Hello.

Years ago I used to run some system-dependent procedures via a CGI interface, simply running them inside a system call. But with more recent systems it doesn't work the same way: now there are user concerning problems (I think it depends on Apache updates occurred in the last years). The same identical procedures that I used to run on older system doesn't work properly on newer. Do you have any idea?

IE:

#include <stdio.h>
#include <stdlib.h>
main (void) {
FILE *fp;
char st [16];
  printf ("Content-type: text/html\n\n");
  system ("echo \"Hello\" > /tmp/appo/cgiOutputFile");
  fp = fopen ("/tmp/appo/cgiOutputFile", "r");
  if (fp) {
    fscanf (fp, "%s", st);
    fclose (fp);
    printf ("%s", st);
  }
  else
    printf ("Error");
}

The problem is about the user that is used to run such a call. If I wanted a particular user to be used as, I simply had to "chmod u+s" the CGI script, and it was run just like it was run from the user that owned the script.
But now it doesn't work anymore: any file directly created from behind the CGI script, after having chmoded +s the script, it is owned by the same user as that of the CGI script (as in the past ), but any file indirectly created from the outside system called command, they are owned by nobody:users on a system or apache:apache on another system (this last is a Fedora Core 1), and not as "user" .

Have I to reconfigure/recompile apache? Or do you have any other idea?

Please, help.

Regards
-- Umberto