Date: Sun, 27 Oct 2002 01:24:19 -0700 From: Juli Mallett <jmallett@FreeBSD.org> To: Maxim Sobolev <sobomax@FreeBSD.ORG> Cc: Nate Lawson <nate@root.org>, jlemon@FreeBSD.ORG, hackers@FreeBSD.ORG, audit@FreeBSD.ORG Subject: Re: New kevent types: NOTE_STARTEXEC and NOTE_STOPEXEC Message-ID: <20021027012419.A94775@FreeBSD.org> In-Reply-To: <20021027082309.GC36533@vega.vega.com>; from sobomax@FreeBSD.ORG on Sun, Oct 27, 2002 at 10:23:09AM %2B0200 References: <3DB79DFA.FA719B8F@FreeBSD.org> <Pine.BSF.4.21.0210261715520.78755-100000@root.org> <20021027075043.GA36533@vega.vega.com> <20021027010429.A90908@FreeBSD.org> <20021027082309.GC36533@vega.vega.com>
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* De: Maxim Sobolev <sobomax@FreeBSD.ORG> [ Data: 2002-10-27 ] [ Subjecte: Re: New kevent types: NOTE_STARTEXEC and NOTE_STOPEXEC ] > On Sun, Oct 27, 2002 at 01:04:29AM -0700, Juli Mallett wrote: > > * De: Maxim Sobolev <sobomax@FreeBSD.ORG> [ Data: 2002-10-27 ] > > [ Subjecte: Re: New kevent types: NOTE_STARTEXEC and NOTE_STOPEXEC ] > > > On Sat, Oct 26, 2002 at 06:09:31PM -0700, Nate Lawson wrote: > > > > On Thu, 24 Oct 2002, Maxim Sobolev wrote: > > > > > Please review the patch, which adds two new types of events - > > > > > NOTE_STARTEXEC and NOTE_STOPEXEC, that could be used to get > > > > > notification when the image starts or stops executing. For example, it > > > > > could be used to monitor that a daemon is up and running and notify > > > > > administrator when for some reason in exits. I am running this code > > > > > for more than a year now without any problems. > > > > > > > > > > Any comments and suggestions are welcome. > > > > > > > > Couldn't this just be done by init(8) and /etc/ttys? Or inetd? If you > > > > want to write your own, couldn't you use waitpid()? Or a kevent() of > > > > EVFILT_PROC with NOTE_EXIT/NOTE_FORK? I'm not sure I see the need for > > > > this. > > > > > > EVFILT_PROC operates on pids, while NOTE_{START,STOP}EXEC operate on > > > vnodes - it is the main difference. Currently, you can't reliably > > > get a notification when kernes started executing some arbitrary > > > executable from your fs. > > > > This is not a job for the kernel, I don't think. > > Why not? Kernel now reports number of internal events via kqueue(2) interface, > there is nothing wrong in adding yet another one. BTW, linux and irix already > have similar functionality provided by /dev/imon. If you implemented a kq interface, and an imon wrapper, I'd be much more impressed. A less-divergant interface to do this would be nice, even if kq is the backing. In fact, especially if kq is the backing, kq is strong, kq will make us smart. -- Juli Mallett <jmallett@FreeBSD.org> | FreeBSD: The Power To Serve Will break world for fulltime employment. | finger jmallett@FreeBSD.org http://people.FreeBSD.org/~jmallett/ | Support my FreeBSD hacking! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-audit" in the body of the message
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