1 /* $Id: main.c,v 1.301 2017/07/26 10:21:55 schwarze Exp $ */
3 * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2010-2012, 2014-2017 Ingo Schwarze <schwarze@openbsd.org>
5 * Copyright (c) 2010 Joerg Sonnenberger <joerg@netbsd.org>
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.
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.
21 #include <sys/types.h>
22 #include <sys/param.h> /* MACHINE */
44 #include "mandoc_aux.h"
46 #include "mandoc_xr.h"
53 #include "mansearch.h"
64 OUTT_ASCII = 0, /* -Tascii */
65 OUTT_LOCALE, /* -Tlocale */
66 OUTT_UTF8, /* -Tutf8 */
67 OUTT_TREE, /* -Ttree */
69 OUTT_HTML, /* -Thtml */
70 OUTT_MARKDOWN, /* -Tmarkdown */
71 OUTT_LINT, /* -Tlint */
78 struct manoutput *outopts; /* output options */
79 void *outdata; /* data for output */
80 char *os_s; /* operating system for display */
81 int wstop; /* stop after a file with a warning */
82 enum mandocerr mmin; /* ignore messages below this */
83 enum mandoc_os os_e; /* check base system conventions */
84 enum outt outtype; /* which output to use */
88 int mandocdb(int, char *[]);
90 static void check_xr(const char *);
91 static int fs_lookup(const struct manpaths *,
92 size_t ipath, const char *,
93 const char *, const char *,
94 struct manpage **, size_t *);
95 static int fs_search(const struct mansearch *,
96 const struct manpaths *, int, char**,
97 struct manpage **, size_t *);
98 static int koptions(int *, char *);
99 static void moptions(int *, char *);
100 static void mmsg(enum mandocerr, enum mandoclevel,
101 const char *, int, int, const char *);
102 static void outdata_alloc(struct curparse *);
103 static void parse(struct curparse *, int, const char *);
104 static void passthrough(const char *, int, int);
105 static pid_t spawn_pager(struct tag_files *);
106 static int toptions(struct curparse *, char *);
107 static void usage(enum argmode) __attribute__((__noreturn__));
108 static int woptions(struct curparse *, char *);
110 static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
111 static char help_arg[] = "help";
112 static char *help_argv[] = {help_arg, NULL};
113 static enum mandoclevel rc;
114 static FILE *mmsg_stream;
118 main(int argc, char *argv[])
121 struct mansearch search;
122 struct curparse curp;
123 struct tag_files *tag_files;
124 struct manpage *res, *resp;
125 const char *progname, *sec, *thisarg;
126 char *conf_file, *defpaths, *auxpaths;
131 enum outmode outmode;
138 pid_t pager_pid, tc_pgid, man_pgid, pid;
141 progname = getprogname();
144 progname = mandoc_strdup("mandoc");
145 else if ((progname = strrchr(argv[0], '/')) == NULL)
149 setprogname(progname);
152 if (strncmp(progname, "mandocdb", 8) == 0 ||
153 strcmp(progname, BINM_MAKEWHATIS) == 0)
154 return mandocdb(argc, argv);
157 if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
158 err((int)MANDOCLEVEL_SYSERR, "pledge");
161 #if HAVE_SANDBOX_INIT
162 if (sandbox_init(kSBXProfileNoInternet, SANDBOX_NAMED, NULL) == -1)
163 errx((int)MANDOCLEVEL_SYSERR, "sandbox_init");
166 /* Search options. */
168 memset(&conf, 0, sizeof(conf));
169 conf_file = defpaths = NULL;
172 memset(&search, 0, sizeof(struct mansearch));
173 search.outkey = "Nd";
176 if (strcmp(progname, BINM_MAN) == 0)
177 search.argmode = ARG_NAME;
