regress/lib/libc/db/dbtest.c

   1 /*      $NetBSD: dbtest.c,v 1.17 2009/01/25 13:40:05 lukem Exp $        */
   2
   3 /*-
   4  * Copyright (c) 1992, 1993, 1994
   5  *      The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 __COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\
  35  The Regents of the University of California.  All rights reserved.");
  36 #endif /* not lint */
  37
  38 #ifndef lint
  39 #if 0
  40 static char sccsid[] = "@(#)dbtest.c    8.17 (Berkeley) 9/1/94";
  41 #else
  42 __RCSID("$NetBSD: dbtest.c,v 1.17 2009/01/25 13:40:05 lukem Exp $");
  43 #endif
  44 #endif /* not lint */
  45
  46 #include <sys/param.h>
  47 #include <sys/stat.h>
  48
  49 #include <ctype.h>
  50 #include <errno.h>
  51 #include <fcntl.h>
  52 #include <limits.h>
  53 #include <stdio.h>
  54 #include <stdlib.h>
  55 #include <string.h>
  56 #include <stdbool.h>
  57 #include <unistd.h>
  58 #include <err.h>
  59 #include <db.h>
  60
  61 enum S { COMMAND, COMPARE, GET, PUT, REMOVE, SEQ, SEQFLAG, KEY, DATA };
  62
  63 static void      compare(DBT *, DBT *);
  64 static DBTYPE    dbtype(const char *);
  65 static void      dump(DB *, int);
  66 static void      get(DB *, DBT *);
  67 static void      getdata(DB *, DBT *, DBT *);
  68 static void      put(DB *, DBT *, DBT *);
  69 static void      rem(DB *, DBT *);
  70 static const char *sflags(int);
  71 static void      synk(DB *);
  72 static void     *rfile(char *, size_t *);
  73 static void      seq(DB *, DBT *);
  74 static u_int     setflags(char *);
  75 static void     *setinfo(DBTYPE, char *);
  76 static void      usage(void) __attribute__((__noreturn__));
  77 static void     *xcopy(void *, size_t);
  78 static void      chkcmd(enum S);
  79 static void      chkdata(enum S);
  80 static void      chkkey(enum S);
  81
  82 #ifdef STATISTICS
  83 extern void __bt_stat(DB *);
  84 #endif
  85
  86 static DBTYPE type;                     /* Database type. */
  87 static void *infop;                     /* Iflags. */
  88 static size_t lineno;                   /* Current line in test script. */
  89 static u_int flags;                             /* Current DB flags. */
  90 static int ofd = STDOUT_FILENO;         /* Standard output fd. */
  91
  92 static DB *XXdbp;                       /* Global for gdb. */
  93 static size_t XXlineno;                 /* Fast breakpoint for gdb. */
  94
  95 int
  96 main(int argc, char *argv[])
  97 {
  98         extern int optind;
  99         extern char *optarg;
 100         enum S command = COMMAND, state;
 101         DB *dbp;
 102         DBT data, key, keydata;
 103         size_t len;
 104         int ch, oflags, sflag;
 105         char *fname, *infoarg, *p, *t, buf[8 * 1024];
 106         bool unlink_dbfile;
 107
 108         infoarg = NULL;
 109         fname = NULL;
 110         unlink_dbfile = false;
 111         oflags = O_CREAT | O_RDWR;
 112         sflag = 0;
 113         while ((ch = getopt(argc, argv, "f:i:lo:s")) != -1)
 114                 switch (ch) {
 115                 case 'f':
 116                         fname = optarg;
 117                         break;
 118                 case 'i':
 119                         infoarg = optarg;
 120                         break;
 121                 case 'l':
 122                         oflags |= DB_LOCK;
 123                         break;
 124                 case 'o':
 125                         if ((ofd = open(optarg,
 126                             O_WRONLY|O_CREAT|O_TRUNC, 0666)) < 0)
 127                                 err(1, "Cannot create `%s'", optarg);
 128                         break;
 129                 case 's':
 130                         sflag = 1;
 131                         break;
 132                 case '?':
 133                 default:
 134                         usage();
 135                 }
 136         argc -= optind;
 137         argv += optind;
 138
 139         if (argc != 2)
 140                 usage();
 141
 142         /* Set the type. */
 143         type = dbtype(*argv++);
 144
 145         /* Open the descriptor file. */
 146         if (strcmp(*argv, "-") && freopen(*argv, "r", stdin) == NULL)
 147             err(1, "Cannot reopen `%s'", *argv);
 148
 149         /* Set up the db structure as necessary. */
 150         if (infoarg == NULL)
 151                 infop = NULL;
 152         else
 153                 for (p = strtok(infoarg, ",\t "); p != NULL;
 154                     p = strtok(0, ",\t "))
 155                         if (*p != '\0')
 156                                 infop = setinfo(type, p);
 157
 158         /*
 159          * Open the DB.  Delete any preexisting copy, you almost never
 160          * want it around, and it often screws up tests.
