2006-09-13 09:05:39 +00:00
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/*-
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* Copyright (c) 2006 nCircle Network Security, Inc.
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2007-09-09 23:08:39 +00:00
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* Copyright (c) 2007 Robert N. M. Watson
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2006-09-13 09:05:39 +00:00
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* All rights reserved.
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*
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* This software was developed by Robert N. M. Watson for the TrustedBSD
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* Project under contract to nCircle Network Security, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR, NCIRCLE NETWORK SECURITY,
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* INC., OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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2007-09-09 23:08:39 +00:00
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/*-
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2006-09-13 09:05:39 +00:00
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* Test that raising current resource limits above hard resource limits
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2007-09-09 23:08:39 +00:00
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* requires privilege. We test three cases:
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2006-09-13 09:05:39 +00:00
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*
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2007-09-09 23:08:39 +00:00
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* - Raise the current above the maximum (privileged).
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* - Raise the current to the maximum (unprivileged).
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* - Raise the maximum (privileged).
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2006-09-13 09:05:39 +00:00
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*/
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <err.h>
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#include <errno.h>
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#include <unistd.h>
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#include "main.h"
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2007-09-09 23:08:39 +00:00
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static int initialized;
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static struct rlimit rl_base;
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static struct rlimit rl_lowered;
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2006-09-13 09:05:39 +00:00
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2007-09-09 23:08:39 +00:00
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int
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priv_proc_setrlimit_setup(int asroot, int injail, struct test *test)
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{
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2006-09-13 09:05:39 +00:00
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2007-09-09 23:08:39 +00:00
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if (getrlimit(RLIMIT_DATA, &rl_base) < 0) {
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warn("priv_proc_setrlimit_setup: getrlimit");
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return (-1);
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}
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2006-09-13 09:05:39 +00:00
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/*
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2007-09-09 23:08:39 +00:00
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* Must lower current and limit to make sure there's room to try to
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* raise them during tests. Set current lower than max so we can
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* raise it later also.
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2006-09-13 09:05:39 +00:00
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*/
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2007-09-09 23:08:39 +00:00
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rl_lowered = rl_base;
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rl_lowered.rlim_cur -= 20;
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rl_lowered.rlim_max -= 10;
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if (setrlimit(RLIMIT_DATA, &rl_lowered) < 0) {
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warn("priv_proc_setrlimit_setup: setrlimit");
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return (-1);
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}
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initialized = 1;
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return (0);
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}
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2006-09-13 09:05:39 +00:00
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2007-09-09 23:08:39 +00:00
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/*
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* Try increasing the maximum limits on the process, which requires
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* privilege.
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*/
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void
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priv_proc_setrlimit_raisemax(int asroot, int injail, struct test *test)
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{
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struct rlimit rl;
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int error;
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2006-09-13 09:05:39 +00:00
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2007-09-09 23:08:39 +00:00
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rl = rl_lowered;
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rl.rlim_max = rl_base.rlim_max;
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error = setrlimit(RLIMIT_DATA, &rl);
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if (asroot && injail)
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expect("priv_proc_setrlimit_raisemax(asroot, injail)", error,
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0, 0);
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if (asroot && !injail)
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expect("priv_proc_setrlimit_raisemax(asroot, !injail)",
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error, 0, 0);
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if (!asroot && injail)
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expect("priv_proc_setrlimit_raisemax(!asroot, injail)",
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error, -1, EPERM);
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if (!asroot && !injail)
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expect("priv_proc_setrlimit_raisemax(!asroot, !injail)",
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error, -1, EPERM);
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}
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2006-09-13 09:05:39 +00:00
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2007-09-09 23:08:39 +00:00
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/*
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* Try setting the current limit to the current maximum, which is allowed
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* without privilege.
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*/
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void
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priv_proc_setrlimit_raisecur_nopriv(int asroot, int injail,
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struct test *test)
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{
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struct rlimit rl;
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int error;
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2006-09-13 09:05:39 +00:00
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2007-09-09 23:08:39 +00:00
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rl = rl_lowered;
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rl.rlim_cur = rl.rlim_max;
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error = setrlimit(RLIMIT_DATA, &rl);
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if (asroot && injail)
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expect("priv_proc_setrlimit_raiscur_nopriv(asroot, injail)",
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error, 0, 0);
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if (asroot && !injail)
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expect("priv_proc_setrlimit_raisecur_nopriv(asroot, !injail)",
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error, 0, 0);
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if (!asroot && injail)
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expect("priv_proc_setrlimit_raisecur_nopriv(!asroot, injail)",
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error, 0, 0);
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if (!asroot && !injail)
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expect("priv_proc_setrlimit_raisecur_nopriv(!asroot, !injail)",
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error, 0, 0);
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}
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2006-09-13 09:05:39 +00:00
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2007-09-09 23:08:39 +00:00
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/*
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* Try raising the current limits above the maximum, which requires
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* privilege.
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*/
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void
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priv_proc_setrlimit_raisecur(int asroot, int injail, struct test *test)
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{
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struct rlimit rl;
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int error;
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2006-09-13 09:05:39 +00:00
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2007-09-09 23:08:39 +00:00
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rl = rl_lowered;
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rl.rlim_cur = rl.rlim_max + 10;
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error = setrlimit(RLIMIT_DATA, &rl);
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if (asroot && injail)
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expect("priv_proc_setrlimit_raisecur(asroot, injail)", error,
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0, 0);
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if (asroot && !injail)
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expect("priv_proc_setrlimit_raisecur(asroot, !injail)",
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error, 0, 0);
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if (!asroot && injail)
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expect("priv_proc_setrlimit_raisecur(!asroot, injail)",
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error, -1, EPERM);
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if (!asroot && !injail)
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expect("priv_proc_setrlimit_raisecur(!asroot, !injail)",
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error, -1, EPERM);
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}
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2006-09-13 09:05:39 +00:00
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2007-09-09 23:08:39 +00:00
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void
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priv_proc_setrlimit_cleanup(int asroot, int injail, struct test *test)
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{
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2006-09-13 09:05:39 +00:00
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2007-09-09 23:08:39 +00:00
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if (initialized)
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(void)setrlimit(RLIMIT_DATA, &rl_base);
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initialized = 0;
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2006-09-13 09:05:39 +00:00
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}
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