| 1 | #! /bin/sh
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| 2 | # updatedb -- build a locate pathname database
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| 3 | # Copyright (C) 1994, 1996, 1997, 2000, 2001, 2003, 2004, 2005, 2006
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| 4 | # Free Software Foundation, Inc.
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| 5 |
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| 6 | # This program is free software; you can redistribute it and/or modify
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| 7 | # it under the terms of the GNU General Public License as published by
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| 8 | # the Free Software Foundation; either version 2, or (at your option)
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| 9 | # any later version.
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| 10 |
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| 11 | # This program is distributed in the hope that it will be useful,
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| 12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | # GNU General Public License for more details.
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| 15 |
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| 16 | # You should have received a copy of the GNU General Public License
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| 17 | # along with this program; if not, write to the Free Software
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| 18 | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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| 19 | # USA.
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| 20 |
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| 21 | # csh original by James Woods; sh conversion by David MacKenzie.
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| 22 |
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| 23 | #exec 2> /tmp/updatedb-trace.txt
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| 24 | #set -x
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| 25 |
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| 26 | usage="\
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| 27 | Usage: $0 [--findoptions='-option1 -option2...']
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| 28 | [--localpaths='dir1 dir2...'] [--netpaths='dir1 dir2...']
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| 29 | [--prunepaths='dir1 dir2...'] [--prunefs='fs1 fs2...']
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| 30 | [--output=dbfile] [--netuser=user] [--localuser=user]
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| 31 | [--old-format] [--version] [--help]
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| 32 |
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| 33 | Report bugs to <bug-findutils@gnu.org>."
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| 34 | changeto=/
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| 35 | old=no
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| 36 | for arg
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| 37 | do
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| 38 | # If we are unable to fork, the back-tick operator will
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| 39 | # fail (and the shell will emit an error message). When
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| 40 | # this happens, we exit with error value 71 (EX_OSERR).
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| 41 | # Alternative candidate - 75, EX_TEMPFAIL.
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| 42 | opt=`echo $arg|sed 's/^\([^=]*\).*/\1/'` || exit 71
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| 43 | val=`echo $arg|sed 's/^[^=]*=\(.*\)/\1/'` || exit 71
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| 44 | case "$opt" in
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| 45 | --findoptions) FINDOPTIONS="$val" ;;
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| 46 | --localpaths) SEARCHPATHS="$val" ;;
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| 47 | --netpaths) NETPATHS="$val" ;;
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| 48 | --prunepaths) PRUNEPATHS="$val" ;;
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| 49 | --prunefs) PRUNEFS="$val" ;;
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| 50 | --output) LOCATE_DB="$val" ;;
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| 51 | --netuser) NETUSER="$val" ;;
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| 52 | --localuser) LOCALUSER="$val" ;;
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| 53 | --old-format) old=yes ;;
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| 54 | --changecwd) changeto="$val" ;;
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| 55 | --version) echo "GNU updatedb version @VERSION@"; exit 0 ;;
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| 56 | --help) echo "$usage"; exit 0 ;;
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| 57 | *) echo "updatedb: invalid option $opt
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| 58 | $usage" >&2
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| 59 | exit 1 ;;
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| 60 | esac
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| 61 | done
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| 62 |
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| 63 | if test "$old" = yes; then
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| 64 | echo "Warning: future versions of findutils will shortly discontinue support for the old locate database format." >&2
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| 65 |
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| 66 | sort="@SORT@"
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| 67 | print_option="-print"
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| 68 | frcode_options=""
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| 69 | else
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| 70 | if @SORT_SUPPORTS_Z@
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| 71 | then
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| 72 | sort="@SORT@ -z"
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| 73 | print_option="-print0"
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| 74 | frcode_options="-0"
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| 75 | else
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| 76 | sort="@SORT@"
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| 77 | print_option="-print"
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| 78 | frcode_options=""
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| 79 | fi
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| 80 | fi
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| 81 |
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| 82 | getuid() {
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| 83 | # format of "id" output is ...
