301 lines
7.2 KiB
C
301 lines
7.2 KiB
C
/* $NetBSD: netbsd32_sysctl.c,v 1.10 2003/06/29 22:29:40 fvdl Exp $ */
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/*
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* Copyright (c) 1998, 2001 Matthew R. Green
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* 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. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: netbsd32_sysctl.c,v 1.10 2003/06/29 22:29:40 fvdl Exp $");
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#if defined(_KERNEL_OPT)
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#include "opt_ddb.h"
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/vnode.h>
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#include <sys/sa.h>
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#include <sys/syscallargs.h>
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#include <sys/proc.h>
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#define __SYSCTL_PRIVATE
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#include <sys/sysctl.h>
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#include <uvm/uvm_extern.h>
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#include <compat/netbsd32/netbsd32.h>
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#include <compat/netbsd32/netbsd32_syscall.h>
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#include <compat/netbsd32/netbsd32_syscallargs.h>
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#include <compat/netbsd32/netbsd32_conv.h>
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#if defined(DDB)
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#include <ddb/ddbvar.h>
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#endif
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int uvm_sysctl32(int *, u_int, void *, size_t *, void *, size_t, struct proc *);
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int kern_sysctl32(int *, u_int, void *, size_t *, void *, size_t, struct proc *);
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int hw_sysctl32(int *, u_int, void *, size_t *, void *, size_t, struct proc *);
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/*
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* uvm_sysctl32: sysctl hook into UVM system, handling special 32-bit
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* sensitive calls.
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*/
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int
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uvm_sysctl32(name, namelen, oldp, oldlenp, newp, newlen, p)
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int *name;
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u_int namelen;
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void *oldp;
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size_t *oldlenp;
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void *newp;
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size_t newlen;
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struct proc *p;
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{
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struct netbsd32_loadavg av32;
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/* all sysctl names at this level are terminal */
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if (namelen != 1)
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return (ENOTDIR); /* overloaded */
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switch (name[0]) {
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case VM_LOADAVG:
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netbsd32_from_loadavg(&av32, &averunnable);
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return (sysctl_rdstruct(oldp, oldlenp, newp, &av32,
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sizeof(av32)));
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default:
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return (EOPNOTSUPP);
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}
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/* NOTREACHED */
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}
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/*
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* kern_sysctl32: sysctl hook into KERN system, handling special 32-bit
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* sensitive calls.
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*/
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int
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kern_sysctl32(name, namelen, oldp, oldlenp, newp, newlen, p)
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int *name;
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u_int namelen;
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void *oldp;
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size_t *oldlenp;
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void *newp;
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size_t newlen;
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struct proc *p;
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{
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struct netbsd32_timeval bt32;
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/* All sysctl names at this level, except for a few, are terminal. */
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switch (name[0]) {
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#if 0
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case KERN_PROC:
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case KERN_PROC2:
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case KERN_PROF:
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case KERN_MBUF:
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case KERN_PROC_ARGS:
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case KERN_SYSVIPC_INFO:
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/* Not terminal. */
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break;
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#endif
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default:
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if (namelen != 1)
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return (ENOTDIR); /* overloaded */
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}
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switch (name[0]) {
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case KERN_BOOTTIME:
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netbsd32_from_timeval(&boottime, &bt32);
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return (sysctl_rdstruct(oldp, oldlenp, newp, &bt32,
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sizeof(struct netbsd32_timeval)));
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default:
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return (EOPNOTSUPP);
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}
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/* NOTREACHED */
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}
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/*
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* hardware related system variables.
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*/
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int
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hw_sysctl32(int *name, u_int namelen, void *oldp, size_t *oldlenp,
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void *newp, size_t newlen, struct proc *p)
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{
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extern char machine_arch32[];
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switch (name[0]) {
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case HW_MACHINE_ARCH:
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return (sysctl_rdstring(oldp, oldlenp, newp, machine_arch32));
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default:
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return (EOPNOTSUPP);
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}
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/* NOTREACHED */
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}
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int
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netbsd32___sysctl(l, v, retval)
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struct lwp *l;
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void *v;
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register_t *retval;
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{
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struct netbsd32___sysctl_args /* {
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syscallarg(netbsd32_intp) name;
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syscallarg(u_int) namelen;
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syscallarg(netbsd32_voidp) old;
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syscallarg(netbsd32_size_tp) oldlenp;
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syscallarg(netbsd32_voidp) new;
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syscallarg(netbsd32_size_t) newlen;
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} */ *uap = v;
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int error;
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netbsd32_size_t savelen = 0;
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size_t oldlen = 0;
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sysctlfn *fn;
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struct proc *p = l->l_proc;
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int name[CTL_MAXNAME];
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/*
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* Some of these sysctl functions do their own copyin/copyout.
