mirror of
https://github.com/moparisthebest/pacman
synced 2024-12-23 08:18:51 -05:00
164 lines
4.5 KiB
Bash
164 lines
4.5 KiB
Bash
#!/bin/bash
|
|
#
|
|
# pacman-optimize
|
|
# @configure_input@
|
|
#
|
|
# Copyright (c) 2002-2007 by Judd Vinet <jvinet@zeroflux.org>
|
|
#
|
|
# 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 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, write to the Free Software
|
|
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
|
# USA.
|
|
#
|
|
|
|
# gettext initialization
|
|
export TEXTDOMAIN='pacman'
|
|
export TEXTDOMAINDIR='@localedir@'
|
|
|
|
myver='@PACKAGE_VERSION@'
|
|
dbroot='@localstatedir@/lib/pacman/'
|
|
lockfile="${dbroot}db.lck"
|
|
|
|
msg() {
|
|
local mesg=$1; shift
|
|
printf "==> ${mesg}\n" "$@" >&2
|
|
}
|
|
|
|
error () {
|
|
local mesg=$1; shift
|
|
printf "==> ERROR: ${mesg}\n" "$@" >&2
|
|
}
|
|
|
|
usage() {
|
|
printf "pacman-optimize (pacman) %s\n\n" "$myver"
|
|
printf "$(gettext "Usage: %s [pacman_db_root]")\n\n" "$0"
|
|
printf "$(gettext "\
|
|
pacman-optimize is a little hack that should improve the performance\n\
|
|
of pacman when reading/writing to its filesystem-based database.\n\n")"
|
|
printf "$(gettext "\
|
|
Because pacman uses many small files to keep track of packages,\n\
|
|
there is a tendency for these files to become fragmented over time.\n\
|
|
This script attempts to relocate these small files into one\n\
|
|
continuous location on your hard drive. The result is that the hard\n\
|
|
drive should be able to read them faster, since the hard drive head\n\
|
|
does not have to move around the disk as much.\n")"
|
|
}
|
|
|
|
version() {
|
|
printf "pacman-optimize (pacman) %s\n" "$myver"
|
|
printf "$(gettext "\
|
|
Copyright (C) 2002-2007 Judd Vinet <jvinet@zeroflux.org>.\n\n\
|
|
This is free software; see the source for copying conditions.\n\
|
|
There is NO WARRANTY, to the extent permitted by law.\n")"
|
|
}
|
|
|
|
die() {
|
|
error "$@"
|
|
exit 1
|
|
}
|
|
|
|
die_r() {
|
|
rm -f "$lockfile"
|
|
die "$@"
|
|
}
|
|
|
|
if [ "$1" = "-h" -o "$1" = "--help" ]; then
|
|
usage
|
|
exit 0
|
|
fi
|
|
|
|
if [ "$1" = "-V" -o "$1" = "--version" ]; then
|
|
version
|
|
exit 0
|
|
fi
|
|
|
|
if [ "$1" != "" ]; then
|
|
dbroot="$1"
|
|
fi
|
|
|
|
# make sure diff is installed
|
|
if ! type diff >/dev/null 2>&1; then
|
|
die "$(gettext "diff tool was not found, please install diffutils.")"
|
|
fi
|
|
|
|
# make sure pacman isn't running
|
|
if [ -f "$lockfile" ]; then
|
|
die "$(gettext "Pacman lock file was found. Cannot run while pacman is running.")"
|
|
fi
|
|
|
|
if [ ! -d "$dbroot" ]; then
|
|
die "$(gettext "%s does not exist or is not a directory.")" "$dbroot"
|
|
fi
|
|
|
|
if [ ! -w "$dbroot" ]; then
|
|
die "$(gettext "You must have correct permissions to optimize the database.")"
|
|
fi
|
|
|
|
workdir=$(mktemp -d /tmp/pacman-optimize.XXXXXXXXXX) ||
|
|
die_r "$(gettext "ERROR: Can not create temp directory for database building.")\n" >&2
|
|
|
|
# do not let pacman run while we do this
|
|
touch "$lockfile"
|
|
|
|
# step 1: sum the old db
|
|
msg "$(gettext "MD5sum'ing the old database...")"
|
|
find "$dbroot" -type f | sort | xargs md5sum > "$workdir/pacsums.old"
|
|
|
|
# step 2: tar it up
|
|
msg "$(gettext "Tar'ing up %s...")" "$dbroot"
|
|
cd "$dbroot"
|
|
bsdtar -czf "$workdir/pacmanDB.tgz" ./
|
|
if [ $? -ne 0 ]; then
|
|
rm -rf "$workdir"
|
|
die_r "$(gettext "Tar'ing up %s failed.")" "$dbroot"
|
|
fi
|
|
|
|
# step 3: make and sum the new db
|
|
msg "$(gettext "Making and MD5sum'ing the new db...")"
|
|
mkdir "$dbroot.new"
|
|
bsdtar -zxpf "$workdir/pacmanDB.tgz" -C "$dbroot.new/"
|
|
if [ $? -ne 0 ]; then
|
|
rm -rf "$workdir"
|
|
die_r "$(gettext "Untar'ing %s failed.")" "$dbroot"
|
|
fi
|
|
find "$dbroot.new" -type f | sort | \
|
|
xargs md5sum | sed 's#.new/##' > "$workdir/pacsums.new"
|
|
|
|
# step 4: compare the sums
|
|
msg "$(gettext "Checking integrity...")"
|
|
diff "$workdir/pacsums.old" "$workdir/pacsums.new" >/dev/null 2>&1
|
|
if [ $? -ne 0 ]; then
|
|
# failed
|
|
# leave /tmp/pacsums.old and .new for checking to see what doesn't match up
|
|
rm -rf "$dbroot.new"
|
|
die_r "$(gettext "Integrity check FAILED, reverting to old database.")"
|
|
fi
|
|
|
|
# step 5: remove the new temporary database and the old one
|
|
# and use the .tgz to replace the old one
|
|
msg "$(gettext "Putting the new database in place...")"
|
|
rm -rf "$dbroot.new" "$dbroot"/*
|
|
bsdtar -zxpf "$workdir/pacmanDB.tgz" -C "$dbroot/"
|
|
|
|
# remove the lock file, sum files, and .tgz of database
|
|
rm -f "$lockfile"
|
|
rm -rf "$workdir"
|
|
|
|
echo
|
|
msg "$(gettext "Finished. Your pacman database has been optimized.")"
|
|
echo
|
|
|
|
exit 0
|
|
|
|
# vim: set ts=2 sw=2 noet:
|