diff options
Diffstat (limited to 'sys/kern/kern_devconf.c')
-rw-r--r-- | sys/kern/kern_devconf.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/sys/kern/kern_devconf.c b/sys/kern/kern_devconf.c index 4bc6379..e69de29 100644 --- a/sys/kern/kern_devconf.c +++ b/sys/kern/kern_devconf.c @@ -1,181 +0,0 @@ -/* - * Copyright (c) 1994, Garrett A. Wollman. 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. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. - * - * $Id: kern_devconf.c,v 1.15 1996/06/12 15:10:27 joerg Exp $ - */ - -/* - * kern_devconf.c - manage device configuration table - * - * Garrett A. Wollman, October 1994. - */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/kernel.h> -#include <sys/proc.h> -#include <sys/sysctl.h> -#include <sys/devconf.h> - -struct kern_devconf *dc_list = 0; -static unsigned dc_lastnum = 0; - -int -dev_attach(struct kern_devconf *kdc) -{ - int s = splclock(); - kdc->kdc_next = dc_list; - if(kdc->kdc_next) - kdc->kdc_next->kdc_rlink = &kdc->kdc_next; - kdc->kdc_rlink = &dc_list; - kdc->kdc_number = ++dc_lastnum; - dc_list = kdc; - splx(s); - return 0; -} - -int -dev_detach(struct kern_devconf *kdc) -{ - int s; - - s = splclock(); - *kdc->kdc_rlink = kdc->kdc_next; - if(kdc->kdc_next) - kdc->kdc_next->kdc_rlink = kdc->kdc_rlink; - splx(s); - - return 0; -} - -/* - * NB: the device must do a dev_detach inside its shutdown routine, if it - * succeeds. If no routine is specified, we assume no special treatment is - * required. - */ -int -dev_shutdownall(int force) -{ - int rv = 0; - struct kern_devconf *kdc = dc_list; - - while(kdc) { - if(!kdc->kdc_shutdown) { - dev_detach(kdc); - kdc = dc_list; - continue; - } - - if(kdc->kdc_shutdown(kdc, force)) { - rv++; - kdc = kdc->kdc_next; - } else { - kdc = dc_list; - } - } - return rv; -} - -static void -make_devconf(struct kern_devconf *kdc, struct devconf *dc) -{ - strncpy(dc->dc_name, kdc->kdc_name, sizeof dc->dc_name); - dc->dc_name[(sizeof dc->dc_name) - 1] = '\0'; - dc->dc_unit = kdc->kdc_unit; - dc->dc_number = kdc->kdc_number; - - if(kdc->kdc_parent) { - strncpy(dc->dc_pname, kdc->kdc_parent->kdc_name, sizeof dc->dc_pname); - dc->dc_pname[(sizeof dc->dc_pname) - 1] = '\0'; - dc->dc_punit = kdc->kdc_parent->kdc_unit; - dc->dc_pnumber = kdc->kdc_parent->kdc_number; - } else { - bzero(dc->dc_pname, sizeof dc->dc_pname); - dc->dc_punit = -1; - dc->dc_pnumber = -1; - } - - MACHDEP_COPYDEV(dc, kdc); - dc->dc_state = kdc->kdc_state; - dc->dc_class = kdc->kdc_class; - dc->dc_datalen = kdc->kdc_datalen; - - strncpy(dc->dc_descr, kdc->kdc_description, sizeof dc->dc_descr); - dc->dc_descr[(sizeof dc->dc_descr) - 1] = '\0'; -} - -static int -sysctl_hw_devconfig SYSCTL_HANDLER_ARGS -{ - int *name = (int *) arg1; - u_int namelen = arg2; - struct kern_devconf *kdc; - struct devconf dc; - int rv; - - /* all sysctl names at this level are terminal */ - if (namelen != 1) - return ENOTDIR; - - if (name[0] == DEVCONF_NUMBER) - return sysctl_handle_int(oidp, 0, dc_lastnum, req); - - for(kdc = dc_list; kdc; kdc = kdc->kdc_next) { - if(kdc->kdc_number == name[0]) - break; - } - - if(!kdc) - return ENXIO; - - make_devconf(kdc, &dc); - - /* - * Let the device specific externalization routines - * handle the variable length data at the end of the - * dc. Since the compiler may optimize alignment and - * perform padding, we must do the subtraction to - * determine the proper length. (dc_datalen includes the - * externalized data so it can't be used) - */ - rv = SYSCTL_OUT(req, &dc, (char *)&dc.dc_data - (char *)&dc); - if(rv) - return rv; - - if(kdc->kdc_externalize) - rv = kdc->kdc_externalize(kdc, req); - if(rv) - return rv; - - if(!req->newptr) - return 0; - - if(!kdc->kdc_internalize) - return EOPNOTSUPP; - - rv = kdc->kdc_internalize(kdc, req); - return rv; -} - -SYSCTL_NODE(_hw, HW_DEVCONF, devconfig, CTLFLAG_RW, sysctl_hw_devconfig,""); |