1 /* $Id: main.c,v 1.358 2021/09/04 22:38:46 schwarze Exp $ */
2 /*
3 * Copyright (c) 2010-2012, 2014-2021 Ingo Schwarze <schwarze@openbsd.org>
4 * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
5 * Copyright (c) 2010 Joerg Sonnenberger <joerg@netbsd.org>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 *
19 * Main program for mandoc(1), man(1), apropos(1), whatis(1), and help(1).
20 */
21 #include "config.h"
22
23 #include <sys/types.h>
24 #include <sys/ioctl.h>
25 #include <sys/param.h> /* MACHINE */
26 #include <sys/stat.h>
27 #include <sys/wait.h>
28
29 #include <assert.h>
30 #include <ctype.h>
31 #if HAVE_ERR
32 #include <err.h>
33 #endif
34 #include <errno.h>
35 #include <fcntl.h>
36 #include <glob.h>
37 #include <limits.h>
38 #if HAVE_SANDBOX_INIT
39 #include <sandbox.h>
40 #endif
41 #include <signal.h>
42 #include <stdio.h>
43 #include <stdint.h>
44 #include <stdlib.h>
45 #include <string.h>
46 #include <termios.h>
47 #include <time.h>
48 #include <unistd.h>
49
50 #include "mandoc_aux.h"
51 #include "mandoc.h"
52 #include "mandoc_xr.h"
53 #include "roff.h"
54 #include "mdoc.h"
55 #include "man.h"
56 #include "mandoc_parse.h"
57 #include "tag.h"
58 #include "term_tag.h"
59 #include "main.h"
60 #include "manconf.h"
61 #include "mansearch.h"
62
63 enum outmode {
64 OUTMODE_DEF = 0,
65 OUTMODE_FLN,
66 OUTMODE_LST,
67 OUTMODE_ALL,
68 OUTMODE_ONE
69 };
70
71 enum outt {
72 OUTT_ASCII = 0, /* -Tascii */
73 OUTT_LOCALE, /* -Tlocale */
74 OUTT_UTF8, /* -Tutf8 */
75 OUTT_TREE, /* -Ttree */
76 OUTT_MAN, /* -Tman */
77 OUTT_HTML, /* -Thtml */
78 OUTT_MARKDOWN, /* -Tmarkdown */
79 OUTT_LINT, /* -Tlint */
80 OUTT_PS, /* -Tps */
81 OUTT_PDF /* -Tpdf */
82 };
83
84 struct outstate {
85 struct tag_files *tag_files; /* Tagging state variables. */
86 void *outdata; /* data for output */
87 int use_pager;
88 int wstop; /* stop after a file with a warning */
89 int had_output; /* Some output was generated. */
90 enum outt outtype; /* which output to use */
91 };
92
93
94 int mandocdb(int, char *[]);
95
96 static void check_xr(struct manpaths *);
97 static void fs_append(char **, size_t, int,
98 size_t, const char *, enum form,
99 struct manpage **, size_t *);
100 static int fs_lookup(const struct manpaths *, size_t,
101 const char *, const char *, const char *,
102 struct manpage **, size_t *);
103 static int fs_search(const struct mansearch *,
104 const struct manpaths *, const char *,
105 struct manpage **, size_t *);
106 static void glob_esc(char **, const char *, const char *);
107 static void outdata_alloc(struct outstate *, struct manoutput *);
108 static void parse(struct mparse *, int, const char *,
109 struct outstate *, struct manconf *);
110 static void passthrough(int, int);
111 static void process_onefile(struct mparse *, struct manpage *,
112 int, struct outstate *, struct manconf *);
113 static void run_pager(struct outstate *, char *);
114 static pid_t spawn_pager(struct outstate *, char *);
115 static void usage(enum argmode) __attribute__((__noreturn__));
116 static int woptions(char *, enum mandoc_os *, int *);
117
118 static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
119 static char help_arg[] = "help";
120 static char *help_argv[] = {help_arg, NULL};
121
122
123 int
main(int argc,char * argv[])124 main(int argc, char *argv[])
125 {
126 struct manconf conf; /* Manpaths and output options. */
127 struct outstate outst; /* Output state. */
128 struct winsize ws; /* Result of ioctl(TIOCGWINSZ). */
129 struct mansearch search; /* Search options. */
130 struct manpage *res; /* Complete list of search results. */
131 struct manpage *resn; /* Search results for one name. */
132 struct mparse *mp; /* Opaque parser object. */
133 const char *conf_file; /* -C: alternate config file. */
134 const char *os_s; /* -I: Operating system for display. */
135 const char *progname, *sec, *ep;
136 char *defpaths; /* -M: override manpaths. */
137 char *auxpaths; /* -m: additional manpaths. */
138 char *oarg; /* -O: output option string. */
139 char *tagarg; /* -O tag: default value. */
140 unsigned char *uc;
141 size_t ressz; /* Number of elements in res[]. */
142 size_t resnsz; /* Number of elements in resn[]. */
143 size_t i, ib, ssz;
144 int options; /* Parser options. */
145 int show_usage; /* Invalid argument: give up. */
146 int prio, best_prio;
147 int startdir;
148 int c;
149 enum mandoc_os os_e; /* Check base system conventions. */
150 enum outmode outmode; /* According to command line. */
151
152 #if HAVE_PROGNAME
153 progname = getprogname();
154 #else
155 if (argc < 1)
156 progname = mandoc_strdup("mandoc");
157 else if ((progname = strrchr(argv[0], '/')) == NULL)
158 progname = argv[0];
159 else
160 ++progname;
161 setprogname(progname);
162 #endif
163
164 mandoc_msg_setoutfile(stderr);
165 if (strncmp(progname, "mandocdb", 8) == 0 ||
166 strcmp(progname, BINM_MAKEWHATIS) == 0)
167 return mandocdb(argc, argv);
168
169 #if HAVE_PLEDGE
170 if (pledge("stdio rpath wpath cpath tmppath tty proc exec", NULL) == -1) {
171 mandoc_msg(MANDOCERR_PLEDGE, 0, 0, "%s", strerror(errno));
172 return mandoc_msg_getrc();
173 }
174 #endif
175 #if HAVE_SANDBOX_INIT
176 if (sandbox_init(kSBXProfileNoInternet, SANDBOX_NAMED, NULL) == -1)
177 errx((int)MANDOCLEVEL_SYSERR, "sandbox_init");
178 #endif
179
180 /* Search options. */
181
182 memset(&conf, 0, sizeof(conf));
183 conf_file = NULL;
184 defpaths = auxpaths = NULL;
185
186 memset(&search, 0, sizeof(struct mansearch));
187 search.outkey = "Nd";
188 oarg = NULL;
189
190 if (strcmp(progname, BINM_MAN) == 0)
191 search.argmode = ARG_NAME;
192 else if (strcmp(progname, BINM_APROPOS) == 0)
