basic: include only what we use

This is a cleaned up result of running iwyu but without forward
declarations on src/basic.

128 files changed, 481 insertions, 135 deletions

diff --git a/src/basic/af-list.c b/src/basic/af-list.c
index 07dfff6ad4..606bb49a59 100644
--- a/src/basic/af-list.c
+++ b/src/basic/af-list.c
@@ -23,7 +23,7 @@
 #include <sys/socket.h>
 
 #include "af-list.h"
-#include "util.h"
+#include "macro.h"
 
 static const struct af_name* lookup_af(register const char *str, register unsigned int len);
 
diff --git a/src/basic/alloc-util.c b/src/basic/alloc-util.c
index 48183e381f..0c6a15c958 100644
--- a/src/basic/alloc-util.c
+++ b/src/basic/alloc-util.c
@@ -19,7 +19,11 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <stdint.h>
+#include <string.h>
+
 #include "alloc-util.h"
+#include "macro.h"
 #include "util.h"
 
 void* memdup(const void *p, size_t l) {
diff --git a/src/basic/alloc-util.h b/src/basic/alloc-util.h
index 12b602e185..f5097ea117 100644
--- a/src/basic/alloc-util.h
+++ b/src/basic/alloc-util.h
@@ -22,6 +22,7 @@
 ***/
 
 #include <alloca.h>
+#include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
 
diff --git a/src/basic/arphrd-list.c b/src/basic/arphrd-list.c
index 03d8ad7403..c1fdbbd905 100644
--- a/src/basic/arphrd-list.c
+++ b/src/basic/arphrd-list.c
@@ -23,7 +23,7 @@
 #include <string.h>
 
 #include "arphrd-list.h"
-#include "util.h"
+#include "macro.h"
 
 static const struct arphrd_name* lookup_arphrd(register const char *str, register unsigned int len);
 
diff --git a/src/basic/async.c b/src/basic/async.c
index cfc5d224e1..42c66a762e 100644
--- a/src/basic/async.c
+++ b/src/basic/async.c
@@ -19,12 +19,15 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
 #include <pthread.h>
+#include <stddef.h>
 #include <unistd.h>
 
 #include "async.h"
 #include "fd-util.h"
 #include "log.h"
+#include "macro.h"
 #include "util.h"
 
 int asynchronous_job(void* (*func)(void *p), void *arg) {
diff --git a/src/basic/audit-util.c b/src/basic/audit-util.c
index 4612297334..e52ee24c05 100644
--- a/src/basic/audit-util.c
+++ b/src/basic/audit-util.c
@@ -20,7 +20,9 @@
 ***/
 
 #include <errno.h>
+#include <linux/netlink.h>
 #include <stdio.h>
+#include <sys/socket.h>
 
 #include "alloc-util.h"
 #include "audit-util.h"
@@ -30,7 +32,6 @@
 #include "parse-util.h"
 #include "process-util.h"
 #include "user-util.h"
-#include "util.h"
 
 int audit_session_from_pid(pid_t pid, uint32_t *id) {
         _cleanup_free_ char *s = NULL;
diff --git a/src/basic/barrier.c b/src/basic/barrier.c
index 2d55bab4ab..9a78a80eb2 100644
--- a/src/basic/barrier.c
+++ b/src/basic/barrier.c
@@ -32,7 +32,6 @@
 #include "barrier.h"
 #include "fd-util.h"
 #include "macro.h"
-#include "util.h"
 
 /**
  * Barriers
diff --git a/src/basic/barrier.h b/src/basic/barrier.h
index b8954694d3..722effe834 100644
--- a/src/basic/barrier.h
+++ b/src/basic/barrier.h
@@ -21,6 +21,8 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <stdbool.h>
+#include <stdint.h>
 #include <sys/types.h>
 
 #include "macro.h"
diff --git a/src/basic/bitmap.c b/src/basic/bitmap.c
index 1449e2ea85..95f59e400a 100644
--- a/src/basic/bitmap.c
+++ b/src/basic/bitmap.c
@@ -19,9 +19,16 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
 #include "alloc-util.h"
 #include "bitmap.h"
-#include "util.h"
+#include "hashmap.h"
+#include "macro.h"
 
 struct Bitmap {
         uint64_t *bitmaps;
diff --git a/src/basic/bitmap.h b/src/basic/bitmap.h
index 9ce7b42d00..d2726630f1 100644
--- a/src/basic/bitmap.h
+++ b/src/basic/bitmap.h
@@ -21,6 +21,8 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <stdbool.h>
+
 #include "hashmap.h"
 #include "macro.h"
 
diff --git a/src/basic/btrfs-util.c b/src/basic/btrfs-util.c
index be40dc5702..1aff9d5329 100644
--- a/src/basic/btrfs-util.c
+++ b/src/basic/btrfs-util.c
@@ -19,9 +19,20 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <linux/loop.h>
+#include <stddef.h>
+#include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
 #include <sys/stat.h>
-#include <sys/vfs.h>
+#include <sys/statfs.h>
+#include <sys/sysmacros.h>
+#include <unistd.h>
+
 #ifdef HAVE_LINUX_BTRFS_H
 #include <linux/btrfs.h>
 #endif
@@ -37,6 +48,8 @@
 #include "path-util.h"
 #include "selinux-util.h"
 #include "smack-util.h"
+#include "sparse-endian.h"
+#include "time-util.h"
 #include "stat-util.h"
 #include "string-util.h"
 #include "util.h"
diff --git a/src/basic/btrfs-util.h b/src/basic/btrfs-util.h
index 8c11ce35d2..31b9c02785 100644
--- a/src/basic/btrfs-util.h
+++ b/src/basic/btrfs-util.h
@@ -22,8 +22,11 @@
 #pragma once
 
 #include <stdbool.h>
+#include <stdint.h>
 #include <sys/types.h>
 
+#include "sd-id128.h"
+
 #include "time-util.h"
 
 typedef struct BtrfsSubvolInfo {
diff --git a/src/basic/bus-label.c b/src/basic/bus-label.c
index c1534657ac..d8d5863b03 100644
--- a/src/basic/bus-label.c
+++ b/src/basic/bus-label.c
@@ -25,7 +25,6 @@
 #include "bus-label.h"
 #include "hexdecoct.h"
 #include "macro.h"
-#include "util.h"
 
 char *bus_label_escape(const char *s) {
         char *r, *t;
diff --git a/src/basic/bus-label.h b/src/basic/bus-label.h
index ed1dc4e0a7..f51153ce6d 100644
--- a/src/basic/bus-label.h
+++ b/src/basic/bus-label.h
@@ -21,6 +21,7 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
 
diff --git a/src/basic/calendarspec.c b/src/basic/calendarspec.c
index 8f60561ede..2c670a1ac6 100644
--- a/src/basic/calendarspec.c
+++ b/src/basic/calendarspec.c
@@ -19,13 +19,19 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <alloca.h>
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <time.h>
 
 #include "alloc-util.h"
 #include "calendarspec.h"
 #include "fileio.h"
 #include "parse-util.h"
+#include "macro.h"
 #include "string-util.h"
 
 #define BITS_WEEKDAYS   127
diff --git a/src/basic/calendarspec.h b/src/basic/calendarspec.h
index 75b699682a..4e3aa9e1d8 100644
--- a/src/basic/calendarspec.h
+++ b/src/basic/calendarspec.h
@@ -26,6 +26,7 @@
 
 #include <stdbool.h>
 
+#include "time-util.h"
 #include "util.h"
 
 typedef struct CalendarComponent {
diff --git a/src/basic/cap-list.c b/src/basic/cap-list.c
index f0974900cd..aac812dc52 100644
--- a/src/basic/cap-list.c
+++ b/src/basic/cap-list.c
@@ -19,11 +19,13 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
 #include <string.h>
 
 #include "cap-list.h"
 #include "missing.h"
 #include "parse-util.h"
+#include "macro.h"
 #include "util.h"
 
 static const struct capability_name* lookup_capability(register const char *str, register unsigned int len);
diff --git a/src/basic/capability-util.c b/src/basic/capability-util.c
index 0eb5c03d65..fef722b6f2 100644
--- a/src/basic/capability-util.c
+++ b/src/basic/capability-util.c
@@ -22,6 +22,7 @@
 #include <errno.h>
 #include <grp.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <sys/capability.h>
 #include <sys/prctl.h>
 #include <unistd.h>
diff --git a/src/basic/capability-util.h b/src/basic/capability-util.h
index 4eb5c2a835..6bbf7318fd 100644
--- a/src/basic/capability-util.h
+++ b/src/basic/capability-util.h
@@ -22,8 +22,11 @@
 ***/
 
