| PAM_AUTHENTICATE(3) | Library Functions Manual | PAM_AUTHENTICATE(3) | 
pam_authenticate —
#include <sys/types.h>
#include <security/pam_appl.h>
int
  
  pam_authenticate(pam_handle_t
    *pamh, int
  flags);
pam_authenticate() function attempts to authenticate
  the user associated 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 values:
PAM_SILENTPAM_DISALLOW_NULL_AUTHTOKIf any other bits are set,
    pam_authenticate() will return
    PAM_BAD_CONSTANT.
pam_authenticate() function returns one of the
  following values:
PAM_SUCCESS]PAM_ABORT]PAM_AUTHINFO_UNAVAIL]PAM_AUTH_ERR]PAM_BAD_CONSTANT]PAM_BUF_ERR]PAM_CONV_ERR]PAM_CRED_INSUFFICIENT]PAM_MAXTRIES]PAM_PERM_DENIED]PAM_SERVICE_ERR]PAM_SYSTEM_ERR]PAM_USER_UNKNOWN]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>.
| April 30, 2017 | NetBSD 9.4 |