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/* 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.
*/
//config:config LSUSB
//config: bool "lsusb (4.2 kb)"
//config: default y
//config: help
//config: lsusb is a utility for displaying information about USB buses in the
//config: system and devices connected to them.
//config:
//config: This version uses sysfs (/sys/bus/usb/devices) only.
//applet:IF_LSUSB(APPLET_NOEXEC(lsusb, lsusb, BB_DIR_USR_BIN, BB_SUID_DROP, lsusb))
//kbuild:lib-$(CONFIG_LSUSB) += lsusb.o
//usage:#define lsusb_trivial_usage NOUSAGE_STR
//usage:#define lsusb_full_usage ""
#include "libbb.h"
static int FAST_FUNC fileAction(struct recursive_state *state UNUSED_PARAM,
const char *fileName,
struct stat *statbuf 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 */
);
return EXIT_SUCCESS;
}
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