 #include <stdbool.h>
+#include <stdint.h>
 #include <sys/capability.h>
+#include <sys/types.h>
 
+#include "macro.h"
 #include "util.h"
 
 unsigned long cap_last_cap(void);
diff --git a/src/basic/cgroup-util.c b/src/basic/cgroup-util.c
index f7fc2c2c97..7c580caa43 100644
--- a/src/basic/cgroup-util.c
+++ b/src/basic/cgroup-util.c
@@ -22,10 +22,13 @@
 #include <dirent.h>
 #include <errno.h>
 #include <ftw.h>
+#include <limits.h>
 #include <signal.h>
+#include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
+#include <sys/statfs.h>
 #include <sys/types.h>
 #include <unistd.h>
 
@@ -46,12 +49,14 @@
 #include "process-util.h"
 #include "set.h"
 #include "special.h"
+#include "def.h"
+#include "log.h"
+#include "missing.h"
 #include "stat-util.h"
 #include "string-table.h"
 #include "string-util.h"
 #include "unit-name.h"
 #include "user-util.h"
-#include "util.h"
 
 int cg_enumerate_processes(const char *controller, const char *path, FILE **_f) {
         _cleanup_free_ char *fs = NULL;
diff --git a/src/basic/cgroup-util.h b/src/basic/cgroup-util.h
index a80ee60bd3..b506995794 100644
--- a/src/basic/cgroup-util.h
+++ b/src/basic/cgroup-util.h
@@ -22,11 +22,15 @@
 ***/
 
 #include <dirent.h>
+#include <stdbool.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <sys/types.h>
 
 #include "def.h"
 #include "set.h"
+#include "hashmap.h"
+#include "macro.h"
 
 /* An enum of well known cgroup controllers */
 typedef enum CGroupController {
diff --git a/src/basic/chattr-util.c b/src/basic/chattr-util.c
index d49ca0537a..438fc63c5c 100644
--- a/src/basic/chattr-util.c
+++ b/src/basic/chattr-util.c
@@ -19,13 +19,15 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <fcntl.h>
 #include <sys/ioctl.h>
 #include <sys/stat.h>
 #include <linux/fs.h>
 
 #include "chattr-util.h"
 #include "fd-util.h"
-#include "util.h"
+#include "macro.h"
 
 int chattr_fd(int fd, unsigned value, unsigned mask) {
         unsigned old_attr, new_attr;
diff --git a/src/basic/clock-util.c b/src/basic/clock-util.c
index 00ee4c2796..00f549c023 100644
--- a/src/basic/clock-util.c
+++ b/src/basic/clock-util.c
@@ -21,6 +21,9 @@
 
 #include <errno.h>
 #include <fcntl.h>
+#include <limits.h>
+#include <stdbool.h>
+#include <time.h>
 #include <linux/rtc.h>
 #include <stdio.h>
 #include <sys/ioctl.h>
@@ -30,7 +33,6 @@
 #include "fd-util.h"
 #include "macro.h"
 #include "string-util.h"
-#include "util.h"
 
 int clock_get_hwclock(struct tm *tm) {
         _cleanup_close_ int fd = -1;
diff --git a/src/basic/conf-files.c b/src/basic/conf-files.c
index be9972ffff..75dad228e3 100644
--- a/src/basic/conf-files.c
+++ b/src/basic/conf-files.c
@@ -21,6 +21,7 @@
 
 #include <dirent.h>
 #include <errno.h>
+#include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
diff --git a/src/basic/copy.c b/src/basic/copy.c
index a187ae08fe..c335959b74 100644
--- a/src/basic/copy.c
+++ b/src/basic/copy.c
@@ -19,8 +19,18 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 #include <sys/sendfile.h>
+#include <sys/stat.h>
 #include <sys/xattr.h>
+#include <time.h>
+#include <unistd.h>
 
 #include "alloc-util.h"
 #include "btrfs-util.h"
@@ -31,10 +41,11 @@
 #include "fileio.h"
 #include "fs-util.h"
 #include "io-util.h"
+#include "macro.h"
+#include "time-util.h"
 #include "string-util.h"
 #include "strv.h"
 #include "umask-util.h"
-#include "util.h"
 #include "xattr-util.h"
 
 #define COPY_BUFFER_SIZE (16*1024)
diff --git a/src/basic/copy.h b/src/basic/copy.h
index ba0890b442..b3fc2bb709 100644
--- a/src/basic/copy.h
+++ b/src/basic/copy.h
@@ -23,6 +23,7 @@
 
 #include <inttypes.h>
 #include <stdbool.h>
+#include <stdint.h>
 #include <sys/types.h>
 
 int copy_file_fd(const char *from, int to, bool try_reflink);
diff --git a/src/basic/cpu-set-util.c b/src/basic/cpu-set-util.c
index e2ec4ca83f..51c0693954 100644
--- a/src/basic/cpu-set-util.c
+++ b/src/basic/cpu-set-util.c
@@ -20,12 +20,17 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <stddef.h>
+#include <syslog.h>
+
 #include "alloc-util.h"
 #include "cpu-set-util.h"
 #include "extract-word.h"
 #include "parse-util.h"
+#include "log.h"
+#include "macro.h"
 #include "string-util.h"
-#include "util.h"
 
 cpu_set_t* cpu_set_malloc(unsigned *ncpus) {
         cpu_set_t *c;
diff --git a/src/basic/device-nodes.c b/src/basic/device-nodes.c
index 9d5af72d27..ec58cfdd4c 100644
--- a/src/basic/device-nodes.c
+++ b/src/basic/device-nodes.c
@@ -19,7 +19,9 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
 #include <stdio.h>
+#include <string.h>
 
 #include "device-nodes.h"
 #include "utf8.h"
diff --git a/src/basic/device-nodes.h b/src/basic/device-nodes.h
index 7db81f3d52..9669c86970 100644
--- a/src/basic/device-nodes.h
+++ b/src/basic/device-nodes.h
@@ -21,6 +21,7 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <stddef.h>
 #include <sys/types.h>
 
 int encode_devnode_name(const char *str, char *str_enc, size_t len);
diff --git a/src/basic/dirent-util.c b/src/basic/dirent-util.c
index c433d5844a..4ef5aba5a8 100644
--- a/src/basic/dirent-util.c
+++ b/src/basic/dirent-util.c
@@ -21,10 +21,9 @@
 
 #include <fcntl.h>
 #include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
 
 #include "dirent-util.h"
+#include "path-util.h"
 #include "string-util.h"
 
 int dirent_ensure_type(DIR *d, struct dirent *de) {
diff --git a/src/basic/dirent-util.h b/src/basic/dirent-util.h
index 5866a755f4..58273bb988 100644
--- a/src/basic/dirent-util.h
+++ b/src/basic/dirent-util.h
@@ -22,8 +22,11 @@
 ***/
 
 #include <dirent.h>
+#include <errno.h>
+#include <stdbool.h>
 
 #include "path-util.h"
+#include "macro.h"
 
 int dirent_ensure_type(DIR *d, struct dirent *de);
 
diff --git a/src/basic/env-util.c b/src/basic/env-util.c
index 441169db31..fe8c825f36 100644
--- a/src/basic/env-util.c
+++ b/src/basic/env-util.c
@@ -19,17 +19,21 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
 #include <limits.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #include "alloc-util.h"
-#include "def.h"
 #include "env-util.h"
 #include "parse-util.h"
+#include "extract-word.h"
+#include "macro.h"
 #include "string-util.h"
 #include "strv.h"
 #include "utf8.h"
-#include "util.h"
 
 #define VALID_CHARS_ENV_NAME                    \
         DIGITS LETTERS                          \
diff --git a/src/basic/env-util.h b/src/basic/env-util.h
index 5efffa3dc7..3b83a63a78 100644
--- a/src/basic/env-util.h
+++ b/src/basic/env-util.h
@@ -22,6 +22,7 @@
 ***/
 
 #include <stdbool.h>
+#include <stddef.h>
 
 #include "macro.h"
 
diff --git a/src/basic/errno-list.c b/src/basic/errno-list.c
index 22869e4136..0a66902ac9 100644
--- a/src/basic/errno-list.c
+++ b/src/basic/errno-list.c
@@ -22,7 +22,7 @@
 #include <string.h>
 