193 search.argmode = ARG_EXPR;
194 else if (strcmp(progname, BINM_WHATIS) == 0)
195 search.argmode = ARG_WORD;
196 else if (strncmp(progname, "help", 4) == 0)
197 search.argmode = ARG_NAME;
198 else
199 search.argmode = ARG_FILE;
200
201 /* Parser options. */
202
203 options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
204 os_e = MANDOC_OS_OTHER;
205 os_s = NULL;
206
207 /* Formatter options. */
208
209 memset(&outst, 0, sizeof(outst));
210 outst.tag_files = NULL;
211 outst.outtype = OUTT_LOCALE;
212 outst.use_pager = 1;
213
214 show_usage = 0;
215 outmode = OUTMODE_DEF;
216
217 while ((c = getopt(argc, argv,
218 "aC:cfhI:iK:klM:m:O:S:s:T:VW:w")) != -1) {
219 if (c == 'i' && search.argmode == ARG_EXPR) {
220 optind--;
221 break;
222 }
223 switch (c) {
224 case 'a':
225 outmode = OUTMODE_ALL;
226 break;
227 case 'C':
228 conf_file = optarg;
229 break;
230 case 'c':
231 outst.use_pager = 0;
232 break;
233 case 'f':
234 search.argmode = ARG_WORD;
235 break;
236 case 'h':
237 conf.output.synopsisonly = 1;
238 outst.use_pager = 0;
239 outmode = OUTMODE_ALL;
240 break;
241 case 'I':
242 if (strncmp(optarg, "os=", 3) != 0) {
243 mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0,
244 "-I %s", optarg);
245 return mandoc_msg_getrc();
246 }
247 if (os_s != NULL) {
248 mandoc_msg(MANDOCERR_BADARG_DUPE, 0, 0,
249 "-I %s", optarg);
250 return mandoc_msg_getrc();
251 }
252 os_s = optarg + 3;
253 break;
254 case 'K':
255 options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
256 if (strcmp(optarg, "utf-8") == 0)
257 options |= MPARSE_UTF8;
258 else if (strcmp(optarg, "iso-8859-1") == 0)
259 options |= MPARSE_LATIN1;
260 else if (strcmp(optarg, "us-ascii") != 0) {
261 mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0,
262 "-K %s", optarg);
263 return mandoc_msg_getrc();
264 }
265 break;
266 case 'k':
267 search.argmode = ARG_EXPR;
268 break;
269 case 'l':
270 search.argmode = ARG_FILE;
271 outmode = OUTMODE_ALL;
272 break;
273 case 'M':
274 #ifdef __FreeBSD__
275 defpaths = strdup(optarg);
276 if (defpaths == NULL)
277 err(1, "strdup");
278 #else
279 defpaths = optarg;
280 #endif
281 break;
282 case 'm':
283 auxpaths = optarg;
284 break;
285 case 'O':
286 oarg = optarg;
287 break;
288 case 'S':
289 search.arch = optarg;
290 break;
291 case 's':
292 search.sec = optarg;
293 break;
294 case 'T':
295 if (strcmp(optarg, "ascii") == 0)
296 outst.outtype = OUTT_ASCII;
297 else if (strcmp(optarg, "lint") == 0) {
298 outst.outtype = OUTT_LINT;
299 mandoc_msg_setoutfile(stdout);
300 mandoc_msg_setmin(MANDOCERR_BASE);
301 } else if (strcmp(optarg, "tree") == 0)
302 outst.outtype = OUTT_TREE;
303 else if (strcmp(optarg, "man") == 0)
304 outst.outtype = OUTT_MAN;
305 else if (strcmp(optarg, "html") == 0)
306 outst.outtype = OUTT_HTML;
307 else if (strcmp(optarg, "markdown") == 0)
308 outst.outtype = OUTT_MARKDOWN;
309 else if (strcmp(optarg, "utf8") == 0)
310 outst.outtype = OUTT_UTF8;
311 else if (strcmp(optarg, "locale") == 0)
312 outst.outtype = OUTT_LOCALE;
313 else if (strcmp(optarg, "ps") == 0)
314 outst.outtype = OUTT_PS;
315 else if (strcmp(optarg, "pdf") == 0)
316 outst.outtype = OUTT_PDF;
317 else {
318 mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0,
319 "-T %s", optarg);
320 return mandoc_msg_getrc();
321 }
322 break;
323 case 'W':
324 if (woptions(optarg, &os_e, &outst.wstop) == -1)
325 return mandoc_msg_getrc();
326 break;
327 case 'w':
328 outmode = OUTMODE_FLN;
329 break;
330 default:
331 show_usage = 1;
332 break;
333 }
334 }
335
336 if (show_usage)
337 usage(search.argmode);
338
339 /* Postprocess options. */
340
341 switch (outmode) {
342 case OUTMODE_DEF:
343 switch (search.argmode) {
344 case ARG_FILE:
345 outmode = OUTMODE_ALL;
346 outst.use_pager = 0;
347 break;
348 case ARG_NAME:
349 outmode = OUTMODE_ONE;
350 break;
351 default:
352 outmode = OUTMODE_LST;
353 break;
354 }
355 break;
356 case OUTMODE_FLN:
357 if (search.argmode == ARG_FILE)
358 outmode = OUTMODE_ALL;
359 break;
360 case OUTMODE_ALL:
361 break;
362 case OUTMODE_LST:
363 case OUTMODE_ONE:
364 abort();
365 }
366
367 if (oarg != NULL) {
368 if (outmode == OUTMODE_LST)
369 search.outkey = oarg;
370 else {
371 while (oarg != NULL) {
372 if (manconf_output(&conf.output,
373 strsep(&oarg, ","), 0) == -1)
374 return mandoc_msg_getrc();
375 }
376 }
377 }
378
379 if (outst.outtype != OUTT_TREE || conf.output.noval == 0)
380 options |= MPARSE_VALIDATE;
381
382 if (outmode == OUTMODE_FLN ||
383 outmode == OUTMODE_LST ||
384 (conf.output.outfilename == NULL &&
385 conf.output.tagfilename == NULL &&
386 isatty(STDOUT_FILENO) == 0))
387 outst.use_pager = 0;
388
389 if (outst.use_pager &&
390 (conf.output.width == 0 || conf.output.indent == 0) &&
391 ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1 &&
392 ws.ws_col > 1) {
393 if (conf.output.width == 0 && ws.ws_col < 79)
394 conf.output.width = ws.ws_col - 1;
395 if (conf.output.indent == 0 && ws.ws_col < 66)
396 conf.output.indent = 3;
397 }
398
399 #if HAVE_PLEDGE
400 if (outst.use_pager == 0)
401 c = pledge("stdio rpath", NULL);
402 else if (conf.output.outfilename != NULL ||
403 conf.output.tagfilename != NULL)
404 c = pledge("stdio rpath wpath cpath", NULL);
405 else
406 c = pledge("stdio rpath tmppath tty proc exec", NULL);
407 if (c == -1) {
408 mandoc_msg(MANDOCERR_PLEDGE, 0, 0, "%s", strerror(errno));
409 return mandoc_msg_getrc();
410 }
411 #endif
412
413 /* Parse arguments. */
414
415 if (argc > 0) {
416 argc -= optind;
417 argv += optind;
418 }
419
420 /*
421 * Quirks for help(1) and man(1),
422 * in particular for a section argument without -s.
