usr.bin/mt/mt.c

   1 /*
   2  * Copyright (c) 1980, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#) Copyright (c) 1980, 1993 The Regents of the University of California.  All rights reserved.
  34  * @(#)mt.c     8.2 (Berkeley) 5/4/95
  35  * $FreeBSD: src/usr.bin/mt/mt.c,v 1.26.2.3 2002/11/08 11:35:57 joerg Exp $
  36  * $DragonFly: src/usr.bin/mt/mt.c,v 1.5 2004/01/22 03:22:53 rob Exp $
  37  */
  38
  39 /*
  40  * mt --
  41  *   magnetic tape manipulation program
  42  */
  43 #include <sys/types.h>
  44 #include <sys/ioctl.h>
  45 #include <sys/mtio.h>
  46
  47 #include <ctype.h>
  48 #include <err.h>
  49 #include <fcntl.h>
  50 #include <stdio.h>
  51 #include <stdlib.h>
  52 #include <string.h>
  53 #include <unistd.h>
  54
  55 /* the appropriate sections of <sys/mtio.h> are also #ifdef'd for FreeBSD */
  56 #if defined(__DragonFly__)
  57 /* c_flags */
  58 #define NEED_2ARGS      0x01
  59 #define ZERO_ALLOWED    0x02
  60 #define IS_DENSITY      0x04
  61 #define DISABLE_THIS    0x08
  62 #define IS_COMP         0x10
  63 #endif /* defined(__DragonFly__) */
  64
  65 #ifndef TRUE
  66 #define TRUE 1
  67 #endif
  68 #ifndef FALSE
  69 #define FALSE 0
  70 #endif
  71
  72 struct commands {
  73         char *c_name;
  74         int c_code;
  75         int c_ronly;
  76 #if defined(__DragonFly__)
  77         int c_flags;
  78 #endif /* defined(__DragonFly__) */
  79 } com[] = {
  80         { "bsf",        MTBSF,  1 },
  81         { "bsr",        MTBSR,  1 },
  82 #if defined(__DragonFly__)
  83         /* XXX FreeBSD considered "eof" dangerous, since it's being
  84            confused with "eom" (and is an alias for "weof" anyway) */
  85         { "eof",        MTWEOF, 0, DISABLE_THIS },
  86 #else
  87         { "eof",        MTWEOF, 0 },
  88 #endif
  89         { "fsf",        MTFSF,  1 },
  90         { "fsr",        MTFSR,  1 },
  91         { "offline",    MTOFFL, 1 },
  92         { "rewind",     MTREW,  1 },
  93         { "rewoffl",    MTOFFL, 1 },
  94         { "status",     MTNOP,  1 },
  95 #if defined(__DragonFly__)
  96         { "weof",       MTWEOF, 0, ZERO_ALLOWED },
  97 #else
  98         { "weof",       MTWEOF, 0 },
  99 #endif
 100 #if defined(__DragonFly__)
 101         { "erase",      MTERASE, 0, ZERO_ALLOWED},
 102         { "blocksize",  MTSETBSIZ, 0, NEED_2ARGS|ZERO_ALLOWED },
 103         { "density",    MTSETDNSTY, 0, NEED_2ARGS|ZERO_ALLOWED|IS_DENSITY },
 104         { "eom",        MTEOD, 1 },
 105         { "eod",        MTEOD, 1 },
 106         { "smk",        MTWSS, 0 },
 107         { "wss",        MTWSS, 0 },
 108         { "fss",        MTFSS, 1 },
 109         { "bss",        MTBSS, 1 },
 110         { "comp",       MTCOMP, 0, NEED_2ARGS|ZERO_ALLOWED|IS_COMP },
 111         { "retension",  MTRETENS, 1 },
 112         { "rdhpos",     MTIOCRDHPOS,  0 },
 113         { "rdspos",     MTIOCRDSPOS,  0 },
 114         { "sethpos",    MTIOCHLOCATE, 0, NEED_2ARGS|ZERO_ALLOWED },
 115         { "setspos",    MTIOCSLOCATE, 0, NEED_2ARGS|ZERO_ALLOWED },
 116         { "errstat",    MTIOCERRSTAT, 0 },
 117         { "setmodel",   MTIOCSETEOTMODEL, 0, NEED_2ARGS|ZERO_ALLOWED },
 118         { "seteotmodel",        MTIOCSETEOTMODEL, 0, NEED_2ARGS|ZERO_ALLOWED },
 119         { "getmodel",   MTIOCGETEOTMODEL },
 120         { "geteotmodel",        MTIOCGETEOTMODEL },
 121 #endif /* defined(__DragonFly__) */
 122         { NULL }
 123 };
 124
 125 void printreg(char *, u_int, char *);
 126 void status(struct mtget *);
 127 void usage(void);
 128 #if defined (__DragonFly__)
 129 void st_status (struct mtget *);
 130 int stringtodens (const char *s);
 131 const char *denstostring (int d);
 132 int denstobp(int d, int bpi);
 133 u_int32_t stringtocomp(const char *s);
 134 const char * comptostring(u_int32_t comp);
 135 void warn_eof(void);
 136 #endif /* defined (__DragonFly__) */
 137
 138 int
 139 main(int argc, char **argv)
 140 {
 141         register struct commands *comp;
 142         struct mtget mt_status;