 #include "errno-list.h"
-#include "util.h"
+#include "macro.h"
 
 static const struct errno_name* lookup_errno(register const char *str,
                                                  register unsigned int len);
diff --git a/src/basic/escape.c b/src/basic/escape.c
index 42a84c9317..ab282efa3c 100644
--- a/src/basic/escape.c
+++ b/src/basic/escape.c
@@ -19,12 +19,15 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
 #include "alloc-util.h"
 #include "escape.h"
 #include "hexdecoct.h"
-#include "string-util.h"
+#include "macro.h"
 #include "utf8.h"
-#include "util.h"
 
 size_t cescape_char(char c, char *buf) {
         char * buf_old = buf;
diff --git a/src/basic/escape.h b/src/basic/escape.h
index 52ebf11c4a..c710f01743 100644
--- a/src/basic/escape.h
+++ b/src/basic/escape.h
@@ -22,8 +22,12 @@
 ***/
 
 #include <inttypes.h>
+#include <stddef.h>
+#include <stdint.h>
 #include <sys/types.h>
 
+#include "string-util.h"
+
 /* What characters are special in the shell? */
 /* must be escaped outside and inside double-quotes */
 #define SHELL_NEED_ESCAPE "\"\\`$"
diff --git a/src/basic/ether-addr-util.c b/src/basic/ether-addr-util.c
index 2bf3bfec1d..bc54f8f5f4 100644
--- a/src/basic/ether-addr-util.c
+++ b/src/basic/ether-addr-util.c
@@ -19,7 +19,9 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <net/ethernet.h>
 #include <stdio.h>
+#include <sys/types.h>
 
 #include "ether-addr-util.h"
 #include "macro.h"
diff --git a/src/basic/exit-status.h b/src/basic/exit-status.h
index 7259cd1d18..850f58fd98 100644
--- a/src/basic/exit-status.h
+++ b/src/basic/exit-status.h
@@ -24,6 +24,8 @@
 #include <stdbool.h>
 
 #include "set.h"
+#include "hashmap.h"
+#include "macro.h"
 
 typedef enum ExitStatus {
         /* EXIT_SUCCESS defined by libc */
diff --git a/src/basic/extract-word.c b/src/basic/extract-word.c
index fd495692fa..7cc2a1de13 100644
--- a/src/basic/extract-word.c
+++ b/src/basic/extract-word.c
@@ -19,12 +19,22 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+
 #include "alloc-util.h"
 #include "escape.h"
 #include "extract-word.h"
+#include "log.h"
+#include "macro.h"
 #include "string-util.h"
 #include "utf8.h"
-#include "util.h"
 
 int extract_first_word(const char **p, char **ret, const char *separators, ExtractFlags flags) {
         _cleanup_free_ char *s = NULL;
diff --git a/src/basic/fd-util.c b/src/basic/fd-util.c
index d1b1db3a4d..678ac3b195 100644
--- a/src/basic/fd-util.c
+++ b/src/basic/fd-util.c
@@ -19,10 +19,19 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include "dirent-util.h"
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/resource.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
 #include "fd-util.h"
 #include "parse-util.h"
 #include "socket-util.h"
+#include "macro.h"
+#include "missing.h"
+#include "path-util.h"
 #include "util.h"
 
 int close_nointr(int fd) {
diff --git a/src/basic/fdset.c b/src/basic/fdset.c
index e5452f3bb0..654ec5a639 100644
--- a/src/basic/fdset.c
+++ b/src/basic/fdset.c
@@ -19,19 +19,21 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <alloca.h>
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <stddef.h>
 
 #include "sd-daemon.h"
 
-#include "dirent-util.h"
 #include "fd-util.h"
 #include "fdset.h"
 #include "macro.h"
 #include "parse-util.h"
 #include "set.h"
-#include "util.h"
+#include "log.h"
+#include "path-util.h"
 
 #define MAKE_SET(s) ((Set*) s)
 #define MAKE_FDSET(s) ((FDSet*) s)
diff --git a/src/basic/fdset.h b/src/basic/fdset.h
index 70d8acbcff..58a5b45f28 100644
--- a/src/basic/fdset.h
+++ b/src/basic/fdset.h
@@ -21,7 +21,11 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <stdbool.h>
+
 #include "set.h"
+#include "hashmap.h"
+#include "macro.h"
 
 typedef struct FDSet FDSet;
 
diff --git a/src/basic/fileio-label.c b/src/basic/fileio-label.c
index 0405822ce0..52a1515cd7 100644
--- a/src/basic/fileio-label.c
+++ b/src/basic/fileio-label.c
@@ -20,9 +20,11 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <sys/stat.h>
+
 #include "fileio-label.h"
 #include "selinux-util.h"
-#include "util.h"
+#include "fileio.h"
 
 int write_string_file_atomic_label(const char *fn, const char *line) {
         int r;
diff --git a/src/basic/fileio.c b/src/basic/fileio.c
index 10aacdc56d..684ce3d58f 100644
--- a/src/basic/fileio.c
+++ b/src/basic/fileio.c
@@ -19,6 +19,15 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
 #include <unistd.h>
 
 #include "alloc-util.h"
@@ -31,12 +40,14 @@
 #include "parse-util.h"
 #include "path-util.h"
 #include "random-util.h"
+#include "log.h"
+#include "macro.h"
+#include "time-util.h"
 #include "stdio-util.h"
 #include "string-util.h"
 #include "strv.h"
 #include "umask-util.h"
 #include "utf8.h"
-#include "util.h"
 
 int write_string_stream(FILE *f, const char *line, bool enforce_newline) {
 
diff --git a/src/basic/fs-util.c b/src/basic/fs-util.c
index 2b6189ad90..cd7abee989 100644
--- a/src/basic/fs-util.c
+++ b/src/basic/fs-util.c
@@ -19,6 +19,16 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <dirent.h>
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <time.h>
+#include <unistd.h>
+
 #include "alloc-util.h"
 #include "dirent-util.h"
 #include "fd-util.h"
@@ -27,6 +37,10 @@
 #include "mkdir.h"
 #include "parse-util.h"
 #include "path-util.h"
+#include "log.h"
+#include "macro.h"
+#include "missing.h"
+#include "time-util.h"
 #include "string-util.h"
 #include "strv.h"
 #include "user-util.h"
diff --git a/src/basic/fs-util.h b/src/basic/fs-util.h
index 5fbb7bc4c3..67ed214b51 100644
--- a/src/basic/fs-util.h
+++ b/src/basic/fs-util.h
@@ -23,6 +23,8 @@
 
 #include <fcntl.h>
 #include <limits.h>
+#include <stdbool.h>
+#include <stdint.h>
 #include <sys/inotify.h>
 #include <sys/types.h>
 #include <unistd.h>
diff --git a/src/basic/glob-util.c b/src/basic/glob-util.c
index 0bfbcb1d37..a0be0efd40 100644
--- a/src/basic/glob-util.c
+++ b/src/basic/glob-util.c
@@ -19,12 +19,12 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
 #include <glob.h>
 
 #include "glob-util.h"
-#include "string-util.h"
+#include "macro.h"
 #include "strv.h"
-#include "util.h"
 
 int glob_exists(const char *path) {
         _cleanup_globfree_ glob_t g = {};
diff --git a/src/basic/glob-util.h b/src/basic/glob-util.h
index 793adf4a6c..a0a5efe5b6 100644
--- a/src/basic/glob-util.h
+++ b/src/basic/glob-util.h
@@ -21,6 +21,7 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <stdbool.h>
 #include <string.h>
 
 #include "macro.h"
diff --git a/src/basic/gunicode.c b/src/basic/gunicode.c
index d89a2f3ed9..542110503f 100644
--- a/src/basic/gunicode.c
+++ b/src/basic/gunicode.c
@@ -4,6 +4,8 @@
  *  Copyright 2000, 2005 Red Hat, Inc.
  */
 
+#include <stdlib.h>
+
 #include "gunicode.h"
 
 #define unichar uint32_t
diff --git a/src/basic/hashmap.c b/src/basic/hashmap.c
index 6e501ef6ff..b3954e3223 100644
--- a/src/basic/hashmap.c
+++ b/src/basic/hashmap.c
@@ -21,8 +21,9 @@
 ***/
 
 #include <errno.h>
-#include <pthread.h>
+#include <stdint.h>
 #include <stdlib.h>
+#include <string.h>
 
 #include "alloc-util.h"
 #include "hashmap.h"
diff --git a/src/basic/hashmap.h b/src/basic/hashmap.h
index ed6a092d82..708811124b 100644
--- a/src/basic/hashmap.h
+++ b/src/basic/hashmap.h
@@ -22,7 +22,9 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <limits.h>
 #include <stdbool.h>
+#include <stddef.h>
 
 #include "macro.h"
 #include "siphash24.h"
diff --git a/src/basic/hexdecoct.c b/src/basic/hexdecoct.c
index 4eb566b15a..1e907de228 100644
--- a/src/basic/hexdecoct.c
+++ b/src/basic/hexdecoct.c
@@ -20,11 +20,13 @@
 ***/
 
