-/* $Id: main.c,v 1.230 2015/03/27 21:33:20 schwarze Exp $ */
+/* $Id: main.c,v 1.265 2016/04/14 20:55:48 schwarze Exp $ */
/*
* Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2010-2012, 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010-2012, 2014-2016 Ingo Schwarze <schwarze@openbsd.org>
* Copyright (c) 2010 Joerg Sonnenberger <joerg@netbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
#include <assert.h>
#include <ctype.h>
+#if HAVE_ERR
+#include <err.h>
+#endif
#include <errno.h>
#include <fcntl.h>
#include <glob.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
+#include <time.h>
#include <unistd.h>
-#include "mandoc.h"
#include "mandoc_aux.h"
-#include "main.h"
+#include "mandoc.h"
+#include "roff.h"
#include "mdoc.h"
#include "man.h"
+#include "tag.h"
+#include "main.h"
#include "manconf.h"
#include "mansearch.h"
OUTMODE_ONE
};
-typedef void (*out_mdoc)(void *, const struct mdoc *);
-typedef void (*out_man)(void *, const struct man *);
-typedef void (*out_free)(void *);
-
enum outt {
OUTT_ASCII = 0, /* -Tascii */
OUTT_LOCALE, /* -Tlocale */
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 */
};
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**);
const char *, int, int, const char *);
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 *);
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;
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;
+ 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
/* Search options. */
options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
defos = NULL;
- pager_pid = 1;
+ use_pager = 1;
+ tag_files = NULL;
show_usage = 0;
outmode = OUTMODE_DEF;
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;
break;
case 'K':
if ( ! koptions(&options, optarg))
- return((int)MANDOCLEVEL_BADARG);
+ return (int)MANDOCLEVEL_BADARG;
break;
case 'k':
search.argmode = ARG_EXPR;
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;
switch (search.argmode) {
case ARG_FILE:
outmode = OUTMODE_ALL;
- pager_pid = 0;
+ use_pager = 0;
break;
case ARG_NAME:
outmode = OUTMODE_ONE;
}
}
+ 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) {
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
- if (sz == 0 && search.argmode == ARG_NAME)
- fs_search(&search, &conf.manpath,
- argc, argv, &res, &sz);
+ if (sz == 0) {
+ if (search.argmode == ARG_NAME)
+ fs_search(&search, &conf.manpath,
+ argc, argv, &res, &sz);
+ else
+ warnx("nothing appropriate");
+ }
if (sz == 0) {
rc = MANDOCLEVEL_BADARG;
if (outmode == OUTMODE_ONE) {
argc = 1;
- best_prio = 10;
+ best_prio = 20;
} else if (outmode == OUTMODE_ALL)
argc = (int)sz;
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;
/* 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;
- curp.mchars = mchars_alloc();
- curp.mp = mparse_alloc(options, curp.wlevel, mmsg,
- curp.mchars, defos);
+ mchars_alloc();
+ curp.mp = mparse_alloc(options, curp.wlevel, mmsg, defos);
/*
* Conditionally start up the lookaside buffer before parsing.
mparse_keep(curp.mp);
if (argc < 1) {
- if (pager_pid == 1 && isatty(STDOUT_FILENO))
- pager_pid = spawn_pager();
+ if (use_pager)
+ tag_files = tag_init();
parse(&curp, STDIN_FILENO, "<stdin>");
}
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 && isatty(STDOUT_FILENO))
- pager_pid = spawn_pager();
+ if (use_pager) {
+ tag_files = tag_init();
+ use_pager = 0;
+ }
if (resp == NULL)
parse(&curp, fd, *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)
ascii_sepline(curp.outdata);
- }
+ } else if (rc < MANDOCLEVEL_ERROR)
+ rc = MANDOCLEVEL_ERROR;
if (MANDOCLEVEL_OK != rc && curp.wstop)
break;
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) {
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);
- waitpid(pager_pid, NULL, 0);
+ tag_write();
+ 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(STDIN_FILENO);
+ if (tc_pgid != man_pgid) {
+ if (tc_pgid == pager_pid) {
+ (void)tcsetpgrp(STDIN_FILENO,
+ 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(STDIN_FILENO, 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
free(file);
}
- mandoc_asprintf(&file, "%s/man%s/%s.*",
+ mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",
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,\n"
- " consider running # makewhatis %s\n",
- progname, name, sec, paths->paths[ipath]);
+ warnx("outdated mandoc.db lacks %s(%s) entry, run makewhatis %s",
+ name, sec, paths->paths[ipath]);
#endif
-
*res = mandoc_reallocarray(*res, ++*ressz, sizeof(struct manpage));
page = *res + (*ressz - 1);
page->file = file;
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
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;
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--;
parse(struct curparse *curp, int fd, const char *file)
{
enum mandoclevel rctmp;
- struct mdoc *mdoc;
- struct man *man;
+ struct roff_man *man;
/* 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;
/* If unset, allocate output dev now (if applicable). */
- if ( ! (curp->outman && curp->outmdoc)) {
+ if (curp->outdata == NULL) {
switch (curp->outtype) {
