I'm using Linux-Pam on an embedded linux device, where most the root
directory is read-only. I compile Linux-Pam and other software with
--prefix=/opt where addition libraries and applications can be stored
and run from usb. It seems that the default location for 'passwd',
'shadow', and pam.d conf file locations is very much hard-coded to /etc.
I tried running the following command to change all occurrences of /etc
to /opt/etc, hoping that I then could store passwd/shadow files in
/opt/etc, and have pam reference those for authentication.
find . -type f -exec sed -i 's,\/etc,\/opt\/etc,g' {} \;
I can now successfully store all the pam.d files in /opt/etc/pam.d, but
no matter what I try, pam still reference /etc for passwd/shadow. Any
occurrence of passwd or shadow when grepping through the code seems to
all begin with the /opt prefix.
I use pam for ssh and openvpn authentication (also in tandem with google
two-factor authentication) , and in particular would like to use
pam_unix to handle this. It works fine when logging in with users found
in the default /etc location, but it is much more practical for me to
maintain my own passwd file in it's own location for the uses mentioned.
thanks for any tips
Lance
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