214                 _cleanup_close_ int lock_fd = -1;  in pick_uid()  local
268 …                     lock_fd = open(lock_path, O_CREAT|O_RDWR|O_NOFOLLOW|O_CLOEXEC|O_NOCTTY, 0600);  in pick_uid()
269                         if (lock_fd < 0)  in pick_uid()
272 …         r = flock(lock_fd, LOCK_EX|LOCK_NB); /* Try to get a BSD file lock on the UID lock file */  in pick_uid()
280                         if (fstat(lock_fd, &st) < 0)  in pick_uid()
287                         lock_fd = safe_close(lock_fd);  in pick_uid()
299                 l = pwritev(lock_fd,  in pick_uid()
310                 (void) ftruncate(lock_fd, l);  in pick_uid()
314                 return TAKE_FD(lock_fd);  in pick_uid()
324         int lock_fd;  in dynamic_user_pop()  local
334         k = receive_one_fd_iov(d->storage_socket[0], &iov, 1, MSG_DONTWAIT, &lock_fd);  in dynamic_user_pop()
339         *ret_lock_fd = lock_fd;  in dynamic_user_pop()
344 static int dynamic_user_push(DynamicUser *d, uid_t uid, int lock_fd) {  in dynamic_user_push()  argument
350         return send_one_fd_iov(d->storage_socket[1], lock_fd, &iov, 1, MSG_DONTWAIT);  in dynamic_user_push()
353 static void unlink_uid_lock(int lock_fd, uid_t uid, const char *name) {  in unlink_uid_lock()  argument
356         if (lock_fd < 0)  in unlink_uid_lock()
528         _cleanup_close_ int lock_fd = -1;  in dynamic_user_current()  local
540         r = dynamic_user_pop(d, &uid, &lock_fd);  in dynamic_user_current()
544         r = dynamic_user_push(d, uid, lock_fd);  in dynamic_user_current()
570         _cleanup_close_ int lock_fd = -1;  in dynamic_user_close()  local
581         r = dynamic_user_pop(d, &uid, &lock_fd);  in dynamic_user_close()
589         unlink_uid_lock(lock_fd, uid, d->name);  in dynamic_user_close()