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Edit File: updatedb
#! /bin/sh # updatedb -- build a locate pathname database # Copyright (C) 1994-2022 Free Software Foundation, Inc. # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <https://www.gnu.org/licenses/>. # csh original by James Woods; sh conversion by David MacKenzie. #exec 2> /tmp/updatedb-trace.txt #set -x version=' updatedb (GNU findutils) 4.9.0 Copyright (C) 1994-2022 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Written by Eric B. Decker, James Youngman, and Kevin Dalley. ' # File path names are not actually text, anyway (since there is no # mechanism to enforce any constraint that the basename of a # subdirectory has the same character encoding as the basename of its # parent). The practical effect is that, depending on the way a # particular system is configured and the content of its filesystem, # passing all the file names in the system through "sort" may generate # character encoding errors in text-based tools like "sort". To avoid # this, we set LC_ALL=C. This will, presumably, not work perfectly on # systems where LC_ALL is not the way to do locale configuration or # some other seting can override this. LC_ALL=C export LC_ALL # We can't use substitution on PACKAGE_URL below because it # (correctly) points to https://www.gnu.org/software/findutils/ instead # of the bug reporting page. usage="\ Usage: $0 [--findoptions='-option1 -option2...'] [--localpaths='dir1 dir2...'] [--netpaths='dir1 dir2...'] [--prunepaths='dir1 dir2...'] [--prunefs='fs1 fs2...'] [--output=dbfile] [--netuser=user] [--localuser=user] [--dbformat] [--version] [--help] Please see also the documentation at https://www.gnu.org/software/findutils/. Report (and track progress on fixing) bugs in the updatedb program via the GNU findutils bug-reporting page at https://savannah.gnu.org/bugs/?group=findutils or, if you have no web access, by sending email to <bug-findutils@gnu.org>. " changeto=/ for arg do # If we are unable to fork, the back-tick operator will # fail (and the shell will emit an error message). When # this happens, we exit with error value 71 (EX_OSERR). # Alternative candidate - 75, EX_TEMPFAIL. opt=`echo $arg|sed 's/^\([^=]*\).*/\1/'` || exit 71 val=`echo $arg|sed 's/^[^=]*=\(.*\)/\1/'` || exit 71 case "$opt" in --findoptions) FINDOPTIONS="$val" ;; --localpaths) SEARCHPATHS="$val" ;; --netpaths) NETPATHS="$val" ;; --prunepaths) PRUNEPATHS="$val" ;; --prunefs) PRUNEFS="$val" ;; --output) LOCATE_DB="$val" ;; --netuser) NETUSER="$val" ;; --localuser) LOCALUSER="$val" ;; --changecwd) changeto="$val" ;; --dbformat) dbformat="$val" ;; --version) fail=0; echo "$version" || fail=1; exit $fail ;; --help) fail=0; echo "$usage" || fail=1; exit $fail ;; *) echo "updatedb: invalid option $opt Try '$0 --help' for more information." >&2 exit 1 ;; esac done frcode_options="" case "$dbformat" in "") # Default, use LOCATE02 ;; LOCATE02) ;; slocate) frcode_options="$frcode_options -S 1" ;; *) # The "old" database format is no longer supported. echo "Unsupported locate database format ${dbformat}: Supported formats are:" >&2 echo "LOCATE02, slocate" >&2 exit 1 esac if true then sort="/usr/bin/sort -z" print_option="-print0" frcode_options="$frcode_options -0" else sort="/usr/bin/sort" print_option="-print" fi getuid() { # format of "id" output is ... # uid=1(daemon) gid=1(other) # for `id's that don't understand -u id | cut -d'(' -f 1 | cut -d'=' -f2 } # figure out if su supports the -s option select_shell() { if su "$1" -s $SHELL -c false < /dev/null ; then # No. echo "" else if su "$1" -s $SHELL -c true < /dev/null ; then # Yes. echo "-s $SHELL" else # su is unconditionally failing. We won't be able to # figure out what is wrong, so be conservative. echo "" fi fi } # You can set these in the environment, or use command-line options, # to override their defaults: # Any global options for