NetBSD/sys/compat/common/kern_info_43.c

/*	$NetBSD: kern_info_43.c,v 1.5 1996/02/21 00:11:12 cgd Exp $	*/

/*
 * Copyright (c) 1982, 1986, 1991, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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.
 *
 *	@(#)subr_xxx.c	8.1 (Berkeley) 6/10/93
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/filedesc.h>
#include <sys/kernel.h>
#include <sys/vnode.h>
#include <sys/proc.h>
#include <sys/file.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/fcntl.h>
#include <sys/malloc.h>
#include <sys/syslog.h>
#include <sys/unistd.h>
#include <sys/resourcevar.h>
#include <vm/vm.h>
#include <sys/sysctl.h>

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

int
compat_43_sys_getdtablesize(p, v, retval)
	struct proc *p;
	void *v;
	register_t *retval;
{

	*retval = min((int)p->p_rlimit[RLIMIT_NOFILE].rlim_cur, maxfiles);
	return (0);
}


/* ARGSUSED */
int
compat_43_sys_gethostid(p, v, retval)
	struct proc *p;
	void *v;
	register_t *retval;
{

	*(int32_t *)retval = hostid;
	return (0);
}


/*ARGSUSED*/
int
compat_43_sys_gethostname(p, v, retval)
	struct proc *p;
	void *v;
	register_t *retval;
{
	struct compat_43_sys_gethostname_args /* {
		syscallarg(char *) hostname;
		syscallarg(u_int) len;
	} */ *uap = v;
	int name;
	size_t sz;

	name = KERN_HOSTNAME;
	sz = SCARG(uap, len);
	return (kern_sysctl(&name, 1, SCARG(uap, hostname), &sz, 0, 0, p));
}

#define	KINFO_PROC		(0<<8)
#define	KINFO_RT		(1<<8)
#define	KINFO_VNODE		(2<<8)
#define	KINFO_FILE		(3<<8)
#define	KINFO_METER		(4<<8)
#define	KINFO_LOADAVG		(5<<8)
#define	KINFO_CLOCKRATE		(6<<8)

int
compat_43_sys_getkerninfo(p, v, retval)
	struct proc *p;
	void *v;
	register_t *retval;
{
	register struct compat_43_sys_getkerninfo_args /* {
		syscallarg(int) op;
		syscallarg(char *) where;
		syscallarg(int *) size;
		syscallarg(int) arg;
	} */ *uap = v;
	int error, name[5];
	size_t size;

	if (SCARG(uap, size) && (error = copyin((caddr_t)SCARG(uap, size),
	    (caddr_t)&size, sizeof(size))))
		return (error);

	switch (SCARG(uap, op) & 0xff00) {

	case KINFO_RT:
		name[0] = PF_ROUTE;
		name[1] = 0;
		name[2] = (SCARG(uap, op) & 0xff0000) >> 16;
		name[3] = SCARG(uap, op) & 0xff;
		name[4] = SCARG(uap, arg);
		error =
		    net_sysctl(name, 5, SCARG(uap, where), &size, NULL, 0, p);
		break;

	case KINFO_VNODE:
		name[0] = KERN_VNODE;
		error =
		    kern_sysctl(name, 1, SCARG(uap, where), &size, NULL, 0, p);
		break;

	case KINFO_PROC:
		name[0] = KERN_PROC;
		name[1] = SCARG(uap, op) & 0xff;
		name[2] = SCARG(uap, arg);
		error =
		    kern_sysctl(name, 3, SCARG(uap, where), &size, NULL, 0, p);
		break;

	case KINFO_FILE:
		name[0] = KERN_FILE;
		error =
		    kern_sysctl(name, 1, SCARG(uap, where), &size, NULL, 0, p);
		break;

	case KINFO_METER:
		name[0] = VM_METER;
		error =
		    vm_sysctl(name, 1, SCARG(uap, where), &size, NULL, 0, p);
		break;

	case KINFO_LOADAVG:
		name[0] = VM_LOADAVG;
		error =
		    vm_sysctl(name, 1, SCARG(uap, where), &size, NULL, 0, p);
		break;

	case KINFO_CLOCKRATE:
		name[0] = KERN_CLOCKRATE;
		error =
		    kern_sysctl(name, 1, SCARG(uap, where), &size, NULL, 0, p);
		break;

	default:
		return (EOPNOTSUPP);
	}
	if (error)
		return (error);
	*retval = size;
	if (SCARG(uap, size))
		error = copyout((caddr_t)&size, (caddr_t)SCARG(uap, size),
		    sizeof(size));
	return (error);
}


/* ARGSUSED */
int
compat_43_sys_sethostid(p, v, retval)
	struct proc *p;
	void *v;
	register_t *retval;
{
	struct compat_43_sys_sethostid_args /* {
		syscallarg(int32_t) hostid;
	} */ *uap = v;
	int error;

	if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
		return (error);
	hostid = SCARG(uap, hostid);
	return (0);
}


/* ARGSUSED */
int
compat_43_sys_sethostname(p, v, retval)
	struct proc *p;
	void *v;
	register_t *retval;
{
	struct compat_43_sys_sethostname_args *uap = v;
	int name;
	int error;

	if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
		return (error);
	name = KERN_HOSTNAME;
	return (kern_sysctl(&name, 1, 0, 0, SCARG(uap, hostname),
			    SCARG(uap, len), p));
}