431 lines
10 KiB
C
431 lines
10 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1982, 1986, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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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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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)kern_xxx.c 8.2 (Berkeley) 11/14/93
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/sysproto.h>
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#include <sys/kernel.h>
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#include <sys/priv.h>
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#include <sys/proc.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <sys/utsname.h>
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#include <vm/vm_param.h>
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#if defined(COMPAT_43)
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int
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ogethostname(struct thread *td, struct ogethostname_args *uap)
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{
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int name[2];
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size_t len = uap->len;
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name[0] = CTL_KERN;
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name[1] = KERN_HOSTNAME;
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return (userland_sysctl(td, name, 2, uap->hostname, &len,
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1, 0, 0, 0, 0));
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}
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int
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osethostname(struct thread *td, struct osethostname_args *uap)
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{
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int name[2];
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name[0] = CTL_KERN;
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name[1] = KERN_HOSTNAME;
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return (userland_sysctl(td, name, 2, 0, 0, 0, uap->hostname,
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uap->len, 0, 0));
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}
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#ifndef _SYS_SYSPROTO_H_
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struct ogethostid_args {
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int dummy;
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};
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#endif
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/* ARGSUSED */
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int
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ogethostid(struct thread *td, struct ogethostid_args *uap)
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{
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size_t len = sizeof(long);
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int name[2];
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name[0] = CTL_KERN;
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name[1] = KERN_HOSTID;
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return (kernel_sysctl(td, name, 2, (long *)td->td_retval, &len,
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NULL, 0, NULL, 0));
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}
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int
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osethostid(struct thread *td, struct osethostid_args *uap)
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{
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int name[2];
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name[0] = CTL_KERN;
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name[1] = KERN_HOSTID;
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return (kernel_sysctl(td, name, 2, NULL, NULL, &uap->hostid,
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sizeof(uap->hostid), NULL, 0));
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}
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int
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oquota(struct thread *td, struct oquota_args *uap)
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{
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return (ENOSYS);
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}
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#define KINFO_PROC (0<<8)
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#define KINFO_RT (1<<8)
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#define KINFO_VNODE (2<<8)
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#define KINFO_FILE (3<<8)
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#define KINFO_METER (4<<8)
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#define KINFO_LOADAVG (5<<8)
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#define KINFO_CLOCKRATE (6<<8)
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/* Non-standard BSDI extension - only present on their 4.3 net-2 releases */
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#define KINFO_BSDI_SYSINFO (101<<8)
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/*
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* XXX this is bloat, but I hope it's better here than on the potentially
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* limited kernel stack... -Peter
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*/
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static struct {
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int bsdi_machine; /* "i386" on BSD/386 */
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/* ^^^ this is an offset to the string, relative to the struct start */
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char *pad0;
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long pad1;
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long pad2;
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long pad3;
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u_long pad4;
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u_long pad5;
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u_long pad6;
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int bsdi_ostype; /* "BSD/386" on BSD/386 */
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int bsdi_osrelease; /* "1.1" on BSD/386 */
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long pad7;
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long pad8;
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char *pad9;
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long pad10;
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long pad11;
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int pad12;
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long pad13;
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quad_t pad14;
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long pad15;
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struct timeval pad16;
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/* we dont set this, because BSDI's uname used gethostname() instead */
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int bsdi_hostname; /* hostname on BSD/386 */
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/* the actual string data is appended here */
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} bsdi_si;
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/*
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* this data is appended to the end of the bsdi_si structure during copyout.
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* The "char *" offsets are relative to the base of the bsdi_si struct.
