1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2001 Joerg Wunsch 5 * 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/types.h> 30 #include <sys/stat.h> 31 #include <sys/fdcio.h> 32 33 #include <err.h> 34 #include <errno.h> 35 #include <fcntl.h> 36 #include <paths.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <sysexits.h> 41 #include <unistd.h> 42 43 #include <dev/ic/nec765.h> 44 45 #include "fdutil.h" 46 47 static int quiet, recover; 48 static unsigned char fillbyte = 0xf0; /* "foo" */ 49 50 static int doread(int fd, FILE *of, const char *_devname); 51 static int doreadid(int fd, unsigned int numids, unsigned int trackno); 52 static void usage(void); 53 54 static void 55 usage(void) 56 { 57 58 errx(EX_USAGE, 59 "usage: fdread [-qr] [-d device] [-f fillbyte]\n" 60 " fdread [-d device] -I numids [-t trackno]"); 61 } 62 63 64 int 65 main(int argc, char **argv) 66 { 67 int c, errs = 0; 68 unsigned int numids = 0, trackno = 0; 69 const char *fname = 0, *_devname = "/dev/fd0"; 70 char *cp; 71 FILE *of = stdout; 72 int fd; 73 unsigned long ul; 74 75 while ((c = getopt(argc, argv, "d:f:I:o:qrt:")) != -1) 76 switch (c) { 77 case 'd': 78 _devname = optarg; 79 break; 80 81 case 'f': 82 ul = strtoul(optarg, &cp, 0); 83 if (*cp != '\0') { 84 fprintf(stderr, 85 "Bad argument %s to -f option; must be numeric\n", 86 optarg); 87 usage(); 88 } 89 if (ul > 0xff) 90 warnx( 91 "Warning: fillbyte %#lx too large, truncating\n", 92 ul); 93 fillbyte = ul & 0xff; 94 break; 95 96 case 'I': 97 ul = strtoul(optarg, &cp, 0); 98 if (*cp != '\0') { 99 fprintf(stderr, 100 "Bad argument %s to -I option; must be numeric\n", 101 optarg); 102 usage(); 103 } 104 numids = ul; 105 break; 106 107 case 'o': 108 fname = optarg; 109 break; 110 111 case 'q': 112 quiet++; 113 break; 114 115 case 'r': 116 recover++; 117 break; 118 119 case 't': 120 ul = strtoul(optarg, &cp, 0); 121 if (*cp != '\0') { 122 fprintf(stderr, 123 "Bad argument %s to -t option; must be numeric\n", 124 optarg); 125 usage(); 126 } 127 trackno = ul; 128 break; 129 130 default: 131 errs++; 132 } 133 argc -= optind; 134 argv += optind; 135 136 if (argc != 0 || errs) 137 usage(); 138 /* check for mutually exclusive options */ 139 if (numids) { 140 if (fname || quiet || recover) 141 usage(); 142 } else { 143 if (trackno) 144 usage(); 145 } 146 147 if (fname) { 148 if ((of = fopen(fname, "w")) == NULL) 149 err(EX_OSERR, "cannot create output file %s", fname); 150 } 151 152 if ((fd = open(_devname, O_RDONLY)) == -1) 153 err(EX_OSERR, "cannot open device %s", _devname); 154 155 return (numids? doreadid(fd, numids, trackno): doread(fd, of, _devname)); 156 } 157 158 static int 159 doread(int fd, FILE *of, const char *_devname) 160 { 161 char *trackbuf; 162 int rv, fdopts, recoverable, nerrs = 0; 163 unsigned int nbytes, tracksize, mediasize, secsize, n; 164 struct fdc_status fdcs; 165 struct fd_type fdt; 166 167 if (ioctl(fd, FD_GTYPE, &fdt) == -1) 168 err(EX_OSERR, "ioctl(FD_GTYPE) failed -- not a floppy?"); 169 170 secsize = 128 << fdt.secsize; 171 tracksize = fdt.sectrac * secsize; 172 mediasize = tracksize * fdt.tracks * fdt.heads; 173 if ((trackbuf = malloc(tracksize)) == NULL) 174 errx(EX_TEMPFAIL, "out of memory"); 175 176 if (!quiet) 177 fprintf(stderr, "Reading %d * %d * %d * %d medium at %s\n", 178 fdt.tracks, fdt.heads, fdt.sectrac, secsize, _devname); 179 180 for (nbytes = 0; nbytes < mediasize;) { 181 if (lseek(fd, nbytes, SEEK_SET) != nbytes) 182 err(EX_OSERR, "cannot lseek()"); 183 rv = read(fd, trackbuf, tracksize); 184 if (rv == 0) { 