xref: /freebsd/lib/libc/db/test/dbtest.c (revision 7fdf597e96a02165cfe22ff357b857d5fa15ed8a)
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 #include <sys/param.h>
33 #include <sys/stat.h>
34 
35 #include <ctype.h>
36 #include <errno.h>
37 #include <fcntl.h>
38 #include <limits.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include <unistd.h>
43 
44 #include <db.h>
45 
46 enum S { COMMAND, COMPARE, GET, PUT, REMOVE, SEQ, SEQFLAG, KEY, DATA };
47 
48 void	 compare(DBT *, DBT *);
49 DBTYPE	 dbtype(char *);
50 void	 dump(DB *, int);
51 void	 err(const char *, ...) __printflike(1, 2);
52 void	 get(DB *, DBT *);
53 void	 getdata(DB *, DBT *, DBT *);
54 void	 put(DB *, DBT *, DBT *);
55 void	 rem(DB *, DBT *);
56 char	*sflags(int);
57 void	 synk(DB *);
58 void	*rfile(char *, size_t *);
59 void	 seq(DB *, DBT *);
60 u_int	 setflags(char *);
61 void	*setinfo(DBTYPE, char *);
62 void	 usage(void);
63 void	*xmalloc(char *, size_t);
64 
65 DBTYPE type;				/* Database type. */
66 void *infop;				/* Iflags. */
67 u_long lineno;				/* Current line in test script. */
68 u_int flags;				/* Current DB flags. */
69 int ofd = STDOUT_FILENO;		/* Standard output fd. */
70 
71 DB *XXdbp;				/* Global for gdb. */
72 int XXlineno;				/* Fast breakpoint for gdb. */
73 
74 int
75 main(argc, argv)
76 	int argc;
77 	char *argv[];
78 {
79 	extern int optind;
80 	extern char *optarg;
81 	enum S command, state;
82 	DB *dbp;
83 	DBT data, key, keydata;
84 	size_t len;
85 	int ch, oflags, sflag;
86 	char *fname, *infoarg, *p, *t, buf[8 * 1024];
87 
88 	infoarg = NULL;
89 	fname = NULL;
90 	oflags = O_CREAT | O_RDWR;
91 	sflag = 0;
92 	while ((ch = getopt(argc, argv, "f:i:lo:s")) != -1)
93 		switch (ch) {
94 		case 'f':
95 			fname = optarg;
96 			break;
97 		case 'i':
98 			infoarg = optarg;
99 			break;
100 		case 'l':
101 			oflags |= DB_LOCK;
102 			break;
103 		case 'o':
104 			if ((ofd = open(optarg,
105 			    O_WRONLY|O_CREAT|O_TRUNC, 0666)) < 0)
106 				err("%s: %s", optarg, strerror(errno));
107 			break;
108 		case 's':
109 			sflag = 1;
110 			break;
111 		case '?':
112 		default:
113 			usage();
114 		}
115 	argc -= optind;
116 	argv += optind;
117 
118 	if (argc != 2)
119 		usage();
120 
121 	/* Set the type. */
122 	type = dbtype(*argv++);
123 
124 	/* Open the descriptor file. */
125         if (strcmp(*argv, "-") && freopen(*argv, "r", stdin) == NULL)
126 	    err("%s: %s", *argv, strerror(errno));
127 
128 	/* Set up the db structure as necessary. */
129 	if (infoarg == NULL)
130 		infop = NULL;
131 	else
132 		for (p = strtok(infoarg, ",\t "); p != NULL;
133 		    p = strtok(0, ",\t "))
134 			if (*p != '\0')
135 				infop = setinfo(type, p);
136 
137 	/*
138 	 * Open the DB.  Delete any preexisting copy, you almost never
139 	 * want it around, and it often screws up tests.
