fs: check if writing md5sum to full.sum file fails

writing to file might fail (permission denied, disk full), check for errors.

1 files changed, 11 insertions, 3 deletions

diff --git a/src/live/ogOperations.py b/src/live/ogOperations.py
index 0a75630..ea9f5cb 100644
--- a/src/live/ogOperations.py
+++ b/src/live/ogOperations.py
@@ -122,8 +122,14 @@ class OgLiveOperations:
             raise ValueError('Invalid image path when computing md5 checksum')
         filename = path + ".full.sum"
         dig = self._compute_md5(path)
-        with open(filename, 'w') as f:
-            f.write(dig)
+        try:
+            with open(filename, 'w') as f:
+                f.write(dig)
+        except:
+            logging.error(f'cannot write {filename}')
+            return -1
+
+        return 0
 
     def _copy_image_to_cache(self, image_name):
         """
@@ -515,7 +521,9 @@ class OgLiveOperations:
         image_info.perms = perms
         image_info.mtime = mtime
 
-        self._write_md5_file(f'/opt/opengnsys/images/{name}.img')
+        if self._write_md5_file(f'/opt/opengnsys/images/{name}.img') == -1:
+            logging.error(f'cannot write {name}.full.sum file')
+            raise ValueError(f'Error: Cannot write {name}.full.sum file')
 
         self._restartBrowser(self._url)