Debian bug report logs - #1239
/etc/cron.daily/find: updatedb doesn't exclude cdrom and others

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From: Ian Jackson <iwj10@cus.cam.ac.uk>
To: debian-bugs@pixar.com
Subject: Re: Bug#1239: /etc/cron.daily/find: updatedb doesn't exclude cdrom and others

Lars Wirzenius writes:
> /etc/cron.daily/find in findutils-4.1-2.deb doesn't exclude the /cdrom
> directory.  I think it should, since the CD-ROM that is mounted the next
> day probably isn't the one that was mounted during the night.
> 
> I assume it also doesn't exclude the /floppy, /proc, and /mnt directories,
> but I haven't checked.  (What's /disk?)

/disk is going away, I think - it was part of a scheme involving
symlinks for an experimental 2-partition setup.

> Fix: use a command similar to the following instead:
> 	updatedb --prunepaths="/cdrom /tmp /var/tmp /proc" 2>/dev/null

Can updatedb not be made to be more controllable ?

The `checksecurity' script in the latest cron package uses (to find
all devices and setuid files):

find `mount | grep -vE ' type (proc|iso9660) |^/dev/fd| on /mnt' | cut -d ' ' -f 3` \
     -xdev \( -type f -perm +06000 -o -type b -o -type c \) -ls \
  | sort >$TMP

This avoids problems where people mount things in unexpected places.

Ian.

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From: Lars Wirzenius <wirzeniu@cc.helsinki.fi>
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Subject: /etc/cron.daily/find: updatedb doesn't exclude cdrom and others
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Package: findutils
Version: 4.1-2

/etc/cron.daily/find in findutils-4.1-2.deb doesn't exclude the /cdrom
directory.  I think it should, since the CD-ROM that is mounted the next 
day probably isn't the one that was mounted during the night.

I assume it also doesn't exclude the /floppy, /proc, and /mnt directories,
but I haven't checked.  (What's /disk?)

Fix: use a command similar to the following instead:

	updatedb --prunepaths="/cdrom /tmp /var/tmp /proc" 2>/dev/null

(I choose to run this as root, instead of nobody, but that isn't a good 
idea for most others.)