static int udev_builtin_hwdb_search(struct udev_device *dev, struct udev_device *srcdev,
const char *subsystem, const char *prefix,
const char *filter, bool test) {
struct udev_device *d;
char s[16];
bool last = false;
int r = 0;
assert(dev);
if (!srcdev)
srcdev = dev;
for (d = srcdev; d && !last; d = udev_device_get_parent(d)) {
const char *dsubsys;
const char *modalias = NULL;
dsubsys = udev_device_get_subsystem(d);
if (!dsubsys)
continue;
/* look only at devices of a specific subsystem */
if (subsystem && !streq(dsubsys, subsystem))
continue;
modalias = udev_device_get_property_value(d, "MODALIAS");
if (streq(dsubsys, "usb") && streq_ptr(udev_device_get_devtype(d), "usb_device")) {
/* if the usb_device does not have a modalias, compose one */
if (!modalias)
modalias = modalias_usb(d, s, sizeof(s));
/* avoid looking at any parent device, they are usually just a USB hub */
last = true;
}
if (!modalias)
continue;
r = udev_builtin_hwdb_lookup(dev, prefix, modalias, filter, test);
if (r > 0)
break;
}
return r;
}
static int udev_builtin_hwdb_search(struct udev_device *dev, struct udev_device *srcdev,
const char *subsystem, const char *prefix,
const char *filter, bool test) {
struct udev_device *d;
char s[16];
int n = 0;
for (d = srcdev; d; d = udev_device_get_parent(d)) {
const char *dsubsys;
const char *modalias = NULL;
dsubsys = udev_device_get_subsystem(d);
if (!dsubsys)
continue;
/* look only at devices of a specific subsystem */
if (subsystem && !streq(dsubsys, subsystem))
continue;
/* the usb_device does not have a modalias, compose one */
if (streq(dsubsys, "usb"))
modalias = modalias_usb(d, s, sizeof(s));
if (!modalias)
modalias = udev_device_get_property_value(d, "MODALIAS");
if (!modalias)
continue;
n = udev_builtin_hwdb_lookup(dev, prefix, modalias, filter, test);
if (n > 0)
break;
}
return n;
}