Date: Tue, 29 Jun 1999 14:10:57 +0930 From: Greg Lehey <grog@lemis.com> To: Amol Mohite <amol2@m-net.arbornet.org> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: environment strings Message-ID: <19990629141057.I85121@freebie.lemis.com> In-Reply-To: <Pine.BSI.3.96.990628233126.24384A-100000@m-net.arbornet.org>; from Amol Mohite on Mon, Jun 28, 1999 at 11:32:59PM -0400 References: <19990629095659.B86806@freebie.lemis.com> <Pine.BSI.3.96.990628233126.24384A-100000@m-net.arbornet.org>
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On Monday, 28 June 1999 at 23:32:59 -0400, Amol Mohite wrote: >> On Monday, 28 June 1999 at 5:54:29 -0400, Amol Mohite wrote: >>> >>> Hi! >>> >>> i hope this is the right list for this qs. >>> >>> I wanted t know where the environment strings i bsd were stored after a >>> program execs another one. >> >> At the top of memory. You can access them by the standard (but >> undocumented) method: >> >> int main (int argc, char *argv [], char *envp []) >> >> envp is a pointer to the environment strings. This is true for every >> version of UNIX I know. >> >>> Is there any place I ca get hold of the ABIs for freebsd ? >> >> Can you be more specific? > > I know about envp. > > What I want to know is the exact position of these variables on the stack. As I said, at the top. > and if anywhere I can find some data, on the exact compisoition of > the stcak, then it will be very helpful. > > references of books and websites wil be most helpful. I think that, for FreeBSD, the source is the only place you'll find it. There's a brief description in "Porting UNIX Software" (http://www.ora.com/catalog/port/noframes.html), but that's not specific to FreeBSD. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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