libusb检测U盘插入

Oops, my fault, hic. I should run as root and I'll get what I need. :P

 Thanks, 

Have a nice day!

http://libusb.sourceforge.net/doc/examples-code.html

http://fedoraforum.org/forum/showthread.php?t=178455

/* testlibusb.c from LQ*/

#include <stdio.h>
#include <string.h>
#include <usb.h>


void print_endpoint(struct usb_endpoint_descriptor *endpoint)
{
printf(" bEndpointAddress: %02xh\n", endpoint->bEndpointAddress);
printf(" bmAttributes: %02xh\n", endpoint->bmAttributes);
printf(" wMaxPacketSize: %d\n", endpoint->wMaxPacketSize);
printf(" bInterval: %d\n", endpoint->bInterval);
printf(" bRefresh: %d\n", endpoint->bRefresh);
printf(" bSynchAddress: %d\n", endpoint->bSynchAddress);
}


void print_altsetting(struct usb_interface_descriptor *interface)
{
int i;

printf(" bInterfaceNumber: %d\n", interface->bInterfaceNumber);
printf(" bAlternateSetting: %d\n", interface->bAlternateSetting);
printf(" bNumEndpoints: %d\n", interface->bNumEndpoints);
printf(" bInterfaceClass: %d\n", interface->bInterfaceClass);
printf(" bInterfaceSubClass: %d\n", interface->bInterfaceSubClass);
printf(" bInterfaceProtocol: %d\n", interface->bInterfaceProtocol);
printf(" iInterface: %d\n", interface->iInterface);

for (i = 0; i < interface->bNumEndpoints; i++)
print_endpoint(&interface->endpoint[i]);
}


void print_interface(struct usb_interface *interface)
{
int i;

for (i = 0; i < interface->num_altsetting; i++)
print_altsetting(&interface->altsetting[i]);
}


void print_configuration(struct usb_config_descriptor *config)
{
int i;

printf(" wTotalLength: %d\n", config->wTotalLength);
printf(" bNumInterfaces: %d\n", config->bNumInterfaces);
printf(" bConfigurationValue: %d\n", config->bConfigurationValue);
printf(" iConfiguration: %d\n", config->iConfiguration);
printf(" bmAttributes: %02xh\n", config->bmAttributes);
printf(" MaxPower: %d\n", config->MaxPower);

for (i = 0; i < config->bNumInterfaces; i++)
print_interface(&config->interface[i]);
}


int main(void)
{
struct usb_bus *bus;
struct usb_device *dev;

usb_init();
usb_find_busses();
usb_find_devices();

printf("bus/device idVendor/idProduct\n");

for (bus = usb_busses; bus; bus = bus->next) {
for (dev = bus->devices; dev; dev = dev->next) {
int ret, i;
char string[256];
usb_dev_handle *udev;

printf("%s/%s %04X/%04X\n", bus->dirname, dev->filename,
dev->descriptor.idVendor, dev->descriptor.idProduct);

udev = usb_open(dev);
if (udev) {
if (dev->descriptor.iManufacturer) {
ret = usb_get_string_simple(udev, dev->descriptor.iManufacturer, string, sizeof(string));
if (ret > 0)
printf("- Manufacturer : %s\n", string);
else
printf("- Unable to fetch manufacturer string\n");
}

if (dev->descriptor.iProduct) {
ret = usb_get_string_simple(udev, dev->descriptor.iProduct, string, sizeof(string));
if (ret > 0)
printf("- Product : %s\n", string);
else
printf("- Unable to fetch product string\n");
}

if (dev->descriptor.iSerialNumber) {
ret = usb_get_string_simple(udev, dev->descriptor.iSerialNumber, string, sizeof(string));
if (ret > 0)
printf("- Serial Number: %s\n", string);
else
printf("- Unable to fetch serial number string\n");
}

usb_close (udev);
}

if (!dev->config) {
printf(" Couldn't retrieve descriptors\n");
continue;
}

for (i = 0; i < dev->descriptor.bNumConfigurations; i++)
print_configuration(&dev->config[i]);
}
}

return 0;
}