1 /* $NetBSD: dkscan_util.c,v 1.2 2008/04/28 20:23:08 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Martin Husemann <martin@NetBSD.org>. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 33 #include <stdio.h> 34 #include <unistd.h> 35 #include <errno.h> 36 #include <stdarg.h> 37 #include <err.h> 38 #include <sys/param.h> 39 #include <sys/proc.h> 40 #include <sys/disk.h> 41 #include <sys/disklabel.h> 42 43 #include "dkscan_util.h" 44 45 int verbose = 0; /* are we verbose? */ 46 int no_action = 0; /* don't do anything, just print info */ 47 int disk_fd = -1; /* file descriptor for disk access */ 48 49 50 u_int 51 dkcksum(struct disklabel *lp) 52 { 53 return dkcksum_sized(lp, lp->d_npartitions); 54 } 55 56 u_int 57 dkcksum_sized(struct disklabel *lp, size_t npartitions) 58 { 59 u_short *start, *end; 60 u_short sum = 0; 61 62 start = (u_short *)lp; 63 end = (u_short *)&lp->d_partitions[npartitions]; 64 while (start < end) 65 sum ^= *start++; 66 return (sum); 67 } 68 69 int 70 dkwedge_read(struct disk *pdk, struct vnode *vp, daddr_t blkno, 71 void *tbuf, size_t len) 72 { 73 if (pread(disk_fd, tbuf, len, blkno * BLOCK_SIZE) < 0) 74 return errno; 75 return 0; 76 } 77 78 int 79 dkwedge_add(struct dkwedge_info *dkw) 80 { 81 printf("wedge \"%s\" type \"%s\" start %" PRIu64 " size %" PRIu64, 82 dkw->dkw_wname, dkw->dkw_ptype, dkw->dkw_offset, dkw->dkw_size); 83 84 if (no_action) { 85 printf("\n"); 86 return 0; 87 } 88 89 if (ioctl(disk_fd, DIOCAWEDGE, dkw) == -1) 90 err(1, "addwedge"); 91 92 printf(": %s\n", dkw->dkw_devname); 93 return 0; 94 } 95 96 void 97 aprint_error(const char *format, ...) 98 { 99 va_list ap; 100 101 va_start(ap, format); 102 vfprintf(stderr, format, ap); 103 va_end(ap); 104 } 105 106 void 107 aprint_verbose(const char *format, ...) 108 { 109 va_list ap; 110 111 if (!verbose) return; 112 113 va_start(ap, format); 114 vfprintf(stdout, format, ap); 115 va_end(ap); 116 } 117 118