 161          */
 162         if (fname == NULL) {
 163                 const char *q = getenv("TMPDIR");
 164                 if (q == NULL)
 165                         q = "/var/tmp";
 166                 (void)snprintf(buf, sizeof(buf), "%s/__dbtest", q);
 167                 fname = buf;
 168                 (void)unlink(buf);
 169                 unlink_dbfile = true;
 170         } else  if (!sflag)
 171                 (void)unlink(fname);
 172
 173         if ((dbp = dbopen(fname,
 174             oflags, S_IRUSR | S_IWUSR, type, infop)) == NULL)
 175                 err(1, "Cannot dbopen `%s'", fname);
 176         XXdbp = dbp;
 177         if (unlink_dbfile)
 178                 (void)unlink(fname);
 179
 180         state = COMMAND;
 181         for (lineno = 1;
 182             (p = fgets(buf, sizeof(buf), stdin)) != NULL; ++lineno) {
 183                 /* Delete the newline, displaying the key/data is easier. */
 184                 if (ofd == STDOUT_FILENO && (t = strchr(p, '\n')) != NULL)
 185                         *t = '\0';
 186                 if ((len = strlen(buf)) == 0 || isspace((unsigned char)*p) ||
 187                     *p == '#')
 188                         continue;
 189
 190                 /* Convenient gdb break point. */
 191                 if (XXlineno == lineno)
 192                         XXlineno = 1;
 193                 switch (*p) {
 194                 case 'c':                       /* compare */
 195                         chkcmd(state);
 196                         state = KEY;
 197                         command = COMPARE;
 198                         break;
 199                 case 'e':                       /* echo */
 200                         chkcmd(state);
 201                         /* Don't display the newline, if CR at EOL. */
 202                         if (p[len - 2] == '\r')
 203                                 --len;
 204                         if ((size_t)write(ofd, p + 1, len - 1) != (len - 1) ||
 205                             write(ofd, "\n", 1) != 1)
 206                                 err(1, "write failed");
 207                         break;
 208                 case 'g':                       /* get */
 209                         chkcmd(state);
 210                         state = KEY;
 211                         command = GET;
 212                         break;
 213                 case 'p':                       /* put */
 214                         chkcmd(state);
 215                         state = KEY;
 216                         command = PUT;
 217                         break;
 218                 case 'r':                       /* remove */
 219                         chkcmd(state);
 220                         if (flags == R_CURSOR) {
 221                                 rem(dbp, &key);
 222                                 state = COMMAND;
 223                         } else {
 224                                 state = KEY;
 225                                 command = REMOVE;
 226                         }
 227                         break;
 228                 case 'S':                       /* sync */
 229                         chkcmd(state);
 230                         synk(dbp);
 231                         state = COMMAND;
 232                         break;
 233                 case 's':                       /* seq */
 234                         chkcmd(state);
 235                         if (flags == R_CURSOR) {
 236                                 state = KEY;
 237                                 command = SEQ;
 238                         } else
 239                                 seq(dbp, &key);
 240                         break;
 241                 case 'f':
 242                         flags = setflags(p + 1);
 243                         break;
 244                 case 'D':                       /* data file */
 245                         chkdata(state);
 246                         data.data = rfile(p + 1, &data.size);
 247                         goto ldata;
 248                 case 'd':                       /* data */
 249                         chkdata(state);
 250                         data.data = xcopy(p + 1, len - 1);
 251                         data.size = len - 1;
 252 ldata:                  switch (command) {
 253                         case COMPARE:
 254                                 compare(&keydata, &data);
