Date: Wed, 17 Oct 2007 19:41:58 +0100 (BST) From: Robert Watson <rwatson@FreeBSD.org> To: Stefan Esser <se@FreeBSD.org> Cc: Ceri Davies <ceri@submonkey.net>, cvs-src@FreeBSD.org, Alfred Perlstein <alfred@freebsd.org>, cvs-all@FreeBSD.org, src-committers@FreeBSD.org Subject: Re: cvs commit: src/usr.bin/locate/locate updatedb.sh Message-ID: <20071017193822.Y60783@fledge.watson.org> In-Reply-To: <4716350B.90004@FreeBSD.org> References: <200710152209.l9FM9Jv3017150@repoman.freebsd.org> <20071016102013.GE23043@submonkey.net> <4714F06B.7070702@FreeBSD.org> <20071016225906.GK23043@submonkey.net> <20071017122837.GM31826@elvis.mu.org> <4716350B.90004@FreeBSD.org>
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On Wed, 17 Oct 2007, Stefan Esser wrote: > Alfred Perlstein wrote: >> * Ceri Davies <ceri@submonkey.net> [071016 15:59] wrote: >>> While userland can tell if a filesystem is pseudo or not, (see lsvfs), I'm >>> not sure that we can reliably tell whether a device is removable or not >>> (cf. my camera, USB key, iPod, etc.). >> >> fstab(5) gives some hints, "noauto" would be a giveaway as well as value of >> 0 for 'fs_passno' is also a hint. > > Hmmm, file systems with noauto could be added to $PRUNEPATHS, I guess. But > I'm against too much magic behind the scenes, since that may lead to > violation of the POLA. I'll give it a try, anyway ... > > Other sub-directories exist that should be kept out of the locate db like > /var/spool for example. Probably there are many more ... Another possibility here is to add a noindex flag to fstab/mount options and to explicitly mark things that locate (and things that might follow locate) shouldn't index in addition to network file systems. Desktop auto-mounters could set the flag automatically. I also find myself a bit nervous about heuristics that think certain file systems might be removable devices implicitly, or certain types of drives, etc. Robert N M Watson Computer Laboratory University of Cambridge
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