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 tarball for details.
   8 */
   9
  10/* A number of standard utilities can accept multiple command line args
  11 * of '-' for stdin, according to SUSv3.  So we encapsulate the check
  12 * here to save a little space.
  13 */
  14
  15#include "libbb.h"
  16
  17int FAST_FUNC fclose_if_not_stdin(FILE *f)
  18{
  19        /* Some more paranoid applets want ferror() check too */
  20        int r = ferror(f); /* NB: does NOT set errno! */
  21        if (r) errno = EIO; /* so we'll help it */
  22        if (f != stdin)
  23                return (r | fclose(f)); /* fclose does set errno on error */
  24        return r;
  25}
  26