diff -ru fuse-2.9.3/util/ulockmgr_server.c src/util/ulockmgr_server.c
--- fuse-2.9.3/util/ulockmgr_server.c	2013-07-01 09:25:36.000000000 +0200
+++ src/util/ulockmgr_server.c	2021-08-23 17:37:33.755426971 +0200
@@ -124,7 +124,7 @@
 	return res;
 }
 
-static int closefrom(int minfd)
+static int fuse_closefrom(int minfd)
 {
 	DIR *dir = opendir("/proc/self/fd");
 	if (dir) {
@@ -384,7 +384,7 @@
 		dup2(nullfd, 1);
 	}
 	close(3);
-	closefrom(5);
+	fuse_closefrom(5);
 	while (1) {
 		char c;
 		int sock;