1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2018 Ian Lepore <ian@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #include <stand.h> 31 #include <bootstrap.h> 32 #include <sys/param.h> 33 #include <sys/linker.h> 34 #include "geliboot.h" 35 36 /* 37 * Export a keybuf as metadata attached to a kernel module. This is separate 38 * from the lower-level key management functions to avoid creating a linker 39 * dependency on the libsa metadata routines when the geli code is linked into 40 * early-stage bootloaders such as gptboot. Only loader(8) variants call this. 41 */ 42 void 43 geli_export_key_metadata(struct preloaded_file *kfp) 44 { 45 struct keybuf *keybuf; 46 47 keybuf = malloc(GELI_KEYBUF_SIZE); 48 geli_export_key_buffer(keybuf); 49 file_addmetadata(kfp, MODINFOMD_KEYBUF, GELI_KEYBUF_SIZE, keybuf); 50 explicit_bzero(keybuf, GELI_KEYBUF_SIZE); 51 free(keybuf); 52 } 53