119 lines
3.1 KiB
C
119 lines
3.1 KiB
C
/* $NetBSD: dkscan_util.c,v 1.3 2013/01/01 18:44:27 dsl Exp $ */
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/*-
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* Copyright (c) 2007 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Martin Husemann <martin@NetBSD.org>.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <err.h>
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/proc.h>
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#include <sys/disk.h>
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#include <sys/disklabel.h>
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#include "dkscan_util.h"
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int verbose = 0; /* are we verbose? */
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int no_action = 0; /* don't do anything, just print info */
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int disk_fd = -1; /* file descriptor for disk access */
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u_int
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dkcksum(struct disklabel *lp)
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{
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return dkcksum_sized(lp, lp->d_npartitions);
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}
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u_int
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dkcksum_sized(struct disklabel *lp, size_t npartitions)
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{
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u_short *start, *end;
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u_short sum = 0;
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start = (u_short *)lp;
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end = (u_short *)&lp->d_partitions[npartitions];
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while (start < end)
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sum ^= *start++;
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return (sum);
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}
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int
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dkwedge_read(struct disk *pdk, struct vnode *vp, daddr_t blkno,
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void *tbuf, size_t len)
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{
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if (pread(disk_fd, tbuf, len, blkno * BLOCK_SIZE) < 0)
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return errno;
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return 0;
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}
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int
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dkwedge_add(struct dkwedge_info *dkw)
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{
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printf("wedge \"%s\" type \"%s\" start %" PRIu64 " size %" PRIu64,
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dkw->dkw_wname, dkw->dkw_ptype, dkw->dkw_offset, dkw->dkw_size);
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if (no_action) {
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printf("\n");
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return 0;
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}
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if (ioctl(disk_fd, DIOCAWEDGE, dkw) == -1)
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err(1, "addwedge");
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printf(": %s\n", dkw->dkw_devname);
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return 0;
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}
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void
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aprint_error(const char *format, ...)
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{
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va_list ap;
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va_start(ap, format);
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vfprintf(stderr, format, ap);
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va_end(ap);
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}
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void
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aprint_verbose(const char *format, ...)
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{
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va_list ap;
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if (!verbose) return;
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va_start(ap, format);
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vfprintf(stdout, format, ap);
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va_end(ap);
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}
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