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From: emigh@ncsugn.ncsu.edu (Ted H. Emigh)
Newsgroups: comp.unix.wizards,comp.unix.questions
Subject: Re: How to set ulimit in SysV
Message-ID: <674@ncsugn.ncsu.edu>
Date: Sun, 11-Oct-87 20:12:26 EDT
Article-I.D.: ncsugn.674
Posted: Sun Oct 11 20:12:26 1987
Date-Received: Tue, 13-Oct-87 00:57:47 EDT
References: <1408@dasys1.UUCP> <6475@brl-smoke.ARPA> <6502@brl-smoke.ARPA> <275@minya.UUCP>
Reply-To: emigh@ncsugn.UUCP (Ted H. Emigh)
Organization: Genetics, North Carolina State University, Raleigh, NC
Lines: 49
Keywords: patch ulimit
Xref: mnetor comp.unix.wizards:4836 comp.unix.questions:4497

In article <275@minya.UUCP> jc@minya.UUCP (jc) writes:
>> >As for the original problem, can't superuser set the ligit up as
>> >well as down?
>> 
>> That IS the original problem!  ONLY the super-user can get around
>> the ridiculously small initial ulimit coded into the kernel!
>
>What you do is change your inittab entries for getty to:
>
>	t3:2:respawn:/bin/sh /etc/Getty tty03 tty03
>
>The /etc/Getty script looks like:
>
>	ulimit 8000 # or whatever you like.
>	exec /etc/getty $*
>
ncsugn has been using the following program for some 5 months -- the
original came from the net from some person at AT&T.  ncsugn is a 3B2/400
running SVR3.0.

/*
	Change the file size limit

Compile this and put it in place of the usual init program:

cc ulimit.init.c -o ulimit.init
mv /etc/init /etc/real.init
mv ulimit.init /etc/init
chmod 754 /etc/init               <-- Same as the old init

The next time the machine is booted, the ulimit will be changed.

*/
main(argc, argv)
int argc;
char *argv[];
{

	ulimit(2, 32768L);	/* "2" sets ulimit.  32768 = 16Mb. */

	execv("/etc/real.init", argv);
}

--------------------

-- 
Ted H. Emigh, Dept. Genetics and Statistics, NCSU, Raleigh, NC
uucp:	mcnc!ncsuvx!ncsugn!emigh	internet:  emigh%ncsugn.ncsu.edu
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