140 	 */
141 	if (fname == NULL) {
142 		p = getenv("TMPDIR");
143 		if (p == NULL)
144 			p = "/var/tmp";
145 		(void)snprintf(buf, sizeof(buf), "%s/__dbtest", p);
146 		fname = buf;
147 		(void)unlink(buf);
148 	} else  if (!sflag)
149 		(void)unlink(fname);
150 
151 	if ((dbp = dbopen(fname,
152 	    oflags, S_IRUSR | S_IWUSR, type, infop)) == NULL)
153 		err("dbopen: %s", strerror(errno));
154 	XXdbp = dbp;
155 
156 	state = COMMAND;
157 	for (lineno = 1;
158 	    (p = fgets(buf, sizeof(buf), stdin)) != NULL; ++lineno) {
159 		/* Delete the newline, displaying the key/data is easier. */
160 		if (ofd == STDOUT_FILENO && (t = strchr(p, '\n')) != NULL)
161 			*t = '\0';
162 		if ((len = strlen(buf)) == 0 || isspace(*p) || *p == '#')
163 			continue;
164 
165 		/* Convenient gdb break point. */
166 		if (XXlineno == lineno)
167 			XXlineno = 1;
168 		switch (*p) {
169 		case 'c':			/* compare */
170 			if (state != COMMAND)
171 				err("line %lu: not expecting command", lineno);
172 			state = KEY;
173 			command = COMPARE;
174 			break;
175 		case 'e':			/* echo */
176 			if (state != COMMAND)
177 				err("line %lu: not expecting command", lineno);
178 			/* Don't display the newline, if CR at EOL. */
179 			if (p[len - 2] == '\r')
180 				--len;
181 			if (write(ofd, p + 1, len - 1) != len - 1 ||
182 			    write(ofd, "\n", 1) != 1)
183 				err("write: %s", strerror(errno));
184 			break;
185 		case 'g':			/* get */
186 			if (state != COMMAND)
187 				err("line %lu: not expecting command", lineno);
188 			state = KEY;
189 			command = GET;
190 			break;
191 		case 'p':			/* put */
192 			if (state != COMMAND)
193 				err("line %lu: not expecting command", lineno);
194 			state = KEY;
195 			command = PUT;
196 			break;
197 		case 'r':			/* remove */
198 			if (state != COMMAND)
199 				err("line %lu: not expecting command", lineno);
200                         if (flags == R_CURSOR) {
201 				rem(dbp, &key);
202 				state = COMMAND;
203                         } else {
204 				state = KEY;
205 				command = REMOVE;
206 			}
207 			break;
208 		case 'S':			/* sync */
209 			if (state != COMMAND)
210 				err("line %lu: not expecting command", lineno);
211 			synk(dbp);
212 			state = COMMAND;
213 			break;
214 		case 's':			/* seq */
215 			if (state != COMMAND)
216 				err("line %lu: not expecting command", lineno);
217 			if (flags == R_CURSOR) {
218 				state = KEY;
219 				command = SEQ;
220 			} else
221 				seq(dbp, &key);
222 			break;
223 		case 'f':
224 			flags = setflags(p + 1);
225 			break;
226 		case 'D':			/* data file */
227 			if (state != DATA)
228 				err("line %lu: not expecting data", lineno);
229 			data.data = rfile(p + 1, &data.size);
230 			goto ldata;
231 		case 'd':			/* data */
232 			if (state != DATA)
233 				err("line %lu: not expecting data", lineno);
234 			data.data = xmalloc(p + 1, len - 1);
