diff --git a/src/libudev/libudev-device-internal.h b/src/libudev/libudev-device-internal.h
index 73db709e93..8a6e5a48f6 100644
--- a/src/libudev/libudev-device-internal.h
+++ b/src/libudev/libudev-device-internal.h
@@ -4,7 +4,7 @@
 #include "libudev.h"
 #include "sd-device.h"
 
-#include "libudev-private.h"
+#include "libudev-list-internal.h"
 
 /**
  * udev_device:
diff --git a/src/libudev/libudev-device-private.c b/src/libudev/libudev-device-private.c
deleted file mode 100644
index 70b00c1498..0000000000
--- a/src/libudev/libudev-device-private.c
+++ /dev/null
@@ -1,375 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1+ */
-
-#include "libudev.h"
-
-#include "device-private.h"
-#include "libudev-device-internal.h"
-#include "libudev-private.h"
-
-int udev_device_tag_index(struct udev_device *udev_device, struct udev_device *udev_device_old, bool add) {
-        sd_device *device_old = NULL;
-        int r;
-
-        assert(udev_device);
-
-        if (udev_device_old)
-                device_old = udev_device_old->device;
-
-        r = device_tag_index(udev_device->device, device_old, add);
-        if (r < 0)
-                return r;
-
-        return 0;
-}
-
-int udev_device_update_db(struct udev_device *udev_device) {
-        int r;
-
-        assert(udev_device);
-
-        r = device_update_db(udev_device->device);
-        if (r < 0)
-                return r;
-
-        return 0;
-}
-
-int udev_device_delete_db(struct udev_device *udev_device) {
-        int r;
-
-        assert(udev_device);
-
-        r = device_delete_db(udev_device->device);
-        if (r < 0)
-                return r;
-
-        return 0;
-}
-
-int udev_device_get_ifindex(struct udev_device *udev_device) {
-        int r, ifindex;
-
-        assert(udev_device);
-
-        r = sd_device_get_ifindex(udev_device->device, &ifindex);
-        if (r == -ENOENT)
-                return 0;
-        if (r < 0)
-                return r;
-
-        return ifindex;
-}
-
-const char *udev_device_get_devpath_old(struct udev_device *udev_device) {
-        const char *devpath_old = NULL;
-        int r;
-
-        assert(udev_device);
-
-        r = sd_device_get_property_value(udev_device->device, "DEVPATH_OLD", &devpath_old);
-        if (r < 0 && r != -ENOENT) {
-                errno = -r;
-                return NULL;
-        }
-
-        return devpath_old;
-}
-
-mode_t udev_device_get_devnode_mode(struct udev_device *udev_device) {
-        mode_t mode;
-        int r;
-
-        assert(udev_device);
-
-        r = device_get_devnode_mode(udev_device->device, &mode);
-        if (r < 0) {
-                errno = -r;
-                return 0;
-        }
-
-        return mode;
-}
-
-uid_t udev_device_get_devnode_uid(struct udev_device *udev_device) {
-        uid_t uid;
-        int r;
-
-        assert(udev_device);
-
-        r = device_get_devnode_uid(udev_device->device, &uid);
-        if (r < 0) {
-                errno = -r;
-                return 0;
-        }
-
-        return uid;
-}
-
-gid_t udev_device_get_devnode_gid(struct udev_device *udev_device) {
-        gid_t gid;
-        int r;
-
-        assert(udev_device);
-
-        r = device_get_devnode_gid(udev_device->device, &gid);
-        if (r < 0) {
-                errno = -r;
-                return 0;
-        }
-
-        return gid;
-}
-
-void udev_device_ensure_usec_initialized(struct udev_device *udev_device, struct udev_device *udev_device_old) {
-        assert(udev_device);
-
-        device_ensure_usec_initialized(udev_device->device,
-                                       udev_device_old ? udev_device_old->device : NULL);
-}
-
-char **udev_device_get_properties_envp(struct udev_device *udev_device) {
-        char **envp;
-        int r;
-
-        assert(udev_device);
-
-        r = device_get_properties_strv(udev_device->device, &envp);
-        if (r < 0) {
-                errno = -r;
-                return NULL;
-        }
-
-        return envp;
-}
-
-ssize_t udev_device_get_properties_monitor_buf(struct udev_device *udev_device, const char **buf) {
-        const char *nulstr;
-        size_t len;
-        int r;
-
-        assert(udev_device);
-        assert(buf);
-
-        r = device_get_properties_nulstr(udev_device->device, (const uint8_t **)&nulstr, &len);
-        if (r < 0)
-                return r;
-
-        *buf = nulstr;
-
-        return len;
-}
-
-int udev_device_get_devlink_priority(struct udev_device *udev_device) {
-        int priority, r;
-
-        assert(udev_device);
-
-        r = device_get_devlink_priority(udev_device->device, &priority);
-        if (r < 0)
-                return r;
-
-        return priority;
-}
-
-int udev_device_get_watch_handle(struct udev_device *udev_device) {
-        int handle, r;
-
-        assert(udev_device);
-
-        r = device_get_watch_handle(udev_device->device, &handle);
-        if (r < 0)
-                return r;
-
-        return handle;
-}
-
-void udev_device_set_is_initialized(struct udev_device *udev_device) {
-        assert(udev_device);
-
-        device_set_is_initialized(udev_device->device);
-}
-
