man.c revision 1.15.2.3 1 /* $NetBSD: man.c,v 1.15.2.3 2000/04/30 11:27:57 he 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 1.15.2.3 2000/04/30 11:27:57 he Exp $");
48 #endif
49 #endif /* not lint */
50
51 #include <sys/param.h>
52 #include <sys/queue.h>
53 #include <sys/utsname.h>
54
55 #include <ctype.h>
56 #include <err.h>
57 #include <errno.h>
58 #include <fcntl.h>
59 #include <fnmatch.h>
60 #include <glob.h>
61 #include <signal.h>
62 #include <stdio.h>
63 #include <stdlib.h>
64 #include <string.h>
65 #include <unistd.h>
66
67 #include "config.h"
68 #include "pathnames.h"
69
70 int f_all, f_where;
71
72 int main __P((int, char **));
73 static void build_page __P((char *, char **));
74 static void cat __P((char *));
75 static char *check_pager __P((char *));
76 static int cleanup __P((void));
77 static void how __P((char *));
78 static void jump __P((char **, char *, char *));
79 static int manual __P((char *, TAG *, glob_t *));
80 static void onsig __P((int));
81 static void usage __P((void));
82
83 int
84 main(argc, argv)
85 int argc;
86 char *argv[];
87 {
88 TAG *defp, *defnewp, *section, *sectnewp, *subp;
89 ENTRY *e_defp, *e_sectp, *e_subp, *ep;
90 glob_t pg;
91 size_t len;
92 int ch, f_cat, f_how, found;
93 char **ap, *cmd, *machine, *p, *p_add, *p_path, *pager, *slashp;
94 char *conffile, buf[MAXPATHLEN * 2];
95
96 #ifdef __GNUC__
97 pager = NULL; /* XXX gcc -Wuninitialized */
98 #endif
99
100 f_cat = f_how = 0;
101 conffile = p_add = p_path = NULL;
102 while ((ch = getopt(argc, argv, "-aC:cfhkM:m:P:w")) != -1)
103 switch (ch) {
104 case 'a':
105 f_all = 1;
106 break;
107 case 'C':
108 conffile = optarg;
109 break;
110 case 'c':
111 case '-': /* Deprecated. */
112 f_cat = 1;
113 break;
114 case 'h':
115 f_how = 1;
116 break;
117 case 'm':
118 p_add = optarg;
119 break;
120 case 'M':
121 case 'P': /* Backward compatibility. */
122 p_path = optarg;
123 break;
124 /*
125 * The -f and -k options are backward compatible,
126 * undocumented ways of calling whatis(1) and apropos(1).
127 */
128 case 'f':
129 jump(argv, "-f", "whatis");
130 /* NOTREACHED */
131 case 'k':
132 jump(argv, "-k", "apropos");
133 /* NOTREACHED */
134 case 'w':
135 f_all = f_where = 1;
136 break;
137 case '?':
138 default:
139 usage();
140 }
141 argc -= optind;
142 argv += optind;
143
144 if (!*argv)
145 usage();
146
147 if (!f_cat && !f_how && !f_where) {
148 if (!isatty(STDOUT_FILENO)) {
149 f_cat = 1;
150 } else {
151 if ((pager = getenv("PAGER")) != NULL &&
152 pager[0] != '\0')
153 pager = check_pager(pager);
154 else
155 pager = _PATH_PAGER;
156 }
157 }
158 /* Read the configuration file. */
159 config(conffile);
160
161 /* Get the machine type. */
162 if ((machine = getenv("MACHINE")) == NULL) {
163 struct utsname utsname;
164
165 if (uname(&utsname) == -1) {
166 perror("uname");
167 exit(1);
168 }
169 machine = utsname.machine;
170 }
171
172 /* If there's no _default list, create an empty one. */
173 if ((defp = getlist("_default")) == NULL)
174 defp = addlist("_default");
175
176 /*
177 * 1: If the user specified a MANPATH variable, or set the -M
178 * option, we replace the _default list with the user's list,
179 * appending the entries in the _subdir list and the machine.
