ntfs

I accessed the $MFT file and extracted file attributes. Given the file attributes from MFT, how to get a LBA of file from the MFT record on NTFS file system? To calculate LBA, I know that cluster number of file. It that possible using cluster number to calculate? I'm not entirely sure of your question-- But if you're simply trying to find the logical location on disk of a file, there are various IOCTLs that will achieve this. For instance, MFT File records: FSCTL_GET_NTFS_FILE_RECORD http://msdn.microsoft.com/en-us/library/windows/desktop/aa364568(v=vs.85).aspx Location on disk of a specific

什么是文件上传漏洞？ 文件上传漏洞是指由于程序员在对用户文件上传部分的控制不足或者处理缺陷，而导致的用户可以越过其本身权限向服务器上上传可执行的动态脚本文件。这里上传的文件可以是木马，病毒，恶意脚本或者WebShell等。这种攻击方式是最为直接和有效的，“文件上传”本身没有问题，有问题的是文件上传后，服务器怎么处理、解释文件。如果服务器的处理逻辑做的不够安全，则会导致严重的后果。 造成文件上传漏洞的原因 对于上传文件的后缀名（扩展名）没有做较为严格的限制 对于上传文件的MIMETYPE(用于描述文件的类型的一种表述方法) 没有做检查 权限上没有对于上传的文件目录设置不可执行权限，（尤其是对于shebang类型的文件） 对于web server对于上传文件或者指定目录的行为没有做限制 文件上传校验姿势 1. 客户端js校验 （也称前端验证，一般只校验后缀名） 一般都是在网页上写一段javascript脚本，校验上传文件的后缀名，有白名单形式也有黑名单形式。 判断方式：在浏览加载文件，但还未点击上传按钮时便弹出对话框，内容如：只允许上传.jpg/.jpeg/.png后缀名的文件，而此时并没有发送数据包。前端验证非常不可靠，通过修改数据包后缀名即可绕过，甚至关闭js都可以尝试绕过。 2. 服务端校验: (1).文件头content-type字段校验（image/gif） (2)

2016双十一马上开始了，这样的时间里当然少不了各种各样的优惠活动啦，NTFS for Mac中文官网也为大家带来了特惠惊喜。11月7日至11月13日， NTFS for Mac中文官网 推出双十一99特惠价 ，大家可以在这一周的时间里随时随地享受优惠获得这款产品。 　　与其说这是一次双十一的特惠活动，小编认为它更像是对用户的回馈，感谢大家一直以来的支持，所以这次的活动才有这么大的优惠。好了，话不多说我们来看一下具体有哪些优惠吧！ 　　图1：双11抢购 　　 活动内容如下： 　　 特惠时间： 11月7日——11月13日（一周） 　　 特惠产品： NTFS for Mac 　　 特惠价： 99元 　　 组合特惠价： NTFS for Mac与CleanMyMac组合享2.5折优惠（注：CleanMyMac是一款Mac清理工具，迅速释放Mac磁盘空间。） 　　 特惠链接 ： http://www.ntfsformac.cn/goumai.html 　　图2：NTFS for Mac安装向导 　　 NTFS for Mac 这款软件现在是Mac电脑的必备产品之一，不少用户会在自己的Mac电脑上安装这款软件。由于Mac系统无法直接写入NTFS分区，所以我们需要通过第三方软件支持它的使用，这也是这款软件推出的目的。 　　Mac电脑中安装NTFS for Mac后

ntfs-3g是一个用于读写NTFS分区的用户态文件系统（FUSE）。 优点是支持NTFS的完美读写，安装／配置简单，而且已经进入Fedora Extras。 缺点是因为是用户态文件系统，所以大量IO有明显的CPU资源占用。 步骤： 1、安装fuse， http://fuse.sourceforge.net/ ，不要安装最新版本，最新版中fuse被编入了系统内核中，不再作为模块加载，这样会使的ntfs-3g无法使用。本人下载的是fuse-2.7.3.tar.gz，解压后编译安装：./configure make make install 2、安装ntfs-3g， http://www.ntfs-3g.org/ ，本人下载的是ntfs-3g-2009.4.4.tgz，同上面的方法解压后编译安装。 3、到这一步ntfs-3g已经安装完成了，可以通过如下命令加载ntfs分区：mount -t ntfs-3g /dev/sda1 /mnt/disk 尝试挂载本地ntfs,在/etc/fstab中加入类似： /dev/hda1 /mnt/winc ntfs-3g defaults 0 0 4、让系统自动加载ntfs移动硬盘分区：按照上面的方法完成ntfs-3g的安装之后，系统并不会自动加载移动硬盘的ntfs分区，原因是系统将分区格式识别为ntfs，而不是这里的ntfs-3g

Update : This question has evolved into a question about the NTFS filesystem filter driver how to use the Win32 API in backup applications and other programs that need to know what a file really is on disk ? Junctions and reparse points are key concepts that I needed to consider and are the most confusing thing in the NTFS filesystem. The original question follows: What is the Win32 API used to detect if a directory is a junction? 'Where' (for lack of better understanding) in the NTFS hierarchy are junctions stored? If I create a junction c:\thejunction_mydir do both directories become

[Using C# and Windows as platform] I have a camera that writes JPG files to a local folder in my PC. I want to load each file the camera drops, so I have a FileSystemWatcher that notifies me whenever a new picture is created, but the camera locks the file while it's being written , so if I try to load it just after being notified of its creation, I get an exception saying that the file is locked . Currently, I have a while loop (with a Thread.Sleep) that retries to load the image every 0.2 seconds, but it feels a bit dirty. Is there a more elegant way to wait until the lock has been released,

I am trying to get the target of a junction in my program, but the only way I managed do it is: Requesting Backup privileges p-invoke CreateFile with special parameters to get a handle to the file/dir. DeviceIoControl call to the get the target. The 1st step will not work with normal user accounts, because they have no Backup privileges, and I don't want to get the UAC User Consent window every time I do this. I think this is doable somehow, because a normal "dir /A:L" command resolves the target of the links. flq I think that this answer in stackoverflow would help you? How do I

Context We have a homegrown filesystem-backed caching library. We currently have performance problems with one installation due to large number of entries (e.g. up to 100,000). The problem: we store all fs entries in one "cache directory". Very large directories perform poorly. We're looking at spreading those entries over subdirectories--as git does, e.g. 100 subdirectories with ~ 1,000 entries each. The question I understand that smaller directories sizes will help with filesystem access. But will "spreading into subdirectories" speed up traversing all entries, e.g. enumerating/reading all

I would like to compare two strings containing file paths in c#. However, since in ntfs the default is to use case insensitive paths, I would like the string comparison to be case insensitive in the same way. However I can't seem to find any information on how ntfs actually implements its case insensitivity. What I would like to know is how to perform a case insensitive comparison of strings using the same casing rules that ntfs uses for file paths. From MSDN : The string behavior of the file system, registry keys and values, and environment variables is best represented by StringComparison