235 			data.size = len - 1;
236 ldata:			switch (command) {
237 			case COMPARE:
238 				compare(&keydata, &data);
239 				break;
240 			case PUT:
241 				put(dbp, &key, &data);
242 				break;
243 			default:
244 				err("line %lu: command doesn't take data",
245 				    lineno);
246 			}
247 			if (type != DB_RECNO)
248 				free(key.data);
249 			free(data.data);
250 			state = COMMAND;
251 			break;
252 		case 'K':			/* key file */
253 			if (state != KEY)
254 				err("line %lu: not expecting a key", lineno);
255 			if (type == DB_RECNO)
256 				err("line %lu: 'K' not available for recno",
257 				    lineno);
258 			key.data = rfile(p + 1, &key.size);
259 			goto lkey;
260 		case 'k':			/* key */
261 			if (state != KEY)
262 				err("line %lu: not expecting a key", lineno);
263 			if (type == DB_RECNO) {
264 				static recno_t recno;
265 				recno = atoi(p + 1);
266 				key.data = &recno;
267 				key.size = sizeof(recno);
268 			} else {
269 				key.data = xmalloc(p + 1, len - 1);
270 				key.size = len - 1;
271 			}
272 lkey:			switch (command) {
273 			case COMPARE:
274 				getdata(dbp, &key, &keydata);
275 				state = DATA;
276 				break;
277 			case GET:
278 				get(dbp, &key);
279 				if (type != DB_RECNO)
280 					free(key.data);
281 				state = COMMAND;
282 				break;
283 			case PUT:
284 				state = DATA;
285 				break;
286 			case REMOVE:
287 				rem(dbp, &key);
288 				if ((type != DB_RECNO) && (flags != R_CURSOR))
289 					free(key.data);
290 				state = COMMAND;
291 				break;
292 			case SEQ:
293 				seq(dbp, &key);
294 				if ((type != DB_RECNO) && (flags != R_CURSOR))
295 					free(key.data);
296 				state = COMMAND;
297 				break;
298 			default:
299 				err("line %lu: command doesn't take a key",
300 				    lineno);
301 			}
302 			break;
303 		case 'o':
304 			dump(dbp, p[1] == 'r');
305 			break;
306 		default:
307 			err("line %lu: %s: unknown command character",
308 			    lineno, p);
309 		}
310 	}
311 #ifdef STATISTICS
312 	/*
313 	 * -l must be used (DB_LOCK must be set) for this to be
314 	 * used, otherwise a page will be locked and it will fail.
315 	 */
316 	if (type == DB_BTREE && oflags & DB_LOCK)
317 		__bt_stat(dbp);
318 #endif
319 	if (dbp->close(dbp))
320 		err("db->close: %s", strerror(errno));
321 	(void)close(ofd);
322 	exit(0);
323 }
324 
325 #define	NOOVERWRITE	"put failed, would overwrite key\n"
326 
327 void
328 compare(db1, db2)
329 	DBT *db1, *db2;
330 {
331 	size_t len;
332 	u_char *p1, *p2;
333 
334 	if (db1->size != db2->size)
335 		printf("compare failed: key->data len %lu != data len %lu\n",
336 		    db1->size, db2->size);
337 
338 	len = MIN(db1->size, db2->size);
339 	for (p1 = db1->data, p2 = db2->data; len--;)
340 		if (*p1++ != *p2++) {
341 			printf("compare failed at offset %d\n",
342 			    p1 - (u_char *)db1->data);
343 			break;
344 		}
345 }
346 
347 void
348 get(dbp, kp)
349 	DB *dbp;