423 */
424
425 if (search.argmode == ARG_NAME) {
426 if (*progname == 'h') {
427 if (argc == 0) {
428 argv = help_argv;
429 argc = 1;
430 }
431 } else if (argc > 1 &&
432 ((uc = (unsigned char *)argv[0]) != NULL) &&
433 ((isdigit(uc[0]) && (uc[1] == '\0' ||
434 isalpha(uc[1]))) ||
435 (uc[0] == 'n' && uc[1] == '\0'))) {
436 search.sec = (char *)uc;
437 argv++;
438 argc--;
439 }
440 if (search.arch == NULL)
441 search.arch = getenv("MACHINE");
442 #ifdef MACHINE
443 if (search.arch == NULL)
444 search.arch = MACHINE;
445 #endif
446 if (outmode == OUTMODE_ONE)
447 search.firstmatch = 1;
448 }
449
450 /*
451 * Use the first argument for -O tag in addition to
452 * using it as a search term for man(1) or apropos(1).
453 */
454
455 if (conf.output.tag != NULL && *conf.output.tag == '\0') {
456 tagarg = argc > 0 && search.argmode == ARG_EXPR ?
457 strchr(*argv, '=') : NULL;
458 conf.output.tag = tagarg == NULL ? *argv : tagarg + 1;
459 }
460
461 if (search.argmode != ARG_FILE ||
462 mandoc_msg_getmin() == MANDOCERR_STYLE)
463 #ifdef __FreeBSD__
464 {
465 /*
466 * Use manpath(1) to populate defpaths if -M is not specified.
467 * Don't treat any failures as fatal.
468 */
469 if (defpaths == NULL) {
470 FILE *fp;
471 size_t linecap = 0;
472 ssize_t linelen;
473
474 if ((fp = popen("/usr/bin/manpath -q", "r")) != NULL) {
475 if ((linelen = getline(&defpaths,
476 &linecap, fp)) > 0) {
477 /* Strip trailing newline */
478 defpaths[linelen - 1] = '\0';
479 }
480 pclose(fp);
481 }
482 }
483 #endif
484 /* Read the configuration file. */
485 manconf_parse(&conf, conf_file, defpaths, auxpaths);
486 #ifdef __FreeBSD__
487 free(defpaths);
488 }
489 #endif
490
491 /* man(1): Resolve each name individually. */
492
493 if (search.argmode == ARG_NAME) {
494 if (argc < 1) {
495 if (outmode != OUTMODE_FLN)
496 usage(ARG_NAME);
497 if (conf.manpath.sz == 0) {
498 warnx("The manpath is empty.");
499 mandoc_msg_setrc(MANDOCLEVEL_BADARG);
500 } else {
501 for (i = 0; i + 1 < conf.manpath.sz; i++)
502 printf("%s:", conf.manpath.paths[i]);
503 printf("%s\n", conf.manpath.paths[i]);
504 }
505 manconf_free(&conf);
506 return (int)mandoc_msg_getrc();
507 }
508 for (res = NULL, ressz = 0; argc > 0; argc--, argv++) {
509 (void)mansearch(&search, &conf.manpath,
510 1, argv, &resn, &resnsz);
511 if (resnsz == 0)
512 (void)fs_search(&search, &conf.manpath,
513 *argv, &resn, &resnsz);
514 if (resnsz == 0 && strchr(*argv, '/') == NULL) {
515 if (search.arch != NULL &&
516 arch_valid(search.arch, OSENUM) == 0)
517 warnx("Unknown architecture \"%s\".",
518 search.arch);
519 else if (search.sec != NULL)
520 warnx("No entry for %s in "
521 "section %s of the manual.",
522 *argv, search.sec);
523 else
524 warnx("No entry for %s in "
525 "the manual.", *argv);
526 mandoc_msg_setrc(MANDOCLEVEL_BADARG);
527 continue;
528 }
529 if (resnsz == 0) {
530 if (access(*argv, R_OK) == -1) {
531 mandoc_msg_setinfilename(*argv);
532 mandoc_msg(MANDOCERR_BADARG_BAD,
533 0, 0, "%s", strerror(errno));
534 mandoc_msg_setinfilename(NULL);
535 continue;
536 }
537 resnsz = 1;
538 resn = mandoc_calloc(resnsz, sizeof(*res));
539 resn->file = mandoc_strdup(*argv);
540 resn->ipath = SIZE_MAX;
541 resn->form = FORM_SRC;
542 }
543 if (outmode != OUTMODE_ONE || resnsz == 1) {
544 res = mandoc_reallocarray(res,
545 ressz + resnsz, sizeof(*res));
546 memcpy(res + ressz, resn,
547 sizeof(*resn) * resnsz);
548 ressz += resnsz;
549 continue;
550 }
551
552 /* Search for the best section. */
553
554 best_prio = 40;
555 for (ib = i = 0; i < resnsz; i++) {
556 sec = resn[i].file;
557 sec += strcspn(sec, "123456789");
558 if (sec[0] == '\0')
559 continue; /* No section at all. */
560 prio = sec_prios[sec[0] - '1'];
561 if (search.sec != NULL) {
562 ssz = strlen(search.sec);
563 if (strncmp(sec, search.sec, ssz) == 0)
564 sec += ssz;
565 } else
566 sec++; /* Prefer without suffix. */
567 if (*sec != '/')
568 prio += 10; /* Wrong dir name. */
569 if (search.sec != NULL) {
570 ep = strchr(sec, '\0');
571 if (ep - sec > 3 &&
572 strncmp(ep - 3, ".gz", 3) == 0)
573 ep -= 3;
574 if ((size_t)(ep - sec) < ssz + 3 ||
575 strncmp(ep - ssz, search.sec,
576 ssz) != 0) /* Wrong file */
577 prio += 20; /* extension. */
578 }
579 if (prio >= best_prio)
580 continue;
581 best_prio = prio;
582 ib = i;
583 }
584 res = mandoc_reallocarray(res, ressz + 1,
585 sizeof(*res));
586 memcpy(res + ressz++, resn + ib, sizeof(*resn));
587 }
588
589 /* apropos(1), whatis(1): Process the full search expression. */
590
591 } else if (search.argmode != ARG_FILE) {
