static usb_handle *find_usb_device(const char *base, ifc_match_func callback)
{
usb_handle *usb = 0;
char devname[64];
char desc[1024];
int n, in, out, ifc;
DIR *busdir;
struct dirent *de;
int fd;
int writable;
busdir = opendir(base);
if(busdir == 0) return 0;
while((de = readdir(busdir)) && (usb == 0)) {
if(badname(de->d_name)) continue;
if(!convert_to_devfs_name(de->d_name, devname, sizeof(devname))) {
// DBG("[ scanning %s ]\n", devname);
writable = 1;
if((fd = open(devname, O_RDWR)) < 0) {
// Check if we have read-only access, so we can give a helpful
// diagnostic like "adb devices" does.
writable = 0;
if((fd = open(devname, O_RDONLY)) < 0) {
continue;
}
}
n = read(fd, desc, sizeof(desc));
if(filter_usb_device(de->d_name, desc, n, writable, callback,
&in, &out, &ifc) == 0) {
usb = calloc(1, sizeof(usb_handle));
strcpy(usb->fname, devname);
usb->ep_in = in;
usb->ep_out = out;
usb->desc = fd;
n = ioctl(fd, USBDEVFS_CLAIMINTERFACE, &ifc);
if(n != 0) {
close(fd);
free(usb);
usb = 0;
continue;
}
} else {
close(fd);
}
}
}
closedir(busdir);
return usb;
}
static int find_usb_device(const char *base, ifc_match_func callback)
{
int ret = 0;
int n;
char busname[64], devname[64];
char desc[1024];
DIR *busdir, *devdir;
struct dirent *de;
int fd;
busdir = opendir(base);
if(busdir == 0) return 0;
while((de = readdir(busdir)) && (ret == 0)) {
if(badname(de->d_name)) continue;
sprintf(busname, "%s/%s", base, de->d_name);
devdir = opendir(busname);
if(devdir == 0) continue;
DBG("[ scanning %s ]\n", busname);
while((de = readdir(devdir)) && (ret == 0)) {
if(badname(de->d_name)) continue;
sprintf(devname, "%s/%s", busname, de->d_name);
DBG("[ scanning %s ]\n", devname);
if((fd = open(devname, O_RDONLY)) < 0) {
continue;
}
n = read(fd, desc, sizeof(desc));
if(filter_usb_device(desc, n, callback)){
ret = 1;
continue;
} else {
close(fd);
}
}
closedir(devdir);
}
closedir(busdir);
return ret;
}
