lkml.org 
[lkml]   [2001]   [Mar]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Disturbing news..
In message <Pine.GSO.3.96.1010328144551.7198A-100000@laertes>, Walter
Hofmann <snwahofm@mi.uni-erlangen.de> writes
>
>
>On Wed, 28 Mar 2001, Jesse Pollard wrote:
>
>> >Any idea?
>>
>> Sure - very simple. If the execute bit is set on a file, don't allow
>> ANY write to the file. This does modify the permission bits slightly
>> but I don't think it is an unreasonable thing to have.
>
>And how exactly does this help?
>
>fchmod (fd, 0666);
>fwrite (fd, ...);
>fchmod (fd, 0777);
>

I think their point was that a program could only change permissions
of a file that was owned by the same owner. If a file is owned by a
different user & has no write permissions for any user, the program
can't modify the file or it's permissions.

Sounds like a good plan to me.


--
Simon Williams
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:18    [W:0.166 / U:0.108 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site