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* This contains "FreeBSD\02.0-BUILT-nnnnnn\0i386\0", and these strings
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* should not exceed the length of the buffer here... (or else!! :-)
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*/
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static char bsdi_strings[80]; /* It had better be less than this! */
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int
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ogetkerninfo(struct thread *td, struct ogetkerninfo_args *uap)
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{
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int error, name[6];
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size_t size;
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u_int needed = 0;
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switch (uap->op & 0xff00) {
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case KINFO_RT:
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name[0] = CTL_NET;
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name[1] = PF_ROUTE;
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name[2] = 0;
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name[3] = (uap->op & 0xff0000) >> 16;
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name[4] = uap->op & 0xff;
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name[5] = uap->arg;
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error = userland_sysctl(td, name, 6, uap->where, uap->size,
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0, 0, 0, &size, 0);
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break;
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case KINFO_VNODE:
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name[0] = CTL_KERN;
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name[1] = KERN_VNODE;
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error = userland_sysctl(td, name, 2, uap->where, uap->size,
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0, 0, 0, &size, 0);
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break;
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case KINFO_PROC:
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name[0] = CTL_KERN;
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name[1] = KERN_PROC;
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name[2] = uap->op & 0xff;
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name[3] = uap->arg;
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error = userland_sysctl(td, name, 4, uap->where, uap->size,
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0, 0, 0, &size, 0);
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break;
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case KINFO_FILE:
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name[0] = CTL_KERN;
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name[1] = KERN_FILE;
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error = userland_sysctl(td, name, 2, uap->where, uap->size,
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0, 0, 0, &size, 0);
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break;
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case KINFO_METER:
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name[0] = CTL_VM;
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name[1] = VM_TOTAL;
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error = userland_sysctl(td, name, 2, uap->where, uap->size,
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0, 0, 0, &size, 0);
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break;
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case KINFO_LOADAVG:
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name[0] = CTL_VM;
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name[1] = VM_LOADAVG;
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error = userland_sysctl(td, name, 2, uap->where, uap->size,
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0, 0, 0, &size, 0);
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break;
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case KINFO_CLOCKRATE:
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name[0] = CTL_KERN;
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name[1] = KERN_CLOCKRATE;
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error = userland_sysctl(td, name, 2, uap->where, uap->size,
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0, 0, 0, &size, 0);
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break;
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case KINFO_BSDI_SYSINFO: {
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/*
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* this is pretty crude, but it's just enough for uname()
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* from BSDI's 1.x libc to work.
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*
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* *size gives the size of the buffer before the call, and
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* the amount of data copied after a successful call.
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* If successful, the return value is the amount of data
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* available, which can be larger than *size.
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*
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* BSDI's 2.x product apparently fails with ENOMEM if *size
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* is too small.
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*/
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u_int left;
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char *s;
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bzero((char *)&bsdi_si, sizeof(bsdi_si));
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bzero(bsdi_strings, sizeof(bsdi_strings));
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s = bsdi_strings;
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bsdi_si.bsdi_ostype = (s - bsdi_strings) + sizeof(bsdi_si);
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strcpy(s, ostype);
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s += strlen(s) + 1;
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bsdi_si.bsdi_osrelease = (s - bsdi_strings) + sizeof(bsdi_si);
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strcpy(s, osrelease);
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s += strlen(s) + 1;
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bsdi_si.bsdi_machine = (s - bsdi_strings) + sizeof(bsdi_si);
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strcpy(s, machine);
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s += strlen(s) + 1;
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needed = sizeof(bsdi_si) + (s - bsdi_strings);
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if ((uap->where == NULL) || (uap->size == NULL)) {
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/* process is asking how much buffer to supply.. */
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size = needed;
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error = 0;
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break;
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}
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if ((error = copyin(uap->size, &size, sizeof(size))) != 0)
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break;
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/* if too much buffer supplied, trim it down */
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if (size > needed)
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size = needed;
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/* how much of the buffer is remaining */
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left = size;
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if ((error = copyout((char *)&bsdi_si, uap->where, left)) != 0)
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break;
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/* is there any point in continuing? */
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if (left > sizeof(bsdi_si)) {
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left -= sizeof(bsdi_si);
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error = copyout(&bsdi_strings,
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uap->where + sizeof(bsdi_si), left);
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}
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break;
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}
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default:
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error = EOPNOTSUPP;
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break;
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}
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if (error == 0) {
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td->td_retval[0] = needed ? needed : size;
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if (uap->size) {
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error = copyout(&size, uap->size, sizeof(size));
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}
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}
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return (error);
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}
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#endif /* COMPAT_43 */
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#ifdef COMPAT_FREEBSD4
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/*
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* This is the FreeBSD-1.1 compatible uname(2) interface. These days it is
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* done in libc as a wrapper around a bunch of sysctl's. This must maintain
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* the old 1.1 binary ABI.
