/linux_machdep.c.1.53.diff + p2->p_pptr = td->td_proc->p_pptr; I already did this but differently: if (args->flags & (CLONE_PARENT|CLONE_THREAD)) { struct linux_getppid_args gpa; struct proc *pp; (void) linux_getppid(td, &gpa); pp = pfind(td->td_retval[0]); if (pp == NULL) { printf("shit\n"); return 0; } PROC_LOCK(p2); p2->p_pptr = pp; PROC_UNLOCK(p2); PROC_UNLOCK(pp); } also, linux also sets pgrp with CLONE_THREAD. can you pls explain me the set_thread_area() changes? also.. dont forget to update both instances of setting up TLS (ie. in CLONE_SETTLS and in set_thread_area() syscall) I have some more fixes uncommited which might fix the acroread. thnx for the work! roman
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