--- digsig.c	2004-09-09 17:43:51.342757952 -0500
+++ digsig.c.noexec	2004-09-09 17:43:43.569939600 -0500
@@ -556,6 +556,11 @@ int dsi_file_mmap(struct file * file, un
 		goto out_file_no_buf;
 	}
 
+	if (!(file->f_dentry->d_inode->i_mode & MAY_EXEC)) {
+		retval = -EPERM;
+		goto out_with_file;
+	}
+
 	retval = DIGSIG_MODE;
 
 	size = elf_ex->e_shnum * sizeof(Elf32_Shdr);