 255                                 break;
 256                         case PUT:
 257                                 put(dbp, &key, &data);
 258                                 break;
 259                         default:
 260                                 errx(1, "line %zu: command doesn't take data",
 261                                     lineno);
 262                         }
 263                         if (type != DB_RECNO)
 264                                 free(key.data);
 265                         free(data.data);
 266                         state = COMMAND;
 267                         break;
 268                 case 'K':                       /* key file */
 269                         chkkey(state);
 270                         if (type == DB_RECNO)
 271                                 errx(1, "line %zu: 'K' not available for recno",
 272                                     lineno);
 273                         key.data = rfile(p + 1, &key.size);
 274                         goto lkey;
 275                 case 'k':                       /* key */
 276                         chkkey(state);
 277                         if (type == DB_RECNO) {
 278                                 static recno_t recno;
 279                                 recno = atoi(p + 1);
 280                                 key.data = &recno;
 281                                 key.size = sizeof(recno);
 282                         } else {
 283                                 key.data = xcopy(p + 1, len - 1);
 284                                 key.size = len - 1;
 285                         }
 286 lkey:                   switch (command) {
 287                         case COMPARE:
 288                                 getdata(dbp, &key, &keydata);
 289                                 state = DATA;
 290                                 break;
 291                         case GET:
 292                                 get(dbp, &key);
 293                                 if (type != DB_RECNO)
 294                                         free(key.data);
 295                                 state = COMMAND;
 296                                 break;
 297                         case PUT:
 298                                 state = DATA;
 299                                 break;
 300                         case REMOVE:
 301                                 rem(dbp, &key);
 302                                 if ((type != DB_RECNO) && (flags != R_CURSOR))
 303                                         free(key.data);
 304                                 state = COMMAND;
 305                                 break;
 306                         case SEQ:
 307                                 seq(dbp, &key);
 308                                 if ((type != DB_RECNO) && (flags != R_CURSOR))
 309                                         free(key.data);
 310                                 state = COMMAND;
 311                                 break;
 312                         default:
 313                                 errx(1, "line %zu: command doesn't take a key",
 314                                     lineno);
 315                         }
 316                         break;
 317                 case 'o':
 318                         dump(dbp, p[1] == 'r');
 319                         break;
 320                 default:
 321                         errx(1, "line %zu: %s: unknown command character",
 322                             lineno, p);
 323                 }
 324         }
 325 #ifdef STATISTICS
 326         /*
 327          * -l must be used (DB_LOCK must be set) for this to be
 328          * used, otherwise a page will be locked and it will fail.
 329          */
 330         if (type == DB_BTREE && oflags & DB_LOCK)
 331                 __bt_stat(dbp);
 332 #endif
 333         if ((*dbp->close)(dbp))
 334                 err(1, "db->close failed");
 335         (void)close(ofd);
 336         return 0;
 337 }
 338
 339 #define NOOVERWRITE     "put failed, would overwrite key\n"
 340
 341 static void
 342 compare(DBT *db1, DBT *db2)
 343 {
 344         size_t len;
 345         u_char *p1, *p2;
 346
 347         if (db1->size != db2->size)
 348                 printf("compare failed: key->data len %zu != data len %zu\n",
 349                     db1->size, db2->size);
 350
 351         len = MIN(db1->size, db2->size);
