/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1995 Peter Wemm
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
#if 0
static char sccsid[] = "@(#)mkheaders.c 8.1 (Berkeley) 6/6/93";
#endif
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
/*
* Make all the .h files for the optional entries
*/
#include <ctype.h>
#include <err.h>
#include <stdio.h>
#include <string.h>
#include <sys/param.h>
#include "config.h"
#include "y.tab.h"
static struct users {
int u_default;
int u_min;
int u_max;
} users = { 8, 2, 512 };
static char *lower(char *);
static void read_options(void);
static void do_option(char *);
static char *tooption(char *);
void
options(void)
{
char buf[40];
struct cputype *cp;
struct opt_list *ol;
struct opt *op;
/* Fake the cpu types as options. */
SLIST_FOREACH(cp, &cputype, cpu_next) {
op = (struct opt *)calloc(1, sizeof(*op));
if (op == NULL)
err(EXIT_FAILURE, "calloc");
op->op_name = ns(cp->cpu_name);
SLIST_INSERT_HEAD(&opt, op, op_next);
}
if (maxusers == 0) {
/* fprintf(stderr, "maxusers not specified; will auto-size\n"); */
} else if (maxusers < users.u_min) {
fprintf(stderr, "minimum of %d maxusers assumed\n",
users.u_min);
maxusers = users.u_min;
} else if (maxusers > users.u_max)
fprintf(stderr, "warning: maxusers > %d (%d)\n",
users.u_max, maxusers);
/* Fake MAXUSERS as an option. */
op = (struct opt *)calloc(1, sizeof(*op));
if (op == NULL)
err(EXIT_FAILURE, "calloc");
op->op_name = ns("MAXUSERS");
snprintf(buf, sizeof(buf), "%d", maxusers);
op->op_value = ns(buf);
SLIST_INSERT_HEAD(&opt, op, op_next);
read_options();
/* Fake the value of MACHINE_ARCH as an option if necessary */
SLIST_FOREACH(ol, &otab, o_next) {
if (strcasecmp(ol->o_name, machinearch) != 0)
continue;
op = (struct opt *)calloc(1, sizeof(*op));
if (op == NULL)
err(EXIT_FAILURE, "calloc");
op->op_name = ns(ol->o_name);
SLIST_INSERT_HEAD(&opt, op, op_next);
break;
}
SLIST_FOREACH(op, &opt, op_next) {
SLIST_FOREACH(ol, &otab, o_next) {
if (eq(op->op_name, ol->o_name) &&
(ol->o_flags & OL_ALIAS)) {
fprintf(stderr, "Mapping option %s to %s.\n",
op->op_name, ol->o_file);
op->op_name = ol->o_file;
break;
}
}
}
SLIST_FOREACH(ol, &otab, o_next)
do_option(ol->o_name);
SLIST_FOREACH(op, &opt, op_next) {
if (!op->op_ownfile && strncmp(op->op_name, "DEV_", 4)) {
fprintf(stderr, "%s: unknown option \"%s\"\n",
PREFIX, op->op_name);
exit(1);
}
}
}
/*
* Generate an <options>.h file
*/
static void
do_option(char *name)
{
char *file;
const char *basefile;
struct opt_list *ol;
struct opt *op;
struct opt_head op_head;
FILE *inf, *outf;
char *value;
char *oldvalue;
int seen;
int tidy;
file = tooption(name);
/*
* Check to see if the option was specified..
*/
value = NULL;
SLIST_FOREACH(op, &opt, op_next) {
if (eq(name, op->op_name)) {
oldvalue = value;
value = op->op_value;
if (value == NULL)
value = ns("1");
if (oldvalue != NULL && !eq(value, oldvalue))
fprintf(stderr,
"%s: option \"%s\" redefined from %s to %s\n",
PREFIX, op->op_name, oldvalue,
value);
op->op_ownfile++;
}
}
remember(file);
inf = fopen(file, "r");
if (inf == NULL) {
outf = fopen(file, "w");
if (outf == NULL)
err(1, "%s", file);
/* was the option in the config file? */
if (value) {
fprintf(outf, "#define %s %s\n", name, value);
} /* else empty file */
(void)fclose(outf);
return;
}
basefile = "";
SLIST_FOREACH(ol, &otab, o_next)
if (eq(name, ol->o_name)) {
basefile = ol->o_file;
break;
}
oldvalue = NULL;
SLIST_INIT(&op_head);
seen = 0;
tidy = 0;
for (;;) {
configword cp, inw;
char *invalue;
/* get the #define */
if ((inw = get_word(inf)).eol() || inw.eof())
break;
/* get the option name */
if ((inw = get_word(inf)).eol() || inw.eof())
break;
/* get the option value */
if ((cp = get_word(inf)).eol() || cp.eof())
break;
/* option value */
invalue = ns(cp); /* malloced */
if (eq(inw, name)) {
oldvalue = invalue;
invalue = value;
seen++;
}
SLIST_FOREACH(ol, &otab, o_next)
if (eq(inw, ol->o_name))
break;
if (!eq(inw, name) && !ol) {
fprintf(stderr,
"WARNING: unknown option `%s' removed from %s\n",
inw->c_str(), file);
tidy++;
} else if (ol != NULL && !eq(basefile, ol->o_file)) {
fprintf(stderr,
