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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 n
help
usage: lsusb
*/
#include "toys.h"
static int list_device(struct dirtree *new)
{
FILE *file;
char *name;
int busnum = 0;
int devnum = 0;
int pid = 0;
int 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)
return 0;
if (!fgets(toybuf, sizeof(toybuf), file) || !strncmp(toybuf, "DEVTYPE=", 8)) {
fclose(file);
return 0;
}
while (fgets(toybuf, sizeof(toybuf), file)) {
if (!strncmp(toybuf, "BUSNUM=", 7))
busnum = atoi(&toybuf[7]);
if (!strncmp(toybuf, "DEVNUM=", 7))
devnum = atoi(&toybuf[7]);
if (!strncmp(toybuf, "PRODUCT=", 8)) {
char *pos = strchr(toybuf, '/');
pid = xstrtoul(&toybuf[8], NULL, 16);
if (pos)
vid = xstrtoul(pos + 1, NULL, 16);
}
}
fclose(file);
printf("Bus %03d Device %03d: ID %04x:%04x\n", busnum, devnum, pid, vid);
return 0;
}
void lsusb_main(void)
{
dirtree_read("/sys/bus/usb/devices/", list_device);
return;
}
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