/*
 * Copyright (c) 1982, 1986, 1989 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.
 *
 *	from: @(#)kern_xxx.c	7.17 (Berkeley) 4/20/91
 *	$Id: kern_xxx.c,v 1.12 1994/03/18 18:57:15 mycroft Exp $
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/reboot.h>
#include <sys/utsname.h>

/* ARGSUSED */
int
gethostid(p, uap, retval)
	struct proc *p;
	void *uap;
	long *retval;
{

	*retval = hostid;
	return (0);
}

struct sethostid_args {
	long	hostid;
};

/* ARGSUSED */
int
sethostid(p, uap, retval)
	struct proc *p;
	struct sethostid_args *uap;
	int *retval;
{
	int error;

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

struct gethostname_args {
	char	*hostname;
	u_int	len;
};

/* ARGSUSED */
int
gethostname(p, uap, retval)
	struct proc *p;
	struct gethostname_args *uap;
	int *retval;
{

	if (uap->len > hostnamelen + 1)
		uap->len = hostnamelen + 1;
	return (copyout((caddr_t)hostname, (caddr_t)uap->hostname, uap->len));
}

struct sethostname_args {
	char	*hostname;
	u_int	len;
};

/* ARGSUSED */
int
sethostname(p, uap, retval)
	struct proc *p;
	register struct sethostname_args *uap;
	int *retval;
{
	int error;

	if (error = suser(p->p_ucred, &p->p_acflag))
		return (error);
	if (uap->len > sizeof (hostname) - 1)
		return (EINVAL);
	hostnamelen = uap->len;
	error = copyin((caddr_t)uap->hostname, hostname, uap->len);
	hostname[hostnamelen] = 0;
	return (error);
}

struct getdomainname_args {
	char	*domainname;
	u_int	len;
};

/* ARGSUSED */
int
getdomainname(p, uap, retval)
	struct proc *p;
	struct getdomainname_args *uap;
	int *retval;
{
	if (uap->len > domainnamelen + 1)
		uap->len = domainnamelen + 1;
	return (copyout((caddr_t)domainname, (caddr_t)uap->domainname, uap->len));
}

struct setdomainname_args {
	char	*domainname;
	u_int	len;
};

/* ARGSUSED */
int
setdomainname(p, uap, retval)
	struct proc *p;
	struct setdomainname_args *uap;
	int *retval;
{
	int error;

	if (error = suser(p->p_ucred, &p->p_acflag))
		return (error);
	if (uap->len > sizeof (domainname) - 1)
		return EINVAL;
	domainnamelen = uap->len;
	error = copyin((caddr_t)uap->domainname, domainname, uap->len);
	domainname[domainnamelen] = 0;
	return (error);
}

struct uname_args {
	struct utsname	*name;
};

/* ARGSUSED */
int
uname(p, uap, retval)
	struct proc *p;
	struct uname_args *uap;
	int *retval;
{
	strncpy(utsname.nodename, hostname, sizeof(utsname.nodename)-1);
	return (copyout((caddr_t)&utsname, (caddr_t)uap->name,
	    sizeof(struct utsname)));
}

struct reboot_args {
	int	opt;
};

/* ARGSUSED */
int
reboot(p, uap, retval)
	struct proc *p;
	struct reboot_args *uap;
	int *retval;
{
	int error;

	if (error = suser(p->p_ucred, &p->p_acflag))
		return (error);
	boot(uap->opt);
	return (0);
}

#ifdef COMPAT_43
int
oquota()
{

	return (ENOSYS);
}
#endif

#ifdef SYSCALL_DEBUG
int	scdebug = 1;	/* XXX */

void
scdebug_call(p, code, narg, args)
	struct proc *p;
	int code, narg, *args;
{
	int i;

	if (!scdebug)
		return;

	printf("proc %d: syscall ", p->p_pid);
	if (code < 0 || code >= nsysent) {
		printf("OUT OF RANGE (%d)", code);
		code = 0;
	} else
		printf("%d", code);
	printf(" called: %s(", syscallnames[code]);
	for (i = 0; i < narg; i++)
		printf("0x%x, ", args[i]);
	printf(")\n");
}

void
scdebug_ret(p, code, error, retval)
	struct proc *p;
	int code, error, retval;
{
	if (!scdebug)
		return;

	printf("proc %d: syscall ", p->p_pid);
	if (code < 0 || code >= nsysent) {
		printf("OUT OF RANGE (%d)", code);
		code = 0;
	} else
		printf("%d", code);
	printf(" return: error = %d, retval = %d\n", error, retval);
}
#endif /* SYSCALL_DEBUG */