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| 84 | # uid=1(daemon) gid=1(other)
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| 85 | # for `id's that don't understand -u
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| 86 | id | cut -d'(' -f 1 | cut -d'=' -f2
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| 87 | }
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| 88 |
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| 89 | # figure out if su supports the -s option
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| 90 | select_shell() {
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| 91 | if su "$1" -s $SHELL -c false < /dev/null ; then
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| 92 | # No.
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| 93 | echo ""
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| 94 | else
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| 95 | if su "$1" -s $SHELL -c true < /dev/null ; then
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| 96 | # Yes.
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| 97 | echo "-s $SHELL"
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| 98 | else
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| 99 | # su is unconditionally failing. We won't be able to
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| 100 | # figure out what is wrong, so be conservative.
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| 101 | echo ""
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| 102 | fi
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| 103 | fi
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| 104 | }
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| 105 |
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| 106 |
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| 107 | # You can set these in the environment, or use command-line options,
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| 108 | # to override their defaults:
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| 109 |
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| 110 | # Any global options for find?
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| 111 | : ${FINDOPTIONS=}
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| 112 |
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| 113 | # What shell shoud we use? We should use a POSIX-ish sh.
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| 114 | : ${SHELL="/bin/sh"}
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| 115 |
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| 116 | # Non-network directories to put in the database.
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| 117 | : ${SEARCHPATHS="/"}
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| 118 |
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| 119 | # Network (NFS, AFS, RFS, etc.) directories to put in the database.
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| 120 | : ${NETPATHS=}
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| 121 |
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| 122 | # Directories to not put in the database, which would otherwise be.
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| 123 | : ${PRUNEPATHS="/tmp /usr/tmp /var/tmp /afs /amd /sfs"}
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| 124 |
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| 125 | # Trailing slashes result in regex items that are never matched, which
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| 126 | # is not what the user will expect. Therefore we now reject such
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| 127 | # constructs.
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| 128 | for p in $PRUNEPATHS; do
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| 129 | case "$p" in
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| 130 | /*/) echo "$0: $p: pruned paths should not contain trailing slashes" >&2
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| 131 | exit 1
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| 132 | esac
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| 133 | done
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| 134 |
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| 135 | # The same, in the form of a regex that find can use.
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| 136 | test -z "$PRUNEREGEX" &&
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| 137 | PRUNEREGEX=`echo $PRUNEPATHS|sed -e 's,^,\\\(^,' -e 's, ,$\\\)\\\|\\\(^,g' -e 's,$,$\\\),'`
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| 138 |
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| 139 | # The database file to build.
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| 140 | : ${LOCATE_DB=@LOCATE_DB@}
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| 141 |
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| 142 | # Directory to hold intermediate files.
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| 143 | if test -d /var/tmp; then
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| 144 | : ${TMPDIR=/var/tmp}
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| 145 | elif test -d /usr/tmp; then
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| 146 | : ${TMPDIR=/usr/tmp}
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| 147 | else
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| 148 | : ${TMPDIR=/tmp}
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| 149 | fi
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| 150 | export TMPDIR
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| 151 |
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| 152 | # The user to search network directories as.
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| 153 | : ${NETUSER=daemon}
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| 154 |
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| 155 | # The directory containing the subprograms.
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| 156 | if test -n "$LIBEXECDIR" ; then
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| 157 | : LIBEXECDIR already set, do nothing
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| 158 | else
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| 159 | : ${LIBEXECDIR=@libexecdir@}
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| 160 | fi
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| 161 |
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| 162 | # The directory containing find.
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| 163 | if test -n "$BINDIR" ; then
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| 164 | : BINDIR already set, do nothing
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| 165 | else
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| 166 | : ${BINDIR=@bindir@}
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| 167 | fi
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| 168 |
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| 169 | # The names of the utilities to run to build the database.
