1 /* 2 * Copyright (c) 2001 Joerg Wunsch 3 * 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD$ 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 int quiet, recover; 48 unsigned char fillbyte = 0xf0; /* "foo" */ 49 50 int doread(int fd, FILE *of, const char *devname); 51 int doreadid(int fd, unsigned int numids, unsigned int trackno); 52 void usage(void); 53 54 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 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 fdopts = FDOPT_NOERRLOG; 170 if (ioctl(fd, FD_SOPTS, &fdopts) == -1) 171 err(EX_OSERR, "ioctl(FD_SOPTS, FDOPT_NOERRLOG)"); 172 173 secsize = 128 << fdt.secsize; 174 tracksize = fdt.sectrac * secsize; 175 mediasize = tracksize * fdt.tracks * fdt.heads; 176 if ((trackbuf = malloc(tracksize)) == 0) 177 errx(EX_TEMPFAIL, "out of memory"); 178 179 if (!quiet) 180 fprintf(stderr, "Reading %d * %d * %d * %d medium at %s\n", 181 fdt.tracks, fdt.heads, fdt.sectrac, secsize, devname); 182 183 for (nbytes = 0; nbytes < mediasize;) { 184 if (lseek(fd, nbytes, SEEK_SET) != nbytes) 185 err(EX_OSERR, "cannot lseek()"); 186 rv = read(fd, trackbuf, tracksize); 187 if (rv == 0) { 188 /* EOF? */ 189 warnx("premature EOF after %u bytes", nbytes); 190 return (EX_OK); 191 } 192 if (rv == tracksize) { 193 nbytes += rv; 194 if (!quiet) 195 fprintf(stderr, "%5d KB\r", nbytes / 1024); 196 fwrite(trackbuf, sizeof(unsigned char), rv, of); 197 fflush(of); 198 continue; 199 } 200 if (rv < tracksize) { 201 /* should not happen */ 202 nbytes += rv; 203 if (!quiet) 204 fprintf(stderr, "\nshort after %5d KB\r", 205 nbytes / 1024); 206 fwrite(trackbuf, sizeof(unsigned char), rv, of); 207 fflush(of); 208 continue; 209 } 210 if (rv == -1) { 211 /* fall back reading one sector at a time */ 212 for (n = 0; n < tracksize; n += secsize) { 213 if (lseek(fd, nbytes, SEEK_SET) != nbytes) 214 err(EX_OSERR, "cannot lseek()"); 215 rv = read(fd, trackbuf, secsize); 216 if (rv == secsize) { 217 nbytes += rv; 218 if (!quiet) 219 fprintf(stderr, "%5d KB\r", 220 nbytes / 1024); 221 fwrite(trackbuf, sizeof(unsigned char), 222 rv, of); 223 fflush(of); 224 continue; 225 } 226 if (rv == -1) { 227 if (errno != EIO) { 228 if (!quiet) 229 putc('\n', stderr); 230 perror("non-IO error"); 231 return (EX_OSERR); 232 } 233 if (ioctl(fd, FD_GSTAT, &fdcs) == -1) 234 errx(EX_IOERR, 235 "floppy IO error, but no FDC status"); 236 nerrs++; 237 recoverable = fdcs.status[2] & 238 NE7_ST2_DD; 239 if (!quiet) { 240 printstatus(&fdcs, 0); 241 fputs(" (", stderr); 242 if (!recoverable) 243 fputs("not ", stderr); 244 fputs("recoverable)", stderr); 245 } 246 if (!recover) { 247 if (!quiet) 248 putc('\n', stderr); 249 return (EX_IOERR); 250 } 251 memset(trackbuf, fillbyte, secsize); 252 if (recoverable) { 253 fdopts |= FDOPT_NOERROR; 254 if (ioctl(fd, FD_SOPTS, 255 &fdopts) == -1) 256 err(EX_OSERR, 257 "ioctl(fd, FD_SOPTS, FDOPT_NOERROR)"); 258 rv = read(fd, trackbuf, 259 secsize); 260 if (rv != secsize) 261 err(EX_IOERR, 262 "read() with FDOPT_NOERROR still fails"); 263 fdopts &= ~FDOPT_NOERROR; 264 (void)ioctl(fd, FD_SOPTS, 265 &fdopts); 266 } 267 if (!quiet) { 268 if (recoverable) 269 fprintf(stderr, 270 ": recovered"); 271 else 272 fprintf(stderr, 273 ": dummy"); 274 fprintf(stderr, 275 " data @ %#x ... %#x\n", 276 nbytes, 277 nbytes + secsize - 1); 278 } 279 nbytes += secsize; 280 fwrite(trackbuf, sizeof(unsigned char), 281 secsize, of); 282 fflush(of); 283 continue; 284 } 285 errx(EX_OSERR, "unexpected read() result: %d", 286 rv); 287 } 288 } 289 } 290 if (!quiet) { 291 putc('\n', stderr); 292 if (nerrs) 293 fprintf(stderr, "%d error%s\n", 294 nerrs, nerrs > 1? "s": ""); 295 } 296 297 return (nerrs? EX_IOERR: EX_OK); 298 } 299 300 int 301 doreadid(int fd, unsigned int numids, unsigned int trackno) 302 { 303 int rv = 0, status, fdopts; 304 unsigned int i; 305 struct fdc_readid info; 306 struct fdc_status fdcs; 307 struct fd_type fdt; 308 309 if (ioctl(fd, FD_GTYPE, &fdt) == -1) 310 err(EX_OSERR, "ioctl(FD_GTYPE) failed -- not a floppy?"); 311 312 fdopts = FDOPT_NOERRLOG; 313 if (ioctl(fd, FD_SOPTS, &fdopts) == -1) 314 err(EX_OSERR, "ioctl(FD_SOPTS, FDOPT_NOERRLOG)"); 315 316 for (i = 0; i < numids; i++) { 317 info.cyl = trackno / fdt.heads; 318 info.head = fdt.heads > 1? trackno % fdt.heads: 0; 319 if ((status = ioctl(fd, FD_READID, &info)) == 0) { 320 printf("C = %d, H = %d, R = %d, N = %d\n", 321 info.cyl, info.head, info.sec, info.secshift); 322 } else { 323 if (errno != EIO) { 324 perror("non-IO error"); 325 return (EX_OSERR); 326 } 327 if (ioctl(fd, FD_GSTAT, &fdcs) == -1) 328 errx(EX_IOERR, 329 "floppy IO error, but no FDC status"); 330 printstatus(&fdcs, 0); 331 putc('\n', stderr); 332 rv = EX_IOERR; 333 } 334 } 335 336 return (rv); 337 } 338