kern_clock.c: define dk_names[][].
kern_sysctl.c: call dev_sysctl for hw.devconf mib subtree kern_devconf.c: sysctl-accessible device-configuration and -management interface
This commit is contained in:
Garrett Wollman
parent
e78014a8dc
commit
8478cabaea
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=3640
@ -36,7 +36,7 @@
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* SUCH DAMAGE.
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*
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* @(#)kern_clock.c 8.5 (Berkeley) 1/21/94
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* $Id: kern_clock.c,v 1.8 1994/09/29 00:52:06 wollman Exp $
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* $Id: kern_clock.c,v 1.9 1994/10/02 17:35:10 phk Exp $
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*/
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/* Portions of this software are covered by the following: */
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@ -88,7 +88,8 @@ long dk_wpms[DK_NDRIVE];
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long dk_xfer[DK_NDRIVE];
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int dk_busy;
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int dk_ndrive = DK_NDRIVE;
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int dk_ndrive = 0;
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char dk_names[DK_NDRIVE][DK_NAMELEN];
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long tk_cancc;
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long tk_nin;
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177
sys/kern/kern_devconf.c
Normal file
177
sys/kern/kern_devconf.c
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@ -0,0 +1,177 @@
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/*
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* Copyright (c) 1994, Garrett A. Wollman. 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $Id: sysctl.h,v 1.17 1994/10/10 00:58:34 phk Exp $
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*/
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/*
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* kern_devconf.c - manage device configuration table
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*
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* Garrett A. Wollman, October 1994.
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*/
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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/proc.h>
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#include <vm/vm.h> /* needed for sysctl.h */
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#include <sys/sysctl.h>
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#include <sys/devconf.h>
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static struct kern_devconf *dc_list = 0;
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static unsigned dc_lastnum = 0;
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int
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dev_attach(struct kern_devconf *kdc)
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{
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int s = splclock();
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kdc->kdc_next = dc_list;
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if(kdc->kdc_next)
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kdc->kdc_next->kdc_rlink = &kdc->kdc_next;
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kdc->kdc_rlink = &dc_list;
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kdc->kdc_number = ++dc_lastnum;
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dc_list = kdc;
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splx(s);
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return 0;
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}
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int
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dev_detach(struct kern_devconf *kdc)
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{
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struct kern_devconf *iter;
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int s;
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s = splclock();
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*kdc->kdc_rlink = kdc->kdc_next;
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if(kdc->kdc_next)
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kdc->kdc_next->kdc_rlink = kdc->kdc_rlink;
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splx(s);
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return 0;
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}
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/*
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* NB: the device must do a dev_detach inside its goaway routine, if it
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* succeeds.
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*/
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int
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dev_goawayall(int force)
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{
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int rv = 0;
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struct kern_devconf *kdc = dc_list;
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while(kdc) {
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if(kdc->kdc_goaway(kdc, force)) {
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rv++;
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kdc = kdc->kdc_next;
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} else {
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kdc = dc_list;
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}
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}
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return rv;
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}
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static void
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make_devconf(struct kern_devconf *kdc, struct devconf *dc)
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{
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strncpy(dc->dc_name, kdc->kdc_name, sizeof dc->dc_name);
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dc->dc_name[sizeof dc->dc_name - 1] = '\0';
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dc->dc_unit = kdc->kdc_unit;
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dc->dc_md = kdc->kdc_md;
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dc->dc_number = kdc->kdc_number;
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if(kdc->kdc_datalen)
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dc->dc_datalen = kdc->kdc_datalen(kdc);
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else
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dc->dc_datalen = 0;
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}
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int
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dev_sysctl(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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struct kern_devconf *kdc;
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struct devconf dc;
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int rv;
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size_t len;
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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;
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switch(name[0]) {
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case DEVCONF_NUMBER:
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return (sysctl_rdint(oldp, oldlenp, newp, dc_lastnum));
