xref: /freebsd/lib/libc/db/test/dbtest.c (revision 580744621f33383027108364dcadad718df46ffe)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
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 #ifndef lint
33 static char copyright[] =
34 "@(#) Copyright (c) 1992, 1993, 1994\n\
35 	The Regents of the University of California.  All rights reserved.\n";
36 #endif /* not lint */
37 
38 #if defined(LIBC_SCCS) && !defined(lint)
39 static char sccsid[] = "@(#)dbtest.c	8.17 (Berkeley) 9/1/94";
40 #endif /* LIBC_SCCS and not lint */
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
43 
44 #include <sys/param.h>
45 #include <sys/stat.h>
46 
47 #include <ctype.h>
48 #include <errno.h>
49 #include <fcntl.h>
50 #include <limits.h>
51 #include <stdio.h>
52 #include <stdlib.h>
53 #include <string.h>
54 #include <unistd.h>
55 
56 #include <db.h>
57 
58 enum S { COMMAND, COMPARE, GET, PUT, REMOVE, SEQ, SEQFLAG, KEY, DATA };
59 
60 void	 compare(DBT *, DBT *);
61 DBTYPE	 dbtype(char *);
62 void	 dump(DB *, int);
63 void	 err(const char *, ...) __printflike(1, 2);
64 void	 get(DB *, DBT *);
65 void	 getdata(DB *, DBT *, DBT *);
66 void	 put(DB *, DBT *, DBT *);
67 void	 rem(DB *, DBT *);
68 char	*sflags(int);
69 void	 synk(DB *);
70 void	*rfile(char *, size_t *);
71 void	 seq(DB *, DBT *);
72 u_int	 setflags(char *);
73 void	*setinfo(DBTYPE, char *);
74 void	 usage(void);
75 void	*xmalloc(char *, size_t);
76 
77 DBTYPE type;				/* Database type. */
78 void *infop;				/* Iflags. */
79 u_long lineno;				/* Current line in test script. */
80 u_int flags;				/* Current DB flags. */
81 int ofd = STDOUT_FILENO;		/* Standard output fd. */
82 
83 DB *XXdbp;				/* Global for gdb. */
84 int XXlineno;				/* Fast breakpoint for gdb. */
85 
86 int
87 main(argc, argv)
88 	int argc;
89 	char *argv[];
90 {
91 	extern int optind;
92 	extern char *optarg;
93 	enum S command, state;
94 	DB *dbp;
95 	DBT data, key, keydata;
96 	size_t len;
97 	int ch, oflags, sflag;
98 	char *fname, *infoarg, *p, *t, buf[8 * 1024];
99 
100 	infoarg = NULL;
101 	fname = NULL;
102 	oflags = O_CREAT | O_RDWR;
103 	sflag = 0;
104 	while ((ch = getopt(argc, argv, "f:i:lo:s")) != -1)
105 		switch (ch) {
106 		case 'f':
107 			fname = optarg;
108 			break;
109 		case 'i':
110 			infoarg = optarg;
111 			break;
112 		case 'l':
113 			oflags |= DB_LOCK;
114 			break;
115 		case 'o':
116 			if ((ofd = open(optarg,
117 			    O_WRONLY|O_CREAT|O_TRUNC, 0666)) < 0)
118 				err("%s: %s", optarg, strerror(errno));
119 			break;
120 		case 's':
121 			sflag = 1;
122 			break;
123 		case '?':
124 		default:
125 			usage();
126 		}
127 	argc -= optind;
128 	argv += optind;
129 
130 	if (argc != 2)
131 		usage();
132 
133 	/* Set the type. */
134 	type = dbtype(*argv++);
135 
136 	/* Open the descriptor file. */
137         if (strcmp(*argv, "-") && freopen(*argv, "r", stdin) == NULL)
138 	    err("%s: %s", *argv, strerror(errno));
139 
140 	/* Set up the db structure as necessary. */
141 	if (infoarg == NULL)
142 		infop = NULL;
143 	else
144 		for (p = strtok(infoarg, ",\t "); p != NULL;
145 		    p = strtok(0, ",\t "))
146 			if (*p != '\0')
147 				infop = setinfo(type, p);
148 
149 	/*
150 	 * Open the DB.  Delete any preexisting copy, you almost never
151 	 * want it around, and it often screws up tests.
