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

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PAM_AUTHENTICATE(3)		   BSD Library Functions Manual 	      PAM_AUTHENTICATE(3)

     pam_authenticate -- perform authentication within the PAM framework

     Pluggable Authentication Module Library (libpam, -lpam)

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

     pam_authenticate(pam_handle_t *pamh, int flags);

     The pam_authenticate function attempts to authenticate the user associated with the pam con-
     text specified by the pamh argument.

     The application is free to call pam_authenticate as many times as it wishes, but some mod-
     ules may maintain an internal retry counter and return PAM_MAXTRIES when it exceeds some
     preset or hardcoded limit.

     The flags argument is the binary or of zero or more of the following values:

     PAM_SILENT 	 Do not emit any messages.

			 Fail if the user's authentication token is null.

     If any other bits are set, pam_authenticate will return PAM_SYMBOL_ERR.

     The pam_authenticate function returns one of the following values:

     [PAM_ABORT]	 General failure.

			 Authentication information is unavailable.

     [PAM_AUTH_ERR]	 Authentication error.

     [PAM_BUF_ERR]	 Memory buffer error.

     [PAM_CONV_ERR]	 Conversation failure.

			 Insufficient credentials.

     [PAM_MAXTRIES]	 Maximum number of tries exceeded.

     [PAM_PERM_DENIED]	 Permission denied.

     [PAM_SERVICE_ERR]	 Error in service module.

     [PAM_SYMBOL_ERR]	 Invalid symbol.

     [PAM_SYSTEM_ERR]	 System error.

     [PAM_USER_UNKNOWN]  Unknown user.

     pam(3), pam_strerror(3)

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

     The pam_authenticate 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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