Re: Having problems accessing IFS from RPGIV

["Scott Klement" <infosys@xxxxxxxxxxxx>]

Hi Mark,

Would it be possible to see more of the code?  Specifically, I'd like
to see your prototype for the open() function, the code that populates
the "FilePath" variable, the code that populates the "oflag"
variable, and any code that is checking "FileHandle" to see if the
call to open() is successful.

Another question that I have is, you say that the open() function
is failing.  How do you know that its failing?  All you do in the
code below is display errno...  is it possible that its succeeding?
I guess I'd find it helpful to see the actual point that shows a
failure...

I don't see anything wrong with the way you're prototyping/using
errno (assuming that you're also binding to QC2LE) and this appears
to be about all you were trying to demonstrate with your example code.



MSievers@promega.com wrote:
>
> I am having 2 problems access the IFS system from an RPGIV program.
>  Any  help would be greatly appreciated.  We are running v4r2.
>
> 1)  I am having a weird problem with my open() function.  It will
>  work fine the day I compile the program but the next day it will
>  fail.  If I recompile the program without making any source change
>  it will again for that day.
>
> On both days I am trying to open the same text file.  The text file
>  has not be altered in any way.   The open is for ready only.
>
> 2) I am trying to retrieve the value of errno when a function fails
>  without success.  Here is a snipped of my code.   The variable
>  errno always contains 0 even when the FileHandle is -1.
>
> D errnoF          PR              *   EXTPROC('__errno')
>
> D errnoP          S               *
> D errno           S             10I 0 BASED(errnoP)
>
> C                   Eval      FileHandle=open(%addr(FilePath):oflag)
> C                   EVAL      errnoP = errnoF
> C     'errno'       DSPLY                   errno
>
>
> Thanks for you help
>
>
> Mark
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