LXR linux/tools/gpio/gpio-utils.h

   1/*
   2 * GPIO tools - utility helpers library for the GPIO tools
   3 *
   4 * Copyright (C) 2015 Linus Walleij
   5 *
   6 * Portions copied from iio_utils and lssio:
   7 * Copyright (c) 2010 Manuel Stahl <manuel.stahl@iis.fraunhofer.de>
   8 * Copyright (c) 2008 Jonathan Cameron
   9 * *
  10 * This program is free software; you can redistribute it and/or modify it
  11 * under the terms of the GNU General Public License version 2 as published by
  12 * the Free Software Foundation.
  13 */
  14#ifndef _GPIO_UTILS_H_
  15#define _GPIO_UTILS_H_
  16
  17#include <string.h>
  18
  19#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
  20
  21static inline int check_prefix(const char *str, const char *prefix)
  22{
  23        return strlen(str) > strlen(prefix) &&
  24                strncmp(str, prefix, strlen(prefix)) == 0;
  25}
  26
  27#endif /* _GPIO_UTILS_H_ */
  28