152 	 */
153 	if (fname == NULL) {
154 		p = getenv("TMPDIR");
155 		if (p == NULL)
156 			p = "/var/tmp";
157 		(void)snprintf(buf, sizeof(buf), "%s/__dbtest", p);
158 		fname = buf;
159 		(void)unlink(buf);
160 	} else  if (!sflag)
161 		(void)unlink(fname);
162 
163 	if ((dbp = dbopen(fname,
164 	    oflags, S_IRUSR | S_IWUSR, type, infop)) == NULL)
165 		err("dbopen: %s", strerror(errno));
166 	XXdbp = dbp;
167 
168 	state = COMMAND;
169 	for (lineno = 1;
170 	    (p = fgets(buf, sizeof(buf), stdin)) != NULL; ++lineno) {
171 		/* Delete the newline, displaying the key/data is easier. */
172 		if (ofd == STDOUT_FILENO && (t = strchr(p, '\n')) != NULL)
173 			*t = '\0';
174 		if ((len = strlen(buf)) == 0 || isspace(*p) || *p == '#')
175 			continue;
176 
177 		/* Convenient gdb break point. */
178 		if (XXlineno == lineno)
179 			XXlineno = 1;
180 		switch (*p) {
181 		case 'c':			/* compare */
182 			if (state != COMMAND)
183 				err("line %lu: not expecting command", lineno);
184 			state = KEY;
185 			command = COMPARE;
186 			break;
187 		case 'e':			/* echo */
188 			if (state != COMMAND)
189 				err("line %lu: not expecting command", lineno);
190 			/* Don't display the newline, if CR at EOL. */
191 			if (p[len - 2] == '\r')
192 				--len;
193 			if (write(ofd, p + 1, len - 1) != len - 1 ||
194 			    write(ofd, "\n", 1) != 1)
195 				err("write: %s", strerror(errno));
196 			break;
197 		case 'g':			/* get */
198 			if (state != COMMAND)
199 				err("line %lu: not expecting command", lineno);
200 			state = KEY;
201 			command = GET;
202 			break;
203 		case 'p':			/* put */
204 			if (state != COMMAND)
205 				err("line %lu: not expecting command", lineno);
206 			state = KEY;
207 			command = PUT;
208 			break;
209 		case 'r':			/* remove */
210 			if (state != COMMAND)
211 				err("line %lu: not expecting command", lineno);
212                         if (flags == R_CURSOR) {
213 				rem(dbp, &key);
214 				state = COMMAND;
215                         } else {
216 				state = KEY;
217 				command = REMOVE;
218 			}
219 			break;
220 		case 'S':			/* sync */
221 			if (state != COMMAND)
222 				err("line %lu: not expecting command", lineno);
223 			synk(dbp);
224 			state = COMMAND;
225 			break;
226 		case 's':			/* seq */
227 			if (state != COMMAND)
228 				err("line %lu: not expecting command", lineno);
229 			if (flags == R_CURSOR) {
230 				state = KEY;
231 				command = SEQ;
232 			} else
233 				seq(dbp, &key);
234 			break;
235 		case 'f':
236 			flags = setflags(p + 1);
237 			break;
238 		case 'D':			/* data file */
239 			if (state != DATA)
240 				err("line %lu: not expecting data", lineno);
241 			data.data = rfile(p + 1, &data.size);
242 			goto ldata;
243 		case 'd':			/* data */
244 			if (state != DATA)
245 				err("line %lu: not expecting data", lineno);
246 			data.data = xmalloc(p + 1, len - 1);
247 			data.size = len - 1;