-int udev_device_rename(struct udev_device *udev_device, const char *name) {
-        int r;
-
-        assert(udev_device);
-
-        r = device_rename(udev_device->device, name);
-        if (r < 0)
-                return r;
-
-        return 0;
-}
-
-struct udev_device *udev_device_shallow_clone(struct udev_device *old_device) {
-        _cleanup_(sd_device_unrefp) sd_device *device = NULL;
-        int r;
-
-        assert(old_device);
-
-        r = device_shallow_clone(old_device->device, &device);
-        if (r < 0) {
-                errno = -r;
-                return NULL;
-        }
-
-        return udev_device_new(old_device->udev, device);
-}
-
-struct udev_device *udev_device_clone_with_db(struct udev_device *udev_device_old) {
-        _cleanup_(sd_device_unrefp) sd_device *device = NULL;
-        int r;
-
-        assert(udev_device_old);
-
-        r = device_clone_with_db(udev_device_old->device, &device);
-        if (r < 0) {
-                errno = -r;
-                return NULL;
-        }
-
-        return udev_device_new(udev_device_old->udev, device);
-}
-
-struct udev_device *udev_device_new_from_nulstr(struct udev *udev, char *nulstr, ssize_t buflen) {
-        _cleanup_(sd_device_unrefp) sd_device *device = NULL;
-        int r;
-
-        r = device_new_from_nulstr(&device, (uint8_t*)nulstr, buflen);
-        if (r < 0) {
-                errno = -r;
-                return NULL;
-        }
-
-        return udev_device_new(udev, device);
-}
-
-struct udev_device *udev_device_new_from_synthetic_event(struct udev *udev, const char *syspath, const char *action) {
-        _cleanup_(sd_device_unrefp) sd_device *device = NULL;
-        int r;
-
-        r = device_new_from_synthetic_event(&device, syspath, action);
-        if (r < 0) {
-                errno = -r;
-                return NULL;
-        }
-
-        return udev_device_new(udev, device);
-}
-
-int udev_device_copy_properties(struct udev_device *udev_device_dst, struct udev_device *udev_device_src) {
-        int r;
-
-        assert(udev_device_dst);
-        assert(udev_device_src);
-
-        r = device_copy_properties(udev_device_dst->device, udev_device_src->device);
-        if (r < 0)
-                return r;
-
-        return 0;
-}
-
-const char *udev_device_get_id_filename(struct udev_device *udev_device) {
-        const char *filename;
-        int r;
-
-        assert(udev_device);
-
-        r = device_get_id_filename(udev_device->device, &filename);
-        if (r < 0) {
-                errno = -r;
-                return NULL;
-        }
-
-        return filename;
-}
-
-int udev_device_set_watch_handle(struct udev_device *udev_device, int handle) {
-
-        assert(udev_device);
-
-        device_set_watch_handle(udev_device->device, handle);
-
-        return 0;
-}
-
-void udev_device_set_db_persist(struct udev_device *udev_device) {
-        assert(udev_device);
-
-        device_set_db_persist(udev_device->device);
-}
-
-int udev_device_set_devlink_priority(struct udev_device *udev_device, int priority) {
-        assert(udev_device);
-
-        device_set_devlink_priority(udev_device->device, priority);
-
-        return 0;
-}
-
-int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink) {
-        int r;
-
-        assert(udev_device);
-
-        r = device_add_devlink(udev_device->device, devlink);
-        if (r < 0)
-                return r;
-
-        return 0;
-}
-
-int udev_device_add_property(struct udev_device *udev_device, const char *property, const char *value) {
-        int r;
-
-        assert(udev_device);
-
-        r = device_add_property(udev_device->device, property, value);
-        if (r < 0)
-                return r;
-
-        return 0;
-}
-
-int udev_device_add_tag(struct udev_device *udev_device, const char *tag) {
-        int r;
-
-        assert(udev_device);
-
-        r = device_add_tag(udev_device->device, tag);
-        if (r < 0)
-                return r;
-
-        return 0;
-}
-
-void udev_device_remove_tag(struct udev_device *udev_device, const char *tag) {
-        assert(udev_device);
-
-        device_remove_tag(udev_device->device, tag);
-}
-
-void udev_device_cleanup_tags_list(struct udev_device *udev_device) {
-        assert(udev_device);
-
-        device_cleanup_tags(udev_device->device);
-}
-
-void udev_device_cleanup_devlinks_list(struct udev_device *udev_device) {
-        assert(udev_device);
-
-        device_cleanup_devlinks(udev_device->device);
-}
-
-void udev_device_set_info_loaded(struct udev_device *udev_device) {
-        assert(udev_device);
-
-        device_seal(udev_device->device);
-}
-
-void udev_device_read_db(struct udev_device *udev_device) {
-        assert(udev_device);
-
-        device_read_db_force(udev_device->device);
-}
diff --git a/src/libudev/libudev-device.c b/src/libudev/libudev-device.c
index b6ccef7d8e..37828b2f09 100644
--- a/src/libudev/libudev-device.c
+++ b/src/libudev/libudev-device.c
@@ -23,8 +23,8 @@
 #include "device-private.h"
 #include "device-util.h"
 #include "libudev-device-internal.h"
-#include "libudev-private.h"
 #include "parse-util.h"
+#include "time-util.h"
 
