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https://git.busybox.net/busybox.git
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86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* lsusb implementation for busybox
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*
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* Copyright (C) 2009 Malek Degachi <malek-degachi@laposte.net>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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//config:config LSUSB
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//config: bool "lsusb (4.4 kb)"
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//config: default y
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//config: help
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//config: lsusb is a utility for displaying information about USB buses in the
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//config: system and devices connected to them.
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//config:
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//config: This version uses sysfs (/sys/bus/usb/devices) only.
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//applet:IF_LSUSB(APPLET_NOEXEC(lsusb, lsusb, BB_DIR_USR_BIN, BB_SUID_DROP, lsusb))
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//kbuild:lib-$(CONFIG_LSUSB) += lsusb.o
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//usage:#define lsusb_trivial_usage NOUSAGE_STR
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//usage:#define lsusb_full_usage ""
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#include "libbb.h"
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static int FAST_FUNC fileAction(struct recursive_state *state UNUSED_PARAM,
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const char *fileName,
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struct stat *statbuf UNUSED_PARAM)
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{
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parser_t *parser;
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char *tokens[4];
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char *busnum = NULL, *devnum = NULL;
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int product_vid = 0, product_did = 0;
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char *uevent_filename = concat_path_file(fileName, "/uevent");
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parser = config_open2(uevent_filename, fopen_for_read);
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free(uevent_filename);
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while (config_read(parser, tokens, 4, 2, "\\/=", PARSE_NORMAL)) {
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if ((parser->lineno == 1) && strcmp(tokens[0], "DEVTYPE") == 0) {
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break;
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}
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if (strcmp(tokens[0], "PRODUCT") == 0) {
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product_vid = xstrtou(tokens[1], 16);
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product_did = xstrtou(tokens[2], 16);
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continue;
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}
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if (strcmp(tokens[0], "BUSNUM") == 0) {
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busnum = xstrdup(tokens[1]);
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continue;
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}
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if (strcmp(tokens[0], "DEVNUM") == 0) {
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devnum = xstrdup(tokens[1]);
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continue;
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}
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}
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config_close(parser);
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if (busnum) {
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printf("Bus %s Device %s: ID %04x:%04x\n", busnum, devnum, product_vid, product_did);
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free(busnum);
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free(devnum);
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}
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return TRUE;
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}
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int lsusb_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int lsusb_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
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{
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/* no options, no getopt */
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recursive_action("/sys/bus/usb/devices",
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ACTION_RECURSE,
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fileAction,
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NULL, /* dirAction */
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NULL /* userData */
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);
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return EXIT_SUCCESS;
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}
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