man.c revision 1.13 1 /* $NetBSD: man.c,v 1.13 1998/08/25 20:59:39 ross Exp $ */
2
3 /*
4 * Copyright (c) 1987, 1993, 1994, 1995
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. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by the University of
18 * California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #include <sys/cdefs.h>
37
38 #ifndef lint
39 __COPYRIGHT("@(#) Copyright (c) 1987, 1993, 1994, 1995\n\
40 The Regents of the University of California. All rights reserved.\n");
41 #endif /* not lint */
42
43 #ifndef lint
44 #if 0
45 static char sccsid[] = "@(#)man.c 8.17 (Berkeley) 1/31/95";
46 #else
47 __RCSID("$NetBSD: man.c,v 1.13 1998/08/25 20:59:39 ross Exp $");
48 #endif
49 #endif /* not lint */
50
51 #include <sys/param.h>
52 #include <sys/queue.h>
53
54 #include <ctype.h>
55 #include <err.h>
56 #include <errno.h>
57 #include <fcntl.h>
58 #include <fnmatch.h>
59 #include <glob.h>
60 #include <signal.h>
61 #include <stdio.h>
62 #include <stdlib.h>
63 #include <string.h>
64 #include <unistd.h>
65
66 #include "config.h"
67 #include "pathnames.h"
68
69 int f_all, f_where;
70
71 int main __P((int, char **));
72 static void build_page __P((char *, char **));
73 static void cat __P((char *));
74 static char *check_pager __P((char *));
75 static int cleanup __P((void));
76 static void how __P((char *));
77 static void jump __P((char **, char *, char *));
78 static int manual __P((char *, TAG *, glob_t *));
79 static void onsig __P((int));
80 static void usage __P((void));
81
82 int
83 main(argc, argv)
84 int argc;
85 char *argv[];
86 {
87 TAG *defp, *defnewp, *section, *sectnewp, *subp;
88 ENTRY *e_defp, *e_sectp, *e_subp, *ep;
89 glob_t pg;
90 size_t len;
91 int ch, f_cat, f_how, found;
92 char **ap, *cmd, *machine, *p, *p_add, *p_path, *pager, *slashp;
93 char *conffile, buf[MAXPATHLEN * 2];
94
95 #ifdef __GNUC__
96 pager = NULL; /* XXX gcc -Wuninitialized */
97 #endif
98
99 f_cat = f_how = 0;
100 conffile = p_add = p_path = NULL;
101 while ((ch = getopt(argc, argv, "-aC:cfhkM:m:P:w")) != -1)
102 switch (ch) {
103 case 'a':
104 f_all = 1;
105 break;
106 case 'C':
107 conffile = optarg;
108 break;
109 case 'c':
110 case '-': /* Deprecated. */
111 f_cat = 1;
112 break;
113 case 'h':
114 f_how = 1;
115 break;
116 case 'm':
117 p_add = optarg;
118 break;
119 case 'M':
120 case 'P': /* Backward compatibility. */
121 p_path = optarg;
122 break;
123 /*
124 * The -f and -k options are backward compatible,
125 * undocumented ways of calling whatis(1) and apropos(1).
126 */
127 case 'f':
128 jump(argv, "-f", "whatis");
129 /* NOTREACHED */
130 case 'k':
131 jump(argv, "-k", "apropos");
132 /* NOTREACHED */
133 case 'w':
134 f_all = f_where = 1;
135 break;
136 case '?':
137 default:
138 usage();
139 }
140 argc -= optind;
141 argv += optind;
142
143 if (!*argv)
144 usage();
145
146 if (!f_cat && !f_how && !f_where) {
147 if (!isatty(1))
148 f_cat = 1;
149 else {
150 if ((pager = getenv("PAGER")) != NULL)
151 pager = check_pager(pager);
152 else pager = _PATH_PAGER;
153 }
154 }
155 /* Read the configuration file. */
156 config(conffile);
157
158 /* Get the machine type. */
159 if ((machine = getenv("MACHINE")) == NULL)
160 machine = MACHINE;
161
162 /* If there's no _default list, create an empty one. */
163 if ((defp = getlist("_default")) == NULL)
164 defp = addlist("_default");
165
166 /*
167 * 1: If the user specified a MANPATH variable, or set the -M
168 * option, we replace the _default list with the user's list,
169 * appending the entries in the _subdir list and the machine.