 352         for (p1 = db1->data, p2 = db2->data; len--;)
 353                 if (*p1++ != *p2++) {
 354                         printf("compare failed at offset %lu\n",
 355                             (unsigned long)(p1 - (u_char *)db1->data));
 356                         break;
 357                 }
 358 }
 359
 360 static void
 361 get(DB *dbp, DBT *kp)
 362 {
 363         DBT data;
 364
 365         switch ((*dbp->get)(dbp, kp, &data, flags)) {
 366         case 0:
 367                 (void)write(ofd, data.data, data.size);
 368                 if (ofd == STDOUT_FILENO)
 369                         (void)write(ofd, "\n", 1);
 370                 break;
 371         case -1:
 372                 err(1, "line %zu: get failed", lineno);
 373                 /* NOTREACHED */
 374         case 1:
 375 #define NOSUCHKEY       "get failed, no such key\n"
 376                 if (ofd != STDOUT_FILENO)
 377                         (void)write(ofd, NOSUCHKEY, sizeof(NOSUCHKEY) - 1);
 378                 else
 379                         (void)fprintf(stderr, "%zu: %.*s: %s",
 380                             lineno, (int)MIN(kp->size, 20),
 381                             (const char *)kp->data,
 382                             NOSUCHKEY);
 383 #undef  NOSUCHKEY
 384                 break;
 385         }
 386 }
 387
 388 static void
 389 getdata(DB *dbp, DBT *kp, DBT *dp)
 390 {
 391         switch ((*dbp->get)(dbp, kp, dp, flags)) {
 392         case 0:
 393                 return;
 394         case -1:
 395                 err(1, "line %zu: getdata failed", lineno);
 396                 /* NOTREACHED */
 397         case 1:
 398                 errx(1, "line %zu: getdata failed, no such key", lineno);
 399                 /* NOTREACHED */
 400         }
 401 }
 402
 403 static void
 404 put(DB *dbp, DBT *kp, DBT *dp)
 405 {
 406         switch ((*dbp->put)(dbp, kp, dp, flags)) {
 407         case 0:
 408                 break;
 409         case -1:
 410                 err(1, "line %zu: put failed", lineno);
 411                 /* NOTREACHED */
 412         case 1:
 413                 (void)write(ofd, NOOVERWRITE, sizeof(NOOVERWRITE) - 1);
 414                 break;
 415         }
 416 }
 417
 418 static void
 419 rem(DB *dbp, DBT *kp)
 420 {
 421         switch ((*dbp->del)(dbp, kp, flags)) {
 422         case 0:
 423                 break;
 424         case -1:
 425                 err(1, "line %zu: rem failed", lineno);
 426                 /* NOTREACHED */
 427         case 1:
 428 #define NOSUCHKEY       "rem failed, no such key\n"
 429                 if (ofd != STDOUT_FILENO)
 430                         (void)write(ofd, NOSUCHKEY, sizeof(NOSUCHKEY) - 1);
 431                 else if (flags != R_CURSOR)
 432                         (void)fprintf(stderr, "%zu: %.*s: %s",
 433                             lineno, (int)MIN(kp->size, 20),
 434                             (const char *)kp->data, NOSUCHKEY);
 435                 else
 436                         (void)fprintf(stderr,
 437                             "%zu: rem of cursor failed\n", lineno);
 438 #undef  NOSUCHKEY
 439                 break;
 440         }
 441 }
 442
 443 static void
 444 synk(DB *dbp)
 445 {
 446         switch ((*dbp->sync)(dbp, flags)) {
 447         case 0:
 448                 break;
 449         case -1:
 450                 err(1, "line %zu: synk failed", lineno);
 451                 /* NOTREACHED */
 452         }
 453 }
 454
 455 static void
 456 seq(DB *dbp, DBT *kp)
 457 {
 458         DBT data;
 459
 460         switch (dbp->seq(dbp, kp, &data, flags)) {
 461         case 0:
 462                 (void)write(ofd, data.data, data.size);
 463                 if (ofd == STDOUT_FILENO)
 464                         (void)write(ofd, "\n", 1);
 465                 break;
 466         case -1:
 467                 err(1, "line %zu: seq failed", lineno);
 468                 /* NOTREACHED */
 469         case 1:
 470 #define NOSUCHKEY       "seq failed, no such key\n"
 471                 if (ofd != STDOUT_FILENO)
 472                         (void)write(ofd, NOSUCHKEY, sizeof(NOSUCHKEY) - 1);
 473                 else if (flags == R_CURSOR)
 474                         (void)fprintf(stderr, "%zu: %.*s: %s",
 475                             lineno, (int)MIN(kp->size, 20),
 476                             (const char *)kp->data, NOSUCHKEY);
 477                 else
