Simple tool to print the device tree and resource usage by devices. Also
serves as an example of libdevinfo usage.
This commit is contained in:
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=75752
8
usr.sbin/devinfo/Makefile
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8
usr.sbin/devinfo/Makefile
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# $FreeBSD$
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PROG= devinfo
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LDADD= -ldevinfo
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CFLAGS= -Wall
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NOMAN= yes
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.include <bsd.prog.mk>
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214
usr.sbin/devinfo/devinfo.c
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214
usr.sbin/devinfo/devinfo.c
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/*-
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* Copyright (c) 2000, 2001 Michael Smith
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* Copyright (c) 2000 BSDi
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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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*
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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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* $FreeBSD$
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*/
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/*
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* Print information about system device configuration.
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*/
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#include <sys/types.h>
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#include <err.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "devinfo.h"
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int rflag;
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struct indent_arg
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{
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int indent;
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void *arg;
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};
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/*
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* Print a resource.
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*/
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void
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print_resource(struct devinfo_res *res)
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{
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struct devinfo_rman *rman;
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int hexmode;
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rman = devinfo_handle_to_rman(res->dr_rman);
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hexmode = (rman->dm_size > 100) || (rman->dm_size == 0);
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printf(hexmode ? "0x%lx" : "%lu", res->dr_start);
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if (res->dr_size > 1)
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printf(hexmode ? "-0x%lx" : "-%lu",
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res->dr_start + res->dr_size - 1);
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}
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/*
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* Print resource information if this resource matches the
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* given device.
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*
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* If the given indent is 0, return an indicator that a matching
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* resource exists.
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*/
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int
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print_device_matching_resource(struct devinfo_res *res, void *arg)
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{
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struct indent_arg *ia = (struct indent_arg *)arg;
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struct devinfo_dev *dev = (struct devinfo_dev *)ia->arg;
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int i;
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if (devinfo_handle_to_device(res->dr_device) == dev) {
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/* in 'detect' mode, found a match */
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if (ia->indent == 0)
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return(1);
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for (i = 0; i < ia->indent; i++)
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printf(" ");
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print_resource(res);
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printf("\n");
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}
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return(0);
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}
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/*
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* Print resource information for this device and resource manager.
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*/
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int
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print_device_rman_resources(struct devinfo_rman *rman, void *arg)
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{
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struct indent_arg *ia = (struct indent_arg *)arg;
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struct devinfo_dev *dev;
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int indent, i;
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indent = ia->indent;
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dev = (struct devinfo_dev *)ia->arg;
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/* check whether there are any resources matching this device */
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ia->indent = 0;
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if (devinfo_foreach_rman_resource(rman,
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print_device_matching_resource, ia) != 0) {
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/* there are, print header */
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for (i = 0; i < indent; i++)
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printf(" ");
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printf("%s:\n", rman->dm_desc);
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/* print resources */
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ia->indent = indent + 4;
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devinfo_foreach_rman_resource(rman,
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print_device_matching_resource, ia);
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}
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ia->indent = indent;
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return(0);
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}
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/*
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* Print information about a device.
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*/
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int
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print_device(struct devinfo_dev *dev, void *arg)
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{
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struct indent_arg ia;
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int i, indent;
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if (dev->dd_name[0] != 0) {
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indent = (int)arg;
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for (i = 0; i < indent; i++)
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printf(" ");
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printf("%s\n", dev->dd_name);
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if (rflag) {
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ia.indent = indent + 4;
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ia.arg = dev;
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devinfo_foreach_rman(print_device_rman_resources,
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(void *)&ia);
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}
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}
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return(devinfo_foreach_device_child(dev, print_device,
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(void *)(indent + 2)));
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}
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/*
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* Print information about a resource under a resource manager.
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*/
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int
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print_rman_resource(struct devinfo_res *res, void *arg)
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{
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struct devinfo_dev *dev;
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printf(" ");
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print_resource(res);
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dev = devinfo_handle_to_device(res->dr_device);
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if ((dev != NULL) && (dev->dd_name[0] != 0)) {
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printf(" (%s)", dev->dd_name);
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} else {
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printf(" ----");
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}
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printf("\n");
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return(0);
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}
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/*
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* Print information about a resource manager.
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*/
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int
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print_rman(struct devinfo_rman *rman, void *arg)
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{
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printf("%s:\n", rman->dm_desc);
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devinfo_foreach_rman_resource(rman, print_rman_resource, 0);
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return(0);
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}
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int
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main(int argc, char *argv[])
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{
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struct devinfo_dev *root;
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int c, uflag;
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uflag = 0;
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while ((c = getopt(argc, argv, "ru")) != -1) {
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switch(c) {
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case 'r':
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rflag++;
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break;
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case 'u':
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uflag++;
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break;
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default:
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errx(1, "usage: %s [-ru]", argv[0]);
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}
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}
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if (devinfo_init())
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err(1, "devinfo_init");
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if ((root = devinfo_handle_to_device(DEVINFO_ROOT_DEVICE)) == NULL)
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errx(1, "can't find root device");
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/* print resource usage? */
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if (uflag) {
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devinfo_foreach_rman(print_rman, NULL);
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} else {
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/* print device hierarchy */
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devinfo_foreach_device_child(root, print_device, (void *)0);
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}
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return(0);
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}
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