 143         struct mtop mt_com;
 144         int ch, len, mtfd;
 145         char *p, *tape;
 146
 147         if ((tape = getenv("TAPE")) == NULL)
 148                 tape = DEFTAPE;
 149
 150         while ((ch = getopt(argc, argv, "f:t:")) != -1)
 151                 switch(ch) {
 152                 case 'f':
 153                 case 't':
 154                         tape = optarg;
 155                         break;
 156                 case '?':
 157                 default:
 158                         usage();
 159                 }
 160         argc -= optind;
 161         argv += optind;
 162
 163         if (argc < 1 || argc > 2)
 164                 usage();
 165
 166         len = strlen(p = *argv++);
 167         for (comp = com;; comp++) {
 168                 if (comp->c_name == NULL)
 169                         errx(1, "%s: unknown command", p);
 170                 if (strncmp(p, comp->c_name, len) == 0)
 171                         break;
 172         }
 173 #if defined(__DragonFly__)
 174         if((comp->c_flags & NEED_2ARGS) && argc != 2)
 175                 usage();
 176         if(comp->c_flags & DISABLE_THIS) {
 177                 warn_eof();
 178         }
 179 #endif /* defined(__DragonFly__) */
 180         if ((mtfd = open(tape, comp->c_ronly ? O_RDONLY : O_RDWR)) < 0)
 181                 err(1, "%s", tape);
 182         if (comp->c_code != MTNOP) {
 183                 mt_com.mt_op = comp->c_code;
 184                 if (*argv) {
 185 #if defined (__DragonFly__)
 186                         if (!isdigit(**argv) &&
 187                             (comp->c_flags & IS_DENSITY)) {
 188                                 const char *dcanon;
 189                                 mt_com.mt_count = stringtodens(*argv);
 190                                 if (mt_com.mt_count == 0)
 191                                         errx(1, "%s: unknown density", *argv);
 192                                 dcanon = denstostring(mt_com.mt_count);
 193                                 if (strcmp(dcanon, *argv) != 0)
 194                                         printf(
 195                                         "Using \"%s\" as an alias for %s\n",
 196                                                *argv, dcanon);
 197                                 p = "";
 198                         } else if (!isdigit(**argv) &&
 199                                    (comp->c_flags & IS_COMP)) {
 200
 201                                 mt_com.mt_count = stringtocomp(*argv);
 202                                 if ((u_int32_t)mt_com.mt_count == 0xf0f0f0f0)
 203                                         errx(1, "%s: unknown compression",
 204                                              *argv);
 205                                 p = "";
 206                         } else
 207                                 /* allow for hex numbers; useful for density */
 208                                 mt_com.mt_count = strtol(*argv, &p, 0);
 209 #else
 210                         mt_com.mt_count = strtol(*argv, &p, 10);
 211 #endif /* defined(__DragonFly__) */
 212                         if ((mt_com.mt_count <=
 213 #if defined (__DragonFly__)
 214                             ((comp->c_flags & ZERO_ALLOWED)? -1: 0)
 215                             && ((comp->c_flags & IS_COMP) == 0)
 216 #else
 217                             0
 218 #endif /* defined (__DragonFly__) */
 219                             ) || *p)
 220                                 errx(1, "%s: illegal count", *argv);
 221                 }
 222                 else
 223                         mt_com.mt_count = 1;
 224 #if     defined(__DragonFly__)
 225                 switch (comp->c_code) {
 226                 case MTIOCERRSTAT:
 227                 {
 228                         int i;
 229                         union mterrstat umn;
 230                         struct scsi_tape_errors *s = &umn.scsi_errstat;
 231
 232                         if (ioctl(mtfd, comp->c_code, (caddr_t)&umn) < 0)
