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  1.  Home
  2. C400-L
  3. March 2005

fread not working

I wrote (well copied from someone else) a little C program that does this:

int
main (int argc, char *argv[])
{
  FILE *infile;
  char buffer[LEN_BUF + 1];
  int len = LEN_BUF;

  infile = fopen ("/home/james/test.ps", "rb");
  len = fread (buffer, sizeof (char), LEN_BUF, infile);
  fclose (infile);
  return 0;
}

When I compile it with *IFSIO everything works just fine. But I need to make this part of an RPG program. So I change int main(int argc, char *argv[]) to int copy_ps_to_sf(FILE *infile), remove the FILE *infile declaration from the body of the function, and used CRTCMOD with *IFSIO. My RPG program opens the file and passes the file pointer as 10I 0. But now when this function runs I get:

read(): Operation not supported.

from perror.  How can I read a file in C that I opened in RPG?

James Rich

It's not the software that's free; it's you.
        - billyskank on Groklaw

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