xref: /netbsd-src/sys/compat/common/kern_resource_43.c (revision 41aa5859b647891f23013f613e0858c4b789a7bf)

/*	$NetBSD: kern_resource_43.c,v 1.23 2021/09/07 11:43:02 riastradh Exp $	*/

/*-
 * Copyright (c) 1982, 1986, 1991, 1993
 *	The Regents of the University of California.  All rights reserved.
 * (c) UNIX System Laboratories, Inc.
 * All or some portions of this file are derived from material licensed
 * to the University of California by American Telephone and Telegraph
 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
 * the permission of UNIX System Laboratories, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)kern_resource.c	8.5 (Berkeley) 1/21/94
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_resource_43.c,v 1.23 2021/09/07 11:43:02 riastradh Exp $");

#if defined(_KERNEL_OPT)
#include "opt_compat_netbsd.h"
#endif

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/file.h>
#include <sys/resourcevar.h>
#include <sys/proc.h>

#include <sys/mount.h>
#include <sys/syscall.h>
#include <sys/syscallvar.h>
#include <sys/syscallargs.h>

#include <compat/common/compat_mod.h>

static struct syscall_package kern_resource_43_syscalls[] = {
	{ SYS_compat_43_ogetrlimit, 0, (sy_call_t *)compat_43_sys_getrlimit },
	{ SYS_compat_43_osetrlimit, 0, (sy_call_t *)compat_43_sys_setrlimit },
	{ 0, 0, NULL }
};

/* ARGSUSED */
int
compat_43_sys_getrlimit(struct lwp *l, const struct compat_43_sys_getrlimit_args *uap, register_t *retval)
{
	/* {
		syscallarg(int) which;
		syscallarg(struct orlimit *) rlp;
	} */
	struct proc *p = l->l_proc;
	int which = SCARG(uap, which);
	struct orlimit olim;

	if ((u_int)which >= RLIM_NLIMITS)
		return (EINVAL);
	memset(&olim, 0, sizeof(olim));
	olim.rlim_cur = p->p_rlimit[which].rlim_cur;
	if (olim.rlim_cur == -1)
		olim.rlim_cur = 0x7fffffff;
	olim.rlim_max = p->p_rlimit[which].rlim_max;
	if (olim.rlim_max == -1)
		olim.rlim_max = 0x7fffffff;
	return copyout(&olim, SCARG(uap, rlp), sizeof(olim));
}

/* ARGSUSED */
int
compat_43_sys_setrlimit(struct lwp *l, const struct compat_43_sys_setrlimit_args *uap, register_t *retval)
{
	/* {
		syscallarg(int) which;
		syscallarg(const struct orlimit *) rlp;
	} */
	int which = SCARG(uap, which);
	struct orlimit olim;
	struct rlimit lim;
	int error;

	error = copyin(SCARG(uap, rlp), &olim, sizeof(struct orlimit));
	if (error)
		return (error);
	lim.rlim_cur = olim.rlim_cur;
	lim.rlim_max = olim.rlim_max;
	return (dosetrlimit(l, l->l_proc, which, &lim));
}

int
kern_resource_43_init(void)
{

	return syscall_establish(NULL, kern_resource_43_syscalls);
}

int
kern_resource_43_fini(void)
{

	return syscall_disestablish(NULL, kern_resource_43_syscalls);
}