PAM_AUTHENTICATE(3)     NetBSD Library Functions Manual    PAM_AUTHENTICATE(3)


NAME
pam_authenticate -- perform authentication within the PAM framework
SYNOPSIS
#include <sys/types.h> #include <security/pam_appl.h> int pam_authenticate(pam_handle_t *pamh, int flags);
DESCRIPTION
The pam_authenticate() function attempts to authenticate the user associ- ated with the pam context specified by the pamh argument. The application is free to call pam_authenticate() as many times as it wishes, but some modules 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 val- ues: PAM_SILENT Do not emit any messages. PAM_DISALLOW_NULL_AUTHTOK Fail if the user's authentication token is null. If any other bits are set, pam_authenticate() will return PAM_BAD_CONSTANT.
RETURN VALUES
The pam_authenticate() function returns one of the following values: [PAM_SUCCESS] Success. [PAM_ABORT] General failure. [PAM_AUTHINFO_UNAVAIL] Authentication information is unavailable. [PAM_AUTH_ERR] Authentication error. [PAM_BAD_CONSTANT] Bad constant. [PAM_BUF_ERR] Memory buffer error. [PAM_CONV_ERR] Conversation failure. [PAM_CRED_INSUFFICIENT] Insufficient credentials. [PAM_MAXTRIES] Maximum number of tries exceeded. [PAM_PERM_DENIED] Permission denied. [PAM_SERVICE_ERR] Error in service module. [PAM_SYSTEM_ERR] System error. [PAM_USER_UNKNOWN] Unknown user.
SEE ALSO
pam(3), pam_strerror(3)
STANDARDS
X/Open Single Sign-On Service (XSSO) - Pluggable Authentication Modules, June 1997.
AUTHORS
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. The OpenPAM library is maintained by Dag-Erling Smørgrav <des@des.no>. NetBSD 9.0 February 24, 2019 NetBSD 9.0

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