 /**
  * SECTION:libudev-device
diff --git a/src/libudev/libudev-hwdb.c b/src/libudev/libudev-hwdb.c
index efb76a3f02..2dd0a8b484 100644
--- a/src/libudev/libudev-hwdb.c
+++ b/src/libudev/libudev-hwdb.c
@@ -1,10 +1,12 @@
 /* SPDX-License-Identifier: LGPL-2.1+ */
 
+#include <errno.h>
+
 #include "sd-hwdb.h"
 
 #include "alloc-util.h"
 #include "hwdb-util.h"
-#include "libudev-private.h"
+#include "libudev-list-internal.h"
 
 /**
  * SECTION:libudev-hwdb
@@ -110,7 +112,7 @@ _public_ struct udev_list_entry *udev_hwdb_get_properties_list_entry(struct udev
         udev_list_cleanup(&hwdb->properties_list);
 
         SD_HWDB_FOREACH_PROPERTY(hwdb->hwdb, modalias, key, value) {
-                if (udev_list_entry_add(&hwdb->properties_list, key, value) == NULL) {
+                if (!udev_list_entry_add(&hwdb->properties_list, key, value)) {
                         errno = ENOMEM;
                         return NULL;
                 }
diff --git a/src/libudev/libudev-list-internal.h b/src/libudev/libudev-list-internal.h
new file mode 100644
index 0000000000..1f75c37cb2
--- /dev/null
+++ b/src/libudev/libudev-list-internal.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#pragma once
+
+#include "libudev.h"
+
+struct udev_list_node {
+        struct udev_list_node *next, *prev;
+};
+
+struct udev_list {
+        struct udev *udev;
+        struct udev_list_node node;
+        struct udev_list_entry **entries;
+        unsigned entries_cur;
+        unsigned entries_max;
+        bool unique;
+};
+
+void udev_list_init(struct udev *udev, struct udev_list *list, bool unique);
+void udev_list_cleanup(struct udev_list *list);
+struct udev_list_entry *udev_list_get_entry(struct udev_list *list);
+struct udev_list_entry *udev_list_entry_add(struct udev_list *list, const char *name, const char *value);
+int udev_list_entry_get_num(struct udev_list_entry *list_entry);
+void udev_list_entry_set_num(struct udev_list_entry *list_entry, int num);
diff --git a/src/libudev/libudev-list.c b/src/libudev/libudev-list.c
index 03dcd43372..a5d52272cc 100644
--- a/src/libudev/libudev-list.c
+++ b/src/libudev/libudev-list.c
@@ -6,7 +6,8 @@
 #include <string.h>
 
 #include "alloc-util.h"
-#include "libudev-private.h"
+#include "libudev-list-internal.h"
+#include "util.h"
 
 /**
  * SECTION:libudev-list
@@ -30,34 +31,25 @@ struct udev_list_entry {
 };
 
 /* the list's head points to itself if empty */
-void udev_list_node_init(struct udev_list_node *list)
-{
+static void udev_list_node_init(struct udev_list_node *list) {
         list->next = list;
         list->prev = list;
 }
 
-int udev_list_node_is_empty(struct udev_list_node *list)
-{
+static int udev_list_node_is_empty(struct udev_list_node *list) {
         return list->next == list;
 }
 
 static void udev_list_node_insert_between(struct udev_list_node *new,
                                           struct udev_list_node *prev,
-                                          struct udev_list_node *next)
-{
+                                          struct udev_list_node *next) {
         next->prev = new;
         new->next = next;
         new->prev = prev;
         prev->next = new;
 }
 
-void udev_list_node_append(struct udev_list_node *new, struct udev_list_node *list)
-{
-        udev_list_node_insert_between(new, list->prev, list);
-}
-
-void udev_list_node_remove(struct udev_list_node *entry)
-{
+static void udev_list_node_remove(struct udev_list_node *entry) {
         struct udev_list_node *prev = entry->prev;
         struct udev_list_node *next = entry->next;
 
@@ -69,13 +61,11 @@ void udev_list_node_remove(struct udev_list_node *entry)
 }
 
 /* return list entry which embeds this node */
-static inline struct udev_list_entry *list_node_to_entry(struct udev_list_node *node)
-{
+static inline struct udev_list_entry *list_node_to_entry(struct udev_list_node *node) {
         return container_of(node, struct udev_list_entry, node);
 }
 
-void udev_list_init(struct udev *udev, struct udev_list *list, bool unique)
-{
+void udev_list_init(struct udev *udev, struct udev_list *list, bool unique) {
         memzero(list, sizeof(struct udev_list));
         list->udev = udev;
         list->unique = unique;
@@ -83,23 +73,20 @@ void udev_list_init(struct udev *udev, struct udev_list *list, bool unique)
 }
 
 /* insert entry into a list as the last element  */
-static void udev_list_entry_append(struct udev_list_entry *new, struct udev_list *list)
-{
+static void udev_list_entry_append(struct udev_list_entry *new, struct udev_list *list) {
         /* inserting before the list head make the node the last node in the list */
         udev_list_node_insert_between(&new->node, list->node.prev, &list->node);
         new->list = list;
 }
 
 /* insert entry into a list, before a given existing entry */
-static void udev_list_entry_insert_before(struct udev_list_entry *new, struct udev_list_entry *entry)
-{
+static void udev_list_entry_insert_before(struct udev_list_entry *new, struct udev_list_entry *entry) {
         udev_list_node_insert_between(&new->node, entry->node.prev, &entry->node);
         new->list = entry->list;
 }
 
 /* binary search in sorted array */
-static int list_search(struct udev_list *list, const char *name)
-{
+static int list_search(struct udev_list *list, const char *name) {
         unsigned first, last;
 
         first = 0;
@@ -200,9 +187,8 @@ struct udev_list_entry *udev_list_entry_add(struct udev_list *list, const char *
         return entry;
 }
 
-void udev_list_entry_delete(struct udev_list_entry *entry)
-{
-        if (entry->list->entries != NULL) {
+static void udev_list_entry_delete(struct udev_list_entry *entry) {
+        if (entry->list->entries) {
                 int i;
                 struct udev_list *list = entry->list;
 
@@ -221,8 +207,12 @@ void udev_list_entry_delete(struct udev_list_entry *entry)
         free(entry);
 }
 
-void udev_list_cleanup(struct udev_list *list)
-{
+#define udev_list_entry_foreach_safe(entry, tmp, first) \
+        for (entry = first, tmp = udev_list_entry_get_next(entry); \
+             entry; \
+             entry = tmp, tmp = udev_list_entry_get_next(tmp))
+
+void udev_list_cleanup(struct udev_list *list) {
         struct udev_list_entry *entry_loop;
         struct udev_list_entry *entry_tmp;
 
@@ -233,8 +223,7 @@ void udev_list_cleanup(struct udev_list *list)
                 udev_list_entry_delete(entry_loop);
 }
 
