what is up with /etc/pam.d?

[Tom Horsley]

I've never looked at or modified any files in /etc/pam.d
till I happened to notice some *.rpmnew files in there.

Now I see a bunch of files that are symlinks to
other files with -ac on the end, but also have
versions that are *.rpmnew.

rpm queries show that the pam rpm owns the
files without the -ac and the authconfig rpm
owns the ones with the -ac suffix.

So now, what should really be in /etc/pam.d?

[root at zooty pam.d]# pwd
/etc/pam.d
[root at zooty pam.d]# ls -l smartcard-auth*
lrwxrwxrwx. 1 root root  17 May 31 17:02 smartcard-auth -> smartcard-auth-ac
-rw-r--r--. 1 root root 754 May 31 17:25 smartcard-auth-ac
-rw-r--r--  1 root root 743 May  9 05:21 smartcard-auth.rpmnew
[root at zooty pam.d]# rpm -q -f /etc/pam.d/smartcard-auth              
pam-1.1.5-6.fc17.x86_64
[root at zooty pam.d]# rpm -q -f /etc/pam.d/smartcard-auth-ac           
authconfig-6.2.1-1.fc17.x86_64