contrib/libpam/doc/figs/pam_orient.txt

   1
   2
   3
   4          +----------------+
   5          | application: X |
   6          +----------------+       /  +----------+     +================+
   7          | authentication-[---->--\--] Linux-   |--<--| /etc/pam.conf  |
   8          |       +        [----<--/--]   PAM    |     |================|
   9          |[conversation()][--+    \  |          |     | X auth .. a.so |
  10          +----------------+  |    /  +-n--n-----+     | X auth .. b.so |
  11          |                |  |       __|  |           |           _____/
  12          |  service user  |  A      |     |           |____,-----'
  13          |                |  |      V     A
  14          +----------------+  +------|-----|---------+ -----+------+
  15                                 +---u-----u----+    |      |      |
  16                                 |   auth....   |--[ a ]--[ b ]--[ c ]
  17                                 +--------------+
  18                                 |   acct....   |--[ b ]--[ d ]
  19                                 +--------------+
  20                                 |   password   |--[ b ]--[ c ]
  21                                 +--------------+
  22                                 |   session    |--[ e ]--[ c ]
  23                                 +--------------+