350 	DBT *kp;
351 {
352 	DBT data;
353 
354 	switch (dbp->get(dbp, kp, &data, flags)) {
355 	case 0:
356 		(void)write(ofd, data.data, data.size);
357 		if (ofd == STDOUT_FILENO)
358 			(void)write(ofd, "\n", 1);
359 		break;
360 	case -1:
361 		err("line %lu: get: %s", lineno, strerror(errno));
362 		/* NOTREACHED */
363 	case 1:
364 #define	NOSUCHKEY	"get failed, no such key\n"
365 		if (ofd != STDOUT_FILENO)
366 			(void)write(ofd, NOSUCHKEY, sizeof(NOSUCHKEY) - 1);
367 		else
368 			(void)fprintf(stderr, "%d: %.*s: %s",
369 			    lineno, MIN(kp->size, 20), kp->data, NOSUCHKEY);
370 #undef	NOSUCHKEY
371 		break;
372 	}
373 }
374 
375 void
376 getdata(dbp, kp, dp)
377 	DB *dbp;
378 	DBT *kp, *dp;
379 {
380 	switch (dbp->get(dbp, kp, dp, flags)) {
381 	case 0:
382 		return;
383 	case -1:
384 		err("line %lu: getdata: %s", lineno, strerror(errno));
385 		/* NOTREACHED */
386 	case 1:
387 		err("line %lu: getdata failed, no such key", lineno);
388 		/* NOTREACHED */
389 	}
390 }
391 
392 void
393 put(dbp, kp, dp)
394 	DB *dbp;
395 	DBT *kp, *dp;
396 {
397 	switch (dbp->put(dbp, kp, dp, flags)) {
398 	case 0:
399 		break;
400 	case -1:
401 		err("line %lu: put: %s", lineno, strerror(errno));
402 		/* NOTREACHED */
403 	case 1:
404 		(void)write(ofd, NOOVERWRITE, sizeof(NOOVERWRITE) - 1);
405 		break;
406 	}
407 }
408 
409 void
410 rem(dbp, kp)
411 	DB *dbp;
412 	DBT *kp;
413 {
414 	switch (dbp->del(dbp, kp, flags)) {
415 	case 0:
416 		break;
417 	case -1:
418 		err("line %lu: rem: %s", lineno, strerror(errno));
419 		/* NOTREACHED */
420 	case 1:
421 #define	NOSUCHKEY	"rem failed, no such key\n"
422 		if (ofd != STDOUT_FILENO)
423 			(void)write(ofd, NOSUCHKEY, sizeof(NOSUCHKEY) - 1);
424 		else if (flags != R_CURSOR)
425 			(void)fprintf(stderr, "%d: %.*s: %s",
426 			    lineno, MIN(kp->size, 20), kp->data, NOSUCHKEY);
427 		else
428 			(void)fprintf(stderr,
429 			    "%d: rem of cursor failed\n", lineno);
430 #undef	NOSUCHKEY
431 		break;
432 	}
433 }
434 
435 void
436 synk(dbp)
437 	DB *dbp;
438 {
439 	switch (dbp->sync(dbp, flags)) {
440 	case 0:
441 		break;
442 	case -1:
443 		err("line %lu: synk: %s", lineno, strerror(errno));
444 		/* NOTREACHED */
445 	}
446 }
447 
448 void
449 seq(dbp, kp)
450 	DB *dbp;
451 	DBT *kp;
452 {
453 	DBT data;
454 
455 	switch (dbp->seq(dbp, kp, &data, flags)) {
456 	case 0:
457 		(void)write(ofd, data.data, data.size);
458 		if (ofd == STDOUT_FILENO)
459 			(void)write(ofd, "\n", 1);
460 		break;
461 	case -1:
462 		err("line %lu: seq: %s", lineno, strerror(errno));
463 		/* NOTREACHED */
464 	case 1:
465 #define	NOSUCHKEY	"seq failed, no such key\n"
466 		if (ofd != STDOUT_FILENO)
467 			(void)write(ofd, NOSUCHKEY, sizeof(NOSUCHKEY) - 1);
468 		else if (flags == R_CURSOR)
469 			(void)fprintf(stderr, "%d: %.*s: %s",
470 			    lineno, MIN(kp->size, 20), kp->data, NOSUCHKEY);
471 		else
