blob: 712317d83afb1459936490262154dde68cbfd8ee [file] [log] [blame]
/*
* Copyright 2015 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
int main(void) {
char buf[128];
int fd, ret;
unsigned int i;
fd = open("/dev/zero", O_RDONLY);
if (fd < 0)
return 1;
ret = read(fd, buf, sizeof(buf));
if (ret < 0)
return 2;
for (i = 0; i < (sizeof(buf) / sizeof(buf[0])); i++) {
if (buf[i] != 0)
return 3;
}
ret = close(fd);
if (ret < 0)
return 4;
return 0;
}