mirror of
https://github.com/moparisthebest/pacman
synced 2024-10-31 23:55:04 -04:00
259 lines
6.9 KiB
Bash
259 lines
6.9 KiB
Bash
#!/bin/bash -e
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#
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# pacman-db-upgrade - upgrade the local pacman db to a newer format
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# @configure_input@
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#
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# Copyright (c) 2010-2016 Pacman Development Team <pacman-dev@archlinux.org>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Avoid creating world-unreadable files
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umask 022
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# gettext initialization
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export TEXTDOMAIN='pacman-scripts'
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export TEXTDOMAINDIR='@localedir@'
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declare -r myver='@PACKAGE_VERSION@'
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m4_include(library/output_format.sh)
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m4_include(library/parseopts.sh)
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usage() {
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printf "pacman-db-upgrade (pacman) %s\n" "${myver}"
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echo
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printf -- "$(gettext "Upgrade the local pacman database to a newer format")\n"
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echo
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printf -- "$(gettext "Usage: %s [options]")\n" "$0"
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echo
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printf -- "$(gettext "options:")\n"
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printf -- "$(gettext " -d, --dbpath <path> set an alternate database location")\n"
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printf -- "$(gettext " -h, --help show this help message and exit")\n"
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printf -- "$(gettext " -r, --root <path> set an alternate installation root")\n"
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printf -- "$(gettext " -V, --version show version information and exit")\n"
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printf -- "$(gettext " --config <path> set an alternate configuration file")\n"
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printf -- "$(gettext " --nocolor disable colorized output messages")\n"
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echo
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}
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version() {
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printf "pacman-db-upgrade (pacman) %s\n" "$myver"
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printf -- "$(gettext "\
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Copyright (c) 2010-2016 Pacman Development Team <pacman-dev@archlinux.org>.\n\
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This is free software; see the source for copying conditions.\n\
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There is NO WARRANTY, to the extent permitted by law.\n")"
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}
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die() {
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error "$@"
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exit 1
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}
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die_r() {
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rm -f "$lockfile"
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die "$@"
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}
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get_opt_from_config() {
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local keyname="$1" conffile="$2"
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local key value
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while IFS=$'= \t' read -r key value _; do
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if [[ $key = $keyname ]]; then
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echo "$value"
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return
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fi
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done <"$conffile"
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}
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resolve_dir() {
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local d="$(cd "$1"; pwd -P)"
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[[ $d == */ ]] || d+=/
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printf "%s" "$d"
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}
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# PROGRAM START
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# determine whether we have gettext; make it a no-op if we do not
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if ! type gettext &>/dev/null; then
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gettext() {
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echo "$@"
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}
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fi
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USE_COLOR='y'
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OPT_SHORT="d:hr:V"
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OPT_LONG=('config:' 'dbpath:' 'help' 'nocolor' 'root:' 'version')
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if ! parseopts "$OPT_SHORT" "${OPT_LONG[@]}" -- "$@"; then
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exit 1 # E_INVALID_OPTION
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fi
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set -- "${OPTRET[@]}"
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unset OPT_SHORT OPT_LONG OPTRET
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while true; do
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case "$1" in
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--config) shift; conffile="$1" ;;
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-d|--dbpath) shift; dbroot="$1" ;;
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-r|--root) shift; pacroot="$1" ;;
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-h|--help) usage; exit 0 ;;
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--nocolor) USE_COLOR='n' ;;
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-V|--version) version; exit 0 ;;
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-- ) shift; break 2 ;;
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esac
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shift
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done
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conffile=${conffile:-@sysconfdir@/pacman.conf}
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[[ -z $pacroot ]] && pacroot="$(get_opt_from_config "RootDir" "$conffile")"
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[[ -z $dbroot ]] && dbroot="$(get_opt_from_config "DBPath" "$conffile")"
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[[ -z $dbroot && -n $pacroot ]] && dbroot="$pacroot/@localstatedir@/lib/pacman"
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[[ -z $pacroot ]] && pacroot="@rootdir@"
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[[ -z $dbroot ]] && dbroot="@localstatedir@/lib/pacman/"
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m4_include(library/term_colors.sh)
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if [[ ! -d $dbroot ]]; then
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die "$(gettext "%s does not exist or is not a directory.")" "$dbroot"
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fi
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if [[ ! -d $dbroot/local ]]; then
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die "$(gettext "%s is not a pacman database directory.")" "$dbroot"
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fi
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if [[ ! -w $dbroot ]]; then
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die "$(gettext "You must have correct permissions to upgrade the database.")"