472 			(void)fprintf(stderr,
473 			    "%d: seq (%s) failed\n", lineno, sflags(flags));
474 #undef	NOSUCHKEY
475 		break;
476 	}
477 }
478 
479 void
480 dump(dbp, rev)
481 	DB *dbp;
482 	int rev;
483 {
484 	DBT key, data;
485 	int flags, nflags;
486 
487 	if (rev) {
488 		flags = R_LAST;
489 		nflags = R_PREV;
490 	} else {
491 		flags = R_FIRST;
492 		nflags = R_NEXT;
493 	}
494 	for (;; flags = nflags)
495 		switch (dbp->seq(dbp, &key, &data, flags)) {
496 		case 0:
497 			(void)write(ofd, data.data, data.size);
498 			if (ofd == STDOUT_FILENO)
499 				(void)write(ofd, "\n", 1);
500 			break;
501 		case 1:
502 			goto done;
503 		case -1:
504 			err("line %lu: (dump) seq: %s",
505 			    lineno, strerror(errno));
506 			/* NOTREACHED */
507 		}
508 done:	return;
509 }
510 
511 u_int
512 setflags(s)
513 	char *s;
514 {
515 	char *p, *index();
516 
517 	for (; isspace(*s); ++s);
518 	if (*s == '\n' || *s == '\0')
519 		return (0);
520 	if ((p = index(s, '\n')) != NULL)
521 		*p = '\0';
522 	if (!strcmp(s, "R_CURSOR"))		return (R_CURSOR);
523 	if (!strcmp(s, "R_FIRST"))		return (R_FIRST);
524 	if (!strcmp(s, "R_IAFTER")) 		return (R_IAFTER);
525 	if (!strcmp(s, "R_IBEFORE")) 		return (R_IBEFORE);
526 	if (!strcmp(s, "R_LAST")) 		return (R_LAST);
527 	if (!strcmp(s, "R_NEXT")) 		return (R_NEXT);
528 	if (!strcmp(s, "R_NOOVERWRITE"))	return (R_NOOVERWRITE);
529 	if (!strcmp(s, "R_PREV"))		return (R_PREV);
530 	if (!strcmp(s, "R_SETCURSOR"))		return (R_SETCURSOR);
531 
532 	err("line %lu: %s: unknown flag", lineno, s);
533 	/* NOTREACHED */
534 }
535 
536 char *
537 sflags(flags)
538 	int flags;
539 {
540 	switch (flags) {
541 	case R_CURSOR:		return ("R_CURSOR");
542 	case R_FIRST:		return ("R_FIRST");
543 	case R_IAFTER:		return ("R_IAFTER");
544 	case R_IBEFORE:		return ("R_IBEFORE");
545 	case R_LAST:		return ("R_LAST");
546 	case R_NEXT:		return ("R_NEXT");
547 	case R_NOOVERWRITE:	return ("R_NOOVERWRITE");
548 	case R_PREV:		return ("R_PREV");
549 	case R_SETCURSOR:	return ("R_SETCURSOR");
550 	}
551 
552 	return ("UNKNOWN!");
553 }
554 
555 DBTYPE
556 dbtype(s)
557 	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 	err("%s: unknown type (use btree, hash or recno)", s);
566 	/* NOTREACHED */
567 }
568 
569 void *
570 setinfo(type, s)
571 	DBTYPE type;
572 	char *s;
573 {
574 	static BTREEINFO ib;
575 	static HASHINFO ih;
576 	static RECNOINFO rh;
577 	char *eq, *index();
578 
579 	if ((eq = index(s, '=')) == NULL)
580 		err("%s: illegal structure set statement", s);
581 	*eq++ = '\0';
582 	if (!isdigit(*eq))
583 		err("%s: structure set statement must be a number", s);
584 
585 	switch (type) {
586 	case DB_BTREE:
587 		if (!strcmp("flags", s)) {
588 			ib.flags = atoi(eq);
589 			return (&ib);
590 		}
591 		if (!strcmp("cachesize", s)) {
592 			ib.cachesize = atoi(eq);
593 			return (&ib);
594 		}
595 		if (!strcmp("maxkeypage", s)) {
