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/* lsusb.c - list available USB devices
*
* Copyright 2013 Andre Renaud <andre@bluewatersys.com>
USE_LSUSB(NEWTOY(lsusb, NULL, TOYFLAG_USR|TOYFLAG_BIN))
config LSUSB
bool "lsusb"
default y
help
usage: lsusb
List USB hosts/devices.
*/
#include "toys.h"
static int list_device(struct dirtree *new)
{
FILE *file;
char *name;
int busnum = 0, devnum = 0, pid = 0, vid = 0;
if (!new->parent) return DIRTREE_RECURSE;
if (new->name[0] == '.') return 0;
name = dirtree_path(new, 0);
snprintf(toybuf, sizeof(toybuf), "%s/%s", name, "/uevent");
file = fopen(toybuf, "r");
if (file) {
int count = 0;
while (fgets(toybuf, sizeof(toybuf), file))
if (sscanf(toybuf, "BUSNUM=%u\n", &busnum)
|| sscanf(toybuf, "DEVNUM=%u\n", &devnum)
|| sscanf(toybuf, "PRODUCT=%x/%x/", &pid, &vid)) count++;
if (count == 3)
printf("Bus %03d Device %03d: ID %04x:%04x\n", busnum, devnum, pid, vid);
fclose(file);
}
free(name);
return 0;
}
void lsusb_main(void)
{
dirtree_read("/sys/bus/usb/devices/", list_device);
}
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