blob: 7d36d6f5abd37985d4faa833dc6bee2c9e949e77
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * lsusb implementation for busybox |
4 | * |
5 | * Copyright (C) 2009 Malek Degachi <malek-degachi@laposte.net> |
6 | * |
7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
8 | */ |
9 | //config:config LSUSB |
10 | //config: bool "lsusb" |
11 | //config: default y |
12 | //config: #select PLATFORM_LINUX |
13 | //config: help |
14 | //config: lsusb is a utility for displaying information about USB buses in the |
15 | //config: system and devices connected to them. |
16 | //config: |
17 | //config: This version uses sysfs (/sys/bus/usb/devices) only. |
18 | |
19 | //applet:IF_LSUSB(APPLET(lsusb, BB_DIR_USR_BIN, BB_SUID_DROP)) |
20 | |
21 | //kbuild:lib-$(CONFIG_LSUSB) += lsusb.o |
22 | |
23 | //usage:#define lsusb_trivial_usage NOUSAGE_STR |
24 | //usage:#define lsusb_full_usage "" |
25 | |
26 | #include "libbb.h" |
27 | |
28 | static int FAST_FUNC fileAction( |
29 | const char *fileName, |
30 | struct stat *statbuf UNUSED_PARAM, |
31 | void *userData UNUSED_PARAM, |
32 | int depth UNUSED_PARAM) |
33 | { |
34 | parser_t *parser; |
35 | char *tokens[4]; |
36 | char *busnum = NULL, *devnum = NULL; |
37 | int product_vid = 0, product_did = 0; |
38 | char *uevent_filename = concat_path_file(fileName, "/uevent"); |
39 | |
40 | parser = config_open2(uevent_filename, fopen_for_read); |
41 | free(uevent_filename); |
42 | |
43 | while (config_read(parser, tokens, 4, 2, "\\/=", PARSE_NORMAL)) { |
44 | if ((parser->lineno == 1) && strcmp(tokens[0], "DEVTYPE") == 0) { |
45 | break; |
46 | } |
47 | |
48 | if (strcmp(tokens[0], "PRODUCT") == 0) { |
49 | product_vid = xstrtou(tokens[1], 16); |
50 | product_did = xstrtou(tokens[2], 16); |
51 | continue; |
52 | } |
53 | |
54 | if (strcmp(tokens[0], "BUSNUM") == 0) { |
55 | busnum = xstrdup(tokens[1]); |
56 | continue; |
57 | } |
58 | |
59 | if (strcmp(tokens[0], "DEVNUM") == 0) { |
60 | devnum = xstrdup(tokens[1]); |
61 | continue; |
62 | } |
63 | } |
64 | config_close(parser); |
65 | |
66 | if (busnum) { |
67 | printf("Bus %s Device %s: ID %04x:%04x\n", busnum, devnum, product_vid, product_did); |
68 | free(busnum); |
69 | free(devnum); |
70 | } |
71 | |
72 | return TRUE; |
73 | } |
74 | |
75 | int lsusb_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
76 | int lsusb_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM) |
77 | { |
78 | /* no options, no getopt */ |
79 | |
80 | recursive_action("/sys/bus/usb/devices", |
81 | ACTION_RECURSE, |
82 | fileAction, |
83 | NULL, /* dirAction */ |
84 | NULL, /* userData */ |
85 | 0 /* depth */); |
86 | |
87 | return EXIT_SUCCESS; |
88 | } |
89 |