 #include <ctype.h>
-#include <inttypes.h>
+#include <errno.h>
+#include <stdint.h>
+#include <stdlib.h>
 
 #include "alloc-util.h"
 #include "hexdecoct.h"
-#include "util.h"
+#include "macro.h"
 
 char octchar(int x) {
         return '0' + (x & 7);
diff --git a/src/basic/hexdecoct.h b/src/basic/hexdecoct.h
index 4aeb4c3bdc..d9eb54a8a1 100644
--- a/src/basic/hexdecoct.h
+++ b/src/basic/hexdecoct.h
@@ -22,6 +22,7 @@
 ***/
 
 #include <stdbool.h>
+#include <stddef.h>
 #include <stdio.h>
 #include <sys/types.h>
 
diff --git a/src/basic/hostname-util.c b/src/basic/hostname-util.c
index c57a3cbd60..795afb6d00 100644
--- a/src/basic/hostname-util.c
+++ b/src/basic/hostname-util.c
@@ -19,14 +19,19 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <ctype.h>
+#include <bits/local_lim.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
 #include <sys/utsname.h>
+#include <unistd.h>
 
 #include "fd-util.h"
 #include "fileio.h"
 #include "hostname-util.h"
+#include "macro.h"
 #include "string-util.h"
-#include "util.h"
 
 bool hostname_is_set(void) {
         struct utsname u;
diff --git a/src/basic/in-addr-util.c b/src/basic/in-addr-util.c
index b75c39aac7..5143dddf8f 100644
--- a/src/basic/in-addr-util.c
+++ b/src/basic/in-addr-util.c
@@ -20,9 +20,15 @@
 ***/
 
 #include <arpa/inet.h>
+#include <endian.h>
+#include <errno.h>
+#include <stdint.h>
+#include <stdlib.h>
 
 #include "alloc-util.h"
 #include "in-addr-util.h"
+#include "macro.h"
+#include "util.h"
 
 int in_addr_is_null(int family, const union in_addr_union *u) {
         assert(u);
diff --git a/src/basic/in-addr-util.h b/src/basic/in-addr-util.h
index 58f55b3418..bcc116c783 100644
--- a/src/basic/in-addr-util.h
+++ b/src/basic/in-addr-util.h
@@ -22,6 +22,8 @@
 ***/
 
 #include <netinet/in.h>
+#include <stddef.h>
+#include <sys/socket.h>
 
 #include "macro.h"
 #include "util.h"
diff --git a/src/basic/io-util.c b/src/basic/io-util.c
index ac8f93ff57..e83e7cec72 100644
--- a/src/basic/io-util.c
+++ b/src/basic/io-util.c
@@ -19,10 +19,15 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <limits.h>
 #include <poll.h>
+#include <stdio.h>
+#include <time.h>
 #include <unistd.h>
 
 #include "io-util.h"
+#include "time-util.h"
 
 int flush_fd(int fd) {
         struct pollfd pollfd = {
diff --git a/src/basic/io-util.h b/src/basic/io-util.h
index cd2aa75ad2..5f77a556c0 100644
--- a/src/basic/io-util.h
+++ b/src/basic/io-util.h
@@ -22,9 +22,12 @@
 ***/
 
 #include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
 #include <sys/types.h>
 #include <sys/uio.h>
 
+#include "macro.h"
 #include "time-util.h"
 
 int flush_fd(int fd);
diff --git a/src/basic/json.c b/src/basic/json.c
index 9d5dedb934..1523e9fb09 100644
--- a/src/basic/json.c
+++ b/src/basic/json.c
@@ -19,7 +19,10 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
 #include <math.h>
+#include <stdlib.h>
+#include <string.h>
 #include <sys/types.h>
 
 #include "alloc-util.h"
diff --git a/src/basic/json.h b/src/basic/json.h
index 8a7d79cb17..df3f62f206 100644
--- a/src/basic/json.h
+++ b/src/basic/json.h
@@ -22,7 +22,10 @@
 ***/
 
 #include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
 
+#include "macro.h"
 #include "util.h"
 
 enum {
diff --git a/src/basic/label.c b/src/basic/label.c
index f33502f90f..70e6ee20bf 100644
--- a/src/basic/label.c
+++ b/src/basic/label.c
@@ -19,10 +19,14 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
 #include "label.h"
 #include "selinux-util.h"
 #include "smack-util.h"
-#include "util.h"
+#include "macro.h"
 
 int label_fix(const char *path, bool ignore_enoent, bool ignore_erofs) {
         int r, q;
diff --git a/src/basic/locale-util.c b/src/basic/locale-util.c
index b87fd7670b..708da0d304 100644
--- a/src/basic/locale-util.c
+++ b/src/basic/locale-util.c
@@ -19,20 +19,29 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
 #include <langinfo.h>
+#include <libintl.h>
 #include <locale.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
 #include <sys/mman.h>
+#include <sys/stat.h>
 
 #include "dirent-util.h"
 #include "fd-util.h"
 #include "locale-util.h"
 #include "path-util.h"
 #include "set.h"
+#include "hashmap.h"
 #include "string-table.h"
 #include "string-util.h"
 #include "strv.h"
 #include "utf8.h"
-#include "util.h"
 
 static int add_locales_from_archive(Set *locales) {
         /* Stolen from glibc... */
diff --git a/src/basic/lockfile-util.c b/src/basic/lockfile-util.c
index 0bdbae480b..704ae6cc52 100644
--- a/src/basic/lockfile-util.c
+++ b/src/basic/lockfile-util.c
@@ -20,20 +20,18 @@
 ***/
 
 #include <errno.h>
-#include <limits.h>
-#include <stdbool.h>
+#include <fcntl.h>
 #include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
 #include <sys/file.h>
+#include <sys/stat.h>
 
 #include "alloc-util.h"
 #include "fd-util.h"
-#include "fileio.h"
 #include "fs-util.h"
 #include "lockfile-util.h"
 #include "path-util.h"
-#include "util.h"
+#include "macro.h"
 
 int make_lock_file(const char *p, int operation, LockFile *ret) {
         _cleanup_close_ int fd = -1;
diff --git a/src/basic/lockfile-util.h b/src/basic/lockfile-util.h
index 38d47094bd..3c514c9e62 100644
--- a/src/basic/lockfile-util.h
+++ b/src/basic/lockfile-util.h
@@ -21,6 +21,8 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <stddef.h>
+
 #include "macro.h"
 #include "missing.h"
 
diff --git a/src/basic/log.c b/src/basic/log.c
index fe29cacd9e..829f85a5d8 100644
--- a/src/basic/log.c
+++ b/src/basic/log.c
@@ -21,12 +21,18 @@
 
 #include <errno.h>
 #include <fcntl.h>
-#include <printf.h>
+#include <inttypes.h>
+#include <limits.h>
 #include <stdarg.h>
 #include <stddef.h>
 #include <stdio.h>
+#include <string.h>
+#include <sys/signalfd.h>
 #include <sys/socket.h>
+#include <sys/time.h>
+#include <sys/uio.h>
 #include <sys/un.h>
+#include <time.h>
 #include <unistd.h>
 
 #include "sd-messages.h"
@@ -43,6 +49,7 @@
 #include "process-util.h"
 #include "signal-util.h"
 #include "socket-util.h"
+#include "time-util.h"
 #include "stdio-util.h"
 #include "string-table.h"
 #include "string-util.h"
diff --git a/src/basic/login-util.c b/src/basic/login-util.c
index 41cef14e73..4e08fe3895 100644
--- a/src/basic/login-util.c
+++ b/src/basic/login-util.c
@@ -19,7 +19,8 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include "def.h"
+#include <string.h>
+
 #include "login-util.h"
 #include "string-util.h"
 
diff --git a/src/basic/memfd-util.c b/src/basic/memfd-util.c
index 92630f6b25..a9b2151195 100644
--- a/src/basic/memfd-util.c
+++ b/src/basic/memfd-util.c
@@ -19,7 +19,10 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
 #include <fcntl.h>
+#include <sys/stat.h>
+#include <unistd.h>
 #ifdef HAVE_LINUX_MEMFD_H
 #include <linux/memfd.h>
 #endif
@@ -31,9 +34,9 @@
 #include "fd-util.h"
 #include "memfd-util.h"
 #include "missing.h"
+#include "macro.h"
 #include "string-util.h"
 #include "utf8.h"
-#include "util.h"
 
 int memfd_new(const char *name) {
         _cleanup_free_ char *g = NULL;
diff --git a/src/basic/memfd-util.h b/src/basic/memfd-util.h
index 3e4de008a4..2a89361c4c 100644
--- a/src/basic/memfd-util.h
+++ b/src/basic/memfd-util.h
@@ -22,6 +22,8 @@
 ***/
 