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| 170 | : ${find:=${BINDIR}/@find@}
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| 171 | : ${frcode:=${LIBEXECDIR}/@frcode@}
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| 172 | : ${bigram:=${LIBEXECDIR}/@bigram@}
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| 173 | : ${code:=${LIBEXECDIR}/@code@}
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| 174 |
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| 175 |
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| 176 | checkbinary () {
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| 177 | if test -x "$1" ; then
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| 178 | : ok
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| 179 | else
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| 180 | eval echo "updatedb needs to be able to execute $1, but cannot." >&2
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| 181 | exit 1
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| 182 | fi
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| 183 | }
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| 184 |
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| 185 | for binary in $find $frcode $bigram $code
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| 186 | do
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| 187 | checkbinary $binary
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| 188 | done
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| 189 |
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| 190 |
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| 191 | PATH=/bin:/usr/bin:${BINDIR}; export PATH
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| 192 |
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| 193 | : ${PRUNEFS="nfs NFS proc afs proc smbfs autofs iso9660 ncpfs coda devpts ftpfs devfs mfs sysfs shfs"}
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| 194 |
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| 195 | if test -n "$PRUNEFS"; then
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| 196 | prunefs_exp=`echo $PRUNEFS |sed -e 's/\([^ ][^ ]*\)/-o -fstype \1/g' \
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| 197 | -e 's/-o //' -e 's/$/ -o/'`
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| 198 | else
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| 199 | prunefs_exp=''
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| 200 | fi
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| 201 |
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| 202 | # Make and code the file list.
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| 203 | # Sort case insensitively for users' convenience.
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| 204 |
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| 205 | rm -f $LOCATE_DB.n
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| 206 | trap 'rm -f $LOCATE_DB.n; exit' HUP TERM
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| 207 |
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| 208 | if test $old = no; then
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| 209 |
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| 210 | # FIXME figure out how to sort null-terminated strings, and use -print0.
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| 211 | if {
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| 212 | cd "$changeto"
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| 213 | if test -n "$SEARCHPATHS"; then
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| 214 | if [ "$LOCALUSER" != "" ]; then
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| 215 | # : A1
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| 216 | su $LOCALUSER `select_shell $LOCALUSER` -c \
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| 217 | "$find $SEARCHPATHS $FINDOPTIONS \
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| 218 | \\( $prunefs_exp \
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| 219 | -type d -regex '$PRUNEREGEX' \\) -prune -o $print_option"
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| 220 | else
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| 221 | # : A2
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| 222 | $find $SEARCHPATHS $FINDOPTIONS \
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| 223 | \( $prunefs_exp \
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| 224 | -type d -regex "$PRUNEREGEX" \) -prune -o $print_option
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| 225 | fi
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| 226 | fi
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| 227 |
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| 228 | if test -n "$NETPATHS"; then
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| 229 | myuid=`getuid`
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| 230 | if [ "$myuid" = 0 ]; then
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| 231 | # : A3
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| 232 | su $NETUSER `select_shell $NETUSER` -c \
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| 233 | "$find $NETPATHS $FINDOPTIONS \\( -type d -regex '$PRUNEREGEX' -prune \\) -o $print_option" ||
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| 234 | exit $?
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| 235 | else
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| 236 | # : A4
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| 237 | $find $NETPATHS $FINDOPTIONS \( -type d -regex "$PRUNEREGEX" -prune \) -o $print_option ||
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| 238 | exit $?
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| 239 | fi
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| 240 | fi
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| 241 | } | $sort -f | $frcode $frcode_options > $LOCATE_DB.n
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| 242 | then
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| 243 | : OK so far
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| 244 | true
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| 245 | else
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| 246 | rv=$?
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| 247 | echo "Failed to generate $LOCATE_DB.n" >&2
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| 248 | rm -f $LOCATE_DB.n
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| 249 | exit $rv
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| 250 | fi
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| 251 |
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| 252 | # To avoid breaking locate while this script is running, put the
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| 253 | # results in a temp file, then rename it atomically.