 233                                 err(2, "%s", tape);
 234                         (void)printf("Last I/O Residual: %u\n", s->io_resid);
 235                         (void)printf(" Last I/O Command:");
 236                         for (i = 0; i < sizeof (s->io_cdb); i++)
 237                                 (void)printf(" %02X", s->io_cdb[i]);
 238                         (void)printf("\n");
 239                         (void)printf("   Last I/O Sense:\n\n\t");
 240                         for (i = 0; i < sizeof (s->io_sense); i++) {
 241                                 (void)printf(" %02X", s->io_sense[i]);
 242                                 if (((i + 1) & 0xf) == 0) {
 243                                         (void)printf("\n\t");
 244                                 }
 245                         }
 246                         (void)printf("\n");
 247                         (void)printf("Last Control Residual: %u\n",
 248                             s->ctl_resid);
 249                         (void)printf(" Last Control Command:");
 250                         for (i = 0; i < sizeof (s->ctl_cdb); i++)
 251                                 (void)printf(" %02X", s->ctl_cdb[i]);
 252                         (void)printf("\n");
 253                         (void)printf("   Last Control Sense:\n\n\t");
 254                         for (i = 0; i < sizeof (s->ctl_sense); i++) {
 255                                 (void)printf(" %02X", s->ctl_sense[i]);
 256                                 if (((i + 1) & 0xf) == 0) {
 257                                         (void)printf("\n\t");
 258                                 }
 259                         }
 260                         (void)printf("\n\n");
 261                         exit(0);
 262                         /* NOTREACHED */
 263                 }
 264                 case MTIOCRDHPOS:
 265                 case MTIOCRDSPOS:
 266                 {
 267                         u_int32_t block;
 268                         if (ioctl(mtfd, comp->c_code, (caddr_t)&block) < 0)
 269                                 err(2, "%s", tape);
 270                         (void)printf("%s: %s block location %u\n", tape,
 271                             (comp->c_code == MTIOCRDHPOS)? "hardware" :
 272                             "logical", block);
 273                         exit(0);
 274                         /* NOTREACHED */
 275                 }
 276                 case MTIOCSLOCATE:
 277                 case MTIOCHLOCATE:
 278                 {
 279                         u_int32_t block = (u_int32_t)mt_com.mt_count;
 280                         if (ioctl(mtfd, comp->c_code, (caddr_t)&block) < 0)
 281                                 err(2, "%s", tape);
 282                         exit(0);
 283                         /* NOTREACHED */
 284                 }
 285                 case MTIOCGETEOTMODEL:
 286                 {
 287                         u_int32_t om;
 288                         if (ioctl(mtfd, MTIOCGETEOTMODEL, (caddr_t)&om) < 0)
 289                                 err(2, "%s", tape);
 290                         (void)printf("%s: the model is %u filemar%s at EOT\n",
 291                             tape, om, (om > 1)? "ks" : "k");
 292                         exit(0);
 293                         /* NOTREACHED */
 294                 }
 295                 case MTIOCSETEOTMODEL:
 296                 {
 297                         u_int32_t om, nm = (u_int32_t)mt_com.mt_count;
 298                         if (ioctl(mtfd, MTIOCGETEOTMODEL, (caddr_t)&om) < 0)
 299                                 err(2, "%s", tape);
 300                         if (ioctl(mtfd, comp->c_code, (caddr_t)&nm) < 0)
 301                                 err(2, "%s", tape);
 302                         (void)printf("%s: old model was %u filemar%s at EOT\n",
 303                             tape, om, (om > 1)? "ks" : "k");
 304                         (void)printf("%s: new model  is %u filemar%s at EOT\n",
