The code below is from the copybook MFUSRPRM.CPY. It describes the parameter block that is passed to the user module. The copybook is located in the %ProgramFiles(x86)%\Micro Focus\Enterprise Developer\cpylib directory. See the comments in the code for descriptions of each field:
*===============================================================
* Copyright (C) 2007-2015 Micro Focus Limited.
* All rights reserved.
*===============================================================
*****************************************************************
* Data items related to the module specified by MFFTP_USR_PGM *
* *
* (tag)-usr-ftp-function-init *
* Function to be performed set as follows: *
* if (tag)-usr-ftp-function-init *
* used to cause the module to be loaded to ensure it exists*
* if (tag)-usr-ftp-function-call *
* normal call *
* (tag)-usr-ftp-return-code *
* Indicate result of the call *
* set (tag)-usr-ftp-ok true on an INIT call or if a *
* normal call was deemed successful. The calling routine *
* will scan the output to determine if the call to the *
* FTP client was successful *
* set (tag)-usr-ftp-fail true if this module determines *
* that there was a problem and that the calling module *
* should not check the output *
* (tag)-usr-ftp-ip-file-data. *
* Contains the length and fully qualified name of the file *
* holding the normalised FTP control statements. This may be *
* used directly or read to created an edited version as input *
* to the FTP client *
* (tag)-usr-ftp-ip-name-len *
* actual length of the data in (tag)-usr-ftp-ip-name *
* (tag)-usr-ftp-ip-name *
* actual file name of the file holding the normalised FTP *
* control statements *
* (tag)-usr-ftp-op-file-data. *
* Contains the length and fully qualified name of the file *
* to hold the output from the FTP client that will be checked *
* (if appropriate) and printed by the calling routine. This *
* may be the actual output from the FTP client or this *
* routine may write an edited version here, for example to *
* remove sensitive information. *
* (tag)-usr-ftp-op-name-len *
* actual length of the data in (tag)-usr-ftp-op-name *
* (tag)-usr-ftp-op-name *
* actual file name of the file to hold the output from the *
* FTP client (actual or edited) *
* (tag)-usr-ftp-tmp-file-data. *
* Contains the length and the name of a directory that may be *
* used as a work are to hold temporary files. *
* (tag)-usr-ftp-tmp-name-len *
* actual length of the data in (tag)-usr-ftp-tmp-nam *
* (tag)-usr-ftp-tmp-name *
* The name of a directory that may be used to create *
* temporary files, for example an edited input file or the *
* output from the FTP client before it is edited *
*****************************************************************
* *
01 (tag)-mfftp-usr-ftp-parm.
05 (tag)-usr-ftp-function pic x(1).
88 (tag)-usr-ftp-function-init value '0'.
88 (tag)-usr-ftp-function-call value '1'.
05 (tag)-usr-ftp-return-code pic x(1).
88 (tag)-usr-ftp-ok value '0'.
88 (tag)-usr-ftp-fail value '1'.
05 (tag)-usr-ftp-msg1 pic x(64).
05 (tag)-usr-ftp-msg2 pic x(64).
05 (tag)-usr-ftp-pass-ip-data.
10 (tag)-usr-ftp-pass-ip-fname-len pic 9(3).
10 (tag)-usr-ftp-pass-ip-fname pic x(512).
05 (tag)-usr-ftp-pass-op-data.
10 (tag)-usr-ftp-pass-op-fname-len pic 9(3).
10 (tag)-usr-ftp-pass-op-fname pic x(512).
05 (tag)-usr-ftp-user-ip-data.
10 (tag)-usr-ftp-user-ip-fname-len pic 9(3).
10 (tag)-usr-ftp-user-ip-fname pic x(512).
05 (tag)-usr-ftp-user-op-data.
10 (tag)-usr-ftp-user-op-fname-len pic 9(3).
10 (tag)-usr-ftp-user-op-fname pic x(512).
05 (tag)-usr-ftp-temp-data.
10 (tag)-usr-ftp-temp-fname-len pic 9(3).
10 (tag)-usr-ftp-temp-fname pic x(512).