248 ldata:			switch (command) {
249 			case COMPARE:
250 				compare(&keydata, &data);
251 				break;
252 			case PUT:
253 				put(dbp, &key, &data);
254 				break;
255 			default:
256 				err("line %lu: command doesn't take data",
257 				    lineno);
258 			}
259 			if (type != DB_RECNO)
260 				free(key.data);
261 			free(data.data);
262 			state = COMMAND;
263 			break;
264 		case 'K':			/* key file */
265 			if (state != KEY)
266 				err("line %lu: not expecting a key", lineno);
267 			if (type == DB_RECNO)
268 				err("line %lu: 'K' not available for recno",
269 				    lineno);
270 			key.data = rfile(p + 1, &key.size);
271 			goto lkey;
272 		case 'k':			/* key */
273 			if (state != KEY)
274 				err("line %lu: not expecting a key", lineno);
275 			if (type == DB_RECNO) {
276 				static recno_t recno;
277 				recno = atoi(p + 1);
278 				key.data = &recno;
279 				key.size = sizeof(recno);
280 			} else {
281 				key.data = xmalloc(p + 1, len - 1);
282 				key.size = len - 1;
283 			}
284 lkey:			switch (command) {
285 			case COMPARE:
286 				getdata(dbp, &key, &keydata);
287 				state = DATA;
288 				break;
289 			case GET:
290 				get(dbp, &key);
291 				if (type != DB_RECNO)
292 					free(key.data);
293 				state = COMMAND;
294 				break;
295 			case PUT:
296 				state = DATA;
297 				break;
298 			case REMOVE:
299 				rem(dbp, &key);
300 				if ((type != DB_RECNO) && (flags != R_CURSOR))
301 					free(key.data);
302 				state = COMMAND;
303 				break;
304 			case SEQ:
305 				seq(dbp, &key);
306 				if ((type != DB_RECNO) && (flags != R_CURSOR))
307 					free(key.data);
308 				state = COMMAND;
309 				break;
310 			default:
311 				err("line %lu: command doesn't take a key",
312 				    lineno);
313 			}
314 			break;
315 		case 'o':
316 			dump(dbp, p[1] == 'r');
317 			break;
318 		default:
319 			err("line %lu: %s: unknown command character",
320 			    lineno, p);
321 		}
322 	}
323 #ifdef STATISTICS
324 	/*
325 	 * -l must be used (DB_LOCK must be set) for this to be
326 	 * used, otherwise a page will be locked and it will fail.
327 	 */
328 	if (type == DB_BTREE && oflags & DB_LOCK)
329 		__bt_stat(dbp);
330 #endif
331 	if (dbp->close(dbp))
332 		err("db->close: %s", strerror(errno));
333 	(void)close(ofd);
334 	exit(0);
335 }
336 
337 #define	NOOVERWRITE	"put failed, would overwrite key\n"
338 
339 void
340 compare(db1, db2)
341 	DBT *db1, *db2;
342 {
343 	size_t len;
344 	u_char *p1, *p2;
345 
346 	if (db1->size != db2->size)
347 		printf("compare failed: key->data len %lu != data len %lu\n",
348 		    db1->size, db2->size);
349 
350 	len = MIN(db1->size, db2->size);
351 	for (p1 = db1->data, p2 = db2->data; len--;)
352 		if (*p1++ != *p2++) {
353 			printf("compare failed at offset %d\n",
354 			    p1 - (u_char *)db1->data);
355 			break;
356 		}
357 }
358 
359 void
360 get(dbp, kp)
361 	DB *dbp;
362 	DBT *kp;
363 {
364 	DBT data;
365 
