From: "Helight.Xu" <helight.xu@gmail.com>
To: Xiaotian Feng <xtfeng@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 如何通过fd找到打开文件的路径及名称
Date: Fri, 20 Nov 2009 17:55:07 +0800 [thread overview]
Message-ID: <4B06677B.9050101@gmail.com> (raw)
In-Reply-To: <7b6bb4a50911200012s67b28e58g8109b71479ef4257@mail.gmail.com>
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@gmail.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
>> the body of a message to majordomo@vger.kernel.org
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>>
>>
>
>
--
---------------------------------
Zhenwen Xu - Open and Free
Home Page: http://zhwen.org
next prev parent reply other threads:[~2009-11-20 9:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-20 6:33 如何通过fd找到打开文件的路径及名称 Helight.Xu
2009-11-20 8:12 ` 如何通过fd找到打开文件的路径及名称 Xiaotian Feng
2009-11-20 9:55 ` Helight.Xu [this message]
2009-11-22 16:37 ` 如何通过fd找到打开文件的路径及名称 Américo Wang
2009-11-23 1:02 ` 如何通过fd找到打开文件的路径及名称 Helight.Xu
2009-11-23 14:41 ` 如何通过fd找到打开文件的路径及名称 Américo Wang
[not found] ` <alpine.LRH.2.00.0911231605340.3659@twin.jikos.cz>
2009-11-23 15:31 ` 如何通过fd找到打开文件的路径及名称 Américo Wang
2009-11-24 12:03 ` non-english on list (was Re: ????????????fd????????????????????????????????????) Pavel Machek
2009-11-24 14:10 ` David Newall
2009-11-24 14:58 ` non-english on list Américo Wang
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