 #include <inttypes.h>
+#include <stddef.h>
+#include <stdint.h>
 #include <sys/types.h>
 
 int memfd_new(const char *name);
diff --git a/src/basic/mempool.c b/src/basic/mempool.c
index 9ee6e6a76d..1822d3956f 100644
--- a/src/basic/mempool.c
+++ b/src/basic/mempool.c
@@ -20,6 +20,9 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <stdint.h>
+#include <stdlib.h>
+
 #include "macro.h"
 #include "mempool.h"
 #include "util.h"
diff --git a/src/basic/mkdir-label.c b/src/basic/mkdir-label.c
index c241ef6064..c9e17f7680 100644
--- a/src/basic/mkdir-label.c
+++ b/src/basic/mkdir-label.c
@@ -21,6 +21,7 @@
 ***/
 
 #include <stdio.h>
+#include <sys/types.h>
 #include <unistd.h>
 
 #include "label.h"
diff --git a/src/basic/mkdir.c b/src/basic/mkdir.c
index 5d7fb9a12d..4b809541b1 100644
--- a/src/basic/mkdir.c
+++ b/src/basic/mkdir.c
@@ -20,14 +20,16 @@
 ***/
 
 #include <errno.h>
+#include <stdbool.h>
 #include <string.h>
+#include <sys/stat.h>
 
 #include "fs-util.h"
 #include "mkdir.h"
 #include "path-util.h"
+#include "macro.h"
 #include "stat-util.h"
 #include "user-util.h"
-#include "util.h"
 
 int mkdir_safe_internal(const char *path, mode_t mode, uid_t uid, gid_t gid, mkdir_func_t _mkdir) {
         struct stat st;
diff --git a/src/basic/mount-util.c b/src/basic/mount-util.c
index 29997b1ce7..aaac2d47bd 100644
--- a/src/basic/mount-util.c
+++ b/src/basic/mount-util.c
@@ -19,9 +19,13 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <stdlib.h>
 #include <string.h>
 #include <sys/mount.h>
+#include <sys/stat.h>
 #include <sys/statvfs.h>
+#include <unistd.h>
 
 #include "alloc-util.h"
 #include "escape.h"
@@ -31,9 +35,9 @@
 #include "parse-util.h"
 #include "path-util.h"
 #include "set.h"
+#include "hashmap.h"
 #include "stdio-util.h"
 #include "string-util.h"
-#include "util.h"
 
 static int fd_fdinfo_mnt_id(int fd, const char *filename, int flags, int *mnt_id) {
         char path[strlen("/proc/self/fdinfo/") + DECIMAL_STR_MAX(int)];
diff --git a/src/basic/mount-util.h b/src/basic/mount-util.h
index 48954c2d67..3be75e6614 100644
--- a/src/basic/mount-util.h
+++ b/src/basic/mount-util.h
@@ -24,10 +24,12 @@
 #include <fcntl.h>
 #include <mntent.h>
 #include <stdbool.h>
+#include <stdio.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 
 #include "missing.h"
+#include "macro.h"
 
 int fd_is_mount_point(int fd, const char *filename, int flags);
 int path_is_mount_point(const char *path, int flags);
diff --git a/src/basic/parse-util.c b/src/basic/parse-util.c
index 3ae99d9334..3d8123ca0d 100644
--- a/src/basic/parse-util.c
+++ b/src/basic/parse-util.c
@@ -19,11 +19,19 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <inttypes.h>
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <xlocale.h>
+
 #include "alloc-util.h"
 #include "extract-word.h"
 #include "parse-util.h"
+#include "macro.h"
 #include "string-util.h"
-#include "util.h"
 
 int parse_boolean(const char *v) {
         assert(v);
diff --git a/src/basic/parse-util.h b/src/basic/parse-util.h
index 125de53d7a..af439cfaa7 100644
--- a/src/basic/parse-util.h
+++ b/src/basic/parse-util.h
@@ -22,6 +22,9 @@
 ***/
 
 #include <inttypes.h>
+#include <limits.h>
+#include <stddef.h>
+#include <stdint.h>
 #include <sys/types.h>
 
 #include "macro.h"
diff --git a/src/basic/path-util.c b/src/basic/path-util.c
index ec90c432a4..95b1052aeb 100644
--- a/src/basic/path-util.c
+++ b/src/basic/path-util.c
@@ -20,11 +20,11 @@
 ***/
 
 #include <errno.h>
-#include <fcntl.h>
+#include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <sys/statvfs.h>
+#include <sys/stat.h>
 #include <unistd.h>
 
 /* When we include libgen.h because we need dirname() we immediately
@@ -34,18 +34,16 @@
 #undef basename
 
 #include "alloc-util.h"
-#include "fd-util.h"
-#include "fileio.h"
 #include "fs-util.h"
 #include "log.h"
 #include "macro.h"
 #include "missing.h"
-#include "parse-util.h"
 #include "path-util.h"
+#include "extract-word.h"
+#include "time-util.h"
 #include "stat-util.h"
 #include "string-util.h"
 #include "strv.h"
-#include "util.h"
 
 bool path_is_absolute(const char *p) {
         return p[0] == '/';
diff --git a/src/basic/path-util.h b/src/basic/path-util.h
index 989e0f9004..84472d38c7 100644
--- a/src/basic/path-util.h
+++ b/src/basic/path-util.h
@@ -21,7 +21,9 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <alloca.h>
 #include <stdbool.h>
+#include <stddef.h>
 
 #include "macro.h"
 #include "time-util.h"
diff --git a/src/basic/prioq.c b/src/basic/prioq.c
index 7590698911..7d420d8a7b 100644
--- a/src/basic/prioq.c
+++ b/src/basic/prioq.c
@@ -29,9 +29,12 @@
  * The underlying algorithm used in this implementation is a Heap.
  */
 
+#include <errno.h>
+#include <stdlib.h>
+
 #include "alloc-util.h"
 #include "prioq.h"
-#include "util.h"
+#include "hashmap.h"
 
 struct prioq_item {
         void *data;
diff --git a/src/basic/prioq.h b/src/basic/prioq.h
index 1c044b135c..6a2451387c 100644
--- a/src/basic/prioq.h
+++ b/src/basic/prioq.h
@@ -21,7 +21,10 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <stdbool.h>
+
 #include "hashmap.h"
+#include "macro.h"
 
 typedef struct Prioq Prioq;
 
diff --git a/src/basic/proc-cmdline.c b/src/basic/proc-cmdline.c
index 4464573c5b..4e8eba10ab 100644
--- a/src/basic/proc-cmdline.c
+++ b/src/basic/proc-cmdline.c
@@ -19,6 +19,10 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <stdbool.h>
+#include <stddef.h>
+#include <string.h>
+
 #include "alloc-util.h"
 #include "extract-word.h"
 #include "fileio.h"
diff --git a/src/basic/process-util.c b/src/basic/process-util.c
index 7631928d5f..1d60811cbf 100644
--- a/src/basic/process-util.c
+++ b/src/basic/process-util.c
@@ -17,18 +17,21 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <assert.h>
 #include <ctype.h>
 #include <errno.h>
+#include <limits.h>
+#include <linux/oom.h>
 #include <sched.h>
 #include <signal.h>
 #include <stdbool.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include <sys/personality.h>
 #include <sys/prctl.h>
 #include <sys/types.h>
 #include <sys/wait.h>
+#include <syslog.h>
 #include <unistd.h>
 
 #include "alloc-util.h"
@@ -40,6 +43,8 @@
 #include "log.h"
 #include "process-util.h"
 #include "signal-util.h"
+#include "macro.h"
+#include "missing.h"
 #include "string-table.h"
 #include "string-util.h"
 #include "user-util.h"
diff --git a/src/basic/process-util.h b/src/basic/process-util.h
index fdc7e1bdef..f4c4437624 100644
--- a/src/basic/process-util.h
+++ b/src/basic/process-util.h
@@ -22,6 +22,7 @@
 #include <alloca.h>
 #include <signal.h>
 #include <stdbool.h>
+#include <stddef.h>
 #include <stdio.h>
 #include <string.h>
 #include <sys/types.h>
diff --git a/src/basic/random-util.c b/src/basic/random-util.c
index 2f5c16e2af..e1543da5a3 100644
--- a/src/basic/random-util.c
+++ b/src/basic/random-util.c
@@ -17,23 +17,24 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <elf.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <sys/time.h>
 #include <linux/random.h>
 #include <stdint.h>
+
 #ifdef HAVE_SYS_AUXV_H
 #include <sys/auxv.h>
 #endif
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <time.h>
 