366 	switch (dbp->get(dbp, kp, &data, flags)) {
367 	case 0:
368 		(void)write(ofd, data.data, data.size);
369 		if (ofd == STDOUT_FILENO)
370 			(void)write(ofd, "\n", 1);
371 		break;
372 	case -1:
373 		err("line %lu: get: %s", lineno, strerror(errno));
374 		/* NOTREACHED */
375 	case 1:
376 #define	NOSUCHKEY	"get failed, no such key\n"
377 		if (ofd != STDOUT_FILENO)
378 			(void)write(ofd, NOSUCHKEY, sizeof(NOSUCHKEY) - 1);
379 		else
380 			(void)fprintf(stderr, "%d: %.*s: %s",
381 			    lineno, MIN(kp->size, 20), kp->data, NOSUCHKEY);
382 #undef	NOSUCHKEY
383 		break;
384 	}
385 }
386 
387 void
388 getdata(dbp, kp, dp)
389 	DB *dbp;
390 	DBT *kp, *dp;
391 {
392 	switch (dbp->get(dbp, kp, dp, flags)) {
393 	case 0:
394 		return;
395 	case -1:
396 		err("line %lu: getdata: %s", lineno, strerror(errno));
397 		/* NOTREACHED */
398 	case 1:
399 		err("line %lu: getdata failed, no such key", lineno);
400 		/* NOTREACHED */
401 	}
402 }
403 
404 void
405 put(dbp, kp, dp)
406 	DB *dbp;
407 	DBT *kp, *dp;
408 {
409 	switch (dbp->put(dbp, kp, dp, flags)) {
410 	case 0:
411 		break;
412 	case -1:
413 		err("line %lu: put: %s", lineno, strerror(errno));
414 		/* NOTREACHED */
415 	case 1:
416 		(void)write(ofd, NOOVERWRITE, sizeof(NOOVERWRITE) - 1);
417 		break;
418 	}
419 }
420 
421 void
422 rem(dbp, kp)
423 	DB *dbp;
424 	DBT *kp;
425 {
426 	switch (dbp->del(dbp, kp, flags)) {
427 	case 0:
428 		break;
429 	case -1:
430 		err("line %lu: rem: %s", lineno, strerror(errno));
431 		/* NOTREACHED */
432 	case 1:
433 #define	NOSUCHKEY	"rem failed, no such key\n"
434 		if (ofd != STDOUT_FILENO)
435 			(void)write(ofd, NOSUCHKEY, sizeof(NOSUCHKEY) - 1);
436 		else if (flags != R_CURSOR)
437 			(void)fprintf(stderr, "%d: %.*s: %s",
438 			    lineno, MIN(kp->size, 20), kp->data, NOSUCHKEY);
439 		else
440 			(void)fprintf(stderr,
441 			    "%d: rem of cursor failed\n", lineno);
442 #undef	NOSUCHKEY
443 		break;
444 	}
445 }
446 
447 void
448 synk(dbp)
449 	DB *dbp;
450 {
451 	switch (dbp->sync(dbp, flags)) {
452 	case 0:
453 		break;
454 	case -1:
455 		err("line %lu: synk: %s", lineno, strerror(errno));
456 		/* NOTREACHED */
457 	}
458 }
459 
460 void
461 seq(dbp, kp)
462 	DB *dbp;
463 	DBT *kp;
464 {
465 	DBT data;
466 
467 	switch (dbp->seq(dbp, kp, &data, flags)) {
468 	case 0:
469 		(void)write(ofd, data.data, data.size);
470 		if (ofd == STDOUT_FILENO)
471 			(void)write(ofd, "\n", 1);
472 		break;
473 	case -1:
474 		err("line %lu: seq: %s", lineno, strerror(errno));
475 		/* NOTREACHED */
476 	case 1:
477 #define	NOSUCHKEY	"seq failed, no such key\n"
478 		if (ofd != STDOUT_FILENO)
479 			(void)write(ofd, NOSUCHKEY, sizeof(NOSUCHKEY) - 1);
480 		else if (flags == R_CURSOR)
481 			(void)fprintf(stderr, "%d: %.*s: %s",
482 			    lineno, MIN(kp->size, 20), kp->data, NOSUCHKEY);
483 		else
484 			(void)fprintf(stderr,
485 			    "%d: seq (%s) failed\n", lineno, sflags(flags));
