That's a known problem. Strictly confined snaps are not allowed to read/write to the system-wide /tmp, that would open the door to spying on other applications and more advanced malicious behaviours. Hence /tmp being remapped to /tmp/snap.chromium/tmp.
This is discussed in details there: https://forum.snapcraft.io/t /sharing-files-via-tmp/1613. ** Changed in: chromium-browser (Ubuntu) Status: New => Won't Fix -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to chromium-browser in Ubuntu. https://bugs.launchpad.net/bugs/1849437 Title: [snap] user has no permissions to open downloaded files if download folder is set to /tmp Status in chromium-browser package in Ubuntu: Won't Fix Bug description: After migrating from deb to snap in Ubuntu 19.10, I'm no longer able to open downloaded files. For convenience, I've set my download folder to /tmp - this directory gets automatically cleared after download. However, with snap, as a result, the files get physically saved to /tmp/snap.chromium/tmp. Because /tmp/snap.chromium/ directory is owned by root:root, with 700 permissions - nobody but root can view these files. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1849437/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
