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persistent data with Sun pam



Hello all,

I'm writing a pam module, which needs to run on linux and solaris, to track
failed logins.  Similar idea to pam_tally, but different functional spec.
Sadly I'm not aware of a clever method to trap failure of a pam_authenticate()
call, so am approaching this using a similar method to pam_tally: tallying
calls to the auth stack and assuming (potentially incorrectly) authentication
success when pam_acct_mgmt() is called.

I'd like to store tally data in the pam handle, but Sun's pam implementation
does not define PAM_DATA_REPLACE when pam_set_data() is called.  Is there a
clever but not-overly-inelegant way to replace data in such a way that the
cleanup routine knows when it is being called from pam_end()?  Or am I going
to have to resort to temp files...?

Keith

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