Manual Pages for UNIX Operating System command usage for man pam_get_data

PAM Library Functions                          pam_set_data(3PAM)



NAME
     pam_set_data, pam_get_data - PAM routines to maintain module
     specific state

SYNOPSIS
     cc [ flag ... ] file ... -lpam [ library ... ]
     #include 

     int pam_set_data(pam_handle_t *pamh,
          const char *module_data_name, void *data,
          void  (*cleanup) (pam_handle_t *pamh, void *data,
          int pam_end_status));


     int pam_get_data(const pam_handle_t *pamh,
          const char *module_data_name, const void **data);


DESCRIPTION
     The pam_set_data() and pam_get_data()  functions  allow  PAM
     service  modules to access and update module specific infor-
     mation as needed. These functions  should  not  be  used  by
     applications.


     The pam_set_data()  function  stores  module  specific  data
     within  the   PAM handle pamh. The module_data_name argument
     uniquely  identifies  the  data,  and  the   data   argument
     represents  the  actual  data. The module_data_name argument
     should be unique across all services.


     The cleanup function frees up any memory used  by  the  data
     after  it  is no longer needed, and is invoked by pam_end().
     The cleanup function takes as its arguments a pointer to the
     PAM  handle, pamh, a pointer to the actual data, data, and a
     status code,  pam_end_status.  The  status  code  determines
     exactly what state information needs to be  purged.


     If pam_set_data() is called and module data  already  exists
     from   a  prior  call  to   pam_set_data()  under  the  same
     module_data_name, then the existing data is replaced by  the
     new  data,  and the existing cleanup function is replaced by
     the new cleanup function.


     The pam_get_data() function retrieves  module-specific  data
     stored  in  the   PAM handle, pamh, identified by the unique
     name, module_data_name. The data argument  is  assigned  the
     address  of  the  requested  data.  The   data  retrieved by
     pam_get_data() should not be modified or  freed.   The  data



SunOS 5.11          Last change: 13 Oct 1998                    1






PAM Library Functions                          pam_set_data(3PAM)



     will be released by pam_end().

RETURN VALUES
     In addition to the return values listed  in  pam(3PAM),  the
     following value may also be returned:

     PAM_NO_MODULE_DATA    No module specific data is present.


ATTRIBUTES
     See attributes(5) for description of  the  following  attri-
     butes:



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | MT-Safe with exceptions     |
    |_____________________________|_____________________________|


SEE ALSO
     pam(3PAM), pam_end(3PAM), libpam(3LIB), attributes(5)

NOTES
     The interfaces in  libpam are MT-Safe only  if  each  thread
     within  the multithreaded application uses its own  PAM han-
     dle.
























SunOS 5.11          Last change: 13 Oct 1998                    2