170 */
171 if (p_path == NULL)
172 p_path = getenv("MANPATH");
173 if (p_path != NULL) {
174 while ((e_defp = defp->list.tqh_first) != NULL) {
175 free(e_defp->s);
176 TAILQ_REMOVE(&defp->list, e_defp, q);
177 }
178 for (p = strtok(p_path, ":");
179 p != NULL; p = strtok(NULL, ":")) {
180 slashp = p[strlen(p) - 1] == '/' ? "" : "/";
181 e_subp = (subp = getlist("_subdir")) == NULL ?
182 NULL : subp->list.tqh_first;
183 for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) {
184 (void)snprintf(buf, sizeof(buf), "%s%s%s{/%s,}",
185 p, slashp, e_subp->s, machine);
186 if ((ep = malloc(sizeof(ENTRY))) == NULL ||
187 (ep->s = strdup(buf)) == NULL)
188 err(1, "malloc");
189 TAILQ_INSERT_TAIL(&defp->list, ep, q);
190 }
191 }
192 }
193
194 /*
195 * 2: If the user did not specify MANPATH, -M or a section, rewrite
196 * the _default list to include the _subdir list and the machine.
197 */
198 if (argv[1] == NULL)
199 section = NULL;
200 else if ((section = getlist(*argv)) != NULL)
201 ++argv;
202 if (p_path == NULL && section == NULL) {
203 defnewp = addlist("_default_new");
204 e_defp =
205 defp->list.tqh_first == NULL ? NULL : defp->list.tqh_first;
206 for (; e_defp != NULL; e_defp = e_defp->q.tqe_next) {
207 slashp =
208 e_defp->s[strlen(e_defp->s) - 1] == '/' ? "" : "/";
209 e_subp = (subp = getlist("_subdir")) == NULL ?
210 NULL : subp->list.tqh_first;
211 for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) {
212 (void)snprintf(buf, sizeof(buf), "%s%s%s{/%s,}",
213 e_defp->s, slashp, e_subp->s, machine);
214 if ((ep = malloc(sizeof(ENTRY))) == NULL ||
215 (ep->s = strdup(buf)) == NULL)
216 err(1, "malloc");
217 TAILQ_INSERT_TAIL(&defnewp->list, ep, q);
218 }
219 }
220 defp = getlist("_default");
221 while ((e_defp = defp->list.tqh_first) != NULL) {
222 free(e_defp->s);
223 TAILQ_REMOVE(&defp->list, e_defp, q);
224 }
225 free(defp->s);
226 TAILQ_REMOVE(&head, defp, q);
227 defnewp = getlist("_default_new");
228 free(defnewp->s);
229 defnewp->s = "_default";
230 defp = defnewp;
231 }
232
233 /*
234 * 3: If the user set the -m option, insert the user's list before
235 * whatever list we have, again appending the _subdir list and
236 * the machine.
237 */
238 if (p_add != NULL)
239 for (p = strtok(p_add, ":"); p != NULL; p = strtok(NULL, ":")) {
240 slashp = p[strlen(p) - 1] == '/' ? "" : "/";
241 e_subp = (subp = getlist("_subdir")) == NULL ?