180 */
181 if (p_path == NULL)
182 p_path = getenv("MANPATH");
183 if (p_path != NULL) {
184 while ((e_defp = defp->list.tqh_first) != NULL) {
185 free(e_defp->s);
186 TAILQ_REMOVE(&defp->list, e_defp, q);
187 }
188 for (p = strtok(p_path, ":");
189 p != NULL; p = strtok(NULL, ":")) {
190 slashp = p[strlen(p) - 1] == '/' ? "" : "/";
191 e_subp = (subp = getlist("_subdir")) == NULL ?
192 NULL : subp->list.tqh_first;
193 for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) {
194 (void)snprintf(buf, sizeof(buf), "%s%s%s{/%s,}",
195 p, slashp, e_subp->s, machine);
196 if ((ep = malloc(sizeof(ENTRY))) == NULL ||
197 (ep->s = strdup(buf)) == NULL)
198 err(1, "malloc");
199 TAILQ_INSERT_TAIL(&defp->list, ep, q);
200 }
201 }
202 }
203
204 /*
205 * 2: If the user did not specify MANPATH, -M or a section, rewrite
206 * the _default list to include the _subdir list and the machine.
207 */
208 if (argv[1] == NULL)
209 section = NULL;
210 else if ((section = getlist(*argv)) != NULL)
211 ++argv;
212 if (p_path == NULL && section == NULL) {
213 defnewp = addlist("_default_new");
214 e_defp =
215 defp->list.tqh_first == NULL ? NULL : defp->list.tqh_first;
216 for (; e_defp != NULL; e_defp = e_defp->q.tqe_next) {
217 slashp =
218 e_defp->s[strlen(e_defp->s) - 1] == '/' ? "" : "/";
219 e_subp = (subp = getlist("_subdir")) == NULL ?
220 NULL : subp->list.tqh_first;
221 for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) {
222 (void)snprintf(buf, sizeof(buf), "%s%s%s{/%s,}",
223 e_defp->s, slashp, e_subp->s, machine);
224 if ((ep = malloc(sizeof(ENTRY))) == NULL ||
225 (ep->s = strdup(buf)) == NULL)
226 err(1, "malloc");
227 TAILQ_INSERT_TAIL(&defnewp->list, ep, q);
228 }
229 }
230 defp = getlist("_default");
231 while ((e_defp = defp->list.tqh_first) != NULL) {
232 free(e_defp->s);
233 TAILQ_REMOVE(&defp->list, e_defp, q);
234 }
235 free(defp->s);
236 TAILQ_REMOVE(&head, defp, q);
237 defnewp = getlist("_default_new");
238 free(defnewp->s);
239 defnewp->s = "_default";
240 defp = defnewp;
241 }
242
243 /*
244 * 3: If the user set the -m option, insert the user's list before
245 * whatever list we have, again appending the _subdir list and
246 * the machine.
247 */
248 if (p_add != NULL)
249 for (p = strtok(p_add, ":"); p != NULL; p = strtok(NULL, ":")) {
250 slashp = p[strlen(p) - 1] == '/' ? "" : "/";
251 e_subp = (subp = getlist("_subdir")) == NULL ?
252 NULL : subp->list.tqh_first;
253 for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) {
254 (void)snprintf(buf, sizeof(buf), "%s%s%s{/%s,}",
255 p, slashp, e_subp->s, machine);
256 if ((ep = malloc(sizeof(ENTRY))) == NULL ||
257 (ep->s = strdup(buf)) == NULL)
258 err(1, "malloc");
259 TAILQ_INSERT_HEAD(&defp->list, ep, q);
260 }
261 }
262
263 /*
264 * 4: If no -m was specified, and a section was, rewrite the section's
265 * paths (if they have a trailing slash) to append the _subdir list
266 * and the machine. This then becomes the _default list.
