sysdeps/managarm: Make sys_name_to_handle_at return EOPNOTSUPP

Author: Dennisbonke

sysdeps/managarm/generic/file.cpp

@@ -3162,8 +3162,8 @@ int sys_lgetxattr(const char *, const char *, void *, size_t, ssize_t *) { retur
 
 int sys_setxattr(const char *, const char *, const void *, size_t, int) { return ENOSYS; }
 
-// We don't implement name_to_handle_at
-int sys_name_to_handle_at(int, const char *, struct file_handle *, int *, int) { return ENOSYS; }
+// We don't implement name_to_handle_at, EOPNOTSUPP will cause systemd to fall through to backup options
+int sys_name_to_handle_at(int, const char *, struct file_handle *, int *, int) { return EOPNOTSUPP; }
 
 int sys_setgroups(size_t size, const gid_t *list) {
 	SignalGuard sguard;