From mboxrd@z Thu Jan  1 00:00:00 1970
From: a.biardi@tiscali.it
Subject: Re: argv[0]
Date: Fri, 13 Jan 2006 12:52:26 +0100
Message-ID: <200601131252.26737.a.biardi@tiscali.it>
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On Friday 13 January 2006 10:52, you wrote:

> Hello Andrea,
>
> On Fri, 13 Jan 2006 00:16:23 +0100 a.biardi@tiscali.it wrote:
> > Hi,
> >
> > Is there any C function that can tell me what argv[0] is, outside
> > main()?
> >
> > I thought to use getpid() and then look at /proc/<pid>/cmdline
> > but doesn't seem portable. Any hints?
>
> For instance, in main(), you can store argc and argv into global
> const pointers that you can use anywhere else.
>
> Here's an example (see the attached files):
>
> $ gcc main.c elsewhere.c
> $ ./a.out
>
> shows:
> main: 1 0xbf8526f4 './a.out'
> sample1: 1 0xbf8526f4 './a.out'
> sample2: 1 0xbf8526f4 './a.out'
>
>
> HTH,

Thanks, I know that. But I am developing a library, and have no access 
to the real main().

I could ask the user of my library to place a call to an init() 
function in main(), passing argv[0] along, but I don't like this 
solution very much.

Assuming I don't have access to main(), is there any other way to 
retrieve argv[0]?

Thanks,
Andrea.