 #include "fd-util.h"
 #include "io-util.h"
 #include "missing.h"
 #include "random-util.h"
 #include "time-util.h"
-#include "util.h"
 
 int dev_urandom(void *p, size_t n) {
         static int have_syscall = -1;
diff --git a/src/basic/random-util.h b/src/basic/random-util.h
index f7862c8c8b..3cee4c5014 100644
--- a/src/basic/random-util.h
+++ b/src/basic/random-util.h
@@ -19,6 +19,7 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <stddef.h>
 #include <stdint.h>
 
 int dev_urandom(void *p, size_t n);
diff --git a/src/basic/ratelimit.c b/src/basic/ratelimit.c
index 81fc9c19ff..ee0f8176b9 100644
--- a/src/basic/ratelimit.c
+++ b/src/basic/ratelimit.c
@@ -20,7 +20,10 @@
 ***/
 
 
+#include <sys/time.h>
+
 #include "ratelimit.h"
+#include "macro.h"
 
 /* Modelled after Linux' lib/ratelimit.c by Dave Young
  * <hidave.darkstar@gmail.com>, which is licensed GPLv2. */
diff --git a/src/basic/ratelimit.h b/src/basic/ratelimit.h
index 58efca7df1..98c81f6b9e 100644
--- a/src/basic/ratelimit.h
+++ b/src/basic/ratelimit.h
@@ -21,6 +21,9 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <stdbool.h>
+
+#include "time-util.h"
 #include "util.h"
 
 typedef struct RateLimit {
diff --git a/src/basic/replace-var.c b/src/basic/replace-var.c
index bf757cbc48..8c3279b376 100644
--- a/src/basic/replace-var.c
+++ b/src/basic/replace-var.c
@@ -19,13 +19,15 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <stddef.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include "alloc-util.h"
 #include "macro.h"
 #include "replace-var.h"
 #include "string-util.h"
-#include "util.h"
 
 /*
  * Generic infrastructure for replacing @FOO@ style variables in
diff --git a/src/basic/rlimit-util.c b/src/basic/rlimit-util.c
index 2627c813fc..2de965daa6 100644
--- a/src/basic/rlimit-util.c
+++ b/src/basic/rlimit-util.c
@@ -19,10 +19,13 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <sys/resource.h>
+
 #include "missing.h"
 #include "rlimit-util.h"
+#include "macro.h"
 #include "string-table.h"
-#include "util.h"
 
 int setrlimit_closest(int resource, const struct rlimit *rlim) {
         struct rlimit highest, fixed;
diff --git a/src/basic/rm-rf.c b/src/basic/rm-rf.c
index 8ec7dd75ee..0408e22777 100644
--- a/src/basic/rm-rf.c
+++ b/src/basic/rm-rf.c
@@ -19,14 +19,24 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
+#include <unistd.h>
+
 #include "btrfs-util.h"
 #include "fd-util.h"
 #include "mount-util.h"
 #include "path-util.h"
 #include "rm-rf.h"
+#include "log.h"
+#include "macro.h"
 #include "stat-util.h"
 #include "string-util.h"
-#include "util.h"
 
 int rm_rf_children(int fd, RemoveFlags flags, struct stat *root_dev) {
         _cleanup_closedir_ DIR *d = NULL;
diff --git a/src/basic/selinux-util.c b/src/basic/selinux-util.c
index 7e4ae33efe..9be8e2c76f 100644
--- a/src/basic/selinux-util.c
+++ b/src/basic/selinux-util.c
@@ -21,7 +21,12 @@
 
 #include <errno.h>
 #include <malloc.h>
+#include <stddef.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/time.h>
 #include <sys/un.h>
+#include <syslog.h>
 
 #ifdef HAVE_SELINUX
 #include <selinux/context.h>
@@ -32,7 +37,10 @@
 #include "alloc-util.h"
 #include "path-util.h"
 #include "selinux-util.h"
-#include "strv.h"
+#include "log.h"
+#include "macro.h"
+#include "time-util.h"
+#include "util.h"
 
 #ifdef HAVE_SELINUX
 DEFINE_TRIVIAL_CLEANUP_FUNC(security_context_t, freecon);
diff --git a/src/basic/selinux-util.h b/src/basic/selinux-util.h
index 95a2fcdbca..0111f4c858 100644
--- a/src/basic/selinux-util.h
+++ b/src/basic/selinux-util.h
@@ -23,6 +23,7 @@
 
 #include <stdbool.h>
 #include <sys/socket.h>
+#include <sys/types.h>
 
 #include "macro.h"
 
diff --git a/src/basic/sigbus.c b/src/basic/sigbus.c
index c535c89d52..fe2e2d1a28 100644
--- a/src/basic/sigbus.c
+++ b/src/basic/sigbus.c
@@ -19,7 +19,9 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
 #include <signal.h>
+#include <stddef.h>
 #include <sys/mman.h>
 
 #include "macro.h"
diff --git a/src/basic/signal-util.c b/src/basic/signal-util.c
index 8038bc891d..fd9258dfca 100644
--- a/src/basic/signal-util.c
+++ b/src/basic/signal-util.c
@@ -19,11 +19,15 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <stdarg.h>
+#include <stdio.h>
+
 #include "parse-util.h"
 #include "signal-util.h"
+#include "macro.h"
 #include "string-table.h"
 #include "string-util.h"
-#include "util.h"
 
 int reset_all_signal_handlers(void) {
         static const struct sigaction sa = {
diff --git a/src/basic/siphash24.c b/src/basic/siphash24.c
index 10fc56da69..65667b9859 100644
--- a/src/basic/siphash24.c
+++ b/src/basic/siphash24.c
@@ -18,9 +18,8 @@
 */
 
 #include "siphash24.h"
-#include "sparse-endian.h"
+#include "macro.h"
 #include "unaligned.h"
-#include "util.h"
 
 static inline uint64_t rotate_left(uint64_t x, uint8_t b) {
         assert(b < 64);
diff --git a/src/basic/siphash24.h b/src/basic/siphash24.h
index ba4f7d01b6..3f7e20362b 100644
--- a/src/basic/siphash24.h
+++ b/src/basic/siphash24.h
@@ -1,6 +1,8 @@
 #pragma once
 
 #include <inttypes.h>
+#include <stddef.h>
+#include <stdint.h>
 #include <sys/types.h>
 
 struct siphash {
diff --git a/src/basic/smack-util.c b/src/basic/smack-util.c
index fcc046098d..e8030c92f3 100644
--- a/src/basic/smack-util.c
+++ b/src/basic/smack-util.c
@@ -21,15 +21,20 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <string.h>
+#include <sys/stat.h>
 #include <sys/xattr.h>
+#include <unistd.h>
 
 #include "alloc-util.h"
 #include "fileio.h"
 #include "path-util.h"
 #include "process-util.h"
 #include "smack-util.h"
+#include "log.h"
+#include "macro.h"
 #include "string-table.h"
-#include "util.h"
 #include "xattr-util.h"
 
 #ifdef HAVE_SMACK
diff --git a/src/basic/smack-util.h b/src/basic/smack-util.h
index e756dc8c28..1d85b52a33 100644
--- a/src/basic/smack-util.h
+++ b/src/basic/smack-util.h
@@ -24,6 +24,7 @@
 ***/
 
 #include <stdbool.h>
+#include <sys/types.h>
 
 #include "macro.h"
 
diff --git a/src/basic/socket-label.c b/src/basic/socket-label.c
index e5d4efc719..2dc6c76752 100644
--- a/src/basic/socket-label.c
+++ b/src/basic/socket-label.c
@@ -20,9 +20,13 @@
 ***/
 
 #include <errno.h>
+#include <netinet/in.h>
+#include <stdbool.h>
 #include <stddef.h>
 #include <string.h>
+#include <sys/socket.h>
 #include <sys/stat.h>
+#include <sys/un.h>
 #include <unistd.h>
 
 #include "alloc-util.h"
@@ -32,7 +36,7 @@
 #include "mkdir.h"
 #include "selinux-util.h"
 #include "socket-util.h"
-#include "util.h"
+#include "log.h"
 
 int socket_address_listen(
                 const SocketAddress *a,
diff --git a/src/basic/socket-util.c b/src/basic/socket-util.c
index 1acab1ef95..240fb60212 100644
--- a/src/basic/socket-util.c
+++ b/src/basic/socket-util.c
@@ -21,13 +21,15 @@
 
