util: introduce device_for_action()

It will be used in later commits.

src/shared/udev-util.c

@@ -181,3 +181,14 @@ int device_is_renaming(sd_device *dev) {
 
         return r >= 0;
 }
+
+bool device_for_action(sd_device *dev, DeviceAction action) {
+        DeviceAction a;
+
+        assert(dev);
+
+        if (device_get_action(dev, &a) < 0)
+                return false;
+
+        return a == action;
+}

src/shared/udev-util.h

@@ -3,6 +3,7 @@
 
 #include "sd-device.h"
 
+#include "device-private.h"
 #include "time-util.h"
 
 typedef enum ResolveNameTiming {
@@ -28,3 +29,4 @@ static inline int udev_parse_config(void) {
 
 int device_wait_for_initialization(sd_device *device, const char *subsystem, sd_device **ret);
 int device_is_renaming(sd_device *dev);
+bool device_for_action(sd_device *dev, DeviceAction action);