diff options
| -rw-r--r-- | scripts/repo-add.sh.in | 38 |
1 files changed, 26 insertions, 12 deletions
diff --git a/scripts/repo-add.sh.in b/scripts/repo-add.sh.in index 280c0240..fd05b48b 100644 --- a/scripts/repo-add.sh.in +++ b/scripts/repo-add.sh.in @@ -640,37 +640,51 @@ if (( success )); then msg "$(gettext "Creating updated database file '%s'")" "$REPO_DB_FILE" TAR_OPT=$(verify_repo_extension "$REPO_DB_FILE") + # $LOCKFILE is already guaranteed to be absolute so this is safe + dirname=${LOCKFILE%/*} filename=${REPO_DB_FILE##*/} + # this ensures we create it on the same filesystem, making moves atomic + tempname="$dirname/.tmp.$filename" pushd "$tmpdir/tree" >/dev/null if ( shopt -s nullglob; files=(*); (( ${#files[*]} )) ); then - bsdtar -c${TAR_OPT}f "$tmpdir/$filename" * + bsdtar -c${TAR_OPT}f "$tempname" * else # we have no packages remaining? zip up some emptyness warning "$(gettext "No packages remain, creating empty database.")" - bsdtar -c${TAR_OPT}f "$tmpdir/$filename" -T /dev/null + bsdtar -c${TAR_OPT}f "$tempname" -T /dev/null fi popd >/dev/null - create_signature "$tmpdir/$filename" + create_signature "$tempname" - [[ -f $REPO_DB_FILE ]] && mv -f "$REPO_DB_FILE" "${REPO_DB_FILE}.old" + # hardlink or move the previous version of the database and signature to .old + # extension as a backup measure + if [[ -f $REPO_DB_FILE ]]; then + ln -f "$REPO_DB_FILE" "$REPO_DB_FILE.old" 2>/dev/null || \ + mv -f "$REPO_DB_FILE" "$REPO_DB_FILE.old" + fi if [[ -f $REPO_DB_FILE.sig ]]; then - mv -f "$REPO_DB_FILE.sig" "$REPO_DB_FILE.old.sig" + ln -f "$REPO_DB_FILE.sig" "$REPO_DB_FILE.old.sig" 2>/dev/null || \ + mv -f "$REPO_DB_FILE.sig" "$REPO_DB_FILE.old.sig" else rm -f "$REPO_DB_FILE.old.sig" fi - [[ -f $tmpdir/$filename ]] && mv "$tmpdir/$filename" "$REPO_DB_FILE" - [[ -f $tmpdir/$filename.sig ]] && mv "$tmpdir/$filename.sig" "$REPO_DB_FILE.sig" + + # rotate the newly-created database and signature into place + mv "$tempname" "$REPO_DB_FILE" + if [[ -f $tempname.sig ]]; then + mv "$tempname.sig" "$REPO_DB_FILE.sig" + fi + dblink="${REPO_DB_FILE%.tar*}" - target=${REPO_DB_FILE##*/} rm -f "$dblink" "$dblink.sig" - ln -s "$target" "$dblink" 2>/dev/null || \ - ln "$target" "$dblink" 2>/dev/null || \ + ln -s "$filename" "$dblink" 2>/dev/null || \ + ln "$filename" "$dblink" 2>/dev/null || \ cp "$REPO_DB_FILE" "$dblink" if [[ -f "$REPO_DB_FILE.sig" ]]; then - ln -s "$target.sig" "$dblink.sig" 2>/dev/null || \ - ln "$target.sig" "$dblink.sig" 2>/dev/null || \ + ln -s "$filename.sig" "$dblink.sig" 2>/dev/null || \ + ln "$filename.sig" "$dblink.sig" 2>/dev/null || \ cp "$REPO_DB_FILE.sig" "$dblink.sig" fi else |