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*/
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#if SYS_NMLN != 32
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#error "FreeBSD-1.1 uname syscall has been broken"
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#endif
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#ifndef _SYS_SYSPROTO_H_
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struct uname_args {
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struct utsname *name;
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};
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#endif
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/* ARGSUSED */
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int
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freebsd4_uname(struct thread *td, struct freebsd4_uname_args *uap)
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{
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int name[2], error;
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size_t len;
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char *s, *us;
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name[0] = CTL_KERN;
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name[1] = KERN_OSTYPE;
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len = sizeof (uap->name->sysname);
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error = userland_sysctl(td, name, 2, uap->name->sysname, &len,
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1, 0, 0, 0, 0);
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if (error)
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return (error);
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subyte( uap->name->sysname + sizeof(uap->name->sysname) - 1, 0);
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name[1] = KERN_HOSTNAME;
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len = sizeof uap->name->nodename;
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error = userland_sysctl(td, name, 2, uap->name->nodename, &len,
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1, 0, 0, 0, 0);
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if (error)
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return (error);
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subyte( uap->name->nodename + sizeof(uap->name->nodename) - 1, 0);
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name[1] = KERN_OSRELEASE;
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len = sizeof uap->name->release;
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error = userland_sysctl(td, name, 2, uap->name->release, &len,
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1, 0, 0, 0, 0);
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if (error)
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return (error);
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subyte( uap->name->release + sizeof(uap->name->release) - 1, 0);
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/*
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name = KERN_VERSION;
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len = sizeof uap->name->version;
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error = userland_sysctl(td, name, 2, uap->name->version, &len,
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1, 0, 0, 0, 0);
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if (error)
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return (error);
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subyte( uap->name->version + sizeof(uap->name->version) - 1, 0);
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*/
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/*
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* this stupid hackery to make the version field look like FreeBSD 1.1
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*/
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for(s = version; *s && *s != '#'; s++);
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for(us = uap->name->version; *s && *s != ':'; s++) {
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error = subyte( us++, *s);
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if (error)
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return (error);
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}
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error = subyte( us++, 0);
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if (error)
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return (error);
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name[0] = CTL_HW;
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name[1] = HW_MACHINE;
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len = sizeof uap->name->machine;
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error = userland_sysctl(td, name, 2, uap->name->machine, &len,
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1, 0, 0, 0, 0);
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if (error)
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return (error);
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subyte( uap->name->machine + sizeof(uap->name->machine) - 1, 0);
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return (0);
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}
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#ifndef _SYS_SYSPROTO_H_
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struct getdomainname_args {
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char *domainname;
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int len;
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};
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#endif
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/* ARGSUSED */
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int
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freebsd4_getdomainname(struct thread *td,
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struct freebsd4_getdomainname_args *uap)
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{
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int name[2];
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size_t len = uap->len;
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name[0] = CTL_KERN;
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name[1] = KERN_NISDOMAINNAME;
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return (userland_sysctl(td, name, 2, uap->domainname, &len,
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1, 0, 0, 0, 0));
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}
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#ifndef _SYS_SYSPROTO_H_
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struct setdomainname_args {
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char *domainname;
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int len;
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};
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#endif
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/* ARGSUSED */
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int
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freebsd4_setdomainname(struct thread *td,
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struct freebsd4_setdomainname_args *uap)
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{
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int name[2];
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name[0] = CTL_KERN;
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name[1] = KERN_NISDOMAINNAME;
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return (userland_sysctl(td, name, 2, 0, 0, 0, uap->domainname,
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uap->len, 0, 0));
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}
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#endif /* COMPAT_FREEBSD4 */
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