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I am trying to create a program to write directly to the IFS. I am using access() to determine the existence of a file in the IFS. But all I get are 'No such path or directory.' and when I try to use pathconf() I get the same.
Are you forgetting to trim trailing blanks off of the filename before calling access()? That's what it sounds like. Unless the files actually do have spaces as part of their names (which _is_ legal in the IFS) you'll want to make sure that you don't have the spaces in teh filename either.
That's the most common reason that someone has this problem. They forget that RPG's character fields are fixed-length (unless defined with VARYING) and that those blanks are added to the end automatically.
The other possibility is that your prototype for access() is wrong. Here's an example of using access():
midrange.com
D F_OK C 0
D R_OK C 4
D W_OK C 2
D X_OK C 1
D access PR 10I 0 ExtProc('access')
D Path * Value Options(*string)
D amode 10I 0 Value
D test s 500A
/free
test = '/tmp/scotttest.txt';
if access(%trimr(test): F_OK) = 0;
// file exists.
endif;
Make sure the %TRIMR is on the _same statement_ as the access() API,
otherwise the blanks will simply be added back on. If you need to remove
them ahead of time, you have to use a VARYING field (or a constant)
In order to access the directory and the file I have to use WRKLNK rather than WRKFLR. What is the difference between the two? And what routines do I use other than access() and pathconf()?
WRKLNK access the IFS. WRKFLR accesses the old "document library system" (QDLS) rather than the whole IFS.
Pathconf() should work fine as long as the prototype is correct and you're trimming the blanks. Just out of curiosity, what are you going to use it for? I've yet to find a compelling reason to use it.
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