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    The following form allows you to view linux man pages.

    Command:

    pam_sm_authenticate

    
    
    

    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)
    
    
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