178 else if (strcmp(progname, BINM_APROPOS) == 0)
179 search.argmode = ARG_EXPR;
180 else if (strcmp(progname, BINM_WHATIS) == 0)
181 search.argmode = ARG_WORD;
182 else if (strncmp(progname, "help", 4) == 0)
183 search.argmode = ARG_NAME;
185 search.argmode = ARG_FILE;
187 /* Parser and formatter options. */
189 memset(&curp, 0, sizeof(struct curparse));
190 curp.outtype = OUTT_LOCALE;
191 curp.mmin = MANDOCERR_MAX;
192 curp.outopts = &conf.output;
193 options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
194 mmsg_stream = stderr;
199 outmode = OUTMODE_DEF;
201 while ((c = getopt(argc, argv,
202 "aC:cfhI:iK:klM:m:O:S:s:T:VW:w")) != -1) {
203 if (c == 'i' && search.argmode == ARG_EXPR) {
209 outmode = OUTMODE_ALL;
218 search.argmode = ARG_WORD;
221 conf.output.synopsisonly = 1;
223 outmode = OUTMODE_ALL;
226 if (strncmp(optarg, "os=", 3)) {
227 warnx("-I %s: Bad argument", optarg);
228 return (int)MANDOCLEVEL_BADARG;
230 if (curp.os_s != NULL) {
231 warnx("-I %s: Duplicate argument", optarg);
232 return (int)MANDOCLEVEL_BADARG;
234 curp.os_s = mandoc_strdup(optarg + 3);
237 if ( ! koptions(&options, optarg))
238 return (int)MANDOCLEVEL_BADARG;
241 search.argmode = ARG_EXPR;
244 search.argmode = ARG_FILE;
245 outmode = OUTMODE_ALL;
257 search.arch = optarg;
263 if ( ! toptions(&curp, optarg))
264 return (int)MANDOCLEVEL_BADARG;
267 if ( ! woptions(&curp, optarg))
268 return (int)MANDOCLEVEL_BADARG;
271 outmode = OUTMODE_FLN;
280 usage(search.argmode);
282 /* Postprocess options. */
284 if (outmode == OUTMODE_DEF) {
285 switch (search.argmode) {
287 outmode = OUTMODE_ALL;
291 outmode = OUTMODE_ONE;
294 outmode = OUTMODE_LST;
300 if (outmode == OUTMODE_LST)
301 search.outkey = oarg;
303 while (oarg != NULL) {
305 if (manconf_output(&conf.output,
306 strsep(&oarg, ","), 0) == 0)
308 warnx("-O %s: Bad argument", thisarg);
309 return (int)MANDOCLEVEL_BADARG;
314 if (outmode == OUTMODE_FLN ||
315 outmode == OUTMODE_LST ||
316 !isatty(STDOUT_FILENO))
321 if (pledge("stdio rpath", NULL) == -1)
322 err((int)MANDOCLEVEL_SYSERR, "pledge");
325 /* Parse arguments. */
335 * and for a man(1) section argument without -s.
338 if (search.argmode == ARG_NAME) {
339 if (*progname == 'h') {
344 } else if (argc > 1 &&
345 ((uc = (unsigned char *)argv[0]) != NULL) &&
346 ((isdigit(uc[0]) && (uc[1] == '\0' ||
347 (isalpha(uc[1]) && uc[2] == '\0'))) ||
348 (uc[0] == 'n' && uc[1] == '\0'))) {
349 search.sec = (char *)uc;
353 if (search.arch == NULL)
354 search.arch = getenv("MACHINE");
356 if (search.arch == NULL)
357 search.arch = MACHINE;
363 /* man(1), whatis(1), apropos(1) */
365 if (search.argmode != ARG_FILE) {
366 if (search.argmode == ARG_NAME &&
367 outmode == OUTMODE_ONE)
368 search.firstmatch = 1;
370 /* Access the mandoc database. */
372 manconf_parse(&conf, conf_file, defpaths, auxpaths);
373 if ( ! mansearch(&search, &conf.manpath,
374 argc, argv, &res, &sz))
375 usage(search.argmode);
378 if (search.argmode == ARG_NAME)
379 fs_search(&search, &conf.manpath,
380 argc, argv, &res, &sz);
382 warnx("nothing appropriate");
386 rc = MANDOCLEVEL_BADARG;
391 * For standard man(1) and -a output mode,
392 * prepare for copying filename pointers
393 * into the program parameter array.