185 /* EOF? */ 186 warnx("premature EOF after %u bytes", nbytes); 187 free(trackbuf); 188 return (EX_OK); 189 } 190 if ((unsigned)rv == tracksize) { 191 nbytes += rv; 192 if (!quiet) 193 fprintf(stderr, "%5d KB\r", nbytes / 1024); 194 fwrite(trackbuf, sizeof(unsigned char), rv, of); 195 fflush(of); 196 continue; 197 } 198 if (rv == -1) { 199 /* fall back reading one sector at a time */ 200 for (n = 0; n < tracksize; n += secsize) { 201 if (lseek(fd, nbytes, SEEK_SET) != nbytes) 202 err(EX_OSERR, "cannot lseek()"); 203 rv = read(fd, trackbuf, secsize); 204 if ((unsigned) rv == secsize) { 205 nbytes += rv; 206 if (!quiet) 207 fprintf(stderr, "%5d KB\r", 208 nbytes / 1024); 209 fwrite(trackbuf, sizeof(unsigned char), 210 rv, of); 211 fflush(of); 212 continue; 213 } 214 if (rv == -1) { 215 if (errno != EIO) { 216 if (!quiet) 217 putc('\n', stderr); 218 perror("non-IO error"); 219 free(trackbuf); 220 return (EX_OSERR); 221 } 222 if (ioctl(fd, FD_GSTAT, &fdcs) == -1) 223 errx(EX_IOERR, 224 "floppy IO error, but no FDC status"); 225 nerrs++; 226 recoverable = fdcs.status[2] & 227 NE7_ST2_DD; 228 if (!quiet) { 229 printstatus(&fdcs, 0); 230 fputs(" (", stderr); 231 if (!recoverable) 232 fputs("not ", stderr); 233 fputs("recoverable)", stderr); 234 } 235 if (!recover) { 236 if (!quiet) 237 putc('\n', stderr); 238 free(trackbuf); 239 return (EX_IOERR); 240 } 241 memset(trackbuf, fillbyte, secsize); 242 if (recoverable) { 243 fdopts |= FDOPT_NOERROR; 244 if (ioctl(fd, FD_SOPTS, 245 &fdopts) == -1) 246 err(EX_OSERR, 247 "ioctl(fd, FD_SOPTS, FDOPT_NOERROR)"); 248 rv = read(fd, trackbuf, 249 secsize); 250 if ((unsigned)rv != secsize) 251 err(EX_IOERR, 252 "read() with FDOPT_NOERROR still fails"); 253 fdopts &= ~FDOPT_NOERROR; 254 (void)ioctl(fd, FD_SOPTS, 255 &fdopts); 256 } 257 if (!quiet) { 258 if (recoverable) 259 fprintf(stderr, 260 ": recovered"); 261 else 262 fprintf(stderr, 263 ": dummy"); 264 fprintf(stderr, 265 " data @ %#x ... %#x\n", 266 nbytes, 267 nbytes + secsize - 1); 268 } 269 nbytes += secsize; 270 fwrite(trackbuf, sizeof(unsigned char), 271 secsize, of); 272 fflush(of); 273 continue; 274 } 275 errx(EX_OSERR, "unexpected read() result: %d", 276 rv); 277 } 278 } 279 if ((unsigned)rv < tracksize) { 280 /* should not happen */ 281 nbytes += rv; 282 if (!quiet) 283 fprintf(stderr, "\nshort after %5d KB\r", 284 nbytes / 1024); 285 fwrite(trackbuf, sizeof(unsigned char), rv, of); 286 fflush(of); 287 continue; 288 } 289 } 290 free(trackbuf); 291 if (!quiet) { 292 putc('\n', stderr); 293 if (nerrs) 294 fprintf(stderr, "%d error%s\n", 295 nerrs, nerrs > 1? "s": ""); 296 } 297 298 return (nerrs? EX_IOERR: EX_OK); 299 } 300 301 static int 302 doreadid(int fd, unsigned int numids, unsigned int trackno) 303 { 304 int rv = 0; 305 unsigned int i; 306 struct fdc_readid info; 307 struct fdc_status fdcs; 308 struct fd_type fdt; 309 310 if (ioctl(fd, FD_GTYPE, &fdt) == -1) 311 err(EX_OSERR, "ioctl(FD_GTYPE) failed -- not a floppy?"); 312 313 for (i = 0; i < numids; i++) { 314 info.cyl = trackno / fdt.heads; 315 info.head = fdt.heads > 1? trackno % fdt.heads: 0; 316 if (ioctl(fd, FD_READID, &info) == 0) { 317 printf("C = %d, H = %d, R = %d, N = %d\n", 318 info.cyl, info.head, info.sec, info.secshift); 319 } else { 320 if (errno != EIO) { 321 perror("non-IO error"); 322 return (EX_OSERR); 323 } 324 if (ioctl(fd, FD_GSTAT, &fdcs) == -1) 325 errx(EX_IOERR, 326 "floppy IO error, but no FDC status"); 327 printstatus(&fdcs, 0); 328 putc('\n', stderr); 329 rv = EX_IOERR; 330 } 331 } 332 333 return (rv); 334 } 335