/* 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); }