mirror of
https://git.FreeBSD.org/src.git
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10ca19cf93
as a replacement for the evil #define NFOO. If 'device npx' is in the static kernel, a synthetic option '#define DEV_NPX 1' will be available to stick in an opt_xxx.h file. "#if NNPX > 0" can be replaced with "#ifdef DEV_NPX" and we can get rid of the overloaded meaning of the device count mechanism.
392 lines
9.1 KiB
C
392 lines
9.1 KiB
C
/*
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* Copyright (c) 1995 Peter Wemm
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)mkheaders.c 8.1 (Berkeley) 6/6/93";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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/*
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* Make all the .h files for the optional entries
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*/
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#include <ctype.h>
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#include <err.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/param.h>
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#include "config.h"
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#include "y.tab.h"
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static struct users {
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int u_default;
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int u_min;
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int u_max;
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} users[] = {
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{ 8, 2, 512 }, /* MACHINE_I386 */
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{ 8, 2, 512 }, /* MACHINE_PC98 */
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{ 8, 2, 512 }, /* MACHINE_ALPHA */
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{ 8, 2, 512 }, /* MACHINE_IA64 */
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};
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#define NUSERS (sizeof (users) / sizeof (users[0]))
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static char *lower(char *);
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static void read_options(void);
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static void do_option(char *);
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static char *tooption(char *);
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void
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options(void)
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{
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char buf[40];
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struct cputype *cp;
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struct opt_list *ol;
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struct opt *op;
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struct users *up;
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/* Fake the cpu types as options. */
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for (cp = cputype; cp != NULL; cp = cp->cpu_next) {
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op = (struct opt *)malloc(sizeof(*op));
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memset(op, 0, sizeof(*op));
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op->op_name = ns(cp->cpu_name);
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op->op_next = opt;
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opt = op;
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}
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/* Initialize `maxusers'. */
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if ((unsigned)machine > NUSERS) {
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printf("maxusers config info isn't present, using i386\n");
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up = &users[MACHINE_I386 - 1];
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} else
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up = &users[machine - 1];
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if (maxusers == 0) {
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printf("maxusers not specified; %d assumed\n", up->u_default);
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maxusers = up->u_default;
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} else if (maxusers < up->u_min) {
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printf("minimum of %d maxusers assumed\n", up->u_min);
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maxusers = up->u_min;
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} else if (maxusers > up->u_max)
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printf("warning: maxusers > %d (%d)\n", up->u_max, maxusers);
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/* Fake MAXUSERS as an option. */
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op = (struct opt *)malloc(sizeof(*op));
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memset(op, 0, sizeof(*op));
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op->op_name = "MAXUSERS";
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snprintf(buf, sizeof(buf), "%d", maxusers);
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op->op_value = ns(buf);
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op->op_next = opt;
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opt = op;
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read_options();
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for (ol = otab; ol != 0; ol = ol->o_next)
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do_option(ol->o_name);
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for (op = opt; op; op = op->op_next) {
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if (!op->op_ownfile && strncmp(op->op_name, "DEV_", 4)) {
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printf("%s:%d: unknown option \"%s\"\n",
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PREFIX, op->op_line, op->op_name);
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exit(1);
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}
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}
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}
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/*
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* Generate an <options>.h file
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*/
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static void
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do_option(char *name)
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{
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char *basefile, *file, *inw;
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struct opt_list *ol;
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struct opt *op, *op_head, *topp;
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FILE *inf, *outf;
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char *value;
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char *oldvalue;
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int seen;
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int tidy;
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file = tooption(name);
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/*
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* Check to see if the option was specified..
