/*      $NetBSD: kern_info_09.c,v 1.22 2021/09/07 11:43:02 riastradh 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. 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_info_09.c,v 1.22 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/filedesc.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/syslog.h>
#include <sys/unistd.h>
#include <uvm/uvm_extern.h>
#include <sys/sysctl.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_info_09_syscalls[] = {
        { SYS_compat_09_ogetdomainname, 0,
            (sy_call_t *)compat_09_sys_getdomainname },
        { SYS_compat_09_osetdomainname, 0,
            (sy_call_t *)compat_09_sys_setdomainname },
        { SYS_compat_09_ouname, 0, (sy_call_t *)compat_09_sys_uname },
        { 0, 0, NULL }
};

/* ARGSUSED */
int
compat_09_sys_getdomainname(struct lwp *l,
    const struct compat_09_sys_getdomainname_args *uap, register_t *retval)
{
        /* {
                syscallarg(char *) domainname;
                syscallarg(int) len;
        } */
        int name[2];
        size_t sz;

        name[0] = CTL_KERN;
        name[1] = KERN_DOMAINNAME;
        sz = SCARG(uap,len);
        return (old_sysctl(&name[0], 2, SCARG(uap, domainname), &sz, 0, 0, l));
}


/* ARGSUSED */
int
compat_09_sys_setdomainname(struct lwp *l,
    const struct compat_09_sys_setdomainname_args *uap, register_t *retval)
{
        /* {
                syscallarg(char *) domainname;
                syscallarg(int) len;
        } */
        int name[2];

        name[0] = CTL_KERN;
        name[1] = KERN_DOMAINNAME;
        return (old_sysctl(&name[0], 2, 0, 0, SCARG(uap, domainname),
                           SCARG(uap, len), l));
}

struct outsname {
        char    sysname[32];
        char    nodename[32];
        char    release[32];
        char    version[32];
        char    machine[32];
};

/* ARGSUSED */
int
compat_09_sys_uname(struct lwp *l,
    const struct compat_09_sys_uname_args *uap, register_t *retval)
{
        /* {
                syscallarg(struct outsname *) name;
        } */
        struct outsname outsname;
        const char *cp;
        char *dp, *ep;

        memset(&outsname, 0, sizeof(outsname));
        strncpy(outsname.sysname, ostype, sizeof(outsname.sysname));
        strncpy(outsname.nodename, hostname, sizeof(outsname.nodename));
        strncpy(outsname.release, osrelease, sizeof(outsname.release));
        dp = outsname.version;
        ep = &outsname.version[sizeof(outsname.version) - 1];
        for (cp = version; *cp && *cp != '('; cp++)
                ;
        for (cp++; *cp && *cp != ')' && dp < ep; cp++)
                *dp++ = *cp;
        for (; *cp && *cp != '#'; cp++)
                ;
        for (; *cp && *cp != ':' && dp < ep; cp++)
                *dp++ = *cp;
        *dp = '\0';
        strncpy(outsname.machine, MACHINE, sizeof(outsname.machine));
        return (copyout((void *)&outsname, (void *)SCARG(uap, name),
                        sizeof(struct outsname)));
}

int
kern_info_09_init(void)
{

        return syscall_establish(NULL, kern_info_09_syscalls);
}

int
kern_info_09_fini(void)
{

        return syscall_disestablish(NULL, kern_info_09_syscalls);
}