-struct udev_list_entry *udev_list_get_entry(struct udev_list *list)
-{
+struct udev_list_entry *udev_list_get_entry(struct udev_list *list) {
         if (udev_list_node_is_empty(&list->node))
                 return NULL;
         return list_node_to_entry(list->node.next);
@@ -248,11 +237,10 @@ struct udev_list_entry *udev_list_get_entry(struct udev_list *list)
  *
  * Returns: udev_list_entry, #NULL if no more entries are available.
  */
-_public_ struct udev_list_entry *udev_list_entry_get_next(struct udev_list_entry *list_entry)
-{
+_public_ struct udev_list_entry *udev_list_entry_get_next(struct udev_list_entry *list_entry) {
         struct udev_list_node *next;
 
-        if (list_entry == NULL)
+        if (!list_entry)
                 return NULL;
         next = list_entry->node.next;
         /* empty list or no more entries */
@@ -270,11 +258,10 @@ _public_ struct udev_list_entry *udev_list_entry_get_next(struct udev_list_entry
  *
  * Returns: udev_list_entry, #NULL if no matching entry is found.
  */
-_public_ struct udev_list_entry *udev_list_entry_get_by_name(struct udev_list_entry *list_entry, const char *name)
-{
+_public_ struct udev_list_entry *udev_list_entry_get_by_name(struct udev_list_entry *list_entry, const char *name) {
         int i;
 
-        if (list_entry == NULL)
+        if (!list_entry)
                 return NULL;
 
         if (!list_entry->list->unique)
@@ -294,9 +281,8 @@ _public_ struct udev_list_entry *udev_list_entry_get_by_name(struct udev_list_en
  *
  * Returns: the name string of this entry.
  */
-_public_ const char *udev_list_entry_get_name(struct udev_list_entry *list_entry)
-{
-        if (list_entry == NULL)
+_public_ const char *udev_list_entry_get_name(struct udev_list_entry *list_entry) {
+        if (!list_entry)
                 return NULL;
         return list_entry->name;
 }
@@ -309,23 +295,20 @@ _public_ const char *udev_list_entry_get_name(struct udev_list_entry *list_entry
  *
  * Returns: the value string of this entry.
  */
-_public_ const char *udev_list_entry_get_value(struct udev_list_entry *list_entry)
-{
-        if (list_entry == NULL)
+_public_ const char *udev_list_entry_get_value(struct udev_list_entry *list_entry) {
+        if (!list_entry)
                 return NULL;
         return list_entry->value;
 }
 
-int udev_list_entry_get_num(struct udev_list_entry *list_entry)
-{
-        if (list_entry == NULL)
+int udev_list_entry_get_num(struct udev_list_entry *list_entry) {
+        if (!list_entry)
                 return -EINVAL;
         return list_entry->num;
 }
 
-void udev_list_entry_set_num(struct udev_list_entry *list_entry, int num)
-{
-        if (list_entry == NULL)
+void udev_list_entry_set_num(struct udev_list_entry *list_entry, int num) {
+        if (!list_entry)
                 return;
         list_entry->num = num;
 }
diff --git a/src/libudev/libudev-monitor.c b/src/libudev/libudev-monitor.c
index 5be4d40752..364ec09617 100644
--- a/src/libudev/libudev-monitor.c
+++ b/src/libudev/libudev-monitor.c
@@ -10,7 +10,6 @@
 #include "device-private.h"
 #include "device-util.h"
 #include "libudev-device-internal.h"
-#include "libudev-private.h"
 #include "string-util.h"
 
 /**
@@ -41,39 +40,6 @@ static MonitorNetlinkGroup monitor_netlink_group_from_string(const char *name) {
         return _MONITOR_NETLINK_GROUP_INVALID;
 }
 
-struct udev_monitor *udev_monitor_new_from_netlink_fd(struct udev *udev, const char *name, int fd) {
-        _cleanup_(sd_device_monitor_unrefp) sd_device_monitor *m = NULL;
-        _cleanup_(udev_monitor_unrefp) struct udev_monitor *udev_monitor = NULL;
-        MonitorNetlinkGroup g;
-        int r;
-
-        g = monitor_netlink_group_from_string(name);
-        if (g < 0) {
-                errno = EINVAL;
-                return NULL;
-        }
-
-        r = device_monitor_new_full(&m, g, fd);
-        if (r < 0) {
-                errno = -r;
-                return NULL;
-        }
-
-        udev_monitor = new(struct udev_monitor, 1);
-        if (!udev_monitor) {
-                errno = ENOMEM;
-                return NULL;
-        }
-
-        *udev_monitor = (struct udev_monitor) {
-                .udev = udev,
-                .n_ref = 1,
-                .monitor = TAKE_PTR(m),
-        };
-
-        return TAKE_PTR(udev_monitor);
-}
-
 /**
  * udev_monitor_new_from_netlink:
  * @udev: udev library context
@@ -97,7 +63,36 @@ struct udev_monitor *udev_monitor_new_from_netlink_fd(struct udev *udev, const c
  * Returns: a new udev monitor, or #NULL, in case of an error
  **/
 _public_ struct udev_monitor *udev_monitor_new_from_netlink(struct udev *udev, const char *name) {
-        return udev_monitor_new_from_netlink_fd(udev, name, -1);
+        _cleanup_(sd_device_monitor_unrefp) sd_device_monitor *m = NULL;
+        struct udev_monitor *udev_monitor;
+        MonitorNetlinkGroup g;
+        int r;
+
+        g = monitor_netlink_group_from_string(name);
+        if (g < 0) {
+                errno = EINVAL;
+                return NULL;
+        }
+
+        r = device_monitor_new_full(&m, g, -1);
+        if (r < 0) {
+                errno = -r;
+                return NULL;
+        }
+
+        udev_monitor = new(struct udev_monitor, 1);
+        if (!udev_monitor) {
+                errno = ENOMEM;
+                return NULL;
+        }
+
+        *udev_monitor = (struct udev_monitor) {
+                .udev = udev,
+                .n_ref = 1,
+                .monitor = TAKE_PTR(m),
+        };
+
+        return udev_monitor;
 }
 
