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/*

 * Copyright (c) 2008 Jakub Jermar

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * - Redistributions of source code must retain the above copyright

 *   notice, this list of conditions and the following disclaimer.

 * - Redistributions in binary form must reproduce the above copyright

 *   notice, this list of conditions and the following disclaimer in the

 *   documentation and/or other materials provided with the distribution.

 * - The name of the author may not be used to endorse or promote products

 *   derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#include <errno.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <vfs/vfs.h>

#include <unistd.h>

#include <fcntl.h>

#include <dirent.h>

#include <sys/types.h>

#include <sys/stat.h>

#include "../tester.h"

char text[] = "O xein', angellein Lakedaimoniois hoti teide "

	"keimetha tois keinon rhemasi peithomenoi.";

char *test_vfs1(bool quiet)

{

	int rc;

	rc = mount("tmpfs", "/", "nulldev0");

	switch (rc) {

	case EOK:

		if (!quiet)

			printf("mounted tmpfs on /\n");

		break;

	case EBUSY:

		if (!quiet)

			printf("(INFO) something is already mounted on /\n");

		break;

	default:

		if (!quiet)

			printf("(INFO) IPC returned errno %d\n", rc);

		return "mount() failed.";

	}

	if (mkdir("/mydir", 0) != 0)

		return "mkdir() failed.\n";

	if (!quiet)

		printf("created directory /mydir\n");

	int fd0 = open("/mydir/myfile", O_CREAT);

	if (fd0 < 0)

		return "open() failed.\n";

	if (!quiet)

		printf("created file /mydir/myfile, fd=%d\n", fd0);

	ssize_t cnt;

	size_t size = sizeof(text);

	cnt = write(fd0, text, size);

	if (cnt < 0)

		return "write() failed.\n";

	if (!quiet)

		printf("written %d bytes, fd=%d\n", cnt, fd0);

	if (lseek(fd0, 0, SEEK_SET) != 0)

		return "lseek() failed.\n";

	if (!quiet)

		printf("sought to position 0, fd=%d\n", fd0);

	char buf[10];

	while ((cnt = read(fd0, buf, sizeof(buf)))) {

		if (cnt < 0)

			return "read() failed.\n";

		if (!quiet)

			printf("read %d bytes: \"%.*s\", fd=%d\n", cnt, cnt,

			    buf, fd0);

	}

	close(fd0);

	DIR *dirp;

	struct dirent *dp;

	if (!quiet)

		printf("scanning the root directory...\n");

	dirp = opendir("/");

	if (!dirp)

		return "opendir() failed\n";

	while ((dp = readdir(dirp)))

		printf("discovered node %s in /\n", dp->d_name);

	closedir(dirp);

	if (rename("/mydir/myfile", "/mydir/yourfile"))

		return "rename() failed.\n";

	if (!quiet)

		printf("renamed /mydir/myfile to /mydir/yourfile\n");

	if (unlink("/mydir/yourfile"))

		return "unlink() failed.\n";

	if (!quiet)

		printf("unlinked file /mydir/yourfile\n");

	if (rmdir("/mydir"))

		return "rmdir() failed.\n";

	if (!quiet)

		printf("removed directory /mydir\n");

	if (!quiet)

		printf("scanning the root directory...\n");

	dirp = opendir("/");

	if (!dirp)

		return "opendir() failed\n";

	while ((dp = readdir(dirp)))

		printf("discovered node %s in /\n", dp->d_name);

	closedir(dirp);

	return NULL;

}