242 NULL : subp->list.tqh_first;
243 for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) {
244 (void)snprintf(buf, sizeof(buf), "%s%s%s{/%s,}",
245 p, slashp, e_subp->s, machine);
246 if ((ep = malloc(sizeof(ENTRY))) == NULL ||
247 (ep->s = strdup(buf)) == NULL)
248 err(1, "malloc");
249 TAILQ_INSERT_HEAD(&defp->list, ep, q);
250 }
251 }
252
253 /*
254 * 4: If no -m was specified, and a section was, rewrite the section's
255 * paths (if they have a trailing slash) to append the _subdir list
256 * and the machine. This then becomes the _default list.
257 */
258 if (p_add == NULL && section != NULL) {
259 sectnewp = addlist("_section_new");
260 for (e_sectp = section->list.tqh_first;
261 e_sectp != NULL; e_sectp = e_sectp->q.tqe_next) {
262 if (e_sectp->s[strlen(e_sectp->s) - 1] != '/') {
263 (void)snprintf(buf, sizeof(buf),
264 "%s{/%s,}", e_sectp->s, machine);
265 if ((ep = malloc(sizeof(ENTRY))) == NULL ||
266 (ep->s = strdup(buf)) == NULL)
267 err(1, "malloc");
268 TAILQ_INSERT_TAIL(§newp->list, ep, q);
269 continue;
270 }
271 e_subp = (subp = getlist("_subdir")) == NULL ?
272 NULL : subp->list.tqh_first;
273 for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) {
274 (void)snprintf(buf, sizeof(buf), "%s%s{/%s,}",
275 e_sectp->s, e_subp->s, machine);
276 if ((ep = malloc(sizeof(ENTRY))) == NULL ||
277 (ep->s = strdup(buf)) == NULL)
278 err(1, "malloc");
279 TAILQ_INSERT_TAIL(§newp->list, ep, q);
280 }
281 }
282 sectnewp->s = section->s;
283 defp = sectnewp;
284 TAILQ_REMOVE(&head, section, q);
285 }
286
287 /*
288 * 5: Search for the files. Set up an interrupt handler, so the
289 * temporary files go away.
290 */
291 (void)signal(SIGINT, onsig);
292 (void)signal(SIGHUP, onsig);
293
294 memset(&pg, 0, sizeof(pg));
295 for (found = 0; *argv; ++argv)
296 if (manual(*argv, defp, &pg))
297 found = 1;
298
299 /* 6: If nothing found, we're done. */
300 if (!found) {
301 (void)cleanup();
302 exit (1);
303 }
304
305 /* 7: If it's simple, display it fast. */
306 if (f_cat) {
307 for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
308 if (**ap == '\0')
309 continue;
310 cat(*ap);
311 }
312 exit (cleanup());
313 }
314 if (f_how) {
315 for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
316 if (**ap == '\0')
317 continue;
318 how(*ap);
319 }
320 exit(cleanup());
321 }
322 if (f_where) {
323 for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
324 if (**ap == '\0')
325 continue;
326 (void)printf("%s\n", *ap);
327 }
328 exit(cleanup());
329 }
330
331 /*
332 * 8: We display things in a single command; build a list of things
333 * to display.
334 */
335 for (ap = pg.gl_pathv, len = strlen(pager) + 1; *ap != NULL; ++ap) {
336 if (**ap == '\0')
337 continue;
338 len += strlen(*ap) + 1;
339 }
340 if ((cmd = malloc(len)) == NULL) {
341 warn("malloc");
342 (void)cleanup();
343 exit(1);
344 }
345 p = cmd;
346 len = strlen(pager);
347 memmove(p, pager, len);
348 p += len;
349 *p++ = ' ';
350 for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
351 if (**ap == '\0')
352 continue;
353 len = strlen(*ap);
354 memmove(p, *ap, len);
355 p += len;
356 *p++ = ' ';
357 }
358 *p = '\0';
359
360 /* Use system(3) in case someone's pager is "pager arg1 arg2". */
361 (void)system(cmd);
362
363 exit(cleanup());
364 }
365
366 /*
367 * manual --
368 * Search the manuals for the pages.