 /**
@@ -115,13 +110,6 @@ _public_ int udev_monitor_filter_update(struct udev_monitor *udev_monitor) {
         return sd_device_monitor_filter_update(udev_monitor->monitor);
 }
 
-int udev_monitor_allow_unicast_sender(struct udev_monitor *udev_monitor, struct udev_monitor *sender) {
-        assert_return(udev_monitor, -EINVAL);
-        assert_return(sender, -EINVAL);
-
-        return device_monitor_allow_unicast_sender(udev_monitor->monitor, sender->monitor);
-}
-
 /**
  * udev_monitor_enable_receiving:
  * @udev_monitor: the monitor which should receive events
@@ -152,12 +140,6 @@ _public_ int udev_monitor_set_receive_buffer_size(struct udev_monitor *udev_moni
         return sd_device_monitor_set_receive_buffer_size(udev_monitor->monitor, (size_t) size);
 }
 
-int udev_monitor_disconnect(struct udev_monitor *udev_monitor) {
-        assert(udev_monitor);
-
-        return device_monitor_disconnect(udev_monitor->monitor);
-}
-
 static struct udev_monitor *udev_monitor_free(struct udev_monitor *udev_monitor) {
         assert(udev_monitor);
 
@@ -214,7 +196,7 @@ _public_ int udev_monitor_get_fd(struct udev_monitor *udev_monitor) {
         return device_monitor_get_fd(udev_monitor->monitor);
 }
 
-int udev_monitor_receive_sd_device(struct udev_monitor *udev_monitor, sd_device **ret) {
+static int udev_monitor_receive_sd_device(struct udev_monitor *udev_monitor, sd_device **ret) {
         struct pollfd pfd;
         int r;
 
@@ -283,18 +265,6 @@ _public_ struct udev_device *udev_monitor_receive_device(struct udev_monitor *ud
         return udev_device_new(udev_monitor->udev, device);
 }
 
-int udev_monitor_send_device(
-                struct udev_monitor *udev_monitor,
-                struct udev_monitor *destination,
-                struct udev_device *udev_device) {
-        assert(udev_monitor);
-        assert(udev_device);
-
-        return device_monitor_send_device(udev_monitor->monitor,
-                                          destination ? destination->monitor : NULL,
-                                          udev_device->device);
-}
-
 /**
  * udev_monitor_filter_add_match_subsystem_devtype:
  * @udev_monitor: the monitor
diff --git a/src/libudev/libudev-private.h b/src/libudev/libudev-private.h
deleted file mode 100644
index fdf87acf9e..0000000000
--- a/src/libudev/libudev-private.h
+++ /dev/null
@@ -1,115 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1+ */
-#pragma once
-
-#include <signal.h>
-#include <stdbool.h>
-#include <stdint.h>
-
-#include "libudev.h"
-#include "sd-device.h"
-
-#include "macro.h"
-#include "mkdir.h"
-#include "strxcpyx.h"
-#include "util.h"
-
-#define READ_END  0
-#define WRITE_END 1
-
-/* libudev-device.c */
-struct udev_device *udev_device_new_from_nulstr(struct udev *udev, char *nulstr, ssize_t buflen);
-struct udev_device *udev_device_new_from_synthetic_event(struct udev *udev, const char *syspath, const char *action);
-struct udev_device *udev_device_shallow_clone(struct udev_device *old_device);
-struct udev_device *udev_device_clone_with_db(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);
-int udev_device_rename(struct udev_device *udev_device, const char *new_name);
-int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink);
-void udev_device_cleanup_devlinks_list(struct udev_device *udev_device);
-int udev_device_add_property(struct udev_device *udev_device, const char *key, const char *value);
-char **udev_device_get_properties_envp(struct udev_device *udev_device);
-ssize_t udev_device_get_properties_monitor_buf(struct udev_device *udev_device, const char **buf);
-const char *udev_device_get_devpath_old(struct udev_device *udev_device);
-const char *udev_device_get_id_filename(struct udev_device *udev_device);
-void udev_device_set_is_initialized(struct udev_device *udev_device);
-int udev_device_add_tag(struct udev_device *udev_device, const char *tag);
-void udev_device_remove_tag(struct udev_device *udev_device, const char *tag);
-void udev_device_cleanup_tags_list(struct udev_device *udev_device);
-void udev_device_ensure_usec_initialized(struct udev_device *udev_device, struct udev_device *old_device);
-int udev_device_get_devlink_priority(struct udev_device *udev_device);
-int udev_device_set_devlink_priority(struct udev_device *udev_device, int prio);
-int udev_device_get_watch_handle(struct udev_device *udev_device);
-int udev_device_set_watch_handle(struct udev_device *udev_device, int handle);
-int udev_device_get_ifindex(struct udev_device *udev_device);
-void udev_device_set_info_loaded(struct udev_device *device);
-void udev_device_set_db_persist(struct udev_device *udev_device);
-void udev_device_read_db(struct udev_device *udev_device);
-int udev_device_update_db(struct udev_device *udev_device);
-int udev_device_delete_db(struct udev_device *udev_device);
-int udev_device_tag_index(struct udev_device *dev, struct udev_device *dev_old, bool add);
-
-/* libudev-monitor.c - netlink/unix socket communication  */
-int udev_monitor_disconnect(struct udev_monitor *udev_monitor);
-int udev_monitor_allow_unicast_sender(struct udev_monitor *udev_monitor, struct udev_monitor *sender);
-int udev_monitor_send_device(struct udev_monitor *udev_monitor,
-                             struct udev_monitor *destination, struct udev_device *udev_device);
-struct udev_monitor *udev_monitor_new_from_netlink_fd(struct udev *udev, const char *name, int fd);
-int udev_monitor_receive_sd_device(struct udev_monitor *udev_monitor, sd_device **ret);
-
-/* libudev-list.c */
-struct udev_list_node {
-        struct udev_list_node *next, *prev;
-};
-struct udev_list {
-        struct udev *udev;
-        struct udev_list_node node;
-        struct udev_list_entry **entries;
-        unsigned entries_cur;
-        unsigned entries_max;
-        bool unique;
-};
-void udev_list_node_init(struct udev_list_node *list);
-int udev_list_node_is_empty(struct udev_list_node *list);
-void udev_list_node_append(struct udev_list_node *new, struct udev_list_node *list);
-void udev_list_node_remove(struct udev_list_node *entry);
-#define udev_list_node_foreach(node, list) \
-        for (node = (list)->next; \
-             node != list; \
-             node = (node)->next)
-#define udev_list_node_foreach_safe(node, tmp, list) \
-        for (node = (list)->next, tmp = (node)->next; \
-             node != list; \
-             node = tmp, tmp = (tmp)->next)
-void udev_list_init(struct udev *udev, struct udev_list *list, bool unique);
-void udev_list_cleanup(struct udev_list *list);
-struct udev_list_entry *udev_list_get_entry(struct udev_list *list);
-struct udev_list_entry *udev_list_entry_add(struct udev_list *list, const char *name, const char *value);
-void udev_list_entry_delete(struct udev_list_entry *entry);
-int udev_list_entry_get_num(struct udev_list_entry *list_entry);
-void udev_list_entry_set_num(struct udev_list_entry *list_entry, int num);
-#define udev_list_entry_foreach_safe(entry, tmp, first) \
-        for (entry = first, tmp = udev_list_entry_get_next(entry); \
-             entry != NULL; \
-             entry = tmp, tmp = udev_list_entry_get_next(tmp))
-
-/* libudev-util.c */
-#define UTIL_PATH_SIZE                      1024
-#define UTIL_NAME_SIZE                       512
-#define UTIL_LINE_SIZE                     16384
-#define UDEV_ALLOWED_CHARS_INPUT        "/ $%?,"
-size_t util_path_encode(const char *src, char *dest, size_t size);
-int util_replace_whitespace(const char *str, char *to, size_t len);
-int util_replace_chars(char *str, const char *white);
-uint32_t util_string_hash32(const char *key);
-uint64_t util_string_bloom64(const char *str);
-int util_resolve_subsys_kernel(const char *string, char *result, size_t maxsize, int read_value);
-
-/* Cleanup functions */
-DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev*, udev_unref);
-DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_device*, udev_device_unref);
-DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_enumerate*, udev_enumerate_unref);
-DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_monitor*, udev_monitor_unref);
-DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_hwdb*, udev_hwdb_unref);
-DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_queue*, udev_queue_unref);
diff --git a/src/libudev/libudev-queue.c b/src/libudev/libudev-queue.c
index 832f3b3da5..60a84cb03b 100644
--- a/src/libudev/libudev-queue.c
+++ b/src/libudev/libudev-queue.c
@@ -9,10 +9,11 @@
 #include <sys/inotify.h>
 #include <unistd.h>
 
