Re: IFS problem with V5R4 upgrade

On 14/05/2009, at 6:04 PM, Ian Patterson wrote:

I have an RPGLE program that reads a file on the IFS which is created by a
PC program (of mine).

EVERYTHING, including database files, display files, save files, printer files, communication files, and any other object you care to name, is in the IFS! So do you mean you are reading a stream file?

This program has worked successfully for years over all OS/400 versions from
V5R1
Last week a Customer upgraded from V5R3 to V5R4 and the program now fails on
the open() of the IFS file (return code -1)

Return code from ALL Unix APIs is next to useless. It simply indicates a problem. You have to examine the errno variable to see the real cause. Does you code do that? What is the value of errno?

If you're not already handling errno than you have a more serious coding defect. Search the archives, the Sourcerer's redbook, or Scott K's examples to see how to handle errno.

Compare the errno you receive with the list of errno values in the documentation for the API that failed to resolve your problem.

All other V5R4's including ours work OK.

PTF level differences perhaps?

The strange thing is that if I interactively debug the program - it works.

On the customer's system? Then debug it in batch and see if it still works OK? If you don't know how to debug in batch then search the archives for STRSRVJOB.

Regards,
Simon Coulter.
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