Re: Qp0lGetPathFromFileID how to check errors in AS400

[Vernon Hamberg <vhamberg@xxxxxxxxxxxxxxx>]

Hi Steff

After the documentation about returning NULL is a list of error 
conditions. These are values of errno, which is mentioned there. You 
have a couple choices. First, you need to retrieve errno. There is a 
thread in this list with some help for you -

http://permalink.gmane.org/gmane.comp.lang.as400.rpg/77392

That link points to the post in the RPG list.

HTH
Vern

On 4/7/2013 7:09 AM, steff Sucala wrote:
> Hi
>
> I'm reading a line from an IBM created journal and I want to display the name of the file that was accessed.
> I'm using this API, and getting the results I want when everything is ok.
>
> D GetPathFID      PR              *   ExtProc('Qp0lGetPathFromFileID')
> D buf                             *   Value
> D size                          10U 0 Value
> D fileid                        16A
>                                 
> D rc              s               *
>
> c                   clear                   buffer          512
>
> c                   eval      rc = GetPathFID(%ADDR(Buffer)
> c                                  : %SIZE(Buffer)
> c                                  : obj_fid  )
>
>          
> Sometimes I get no result with this API, and the Buffer is empty, and rc gets SPP:*NULL.
> After doing some reading on the IBM site, I understand that this means there is an error, but how do I retrieve the error?
>
> Thank you
> Steff