 #include <arpa/inet.h>
 #include <errno.h>
+#include <limits.h>
 #include <net/if.h>
 #include <netdb.h>
 #include <netinet/ip.h>
 #include <stddef.h>
+#include <stdint.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
-#include <sys/types.h>
 #include <unistd.h>
 
 #include "alloc-util.h"
@@ -39,6 +41,7 @@
 #include "parse-util.h"
 #include "path-util.h"
 #include "socket-util.h"
+#include "log.h"
 #include "string-table.h"
 #include "string-util.h"
 #include "user-util.h"
diff --git a/src/basic/socket-util.h b/src/basic/socket-util.h
index 129ffa811c..f9c90e0e73 100644
--- a/src/basic/socket-util.h
+++ b/src/basic/socket-util.h
@@ -23,7 +23,10 @@
 
 #include <netinet/ether.h>
 #include <netinet/in.h>
+#include <stdbool.h>
+#include <stddef.h>
 #include <sys/socket.h>
+#include <sys/types.h>
 #include <sys/un.h>
 #include <linux/netlink.h>
 #include <linux/if_packet.h>
diff --git a/src/basic/stat-util.c b/src/basic/stat-util.c
index 3bc66b3be7..21a8fb77a1 100644
--- a/src/basic/stat-util.c
+++ b/src/basic/stat-util.c
@@ -19,7 +19,11 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <dirent.h>
+#include <errno.h>
 #include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
 #include <linux/magic.h>
 #include <sys/statvfs.h>
 #include <unistd.h>
diff --git a/src/basic/stat-util.h b/src/basic/stat-util.h
index fb92464274..8e031e6155 100644
--- a/src/basic/stat-util.h
+++ b/src/basic/stat-util.h
@@ -22,7 +22,9 @@
 ***/
 
 #include <stdbool.h>
+#include <stddef.h>
 #include <sys/stat.h>
+#include <sys/statfs.h>
 #include <sys/types.h>
 #include <sys/vfs.h>
 
diff --git a/src/basic/strbuf.c b/src/basic/strbuf.c
index f4f702a05a..c9984bef08 100644
--- a/src/basic/strbuf.c
+++ b/src/basic/strbuf.c
@@ -19,12 +19,12 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include "alloc-util.h"
 #include "strbuf.h"
-#include "util.h"
 
 /*
  * Strbuf stores given strings in a single continuous allocated memory
diff --git a/src/basic/strbuf.h b/src/basic/strbuf.h
index fbc4e5f2a1..69565f7e2c 100644
--- a/src/basic/strbuf.h
+++ b/src/basic/strbuf.h
@@ -21,7 +21,9 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <stddef.h>
 #include <stdint.h>
+#include <sys/types.h>
 
 struct strbuf {
         char *buf;
diff --git a/src/basic/string-table.c b/src/basic/string-table.c
index a860324fc9..07a6d785f8 100644
--- a/src/basic/string-table.c
+++ b/src/basic/string-table.c
@@ -19,6 +19,7 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include "string-util.h"
 #include "string-table.h"
 
 ssize_t string_table_lookup(const char * const *table, size_t len, const char *key) {
diff --git a/src/basic/string-table.h b/src/basic/string-table.h
index 51b6007214..2181a3a767 100644
--- a/src/basic/string-table.h
+++ b/src/basic/string-table.h
@@ -22,6 +22,7 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
 #include <stddef.h>
 #include <stdio.h>
 #include <string.h>
diff --git a/src/basic/string-util.c b/src/basic/string-util.c
index 6006767daa..8178c7093f 100644
--- a/src/basic/string-util.c
+++ b/src/basic/string-util.c
@@ -19,8 +19,15 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
 #include "alloc-util.h"
 #include "gunicode.h"
+#include "macro.h"
 #include "string-util.h"
 #include "utf8.h"
 #include "util.h"
diff --git a/src/basic/string-util.h b/src/basic/string-util.h
index 54f9d3058c..b59b9b5a71 100644
--- a/src/basic/string-util.h
+++ b/src/basic/string-util.h
@@ -21,7 +21,9 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <alloca.h>
 #include <stdbool.h>
+#include <stddef.h>
 #include <string.h>
 
 #include "macro.h"
diff --git a/src/basic/strv.c b/src/basic/strv.c
index 771781f9fc..0a3d15706f 100644
--- a/src/basic/strv.c
+++ b/src/basic/strv.c
@@ -20,12 +20,15 @@
 ***/
 
 #include <errno.h>
+#include <fnmatch.h>
 #include <stdarg.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include "alloc-util.h"
 #include "escape.h"
+#include "extract-word.h"
 #include "string-util.h"
 #include "strv.h"
 #include "util.h"
diff --git a/src/basic/strv.h b/src/basic/strv.h
index e66794fc34..d0dd08baf3 100644
--- a/src/basic/strv.h
+++ b/src/basic/strv.h
@@ -24,8 +24,11 @@
 #include <fnmatch.h>
 #include <stdarg.h>
 #include <stdbool.h>
+#include <stddef.h>
 
 #include "extract-word.h"
+#include "alloc-util.h"
+#include "macro.h"
 #include "util.h"
 
 char *strv_find(char **l, const char *name) _pure_;
diff --git a/src/basic/strxcpyx.c b/src/basic/strxcpyx.c
index 088ba53c29..c454171de1 100644
--- a/src/basic/strxcpyx.c
+++ b/src/basic/strxcpyx.c
@@ -25,6 +25,7 @@
  * Returns the * remaining size, and 0 if the string was truncated.
  */
 
+#include <stdarg.h>
 #include <stdio.h>
 #include <string.h>
 
diff --git a/src/basic/strxcpyx.h b/src/basic/strxcpyx.h
index ccc7e52f37..02e22e6294 100644
--- a/src/basic/strxcpyx.h
+++ b/src/basic/strxcpyx.h
@@ -22,6 +22,8 @@
 ***/
 
 
+#include <stddef.h>
+
 #include "macro.h"
 
 size_t strpcpy(char **dest, size_t size, const char *src);
diff --git a/src/basic/syslog-util.c b/src/basic/syslog-util.c
index 01577941a0..7dc2761b6f 100644
--- a/src/basic/syslog-util.c
+++ b/src/basic/syslog-util.c
@@ -19,10 +19,11 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <string.h>
 #include <syslog.h>
 
-#include "assert.h"
 #include "hexdecoct.h"
+#include "macro.h"
 #include "string-table.h"
 #include "syslog-util.h"
 
diff --git a/src/basic/terminal-util.c b/src/basic/terminal-util.c
index 3931b03bc2..68664a152f 100644
--- a/src/basic/terminal-util.c
+++ b/src/basic/terminal-util.c
@@ -17,18 +17,25 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <assert.h>
+#include <errno.h>
 #include <fcntl.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/inotify.h>
+#include <sys/socket.h>
+#include <sys/sysmacros.h>
+#include <sys/time.h>
 #include <linux/kd.h>
 #include <linux/tiocl.h>
 #include <linux/vt.h>
 #include <poll.h>
 #include <signal.h>
 #include <sys/ioctl.h>
-#include <sys/stat.h>
 #include <sys/types.h>
 #include <termios.h>
-#include <time.h>
 #include <unistd.h>
 
 #include "alloc-util.h"
@@ -37,9 +44,10 @@
 #include "fs-util.h"
 #include "io-util.h"
 #include "parse-util.h"
-#include "path-util.h"
 #include "process-util.h"
 #include "socket-util.h"
+#include "log.h"
+#include "macro.h"
 #include "stat-util.h"
 #include "string-util.h"
 #include "terminal-util.h"
diff --git a/src/basic/terminal-util.h b/src/basic/terminal-util.h
index b2c7a297ae..597a0060ad 100644
--- a/src/basic/terminal-util.h
+++ b/src/basic/terminal-util.h
@@ -22,6 +22,7 @@
 #include <stdarg.h>
 #include <stdbool.h>
 #include <stdio.h>
+#include <sys/types.h>
 
 #include "macro.h"
 #include "time-util.h"
diff --git a/src/basic/time-util.c b/src/basic/time-util.c
index b9da6991da..a9296d6ee6 100644
--- a/src/basic/time-util.c
+++ b/src/basic/time-util.c
@@ -19,9 +19,16 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <limits.h>
+#include <stdlib.h>
 #include <string.h>
+#include <sys/stat.h>
+#include <sys/time.h>
 #include <sys/timerfd.h>
 #include <sys/timex.h>
+#include <sys/types.h>
+#include <unistd.h>
 