"WARNING: option `%s' moved from %s to %s\n",
inw->c_str(), basefile, ol->o_file);
tidy++;
} else {
op = (struct opt *) calloc(1, sizeof *op);
if (op == NULL)
err(EXIT_FAILURE, "calloc");
op->op_name = ns(inw);
op->op_value = invalue;
SLIST_INSERT_HEAD(&op_head, op, op_next);
}
/* EOL? */
cp = get_word(inf);
if (cp.eof())
break;
}
(void)fclose(inf);
if (!tidy && ((value == NULL && oldvalue == NULL) ||
(value && oldvalue && eq(value, oldvalue)))) {
while (!SLIST_EMPTY(&op_head)) {
op = SLIST_FIRST(&op_head);
SLIST_REMOVE_HEAD(&op_head, op_next);
free(op->op_name);
free(op->op_value);
free(op);
}
return;
}
if (value && !seen) {
/* New option appears */
op = (struct opt *) calloc(1, sizeof *op);
if (op == NULL)
err(EXIT_FAILURE, "calloc");
op->op_name = ns(name);
op->op_value = ns(value);
SLIST_INSERT_HEAD(&op_head, op, op_next);
}
outf = fopen(file, "w");
if (outf == NULL)
err(1, "%s", file);
while (!SLIST_EMPTY(&op_head)) {
op = SLIST_FIRST(&op_head);
/* was the option in the config file? */
if (op->op_value) {
fprintf(outf, "#define %s %s\n",
op->op_name, op->op_value);
}
SLIST_REMOVE_HEAD(&op_head, op_next);
free(op->op_name);
free(op->op_value);
free(op);
}
(void)fclose(outf);
}
/*
* Find the filename to store the option spec into.
*/
static char *
tooption(char *name)
{
static char hbuf[MAXPATHLEN];
char nbuf[MAXPATHLEN];
struct opt_list *po;
char *fpath;
/* "cannot happen"? the otab list should be complete.. */
(void)strlcpy(nbuf, "options.h", sizeof(nbuf));
SLIST_FOREACH(po, &otab, o_next) {
if (eq(po->o_name, name)) {
strlcpy(nbuf, po->o_file, sizeof(nbuf));
break;
}
}
fpath = path(nbuf);
(void)strlcpy(hbuf, fpath, sizeof(hbuf));
free(fpath);
return (hbuf);
}
static void
check_duplicate(const char *fname, const char *chkopt)
{
struct opt_list *po;
SLIST_FOREACH(po, &otab, o_next) {
if (eq(po->o_name, chkopt)) {
fprintf(stderr, "%s: Duplicate option %s.\n",
fname, chkopt);
exit(1);
}
}
}
static void
insert_option(const char *fname, char *optname, char *val)
{
struct opt_list *po;
check_duplicate(fname, optname);
po = (struct opt_list *) calloc(1, sizeof *po);
if (po == NULL)
err(EXIT_FAILURE, "calloc");
po->o_name = optname;
po->o_file = val;
po->o_flags = 0;
SLIST_INSERT_HEAD(&otab, po, o_next);
}
static void
update_option(const char *optname, char *val, int flags)
{
struct opt_list *po;
SLIST_FOREACH(po, &otab, o_next) {
if (eq(po->o_name, optname)) {
free(po->o_file);
po->o_file = val;
po->o_flags = flags;
return;
}
}
/*
* Option not found, but that's OK, we just ignore it since it
* may be for another arch.
*/
return;
}
static int
read_option_file(const char *fname, int flags)
{
FILE *fp;
configword wd;
char *optname, *val;
char genopt[MAXPATHLEN];
fp = fopen(fname, "r");
if (fp == NULL)
return (0);
while (!(wd = get_word(fp)).eof()) {
if (wd.eol())
continue;
if (wd[0] == '#') {
while (!(wd = get_word(fp)).eof() && !wd.eol())
continue;
continue;
}
optname = ns(wd);
wd = get_word(fp);
if (wd.eof()) {
free(optname);
break;
}
if (wd.eol()) {
if (flags) {
fprintf(stderr, "%s: compat file requires two"
" words per line at %s\n", fname, optname);
exit(1);
}
char *s = ns(optname);
(void)snprintf(genopt, sizeof(genopt), "opt_%s.h",
lower(s));
val = ns(genopt);
free(s);
} else {
val = ns(wd);
}
if (flags == 0) {
/*
* insert_option takes possession of `optname` in the
* new option instead of making yet another copy.
*/
insert_option(fname, optname, val);
} else {
update_option(optname, val, flags);
free(optname);
optname = NULL;
}
}
(void)fclose(fp);
return (1);
}
/*
* read the options and options.<machine> files
*/
static void
read_options(void)
{
char fname[MAXPATHLEN];
SLIST_INIT(&otab);
read_option_file("../../conf/options", 0);
(void)snprintf(fname, sizeof fname, "../../conf/options.%s",
machinename);
if (!read_option_file(fname, 0)) {
(void)snprintf(fname, sizeof fname, "options.%s", machinename);
read_option_file(fname, 0);
}
read_option_file("../../conf/options-compat", OL_ALIAS);
}
static char *
lower(char *str)
{
char *cp = str;
while (*str) {
if (isupper(*str))
*str = tolower(*str);
str++;
}
return (cp);
}
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