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: <20091122163700.GC3476@hack>
Date:	Mon, 23 Nov 2009 00:37:00 +0800
From:	Américo Wang <xiyou.wangcong@...il.com>
To:	"Helight.Xu" <helight.xu@...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

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


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