BPX1GPE (getpwent) example
The following code accesses the user database starting
with the next available entry and continuing until end of fileon the
database. It returns a structure identifying information about each
user entry in the database. For the callable service, see getpwent (BPX1GPE, BPX4GPE) — Sequentially access the user database. For the data structure, see BPXYGIDN — Map data returned for getpwnam and getpwuid. AMODE 64 callers use BPX4GPE (getpwent) example.
GPELOOP DS 0H
CALL BPX1GPE, Access the user database +
(RETVAL, Return value: 0 or ->BPXYGIDN +
RETCODE, Return code +
RSNCODE), Reason code +
VL,MF=(E,PLIST) ----------------------------------
ICM R8,B'1111',RETVAL
BZ CHKGPERR Error or end of file
USING GIDN,R8
* access the user structure
DROP R8
B GPELOOP Check next user entry
CHKGPERR DS 0H
ICM R8,B'1111',RETCODE
BZ GPEEOF End of file
* handle error as needed
GPEEOF DS 0H