c1418270b2
This moves the bulk of the geli support from lib386/biosdisk.c into a new geli/gelidev.c which implements a devsw-type device whose dv_strategy() function handles geli decryption. Support for all arches comes from moving the taste-and-attach code to the devopen() function in libsa. After opening any DEVT_DISK device, devopen() calls the new function geli_probe_and_attach(), which will "attach" the geli code to the open_file struct by creating a geli_devdesc instance to replace the disk_devdesc instance in the open_file. That routes all IO for the device through the geli code. A new public geli_add_key() function is added, to allow arch/vendor-specific code to add keys obtained from custom hardware or other sources. With these changes, geli support will be compiled into all variations of loader(8) on all arches because the default is WITH_LOADER_GELI. Relnotes: yes Sponsored by: Microchip Technology Inc Differential Revision: https://reviews.freebsd.org/D15743
96 lines
3.1 KiB
C
96 lines
3.1 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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* $FreeBSD$
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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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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_read(struct geli_dev *gdev, off_t offset, u_char *buf, 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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