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default:
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for(kdc = dc_list; kdc; kdc = kdc->kdc_next) {
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if(kdc->kdc_number == name[0])
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break;
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}
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if(!kdc)
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return ENXIO;
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if(!oldp) {
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*oldlenp = sizeof(struct devconf) - 1;
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if(kdc->kdc_datalen) {
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*oldlenp += kdc->kdc_datalen(kdc);
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}
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return 0;
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}
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len = *oldlenp;
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make_devconf(kdc, &dc);
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*oldlenp = (sizeof dc) - 1 + dc.dc_datalen;
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if(len < *oldlenp) {
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return ENOMEM;
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}
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rv = copyout(&dc, oldp, (sizeof dc) - 1);
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if(rv)
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return rv;
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if(kdc->kdc_externalize)
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rv = kdc->kdc_externalize(p, kdc,
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&((struct devconf *)oldp)->dc_data,
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len - ((sizeof dc) - 1));
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if(rv)
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return rv;
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if(!newp)
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return 0;
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rv = suser(p->p_ucred, &p->p_acflag);
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if(rv)
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return rv;
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if(!kdc->kdc_internalize)
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return EOPNOTSUPP;
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rv = kdc->kdc_internalize(p, kdc,
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&((struct devconf *)newp)->dc_data,
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newlen - ((sizeof dc) - 1));
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return rv;
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}
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}
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* @(#)kern_sysctl.c 8.4 (Berkeley) 4/14/94
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* $Id: kern_sysctl.c,v 1.16 1994/10/02 17:35:19 phk Exp $
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* $Id: kern_sysctl.c,v 1.17 1994/10/06 21:06:30 davidg Exp $
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*/
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/*
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@ -319,8 +319,8 @@ hw_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
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extern char machine[], cpu_model[];
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extern int hw_float;
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/* all sysctl names at this level are terminal */
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if (namelen != 1)
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/* almost all sysctl names at this level are terminal */
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if (namelen != 1 && name[0] != HW_DEVCONF)
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return (ENOTDIR); /* overloaded */
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switch (name[0]) {
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@ -341,6 +341,9 @@ hw_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
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return (sysctl_rdint(oldp, oldlenp, newp, PAGE_SIZE));
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case HW_FLOATINGPT:
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return (sysctl_rdint(oldp, oldlenp, newp, hw_float));
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case HW_DEVCONF:
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return (dev_sysctl(name + 1, namelen - 1, oldp, oldlenp,
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newp, newlen, p));
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default:
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return (EOPNOTSUPP);
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}
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@ -36,7 +36,7 @@
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* SUCH DAMAGE.
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*
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* @(#)kern_clock.c 8.5 (Berkeley) 1/21/94
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* $Id: kern_clock.c,v 1.8 1994/09/29 00:52:06 wollman Exp $
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* $Id: kern_clock.c,v 1.9 1994/10/02 17:35:10 phk Exp $
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*/
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/* Portions of this software are covered by the following: */
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@ -88,7 +88,8 @@ long dk_wpms[DK_NDRIVE];
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long dk_xfer[DK_NDRIVE];
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int dk_busy;
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int dk_ndrive = DK_NDRIVE;
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int dk_ndrive = 0;
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char dk_names[DK_NDRIVE][DK_NAMELEN];
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long tk_cancc;
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long tk_nin;
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@ -36,7 +36,7 @@
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* SUCH DAMAGE.
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*
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* @(#)kern_clock.c 8.5 (Berkeley) 1/21/94
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* $Id: kern_clock.c,v 1.8 1994/09/29 00:52:06 wollman Exp $
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* $Id: kern_clock.c,v 1.9 1994/10/02 17:35:10 phk Exp $
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*/
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/* Portions of this software are covered by the following: */
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@ -88,7 +88,8 @@ long dk_wpms[DK_NDRIVE];
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long dk_xfer[DK_NDRIVE];
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int dk_busy;
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int dk_ndrive = DK_NDRIVE;
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int dk_ndrive = 0;
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char dk_names[DK_NDRIVE][DK_NAMELEN];
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long tk_cancc;
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long tk_nin;
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