vnconfig.c revision 1.9
1 /* $NetBSD: vnconfig.c,v 1.9 1997/06/23 21:11:08 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 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 REGENTS OR CONTRIBUTORS BE 30 * 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 * Copyright (c) 1993 University of Utah. 41 * Copyright (c) 1990, 1993 42 * The Regents of the University of California. All rights reserved. 43 * 44 * This code is derived from software contributed to Berkeley by 45 * the Systems Programming Group of the University of Utah Computer 46 * Science Department. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. All advertising materials mentioning features or use of this software 57 * must display the following acknowledgement: 58 * This product includes software developed by the University of 59 * California, Berkeley and its contributors. 60 * 4. Neither the name of the University nor the names of its contributors 61 * may be used to endorse or promote products derived from this software 62 * without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 65 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 66 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 67 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 68 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 69 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 70 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 72 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 73 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 74 * SUCH DAMAGE. 75 * 76 * from: Utah $Hdr: vnconfig.c 1.1 93/12/15$ 77 * 78 * @(#)vnconfig.c 8.1 (Berkeley) 12/15/93 79 */ 80 81 #include <sys/param.h> 82 #include <sys/ioctl.h> 83 #include <sys/mount.h> 84 #include <sys/stat.h> 85 #include <sys/buf.h> 86 #include <sys/disklabel.h> 87 #include <sys/disk.h> 88 89 #include <dev/vndvar.h> 90 91 #include <err.h> 92 #include <errno.h> 93 #include <fcntl.h> 94 #include <stdio.h> 95 #include <stdlib.h> 96 #include <string.h> 97 98 #define VND_CONFIG 1 99 #define VND_UNCONFIG 2 100 101 int verbose = 0; 102 char *tabname; 103 104 char *rawdevice __P((char *)); 105 int getgeom __P((struct vndgeom *, char *)); 106 void usage __P((void)); 107 108 int 109 main(argc, argv) 110 int argc; 111 char *argv[]; 112 { 113 int ch, rv, action = VND_CONFIG; 114 115 while ((ch = getopt(argc, argv, "ct:uv")) != -1) { 116 switch (ch) { 117 case 'c': 118 action = VND_CONFIG; 119 break; 120 case 't': 121 tabname = optarg; 122 break; 123 case 'u': 124 action = VND_UNCONFIG; 125 break; 126 case 'v': 127 verbose = 1; 128 break; 129 default: 130 case '?': 131 usage(); 132 /* NOTREACHED */ 133 } 134 } 135 argc -= optind; 136 argv += optind; 137 138 if (action == VND_CONFIG) { 139 if ((argc < 2 || argc > 3) || 140 (argc == 3 && tabname != NULL)) 141 usage(); 142 rv = config(argv[0], argv[1], (argc == 3) ? argv[2] : NULL, 143 action); 144 } else { 145 if (argc != 1 || tabname != NULL) 146 usage(); 147 rv = config(argv[0], NULL, NULL, action); 148 } 149 exit(rv); 150 } 151 152 int 153 config(dev, file, geom, action) 154 char *dev, *file, *geom; 155 int action; 156 { 157 struct vnd_ioctl vndio; 158 struct disklabel *lp; 159 char *rdev; 160 int fd, rv; 161 162 rdev = rawdevice(dev); 163 fd = open(rdev, O_RDWR, 0666); 164 if (fd < 0) { 165 warn(rdev); 166 return (1); 167 } 168 169 memset(&vndio, 0, sizeof(vndio)); 170 171 vndio.vnd_file = file; 172 if (geom != NULL) { 173 rv = getgeom(&vndio.vnd_geom, geom); 174 vndio.vnd_flags = VNDIOF_HASGEOM; 175 } else if (tabname != NULL) { 176 lp = getdiskbyname(tabname); 177 if (lp == NULL) 178 errx(1, "unknown disk type: %s", tabname); 179 vndio.vnd_geom.vng_secsize = lp->d_secsize; 180 vndio.vnd_geom.vng_nsectors = lp->d_nsectors; 181 vndio.vnd_geom.vng_ntracks = lp->d_ntracks; 182 vndio.vnd_geom.vng_ncylinders = lp->d_ncylinders; 183 vndio.vnd_flags = VNDIOF_HASGEOM; 184 } 185 186 /* 187 * Clear (un-configure) the device 188 */ 189 if (action == VND_UNCONFIG) { 190 rv = ioctl(fd, VNDIOCCLR, &vndio); 191 if (rv) 192 warn("VNDIOCCLR"); 193 else if (verbose) 194 printf("%s: cleared\n", dev); 195 } 196 /* 197 * Configure the device 198 */ 199 if (action == VND_CONFIG) { 200 rv = ioctl(fd, VNDIOCSET, &vndio); 201 if (rv) 202 warn("VNDIOCSET"); 203 else if (verbose) { 204 printf("%s: %d bytes on %s", dev, vndio.vnd_size, 205 file); 206 if (vndio.vnd_flags & VNDIOF_HASGEOM) 207 printf(" using geometry %d/%d/%d/%d", 208 vndio.vnd_geom.vng_secsize, 209 vndio.vnd_geom.vng_nsectors, 210 vndio.vnd_geom.vng_ntracks, 211 vndio.vnd_geom.vng_ncylinders); 212 printf("\n"); 213 } 214 215 } 216 done: 217 (void) close(fd); 218 fflush(stdout); 219 return (rv < 0); 220 } 221 222 int 223 getgeom(vng, cp) 224 struct vndgeom *vng; 225 char *cp; 226 { 227 char *secsize, *nsectors, *ntracks, *ncylinders; 228 229 #define GETARG(arg) \ 230 do { \ 231 if (*cp == '\0') \ 232 return (1); \ 233 arg = strsep(&cp, "/"); \ 234 if (arg == NULL) \ 235 return (1); \ 236 } while (0) 237 238 GETARG(secsize); 239 GETARG(nsectors); 240 GETARG(ntracks); 241 GETARG(ncylinders); 242 243 #undef GETARG 244 245 /* Too many? */ 246 if (cp != NULL) 247 return (1); 248 249 #define CVTARG(str, num) \ 250 do { \ 251 num = strtol(str, &cp, 10); \ 252 if (*cp != '\0') \ 253 return (1); \ 254 } while (0) 255 256 CVTARG(secsize, vng->vng_secsize); 257 CVTARG(nsectors, vng->vng_nsectors); 258 CVTARG(ntracks, vng->vng_ntracks); 259 CVTARG(ncylinders, vng->vng_ncylinders); 260 261 #undef CVTARG 262 263 return (0); 264 } 265 266 char * 267 rawdevice(dev) 268 char *dev; 269 { 270 register char *rawbuf, *dp, *ep; 271 struct stat sb; 272 int len; 273 274 len = strlen(dev); 275 rawbuf = malloc(len + 2); 276 strcpy(rawbuf, dev); 277 if (stat(rawbuf, &sb) != 0 || !S_ISCHR(sb.st_mode)) { 278 dp = rindex(rawbuf, '/'); 279 if (dp) { 280 for (ep = &rawbuf[len]; ep > dp; --ep) 281 *(ep+1) = *ep; 282 *++ep = 'r'; 283 } 284 } 285 return (rawbuf); 286 } 287 288 void 289 usage() 290 { 291 292 (void)fprintf(stderr, "%s%s", 293 "usage: vnconfig [-c] [-t typename] [-v] special-file" 294 " regular-file [geomspec]\n", 295 " vnconfig -u [-v] special-file\n"); 296 exit(1); 297 } 298
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