linux-kernel - Re: 如何通过fd找到打开文件的路径及名称

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Date:	Fri, 20 Nov 2009 16:12:14 +0800
From:	Xiaotian Feng <xtfeng@...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

in fs/open.c
   sys_open
             | --> do_sys_open
                          |--->  fd_install

Then fd is installed into file_fdtable

in fs/file_table.c
     fget_light/fget
            |----> fcheck_files

Then kernel get files from fd.

2009/11/20 Helight.Xu <helight.xu@...il.com>:
> 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？
>
> --
> ---------------------------------
> Zhenwen Xu - Open and Free
> Home Page:      http://zhwen.org
>
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