592 if (mansearch(&search, &conf.manpath,
593 argc, argv, &res, &ressz) == 0)
594 usage(search.argmode);
595
596 if (ressz == 0) {
597 warnx("nothing appropriate");
598 mandoc_msg_setrc(MANDOCLEVEL_BADARG);
599 goto out;
600 }
601
602 /* mandoc(1): Take command line arguments as file names. */
603
604 } else {
605 ressz = argc > 0 ? argc : 1;
606 res = mandoc_calloc(ressz, sizeof(*res));
607 for (i = 0; i < ressz; i++) {
608 if (argc > 0)
609 res[i].file = mandoc_strdup(argv[i]);
610 res[i].ipath = SIZE_MAX;
611 res[i].form = FORM_SRC;
612 }
613 }
614
615 switch (outmode) {
616 case OUTMODE_FLN:
617 for (i = 0; i < ressz; i++)
618 puts(res[i].file);
619 goto out;
620 case OUTMODE_LST:
621 for (i = 0; i < ressz; i++)
622 printf("%s - %s\n", res[i].names,
623 res[i].output == NULL ? "" :
624 res[i].output);
625 goto out;
626 default:
627 break;
628 }
629
630 if (search.argmode == ARG_FILE && auxpaths != NULL) {
631 if (strcmp(auxpaths, "doc") == 0)
632 options |= MPARSE_MDOC;
633 else if (strcmp(auxpaths, "an") == 0)
634 options |= MPARSE_MAN;
635 }
636
637 mchars_alloc();
638 mp = mparse_alloc(options, os_e, os_s);
639
640 /*
641 * Remember the original working directory, if possible.
642 * This will be needed if some names on the command line
643 * are page names and some are relative file names.
644 * Do not error out if the current directory is not
645 * readable: Maybe it won't be needed after all.
646 */
647 startdir = open(".", O_RDONLY | O_DIRECTORY);
648 for (i = 0; i < ressz; i++) {
649 process_onefile(mp, res + i, startdir, &outst, &conf);
650 if (outst.wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
651 break;
652 }
653 if (startdir != -1) {
654 (void)fchdir(startdir);
655 close(startdir);
656 }
657 if (conf.output.tag != NULL && conf.output.tag_found == 0) {
658 mandoc_msg(MANDOCERR_TAG, 0, 0, "%s", conf.output.tag);
659 conf.output.tag = NULL;
660 }
661 if (outst.outdata != NULL) {
662 switch (outst.outtype) {
663 case OUTT_HTML:
664 html_free(outst.outdata);
665 break;
666 case OUTT_UTF8:
667 case OUTT_LOCALE:
668 case OUTT_ASCII:
669 ascii_free(outst.outdata);
670 break;
671 case OUTT_PDF:
672 case OUTT_PS:
673 pspdf_free(outst.outdata);
674 break;
675 default:
676 break;
677 }
678 }
679 mandoc_xr_free();
680 mparse_free(mp);
681 mchars_free();
682
683 out:
684 mansearch_free(res, ressz);
685 if (search.argmode != ARG_FILE)
686 manconf_free(&conf);
687
688 if (outst.tag_files != NULL) {
689 if (term_tag_close() != -1 &&
690 conf.output.outfilename == NULL &&
691 conf.output.tagfilename == NULL)
692 run_pager(&outst, conf.output.tag);
693 term_tag_unlink();
694 } else if (outst.had_output && outst.outtype != OUTT_LINT)
695 mandoc_msg_summary();
696
697 return (int)mandoc_msg_getrc();
698 }
699
700 static void
usage(enum argmode argmode)701 usage(enum argmode argmode)
702 {
703 switch (argmode) {
704 case ARG_FILE:
705 fputs("usage: mandoc [-ac] [-I os=name] "
706 "[-K encoding] [-mdoc | -man] [-O options]\n"
707 "\t [-T output] [-W level] [file ...]\n", stderr);
708 break;
709 case ARG_NAME:
710 fputs("usage: man [-acfhklw] [-C file] [-M path] "
711 "[-m path] [-S subsection]\n"
712 "\t [[-s] section] name ...\n", stderr);
713 break;
714 case ARG_WORD:
715 fputs("usage: whatis [-afk] [-C file] "
716 "[-M path] [-m path] [-O outkey] [-S arch]\n"
717 "\t [-s section] name ...\n", stderr);
718 break;
719 case ARG_EXPR:
720 fputs("usage: apropos [-afk] [-C file] "
721 "[-M path] [-m path] [-O outkey] [-S arch]\n"
722 "\t [-s section] expression ...\n", stderr);
723 break;
724 }
725 exit((int)MANDOCLEVEL_BADARG);
726 }
727
728 static void
glob_esc(char ** dst,const char * src,const char * suffix)729 glob_esc(char **dst, const char *src, const char *suffix)
730 {
731 while (*src != '\0') {
732 if (strchr("*?[", *src) != NULL)
733 *(*dst)++ = '\\';
734 *(*dst)++ = *src++;
735 }
736 while (*suffix != '\0')
737 *(*dst)++ = *suffix++;
738 }
739
740 static void
fs_append(char ** file,size_t filesz,int copy,size_t ipath,const char * sec,enum form form,struct manpage ** res,size_t * ressz)741 fs_append(char **file, size_t filesz, int copy, size_t ipath,
742 const char *sec, enum form form, struct manpage **res, size_t *ressz)
743 {
744 struct manpage *page;
745
746 *res = mandoc_reallocarray(*res, *ressz + filesz, sizeof(**res));
747 page = *res + *ressz;
748 *ressz += filesz;
749 for (;;) {
750 page->file = copy ? mandoc_strdup(*file) : *file;
751 page->names = NULL;
752 page->output = NULL;
753 page->bits = NAME_FILE & NAME_MASK;
754 page->ipath = ipath;