486 #undef	NOSUCHKEY
487 		break;
488 	}
489 }
490 
491 void
492 dump(dbp, rev)
493 	DB *dbp;
494 	int rev;
495 {
496 	DBT key, data;
497 	int flags, nflags;
498 
499 	if (rev) {
500 		flags = R_LAST;
501 		nflags = R_PREV;
502 	} else {
503 		flags = R_FIRST;
504 		nflags = R_NEXT;
505 	}
506 	for (;; flags = nflags)
507 		switch (dbp->seq(dbp, &key, &data, flags)) {
508 		case 0:
509 			(void)write(ofd, data.data, data.size);
510 			if (ofd == STDOUT_FILENO)
511 				(void)write(ofd, "\n", 1);
512 			break;
513 		case 1:
514 			goto done;
515 		case -1:
516 			err("line %lu: (dump) seq: %s",
517 			    lineno, strerror(errno));
518 			/* NOTREACHED */
519 		}
520 done:	return;
521 }
522 
523 u_int
524 setflags(s)
525 	char *s;
526 {
527 	char *p, *index();
528 
529 	for (; isspace(*s); ++s);
530 	if (*s == '\n' || *s == '\0')
531 		return (0);
532 	if ((p = index(s, '\n')) != NULL)
533 		*p = '\0';
534 	if (!strcmp(s, "R_CURSOR"))		return (R_CURSOR);
535 	if (!strcmp(s, "R_FIRST"))		return (R_FIRST);
536 	if (!strcmp(s, "R_IAFTER")) 		return (R_IAFTER);
537 	if (!strcmp(s, "R_IBEFORE")) 		return (R_IBEFORE);
538 	if (!strcmp(s, "R_LAST")) 		return (R_LAST);
539 	if (!strcmp(s, "R_NEXT")) 		return (R_NEXT);
540 	if (!strcmp(s, "R_NOOVERWRITE"))	return (R_NOOVERWRITE);
541 	if (!strcmp(s, "R_PREV"))		return (R_PREV);
542 	if (!strcmp(s, "R_SETCURSOR"))		return (R_SETCURSOR);
543 
544 	err("line %lu: %s: unknown flag", lineno, s);
545 	/* NOTREACHED */
546 }
547 
548 char *
549 sflags(flags)
550 	int flags;
551 {
552 	switch (flags) {
553 	case R_CURSOR:		return ("R_CURSOR");
554 	case R_FIRST:		return ("R_FIRST");
555 	case R_IAFTER:		return ("R_IAFTER");
556 	case R_IBEFORE:		return ("R_IBEFORE");
557 	case R_LAST:		return ("R_LAST");
558 	case R_NEXT:		return ("R_NEXT");
559 	case R_NOOVERWRITE:	return ("R_NOOVERWRITE");
560 	case R_PREV:		return ("R_PREV");
561 	case R_SETCURSOR:	return ("R_SETCURSOR");
562 	}
563 
564 	return ("UNKNOWN!");
565 }
566 
567 DBTYPE
568 dbtype(s)
569 	char *s;
570 {
571 	if (!strcmp(s, "btree"))
572 		return (DB_BTREE);
573 	if (!strcmp(s, "hash"))
574 		return (DB_HASH);
575 	if (!strcmp(s, "recno"))
576 		return (DB_RECNO);
577 	err("%s: unknown type (use btree, hash or recno)", s);
578 	/* NOTREACHED */
579 }
580 
581 void *
582 setinfo(type, s)
583 	DBTYPE type;
584 	char *s;
585 {
586 	static BTREEINFO ib;
587 	static HASHINFO ih;
588 	static RECNOINFO rh;
589 	char *eq, *index();
590 
591 	if ((eq = index(s, '=')) == NULL)
592 		err("%s: illegal structure set statement", s);
593 	*eq++ = '\0';
594 	if (!isdigit(*eq))
595 		err("%s: structure set statement must be a number", s);
596 
597 	switch (type) {
598 	case DB_BTREE:
599 		if (!strcmp("flags", s)) {
600 			ib.flags = atoi(eq);
601 			return (&ib);
602 		}
603 		if (!strcmp("cachesize", s)) {
604 			ib.cachesize = atoi(eq);
605 			return (&ib);
606 		}
