lkml.org 
[lkml]   [2004]   [Aug]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: setproctitle
* William Lee Irwin III <wli@holomorphy.com> dixit:
>> The command-line arguments are being fetched from the process address
>> space, i.e. simply editing argv[] in userspace will have the desired
>> effect. Though this code is butt ugly.

On Fri, Aug 20, 2004 at 06:20:27PM +0200, DervishD wrote:
> The problem with this is that is non-portable. Not all Unices
> (AFAIK) have this behaviour. The portable solution for changing
> argv[0] is to use ONLY the space currently allocated to argv[0]. I
> mean, you take argv[0], do a strlen() and overwrite only strlen bytes
> of it. The problem with this is that you cannot write an arbitrary
> string there. If all Unices provide 'setproctitle' that problem
> dissapears.
> Anyway is cool to know that, under Linux, I can change the
> argv[0] with no problems.

It is not portable behavior. It is a description of how to implement
setproctitle(3) in Linux.


-- wli
-
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 14:05    [W:0.141 / U:0.480 seconds]
©2003-2011 Jasper Spaans. Advertise on this site