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/*
* get_classdev_parent.c
*
* Utility to get a given class device as well as its parent if available
*
* Copyright (C) IBM Corp. 2003
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include "libsysfs.h"
int main(int argc, char *argv[])
{
struct sysfs_class_device *cdev = NULL, *parent = NULL;
struct sysfs_attribute *attr = NULL;
struct dlist *attrlist = NULL;
struct sysfs_device *device = NULL;
struct sysfs_driver *driver = NULL;
/* FIXME: edit this path to any valid path on your system to test */
cdev = sysfs_open_class_device_path("/sys/block/sda/sda1");
if (cdev == NULL) {
fprintf(stdout, "Class device not found\n");
return 1;
}
fprintf(stdout, "Class device \"%s\"\n", cdev->name);
attrlist = sysfs_get_classdev_attributes(cdev);
if (attrlist != NULL) {
dlist_for_each_data(attrlist, attr, struct sysfs_attribute)
fprintf(stdout, "\t%-20s : %s",
attr->name, attr->value);
}
fprintf(stdout, "\n");
device = sysfs_get_classdev_device(cdev);
if (device)
fprintf(stdout, "\tDevice : \"%s\"\n", cdev->sysdevice->bus_id);
driver = sysfs_get_classdev_driver(cdev);
if (driver)
fprintf(stdout, "\tDriver : \"%s\"\n", cdev->driver->name);
parent = sysfs_get_classdev_parent(cdev);
if (parent != NULL) {
fprintf(stdout, "Device \"%s\"'s parent is \"%s\"\n",
cdev->name, parent->name);
attrlist = sysfs_get_classdev_attributes(parent);
if (attrlist != NULL) {
dlist_for_each_data(attrlist, attr,
struct sysfs_attribute)
fprintf(stdout, "\t%-20s : %s",
attr->name, attr->value);
}
fprintf(stdout, "\n");
} else
fprintf(stdout, "No parent device found\n");
sysfs_close_class_device(cdev);
return 0;
}
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