 305                             tape, nm, (nm > 1)? "ks" : "k");
 306                         exit(0);
 307                         /* NOTREACHED */
 308                 }
 309                 default:
 310                         break;
 311                 }
 312 #endif
 313                 if (ioctl(mtfd, MTIOCTOP, &mt_com) < 0)
 314                         err(1, "%s: %s", tape, comp->c_name);
 315         } else {
 316                 if (ioctl(mtfd, MTIOCGET, &mt_status) < 0)
 317                         err(1, NULL);
 318                 status(&mt_status);
 319         }
 320         exit(0);
 321         /* NOTREACHED */
 322 }
 323
 324 #ifdef vax
 325 #include <vax/mba/mtreg.h>
 326 #include <vax/mba/htreg.h>
 327
 328 #include <vax/uba/utreg.h>
 329 #include <vax/uba/tmreg.h>
 330 #undef b_repcnt         /* argh */
 331 #include <vax/uba/tsreg.h>
 332 #endif
 333
 334 #ifdef sun
 335 #include <sundev/tmreg.h>
 336 #include <sundev/arreg.h>
 337 #endif
 338
 339 #ifdef tahoe
 340 #include <tahoe/vba/cyreg.h>
 341 #endif
 342
 343 #if defined(__DragonFly__) && defined(__i386__)
 344 #include <machine/wtio.h>
 345 #endif
 346
 347 struct tape_desc {
 348         short   t_type;         /* type of magtape device */
 349         char    *t_name;        /* printing name */
 350         char    *t_dsbits;      /* "drive status" register */
 351         char    *t_erbits;      /* "error" register */
 352 } tapes[] = {
 353 #ifdef vax
 354         { MT_ISTS,      "ts11",         0,              TSXS0_BITS },
 355         { MT_ISHT,      "tm03",         HTDS_BITS,      HTER_BITS },
 356         { MT_ISTM,      "tm11",         0,              TMER_BITS },
 357         { MT_ISMT,      "tu78",         MTDS_BITS,      0 },
 358         { MT_ISUT,      "tu45",         UTDS_BITS,      UTER_BITS },
 359 #endif
 360 #ifdef sun
 361         { MT_ISCPC,     "TapeMaster",   TMS_BITS,       0 },
 362         { MT_ISAR,      "Archive",      ARCH_CTRL_BITS, ARCH_BITS },
 363 #endif
 364 #ifdef tahoe
 365         { MT_ISCY,      "cipher",       CYS_BITS,       CYCW_BITS },
 366 #endif
 367 #if defined (__DragonFly__)
 368         /*
 369          * XXX This is weird.  The st driver reports the tape drive
 370          * as 0x7 (MT_ISAR - Sun/Archive compatible); the wt driver
 371          * either reports MT_ISVIPER1 for an Archive tape, or 0x11
 372          * (MT_ISMFOUR) for other tapes.
 373          * XXX for the wt driver, rely on it behaving like a "standard"
 374          * magtape driver.
 375          */
 376         { MT_ISAR,      "SCSI tape drive", 0,           0 },
 377 #if defined (__i386__)
 378         { MT_ISVIPER1,  "Archive Viper", WTDS_BITS, WTER_BITS },
 379         { MT_ISMFOUR,   "Wangtek",       WTDS_BITS, WTER_BITS },
 380 #endif
 381 #endif /* defined (__DragonFly__) */
 382         { 0 }
 383 };
 384
 385 /*
 386  * Interpret the status buffer returned
 387  */
 388 void
 389 status(register struct mtget *bp)
 390 {
 391         register struct tape_desc *mt;
 392
 393         for (mt = tapes;; mt++) {
 394                 if (mt->t_type == 0) {
 395                         (void)printf("%d: unknown tape drive type\n",
 396                             bp->mt_type);
 397                         return;
 398                 }
 399                 if (mt->t_type == bp->mt_type)
 400                         break;
 401         }
 402 #if defined (__DragonFly__)
 403         if(mt->t_type == MT_ISAR)
 404                 st_status(bp);
 405         else {
 406 #endif /* defined (__DragonFly__) */
 407         (void)printf("%s tape drive, residual=%d\n", mt->t_name, bp->mt_resid);
 408         printreg("ds", (unsigned short)bp->mt_dsreg, mt->t_dsbits);
 409         printreg("\ner", (unsigned short)bp->mt_erreg, mt->t_erbits);
 410         (void)putchar('\n');
 411 #if defined (__DragonFly__)
 412         }
 413 #endif /* defined (__DragonFly__) */
 414 }
 415
 416 /*
 417  * Print a register a la the %b format of the kernel's printf.
