linux-kernel - Re: extra slash in current path

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Date:	Thu, 23 Jun 2011 16:25:06 +0200
From:	richard -rw- weinberger <richard.weinberger@...il.com>
To:	yuyichao-mit <yuyichao@....edu>
Cc:	Lars Täuber <taeuber@...w.de>,
	linux-kernel@...r.kernel.org, linux-c-programming@...r.kernel.org
Subject: Re: extra slash in current path

On Thu, Jun 23, 2011 at 4:11 PM, yuyichao-mit <yuyichao@....edu> wrote:
> On Thu, Jun 23, 2011 at 9:54 AM, richard -rw- weinberger
> <richard.weinberger@...il.com> wrote:
>> On Thu, Jun 23, 2011 at 3:32 PM, yuyichao-mit <yuyichao@....edu> wrote:
>>> On Thu, Jun 23, 2011 at 9:31 AM, Lars Täuber <taeuber@...w.de> wrote:
>>>> Hi,
>>>>
>>>> Am Thu, 23 Jun 2011 09:14:18 -0400
>>>> yuyichao-mit <yuyichao@....edu> schrieb:
>>>>> The problem is like this:
>>>>>
>>>>> $ cd /
>>>>> $ pwd
>>>>> /
>>>>>
>>>>> $ cd /
>>>>> $ pwd
>>>>> //
>>>>
>>>> didn't you mean?:
>>>> $ cd //
>>>> $ pwd
>>>> //
>>>
>>> yes, exactly.
>>>
>>> Sorry for the typo (copy-paste~~~)
>>>
>>
>> Is this really a kernel issue?
>> rw@...coon:~> cd //
>> rw@...coon://> pwd
>> //
>> rw@...coon://> ls -l /proc/self/cwd
>> lrwxrwxrwx 1 rw users 0 23. Jun 15:53 /proc/self/cwd -> /
>
> well, that's true, but this is indeed the retrun value of get_current_dir_name.
>
> #include <unistd.h>
> #include <stdio.h>
>
> int main()
> {
>        char *cwd = get_current_dir_name();
>        printf("%s\n", cwd);
>        return 0;
> }
>
> $ cd //
> $ pwd
> //
> $ main
> //
>
> so is this a glibc stuff??

I guess glibc does some caching.

> (that's y I also send to linux-c-programming.)

Ah, ok.

-- 
Thanks,
//richard
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