755 page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
756 page->form = form;
757 if (--filesz == 0)
758 break;
759 file++;
760 page++;
761 }
762 }
763
764 static int
fs_lookup(const struct manpaths * paths,size_t ipath,const char * sec,const char * arch,const char * name,struct manpage ** res,size_t * ressz)765 fs_lookup(const struct manpaths *paths, size_t ipath,
766 const char *sec, const char *arch, const char *name,
767 struct manpage **res, size_t *ressz)
768 {
769 struct stat sb;
770 glob_t globinfo;
771 char *file, *cp, secnum[2];
772 int globres;
773 enum form form;
774
775 const char *const slman = "/man";
776 const char *const slash = "/";
777 const char *const sglob = ".[01-9]*";
778 const char *const dot = ".";
779 const char *const aster = "*";
780
781 memset(&globinfo, 0, sizeof(globinfo));
782 form = FORM_SRC;
783
784 mandoc_asprintf(&file, "%s/man%s/%s.%s",
785 paths->paths[ipath], sec, name, sec);
786 if (stat(file, &sb) != -1)
787 goto found;
788 free(file);
789
790 mandoc_asprintf(&file, "%s/cat%s/%s.0",
791 paths->paths[ipath], sec, name);
792 if (stat(file, &sb) != -1) {
793 form = FORM_CAT;
794 goto found;
795 }
796 free(file);
797
798 if (arch != NULL) {
799 mandoc_asprintf(&file, "%s/man%s/%s/%s.%s",
800 paths->paths[ipath], sec, arch, name, sec);
801 if (stat(file, &sb) != -1)
802 goto found;
803 free(file);
804 }
805
806 cp = file = mandoc_malloc(strlen(paths->paths[ipath]) * 2 +
807 strlen(slman) + strlen(sec) * 2 + strlen(slash) +
808 strlen(name) * 2 + strlen(sglob) + 1);
809 glob_esc(&cp, paths->paths[ipath], slman);
810 glob_esc(&cp, sec, slash);
811 glob_esc(&cp, name, sglob);
812 *cp = '\0';
813 globres = glob(file, 0, NULL, &globinfo);
814 if (globres != 0 && globres != GLOB_NOMATCH)
815 mandoc_msg(MANDOCERR_GLOB, 0, 0,
816 "%s: %s", file, strerror(errno));
817 free(file);
818 file = NULL;
819 if (globres == 0)
820 goto found;
821 globfree(&globinfo);
822
823 if (sec[1] != '\0' && *ressz == 0) {
824 secnum[0] = sec[0];
825 secnum[1] = '\0';
826 cp = file = mandoc_malloc(strlen(paths->paths[ipath]) * 2 +
827 strlen(slman) + strlen(secnum) * 2 + strlen(slash) +
828 strlen(name) * 2 + strlen(dot) +
829 strlen(sec) * 2 + strlen(aster) + 1);
830 glob_esc(&cp, paths->paths[ipath], slman);
831 glob_esc(&cp, secnum, slash);
832 glob_esc(&cp, name, dot);
833 glob_esc(&cp, sec, aster);
834 *cp = '\0';
835 globres = glob(file, 0, NULL, &globinfo);
836 if (globres != 0 && globres != GLOB_NOMATCH)
837 mandoc_msg(MANDOCERR_GLOB, 0, 0,
838 "%s: %s", file, strerror(errno));
839 free(file);
840 file = NULL;
841 if (globres == 0)
842 goto found;
843 globfree(&globinfo);
844 }
845
846 if (res != NULL || ipath + 1 != paths->sz)
847 return -1;
848
849 mandoc_asprintf(&file, "%s.%s", name, sec);
850 globres = stat(file, &sb);
851 free(file);
852 return globres;
853
854 found:
855 warnx("outdated mandoc.db lacks %s(%s) entry, run %s %s",
856 name, sec, BINM_MAKEWHATIS, paths->paths[ipath]);
857 if (res == NULL)
858 free(file);
859 else if (file == NULL)
860 fs_append(globinfo.gl_pathv, globinfo.gl_pathc, 1,
861 ipath, sec, form, res, ressz);
862 else
863 fs_append(&file, 1, 0, ipath, sec, form, res, ressz);
864 globfree(&globinfo);
865 return 0;
866 }
867
868 static int
fs_search(const struct mansearch * cfg,const struct manpaths * paths,const char * name,struct manpage ** res,size_t * ressz)869 fs_search(const struct mansearch *cfg, const struct manpaths *paths,
870 const char *name, struct manpage **res, size_t *ressz)
871 {
872 const char *const sections[] =
873 {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"};
874 const size_t nsec = sizeof(sections)/sizeof(sections[0]);
875
876 size_t ipath, isec;
877
878 assert(cfg->argmode == ARG_NAME);
879 if (res != NULL)
880 *res = NULL;
881 *ressz = 0;
882 for (ipath = 0; ipath < paths->sz; ipath++) {
883 if (cfg->sec != NULL) {
884 if (fs_lookup(paths, ipath, cfg->sec, cfg->arch,
885 name, res, ressz) != -1 && cfg->firstmatch)
886 return 0;
887 } else {
888 for (isec = 0; isec < nsec; isec++)
889 if (fs_lookup(paths, ipath, sections[isec],
890 cfg->arch, name, res, ressz) != -1 &&
891 cfg->firstmatch)
892 return 0;
893 }
894 }
895 return -1;
896 }
897
898 static void
process_onefile(struct mparse * mp,struct manpage * resp,int startdir,struct outstate * outst,struct manconf * conf)899 process_onefile(struct mparse *mp, struct manpage *resp, int startdir,
900 struct outstate *outst, struct manconf *conf)
901 {
902 int fd;
903
904 /*
905 * Changing directories is not needed in ARG_FILE mode.