 418  */
 419 void
 420 printreg(char *s, register u_int v, register char *bits)
 421 {
 422         register int i, any = 0;
 423         register char c;
 424
 425         if (bits && *bits == 8)
 426                 printf("%s=%o", s, v);
 427         else
 428                 printf("%s=%x", s, v);
 429         if (!bits)
 430                 return;
 431         bits++;
 432         if (v && bits) {
 433                 putchar('<');
 434                 while ((i = *bits++)) {
 435                         if (v & (1 << (i-1))) {
 436                                 if (any)
 437                                         putchar(',');
 438                                 any = 1;
 439                                 for (; (c = *bits) > 32; bits++)
 440                                         putchar(c);
 441                         } else
 442                                 for (; *bits > 32; bits++)
 443                                         ;
 444                 }
 445                 putchar('>');
 446         }
 447 }
 448
 449 void
 450 usage(void)
 451 {
 452         (void)fprintf(stderr, "usage: mt [-f device] command [ count ]\n");
 453         exit(1);
 454 }
 455
 456 #if defined (__DragonFly__)
 457
 458 struct densities {
 459         int dens;
 460         int bpmm;
 461         int bpi;
 462         const char *name;
 463 } dens[] = {
 464         /*
 465          * Taken from T10 Project 997D
 466          * SCSI-3 Stream Device Commands (SSC)
 467          * Revision 11, 4-Nov-97
 468          */
 469         /*Num.  bpmm    bpi     Reference     */
 470         { 0x1,  32,     800,    "X3.22-1983" },
 471         { 0x2,  63,     1600,   "X3.39-1986" },
 472         { 0x3,  246,    6250,   "X3.54-1986" },
 473         { 0x5,  315,    8000,   "X3.136-1986" },
 474         { 0x6,  126,    3200,   "X3.157-1987" },
 475         { 0x7,  252,    6400,   "X3.116-1986" },
 476         { 0x8,  315,    8000,   "X3.158-1987" },
 477         { 0x9,  491,    37871,  "X3.180" },
 478         { 0xA,  262,    6667,   "X3B5/86-199" },
 479         { 0xB,  63,     1600,   "X3.56-1986" },
 480         { 0xC,  500,    12690,  "HI-TC1" },
 481         { 0xD,  999,    25380,  "HI-TC2" },
 482         { 0xF,  394,    10000,  "QIC-120" },
 483         { 0x10, 394,    10000,  "QIC-150" },
 484         { 0x11, 630,    16000,  "QIC-320" },
 485         { 0x12, 2034,   51667,  "QIC-1350" },
 486         { 0x13, 2400,   61000,  "X3B5/88-185A" },
 487         { 0x14, 1703,   43245,  "X3.202-1991" },
 488         { 0x15, 1789,   45434,  "ECMA TC17" },
 489         { 0x16, 394,    10000,  "X3.193-1990" },
 490         { 0x17, 1673,   42500,  "X3B5/91-174" },
 491         { 0x18, 1673,   42500,  "X3B5/92-50" },
 492         { 0x19, 2460,   62500,  "DLTapeIII" },
 493         { 0x1A, 3214,   81633,  "DLTapeIV(20GB)" },
 494         { 0x1B, 3383,   85937,  "DLTapeIV(35GB)" },
 495         { 0x1C, 1654,   42000,  "QIC-385M" },
 496         { 0x1D, 1512,   38400,  "QIC-410M" },
 497         { 0x1E, 1385,   36000,  "QIC-1000C" },
 498         { 0x1F, 2666,   67733,  "QIC-2100C" },
 499         { 0x20, 2666,   67733,  "QIC-6GB(M)" },
 500         { 0x21, 2666,   67733,  "QIC-20GB(C)" },
 501         { 0x22, 1600,   40640,  "QIC-2GB(C)" },
 502         { 0x23, 2666,   67733,  "QIC-875M" },
 503         { 0x24, 2400,   61000,  "DDS-2" },
 504         { 0x25, 3816,   97000,  "DDS-3" },
 505         { 0x26, 3816,   97000,  "DDS-4" },
 506         { 0x27, 3056,   77611,  "Mammoth" },
 507         { 0x28, 1491,   37871,  "X3.224" },
 508         { 0x41, 3868,   98250,  "DLTapeIV(40GB)" },
 509         { 0x48, 5236,   133000, "SDLTapeI(110)" },
 510         { 0x49, 7598,   193000, "SDLTapeI(160)" },
 511         { 0, 0, 0, NULL }
 512 };
 513
 514 struct compression_types {
