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Description of the statusfd mechanism:
Applications can now ask scdaemon to be notified about certain events
(card inserted/removed) on a specified file descriptor.
This is how it works:
Run gpg-agent in daemon mode.
Figure out scdaemons socket:
moritz@pink:~/g10/hacks/gnupg-mo/build/scd$ gpg-connect-agent
SCD GETINFO socket_name
D /tmp/gpg-QZRVNr/S.scdaemon
OK
Connect to scdaemon and register a status file descriptor:
moritz@pink:~/g10/hacks/gnupg-mo/build/scd$ gpg-connect-agent -S /tmp/gpg-QZRVNr/S.scdaemon
/sendfd /tmp/scd-events w
STATUSFD
OK
moritz@pink:~/g10/hacks/gnupg-mo/build/scd$
Watch the log file as you remove/insert the smartcard:
moritz@pink:~/g10/hacks/gnupg-mo/build/scd$ tail -f /tmp/scd-events
CARD REMOVED
CARD INSERTED
CARD REMOVED
CARD INSERTED
^C
moritz@pink:~/g10/hacks/gnupg-mo/build/scd$
That's it for now.
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