906 * Do it on a best-effort basis. Even in case of
907 * failure, some functionality may still work.
908 */
909 if (resp->ipath != SIZE_MAX)
910 (void)chdir(conf->manpath.paths[resp->ipath]);
911 else if (startdir != -1)
912 (void)fchdir(startdir);
913
914 mandoc_msg_setinfilename(resp->file);
915 if (resp->file != NULL) {
916 if ((fd = mparse_open(mp, resp->file)) == -1) {
917 mandoc_msg(resp->ipath == SIZE_MAX ?
918 MANDOCERR_BADARG_BAD : MANDOCERR_OPEN,
919 0, 0, "%s", strerror(errno));
920 mandoc_msg_setinfilename(NULL);
921 return;
922 }
923 } else
924 fd = STDIN_FILENO;
925
926 if (outst->use_pager) {
927 outst->use_pager = 0;
928 outst->tag_files = term_tag_init(conf->output.outfilename,
929 outst->outtype == OUTT_HTML ? ".html" : "",
930 conf->output.tagfilename);
931 #if HAVE_PLEDGE
932 if ((conf->output.outfilename != NULL ||
933 conf->output.tagfilename != NULL) &&
934 pledge("stdio rpath cpath", NULL) == -1) {
935 mandoc_msg(MANDOCERR_PLEDGE, 0, 0,
936 "%s", strerror(errno));
937 exit(mandoc_msg_getrc());
938 }
939 #endif
940 }
941 if (outst->had_output && outst->outtype <= OUTT_UTF8) {
942 if (outst->outdata == NULL)
943 outdata_alloc(outst, &conf->output);
944 terminal_sepline(outst->outdata);
945 }
946
947 if (resp->form == FORM_SRC)
948 parse(mp, fd, resp->file, outst, conf);
949 else {
950 passthrough(fd, conf->output.synopsisonly);
951 outst->had_output = 1;
952 }
953
954 if (ferror(stdout)) {
955 if (outst->tag_files != NULL) {
956 mandoc_msg(MANDOCERR_WRITE, 0, 0, "%s: %s",
957 outst->tag_files->ofn, strerror(errno));
958 term_tag_unlink();
959 outst->tag_files = NULL;
960 } else
961 mandoc_msg(MANDOCERR_WRITE, 0, 0, "%s",
962 strerror(errno));
963 }
964 mandoc_msg_setinfilename(NULL);
965 }
966
967 static void
parse(struct mparse * mp,int fd,const char * file,struct outstate * outst,struct manconf * conf)968 parse(struct mparse *mp, int fd, const char *file,
969 struct outstate *outst, struct manconf *conf)
970 {
971 static struct manpaths basepaths;
972 static int previous;
973 struct roff_meta *meta;
974
975 assert(fd >= 0);
976 if (file == NULL)
977 file = "<stdin>";
978
979 if (previous)
980 mparse_reset(mp);
981 else
982 previous = 1;
983
984 mparse_readfd(mp, fd, file);
985 if (fd != STDIN_FILENO)
986 close(fd);
987
988 /*
989 * With -Wstop and warnings or errors of at least the requested
990 * level, do not produce output.
991 */
992
993 if (outst->wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
994 return;
995
996 if (outst->outdata == NULL)
997 outdata_alloc(outst, &conf->output);
998 else if (outst->outtype == OUTT_HTML)
999 html_reset(outst->outdata);
1000
1001 mandoc_xr_reset();
1002 meta = mparse_result(mp);
1003
1004 /* Execute the out device, if it exists. */
1005
1006 outst->had_output = 1;
1007 if (meta->macroset == MACROSET_MDOC) {
1008 switch (outst->outtype) {
1009 case OUTT_HTML:
1010 html_mdoc(outst->outdata, meta);
1011 break;
1012 case OUTT_TREE:
1013 tree_mdoc(outst->outdata, meta);
1014 break;
1015 case OUTT_MAN:
1016 man_mdoc(outst->outdata, meta);
1017 break;
1018 case OUTT_PDF:
1019 case OUTT_ASCII:
1020 case OUTT_UTF8:
1021 case OUTT_LOCALE:
1022 case OUTT_PS:
1023 terminal_mdoc(outst->outdata, meta);
1024 break;
1025 case OUTT_MARKDOWN:
1026 markdown_mdoc(outst->outdata, meta);
1027 break;
1028 default:
1029 break;
1030 }
1031 }
1032 if (meta->macroset == MACROSET_MAN) {
1033 switch (outst->outtype) {
1034 case OUTT_HTML:
1035 html_man(outst->outdata, meta);
1036 break;
1037 case OUTT_TREE:
1038 tree_man(outst->outdata, meta);
1039 break;
1040 case OUTT_MAN:
1041 mparse_copy(mp);
1042 break;
1043 case OUTT_PDF:
1044 case OUTT_ASCII:
1045 case OUTT_UTF8:
1046 case OUTT_LOCALE:
1047 case OUTT_PS:
1048 terminal_man(outst->outdata, meta);
1049 break;
1050 case OUTT_MARKDOWN:
1051 mandoc_msg(MANDOCERR_MAN_TMARKDOWN, 0, 0, NULL);
1052 break;
1053 default:
1054 break;
1055 }
1056 }
1057 if (conf->output.tag != NULL && conf->output.tag_found == 0 &&
1058 tag_exists(conf->output.tag))
1059 conf->output.tag_found = 1;
1060
1061 if (mandoc_msg_getmin() < MANDOCERR_STYLE) {
1062 if (basepaths.sz == 0)
1063 manpath_base(&basepaths);
1064 check_xr(&basepaths);
1065 } else if (mandoc_msg_getmin() < MANDOCERR_WARNING)
1066 check_xr(&conf->manpath);
1067 }
1068
1069 static void
check_xr(struct manpaths * paths)1070 check_xr(struct manpaths *paths)