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| 254 | if test -s $LOCATE_DB.n; then
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| 255 | rm -f $LOCATE_DB
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| 256 | mv $LOCATE_DB.n $LOCATE_DB
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| 257 | chmod 644 $LOCATE_DB
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| 258 | else
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| 259 | echo "updatedb: new database would be empty" >&2
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| 260 | rm -f $LOCATE_DB.n
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| 261 | fi
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| 262 |
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| 263 | else # old
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| 264 |
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| 265 | if ! bigrams=`mktemp -t updatedbXXXXXXXXX`; then
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| 266 | echo tempfile failed
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| 267 | exit 1
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| 268 | fi
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| 269 |
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| 270 | if ! filelist=`mktemp -t updatedbXXXXXXXXX`; then
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| 271 | echo tempfile failed
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| 272 | exit 1
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| 273 | fi
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| 274 |
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| 275 | rm -f $LOCATE_DB.n
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| 276 | trap 'rm -f $bigrams $filelist $LOCATE_DB.n; exit' HUP TERM
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| 277 |
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| 278 | # Alphabetize subdirectories before file entries using tr. James Woods says:
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| 279 | # "to get everything in monotonic collating sequence, to avoid some
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| 280 | # breakage i'll have to think about."
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| 281 | {
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| 282 | cd "$changeto"
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| 283 | if test -n "$SEARCHPATHS"; then
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| 284 | if [ "$LOCALUSER" != "" ]; then
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| 285 | # : A5
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| 286 | su $LOCALUSER `select_shell $LOCALUSER` -c \
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| 287 | "$find $SEARCHPATHS $FINDOPTIONS \
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| 288 | \( $prunefs_exp \
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| 289 | -type d -regex '$PRUNEREGEX' \) -prune -o $print_option" || exit $?
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| 290 | else
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| 291 | # : A6
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| 292 | $find $SEARCHPATHS $FINDOPTIONS \
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| 293 | \( $prunefs_exp \
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| 294 | -type d -regex "$PRUNEREGEX" \) -prune -o $print_option || exit $?
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| 295 | fi
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| 296 | fi
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| 297 |
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| 298 | if test -n "$NETPATHS"; then
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| 299 | myuid=`getuid`
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| 300 | if [ "$myuid" = 0 ]; then
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| 301 | # : A7
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| 302 | su $NETUSER `select_shell $NETUSER` -c \
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| 303 | "$find $NETPATHS $FINDOPTIONS \\( -type d -regex '$PRUNEREGEX' -prune \\) -o $print_option" ||
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| 304 | exit $?
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| 305 | else
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| 306 | # : A8
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| 307 | $find $NETPATHS $FINDOPTIONS \( -type d -regex "$PRUNEREGEX" -prune \) -o $print_option ||
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| 308 | exit $?
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| 309 | fi
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| 310 | fi
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| 311 | } | tr / '\001' | $sort -f | tr '\001' / > $filelist
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| 312 |
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| 313 | # Compute the (at most 128) most common bigrams in the file list.
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| 314 | $bigram $bigram_opts < $filelist | sort | uniq -c | sort -nr |
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| 315 | awk '{ if (NR <= 128) print $2 }' | tr -d '\012' > $bigrams
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| 316 |
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| 317 | # Code the file list.
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| 318 | $code $bigrams < $filelist > $LOCATE_DB.n
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| 319 |
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| 320 | rm -f $bigrams $filelist
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| 321 |
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| 322 | # To reduce the chances of breaking locate while this script is running,
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| 323 | # put the results in a temp file, then rename it atomically.
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| 324 | if test -s $LOCATE_DB.n; then
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| 325 | rm -f $LOCATE_DB
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| 326 | mv $LOCATE_DB.n $LOCATE_DB
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| 327 | chmod 644 $LOCATE_DB
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| 328 | else
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| 329 | echo "updatedb: new database would be empty" >&2
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| 330 | rm -f $LOCATE_DB.n
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| 331 | fi
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| 332 |
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| 333 | fi
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| 334 |
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| 335 | exit 0
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