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NetBSD 6.1.5 - man page for pam_get_user (netbsd section 3)

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PAM_GET_USER(3) 		   BSD Library Functions Manual 		  PAM_GET_USER(3)

     pam_get_user -- retrieve user name

     Pluggable Authentication Module Library (libpam, -lpam)

     #include <sys/types.h>
     #include <security/pam_appl.h>

     pam_get_user(pam_handle_t *pamh, const char **user, const char *prompt);

     The pam_get_user function returns the name of the target user, as specified to pam_start(3).
     If no user was specified, nor set using pam_set_item(3), pam_get_user will prompt for a user
     name.  Either way, a pointer to the user name is stored in the location pointed to by the
     user argument.

     The prompt argument specifies a prompt to use if no user name is cached.  If it is NULL, the
     PAM_USER_PROMPT item will be used.  If that item is also NULL, a hardcoded default prompt
     will be used.  Either way, the prompt is expanded using openpam_subst(3) before it is passed
     to the conversation function.

     If pam_get_user is called from a module and the user_prompt option is set in the policy
     file, the value of that option takes precedence over both the prompt argument and the
     PAM_USER_PROMPT item.

     The pam_get_user function returns one of the following values:

     [PAM_BUF_ERR]	 Memory buffer error.

     [PAM_CONV_ERR]	 Conversation failure.

     [PAM_SYSTEM_ERR]	 System error.

     openpam_subst(3), pam(3), pam_get_authtok(3), pam_get_item(3), pam_set_item(3),
     pam_start(3), pam_strerror(3)

     X/Open Single Sign-On Service (XSSO) - Pluggable Authentication Modules, June 1997.

     The pam_get_user function and this manual page were developed for the FreeBSD Project by
     ThinkSec AS and Network Associates Laboratories, the Security Research Division of Network
     Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 (``CBOSS''), as part of the
     DARPA CHATS research program.

BSD					December 18, 2011				      BSD
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