Linux内核dentry和inode [英] Linux Kernel dentry and inode

问题描述

是否可以从给定的dentry和inode构造绝对路径?

Is it possible to construct absolute path from the given dentry and inode?

谢谢

推荐答案

是的，只需一个dentry就足够了，可以遍历dentry-> parent. 遇到挂载点时请多加注意，因为linux支持一个dentry挂载多个设备" ...好吧，编写代码很容易，只需切换到vfsmnt-> mnt_parent即可.

yes, just one dentry is enough, back traversing through dentry->parent. take care when you meet a mountpoint, for linux support "one dentry mounts multiple devices" ... well, it's easy to code,just switch to vfsmnt->mnt_parent .

顺便说一句:我经常感到困惑，为什么linux用一个字段"mnt_parent"而不是"mnt_child"来构建mountpoint-linklist，在写这个答案时，我似乎猜出了什么.

BTW: i was often confused why linux builds the mountpoint-linklist with a field "mnt_parent" rather than "mnt_child", when writing this answer, i seemed to guess out somthing.

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