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fi
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# strip any trailing slash from our dbroot
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dbroot="${dbroot%/}"
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# form the path to our lockfile location
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lockfile="${dbroot}/db.lck"
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# make sure pacman isn't running
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if [[ -f $lockfile ]]; then
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die "$(gettext "Pacman lock file was found. Cannot run while pacman is running.")"
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fi
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# do not let pacman run while we do this
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touch "$lockfile"
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if [[ -f "${dbroot}"/local/ALPM_DB_VERSION ]]; then
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db_version=$(cat "${dbroot}"/local/ALPM_DB_VERSION)
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fi
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if [[ -z "$db_version" ]]; then
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# pacman-3.4 to 3.5 upgrade - merge depends into desc
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if [[ $(find "$dbroot"/local -name depends) ]]; then
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msg "$(gettext "Pre-3.5 database format detected - upgrading...")"
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for i in "$dbroot"/local/*; do
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if [[ -f "$i"/depends ]]; then
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cat "$i"/depends >> "$i"/desc
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rm "$i"/depends
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fi
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done
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msg "$(gettext "Done.")"
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fi
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# pacman 4.1 to 4.2 upgrade - remove directory symlink support
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msg "$(gettext "Pre-4.2 database format detected - upgrading...")"
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dirlist=()
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unset GREP_OPTIONS
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while IFS= read -r dir; do
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dirlist+=("${pacroot}${dir%/}")
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done < <(grep -h '/$' "$dbroot"/local/*/files | sort -ru)
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mapfile -t dirlist < <(
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for dir in "${dirlist[@]}"; do
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[[ -L "$dir" ]] && echo "$dir"
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done)
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if [[ ${#dirlist[@]} != 0 ]]; then
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pacroot="$(resolve_dir "$pacroot")"
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for dir in "${dirlist[@]}"; do
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realdir="$(resolve_dir "$dir")"
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# verify realdir is inside root
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if [[ ${realdir:0:${#pacroot}} != $pacroot ]]; then
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warning "$(gettext "symlink '%s' points outside pacman root, manual repair required")" "$dir"
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continue
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fi
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# convert to an appropriate form for the replacement
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olddir="${dir:${#pacroot}}/"
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newdir="${realdir:${#pacroot}}"
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# construct the parents of the new directory
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parents=""
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parent="$(dirname "$newdir")"
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while [[ $parent != "." ]]; do
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parents+="$parent/\n"
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parent="$(dirname "$parent")"
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done
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for f in "$dbroot"/local/*/files; do
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awk -v "olddir=$olddir" -v "newdir=$newdir" -v "parents=$parents" '
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function print_path(path) {
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if (path != "" && !(path in seen)) {
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seen[path] = 1
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print path
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}
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}
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BEGIN {
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oldlen = length(olddir) + 1
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file = substr(newdir, 0, length(newdir) - 1)
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}
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{
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if ($0 == "") {
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# end of section, clear seen paths and print as-is
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for ( i in seen ) {
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delete seen[i]
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}
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print
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} else if ($0 == olddir) {
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# replace symlink with its target, including parents
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split(parents, paths, "\n")
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for (i in paths) {
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print_path(paths[i])
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}
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print_path(newdir)
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} else if ($0 == file) {
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# newdir already existed as a file, skip it
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} else if (index($0, olddir) == 1) {
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# update paths that were under olddir
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print_path(newdir substr($0, oldlen))
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} else {
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# print everything else as-is
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print_path($0)
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}
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}' "$f" > "$f.tmp"
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mv "$f.tmp" "$f"
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done
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done
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fi
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fi
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echo "9" > "$dbroot"/local/ALPM_DB_VERSION
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# remove the lock file
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rm -f "$lockfile"
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# vim: set noet:
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