=================================================================== RCS file: /cvs/mandoc/main.c,v retrieving revision 1.241 retrieving revision 1.273.2.6 diff -u -p -r1.241 -r1.273.2.6 --- mandoc/main.c 2015/07/19 00:07:42 1.241 +++ mandoc/main.c 2017/02/10 15:57:47 1.273.2.6 @@ -1,7 +1,7 @@ -/* $Id: main.c,v 1.241 2015/07/19 00:07:42 schwarze Exp $ */ +/* $Id: main.c,v 1.273.2.6 2017/02/10 15:57:47 schwarze Exp $ */ /* * Copyright (c) 2008-2012 Kristaps Dzonsons - * Copyright (c) 2010-2012, 2014, 2015 Ingo Schwarze + * Copyright (c) 2010-2012, 2014-2017 Ingo Schwarze * Copyright (c) 2010 Joerg Sonnenberger * * Permission to use, copy, modify, and distribute this software for any @@ -24,14 +24,21 @@ #include #include +#if HAVE_ERR +#include +#endif #include #include #include +#if HAVE_SANDBOX_INIT +#include +#endif #include #include #include #include #include +#include #include #include "mandoc_aux.h" @@ -44,12 +51,6 @@ #include "manconf.h" #include "mansearch.h" -#if !defined(__GNUC__) || (__GNUC__ < 2) -# if !defined(lint) -# define __attribute__(x) -# endif -#endif /* !defined(__GNUC__) || (__GNUC__ < 2) */ - enum outmode { OUTMODE_DEF = 0, OUTMODE_FLN, @@ -59,10 +60,6 @@ enum outmode { OUTMODE_ONE }; -typedef void (*out_mdoc)(void *, const struct roff_man *); -typedef void (*out_man)(void *, const struct roff_man *); -typedef void (*out_free)(void *); - enum outt { OUTT_ASCII = 0, /* -Tascii */ OUTT_LOCALE, /* -Tlocale */ @@ -77,17 +74,18 @@ enum outt { struct curparse { struct mparse *mp; - struct mchars *mchars; /* character table */ enum mandoclevel wlevel; /* ignore messages below this */ int wstop; /* stop after a file with a warning */ enum outt outtype; /* which output to use */ - out_mdoc outmdoc; /* mdoc output ptr */ - out_man outman; /* man output ptr */ - out_free outfree; /* free output ptr */ void *outdata; /* data for output */ struct manoutput *outopts; /* output options */ }; + +#if HAVE_SQLITE3 +int mandocdb(int, char *[]); +#endif + static int fs_lookup(const struct manpaths *, size_t ipath, const char *, const char *, const char *, @@ -95,17 +93,14 @@ static int fs_lookup(const struct manpaths *, static void fs_search(const struct mansearch *, const struct manpaths *, int, char**, struct manpage **, size_t *); -static void handle_sigpipe(int); static int koptions(int *, char *); -#if HAVE_SQLITE3 -int mandocdb(int, char**); -#endif static int moptions(int *, char *); static void mmsg(enum mandocerr, enum mandoclevel, const char *, int, int, const char *); +static void outdata_alloc(struct curparse *); static void parse(struct curparse *, int, const char *); static void passthrough(const char *, int, int); -static pid_t spawn_pager(void); +static pid_t spawn_pager(struct tag_files *); static int toptions(struct curparse *, char *); static void usage(enum argmode) __attribute__((noreturn)); static int woptions(struct curparse *, char *); @@ -113,7 +108,6 @@ static int woptions(struct curparse *, char *); static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9}; static char help_arg[] = "help"; static char *help_argv[] = {help_arg, NULL}; -static const char *progname; static enum mandoclevel rc; @@ -123,34 +117,54 @@ main(int argc, char *argv[]) struct manconf conf; struct curparse curp; struct mansearch search; + struct