On 22/08/2017 11:59 PM, Farley, Peter x23353 wrote:
In that case the assembler I/O modules handled any errors that they could
(SYNAD, etc.) and passed back error code(s) and messages to the COBOL interface
module to pass up to the caller, simulating COBOL FILE STATUS and VSAM error
variable where possible.
Metal C might be a better choice for more generalized file I/O handling, one
small step above assembler but with all assembler facilities available.
The best generalized file handling I've seen on z/OS is the C stdio
fopen() and friends (by a country mile). That one factory function can
handle all the standard access methods: BSAM, QSAM, VSAM (KSDS, RRDS,
ESDS), hiperspaces and Unix files. It's a thing of beauty. To code the
equivalent functionality in Metal/C would take hundreds if not thousands
of lines of code.
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