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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];

    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;

}