conf/120993: 340.noid -- Add "find -x" capability (don't cross fs boundaries)

[Jeremy Chadwick]

>Number:         120993
>Category:       conf
>Synopsis:       340.noid -- Add "find -x" capability (don't cross fs boundaries)
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          update
>Submitter-Id:   current-users
>Arrival-Date:   Sat Feb 23 13:40:01 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Jeremy Chadwick
>Release:        FreeBSD 6.3-PRERELEASE i386
>Organization:
>Environment:
System: FreeBSD eos.sc1.parodius.com 6.3-PRERELEASE FreeBSD 6.3-PRERELEASE #0: Mon Jan 14 17:48:12 PST 2008 root at eos.sc1.parodius.com:/usr/obj/usr/src/sys/EOS i386
>Description:
	Our backup server running FreeBSD rsync to do backups for all other machines
	on our network, storing the results in /storage (which is its own filesystem).
	All of our systems have different /etc/passwd and /etc/group files -- they are
	not identical across all machines.

	When weekly_noid_enable="yes" is used in periodic.conf on said server, find(1)
	will traverse / (see $weekly_noid_dirs), and **will** cross fs boundaries.

	This results in a 35MByte mail from "periodic weekly", which isn't desirable.
>How-To-Repeat:
	See description.  :-)
>Fix:
	Add support for the -x argument to find(1) in 340.noid.  Below is the patch,
	and has been tested on both RELENG_7 and RELENG_6 with success.  With this
	patch, we can then do use the following in periodic.conf, thus stopping find(1)
	from ever hitting /storage:

	weekly_noid_enable="yes"
	weekly_noid_crossfs="no"
	weekly_noid_dirs="/ /var /tmp /usr"

	periodic.conf(5) will also need to be updated to reflect this addition.

--- 340.noid.orig	2008-02-23 05:33:55.000000000 -0800
+++ 340.noid	2008-02-23 05:34:44.000000000 -0800
@@ -11,12 +11,19 @@
     source_periodic_confs
 fi
 
+crossfs=""
+case "$weekly_noid_crossfs" in
+    [Nn][Oo])
+	crossfs="-x"
+	;;
+esac
+
 case "$weekly_noid_enable" in
     [Yy][Ee][Ss])
 	echo ""
 	echo "Check for files with an unknown user or group:"
 
-	rc=$(find -H ${weekly_noid_dirs:-/} \
+	rc=$(find -H ${crossfs} ${weekly_noid_dirs:-/} \
 	    \( ! -fstype local -prune -or -name \* \) -and \
 	    \( -nogroup -o -nouser \) -print | sed 's/^/  /' |
 	    tee /dev/stderr | wc -l)
>Release-Note:
>Audit-Trail:
>Unformatted: