Use /etc/locate.conf for configuration, per discussion at tech-userlevel.

usr.bin/locate/locate/updatedb.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-#	$NetBSD: updatedb.sh,v 1.7 2002/05/05 07:27:35 kim Exp $
+#	$NetBSD: updatedb.sh,v 1.8 2004/02/06 14:29:51 itohy Exp $
 #
 # Copyright (c) 1989, 1993
 #	The Regents of the University of California.  All rights reserved.
@@ -39,12 +39,93 @@
 #	@(#)updatedb.csh	8.4 (Berkeley) 10/27/94
 #
 
-SRCHPATHS="/"				# directories to be put in the database
 LIBDIR="/usr/libexec"			# for subprograms
 					# for temp files
+TMPDIR=/tmp
 FCODES="/var/db/locate.database"	# the database
+CONF=/etc/locate.conf			# configuration file
 
 PATH="/bin:/usr/bin"
+
+ignorefs_default='! -fstype local -o -fstype cd9660 -o -fstype fdesc -o -fstype kernfs -o -fstype procfs'
+ignorefs=unset
+ignore=
+SRCHPATHS=
+
+# read configuration file
+if [ -f "$CONF" ]; then
+	exec 5<&0 < "$CONF"
+	while read com args; do
+		case "$com/$args" in /) continue;; esac	# skip blank lines
+		case "$com" in
+		'#'*)	;;			# lines start with # is comment
+		searchpath)
+			SRCHPATHS="$SRCHPATHS $args";;
+		ignorefs)
+			for i in $args; do
+				case "$args" in
+				none)	ignorefs=;;
+				*)	fs=`echo "$i" | sed -e 's/^!/! -fstype /' -e t -e 's/^/-fstype /'`
+					case "$ignorefs" in
+					''|unset)
+						ignorefs="$fs";;
+					*)	ignorefs="$ignorefs -o $fs";;
+					esac;;
+				esac
+			done;;
+		ignore)
+			set -f
+			for i in $args; do
+				case "$ignore" in
+				'')	;;
+				*)	ignore="$ignore -o";;
+				esac
+				ignore="$ignore -path $i"
+			done
+			set +f;;
+		ignorecontents)
+			set -f
+			for i in $args; do
+				case "$ignore" in
+				'')	;;
+				*)	ignore="$ignore -o";;
+				esac
+				ignore="$ignore -path $i -print"
+			done
+			set +f;;
+		workdir)
+			if [ -d "$args" ]; then
+				TMPDIR="$args"
+			else
+				echo "$CONF: workdir: $args nonexistent" >&2
+			fi;;
+		*)
+			echo "$CONF: $com: unknown config command"	>&2
+			exit 1;;
+		esac
+	done
+	exec <&5 5>&-
+fi
+
+# default value when "ignorefs" is absent
+case "$ignorefs" in
+unset)	ignorefs=$ignorefs_default;;
+esac
+
+: ${SRCHPATHS:=/}			# directories to be put in the database
+export TMPDIR
+
+case "$ignorefs/$ignore" in
+/)	lp= ;   rp= ;;
+*)	lp='('; rp=') -prune -o' ;;
+esac
+
+# insert '-o' if neither $ignorefs or $ignore are empty
+case "$ignorefs $ignore" in
+' '*|*' ')	;;
+*)		ignore="-o $ignore";;
+esac
+
 FILELIST=`mktemp -t locate.list` || exit 1
 trap "rm -f '$FILELIST'" EXIT
 trap "rm -f '$FILELIST'; exit 1" INT QUIT TERM
@@ -52,16 +133,8 @@ trap "rm -f '$FILELIST'; exit 1" INT QUIT TERM
 # Make a file list and compute common bigrams.
 # Entries of each directory shall be sorted (find -s).
 
-# search locally or everything
-# find -s $SRCHPATHS -print \
-find -s $SRCHPATHS \( \
-    ! -fstype local	\
-    -o -fstype cd9660	\
-    -o -fstype fdesc	\
-    -o -fstype kernfs	\
-    -o -fstype procfs	\
-    \) -a -prune -o -print \
-	>> "$FILELIST"
+set -f
+find -s ${SRCHPATHS} $lp $ignorefs $ignore $rp -print >> "$FILELIST"
 
 BIGRAMS=`$LIBDIR/locate.bigram <"$FILELIST"`