Signed-off-by: Allan McRae <[email protected]>
---
 scripts/pacman-db-upgrade.sh.in | 46 ++++++++++++++++++++++++++++++++---------
 1 file changed, 36 insertions(+), 10 deletions(-)

diff --git a/scripts/pacman-db-upgrade.sh.in b/scripts/pacman-db-upgrade.sh.in
index a1630c5..d2cd78d 100644
--- a/scripts/pacman-db-upgrade.sh.in
+++ b/scripts/pacman-db-upgrade.sh.in
@@ -109,18 +109,44 @@ 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 "$(gettext "Done.")"
+       fi
+
+       # pacman 4.1 to 4.2 upgrade - remove directory symlink support
+       dirlist=()
+
+       unset GREP_OPTIONS
+       while IFS= read -r dir; do
+               dirlist+=("/${dir%/}")
+       done < <(grep -h '/$' "$dbroot"/local/*/files | sort -u)
+
+       mapfile -t dirlist < <(find "${dirlist[@]}" -maxdepth 0 -type l)
+
+       if [[ ${#dirlist[@]} != 0 ]]; then
+               msg "$(gettext "Pre-4.2 database format detected - 
upgrading...")"
+               for dir in ${dirlist[@]}; do
+                       realdir=( $(cd $dir; pwd -P) )
+                       sed -i "s#^${dir#/}/#${realdir#/}/#" 
"$dbroot"/local/*/files
+               done
+       fi
+fi
+
+echo "9" > "$dbroot"/local/.alpm_db_version
+
 # remove the lock file
 rm -f "$lockfile"
 
-- 
1.8.3.3


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