1/* lsusb.c - list available USB devices 2 * 3 * Copyright 2013 Andre Renaud <andre@bluewatersys.com> 4 5USE_LSUSB(NEWTOY(lsusb, NULL, TOYFLAG_USR|TOYFLAG_BIN)) 6 7config LSUSB 8 bool "lsusb" 9 default y 10 help 11 usage: lsusb 12 13 List USB hosts/devices. 14*/ 15 16#include "toys.h" 17 18static int list_device(struct dirtree *new) 19{ 20 FILE *file; 21 char *name; 22 int busnum = 0, devnum = 0, pid = 0, vid = 0; 23 24 if (!new->parent) return DIRTREE_RECURSE; 25 if (new->name[0] == '.') return 0; 26 name = dirtree_path(new, 0); 27 snprintf(toybuf, sizeof(toybuf), "%s/%s", name, "/uevent"); 28 file = fopen(toybuf, "r"); 29 if (file) { 30 int count = 0; 31 32 while (fgets(toybuf, sizeof(toybuf), file)) 33 if (sscanf(toybuf, "BUSNUM=%u\n", &busnum) 34 || sscanf(toybuf, "DEVNUM=%u\n", &devnum) 35 || sscanf(toybuf, "PRODUCT=%x/%x/", &pid, &vid)) count++; 36 37 if (count == 3) 38 printf("Bus %03d Device %03d: ID %04x:%04x\n", busnum, devnum, pid, vid); 39 fclose(file); 40 } 41 free(name); 42 43 return 0; 44} 45 46void lsusb_main(void) 47{ 48 dirtree_read("/sys/bus/usb/devices/", list_device); 49} 50