396 if (outmode == OUTMODE_ONE) {
399 } else if (outmode == OUTMODE_ALL)
402 /* Iterate all matching manuals. */
405 for (i = 0; i < sz; i++) {
406 if (outmode == OUTMODE_FLN)
408 else if (outmode == OUTMODE_LST)
409 printf("%s - %s\n", res[i].names,
410 res[i].output == NULL ? "" :
412 else if (outmode == OUTMODE_ONE) {
413 /* Search for the best section. */
415 sec += strcspn(sec, "123456789");
418 prio = sec_prios[sec[0] - '1'];
421 if (prio >= best_prio)
429 * For man(1), -a and -i output mode, fall through
430 * to the main mandoc(1) code iterating files
431 * and running the parsers on each of them.
434 if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST)
442 if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
443 err((int)MANDOCLEVEL_SYSERR, "pledge");
445 if (pledge("stdio rpath", NULL) == -1)
446 err((int)MANDOCLEVEL_SYSERR, "pledge");
450 if (search.argmode == ARG_FILE)
451 moptions(&options, auxpaths);
454 curp.mp = mparse_alloc(options, curp.mmin, mmsg,
455 curp.os_e, curp.os_s);
458 * Conditionally start up the lookaside buffer before parsing.
460 if (OUTT_MAN == curp.outtype)
461 mparse_keep(curp.mp);
465 tag_files = tag_init();
466 parse(&curp, STDIN_FILENO, "<stdin>");
470 fd = mparse_open(curp.mp, resp != NULL ? resp->file : *argv);
473 tag_files = tag_init();
478 parse(&curp, fd, *argv);
479 else if (resp->form == FORM_SRC) {
480 /* For .so only; ignore failure. */
481 (void)chdir(conf.manpath.paths[resp->ipath]);
482 parse(&curp, fd, resp->file);
484 passthrough(resp->file, fd,
485 conf.output.synopsisonly);
487 if (argc > 1 && curp.outtype <= OUTT_UTF8) {
488 if (curp.outdata == NULL)
489 outdata_alloc(&curp);
490 terminal_sepline(curp.outdata);
492 } else if (rc < MANDOCLEVEL_ERROR)
493 rc = MANDOCLEVEL_ERROR;
495 if (MANDOCLEVEL_OK != rc && curp.wstop)
503 mparse_reset(curp.mp);
506 if (curp.outdata != NULL) {
507 switch (curp.outtype) {
509 html_free(curp.outdata);
514 ascii_free(curp.outdata);
518 pspdf_free(curp.outdata);
525 mparse_free(curp.mp);
529 if (search.argmode != ARG_FILE) {
531 mansearch_free(res, sz);
537 * When using a pager, finish writing both temporary files,
538 * fork it, wait for the user to close it, and clean up.
541 if (tag_files != NULL) {
544 man_pgid = getpgid(0);
545 tag_files->tcpgid = man_pgid == getpid() ?
546 getpgid(getppid()) : man_pgid;
551 /* Stop here until moved to the foreground. */
553 tc_pgid = tcgetpgrp(tag_files->ofd);
554 if (tc_pgid != man_pgid) {
555 if (tc_pgid == pager_pid) {
556 (void)tcsetpgrp(tag_files->ofd,
558 if (signum == SIGTTIN)
561 tag_files->tcpgid = tc_pgid;
566 /* Once in the foreground, activate the pager. */
569 (void)tcsetpgrp(tag_files->ofd, pager_pid);
570 kill(pager_pid, SIGCONT);
572 pager_pid = spawn_pager(tag_files);
574 /* Wait for the pager to stop or exit. */
576 while ((pid = waitpid(pager_pid, &status,
577 WUNTRACED)) == -1 && errno == EINTR)
582 rc = MANDOCLEVEL_SYSERR;
585 if (!WIFSTOPPED(status))
588 signum = WSTOPSIG(status);
