1 /*- 2 * Copyright (c) 2015 Allan Jude <allanjude@FreeBSD.org> 3 * Copyright (c) 2005-2011 Pawel Jakub Dawidek <pawel@dawidek.net> 4 * All rights reserved. 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 <crypto/intake.h> 31 32 #ifndef _GELIBOOT_H_ 33 #define _GELIBOOT_H_ 34 35 #include <geom/eli/g_eli.h> 36 37 #ifndef DEV_BSIZE 38 #define DEV_BSIZE 512 39 #endif 40 #ifndef DEV_GELIBOOT_BSIZE 41 #define DEV_GELIBOOT_BSIZE 4096 42 #endif 43 44 #ifndef MIN 45 #define MIN(a,b) (((a) < (b)) ? (a) : (b)) 46 #endif 47 48 #define GELI_MAX_KEYS 64 49 #define GELI_PW_MAXLEN 256 50 #define GELI_KEYBUF_SIZE (sizeof(struct keybuf) + \ 51 (GELI_MAX_KEYS * sizeof(struct keybuf_ent))) 52 53 extern void pwgets(char *buf, int n, int hide); 54 55 typedef u_char geli_ukey[G_ELI_USERKEYLEN]; 56 57 /* 58 * An opaque struct used internally by geliboot functions. Returned by 59 * geli_taste(), a pointer to one of these is essentially a device handle. There 60 * is no need to release or free or "give back" the pointer. 61 */ 62 struct geli_dev; 63 64 /* Forward decls. */ 65 struct open_file; 66 struct preloaded_file; 67 68 /* 69 * Low-level interface, used by early-stage bootloaders... 70 */ 71 72 /* Read callback function type for geli_taste(). */ 73 typedef int (*geli_readfunc)(void *vdev, void *readpriv, off_t offbytes, 74 void *buf, size_t sizebytes); 75 76 struct geli_dev * geli_taste(geli_readfunc readfunc, void *readpriv, 77 daddr_t lastsector, const char *namefmt, ...); 78 int geli_read(struct geli_dev *gdev, off_t offset, u_char *buf, size_t bytes); 79 int geli_havekey(struct geli_dev *gdev); 80 int geli_passphrase(struct geli_dev *gdev, char *pw); 81 82 /* 83 * Libsa device-and-file-level interface. 84 */ 85 void geli_probe_and_attach(struct open_file *f); 86 87 /* 88 * Manage key data. 89 */ 90 void geli_add_key(geli_ukey key); 91 void geli_import_key_buffer(struct keybuf *keybuf); 92 void geli_export_key_buffer(struct keybuf *keybuf); 93 void geli_export_key_metadata(struct preloaded_file *kfp); 94 95 #endif /* _GELIBOOT_H_ */ 96