tag_files *tag_files; + const char *progname; char *auxpaths; char *defos; unsigned char *uc; struct manpage *res, *resp; char *conf_file, *defpaths; - size_t isec, i, sz; + const char *sec; + const char *thisarg; + size_t i, sz; int prio, best_prio; - char sec; - enum mandoclevel rctmp; enum outmode outmode; int fd; int show_usage; int options; + int use_pager; + int status, signum; int c; - pid_t pager_pid; /* 0: don't use; 1: not yet spawned. */ + pid_t pager_pid, tc_pgid, man_pgid, pid; +#if HAVE_PROGNAME + progname = getprogname(); +#else if (argc < 1) - progname = "mandoc"; + progname = mandoc_strdup("mandoc"); else if ((progname = strrchr(argv[0], '/')) == NULL) progname = argv[0]; else ++progname; + setprogname(progname); +#endif #if HAVE_SQLITE3 - if (strcmp(progname, BINM_MAKEWHATIS) == 0) - return(mandocdb(argc, argv)); + if (strncmp(progname, "mandocdb", 8) == 0 || + strcmp(progname, BINM_MAKEWHATIS) == 0) + return mandocdb(argc, argv); #endif +#if HAVE_PLEDGE + if (pledge("stdio rpath tmppath tty proc exec flock", NULL) == -1) + err((int)MANDOCLEVEL_SYSERR, "pledge"); +#endif + +#if HAVE_SANDBOX_INIT + if (sandbox_init(kSBXProfileNoInternet, SANDBOX_NAMED, NULL) == -1) + errx((int)MANDOCLEVEL_SYSERR, "sandbox_init"); +#endif + /* Search options. */ memset(&conf, 0, sizeof(conf)); @@ -180,7 +194,8 @@ main(int argc, char *argv[]) options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1; defos = NULL; - pager_pid = 1; + use_pager = 1; + tag_files = NULL; show_usage = 0; outmode = OUTMODE_DEF; @@ -194,28 +209,24 @@ main(int argc, char *argv[]) conf_file = optarg; break; case 'c': - pager_pid = 0; + use_pager = 0; break; case 'f': search.argmode = ARG_WORD; break; case 'h': conf.output.synopsisonly = 1; - pager_pid = 0; + use_pager = 0; outmode = OUTMODE_ALL; break; case 'I': if (strncmp(optarg, "os=", 3)) { - fprintf(stderr, - "%s: -I %s: Bad argument\n", - progname, optarg); - return((int)MANDOCLEVEL_BADARG); + warnx("-I %s: Bad argument", optarg); + return (int)MANDOCLEVEL_BADARG; } if (defos) { - fprintf(stderr, - "%s: -I %s: Duplicate argument\n", - progname, optarg); - return((int)MANDOCLEVEL_BADARG); + warnx("-I %s: Duplicate argument", optarg); + return (int)MANDOCLEVEL_BADARG; } defos = mandoc_strdup(optarg + 3); break; @@ -224,7 +235,7 @@ main(int argc, char *argv[]) break; case 'K': if ( ! koptions(&options, optarg)) - return((int)MANDOCLEVEL_BADARG); + return (int)MANDOCLEVEL_BADARG; break; case 'k': search.argmode = ARG_EXPR; @@ -241,9 +252,14 @@ main(int argc, char *argv[]) break; case 'O': search.outkey = optarg; - while (optarg != NULL) - manconf_output(&conf.output, - strsep(&optarg, ",")); + while (optarg != NULL) { + thisarg = optarg; + if (manconf_output(&conf.output, + strsep(&optarg, ","), 0) == 0) + continue; + warnx("-O %s: Bad argument", thisarg); + return (int)MANDOCLEVEL_BADARG; + } break; case 'S': search.arch = optarg; @@ -253,11 +269,11 @@ main(int argc, char *argv[]) break; case 'T': if ( ! toptions(&curp, optarg)) - return((int)MANDOCLEVEL_BADARG); + return (int)MANDOCLEVEL_BADARG; break; case 'W': if ( ! woptions(&curp, optarg)) - return((int)MANDOCLEVEL_BADARG); + return (int)MANDOCLEVEL_BADARG; break; case 'w': outmode = OUTMODE_FLN; @@ -277,7 +293,7 @@ main(int argc, char *argv[]) switch (search.argmode) { case