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Simple tool to print the device tree and resource usage by devices. Also

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serves as an example of libdevinfo usage.
This commit is contained in:
Mike Smith 2001-04-21 00:13:25 +00:00
parent bd2bae03ed
commit ce7894ee6d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=75752
2 changed files with 222 additions and 0 deletions
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8
usr.sbin/devinfo/Makefile Normal file
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# $FreeBSD$
PROG= devinfo
LDADD= -ldevinfo
CFLAGS= -Wall
NOMAN= yes
.include <bsd.prog.mk>

214
usr.sbin/devinfo/devinfo.c Normal file
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/*-
* Copyright (c) 2000, 2001 Michael Smith
* Copyright (c) 2000 BSDi
* 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.
*
* $FreeBSD$
*/
/*
* Print information about system device configuration.
*/
#include <sys/types.h>
#include <err.h>
#include <stdio.h>
#include <unistd.h>
#include "devinfo.h"
int rflag;
struct indent_arg
{
int indent;
void *arg;
};
/*
* Print a resource.
*/
void
print_resource(struct devinfo_res *res)
{
struct devinfo_rman *rman;
int hexmode;
rman = devinfo_handle_to_rman(res->dr_rman);
hexmode = (rman->dm_size > 100) || (rman->dm_size == 0);
printf(hexmode ? "0x%lx" : "%lu", res->dr_start);
if (res->dr_size > 1)
printf(hexmode ? "-0x%lx" : "-%lu",
res->dr_start + res->dr_size - 1);
}
/*
* Print resource information if this resource matches the
* given device.
*
* If the given indent is 0, return an indicator that a matching
* resource exists.
*/
int
print_device_matching_resource(struct devinfo_res *res, void *arg)
{
struct indent_arg *ia = (struct indent_arg *)arg;
struct devinfo_dev *dev = (struct devinfo_dev *)ia->arg;
int i;
if (devinfo_handle_to_device(res->dr_device) == dev) {
/* in 'detect' mode, found a match */
if (ia->indent == 0)
return(1);
for (i = 0; i < ia->indent; i++)
printf(" ");
print_resource(res);
printf("\n");
}
return(0);
}
/*
* Print resource information for this device and resource manager.
*/
int
print_device_rman_resources(struct devinfo_rman *rman, void *arg)
{
struct indent_arg *ia = (struct indent_arg *)arg;
struct devinfo_dev *dev;
int indent, i;
indent = ia->indent;
dev = (struct devinfo_dev *)ia->arg;
/* check whether there are any resources matching this device */
ia->indent = 0;
if (devinfo_foreach_rman_resource(rman,
print_device_matching_resource, ia) != 0) {
/* there are, print header */
for (i = 0; i < indent; i++)
printf(" ");
printf("%s:\n", rman->dm_desc);
/* print resources */
ia->indent = indent + 4;
devinfo_foreach_rman_resource(rman,
print_device_matching_resource, ia);
}
ia->indent = indent;
return(0);
}
/*
* Print information about a device.
*/
int
print_device(struct devinfo_dev *dev, void *arg)
{
struct indent_arg ia;
int i, indent;
if (dev->dd_name[0] != 0) {
indent = (int)arg;
for (i = 0; i < indent; i++)
printf(" ");
printf("%s\n", dev->dd_name);
if (rflag) {
ia.indent = indent + 4;
ia.arg = dev;
devinfo_foreach_rman(print_device_rman_resources,
(void *)&ia);
}
}
return(devinfo_foreach_device_child(dev, print_device,
(void *)(indent + 2)));
}
/*
* Print information about a resource under a resource manager.
*/
int
print_rman_resource(struct devinfo_res *res, void *arg)
{
struct devinfo_dev *dev;
printf(" ");
print_resource(res);
dev = devinfo_handle_to_device(res->dr_device);
if ((dev != NULL) && (dev->dd_name[0] != 0)) {
printf(" (%s)", dev->dd_name);
} else {
printf(" ----");
}
printf("\n");
return(0);
}
/*
* Print information about a resource manager.
*/
int
print_rman(struct devinfo_rman *rman, void *arg)
{
printf("%s:\n", rman->dm_desc);
devinfo_foreach_rman_resource(rman, print_rman_resource, 0);
return(0);
}
int
main(int argc, char *argv[])
{
struct devinfo_dev *root;
int c, uflag;
uflag = 0;
while ((c = getopt(argc, argv, "ru")) != -1) {
switch(c) {
case 'r':
rflag++;
break;
case 'u':
uflag++;
break;
default:
errx(1, "usage: %s [-ru]", argv[0]);
}
}
if (devinfo_init())
err(1, "devinfo_init");
if ((root = devinfo_handle_to_device(DEVINFO_ROOT_DEVICE)) == NULL)
errx(1, "can't find root device");
/* print resource usage? */
if (uflag) {
devinfo_foreach_rman(print_rman, NULL);
} else {
/* print device hierarchy */
devinfo_foreach_device_child(root, print_device, (void *)0);
}
return(0);
}