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 17:55:07 +0800
From:	"Helight.Xu" <helight.xu@...il.com>
To:	Xiaotian Feng <xtfeng@...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

Xiaotian Feng wrote:
> 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.
>   
struct file is easy to get : current->files->fd_array[fd]

but I didn't find the file name!
> 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
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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>>     
>
>   


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

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