I am trying to setup a system such that a script gets executed everytime any USB storage device is mounted (in this case, automounted by systemd). Based on a few references here, here and here, systemd allows for the execution of custom scripts after a specific device is mounted, but these either:

  • Need a specific device or mountpoint.
  • Use udev, which triggers too early, and holds the mounting process.
  • Use audits or logs, which isn't very satisfying.

Is there anyway to be less specific in systemd units, allowing for the use of ExecStart after any succesful (auto)mount?

  • another unsatisfying solution is udisksctl monitor which shows each disk being mounted. – meuh Jul 14 '17 at 16:20
  • Have your USB storage the same number of partition? – user192526 Jul 16 '17 at 7:32
  • I have no knowledge about the drive's structure. All I know is that partitions are going to get automounted, and the script should trigger for every one of them. I'd like the solution to stay generic like that. – John WH Smith Jul 17 '17 at 12:33

I can only poiting the way.

 cat /etc/udev/rules.d/bb-clam.rules 
KERNEL=="sd[b-z]*", SUBSYSTEMS=="usb", TAG+="systemd", ENV{SYSTEMD_WANTS}="clamtk.service"

this triggers my unit clamtk.service `cat /etc/systemd/system/clamtk.service



ExecStart=/bin/bash -c "/usr/local/bin/clam"
ExecReload=/bin/kill -HUP $MAINPID



But this works only good if your unit is started as user, and the unit is triggerd also for usb-harddrives.

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