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/* $OpenBSD: softraid.c,v 1.4 2015/10/03 16:56:52 krw Exp $ */ |
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/* |
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* Copyright (c) 2012 Joel Sing <jsing@openbsd.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <sys/dkio.h> |
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#include <sys/ioctl.h> |
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#include <dev/biovar.h> |
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#include <err.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include "installboot.h" |
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static int sr_volume(int, char *, int *, int *); |
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void |
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sr_installboot(int devfd, char *dev) |
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{ |
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int vol = -1, ndisks = 0, disk; |
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/* Use the normal process if this is not a softraid volume. */ |
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if (!sr_volume(devfd, dev, &vol, &ndisks)) { |
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md_installboot(devfd, dev); |
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return; |
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} |
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/* Install boot loader in softraid volume. */ |
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sr_install_bootldr(devfd, dev); |
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/* Install boot block on each disk that is part of this volume. */ |
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for (disk = 0; disk < ndisks; disk++) |
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sr_install_bootblk(devfd, vol, disk); |
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} |
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int |
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sr_volume(int devfd, char *dev, int *vol, int *disks) |
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{ |
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struct bioc_inq bi; |
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struct bioc_vol bv; |
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int i; |
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/* |
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* Determine if the given device is a softraid volume. |
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*/ |
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/* Get volume information. */ |
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memset(&bi, 0, sizeof(bi)); |
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if (ioctl(devfd, BIOCINQ, &bi) == -1) |
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return 0; |
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/* XXX - softraid volumes will always have a "softraid0" controller. */ |
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if (strncmp(bi.bi_dev, "softraid0", sizeof("softraid0"))) |
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return 0; |
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/* |
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* XXX - this only works with the real disk name (e.g. sd0) - this |
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* should be extracted from the device name, or better yet, fixed in |
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* the softraid ioctl. |
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*/ |
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/* Locate specific softraid volume. */ |
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for (i = 0; i < bi.bi_novol; i++) { |
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memset(&bv, 0, sizeof(bv)); |
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bv.bv_volid = i; |
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if (ioctl(devfd, BIOCVOL, &bv) == -1) |
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err(1, "BIOCVOL"); |
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if (strncmp(dev, bv.bv_dev, sizeof(bv.bv_dev)) == 0) { |
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*vol = i; |
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*disks = bv.bv_nodisk; |
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break; |
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} |
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} |
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if (verbose) |
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fprintf(stderr, "%s: softraid volume with %i disk(s)\n", |
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dev, *disks); |
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return 1; |
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} |