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*/
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value = NULL;
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for (op = opt; op; op = op->op_next) {
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if (eq(name, op->op_name)) {
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oldvalue = value;
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value = op->op_value;
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if (value == NULL)
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value = ns("1");
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if (oldvalue != NULL && !eq(value, oldvalue))
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printf(
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"%s:%d: option \"%s\" redefined from %s to %s\n",
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PREFIX, op->op_line, op->op_name, oldvalue,
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value);
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op->op_ownfile++;
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}
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}
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inf = fopen(file, "r");
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if (inf == 0) {
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outf = fopen(file, "w");
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if (outf == 0)
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err(1, "%s", file);
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/* was the option in the config file? */
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if (value) {
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fprintf(outf, "#define %s %s\n", name, value);
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} /* else empty file */
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(void) fclose(outf);
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return;
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}
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basefile = "";
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for (ol = otab; ol != 0; ol = ol->o_next)
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if (eq(name, ol->o_name)) {
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basefile = ol->o_file;
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break;
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}
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oldvalue = NULL;
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op_head = NULL;
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seen = 0;
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tidy = 0;
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for (;;) {
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char *cp;
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char *invalue;
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/* get the #define */
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if ((inw = get_word(inf)) == 0 || inw == (char *)EOF)
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break;
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/* get the option name */
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if ((inw = get_word(inf)) == 0 || inw == (char *)EOF)
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break;
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inw = ns(inw);
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/* get the option value */
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if ((cp = get_word(inf)) == 0 || cp == (char *)EOF)
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break;
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/* option value */
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invalue = ns(cp); /* malloced */
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if (eq(inw, name)) {
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oldvalue = invalue;
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invalue = value;
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seen++;
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}
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for (ol = otab; ol != 0; ol = ol->o_next)
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if (eq(inw, ol->o_name))
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break;
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if (!eq(inw, name) && !ol) {
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printf("WARNING: unknown option `%s' removed from %s\n",
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inw, file);
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tidy++;
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} else if (ol != NULL && !eq(basefile, ol->o_file)) {
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printf("WARNING: option `%s' moved from %s to %s\n",
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inw, basefile, ol->o_file);
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tidy++;
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} else {
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op = (struct opt *) malloc(sizeof *op);
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bzero(op, sizeof(*op));
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op->op_name = inw;
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op->op_value = invalue;
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op->op_next = op_head;
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op_head = op;
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}
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/* EOL? */
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cp = get_word(inf);
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if (cp == (char *)EOF)
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break;
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}
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(void) fclose(inf);
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if (!tidy && ((value == NULL && oldvalue == NULL) ||
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(value && oldvalue && eq(value, oldvalue)))) {
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for (op = op_head; op != NULL; op = topp) {
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topp = op->op_next;
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free(op->op_name);
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free(op->op_value);
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free(op);
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}
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return;
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}
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if (value && !seen) {
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/* New option appears */
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op = (struct opt *) malloc(sizeof *op);
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bzero(op, sizeof(*op));
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op->op_name = ns(name);
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op->op_value = value ? ns(value) : NULL;
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op->op_next = op_head;
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op_head = op;
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}
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outf = fopen(file, "w");
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if (outf == 0)
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err(1, "%s", file);
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for (op = op_head; op != NULL; op = topp) {
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/* was the option in the config file? */
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if (op->op_value) {
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fprintf(outf, "#define %s %s\n",
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op->op_name, op->op_value);
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}
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topp = op->op_next;
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free(op->op_name);
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free(op->op_value);
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free(op);
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}
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(void) fclose(outf);
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}
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/*
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* Find the filename to store the option spec into.
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*/
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static char *
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tooption(char *name)
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{
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static char hbuf[MAXPATHLEN];
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char nbuf[MAXPATHLEN];
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struct opt_list *po;
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/* "cannot happen"? the otab list should be complete.. */
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(void) strlcpy(nbuf, "options.h", sizeof(nbuf));
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for (po = otab ; po != 0; po = po->o_next) {
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if (eq(po->o_name, name)) {
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strlcpy(nbuf, po->o_file, sizeof(nbuf));
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break;
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}
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}
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(void) strlcpy(hbuf, path(nbuf), sizeof(hbuf));
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return (hbuf);
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}
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/*
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* read the options and options.<machine> files
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*/
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static void
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read_options(void)
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{
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FILE *fp;
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char fname[MAXPATHLEN];
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char *wd, *this, *val;
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struct opt_list *po;
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int first = 1;
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char genopt[MAXPATHLEN];
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otab = 0;
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if (ident == NULL) {
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printf("no ident line specified\n");
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exit(1);
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}
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(void) snprintf(fname, sizeof(fname), "../../conf/options");
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openit:
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fp = fopen(fname, "r");
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if (fp == 0) {
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return;
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}
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next:
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wd = get_word(fp);
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if (wd == (char *)EOF) {
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(void) fclose(fp);
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if (first == 1) {
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first++;
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(void) snprintf(fname, sizeof fname, "../../conf/options.%s", machinename);
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fp = fopen(fname, "r");
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if (fp != 0)
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goto next;
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(void) snprintf(fname, sizeof fname, "options.%s", machinename);
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goto openit;
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}
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if (first == 2) {
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first++;
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(void) snprintf(fname, sizeof fname, "options.%s", raisestr(ident));
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fp = fopen(fname, "r");
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if (fp != 0)
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goto next;
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}
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return;
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}
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if (wd == 0)
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goto next;
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if (wd[0] == '#')
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{
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while (((wd = get_word(fp)) != (char *)EOF) && wd)
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;
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goto next;
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}
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this = ns(wd);
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val = get_word(fp);
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if (val == (char *)EOF)
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return;
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if (val == 0) {
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char *s = ns(this);
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(void) snprintf(genopt, sizeof(genopt), "opt_%s.h", lower(s));
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val = genopt;
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free(s);
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}
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val = ns(val);
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for (po = otab ; po != 0; po = po->o_next) {
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if (eq(po->o_name, this)) {
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printf("%s: Duplicate option %s.\n",
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fname, this);
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exit(1);
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}
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}
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po = (struct opt_list *) malloc(sizeof *po);
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bzero(po, sizeof(*po));
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po->o_name = this;
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po->o_file = val;
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po->o_next = otab;
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otab = po;
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goto next;
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}
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static char *
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lower(char *str)
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{
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char *cp = str;
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while (*str) {
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if (isupper(*str))
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*str = tolower(*str);
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str++;
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}
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return (cp);
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}
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