newdisk.c revision 1.7
1 /* $NetBSD: newdisk.c,v 1.7 2011/04/29 05:59:53 isaki Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 Minoura Makoto 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Minoura Makoto. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Create the disk mark for x68k SCSI IPL. 35 * It used to be a shell/awk script, but is rewritten in order to be fit with 36 * the install kernel. 37 * 38 * Usage: /usr/mdec/newdisk [-vnfc] [-m /usr/mdec/mboot] /dev/rsd?c 39 */ 40 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <fcntl.h> 45 #include <unistd.h> 46 #include <util.h> 47 #include <sys/param.h> 48 #include <sys/disklabel.h> 49 #include <sys/dkio.h> 50 51 char *mboot = MBOOT; 52 char dev[MAXPATHLEN]; 53 char buf[4096 + 1]; 54 55 const char copyright[] = "NetBSD/x68k SCSI Primary Boot. "; 56 57 int verbose = 0, dry_run = 0, force = 0, check_only = 0, mark_only = 0; 58 59 void usage(void) __attribute__((__noreturn__)); 60 int main(int, char *[]); 61 62 void 63 usage(void) 64 { 65 fprintf(stderr, 66 "Usage: %s [-v] [-n] [-f] [-c] [-m /usr/mdec/mboot] " 67 "/dev/rsdXc\n", getprogname()); 68 exit(1); 69 /* NOTREACHED */ 70 } 71 72 int 73 main(int argc, char *argv[]) 74 { 75 int ch; 76 int fd; 77 struct disklabel label; 78 79 while ((ch = getopt(argc, argv, "vnfcm:p")) != -1) { 80 switch (ch) { 81 case 'v': 82 verbose = 1; 83 break; 84 case 'n': 85 dry_run = 1; 86 break; 87 case 'f': 88 force = 1; 89 break; 90 case 'c': 91 check_only = 1; 92 break; 93 case 'm': 94 mboot = optarg; 95 break; 96 case 'p': 97 mark_only = 1; 98 break; 99 default: 100 usage(); 101 } 102 } 103 argc -= optind; 104 argv += optind; 105 106 if (argc != 1) 107 usage(); 108 109 fd = opendisk(argv[0], O_RDONLY, dev, MAXPATHLEN, 0); 110 if (fd < 0) 111 err(1, "opening %s", dev); 112 if (access(mboot, R_OK) < 0) 113 err(1, "checking %s", mboot); 114 115 if (read(fd, buf, 512) < 0) 116 err(1, "reading %s", dev); 117 if (strncmp(buf, "X68SCSI1", 8) == 0 && !force) 118 errx(1, "%s is already marked. " 119 "Use -f to overwrite the existing mark."); 120 if (check_only) 121 return 0; 122 123 if (verbose) 124 fprintf(stderr, "Inspecting %s... ", dev); 125 126 if (ioctl(fd, DIOCGDINFO, &label) < 0) 127 err(1, "inspecting %s", dev); 128 close(fd); 129 if (label.d_secsize != 512) 130 errx(1, "This type of disk is not supported by NetBSD."); 131 132 if (verbose) 133 fprintf(stderr, "total number of sector is %d.\n", 134 label.d_secperunit); 135 136 if (verbose) 137 fprintf(stderr, "Building disk mark... "); 138 memset(buf, 0, 3072); 139 #define n label.d_secperunit 140 sprintf(buf, "X68SCSI1%c%c%c%c%c%c%c%c%s", 141 2, 0, 142 (n/16777216)%256, (n/65536)%256, (n/256)%256, n%256, 143 1, 0, copyright); 144 #undef n 145 if (verbose) 146 fprintf(stderr, "done.\n"); 147 148 if (verbose) 149 fprintf(stderr, "Merging %s... ", mboot); 150 fd = open(mboot, O_RDONLY); 151 if (fd < 0) 152 err(1, "opening %s", mboot); 153 if (read(fd, buf+1024, 1024) < 0) 154 err(1, "reading %s", mboot); 155 close(fd); 156 if (verbose) 157 fprintf(stderr, "done.\n"); 158 159 if (!mark_only) { 160 if (verbose) 161 fprintf(stderr, 162 "Creating an empty partition table... "); 163 #define n (label.d_secperunit/2) 164 sprintf(buf+2048, 165 "X68K%c%c%c%c%c%c%c%c%c%c%c%c", 166 0, 0, 0, 32, 167 (n/16777215)%256, (n/65536)%256, (n/256)%256, n%256, 168 (n/16777215)%256, (n/65536)%256, (n/256)%256, n%256); 169 #undef n 170 if (verbose) 171 fprintf(stderr, "done.\n"); 172 } 173 174 if (dry_run) { 175 char filename[MAXPATHLEN] = "/tmp/diskmarkXXXXX"; 176 fd = mkstemp(filename); 177 if (fd < 0) 178 err(1, "opening %s", filename); 179 if (write(fd, buf, 4096) < 0) 180 err(1, "writing %s", filename); 181 close(fd); 182 fprintf(stderr, "Disk mark is kept in %s.\n", filename); 183 } else { 184 int mode = 1; 185 186 if (verbose) 187 fprintf(stderr, "Writing... "); 188 fd = open(dev, O_WRONLY); 189 if (fd < 0) 190 err(1, "opening %s", dev); 191 if (ioctl(fd, DIOCWLABEL, (char *)&mode) < 0) 192 err(1, "DIOCWLABEL %s", dev); 193 if (write(fd, buf, 4096) != 4096) { 194 mode = 0; 195 ioctl(fd, DIOCWLABEL, (char *)&mode); 196 err(1, "DIOCWLABEL %s", dev); 197 } 198 ioctl(fd, DIOCWLABEL, (char *)&mode); 199 if (verbose) 200 fprintf(stderr, "done.\n"); 201 close(fd); 202 } 203 204 return 0; 205 } 206
Indexes created Fri Oct 03 17:10:05 GMT 2025