d/postinst: fixup userid for older termproxy tasks

At the time when we can fix this up the new (and possibly an old)
server daemon process is running, so use the flock CLI tool from
util-linux to ensure we do the same locking as the server and thus we
avoid a race condition.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

diff --git a/debian/postinst b/debian/postinst
index b416b7e89d3e42034678f2c3af8109116d5de86a..9ab787989ff63d493affcbdcb556c95d9583206b 100644 (file)
--- a/debian/postinst
+++ b/debian/postinst
@@ -14,6 +14,13 @@ case "$1" in
                _dh_action=start
        fi
        deb-systemd-invoke $_dh_action proxmox-backup.service proxmox-backup-proxy.service >/dev/null || true
+
+       if test -n "$2"; then
+               if dpkg --compare-versions "$2" 'le' '0.8.10-1'; then
+                       echo "Fixing up termproxy user id in task log..."
+                       flock -w 30 /var/log/proxmox-backup/tasks/active.lock sed -i 's/:termproxy::root: /:termproxy::root@pam: /' /var/log/proxmox-backup/tasks/active
+               fi
+       fi
     ;;
 
     abort-upgrade|abort-remove|abort-deconfigure)