autotool scripts/pacman-optimize

	- move scripts/pacman-optimize -> scripts/pacman-optimize.in
	- add -V --version options to scripts/pacman-optimize.in
	- add autotool commands to generate scripts/pacman-optimize

Signed-off-by: Andrew Fyfe <andrew@neptune-one.net>

1 files changed, 158 insertions, 0 deletions

diff --git a/scripts/pacman-optimize.in b/scripts/pacman-optimize.in
new file mode 100755
index 00000000..2bfec40e
--- /dev/null
+++ b/scripts/pacman-optimize.in
@@ -0,0 +1,158 @@
+#!/bin/bash
+# 
+#   pacman-optimize
+#  
+#   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.
+#
+
+myver='@PACKAGE_VERSION@'
+
+error() {
+	if [ "$USECOLOR" = "YES" -o "$USECOLOR" = "yes" ]; then
+		echo -e "\033[1;31m:: ERROR:\033[1;0m \033[1;1m$@\033[1;0m" >&2
+	else
+		echo ":: ERROR: $@" >&2
+	fi
+}
+
+source /etc/rc.conf #for USECOLOR
+source /etc/rc.d/functions
+
+usage() {
+	echo "pacman-optimize $myver"
+	echo "usage: $0 [pacman_db_root]"
+	echo 
+	echo "pacman-optimize is a little hack that should improve the performance"
+	echo "of pacman when reading/writing to its filesystem-based database."
+	echo
+	echo "Because pacman uses many small files to keep track of packages,"
+	echo "there is a tendency for these files to become fragmented over time."
+	echo "This script attempts to relocate these small files into one"
+	echo "continuous location on your hard drive.  The result is that the hard"
+	echo "drive should be able to read them faster, since the hard drive head"
+	echo "does not have to move around the disk as much."
+	echo
+}
+
+version() {
+	printf "pacman-optimize (pacman) %s\n" "$myver"
+	printf "Copyright (C) 2002-2007 Judd Vinet <jvinet@zeroflux.org>.\n"
+	echo
+	printf "This is free software; see the source for copying conditions.\n"
+	printf "There is NO WARRANTY, to the extent permitted by law.\n"
+	echo
+}
+
+die() {
+	error $@
+	exit 1
+}
+
+die_r() {
+	rm -f /tmp/pacman.lck
+	die $@
+}
+
+dbroot="/var/lib/pacman"
+
+if [ "$1" != "" ]; then
+	if [ "$1" = "-h" -o "$1" = "--help" ]; then
+		usage
+		exit 0
+	fi
+	if [ "$1" = "-V" -o "$1" = "--version" ]; then
+		version
+		exit 0
+	fi
+	dbroot="$1"
+fi
+
+# make sure pacman isn't running
+if [ -f /tmp/pacman.lck ]; then
+	die "Pacman lockfile was found.  Cannot run while pacman is running."
+fi
+
+if [ ! -d "$dbroot" ]; then
+	die "$dbroot does not exist or is not a directory"
+fi
+
+if [ ! -w "$dbroot" ]; then
+	die "You must have correct permissions to optimize the database"
+fi
+
+# do not let pacman run while we do this
+touch /tmp/pacman.lck
+
+# step 1: sum the old db
+stat_busy "Md5sum'ing the old database"
+find $dbroot -type f | sort | xargs md5sum > /tmp/pacsums.old
+stat_done
+
+# step 2: tar it up
+stat_busy "Tar'ing up $dbroot"
+cd $dbroot
+tar -czf /tmp/pacmanDB.tgz ./
+if [ $? -ne 0 ]; then
+	stat_fail
+	rm -f /tmp/pacmanDB.tgz /tmp/pacsums.old
+	die_r "tar'ing up $dbroot failed"
+fi
+stat_done
+
+# step 3: make and sum the new db
+stat_busy "Making and md5sum'ing the new db"
+mkdir $dbroot.new
+tar -zxpf /tmp/pacmanDB.tgz -C $dbroot.new/
+if [ $? -ne 0 ]; then
+       rm -f /tmp/pacmanDB.tgz /tmp/pacsums.old
+       rm -rf "$dbroot.new"
+       die_r "untar'ing $dbroot failed"
+fi
+find "$dbroot.new" -type f | sort | sed -e 's/pacman.new/pacman/g' |\
+		xargs md5sum > /tmp/pacsums.new
+stat_done
+
+# step 4: compare the sums
+stat_busy "Checking integrity"
+diff /tmp/pacsums.old /tmp/pacsums.new >/dev/null 2>&1
+if [ $? -ne 0 ]; then
+	# failed
+	stat_fail
+	# leave /tmp/pacsums.old and .new for checking to see what doesn't match up
+	rm -rf "$dbroot.new" /tmp/pacman.lck /tmp/pacmanDB.tgz
+	die_r "integrity check FAILED, reverting to old database"
+fi
+stat_done
+
+# step 5: remove the new temporary database and the old one
+#         and use the .tgz to replace the old one
+stat_busy "Putting the new database in place"
+rm -rf "$dbroot.new" "$dbroot"/*
+tar -zxpf /tmp/pacmanDB.tgz -C "$dbroot"/
+stat_done
+
+# remove the lock file, sum files, and .tgz of database
+rm -f /tmp/pacman.lck /tmp/pacsums.old /tmp/pacsums.new /tmp/pacmanDB.tgz
+
+echo
+echo "Finished.  Your pacman database has been optimized."
+echo
+
+exit 0
+
+# vim: set ts=2 sw=2 noet: