libudev: introduce udev_device_properties_copy()

To copy properties from one device to another. Drop the equivalent functionality from udevd.

2 files changed, 16 insertions, 0 deletions

diff --git a/src/libudev/libudev-device.c b/src/libudev/libudev-device.c
index 242a0d89b6..2604ad7051 100644
--- a/src/libudev/libudev-device.c
+++ b/src/libudev/libudev-device.c
@@ -2030,3 +2030,18 @@ struct udev_device *udev_device_new_from_nulstr(struct udev *udev, char *nulstr,
 
         return device;
 }
+
+int udev_device_copy_properties(struct udev_device *dst, struct udev_device *src) {
+        struct udev_list_entry *entry;
+
+        for ((entry = udev_device_get_properties_list_entry(src)); entry; entry = udev_list_entry_get_next(entry)) {
+                const char *key, *value;
+
+                key = udev_list_entry_get_name(entry);
+                value = udev_list_entry_get_value(entry);
+
+                udev_device_add_property(dst, key, value);
+        }
+
+        return 0;
+}
diff --git a/src/libudev/libudev-private.h b/src/libudev/libudev-private.h
index 9153e67cc4..c0f9fbe763 100644
--- a/src/libudev/libudev-private.h
+++ b/src/libudev/libudev-private.h
@@ -39,6 +39,7 @@ int udev_get_rules_path(struct udev *udev, char **path[], usec_t *ts_usec[]);
 /* libudev-device.c */
 struct udev_device *udev_device_new_from_nulstr(struct udev *udev, char *nulstr, ssize_t buflen);
 struct udev_device *udev_device_shallow_clone(struct udev_device *old_device);
+int udev_device_copy_properties(struct udev_device *dst, struct udev_device *src);
 mode_t udev_device_get_devnode_mode(struct udev_device *udev_device);
 uid_t udev_device_get_devnode_uid(struct udev_device *udev_device);
 gid_t udev_device_get_devnode_gid(struct udev_device *udev_device);