267 */
268 if (p_add == NULL && section != NULL) {
269 sectnewp = addlist("_section_new");
270 for (e_sectp = section->list.tqh_first;
271 e_sectp != NULL; e_sectp = e_sectp->q.tqe_next) {
272 if (e_sectp->s[strlen(e_sectp->s) - 1] != '/') {
273 (void)snprintf(buf, sizeof(buf),
274 "%s{/%s,}", e_sectp->s, machine);
275 if ((ep = malloc(sizeof(ENTRY))) == NULL ||
276 (ep->s = strdup(buf)) == NULL)
277 err(1, "malloc");
278 TAILQ_INSERT_TAIL(§newp->list, ep, q);
279 continue;
280 }
281 e_subp = (subp = getlist("_subdir")) == NULL ?
282 NULL : subp->list.tqh_first;
283 for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) {
284 (void)snprintf(buf, sizeof(buf), "%s%s{/%s,}",
285 e_sectp->s, e_subp->s, machine);
286 if ((ep = malloc(sizeof(ENTRY))) == NULL ||
287 (ep->s = strdup(buf)) == NULL)
288 err(1, "malloc");
289 TAILQ_INSERT_TAIL(§newp->list, ep, q);
290 }
291 }
292 sectnewp->s = section->s;
293 defp = sectnewp;
294 TAILQ_REMOVE(&head, section, q);
295 }
296
297 /*
298 * 5: Search for the files. Set up an interrupt handler, so the
299 * temporary files go away.
300 */
301 (void)signal(SIGINT, onsig);
302 (void)signal(SIGHUP, onsig);
303 (void)signal(SIGPIPE, onsig);
304
305 memset(&pg, 0, sizeof(pg));
306 for (found = 0; *argv; ++argv)
307 if (manual(*argv, defp, &pg))
308 found = 1;
309
310 /* 6: If nothing found, we're done. */
311 if (!found) {
312 (void)cleanup();
313 exit (1);
314 }
315
316 /* 7: If it's simple, display it fast. */
317 if (f_cat) {
318 for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
319 if (**ap == '\0')
320 continue;
321 cat(*ap);
322 }
323 exit (cleanup());
324 }
325 if (f_how) {
326 for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
327 if (**ap == '\0')
328 continue;
329 how(*ap);
330 }
331 exit(cleanup());
332 }
333 if (f_where) {
334 for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
335 if (**ap == '\0')
336 continue;
337 (void)printf("%s\n", *ap);
338 }
339 exit(cleanup());
340 }
341
342 /*
343 * 8: We display things in a single command; build a list of things
344 * to display.
345 */
346 for (ap = pg.gl_pathv, len = strlen(pager) + 1; *ap != NULL; ++ap) {
347 if (**ap == '\0')
348 continue;
349 len += strlen(*ap) + 1;
350 }
351 if ((cmd = malloc(len)) == NULL) {
352 warn("malloc");
353 (void)cleanup();
354 exit(1);
355 }
356 p = cmd;
357 len = strlen(pager);
358 memmove(p, pager, len);
359 p += len;
360 *p++ = ' ';
361 for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
362 if (**ap == '\0')
363 continue;
364 len = strlen(*ap);
365 memmove(p, *ap, len);
366 p += len;
367 *p++ = ' ';
368 }
369 *--p = '\0';
370
371 /* Use system(3) in case someone's pager is "pager arg1 arg2". */
372 (void)system(cmd);
373
374 exit(cleanup());
375 }
376
377 /*
378 * manual --
379 * Search the manuals for the pages.
