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- #!/bin/bash
- # updatedb -- build a locate pathname database
- # Copyright (C) 1994 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 2, 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, write to the Free Software
- # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- # USA.
-
- # csh original by James Woods; sh conversion by David MacKenzie.
-
- usage="\
- Usage: updatedb [--findoptions='-option1 -option2...']
- [--localpaths='dir1 dir2...'] [--netpaths='dir1 dir2...']
- [--prunepaths='dir1 dir2...'] [--prunefs='fs1 fs2...']
- [--output=dbfile] [--netuser=user] [--localuser=user]
- [--old-format] [--version] [--help]
-
- Report bugs to <bug-findutils@gnu.org>.
- "
- changeto=/
- old=no
- 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="$val" ;;
- --old-format) old=yes ;;
- --changecwd) changeto="$val" ;;
- --version) echo "GNU updatedb version 4.2.11-CVS"; exit 0 ;;
- --help) echo "$usage"; exit 0 ;;
- *) echo "updatedb: invalid option $opt
- $usage" >&2
- exit 1 ;;
- esac
- done
-
- if test "$old" = yes; then
- echo "Warning: future versions of findutils will shortly discontinue support for the old locate database format." >&2
-
- sort="/bin/sort"
- print_option="-print"
- frcode_options=""
- else
- if true
- then
- sort="/bin/sort -z"
- print_option="-print0"
- frcode_options="-0"
- else
- sort="/bin/sort"
- print_option="-print"
- frcode_options=""
- fi
- 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
- }
-
- # 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.
- : ${PRUNEPATHS="/tmp /usr/tmp /var/tmp /afs /amd /sfs"}
-
- # The same, in the form of a regex that find can use.
- test -z "$PRUNEREGEX" &&
- PRUNEREGEX=`echo $PRUNEPATHS|sed -e 's,^,\\\(^,' -e 's, ,$\\\)\\\|\\\(^,g' -e 's,$,$\\\),'`
-
- # The database file to build.
- : ${LOCATE_DB=/usr/var/locatedb}
-
- # Directory to hold intermediate files.
- if test -d /var/tmp; then
- : ${TMPDIR=/var/tmp}
- elif test -d /usr/tmp; then
- : ${TMPDIR=/usr/tmp}
- else
- : ${TMPDIR=/tmp}
- 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
- : ${LIBEXECDIR=/usr/sbin}
- fi
-
- # The directory containing find.
- if test -n "$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}
- : ${bigram:=${LIBEXECDIR}/bigram}
- : ${code:=${LIBEXECDIR}/code}
-
-
- PATH=/bin:/usr/bin:${BINDIR}; export PATH
-
- : ${PRUNEFS="nfs NFS proc afs proc smbfs autofs iso9660 ncpfs coda devpts ftpfs devfs mfs sysfs shfs"}
-
- if test -n "$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 test $old = no; then
-
- # FIXME figure out how to sort null-terminated strings, and use -print0.
- if {
- cd "$changeto"
- if test -n "$SEARCHPATHS"; then
- if [ "$LOCALUSER" != "" ]; then
- # : A1
- su $LOCALUSER -s $SHELL -c \
- "$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 -s $SHELL -c \
- "$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 -f | $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
- rm -f $LOCATE_DB
- mv $LOCATE_DB.n $LOCATE_DB
- chmod 644 $LOCATE_DB
- else
- echo "updatedb: new database would be empty" >&2
- rm -f $LOCATE_DB.n
- fi
-
- else # old
-
- if ! bigrams=`mktemp -t updatedbXXXXXXXXX`; then
- echo tempfile failed
- exit 1
- fi
-
- if ! filelist=`mktemp -t updatedbXXXXXXXXX`; then
- echo tempfile failed
- exit 1
- fi
-
- rm -f $LOCATE_DB.n
- trap 'rm -f $bigrams $filelist $LOCATE_DB.n; exit' HUP TERM
-
- # Alphabetize subdirectories before file entries using tr. James Woods says:
- # "to get everything in monotonic collating sequence, to avoid some
- # breakage i'll have to think about."
- {
- cd "$changeto"
- if test -n "$SEARCHPATHS"; then
- if [ "$LOCALUSER" != "" ]; then
- # : A5
- su $LOCALUSER -s $SHELL -c \
- "$find $SEARCHPATHS $FINDOPTIONS \
- \( $prunefs_exp \
- -type d -regex '$PRUNEREGEX' \) -prune -o $print_option" || exit $?
- else
- # : A6
- $find $SEARCHPATHS $FINDOPTIONS \
- \( $prunefs_exp \
- -type d -regex "$PRUNEREGEX" \) -prune -o $print_option || exit $?
- fi
- fi
-
- if test -n "$NETPATHS"; then
- myuid=`getuid`
- if [ "$myuid" = 0 ]; then
- # : A7
- su $NETUSER -s $SHELL -c \
- "$find $NETPATHS $FINDOPTIONS \\( -type d -regex '$PRUNEREGEX' -prune \\) -o $print_option" ||
- exit $?
- else
- # : A8
- $find $NETPATHS $FINDOPTIONS \( -type d -regex "$PRUNEREGEX" -prune \) -o $print_option ||
- exit $?
- fi
- fi
- } | tr / '\001' | $sort -f | tr '\001' / > $filelist
-
- # Compute the (at most 128) most common bigrams in the file list.
- $bigram $bigram_opts < $filelist | sort | uniq -c | sort -nr |
- awk '{ if (NR <= 128) print $2 }' | tr -d '\012' > $bigrams
-
- # Code the file list.
- $code $bigrams < $filelist > $LOCATE_DB.n
-
- rm -f $bigrams $filelist
-
- # To reduce the chances of 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
- rm -f $LOCATE_DB
- mv $LOCATE_DB.n $LOCATE_DB
- chmod 644 $LOCATE_DB
- else
- echo "updatedb: new database would be empty" >&2
- rm -f $LOCATE_DB.n
- fi
-
- fi
-
- exit 0
-