linux-kernel - Re: 如何通过fd找到打开文件的路径及名称

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Message-ID: <4B09DF29.8020003@gmail.com>
Date:	Mon, 23 Nov 2009 09:02:33 +0800
From:	"Helight.Xu" <helight.xu@...il.com>
To:	Américo Wang <xiyou.wangcong@...il.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: 如何通过fd找到打开文件的路径及名称

Américo Wang wrote:
> On Fri, Nov 20, 2009 at 02:33:48PM +0800, Helight.Xu wrote:
>   
>> 在用户程序中打开文件进行编辑，那在内核中如何能通过open后的fd
>> 来找到相应打开文件的路径及其名字呢？
>>
>>     
>
> 问题是你为什么要在内核中做呢？在用户空间完全可以完成：
>
>  % readlink /proc/<PID>/fd/X
>   
我是想在内核中实现一些功能，所以现在内核中找到文件的路径及其名称，现在只 
能找到文件名，还在找路径。。。
>
>   


-- 
---------------------------------
Zhenwen Xu - Open and Free
Home Page:	http://zhwen.org

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