380 */
381 static int
382 manual(page, tag, pg)
383 char *page;
384 TAG *tag;
385 glob_t *pg;
386 {
387 ENTRY *ep, *e_sufp, *e_tag;
388 TAG *missp, *sufp;
389 int anyfound, cnt, error, found;
390 char *p, buf[MAXPATHLEN];
391
392 anyfound = 0;
393 buf[0] = '*';
394
395 /* For each element in the list... */
396 e_tag = tag == NULL ? NULL : tag->list.tqh_first;
397 for (; e_tag != NULL; e_tag = e_tag->q.tqe_next) {
398 (void)snprintf(buf, sizeof(buf), "%s/%s.*", e_tag->s, page);
399 if ((error = glob(buf,
400 GLOB_APPEND | GLOB_BRACE | GLOB_NOSORT, NULL, pg)) != 0) {
401 if (error == GLOB_NOMATCH)
402 continue;
403 else {
404 warn("globbing");
405 (void)cleanup();
406 exit(1);
407 }
408 }
409 if (pg->gl_matchc == 0)
410 continue;
411
412 /* Find out if it's really a man page. */
413 for (cnt = pg->gl_pathc - pg->gl_matchc;
414 cnt < pg->gl_pathc; ++cnt) {
415
416 /*
417 * Try the _suffix key words first.
418 *
419 * XXX
420 * Older versions of man.conf didn't have the suffix
421 * key words, it was assumed that everything was a .0.
422 * We just test for .0 first, it's fast and probably
423 * going to hit.
424 */
425 (void)snprintf(buf, sizeof(buf), "*/%s.0", page);
426 if (!fnmatch(buf, pg->gl_pathv[cnt], 0))
427 goto next;
428
429 e_sufp = (sufp = getlist("_suffix")) == NULL ?
430 NULL : sufp->list.tqh_first;
431 for (found = 0;
432 e_sufp != NULL; e_sufp = e_sufp->q.tqe_next) {
433 (void)snprintf(buf,
434 sizeof(buf), "*/%s%s", page, e_sufp->s);
435 if (!fnmatch(buf, pg->gl_pathv[cnt], 0)) {
436 found = 1;
437 break;
438 }
439 }
440 if (found)
441 goto next;
442
443 /* Try the _build key words next. */
444 e_sufp = (sufp = getlist("_build")) == NULL ?
445 NULL : sufp->list.tqh_first;
446 for (found = 0;
447 e_sufp != NULL; e_sufp = e_sufp->q.tqe_next) {
448 for (p = e_sufp->s;
449 *p != '\0' && !isspace((unsigned char)*p); ++p);
450 if (*p == '\0')
451 continue;
452 *p = '\0';
453 (void)snprintf(buf,
454 sizeof(buf), "*/%s%s", page, e_sufp->s);
455 if (!fnmatch(buf, pg->gl_pathv[cnt], 0)) {
456 if (!f_where)
457 build_page(p + 1,
458 &pg->gl_pathv[cnt]);
459 *p = ' ';
460 found = 1;
461 break;
462 }
463 *p = ' ';
464 }
465 if (found) {
466 next: anyfound = 1;
467 if (!f_all) {
468 /* Delete any other matches. */
469 while (++cnt< pg->gl_pathc)
470 pg->gl_pathv[cnt] = "";
471 break;
472 }
473 continue;
474 }
475
476 /* It's not a man page, forget about it. */
477 pg->gl_pathv[cnt] = "";
478 }
479
480 if (anyfound && !f_all)
481 break;
482 }
483
484 /* If not found, enter onto the missing list. */
485 if (!anyfound) {
486 if ((missp = getlist("_missing")) == NULL)
487 missp = addlist("_missing");
488 if ((ep = malloc(sizeof(ENTRY))) == NULL ||
489 (ep->s = strdup(page)) == NULL) {
490 warn("malloc");
491 (void)cleanup();
492 exit(1);
493 }
494 TAILQ_INSERT_TAIL(&missp->list, ep, q);
495 }
496 return (anyfound);
497 }
498
499 /*
500 * build_page --
501 * Build a man page for display.
