LXR busybox/libbb/fclose

   1/* vi: set sw=4 ts=4: */
   2/*
   3 * fclose_nonstdin implementation for busybox
   4 *
   5 * Copyright (C) 2003  Manuel Novoa III  <mjn3@codepoet.org>
   6 *
   7 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
   8 */
   9#include "libbb.h"
  10
  11/* A number of standard utilities can accept multiple command line args
  12 * of '-' for stdin, according to SUSv3.  So we encapsulate the check
  13 * here to save a little space.
  14 */
  15int FAST_FUNC fclose_if_not_stdin(FILE *f)
  16{
  17        /* Some more paranoid applets want ferror() check too */
  18        int r = ferror(f); /* NB: does NOT set errno! */
  19        if (r)
  20                errno = EIO; /* so we'll help it */
  21        if (f != stdin)
  22                return (r | fclose(f)); /* fclose does set errno on error */
  23        return r;
  24}
  25