1.\" Generated from openpam_nullconv.c by gendoc.pl 2.\" $OpenPAM: openpam_nullconv.c 938 2017-04-30 21:34:42Z des $ 3.Dd February 24, 2019 4.Dt OPENPAM_NULLCONV 3 5.Os 6.Sh NAME 7.Nm openpam_nullconv 8.Nd null conversation function 9.Sh SYNOPSIS 10.In sys/types.h 11.In security/pam_appl.h 12.In security/openpam.h 13.Ft "int" 14.Fn openpam_nullconv "int n" "const struct pam_message **msg" "struct pam_response **resp" "void *data" 15.Sh DESCRIPTION 16The 17.Fn openpam_nullconv 18function is a null conversation function suitable 19for applications that want to use PAM but don't support interactive 20dialog with the user. 21Such applications should set 22.Dv PAM_AUTHTOK 23to whatever authentication 24token they've obtained on their own before calling 25.Xr pam_authenticate 3 26and / or 27.Xr pam_chauthtok 3 , 28and their PAM configuration should specify the 29.Dv use_first_pass 30option for all modules that require access to the 31authentication token, to make sure they use 32.Dv PAM_AUTHTOK 33rather than 34try to query the user. 35.Pp 36.Sh RETURN VALUES 37The 38.Fn openpam_nullconv 39function returns one of the following values: 40.Bl -tag -width 18n 41.It Bq Er PAM_SUCCESS 42Success. 43.It Bq Er PAM_CONV_ERR 44Conversation failure. 45.El 46.Sh SEE ALSO 47.Xr openpam_ttyconv 3 , 48.Xr pam 3 , 49.Xr pam_authenticate 3 , 50.Xr pam_chauthtok 3 , 51.Xr pam_prompt 3 , 52.Xr pam_set_item 3 , 53.Xr pam_strerror 3 , 54.Xr pam_vprompt 3 55.Sh STANDARDS 56The 57.Fn openpam_nullconv 58function is an OpenPAM extension. 59.Sh AUTHORS 60The 61.Fn openpam_nullconv 62function and this manual page were 63developed for the 64.Fx 65Project by ThinkSec AS and Network Associates Laboratories, the 66Security Research Division of Network Associates, Inc.\& under 67DARPA/SPAWAR contract N66001-01-C-8035 68.Pq Dq CBOSS , 69as part of the DARPA CHATS research program. 70.Pp 71The OpenPAM library is maintained by 72.An Dag-Erling Sm\(/orgrav Aq Mt des@des.no . 73