ARG_FILE: outmode = OUTMODE_ALL; - pager_pid = 0; + use_pager = 0; break; case ARG_NAME: outmode = OUTMODE_ONE; @@ -288,6 +304,17 @@ main(int argc, char *argv[]) } } + if (outmode == OUTMODE_FLN || + outmode == OUTMODE_LST || + !isatty(STDOUT_FILENO)) + use_pager = 0; + +#if HAVE_PLEDGE + if (!use_pager) + if (pledge("stdio rpath flock", NULL) == -1) + err((int)MANDOCLEVEL_SYSERR, "pledge"); +#endif + /* Parse arguments. */ if (argc > 0) { @@ -348,7 +375,7 @@ main(int argc, char *argv[]) if (search.argmode != ARG_NAME) { fputs("mandoc: database support not compiled in\n", stderr); - return((int)MANDOCLEVEL_BADARG); + return (int)MANDOCLEVEL_BADARG; } sz = 0; #endif @@ -358,9 +385,7 @@ main(int argc, char *argv[]) fs_search(&search, &conf.manpath, argc, argv, &res, &sz); else - fprintf(stderr, - "%s: nothing appropriate\n", - progname); + warnx("nothing appropriate"); } if (sz == 0) { @@ -376,7 +401,7 @@ main(int argc, char *argv[]) if (outmode == OUTMODE_ONE) { argc = 1; - best_prio = 10; + best_prio = 20; } else if (outmode == OUTMODE_ALL) argc = (int)sz; @@ -392,11 +417,13 @@ main(int argc, char *argv[]) res[i].output); else if (outmode == OUTMODE_ONE) { /* Search for the best section. */ - isec = strcspn(res[i].file, "123456789"); - sec = res[i].file[isec]; - if ('\0' == sec) + sec = res[i].file; + sec += strcspn(sec, "123456789"); + if (sec[0] == '\0') continue; - prio = sec_prios[sec - '1']; + prio = sec_prios[sec[0] - '1']; + if (sec[1] != '/') + prio += 10; if (prio >= best_prio) continue; best_prio = prio; @@ -416,16 +443,22 @@ main(int argc, char *argv[]) /* mandoc(1) */ +#if HAVE_PLEDGE + if (use_pager) { + if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1) + err((int)MANDOCLEVEL_SYSERR, "pledge"); + } else { + if (pledge("stdio rpath", NULL) == -1) + err((int)MANDOCLEVEL_SYSERR, "pledge"); + } +#endif + if (search.argmode == ARG_FILE && ! moptions(&options, auxpaths)) - return((int)MANDOCLEVEL_BADARG); + return (int)MANDOCLEVEL_BADARG; - if (pager_pid == 1 && isatty(STDOUT_FILENO) == 0) - pager_pid = 0; + mchars_alloc(); + curp.mp = mparse_alloc(options, curp.wlevel, mmsg, defos); - curp.mchars = mchars_alloc(); - curp.mp = mparse_alloc(options, curp.wlevel, mmsg, - curp.mchars, defos); - /* * Conditionally start up the lookaside buffer before parsing. */ @@ -433,20 +466,18 @@ main(int argc, char *argv[]) mparse_keep(curp.mp); if (argc < 1) { - if (pager_pid == 1) - pager_pid = spawn_pager(); + if (use_pager) + tag_files = tag_init(); parse(&curp, STDIN_FILENO, ""); } while (argc > 0) { - rctmp = mparse_open(curp.mp, &fd, - resp != NULL ? resp->file : *argv); - if (rc < rctmp) - rc = rctmp; - + fd = mparse_open(curp.mp, resp != NULL ? resp->file : *argv); if (fd != -1) { - if (pager_pid == 1) - pager_pid = spawn_pager(); + if (use_pager) { + tag_files = tag_init(); + use_pager = 0; + } if (resp == NULL) parse(&curp, fd, *argv); @@ -458,14 +489,14 @@ main(int argc, char *argv[]) passthrough(resp->file, fd, conf.output.synopsisonly); - rctmp = mparse_wait(curp.mp); - if (rc < rctmp) - rc = rctmp; + if (argc > 1 && curp.outtype <= OUTT_UTF8) { + if (curp.outdata == NULL) + outdata_alloc(&curp); + terminal_sepline(curp.outdata); + } + } else if (rc < MANDOCLEVEL_ERROR) + rc = MANDOCLEVEL_ERROR; - if (argc > 1 && curp.outtype <= OUTT_UTF8) - ascii_sepline(curp.outdata); - } - if (MANDOCLEVEL_OK != rc && curp.wstop) break; @@ -477,10 +508,26 @@ main(int argc, char *argv[]) mparse_reset(curp.mp); } - if (curp.outfree) - (*curp.outfree)(curp.outdata); + if (curp.outdata != NULL) { + switch (curp.outtype) { + case OUTT_HTML: + html_free(curp.outdata); + break; + case OUTT_UTF8: + case OUTT_LOCALE: + case OUTT_ASCII: + ascii_free(curp.outdata); + break; + case OUTT_PDF: + case OUTT_PS: + pspdf_free(curp.outdata); + break; + default: + break; + } + } mparse_free(curp.mp); - mchars_free(curp.mchars); + mchars_free(); out: if (search.argmode != ARG_FILE) { @@ -494,19 +541,63 @@ out: free(defos); /* - * If a pager is attached, flush the pipe leading to it - * and signal end of file such that the user can browse - * to the end. Then wait for the user to close the pager. + * When using a pager, finish writing both temporary files, + * fork it, wait for the user to close it, and clean up. */ - if (pager_pid != 0 && pager_pid != 1) { + if (tag_files != NULL) { fclose(stdout); tag_write(); - waitpid(pager_pid, NULL, 0); + man_pgid = getpgid(0); + tag_files->tcpgid = man_pgid == getpid() ? + getpgid(getppid()) : man_pgid; + pager_pid = 0; + signum = SIGSTOP; + for (;;) { + + /* Stop here until moved to the foreground. */ + + tc_pgid = tcgetpgrp(tag_files->ofd); + if (tc_pgid != man_pgid) { + if (tc_pgid == pager_pid) { + (void)tcsetpgrp(tag_files->ofd, + man_pgid); + if (signum == SIGTTIN) + continue; + } else + tag_files->tcpgid = tc_pgid; + kill(0, signum); + continue; + } + + /* Once in the foreground, activate the pager. */ + + if (pager_pid) { + (void)tcsetpgrp(tag_files->ofd, pager_pid); + kill(pager_pid, SIGCONT); + } else + pager_pid = spawn_pager(tag_files); + + /* Wait for the pager to stop or exit. */ + + while ((pid = waitpid(pager_pid, &status, + WUNTRACED)) == -1 && errno == EINTR) + continue; + + if (pid == -1) { + warn("wait"); + rc = MANDOCLEVEL_SYSERR; + break; + } + if (!WIFSTOPPED(status)) + break; + + signum = WSTOPSIG(status); + } tag_unlink(); } - return((int)rc); + return (int)rc; } static void @@ -577,19 +668,18 @@ fs_lookup(const struct manpaths *paths, size_t ipath, paths->paths[ipath], sec, name); globres = glob(file, 0, NULL, &globinfo); if (globres != 0 && globres != GLOB_NOMATCH) - fprintf(stderr, "%s: %s: glob: %s\n", - progname, file, strerror(errno)); + warn("%s: glob", file); free(file); if (globres == 0) file = mandoc_strdup(*globinfo.gl_pathv); globfree(&globinfo); if (globres != 0) - return(0); + return 0; found: #if HAVE_SQLITE3 - fprintf(stderr, "%s: outdated mandoc.db lacks %s(%s) entry, run " - "makewhatis %s\n", progname, name, sec, paths->paths[ipath]); + warnx("outdated mandoc.db lacks %s(%s) entry, run %s %s", + name, sec, BINM_MAKEWHATIS, paths->paths[ipath]); #endif *res = mandoc_reallocarray(*res, ++*ressz, sizeof(struct manpage)); page = *res + (*ressz - 1); @@ -600,7 +690,7 @@ found: page->bits = NAME_FILE & NAME_MASK; page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10; page->form = form; - return(1); + return 1; } static void @@ -608,7 +698,7 @@ fs_search(const struct mansearch *cfg, const struct ma int argc, char **argv, struct manpage **res, size_t *ressz) { const char *const sections[] = - {"1", "8", "6", "2", "3", "3p", "5", "7", "4", "9"}; + {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"}; const size_t nsec = sizeof(sections)/sizeof(sections[0]); size_t ipath, isec, lastsz; @@ -631,9 +721,7 @@ fs_search(const struct mansearch *cfg, const struct ma return; } if (*ressz == lastsz) - fprintf(stderr, - "%s: No entry for %s in the manual.