+#include "libudev.h"
+
 #include "alloc-util.h"
 #include "fd-util.h"
 #include "io-util.h"
-#include "libudev-private.h"
 
 /**
  * SECTION:libudev-queue
@@ -45,7 +46,7 @@ _public_ struct udev_queue *udev_queue_new(struct udev *udev) {
         struct udev_queue *udev_queue;
 
         udev_queue = new(struct udev_queue, 1);
-        if (udev_queue == NULL) {
+        if (!udev_queue) {
                 errno = ENOMEM;
                 return NULL;
         }
diff --git a/src/libudev/libudev-util.c b/src/libudev/libudev-util.c
index df5223e5a9..f07b29ab48 100644
--- a/src/libudev/libudev-util.c
+++ b/src/libudev/libudev-util.c
@@ -7,11 +7,9 @@
 #include <string.h>
 #include <unistd.h>
 
-#include "libudev.h"
-
-#include "MurmurHash2.h"
 #include "device-nodes.h"
-#include "libudev-private.h"
+#include "libudev-util.h"
+#include "strxcpyx.h"
 #include "utf8.h"
 
 /**
@@ -38,13 +36,13 @@ int util_resolve_subsys_kernel(const char *string,
         subsys = &temp[1];
 
         sysname = strchr(subsys, '/');
-        if (sysname == NULL)
+        if (!sysname)
                 return -1;
         sysname[0] = '\0';
         sysname = &sysname[1];
 
         attr = strchr(sysname, ']');
-        if (attr == NULL)
+        if (!attr)
                 return -1;
         attr[0] = '\0';
         attr = &attr[1];
@@ -53,18 +51,18 @@ int util_resolve_subsys_kernel(const char *string,
         if (attr[0] == '\0')
                 attr = NULL;
 
-        if (read_value && attr == NULL)
+        if (read_value && !attr)
                 return -1;
 
         dev = udev_device_new_from_subsystem_sysname(NULL, subsys, sysname);
-        if (dev == NULL)
+        if (!dev)
                 return -1;
 
         if (read_value) {
                 const char *val;
 
                 val = udev_device_get_sysattr_value(dev, attr);
-                if (val != NULL)
+                if (val)
                         strscpy(result, maxsize, val);
                 else
                         result[0] = '\0';
@@ -75,7 +73,7 @@ int util_resolve_subsys_kernel(const char *string,
 
                 s = result;
                 l = strpcpyl(&s, maxsize, udev_device_get_syspath(dev), NULL);
-                if (attr != NULL)
+                if (attr)
                         strpcpyl(&s, l, "/", attr, NULL);
                 log_debug("path '[%s/%s]%s' is '%s'", subsys, sysname, attr, result);
         }
@@ -182,7 +180,7 @@ int util_replace_chars(char *str, const char *white) {
                 }
 