502 */
503 static void
504 build_page(fmt, pathp)
505 char *fmt, **pathp;
506 {
507 static int warned;
508 ENTRY *ep;
509 TAG *intmpp;
510 int fd, n;
511 char *p, *b;
512 char buf[MAXPATHLEN], cmd[MAXPATHLEN], tpath[MAXPATHLEN];
513 const char *tmpdir;
514
515 /* Let the user know this may take awhile. */
516 if (!warned) {
517 warned = 1;
518 warnx("Formatting manual page...");
519 }
520
521 /*
522 * Historically man chdir'd to the root of the man tree.
523 * This was used in man pages that contained relative ".so"
524 * directives (including other man pages for command aliases etc.)
525 * It even went one step farther, by examining the first line
526 * of the man page and parsing the .so filename so it would
527 * make hard(?) links to the cat'ted man pages for space savings.
528 * (We don't do that here, but we could).
529 */
530
531 /* copy and find the end */
532 for (b = buf, p = *pathp; (*b++ = *p++) != '\0';)
533 continue;
534
535 /* skip the last two path components, page name and man[n] */
536 for (--b, --p, n = 2; b != buf; b--, p--)
537 if (*b == '/')
538 if (--n == 0) {
539 *b = '\0';
540 (void) chdir(buf);
541 p++;
542 break;
543 }
544
545
546 /* Add a remove-when-done list. */
547 if ((intmpp = getlist("_intmp")) == NULL)
548 intmpp = addlist("_intmp");
549
550 /* Move to the printf(3) format string. */
551 for (; *fmt && isspace((unsigned char)*fmt); ++fmt)
552 continue;
553
554 /*
555 * Get a temporary file and build a version of the file
556 * to display. Replace the old file name with the new one.
557 */
558 if ((tmpdir = getenv("TMPDIR")) == NULL)
559 tmpdir = _PATH_TMP;
560 (void)snprintf(tpath, sizeof (tpath), "%s/%s", tmpdir, TMPFILE);
561 if ((fd = mkstemp(tpath)) == -1) {
562 warn("%s", tpath);
563 (void)cleanup();
564 exit(1);
565 }
566 (void)snprintf(buf, sizeof(buf), "%s > %s", fmt, tpath);
567 (void)snprintf(cmd, sizeof(cmd), buf, p);
568 (void)system(cmd);
569 (void)close(fd);
570 if ((*pathp = strdup(tpath)) == NULL) {
571 warn("malloc");
572 (void)cleanup();
573 exit(1);
574 }
575
576 /* Link the built file into the remove-when-done list. */
577 if ((ep = malloc(sizeof(ENTRY))) == NULL) {
578 warn("malloc");
579 (void)cleanup();
580 exit(1);
581 }
582 ep->s = *pathp;
583 TAILQ_INSERT_TAIL(&intmpp->list, ep, q);
584 }
585
586 /*
587 * how --
588 * display how information
589 */
590 static void
591 how(fname)
592 char *fname;
593 {
594 FILE *fp;
595
596 int lcnt, print;
597 char *p, buf[256];
598
599 if (!(fp = fopen(fname, "r"))) {
600 warn("%s", fname);
601 (void)cleanup();
602 exit (1);
603 }
604 #define S1 "SYNOPSIS"
605 #define S2 "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS"
606 #define D1 "DESCRIPTION"
607 #define D2 "D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN"
608 for (lcnt = print = 0; fgets(buf, sizeof(buf), fp);) {
609 if (!strncmp(buf, S1, sizeof(S1) - 1) ||
610 !strncmp(buf, S2, sizeof(S2) - 1)) {
611 print = 1;
612 continue;
613 } else if (!strncmp(buf, D1, sizeof(D1) - 1) ||
614 !strncmp(buf, D2, sizeof(D2) - 1))
615 return;
616 if (!print)
617 continue;
618 if (*buf == '\n')
619 ++lcnt;
620 else {
621 for(; lcnt; --lcnt)
622 (void)putchar('\n');