\n", - progname, *argv); + warnx("No entry for %s in the manual.", *argv); lastsz = *ressz; argv++; argc--; @@ -649,9 +737,11 @@ parse(struct curparse *curp, int fd, const char *file) /* Begin by parsing the file itself. */ assert(file); - assert(fd >= -1); + assert(fd >= 0); rctmp = mparse_readfd(curp->mp, fd, file); + if (fd != STDIN_FILENO) + close(fd); if (rc < rctmp) rc = rctmp; @@ -663,84 +753,91 @@ parse(struct curparse *curp, int fd, const char *file) if (rctmp != MANDOCLEVEL_OK && curp->wstop) return; - /* If unset, allocate output dev now (if applicable). */ + if (curp->outdata == NULL) + outdata_alloc(curp); - if ( ! (curp->outman && curp->outmdoc)) { + mparse_result(curp->mp, &man, NULL); + + /* Execute the out device, if it exists. */ + + if (man == NULL) + return; + if (man->macroset == MACROSET_MDOC) { + if (curp->outtype != OUTT_TREE || !curp->outopts->noval) + mdoc_validate(man); switch (curp->outtype) { case OUTT_HTML: - curp->outdata = html_alloc(curp->mchars, - curp->outopts); - curp->outfree = html_free; + html_mdoc(curp->outdata, man); break; - case OUTT_UTF8: - curp->outdata = utf8_alloc(curp->mchars, - curp->outopts); - curp->outfree = ascii_free; + case OUTT_TREE: + tree_mdoc(curp->outdata, man); break; - case OUTT_LOCALE: - curp->outdata = locale_alloc(curp->mchars, - curp->outopts); - curp->outfree = ascii_free; + case OUTT_MAN: + man_mdoc(curp->outdata, man); break; - case OUTT_ASCII: - curp->outdata = ascii_alloc(curp->mchars, - curp->outopts); - curp->outfree = ascii_free; - break; case OUTT_PDF: - curp->outdata = pdf_alloc(curp->mchars, - curp->outopts); - curp->outfree = pspdf_free; - break; + case OUTT_ASCII: + case OUTT_UTF8: + case OUTT_LOCALE: case OUTT_PS: - curp->outdata = ps_alloc(curp->mchars, - curp->outopts); - curp->outfree = pspdf_free; + terminal_mdoc(curp->outdata, man); break; default: break; } - + } + if (man->macroset == MACROSET_MAN) { + if (curp->outtype != OUTT_TREE || !curp->outopts->noval) + man_validate(man); switch (curp->outtype) { case OUTT_HTML: - curp->outman = html_man; - curp->outmdoc = html_mdoc; + html_man(curp->outdata, man); break; case OUTT_TREE: - curp->outman = tree_man; - curp->outmdoc = tree_mdoc; + tree_man(curp->outdata, man); break; case OUTT_MAN: - curp->outmdoc = man_mdoc; - curp->outman = man_man; + man_man(curp->outdata, man); break; case OUTT_PDF: - /* FALLTHROUGH */ case OUTT_ASCII: - /* FALLTHROUGH */ case OUTT_UTF8: - /* FALLTHROUGH */ case OUTT_LOCALE: - /* FALLTHROUGH */ case OUTT_PS: - curp->outman = terminal_man; - curp->outmdoc = terminal_mdoc; + terminal_man(curp->outdata, man); break; default: break; } } + mparse_updaterc(curp->mp, &rc); +} - mparse_result(curp->mp, &man, NULL); - - /* Execute the out device, if it exists. */ - - if (man == NULL) - return; - if (curp->outmdoc != NULL && man->macroset == MACROSET_MDOC) - (*curp->outmdoc)(curp->outdata, man); - if (curp->outman != NULL && man->macroset == MACROSET_MAN) - (*curp->outman)(curp->outdata, man); +static