597 usage(enum argmode argmode)
602 fputs("usage: mandoc [-ac] [-I os=name] "
603 "[-K encoding] [-mdoc | -man] [-O options]\n"
604 "\t [-T output] [-W level] [file ...]\n", stderr);
607 fputs("usage: man [-acfhklw] [-C file] [-M path] "
608 "[-m path] [-S subsection]\n"
609 "\t [[-s] section] name ...\n", stderr);
612 fputs("usage: whatis [-afk] [-C file] "
613 "[-M path] [-m path] [-O outkey] [-S arch]\n"
614 "\t [-s section] name ...\n", stderr);
617 fputs("usage: apropos [-afk] [-C file] "
618 "[-M path] [-m path] [-O outkey] [-S arch]\n"
619 "\t [-s section] expression ...\n", stderr);
622 exit((int)MANDOCLEVEL_BADARG);
626 fs_lookup(const struct manpaths *paths, size_t ipath,
627 const char *sec, const char *arch, const char *name,
628 struct manpage **res, size_t *ressz)
631 struct manpage *page;
637 mandoc_asprintf(&file, "%s/man%s/%s.%s",
638 paths->paths[ipath], sec, name, sec);
639 if (access(file, R_OK) != -1)
643 mandoc_asprintf(&file, "%s/cat%s/%s.0",
644 paths->paths[ipath], sec, name);
645 if (access(file, R_OK) != -1) {
652 mandoc_asprintf(&file, "%s/man%s/%s/%s.%s",
653 paths->paths[ipath], sec, arch, name, sec);
654 if (access(file, R_OK) != -1)
659 mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",
660 paths->paths[ipath], sec, name);
661 globres = glob(file, 0, NULL, &globinfo);
662 if (globres != 0 && globres != GLOB_NOMATCH)
663 warn("%s: glob", file);
666 file = mandoc_strdup(*globinfo.gl_pathv);
670 if (res != NULL || ipath + 1 != paths->sz)
673 mandoc_asprintf(&file, "%s.%s", name, sec);
674 globres = access(file, R_OK);
676 return globres != -1;
679 warnx("outdated mandoc.db lacks %s(%s) entry, run %s %s",
680 name, sec, BINM_MAKEWHATIS, paths->paths[ipath]);
685 *res = mandoc_reallocarray(*res, ++*ressz, sizeof(struct manpage));
686 page = *res + (*ressz - 1);
691 page->bits = NAME_FILE & NAME_MASK;
692 page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
698 fs_search(const struct mansearch *cfg, const struct manpaths *paths,
699 int argc, char **argv, struct manpage **res, size_t *ressz)
701 const char *const sections[] =
702 {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"};
703 const size_t nsec = sizeof(sections)/sizeof(sections[0]);
705 size_t ipath, isec, lastsz;
707 assert(cfg->argmode == ARG_NAME);
713 for (ipath = 0; ipath < paths->sz; ipath++) {
714 if (cfg->sec != NULL) {
715 if (fs_lookup(paths, ipath, cfg->sec,
716 cfg->arch, *argv, res, ressz) &&
719 } else for (isec = 0; isec < nsec; isec++)
720 if (fs_lookup(paths, ipath, sections[isec],
721 cfg->arch, *argv, res, ressz) &&
725 if (res != NULL && *ressz == lastsz)
726 warnx("No entry for %s in the manual.", *argv);
735 parse(struct curparse *curp, int fd, const char *file)
737 enum mandoclevel rctmp;
738 struct roff_man *man;
740 /* Begin by parsing the file itself. */
745 rctmp = mparse_readfd(curp->mp, fd, file);
746 if (fd != STDIN_FILENO)
752 * With -Wstop and warnings or errors of at least the requested
753 * level, do not produce output.