369 */
370 static int
371 manual(page, tag, pg)
372 char *page;
373 TAG *tag;
374 glob_t *pg;
375 {
376 ENTRY *ep, *e_sufp, *e_tag;
377 TAG *missp, *sufp;
378 int anyfound, cnt, error, found;
379 char *p, buf[MAXPATHLEN];
380
381 anyfound = 0;
382 buf[0] = '*';
383
384 /* For each element in the list... */
385 e_tag = tag == NULL ? NULL : tag->list.tqh_first;
386 for (; e_tag != NULL; e_tag = e_tag->q.tqe_next) {
387 (void)snprintf(buf, sizeof(buf), "%s/%s.*", e_tag->s, page);
388 if ((error = glob(buf,
389 GLOB_APPEND | GLOB_BRACE | GLOB_NOSORT, NULL, pg)) != 0) {
390 if (error == GLOB_NOMATCH)
391 continue;
392 else {
393 warn("globbing");
394 (void)cleanup();
395 exit(1);
396 }
397 }
398 if (pg->gl_matchc == 0)
399 continue;
400
401 /* Find out if it's really a man page. */
402 for (cnt = pg->gl_pathc - pg->gl_matchc;
403 cnt < pg->gl_pathc; ++cnt) {
404
405 /*
406 * Try the _suffix key words first.
407 *
408 * XXX
409 * Older versions of man.conf didn't have the suffix
410 * key words, it was assumed that everything was a .0.
411 * We just test for .0 first, it's fast and probably
412 * going to hit.
413 */
414 (void)snprintf(buf, sizeof(buf), "*/%s.0", page);
415 if (!fnmatch(buf, pg->gl_pathv[cnt], 0))
416 goto next;
417
418 e_sufp = (sufp = getlist("_suffix")) == NULL ?
419 NULL : sufp->list.tqh_first;
420 for (found = 0;
421 e_sufp != NULL; e_sufp = e_sufp->q.tqe_next) {
422 (void)snprintf(buf,
423 sizeof(buf), "*/%s%s", page, e_sufp->s);
424 if (!fnmatch(buf, pg->gl_pathv[cnt], 0)) {
425 found = 1;
426 break;
427 }
428 }
429 if (found)
430 goto next;
431
432 /* Try the _build key words next. */
433 e_sufp = (sufp = getlist("_build")) == NULL ?
434 NULL : sufp->list.tqh_first;
435 for (found = 0;
436 e_sufp != NULL; e_sufp = e_sufp->q.tqe_next) {
437 for (p = e_sufp->s;
438 *p != '\0' && !isspace(*p); ++p);
439 if (*p == '\0')
440 continue;
441 *p = '\0';
442 (void)snprintf(buf,
443 sizeof(buf), "*/%s%s", page, e_sufp->s);
444 if (!fnmatch(buf, pg->gl_pathv[cnt], 0)) {
445 if (!f_where)
446 build_page(p + 1,
447 &pg->gl_pathv[cnt]);
448 *p = ' ';
449 found = 1;
450 break;
451 }
452 *p = ' ';
453 }
454 if (found) {
455 next: anyfound = 1;
456 if (!f_all) {
457 /* Delete any other matches. */
458 while (++cnt< pg->gl_pathc)
459 pg->gl_pathv[cnt] = "";
460 break;
461 }
462 continue;
463 }
464
465 /* It's not a man page, forget about it. */
466 pg->gl_pathv[cnt] = "";
467 }
468
469 if (anyfound && !f_all)
470 break;
471 }
472
473 /* If not found, enter onto the missing list. */
474 if (!anyfound) {
475 if ((missp = getlist("_missing")) == NULL)
476 missp = addlist("_missing");
477 if ((ep = malloc(sizeof(ENTRY))) == NULL ||
478 (ep->s = strdup(page)) == NULL) {
479 warn("malloc");
480 (void)cleanup();
481 exit(1);
482 }
483 TAILQ_INSERT_TAIL(&missp->list, ep, q);
484 }
485 return (anyfound);
486 }
487
488 /*
489 * build_page --
490 * Build a man page for display.
