Date: Thu, 2 Jan 2003 14:51:14 -0600 From: wgrim@siue.edu To: phk@FreeBSD.ORG Cc: kientzle@acm.org, Terry Lambert <tlambert2@mindspring.com>, freebsd-hackers@FreeBSD.ORG Subject: Re: Reading rc.conf from C programs? Message-ID: <1041540674.3e14a642d30b5@webmail1.isg.siue.edu> In-Reply-To: <4351.1041538966@critter.freebsd.dk> References: <4351.1041538966@critter.freebsd.dk>
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Well, perhaps I'm missing something here, but can't you just tokenize the items in rc.conf using strtok after opening up the file in your C program? And char buffer sizes is a problem, you can record where the file pointer is, do you a strtok on say '=', subtract the new file pointer size with the old one, malloc your char string, then move the file pointer back to its previous location. I mean, I may certainly be missing something here, but I've never noticed rc.conf be anything other than a left hand value and a right hand value (often enclosed in quotes), with both sides being separated by an equal sign. -Mike Quoting phk@FreeBSD.ORG: > In message <3E149EAF.9040100@acm.org>, Tim Kientzle writes: > >Terry Lambert wrote: > > > >> Tim Kientzle wrote: > >>>I'm trying to figure out how to read and use > >>>/etc/rc.conf configuration variables from within > >>>a C program. > >> > >> #!/bin/sh > >> # Throw all of rc.conf into the environemnet so a C program > >> # named "fred" can read any of them with "getenv". > >> . /etc/rc.conf > >> fred > > You can get a decent simulation this way: > > #!/bin/sh > echo "*** NOISE" > set > echo "*** DATA+NOISE" > . /etc/rc.conf > set > > Then pipe this into your program and separate the data from the noise. > > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > phk@FreeBSD.ORG | TCP/IP since RFC 956 > FreeBSD committer | BSD since 4.3-tahoe > Never attribute to malice what can adequately be explained by incompetence. > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message > ------------------------------------------------- SIUE Web Mail To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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