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PAM_OPEN_SESSION(3)	   App. Programmers' Manual	   PAM_OPEN_SESSION(3)

NAME
       pam_open/close_session - PAM session management

SYNOPSIS
       #include <security/pam_appl.h>

       int pam_open_session(pam_handle_t *pamh, int  flags);

       int pam_close_session(pam_handle_t *pamh, int  flags);

DESCRIPTION
       PAM provides management-hooks for the initialization and termination of
       a session.

       pam_open_session
	      Use this function to signal that an authenticated	 user  session
	      has  begun.  It should be called only after the user is properly
	      identified and (where necessary) has been granted their  creden‐
	      tials with pam_authenticate(3) and pam_setcred(3) respectively.

	      Some  types  of functions associated with session initialization
	      are logging for the purposes of system-audit and mounting direc‐
	      tories (the user's home directory for example). These should not
	      concern the application. It should be noted that	the  effective
	      uid,  geteuid(2),	 of  the  application  should be of sufficient
	      privilege to perform such tasks.

       pam_close_session
	      Use this function to signal that a user session has  terminated.
	      In  general this function may not need to be located in the same
	      application as the initialization function, pam_open_session.

	      Typically, this function will undo the actions of	 pam_open_ses‐
	      sion.   That is, log audit information concerning the end of the
	      user session or unmount the user's home  directory.  Apart  from
	      having  sufficient privilege the details of the session termina‐
	      tion should not concern the calling application. It is good pro‐
	      gramming	practice,  however,  to	 cease acting on behalf of the
	      user on returning from this call.

RETURN VALUE
       A successful return from the session management functions will be indi‐
       cated with PAM_SUCCESS.

       The  specific  error indicating a failure to open or close a session is
       PAM_SESSION_ERR.	 In general other return values may be returned.  They
       should be treated as indicating failure.

ERRORS
       May be translated to text with pam_strerror(3).

CONFORMING TO
       OSF-RFC 86.0, October 1995.

BUGS
       none known.

SEE ALSO
       pam_start(3),   pam_authenticate(3),  pam_setcred(3),  pam_get_item(3),
       pam_strerror(3) and pam(3).

       Also, see the three Linux-PAM Guides, for System administrators, module
       developers, and application developers.

Linux-PAM 0.55			  1997 Jan 4		   PAM_OPEN_SESSION(3)
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