491 */
492 static void
493 build_page(fmt, pathp)
494 char *fmt, **pathp;
495 {
496 static int warned;
497 ENTRY *ep;
498 TAG *intmpp;
499 int fd, n;
500 char *p, *b;
501 char buf[MAXPATHLEN], cmd[MAXPATHLEN], tpath[sizeof(_PATH_TMP)];
502
503 /* Let the user know this may take awhile. */
504 if (!warned) {
505 warned = 1;
506 warnx("Formatting manual page...");
507 }
508
509 /*
510 * Historically man chdir'd to the root of the man tree.
511 * This was used in man pages that contained relative ".so"
512 * directives (including other man pages for command aliases etc.)
513 * It even went one step farther, by examining the first line
514 * of the man page and parsing the .so filename so it would
515 * make hard(?) links to the cat'ted man pages for space savings.
516 * (We don't do that here, but we could).
517 */
518
519 /* copy and find the end */
520 for (b = buf, p = *pathp; (*b++ = *p++) != '\0';)
521 continue;
522
523 /* skip the last two path components, page name and man[n] */
524 for (--b, --p, n = 2; b != buf; b--, p--)
525 if (*b == '/')
526 if (--n == 0) {
527 *b = '\0';
528 (void) chdir(buf);
529 p++;
530 break;
531 }
532
533
534 /* Add a remove-when-done list. */
535 if ((intmpp = getlist("_intmp")) == NULL)
536 intmpp = addlist("_intmp");
537
538 /* Move to the printf(3) format string. */
539 for (; *fmt && isspace(*fmt); ++fmt);
540
541 /*
542 * Get a temporary file and build a version of the file
543 * to display. Replace the old file name with the new one.
544 */
545 (void)strcpy(tpath, _PATH_TMP);
546 if ((fd = mkstemp(tpath)) == -1) {
547 warn("%s", tpath);
548 (void)cleanup();
549 exit(1);
550 }
551 (void)snprintf(buf, sizeof(buf), "%s > %s", fmt, tpath);
552 (void)snprintf(cmd, sizeof(cmd), buf, p);
553 (void)system(cmd);
554 (void)close(fd);
555 if ((*pathp = strdup(tpath)) == NULL) {
556 warn("malloc");
557 (void)cleanup();
558 exit(1);
559 }
560
561 /* Link the built file into the remove-when-done list. */
562 if ((ep = malloc(sizeof(ENTRY))) == NULL) {
563 warn("malloc");
564 (void)cleanup();
565 exit(1);
566 }
567 ep->s = *pathp;
568 TAILQ_INSERT_TAIL(&intmpp->list, ep, q);
569 }
570
571 /*
572 * how --
573 * display how information
574 */
575 static void
576 how(fname)
577 char *fname;
578 {
579 FILE *fp;
580
581 int lcnt, print;
582 char *p, buf[256];
583
584 if (!(fp = fopen(fname, "r"))) {
585 warn("%s", fname);
586 (void)cleanup();
587 exit (1);
588 }
589 #define S1 "SYNOPSIS"
590 #define S2 "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS"
591 #define D1 "DESCRIPTION"
592 #define D2 "D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN"
593 for (lcnt = print = 0; fgets(buf, sizeof(buf), fp);) {
594 if (!strncmp(buf, S1, sizeof(S1) - 1) ||
595 !strncmp(buf, S2, sizeof(S2) - 1)) {
596 print = 1;
597 continue;
598 } else if (!strncmp(buf, D1, sizeof(D1) - 1) ||
599 !strncmp(buf, D2, sizeof(D2) - 1))
600 return;
601 if (!print)
602 continue;
603 if (*buf == '\n')