 478                         (void)fprintf(stderr,
 479                             "%zu: seq (%s) failed\n", lineno, sflags(flags));
 480 #undef  NOSUCHKEY
 481                 break;
 482         }
 483 }
 484
 485 static void
 486 dump(DB *dbp, int rev)
 487 {
 488         DBT key, data;
 489         int xflags, nflags;
 490
 491         if (rev) {
 492                 xflags = R_LAST;
 493                 nflags = R_PREV;
 494         } else {
 495                 xflags = R_FIRST;
 496                 nflags = R_NEXT;
 497         }
 498         for (;; xflags = nflags)
 499                 switch (dbp->seq(dbp, &key, &data, xflags)) {
 500                 case 0:
 501                         (void)write(ofd, data.data, data.size);
 502                         if (ofd == STDOUT_FILENO)
 503                                 (void)write(ofd, "\n", 1);
 504                         break;
 505                 case 1:
 506                         goto done;
 507                 case -1:
 508                         err(1, "line %zu: (dump) seq failed", lineno);
 509                         /* NOTREACHED */
 510                 }
 511 done:   return;
 512 }
 513
 514 static u_int
 515 setflags(char *s)
 516 {
 517         char *p;
 518
 519         for (; isspace((unsigned char)*s); ++s);
 520         if (*s == '\n' || *s == '\0')
 521                 return 0;
 522         if ((p = strchr(s, '\n')) != NULL)
 523                 *p = '\0';
 524         if (!strcmp(s, "R_CURSOR"))             return R_CURSOR;
 525         if (!strcmp(s, "R_FIRST"))              return R_FIRST;
 526         if (!strcmp(s, "R_IAFTER"))             return R_IAFTER;
 527         if (!strcmp(s, "R_IBEFORE"))            return R_IBEFORE;
 528         if (!strcmp(s, "R_LAST"))               return R_LAST;
 529         if (!strcmp(s, "R_NEXT"))               return R_NEXT;
 530         if (!strcmp(s, "R_NOOVERWRITE"))        return R_NOOVERWRITE;
 531         if (!strcmp(s, "R_PREV"))               return R_PREV;
 532         if (!strcmp(s, "R_SETCURSOR"))          return R_SETCURSOR;
 533
 534         errx(1, "line %zu: %s: unknown flag", lineno, s);
 535         /* NOTREACHED */
 536 }
 537
 538 static const char *
 539 sflags(int xflags)
 540 {
 541         switch (xflags) {
 542         case R_CURSOR:          return "R_CURSOR";
 543         case R_FIRST:           return "R_FIRST";
 544         case R_IAFTER:          return "R_IAFTER";
 545         case R_IBEFORE:         return "R_IBEFORE";
 546         case R_LAST:            return "R_LAST";
 547         case R_NEXT:            return "R_NEXT";
 548         case R_NOOVERWRITE:     return "R_NOOVERWRITE";
 549         case R_PREV:            return "R_PREV";
 550         case R_SETCURSOR:       return "R_SETCURSOR";
 551         }
 552
 553         return "UNKNOWN!";
 554 }
 555
 556 static DBTYPE
 557 dbtype(const char *s)
 558 {
 559         if (!strcmp(s, "btree"))
 560                 return DB_BTREE;
 561         if (!strcmp(s, "hash"))
 562                 return DB_HASH;
 563         if (!strcmp(s, "recno"))
 564                 return DB_RECNO;
 565         errx(1, "%s: unknown type (use btree, hash or recno)", s);
 566         /* NOTREACHED */
 567 }
 568
 569 static void *
 570 setinfo(DBTYPE dtype, char *s)
 571 {
 572         static BTREEINFO ib;
 573         static HASHINFO ih;
 574         static RECNOINFO rh;
 575         char *eq;
 576
 577         if ((eq = strchr(s, '=')) == NULL)
 578                 errx(1, "%s: illegal structure set statement", s);
 579         *eq++ = '\0';
 580         if (!isdigit((unsigned char)*eq))
 581                 errx(1, "%s: structure set statement must be a number", s);
 582
 583         switch (dtype) {
 584         case DB_BTREE:
 585                 if (!strcmp("flags", s)) {
 586                         ib.flags = atoi(eq);
 587                         return &ib;
 588                 }
 589                 if (!strcmp("cachesize", s)) {
 590                         ib.cachesize = atoi(eq);
 591                         return &ib;
 592                 }
 593                 if (!strcmp("maxkeypage", s)) {
 594                         ib.maxkeypage = atoi(eq);
 595                         return &ib;
 596                 }
 597                 if (!strcmp("minkeypage", s)) {
 598                         ib.minkeypage = atoi(eq);
 599                         return &ib;