756 if (rctmp != MANDOCLEVEL_OK && curp->wstop)
759 if (curp->outdata == NULL)
762 mparse_result(curp->mp, &man, NULL);
764 /* Execute the out device, if it exists. */
769 if (man->macroset == MACROSET_MDOC) {
770 if (curp->outtype != OUTT_TREE || !curp->outopts->noval)
772 switch (curp->outtype) {
774 html_mdoc(curp->outdata, man);
777 tree_mdoc(curp->outdata, man);
780 man_mdoc(curp->outdata, man);
787 terminal_mdoc(curp->outdata, man);
790 markdown_mdoc(curp->outdata, man);
796 if (man->macroset == MACROSET_MAN) {
797 if (curp->outtype != OUTT_TREE || !curp->outopts->noval)
799 switch (curp->outtype) {
801 html_man(curp->outdata, man);
804 tree_man(curp->outdata, man);
807 man_man(curp->outdata, man);
814 terminal_man(curp->outdata, man);
820 if (curp->mmin < MANDOCERR_STYLE)
822 mparse_updaterc(curp->mp, &rc);
826 check_xr(const char *file)
828 static struct manpaths paths;
829 struct mansearch search;
830 struct mandoc_xr *xr;
835 manpath_base(&paths);
837 for (xr = mandoc_xr_get(); xr != NULL; xr = xr->next) {
841 search.sec = xr->sec;
842 search.outkey = NULL;
843 search.argmode = ARG_NAME;
844 search.firstmatch = 1;
845 if (mansearch(&search, &paths, 1, &xr->name, NULL, &sz))
847 if (fs_search(&search, &paths, 1, &xr->name, NULL, &sz))
850 mandoc_asprintf(&cp, "Xr %s %s", xr->name, xr->sec);
852 mandoc_asprintf(&cp, "Xr %s %s (%d times)",
853 xr->name, xr->sec, xr->count);
854 mmsg(MANDOCERR_XR_BAD, MANDOCLEVEL_STYLE,
855 file, xr->line, xr->pos + 1, cp);
861 outdata_alloc(struct curparse *curp)
863 switch (curp->outtype) {
865 curp->outdata = html_alloc(curp->outopts);
868 curp->outdata = utf8_alloc(curp->outopts);
871 curp->outdata = locale_alloc(curp->outopts);
874 curp->outdata = ascii_alloc(curp->outopts);
877 curp->outdata = pdf_alloc(curp->outopts);
880 curp->outdata = ps_alloc(curp->outopts);
888 passthrough(const char *file, int fd, int synopsis_only)
890 const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
891 const char synr[] = "SYNOPSIS";
897 ssize_t len, written;
903 if (fflush(stdout) == EOF) {
908 if ((stream = fdopen(fd, "r")) == NULL) {
915 while ((len = getline(&line, &linesz, stream)) != -1) {
919 if ( ! isspace((unsigned char)*cp))
921 while (isspace((unsigned char)*cp)) {
926 if (strcmp(cp, synb) == 0 ||
927 strcmp(cp, synr) == 0)
932 for (; len > 0; len -= written) {
933 if ((written = write(STDOUT_FILENO, cp, len)) != -1)
941 if (ferror(stream)) {
954 warn("%s: SYSERR: %s", file, syscall);
955 if (rc < MANDOCLEVEL_SYSERR)
956 rc = MANDOCLEVEL_SYSERR;
960 koptions(int *options, char *arg)
963 if ( ! strcmp(arg, "utf-8")) {
964 *options |= MPARSE_UTF8;
965 *options &= ~MPARSE_LATIN1;
966 } else if ( ! strcmp(arg, "iso-8859-1")) {
967 *options |= MPARSE_LATIN1;
968 *options &= ~MPARSE_UTF8;
969 } else if ( ! strcmp(arg, "us-ascii")) {
970 *options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
972 warnx("-K %s: Bad argument", arg);
979 moptions(int *options, char *arg)
984 if (strcmp(arg, "doc") == 0)
985 *options |= MPARSE_MDOC;
986 else if (strcmp(arg, "an") == 0)
987 *options |= MPARSE_MAN;
991 toptions(struct curparse *curp, char *arg)
994 if (0 == strcmp(arg, "ascii"))
995 curp->outtype = OUTT_ASCII;
996 else if (0 == strcmp(arg, "lint")) {
997 curp->outtype = OUTT_LINT;