 #include "alloc-util.h"
 #include "fd-util.h"
@@ -29,10 +36,11 @@
 #include "fs-util.h"
 #include "parse-util.h"
 #include "path-util.h"
+#include "log.h"
+#include "macro.h"
 #include "string-util.h"
 #include "strv.h"
 #include "time-util.h"
-#include "util.h"
 
 usec_t now(clockid_t clock_id) {
         struct timespec ts;
diff --git a/src/basic/time-util.h b/src/basic/time-util.h
index 0417c29cdd..7321e3c670 100644
--- a/src/basic/time-util.h
+++ b/src/basic/time-util.h
@@ -22,6 +22,9 @@
 ***/
 
 #include <inttypes.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <time.h>
 
diff --git a/src/basic/unit-name.c b/src/basic/unit-name.c
index 9a55eacbfb..bdec97e54b 100644
--- a/src/basic/unit-name.c
+++ b/src/basic/unit-name.c
@@ -20,18 +20,20 @@
 ***/
 
 #include <errno.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include "alloc-util.h"
 #include "bus-label.h"
-#include "def.h"
 #include "hexdecoct.h"
 #include "path-util.h"
+#include "macro.h"
 #include "string-table.h"
 #include "string-util.h"
 #include "strv.h"
 #include "unit-name.h"
-#include "util.h"
 
 #define VALID_CHARS                             \
         DIGITS LETTERS                          \
diff --git a/src/basic/user-util.c b/src/basic/user-util.c
index 397880b0b1..55c64abdd9 100644
--- a/src/basic/user-util.c
+++ b/src/basic/user-util.c
@@ -19,17 +19,27 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <alloca.h>
+#include <errno.h>
+#include <fcntl.h>
 #include <grp.h>
 #include <pwd.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
 
 #include "alloc-util.h"
 #include "fd-util.h"
 #include "macro.h"
 #include "parse-util.h"
 #include "path-util.h"
+#include "formats-util.h"
 #include "string-util.h"
 #include "user-util.h"
-#include "util.h"
 
 bool uid_is_valid(uid_t uid) {
 
diff --git a/src/basic/utf8.c b/src/basic/utf8.c
index b4063a4cec..124effd6df 100644
--- a/src/basic/utf8.c
+++ b/src/basic/utf8.c
@@ -44,15 +44,14 @@
  */
 
 #include <errno.h>
-#include <inttypes.h>
 #include <stdbool.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include "alloc-util.h"
 #include "hexdecoct.h"
+#include "macro.h"
 #include "utf8.h"
-#include "util.h"
 
 bool unichar_is_valid(uint32_t ch) {
 
diff --git a/src/basic/utf8.h b/src/basic/utf8.h
index e745649f06..16c4b5b55d 100644
--- a/src/basic/utf8.h
+++ b/src/basic/utf8.h
@@ -22,6 +22,8 @@
 ***/
 
 #include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
 
 #include "macro.h"
 
diff --git a/src/basic/util.c b/src/basic/util.c
index 58617b354a..6d264e0007 100644
--- a/src/basic/util.c
+++ b/src/basic/util.c
@@ -19,91 +19,46 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <ctype.h>
+#include <alloca.h>
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
-#include <grp.h>
-#include <langinfo.h>
-#include <libintl.h>
-#include <limits.h>
-#include <linux/magic.h>
-#include <linux/oom.h>
-#include <linux/sched.h>
-#include <locale.h>
-#include <poll.h>
-#include <pwd.h>
 #include <sched.h>
 #include <signal.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <sys/file.h>
-#include <sys/ioctl.h>
 #include <sys/mman.h>
-#include <sys/mount.h>
-#include <sys/personality.h>
 #include <sys/prctl.h>
-#include <sys/stat.h>
-#include <sys/statvfs.h>
-#include <sys/time.h>
+#include <sys/statfs.h>
+#include <sys/sysmacros.h>
 #include <sys/types.h>
-#include <sys/utsname.h>
-#include <sys/vfs.h>
-#include <sys/wait.h>
-#include <syslog.h>
 #include <unistd.h>
 
-/* When we include libgen.h because we need dirname() we immediately
- * undefine basename() since libgen.h defines it as a macro to the
- * POSIX version which is really broken. We prefer GNU basename(). */
-#include <libgen.h>
-#undef basename
-
-#ifdef HAVE_SYS_AUXV_H
-#include <sys/auxv.h>
-#endif
-
-/* We include linux/fs.h as last of the system headers, as it
- * otherwise conflicts with sys/mount.h. Yay, Linux is great! */
-#include <linux/fs.h>
-
 #include "alloc-util.h"
 #include "build.h"
 #include "def.h"
-#include "device-nodes.h"
 #include "dirent-util.h"
-#include "env-util.h"
-#include "escape.h"
-#include "exit-status.h"
 #include "fd-util.h"
 #include "fileio.h"
 #include "formats-util.h"
-#include "gunicode.h"
 #include "hashmap.h"
-#include "hexdecoct.h"
 #include "hostname-util.h"
-#include "ioprio.h"
 #include "log.h"
 #include "macro.h"
 #include "missing.h"
-#include "mkdir.h"
 #include "parse-util.h"
 #include "path-util.h"
 #include "process-util.h"
-#include "random-util.h"
 #include "signal-util.h"
-#include "sparse-endian.h"
+#include "set.h"
+#include "time-util.h"
 #include "stat-util.h"
-#include "string-table.h"
 #include "string-util.h"
 #include "strv.h"
-#include "terminal-util.h"
 #include "user-util.h"
-#include "utf8.h"
 #include "util.h"
-#include "virt.h"
 
 /* Put this test here for a lack of better place */
 assert_cc(EAGAIN == EWOULDBLOCK);
diff --git a/src/basic/util.h b/src/basic/util.h
index d9d2f72b75..76a06822b7 100644
--- a/src/basic/util.h
+++ b/src/basic/util.h
@@ -22,6 +22,7 @@
 ***/
 
 #include <alloca.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>
 #include <limits.h>
@@ -29,8 +30,10 @@
 #include <stdarg.h>
 #include <stdbool.h>
 #include <stddef.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <sys/inotify.h>
 #include <sys/socket.h>
 #include <sys/stat.h>
diff --git a/src/basic/verbs.c b/src/basic/verbs.c
index d63062d39e..7feb47c48e 100644
--- a/src/basic/verbs.c
+++ b/src/basic/verbs.c
@@ -19,8 +19,14 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <getopt.h>
+#include <stdbool.h>
+#include <stddef.h>
+
+#include "log.h"
+#include "macro.h"
 #include "string-util.h"
-#include "util.h"
 #include "verbs.h"
 
 int dispatch_verb(int argc, char *argv[], const Verb verbs[], void *userdata) {
diff --git a/src/basic/virt.c b/src/basic/virt.c
index b82680a54b..eb67949166 100644
--- a/src/basic/virt.c
+++ b/src/basic/virt.c
@@ -20,18 +20,18 @@
 ***/
 
 #include <errno.h>
+#include <stdint.h>
+#include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 
 #include "alloc-util.h"
-#include "dirent-util.h"
-#include "fd-util.h"
 #include "fileio.h"
 #include "process-util.h"
+#include "macro.h"
 #include "stat-util.h"
 #include "string-table.h"
 #include "string-util.h"
-#include "util.h"
 #include "virt.h"
 
 static int detect_vm_cpuid(void) {
diff --git a/src/basic/xattr-util.c b/src/basic/xattr-util.c
index 6abdaedc3e..166e2b23fa 100644
--- a/src/basic/xattr-util.c
+++ b/src/basic/xattr-util.c
@@ -19,13 +19,20 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <fcntl.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/time.h>
 #include <sys/xattr.h>
 
 #include "alloc-util.h"
 #include "fd-util.h"
 #include "sparse-endian.h"
+#include "macro.h"
+#include "time-util.h"
 #include "stdio-util.h"
-#include "util.h"
 #include "xattr-util.h"
 
 int getxattr_malloc(const char *path, const char *name, char **value, bool allow_symlink) {
diff --git a/src/basic/xattr-util.h b/src/basic/xattr-util.h
index cf4cb12a25..a5134cba89 100644
--- a/src/basic/xattr-util.h
+++ b/src/basic/xattr-util.h
@@ -22,6 +22,7 @@
 ***/
 
 #include <stdbool.h>
+#include <stddef.h>
 #include <sys/types.h>
 
 #include "time-util.h"
diff --git a/src/basic/xml.c b/src/basic/xml.c
index 8126bce212..b9976cf5f1 100644
--- a/src/basic/xml.c
+++ b/src/basic/xml.c
@@ -19,10 +19,12 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
+#include <stddef.h>
 #include <string.h>
 
+#include "macro.h"
 #include "string-util.h"
-#include "util.h"
 #include "xml.h"
 
 enum {