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
82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
/*-
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* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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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 AUTHOR 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 AUTHOR 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 <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stand.h>
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#include <string.h>
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#include "bootstrap.h"
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#ifdef LOADER_GELI_SUPPORT
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#include "geliboot.h"
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#endif
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int
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devopen(struct open_file *f, const char *fname, const char **file)
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{
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struct devdesc *dev;
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int result;
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result = archsw.arch_getdev((void **)&dev, fname, file);
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if (result)
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return (result);
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/* point to device-specific data so that device open can use it */
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f->f_dev = dev->d_dev;
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f->f_devdata = dev;
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result = dev->d_dev->dv_open(f, dev);
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if (result != 0) {
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f->f_devdata = NULL;
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free(dev);
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return (result);
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}
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#ifdef LOADER_GELI_SUPPORT
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/*
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* If f->f_dev is geli-encrypted and we can decrypt it (will prompt for
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* pw if needed), this will attach the geli code to the open_file by
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* replacing f->f_dev and f_devdata with pointers to a geli_devdesc.
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*/
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if (f->f_dev->dv_type == DEVT_DISK) {
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geli_probe_and_attach(f);
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}
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#endif
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return (0);
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}
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int
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devclose(struct open_file *f)
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{
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if (f->f_devdata != NULL) {
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free(f->f_devdata);
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}
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return (0);
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}
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