607 		if (!strcmp("maxkeypage", s)) {
608 			ib.maxkeypage = atoi(eq);
609 			return (&ib);
610 		}
611 		if (!strcmp("minkeypage", s)) {
612 			ib.minkeypage = atoi(eq);
613 			return (&ib);
614 		}
615 		if (!strcmp("lorder", s)) {
616 			ib.lorder = atoi(eq);
617 			return (&ib);
618 		}
619 		if (!strcmp("psize", s)) {
620 			ib.psize = atoi(eq);
621 			return (&ib);
622 		}
623 		break;
624 	case DB_HASH:
625 		if (!strcmp("bsize", s)) {
626 			ih.bsize = atoi(eq);
627 			return (&ih);
628 		}
629 		if (!strcmp("ffactor", s)) {
630 			ih.ffactor = atoi(eq);
631 			return (&ih);
632 		}
633 		if (!strcmp("nelem", s)) {
634 			ih.nelem = atoi(eq);
635 			return (&ih);
636 		}
637 		if (!strcmp("cachesize", s)) {
638 			ih.cachesize = atoi(eq);
639 			return (&ih);
640 		}
641 		if (!strcmp("lorder", s)) {
642 			ih.lorder = atoi(eq);
643 			return (&ih);
644 		}
645 		break;
646 	case DB_RECNO:
647 		if (!strcmp("flags", s)) {
648 			rh.flags = atoi(eq);
649 			return (&rh);
650 		}
651 		if (!strcmp("cachesize", s)) {
652 			rh.cachesize = atoi(eq);
653 			return (&rh);
654 		}
655 		if (!strcmp("lorder", s)) {
656 			rh.lorder = atoi(eq);
657 			return (&rh);
658 		}
659 		if (!strcmp("reclen", s)) {
660 			rh.reclen = atoi(eq);
661 			return (&rh);
662 		}
663 		if (!strcmp("bval", s)) {
664 			rh.bval = atoi(eq);
665 			return (&rh);
666 		}
667 		if (!strcmp("psize", s)) {
668 			rh.psize = atoi(eq);
669 			return (&rh);
670 		}
671 		break;
672 	}
673 	err("%s: unknown structure value", s);
674 	/* NOTREACHED */
675 }
676 
677 void *
678 rfile(name, lenp)
679 	char *name;
680 	size_t *lenp;
681 {
682 	struct stat sb;
683 	void *p;
684 	int fd;
685 	char *np, *index();
686 
687 	for (; isspace(*name); ++name);
688 	if ((np = index(name, '\n')) != NULL)
689 		*np = '\0';
690 	if ((fd = open(name, O_RDONLY, 0)) < 0 ||
691 	    fstat(fd, &sb))
692 		err("%s: %s\n", name, strerror(errno));
693 #ifdef NOT_PORTABLE
694 	if (sb.st_size > (off_t)SIZE_T_MAX)
695 		err("%s: %s\n", name, strerror(E2BIG));
696 #endif
697 	if ((p = (void *)malloc((u_int)sb.st_size)) == NULL)
698 		err("%s", strerror(errno));
699 	(void)read(fd, p, (int)sb.st_size);
700 	*lenp = sb.st_size;
701 	(void)close(fd);
702 	return (p);
703 }
704 
705 void *
706 xmalloc(text, len)
707 	char *text;
708 	size_t len;
709 {
710 	void *p;
711 
712 	if ((p = (void *)malloc(len)) == NULL)
713 		err("%s", strerror(errno));
714 	memmove(p, text, len);
715 	return (p);
716 }
717 
718 void
719 usage()
720 {
721 	(void)fprintf(stderr,
722 	    "usage: dbtest [-l] [-f file] [-i info] [-o file] type script\n");
723 	exit(1);
724 }
725 
726 #include <stdarg.h>
727 
728 void
729 err(const char *fmt, ...)
730 {
731 	va_list ap;
732 
733 	va_start(ap, fmt);
734 	(void)fprintf(stderr, "dbtest: ");
735 	(void)vfprintf(stderr, fmt, ap);
736 	va_end(ap);
737 	(void)fprintf(stderr, "\n");
738 	exit(1);
739 	/* NOTREACHED */
740 }
741