mirror of git://git.suckless.org/ubase
61 lines
1.1 KiB
C
61 lines
1.1 KiB
C
/* See LICENSE file for copyright and license details. */
|
|
#include <limits.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "text.h"
|
|
#include "util.h"
|
|
|
|
static void lsusb(const char *file);
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
eprintf("usage: %s\n", argv0);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
ARGBEGIN {
|
|
default:
|
|
usage();
|
|
} ARGEND;
|
|
|
|
recurse("/sys/bus/usb/devices", lsusb);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
lsusb(const char *file)
|
|
{
|
|
FILE *fp;
|
|
char path[PATH_MAX];
|
|
char *buf = NULL;
|
|
size_t size = 0;
|
|
unsigned int i = 0, busnum = 0, devnum = 0, pid = 0, vid = 0;
|
|
|
|
if (strlcpy(path, file, sizeof(path)) >= sizeof(path))
|
|
eprintf("path too long\n");
|
|
if (strlcat(path, "/uevent", sizeof(path)) >= sizeof(path))
|
|
eprintf("path too long\n");
|
|
|
|
if (!(fp = fopen(path, "r")))
|
|
return;
|
|
while (agetline(&buf, &size, fp) != -1) {
|
|
if (sscanf(buf, "BUSNUM=%u\n", &busnum) ||
|
|
sscanf(buf, "DEVNUM=%u\n", &devnum) ||
|
|
sscanf(buf, "PRODUCT=%x/%x/", &pid, &vid))
|
|
i++;
|
|
if (i == 3) {
|
|
printf("Bus %03d Device %03d: ID %04x:%04x\n", busnum, devnum,
|
|
pid, vid);
|
|
break;
|
|
}
|
|
}
|
|
if (ferror(fp))
|
|
eprintf("%s: read error:", path);
|
|
free(buf);
|
|
fclose(fp);
|
|
}
|