1#!/bin/sh
2#
3# SPDX-License-Identifier: BSD-2-Clause
4#
5# Copyright (c) September 1995 Wolfram Schneider <wosch@FreeBSD.org>. Berlin.
6# All rights reserved.
7#
8# Redistribution and use in source and binary forms, with or without
9# modification, are permitted provided that the following conditions
10# are met:
11# 1. Redistributions of source code must retain the above copyright
12#    notice, this list of conditions and the following disclaimer.
13# 2. Redistributions in binary form must reproduce the above copyright
14#    notice, this list of conditions and the following disclaimer in the
15#    documentation and/or other materials provided with the distribution.
16#
17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27# SUCH DAMAGE.
28#
29# updatedb - update locate database for local mounted filesystems
30#
31
32if [ "$(id -u)" = "0" ]; then
33	echo ">>> WARNING" 1>&2
34	echo ">>> Executing updatedb as root.  This WILL reveal all filenames" 1>&2
35	echo ">>> on your machine to all login users, which is a security risk." 1>&2
36fi
37: ${LOCATE_CONFIG="/etc/locate.rc"}
38if [ -f "$LOCATE_CONFIG" -a -r "$LOCATE_CONFIG" ]; then
39       . $LOCATE_CONFIG
40fi
41
42# The directory containing locate subprograms
43: ${LIBEXECDIR:=/usr/libexec}; export LIBEXECDIR
44: ${TMPDIR:=/tmp}; export TMPDIR
45if ! TMPDIR=`mktemp -d $TMPDIR/locateXXXXXXXXXX`; then
46	exit 1
47fi
48
49PATH=$LIBEXECDIR:/bin:/usr/bin:$PATH; export PATH
50
51
52: ${mklocatedb:=locate.mklocatedb}	 # make locate database program
53: ${FCODES:=/var/db/locate.database}	 # the database
54: ${SEARCHPATHS="/"}		# directories to be put in the database
55: ${PRUNEPATHS="/tmp /usr/tmp /var/tmp /var/db/freebsd-update"} # unwanted directories
56: ${PRUNEDIRS=".zfs"}	# unwanted directories, in any parent
57: ${FILESYSTEMS="$(lsvfs | tail -n +3 | \
58	egrep -vw "loopback|network|synthetic|read-only|0" | \
59	cut -d " " -f1)"}		# allowed filesystems
60: ${find:=find}
61
62if [ -z "$SEARCHPATHS" ]; then
63	echo "$0: empty variable SEARCHPATHS" >&2; exit 1
64fi
65if [ -z "$FILESYSTEMS" ]; then
66	echo "$0: empty variable FILESYSTEMS" >&2; exit 1
67fi
68
69# Make a list a paths to exclude in the locate run
70excludes="! (" or=""
71for fstype in $FILESYSTEMS
72do
73       excludes="$excludes $or -fstype $fstype"
74       or="-or"
75done
76excludes="$excludes ) -prune"
77
78if [ -n "$PRUNEPATHS" ]; then
79	for path in $PRUNEPATHS; do 
80		excludes="$excludes -or -path $path -prune"
81	done
82fi
83
84if [ -n "$PRUNEDIRS" ]; then
85	for dir in $PRUNEDIRS; do
86		excludes="$excludes -or -name $dir -type d -prune"
87	done
88fi
89
90tmp=$TMPDIR/_updatedb$$
91trap 'rm -f $tmp; rmdir $TMPDIR' 0 1 2 3 5 10 15
92		
93# search locally
94if $find -s $SEARCHPATHS $excludes -or -print 2>/dev/null |
95        $mklocatedb -presort > $tmp
96then
97	if [ -n "$($find $tmp -size -257c -print)" ]; then
98		echo "updatedb: locate database $tmp is empty" >&2
99		exit 1
100	else
101		cat $tmp > $FCODES		# should be cp?
102	fi
103fi
104