 515         u_int32_t       comp_number;
 516         const char      *name;
 517 } comp_types[] = {
 518         { 0x00, "none" },
 519         { 0x00, "off" },
 520         { 0x10, "IDRC" },
 521         { 0x20, "DCLZ" },
 522         { 0xffffffff, "enable" },
 523         { 0xffffffff, "on" },
 524         { 0xf0f0f0f0, NULL}
 525 };
 526
 527 const char *
 528 denstostring(int d)
 529 {
 530         static char buf[20];
 531         struct densities *sd;
 532
 533         /* densities 0 and 0x7f are handled as special cases */
 534         if (d == 0)
 535                 return "default";
 536         if (d == 0x7f)
 537                 return "same";
 538         for (sd = dens; sd->dens; sd++)
 539                 if (sd->dens == d)
 540                         break;
 541         if (sd->dens == 0)
 542                 sprintf(buf, "0x%02x", d);
 543         else
 544                 sprintf(buf, "0x%02x:%s", d, sd->name);
 545         return buf;
 546 }
 547
 548 /*
 549  * Given a specific density number, return either the bits per inch or bits
 550  * per millimeter for the given density.
 551  */
 552 int
 553 denstobp(int d, int bpi)
 554 {
 555         struct densities *sd;
 556
 557         for (sd = dens; sd->dens; sd++)
 558                 if (sd->dens == d)
 559                         break;
 560         if (sd->dens == 0)
 561                 return(0);
 562         else {
 563                 if (bpi)
 564                         return(sd->bpi);
 565                 else
 566                         return(sd->bpmm);
 567         }
 568 }
 569
 570 int
 571 stringtodens(const char *s)
 572 {
 573         struct densities *sd;
 574         size_t l = strlen(s);
 575
 576         for (sd = dens; sd->dens; sd++)
 577                 if (strncasecmp(sd->name, s, l) == 0)
 578                         break;
 579         return sd->dens;
 580 }
 581
 582
 583 const char *
 584 getblksiz(int bs)
 585 {
 586         static char buf[25];
 587         if (bs == 0)
 588                 return "variable";
 589         else {
 590                 sprintf(buf, "%d bytes", bs);
 591                 return buf;
 592         }
 593 }
 594
 595 const char *
 596 comptostring(u_int32_t comp)
 597 {
 598         static char buf[20];
 599         struct compression_types *ct;
 600
 601         if (comp == MT_COMP_DISABLED)
 602                 return "disabled";
 603         else if (comp == MT_COMP_UNSUPP)
 604                 return "unsupported";
 605
 606         for (ct = comp_types; ct->name; ct++)
 607                 if (ct->comp_number == comp)
 608                         break;
 609
 610         if (ct->comp_number == 0xf0f0f0f0) {
 611                 sprintf(buf, "0x%x", comp);
 612                 return(buf);
 613         } else
 614                 return(ct->name);
 615 }
 616
 617 u_int32_t
 618 stringtocomp(const char *s)
 619 {
 620         struct compression_types *ct;
 621         size_t l = strlen(s);
 622
 623         for (ct = comp_types; ct->name; ct++)
 624                 if (strncasecmp(ct->name, s, l) == 0)
 625                         break;
 626
 627         return(ct->comp_number);
 628 }
 629
 630 void
 631 st_status(struct mtget *bp)
 632 {
 633         printf("Mode      Density              Blocksize      bpi      "
 634                "Compression\n"
 635                "Current:  %-17s    %-12s   %-7d  %s\n"
 636                "---------available modes---------\n"
 637                "0:        %-17s    %-12s   %-7d  %s\n"
 638                "1:        %-17s    %-12s   %-7d  %s\n"
 639                "2:        %-17s    %-12s   %-7d  %s\n"
 640                "3:        %-17s    %-12s   %-7d  %s\n",
 641                denstostring(bp->mt_density), getblksiz(bp->mt_blksiz),
