diff -uNr mktorrent-1.1/ftw.c mktorrent-1.1.mod/ftw.c
--- mktorrent-1.1/ftw.c	2017-01-11 23:13:16.000000000 +0200
+++ mktorrent-1.1.mod/ftw.c	2019-01-30 16:51:09.927683504 +0200
@@ -45,6 +45,20 @@
 	off_t offset;
 };
 
+struct DIR {
+	int fd_;
+};
+
+static long telldir_custom(struct DIR *dirp)
+{
+	return (long) lseek(dirp->fd_, 0, SEEK_CUR);
+}
+
+static void seekdir_custom(DIR *dirp, long loc)
+{
+	(void) lseek(dirp->fd_, loc, SEEK_SET);
+}
+
 static struct dir_state *dir_state_new(struct dir_state *prev,
 		struct dir_state *next)
 {
@@ -88,14 +102,14 @@
 
 	name[ds->length] = DIRSEP_CHAR;
 
-	seekdir(ds->dir, ds->offset);
+	seekdir_custom(ds->dir, ds->offset);
 
 	return 0;
 }
 
 static unsigned int dir_state_close(struct dir_state *ds)
 {
-	ds->offset = telldir(ds->dir);
+	ds->offset = telldir_custom(ds->dir);
 	if (ds->offset < 0) {
 		fprintf(stderr, "Error getting dir offset: %s\n",
 				strerror(errno));