int udev_node_update_old_links(sd_device *dev, sd_device *dev_old) {
const char *name, *devpath;
int r;
assert(dev);
assert(dev_old);
r = sd_device_get_devpath(dev, &devpath);
if (r < 0)
return log_device_debug_errno(dev, r, "Failed to get devpath: %m");
/* update possible left-over symlinks */
FOREACH_DEVICE_DEVLINK(dev_old, name) {
const char *name_current;
bool found = false;
/* check if old link name still belongs to this device */
FOREACH_DEVICE_DEVLINK(dev, name_current)
if (streq(name, name_current)) {
found = true;
break;
}
if (found)
continue;
log_device_debug(dev, "Updating old name, '%s' no longer belonging to '%s'",
name, devpath);
link_update(dev, name, false);
}
return 0;
}
static int device_monitor_handler(sd_device_monitor *monitor, sd_device *device, void *userdata) {
const char *action = NULL, *devpath = NULL, *subsystem = NULL;
MonitorNetlinkGroup group = PTR_TO_INT(userdata);
struct timespec ts;
assert(device);
assert(IN_SET(group, MONITOR_GROUP_UDEV, MONITOR_GROUP_KERNEL));
(void) sd_device_get_property_value(device, "ACTION", &action);
(void) sd_device_get_devpath(device, &devpath);
(void) sd_device_get_subsystem(device, &subsystem);
assert_se(clock_gettime(CLOCK_MONOTONIC, &ts) == 0);
printf("%-6s[%"PRI_TIME".%06"PRI_NSEC"] %-8s %s (%s)\n",
group == MONITOR_GROUP_UDEV ? "UDEV" : "KERNEL",
ts.tv_sec, (nsec_t)ts.tv_nsec/1000,
action, devpath, subsystem);
if (arg_show_property) {
const char *key, *value;
FOREACH_DEVICE_PROPERTY(device, key, value)
printf("%s=%s\n", key, value);
printf("\n");
}
return 0;
}
/**
* udev_device_get_devpath:
* @udev_device: udev device
*
* Retrieve the kernel devpath value of the udev device. The path
* does not contain the sys mount point, and starts with a '/'.
*
* Returns: the devpath of the udev device
**/
_public_ const char *udev_device_get_devpath(struct udev_device *udev_device)
{
const char *devpath;
int r;
assert_return_errno(udev_device, NULL, EINVAL);
r = sd_device_get_devpath(udev_device->device, &devpath);
if (r < 0) {
errno = -r;
return NULL;
}
return devpath;
}
