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/**
* test.c: C-based test for https://lkml.org/lkml/2012/1/11/394
* Author: Tyler Hicks <tyhicks@canonical.com>
*
* Copyright (C) 2012 Canonical, Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
int main(void)
{
unsigned char buf[] = { 103, 0, 0, 0, 0, 220 };
ssize_t written;
int miscdev;
miscdev = open("/dev/ecryptfs", O_WRONLY);
if (miscdev < 0)
return 1;
written = write(miscdev, buf, 1073741824);
close(miscdev);
/* The write should fail */
return written < 0 ? 0 : 2;
}
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