LXR busybox/libbb/isdirectory.c

   1/* vi: set sw=4 ts=4: */
   2/*
   3 * Utility routines.
   4 *
   5 * Based in part on code from sash, Copyright (c) 1999 by David I. Bell
   6 * Permission has been granted to redistribute this code under the GPL.
   7 *
   8 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
   9 */
  10
  11#include <sys/stat.h>
  12#include "libbb.h"
  13
  14/*
  15 * Return TRUE if fileName is a directory.
  16 * Nonexistent files return FALSE.
  17 */
  18int FAST_FUNC is_directory(const char *fileName, const int followLinks, struct stat *statBuf)
  19{
  20        int status;
  21        struct stat astatBuf;
  22
  23        if (statBuf == NULL) {
  24                /* use auto stack buffer */
  25                statBuf = &astatBuf;
  26        }
  27
  28        if (followLinks)
  29                status = stat(fileName, statBuf);
  30        else
  31                status = lstat(fileName, statBuf);
  32
  33        status = (status == 0 && S_ISDIR(statBuf->st_mode));
  34
  35        return status;
  36}
  37