Date: Fri, 09 Aug 2013 11:05:43 +0800 From: Julian Elischer <julian@freebsd.org> To: Don Lewis <truckman@FreeBSD.org> Cc: freebsd-arch@FreeBSD.org Subject: Re: Reliable process tracking Message-ID: <52045C87.2080203@freebsd.org> In-Reply-To: <201308090301.r7931XDc059355@gw.catspoiler.org> References: <201308090301.r7931XDc059355@gw.catspoiler.org>
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On 8/9/13 11:01 AM, Don Lewis wrote: > On 9 Aug, Julian Elischer wrote: > >> I've been pondering the possibility of appending a universe (jail) >> number to the >> UIDS, PIDS and various other things. (classes maybe?). >> >> It wouldn't have to be everywhere, but ther eare a number of places >> where comparisons would >> DTRT if they were comparing "my_jail+my_uid" with "his_jail+his_uid", >> instead of just the UIDs. >> It would also help with the "multiple roots" problem, and might >> simplify some of the current code. > If that's all you want, then why not just compare > proc1->p_fd->fd_jdir to proc2->p_fd->fd_jdir > for the jail check? > > > because multiple jails can have the same root directory? there are other tests one can do too, if one is willing to do multiple tests everywhere.
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