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100 lines
3.2 KiB
C
100 lines
3.2 KiB
C
/*-
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* Copyright (c) 2015 Allan Jude <allanjude@FreeBSD.org>
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* Copyright (c) 2005-2011 Pawel Jakub Dawidek <pawel@dawidek.net>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <crypto/intake.h>
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#ifndef _GELIBOOT_H_
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#define _GELIBOOT_H_
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#include <geom/eli/g_eli.h>
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#ifndef DEV_BSIZE
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#define DEV_BSIZE 512
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#endif
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#ifndef DEV_GELIBOOT_BSIZE
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#define DEV_GELIBOOT_BSIZE 4096
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#endif
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#ifndef MIN
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#define MIN(a,b) (((a) < (b)) ? (a) : (b))
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#endif
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#define GELI_MAX_KEYS 64
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#define GELI_PW_MAXLEN 256
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#define GELI_KEYBUF_SIZE (sizeof(struct keybuf) + \
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(GELI_MAX_KEYS * sizeof(struct keybuf_ent)))
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typedef enum geli_op {
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GELI_DECRYPT,
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GELI_ENCRYPT
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} geli_op_t;
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extern void pwgets(char *buf, int n, int hide);
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typedef u_char geli_ukey[G_ELI_USERKEYLEN];
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/*
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* An opaque struct used internally by geliboot functions. Returned by
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* geli_taste(), a pointer to one of these is essentially a device handle. There
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* is no need to release or free or "give back" the pointer.
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*/
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struct geli_dev;
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/* Forward decls. */
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struct open_file;
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struct preloaded_file;
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/*
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* Low-level interface, used by early-stage bootloaders...
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*/
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/* Read callback function type for geli_taste(). */
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typedef int (*geli_readfunc)(void *vdev, void *readpriv, off_t offbytes,
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void *buf, size_t sizebytes);
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struct geli_dev *geli_taste(geli_readfunc readfunc, void *readpriv,
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daddr_t lastsector, const char *namefmt, ...);
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int geli_io(struct geli_dev *gdev, geli_op_t, off_t offset, u_char *buf,
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size_t bytes);
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int geli_havekey(struct geli_dev *gdev);
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int geli_passphrase(struct geli_dev *gdev, char *pw);
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/*
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* Libsa device-and-file-level interface.
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*/
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void geli_probe_and_attach(struct open_file *f);
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/*
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* Manage key data.
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*/
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void geli_add_key(geli_ukey key);
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void geli_import_key_buffer(struct keybuf *keybuf);
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void geli_export_key_buffer(struct keybuf *keybuf);
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void geli_export_key_metadata(struct preloaded_file *kfp);
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#endif /* _GELIBOOT_H_ */
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