                 /* if space is allowed, replace whitespace with ordinary space */
-                if (isspace(str[i]) && white != NULL && strchr(white, ' ') != NULL) {
+                if (isspace(str[i]) && white && strchr(white, ' ')) {
                         str[i] = ' ';
                         i++;
                         replaced++;
diff --git a/src/libudev/libudev-util.h b/src/libudev/libudev-util.h
new file mode 100644
index 0000000000..fb5558da88
--- /dev/null
+++ b/src/libudev/libudev-util.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#pragma once
+
+#include "libudev.h"
+
+#include "macro.h"
+
+/* libudev-util.c */
+#define UTIL_PATH_SIZE                      1024
+#define UTIL_NAME_SIZE                       512
+#define UTIL_LINE_SIZE                     16384
+#define UDEV_ALLOWED_CHARS_INPUT        "/ $%?,"
+size_t util_path_encode(const char *src, char *dest, size_t size);
+int util_replace_whitespace(const char *str, char *to, size_t len);
+int util_replace_chars(char *str, const char *white);
+int util_resolve_subsys_kernel(const char *string, char *result, size_t maxsize, int read_value);
+
+/* Cleanup functions */
+DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev*, udev_unref);
+DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_device*, udev_device_unref);
+DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_enumerate*, udev_enumerate_unref);
+DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_monitor*, udev_monitor_unref);
+DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_hwdb*, udev_hwdb_unref);
+DEFINE_TRIVIAL_CLEANUP_FUNC(struct udev_queue*, udev_queue_unref);
diff --git a/src/libudev/libudev.c b/src/libudev/libudev.c
index 4554b922e3..4c26231f86 100644
--- a/src/libudev/libudev.c
+++ b/src/libudev/libudev.c
@@ -11,7 +11,6 @@
 
 #include "alloc-util.h"
 #include "fd-util.h"
-#include "libudev-private.h"
 #include "missing.h"
 #include "string-util.h"
 
diff --git a/src/libudev/libudev.h b/src/libudev/libudev.h
index 3e3d0591dd..02c2e5e8ed 100644
--- a/src/libudev/libudev.h
+++ b/src/libudev/libudev.h
@@ -49,7 +49,7 @@ const char *udev_list_entry_get_value(struct udev_list_entry *list_entry);
  */
 #define udev_list_entry_foreach(list_entry, first_entry) \
         for (list_entry = first_entry; \
-             list_entry != NULL; \
+             list_entry; \
              list_entry = udev_list_entry_get_next(list_entry))
 
 /*
diff --git a/src/libudev/meson.build b/src/libudev/meson.build
index 323c7e97d0..8d86c34189 100644
--- a/src/libudev/meson.build
+++ b/src/libudev/meson.build
@@ -1,17 +1,17 @@
 # SPDX-License-Identifier: LGPL-2.1+
 
 libudev_sources = files('''
-        libudev-private.h
-        libudev-device-internal.h
         libudev.c
-        libudev-list.c
-        libudev-util.c
         libudev-device.c
-        libudev-device-private.c
+        libudev-device-internal.h
         libudev-enumerate.c
+        libudev-hwdb.c
+        libudev-list.c
+        libudev-list-internal.h
         libudev-monitor.c
         libudev-queue.c
-        libudev-hwdb.c
+        libudev-util.c
+        libudev-util.h
 '''.split())
 
 ############################################################
diff --git a/src/test/test-libudev.c b/src/test/test-libudev.c
index 8ffbab14f9..abf79874bd 100644
--- a/src/test/test-libudev.c
+++ b/src/test/test-libudev.c
@@ -1,12 +1,13 @@
 /* SPDX-License-Identifier: LGPL-2.1+ */
 
+#include <errno.h>
 #include <getopt.h>
 #include <stdio.h>
 #include <sys/epoll.h>
 #include <unistd.h>
 
 #include "fd-util.h"
-#include "libudev-private.h"
+#include "libudev-util.h"
 #include "log.h"
 #include "stdio-util.h"
 #include "string-util.h"
diff --git a/src/test/test-udev.c b/src/test/test-udev.c
index b93876d26f..49198f8633 100644
--- a/src/test/test-udev.c
+++ b/src/test/test-udev.c
@@ -15,6 +15,7 @@
 #include "fs-util.h"
 #include "log.h"
 #include "missing.h"
+#include "mkdir.h"
 #include "selinux-util.h"
 #include "signal-util.h"
 #include "string-util.h"
diff --git a/src/udev/ata_id/ata_id.c b/src/udev/ata_id/ata_id.c
index e98425841f..6c2233e430 100644
--- a/src/udev/ata_id/ata_id.c
+++ b/src/udev/ata_id/ata_id.c
@@ -24,9 +24,10 @@
 #include <unistd.h>
 
 #include "fd-util.h"
-#include "libudev-private.h"
+#include "libudev-util.h"
 #include "log.h"
 #include "udev-util.h"
+#include "util.h"
 
 #define COMMAND_TIMEOUT_MSEC (30 * 1000)
 
diff --git a/src/udev/scsi_id/scsi_id.c b/src/udev/scsi_id/scsi_id.c
index 2cace552f2..e50edb20b3 100644
--- a/src/udev/scsi_id/scsi_id.c
+++ b/src/udev/scsi_id/scsi_id.c
@@ -19,9 +19,10 @@
 
