Start smartcard service at startup in a raspberry pi

Question

I have a raspberry pi connected to smart card reader (OMNIKEY 3121). I installed all driver and libraries needed. In order to use the card reader it is necessary to activate its service:

sudo systemctl start pcscd

I want to start the service at startup. I tried with this commands:

sudo su
systemctl enable pcscd

Last command returned this:

Created symlink /etc/systemd/system/sockets.target.wants/pcscd.socket -> /lib/systemd/system/pcscd.socket

After reboot the service is inactive.

Do you know how can I enable this service at startup?

Answer 1

sudo systemctl enable pcscd will get it active at boot time.

Answer 2

You noted in a comment that the pcscd service starts another service pcscd.socket. You should edit the question and add this important information to it. With the command

rpi ~# systemctl enable pcscd

you have only enabled pcscd.socket as you can see at the link to enable the socket service:

Created symlink /etc/systemd/system/sockets.target.wants/pcscd.socket -> /lib/systemd/system/pcscd.socket

You should enable the service with

rpi ~$ sudo systemctl enable pcscd.service

After reboot you can monitor the services with:

rpi ~$ systemctl status pcscd.service
rpi ~$ systemctl status pcscd.socket
rpi ~$ systemctl cat pcscd.service
rpi ~$ systemctl cat pcscd.socket

Answer 3

Read first the question and every detail from that question before prematurely posting a pseudo-answer that is like coming from a parrot.

This is an open problem and the root cause can be found in the C source code of pcsc and in the way how it interacts with systemd. Read more here.