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Extend database upgrade script to handle alpm db version 9

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Original-work-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
This commit is contained in:
Andrew Gregory 2014-08-20 20:46:08 +00:00 committed by Allan McRae
parent e4773b1b82
commit 793b9c3b42
1 changed files with 86 additions and 10 deletions
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96
scripts/pacman-db-upgrade.sh.in
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@ -76,6 +76,12 @@ get_opt_from_config() {
done <"$conffile"
}
resolve_dir() {
local d="$(cd "$1"; pwd -P)"
[[ $d == */ ]] || d+=/
printf "%s" "$d"
}
# PROGRAM START
# determine whether we have gettext; make it a no-op if we do not
@ -143,18 +149,88 @@ fi
# do not let pacman run while we do this
touch "$lockfile"
# pacman-3.4 to 3.5 upgrade - merge depends into desc
if [[ $(find "$dbroot"/local -name depends) ]]; then
msg "$(gettext "Pre-3.5 database format detected - upgrading...")"
for i in "$dbroot"/local/*; do
if [[ -f "$i"/depends ]]; then
cat "$i"/depends >> "$i"/desc
rm "$i"/depends
fi
done
msg "$(gettext "Done.")"
if [[ -f "${dbroot}"/local/ALPM_DB_VERSION ]]; then
db_version=$(cat "${dbroot}"/local/ALPM_DB_VERSION)
fi
if [[ -z "$db_version" ]]; then
# pacman-3.4 to 3.5 upgrade - merge depends into desc
if [[ $(find "$dbroot"/local -name depends) ]]; then
msg "$(gettext "Pre-3.5 database format detected - upgrading...")"
for i in "$dbroot"/local/*; do
if [[ -f "$i"/depends ]]; then
cat "$i"/depends >> "$i"/desc
rm "$i"/depends
fi
done
msg "$(gettext "Done.")"
fi
# pacman 4.1 to 4.2 upgrade - remove directory symlink support
dirlist=()
unset GREP_OPTIONS
while IFS= read -r dir; do
dirlist+=("${pacroot}${dir%/}")
done < <(grep -h '/$' "$dbroot"/local/*/files | sort -ru)
mapfile -t dirlist < <(find "${dirlist[@]}" -maxdepth 0 -type l)
if [[ ${#dirlist[@]} != 0 ]]; then
msg "$(gettext "Pre-4.2 database format detected - upgrading...")"
pacroot="$(resolve_dir "$pacroot")"
for dir in "${dirlist[@]}"; do
realdir="$(resolve_dir "$dir")"
# verify realdir is inside root
if [[ ${realdir:0:${#pacroot}} != $pacroot ]]; then
warning "$(gettext "symlink '%s' points outside pacman root, manual repair required")" "$dir"
continue
fi
# convert to an appropriate form for the replacement
olddir="${dir:${#pacroot}}/"
newdir="${realdir:${#pacroot}}"
# construct the parents of the new directory
parents=""
parent="$(dirname "$newdir")"
while [[ $parent != "." ]]; do
parents+="$parent/\n"
parent="$(dirname "$parent")"
done
for f in "$dbroot"/local/*/files; do
awk -v "olddir=$olddir" -v "newdir=$newdir" -v "parents=$parents" '
BEGIN {
i = length(olddir) + 1
file = substr(newdir, 0, length(newdir) - 1)
}
{
if ($0 == olddir) {
# replace symlink with its target, including parents
printf("%s", parents)
printf("%s\n", newdir)
} else if ($0 == file) {
# newdir already existed as a file, skip it
} else if (index($0, olddir) == 1) {
# update paths that were under olddir
printf("%s%s\n", newdir, substr($0, i))
} else {
# print everything else as-is
print
}
}' "$f" | grep . | LC_ALL=C sort -u > "$f.tmp"
mv "$f.tmp" "$f"
done
done
fi
fi
echo "9" > "$dbroot"/local/ALPM_DB_VERSION
# remove the lock file
rm -f "$lockfile"