596 			ib.maxkeypage = atoi(eq);
597 			return (&ib);
598 		}
599 		if (!strcmp("minkeypage", s)) {
600 			ib.minkeypage = atoi(eq);
601 			return (&ib);
602 		}
603 		if (!strcmp("lorder", s)) {
604 			ib.lorder = atoi(eq);
605 			return (&ib);
606 		}
607 		if (!strcmp("psize", s)) {
608 			ib.psize = atoi(eq);
609 			return (&ib);
610 		}
611 		break;
612 	case DB_HASH:
613 		if (!strcmp("bsize", s)) {
614 			ih.bsize = atoi(eq);
615 			return (&ih);
616 		}
617 		if (!strcmp("ffactor", s)) {
618 			ih.ffactor = atoi(eq);
619 			return (&ih);
620 		}
621 		if (!strcmp("nelem", s)) {
622 			ih.nelem = atoi(eq);
623 			return (&ih);
624 		}
625 		if (!strcmp("cachesize", s)) {
626 			ih.cachesize = atoi(eq);
627 			return (&ih);
628 		}
629 		if (!strcmp("lorder", s)) {
630 			ih.lorder = atoi(eq);
631 			return (&ih);
632 		}
633 		break;
634 	case DB_RECNO:
635 		if (!strcmp("flags", s)) {
636 			rh.flags = atoi(eq);
637 			return (&rh);
638 		}
639 		if (!strcmp("cachesize", s)) {
640 			rh.cachesize = atoi(eq);
641 			return (&rh);
642 		}
643 		if (!strcmp("lorder", s)) {
644 			rh.lorder = atoi(eq);
645 			return (&rh);
646 		}
647 		if (!strcmp("reclen", s)) {
648 			rh.reclen = atoi(eq);
649 			return (&rh);
650 		}
651 		if (!strcmp("bval", s)) {
652 			rh.bval = atoi(eq);
653 			return (&rh);
654 		}
655 		if (!strcmp("psize", s)) {
656 			rh.psize = atoi(eq);
657 			return (&rh);
658 		}
659 		break;
660 	}
661 	err("%s: unknown structure value", s);
662 	/* NOTREACHED */
663 }
664 
665 void *
666 rfile(name, lenp)
667 	char *name;
668 	size_t *lenp;
669 {
670 	struct stat sb;
671 	void *p;
672 	int fd;
673 	char *np, *index();
674 
675 	for (; isspace(*name); ++name);
676 	if ((np = index(name, '\n')) != NULL)
677 		*np = '\0';
678 	if ((fd = open(name, O_RDONLY, 0)) < 0 ||
679 	    fstat(fd, &sb))
680 		err("%s: %s\n", name, strerror(errno));
681 #ifdef NOT_PORTABLE
682 	if (sb.st_size > (off_t)SIZE_T_MAX)
683 		err("%s: %s\n", name, strerror(E2BIG));
684 #endif
685 	if ((p = (void *)malloc((u_int)sb.st_size)) == NULL)
686 		err("%s", strerror(errno));
687 	(void)read(fd, p, (int)sb.st_size);
688 	*lenp = sb.st_size;
689 	(void)close(fd);
690 	return (p);
691 }
692 
693 void *
694 xmalloc(text, len)
695 	char *text;
696 	size_t len;
697 {
698 	void *p;
699 
700 	if ((p = (void *)malloc(len)) == NULL)
701 		err("%s", strerror(errno));
702 	memmove(p, text, len);
703 	return (p);
704 }
705 
706 void
707 usage()
708 {
709 	(void)fprintf(stderr,
710 	    "usage: dbtest [-l] [-f file] [-i info] [-o file] type script\n");
711 	exit(1);
712 }
713 
714 #include <stdarg.h>
715 
716 void
717 err(const char *fmt, ...)
718 {
719 	va_list ap;
720 
721 	va_start(ap, fmt);
722 	(void)fprintf(stderr, "dbtest: ");
723 	(void)vfprintf(stderr, fmt, ap);
724 	va_end(ap);
725 	(void)fprintf(stderr, "\n");
726 	exit(1);
727 	/* NOTREACHED */
728 }
729