623 for (p = buf; isspace((unsigned char)*p); ++p)
624 continue;
625 (void)fputs(p, stdout);
626 }
627 }
628 (void)fclose(fp);
629 }
630
631 /*
632 * cat --
633 * cat out the file
634 */
635 static void
636 cat(fname)
637 char *fname;
638 {
639 int fd, n;
640 char buf[2048];
641
642 if ((fd = open(fname, O_RDONLY, 0)) < 0) {
643 warn("%s", fname);
644 (void)cleanup();
645 exit(1);
646 }
647 while ((n = read(fd, buf, sizeof(buf))) > 0)
648 if (write(STDOUT_FILENO, buf, n) != n) {
649 warn("write");
650 (void)cleanup();
651 exit (1);
652 }
653 if (n == -1) {
654 warn("read");
655 (void)cleanup();
656 exit(1);
657 }
658 (void)close(fd);
659 }
660
661 /*
662 * check_pager --
663 * check the user supplied page information
664 */
665 static char *
666 check_pager(name)
667 char *name;
668 {
669 char *p, *save;
670
671 /*
672 * if the user uses "more", we make it "more -s"; watch out for
673 * PAGER = "mypager /usr/ucb/more"
674 */
675 for (p = name; *p && !isspace((unsigned char)*p); ++p)
676 continue;
677 for (; p > name && *p != '/'; --p);
678 if (p != name)
679 ++p;
680
681 /* make sure it's "more", not "morex" */
682 if (!strncmp(p, "more", 4) && (!p[4] || isspace((unsigned char)p[4]))){
683 save = name;
684 /* allocate space to add the "-s" */
685 if (!(name =
686 malloc((u_int)(strlen(save) + sizeof("-s") + 1))))
687 err(1, "malloc");
688 (void)sprintf(name, "%s %s", save, "-s");
689 }
690 return(name);
691 }
692
693 /*
694 * jump --
695 * strip out flag argument and jump
696 */
697 static void
698 jump(argv, flag, name)
699 char **argv, *flag, *name;
700 {
701 char **arg;
702
703 argv[0] = name;
704 for (arg = argv + 1; *arg; ++arg)
705 if (!strcmp(*arg, flag))
706 break;
707 for (; *arg; ++arg)
708 arg[0] = arg[1];
709 execvp(name, argv);
710 (void)fprintf(stderr, "%s: Command not found.\n", name);
711 exit(1);
712 }
713
714 /*
715 * onsig --
716 * If signaled, delete the temporary files.
717 */
718 static void
719 onsig(signo)
720 int signo;
721 {
722 sigset_t set;
723
724 (void)cleanup();
725
726 (void)signal(signo, SIG_DFL);
727
728 /* unblock the signal */
729 sigemptyset(&set);
730 sigaddset(&set, signo);
731 sigprocmask(SIG_UNBLOCK, &set, (sigset_t *) NULL);
732
733 (void)kill(getpid(), signo);
734
735 /* NOTREACHED */
736 exit (1);
737 }
738
739 /*
740 * cleanup --
741 * Clean up temporary files, show any error messages.
742 */
743 static int
744 cleanup()
745 {
746 TAG *intmpp, *missp;
747 ENTRY *ep;
748 int rval;
749
750 rval = 0;
751 ep = (missp = getlist("_missing")) == NULL ?
752 NULL : missp->list.tqh_first;
753 if (ep != NULL)
754 for (; ep != NULL; ep = ep->q.tqe_next) {
755 warnx("no entry for %s in the manual.", ep->s);
756 rval = 1;
757 }
758
759 ep = (intmpp = getlist("_intmp")) == NULL ?
760 NULL : intmpp->list.tqh_first;
761 for (; ep != NULL; ep = ep->q.tqe_next)
762 (void)unlink(ep->s);
763 return (rval);
764 }
765
766 /*
767 * usage --
768 * print usage message and die
769 */
770 static void
771 usage()
772 {
773 extern char *__progname;
774 (void)fprintf(stderr,
775 "Usage: %s [-achw] [-C file] [-M path] [-m path] [section] title ...\n",
776 __progname);
777 exit(1);
778 }
779