case OUTT_HTML:
- curp->outdata = html_alloc(curp->mchars,
- curp->outopts);
- curp->outfree = html_free;
+ curp->outdata = html_alloc(curp->outopts);
break;
case OUTT_UTF8:
- curp->outdata = utf8_alloc(curp->mchars,
- curp->outopts);
- curp->outfree = ascii_free;
+ curp->outdata = utf8_alloc(curp->outopts);
break;
case OUTT_LOCALE:
- curp->outdata = locale_alloc(curp->mchars,
- curp->outopts);
- curp->outfree = ascii_free;
+ curp->outdata = locale_alloc(curp->outopts);
break;
case OUTT_ASCII:
- curp->outdata = ascii_alloc(curp->mchars,
- curp->outopts);
- curp->outfree = ascii_free;
+ curp->outdata = ascii_alloc(curp->outopts);
break;
case OUTT_PDF:
- curp->outdata = pdf_alloc(curp->mchars,
- curp->outopts);
- curp->outfree = pspdf_free;
+ curp->outdata = pdf_alloc(curp->outopts);
break;
case OUTT_PS:
- curp->outdata = ps_alloc(curp->mchars,
- curp->outopts);
- curp->outfree = pspdf_free;
+ curp->outdata = ps_alloc(curp->outopts);
break;
default:
break;
}
+ }
+
+ mparse_result(curp->mp, &man, NULL);
+
+ /* Execute the out device, if it exists. */
+ if (man == NULL)
+ return;
+ if (man->macroset == MACROSET_MDOC) {
+ mdoc_validate(man);
switch (curp->outtype) {
case OUTT_HTML:
- curp->outman = html_man;
- curp->outmdoc = html_mdoc;
+ html_mdoc(curp->outdata, man);
break;
case OUTT_TREE:
- curp->outman = tree_man;
- curp->outmdoc = tree_mdoc;
+ tree_mdoc(curp->outdata, man);
break;
case OUTT_MAN:
- curp->outmdoc = man_mdoc;
- curp->outman = man_man;
+ man_mdoc(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_mdoc(curp->outdata, man);
+ break;
+ default:
+ break;
+ }
+ }
+ if (man->macroset == MACROSET_MAN) {
+ man_validate(man);
+ switch (curp->outtype) {
+ case OUTT_HTML:
+ html_man(curp->outdata, man);
+ break;
+ case OUTT_TREE:
+ tree_man(curp->outdata, man);
+ break;
+ case OUTT_MAN:
+ man_man(curp->outdata, man);
+ break;
+ case OUTT_PDF:
+ case OUTT_ASCII:
+ case OUTT_UTF8:
+ case OUTT_LOCALE:
+ case OUTT_PS:
+ terminal_man(curp->outdata, man);
break;
default:
break;
}
}
-
- mparse_result(curp->mp, &mdoc, &man, NULL);
-
- /* Execute the out device, if it exists. */
-
- if (man && curp->outman)
- (*curp->outman)(curp->outdata, man);
- if (mdoc && curp->outmdoc)
- (*curp->outmdoc)(curp->outdata, mdoc);
}
static void
FILE *stream;
const char *syscall;
- char *line;
- size_t len, off;
- ssize_t nw;
+ char *line, *cp;
+ size_t linesz;
int print;
- fflush(stdout);
+ line = NULL;
+ linesz = 0;
if ((stream = fdopen(fd, "r")) == NULL) {
close(fd);
}
print = 0;
- while ((line = fgetln(stream, &len)) != NULL) {
+ while (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++;
- len--;
- }
+ while (isspace((unsigned char)*cp))
+ cp++;
} 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;
- }
+ if (fputs(cp, stdout)) {
+ fclose(stream);
+ syscall = "fputs";
+ 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;
}
} 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
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
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
curp->wstop = 1;
break;
case 1:
- /* FALLTHROUGH */
case 2:
curp->wlevel = MANDOCLEVEL_WARNING;
break;
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
{
const char *mparse_msg;
- fprintf(stderr, "%s: %s:", progname, file);
+ fprintf(stderr, "%s: %s:", getprogname(), file);
if (line)
fprintf(stderr, "%d:%d:", line, col + 1);
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;
- int fildes[2];
+ size_t cmdlen;
int argc;
pid_t pager_pid;
- 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);
- 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);
- }
-
- /* 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]);
-
pager = getenv("MANPAGER");
if (pager == NULL || *pager == '\0')
pager = getenv("PAGER");
if (pager == NULL || *pager == '\0')
- pager = "/usr/bin/more -s";
+ pager = "more -s";
cp = mandoc_strdup(pager);
/*
*/
argc = 0;
- while (argc + 1 < MAX_PAGER_ARGS) {
+ while (argc + 4 < MAX_PAGER_ARGS) {
argv[argc++] = cp;
cp = strchr(cp, ' ');
if (cp == NULL)
if (*cp == '\0')
break;
}
+
+ /* For more(1) and 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) {
+ argv[argc++] = mandoc_strdup("-T");
+ argv[argc++] = tag_files->tfn;
+ }
+ }
+ argv[argc++] = tag_files->ofn;
argv[argc] = NULL;
- /* Hand over to the pager. */
+ switch (pager_pid = fork()) {
+ case -1:
+ err((int)MANDOCLEVEL_SYSERR, "fork");
+ case 0:
+ break;
+ default:
+ (void)setpgid(pager_pid, 0);
+ (void)tcsetpgrp(STDIN_FILENO, 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. */
+
+ if (dup2(tag_files->ofd, STDOUT_FILENO) == -1)
+ err((int)MANDOCLEVEL_SYSERR, "pager stdout");
+ close(tag_files->ofd);
+ close(tag_files->tfd);
+
+ /* Do not start the pager before controlling the terminal. */
+
+ while (tcgetpgrp(STDIN_FILENO) != getpid())
+ nanosleep(&timeout, NULL);
execvp(argv[0], argv);
- fprintf(stderr, "%s: exec: %s\n",
- progname, strerror(errno));
- exit((int)MANDOCLEVEL_SYSERR);
+ err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]);
}
git.ckatri.com / mandoc.git / blobdiff