1 /* $NetBSD: dkscan_util.c,v 1.3 2013/01/01 18:44:27 dsl 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/ioctl.h> 40 #include <sys/proc.h> 41 #include <sys/disk.h> 42 #include <sys/disklabel.h> 43 44 #include "dkscan_util.h" 45 46 int verbose = 0; /* are we verbose? */ 47 int no_action = 0; /* don't do anything, just print info */ 48 int disk_fd = -1; /* file descriptor for disk access */ 49 50 51 u_int 52 dkcksum(struct disklabel *lp) 53 { 54 return dkcksum_sized(lp, lp->d_npartitions); 55 } 56 57 u_int 58 dkcksum_sized(struct disklabel *lp, size_t npartitions) 59 { 60 u_short *start, *end; 61 u_short sum = 0; 62 63 start = (u_short *)lp; 64 end = (u_short *)&lp->d_partitions[npartitions]; 65 while (start < end) 66 sum ^= *start++; 67 return (sum); 68 } 69 70 int 71 dkwedge_read(struct disk *pdk, struct vnode *vp, daddr_t blkno, 72 void *tbuf, size_t len) 73 { 74 if (pread(disk_fd, tbuf, len, blkno * BLOCK_SIZE) < 0) 75 return errno; 76 return 0; 77 } 78 79 int 80 dkwedge_add(struct dkwedge_info *dkw) 81 { 82 printf("wedge \"%s\" type \"%s\" start %" PRIu64 " size %" PRIu64, 83 dkw->dkw_wname, dkw->dkw_ptype, dkw->dkw_offset, dkw->dkw_size); 84 85 if (no_action) { 86 printf("\n"); 87 return 0; 88 } 89 90 if (ioctl(disk_fd, DIOCAWEDGE, dkw) == -1) 91 err(1, "addwedge"); 92 93 printf(": %s\n", dkw->dkw_devname); 94 return 0; 95 } 96 97 void 98 aprint_error(const char *format, ...) 99 { 100 va_list ap; 101 102 va_start(ap, format); 103 vfprintf(stderr, format, ap); 104 va_end(ap); 105 } 106 107 void 108 aprint_verbose(const char *format, ...) 109 { 110 va_list ap; 111 112 if (!verbose) return; 113 114 va_start(ap, format); 115 vfprintf(stdout, format, ap); 116 va_end(ap); 117 } 118 119