bundles/backup-client: add backup-pre-hooks (fixes #24)

bundles/backup-client/files/check_backup_last_run

@@ -27,6 +27,12 @@ elif status[0] == 'rsync_error':
         ', '.join(status[1:])
     ))
     exit(2)
+elif status[0] == 'hook':
+    print('run-parts /etc/backup-pre-hook.d failed with exit code {}'.format(status[1]))
+    exit(2)
+elif status[0] == 'abort_no_key':
+    print('no ssh key found in /etc/backup.priv!')
+    exit(1)
 else:
     # garbage in file
     print(' '.join(status))

bundles/backup-client/files/generate-backup

@@ -9,6 +9,14 @@ then
     exit 1
 fi
 
+run-parts --exit-on-error -- /etc/backup-pre-hooks.d
+exitcode=$?
+if [[ $exitcode != 0]]
+then
+    echo "hook $exitcode" > "$statusfile"
+    exit 1
+fi
+
 rsync_errors=""
 % for path in sorted(paths):
 rsync -zaAP --numeric-ids --delete --relative \