Function open_temp

src/sort.c:1298–1340

   kind of failure.  */

static FILE *
open_temp (struct tempnode *temp)
{
  int tempfd, pipefds[2];
  FILE *fp = NULL;

  if (temp->state == UNREAPED)
    wait_proc (temp->pid);

  tempfd = open (temp->name, O_RDONLY);
  if (tempfd < 0)
    return NULL;

  pid_t child;
  int result = pipe_child (&child, pipefds, tempfd, true,
                           MAX_TRIES_DECOMPRESS);

  if (result)
    {
      if (result != EMFILE)
        error (SORT_FAILURE, result, _("could not run compress program %s -d"),
               quoteaf (compress_program));
      close (tempfd);
      errno = EMFILE;
    }
  else
    {
      temp->pid = child;
      register_proc (temp);
      close (tempfd);
      close (pipefds[1]);

      fp = fdopen (pipefds[0], "r");
      if (! fp)
        {
          int saved_errno = errno;
          close (pipefds[0]);
          errno = saved_errno;
        }
    }

  return fp;
}

/* Append DIR to the array of temporary directory names.  */
static void