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From: "Bruno. N. F. Pacheco" <brunonfp@fastmail.fm>
To: linux-c-programming@vger.kernel.org
Subject: Re: New project
Date: Fri, 26 Jul 2002 11:14:00 -0300 (BRT)	[thread overview]
Message-ID: <Pine.LNX.4.20.0207261112260.204-100000@hexa.org> (raw)
In-Reply-To: <20020726064156.C365@nietzsche.metrotel.net.co>

Are you sure you read execve(2) man page? You just have to pass your env
variables in the last arguments, something like:

char *argz[] = {
    "/bin/sh",
    NULL
};

char *envz[] = {
    "PATH=/bin:/sbin:/usr/bin:/usr/sbin",
    "TERM=v100",
    "FOO=bar",
    NULL
};

execve(argz[0], argz, envz);

	-- Bruno N. F. Pacheco

On Fri, 26 Jul 2002, xlp wrote:

> Hi, I am coding a new project that demands me advanced C programming, I am bored
> of "Learn how to program in C" and those basic C tasks.
> I decided to make my own projects, understand manual pages style, learn how
> to make sucessfull web search, use irc channel and so on...
> I am coding a project, that It's a like a telnetd with login features, it
> becomes a daemon, listens on certain port, accepts connection, autenticate, and
> execute a shell.
> The problem is when authentication is successful, It execve() a /bin/sh
> however, I want to define certain variable such as PATH, TERM, etc.
> I want that when a client 'logs in', my daemon set certain variables (ej.
> PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin) and then
> executes the shell, so the client has a presetted variables on his session.
> You may think, Why dont you read his .cshrc ?, I dont want to read any file
> on the system , I just want my daemon set everything and then executes the 
> shell.
> smthg like:
> char *PATH="/bin:/sbin:/usr/bin:/usr/sbin";
> char *TERM="vt100";
> char *FOO="bar";
> 
> I read putenv() man, Does it have any relation?, I dont know who to put it
> to work...
> 
> Thank you for any advice/help
> 
> bye.
> 
> 
> -
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> 


      reply	other threads:[~2002-07-26 14:14 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-07-26 11:41 New project xlp
2002-07-26 14:14 ` Bruno. N. F. Pacheco [this message]

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