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    "keimetha tois keinon rhemasi peithomenoi.";
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    "keimetha tois keinon rhemasi peithomenoi.";
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char *test_vfs1(bool quiet)
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char *test_vfs1(bool quiet)
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{
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{
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    if (mount("tmpfs", "/", "nulldev0") != EOK)
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    if (mount("tmpfs", "/", "nulldev0") != EOK)
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        return "Mount failed.\n";
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        return "mount() failed.\n";
-
 
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    if (!quiet)
-
 
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        printf("mounted tmpfs on /.\n");
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    if (mkdir("/mydir", 0) != 0)
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    if (mkdir("/mydir", 0) != 0)
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        return "mkdir() failed.\n";
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        return "mkdir() failed.\n";
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    if (!quiet)
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    if (!quiet)
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        printf("Created directory /mydir\n");
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        printf("created directory /mydir\n");
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    int fd0 = open("/mydir/myfile", O_CREAT);
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    int fd0 = open("/mydir/myfile", O_CREAT);
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    if (fd0 < 0)
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    if (fd0 < 0)
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        return "open() failed.\n";
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        return "open() failed.\n";
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    if (!quiet)
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    if (!quiet)
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        printf("Created /mydir/myfile, handle=%d\n", fd0);
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        printf("created file /mydir/myfile, fd=%d\n", fd0);
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    ssize_t cnt;
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    ssize_t cnt;
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    size_t size = sizeof(text);
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    size_t size = sizeof(text);
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    cnt = write(fd0, text, size);
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    cnt = write(fd0, text, size);
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    if (cnt < 0)
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    if (cnt < 0)
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        return "write() failed.\n";
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        return "write() failed.\n";
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    if (!quiet)
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    if (!quiet)
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        printf("Written %d btyes to handle %d.\n", cnt, fd0);
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        printf("written %d bytes, fd=%d\n", cnt, fd0);
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    if (lseek(fd0, 0, SEEK_SET) != 0)
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    if (lseek(fd0, 0, SEEK_SET) != 0)
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        return "lseek() failed.\n";
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        return "lseek() failed.\n";
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-
 
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    DIR *dirp;
-
 
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    struct dirent *dp;
-
 
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-
 
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    dirp = opendir("/");
-
 
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    if (!dirp)
-
 
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        return "opendir() failed.";
-
 
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    while ((dp = readdir(dirp)))
-
 
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        printf("Discovered %s\n", dp->d_name);
-
 
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    closedir(dirp);
-
 
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-
 
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    int fd1 = open("/dir1/file1", O_RDONLY);
-
 
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    int fd2 = open("/dir2/file2", O_RDONLY);
-
 
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-
 
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    if (fd1 < 0)
-
 
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        return "open() failed.\n";
-
 
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    if (fd2 < 0)
-
 
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        return "open() failed.\n";
-
 
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-
 
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    if (!quiet)
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    if (!quiet)
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        printf("Opened file descriptors %d and %d.\n", fd1, fd2);
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        printf("sought to position 0, fd=%d\n", fd0);
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    char buf[10];
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    char buf[10];
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    cnt = read(fd0, buf, sizeof(buf));
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    cnt = read(fd0, buf, sizeof(buf));
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    if (cnt < 0)
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    if (cnt < 0)
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        return "read() failed.\n";
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        return "read() failed.\n";
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79
 
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    if (!quiet)
80
    if (!quiet)
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        printf("Read %d bytes from handle %d: %.*s\n", cnt, fd0, cnt,
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        printf("read %d bytes: \"%.*s\", fd=%d\n", cnt, cnt, buf, fd0);
99
            buf);
-
 
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82
 
101
    cnt = read(fd1, buf, sizeof(buf));
-
 
102
    if (cnt < 0)
83
    DIR *dirp;
103
        return "read() failed.\n";
84
    struct dirent *dp;
104
 
85
 
-
 
86
    dirp = opendir("/");
105
    if (!quiet)
87
    if (!dirp)
-
 
88
        return "opendir() failed.";
-
 
89
    while ((dp = readdir(dirp)))
106
        printf("Read %d bytes from handle %d: %.*s\n", cnt, fd1, cnt,
90
        printf("discovered node %s in /\n", dp->d_name);
107
            buf);
91
    closedir(dirp);
108
 
92
 
109
    return NULL;
93
    return NULL;
110
}
94
}
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