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 28 #include <crypto/intake.h> 29 30 #ifndef _GELIBOOT_H_ 31 #define _GELIBOOT_H_ 32 33 #include <geom/eli/g_eli.h> 34 35 #ifndef DEV_BSIZE 36 #define DEV_BSIZE 512 37 #endif 38 #ifndef DEV_GELIBOOT_BSIZE 39 #define DEV_GELIBOOT_BSIZE 4096 40 #endif 41 42 #ifndef MIN 43 #define MIN(a,b) (((a) < (b)) ? (a) : (b)) 44 #endif 45 46 #define GELI_MAX_KEYS 64 47 #define GELI_PW_MAXLEN 256 48 #define GELI_KEYBUF_SIZE (sizeof(struct keybuf) + \ 49 (GELI_MAX_KEYS * sizeof(struct keybuf_ent))) 50 51 typedef enum geli_op { 52 GELI_DECRYPT, 53 GELI_ENCRYPT 54 } geli_op_t; 55 56 extern void pwgets(char *buf, int n, int hide); 57 58 typedef u_char geli_ukey[G_ELI_USERKEYLEN]; 59 60 /* 61 * An opaque struct used internally by geliboot functions. Returned by 62 * geli_taste(), a pointer to one of these is essentially a device handle. There 63 * is no need to release or free or "give back" the pointer. 64 */ 65 struct geli_dev; 66 67 /* Forward decls. */ 68 struct open_file; 69 struct preloaded_file; 70 71 /* 72 * Low-level interface, used by early-stage bootloaders... 73 */ 74 75 /* Read callback function type for geli_taste(). */ 76 typedef int (*geli_readfunc)(void *vdev, void *readpriv, off_t offbytes, 77 void *buf, size_t sizebytes); 78 79 struct geli_dev *geli_taste(geli_readfunc readfunc, void *readpriv, 80 daddr_t lastsector, const char *namefmt, ...); 81 int geli_io(struct geli_dev *gdev, geli_op_t, off_t offset, u_char *buf, 82 size_t bytes); 83 int geli_havekey(struct geli_dev *gdev); 84 int geli_passphrase(struct geli_dev *gdev, char *pw); 85 86 /* 87 * Libsa device-and-file-level interface. 88 */ 89 void geli_probe_and_attach(struct open_file *f); 90 91 /* 92 * Manage key data. 93 */ 94 void geli_add_key(geli_ukey key); 95 void geli_import_key_buffer(struct keybuf *keybuf); 96 void geli_export_key_buffer(struct keybuf *keybuf); 97 void geli_export_key_metadata(struct preloaded_file *kfp); 98 99 #endif /* _GELIBOOT_H_ */ 100