source: MondoRescue/branches/2.2.9/mindi-busybox/util-linux/lsusb.c@ 3320

/* vi: set sw=4 ts=4: */
/*
 * lsusb implementation for busybox
 *
 * Copyright (C) 2009  Malek Degachi <malek-degachi@laposte.net>
 *
 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
 */
#include "libbb.h"

static int FAST_FUNC fileAction(
        const char *fileName,
        struct stat *statbuf UNUSED_PARAM,
        void *userData UNUSED_PARAM,
        int depth UNUSED_PARAM)
{
    parser_t *parser;
    char *tokens[4];
    char *busnum = NULL, *devnum = NULL;
    int product_vid = 0, product_did = 0;
    char *uevent_filename = concat_path_file(fileName, "/uevent");

    parser = config_open2(uevent_filename, fopen_for_read);
    free(uevent_filename);

    while (config_read(parser, tokens, 4, 2, "\\/=", PARSE_NORMAL)) {
        if ((parser->lineno == 1) && strcmp(tokens[0], "DEVTYPE") == 0) {
            break;
        }

        if (strcmp(tokens[0], "PRODUCT") == 0) {
            product_vid = xstrtou(tokens[1], 16);
            product_did = xstrtou(tokens[2], 16);
            continue;
        }

        if (strcmp(tokens[0], "BUSNUM") == 0) {
            busnum = xstrdup(tokens[1]);
            continue;
        }

        if (strcmp(tokens[0], "DEVNUM") == 0) {
            devnum = xstrdup(tokens[1]);
            continue;
        }
    }
    config_close(parser);

    if (busnum) {
        printf("Bus %s Device %s: ID %04x:%04x\n", busnum, devnum, product_vid, product_did);
        free(busnum);
        free(devnum);
    }

    return TRUE;
}

int lsusb_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int lsusb_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
{
    /* no options, no getopt */

    recursive_action("/sys/bus/usb/devices",
            ACTION_RECURSE,
            fileAction,
            NULL, /* dirAction */
            NULL, /* userData */
            0 /* depth */);

    return EXIT_SUCCESS;
}