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v A 4-byte address returned for SET (if the request is READ, READNEXT, or
READPREV, and if FC_EIDOPT5 indicates that this is SET).
v Data returned for INTO (if the request is READ, READNEXT, or READPREV,
and if FC_EIDOPT5 indicates that this is not SET).
v Data from FROM (if the request is WRITE or REWRITE).
FC_ADDR3
is the address of one of the following:
v The halfword value of LENGTH (if the request is READ, WRITE, REWRITE,
READNEXT, or READPREV).
Warning: For requests that specify INTO, do not change the value of
LENGTH to a value greater than that specified by the application. To do so
causes a storage overlay in the application.
v The returned halfword value of NUMREC (if the request is DELETE).
v The halfword value of REQID (if the request is STARTBR, RESETBR, or
ENDBR).
FC_ADDR4
is the address of an area containing the value of the RIDFLD keyword.
FC_ADDR5
is the address of the halfword value of KEYLENGTH.
FC_ADDR6
is the address of the halfword value of REQID (if the request is READNEXT or
READPREV).
FC_ADDR7
is the address of an area containing the value of SYSID.
FC_ADDR8
is the address of a value intended for CICS internal use only. It must not be
used.
FC_ADDR9
is the address of a value intended for CICS internal use only. It must not be
used.
FC_ADDRA
is the address of a value intended for CICS internal use only. It must not be
used.
FC_ADDRB
is the address of the fullword value of TOKEN (if the request is READ,
READNEXT, READPREV, REWRITE, DELETE, or UNLOCK).
Modifying fields in the command-level parameter structure
Some fields that are passed to file control are used as input to the request, some
are used as output fields, and some are used for both input and output. The
method your user exit program uses to modify a field depends on the usage of the
field.
A list of input and output fields
The following are always input fields:
FILE
FROM
file control EXEC interface API exits
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CICS TS for OS/390: CICS Customization Guide