1071 {
1072 struct mansearch search;
1073 struct mandoc_xr *xr;
1074 size_t sz;
1075
1076 for (xr = mandoc_xr_get(); xr != NULL; xr = xr->next) {
1077 if (xr->line == -1)
1078 continue;
1079 search.arch = NULL;
1080 search.sec = xr->sec;
1081 search.outkey = NULL;
1082 search.argmode = ARG_NAME;
1083 search.firstmatch = 1;
1084 if (mansearch(&search, paths, 1, &xr->name, NULL, &sz))
1085 continue;
1086 if (fs_search(&search, paths, xr->name, NULL, &sz) != -1)
1087 continue;
1088 if (xr->count == 1)
1089 mandoc_msg(MANDOCERR_XR_BAD, xr->line,
1090 xr->pos + 1, "Xr %s %s", xr->name, xr->sec);
1091 else
1092 mandoc_msg(MANDOCERR_XR_BAD, xr->line,
1093 xr->pos + 1, "Xr %s %s (%d times)",
1094 xr->name, xr->sec, xr->count);
1095 }
1096 }
1097
1098 static void
outdata_alloc(struct outstate * outst,struct manoutput * outconf)1099 outdata_alloc(struct outstate *outst, struct manoutput *outconf)
1100 {
1101 switch (outst->outtype) {
1102 case OUTT_HTML:
1103 outst->outdata = html_alloc(outconf);
1104 break;
1105 case OUTT_UTF8:
1106 outst->outdata = utf8_alloc(outconf);
1107 break;
1108 case OUTT_LOCALE:
1109 outst->outdata = locale_alloc(outconf);
1110 break;
1111 case OUTT_ASCII:
1112 outst->outdata = ascii_alloc(outconf);
1113 break;
1114 case OUTT_PDF:
1115 outst->outdata = pdf_alloc(outconf);
1116 break;
1117 case OUTT_PS:
1118 outst->outdata = ps_alloc(outconf);
1119 break;
1120 default:
1121 break;
1122 }
1123 }
1124
1125 static void
passthrough(int fd,int synopsis_only)1126 passthrough(int fd, int synopsis_only)
1127 {
1128 const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
1129 const char synr[] = "SYNOPSIS";
1130
1131 FILE *stream;
1132 char *line, *cp;
1133 size_t linesz;
1134 ssize_t len, written;
1135 int lno, print;
1136
1137 stream = NULL;
1138 line = NULL;
1139 linesz = 0;
1140
1141 if (fflush(stdout) == EOF) {
1142 mandoc_msg(MANDOCERR_FFLUSH, 0, 0, "%s", strerror(errno));
1143 goto done;
1144 }
1145 if ((stream = fdopen(fd, "r")) == NULL) {
1146 close(fd);
1147 mandoc_msg(MANDOCERR_FDOPEN, 0, 0, "%s", strerror(errno));
1148 goto done;
1149 }
1150
1151 lno = print = 0;
1152 while ((len = getline(&line, &linesz, stream)) != -1) {
1153 lno++;
1154 cp = line;
1155 if (synopsis_only) {
1156 if (print) {
1157 if ( ! isspace((unsigned char)*cp))
1158 goto done;
1159 while (isspace((unsigned char)*cp)) {
1160 cp++;
1161 len--;
1162 }
1163 } else {
1164 if (strcmp(cp, synb) == 0 ||
1165 strcmp(cp, synr) == 0)
1166 print = 1;
1167 continue;
1168 }
1169 }
1170 for (; len > 0; len -= written) {
1171 if ((written = write(STDOUT_FILENO, cp, len)) == -1) {
1172 mandoc_msg(MANDOCERR_WRITE, 0, 0,
1173 "%s", strerror(errno));
1174 goto done;
1175 }
1176 }
1177 }
1178 if (ferror(stream))
1179 mandoc_msg(MANDOCERR_GETLINE, lno, 0, "%s", strerror(errno));
1180
1181 done:
1182 free(line);
1183 if (stream != NULL)
1184 fclose(stream);
1185 }
1186
1187 static int
woptions(char * arg,enum mandoc_os * os_e,int * wstop)1188 woptions(char *arg, enum mandoc_os *os_e, int *wstop)
1189 {
1190 char *v, *o;
1191 const char *toks[11];
1192
1193 toks[0] = "stop";
1194 toks[1] = "all";
1195 toks[2] = "base";
1196 toks[3] = "style";
1197 toks[4] = "warning";
1198 toks[5] = "error";
1199 toks[6] = "unsupp";
1200 toks[7] = "fatal";
1201 toks[8] = "openbsd";
1202 toks[9] = "netbsd";
1203 toks[10] = NULL;
1204
1205 while (*arg) {
1206 o = arg;
1207 switch (getsubopt(&arg, (char * const *)toks, &v)) {
1208 case 0:
1209 *wstop = 1;
1210 break;
1211 case 1:
1212 case 2:
1213 mandoc_msg_setmin(MANDOCERR_BASE);
1214 break;
1215 case 3:
1216 mandoc_msg_setmin(MANDOCERR_STYLE);
1217 break;
1218 case 4:
1219 mandoc_msg_setmin(MANDOCERR_WARNING);
1220 break;
1221 case 5:
1222 mandoc_msg_setmin(MANDOCERR_ERROR);
1223 break;
1224 case 6:
1225 mandoc_msg_setmin(MANDOCERR_UNSUPP);
1226 break;
1227 case 7:
1228 mandoc_msg_setmin(MANDOCERR_BADARG);
1229 break;
1230 case 8:
1231 mandoc_msg_setmin(MANDOCERR_BASE);
1232 *os_e = MANDOC_OS_OPENBSD;
1233 break;
1234 case 9:
1235 mandoc_msg_setmin(MANDOCERR_BASE);
1236 *os_e = MANDOC_OS_NETBSD;
1237 break;
1238 default:
1239 mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, "-W %s", o);
1240 return -1;
1241 }
1242 }
1243 return 0;
1244 }
1245
1246 /*
1247 * Wait until moved to the foreground,
1248 * then fork the pager and wait for the user to close it.