 #include "alloc-util.h"
 #include "fd-util.h"
-#include "libudev-private.h"
+#include "libudev-util.h"
 #include "scsi_id.h"
 #include "string-util.h"
+#include "strxcpyx.h"
 #include "udev-util.h"
 
 static const struct option options[] = {
diff --git a/src/udev/udev-builtin-path_id.c b/src/udev/udev-builtin-path_id.c
index e8581a4869..94f2740592 100644
--- a/src/udev/udev-builtin-path_id.c
+++ b/src/udev/udev-builtin-path_id.c
@@ -18,7 +18,7 @@
 #include "alloc-util.h"
 #include "dirent-util.h"
 #include "fd-util.h"
-#include "libudev-private.h"
+#include "libudev-util.h"
 #include "string-util.h"
 #include "strv.h"
 #include "sysexits.h"
diff --git a/src/udev/udev-builtin-usb_id.c b/src/udev/udev-builtin-usb_id.c
index 73f53b31a4..3525d25048 100644
--- a/src/udev/udev-builtin-usb_id.c
+++ b/src/udev/udev-builtin-usb_id.c
@@ -18,8 +18,9 @@
 #include "alloc-util.h"
 #include "device-util.h"
 #include "fd-util.h"
-#include "libudev-private.h"
+#include "libudev-util.h"
 #include "string-util.h"
+#include "strxcpyx.h"
 #include "udev-builtin.h"
 
 static void set_usb_iftype(char *to, int if_class_num, size_t len) {
diff --git a/src/udev/udev-event.c b/src/udev/udev-event.c
index 40f4dac05e..cc7efbb81e 100644
--- a/src/udev/udev-event.c
+++ b/src/udev/udev-event.c
@@ -16,13 +16,15 @@
 #include "device-util.h"
 #include "fd-util.h"
 #include "format-util.h"
-#include "libudev-private.h"
+#include "libudev-util.h"
 #include "netlink-util.h"
 #include "path-util.h"
 #include "process-util.h"
 #include "signal-util.h"
 #include "stdio-util.h"
 #include "string-util.h"
+#include "strv.h"
+#include "strxcpyx.h"
 #include "udev-builtin.h"
 #include "udev-node.h"
 #include "udev-watch.h"
diff --git a/src/udev/udev-node.c b/src/udev/udev-node.c
index 94bebd69c7..648a102265 100644
--- a/src/udev/udev-node.c
+++ b/src/udev/udev-node.c
@@ -17,12 +17,14 @@
 #include "fd-util.h"
 #include "format-util.h"
 #include "fs-util.h"
-#include "libudev-private.h"
+#include "libudev-util.h"
+#include "mkdir.h"
 #include "path-util.h"
 #include "selinux-util.h"
 #include "smack-util.h"
 #include "stdio-util.h"
 #include "string-util.h"
+#include "strxcpyx.h"
 #include "udev-node.h"
 
 static int node_symlink(sd_device *dev, const char *node, const char *slink) {
diff --git a/src/udev/udev-rules.c b/src/udev/udev-rules.c
index c52f93af1c..c470338807 100644
--- a/src/udev/udev-rules.c
+++ b/src/udev/udev-rules.c
@@ -23,7 +23,8 @@
 #include "fileio.h"
 #include "fs-util.h"
 #include "glob-util.h"
-#include "libudev-private.h"
+#include "libudev-util.h"
+#include "mkdir.h"
 #include "path-util.h"
 #include "proc-cmdline.h"
 #include "stat-util.h"
@@ -31,6 +32,7 @@
 #include "strbuf.h"
 #include "string-util.h"
 #include "strv.h"
+#include "strxcpyx.h"
 #include "sysctl-util.h"
 #include "udev-builtin.h"
 #include "udev.h"
diff --git a/src/udev/udev.h b/src/udev/udev.h
index e92e878e24..320f9a1534 100644
--- a/src/udev/udev.h
+++ b/src/udev/udev.h
@@ -5,20 +5,16 @@
  * Copyright © 2003 Greg Kroah-Hartman <greg@kroah.com>
  */
 
-#include <sys/param.h>
-#include <sys/sysmacros.h>
-#include <sys/types.h>
-
 #include "sd-device.h"
 #include "sd-netlink.h"
 
 #include "hashmap.h"
-#include "label.h"
-#include "libudev-private.h"
 #include "macro.h"
-#include "strv.h"
-#include "util.h"
 #include "udev-util.h"
+#include "util.h"
+
+#define READ_END  0
+#define WRITE_END 1
 
 struct udev_event {
         sd_device *dev;
diff --git a/src/udev/udevadm-settle.c b/src/udev/udevadm-settle.c
index 6960324516..a2a8893870 100644
--- a/src/udev/udevadm-settle.c
+++ b/src/udev/udevadm-settle.c
@@ -13,7 +13,7 @@
 #include <string.h>
 #include <unistd.h>
 
-#include "libudev-private.h"
+#include "libudev-util.h"
 #include "time-util.h"
 #include "udevadm.h"
 #include "udev-ctrl.h"
diff --git a/src/udev/udevadm-test.c b/src/udev/udevadm-test.c
index 6f3b6099a9..2ee78da51b 100644
--- a/src/udev/udevadm-test.c
+++ b/src/udev/udevadm-test.c
@@ -16,7 +16,9 @@
 
 #include "device-private.h"
 #include "device-util.h"
+#include "libudev-util.h"
 #include "string-util.h"
+#include "strxcpyx.h"
 #include "udev-builtin.h"
 #include "udev.h"
 #include "udevadm.h"
diff --git a/src/udev/udevd.c b/src/udev/udevd.c
index a6d6bbf5fd..516453877f 100644
--- a/src/udev/udevd.c
+++ b/src/udev/udevd.c
@@ -46,6 +46,7 @@
 #include "io-util.h"
 #include "libudev-device-internal.h"
 #include "list.h"
+#include "mkdir.h"
 #include "netlink-util.h"
 #include "parse-util.h"
 #include "proc-cmdline.h"
@@ -54,6 +55,7 @@
 #include "signal-util.h"
 #include "socket-util.h"
 #include "string-util.h"
+#include "strxcpyx.h"
 #include "syslog-util.h"
 #include "terminal-util.h"
 #include "udev-builtin.h"