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* We need to disable or emulate the ones that need their
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* arguments converted.
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*/
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if (SCARG(uap, new) != NULL &&
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(error = suser(p->p_ucred, &p->p_acflag)))
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return (error);
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/*
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* all top-level sysctl names are non-terminal
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*/
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if (SCARG(uap, namelen) > CTL_MAXNAME || SCARG(uap, namelen) < 2)
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return (EINVAL);
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error = copyin((caddr_t)NETBSD32PTR64(SCARG(uap, name)), &name,
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SCARG(uap, namelen) * sizeof(int));
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if (error)
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return (error);
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switch (name[0]) {
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case CTL_KERN:
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switch (name[1]) {
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#if 0
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case KERN_FILE:
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case KERN_NTPTIME:
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case KERN_SYSVIPC_INFO:
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#endif
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case KERN_BOOTTIME:
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fn = kern_sysctl32;
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break;
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default:
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fn = kern_sysctl;
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break;
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}
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break;
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case CTL_HW:
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switch (name[1]) {
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case HW_MACHINE_ARCH:
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fn = hw_sysctl32;
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break;
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default:
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fn = hw_sysctl;
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break;
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}
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break;
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case CTL_VM:
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switch (name[1]) {
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case VM_LOADAVG:
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fn = uvm_sysctl32; /* need to convert a `long' */
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break;
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default:
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fn = uvm_sysctl;
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break;
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}
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break;
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case CTL_NET:
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fn = net_sysctl;
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break;
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case CTL_VFS:
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fn = vfs_sysctl;
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break;
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case CTL_MACHDEP:
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fn = cpu_sysctl;
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break;
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#ifdef DEBUG
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case CTL_DEBUG:
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fn = debug_sysctl;
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break;
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#endif
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#ifdef DDB
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case CTL_DDB:
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fn = ddb_sysctl;
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break;
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#endif
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case CTL_PROC:
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fn = proc_sysctl;
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break;
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default:
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return (EOPNOTSUPP);
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}
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/*
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* XXX Hey, we wire `old', but what about `new'?
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*/
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if (SCARG(uap, oldlenp) &&
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(error = copyin((caddr_t)NETBSD32PTR64(SCARG(uap, oldlenp)),
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&savelen, sizeof(savelen))))
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return (error);
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if (SCARG(uap, old) != NULL) {
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error = lockmgr(&sysctl_memlock, LK_EXCLUSIVE, NULL);
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if (error)
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return (error);
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error = uvm_vslock(p, (void *)(vaddr_t)SCARG(uap, old), savelen,
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VM_PROT_WRITE);
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if (error) {
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(void) lockmgr(&sysctl_memlock, LK_RELEASE, NULL);
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return error;
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}
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oldlen = savelen;
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}
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error = (*fn)(name + 1, SCARG(uap, namelen) - 1,
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(void *)NETBSD32PTR64(SCARG(uap, old)), &oldlen,
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(void *)NETBSD32PTR64(SCARG(uap, new)), SCARG(uap, newlen), p);
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if (SCARG(uap, old) != NULL) {
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uvm_vsunlock(p, (void *)NETBSD32PTR64(SCARG(uap, old)),
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savelen);
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(void) lockmgr(&sysctl_memlock, LK_RELEASE, NULL);
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}
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savelen = oldlen;
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if (error)
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return (error);
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if (SCARG(uap, oldlenp))
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error = copyout(&savelen,
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(caddr_t)NETBSD32PTR64(SCARG(uap, oldlenp)),
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sizeof(savelen));
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return (error);
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}
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