234 lines
6.7 KiB
C
234 lines
6.7 KiB
C
/* $NetBSD: netbsd32_sysctl.c,v 1.15 2004/04/27 03:49:03 atatat Exp $ */
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/*
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* Copyright (c) 2003 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Andrew Brown.
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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 1.15 2004/04/27 03:49:03 atatat 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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#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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struct sysctlnode netbsd32_sysctl_root = {
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.sysctl_flags = SYSCTL_VERSION|CTLFLAG_ROOT|CTLTYPE_NODE,
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.sysctl_num = 0,
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.sysctl_name = "(netbsd32_root)",
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sysc_init_field(_sysctl_size, sizeof(struct sysctlnode)),
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};
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/*
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* sysctl helper routine for netbsd32's kern.boottime node
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*/
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static int
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netbsd32_sysctl_kern_boottime(SYSCTLFN_ARGS)
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{
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struct sysctlnode node;
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struct netbsd32_timeval bt32;
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netbsd32_from_timeval(&boottime, &bt32);
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node = *rnode;
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node.sysctl_data = &bt32;
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return (sysctl_lookup(SYSCTLFN_CALL(&node)));
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}
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/*
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* sysctl helper routine for netbsd32's vm.loadavg node
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*/
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static int
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netbsd32_sysctl_vm_loadavg(SYSCTLFN_ARGS)
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{
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struct sysctlnode node;
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struct netbsd32_loadavg av32;
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netbsd32_from_loadavg(&av32, &averunnable);
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node = *rnode;
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node.sysctl_data = &av32;
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return (sysctl_lookup(SYSCTLFN_CALL(&node)));
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}
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SYSCTL_SETUP(netbsd32_sysctl_emul_setup, "sysctl netbsd32 shadow tree setup")
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{
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struct sysctlnode *_root = &netbsd32_sysctl_root;
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extern char machine_arch32[];
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sysctl_createv(clog, 0, &_root, NULL,
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CTLFLAG_PERMANENT,
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CTLTYPE_NODE, "kern", NULL,
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NULL, 0, NULL, 0,
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CTL_KERN, CTL_EOL);
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sysctl_createv(clog, 0, &_root, NULL,
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CTLFLAG_PERMANENT,
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CTLTYPE_STRUCT, "boottime", NULL,
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netbsd32_sysctl_kern_boottime, 0, NULL,
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sizeof(struct netbsd32_timeval),
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CTL_KERN, KERN_BOOTTIME, CTL_EOL);
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sysctl_createv(clog, 0, &_root, NULL,
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CTLFLAG_PERMANENT,
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CTLTYPE_NODE, "vm", NULL,
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NULL, 0, NULL, 0,
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CTL_VM, CTL_EOL);
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sysctl_createv(clog, 0, &_root, NULL,
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CTLFLAG_PERMANENT,
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CTLTYPE_STRUCT, "loadavg", NULL,
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netbsd32_sysctl_vm_loadavg, 0, NULL,
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sizeof(struct netbsd32_loadavg),
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CTL_VM, VM_LOADAVG, CTL_EOL);
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sysctl_createv(clog, 0, &_root, NULL,
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CTLFLAG_PERMANENT,
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CTLTYPE_NODE, "hw", NULL,
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NULL, 0, NULL, 0,
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CTL_HW, CTL_EOL);
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sysctl_createv(clog, 0, &_root, NULL,
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CTLFLAG_PERMANENT,
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CTLTYPE_STRING, "machine_arch", NULL,
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NULL, 0, machine_arch32, 0,
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CTL_HW, HW_MACHINE_ARCH, CTL_EOL);
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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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struct sysctlnode *pnode;
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netbsd32_size_t netbsd32_oldlen;
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size_t oldlen, *oldlenp, savelen;
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int name[CTL_MAXNAME], error, nerror, *namep;
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void *newp, *oldp;
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/*
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* get and convert 32 bit size_t to native size_t
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*/
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namep = NETBSD32PTR64(SCARG(uap, name));
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oldp = NETBSD32PTR64(SCARG(uap, old));
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newp = NETBSD32PTR64(SCARG(uap, new));
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oldlenp = NETBSD32PTR64(SCARG(uap, oldlenp));
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oldlen = 0;
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if (oldlenp != NULL) {
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error = copyin(oldlenp, &netbsd32_oldlen,
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sizeof(netbsd32_oldlen));
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if (error)
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return (error);
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oldlen = netbsd32_oldlen;
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}
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savelen = oldlen;
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/*
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* retrieve name and see if we need to dispatch this query to
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* the shadow tree. if we find it in the shadow tree,
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* dispatch to there, otherwise NULL means use the built-in
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* default main tree.
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*/
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if (SCARG(uap, namelen) > CTL_MAXNAME || SCARG(uap, namelen) < 1)
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return (EINVAL);
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error = copyin(namep, &name[0], SCARG(uap, namelen) * sizeof(int));
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if (error)
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return (error);
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/*
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* wire old so that copyout() is less likely to fail?
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*/
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error = sysctl_lock(l, oldp, savelen);
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if (error)
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return (error);
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pnode = &netbsd32_sysctl_root;
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error = sysctl_locate(l, &name[0], SCARG(uap, namelen), &pnode, NULL);
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pnode = (error == 0) ? &netbsd32_sysctl_root : NULL;
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error = sysctl_dispatch(&name[0], SCARG(uap, namelen),
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oldp, &oldlen,
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newp, SCARG(uap, newlen),
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&name[0], l, pnode);
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/*
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* release the sysctl lock
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*/
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sysctl_unlock(l);
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/*
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* reset caller's oldlen, even if we got an error
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*/
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if (oldlenp) {
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netbsd32_oldlen = oldlen;
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nerror = copyout(&netbsd32_oldlen, oldlenp,
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sizeof(netbsd32_oldlen));
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if (error == 0)
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error = nerror;
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}
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/*
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* if the only problem is that we weren't given enough space,
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* that's an ENOMEM error
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*/
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if (error == 0 && oldp != NULL && savelen < oldlen)
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error = ENOMEM;
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return (error);
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}
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