604 ++lcnt;
605 else {
606 for(; lcnt; --lcnt)
607 (void)putchar('\n');
608 for (p = buf; isspace(*p); ++p);
609 (void)fputs(p, stdout);
610 }
611 }
612 (void)fclose(fp);
613 }
614
615 /*
616 * cat --
617 * cat out the file
618 */
619 static void
620 cat(fname)
621 char *fname;
622 {
623 int fd, n;
624 char buf[2048];
625
626 if ((fd = open(fname, O_RDONLY, 0)) < 0) {
627 warn("%s", fname);
628 (void)cleanup();
629 exit(1);
630 }
631 while ((n = read(fd, buf, sizeof(buf))) > 0)
632 if (write(STDOUT_FILENO, buf, n) != n) {
633 warn("write");
634 (void)cleanup();
635 exit (1);
636 }
637 if (n == -1) {
638 warn("read");
639 (void)cleanup();
640 exit(1);
641 }
642 (void)close(fd);
643 }
644
645 /*
646 * check_pager --
647 * check the user supplied page information
648 */
649 static char *
650 check_pager(name)
651 char *name;
652 {
653 char *p, *save;
654
655 /*
656 * if the user uses "more", we make it "more -s"; watch out for
657 * PAGER = "mypager /usr/ucb/more"
658 */
659 for (p = name; *p && !isspace(*p); ++p);
660 for (; p > name && *p != '/'; --p);
661 if (p != name)
662 ++p;
663
664 /* make sure it's "more", not "morex" */
665 if (!strncmp(p, "more", 4) && (!p[4] || isspace(p[4]))){
666 save = name;
667 /* allocate space to add the "-s" */
668 if (!(name =
669 malloc((u_int)(strlen(save) + sizeof("-s") + 1))))
670 err(1, "malloc");
671 (void)sprintf(name, "%s %s", save, "-s");
672 }
673 return(name);
674 }
675
676 /*
677 * jump --
678 * strip out flag argument and jump
679 */
680 static void
681 jump(argv, flag, name)
682 char **argv, *flag, *name;
683 {
684 char **arg;
685
686 argv[0] = name;
687 for (arg = argv + 1; *arg; ++arg)
688 if (!strcmp(*arg, flag))
689 break;
690 for (; *arg; ++arg)
691 arg[0] = arg[1];
692 execvp(name, argv);
693 (void)fprintf(stderr, "%s: Command not found.\n", name);
694 exit(1);
695 }
696
697 /*
698 * onsig --
699 * If signaled, delete the temporary files.
700 */
701 static void
702 onsig(signo)
703 int signo;
704 {
705 (void)cleanup();
706
707 (void)signal(signo, SIG_DFL);
708 (void)kill(getpid(), signo);
709
710 /* NOTREACHED */
711 exit (1);
712 }
713
714 /*
715 * cleanup --
716 * Clean up temporary files, show any error messages.
717 */
718 static int
719 cleanup()
720 {
721 TAG *intmpp, *missp;
722 ENTRY *ep;
723 int rval;
724
725 rval = 0;
726 ep = (missp = getlist("_missing")) == NULL ?
727 NULL : missp->list.tqh_first;
728 if (ep != NULL)
729 for (; ep != NULL; ep = ep->q.tqe_next) {
730 warnx("no entry for %s in the manual.", ep->s);
731 rval = 1;
732 }
733
734 ep = (intmpp = getlist("_intmp")) == NULL ?
735 NULL : intmpp->list.tqh_first;
736 for (; ep != NULL; ep = ep->q.tqe_next)
737 (void)unlink(ep->s);
738 return (rval);
739 }
740
741 /*
742 * usage --
743 * print usage message and die
744 */
745 static void
746 usage()
747 {
748 (void)fprintf(stderr,
749 "usage: man [-achw] [-C file] [-M path] [-m path] [section] title ...\n");
750 exit(1);
751 }
752