1 /* $NetBSD: dkscan_util.c,v 1.1 2007/03/01 22:01:30 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 40 #include <stdio.h> 41 #include <unistd.h> 42 #include <errno.h> 43 #include <stdarg.h> 44 #include <err.h> 45 #include <sys/param.h> 46 #include <sys/proc.h> 47 #include <sys/disk.h> 48 #include <sys/disklabel.h> 49 50 #include "dkscan_util.h" 51 52 int verbose = 0; /* are we verbose? */ 53 int no_action = 0; /* don't do anything, just print info */ 54 int disk_fd = -1; /* file descriptor for disk access */ 55 56 57 u_int 58 dkcksum(struct disklabel *lp) 59 { 60 return dkcksum_sized(lp, lp->d_npartitions); 61 } 62 63 u_int 64 dkcksum_sized(struct disklabel *lp, size_t npartitions) 65 { 66 u_short *start, *end; 67 u_short sum = 0; 68 69 start = (u_short *)lp; 70 end = (u_short *)&lp->d_partitions[npartitions]; 71 while (start < end) 72 sum ^= *start++; 73 return (sum); 74 } 75 76 int 77 dkwedge_read(struct disk *pdk, struct vnode *vp, daddr_t blkno, 78 void *tbuf, size_t len) 79 { 80 if (pread(disk_fd, tbuf, len, blkno * BLOCK_SIZE) < 0) 81 return errno; 82 return 0; 83 } 84 85 int 86 dkwedge_add(struct dkwedge_info *dkw) 87 { 88 printf("wedge \"%s\" type \"%s\" start %" PRIu64 " size %" PRIu64, 89 dkw->dkw_wname, dkw->dkw_ptype, dkw->dkw_offset, dkw->dkw_size); 90 91 if (no_action) { 92 printf("\n"); 93 return 0; 94 } 95 96 if (ioctl(disk_fd, DIOCAWEDGE, dkw) == -1) 97 err(1, "addwedge"); 98 99 printf(": %s\n", dkw->dkw_devname); 100 return 0; 101 } 102 103 void 104 aprint_error(const char *format, ...) 105 { 106 va_list ap; 107 108 va_start(ap, format); 109 vfprintf(stderr, format, ap); 110 va_end(ap); 111 } 112 113 void 114 aprint_verbose(const char *format, ...) 115 { 116 va_list ap; 117 118 if (!verbose) return; 119 120 va_start(ap, format); 121 vfprintf(stdout, format, ap); 122 va_end(ap); 123 } 124 125