1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * lsusb implementation for busybox
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4 | *
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5 | * Copyright (C) 2009 Malek Degachi <malek-degachi@laposte.net>
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6 | *
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7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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8 | */
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9 | #include "libbb.h"
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10 |
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11 | static int FAST_FUNC fileAction(
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12 | const char *fileName,
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13 | struct stat *statbuf UNUSED_PARAM,
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14 | void *userData UNUSED_PARAM,
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15 | int depth UNUSED_PARAM)
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16 | {
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17 | parser_t *parser;
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18 | char *tokens[4];
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19 | char *busnum = NULL, *devnum = NULL;
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20 | int product_vid = 0, product_did = 0;
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21 | char *uevent_filename = concat_path_file(fileName, "/uevent");
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22 |
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23 | parser = config_open2(uevent_filename, fopen_for_read);
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24 | free(uevent_filename);
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25 |
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26 | while (config_read(parser, tokens, 4, 2, "\\/=", PARSE_NORMAL)) {
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27 | if ((parser->lineno == 1) && strcmp(tokens[0], "DEVTYPE") == 0) {
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28 | break;
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29 | }
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30 |
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31 | if (strcmp(tokens[0], "PRODUCT") == 0) {
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32 | product_vid = xstrtou(tokens[1], 16);
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33 | product_did = xstrtou(tokens[2], 16);
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34 | continue;
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35 | }
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36 |
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37 | if (strcmp(tokens[0], "BUSNUM") == 0) {
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38 | busnum = xstrdup(tokens[1]);
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39 | continue;
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40 | }
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41 |
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42 | if (strcmp(tokens[0], "DEVNUM") == 0) {
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43 | devnum = xstrdup(tokens[1]);
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44 | continue;
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45 | }
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46 | }
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47 | config_close(parser);
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48 |
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49 | if (busnum) {
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50 | printf("Bus %s Device %s: ID %04x:%04x\n", busnum, devnum, product_vid, product_did);
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51 | free(busnum);
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52 | free(devnum);
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53 | }
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54 |
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55 | return TRUE;
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56 | }
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57 |
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58 | int lsusb_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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59 | int lsusb_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
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60 | {
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61 | /* no options, no getopt */
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62 |
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63 | recursive_action("/sys/bus/usb/devices",
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64 | ACTION_RECURSE,
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65 | fileAction,
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66 | NULL, /* dirAction */
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67 | NULL, /* userData */
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68 | 0 /* depth */);
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69 |
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70 | return EXIT_SUCCESS;
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71 | }
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