1249 */
1250 static void
run_pager(struct outstate * outst,char * tag_target)1251 run_pager(struct outstate *outst, char *tag_target)
1252 {
1253 int signum, status;
1254 pid_t man_pgid, tc_pgid;
1255 pid_t pager_pid, wait_pid;
1256
1257 man_pgid = getpgid(0);
1258 outst->tag_files->tcpgid =
1259 man_pgid == getpid() ? getpgid(getppid()) : man_pgid;
1260 pager_pid = 0;
1261 signum = SIGSTOP;
1262
1263 for (;;) {
1264 /* Stop here until moved to the foreground. */
1265
1266 tc_pgid = tcgetpgrp(STDOUT_FILENO);
1267 if (tc_pgid != man_pgid) {
1268 if (tc_pgid == pager_pid) {
1269 (void)tcsetpgrp(STDOUT_FILENO, man_pgid);
1270 if (signum == SIGTTIN)
1271 continue;
1272 } else
1273 outst->tag_files->tcpgid = tc_pgid;
1274 kill(0, signum);
1275 continue;
1276 }
1277
1278 /* Once in the foreground, activate the pager. */
1279
1280 if (pager_pid) {
1281 (void)tcsetpgrp(STDOUT_FILENO, pager_pid);
1282 kill(pager_pid, SIGCONT);
1283 } else
1284 pager_pid = spawn_pager(outst, tag_target);
1285
1286 /* Wait for the pager to stop or exit. */
1287
1288 while ((wait_pid = waitpid(pager_pid, &status,
1289 WUNTRACED)) == -1 && errno == EINTR)
1290 continue;
1291
1292 if (wait_pid == -1) {
1293 mandoc_msg(MANDOCERR_WAIT, 0, 0,
1294 "%s", strerror(errno));
1295 break;
1296 }
1297 if (!WIFSTOPPED(status))
1298 break;
1299
1300 signum = WSTOPSIG(status);
1301 }
1302 }
1303
1304 static pid_t
spawn_pager(struct outstate * outst,char * tag_target)1305 spawn_pager(struct outstate *outst, char *tag_target)
1306 {
1307 const struct timespec timeout = { 0, 100000000 }; /* 0.1s */
1308 #define MAX_PAGER_ARGS 16
1309 char *argv[MAX_PAGER_ARGS];
1310 const char *pager;
1311 char *cp;
1312 #if HAVE_LESS_T
1313 size_t cmdlen;
1314 #endif
1315 int argc, use_ofn;
1316 pid_t pager_pid;
1317
1318 assert(outst->tag_files->ofd == -1);
1319 assert(outst->tag_files->tfs == NULL);
1320
1321 pager = getenv("MANPAGER");
1322 if (pager == NULL || *pager == '\0')
1323 pager = getenv("PAGER");
1324 if (pager == NULL || *pager == '\0')
1325 pager = BINM_PAGER;
1326 cp = mandoc_strdup(pager);
1327
1328 /*
1329 * Parse the pager command into words.
1330 * Intentionally do not do anything fancy here.
1331 */
1332
1333 argc = 0;
1334 while (argc + 5 < MAX_PAGER_ARGS) {
1335 argv[argc++] = cp;
1336 cp = strchr(cp, ' ');
1337 if (cp == NULL)
1338 break;
1339 *cp++ = '\0';
1340 while (*cp == ' ')
1341 cp++;
1342 if (*cp == '\0')
1343 break;
1344 }
1345
1346 /* For less(1), use the tag file. */
1347
1348 use_ofn = 1;
1349 #if HAVE_LESS_T
1350 if (*outst->tag_files->tfn != '\0' &&
1351 (cmdlen = strlen(argv[0])) >= 4) {
1352 cp = argv[0] + cmdlen - 4;
1353 if (strcmp(cp, "less") == 0) {
1354 argv[argc++] = mandoc_strdup("-T");
1355 argv[argc++] = outst->tag_files->tfn;
1356 if (tag_target != NULL) {
1357 argv[argc++] = mandoc_strdup("-t");
1358 argv[argc++] = tag_target;
1359 use_ofn = 0;
1360 }
1361 }
1362 }
1363 #endif
1364 if (use_ofn) {
1365 if (outst->outtype == OUTT_HTML && tag_target != NULL)
1366 mandoc_asprintf(&argv[argc], "file://%s#%s",
1367 outst->tag_files->ofn, tag_target);
1368 else
1369 argv[argc] = outst->tag_files->ofn;
1370 argc++;
1371 }
1372 argv[argc] = NULL;
1373
1374 switch (pager_pid = fork()) {
1375 case -1:
1376 mandoc_msg(MANDOCERR_FORK, 0, 0, "%s", strerror(errno));
1377 exit(mandoc_msg_getrc());
1378 case 0:
1379 break;
1380 default:
1381 (void)setpgid(pager_pid, 0);
1382 (void)tcsetpgrp(STDOUT_FILENO, pager_pid);
1383 #if HAVE_PLEDGE
1384 if (pledge("stdio rpath tmppath tty proc", NULL) == -1) {
1385 mandoc_msg(MANDOCERR_PLEDGE, 0, 0,
1386 "%s", strerror(errno));
1387 exit(mandoc_msg_getrc());
1388 }
1389 #endif
1390 outst->tag_files->pager_pid = pager_pid;
1391 return pager_pid;
1392 }
1393
1394 /*
1395 * The child process becomes the pager.
1396 * Do not start it before controlling the terminal.
1397 */
1398
1399 while (tcgetpgrp(STDOUT_FILENO) != getpid())
1400 nanosleep(&timeout, NULL);
1401
1402 execvp(argv[0], argv);
1403 mandoc_msg(MANDOCERR_EXEC, 0, 0, "%s: %s", argv[0], strerror(errno));
1404 _exit(mandoc_msg_getrc());
1405 }
1406