find? : ${FINDOPTIONS=} # What shell shoud we use? We should use a POSIX-ish sh. : ${SHELL="/bin/sh"} # Non-network directories to put in the database. : ${SEARCHPATHS="/"} # Network (NFS, AFS, RFS, etc.) directories to put in the database. : ${NETPATHS=} # Directories to not put in the database, which would otherwise be. : ${PRUNEPATHS=" /afs /amd /proc /sfs /tmp /usr/tmp /var/tmp "} # Trailing slashes result in regex items that are never matched, which # is not what the user will expect. Therefore we now reject such # constructs. for p in $PRUNEPATHS; do case "$p" in /*/) echo "$0: $p: pruned paths should not contain trailing slashes" >&2 exit 1 esac done # The same, in the form of a regex that find can use. test -z "$PRUNEREGEX" && PRUNEREGEX=`echo $PRUNEPATHS|sed -e 's,^,\\\(^,' -e 's, ,$\\\)\\\|\\\(^,g' -e 's,$,$\\\),'` # The database file to build. : ${LOCATE_DB=/var/cache/locate/locatedb} # Directory to hold intermediate files. if test -z "$TMPDIR"; then if test -d /var/tmp; then : ${TMPDIR=/var/tmp} elif test -d /usr/tmp; then : ${TMPDIR=/usr/tmp} else : ${TMPDIR=/tmp} fi fi export TMPDIR # The user to search network directories as. : ${NETUSER=daemon} # The directory containing the subprograms. if test -n "$LIBEXECDIR" ; then : LIBEXECDIR already set, do nothing else : ${LIBEXECDIR=/usr/libexec} fi # The directory containing find. if test -n "$BINDIR" ; then : BINDIR already set, do nothing else : ${BINDIR=/usr/bin} fi # The names of the utilities to run to build the database. : ${find:=${BINDIR}/find} : ${frcode:=${LIBEXECDIR}/frcode} make_tempdir () { # This implementation is adapted from the GNU Autoconf manual. { tmp=` (umask 077 && mktemp -d "$TMPDIR/updatedbXXXXXX") 2>/dev/null ` && test -n "$tmp" && test -d "$tmp" } || { # This method is less secure than mktemp -d, but it's a fallback. # # We use $$ as well as $RANDOM since $RANDOM may not be available. # We also add a time-dependent suffix. This is actually somewhat # predictable, but then so is $$. POSIX does not require date to # support +%N. ts=`date +%N%S || date +%S 2>/dev/null` tmp="$TMPDIR"/updatedb"$$"-"${RANDOM:-}${ts}" (umask 077 && mkdir "$tmp") } echo "$tmp" } checkbinary () { if test -x "$1" ; then : ok else eval echo "updatedb needs to be able to execute $1, but cannot." >&2 exit 1 fi } for binary in $find $frcode do checkbinary $binary done : ${PRUNEFS=" 9P NFS afs autofs cifs coda devfs devpts ftpfs fuse.s3fs iso9660 mfs ncpfs nfs nfs4 proc shfs smbfs sysfs "} if test -n "$PRUNEFS"; then prunefs_exp=`echo $PRUNEFS |sed -e 's/\([^ ][^ ]*\)/-o -fstype \1/g' \ -e 's/-o //' -e 's/$/ -o/'` else prunefs_exp='' fi # Make and code the file list. # Sort case insensitively for users' convenience. rm -f $LOCATE_DB.n trap 'rm -f $LOCATE_DB.n; exit' HUP TERM if { cd "$changeto" if test -n "$SEARCHPATHS"; then if [ "$LOCALUSER" != "" ]; then # : A1 su $LOCALUSER `select_shell $LOCALUSER` -c \ "$find $SEARCHPATHS $FINDOPTIONS \ \\( $prunefs_exp \ -type d -regex '$PRUNEREGEX' \\) -prune -o $print_option" else # : A2 $find $SEARCHPATHS $FINDOPTIONS \ \( $prunefs_exp \ -type d -regex "$PRUNEREGEX" \) -prune -o $print_option fi fi if test -n "$NETPATHS"; then myuid=`getuid` if [ "$myuid" = 0 ]; then # : A3 su $NETUSER `select_shell $NETUSER` -c \ "$find $NETPATHS $FINDOPTIONS \\( -type d -regex '$PRUNEREGEX' -prune \\) -o $print_option" || exit $? else # : A4 $find $NETPATHS $FINDOPTIONS \( -type d -regex "$PRUNEREGEX" -prune \) -o $print_option || exit $? fi fi } | $sort | $frcode $frcode_options > $LOCATE_DB.n then : OK so far true else rv=$? echo "Failed to generate $LOCATE_DB.n" >&2 rm -f $LOCATE_DB.n exit $rv fi # To avoid breaking locate while this script is running, put the # results in a temp file, then rename it atomically. if test -s $LOCATE_DB.n; then chmod 644 ${LOCATE_DB}.n mv ${LOCATE_DB}.n $LOCATE_DB else echo "updatedb: new database would be empty" >&2 rm -f $LOCATE_DB.n fi exit 0