Eben King wrote:
> On Sat, 29 Oct 2005, Sick Twist wrote:
>
>
>>> From: "Ian C. Blenke" <ian@blenke.com>
>>> Reply-To: slug@nks.net
>>> To: slug@nks.net
>>> Subject: Re: [SLUG] confused about file permissions
>>> Date: Sat, 29 Oct 2005 19:55:07 -0400
>>>
>>> <snipation>
>>> Confused yet? ;)
>>>
>>> - Ian C. Blenke <ian@blenke.com> http://ian.blenke.com/
>>>
>> Just to clarify: In order to delete empty directory "foo", I only need write
>> access to foo's parent directory--correct?
>>
>
> No, you need execute permission as well:
>
> [eben@pc tmp]$ ls -l 1
> total 4.0K
> 4.0K d--------- 2 root root 4.0K Oct 29 20:37 foo/
> [eben@pc tmp]$ chmod 200 1
> [eben@pc tmp]$ ls -ld 1
> 4.0K d-w------- 3 eben eben 4.0K Oct 29 20:37 1/
> [eben@pc tmp]$ rmdir 1/foo
> rmdir: `1/foo': Permission denied
> [eben@pc tmp]$ chmod 100 1
> [eben@pc tmp]$ ls -ld 1
> 4.0K d--x------ 3 eben eben 4.0K Oct 29 20:45 1/
> [eben@pc tmp]$ rmdir 1/foo
> rmdir: `1/foo': Permission denied
> [eben@pc tmp]$ chmod 300 1
> [eben@pc tmp]$ ls -ld 1
> 4.0K d-wx------ 3 eben eben 4.0K Oct 29 20:37 1/
> [eben@pc tmp]$ rmdir 1/foo
> [eben@pc tmp]$
>
> Haven't got a handle on _why_ yet...
>
>
Google for an answer for this, and you find Wayne Pollock's page on Unix
permissions as the third hit for "unix directory permissions" (hi wayne!)
http://www.hccfl.edu/pollock/AUnix1/FilePermissions.htm
"Besides controlling a user's ability to |cd| into some directory, the
execute permission is required on a directory to use the |stat()| system
call on files within that directory. The |stat()| system called is used
to access the information in a file's |inode|, and must be done before
you can open or delete (via the |unlink()| system call) that file. "
That's kind of what it "felt" like while testing your example. If you
learned your Unix programming back in the day, this was different on
varying Unix flavors.
- Ian C. Blenke <ian@blenke.com> http://ian.blenke.com
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