void +outdata_alloc(struct curparse *curp) +{ + switch (curp->outtype) { + case OUTT_HTML: + curp->outdata = html_alloc(curp->outopts); + break; + case OUTT_UTF8: + curp->outdata = utf8_alloc(curp->outopts); + break; + case OUTT_LOCALE: + curp->outdata = locale_alloc(curp->outopts); + break; + case OUTT_ASCII: + curp->outdata = ascii_alloc(curp->outopts); + break; + case OUTT_PDF: + curp->outdata = pdf_alloc(curp->outopts); + break; + case OUTT_PS: + curp->outdata = ps_alloc(curp->outopts); + break; + default: + break; + } } static void @@ -751,13 +848,19 @@ passthrough(const char *file, int fd, int synopsis_onl FILE *stream; const char *syscall; - char *line; - size_t len, off; - ssize_t nw; + char *line, *cp; + size_t linesz; + ssize_t len, written; int print; - fflush(stdout); + line = NULL; + linesz = 0; + if (fflush(stdout) == EOF) { + syscall = "fflush"; + goto fail; + } + if ((stream = fdopen(fd, "r")) == NULL) { close(fd); syscall = "fdopen"; @@ -765,47 +868,46 @@ passthrough(const char *file, int fd, int synopsis_onl } print = 0; - while ((line = fgetln(stream, &len)) != NULL) { + while ((len = getline(&line, &linesz, stream)) != -1) { + cp = line; if (synopsis_only) { if (print) { - if ( ! isspace((unsigned char)*line)) + if ( ! isspace((unsigned char)*cp)) goto done; - while (len && - isspace((unsigned char)*line)) { - line++; + while (isspace((unsigned char)*cp)) { + cp++; len--; } } else { - if ((len == sizeof(synb) && - ! strncmp(line, synb, len - 1)) || - (len == sizeof(synr) && - ! strncmp(line, synr, len - 1))) + if (strcmp(cp, synb) == 0 || + strcmp(cp, synr) == 0) print = 1; continue; } } - for (off = 0; off < len; off += nw) - if ((nw = write(STDOUT_FILENO, line + off, - len - off)) == -1 || nw == 0) { - fclose(stream); - syscall = "write"; - goto fail; - } + for (; len > 0; len -= written) { + if ((written = write(STDOUT_FILENO, cp, len)) != -1) + continue; + fclose(stream); + syscall = "write"; + goto fail; + } } if (ferror(stream)) { fclose(stream); - syscall = "fgetln"; + syscall = "getline"; goto fail; } done: + free(line); fclose(stream); return; fail: - fprintf(stderr, "%s: %s: SYSERR: %s: %s", - progname, file, syscall, strerror(errno)); + free(line); + warn("%s: SYSERR: %s", file, syscall); if (rc < MANDOCLEVEL_SYSERR) rc = MANDOCLEVEL_SYSERR; } @@ -823,11 +925,10 @@ koptions(int *options, char *arg) } else if ( ! strcmp(arg, "us-ascii")) { *options &= ~(MPARSE_UTF8 | MPARSE_LATIN1); } else { - fprintf(stderr, "%s: -K %s: Bad argument\n", - progname, arg); - return(0); + warnx("-K %s: Bad argument", arg); + return 0; } - return(1); + return 1; } static int @@ -843,12 +944,11 @@ moptions(int *options, char *arg) else if (0 == strcmp(arg, "an")) *options |= MPARSE_MAN; else { - fprintf(stderr, "%s: -m %s: Bad argument\n", - progname, arg); - return(0); + warnx("-m %s: Bad argument", arg); + return 0; } - return(1); + return 1; } static int @@ -877,12 +977,11 @@ toptions(struct curparse *curp, char *arg) else if (0 == strcmp(arg, "pdf")) curp->outtype = OUTT_PDF; else { - fprintf(stderr, "%s: -T %s: Bad argument\n", - progname, arg); - return(0); + warnx("-T %s: Bad argument", arg); + return 0; } - return(1); + return 1; } static int @@ -901,12 +1000,11 @@ woptions(struct curparse *curp, char *arg) while (*arg) { o = arg; - switch (getsubopt(&arg, UNCONST(toks), &v)) { + switch (getsubopt(&arg, (char * const *)toks, &v)) { case 0: curp->wstop = 1; break; case 1: - /* FALLTHROUGH */ case 2: curp->wlevel = MANDOCLEVEL_WARNING; break; @@ -920,13 +1018,12 @@ woptions(struct curparse *curp, char *arg) curp->wlevel = MANDOCLEVEL_BADARG; break; default: - fprintf(stderr, "%s: -W %s: Bad argument\n", - progname, o); - return(0); + warnx("-W %s: Bad argument", o); + return 0; } } - return(1); + return 1; } static void @@ -935,7 +1032,8 @@ mmsg(enum mandocerr t, enum mandoclevel lvl, { const char *mparse_msg; - fprintf(stderr, "%s: %s:", progname, file); + fprintf(stderr, "%s: %s:", getprogname(), + file == NULL ? "" : file); if (line) fprintf(stderr, "%d:%d:", line, col + 1); @@ -951,22 +1049,15 @@ mmsg(enum mandocerr t, enum mandoclevel lvl, fputc('\n', stderr); } -static void -handle_sigpipe(int signum) -{ - - exit((int)rc); -} - static pid_t -spawn_pager(void) +spawn_pager(struct tag_files *tag_files) { + const struct timespec timeout = { 0, 100000000 }; /* 0.1s */ #define MAX_PAGER_ARGS 16 char *argv[MAX_PAGER_ARGS]; const char *pager; char *cp; size_t cmdlen; - int fildes[2]; int argc; pid_t pager_pid; @@ -995,59 +1086,46 @@ spawn_pager(void) break; } - /* Read all text right away and use the tag file. */ + /* For less(1), use the tag file. */ if ((cmdlen = strlen(argv[0])) >= 4) { cp = argv[0] + cmdlen - 4; - if (strcmp(cp, "less") == 0 || - strcmp(cp, "more") == 0) { - tag_init(); - argv[argc++] = mandoc_strdup("+G1G"); + if (strcmp(cp, "less") == 0) { argv[argc++] = mandoc_strdup("-T"); - argv[argc++] = tag_filename(); + argv[argc++] = tag_files->tfn; } } + argv[argc++] = tag_files->ofn; argv[argc] = NULL; - if (pipe(fildes) == -1) { - fprintf(stderr, "%s: pipe: %s\n", - progname, strerror(errno)); - return(0); - } - switch (pager_pid = fork()) { case -1: - fprintf(stderr, "%s: fork: %s\n", - progname, strerror(errno)); - exit((int)MANDOCLEVEL_SYSERR); + err((int)MANDOCLEVEL_SYSERR, "fork"); case 0: break; default: - close(fildes[0]); - if (dup2(fildes[1], STDOUT_FILENO) == -1) { - fprintf(stderr, "%s: dup output: %s\n", - progname, strerror(errno)); - exit((int)MANDOCLEVEL_SYSERR); - } - close(fildes[1]); - signal(SIGPIPE, handle_sigpipe); - return(pager_pid); + (void)setpgid(pager_pid, 0); + (void)tcsetpgrp(tag_files->ofd, pager_pid); +#if HAVE_PLEDGE + if (pledge("stdio rpath tmppath tty proc", NULL) == -1) + err((int)MANDOCLEVEL_SYSERR, "pledge"); +#endif + tag_files->pager_pid = pager_pid; + return pager_pid; } /* The child process becomes the pager. */ - close(fildes[1]); - if (dup2(fildes[0], STDIN_FILENO) == -1) { - fprintf(stderr, "%s: dup input: %s\n", - progname, strerror(errno)); - exit((int)MANDOCLEVEL_SYSERR); - } - close(fildes[0]); + if (dup2(tag_files->ofd, STDOUT_FILENO) == -1) + err((int)MANDOCLEVEL_SYSERR, "pager stdout"); + close(tag_files->ofd); + close(tag_files->tfd); - /* Hand over to the pager. */ + /* Do not start the pager before controlling the terminal. */ + while (tcgetpgrp(STDOUT_FILENO) != getpid()) + nanosleep(&timeout, NULL); + execvp(argv[0], argv); - fprintf(stderr, "%s: exec %s: %s\n", - progname, argv[0], strerror(errno)); - exit((int)MANDOCLEVEL_SYSERR); + err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]); }