998 curp->mmin = MANDOCERR_BASE;
999 mmsg_stream = stdout;
1000 } else if (0 == strcmp(arg, "tree"))
1001 curp->outtype = OUTT_TREE;
1002 else if (0 == strcmp(arg, "man"))
1003 curp->outtype = OUTT_MAN;
1004 else if (0 == strcmp(arg, "html"))
1005 curp->outtype = OUTT_HTML;
1006 else if (0 == strcmp(arg, "markdown"))
1007 curp->outtype = OUTT_MARKDOWN;
1008 else if (0 == strcmp(arg, "utf8"))
1009 curp->outtype = OUTT_UTF8;
1010 else if (0 == strcmp(arg, "locale"))
1011 curp->outtype = OUTT_LOCALE;
1012 else if (0 == strcmp(arg, "ps"))
1013 curp->outtype = OUTT_PS;
1014 else if (0 == strcmp(arg, "pdf"))
1015 curp->outtype = OUTT_PDF;
1017 warnx("-T %s: Bad argument", arg);
1025 woptions(struct curparse *curp, char *arg)
1028 const char *toks[11];
1034 toks[4] = "warning";
1038 toks[8] = "openbsd";
1044 switch (getsubopt(&arg, (char * const *)toks, &v)) {
1050 curp->mmin = MANDOCERR_BASE;
1053 curp->mmin = MANDOCERR_STYLE;
1056 curp->mmin = MANDOCERR_WARNING;
1059 curp->mmin = MANDOCERR_ERROR;
1062 curp->mmin = MANDOCERR_UNSUPP;
1065 curp->mmin = MANDOCERR_MAX;
1068 curp->mmin = MANDOCERR_BASE;
1069 curp->os_e = MANDOC_OS_OPENBSD;
1072 curp->mmin = MANDOCERR_BASE;
1073 curp->os_e = MANDOC_OS_NETBSD;
1076 warnx("-W %s: Bad argument", o);
1084 mmsg(enum mandocerr t, enum mandoclevel lvl,
1085 const char *file, int line, int col, const char *msg)
1087 const char *mparse_msg;
1089 fprintf(mmsg_stream, "%s: %s:", getprogname(),
1090 file == NULL ? "<stdin>" : file);
1093 fprintf(mmsg_stream, "%d:%d:", line, col + 1);
1095 fprintf(mmsg_stream, " %s", mparse_strlevel(lvl));
1097 if ((mparse_msg = mparse_strerror(t)) != NULL)
1098 fprintf(mmsg_stream, ": %s", mparse_msg);
1101 fprintf(mmsg_stream, ": %s", msg);
1103 fputc('\n', mmsg_stream);
1107 spawn_pager(struct tag_files *tag_files)
1109 const struct timespec timeout = { 0, 100000000 }; /* 0.1s */
1110 #define MAX_PAGER_ARGS 16
1111 char *argv[MAX_PAGER_ARGS];
1118 pager = getenv("MANPAGER");
1119 if (pager == NULL || *pager == '\0')
1120 pager = getenv("PAGER");
1121 if (pager == NULL || *pager == '\0')
1123 cp = mandoc_strdup(pager);
1126 * Parse the pager command into words.
1127 * Intentionally do not do anything fancy here.
1131 while (argc + 4 < MAX_PAGER_ARGS) {
1133 cp = strchr(cp, ' ');
1143 /* For less(1), use the tag file. */
1145 if ((cmdlen = strlen(argv[0])) >= 4) {
1146 cp = argv[0] + cmdlen - 4;
1147 if (strcmp(cp, "less") == 0) {
1148 argv[argc++] = mandoc_strdup("-T");
1149 argv[argc++] = tag_files->tfn;
1152 argv[argc++] = tag_files->ofn;
1155 switch (pager_pid = fork()) {
1157 err((int)MANDOCLEVEL_SYSERR, "fork");
1161 (void)setpgid(pager_pid, 0);
1162 (void)tcsetpgrp(tag_files->ofd, pager_pid);
1164 if (pledge("stdio rpath tmppath tty proc", NULL) == -1)
1165 err((int)MANDOCLEVEL_SYSERR, "pledge");
1167 tag_files->pager_pid = pager_pid;
1171 /* The child process becomes the pager. */
1173 if (dup2(tag_files->ofd, STDOUT_FILENO) == -1)
1174 err((int)MANDOCLEVEL_SYSERR, "pager stdout");
1175 close(tag_files->ofd);
1176 close(tag_files->tfd);
1178 /* Do not start the pager before controlling the terminal. */
1180 while (tcgetpgrp(STDOUT_FILENO) != getpid())
1181 nanosleep(&timeout, NULL);
1183 execvp(argv[0], argv);
1184 err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]);