main.c

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/*
 * Copyright (c) 2010-2011 Vojtech Horky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
 */

#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <str_error.h>
#include <bool.h>
#include <getopt.h>
#include <devman.h>
#include <devmap.h>
#include <usb/dev/hub.h>
#include <usb/hc.h>

#define NAME "lsusb"

#define MAX_USB_ADDRESS USB11_ADDRESS_MAX
#define MAX_FAILED_ATTEMPTS 10
#define MAX_PATH_LENGTH 1024

static void print_found_hc(size_t class_index, const char *path)
{
        // printf(NAME ": host controller %zu is `%s'.\n", class_index, path);
        printf("Bus %02zu: %s\n", class_index, path);
}
static void print_found_dev(usb_address_t addr, const char *path)
{
        // printf(NAME ":     device with address %d is `%s'.\n", addr, path);
        printf("  Device %02d: %s\n", addr, path);
}

static void print_hc_devices(devman_handle_t hc_handle)
{
        int rc;
        usb_hc_connection_t conn;

        usb_hc_connection_initialize(&conn, hc_handle);
        rc = usb_hc_connection_open(&conn);
        if (rc != EOK) {
                printf(NAME ": failed to connect to HC: %s.\n",
                    str_error(rc));
                return;
        }
        usb_address_t addr;
        for (addr = 1; addr < MAX_USB_ADDRESS; addr++) {
                devman_handle_t dev_handle;
                rc = usb_hc_get_handle_by_address(&conn, addr, &dev_handle);
                if (rc != EOK) {
                        continue;
                }
                char path[MAX_PATH_LENGTH];
                rc = devman_get_device_path(dev_handle, path, MAX_PATH_LENGTH);
                if (rc != EOK) {
                        continue;
                }
                print_found_dev(addr, path);
        }
        usb_hc_connection_close(&conn);
}

int main(int argc, char *argv[])
{
        size_t class_index = 0;
        size_t failed_attempts = 0;

        while (failed_attempts < MAX_FAILED_ATTEMPTS) {
                class_index++;
                devman_handle_t hc_handle = 0;
                int rc = usb_ddf_get_hc_handle_by_class(class_index, &hc_handle);
                if (rc != EOK) {
                        failed_attempts++;
                        continue;
                }
                char path[MAX_PATH_LENGTH];
                rc = devman_get_device_path(hc_handle, path, MAX_PATH_LENGTH);
                if (rc != EOK) {
                        continue;
                }
                print_found_hc(class_index, path);
                print_hc_devices(hc_handle);
        }

        return 0;
}

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