pam_sm_authenticate man page on Manjaro

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PAM_SM_AUTHENTICATE(3)	       Linux-PAM Manual		PAM_SM_AUTHENTICATE(3)

NAME
       pam_sm_authenticate - PAM service function for user authentication

SYNOPSIS
       #define PAM_SM_AUTH

       #include <security/pam_modules.h>

       PAM_EXTERN int pam_sm_authenticate(pam_handle_t *pamh, int flags,
					  int argc, const char **argv);

DESCRIPTION
       The pam_sm_authenticate function is the service module's implementation
       of the pam_authenticate(3) interface.

       This function performs the task of authenticating the user.

       Valid flags, which may be logically OR'd with PAM_SILENT, are:

       PAM_SILENT
	   Do not emit any messages.

       PAM_DISALLOW_NULL_AUTHTOK
	   Return PAM_AUTH_ERR if the database of authentication tokens for
	   this authentication mechanism has a NULL entry for the user.
	   Without this flag, such a NULL token will lead to a success without
	   the user being prompted.

RETURN VALUES
       PAM_AUTH_ERR
	   Authentication failure.

       PAM_CRED_INSUFFICIENT
	   For some reason the application does not have sufficient
	   credentials to authenticate the user.

       PAM_AUTHINFO_UNAVAIL
	   The modules were not able to access the authentication information.
	   This might be due to a network or hardware failure etc.

       PAM_SUCCESS
	   The authentication token was successfully updated.

       PAM_USER_UNKNOWN
	   The supplied username is not known to the authentication service.

       PAM_MAXTRIES
	   One or more of the authentication modules has reached its limit of
	   tries authenticating the user. Do not try again.

SEE ALSO
       pam(3), pam_authenticate(3), pam_sm_setcred(3), pam_strerror(3), PAM(8)

Linux-PAM Manual		  09/19/2013		PAM_SM_AUTHENTICATE(3)
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