 642                denstobp(bp->mt_density, TRUE), comptostring(bp->mt_comp),
 643                denstostring(bp->mt_density0), getblksiz(bp->mt_blksiz0),
 644                denstobp(bp->mt_density0, TRUE), comptostring(bp->mt_comp0),
 645                denstostring(bp->mt_density1), getblksiz(bp->mt_blksiz1),
 646                denstobp(bp->mt_density1, TRUE), comptostring(bp->mt_comp1),
 647                denstostring(bp->mt_density2), getblksiz(bp->mt_blksiz2),
 648                denstobp(bp->mt_density2, TRUE), comptostring(bp->mt_comp2),
 649                denstostring(bp->mt_density3), getblksiz(bp->mt_blksiz3),
 650                denstobp(bp->mt_density3, TRUE), comptostring(bp->mt_comp3));
 651
 652         if (bp->mt_dsreg != MTIO_DSREG_NIL) {
 653                 auto char foo[32];
 654                 const char *sfmt = "Current Driver State: %s.\n";
 655                 printf("---------------------------------\n");
 656                 switch (bp->mt_dsreg) {
 657                 case MTIO_DSREG_REST:
 658                         printf(sfmt, "at rest");
 659                         break;
 660                 case MTIO_DSREG_RBSY:
 661                         printf(sfmt, "Communicating with drive");
 662                         break;
 663                 case MTIO_DSREG_WR:
 664                         printf(sfmt, "Writing");
 665                         break;
 666                 case MTIO_DSREG_FMK:
 667                         printf(sfmt, "Writing Filemarks");
 668                         break;
 669                 case MTIO_DSREG_ZER:
 670                         printf(sfmt, "Erasing");
 671                         break;
 672                 case MTIO_DSREG_RD:
 673                         printf(sfmt, "Reading");
 674                         break;
 675                 case MTIO_DSREG_FWD:
 676                         printf(sfmt, "Spacing Forward");
 677                         break;
 678                 case MTIO_DSREG_REV:
 679                         printf(sfmt, "Spacing Reverse");
 680                         break;
 681                 case MTIO_DSREG_POS:
 682                         printf(sfmt,
 683                             "Hardware Positioning (direction unknown)");
 684                         break;
 685                 case MTIO_DSREG_REW:
 686                         printf(sfmt, "Rewinding");
 687                         break;
 688                 case MTIO_DSREG_TEN:
 689                         printf(sfmt, "Retensioning");
 690                         break;
 691                 case MTIO_DSREG_UNL:
 692                         printf(sfmt, "Unloading");
 693                         break;
 694                 case MTIO_DSREG_LD:
 695                         printf(sfmt, "Loading");
 696                         break;
 697                 default:
 698                         (void) sprintf(foo, "Unknown state 0x%x", bp->mt_dsreg);
 699                         printf(sfmt, foo);
 700                         break;
 701                 }
 702         }
 703         if (bp->mt_resid == 0 && bp->mt_fileno == (daddr_t) -1 &&
 704             bp->mt_blkno == (daddr_t) -1)
 705                 return;
 706         printf("---------------------------------\n");
 707         printf("File Number: %ld\tRecord Number: %ld\tResidual Count %d\n",
 708             bp->mt_fileno, bp->mt_blkno, bp->mt_resid);
 709 }
 710
 711 void
 712 warn_eof(void)
 713 {
 714         fprintf(stderr,
 715                 "The \"eof\" command has been disabled.\n"
 716                 "Use \"weof\" if you really want to write end-of-file marks,\n"
 717                 "or \"eom\" if you rather want to skip to the end of "
 718                 "recorded medium.\n");
 719         exit(1);
 720 }
 721
 722 #endif /* defined (__DragonFly__) */