 600                 }
 601                 if (!strcmp("lorder", s)) {
 602                         ib.lorder = atoi(eq);
 603                         return &ib;
 604                 }
 605                 if (!strcmp("psize", s)) {
 606                         ib.psize = atoi(eq);
 607                         return &ib;
 608                 }
 609                 break;
 610         case DB_HASH:
 611                 if (!strcmp("bsize", s)) {
 612                         ih.bsize = atoi(eq);
 613                         return &ih;
 614                 }
 615                 if (!strcmp("ffactor", s)) {
 616                         ih.ffactor = atoi(eq);
 617                         return &ih;
 618                 }
 619                 if (!strcmp("nelem", s)) {
 620                         ih.nelem = atoi(eq);
 621                         return &ih;
 622                 }
 623                 if (!strcmp("cachesize", s)) {
 624                         ih.cachesize = atoi(eq);
 625                         return &ih;
 626                 }
 627                 if (!strcmp("lorder", s)) {
 628                         ih.lorder = atoi(eq);
 629                         return &ih;
 630                 }
 631                 break;
 632         case DB_RECNO:
 633                 if (!strcmp("flags", s)) {
 634                         rh.flags = atoi(eq);
 635                         return &rh;
 636                 }
 637                 if (!strcmp("cachesize", s)) {
 638                         rh.cachesize = atoi(eq);
 639                         return &rh;
 640                 }
 641                 if (!strcmp("lorder", s)) {
 642                         rh.lorder = atoi(eq);
 643                         return &rh;
 644                 }
 645                 if (!strcmp("reclen", s)) {
 646                         rh.reclen = atoi(eq);
 647                         return &rh;
 648                 }
 649                 if (!strcmp("bval", s)) {
 650                         rh.bval = atoi(eq);
 651                         return &rh;
 652                 }
 653                 if (!strcmp("psize", s)) {
 654                         rh.psize = atoi(eq);
 655                         return &rh;
 656                 }
 657                 break;
 658         }
 659         errx(1, "%s: unknown structure value", s);
 660         /* NOTREACHED */
 661 }
 662
 663 static void *
 664 rfile(char *name, size_t *lenp)
 665 {
 666         struct stat sb;
 667         void *p;
 668         int fd;
 669         char *np;
 670
 671         for (; isspace((unsigned char)*name); ++name)
 672                 continue;
 673         if ((np = strchr(name, '\n')) != NULL)
 674                 *np = '\0';
 675         if ((fd = open(name, O_RDONLY, 0)) == -1 || fstat(fd, &sb) == -1)
 676                 err(1, "Cannot open `%s'", name);
 677 #ifdef NOT_PORTABLE
 678         if (sb.st_size > (off_t)SIZE_T_MAX) {
 679                 errno = E2BIG;
 680                 err("Cannot process `%s'", name);
 681         }
 682 #endif
 683         if ((p = malloc((size_t)sb.st_size)) == NULL)
 684                 err(1, "Cannot allocate %zu bytes", (size_t)sb.st_size);
 685         if (read(fd, p, (ssize_t)sb.st_size) != (ssize_t)sb.st_size)
 686                 err(1, "read failed");
 687         *lenp = (size_t)sb.st_size;
 688         (void)close(fd);
 689         return p;
 690 }
 691
 692 static void *
 693 xcopy(void *text, size_t len)
 694 {
 695         void *p;
 696
 697         if ((p = malloc(len)) == NULL)
 698                 err(1, "Cannot allocate %zu bytes", len);
 699         (void)memmove(p, text, len);
 700         return p;
 701 }
 702
 703 static void
 704 chkcmd(enum S state)
 705 {
 706         if (state != COMMAND)
 707                 errx(1, "line %zu: not expecting command", lineno);
 708 }
 709
 710 static void
 711 chkdata(enum S state)
 712 {
 713         if (state != DATA)
 714                 errx(1, "line %zu: not expecting data", lineno);
 715 }
 716
 717 static void
 718 chkkey(enum S state)
 719 {
 720         if (state != KEY)
 721                 errx(1, "line %zu: not expecting a key", lineno);
 722 }
 723
 724 static void
 725 usage(void)
 726 {
 727         (void)fprintf(stderr,
 728             "Usage: %s [-l] [-f file] [-i info] [-o file] type script\n",
 729             getprogname());
 730         exit(1);
 731 }